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  • 1
    Electronic Resource
    Electronic Resource
    Guanylhydrazones with potential antileukemic activity. 1. Aza analogs of 4,4'-diacetyldiphenylurea bis(guanylhydrazone) (1973)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 16 (1973), S. 959-961 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00266a025
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  • 2
    Electronic Resource
    Electronic Resource
    Photoacoustic studies of excimer laser induced ablation of polymethylmethacrylate (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 287-290 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The ablation of polymethylmethacrylate (PMMA) at both 248 and 193 nm has been studied using photoacoustic techniques. The acoustic responses of PMMA during the ablation process are resolved into a bipolar, thermal component, and a unipolar, ablative component. This latter component is correlated to the center-of-mass velocity of the ablated material. Fluence-dependent studies show that the fragment center-of-mass velocity increases with increasing fluence even after the etch rate has reached saturation. In addition, results are presented suggesting that an increase in the absorption of the laser radiation by the fragments occurs at fluences above ∼4 J/cm2 causing a change in the profile of the ablated area.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341424
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  • 3
    Electronic Resource
    Electronic Resource
    METABOLISM OF ISOLATED RAT BRAIN PERFUSED WITH GLUCOSE OR MANNOSE AS SUBSTRATE (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 19 (1972), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— After isolated rat brain preparations were perfused with fluid containing either mannose or glucose as metabolic substrate, extracts from the rapidly frozen cerebral cortex were prepared and analysed. Brains perfused with mannose contained somewhat lower levels of glucose-6-phosphate and fructose diphosphate than those perfused with glucose but the contents of other glycolytic intermediates were quite similar in both groups. The level of mannose-6-phosphate was high in brains perfused with either glucose or mannose, but higher in the latter. In both cases, the ratio of mannose-6-phosphate to fructose-6-phosphate was very high, suggesting that phosphomannose isomerase (EC 5.3.1.8) may be important in the regulation of glycolysis. The levels of adenine nucleotides and creatine phosphate and the redox ratios were not significantly different with mannose as substrate than with glucose. The contents of free amino acids in brains perfused with mannose did not differ significantly from those in brains perfused with glucose. Our results show that mannose is a satisfactory substrate for the brain under these experimental conditions since it maintains the energy reserves and oxidative status of the cerebral tissue and does not alter the levels of amino acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1972.tb01453.x
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  • 4
    Electronic Resource
    Electronic Resource
    Maternal mortality in Hong Kong 1961–1985 (1989)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 96 (1989), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary. The maternal mortality rate in Hong Kong feil from 0·45/1000 total births in 1961 to 0·05/1000 total births in 1985. During the period between 1961 and 1985 there were a total of 438 maternal deaths and 2 193 012 births. Of the 438 deaths 150 (34%) were due to haemor-rhage during pregnancy and childbirth (ICD 640, 641, 666), 89 (20%) were due to pre-eclampsia (ICD 642, 643) and 60 (13·7%) were due to ectopic pregnancy (ICD 633). Comparison of maternal deaths by cause between the periods 1961–1965 and 1981–1985 showed an 86% reduc-tion in deaths due to haemorrhage and pre-eclampsia and a 72% reduc-tion in deaths due to ectopic pregnancy. Pulmonary embolism was not a major cause of maternal mortality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1989.tb01568.x
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  • 5
    Electronic Resource
    Electronic Resource
    Zinc deficiency is not a cause for abortion, congenital abnormality and small-for-gestational age infant in Chinese women (1985)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 92 (1985), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary. Zinc concentration in serum and hair was measured in a cross-sectional study of 437 Chinese women of whom 310 were normal controls studied at various stages of pregnancy and up to 12 months after delivery. The rest had spontaneous abortions, fetuses with a birthweight below the 10th centile for gestation or congenital abnormalities. Zinc concentration fell throughout normal pregnancy, the fall being greater in serum than in hair. There was no correlation between serum and hair levels. The infant birthweight had a positive correlation with serum level but a negative correlation with hair level. Abortion, low birthweight and congenital abnormality were not associated with low concentrations of zinc in plasma or hair.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1985.tb03067.x
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  • 6
    Electronic Resource
    Electronic Resource
    Generalized kinetic model for the uncatalyzed hydroliquefaction of coal (1986)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 25 (1986), S. 464-471 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i200033a019
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  • 7
    Electronic Resource
    Electronic Resource
    EXPRESSION OF MHC CLASS II PRODUCTS ON HUMAN COLORECTAL CANCER AN IMMUNOHISTOLOGICAL AND FLOW CYTOMETRIC STUDY (1986)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 13 (1986), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The MHC status of epithelial cells from 32 primary colorectal neoplasms, villous adenomata (VA; 2) and inflammatory bowel disease (IBD; 3) were evaluated using a panel of monoclonal antibodies (mAbs). Class I antigens and β2 microglobulin (β2m) were expressed on all normal, benign, inflammatory and malignant epithelia with the exception of two carcinomas. A more complex pattern of reactivity was encountered with anti-class II mAbs. Some expression was detected on normal glandular and luminal epithelium, particularly adjacent to the tumour. Inflammatory tissues, VA and 23/32 carcinomas were also antigen-positive, the proportion of stained epithelial cells ranging from 5% to 90%. Expression was usually non-coordinate, DR being the predominant specificity followed by DP and DQ, which is suggestive of independent D region gene regulation. The hypothesis that class II expression is induced in vivo by locally generated IFN γ was not confirmed by in vitro treatment with this agent of epithelial colorectal carcinoma-derived cell lines. These provisional data suggest that although IFN γ may be a necessary stimulus for class II expression it is insufficient and that other factors also influence the responsiveness of tumour cells in this respect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1986.tb01102.x
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  • 8
    Electronic Resource
    Electronic Resource
    Diffusion of the galactic cosmic rays in the vicinity of the solar system (1985)
    Springer
    Astrophysics and space science 109 (1985), S. 87-97 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Cosmic-ray propagation in the vicinity of 1 kpc from the Sun is considered. The data on the 1012–1015 eV particle anisotropy, on 1012 eV electron spectrum, and on temporal cosmic-ray variations are analyzed. The diffusion coefficientD(1012–1013 eV)=1029–1030 cm2s−1 inferred from the analysis coincides with its standard value in the large-halo model withh=15 kpc. The total power of cosmic-ray generation, about 3×1049 erg per SN in the proton component and about 1048 erg per SN in the electron component, typical of the galactic diffusion model is in agreement with the obtained parameters of local sources.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651016
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  • 9
    Electronic Resource
    Electronic Resource
    Trace element geochemistry and genesis of the copper ore deposits of the Singhbhum shear zone, Eastern India (1972)
    Springer
    Mineralium deposita 7 (1972), S. 292-313 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Zusammenfassung Als Beitrag zur Klärung der Genese der Kupferlagerstätten in der Singhbhum Shear Zone, Indien, wurden geochemische Untersuchungen an Erzen und Nebengestein durchgeführt. Spurengehalte von Cu, Co, Ni, Pb, Zn, Cd, Ag, Mn, Hg wurden mit Hilfe der AAS bestimmt, ihre Verteilung innerhalb der Zone und der angrenzenden Gesteinstypen wird diskutiert. Auf Grund der vorliegenden geochemischen Daten wird folgende Deutung zur Entstehung der Erzlagerstätten gegeben: Die Bildung der Singhbhum-Erzvorkommen ist das Ergebnis einer Folge langandauernder und sich überschneidender geologischer Prozesse, wie intensiver Scherung, syntektonischer Granitisation und damit verbundener Mobilisierung der oben genannten Elemente. Die präkambrischen Metasedimente und Metavulkanite innerhalb der Scherzone und ihrer näheren Umgebung sind als „Muttergesteine“ der erzbildenden Elemente anzusehen. Die Bildung der Lagerstätte ist das Resultat der Diffusion von Lösungen und ihres Absatzes in physikalisch-chemisch günstigen „Struktur-Fallen“, gebildet im Anschluß an die Scherung.
    Notes: Abstract The genesis of the copper ore deposits of the Singhbhum shear zone, India, has been worked out through a detailed geochemical examination of the ores and the country rocks. Following different techniques of atomic absorption, the abundances of Cu, Co, Ni, Pb, Zn, Cd, Ag, Mn and Hg were determined and the trace element characteristics of the principal rock units in and outside the shear zone have been compiled and critically evaluated. The data suggest that the ore deposits are the result of a sequence of long-continued and over-lapping geological processes culminating in intense shearing, syntectonic granitization and considerable mobilization of the ore elements. The Precambrian metasedimentary and metavolcanic rocks of the shear zone, as well as those enclosing it, served as the source, while diffusion of the ore constituents and their precipitation in physicochemically favourable structural traps, formed in response to shearing, resulted in the formation of the deposits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206791
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  • 10
    Electronic Resource
    Electronic Resource
    The initial and residual agronomic effectiveness of some Indian, USA and Australian rock phosphates (1987)
    Springer
    Nutrient cycling in agroecosystems 12 (1987), S. 201-218 
    Details
    ISSN: 1573-0867
    Keywords: relative effectiveness ; apatites ; wheat ; initial and residual effectiveness ; bicarbonate extractable phosphorus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The initial and residual agronomic effectiveness of six apatite rock phosphates from India, one from the USA (North Carolina) and one from Australia (Queensland) were evaluated in a pot trial with wheat on a lateritic soil. All of the Indian rock phosphates were very poor sources of phosphorus. Values of initial effectiveness relative to monocalcium phosphate ranged from 〈 0.0001 to 0.02 and from 〈 0.0001 to 0.008 for measurements based on yield and phosphorus uptake respectively. The residual effectiveness relative to freshly applied monocalcium phosphate was determined by growing a second crop on the fertilized soils. The effectiveness of the Indian rock phosphates remained very low ranging from 〈 0.0001 to 0.002 and from 〈 0.0001 to 0.0004 for yield and phosphorus uptake respectively. Queensland and North Carolina rock phosphates were much superior to the Indian sources with initial effectiveness values in terms of yield of 0.08 and 0.37 and residual effectiveness values of 0.02 and 0.15 respectively. For each crop there was a single relationship between yield and phosphorus uptake (i.e. internal efficiency) for all phosphorus sources showing that variations in yield response were due solely to differences in phosphorus availability. Sodium bicarbonate extractable phosphorus values for fertilized soils sampled shortly after fertilization were not predictive of yield unless different calibration curves were used for the different phosphorus fertilizers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01315105
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