Synthesis of 4-aryl-5-hepta-O-acetyl-β-D-lactosylimino-3-tetra-O-benzoyl-β-D glucopyranosylimino-1,2,4-dithiazolidine hydrochlorides

829-8314-Aryl-5-hepta-O-acetyl-β-D-lactosylimino-3-tetra-O-benzoyl-β-D-glucopyranosylimino-1,2,4-dithiazolidine hydrochlorides have been prepared by the interaction of 1-tetra-O-benzoyl-β-D-glucopyranosyl-3-aryl thiocarbamides and N-hepta-O-acetyl-β-D-lactosyl-S-chloro isothiocarbamoyl chloride. The structure of these new 3-N-glcosylated-5-N-lactosylated-1,2,4-dithiazolidine hydro­chlorides have been established on the basis of usual chemical transformations and IR, 1H NMR and mass spectral studies

Enhanced photovoltaic performance of a dye sensitized solar cell with Cu/N Co-doped TiO2 nanoparticles

Pure and Copper/Nitrogen (Cu/N)-codoped TiO2 photoanodes with various Cu concentrations are prepared via sol-gel route for the photoanode application in dye-sensitized solar cells (DSSCs). All the prepared samples are characterized by X-Ray Diffraction (XRD), X-Ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscope (SEM), Transmission Electron Microscopy (TEM), UV-Vis spectroscopy (UV-VIS) and Electrochemical Impedance Spectroscopy (EIS). Addition of suitable amount of Cu and N content in TiO2 can alter its optical and electrical properties by extending absorption in the visible region and band gap reduction. The results show that some of the Ti sites are replaced by Cu atoms while O sites are occupied by N atoms. Upon adequate addition of Cu/N could lead to smaller particle size, higher specific surface area, increased dye adsorption and retarded charge carrier recombination. A significant improvement in the power conversion efficiency is observed in case of optimized 0.3 mol% Cu/N-doped TiO2 nanoparticles (NPs) based DSSC. This optimized 0.3 mol% Cu/N-doped photoanode accomplished a best power conversion efficiency of 11.70% with a short circuit current density of 23.41 mA cm(-2) which is 41% higher than that of the pure TiO2 photoanode based DSSC (6.82%)

Clinico-therapeutic management of Dimethoate-30% (Rogor) poisoning in a non-descript bullock

A non-descript bullock suffering from dimethoate-30%(Rogor) poisoning was treated using Inj. Dexamethasone, Inj. 2-PAM, Inj. B-complex and Sodium Bicarbonate alongwith fluid therapy, the bullock responded well to the therapy and survived. [Veterinary World 2008; 1(6.000): 178-179

Catalyst and solvent free one-pot microwave synthesis of fused pyrimidine diones and triones

629-636<span style="font-size:11.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-bidi-font-family:="" mangal;mso-ansi-language:en-gb;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-GB">One pot three components synthesis of fused pyrimidine diones and triones have been achieved by reaction of barbituric acids, aldehydes and monosubstitued carbamides or thiocarbamides under microwave irradiation. The mild reaction conditions, easy product work-up, and good to high yields are some of the highlight of the present protocol. The method is applicable to the synthesis of variously substituted fused pyrimidine diones and thiones. This method offers substantial improvements in the reaction rates and yields, and also avoids the use of hazardous solvent and catalyst apart from applicability to the wide variety of substrates.</span

Comparison of CMOS

Abstract — The benefits of using good current sources in analog signal conditioning circuit are well known. The objectives of this paper are to built and compare the CMOS current mirror sources fit for the desired applications. The current sources are developed by using current mirror circuits fed from identical input current source. A straightforward approach to design and compare the current sources based on four parameters is presented here. The current mirror, Cascode current mirror and Wilson current mirror sources are compared with output resistance, systematic gain error, input voltage and minimum output voltage. The simulation results are included in the paper and validated with the derived values. The proposed current sources circuits have designed in 0.25µm CMOS technology with the help of EDA tool Tanner V14.1. Keywords- Current mirror; cascode current mirror; output resistance; Wilson current mirror; aspect ratio