Quotients
Mostrando 25-36 de 52 artigos, teses e dissertações.
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25. Lifting derivations from quotients of separable C*-algebras
If π: A→B is a surjective morphism between separable C*-algebras, then for each derivation δ of B there is a derivation [unk]δ of A such that π([unk]δ(a)) for each a in A.
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26. Cerebrospinal fluid immunoglobulin quotients, kappa/lambda ratios, and viral antibody titres in neurological disease.
A description has been given of cerebrospinal fluid (CSF) immunoglobulins in 355 patients with demyelinating, infectious, neuropathic, and other neurological disorders. An increase in the CSF IgG/albumin quotient was observed in 19/36 (53%) cases of definite multiple sclerosis (MS), in 13/47 (28%) cases of probable or possible MS, in 6/9 (67%) cases of prove
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27. Detection of Chlamydia trachomatis antigen by enzyme immunoassay: importance of confirmatory testing.
AIM--To determine when a fluorescence assay for Chlamydia trachomatis elementary bodies in the specimen buffer is of most value as a verification test for genital specimens reactive on screening enzyme immunoassay (EIA). METHOD--Genital swabs from high and medium prevalence populations were tested using EIA. Samples with absorbance values greater than the po
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28. Analysis of the subtractive algorithm for greatest common divisors
The sum of all partial quotients in the regular continued fraction expansions of m/n, for 1 ≤ m ≤ n, is shown to be 6π-2n(ln n)2 + O(n log n(log log n)2). This result is applied to the analysis of what is perhaps the oldest non-trivial algorithm for number-theoretic computations.
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29. The extremal quotient in small-area variation analysis.
This article reviews the current small-area variation analysis (SAVA) approach to population-based rates of surgery, and describes a new method for ascertaining variance based on the beta-binomial probability distribution of small-area rates. The critical review of the current SAVA approach focuses (1) on how incidence rates are calculated, and (2) on how th
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30. Relaxation Study of Complex Formation between Monovalent Cations and Cyclic Polyethers
Equilibrium quotients for the 1:1 complexes of dibenzo-30-crown-10 with Na+, K+, Rb+, Cs+, NH4+, and T1+ in methanol solution have been determined spectrophotometrically. The observed selectivity pattern is discussed in terms of the hydration energy of the cations and the cation-ligand binding energy. The rate of complex formation is diffusion-controlled. Re
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31. ω-Theorems for Quotients of Zeta-Functions at Combinations of Points
Theorem A. Let q ≥ O and r ≥ O be integers. Let s = σ + it, let ζ(s) be the Riemann zeta-function, let Go(s) = 1, and [Formula: see text] and let F(s) = Gq(s)/Hr(s). Then as t → ∞ lim sup [unk]F(1 + it)[unk]/(log log t)q+r+1 ≥ (6/π)2)r+1 exp {(q + r + 1)γ}, where γ is Euler's constant.
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32. Relationship between Respiration and CAM-Cycling in Peperomia camptotricha1
Mature leaves of well-watered Peperomia camptotricha show Crassulacean acid metabolism (CAM). Young leaves show CAM-cycling in which CO2 uptake occurs during the day concomitant with a marked diurnal fluctuation of organic acids as in CAM. Evidence is presented suggesting that respiration is the source of CO2 for nocturnal acid synthesis in leaves exhibiting
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33. Fuel selection in rufous hummingbirds: ecological implications of metabolic biochemistry.
Hummingbirds in flight display the highest rates of aerobic metabolism known among vertebrates. Their flight muscles possess sufficient maximal activities of hexokinase and carnitine palmitoyltransferase to allow the exclusive use of either glucose or long-chain fatty acids as metabolic fuels during flight. Respiratory quotients (RQ = VCO2/VO2) indicate that
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34. Disproportionately severe memory deficit in relation to normal intellectual functioning after closed head injury.
The presence of disproportionate memory impairment with relatively preserved intellectual functioning was examined in 87 survivors of moderate or severe closed head injury. Approximately one-fourth of the patients tested at 5 to 15 and/or 16 to 42 months after injury manifested defective memory on both auditory and pictorial measures despite obtaining Wechsl
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35. Amprenavir Inhibitory Quotient and Virological Response in Human Immunodeficiency Virus-Infected Patients on an Amprenavir-Containing Salvage Regimen without or with Ritonavir
The efficacy of an amprenavir (APV)-containing therapy without (group A) or with (group B) ritonavir was assessed in patients with failure of previous protease inhibitor therapy for human immunodeficiency virus (HIV) infection. The mean minimal plasma APV concentrations in groups A and B were 58 and 1,320 ng/ml, respectively, corresponding to APV inhibitory
American Society for Microbiology.
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36. Reproduction-related behaviors of Swiss–Webster female mice living in a cold environment
Based on a molecular neuroendocrine theory about cold environments, thyroid hormone levels, and liganded thyroid hormone receptor interference with estrogen receptor function, experiments were designed to test female mouse reproductive behaviors in the cold. Because natural seasonal temperature declines would usually be associated with decreased photope
The National Academy of Sciences.