Archives-November 2019

The low voltage profile of the Nigeria grid results in poor voltage regulation in the network. The objective of this paper is to improve the voltage profile of the network using Static Var Compensator. The condition of the network was obtained through load flow technique. After performing load flow analysis, it was observed that some buses were violated that is, they were operating below the standard limit of 0.95 - 1.05 PU (313.5kV - 346.5kV). The Static Var Compensator is an important FACTS device which contains majorly a combined combination of the capacitor, inductor and the thyristor. The installation of SVC helped to improve the voltage profile of the affected buses to 1PU.

Acoustic waves have a massive potential in the realm of crack detection. Since cracks remain undetected for a long time, which may result in component damage, all sorts of methodologies which help in crack detection are considered to avoid deterioration and failure. Acoustic Emission (AE) is a critical indicator of crack initiation and propagation. Due to this, crack localization is done effectively using AE in different applications. The methodologies incorporating the acoustic waves' ability to detect and probe the crack existence is found to be practically viable and feasible. The paper makes an effort to analyze the different methodologies incorporating the AE towards the crack detection and propagation from all practical perspectives.

The lack of devices to test the tiles is not a reason to ignore the problems related to their durability. This article presents the results of an analysis of the impact behaviour of three qualities of tiles. The strike force of a TFM is 70% lower than that of a TMV and 54% lower than that of a TAC tile. Deflection results (TFM = 1.24 mm; TMV = 0.56 mm and TAC = 0.68 mm), stresses and deformations show that TFM resists better because it deforms extensively before breaking.

Uterine rupture and retroperitoneal hematomas are all associated with increased risk for hemorrhage at the time of delivery. Prior cesarean section and Obstetric trauma are significant risk factors for uterine rupture. Except for the most superficial tears, these situations require surgical repair to restore proper anatomical appearance and to limit blood loss. Subtotal hysterectomy is commun. Management of retroperitoneal Hematoma depends on the clinical situation. It can be managed conservatively, surgically, or through use of angiographic embolization. We report a case of a 28 years old woman who presents a uterine rupture complicated with retroperitoneal hematoma after vaginal delivery.

Pregnancy causes an altered immune response which predispose pregnant women to increased severity of infections. Management of septic shock requires prompt resuscitation with volume expansion, inotropic therapy and empiric antibiotic therapy. Toxic shock syndrome can be caused by Staphylococcus aureus or Clostridium sordellii. It may occur unexpectedly after an uncomplicated pregnancy and delivery. Management includes antibiotic therapy with penicillin and clindamycin and early surgical intervention. Immunoglobulins may be beneficial. We report the case of a 22 years-old primagravida who represents a septic shock during labor caused by staphylococcus aureus which the point of departure was a urinary tract infection.

Many small businesses in the United States, including barber salons face challenges in succeeding during the initial years of business formation and establishment. The factors responsible for the low survival rate of salons may include factors such as the limited training and education levels mandated by state certification requirements. The purpose of this multiple case study was to identify business strategies that successful barber salon owners use to overcome the business management and staffing challenges associated with a small pool of skilled barbers and the high turnover in a low wage profession. The theory of transformational leadership served as the foundation of the conceptual framework. The data collection included interviews of 3 successful barber salon owners who met the study participation eligibility criteria of licensed, registered, operating a salon business in the Indiana region for more than 5 years, and over the minimum age of 25 years. The principal themes emerging from the interview data analysis were salon leadership and managerial strategies. The data analysis also involved the triangulation of the primary research data against secondary data from the Small Business Administration and barber industry reports. The expertise and knowledge shared by the interviewees could serve the quest of barber salon businesses in the Indiana region to overcome the profitability and financial sustainability challenges of this industry. The study findings may potentially contribute to positive social change by improving the economic standing and welfare of barber salon owners and professionals in the community.

The present study aims to evaluate the microbiological quality of smoked fish from some lake villages near Lake Ahémé. To do this, samples of smoked fish were taken at different sites, followed by microbiological analyzes. The results obtained after the surveys showed, two technological variants of smoking that the fish is lean or fat. Those resulting from the evaluation of the microbiological quality of the fish reveal the presence of several microorganisms including total mesophilic aerobic flora, total coliforms, staphylococci with maximum values of 320.102 cfu / g for coliforms and 280.102 cfu / g for Staphylococci exceeding the normative criteria. It also showed the presence of the fungal flora, the complete absence of fecal coliforms and sulphite-reducing anaerobes in all the samples studied.

This study focuses on Sô-Ava’s population well-being regarding to drinking water quality especially in the villages of Ahomey- lokpo and Ahomey-ounmey. Samples of water were taken at three kinds of sites (bollard fountains, river sô and shallows) and analysed for searching their physico-chemical and microbiogical characteristics. The differents parameters values obtained are sometimes higher than standards. Indeed for example the averages are ranged from 0,0264mg/L to 0,5247 mg/L for nitrites and from 0,73mg/L to 2,86 mg/L for total iron. Averages microbiological parameters also range in 0-19600 UFC/100mL for faecal coliforms and 42-560 UFC/100mL for total coliforms and finally 0-190 UFC/100mL for faecal streptococcus.

100 g of dried leaves of Mentha spicata produced 1.1% of volatile oil by hydro distillation method. GC-MS, method used to identified the chemical compound of the volatile oil, it contained eighteen compounds, ten of them constituted as the major compounds, carvone (58.3%), cis-carveol 14.99%), limonene (8.5%), carvyl acetate (3.10%), ?-pinene (1.22%), ß –Pinene (2.11%), Menthone (1.08%), Menthol (1.01%), ß- bourbonene (1.98) and trans-Caryophyllene (1.75). The spearmint volatile oil more actively against gram positive bacteria (Staphylococcus aurous and Bacillus cereus) than gram negative bacteria,( Escherichia coli, Klebsiella pneumonia, Pseudomonas aeruginosa and Salmonella typhimurium). The activity of antibiotic Chloramphenicol, Ciprofloxacin, Tetracycline Ceftriaxone, and Gentamycin against bacteria found differences inhibition zoon. Among all antibiotic. ciprofloxacin have more activity against bacteria while Ceftriaxone have the lower activity.

This study established the association between fish farming management practices and fish yield in Kakamega County, Kenya. The results were that fish farmers who record the highest fish harvest of over 400 Kgs of fish output per 300 m2 fishpond are those who check water quality at their ponds and apply corrective measures; and those who get their fingerlings from accredited sources. The success of fish farming as an economic livelihood activity in Kakamega County depends on the proper application and appropriate implementation of fish farming management practices. These include management of water and management of the production units through appropriate stocking, feeding and record keeping.