Archives-November 2012

Differential Power Analysis (DPA) has been shown to be an effective attack in cryptographic systems capable of revealing secret data by measuring power consumption. Recent DPA resistant circuits / logics incur severe penalties in terms of area and power. This paper proposes the design of a secure logic family for DPA resistant cryptographic devices. Here the power consumption is insensitive to unbalanced load conditions thus adopting a semi-custom design flow without any constraint on the routing of the complementary wires. The proposed logic is based on a novel encoding concept where the information is represented in time domain rather than in the spatial domain as in standard dual-rail logic. In this paper, a logic family exploiting the proposed concept is simulated to show power consumption independent of the processed data and routing capacitances. It also shows an optimistic improvement in the energy consumption balancing and area reduction.

The amino acid composition of the yolk and albumen of the egg of domestic duck was determined on a dry weight basis. The total essential amino acid ranged from (g/100 g crude protein, cp): 40.9-41.3 or from 43.5-47.8 % respectively of the total amino acid. The amino acid scores showed lysine ranged from 1.26 -1.27 (on provisional essential amino acid scoring pattern) and 1.19-1.21 (on suggested requirement of the essential amino acid of a pre-school child). The predicted protein efficiency ratio was 2.33-2.52, the essential amino acid index range was 1.31-1.32 and the calculated isoelectric point range was 4.90-5.53. The Leu/Ile ratio range was 1.80-1.38. The correlation coefficient (rxy) was positive and significant at r = 0.05 for the amino acids, amino acid scores (on suggested requirement of the essential amino acid of a pre-school child) and the isoelectric point in the two samples. Domestic duck yolk and albumen amino acids were compared with yolk and albumen of domestic guinea fowl and domestic chicken eggs.

This Article introduces the basic concepts, terminology, goals and procedures underlying the proper statistical design of experiment. This section describes in detail the process of choosing an experimental design. The choice of design in agricultural field experiments depends on the objectives of the experiment and the number of factors to be investigated.

Objective: The objective is to compare the sugarcane performance under contour -zonary cultivation techniques with the one under traditional cultivation techniques. Method: Sugarcanes of both Qiantang 4 and Qiantang 5 were planted with different techniques. When they reached technical maturity, the samples of their roots, leaves, stems, number of ratoon cane buds etc. were collected, measured and compared to find out the differences of the yield and quality of the sugarcanes cultivated with different techniques. Result: It is found that sugarcanes under the cultivation with contour -zonary techniques had following characters that were fresh root weight increasing by 92.81-117.57%, functional leaf number increasing by 10.11-14.68%, cane stem production increasing by 16.65-17.57%, cane sucrose contents increasing by 4.05-4.07% and ratoon number increasing by 62.81-65.10%. Conclusion: Sugarcanes cultivated with contour -zonary cultivation techniques perform better than the ones cultivated with traditional cultivation techniques in both their yield and their qualities.

Survivability studies are integral part of cancer research and are particularly important in testicular cancer (TC) studies as TC appears to affect young adults most and is the most curable of all cancers leaving a long life ahead for TC survivors. Numerical models were developed correlating several different parameters documented in SEER (Surveillance, Epidemiology and End Results) database to survivability of TC patients and comparing the model predicted results with actual survival times. The study demonstrates the importance of tumor markers AFP, hCG, and LDH in maintaining strong correlations.

Numerous studies on adolescents have explored factors associated with sexual risk-taking behaviors among youth. However, few studies have examined the link between social exclusion of youth in social and sexual matters and sexual risk-taking behaviors associated with HIV/AIDS infection. This study was carried out using cross sectional design among 365 students randomly selected in secondary school in Bondo District, Kenya in order to determine the link between social exclusion and sexual risk-taking behavior associated with HIV/AIDS infection. The study also examined the moderating effect of age, gender and orphanhood on the relationship between social exclusion and sexual risk-taking behaviors. The findings of the study revealed positive correlation between social exclusion and sexual risk-taking behavior associated with HIV/AIDS infection. The study found out that age, gender and orphanhood moderates the relationship between social exclusion and sexual risk-taking behavior. Conclusion drawn from the study was that an increase in exclusion of youth on basis of age, gender and orphanhood could hamper efforts to slow down the spread of HIV infection in successive generations. Current best practice emphasizes the need for multilevel inclusion of youth in the family, schools, church and societal decision making processes in social and sexual matters that affect them.

The 21st century is griped with the challenge of effective management for the survival of any business organization. Managers and management scholars are left with the responsibility of exploring and adopting the best management approach in other to keep their organization in business. This paper is focused on management approach for effective management in the 21st century. The paper specifically weighed the four major management theories which include the scientific theories, Human Relations theory, the modern theory and the eclectic theory and, finally made Recommendation/ conclusion for the 21st century managers.

Duloxetine, a medication with effects on both serotonin and noradrenaline transporter molecules, has recently been approved for the treatment of generalized anxiety disorder. Thus, the aim of the present study was to synthesis and formulates enteric coated pellets for delayed release and to characterise the physico-chemical property and dissolution. Duloxetin was prepared by photochemical reaction of n-bromo succinamide in carbon tetra chloride in the presence of catalytic amount of benzoyl peroxide. The prepared Duloxetine hydrochloride powder was then blended with mannitol and disodium hydrogen phosphate and sieved through 250 micron screen mesh to prepare dusting powder. It is then formulated as pellets which were seal coated by HPMC 5 cps. Further this seal coated pellets were enteric coated by using Eudragit L 30 D 55 (ammonio methacrylate copolymer dispersion), talc, triethyl citrate, titanium dioxide and purified water with the use of silversten stirrer (UK). The prepared formulations were characterized by scanning electron microscopy, differential scanning calorimeter, X-ray diffraction and Fourier transform infrared spectroscopy. Dissolution profile of the enteric coated pellets was compared with its recrystallized sample and pure sample. The samples were stored in stability chamber to investigate their physical stability. In stability test, the release profile of the pellets was almost unchanged as compared with the freshly prepared pellets stored at 40 0C and 75% relative humidity for 90 days. Hence these pellets can be formulated for giving Duloxetine hydrochloride as a delayed released formulation.

Airspora constitutes fungal spores, pollen, bacteria, hyphal fragments, insect’s scales, etc. Some of them are toxic and causing serious health hazards in human being, as well due to their higher concentration in the air creates environmental pollution. Among them fungal forms were taken into consideration to find out the status of various types of allergic and pathogenic spores at various places and their role in causing health hazards to plants and human beings. In vegetables and fruit market, airspora contain mostly fungal spores which are known to cause the diseases to vegetables and fruits and various allergies to human beings. The present aerobiological investigation was carried out by using Rotorod air Sampler for the period of one year. Total 17 fungal forms were recorded during the study period. Aspergillus (12.2%), Rhizopus (8.3%), Exosporium (7.7%), Sporidesmium (6.8%) and Curvularia (5.7%) were recorded as the predominant forms whereas Alternaria, Bispora, Heterosporium, etc. were found with comparatively less concentration. It was observed the concentration of the spores in the air varies from season to season probably due to variation in meteorological parameters. The dominance of name of the fungi in the air of vegetables and fruit market indicates their possible role in the damage of vegetables and fruits. The vegetables and fruit market environment had higher population of Aspergillus and Penicillium indicating possible source of contamination. Fungal spores are one of the chief components of aeromycoflora known to induce various allergic disorders in human beings.

Two widely used formalisms based on the cadmium ratio concept (with its associated problems) of the single comparator (k0-NAA standardization) method are used for the multi – elemental analysis at Ghana Research Reactor – 1 (GHARR – 1) facility. This paper examines suitability of GHARR – 1 for reactor neutron activation analysis after the re – configuration of the core by monitoring the stability of the flux parameters f and ? over the course of nine months and the feasibility of using k0 – NAA standardization method based on the Maxwellian neutron distribution concept at the facility for routine analysis. The concepts were validated by analyzing two reference materials. The concentrations of most of the elements were found to be within 10% of the certified values.