Proton Chemical Shifts of Solute Molecules in Binary Solvent Mixtures: Reversal of the Roles of Solute & Perturbing Solvent

746-74

Carbonyl Stretch Intensity of Benzophenone in Binary Solvent Mixtures of Chloroform, Methylene Chloride & Trichloroethylene with Cyclohexane

743-74

Uncertainties in regional climate change projections: Part I: Choice of global climate models for regional downscaling

One of the main goals of the ClimaRice II project is to reduce uncertainties in future monsoon projections. The IPRC regional climate model (IPRC_RegCM) has been used to simulate the current and future climates over both Cauvery and Krishna basins. This technical brief summarizes the issues in setting up of a regional climate model such as spin-up time, required climate parameters, selection of model domain and resolution and issues related to lateral boundary conditions. The brief also summarizes the comparison of uncertainties involved in the global climate model and how this will influence the southwest and northeast monsoon seasons over the Indian region. The next brief will investigate the uncertainties in the IPRC_RegCM simulations, particularly over the Cauvery and Krishna basins

Chemical shifts due to long range dispersion interactions

Dispersion chemical shifts, &#963;<SUB>w</SUB>, for a variety of solute-solvent systems have been obtained by three different methods. The value of &#963;<SUB>w</SUB> for a given system differs with the method employed for evaluating the characteristic frequency

Metal concentration in mussel <i>Perna viridis</i> (Bivalvia/Anisomyaria) and oyster <i>Crassostrea madrasensis</i> (Bivalvia/Anisomyaria) from some parts in southeast coast of India

206-210The concept of mussel watch has been applied to monitor the levels of heavy metals in the southeast coast of India covering a distance of 250 km. The data reflected a definite seasonal variation with an increased metal load during the monsoon period and decreased level during the summer period. The order of metal accumulation was found to be Zn>Cu>Pb>Cd>Hg. Salinity of the media was found to play an important role in the accumulation of metals in tissue. A linear relationship was found between the metal level in the tissues and that in the dissolved fractions. Oyster showed maximum concentration factor (CF) when compared to mussels. Both animals showed high adsorption and absorption capacity for heavy metals as revealed by the CF, suggesting that they can be used as indicator for water quality and heavy metal pollution on a long-term basis

Electronic and infrared spectral band shifts in binary solvent mixtures

A systematic study on the electronic and infrared spectral band shifts of a variety of solutes in binary solvent mixtures has been carried out. Similar to the behaviour of proton shifts and spectral intensities of solutes in binary solvent mixtures the band shifts are also found to obey the relationship &#916;&#957;=K&#916;&#957;&#176;Cp/(1+KCp) where &#916;&#957; is the band shift of a solute in binary solvent mixture containing Cp moles of perturbing solvent with respect to its band position in an inert solvent, K and &#916;&#957;&#176; are constants for the system under consideration. An attempt has been made to give an explanation for the relationship

Kinetics of Oxidation of Some Substituted 4-Oxanones by Vanadium(V)

122-12

Pseudocapacitive Characteristics of Mg Doped ZnO Nanospheres Prepared by Coprecipitation

A n-type semiconductor ZnO has high transmittance features, excellent chemical stability and electrical properties. It is also commonly used in a range of fields, such as gas sensors, photocatalysts, optoelectronics, and solar photocell. Magnesium-doped zinc oxide (Mg-ZnO) nano powders were effectively produced using a basic chemical precipitation process at 45°C. Calcined Mg-ZnO nano powders have been characterized by FTIR, XrD, SEM-EDX and Pl studies. XRD measurements from Mg-ZnO revealed development of a crystalline structure with an average particle size of 85 nm and SEM analysis confirmed the spherical morphology. Electrochemical property of produced Mg-ZnO nanoparticles was analyzed and the specific capacitance value of 729 F g-1 at 0.5 A g-1 current density was recorded and retained a specific capacitance ~100 percent at 2 A g-1 current density