Archives-December 

The concept of independence, central to self-regulated learning (SRL), differs from interdependence, the focus of learning communities. However, a hybridization of the two conceptualizations is not inimical. In fact, careful consideration of the thrust towards constructivist learning environments and the development of effective learning communities makes self-regulated learning an imperative in education at all levels. This is because self-regulated learning enhances learning outcomes and engagement in the learning process for both teachers and students. Learning communities have also been noted for their ability to enhance engagement, improve achievement, and facilitate authentic learning. Teachers are aware of the value of self-regulated learning (SRL), however, the extent to which it is perceived as critical to the success of effective learning communities is taken for granted. This position paper argues for the incorporation of SRL into the learning community pedagogic framework. In this context, the value and operationalization of SRL will be explored through explication of SRL studies implemented in real classrooms. Particular emphasis will be placed on the ways in which the aims of SRL and learning community pedagogies meet and diverge and the manner in which essential features the two might be integrated to enhancing the latter.

Soft rot of fruit causing disintegration of cells and dissolution of middle lamellae due to the action of enzymes secreted by Erwinia sp.The colour of fruit also changes to brown- blackish in a part or the whole part damaging tissues of the fruit and the watery secretions leads to 10-15% loss in the productivity in the Districts of Sunsari and Morang of Province No. 1 and adjoining area of India. Bacterial wilt is also produced by Erwinia sp. Singh (1968)16. Toxins also produced by Erwinia sp., which cause disturbance in metabolic activity of Lagenaria siceraria (Mol.) Standl. Erwinia sp. is seed borne and soil borne pathogen.

Clay (soil) is a “biologic sink”. It contains nutrients, toxic elements, organic matter and microbes among other things. The clay can pose a health threat. It was postulated by Ellis and Schnoes in 2002 that people who eat clay risk psychological abnormalities and health consequences such as lead poisoning and bacterial or parasitic or worm infection. Most spore forming bacteria, such as bacillus and clostridium, like to live in soils [1]. A person can start feeling some abdominal pains when the soil or food contains about 105 colonies of bacillus or clostridium per gram of soil or food in the body [2]. Clostridium in the female genital tract may induce abortion and result in uterine gas gangrene [2].

Voluntary return is the assisted or independent return to the country of origin, transit or another third country based on the free will of the returnee. Voluntary return is informed and unforced return of a refugee to his country of origin. Therefore, this paper is intended to deal the concept of voluntary return as a product of two main components: The right to return and the right not to be forced to return. The latter is concerned with voluntariness of repatriation. There are various pulling and pushing factors which instigate the return of refugees to their country of origin. The return of refugees and asylum seekers may be classified as voluntary repatriation, mandatory return of rejected asylum seekers who are required by law to leave, and forced return of rejected asylum seekers. It is dealt that voluntariness of returning to home country is an essential right of refugees.

The trend of urbanization in Iraq is exerting stress on civic authorities to provide basic requirement such as safe drinking water, sanitation and infrastructure. The rapid growth of population has exerted the portable water demand, which requires exploration of raw water sources, developing treatment and distribution systems. There is a need to study the water treatment plants for their operational status and to explore the best feasible mechanism to ensure proper drinking water production with least possible rejects and its management. A case study has been conducted to evaluate the process of treatment and to find out the problems of drinking water treatment process in Al-Rumaitha drinking water treatment plant(RWTP) lies in the city of Rumaitha in Muthanna province,Iraq. In general, conventional treatment is provided having a sequence of alum addition, coagulation, sedimentation, filtration and disinfection by chlorination. Water treatment plants are playing an important role in purifying and supplying the pure water to the people. This plant consists of two projects, The design capacity of the old project (88000 m3 / day ) and for the new project ( 820 m3 / hr) while not know the actual capacity of the plant due to lack of flow gauges. In this study, the removal efficient of turbidity will be addressed as well as three factors are, total dissolved solids , pH and values of chlorine added at February,2015 of old and new project for raw and treated water, then compared within Iraqi limits to note the problems of the plant and how to avoid them in the easiest and cheapest methods. It was found that the average value of the removal efficiency of the turbidity were about 51.5% of old project and 53.8% of new project which is relatively low due to the absence of the permanent maintenance and the continuous clean out for the sedimentation basin. The average value of T.D.S concentration of treated water were 910.8 ppm of old project and 911.5 ppm of new project . The free chloride (CL2)of old project was 2.1 ppm and of new project was 2.6 ppm. While we don't note that the strong influence of the change in temperature on the factors which studied in this project. The pH value is almost constant values for the water of the Euphrates River. In addition to the study of these factors there are notes on the treatment plant should study and develop plans for processing and control. It is upon these observations lack of flocculation basin, limiting the efficiency of the sedimentation basins despite large size disrupt dissolve alum basins as alum is added to it manually, leading to differing concentrations of alum solution. From time to time and other problems presented piping at the station, as is since the establishment.

Response Surface Methodology was used to evaluate the interactions of carbonization temperatures of adsorbents and concentrations of adsorbates on the adsorption capacities and removal efficiencies of activated carbons obtained from flamboyant (Delonix regia) pod bark (FB), milk bush (Thevetia peruviana) kernel shell (MB) and rice (Oryza sativa) husks (RH). The activated carbons produced at various temperatures (300 – 6000C) were used to adsorb concentrations (50 – 150 mg/L) of naphthalene and acenaphthene in a batch process at 150 rpm. The amount adsorbed was quantified with gas chromatography (GC-FID). Two factors interaction (2FI) model , showed that the interactions between increasing activation temperature of the adsorbents and increasing concentrations of the adsorbates increased the adsorption capacity of the MB while the adsorption capacities of FB and RH were reduced. The order of suitability of the adsorbents is MB > RH > FB and MB > FB > RH, respectively.

This paper presents the effect of five dissolved inorganic salts (NaCl, CaCl2, ZnCl2, CdCl2 and NH4Cl) on the endothermic enthalpy of mixing of the binary methanol + ethyl acetate system has been investigated at 303.15 K, using an isothermal batch calorimeter with vapour space. The endothermic excess enthalpies of mixing values are significantly increases for the addition of ZnCl2, CdCl2 and CaCl2. For the addition of NaCl and NH4Cl salts are insignificantly decreases the endothermic excess enthalpy values. The experimental values of the enthalpy of mixing were fitted into a Redlich – Kister equation, the deviations and parameters were reported. The experimental and correlation results reveals that the importance of the solvent- solvent and solute-solvent interaction by the enhanced excess enthalpy of mixing (HE) values in the positive direction with increasing concentration of the salts.

Phthalates are one of the more favoured plasticisers in polymer industries. The phthalic acid (benzene-1,2-dicarboxylic acid) diesters an artificial substance with a variety of industrial uses, generally known as phthalates. They are of two types: High molecular weight (HMW) phthalates, like DEHP[di(2-ethylhexyl)phthalate], DnOP(di-n-octyl phthalate), and DiNP(di-isononyl phthalate), which are mainly employed in the manufacturing of flexible vinyl to make them more flexible and pliable, and then used to make goods, placemat and wall coverings, applications that come into contact with devices of medical and food. Low molecular weight (LMW) phthalates, those are use in varnishes and coatings, as well as some times releases medicinal preparations, fragrances, moisturizers, and cosmetics. DEP (diethyl phthalate) and DBP (dibutyl phthalate) are the examples of LMW type of phthalate. Exposure to phthalate esters has increased fear of the health and well-being of women. Several noxious exposures of phthalates have been shown to have an adverse impact on health. In the present scenario phthalates exposure has been recognized. However, among the overall human population women are one of the most vulnerable groups, which are often a victim of self-ignorance. Some of the major health issues frequently observed in women due to phthalate exposure are endometriosis, precocious puberty, hormonal disbalance, obesity etc. Although some studies are available concerning the effects of phthalate exposure on women yet major area remains unaddressed. The present review gives insight into the extent of work performed in the above area along with respective loopholes. Also, an attempt has been made to understand the proper mechanism given by simultaneous researchers throughout the globe. Moreover, the study will enable to help professionals in the field to regulate the extent of exposure along with highlighting the alarming situations as a result of phthalate usage and acquaintance.

The purpose of the study was to determine the extent to which principals’ forms of communication influence students’ discipline in secondary schools in Nandi County, Kenya. The study used systems theory by Ludngvan Bartalanffy. Descriptive survey design was adopted. The study sample consisted of 118 public and private schools’ principals, 108 teacher and 1534 student leaders. Each school provided 13 student leaders. Questionnaires for principals, interview guide for teachers and student leaders were used as instruments of data collection. Data was analysed using SPSS. Descriptive statistics was used to analyse data then, tabulate and present data. The results generated were reported in tables. The study establishes that communication clarity is a key component to adherence of instructions given. The information has highest clarity when given in student baraza. The principal is able to explain himself to the satisfaction of the students and issues raised are promptly answered. The students are able seek clarifications on issues they want sorted out. This enhances discipline. The national and county quality and standards officers should be designed by MOEST to bolstering their assessment capabilities to adequately report accurately on true causes of discipline cases in schools and particularly in Nandi County and give out specific remedies to work out on how to reduce the prevalence.

Horseradish peroxidase is a comprising enzyme which can be appropriate to oxidoreductases and is intricate in degradation of definite intractable organic complexes like phenol and substituted phenol via free radical polymerization. Peroxidase was extracted and purified from horseradish using ammonium sulphate for dialysis, gel filtration and precipitation chromatography. Spectrophotometer was used for assay of horseradish peroxidase in this present research. Horseradish peroxidase increased activity from 5.211 to 9.246 U/ml by purification. It gained 29.67 folds purification at this final step. In addition to its beneficial in characterization of glucose in blood; moreover it can destroy microbial strains.