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  • 1965-1969  (1,556)
  • Industrial Chemistry  (1,519)
  • Psychopharmacology  (37)
  • 1
    ISSN: 1432-2072
    Keywords: Lysergic Acid Diethylamide or LSD ; Methylphenidate or Ritalin ; Chlordiazepoxide or Librium ; Psychopharmacology ; Alcoholism and Drug Therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Through the retrospective use of the 156 item DWM Card Sort, the experiences from a single intravenous dose of 200 mcg of LSD, 75 mg of methylphenidate (Ritalin) and 75 mg of chlordiazepoxide (Librium) were compared in a population of 99 chronic male alcoholics treated in an “LSD setting” in a double-blind study. Surprisingly, 96 of the 156 items proved significantly different among the 3 groups. LSD was unique in producing Sensory and Perceptual Distortions (including Hallucinations or Illusions), and Mystical, Religious or Paranormal Sensations. However, contrary to expectation, LSD did not uniquely produce the traditional “therapeutic” experience, but appeared to be surpassed in that area by methylphenidate. Both drugs also produced some anxiety, while chlordiazepoxide produced relaxation, and enhanced music appreciation.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Psychopharmacology 14 (1969), S. 18-22 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Animal Behaviour ; Mice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mice were stained with pulverized charcoal and the resulting grooming behaviour observed. From 119 controls, the typical patterns indicated a late cleaning of the tail, the sacrum and the region between the ears. The following substances were tested: Imipramine, Desipramine, Trimeprimine, Amitriptyline, Nortriptyline, Chlordiazepoxide, Iproniazide, d-Amphetamine, Chlorpromazine, Haloperidol, Acetylsalicylic acid, Metronidazole. Of these Amitriptyline, Chlorpromazine, Haloperidol and Metronidazole were effective in doses less than 1/10 of LD 5.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Psychopharmacology 14 (1969), S. 62-73 
    ISSN: 1432-2072
    Keywords: Amphetamine ; Hallucinogens ; Drug Addiction ; Psychopharmacology ; Phenylethylamines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The amphetamine analog, 2,5-dimethoxy-4-methylamphetamine (DOM), was studied in 18 volunteer subjects given single doses ranging from 2 to 14 mg. The former was a threshold dose, with definite psychotomimetic effects being evident from doses over 5 mg. The clinical syndrome greatly resembled that of the LSD-mescaline-psilocybin series of drugs, including its time-course. Somewhat more sedation was produced by DOM than would have been expected from the others, despite concomitant evidence of peripheral sympathetic stimulation. Just as with the other drugs, DOM increased plasma free fatty acids, decreased phosphorus and creatinine clearance, decreased circulating eosinophils and had little effect on catecholamine excretion. Performance of psychometric tests was impaired. Chlorpromazine treatment concurrently was found to attenuate the reaction. Tolerance rapidly developed when the drug was used chronically by patients.
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  • 4
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Doxepin ; Diazepam ; Anti-Anxiety ; Antidepressant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Doxepin and diazepam were evaluated for therapeutic effectiveness in a double blind study carried out with 69 primarily anxious neurotic outpatients attending either a municipal hospital clinic or a general practitioner's office. Doxepin produced more clinical improvement than diazepam in several questionnaire clusters measuring depressive symptomatology, but not in clusters measuring anxious symptomatology. According to several outcome criteria, doxepin tended to produce more clinical improvement in general practice than in clinic patients, while diazepam produced either equal improvement in both populations or slightly more improvement in the clinic. Possibly contributing to the present results are low daily dosage of diazepam, differential pharmacological drug effects, population differences in levels of anxiety and depression, and differences in population characteristics, primarily as related to social class.
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  • 5
    ISSN: 1432-2072
    Keywords: Nicotine ; Antimuscarinic Drugs ; Ganglion-Blocking Drugs ; Operant Conditioning ; Psychopharmacology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effects of nicotine on bar-pressing behaviour in the rat are blocked by mecamylamine. The depressant phase of the effect is blocked by atropine, supporting the conclusion that this depression is mediated by released acetylcholine. The quaternary compounds chlorisondamine and atropine methylnitrate also antagonise the behavioural effects of nicotine but the doses required for this are far in excess of those which are effective peripherally, suggesting that the sites of interaction are central.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Psychopharmacology 15 (1969), S. 1-8 
    ISSN: 1432-2072
    Keywords: Cannabis (Marihuana) ; Lysergic Acid Diethylamide ; Hallucinogens (Psychopharmacology) ; Visual Perception ; Psychopharmacology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Four pigeons were trained on a visual discrimination task which required conditional responding along the independent dimensions of form and color. High doses of Cannabis sativa (marihuana) extract and lysergic acid diethylamide (LSD), which were equated on the basis of their effectiveness in suppressing responding, increased responding on a color dimension but not on a form dimension. High doses of LSD produced a decrement in discrimination performance while comparable doses of Cannabis did not effect accuracy. Treatment with Bromolysergic acid diethylamide, saline, and pentobarbital did not produce significant changes in performance. Results are discussed in terms of a break-down in stimulus control and central hallucinogenic activity.
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  • 7
    Electronic Resource
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    Springer
    Psychopharmacology 14 (1969), S. 394-403 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Morphine ; Skin Conductance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Skin conductance changes during periods of stress induced by hypercapnia were studied during a cycle of addiction to morphine. Conductance changes were found to be dose dependent in both tolerant and non-tolerant states. The effects of morphine on skin conductance changes induced by hypercapnia were similar to those effects previously observed on changes induced by electric shock.
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  • 8
    Electronic Resource
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    Springer
    Psychopharmacology 14 (1969), S. 417-425 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Psychoses ; Reflex, Abnormal ; Chlorpromazine ; Trifluopromazine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary According to our results in 117 subjects, recently taken medications, age and sex must be considered when duration of the Achilles-tendon reflex is used as a clinical test to assess thyroid status. Males have a shorter ATR than females. In older subjects the ATR lasts longer than in those below age 27. Fifty-two psychiatric patients before medication did not differ in ATR duration from 65 controls. However, after 28 patients took chlorpromazine and 24 received trifluoperazine, ATR was prolonged in the chlorpromazine group and shortened in the trifluoperazine group. Neither chlorpromazine concentrate, 1,800 mg, nor trifluoperazine concentrate, 180 mg, given during the first six days, affected ATR, but an additional 6,000 mg of chlorpromazine, or an additional 420 mg of trifluoperazine over the next six days, did significantly alter ATR-duration.
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  • 9
    Electronic Resource
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    Springer
    Psychopharmacology 14 (1969), S. 142-149 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Amphetamine ; Cholinergics ; Drug Interactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Amphetamine was administered to a group of rats trained on a nondiscriminated avoidance procedure. An intraperitoneal dose of 2.0 mg/kg caused about a 75% increase in response rate for the three-hour session. Doses of atropine, Tremorine, eserine, and 4-(1-naphthylvinyl)-pyridine (NVP), an inhibitor of the enzyme choline acetylase, which were ineffective in themselves, markedly affected the increase in rate observed after amphetamine. The quarternary amine of NVP was without effect on the amphetamine response. Those agents that decreased cholinergic function, either by blocking the effect of acetylcholine or by preventing its synthesis, augmented the stimulating effect of amphetamine. Cholinergic stimulants, on the other hand, significantly antagonized the behavioral effects of amphetamine.
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  • 10
    Electronic Resource
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    Springer
    Psychopharmacology 14 (1969), S. 221-232 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Animal Behaviour ; Nicotine ; Punishment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effects of nicotine, amphetamine, chlordiazepoxide and caffeine were studied in rats trained on a VI 2 crf schedule of water reward with all rewards accompanied by electric shock. Responding, partially suppressed by the shock, was restored by chlordiazepoxide and further suppressed by amphetamine. Nicotine resembled amphetamine in its effects on most rats but occasionally increased responding. Caffeine also increased responding in some rats indicating that this property is not always confined to tranquillising drugs.
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  • 11
    Electronic Resource
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    Springer
    Psychopharmacology 15 (1969), S. 109-115 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Hallucinogens ; Drug Effects ; Behavior Exploratory ; Monkeys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of Psilocybin on the behavior of the baboon Papiopapio has been studied. Animal watchfulness, as estimated from the E.E.G., is enhanced within the first five minutes after injection and then is not further modified. Psilocybin induces a decrease of spontaneous motility. Conversely, the frequency of eye movements is considerably increased. This pattern might be explained by alterations of visual perception.
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  • 12
    Electronic Resource
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    Springer
    Psychopharmacology 15 (1969), S. 134-143 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Anti-Anxiety ; Controlled Trial ; Doxepin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Six patients with persistent anxiety symptoms were used in a preliminary assessment of a new anti-anxiety compound-Doxepin (Sinequan) with placebo. The factorial design is discussed as a potentially useful way of conducting a first-stage test of anti-anxiety compounds. Analysis of the results showed that Doxepin at 25 mg t.d.s. and 50 mg t.d.s. was associated with improvement in the patient's self ratings of anxiety symptoms.
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  • 13
    Electronic Resource
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    Springer
    Psychopharmacology 15 (1969), S. 144-152 
    ISSN: 1432-2072
    Keywords: Niacin ; Nicotinamide Adenine Dinucleotide ; Schizophrenia ; Phenothiazines ; Psychopharmacology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two grams of NAD were administered orally to ten chronic schizophrenic patients for twenty-one days. Five of the patients were also receiving thioridazine. There was no gross clinical improvement noted in any of the patients despite the fact that related experiments suggested that the NAD was absorbed. In those patients who were not also receiving phenothiazines there was a distinct tendency towards increased hostility, aggressiveness and irritability beginning one week after the initiation of NAD treatment and lasting for nearly two weeks after the NAD was discontinued.
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  • 14
    Electronic Resource
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    Springer
    Psychopharmacology 15 (1969), S. 245-254 
    ISSN: 1432-2072
    Keywords: Aggression ; Lithium ; Psychopharmacology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The influence of lithium on aggressive behavior was studied in Siamese fighting fish, mice and golden hamsters. The fish stopped fighting when exposed to concentrations of 10 to 30 meq/l LiCl in the surrounding water. Also in mice and hamsters which ingested LiCl with the drinking fluid lithium abolished intraspecific aggression. Measurements of plasma and brain lithium levels revealed astonishing individual differences in the concentrations which were necessary for the antiaggressive effect. In all species normal aggressive behavior reappeared after lithium treatment was discontinued.
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  • 15
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Antidepressants ; Reserpine Emesis ; Apomorphine Pecking
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Seven psychic energizers have been quantitatively evaluated for their antidepressant and tranquillizing activity using antagonism of reserpine induced emesis and apomorphine induced pecking in pigeons as test procedures for the two activities respectively. Pheniprazine and deanol possess anti-reserpine activity only whereas imipramine, desmethylimipramine, amitriptyline, opipramol and orphenadrine possess both anti-reserpine as well as anti-apomorphine activity. It is suggested that the two tests form a simple and reliable combination for evaluating potential antidepressants.
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  • 16
    Electronic Resource
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    Springer
    Psychopharmacology 15 (1969), S. 351-360 
    ISSN: 1432-2072
    Keywords: Nicotine ; Conditioned Stimulus ; Discrimination Learning ; Psychopharmacology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Rats were trained to respond for water rewards on different bars in a Skinner box depending on whether they had previously been injected with nicotine or with saline. No other drug tested could consistently elicit responses on the “nicotine correct” bar. Pre-treatment with mecamylamine abolished the rats' ability to distinguish between nicotine and saline but pretreatment with chlorisondamine did not.
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  • 17
    Electronic Resource
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    Springer
    Psychopharmacology 14 (1969), S. 200-210 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Hashish ; Cannabinoids ; Monkeys Amphetamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 1. The psychopharmacological activity of Δ 1-tetrahydrocannabinol, (I); Δ 1(6)-tetrahydrocannabinol (4′ hexyl), (II); Δ 1(6)-tetrahydrocannabinol, (III); 1-ethoxyhexahydrocannabinol, (IV); 8-ethoxy-iso-hexahydrocannabinol, (V); Δ 1(6)-tetrahydrocannabinolic acid Me ester, Isomer I, (VI); Δ 1(6)-tetrahydrocannabinolic acid Me ester, Isomer II, (VII); cannabigerol, (VIII); Δ 1(6)-tetrahydrocannabinol (3′ hexyl), (IX); cannabichromene, (X); has been examined in a variety of animal species. 2. Compounds (I) and (III) caused severe motor disturbances and a stuporous state in dogs and ptosis, “tameness” and peculiar postural changes in monkeys. In the latter animal, compound (II) elicited similar effects. 3. Compounds (I) and (III) after intraperitoneal but not subcutaneous administration, suppressed the gerbil digging activity; reduced the rat conditioned avoidance response and induced a cataleptoid reaction in mice, rats and gerbils. In addition, compound (I) reduced the performance of mice on the rotating-rod. Both compounds, administered subcutaneously, induced a measurable ataxic gait in rats. 4. Amphetamine reversed the behavioural changes elicited by compounds (I) and (III) in monkeys, as well as the cataleptoid reaction in rats. 5. None of the other compounds provoked observable changes in any of the species studied. 6. It is suggested that Rhesus monkeys might serve as a suitable model for assessing the psychopharmacological activity of active cannabinoids.
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  • 18
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    Springer
    Psychopharmacology 14 (1969), S. 248-254 
    ISSN: 1432-2072
    Keywords: Amphetamine ; Appetite Depressants ; Psychopharmacology ; Sympathomimetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A method is described with which it is possible to measure locomotor activity and food intake simultaneously in the same rat or other small animal. From a study of a number of psychomotorstimulant drugs and anorectic agents it may be concluded that locomotorstimulation and appetite-suppression are two different effects that may or may not characterize the same drug. Methamphetamine and phenmetrazine are stimulants in doses that do not inhibit food intake. Amphepramon reduced food intake in low doses but acts as a stimulant in higher doses. Chlorphemternine and phenfluramine are anorectic agents that are not stimulants, even in high doses.
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  • 19
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    Psychopharmacology 15 (1969), S. 28-38 
    ISSN: 1432-2072
    Keywords: Drugs ; Sleep ; Electroencephalography ; Psychophysiology ; Psychopharmacology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Sleep physiological patterns were examined following a single oral dose (500 mg) of the hypnotic drug alpha chloralose. The drug increased SW sleep and decreased REM sleep without affecting total sleep time or the amount of stage 2. These changes were accompanied by a shift to slower frequencies and greater EEG synchrony, as well as a decrease in the number of spontaneous arousals in all stages of sleep, and throughout the night of medication. Except for a slight decrease in eye movement density, the drug had no systematic effects on phasic phenomena such as electrodermal or cardio-respiratory fluctuations, nor was there a systematic change in basal heart and breathing rates. On the night following medication a “rebound” increase in percent stage REM was associated with a sharp decrease in SW sleep, and increases in spontaneous arousals and waking time. Such findings suggest that sleep stages are controlled by homeostatic mechanisms whose function is to maintain equilibrium. A comparison of the effects of alpha chloralose with those of the barbiturate secobarbital revealed some striking differences. Although both alpha chloralose and the barbiturate reduced the amount of stage REM and the frequency of brief arousals, the latter compound enhanced EEG fast activity and desynchrony, and suppressed such phasic phenomena as rapid eye movements during stage REM, sigma spindles in stage 2, nonspecific electrodermal responses during SW sleep and cardio-respiratory variability in all sleep stages. For secobarbital, the decrease in percent stage REM was compensated by an increase in stage 2 rather than SW sleep. Several studies in the cat suggest that in subanesthetic doses, alpha chloralose acts primarily on cortical inhibitory processes, causing release of the reticular activating system from inhibitory influences. The results of this study show that moderate doses in man probably act on both cortical and subcortical systems involved in the mediation of SW sleep, REM sleep and arousal.
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  • 20
    Electronic Resource
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    Springer
    Psychopharmacology 15 (1969), S. 64-72 
    ISSN: 1432-2072
    Keywords: Amphetamine ; Dextro Amphetamine ; Psychopharmacology ; Conditioning, Operant ; Pharmacodynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Bar pressing was maintained by food reinforcement of each fiftieth response (FR50 schedule). Rats were tested at 3 levels of food deprivation (60, 80 and 100% of ad libitum body weight) under three drug conditions (0, 0.2 and 0.4 mg of D-amphetamine per rat). Overall response rate was reduced by increasing doses of drug, but not significantly by deprivation, within the range studied. The components of response rate were analysed separately into the starting speed (latency of the first response of each ratio run of 50 responses) and running rate. Drug level affected running rate and first latency of the session, whereas body weight affected only first latency of the session. Only the first latency of the session showed an interaction of drug level and body weight. The lack of interaction raises the question, whether amphetamine is more properly administered as total dose per rat, rather than proportional to body weight.
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  • 21
    Electronic Resource
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    Springer
    Psychopharmacology 15 (1969), S. 196-206 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Animal Behavior ; Alcohol ; Atropine ; Discrimination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two operant procedures were used for training albino rats to make differential responses on the basis of their drug or nondrug condition. In the Conflict procedure, every fifth lever press was rewarded by a food pellet in one condition (drug for half the animals, saline for the other half) and was punished by electric shock in the other condition. For 6 animals the drug condition was ethyl alcohol (1200 mg/kg of a 10% v/v solution in isotonic saline, injected i.p. 5 min before the start of the session); for 4 animals the drug condition was atropine sulfate (10 mg/kg in 1 ml/kg saline injected i.p. 30 min before the start of the session). In the Choice procedure, food reward was obtained by the first press on one of two levers at a variable time interval, averaging one minute, after the prior food reward. The rewarded lever depended on the animal's drug or saline condition (alcohol for 7 animals, atropine for 5 animals, administered as in the Conflict procedure); the same right-hand or left left-hand lever was rewarded in the drug condition for half the animals and in the saline condition for the other half. The response associated with 1200 mg/kg alcohol was generally elicited in tests with sufficiently high doses of pentobarbital sodium (10–20 mg/kg), chlordiazepoxide hydrochloride (10–15 mg/kg) and chloral hydrate (90–120 mg/kg, administered orally). Lower doses of these compounds, and of alcohol, were perceived as less similar to the alcohol and therefore more similar to the saline condition. Substantial doses of chlorpromazine hydrochloride (2 mg/kg) and d-amphetamine sulfate (1 mg/kg) also were perceived as similar to the saline condition. The response associated with a centrally acting anticholinergic (10 mg/kg atropine) was generally elicited in tests with several doses of scopolamine hydrobromide (0.06 to 1.0 mg/kg) and of atropine (2.5–5.0 mg/kg). The saline response was elicited by a lower dose of scopolamine (0.03 mg/kg) and by a peripherally-acting anticholinergic, atropine methyl bromide, at a dose (5 mg/kg) equimolar with 10 mg/kg atropine sulfate. The same results, including closely similar ED50 doses, were generally found with the Conflict and Choice procedures, despite the differences between them in the motivational basis for the differential drug and nondrug responses. The similarities and dissimilarities among these compounds in perceived stimulus characteristics also correspond closely with those reported by Overton (1966) with a locomotor shock-escape procedure in tests which were generally limited to a single high dose of each drug.
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  • 22
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    Psychopharmacology 15 (1969), S. 425-429 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Methysergide ; Mania ; Lithium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Six manic patients were studied in an open sequential drug trial of placebo and the serotonin antagonist methysergide; lithium was then substituted double-blind. No dramatic change occurred in individual manic item scores or in mean daily mania ratings after 48 hours or seven days of methysergide, although several of the patients showed slight trends toward improvement. However, after a mean duration of 10.3 days of lithium treatment, all manic item scores improved dramatically and significantly, so that complete clinical remission was evident in all patients. In view of the discrepancy between these essentially negative findings and several recent positive reports on the efficacy of methysergide in the treatment of mania, the authors feel that the indolealkylamine hypothesis of affective disorders should be further investigated.
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  • 23
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    Psychopharmacology 15 (1969), S. 19-27 
    ISSN: 1432-2072
    Keywords: Psychopharmacology ; Animal Behavior ; Nicotine-Physical Performance ; Motivation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In sessions of ten runs each, swimming time of rats through a 4 m long water alley was measured. Four doses of nicotine (0.05; 0.1; 0.2; 0.4 mg/kg given intraperitoneally 30 minutes before testing) were tested in sessions with a braking load on the tails of the animals either in all 10 runs of a session, or in every second run, or in none of the 10 runs. Regardless of the swimming condition, nicotine produced a considerable, and at doses of 0.1 mg/kg and over, significant decrease of performance in the first two runs. From the third to the 10th run, the changes caused by nicotine were smaller and differed depending on the swimming conditions. A dose of 0.1 mg nicotine/kg improved performance in the “without-load-sessions” and the “without-load-runs” of the alternating sessions, while both 0.1 and 0.2 mg/kg improved performance of the “with-load-runs” of the alternating sessions. Performance in the “without-load-sessions” and the “without-load-runs” was depressed by 0.4 mg/kg and that in the “with-load-sessions” by 0.2 and 0.4 mg/kg.
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  • 24
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Neben verfahrenstechnischen Problemen sind bei der Süßwassergewinnung aus Meerwasser vor allem Werkstoff- und Korrosionsprobleme zu lösen, über die dieser Beitrag einen kurzen Überblick gibt. Die aufgezeigten Werkstoff-Fragen werden dabei unter den extremen Bedingungen thermischer Verfahren gesehen, die nach dem heutigen Stand der Technik am wirtschaftlichsten sind.
    Additional Material: 4 Ill.
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  • 25
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In Ceuta (Span. Marokko) wurden zwei 24stufige Entspannungsverdampfer-Anlagen zur Gewinnung von Trinkwasser aus Meerwasser errichtet. Nachfolgend werden die Schwierigkeiten bei der Inbetriebnahme der Anlage und die erforderlichen Gegenmaßnahmen beschrieben. Durch kleine Änderungen konnten die Betriebssicherheit der Anlage und die Qualität des gewonnenen Wassers erheblich verbessert werden.
    Additional Material: 1 Ill.
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  • 26
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 41 (1969) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 27
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 41 (1969), S. 701-708 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In einer früheren Veröffentlichung [1] wurde über den Stand der technischen Entwicklung auf dem Gebiet der Brennstoffelemente mit gasförmigen Brennstoffen berichtet. Als Ergänzung dazu beschäftigt sich die vorliegende Arbeit mit Batterien, die flüssige Brennstoffe umsetzen. Teil II, 1 behandelt die Methanol- und Formiat-Batterien, während Teil II, 2 die Hydrazin-Batterien beschreibt. Auch hier sollen wieder nur Batterien erwähnt werden, die technisch so weit entwickelt sind, daß sie bereits im praktischen Betrieb benutzt werden oder verwendet werden können. Die heute möglichen und die in Zukunft denkbaren Anwendungen dieser neuen elektrochemischen Stromquellen sollen in einer abschließenden Arbeit (Teil III) diskutiert werden.
    Additional Material: 17 Ill.
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  • 28
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Einfluß des Druckes auf die Reaktionsgeschwindigkeitskonstante läßt sich bei der Berechnung von Hochdruckreaktoren mit Hilfe des charakteristischen Aktivierungsvolumens der Reaktion erfassen. Die Änderung der Geschwindigkeitskonstante mit dem Druck wird diskutiert und ihr Einfluß auf den in einem Reaktor erzielbaren chemischen Umsatz sowie auf die Qualität der Reaktionsprodukte untersucht. Für die Ermittlung des charakteristischen Aktivierungsvolumens wird eine neue Methode angegeben.
    Additional Material: 10 Ill.
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  • 29
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 721-724 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Fehler, der bei der Messung des mittleren dynamischen Drucks und der daraus berechneten mittleren Geschwindigkeit auftritt, ist sowohl abhängig von der Turbulenzstruktur selbst als auch von der Form der verwendeten Sonde. Der durch die Sonde hervorgerufene Fehler läßt sich durch die Richtungsempfindlichkeit in nicht turbulenter Strömung erklären und berechnen, sofern die Turbulenzstruktur selbst bekannt ist. Untersuchungen an einem turbulenten Luftfreistrahl konstanter Dichte werden beschrieben. Der Meßfehler in Strömungen mit Geschwindigkeits- und Dichteschwankungen wird qualitativ behandelt.
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  • 30
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 725-731 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden Methoden zur Ermittlung der Struktur von teilchenhaltigen Bindemittelschichten am Modell zinkoxid-haltiger Siliconharz-Schichten, wie sie in der Elektrophotographie Verwendung finden, beschrieben. Es zeigt sich, daß Schichten, die schlecht dispergiertes Zinkoxid enthalten, zur Porosität neigen. Aufgrund der Untersuchungen können Aussagen über den Mechanismus gemacht werden, der zum Entstehen der Poren führt. Über zellartige Strukturen, die im Zusammenhang mit den Poren beobachtet worden sind, wird berichtet. Es wird darauf hingewiesen, daß die gefundenen Strukturen nicht nur bei zinkoxid-haltigen Siliconharzen, sondern auch bei anderen Systemen auftreten können. Möglichkeiten zur Vermeidung von Poren werden angegeben.
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  • 31
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 736-736 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 32
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 739-739 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 33
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 740-740 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 34
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    Chemie Ingenieur Technik - CIT 41 (1969) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 35
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zur Bestimmung reaktionskinetischer Daten von Simultanreaktionen erster Ordnung bei der isothermen Pyrolyse von Feststoffen, hier speziell von Kohlen, wurde ein Analog-Rechenverfahren entwickelt. Die berechneten Reaktionsgeschwindigkeitskonstanten lassen sich unabhängig vom Inkohlungsgrad bestimmten Reaktionsstufen zuordnen. Für die bei der Pyrolyse von Steinkohlen anfallenden Entgasungsprodukte Methan, Propan, Äthylen und Kohlenmonoxid wurden Aktivierungsenergien von 48 bis 66 kcal/mol und Stoßfaktoren von 1013 bis 1017 min-1 ermittelt. Für Äthan liegen die Werte bei 50 bis 90 kcal/mol und 1014 bis 1025 min-1 Miteinem weiteren Analog-Rechenprogramm können aus den reaktionskinetischen Daten, die mit dem ersten Rechenprogramm ermittelt wurden, die ihnen entsprechenden nicht-isotherm aufgenommenen Entgasungskurven berechnet werden.
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  • 36
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 196-198 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird eine Übersicht gegeben über die Möglichkeiten der elektrischen Beheizung von Eisenerz-Verhüttungsöfen. Bei Koks-Heizung geht ein beträchtlicher Teil der Wärmeenergie ungenutzt mit den Gichtgasen verloren. Dieser Verlust ist bei elektrisßher Heizung sehr viel geringer.
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  • 37
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 199-204 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird gezeigt, unter welchen Bedingungen heutzutage die Erzeugung von Calciumcarbid und Carbid-Acetylen konkurrenzfähig ist mit der petrochemischen Erzeugung von Acetylen. Ferner wird dargelegt, wann andere Verfahren mit Äthylen als Rohstoff solche auf Acetylen-Basis ablösen. Eine wesentliche Entwicklung, die die Konkurrenzfähigkeit von Carbid-Acetylen vorteilhaft beeinflußt, ist die der Hohlelektrode. Für einige Anwendungsgebiete werden sich daher bei günstigen Voraussetzungen Calciumcarbid und Carbid-Acetylen behaupten können.
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  • 38
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 777-787 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 39
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 773-775 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Zündgrenzen des Systems NH3/N2/O2 wurden bei mehreren Temperaturen in Abhängigkeit von der Zusammensetzung unter einem Druck von 130 atü bestimmt. Bei Extrapolation der Ergebnisse zeigt sich, daß Gemische mit weniger als 7, 5 Mol-% NH3 (bei 50°C) und weniger als 11 Mol-% O2 (bei 110 bis 120°C) sowie mehr als 67 Mol-% N2 (bei 50°C) nicht mehr zündbar sind. Durch Temperatursteigerung werden die Zündgrenzen erweitert. Bei den Explosionen wurden Drucksteigerungen etwa bis zum 10fachen des Anfangsdruckes beobachiet.
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 787-789 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969) 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 226-226 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 227-228 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 44
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 832-834 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 45
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 837-837 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 838-839 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 839-841 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 48
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 591-592 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 49
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 592-592 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 50
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 988-989 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
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  • 51
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden die Erfahrungen und Betriebsergebnisse seit der Inbetriebnahme des ersten Kessels der Müllverbrennungsanlage in Berlin-Ruhleben mitgeteilt, und es wird dargelegt, in welcher Weise sie für die Planung des nächsten Bauabschnitts ausgewertet wurden. Einzelne wichtige Erkenntnisse werden sich jedoch erst beim Bau weiterer Anlagen verwirklichen lassen.
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  • 52
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1015-1020 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden der Druckverlust und der Stoffübergang in einem Strahlapparat untersucht, in dem die Flüssigkeit an der Abströmkante eines Konus zerstäubt wird. Im Gegensatz zum Venturi-Absorber wird dabei die zum Zerstäuben notwendige Energie nur von dem Gasstrom aufgebracht. Die Konstruktionen werden dadurch einfach und betriebssicher. Aufgrund einer Dimensionsanalyse können die Meßergebnisse für verschiedene geometrische Abmessungen des Apparates und für verschiedene Stoffsysteme in großen Bereichen durch dimensionslose Beziehungen beschrieben werden.
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  • 53
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1007-1014 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wurde eine Apparatur entwickelt, die differentialthermoanalytische Messungen bis zu Drücken von 2500 at bei Temperaturen bis 300°C durchzuführen gestattet. Für die reaktionskinetische Auswertung solcher DTA-Messungen werden zwei Methoden vorgeschlagen, die auch bei komplexen Reaktionen anwendbar sind. Die eine beruht auf der direkten Bestimmung der kinetischen Parameter aus Temperatur- und Umsatzkurven für spezielle Reaktionsabschnitte, die andere auf der Nachrechnung der experimentell ermittelten Umsatzverläufe. Nach beiden Methoden wurden für die Äthylen-Hochdruckpolymerisation die Stoßfaktoren und Aktivierungsenergien der Teilreaktionen (Start, Wachstum und Abbruch) ermittelt und diese mit früher nach anderen Meßverfahren gewonnenen Ergebnissen verglichen.
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1022-1023 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
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  • 55
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1023-1024 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
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  • 56
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1040-1042 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 57
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1037-1039 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 58
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    Chemie Ingenieur Technik - CIT 41 (1969) 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 59
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    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Für die Luftführung in Reinräumen ist eine turbulenzarme Verdrängungsströmung (Laminar Flow) der turbulenten Strahlbelüftung vorzuziehen, obgleich auch sie einen gewissen Partikeltransport quer zur Strömungsrichtung bewirkt. Die Ausbreitung der Kontamination wird durch die Bestimmung der Grenzkurve, d. h. der Umhüllenden eines sich hinter einer Kontaminationsquelle ausbildenden kontaminierten Bereiches, gekennzeichnet, die einen konstanten Winkel mit den Stromlinien aufweist. Somit kann, wenn das Stromlinienbild durch Rauchfaden-Photographie und die Lage der Kontaminationsquelle bekannt sind, der gefährdete kontaminierte Bereich abgeschätzt werden.
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 638-638 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 641-643 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 62
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Mit Hilfe einer neuartigen photometrischen Meßmethode kann die Verteilung des örtlichen Stoffüberganges an zwangsumströmten Körpern ermittelt werden. Strömungsmedium ist Luft, Ammoniak als übergehender Stoff wird an der Oberfläche der Körper absorbiert und chemisch gebunden. Derartige Messungen erlauben unter der Voraussetzung der Analogie von Wärme- und Stoffübertragung gleichzeitig Aussagen über die Verteilung des Wärmeüberganges. Die Untersuchung wurde an querangeströmten Kreiszylindern unterschiedlichen Durchmessers ausgeführt. Die Methode gestattet es, mit relativ einfachen Mitteln örtliche Stoffübergangszahlen innerhalb eines Streubereiches in der Größenordnung von ±5% zu bestimmen.
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1082-1091 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1092-1094 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1095-1099 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die in der Praxis vorkommenden Diffusionsflammen lassen sich häufig auf die Grundformen Einzelstrahlflamme, konzentrische Doppelstrahlflamme und Drallstrahlflamme zurückführen. Die Beschreibung der Strahlmischung mit Hilfe der Ähnlichkeitsgesetze turbulenter Strahlen erlaubt, den Einfluß der Anfangsbedingungen am Brenner auf die weiter stromab liegenden Gebiete systematisch zu erfassen. In begrenztem Umfang liefert die Ähnlichkeitstheorie auch Aussagen über Flammen, die in Gruppen angeordnet sind, und über Flammen, die sich unter Ausbildung eines Rückstromwirbels in begrenzten Feuerräumen ausbreiten. Bei Anwendung der Ähnlichkeitsgesetze ergeben sich Parameter, die es ermöglichen, den Umfang der experimentellen Untersuchungen einzuschränken.
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1100-1105 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zur Klärung des Zeitverhaltens einer Füllkörperkolonne bei der Rektifikation eines ternären Systems wurden sprungförmige Störungen im Flüssigkeits/Dampf-Verhältnis vorgenommen. Die Kolonne bestand aus einem Verstärkerteil und wurde kontinuierlich betrieben. Als Testgemisch diente das nahezu ideale System Äthylacetat/Benzol/Trichloräthylen. Die Zeitkonstanten, die das Abklingen der Störungen charakterisieren, wurden gemessen sowie Übergangsfunktionen und Konzentrationsprofile beschrieben.
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1111-1118 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Sauerstoff-Austausch zwischen einer mit dem Isotop 18O angereicherten Wasserprobe und strömendem CO2-Gas mit natürlicher Isotopenhäufigkeit läßt sich durch eine Zeitkonstante charakterisieren, die durch Messung des zeitlichen Verlaufs der 18O-Konzentration im Wasser bestimmt wird. Aus der Abhängigkeit der Zeitkonstante von der Temperatur, vom CO2-Durchsatz, vom Bicarbonat- und Carbonat-Gehalt des Wassers werden die Geschwindigkeitskonstanten der Austauschreaktionen ermittelt.
    Additional Material: 6 Ill.
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  • 68
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1173-1176 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Für die pneumatische Förderung von feinkörnigen Gütern wird ein Bypass-System beschrieben, welches die Anwendung einer Pfropfenströmung zur Förderung ohne Verstopfungsgefahr erlaubt. Auf diese Weise wird der Luftverbrauch und damit der Leistungsbedarf erheblich gesenkt, und durch Auswechseln der Förderleitung kann mit den vorhandenen Kompressoren eine höhere Förderkapazität erreicht werden.
    Additional Material: 7 Ill.
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  • 69
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden Berechnungsgleichungen zur Pfropfen- und Ballenförderung aufgestellt, die sich zur raschen Bewältigung ausgedehnter Versuchs- und Entwicklungsarbeiten bereits gut bewährt haben. Grundlagenversuche mit einer für variablen Druck bis 25 at und Gutbeladungen bis 300 eingerichteten Versuchsanlage führten unter Verwendung älterer Ergebnisse von M. Bohnet zu einer neuen Theorie der Strähnenförderung. Diese erlaubt eine einfache und schnelle Berechnung pneumatischer Förderleitungen mit ausreichender Genauigkeit für praktische Anwendungen.
    Additional Material: 16 Ill.
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  • 70
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Einfluß von erzwungenen Geschwindigkeitsschwankungen auf den Stoffübergang zwischen Rohrwand und Gas bei ausgebildeter laminarer Strömung wurde am Beispiel einer stofftransportbestimmten heterogenen katalytischen Reaktion in einem Strömungsrohr untersucht. Die Versuche wurden mit unterschiedlichen Frequenzen im Bereich von 275 Hz bis 1325 Hz und Schalldrucken bis 165,7 dB durchgeführt. Bei Schalleinwirkung nahm die effektive Reaktionsgeschwindigkeit wegen der Erhöhung des Stoffüberganges zu. Der Effekt vergrößerte sich mit zunehmendem Schalldruck und abnehmender Frequenz der Schallwellen. Eine empirische Beziehung, die die Abhängigkeit der Erhöhung der Stoffübergangszahl von Frequenz, Schalldruck und mittlerer Gasgeschwindigkeit im Rohrreaktor angibt, wurde aufgestellt.
    Additional Material: 7 Ill.
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  • 71
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 834-836 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 72
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 838-839 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 73
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1212-1221 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird eine Anleitung für den richtigen Einbau von flammendurchschlagsicheren Armaturen in Tankanlagen mit brennbaren Flüssigkeiten gegeben. Nach allgemein gültigen Grundlagen wird die Absicherung von Behälterlüftungen und Anschlußrohrleitungen besprochen. Ferner werden weitere Tankarmaturen behandelt, die flammendurchschlagsicher, gasdicht und funkenfrei sein müssen. Der Einbau von Flammenschutzsicherungen bei Motoren wird kurz behandelt. Die Auslegung von Armaturen und ihre Wartung werden ausführlich dargelegt.
    Additional Material: 11 Ill.
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  • 74
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 849-855 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Schwingmahlung eines olivin-reichen Titanomagnetits führte nach einer Mahldauer von 320 h zu einer nahezu vollständigen Lösbarkeit des Titan- und des Eisen-Anteils. Weiterhin wurde für die Feinstmahlung eine allgemein gültige Abhängigkeit zwischen Mahlungsgleichgewicht und Mahlbarkeitsgrenze gefunden. Außerdem ließen sich Rekristallisationen während des Mahlprozesses nachweisen.
    Additional Material: 9 Ill.
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  • 75
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An einem längs angeströmten, von innen beheizbaren Platin-Rohr wird die katalytische Oxidation von Kohlenoxid mit Sauerstoff untersucht. Das Platin-Rohr bildet die innere Begrenzung eines Ringspaltes, dessen Wärmeübergang in Vorversuchen gemessen wird. Der Strömungszustand wird im Bereich der Reynolds-Zahl 110 ≤ Re ≤ 1,2 · 104 geändert; das Gasgemisch enthält 2 bis 7 Vol.-% Kohlenoxid in Sauerstoff. Bei der Beaufschlagung der Apparatur mit dem Reaktionsgas können stabile Betriebspunkte gemessen werden, die sich befriedigend durch ein Stabilitätsdiagramm der Reaktion erklären lassen.
    Additional Material: 9 Ill.
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  • 76
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 868-877 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Für die wichtigsten Modelle homogener chemischer Rohrreaktoren werden konsistente und numerisch stabile finite Differenzengleichungen angegeben. Als spezielles Rechenbeispiel wurde der nichtisotherme Rohrreaktor für Gasphasereaktionen ausgewählt. Das Übergangsverhalten dieses technisch wichtigen Reaktortyps konnte mit hoher Genauigkeit und relativ geringer Rechenzeit ermittelt werden.
    Additional Material: 6 Ill.
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  • 77
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 882-884 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
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  • 78
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    Chemie Ingenieur Technik - CIT 41 (1969) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 79
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1270-1273 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bei Reaktionen im System gasförmig/flüssig/fest, z. B. beim Hydrieren mit suspendiertem Kontakt, muß der Rührer sowohl das Gas dispergieren als auch den Feststoff vom Behälterboden aufwirbeln. Zu diesem Zweck wurde der selbstansaugende Rohrrührer mit einem unter ihm auf gleicher Welle angeordneten Propellerrührer kombiniert. Für diese Rührerkombination wurden durch Laborversuche die Gasdurchsatz-, die Wellenleistungs- sowie die Aufwirbelungs-Charakteristik aufgestellt.
    Additional Material: 4 Ill.
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  • 80
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    Chemie Ingenieur Technik - CIT 41 (1969) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 81
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1287-1294 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Essigsäure- Übergang aus Benzol in Wasser wurde sowohl an frei fallenden Einzeltropfen als auch am Tropfenschwarm in einer kontinuierlich arbeitenden Kolonne untersucht und verglichen. Die kontinuierliche Phase ist in der Kolonne praktisch vollständig rückvermischt und der zeitliche, auf den Einzeltropfen bezogene Umsatz bei beiden Methoden gleich groß. Von diesem Befunden ausgehend wird ein Verfahren vorgeschlagen und als leistungsfähig ausgewiesen, das mit den im Laboratorium leicht durchführbaren Messungen des Einzeltropfen-Überganges eine realistische Berechnung von Sprüh- und Siebbodenkolonnen, sowohl hinsichtlich der Anlaufcharakteristik als auch des stationären Betriebszustandes gestattet.
    Additional Material: 15 Ill.
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  • 82
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird über einige Versuche an einem Drehtrommelmodell zum Studium der Entmischungserscheinungen in Schüttungen von Kugeln unterschiedlicher Dichte berichtet. Die Entmischungstendenzen bei der Mischung körniger Substanzen verschiedener Dichte können durch die Wahl geeigneter Teilchendimensionen kompensiert oder verringert werden. Durch größere Teilchenabmessungen der spezifisch schwereren Komponente gelingt es, in der Kugelschüttung eine wesentliche Verbesserung der Mischgüte bis nahe an den Zustand stochastischer Homogenität zu erreichen.
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  • 83
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 937-939 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
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  • 84
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An einer Füllkörperkolonne mit seitlichem Zulauf wurde untersucht, wie sich sprungförmige Änderungen des Flüssigkeits/Dampf-Verhältnisses, der Zuflußkonzentration und der Zuflußmenge auf den Betrieb der Kolonne auswirken. Die charakteristischen Zeiten, mit denen die Störungen abklingen, wurden gemessen. Aus den stationären Profilen, Diagrammen der Übergangsfunktionen sowie Zuflußfunktionen ergeben sich Hinweise über günstige Regelmöglichkeiten.
    Additional Material: 13 Ill.
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  • 85
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    Chemie Ingenieur Technik - CIT 41 (1969) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 86
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 951-958 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die einfache Programmiertechnik und die anschauliche Ergebnisdarstellung in Kurvenform machen - zusammen mit der Fähigkeit zur direkten Integration - den Analogrechner besonders geeignet zur Simulation zeit- oder ortsabhängiger Vorgänge. Anhand charakteristischer Beispiele aus dem Bereich der Regelungstechnik und der Verfahrenstechnik werden die Anwendungsmöglichkeiten des Analogrechners näher erläutert.
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  • 87
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 958-962 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Beim Stimmgabel-Gasdichtemesser wird die durch das Gas bewirkte Frequenzänderung als Meßeffekt ausgenutzt. Für große Meßspannen ΔqG, für die eine lineare Näherungsgleichung bei der Auswertung nicht anwendbar ist, wurde ein elektronisches Rechenwerk entwickelt, das die exakte Beziehung zwischen Frequenz und Gasdichte genau nachbildet und völlig digital arbeitet. Es werden die durch Näherungsverfahren entstehenden Fehler vermieden und die sehr guten Meßeigenschaften der Meßgeber voll ausgenutzt.
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  • 88
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 967-970 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Für die katalytische Oxidation von o-Xylol zu Phthalsäureanhydrid wurde ein Katalysator entwickelt, bei dem eine TiO2/V2O5-Kontaktmasse in einer dünnen Schicht auf Kugeln aus z. B. Porzellan, Magnesiumsilicat oder Quarz aufgebracht wird. Über einige in einem Versuchsreaktor und in einer großtechnischen Anlage mit einer monatlichen Leistung von 1200 t Phthalsäureanhydrid erzielten Ergebnisse mit diesem Katalysator wird berichtet.
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  • 89
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    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Eine moderne technische Synthese für Phthalsäureester wird am Beispiel einer kontinuierlich arbeitenden Anlage für die Herstellung von Dioctylphthalat mit einer Leistung von 100 000 t pro Jahr beschrieben. Die Ausbeute beträgt sowohl bezogen auf Phthalsäureanhydrid wie auch auf Äthylhexanol 98% d. Th. Durch die ausschließliche Verwendung der Ausgangsstoffe Phthalsäureanhydrid und Alkohol gelingt es, mit einfachen Trennoperationen in den Reinigungsstufen des Prozesses auszukommen und gleichzeitig Weichmacher hervorragender Qualität zu erzeugen. Bei der autokatalytischen Veresterung von Säureanhydrid und Alkohol kann man auf die bisher übliche Verwendung von starken Säuren als Katalysator und inerten Stoffen als Schleppmittel verzichten. Die Synthese wird in einer Rührkessel-Kaskade durchgeführt und ist allgemein brauchbar bei Verwendung hochsiedender Alkohole. Unter etwas abgewandelten Bedingungen wurde sie auch auf die Herstellung von Estern aliphatischer Dicarbonsäuren mit Oxoalkoholen übertragen. Das Verfahren ist flexibel gegenüber Betriebsstörungen und Qualitätsschwankungen der Ausgangsstoffe. Es bietet in dieser Form die wirtschaftlichste Veresterung  -  ein Kompromiß zwischen Reaktionszeit und Reinigungsaufwand. In der BASF werden 90 bis 95% der gesamten Weichmacher-Produktion nach dieser Methode hergestellt.
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  • 90
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 989-990 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 91
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An Hand einiger Shadensfälle aus der chemischen Industrie wird gezeigt, daß es bei austenitischen nichtrostenden Stählen unter scharfen Angriffsbedingungen zu Sonderformen der Korrosion kommen kann, wenn in der austenitischen Grundmasse elektrochemisch unedlere Phasen und Zonen vorhanden sind. Ursachen und Abhilfemaßnahmen werden erörtert.
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  • 92
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 88-88 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 93
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Möglichkeiten der Wärmeübertragung begrenzen bei chemischen Reaktionen mit hohem Energieumsatz Reaktionsvolumen und Einheitsleistung von Rührkessel- und Schlaufenreaktoren. Daraus erwächst hinsichtlich der Reaktorgröße ein Problem der wirtschaftlichen Optimierung. Es läßt sich mit Hilfe definierter Vergleichsreaktoren allgemeingültig, d. h. unabhängig von bestimmten Reaktionsbedingungen und Stoffwerten, behandeln. Als Beispiel werden ein Rührkesselreaktor mit Blattrührer und ein Schlaufenreaktor mit Treibstrahlumwälzung berechnet.
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  • 94
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1025-1034 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 95
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1034-1036 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Tab.
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  • 96
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1039-1040 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 97
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1042-1042 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 98
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1046-1050 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden die Grundlagen der Adsorption von Krypton und Xenon mit niedrigen Partialdrücken an Aktivkohle bei Normaltemperatur mit Luft als Trägergas und konstantem Wassergehalt in der Trägerluft und auf der Kohle dargestellt. Über die Anwendung der erarbeiteten Grundlagen in Verzögerungsanlagen zur Dekontaminierung von Abluft aus Siedewasser-Kernreaktoren wird berichtet.
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  • 99
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    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die turbulenzarme Verdrängungsströmung, die man zur Belüftung von Reinräumen anwendet, wird durch die Reibungsgrenzschicht an den Wänden und den thermischen Auftrieb gestört. Aus den Strömungsgesetzen werden die günstigsten Bedingungen abgeleitet. Es ergibt sich, daß sich Reinfelder ohne zusätzliche Begrenzungswände oder Luftschleier bei Belüftung von oben nach unten oder unten nach oben abgrenzen lassen.
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  • 100
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    Chemie Ingenieur Technik - CIT 41 (1969), S. 1077-1078 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
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