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  • 1
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Journal of the American Chemical Society 85 (1963), S. 2616-2621 
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Journal of the American Chemical Society 116 (1994), S. 7341-7348 
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 54 (1992), S. 153-176 
    ISSN: 0066-4278
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Medizin , Biologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology and Plant Molecular Biology 47 (1996), S. 509-540 
    ISSN: 1040-2519
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Biologie
    Notizen: Abstract Plant gene responses to changing carbohydrate status can vary markedly. Some genes are induced, some are repressed, and others are minimally affected. As in microorganisms, sugar-sensitive plant genes are part of an ancient system of cellular adjustment to critical nutrient availability. However, in multicellular plants, sugar-regulated expression also provides a mechanism for control of resource distribution among tissues and organs. Carbohydrate depletion upregulates genes for photosynthesis, remobilization, and export, while decreasing mRNAs for storage and utilization. Abundant sugar levels exert opposite effects through a combination of gene repression and induction. Long-term changes in metabolic activity, resource partitioning, and plant form result. Sensitivity of carbohydrate-responsive gene expression to environmental and developmental signals further enhances its potential to aid acclimation. The review addresses the above from molecular to whole-plant levels and considers emerging models for sensing and transducing carbohydrate signals to responsive genes.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Oxford BSL : Blackwell Science
    Alimentary pharmacology & therapeutics 11 (1997), S. 0 
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background: Ranitidine hydrochloride (Zantac) is one of the most extensively studied and widely used drugs of all time. This has provided an excellent opportunity to define its safety profile. Methods: Data from 189 controlled clinical trials in which more than 26000 patients received daily doses of ranitidine for 4 weeks or more were reviewed. More than 80% of patients were treated with up to 300 mg ranitidine daily; the remaining patients received doses of up to 1200 mg daily. Eighty-seven trials were placebo controlled. Analyses of post-marketing surveillance and a database of all spontaneously reported adverse events were also evaluated. Results: Overall in the clinical trial programme adverse events were reported by 20% of those receiving ranitidine compared with 27% of those receiving placebo. The pattern of events was similar in all treatment groups with no evidence of dose-related toxicity in regimens encompassing an eightfold range of therapeutic doses. Similarly in a programme of studies designed to evaluate a dose of ranitidine of 75  mg for non-prescription (over-the-counter) use in the treatment of heartburn, ranitidine was not associated with an adverse event profile distinct from that of placebo. Analysis of spontaneously reported adverse event data allowed identification of rare idiosyncratic events. Conclusions: Review of data from a large population of controlled clinical trials with analyses of postmarketing surveillance studies and spontaneously reported adverse events confirmed the excellent safety profile of ranitidine.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 47 (1991), S. 26-29 
    ISSN: 1600-5759
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    OR spectrum 13 (1991), S. 37-44 
    ISSN: 1436-6304
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Wirtschaftswissenschaften
    Beschreibung / Inhaltsverzeichnis: Summary The following contribution describes the planning of the production in a metallurgical plant with four blast furnaces. Basing on a fixed demand for pig iron per day which is to be fulfilled, it is to decide, how the production is to distribute among the four blast furnaces, when the costs of production are to be minimized. Subsequently the problem is extended by changing the demand for pig iron step by step. The optimal solution of this problem is achieved by using the methods of linear programming and mathematical statistics.
    Notizen: Zusammenfassung Der folgende Beitrag beschreibt die Produktionsplanung für ein Hochofenwerk mit vier Hochöfen. Ausgehend von einer fest vorgegebenen Erzeugungsmenge muß entschieden werden, wie die Produktion auf vier Hochöfen zu verteilen ist, damit die Produktionskosten das Minimum erreichen. Für die Lösungsdarstellung wird die zu erzeugende Roheisenmenge schrittweise verändert. Die optimale Lösung wird mit Hilfe der Linearen Optimierung und der mathematischen Statistik ermittelt.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    Journal of molecular medicine 72 (1994), S. 277-282 
    ISSN: 1432-1440
    Schlagwort(e): Idiopathic membranous glomerulonephritis ; Treatment
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Because of the high rate of spontaneous remission, treatment of membranous nephropathy with prednisolone and chlorambucil is still controversial. The aim of this study was to give this therapy only to those patients at risk of developing renal insufficiency and to test the efficacy of a low-dose therapeutic regimen. Seventeen patients with more than 10 g protein excretion per day (mean 16.9) and/or a deterioration in renal function (mean serum creatinine, 162 μmol/l) were included. Serum total protein, serum lipids, proteinuria, serum creatinine, and blood pressure were measured, along with the diuretic and antihypertensive medication. The observation time before the start of treatment was 27 ± 27 months. Steroids were given during months 1, 3, and 5 (methylprednisolone 3 × 500 mg intravenously) prednisolone 0.5 mg/kgBW daily per os for 1 week, then tapered by 0.1 mg/kg BW/week for 1 month. Chlorambucil was given during months 2, 4, and 6 at a dose of 0.12 mg/kgBW daily. At the end of treatment proteinuria had significantly decreased (mean of all patients, 7.8 ± 1.4 g/d) in all patients. Six months after the end of treatment proteinuria was significantly lower than at baseline in 14 of 17 patients. Hypoproteinemia and hyperlipidemia had improved; diuretic and antihypertensive medication were reduced. Elevated serum creatinine decreased in 7 of 9 patients (pretreatment, 227 ± 39 μmol/1; 6 months, 176 ± 28 μmol/l). Nonresponders with respect to serum creatinine responded with respect to proteinuria. Regarding adverse effects, two patients complained of dyspepsia while taking steroids; during chlorambucil treatment two patients experienced nausea and lack of appetite, and one developed leukopenia (1600/μl). Chlorambucil was stopped and cell counts normalized 2 weeks later. We conclude that low-dose prednisolone/chlorambucil is both safe and efficient in the majority of patients with severe membranous nephropathy.
    Materialart: Digitale Medien
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    Journal of molecular medicine 70 (1992), S. S120 
    ISSN: 1432-1440
    Schlagwort(e): Hypertension ; Kidney ; Antihypertensive drugs
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Antihypertensive therapy influences kidney function by different mechanisms depending on the mode of action of the drug used. The GFR is improved by calcium entry blockers and ACE inhibitors, unaffected by vasodilators, α-blockers and centrally acting sympatholytics and impaired by β-blockers. The same is true for renal blood flow and is due to changes of renal vascular resistance. Renal sodium excretion is impaired mostly by vasodilators, by α-blockers, sympatholytics and β-blockers; in contrast, calcium entry blockers and ACE inhibitors acutely induce natriuresis. The RAAS is stimulated by vasodilators, unaffected by α-blockers and sympatholytics and suppressed by β-blockers. Plasma catecholamines are stimulated by vasodilators and suppressed by centrally acting sympatholytics and unaffected by the others. Induction of acute renal functional impairment is reported for ACE inhibitors under conditions of compromised renal perfusion pressure such as in renal artery stenosis. These data from the literature reviewed are supported by our own experimental data on sodium balance under different drugs and micropuncture data in experimental renal artery stenosis. To achieve effective antihypertensive treatment with a low profile of side effects, careful monitoring of renal function seems to be mandatory.
    Materialart: Digitale Medien
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  • 10
    ISSN: 1420-908X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
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