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  • 1985-1989  (19)
  • 1950-1954
  • 1987  (19)
  • 1
    Electronic Resource
    Electronic Resource
    Homogeneous and heterogeneous catalytic asymmetric reactions. 1. Asymmetric hydrogenation of the prochiral carbon-carbon double bond on a modified Raney nickel catalyst (1987)
    s.l. : American Chemical Society
    The @journal of organic chemistry 52 (1987), S. 1139-1141 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00382a031
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Synthetic analogs of tetrahydrobiopterin with cofactor activity for aromatic amino acid hydroxylases (1987)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 30 (1987), S. 40-45 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00384a007
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Photoresponse in amorphous semiconductors as dark conductivity varies (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 3380-3387 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The variations in conductivity, under illumination of amorphous semiconductors, is examined as a function of the dark Fermi level (EF) using a simple, generally accurate approach which eliminates the need for a complete numerical solution of equations covering generation, recombination, and trapping. The enhanced photoconduction on doping is readily quantified along with the reduced photosensitivity (total to dark conductivity ratio). Various models can be more readily assessed. Predictions are examined in detail for the often used exponential gap state model. The associated Rose model result for the intensity dependence is seen to be an asymptotic limit which becomes less applicable as dark conductivity increases. Temperature dependence is also examined. Emphasis is on doping, but contrasts are also drawn between the effects of a homogeneous and inhomogeneous shift in dark activation energy. The reduction in the exponent γ for the intensity dependence is far more pronounced when external fields modify the dark conductivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339300
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Mechanism and Control of Homologous Recombination in Escherichia Coli (1987)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 21 (1987), S. 179-201 
    Details
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ge.21.120187.001143
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Histamine levels and cardiovascular responses during splenectomy and splenorenal shunt formation in a patient with systemic mastocytosis (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 42 (1987), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Systemic mastocytosis is a rare disorder characterised by the infiltration of many tissues by abnormal numbers of mast cells. Life-threatening episodes of bronchospasm and hypotension are common in response to a variety of triggers which cause mast cell degranulation. We present the case history of a patient with severe mast cell disease who successfully underwent splenectomy and portocaval anastomosis. Peri-operative therapy was directed towards mast cell stabilisation, and histamine-releasing drugs were avoided. Cardiovascular data, together with blood histamine levels and thrombin times, indicated that mast cell degranulation did not occur. A review of the current literature concerning mast cell disease as it relates to anaesthesia is presented and suggestions for the safe management of such cases are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1987.tb04112.x
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  • 6
    Electronic Resource
    Electronic Resource
    Arterial oxygen desaturation during postoperative transportation: the influence of operation site (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 42 (1987), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Arterial oxygen saturation in 132 patients was measured using a Biox IV oximeter with an ear probe, during transfer from theatre to recovery room following a variety of surgical procedures. Oxygen saturation decreased to 85% or less in 21.9% of patients and to 90% or less in 61.4%. No predictive factors were identified. It is recommended that supplementary oxygen be given to all patients in the immediate postoperative period, including the period of transit to the recovery room.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1987.tb05282.x
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  • 7
    Electronic Resource
    Electronic Resource
    Immunoglobulin-producing cells in human odontogenic cysts (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 16 (1987), S. 0 
    Details
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Immunohistochemical staining of immunoglobulin-containing plasma cells was performed on odontogenic keratocysts, dental (periapical) and dentigerous cysts. IgG-containing plasma cells were the predominant species in all cyst types examined, with a much lower percentage of IgA- and few IgM-containing plasma cells. Statistically significant differences in the percentage contributions of IgG and IgA plasma cells were observed between the keratocyst and both the dental (periapical) and dentigerous cysts and for IgM between the keratocyst and dental (periapical) cyst. Intense extracellular staining was observed for IgG in all cyst types.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0714.1987.tb00675.x
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  • 8
    Electronic Resource
    Electronic Resource
    The influence of ration size and feeding frequency on ammonia excretion by juvenile Atlantic cod, Gadus morhua L. (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 31 (1987), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Small groups of juvenile Atlantic cod, Gadus morhua L., were kept at 14°C in through-flow tanks and were fed known quantities of a compounded diet of natural food. The cod were fed single and multiple meals with ration size in the range 0.5 to 4.1% of total wet fish body weight. Ammonia production in each feeding experiment was monitored continuously.For single-meal experiments, significant relationships were derived between ration size and (a) total ammonia excreted, (b) total exogenous ammonia excreted above endogenous excretion levels, (c) duration of the elevated phase of ammonia excretion, (d) maximum rate of ammonia excretion, and (e) time delay after feeding to reach maximum rate of ammonia excretion. Relationships between nitrogen loss as ammonia and nitrogen intake were examined and estimates of endogenous excretion rate and maintenance ration made.Repetitive feeding resulted in cyclical variation in ammonia excretion. At the lowest ration size, ammonia excretion rates had nearly returned to the pre-feeding level within 24 h. At higher feeding levels, the effect of each successive meal tended to be cumulative, resulting in increasingly higher ammonia excretion rates which only stabilized towards the end of the experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1987.tb05257.x
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  • 9
    Electronic Resource
    Electronic Resource
    Consumer Ratings of Restructured Beef Steaks Manufactured to Contain Different Residual Contents of Connective Tissue (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 52 (1987), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Restructured beef steaks were evaluated by consumers (n = 90 households) in Houston, TX. Consumers were selected to assure that demographic representation—age, ethnic background, income, education—was accomplished. Restructured beef steaks were manufactured from 27 beef shoulder clods (nine per treatment) that were subjected to different degrees of connective tissue removal—no trim (NT), intermediate trim (IT) and extensive trim (ET). Consumers rated ET steaks highest, IT steaks intermediate, and NT steaks lowest for overall desirability with significant differences found among the treatments. Consumers perceived this product as being intermediate in monetary value when compared to ground beef and T-bone steak.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1987.tb05855.x
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  • 10
    Electronic Resource
    Electronic Resource
    Difficulties encountered in the search for the etiologic agents of destructive periodontal diseases (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of clinical periodontology 14 (1987), S. 0 
    Details
    ISSN: 1600-051X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract The present paper outlines some of the difficulties encountered in the search for the etiologic agents of destructive periodontal diseases. These include technical problems such as acquiring an appropriate microbial sample, as well as difficulties in the dispersion, cultivation and identification of isolates in that sample. Many of these difficulties are currently being successfully addressed. A second set of problems is more conceptual in nature. These include difficulties in distinguishing between periodontal diseases and determining the state of activity of periodontal lesions. In addition, complexes of organisms and/or sequences of species may be involved in the progress of lesions. A further problem is encountered in attempting to distinguish overgrowths of opportunistic species from increases in proportions of true pathogens. Finally, it appears likely that different infections occur at the same time in a single oral cavity. The technical and conceptual difficulties eventually filter down to the data analytical step and present numerous problems to the analyst. With all of these difficulties in mind it is not surprising that the etiologic agents of destructive periodontal diseases are not clearly defined. However, improvement in technological assessments of the microbiota and clinical evaluation of the disease should permit reasoned approaches to be taken. The delineation of the etiologic agents of destructive periodontal diseases will be, of necessity, a multistage iterative process. Etiologic agents will be suggested by predominant cultivable studies and hypotheses concerning subsets of these agents tested using more specific procedures such as selective media, immunofluorescent techniques or DNA probes. Etiologic agents will be verified or discarded by such procedures. When new lesions are found without recognized pathogens, the process will iterate back to the predominant cultivable methodology again.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-051X.1987.tb01520.x
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