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991.
Ethanol (ca. 1 g/kg body weight) was given alone or together with glucose or lipid (mixed triglycerides) perorally to young, fasting subjects. The changes with time (0–6 hr) of lipoprotein lipase activity (LLA) in adipose tissue, plasma glycerol, triglyceride, insulin, blood glucose, and alcohol concentrations were followed. A maximal mean blood alcohol concentration of 0.09% (w/v) was obtained 1 hr after ingestion with no apparent intoxicating effects. Ethanol intake prevented the previously observed [Nilsson-Ehle, P., S. Carlström and P. Belfrage,Scand. J. Clin. Lab. Invest. 35∶373 (1975)] glucose-induced rapid elevation of adipose tissue LLA but had small effects on this enzymatic activity when given alone or together with lipid. Confirming results by others, ethanol intake decreased plasma glycerol concentration and increased plasma triglycerides, especially after intake of lipid. It is suggested that ethanol intake interferes with the normal carbohydrate-induced elevation of adipose tissue LLA after a mixed meal, thereby decreasing the removal capacity for circulating dietary lipid and causing enhanced and prolonged alimentary hyperlipemia. 相似文献
992.
A new evaluation of the Fe-W system has been made using a magnetic multi-sublattice subregular model. A set of parameter values describing the Gibbs energy of each individual phase is given. The treatment of the μ phase is based upon a three-sub-lattice model. 相似文献
993.
Per Vestergaard 《Lipids》1980,15(9):710-718
A survey is given of current trends in the assay of urinary hormonal steroids. Both group assay methodology and assays for
single urinary steroids are reviewed as are semi-automated and automated procedures and high-resolution and high-capacity
techniques, as applied to the profile analysis of urinary steroid hormones. 相似文献
994.
This paper illustrates a precise method for comparing microcomputer instruction sets for the purpose of language implementation. The standard of comparison is the Concurrent Pascal interpreter for the PDP 11/45 minicomputer. The paper identifies the most frequent virtual instructions and their implementation on the PDP 11/45 computer. It then compares the speed and size of interpreters implemented on various 16-bit microcomputers. It also includes the process switching times of these computers. 相似文献
995.
Per Bengtsson Josef Kubt Carl Klason Douglas H. McQueen 《Polymer Engineering and Science》1993,33(9):573-580
Electrical noise measurements have been used to study electrical conduction in carbon black-filled linear low density polyethylene. Measurements of the resistivity, real part of the relative permittivity, thermal noise, and current noise have been carried out for carbon black contents and temperatures below, near, and above the percolation threshold for electrical conduction. The current noise shows a 1 /fα frequency dependence, with α near unity close to the percolation threshold, but increasing to 1.5 at higher resistivities or temperatures. 相似文献
996.
The emission of volatile organic compounds (VOCs) from five different waterborne paints was measured in small climatic chambers under standard conditions over a one-year period. The aims of the study were to evaluate the time emission profiles and to develop methods for comparison of different paints. The paints were applied to tin-plated steel sheets. VOCs were sampled on Tenax TA and analysed by thermal desorption and gas chromatography. The chamber concentrations increased rapidly during the first few hours and then decreased as the emission rates dropped. A model expression including an exponentially decreasing emission rate of the paint film, the air exchange rate, and a normalization of the film thickness was fitted to the concentration versus time data. The time required to reach a given emission rate was estimated and found suitable for comparison of the emission of VOCs from the paints. It was found that data sampled within three weeks or less may be sufficient to predict the emission of VOCs up to one year. Reduction of long-term emissions may be achieved most efficiently by (1) substituting a more -volatile VOC whose emission is controlled by evaporation for a less volatile VOC characterized by diffusion-controlled emission and (2) reducing the paint film thickness rather than reducing the initial VOC content of the paint. 相似文献
997.
The contents of extractives, starch, crude protein, non-starch polysaccharides and Klason lignin were determined in red clover harvested at six different stages of maturity. Chemical analysis of residues after incubation with rumen liquor in vitro revealed that the degradability of starch was 100% and of crude protein about 80% at all harvest times. The degradability of non-starch polysaccharides decreased from 76 to 51% during maturation and no degradation of Klason lignin was noticed. At all harvest times xylose was the least degraded non-starch polysaccharide residue followed by glucose and rhamnose. During maturation the greatest decrease in in-vitro degradability was noticed for the xylose residues followed by the glucose and the mannose residues. 相似文献
998.
Sornmo Leif Borjesson Per Ola Nygards Mats-Erik Pahlm Olle 《IEEE transactions on bio-medical engineering》1981,(10):713-717
Automated classification of ECG patterns is facilitated by careful selection of waveform features. This paper presents a method for evaluating the properties of features that describe the shape of a QRS complex. By examining the distances in the feature space for a class of nearly similar complexes, shape transitions which are poorly described by the feature under investigation can be readily identified. To obtain a continuous range of waveforms, which is required by the method, a mathematical model is used to simulate the QRS complexes. 相似文献
999.
Per Gustafson 《Metallurgical and Materials Transactions A》1987,18(2):175-188
A new evaluation of the C−Fe−W system has been made using a magnetic two-sublattice subregular model for the interstitial
solution phases, a multi-sublattice model for intermetallic phases and ternary carbides, and an ordinary subregular solution
model for the liquid phase. A set of parameters describing the Gibbs energy of each phase is given. 相似文献
1000.
As part of an ongoing longitudinal study, Matching Familiar Figures Test (MFFT) performance was assessed in 52 girls and 54 boys at age 11 yrs and related California Child Q-Set evaluations obtained both concurrently and at age 14 yrs. Using hierarchical multiple regression, the relative influence of MFFT latency and error scores in the personality domain were compared. Results show that MFFT latency, by itself, accounted for almost no incremental variance in personality evaluations after error had been partialed out. However, the contribution of MFFT error was appreciable and unique—it was significantly related in many ways to behavior, even after its shared variance with latency had been partialed out. Only for girls were significant MFFT latency-by-error interaction effects observed. It is concluded that the results, consistent with those obtained for the same sample of children 7 yrs earlier and consistent also with the results of many other investigators, are incompatible with the original interpretation of the MFFT. The results are also incompatible with the J. Kagan and S. B. Messer (see record 1975-21125-001) conjecture that developmental changes occur in the meaning of MFFT performance. Evidence is offered for a competence, rather than a conceptual tempo, interpretation of the MFFT. The propriety of continuing to use the MFFT as an index of reflection-impulsivity is strongly questioned. (54 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献