نتایج جستجو برای: concentration ratio
تعداد نتایج: 849884 فیلتر نتایج به سال:
Rabbits were exposed to elemental mercury (Hg degrees) vapor, methyl mercury (MeHg) and HgCl2 respectively, and the relationship of mercury concentration in brain to that in blood or cerebrospinal fluid (CSF) was investigated after the termination of exposure. At one day post-exposure, the ratio of mercury concentration in brain (microgram Hg/g) to that in blood (microgram Hg/g) was approximate...
objective(s): pei based nanoparticle (np) due to dual capabilities of proton sponge and dna binding is known as powerful tool for nucleic acid delivery to cells. however, serious cytotoxicity and complicated conditions, which govern nps properties and its interactions with cells practically, hindered achievement to high transfection efficiency. here, we have tried to optimize the properties of ...
The disinfective power of chlorine, bromine, and mixtures of chlorine and bromine at different ratios was compared. The influence of pH was also studied. The experiments were carried out in "purified" water and in natural waters of swimming pools, river, and sea. In the presence of high amounts of nitrogenous growth-promoting material (at neutral pH), bromine was more effective than chlorine; i...
OBJECTIVE To examine the risk factors and precipitating circumstances associated with firearm suicide. METHODS Data from the restricted National Violent Death Reporting System (2003-6) for 25 491 male and female suicide decedents aged 18 and older were analysed by multiple logistic regression to estimate the relative odds of firearm use with 95% CIs. RESULTS Firearms were often used in male...
In this paper we describe block algorithms for the reduction of a real symmetric matrix to tridiagonal form and for the reduction of a general real matrix to either bidiagonal or Hessenberg form using Householder transformations. The approach is to aggregate the transformations and to apply them in a blocked fashion, thus achieving algorithms that are rich in matrix-matrix operations. These red...
We examined the influence of the cytochrome P450 3A5 (CYP3A5) genes in both donors and recipients on the concentration-dosage ratio (C/D) of tacrolimus in Chinese liver transplant patients. Fifty-one adult liver transplant patients who received tacrolimus were included in this study. The CYP3A5 polymorphism in donors and recipients was determined at the time of transplantation, and tacrolimus-b...
A technique based on planar laser-induced fluorescence of 3-pentanone, for measurements of absolute concentration, temperature and fuel/air equivalence ratios in turbulent, high-pressure combustion systems such as an internal combustion engine is presented. Quasi-simultaneous excitation with 248 nm and 308 nm of 3-pentanone that is used as a fluorescence tracer doped to iso-octane, yields pairs...
OBJECTIVE The accuracy of aldosterone/direct renin concentration ratio (ADRR) as a screening test in patients with primary aldosteronism (PA) varies widely across the studies. Therefore, we conducted a meta-analysis to assess the accuracy of ADRR. METHODS A literature search was performed in PubMed, Embase, and the Cochrane library published between April 1971-February 2016. Studies focusing ...
Enhanced serum IgA concentrations are common in alcoholic liver cirrhosis, but functional differences between IgA subclasses and their relation with interleukin-6 (IL-6) have not been described. Distinct immunoregulatory mechanisms may exist that selectively affect one subclass. This possibility prompted us to investigate the distribution of IgA1 and IgA2 subclasses in the serum of 25 heavy alc...
BACKGROUND During cardiopulmonary bypass (CPB), several factors affect drug disposition and action. This topic has not been studied extensively during normothermic CPB. In this study, we related propofol dose to plasma propofol concentration and burst suppression of the EEG during normothermic bypass. METHODS After institutional approval and informed consent, 45 patients having cardiac surger...
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