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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 112 (1974), S. 506-511 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Small-strain theory has been applied to find out the deformation and stresses in the interior of the earth considered as a self-gravitating, non-homogeneous, isotropic sphere of heterogeneous density distribution. Stresses have been compared at different layers due to different density distributions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 112 (1974), S. 58-66 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The effects of non-homogeneity on the stresses in respect of rigidity have been exhibited in a gravitating sphere i) with homogeneous core and ii) with rigid core and compared graphically with those in the corresponding homogeneous case. The effect has been computed on the stress concentration on the interface and the region of compression and extension.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 98 (1972), S. 29-34 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary In this paper the effects of non-homogeneity which is assumed both in elastic properties and in density on the stresses and extension in a complete rotating cylinder is discussed and the results are compared with those in the homogeneous case.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Anatomy and embryology 199 (1999), S. 207-214 
    ISSN: 1432-0568
    Keywords: Key words Blood vessels ; Leydig cells ; Sertoli cells ; Peritubular cells ; Microcirculation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Human testicular capillaries interconnect Leydig cells and seminiferous tubules. Microcirculation and blood flow are therefore essential for the maintenance of spermatogenesis. The expression and the localisation of ET (endothelin) and its receptors in testicular tissue, in seminiferous tubules and in human testicular capillaries were studied. ET-1 mRNA was detected in whole testicular tissue and in seminiferous tubules whereas isolated testicular capillaries were negative. Big ET-1 (Big endothelin 1) and ET peptides were localised in Leydig and Sertoli cells whereas interstitial and intramural capillaries (within the lamina propria) remained unstained. ET was also found in mature spermatids. ET-A (endothelin receptor A) mRNA was detected in seminiferous tubules and whole testicular tissue whereas testicular blood vessels were negative. ET-A immunostaining was displayed in Leydig and Sertoli cells and in spermatids. ET-B (endothelin receptor B) mRNA was detected in whole testicular tissue, seminiferous tubules and in testicular capillaries. ET-B peptide was prominent in Leydig cells, peritubular cells, endothelial cells and pericytes of interstitial and intramural capillaries as well as in vascular endothelial and smooth muscle cells. From these results we conclude that ET produced in Leydig and Sertoli cells can act in a paracrine manner via ET-B on the human testicular microvasculature and the peritubular cells. The presence of both ET-A and ET-B in Leydig cells and of ET-A in Sertoli cells leads to the assumption that ET could influence these cells as an autocrine factor.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0495
    Keywords: Key words Drainage system ; Morphometric analysis ; Infiltration rate ; Discriminant analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  A well-developed drainage network is carved in the hard calcretized and gypcretized gravelly sand of the Pleistocene Dibdibba Formation in northern Kuwait. The present-day aridity suggests that these drainages were developed during pluvial episodes that took place in the post-Pleistocene time and, therefore, are considered as paleo-drainage. Detailed morphometrical analysis of the endoeric drainage systems was performed and the degree of correlation among their different morphometric parameters was investigated. Based on these parameters, the studied drainage basins are statistically grouped into three groups. Such grouping was confirmed by discriminant analysis. The categorical data analysis demonstrated the dependence of these groupings on the surface geology, regional topography, and local geomorphological settings. Infiltration measurements revealed that the drainage bedrocks have a low infiltration rate (〈20 cm h–1), whereas the drainage fill deposits have a relatively high infiltration rate (67–30 cm h–1). The impact of the drainage system pattern and morphometry on the hydrological conditions is discussed and potential near-surface low salinity to freshwater aquifers is delineated. The role of the studied drainage systems in the occurrence of mobile sand and sand dunes, rainwater harvesting, and land capability are discussed.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Journal of biomimetics, biomaterials, and tissue engineering Vol. 1 (July 2008), p. 1-36 
    ISSN: 1662-100X
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Biology , Technology
    Notes: The paper reports about different kind of sutures, their suitability and performance. An ideal suture should possess many characteristics such as - easy to handle, bio-compatibility, minimal tissue reaction, resistance to bacterial growth, adequate tensile strength and elasticity, knot security, strength loss versus healing rate of tissues. Selection of suture is often very complex for satisfying host of physical, mechanical and biological properties, and fulfilling contradictory requirements in varied applications. The paper develops an understanding about the selection of suture depending on the varied requirement. Past research work pertaining to the development of suture as reported in this paper, provides insight about the suitability of different surgical sutures and possible direction of future research
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Bingley : Emerald
    International journal of clothing science & technology 16 (2004), S. 394-403 
    ISSN: 0955-6222
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper reports an experimental investigation into the effect of laundering on seam tensile properties with the variation of stitch density, linear density of sewing threads and composition of base material. Tensile properties such as initial modulus, secant modulus, seam strength, strain at fracture and work up to fracture increase with stitch and linear density of sewing threads. The impact of coarser yarn is greater on seam properties of polyester-cotton fabric than cotton fabric. The tensile properties except seam strain are reduced due to laundering. Reduction in initial modulus and secant modulus due to laundering is higher for polyester-cotton fabric whereas decrease in seam strength, seam efficiency and strain at break is greater for coarser sewing thread.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Nutritional Biochemistry 2 (1991), S. 72-78 
    ISSN: 0955-2863
    Keywords: amino acids ; arginine ; ferrets ; hyperammonemia
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Chemical Physics Letters 79 (1981), S. 109-114 
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 29 (1991), S. 0 
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The residential areas of Kuwait City have been affected by a rise in the subsurface-water level in recent years, causing waterlogging and flooding of the basements of buildings. To study this phenomenon, and to ascertain its causes, a numerical aquifer simulation model was developed. The aquifer model showed that, over the period 1961-1985, the net yearly addition to the aquifer storage due to the contribution from man-made sources like sewage systems, irrigation, and water distribution networks, ranged from 8,300 to 10,100 m3 d−1, causing a subsurface-water-level rise of about 5 m locally, resulting in high water-table conditions. A maximum local rise in the water table of 2.5 m was predicted between the end of 1985 and 1990, if no remedial actions are undertaken. Preventive methods to reduce or eliminate recharge from man-made activities would help control the water-level rise and even lower the water table in affected areas. Remedial measures to lower and maintain the subsurface-water level at acceptable depths would entail the withdrawal of significant quantities of ground water.
    Type of Medium: Electronic Resource
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