نتایج جستجو برای: bacl2
تعداد نتایج: 255 فیلتر نتایج به سال:
Influence of Chemical Additives on Modification of the Structure of Hydrosilicates of Cement Systems
The article provides information on the study of influence aprotic acid (AA) additives electrophysical properties calcium hydrosilicates (HSCs), which allow us to better understand their physical and chemical nature, type bond, effect impurities structure. measurements showed that specific electrical conductivity HSCs is within 10−7-10−8 Ohms−1 ⋅ cm−1. This suggests are more "bad" semiconductor...
طیف سنجی جرمی یکی از حساس ترین روش ها در آنالیز مواد است. در این روش مولکول ها و اتم های خنثی یونیزه می شوند. سپس در میدان الکتریکی، مغناطیسی و یا الکترومغناطیسی جداسازی و توسط آشکارساز، شناسایی می شوند. در این پایان نامه از طیف سنج جرمی زمان پرواز برای بررسی طیف جرمی نمک های کلرید فلزات قلیایی خاکی استفاده شده است. طیف سنج جرمی زمان پرواز یکی از ساده ترین، پرکاربردترین و پرسرعت ترین دستگاه های...
Results Diclofenac (30 μM) decreased the amplitude of rapid (IKr) and slow (IKs) delayed rectifier and L-type calcium currents (ICa) without influencing transient outward (Ito) and inward rectifier (IK1) potassium currents. The action potential was slightly lengthened in ventricular muscle but shortened in Purkinje fibres by diclofenac (20 μM). The maximum upstroke velocity (Vmax) was decreased...
We demonstrate the use of X-ray reflectivity to probe the electron density profile normal to the interface between two polar liquids. Measurements of the interfacial width at the neat nitrobenzene/water and the neat water/2-heptanone interfaces are presented. These widths are consistent with predictions from capillary wave theory that describe thermal interfacial fluctuations determined by the ...
Urinary and faecal excretion of radioactivity after either an intravenous or oral (1 mg/kg) dose of 35S-labelled Tobias acid (2-naphthylamino, 1-sulphonic acid), a dyestuff intermediate structurally similar to the powerful carcinogen 2-naphthylamine, was studied in rats. The Tobias acid was eliminated from the body within 24 hours of administration, almost exclusively through the urine. TLC-chr...
The current increase in the vast amount of marine crustacean shell waste produced by the fish processing industries has led to the need to find new methods for its disposal. Hence, the present study was carried out via marine shell wastes as substrate for protease production. The maximum production (4000.65 U/ml) from Bacillus sp. APCMST-RS3 was noticed in 3:1% shrimp and oyster shell powder (S...
The characteristics of 86Rb+ fluxes through conductive channels in basolateral-membrane vesicles isolated from pars recta of rabbit kidney proximal tubule were investigated. In RbCl-, KCl- and NaCl-loaded vesicles a transient and almost equal accumulation of 86Rb+ was observed. The uptakes of 86Rb+ were inhibited to the same extent by 10 mM-BaCl2 in all loadings. The accumulation was driven by ...
This study investigated the larvicidal activity on Culex quinquefasciatus of lectin purified from fresh fruiting bodies woodland mushroom, Agaricus semotus. A. semotus (ASL) was via ion-exchange chromatography DEAE-cellulose A-25 and size exclusion Sephadex G-100 matrix. Molecular weight (16.6 kDa) estimated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The effects tem...
Zataria multiflora Boiss. is used in Iranian traditional medicine to treat gastrointestinal disorders and menrrhalgia. The inhibitory effect of this herb on rat ileum contractions is also reported. The aim of this study was to investigate the effect of Zataria multiflora Boiss. hydroalcoholic leaf extract (ZHLE) on isolated rat uterus in presence of some known uterus stimulants. Pieces of virgi...
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