Estimation of Background Radiation from A Soil Sample from A Barley Farm Area and Malt Factory in East Arsi, Ethiopia

Authors : T. Y. Haile ; B. S. Goshu ; E. Mengistu

DOI : doi.org/10.47752/sjsr.63.61.69

Abstract:
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Analysis of different Hybrid TEG/TEC Configurations

Authors : Giampietro Fabbri ; Matteo Greppi

DOI : doi.org/10.47752/sjsr.63.54.60

Abstract:
The growing demand for electricity and the looming environmental crisis are the main challenges to be faced and solved today. This calls for innovative energy conversion systems, for which efficiency and reliability are among the most sought-after features. Thermoelectric generators are devices that can offer partial or complete solutions to these challenges of the new millennium. The advantages of these technologically advanced devices are many: they are environmentally friendly, reliable and have a long service life. Furthermore, by applying thermoelectric generators, it is possible to improve the efficiency of existing systems or meet the electricity demand of different systems with high flexibility. At the same time, their low conversion efficiency has so far prevented their wide application, limiting them mainly to research. However, recent advances in thermoelectric materials and devices are pushing this technology to find its place among state-of-the-art energy conversion systems. This review explores the state of the art in terms of research and solutions already on the market, in order to illustrate a comprehensive and realistic perspective of the PV-TEG/TEC structures.

Microbiological Quality of Selected Non-Sterile Pharmaceutical Products Retailed in Anyigba, Kogi State, Nigeria

Authors : Adejo Patience Omebije ; Zakari David Adeiza ; Sule Queen ; Edegbo  Emmanuel ; Akoh Phoebe Queen ; Olorunmowaju Abiodun Israel ; Shuaib Yusuf Danjuma

DOI : doi.org/10.47752/sjsr.63.48.53

Abstract:
This study was designed to check for the microbiological quality of non-sterile products retailed in Anyigba. The use of contaminated non-sterile pharmaceutical products can cause hazards in a majority of ways like economic loss to the industrialists, alter the therapeutic effect of the drug and affect the health of a patient. A total of 10 samples were collected; the isolated organisms were characterized and identified by using morphological, cultural and biochemical tests. The organisms isolated were Staphylococcus aureus, E.coli and Pseudomonas spp, Aspergillus spp, Mucorspp, Saccharomyces spp and Rhizopus spp. The percentage of the isolate includes S. aureus 37 (45.7%), E.coli 16 (19.7%) Pseudomonas spp 28 (34.5%) to safeguard the product from contamination, it is important to ensure that good manufacturing practices such as raw material testing, equipment sanitization and automation, microbial testing of water, training of personnel, post marking surveillance, monitoring of environment among others were employed. The focus should also be on surveillance and effective monitoring of the distribution and marketing of pharmaceutical products. Local regulatory agencies such as the Standard Organization of Nigeria (SON), and the National Agency for Food,drug administration and Control (NAFDAC) should always ensure that all pharmaceuticals released into the market for sales and consumption should conform to specifications and are fit for their intended use.