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  • 1
    Electronic Resource
    Electronic Resource
    Compact ion/electron analyzer for spaceflight or laboratory use (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 1973-1977 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A space qualified 260° spherical plate electrostatic analyzer has been developed as a plasma diagnostic tool. The use of nested spheres and unusually shaped microchannel plates has resulted in a sensor capable of measuring simultaneously the three-dimensional populations of ions and electrons in a plasma. High-current microchannel plates and a new packaging of a hybrid preamplifier discriminator are combined with an uncommon high-voltage circuit. The combination of these features yields an analyzer that is compact and lightweight, efficient in its power consumption, and has a broad dynamic range.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143314
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hydrogen neutralization of acceptors in highly doped GaInAs:Zn (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 2791-2793 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have investigated the behavior of atomic hydrogen (or deuterium) introduced by plasma in highly doped GaInAs:Zn epitaxial layers. Different experimental techniques have been used: secondary-ion mass spectrometry (SIMS) profiling, electronic transport measurements, and infrared absorption spectroscopy. After hydrogenation the concentration of free holes is drastically reduced. SIMS profiles follow erfc functions. This corresponds to weak hydrogen-dopant interactions. This weakness is confirmed by the annealing experiments from which a low dissociation energy can be estimated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103789
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ultraviolet-visible and Raman spectroscopy of diatomic manganese isolated in rare-gas matrixes (1991)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 95 (1991), S. 2644-2652 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100160a006
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  • 4
    Electronic Resource
    Electronic Resource
    Peri-operative elastase-α-1 proteinase inhibitor in patients with postoperative intervertebral discitis (1993)
    Springer
    Acta neurochirurgica 120 (1993), S. 150-154 
    Details
    ISSN: 0942-0940
    Keywords: Elastase-α-1 Proteinase Inhibitor ; C-reactive protein ; postoperative spondylodiscitis ; prediction ; prophylaxis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a prospective study of 251 patients operated upon for lumbar disc herniation it has been investigated whether the preoperative and early postoperative values of Elastase-α-1 Proteinase Inhibitor (EPI) — an indicator of inflammatory processes — and C-reactive Protein (CRP) — a well known predictor of some postoperative complications — were correlated to the later development of discitis. Postoperatively discitis developed in 14 patients. A randomly choosen group of 15 complication-free patients out of the total of 251 cases was used as control group. Elevated EPI plasma values, especially in the pre-operative and first postoperative days, turned out to be significantly related to the likelyhood of later discitis development, but no such relation for the CRP plasma values could be established. Thus and early prediction of patients at risk for this complication seems to be possible by pre- and postoperative measurement of EPI. It could be justified —but its usefulness has yet to be proven — to give antibiotics prophylactically and other anti-inflammatory medication in patients with elevated pre- and postoperative EPI values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02112034
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  • 5
    Electronic Resource
    Electronic Resource
    Parasacral surgery for curative treatment of rectal cancer (1991)
    Springer
    International journal of colorectal disease 6 (1991), S. 86-88 
    Details
    ISSN: 1432-1262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300198
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Neuroanatomical substrates mediating the aversive effects of D-1 dopamine receptor antagonists (1991)
    Springer
    Psychopharmacology 103 (1991), S. 209-214 
    Details
    ISSN: 1432-2072
    Keywords: Place conditioning ; SCH-23390 ; A-69024 ; D-1 receptor ; N. accumbens ; Mesolimbic system ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An unbiased place preference conditioning procedure was used to examine the secondary reinforcing effects of selective D-1 dopamine (DA) receptor antagonists and the neuroanatomical substrates mediating these effects. Systemic administration of SCH-23390 or the non-benzazepine D-1 receptor antagonist A-69024 produced dose-related conditioned aversions for the drug-associated place. In contrast, the D-2 antagonists spiperone and (−)sulpiride were without effect. SCH-23390-induced place aversions were also observed after intracerebroventricular administration. The minimum dose producing this effect was significantly lower than that after systemic injection. Aversive effects were also observed after microinjection of SCH-23390 into the n. accumbens. In contrast, microinjections of this antagonist into the ventral tegmental area, caudate putamen or medial prefrontal cortex were without effect. These data confirm that the blockade of D-1 but not D-2 DA receptors induces aversive states. Furthermore, they suggest that D-1 receptors in the n. accumbens may play an important role in the regulation of non-drug induced affective states.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02244205
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  • 7
    Electronic Resource
    Electronic Resource
    Acidic Fibroblast Growth Factor: Evaluation of Topical Formulations in a Diabetic Mouse Wound Healing Model (1994)
    Springer
    Pharmaceutical research 11 (1994), S. 65-71 
    Details
    ISSN: 1573-904X
    Keywords: acidic fibroblast growth factor ; wound healing ; diabetic mouse ; topical formulations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The efficacy of topical formulations of acidic fibroblast growth factor (aFGF) in healing of full-thickness wounds has been studied in a diabetic db + /db+ mouse model. The effect of several formulation variables, dose, and application frequency was examined. It was found that wound healing in diabetic animals treated with aFGF or placebo was slower than in their nondiabetic littermates. The availability of aFGF from the viscous vehicle employed in this study (1% hydroxyethyl cellulose) was demonstrated in vitro using diffusion cells. The viscous formulation of aFGF was equally effective in wound healing as a nonviscous formulation in phosphate-buffered saline. A formulation containing heparin (necessary for full biological and conformational stability of aFGF) at a mass ratio of 3:1 to aFGF was more efficacious than formulations with lower heparin: aFGF ratios. Wounds treated with three doses of 3.0 µg/cm2 aFGF healed faster than those treated with a single dose of 3.0 µg/cm2 aFGF. Three applications of 3.0 or 0.6 µg/cm2 aFGF were equally effective in accelerating wound healing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018993610801
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  • 8
    Electronic Resource
    Electronic Resource
    Industrial applications of instrumental neutron activation analysis (1993)
    Springer
    Journal of radioanalytical and nuclear chemistry 169 (1993), S. 93-104 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Neutron activation analysis is shown as a useful diagnostic technique in semiconductor industry. A better acceptance of the method for applications in industry has been achieved through a specialized analytical service. Its main application is the characterization of high purity silicon in all stages of production. Irradiation of large sample volumes allowes a very sensitive detection of impurities in silicon with detection limits down to 10−16 g/g. Other applications discussed are the analysis of silicon carbide, quartz, pure water and titanium. Special techniques described are autoradiography, depth profiling and surface analysis. In semiconductor process technology NAA was used to monitor contamination of silicon wafers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02046787
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  • 9
    Electronic Resource
    Electronic Resource
    12. Einsatz von Tonmineralien-Produkten zur Vorreinigung von Abwässern und Leistungssteigerung von Kläranlagen (1993)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 65 (1993), S. 1052-1052 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330650914
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