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  • Springer  (8)
  • Nature Publishing Group (NPG)  (5)
  • International Union of Crystallography (IUC)  (2)
  • Geological Society of America (GSA)  (1)
  • National Academy of Sciences  (1)
  • Oxford University Press  (1)
  • San Diego :Elsevier Science & Technology,  (1)
  • American Chemical Society
  • 2010-2014  (11)
  • 1975-1979  (7)
  • 1970-1974  (1)
  • 1945-1949
  • 1915-1919
  • 2013  (11)
  • 1978  (7)
  • 1974  (1)
Document type
Publisher
Language
Years
  • 2010-2014  (11)
  • 1975-1979  (7)
  • 1970-1974  (1)
  • 1945-1949
  • 1915-1919
Year
  • 1
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Electrochemistry. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (488 pages)
    Edition: 1st ed.
    ISBN: 9781483266398
    Language: English
    Note: Front Cover -- Electrochemical Kinetics: Theoretical Aspects -- Copyright Page -- Table of Contents -- PREFACE TO ENGLISH-LANGUAGE EDITION -- INTRODUCTION -- CHAPTER 1. ELECTROCHEMICAL THERMODYNAMICS -- A. Concepts and Definitions -- B. Equilibrium Potentials -- C. Electrical Double Layer and Eleclrocapillarity -- CHAPTER 2. THE THEORY OF OVERVOLTAGE -- A. Charge-Transfer Overvoltage -- B. Diffusion Overvoltage -- C Reaction Overvoltage -- D. Crystallization Overvoltage -- E. Total Overvoltage -- F. Resistance Polarization -- CHAPTER 3. METHODS OF DETERMINING ELECTROCHEMICAL REACTION MECHANISMS -- A. Examination of the Overall Electrode Reaction -- B. Determination of the Type of Overvoltage -- D. Determination of Chemical Reaction Orders pj of Preceding Rate-Determining Reactions -- E. Determination of the Reaction Kinetics -- LIST OF FREQUENTLY USED SYMBOLS -- AUTHORS INDEX -- SUBJECT INDEX.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 52 (1974), S. 719-721 
    ISSN: 1432-1440
    Keywords: Aldosterone ; renin ; pheochromocytoma ; Aldosteron ; Renin ; Phaechromocytom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Sieben von 8 Patienten mit einem Phäochromocytom zeigten eine über die Norm erhöhte Plasma-Renin-Aktivität (〉3 ng/ml/3 h). Bei 4 der 7 Patienten mit Hyperreninismus konnte gleichzeitig auch ein abnorm hohes Plasma-Aldosteron nachgewiesen werden (〉120 pg/ml). Seitengetrennte Bestimmungen der Plasma-Renin-Aktivität im Nierenvenenblut zweier Patienten zeigten, daß als Ursachen des Hyperreninismus sowohl eine Verringerung der Nierendurchblutung durch Tumorkompression im Sinne eines Goldblattmechanismus als auch eine Stimulation der renalen Reninsekretion durch Katecholamine in Frage kommen können. Bei 2 unserer Patienten mit einem Phäochromocytom fand sich eine über die Norm gesteigerte Cortisolsekretion.
    Notes: Summary Seven of eight patients with pheochromocytoma showed elevated plasma renin activity (〉3 ng/ml/3 hr). Four of these seven patients simultaneously had abnormally high plasma aldosterone (〉120 pg/ml). It was found by selective determinations of plasma renin activity in both renal veins that two different mechanisms may be responsible for the observed hyperreninism. Firstly, the pheochromocytoma can lead mechanically to a reduction in renal blood flow inducing an increased renin secretion. Secondly, catecholamines are known to stimulate renin secretion. Two of the eight patients with pheochromocytoma showed an increased cortisol secretion.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 19 (1978), S. 556-563 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary Although a transitory maternal zinc deficiency has been shown to result in an increased cadmium-induced fetotoxicity, the results of the present investigation indicated that a maternal zinc deficiency apparently did not affect the placental transfer of cadmium. However, a zinc deficiency did alter the maternal distribution of cadmium. The increased cadmium fetotoxicity associated with a maternal zinc deficiency may be caused by a maternal alteration rather than a direct effect on the fetus. Further study is necessary prior to any definitive statement concerning the effects of a maternal zinc deficiency on cadmium. fetotoxicity.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 19 (1978), S. 206-214 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary This investigation has shown that not only the extent of fetal resorption and malformation but also the types of malformation seen in rats depend upon the strain used and day of gestation. Furthermore, the effects of zinc deficiency and cadmium administration on the fetus can be at least additive, as was seen for malformations. For fetal resorption, zinc deficiency potentiated the action of cadmium.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1440
    Keywords: Renovaskuläre Hypertonie ; Renin ; Perkutane transluminale Dilatation ; Isotopennephrogramm ; Renovascular hypertension ; Renin ; Percutaneous transluminal dilatation ; Radionephrogram
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Percutaneous transluminal dilatation of a left sided renal artery stenosis was performed in a 61 year old patient with hypertension. Biochemical and hemodynamic activity of the renal artery stenosis was demonstrated by measurement of renal venous renin-activity and determination of renal plasma flow and of pre- and poststenotic blood pressure values. Shortly after the dilatation procedure hypertension disappeared and renal plasma flow increased. The described procedure might be an alternative method to renal vascular surgery.
    Notes: Zusammenfassung Bei einem 61jährigen Patienten mit renovasculärer Hypertonie bei linksseitiger arteriosklerotischer Nierenarterienstenose wurde eine perkutane transluminale Dilatation der Stenose vorgenommen. Die biochemische und hämodynamische Aktivität der Nierenarterienstenose wurde durch Messung der Plasmareninaktivität im Nierenvenenblut, Bestimmung des renalen Plasmaflusses und der prä- und poststenotischen Blutdruckwerte in der Nierenarterie belegt. Kurz nach der Dilatation der Stenose normalisierte sich der Blutdruck, und es kam zu einem Anstieg des renalen Plasmaflusses. Weitere Untersuchungen werden zeigen, ob die beschriebene Methode eine Alternative zur operativen Korrektur der Nierenarterienstenose bietet.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 56 (1978), S. 229-234 
    ISSN: 1432-1440
    Keywords: Aldosteron ; Renin ; Cortisol ; Diabetes mellitus ; Hypoaldosteronismus ; Hyperkaliämie ; Aldosterone ; Renin ; Cortisol ; Diabetes ; Hypoaldosteronism ; Hyperkalemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In three patients with diabetes and hyporeninemic hypoaldosteronism changes in renin activity, plasma aldosterone and cortisol were examined under various conditions: orthostasis and intravenous furosemide, infusion of synthetic β1–24 ACTH on two consecutive days and diurnal variations in basal hormone fluctuations. Each patient showed unmeasurably low renin activity unresponsive to orthostasis and intravenous furosemide while plasma aldosterone was below normal range. Under ACTH-infusion only marked increases in aldosterone were observed in one patient whereas cortisol responded normally in all diabetics tested. Analysis of diurnal night day fluctuations (20.00–8.00) in plasma aldosterone and cortisol revealed a close and statistically significant relationship between both hormones in each of the three patients (p〈0.05–〈0.001). Variations in plasma aldosterone thus were mediated through changes in endogenous pituitary ACTH. Compared with normal controls however, diurnal aldosterone curves were set at a lower level. Our results demonstrate that a reduced sensitivity of the adrenal gland to ACTH is not responsible for the observed subnormal plasma aldosterone levels in these patients. Therefore, the lack of circulating angiotensin II seems to be the causative reason of hypoaldosteronism. The exact mechanism of undetectable renin activity in these patients remains unknown.
    Notes: Zusammenfassung Bei drei Patienten mit Diabetes mellitus und hyporeninämischem Hypoaldosteronismus wurden Veränderungen der Plasmareninaktivität, des Plasmaaldosteron- und Plasmacortisolspiegels unter folgenden Bedingungen geprüft: Orthostase und intravenöse Furosemidapplikation, Infusion von synthetischem β1–24 ACTH an zwei aufeinanderfolgenden Tagen, Tag-Nacht-Rhythmus der basalen Hormonplasmaspiegel. Alle Patienten zeigten eine nicht meßbare und durch Orthostase und Furosemid nicht stimulierbare Reninaktivität. Gleichzeitig wurden subnormale Aldosteronplasmakonzentrationen gemessen. Unter ACTH-Infusion zeigte nur ein Patient einen deutlichen Anstieg des Plasmaaldosterons, während das Plasmacortisol in allen drei Fällen normal stimulierbar war. Die statistische Analyse der Tag-Nacht-Schwankungen von Plasmaaldosteron und Plasmacortisol zeigte in jedem der Fälle eine enge und statistisch signifikante Beziehung zwischen beiden Hormonen (p〈0,05–〈0,001). Es ist somit anzunehmen, daß Schwankungen des Plasmaaldosterons durch Veränderungen der hypophysären ACTH-Ausschüttung verursacht wurden. Jedoch war im Vergleich zu Normalpersonen die Rhythmik des basalen Plasmaaldosterons auf einem tieferen Niveau eingestellt. Unsere Ergebnisse lassen den Schluß zu, daß bei diesen Patienten nicht eine verminderte Sensitivität der Nebennierenrinde auf ACTH für die beobachteten subnormalen Aldosteronspiegel verantwortlich ist. Ursache für den Hypoaldosteronismus scheint somit der Mangel an zirkulierendem Angiotensin II zu sein. Der genaue Mechanismus der nicht meßbaren Reninaktivität bei diesem Patienten bleibt unbekannt.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-5117
    Keywords: Manganese-54 ; concentration factor ; algae ; Daphnia ; minnows
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Concentration factors (CF) of 54Mn for three aquatic species: green algae (Protococcoidal chlorella), Daphnia magna, and fathead minnows (Pimephales promelas) were determined following direct exposure to the isotope in solution. The maximum accumulation (CF = 911) in P. chlorella was reached at 48 hours of exposure; the maximum uptake (CF = 65) in Daphnia was reached at 8 hours of exposure; and the maximum accumulation (CF = 22.6) in fathead minnows was at 128 hours of exposure. The data indicate that 54Mn accumulation decreases with ascent up a theoretical aquatic food chain when water is the only source of contamination.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Parasitology research 58 (1978), S. 91-96 
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Applying the indirect fluorescent antibody technique to the infective stages of the hookwormAncylostoma caninum, it appeared that they do not show IgG antibody binding when serum from dogs infected withA. caninum was used in the test (antiserum). However, inhibiting these stages metabolically with azide or with low temperatures, IgG antibody binding to the outer surface was observed. When the inhibitory factors were removed, shedding of fluorescent substances was seen, which were obviously coming from the outer surface of the larvae. This suggests that shedding of the antigen might occur.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1955
    Keywords: Ancylostoma caninum ; Indirect Fluorescent Antibody Technique (IFAT) ; Indirect Immuno Peroxidase Technique (IIPT) ; hookworms ; cryostat sections ; body surface ; cuticle ; dogs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The Indirect Fluorescent Antibody Technique (IFAT) and the Indirect Immuno Peroxidase Technique (IIPT) have been applied to cryostat sections and intact stages of the hookworm speciesAncylostoma caninum with sera from infected dogs. Especially the role of the body surface (=cuticle (cortex, matrix, basal layer) and hypodermis) in immunity was studied. Using cryostat sections and dead intact stages as the antigen, specific antibody binding was demonstrated round the ovum membrane and the cuticle of all stages of this hookworm species. Cryostat sections of adult worms showed, that it probably is not the cuticle itself that is antigenic, but that the specific reaction that is observed consisted of a layer, covering the cortex of the cuticle. Infective and parasitic living stages, however, showed no antibody binding in contrast to the free-living stages in which specific antibody binding was demonstrated.
    Type of Medium: Electronic Resource
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  • 10
    Publication Date: 2013-10-03
    Description: The temporal and magmatic evolution of central Snake River Plain (SRP; Idaho, USA) olivine tholeiites erupted within the past 4 m.y. is evaluated here. This investigation correlates and merges both geochemical and paleomagnetic measurements to constrain the volcanic history recovered from the 340 m Regional Aquifer Systems Analysis (RASA) test well located near Wendell, Idaho. Only a handful of studies have accomplished this task of shedding light on the chemical stratigraphy of the SRP and the petrogenesis of basalts with depth, and therefore through time. Paleomagnetic relationships suggest that time breaks between individual lava flows represent a few years to decades, time breaks between flow groups represent at least a couple of hundred years or possibly much longer, while significant hiatuses in volcanism, revealed by thick sediment packages or polarity reversals (both are evidenced in this well), are inferred to last thousands to tens of thousands of years. Major element geochemistry from 52 basaltic lava flows demonstrates near primitive compositions (i.e., ~10 wt% MgO) and tholeiitic iron enrichment trends, similar to lavas from the eastern SRP. Trace element concentrations are similar to those of ocean island basalts, with enriched Ba and Pb, and light rare earth element (REE)/heavy REE ratios similar to those of many Neogene volcanics of the western Cordillera. When combined, we identify a total of 11 flow groups, which we also classify as fractionation or recharge on the basis of decreasing or increasing MgO weight percent with depth. Taking into consideration these trends, we review the potential recharge, fractionation, and assimilation processes that characterize much of SRP olivine tholeiite, and conclude that assimilation, in combination with fractional crystallization, is the dominant petrogenesis for the basalts in the central SRP. Although fractionation of Wendell parent magmas was accompanied by assimilation of crustal material, this could not have been assimilation of ancient cratonic crust. The geochemical cycles observed in this well are inferred to represent fractionation and recharge of basaltic magma from a series of sill-like layered mafic intrusions located in the middle crust, similar to what has been proposed for the processes that control the eruptive history of basalts in the eastern SRP.
    Electronic ISSN: 1553-040X
    Topics: Geosciences
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