Positron Impact Excitation Cross Section of Helium

We have computed excitation cross section (ECS) of Helium (21S - 21P and 23S - 23P) by positron impact using coupled channel optical (CCO) method. Here we have compared the calculated ECS results for singlet-singlet excitation with other available theoretical data. The results are found in excellent agreement with convergent close coupling (CCC) and distorted wave approximation (DWA) calculations. For triplet-triplet transition, we have compared our results with available experimental results also. However some discrepancies suggested that more theoretical work is required in future

Excitation Cross Section of Argon by Positon Impact at 14.0eV

We have computed excitation cross section (ECS) of Argon by positron impact using time dependent close coupling method at low energy range i.e. 14.0eV. High quality Hartree - Fock Slater orbitals are used to model the target wave function. We have computed the excitation results for noble gases (Ne, Ar, Kr and Xe), but here we are presenting only for Argon atom. Full orthogonalization significantly improves agreement with experimental data for the noble gas series. We have compared ECS results with other available theoretical data as well as experimental measurements. Our present results are found in excellent agreement with other calculations. However some discrepancies suggested that more and more theoretical as well as experimental work is required in future

PRODUCTION OF AMYLASE FROM CUCUMIS MELO USING ASPERGILLUS NIGER BY LIQUID FERMENTATION

Submerged fermentation was carried out using muskmelon shell as a substrate for the production of amylase using Aspergillus niger. It was observed that the activity started to peak at 60 hrs as 102.6 µg/ml/min, reached maximum at 118.56µg/ml/min at the 84th hrs and then went on decreasing at 108 hrs to111.72 µg/ml/min, respectively. The results show that the amylase activity was decreasing after the 3rd day of incubation in the same optimal conditions. The optimum temperature maintained for amylase activity, was 30°C at pH 8.The process parameters influencing the production of α-amylase were optimized. Key words: Cucumis melo, Aspergillus niger, α-Amylase, Submerged Fermentatio

Ultra Structural and Analytical Studies of Biodiesel Producing Microalgae (Chlorella vulgaris and Senedesmis sp.) Collected from Tamil Nadu, India

Microalgae are an economical choice for biofuel production, because of its availability and low cost. Our studies prove that biodiesel can be produced from Freshwater (Temple tanks, Forest lagoons, Inland lakes, Rock ponds) microalgae (Chlorella vulgaris, Senedesmis sp). The Nile Red fluorescence method described in our present study provides a rapid, easily manipulated and reliable method for in vivo quantification of neutral lipids in various microalgal taxa, particularly those belonging to the Chlorophyceae, that were previously found difficult to stain with Nile Red method. The optimum drying period of microalgae biomass is determined to be 120 min. The percentage of lipid content during n-Hexane soaking period (Chlorella vulgaris) is 49% during 210min. Extraction of lipid fragments through solvent extraction method from biomass and the fractions were analysed for biodiesel under FT-IR and GC-MS

Phenolics Quantification in some Genotypes of Capsicum annuum L

Total phenolic contents of fruits at three ripening stages (green, intermediate and red) from nine genotypes of Capsicum annuum L. were analyzed. Among the genotypes C. annuum var. Paprika (C.a.2) had highest amount of phenolic contents i.e., 188.0±0.44, 220.0±0.52 and 266.0±0.30mg/100gFW from green, intermediate and red ripening respectively. The study revealed that high content of phenolics were found in fruits at red ripening. The variability of phenolic contents in the genotypes suggests that these selected genotypes may be use full as parents in hybridization programs to produce fruits with good nutritional values.Key words: Chili pepper, Gallic acid, Phenolics, Ripening O. Aniel Kumar et al. Phenolics Quantification in some Genotypes of Capsicum annuum L.. J Phytol 2/6 (2010) 87-90

Optimal Design of Wastewater Treatment Plant Using Adaptive Simulated Annealing

This paper deals with the application of Adaptive Simulated Annealing (ASA) for the optimal design of the wastewater treatment plant. The plant consists of a trickling filter, an activated sludge aeration vessel and a secondary clarifier.In this work a successful attempt has been made to use the ASA for optimal design of wastewater treatment plant. ASA based optimal design values have been compared with conventional optimization approaches and has been found to yield the lowest total construction cost of wastewater treatment plant. From this work, it has been found that artificial intelligence based optimization techniques such as adaptive simulated annealing is found to be suitable for the optimal design of wastewater treatment plant. @JASE

Antibacterial activity of silver nanoparticles synthesized by using whole plant extracts of Clitoria ternatea

This study highlights the synthesis of silver nanoparticles using whole plant extracts of Clitoria ternatea. Antibacterial activity of silver nanoparticles was assessed by using disc diffusion method against Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Klebsiella pneumoniae, since Bacillus species and S. aureus strains may cause diarrhoea and an enteropathogenic form of E. coli, and Klebsiella species may cause food poising. The results of this study clearly indicate that silver nanoparticles synthesized from plant extracts of Clitoria ternatea has many pharmaceutical applications for the control of deadly pathogens

Grain Quality Characters of Some Promising Lowland Rice Cultures

Rice is the most important staple food in India. It supplies not only the majority of calories but also nutrients including protein in the average Indian diet. Ordinary rice requires 20-30 minutes to cook. It. has been shown that diet rich in carbohydrates can be useful in weight control. Grain shape and size are important traits in determining the market value. The consumers' preference depends on their socio-economic status, besides physical dimension. Grain quality is a prime fac tor that determines consumer preference and marketability of rice. In view of increasing demand on quality rice, it is essential to breed varieties possessing superior grain characteristics. Lowland rice is mostly located in the eastern region comprising of Assam, WB., Bihar, Orissa, Eastern M.P. and eastern UP. Generally, high yielding varieties are not popular in Kharif and traditional varieties occupy almost 70% of the area. The traditional varieties are susceptible to stem borers, lodge prematurely and give low yieldFifteen lowland mltum with higher y ield potential in the first year and eight in the second year were tested for superior grain quality. Assesment of the quality parameters revealed that short bold cultures yielded 5 5 to 66% head rice, whereas the long bold and long slender yielded 55 Jo 63% and 45 Jo 61%. Ctt!tum like CRK 4-25, CRK 4-22 and CR 835-24, becmm of long slender character associated with requisite cooking quality ,·haracteristia, mqy be utilized for conmmption purpose and popular check variery viZ:, Gayatri and Manasarovar (short bold) along with CRK 2-26, CRK 1-17, CRK 13-11, CRK 17-11-5, CRK 21-1, CRK 1006-5 a11dCRK 24-17 may be mitable for internal trade and comrmrption. These gmotypes have good qualiry attributes and hence may be rued as donors for breeding van.etiu with high yield potential and qality for lowland areasNot Availabl

Antimicrobial and DPPH Free Radical- Scavenging Activities of the Ethanol Extract of Propolis Collected from India

Propolis is a natural product derived from plant resins collected by honey bees. In the present study, ethanolic extract of Propolis (EEP) collected from South India were tested for their antibacterial, antifungal and antioxidative activities. Propolis from Apis mellifera and Trigona sp were collected and compared with the commercial Propolis. EEP from Apis mellifera and commercial Propolis showed higher activity against Staphylococcus aureus and Trigona sp EEP showed higher activity against Candida albicans than commercial. In addition, the total flavanoid and total polyphenol content were analyzed. The chemical compositions of Propolis were identified from Gas Chromatography and Mass Spectrum (GC-MS). The compound 1,4 Di-O-Acetyl-2,3,5-tri-O-Methylribitol (C12H22O7) was found to be first time in the propolis and the rest of the identified compounds were already reported. The results confirms the high DPPH free radical scavenging activity of Indian propolis. Thus Indian propolis, being a rich source of natural antioxidants, may be used in the prevention of various free radicals related diseases

Not Available

Not AvailableNot AvailableNot Availabl