Archives-December 

Teaching second language is one of the most abstruse tasks for the teachers to confine the involvement of the students and additionally motivate them so that they may backlog knowledge in vigorous learning milieu. The educational researchers and the educators are probing different techniques and resources which may contribute to the effectual erudition. They are incessantly exploring certain pedagogical and audited strategies so that they can maximize the intellect of the learners. In this era of educational technology “Realia” is one of the important teaching aid that is being used by teachers to motivate their students.

A field experiment was carried out in 2007, 2008 and 2009 at Samaru, Zaria, Nigeria to determine the response of two Chilli pepper (Capsicum frutescens L.) varieties (Bird’s eye and Dantsiga) to five harvesting frequencies (weekly, two weeks, three weeks, four weeks and once at the end of the rains). Factorial combinations of the treatments were replicated three times and laid out in a randomized complete block design. Gross and net plots were 9m2 and 4.5m2 respectively. A spacing of 75cm x 30cm was used. Appropriate agronomic and crop protection practices were adopted to ensure adequate crop performance. The results showed that variety Dantsiga had significantly longer fruits, higher fruit diameter, number of seeds per fruit and dry fruit yield per hectare. There was no difference between the two varieties in the number of fruits per plant. Harvesting every two weeks resulted in significantly higher fruit yield and number of seeds per fruit throughout the three years of study.

The increase in the interest in targeted delivery of drug to the colon via the oral route. The colon is a site where both local and systemic delivery of drugs can take place. Local delivery could, for example, allow topical treatment of inflammatory bowel disease. Treatment could be made more effective if it were possible for drugs to be targeted directly on the colon. Systemic side effects could also be reduced. Colon specific systems might also allow oral administration of peptide and protein drugs, which are normally inactivated in the upper parts of the gastrointestinal tract. Colon-specific systems could also be used in diseases that have diurnal rhythms. To achieve successful colonic delivery continuous efforts have been focused on designing colon-specific delivery systems with improved site specificity and versatile drug release kinetics to accommodate different therapeutic needs. Among the systems developed for colon-specific delivery, four systems were unique in terms of achieving in vivo site specificity, design rationale, and feasibility of the manufacturing process i.e. coating with pH-sensitive polymers, formulation of timed released systems, exploitation of carriers that are degraded specifically by colonic bacteria, and osmotic controlled drug delivery systems. The focus of this review is to provide detailed descriptions of the four systems, and in vitro/in vivo evaluation of colon-specific drug delivery systems.

Segmentation and classification of high resolution satellite imagery is a challenging problem due to the fact that it is no longer meaningful to carry out this task on a pixel-by-pixel basis. The fine spatial resolution implies that each object is an aggregation of a number of pixels in close spatial proximity, and accurate classification requires that this aspect be subtly considered. K-means clustering algorithm is a better method of classifying high resolution satellite imagery. The extracted regions are classified using a minimum distance decision rule. Several regions are selected as training samples for region classification. Each region is compared to the training samples and is assigned to its closest class. The procedure significantly reduces the mixed pixel problem suffered by most pixel based methods. In this paper, we used K-means clustering algorithm to classify satellite imagery into specific objects within it for cadastral and environmental planning purposes, thereby eliminating the above mentioned problems and getting better classification accuracy with the overall performance for accuracy percentage as 88.889% and Kappa values as 0.835.

This paper reports the effects of sintering schedule to the mechanical properties and microstructure of warm formed powder compacts. Iron powder ASC 100.29 was used as main powder constituent whereas zinc stearate was used as lubricant. The premixed powder mass was compacted at 180ºC by applying 130 kN axial loading and sintered in an inert gas fired sintering furnace at different sintering schedule. The sintered samples were characterized to evaluate their mechanical properties and microstructures. The effect of sintering schedule was studied in terms of mechanical properties, focusing in particular on the relative density, flexural strength and hardness. The microstructure analysis was performed to determine the pore shape, size and distribution. The results revealed that the mechanical properties and microstructures of sintered products were affected by the sintering temperature, holding time as well as the heating/cooling rate.

Social responsibility of organizations has been the most important elements of philosophy, So that it is important to abide by organizations within the social identity theory, Satisfaction of stakeholders outside the organization to legitimate organizations will strengthen. Many of the behaviors and actions of managers and employees, was influenced by moral valuesrooted in ethics. Due to lack of work ethic in management, organizations, societies such as Iran, which was one rich in moral values? The advanced countries have a considerable distance, can create problems for organizations. In addition to increasing the social expectations of organizations, societies, such issues as the environment, women, children, minorities, disabled people, equal employment and staffing reductions, are more sensitive. Organizations ignoring these rights and ethics in dealing with external stakeholders can cause problems for the organization and the organization and action of legitimacy put it, profits, and thus affects the success of the organization. Poor work ethic, the attitude of jobs, organized and effective managers, can affect the performance of individual, group and organizational influence.

The study examined the determinants of consumption of food away from home (FAFH) in the urban sector. The socio-economic characteristics of the respondents and factors motivating it were identified as well as factors that influence the consumption of food away from home. The study used two stage sampling method to select 118 respondents that was used for the study. Data collected were analysed using ordinary least square model. The result revealed that 8 out of the 17 variables considered to influence consumption of FAFH were significant and these are household size, number of children under 6yrs, children between 7 and13years as well as 14 and 17years, total number of visit per week to places for food away from home, number of working female adults and easy access to prepared FAFH. Household size was significant at 1% level and has a direct relationship with household expenditure on consumption of FAFH. The total number of adults present in the household is also significant at 1% and has an inverse relationship with expenditure on consumption of FAFH. Also, the number of children under 6 years is statistically significant at 5% level of significant and it has an inverse relationship with the household expenditure. This could be as a result of specially attention given to young children. Based on the rapid growing trend of consumption of food away from home consumption, this study recommends that FAFH should be taken up by approved and trusted sources putting the health and safety of the consumers into consideration and government agencies concerned with food and health safety should ensure that food served at eateries and restaurants are safe for consumption.

Tin Oxide thin films were deposited by sol gel dip coating method using the acrylamide route. The films were post heated at different temperature in the range of 350-525 ^oC. X-Ray diffraction (XRD) studies indicatyed the formation of tetragonal SnO₂. The Optimum temperature for the formation of the films was 450 ^oC.Microstructural parameters were estimated from the XRD data. XPS studies indicated the peaks corresponding to Sn 3d and 01s. Transmission spectra exhibited interference fringes. Refractive Index was in the range of 2.05-2.18. Optical bandgap value was around 3.68 eV. Three fundamental Raman lines are observed which agree well with that of the bulk material.

A Schiff base namely 3-{4-[4-(Benzylideneamino)benzenesulfonyl]-phenyl}-2-phenylquinazolin-4(3H)-one has been considered here. Theoretical characterization was done by Gaussian-03. The AM1 route has been used. The various parameters such as bond length, bond angle, atomic charge distribution and vibrational frequency analysis have been discussed. The theoretically observed IR values are found to be in accordance with the experimentally obtained values.

In this work we have demonstrated an experimental study and theoretical analysis of the effect of power intensity of illumination on the SnO2/n-Si Hetero-junction devices that irradiated with 150 min. (Cs 137) Gamma ray. The (J-V) characteristic was plotted as function of power intensity of illumination (1.95, 2.88, 3.78, 5.9, and 9.5) mw/cm2. This was shown increase in efficiency of this device until reach maximum efficiency at 9.5 mw/cm2 which represent optimal case. Theoretical analysis of this processes achieve by using “Table Curve 2D version 5.01” program leading to estimate theoretical modeling equation Y= a + b x +c ex We calculate these parameters (a, b, and c) as function of power intensity and testing the equation for power intensity (4 and 8 mw/cm2). Theoretical (J- V) curves are plotted with experimental data, there is a good agreement between them and the behavior of these two curves contain linear term and exponential term.