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  • 1990-1994  (215)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxidative Regeneration of Spent Molybdate and Tungstate Hydrotreating Catalysts (1994)
    s.l. : American Chemical Society
    Energy & fuels 8 (1994), S. 435-445 
    Details
    ISSN: 1520-5029
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ef00044a023
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation of highly isotactic poly(vinyl alcohol) (1993)
    s.l. : American Chemical Society
    Macromolecules 26 (1993), S. 559-560 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00055a025
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  • 3
    Electronic Resource
    Electronic Resource
    Morphology and magnetic properties of ultrafine ZnFe2O4 particles (1990)
    Springer
    Applied physics 50 (1990), S. 13-16 
    Details
    ISSN: 1432-0630
    Keywords: 75.50.-y ; 76.80.+y ; 61.50.-f
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Well-crystallized ultrafine ZnFe2O4 particles of several nanometers in size have been prepared by the coprecipitation method, and their particle morphology and magnetic properties, especially at low temperatures, examined. Room-temperature X-ray diffraction, transmission electron microscopy, magnetization measurements at various temperatures from 300 K to 4.2 K, and Mössbauer spectroscopy at various temperatures from 300 K to 4.2 K, and at 4.2 K with a longitudinal magnetic field of 16.4 kOe applied have been employed. The formation of short-range and long-range magnetic order in small ZnFe2O4 particles above and below approximately 30 K is discussed. Below 30 K, the appearance of spontaneous magnetization and its hysteretic property is confirmed for small ZnFe2O4 particles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323947
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  • 4
    Electronic Resource
    Electronic Resource
    Removal of famotidine by haemodialysis in elderly anuric patients (1990)
    Springer
    European journal of clinical pharmacology 38 (1990), S. 313-314 
    Details
    ISSN: 1432-1041
    Keywords: famotidine ; anuric patients ; haemodialysis ; H2-receptor antagonist ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The effect of haemodialysis on the pharmacokinetics of oral famotidine has been studied in five elderly anuric patients. Famotidine 20 mg was administered in a cross-over design to patients on and not on haemodialysis. The elimination rate constant of haemodialysis (k) was 4.6-fold larger than the systemic elimination rate constant (ke). Although the mean maximum serum concentration of famotidine during haemodialysis (141.5 ng·ml−1) was not significantly lower than that without haemodialysis (195.6 ng·ml−1), the AUC up to 5 h during haemodialysis was significantly decreased to 58.1% of the value without it. The data suggest that famotidine is dialysable by haemodialysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315039
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  • 5
    Electronic Resource
    Electronic Resource
    Structure of [2Fe—2S] ferredoxin I from Equisetum arvense at 1.8 Å resolution (1994)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 167-174 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Ferredoxin I (Fd I) from Equisetum arvense is an iron–sulfur protein composed of 95 amino-acid residues and one [2Fe–2S] cluster. It crystallized in the space group P21, a = 30.4, b = 57.4, c = 47.5 Å and β = 78.7° with two molecules per asymmetric unit. X-ray diffraction data up to 1.8 Å resolution were collected by using a Rigaku four-circle diffractometer. The initial model of Fd I, which was derived by the molecular replacement method using a structure of the Fd I from the blue–green alga Aphanothece sacrum, was refined by molecular dynamics simulation and a least-squares minimization with stereochemical restraints. Positional parameters and isotropic temperature factors for 1420 non-H protein atoms and 183 water molecules were refined on 13 838 observed structure factors (Fo 〉 σFo) between 10.0 and 1.8 Å resolution. The final Rfactor was 17.0%, and the standard deviation of atomic position estimated by Luzzati plot [Luzzati (1952). Acta Cryst. 5, 802–810] was 0.2 Å. The electron-density map was well defined for the two independent molecules except for the N-terminal residue and the three C-terminal residues. Equivalent Cα atoms of two independent molecules in the asymmetric unit were superposed by the least-squares method with root-mean-square deviations of 0.26 Å. Reasonable structural differences were observed at a polypeptide segment having few intramolecular interactions. Highly flexible regions of the molecule were assigned from the structural differences between the two independent molecules in the crystal and the distribution of temperature factors along the polypeptide chain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444993009588
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  • 6
    Electronic Resource
    Electronic Resource
    Crystal structural analysis of tobacco necrosis virus at 5 Å resolution (1994)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 878-883 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: X-ray diffraction intensities for tobacco necrosis virus crystals were collected at 5 Å resolution using a Weissenberg camera with a large cassette of radius 430 mm. The synchrotron radiation source at the Photon Factory was used. The crystal structure of the virus was obtained by 91 cycles of the non-crystallographic symmetry averaging. Secondary structures such as α-helices and β-structures were clearly identified in the electron-density map at 5 Å resolution. This virus resembles southern bean mosaic virus both in orientation of coat protein subunits and in their folding. Ordered and disordered parts of each subunit of tobacco necrosis virus are shorter and longer than the corresponding parts of the southern bean mosaic virus by 12 and 27 residues, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444994002787
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  • 7
    Electronic Resource
    Electronic Resource
    Human Granulocyte-Macrophage Colony-Stimulating Factor Lowers the Levels of Plasma Cholesterol with an Increase in mRNA for Very Low Density Lipoprotein Receptor in Rabbits (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 748 (1994), 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.1749-6632.1994.tb17377.x
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  • 8
    Electronic Resource
    Electronic Resource
    Dinucleotide-repeat polymorphism in DNA of rainbow trout and its application in fisheries science (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 44 (1994), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Dinucleotide–repeat DNA polymorphisms for rainbow trout, Oncorhynchus mykiss, are described. The potential applications of these markers in fisheries science are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1994.tb01279.x
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  • 9
    Electronic Resource
    Electronic Resource
    A procedure for tidal analysis with a Bayesian information criterion (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 104 (1991), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A computer algorithm for tidal analysis is developed, based on a Bayesian method proposed by Ishiguro et al. (1983). The basic assumption of the method is smoothness of the drift. This assumption is represented in the form of prior probability in the Bayesian model. Once the prior distribution is determined, the parameters used in the analysis model are obtained by maximizing the posterior distribution of the parameters. For the given data, ABIC (Akaike's Bayesian Information Criterion, Akaike 1980) is used to select the optimum values of the hyperparameters of the prior distribution and combination of parameters. The program, BAYTAP-G, can be adapted to tidal data which includes such irregularities as drift, occasional steps and disturbances caused by meteorological influences. The applicability of this program is examined using simulated data and real strain data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1991.tb05697.x
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  • 10
    Electronic Resource
    Electronic Resource
    Local effects on tidal strain measurements at Esashi, Japan (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 102 (1990), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Finite element modelling has been used to make a quantitative investigation of local factors affecting the measurement of tidal strain at the Esashi earth tide station. Factors investigated, with the approximate magnitude of the perturbation produced by each, are topography (12 per cent), regional geology (1 per cent), inhomogeneity of the elastic properties of the granodiorite from which the strainmeter tunnels were excavated (3 per cent), and the cavity effect (2 per cent). Correction for these factors reduces the average discrepancy between the observed strains (observational accuracy ~1 per cent) and those predicted from the solid earth and ocean loading tide from 23 to 8 per cent.After such correction the ratios of observed to modelled amplitudes of the O1 and M2 tides on each strainmeter are in fair agreement, but these ratios differ from strainmeter to strainmeter; they are about 7 per cent too large on the N-S and NE-SW strainmeters and 9 per cent too small on the E-W instrument. These studies illustrate the difficulties involved in relating strains measured in an observatory such as Esashi to those representative of the surrounding region and suggest that, with the level of detail and sophistication used, this relationship cannot be modelled to much better than 10 per cent. Systematic differences between results from the mid-point and free-end strainmeters imply that the effects of small-scale rock inhomogeneities have not been modelled correctly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1990.tb04577.x
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