Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 55 (1983), S. 253-256 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 58 (1983), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: When wheat aleurone layers (Triticum aestivum L. var. Potam S-70) incubated in medium containing gibberellic acid were exposed to ethylene, the synthesis and release of amylase were enhanced relative to layers incubated in the presence of mercuric perchlorate. Exogenous ethylene stimulated gibberellic acid-induced amylase synthesis by approximately 2.2-fold. The ethylene-mediated stimulation of amylase formation was dependent upon the tissue being exposed to the gas during the lag phase of gibberellic acid action. Ethylene appeared to promote only quantitative changes in amylase synthesis and release, since the isoelectric focusing patterns of amylase is enzymes were not significantly altered by ethylene. Ethylene had no effect on the incorporation of [methyl-14C]choline into aleurone phospholipids, but stimulated the accumulation of [U-14C]adenine into poly(A) RNA of gibberellic acid-treated tissue by about 80%.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    facet.materialart.
    Unknown
    Madrid : Periodicals Archive Online (PAO)
    Hispania. 39 (1979) 141:51 
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    Madrid : Periodicals Archive Online (PAO)
    Trabajos de prehistoria. 38 (1981) 134 
    ISSN: 0082-5638
    Topics: Archaeology
    Notes: La Cueva del Nacimiento (Pontones): Un yacimiento neolítico en la Sierra del Segura
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurology 219 (1978), S. 227-240 
    ISSN: 1432-1459
    Keywords: Chronic poststroke state ; Internal carotid artery occlusion ; Hyperbaric oxygenation ; Cerebral ischemia ; Extra-intracranial arterial anastomosis ; Cerebral metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurden 35 Patienten im chronisch postapoplektischen Stadium untersucht. Diese zeigten einen Verschluß der A. carotis interna mit erheblichen neurologischen Ausfällen, die über eine durchschnittliche Dauer von 10 Wochen bereits bestanden. Zuerst wurde bei jedem Patienten eine hyperbare Sauerstoffbehandlung durchgeführt. Darauf wurde bei 21 dieser Patienten eine extra-intrakranielle Anastomosenoperation vorgenommen. Um den Verlauf der zerebralen Störungen zu erfassen, wurden neurologische Verlaufsuntersuchungen und EEG-Analysen durchgeführt. Entsprechend dem Effekt der hyperbaren Sauerstoffbehandlung und der nachfolgenden extra-intrakraniellen Anastomosenoperation wurden diese Patienten in 3 Gruppen eingeteilt. Gruppe I — 15 der 35 Patienten — zeigte bei Beendigung der hyperbaren Sauerstoffbehandlung eine deutliche Besserung der zerebralen Störungen und der elektrischen Hirnaktivität. Anschließend wurde bei jedem Patienten der Gruppe I eine extra-intrakranielle Anastomosenoperation durchgeführt. Dies erbrachte eine weitere Besserung der Hirnfunktionen und der elektrischen Hirnaktivität. Die postoperative Angiographie zeigte die Funktionsfähigkeit der Anastomose in 14 Fällen der Gruppe I. Gruppe II a besteht aus 14 Patienten, die am Ende der hyperbaren Sauerstoffbehandlung wie auch bei Langzeituntersuchungen nur geringe Änderungen der neurologischen Ausfälle und der elektrischen Hirnaktivität zeigten. Bei diesen Patienten der Gruppe IIa wurde keine extra-intrakranielle Anastomosenoperation durchgeführt. Gruppe IIb besteht aus 6 Patienten, die ebenso am Ende der hyperbaren Sauerstoffbehandlung nur geringe Befundänderungen zeigten. Jedoch wurde bei diesen 6 Patienten anschließend eine extraintrakranielle Anastomosenoperation vorgenommen. Obwohl die postoperative Angiographie bei jedem dieser 6 Fälle eine Funktionsfähigkeit der Anastomose zeigte, ließ sich bei der Langzeitbeobachtung nur eine geringe Befundänderung feststellen. Alle 35 Patienten boten ein sehr ähnliches klinisches Bild und befanden sich in einem chronischen postapoplektischen Stadium, wo eine spontane Besserung selten beobachtet wird. Keiner der Patienten bot vor Beginn der hyperbaren Sauerstoffbehandlung einen Anhalt für die Rückbildungsfähigkeit der zerebralen Störungen. Diese Untersuchungen zeigen, daß (a) die EEG-Intervall-Amplituden-Analyse wertvoll für die objektive Verlaufsuntersuchung bei Hirnläsionen ist, (b) die während der HO-Behandlung durchgeführte EEG-Analyse bei der Differenzierung zwischen reversiblen und irreversiblen ischämisch-hypoxischen Veränderungen des Hirns hilfreich sein kann, (c) der einseitige Verschluß der Arteria carotis interna zu neurologischen Ausfällen und vor allem aber zu bilateralen EEG-Veränderungen mit einer akzentuierten Reduktion der elektrischen Hirnaktivität über der ipsilateralen Hemisphäre führen kann, (d) chronischischämische cerebrale Störungen durch die hyperbare Sauerstoffbehandlung gebessert werden können und eine weitergehende Besserung durch nachfolgende extra-intrakranielle Anastomosenoperation erzielt werden kann und (e) Hirngewebe eine chronische Ischämie, die zu erheblichen neurologischen Ausfällen geführt hat, über eine durchschnittliche Dauer von 3 Monaten tolerieren kann.
    Notes: Summary Thirty-five chronic stroke patients, who had internal carotid occlusion that resulted in considerable neurological deficit persisting for an average of 10 weeks, were studied. First, hyperbaric oxygen (HO) therapy was administered to each patient. Subsequently an extra-intracranial anastomosis operation was performed on 21 of these patients. Serial neurological examinations and EEG analyses were performed to assess the clinical course of the cerebral lesion. According to the effect of HO treatment and of the subsequent extra-intracranial anastomosis operation these patients were divided into three groups. Group I—15 of the 35 patients—showed a significant improvement of cerebral function and electrical brain activity at the conclusion of HO therapy. Subsequently an extra-intracranial anastomosis operation was performed on each patient of group I. This resulted in further recovery of cerebral function and electrical brain activity. Postoperative angiography revealed patency of the anastomosis in 14 of the group I patients. Group IIa (14 patients) had only little change in the neurological deficit and electrical brain activity at the conclusion of HO therapy as well as at later examinations. Extra-intracranial anastomosis operation was not performed on the six patients in group IIb who also revealed only little change in their condition at the conclusion to HO treatment. Subsequent extra-intracranial anastomosis operation was, however, performed on these six patients. Although postoperative angiography demonstrated a patent anastomosis in each of these six cases only little change in their status was observed subsequently. The 35 patients were clinically very similar and were in a chronic poststroke stage where spontaneous recovery rarely occurs. None of them manifested any clinical evidence of reversibility of the cerebral alteration before beginning HO therapy. These findings indicate that (a) EEG interval-amplitude analysis is of value for an objective assessment of the course of the cerebral lesion, (b) EEG analyses performed during HO treatment can help to differentiate between reversible and irreversible ischemic hypoxic alterations of the brain, (c) unilateral internal carotid occlusion can lead to neurological deficits and, in particular to bilateral EEG alterations with an accentuated reduction of electrical brain activity over the ipsilateral hemisphere, (d) chronic ischemic alterations of the brain can be improved by HO therapy and additional recovery can take place after subsequent extra-intracranial anastomosis, and (e) brain tissue can tolerate chronic ischemia leading to considerable neurological deficit for an average period of 3 months.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The correlation between nine anthropometric variables and six different measurements of the Y heterochromatic regions of 146 young Mexican adults was investigated. Only the absolute heterochromatic width showed a significant correlation at the 0.02 level with the upper segment/lower segment ratio, but the biological significance of this finding is strongly questioned.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine kinetische Methode zur Bestimmung von Spuren Cer(IV) mit Hilfe von Natrium-4,8-diamino-1,5-dihydroxyanthrachinon-2,6-disulfonat wurde beschrieben. Dabei wird ein fluoreszierendes Oxydationsprodukt gebildet, das bei 525 nm angeregt mit einer maximalen Emission bei 585 nm fluoresziert. Die Reaktion ermöglicht die Bestimmung von 0,02–0,37 ppm Cer(IV). Die vorgeschlagene Methode wird nur durch wenige Störungen eingeschränkt.
    Notes: Summary A kinetic method for determination of traces of Ce(IV), based on the oxidation of sodium 4,8-diamino-1,5-dihydroxyanthraquinone-2, 6-disulphonate is described. The reaction is monitored by means of the fluorescence of the oxidation product (λ ex=525nm,λ em=585 nm), and allows determination of 0.02–0.37 ppm Ce(IV). The proposed method has few interferences.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine Methode zur fluorimetrischen Bestimmung von Nanogrammengen Zink mit Benzyl-2-pyridylketon-2-chinolylhydrazon als fluoreszierendes, komplexbildendes Reagens wurde beschrieben. Die Reaktion verläuft bei pH 10,5–13,5 in wäßrig-alkoholischem Medium (80% v/v Ethanol). Unter 43 geprüften Ionen stört nur Cadmium ernstlich. Das Verfahren wurde zur Zinkbestimmung in Meerwasser nach dessen 25facher Einengung verwendet.
    Notes: Summary A method is described for the fluorimetric determination of zinc at the nanogram level, with benzyl 2-pyridyl ketone 2-quinolyl-hydrazone as fluorogenic complexing reagent. The reaction is done at pH 10.5–13.5, in aqueous ethanol medium (80% v/v ethanol). Of 43 foreign ions tested, only cadmium interferes seriously. The method has been applied to the determination of zinc in sea-water, after 25-fold concentration of the sample water.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a description of the probe-impurity distant neighbours configuration for repulsive systems in a cubic lattice, using a continuous charge distribution around the probe nuclei. We propose a simple model for the charge distribution shape and its dependence with the impurity concentration. TDPAC measurements performed on111Cd probes in 1, 4, 7 and 20 at%AgIn alloys are reported and analyzed in the light of our model. In particular, the results suggest that impurities tend to form a cubic super-lattice with increasing concentration. Improvements to the model are discussed in connection with the possibility of getting quantitative information (like repulsive energies) from TDPAC measurements on repulsive systems.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...