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  • 1
    Online Resource
    Online Resource
    Determinantal Rings (1988)
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Details Availability
    Keywords: Mathematics ; Group theory ; Topological Groups ; Lie groups. ; Topological Groups, Lie Groups ; Group Theory and Generalizations ; Mathematics ; Determinantenring
    Description / Table of Contents: Determinantal rings and varieties have been a central topic of commutative algebra and algebraic geometry. Their study has attracted many prominent researchers and has motivated the creation of theories which may now be considered part of general commutative ring theory. The book gives a first coherent treatment of the structure of determinantal rings. The main approach is via the theory of algebras with straightening law. This approach suggest (and is simplified by) the simultaneous treatment of the Schubert subvarieties of Grassmannian. Other methods have not been neglected, however. Principal radical systems are discussed in detail, and one section is devoted to each of invariant and representation theory. While the book is primarily a research monograph, it serves also as a reference source and the reader requires only the basics of commutative algebra together with some supplementary material found in the appendix. The text may be useful for seminars following a course in commutative ring theory since a vast number of notions, results, and techniques can be illustrated significantly by applying them to determinantal rings
    Type of Medium: Online Resource
    Pages: Online-Ressource (VIII, 240 p, online resource)
    ISBN: 9783540392743 , 9783540194682
    Series Statement: Lecture Notes in Mathematics 1327
    URL: https://doi.org/10.1007/BFb0080378
    URL: http://dx.doi.org/10.1007/BFb0080378
    URL: https://swbplus.bsz-bw.de/bsz404655432cov.jpg
    URL: https://zbmath.org/?q=an:0673.13006
    URL: http://d-nb.info/880673214/04
    DOI: 10.1007/BFb0080378
    RVK:
    SI 850
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Primary aldosteronism by carcinoma of the adrenal cortex (1987)
    Springer
    Journal of molecular medicine 65 (1987), S. 428-432 
    Details
    ISSN: 1432-1440
    Keywords: Rare cause of primary aldosteronism ; Hypokalemic hypertension ; Diagnostic procedure ; Treatment of malignant adrenal disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A 58-year-old white woman with hypertension and severe hypokalemia was found to have a carcinoma of the left adrenal gland. Plasma renin activity was constantly under the normal limit, while plasma aldosterone levels were pathologically elevated. Plasma cortisol (8:00 a.m.) and excretion rates of urinary free cortisol were within the normal range. After an adrenalectomy, relapsing excessive aldosterone secretion was successfully treated with opDDD (Lysodrene). Ten months after the diagnosis was established, the patient died from a bleeding liver metastasis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01715766
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  • 3
    Electronic Resource
    Electronic Resource
    VERTICAL HETEROGENEITY AND MOVEOUT IN THE ONE-DIMENSIONAL MEDIUM (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 35 (1987), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Since the important contributions of Dürbaum and Dix, 30 years ago, velocity profile estimation procedures on horizontally layered and vertically heterogeneous media from seismic probing data have been based largely on hyperbolic moveout models and RMS and stacking velocity concepts. Re-examination of the fundamentals reveals that quantitative velocity heterogeneity and canonical valocity profiles have been implicit factors for moveout modelling and for profile inversion in the use of the Dix procedure. Heterogeneity h is the ratio (and vRMS the geometric or harmonic mean) of the path-average and time-average velocities for a raypath or, in a more restricted sense, for the normal ray belonging to a velocity profile. The canonical profile for a given velocity profile or profile segment is a moveout-equivalent monotonically increasing ramp-like profile.The ramp or constant gradient in depth is the simplest velocity profile approximator which can explicitly accommodate velocity heterogeneity. A ramp model structure is detailed which facilitates moveout simulation and model parameter estimation, and the parametric effects are explored. The horizontal offset range is quantified for which this model can give good moveout approximations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1987.tb00845.x
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  • 4
    Electronic Resource
    Electronic Resource
    Pulse radiolysis equipment: A setup for simultaneous multiwavelength kinetic spectroscopy (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 363-368 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A setup for pulse radiolysis experiments is described consisting of the following main components: an array of 15 photomultipliers attached to a spectrograph (allowing 4032 spectra to be recorded with a time resolution of 500 ns per spectrum), self-regulating high-voltage supply for the photomultipliers, computer-controlled solution mixing and dispensing system, and provisions for continuous dose variation of the FEBETRON-accelerator electron beam. The general performance of the system is discussed and construction or electronic details are given for special components.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139289
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  • 5
    Electronic Resource
    Electronic Resource
    Biochemical Analysis of Bone Compacta in Osteogenesis Imperfecta (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 543 (1988), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1988.tb55322.x
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis, characterization, and reactivity of .alpha.-ketoacyl complexes of platinum(II) and palladium(II). Crystal structures of trans-Pt(PPh3)2(Cl)(COCOPh) and cis-Pt(PPh3)2(COPh)(CO2Me) (1987)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 109 (1987), S. 148-156 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00235a023
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  • 7
    Electronic Resource
    Electronic Resource
    Diazepam and N-desmethyldiazepam are found in rat brain and adrenal and may be of plant origin (1987)
    Springer
    Journal of neural transmission 70 (1987), S. 383-398 
    Details
    ISSN: 1435-1463
    Keywords: diazepam ; N-desmethyldiazepam ; endogenous benzodiazepine receptor ligand
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Benzodiazepine-binding inhibitory (BBI) activity was detected in aqueous extracts of brain and peripheral tissues of rats. The BBI activity in brain and in adrenals was, at least partially, due to the presence of N-des-methyldiazepam and diazepam as shown by HPLC, UV-spectroscopy and mass spectrometry. In addition, BBI activity was found in standardized rat food, as well as in a variety of cereals and in other nutritive plant products. In wheat grains diazepam and N-desmethyldiazepam could be identified by HPLC and analysis by gas chromatography combined with mass spectrometry. The estimated amounts of the two benzodiazepines present in rat brain and adrenals and in wheat grains were in the low ppb range. Since laboratory contamination was rigorously excluded we conclude that diazepam and N-desmethyldiazepam are naturally occurring compounds. These findings may explain their occurrence in the brain and adrenals of animals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01253613
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  • 8
    Electronic Resource
    Electronic Resource
    Cellular calcium metabolism in primary hypertension (1987)
    Springer
    Journal of molecular medicine 65 (1987), S. 155-160 
    Details
    ISSN: 1432-1440
    Keywords: Hypertension ; Ca2+
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Several disturbances of cellular Ca2+ metabolism have been described in essential hypertension and in the spontaneously hypertensive rat. Possibly the elevation of intracellular free Ca2+ concentration in arterial smooth muscle cells is one important step in the pathogenesis of primary hypertension. In most studies a decreased energy-dependent Ca2+ transport has been proposed as a mechanism. However, disturbances in cellular Ca2+ metabolism, which can be exclusively ascribed to essential hypertension, have not yet been found. The cause of altered cellular Ca2+ transport in primary hypertension may either be a genetically determined defect of membrane transport or a still-unidentified humoral factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01728224
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  • 9
    Electronic Resource
    Electronic Resource
    Mechanismus und Bedeutung der arteriolären Media-Hypertrophie/Hyperplasie bei der arteriellen Hypertonie (1988)
    Springer
    Journal of molecular medicine 66 (1988), S. 1151-1159 
    Details
    ISSN: 1432-1440
    Keywords: Arterial Hypertension, structural changes ; Arteriolar hypertrophy and hyperplasia ; Na+/Li+-exchange ; Na+/H+-antiport ; Phosphatidylinositol metabolism ; Growth factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The most common haemodynamic abnormality in human essential hypertension is an increase in systemic vascular resistance. Morphologic substrate for increased flow resistance is a narrowing of the lumen of arteriolar resistance vessels. During the course of essential hypertension, this is associated with an increase in wall (mainly media) thickness due to hypertrophy and hyperplasia of vascular smooth muscle cells. In contrast to concepts interpreting media thickening strictly as structural adaptation to increased perfusion pressure, various lines of evidence also point to pressure independent factors. In this context, extracellular factors such as “growth factors” as well as alterations in the activity of intracellular messenger systems must be considered. Recent studies suggest that substances generally known to act as vasoconstrictors such as angiotensin II, noradrenaline and arginine-vasopressin may also stimulate vascular smooth muscle cell growth and proliferation. Intracellular messenger systems with possible significance in the response to trophins and/or mitogens of vascular smooth muscle cells are phospholipase C, protein kinase C and the Na+/H+-antiport. These systems have been demonstrated to be altered in hypertension supporting the concept that one endogenous factor in human essential hypertension with pathophysiological significance, at least in a subgroup of patients, may be an enhanced reactivity of vascular smooth muscle cells to trophic and mitogenic stimuli. In this context, intracellular messenger systems such as phospholipase C, protein kinase C and/or the Na+/H+-antiport may play an important pathophysiological role.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01727661
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  • 10
    Electronic Resource
    Electronic Resource
    Die Bedeutung der Dopplerblutströmungsmessung zur Erkennung der Plazentainsuffizienz (1988)
    Springer
    Archives of gynecology and obstetrics 244 (1988), S. S12 
    Details
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01080103
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