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  • Digitale Medien  (21)
  • 2005-2009  (2)
  • 1990-1994  (12)
  • 1980-1984  (7)
  • 1945-1949
  • 1940-1944
  • 1910-1914
  • 1870-1879
  • 2005  (2)
  • 1994  (12)
  • 1981  (7)
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  • Digitale Medien  (21)
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  • 2005-2009  (2)
  • 1990-1994  (12)
  • 1980-1984  (7)
  • 1945-1949
  • 1940-1944
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  • 1
    Digitale Medien
    Digitale Medien
    Re-emission of deuterium from graphite as a function of D+ flux density (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 4511-4515 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: An experiment was performed in order to determine whether a first-order or second-order mechanism governs the re-emission of deuterium molecules from graphite during D+ bombardment. The order of the release mechanism should be reflected in the dependence of the re-emission on the incident flux density. No flux density dependence was observed, indicating a first-order process, in agreement with a hydrogen transport model where the rate of molecule release is determined by a first-order process involving H diffusion within graphite crystallites.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.357282
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  • 2
    Digitale Medien
    Digitale Medien
    A CASE OF CLEAR CELL ADENOCARCINOMA OF THE VAGINA IN PREGNANCY (1981)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 88 (1981), S. 0 
    Details
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: The case is described of a 20 year old pregnant woman with clear cell adenocarcinoma of the vagina who had been exposed to diethyl stilboestrol in utero. This is the second of three cases known to have occurred in Britain. The importance of radical treatment is discussed. Neither cervical nor vaginal intra-epithelial neoplasia were seen histologically, although squamous metaplasia was widespread, and in some areas was immature and showed atypical features which could be misinterpreted as intra-epithelial neoplasia. An area of atypical adenosis was noticed, a hitherto rarely observed feature.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-0528.1981.tb00989.x
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  • 3
    Digitale Medien
    Digitale Medien
    Interfacial roughness in InAs/GaSb superlattices (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 3476-3478 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Using high-resolution transmission electron microscopy (HRTEM), we have studied InAs/GaSb superlattices grown by molecular beam epitaxy. Our HRTEM observations indicate that the apparent interface width is on the order of 1 monolayer for InSb-like interfaces, and on the order of 2 monolayers for GaAs-like interfaces. The combination of these results with x-ray diffraction and Raman scattering measurements leads us to conclude that these interface widths are principally due to roughness rather than to interfacial diffusion.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.111245
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  • 4
    Digitale Medien
    Digitale Medien
    Fundamentals of ground water (2005)
    Oxford, UK; Malden, USA : Blackwell Science Inc
    Ground water 43 (2005), S. 0 
    Details
    ISSN: 1745-6584
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Energietechnik , Geologie und Paläontologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1745-6584.2005.0015.x
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  • 5
    Digitale Medien
    Digitale Medien
    A Portable Air-Minipermeameter for Rapid In Situ Field Measurements (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Energietechnik , Geologie und Paläontologie
    Notizen: Measurements of air-permeability in outcrops provide a means of obtaining numerous spatially distributed measurements for statistical analysis and subsequent parameterization of ground-water flow and transport modeling. The air-minipermeameters previously used for such studies generally consist of a compressed air source, rotameters, and diaphragm gauges. We present a lightweight syringe-based air-minipermeameter (LSAMP) design that is significantly more portable than previous instruments. The prototype model is contained in a 12.7 × 15.2 × 23 centimeter (5 × 6 × 9 inch) electrical box and weighs approximately 2 kilograms. The prototype LSAMP has a sampling range of 0.5 to 200 darcys. Individual measurements in this range require less than one minute. Permeability measured with the LSAMP closely correspond to permeability measured with a traditional minipermeameter and those measured on cores. Measurement error caused by soil moisture is less than 5 percent for volumetric water contents less than 5 percent. An analysis of variance on 38 triplicate measurements indicates that the variability associated with measurement error is much less than the range of measured values. Repeated permeability measurements under field conditions on two standard cores indicate that while the measurement error is greater under field conditions, the prototype device field performance is consistent with laboratory calibration results.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00640.x
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  • 6
    Digitale Medien
    Digitale Medien
    Choline Acetyltransferase in Skeletal Muscle from Patients with Myasthenia Gravis (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 37 (1981), S. 0 
    Details
    ISSN: 1471-4159
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Abstract— Acetylcholine synthesis in homogenates of human intercostal muscle was measured by a radiochemical method. Choline acetyltransferase activity in control muscle was about 20 nmol.g−1.h−1. The enzyme was found only in the endplate area of the muscle. At high substrate concentrations its activity was overshadowed by the acetylcholine synthesizing activity of a different enzyme not saturated by 10 mm-choline. The nonspecific enzyme was present at and away from the endplate area. Choline acetyltransferase in parasternal samples of intercostal muscle from myasthenia gravis patients was about 2.5 times higher than in samples, taken from a more lateral location, of control patients, but the Km for choline was not altered (0.24 mm). It is suggested that in myasthenia gravis the shortage of acetylcholine receptors is partially compensated for by increased synthesis, storage, and release of the transmitter.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-4159.1981.tb04657.x
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  • 7
    Digitale Medien
    Digitale Medien
    Faecal enzymes: in vivo human skin irritation (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 30 (1994), S. 0 
    Details
    ISSN: 1600-0536
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Digestive enzymes in faeces have been reported to posses skin irritation potential. The present study was designed to investigate the in vivo irritant potentials of faecal concentrations of proteolytic and lipolytic digestive enzymes in bile salt mixtures. In a 21-day cumulative irritation assay, clinical evaluation and noninvasive bioengineering techniques were used. 5 days occlusive exposure to phosphate buffer (pH = 8) caused no visual skin damage but reflectance spectroscopy demonstrated significant vasodilation (p 〈 0.01) and increases in transepidermal water loss (TEWL) and skin pH were also observed (p 〈 0.01). These increases were still present at days 12 and 19. Occlusive exposure to physiologic concentrations of faecal enzymes resulted in significant visual and objective scores at day 5, 12, and 19, with increased readings as a function of exposure time (p 〈 0.01). The enzyme mixture containing lipase caused delayed onset of skin erythema and epidermal barrier disruption compared to elastase and chymotrypsin containing solutions. Prolonged occlusive exposure to digestive enzymes in faecal concentrations caused severe skin erythema and epidermal barrier disruption in a human model, suggesting a possible etiologic role of digestive enzymes in perianal, circumstomal or diaper dermatitis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0536.1994.tb00696.x
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  • 8
    Digitale Medien
    Digitale Medien
    Relationship between diabetes mellitus and adenocarcinoma of the oesophagus and gastric cardia (2005)
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 22 (2005), S. 0 
    Details
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background:  Obesity is a risk factor for adenocarcinomas of the oesophagus and gastric cardia. Diabetes mellitus might mediate that association.Aim:  To estimate the risk of diabetes mellitus on the development of adenocarcinoma of distal oesophagus and gastric cardia beyond that of gastro-oesophageal reflux disease.Methods:  A case–control study was performed using a national administrative database of the Veterans Administration.Results:  A total of 311 cases of cancer and 10 154 controls were identified. Gender, age, and race were risks for cancer. Diabetes was diagnosed in 36% of cases, and 32% of controls (P = 0.15). Diabetic complications were diagnosed in 14% of cases and 13% of controls (P = 0.60). Multiple logistic regression confirmed the absence of an association between cancer and diabetes (odds ratio 1.1, 95% confidence interval 0.8–1.5) or diabetic complications (odds ratio 0.8, 95% confidence interval 0.6–1.3), adjusting for age, gender, and race.Conclusions:  Within the limitations of this case–control study, there is no evidence of an association between diabetes and adenocarcinoma of the oesophagus or gastric cardia among US veterans with gastro-oesophageal reflux disease.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2036.2005.02544.x
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  • 9
    Digitale Medien
    Digitale Medien
    Pocock's Harrington: Grace, Nature and Art in the Classical Republicanism of James Harrington (1981)
    Cambridge : Cambridge University Press
    The @historical journal 24 (1981), S. 683-697 
    Details
    ISSN: 0018-246X
    Quelle: Cambridge Journals Digital Archives
    Thema: Geschichte
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1017/S0018246X00022573
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  • 10
    Digitale Medien
    Digitale Medien
    X-ray diffraction studies of oriented dilauroyl phosphatidylcholine bilayers in the Lδ and Lδ phases (1994)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 208-216 
    Details
    ISSN: 1600-5740
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1107/S0108768193008341
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