a rapid, simple and sensitive high-performance liquid chromatography method was developed for determination of ciprofloxacin in plasma by means of ultraviolet detection. ofloxacin was used as an internal standard and separation carried on a novapak c18 column using a mobile phase of 0.01 m phosphate buffer (ph =2.6): methanol (82: 18 v/v). extraction of drug was performed from plasma by liquid-...

Electrical sensitivity of a boron nitride nanotube (BNNT) was examined toward hydroquinone (C6H4(OH)2) molecule by using density functional theory (DFT) calculations at the B3LYP/6-31G(d) level, and it was found that the adsorption energy (Ead) of hydroquinone on the pristine nanotube is  a bout -7.77kcal/mol. But when nanotubes have been doped with Si and Al atomes, the adsorption energy of hy...

BACKGROUND The mortality rate in patients with severe liver dysfunction secondary to alcoholic liver disease (ALD) who do not respond to the standard treatment is exceptionally high. OBJECTIVES The main aim of this study was to evaluate the usefulness of applying extracorporeal liver support techniques to treat this group of patients. PATIENTS AND METHODS The data from 23 hospital admission...

In polymer chromatography, chain molecules are separated by molecular weight, size, and chemical composition due to adsorption and exclusion in nanoporous substrates. Three regimes of separation are distinguished depending on the adsorption strength and the pore size. In the regime of size exclusion chromatography, the adsorption energy is weak and the separation is entropy-driven with larger m...

the storage capacity of hydrogen on na-decorated born nitride nanotubes (bnnts) is investigated by using density functional theory within quantum espresso and gaussian 09. the results obtained predict that a single na atom tends to occupy above the central region of the hexagonal rings in (5,0) and (3,3) bnnt structures with a binding energy of -2.67 and -4.28 ev/na-atom respectively. when a si...

ABSTRACT Accurate forecasting of space weather requires knowledge the source regions where solar energetic particles (SEP) and eruptive events originate. Recent work has linked several major SEP in 2014, January, to specific features host active region (AR 11944). In particular, plasma composition measurements around footpoints hot, coronal loops core were able explain values later measured sit...

Fulvic acids extracted from a typical rice-production region near Taihu Lake of China were fractionated into three fractions including F4.8, F7.0 and F11.0 (eluted by pH 4.8 buffer, pH 7.0 buffer and pH 11.0 buffer, respectively). Sorption of fulvic acid (FA) fractions onto kaolinite was studied by batch adsorption experiments, and characterizations of kaolinite before and after adsorption were...

To separate the MM and MB creatine kinase (EC 2.7.3.2) isoenzymes in small plasma samples, we developed a simple, rapid ion-exchange batch-adsorption procedure with "DEAE Glycophase" glass beads (Corning). All separative steps are performed in a single test tube and can be completed within a few minutes. Results of measurements of isoenzymes in plasma samples from patients with acute myocardial...

An ordered mesoporous carbon, CMK-3, was synthesized using a mesoporous siliceous material, SBA-15, as the template. CMK-3 was characterized and used for the adsorption of fullerenes C60 and C70. It was found that the adsorption capacity of CMK-3 is 4 times higher than that of activated carbon. The adsorption equilibrium isotherms of C60 and C70 on CMK-3 were studied for both single and binary ...

high-performance liquid chromatography (hplc) methods employing ultraviolet (uv) detector are not sufficiently sensitive to measure the low plasma concentrations following single oral dose of imipramine. therefore, in the present study a simple, rapid and yet sensitive hplc method with uv detection was developed and validated for quantitation of imipramine in human plasma samples. an efficient ...