Library

X
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
    Effects of Ca2+ and other divalent cations on K+-evoked force production of slow muscle fibers from Rana esculenta and Rana pipiens (1992)
    Springer
    The journal of membrane biology 129 (1992), S. 211-220 
    Details
    ISSN: 1432-1424
    Keywords: slow muscle fibers ; K+ contractures ; divalent cations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Slow muscle fibers were dissected from cruralis muscles of Rana esculenta and Rana pipiens. Isometric contractures were evoked by application of K+-rich Ringer's containing Ca2+, Ni2+, Co2+, Mn2+ or Mg2+. High (7.2 mmol/liter) external Ca2+ concentration raised, 0 Ca2+ lowered the K+ threshold. Replacing Ca2+ by Ni2+ or Co2+ had an effect similar to that of high Ca2+ Ringer's. In Mg2+ Ringer's the K+ concentration-response curve was flattened. These effects were observed already after short exposure times in both species of slow fibers. When Ca2+ was removed for long periods of time the slow fibers of R. esculenta lost their contractile response to application of high K+ concentrations much more quickly than those of R. pipiens, while the response to caffeine (20 mmol/liter) was maintained. Upon readmission of Ca2+ contractile ability was quickly restored in the slow fibers of both R. esculenta and R. pipiens, but the effects of Ni2+ (or Co2+, Mn2+ and Mg2+) were much larger in R. esculenta than in R. pipiens slow fibers. It is concluded that divalent cations have two different sites of action in slow muscle fibers. K+ threshold seems to be affected through binding to sites at the membrane surface; these sites bind Ni2+ and Co2+ more firmly than Ca2+. The second site is presumably the voltage sensor in the transverse tubular membrane, which controls force production, and where Ca2+ is the most effective species of the divalent cations examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219516
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Development of height and weight in children with diabetes mellitus: Report on two prospective multicentre studies, one cross-sectional, one longitudinal (1992)
    Springer
    European journal of pediatrics 151 (1992), S. 258-262 
    Details
    ISSN: 1432-1076
    Keywords: Diabetes mellitus ; Growth ; Height ; Weight ; Metabolic control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Optimal regimen for insulin therapy should lead to normal longitudinal growth and weight gain in children with diabetes mellitus. However, reports published so far indicate that this goal of paediatric diabetology is currently not achieved in a considerable number of patients. In a cross-sectional sample of 89 children with insulin dependent diabetes mellitus (IDDM) for more than 3 years, we found the relation of height to weight to be significantly different compared to 102 healthy school children of similar age. Using bivariate analysis, body shape in these children with diabetes was shifted towards small and obese (P〈0.05) compared to control children. We subsequently initiated a longitudinal study and followed children from the onset of diabetes for the following 3 years, recording height, weight and bone age as well as glycosylated haemoglobin and daily insulin requirement. At diagnosis, height SDS was identical in children with IDDM (+0.04±0.10) compared to control children (−0.07±0.10; M±SE), while weight SDS was −0.26±0.10 in children with diabetes (controls: +0.01±0.1). Bone age was identically retarded in newly diagnosed IDDM children (−0.73±0.12 SDS) and in our control group of children from the same regional background (−0.50±0.12; n.s.). In this group of children with diabetes mellitus followed prospectively, height to weight relationship differed from controls after 2 and after 3 years of the disease (P〈0.05). At 2 years, body size in children with diabetes was shifted towards taller and heavier compared to controls, while at 3 years, the relation of height to weight was even more abnormal with increased obesity but a reduction of standardized height. This is the same relation encountered in the cross-sectional sample of children with a duration of diabetes beyond 3 years. These data demonstrate that even modern insulin therapy does not guarantee normal development of height and weight in children with IDDM.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072224
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Nosocomial sinusitis in ventilated patients (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 47 (1992), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A total of 68 postoperative patients whose lungs were ventilated for more than 4 days were studied prospectively during a one-year study period to investigate the effect of the mode of intubation on the paranasal sinuses. After an initial X ray of the skull showing no pathological findings, patients were assigned randomly to one of the study groups; the lungs of patients in group A were ventilated via an orotracheal tube (n = 32), and patients in group B via a nasotracheal tube (n = 36). X ray examinations of the sinuses were performed at regular intervals. Diagnosis of sinusitis was confirmed by transantral needle puncture and culture of fluids obtained. Antibiotic regimens were altered according to laboratory testing. Two patients in group A developed signs of sinusitis in comparison to 15 patients in group B (p 〈 0.01). However, there were significantly more airway complications in the orotracheal group, particularly during the period of weaning from ventilation. We conclude that orotracheal intubation should be preferred as the routine route of intubation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1992.tb02177.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Zinc diffusion in InP using diethylzinc and phosphine (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 3234-3237 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A low pressure open tube system with diethylzinc (DEZn) and phosphine (PH3) as precursors was used to study the Zn-diffusion in InP. This system offers a flexible and precise control of the diffusion parameters. We investigated the effect of the DEZn and PH3 partial pressures and of the diffusion temperature and time on the hole and Zn concentration profiles. Annealing the samples leads to an increased hole concentration due to out-diffusion of interstitial Zn donors. The Zn and hole concentration profiles were obtained by secondary-ion mass spectroscopy and C–V etch profiling showing maximum hole concentrations between 1017 cm−3 and 4×1018 cm−3 for diffusion depths from 0.3 to 2 μm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350969
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Diffusion of cations in chromia layers grown on iron-base alloys (1992)
    Springer
    Oxidation of metals 37 (1992), S. 81-93 
    Details
    ISSN: 1573-4889
    Keywords: chromia layer ; alien cation diffusion ; lattice diffusion ; grain-boundary diffusion ; external spinel or sulfide growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Diffusion of the cations Cr, Fe, Mn, and Ni in Cr2O3 has been investigated at 1173 K. The diffusion measurements were performed on chromia layers grown on the model alloys Fe-20Cr and Fe-20Cr-12Ni in order to consider effects of small amounts of dissolved alien cations in Cr2O3. The samples were diffusion annealed in H2-H2O at an oxygen partial pressure close to the Cr2O3/Cr equilibrium. For all tracers the lattice-diffusion coefficients are 3–5 orders of magnitude smaller than the grain-boundary diffusion coefficients. The lattice diffusivity of Mn is about two orders of magnitude greater than the other lattice-diffusion coefficients, especially in Cr2O3 grown on Fe-20Cr-12Ni. The values of the diffusion coefficients for Cr, Fe, and Ni are in the same range. Diffusion of the tracers in Cr2O3 grown on different alloys did not show significant differences with the exception of Mn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00665632
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Pion-source geometry deduced from soft-pion interferometry in heavy-ion collisions at 650 A MeV (1992)
    Springer
    The European physical journal 343 (1992), S. 293-299 
    Details
    ISSN: 1434-601X
    Keywords: 25.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report transverse,R T , and longitudinal,R L , source sizes extracted from two-pion interferometry analysis in the Au+Au and Nb + Nb interactions at 650 A MeV. For the Nb+Nb interactions, both,R T andR L , do not exceed the niobium nucleus radius. In the case of Au+Au collisions, the transverse size is larger than the longitudinal one being about 12 fm for the selection ofP π + 〈 120 MeV/c. We also corroborate the existence of the previously reported specific three-pion correlations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291528
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Retrospective approach to explain growth retardation and urolithiasis in a child with long-term nutritional acid loading (1992)
    Springer
    European journal of nutrition 31 (1992), S. 121-129 
    Details
    ISSN: 1436-6215
    Keywords: Children ; phenylketonuria ; lowphenylalanine preparations ; acidicdiet ; maximumrenal netacid excretion ; urolithiasis ; Kleinkind ; Phenylketonurie ; phenylalaninarme Diätprodukte ; alimentäre Säurelast ; maximale renale Säureausscheidung ; Harnsteine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Zusammenfassung Ein Säugling mit Phenylketonurie erhielt unbeabsichtigt für insgesamt 29 Monate eine phenylalaninarme Diät mit hoher alimentärer Säurelast. Eine vorübergehende Wachstumsretardierung und die Entwicklung von Harnsteinen dürften direkte Folgen, eine Karies im Alter von 6 Jahren möglicherweise eine langfristige Konsequenz der chronischen Säurebelastung gewesen sein. Das Beispiel dieser Krankengeschichte zeigt, daß eine chronische alimentäre Säurebelastung ernsthafte klinische Folgen haben kann.
    Notes: Summary An infant with phenylketonuria unintentionally received a highly acidic low phenylalanine diet for 29 months. Temporary growth retardation and urolithiasis were observed, probably as direct effects of chronic acid loading. Caries at the age of 6 years may be a late consequence. This case report shows that chronic dietary acid load may cause serious side effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01623070
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Aus der Vorratsschutz-Arbeit des Pflanzenschutzamtes Berlin. Tierische Schädlinge in Nahrungs- und Genußmitteln sowie an Materialien in der Großlagerhaltung und im Haushalt sowie Bekämpfungsmaßnahmen in den Jahren 1987–1991 (1992)
    Springer
    Journal of pest science 65 (1992), S. 145-147 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Es wird über das Auftreten von 14 Vorratsschädlingen, darunter 9 Käfer- und 3 Mottenarten, in den Lägern der Senatsbevorratung bis zu deren Auflösung berichtet. Ferner wird die Rangfolge des Auftretens von über 33 Schädlingsarten in Haushaltungen dargestellt. Die häufigsten Schädlinge in der Großlagerhaltung waren Speichermotten (Ephestia elutella) und Brotkäfer (Stegobium paniceum). Für den Vorratsschutz interessante Fälle und besondere Arten werden ausführlicher behandelt. Außerdem wird ein Überblick über die Bekämpfungsmaßnahmen gegeben, bei denen neben den Begasungsmitteln Methylbromid und Phosphorwasserstoff auch Vernebelungsmittel auf der Grundlage von Dichlorvos, Pyrethrum und Piperonylbutoxid in verschiedenen Anteilen eingesetzt wurden. Vorbeugend wurden auch DDVP-Strips gegen Mottenbefall verwendet.
    Notes: Abstract It is reported about 14 stored-product insects, among them 9 species of beetles an 3 species of moths appearing in the warehouses of the stock-piling division of the provincial government of Berlin (West) from 1987 up to the dissolution of the stocks in 1991. Additionally it is given an account of the appearance of more than 33 species of stored product pests in private households. The most common pests in the stocks and warehouses respecitively were warehouse moths (Ephestia elutella Hbn.) and the drugstore beetle (Stegobium paniceum L.). Particular cases and species of special interest are described in detail. Moreover a survey is given about the pest control activities in the stored products protection, which are carried out both with poison-gas as Methyl bromide and Phosphine as well as with aerosols on basis of Dichlorvos and Pyrethrum plus Piperonylbutoxide in different percentages. Dichlorvos slow resin strips are used prophylactically against stored-product moths in warehouses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01903402
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...