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  • Springer  (74)
  • Wiley  (35)
  • American Society of Hematology  (6)
  • 1995-1999  (115)
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  • 1
    Electronic Resource
    Electronic Resource
    Crystal structures of a series of 3,7-bis-(arylazo)-1,3,5,7-tetraazabicyclo[3.3.1]nonanes (1998)
    Springer
    Journal of chemical crystallography 28 (1998), S. 797-809 
    Details
    ISSN: 1572-8854
    Keywords: Crystal structure ; bicyclononane ; triazene ; bis-triazene ; nitrile substituent ; nitro substituent ; trifluoromethyl substituent ; hydrogen bonding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal and molecular structure of a series of 3,7-bis(arylazo)-1,3,5,7-tetraazabicyclo[3.3.1] nonanes (1a–d) have been determined by single crystal X-ray diffraction analysis. All four compounds have the same feature, that the tetraazabicyclononane unit assumes a cage-like structure with the aryltriazene moieties lying parallel to one another so that the aryl rings are held together by π – π stacking. Crystal data: 1a C17H18N10O4, triclinic, space group P − 1, a = 9.8899(10), b = 13.0845(13), c = 16.458(2) Å, α = 94.095(2)°, β = 107.004(2)°, γ = 111.027(2)°, V = 1863.5(3) Å3 and Z = 4; 1b, C19H18F6N8, orthorhombic, space group Pbca, a = 15.3210(8), b = 10.9512(6), c = 24.5698(13) Å, V = 4122.4(4) Å3 and Z = 8; 1c C19H18N10, monoclinic, space group P21/n a = 6.3742(6), b = 13.7343(13), c = 21.542(2)Å, β = 97.738(2)°, V = 1868.8(3) Å3, and Z = 4; 1d, C19H18N10, monoclinic, space group P21/c, a = 18.205(2), b = 17.398(2), c = 12.784(12) Å, β = 109.480(2)°, V = 3818.0(6) Å3, and Z = 8.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021823619465
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  • 2
    Electronic Resource
    Electronic Resource
    The crystal structure of 2-benzoylpyridine N4-methyl-N4-phenylthiosemicarbazone (1996)
    Springer
    Journal of chemical crystallography 26 (1996), S. 861-864 
    Details
    ISSN: 1572-8854
    Keywords: Thiosemicarbazone ; 2-benzoylpyridine ; N4-substituted ; hydrogen bonding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract 2-Benzoylpyridine N4-methyl-N4-phenylthiosemicarbazone, HBz4MePh, monoclinic,P2(1)/n a=9.141(2),b=18.507(4),c=11.401(2) Å, β=110.58(3)o,V=1805.6(9) Å3,Z=4, μ=1.655 mm−1. HBz4MePh crystallizes in a hydrogen bonded Z isomeric conformation with respect to the C7−N2 bond. The intramolecular hydrogen bond is between N3−H...N1, and the S atom isZ to the azomethine nitrogne, N2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01670320
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  • 3
    Electronic Resource
    Electronic Resource
    The AFM as a tool for chromosomal dissection – the influence of physical parameters (1998)
    Springer
    Applied physics 66 (1998), S. S579 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 87.64.Dz; 87.80.+s
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051205
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  • 4
    Electronic Resource
    Electronic Resource
    Analytical Techniques for Quantifying Direct, Residual, and Oral Exposure of an Insect Parasitoid to an Organophosphate Insecticide (1996)
    Springer
    Bulletin of environmental contamination and toxicology 57 (1996), S. 683 -690 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900244
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  • 5
    Electronic Resource
    Electronic Resource
    Parathyroid Hormone-Related Protein (1–37) Induces cAMP Response in Human Osteoblast-Like Cells (1998)
    Springer
    Calcified tissue international 62 (1998), S. 250-254 
    Details
    ISSN: 1432-0827
    Keywords: Key words: PTHrP – PTH — cAMP — Human osteoblast-like cells — CHO cells — UMR 106-01 cells.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. During recent years parathyroid hormone-related protein (PTHrP) research has been focused on the physiological functions of different fragments of the PTHrP molecule. Here we demonstrate that PTHrP (1–37) induced cyclic adenosine monophosphate (cAMP) response in primary human osteoblast-like cells, which were well characterized by the presence of alkaline phosphatase activity and osteocalcin production after stimulation with 1,25-dihydroxyvitamin D3. However, there was no cAMP response to PTHrP (58–77). Furthermore, the response to PTHrP (1–37) was dose dependent, with a significant increase at 1 nM. The presence of PTHrP (1–37)-induced cAMP response in human osteoblast-like cells implies that aminoterminal PTHrP fragments may exert important functions in the bone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900425
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  • 6
    Electronic Resource
    Electronic Resource
    Categorical models for local names (1996)
    Springer
    Higher-order and symbolic computation 9 (1996), S. 77-107 
    Details
    ISSN: 1573-0557
    Keywords: Lambda-calculus ; functional programming ; dynamic allocation ; category theory ; monads
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract This paper describes the construction of categorical models for thenu-calculus, a language that combines higher-order functions with dynamically creatednames. Names are created with local scope, they can be compared with each other and passed around through function application, but that is all. The intent behind this language is to examine one aspect of the imperative character of Standard ML: the use of local state by dynamic creation of references. The nu-calculus is equivalent to a certain fragment of ML, omitting side effects, exceptions, datatypes and recursion. Even without all these features, the interaction of name creation with higher-order functions can be complex and subtle; it is particularly difficult to characterise theobservable behaviour of expressions. Categorical monads, in the style of Moggi, are used to build denotational models for the nu-calculus. An intermediate stage is the use of a computational metalanguage, which distinguishes in the type system between values and computations. The general requirements for a categorical model are presented, and two specific examples described in detail. These provide a sound denotational semantics for the nu-calculus, and can be used to reason about observable equivalence in the language. In particular a model using logical relations is fully abstract for first-order expressions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01806033
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  • 7
    Electronic Resource
    Electronic Resource
    EVALUATION OF TWO FRACTAL METHODS FOR MAGNETOGRAM IMAGE ANALYSIS (1997)
    Springer
    Solar physics 174 (1997), S. 297-309 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Fractal and multifractal techniques have been applied to various types of solar data to study the fractal properties of sunspots as well as the distribution of photospheric magnetic fields and the role of random motions on the solar surface in this distribution. Other research includes the investigation of changes in the fractal dimension as an indicator for solar flares. Here we evaluate the efficacy of two methods for determining the fractal dimension of an image data set: the Differential Box Counting scheme and a new method, the Jaenisch scheme. To determine the sensitivity of the techniques to changes in image complexity, various types of constructed images are analyzed. In addition, we apply this method to solar magnetogram data from Marshall Space Flight Center's vector magnetograph.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004908523578
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  • 8
    Electronic Resource
    Electronic Resource
    Penicillium discolor, a new species from cheese, nuts and vegetables (1997)
    Springer
    Antonie van Leeuwenhoek 72 (1997), S. 119-126 
    Details
    ISSN: 1572-9699
    Keywords: Penicillium discolor sp. nov. ; cheese ; nuts ; chaetoglobosin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The new species Penicillium discolor, frequently isolated from nuts, vegetables and cheese is described. It is characterised by rough, dark green conidia, synnemateous growth on malt agar and the production of the secondary metabolites chaetoglobosins A, B and C, palitantin, cyclopenin, cyclopenol, cyclopeptin, dehydrocyclopeptin, viridicatin and viridicatol. It also produces the mouldy smelling compounds geosmin and 2-methyl-isoborneol, and a series of specific orange to red pigments on yeast extract sucrose agar, hence the epithet discolor. P. discolor resembles P. echinulatum morphologically but on basis of the secondary metabolites is also related to P. expansum, P. solitum and P. crustosum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1000244502608
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  • 9
    Electronic Resource
    Electronic Resource
    Cloning and expression of the Vitreoscilla hemoglobin gene in pseudomonads: effects on cell growth (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 419-424 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  The gene (vgb) encoding the hemoglobin (VtHb) of Vitreoscilla sp. was cloned into a broad-host-range vector and stably transformed into Pseudomonas putida, Pseudomonas aeruginosa, and Xanthomonas maltophilia. vgb was stably maintained and expressed in functional form in all three species. When growth of the P. aeruginosa and X. maltophilia transformants in Luria-Bertani medium was compared with that of each corresponding untransformed strain, the VtHb-producing strains reached slightly higher maximum viable cell numbers, had significantly increased viability after extended times in culture, and, like E. coli that produces VtHb, had significantly lower respiration rates. The VtHb-producing strain of P. putida also reached a slightly higher maximum viable cell number than its corresponding untransformed strain, but was significantly less viable after extended times in culture and, unlike the case in E. coli, had a generally higher respiration rate than the untransformed strain. When growth was monitored by absorbance, the results were similar to those obtained with viable cell counts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050576
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  • 10
    Electronic Resource
    Electronic Resource
    Cloning and expression of the Vitreoscilla hemoglobin gene in pseudomonads: effects on cell growth (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 419-424 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The gene (vgb) encoding the hemoglobin (VtHb) of Vitreoscilla sp. was cloned into a broad-host-range vector and stably transformed into Pseudomonas putida, Pseudomonas aeruginosa, and Xanthomonas maltophilia. vgb was stably maintained and expressed in functional form in all three species. When growth of the P. aeruginosa and X. maltophilia transformants in Luria-Bertani medium was compared with that of each corresponding untransformed strain, the VtHb-producing strains reached slightly higher maximum viable cell numbers, had significantly increased viability after extebded times in culture, and, like E. coli that produces VtHb, had significantly lower respiration rates. The VtHb-producing strain of P. putida also reached a slightly higher maximum viable cell number than its corresponding untransformed strain, but was significantly less viable after extended times in culture and, unlike the case in E. coli, had a generally higher respiration rate than the untransformed strain. When growth was monitored by absorbance, the results were similar to those obtained with viable cell counts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00169938
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