Potentiometric determination of the stability constants of ternary complexes of bio-logically important metal ions

630-632The formation constants of the ternary complexes of the type [MLA], where L = adenine or cytosine and A = aspartic acid, glycine or catechol; and M = Cu(II), NI(II), Co(II) or Zn(II) have been determined potentiometrically in aqueous solution at 35°C and μ = 0.10 M KNO3. The ternary complexes involving catechol as secondary ligand are more stable than the binary complexes, whereas ternary system, containing aspartic acid or glycine as secondary ligand are less stable than the binary systems. The comparison of log K values reveals that the mixed ligand complexes containing adenine are more stable than those containing cytosine

Stability Constants of the Binary Complexes of Co(II), Ni(II), Cu(II) & Zn(II) with Thiamine & Ternary Complexes with Thiamine as Primary Ligand & Thymine or Uracil as Secondary Ligand

169-171Stability constants of the 1 : 1 and 1 : 2 metal-thiamine (vitamin B1) complexes and 1: 1 : 1 metal-thiamine-thymine/uracil mixed ligand complexes have been determined in aqueous medium by potentiometric method at 35° ± 0.1°C and μ = 0.10 M (KNO3). The log K values for 1:2 metal-thiamine systems are positive whereas values for 1: 1 : 1 metal-thiamine-thymine or -uracil systems are negative. So the log K values reveal that mixed ligand complexes are less stable than the binary (1:1) complexes

Heat and Mass Transfer of a Peristaltic Electro-osmotic Flow of a Couple Stress Fluid through an Inclined Asymmetric Channel with Effects of Thermal Radiation and Chemical Reaction

The presented article addresses the electro-osmotic peristaltic flow of a couple stress fluid bounded in an inclined asymmetric micro-channel. The viscous dissipation, Joule heating and chemical reaction effects are employed simultaneously in the flow analysis. Heat and mass transfer have been studied under large wavelength and small Reynolds number. The resulting nonlinear systems are solved numerically. The influence of various dominant physical parameters is discussed for velocity, temperature distribution, concentration distribution and the pumping characteristics. Electro kinetic flow of fluids by micro-pumping through micro channels and micro peristaltic transport has accelerated considerable concern in accelerated medical technology and several areas of biomedical engineering. Deeper clarification of the fluid dynamics of such flow requires the continuous need for more delicate mathematical models and numerical simulations, in parallel with laboratory investigations

Field application of anabolic steroids in carp seed production. Pt. 1. Rearing of fry to fingerling stage

Ethylestrenol (17β Hydroxy-17alpha-ethyl-estr-4-en-3-one) and Stanozolal (17β-Hydroxy-17alpha-methyl 1-5 alpha-androstano-(3,2-C)-pyrazole), both synthetic androgenic steroids, were fed via diet at 3ppm to the fry of catla, rohu and silver carp which were reared up to fingerling stage over a period of 167-172 days in earthen ponds. Ethylestrenol enhanced growth in silver carp and rohu but retarded growth in catla. Stanozolal depressed growth in all the 3 species. Length-weight relationship for these fry had been worked out and the relative condition factor in all the cases was very close to or slightly above 1.0

INSIGHT OF METHANOLIC EXTRACT OF VENTILAGO MADERASPATANA LEAVES ON HEPATOPROTECTIVE ACTIVITY UNDER STREPTOZOTOCIN-INDUCED DIABETIC RATS

Objective: The methanolic leaf extract of Ventilago maderaspatana (MEVML, 200 mg/kg body weight [b.w.]) was investigate to hepatoprotective activity under streptozotocin-induced (45 mg/kg b.w.) diabetic (Di) rats. Methods: In the present study, we determined the blood glucose levels, b.w., insulin, creatinine, and bilirubin levels in normal, Di, Di treated with MEVML and positive control rats. Results: The Di rats shown adverse changes in blood glucose levels, b.w., insulin, creatinine, and bilirubin levels when compared to other group rats. Reverse the adverse changes in the above parameters when treated the Di rats with MEVML Conclusion: The MEVML shown anti-diabetic activity and reverse the adverse changes in the above parameters in liver so that the MEVML supported the traditional claim of the hepatoprotective activity under Di condition

Synthesis and photoluminescence studies on catalytically grown Zn1 – xMnxS nanowires

Zn1 – xMnxS alloy nanowires with composition (x = 0.0, 0.1 and 0.3) have been successfully synthesized by a simple thermal evaporation on the silicon substrate coated with a gold film of 2 nm thickness. X-ray powder diffraction measurements reveal that as synthesized products were hexagonal wurtzite structure. The as grown nanowires have been investigated by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy Dispersive Analysis of X-rays (EDAX) and photoluminescence studies. The results reveal that the as grown nanowires consist of Zn, Mn, and S material and diameter ranging from 70 - 150 nm with lengths up to several tens of micrometers. Photoluminescence studies on Zn1 – xMnxS exhibited peaks at 600 and 613 nm for x = 0.1 and 0.3 respectively. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/1053

Revealed Characteristics for a Grain Electronic Market

Agricultural Economic

Simultaneous determination of asenapine and valproic acid in human plasma using LC–MS/MS: Application of the method to support pharmacokinetic study

AbstractCombination of asenapine with valproic acid received regulatory approval for acute treatment of schizophrenia and maniac episodes of bipolar disorders. A simple LC–MS/MS method was developed and validated for simultaneous quantification of asenapine and valproic acid in human plasma. Internal standards were added to 300μL of plasma sample prior to liquid–liquid extraction using methyl tertiary butyl ether (MTBE). Chromatographic separation was achieved on Phenomenex C18 column (50mm×4.6mm, 5μm) in isocratic mode at 40°C. The mobile phase used was 10mM ammonium formate–acetonitrile (5:95, v/v) at a constant flow rate of 0.8mL/min monitored on triple quadrupole mass spectrometer, operating in the multiple reaction monitoring (MRM) mode. The injection volume used for LC–MS/MS analysis was 15μL and the run time was 2.5min. These low run time and small injection volume suggest the high efficiency of the proposed method. The method was validated over the concentration range of 0.1–10.02ng/mL and 10–20,000ng/mL for asenapine and valproic acid respectively. The method recoveries of asenapine (81.33%), valproic acid (81.70%), gliclazide (78.45%) and benzoic acid (79.73) from spiked plasma samples were consistent and reproducible. The application of this method was demonstrated by a pharmacokinetic study in 8 healthy male volunteers with 5mg asenapine and 250mg valproic acid administration

Comparing the personal oral hygiene practices among Government and Private school children of Mahabubnagar, Telangana state - A cross sectional study

Introduction: Oral health is fundamental to general health and well-being. A healthy mouth enables an individual to talk, eat, and socialize without experiencing active disease, discomfort, or embarrassment. Objectives: To assess the knowledge and oral hygiene practices of school children from both Government and Private schools in Mahabubnagar district. Materials and Methods: A total of 150 children aged 11–15 years were randomly selected from six Private and six Government schools. A questionnaire related to their personal and oral hygiene practices was distributed to the school children. Results: The results of this study showed thatmost respondents had a good knowledge of basic hygiene measures and positive attitude towards oral hygiene. The students of both schools exhibited poor oral hygiene practices but were significantly reported more in the Government school than in the Private schools (p<0.005). Majority of the respondents (91.3%) used a commercial toothbrush and toothpaste and half of them (50%) reported brushing twice a day. Two-third of the respondents (75%), had never visited a dental clinic. Conclusion: The results of the present study showed that the knowledge and oral hygiene practices of Government school children were less satisfactory in someaspects when compared to private school children.&nbsp