منابع مشابه
Blockmodels with maximum concentration
There are many circumstances in which binary relations are defined between pairs of objects: in sociology there are social relations between people; in business there are trading relations between firms; in design there are functional dependencies between components. In all of these the clustering of objects into densely interconnected blocks reveals something of the structure of the system. In...
متن کاملUrine concentration in depressive illness.
A total of 132 urine specimens were obtained from 17 depressed patients and 18 controls under conditions of mild water deprivation. Mean values of milliosmoles of solute and millilitres of urine excreted per hour were obtained for each subject. The depressed patients excreted significantly less solute than the control group per unit volume of urine. There was no significant difference between t...
متن کاملTime to Maximum Effect Site Concentration
1. The authors use a polyexponential equation (equation 1) to describe the time course of the plasma concentrations of a drug in lieu of a compartmental interpretation suggested by Sheiner et al. As a consequence, the effect compartment can now contain any amount of a drug and is not limited to being “negligibly small” as postulated by Sheiner et al. 2. Sheiner et al. introduced keo as the firs...
متن کاملTime to maximum effect site concentration.
1. The authors use a polyexponential equation (equation 1) to describe the time course of the plasma concentrations of a drug in lieu of a compartmental interpretation suggested by Sheiner et al. As a consequence, the effect compartment can now contain any amount of a drug and is not limited to being “negligibly small” as postulated by Sheiner et al. 2. Sheiner et al. introduced keo as the firs...
متن کاملDiagnostic Accuracy of Urine Protein/Creatinine Ratio Is Influenced by Urine Concentration
BACKGROUND The usage of urine protein/creatinine ratio to estimate daily urine protein excretion is prevalent, but relatively little attention has been paid to the influence of urine concentration and its impact on test accuracy. We took advantage of 24-hour urine collection to examine both urine protein/creatinine ratio (UPCR) and daily urine protein excretion, with the latter as the reference...
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ژورنال
عنوان ژورنال: BMJ
سال: 1954
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.2.4893.901