Past Issue

No education system can rise above the level of its teachers, hence their crucial role in society. The article looks at the importance of pedagogical courses from the stories as told by pre-service science teachers doing a diploma programme in science education with Bindura University of Science Education. Convenience sampling was used to sample a total of 36 participants who completed a closed 4 –point lirket scale questionnaire.

Our aim is to get electromagnetic force in generalized Riemannian geometry similar to Maxwell electromagnetic force . For this non-symmetric metric    is transformed by Levi Civita transformation. Transformed   is a pseudo tenser of weight one, but the force obtained is different from Maxwell tensor force . Second transformation was done from   to   by taking dual of . We observe that now the force is similar to that of Maxwell force with a difference that of values.

Copper and its alloys have found wide application in manufacture of bushes, bearings and high conductivity electrical contractors etc. This paper focuses the challenges and opportunities in the improvement of tribological characteristics of copper flyash composite and identifies low cost reinforcement material .Copper flyash mixtures with different weight percentages were prepared. Copper flyash composites improves strength, stiffness and wear resistance. The major drawback of these copper based composites are reduced conductivity and poor mach inability.

The production of the common commercially Sciaenids species, Pseudotolithus senegalensis off Benin nearshore waters, has been decreasing since 1994, and increasingly more small-sized fishes are regularly harvested, while very little information exist about the species’ population structure and life history. Therefore, population structure, probability of capture and size at first capture were investigated using length-frequency data of 865 specimens sampled from beach seine hauls over a period of 18 months.

The present investigation was undertaken to study the effect of inoculation with NPK fertilizer and Arbuscular mycorrhizal fungi on growth and yield of cassava (Manihot esculenta Crantz). The growth attributes like shoot length, total number of leaves, number of roots per plant and root length and yield attributes, like number of tubers, tuber yield and starch content were noticed maximum under increased 100 per cent NPK with AM fungi inoculated plants.

Indian medicinal plant Martynia annua, a weed   is used in Indian Traditional medicine and in Folklore for many diseases, Martynia annua commonly known as “puli nagam” is a small genus of flowering plants. The leaves are useful in treatment of gargle, treat epilepsy, tuberculosis, sore throat and also given local sedative effect. The results of this study revealed that, flavonoid content of the extracts in terms of quercetin equivalent were 0.26 ± 0.1 mg Qt/g  to 0.49 ±0.12 mg Qt/g  in Martynia annua.

Imprinting is a mitotically stable epigenetic modification that results in functional non equivalency of both parental genomes following fertilization. The phenomenon in which a set of genes is expressed according to their parent of origin. Imprinting occurs primarily in the placenta of mammals and in the endosperm of flowering plants. Imprinting is implemented to allocate limited resources to the offspring over which both paternal and maternal parents are competing. Parental conflict hypothesis and Differential dosage hypothesis explains the origin of genome imprinting in endosperm.

We synthesized silver nanoparticles (AgNPs) by using the biological material, the extract of Allium sativum (Garlic) and chemically synthesized AgNPs by using silver nitrate. The reduction of pure Ag+ ions was monitored by measuring the UV-Vis spectrum of the reaction medium at 2 hours after diluting a small aliquot of the sample into distilled water. Toxicity of AgNPs was tested using toxtrak test in which, fresh overnight broths of Bacillus subtilis and resazurin dye was used to calculate percentage inhibition (PI).

Phosphorus is an essential element for plant growth and development. Because of its sparingly soluble nature it is present in very less proportion in the soil for plant uptake. Major proportions of soil-P remains interlocked in various insoluble forms and not available for plant use. To circumvent the P-deficiency, large amount of chemical P fertilizers are applied to attain reasonable crop yields. Indiscriminate use of P-fertilizers deteriorates the soil quality as well as cause negative impact in respect to both environment and economy.

Biochemical characteristics (lipid in muscle, intestine and gill) of the freshwater carp fish Labeo rohita were estimated. Maximum lipid content was recorded in muscle tissue of Labeo rohita at treated sewage fish culture pond (station – II) and minimum protein content was observed in gill tissue of Labeo rohita at freshwater fish culture pond (station – I). Total lipid content was studied in different days of 5, 10 and 15 days. The different tissues of muscle, intestine and gill lipid maximum was found to be sewage treated fish and compared than fresh water fish Labeo rohita.