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November 01 2019

sciencedomaininternational

Density Dependent Delayed Migration for Rosenzweig-Macaurther Model with Holling Type II Predator Functional Response

The model describing the interaction between the predator and prey species is referred to as a predator-prey model. The migration of these species from one patch to another may not be instantaneous. This may be due to barriers such as a swollen river or a busy infrastructure through the natural habitat. Recent predator-prey models have either incorporated a logistic growth for the prey population or a time delay in migration of the two species. Predator-prey models with logistic growth that integrate time delays in density-dependent migration of both species have been given little attention. A Rosenzweig-MacAurther model with density-dependent migration and time delay in the migration of both species is developed and analyzed in this study. The Analysis of the model when the prey migration rate is greater than or equal to the prey growth rate, the two species will coexist, otherwise, at least one species will become extinct. A longer delay slows down the rate at which the predator and prey population increase or decrease, thus aecting the population density of these species. The prey migration due to the predator density does not greatly affect the prey density and existence compared to the other factors that cause the prey to migrate. These factors include human activities in the natural habitats like logging and natural causes like bad climatic conditions, limited food resources and overpopulation of the prey species in a patch among others.

Please read full article : - www.journalarjom.com
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Identification of Industrial Hazards and Assessment of Safety Measures in the Chemical Industry, Nigeria Using Proportional Importance Index

Proper identification of hazards and creation of a safe working environment is a major challenge faced by management of many industries today. Hazard assessment is thus carried out in workplaces to identify dangerous events and conditions that may lead to accidents in the industries. This study, which was carried out in both a petrochemical and an oil refining companies of Nigeria, identified industrial hazards and assessed safety measures in the Chemical Industry (CHI) of Nigeria. A well-structured questionnaire instrument was used for data collection. The study was carried out amongst technical staff and management staff of the chemical industry whose day-to-day duty is such that they are exposed to one form of hazard or the other in the industry. The questionnaire was administered to 96 technical staff and management staff in the CHI out of which 84 (88%) were completed and returned. The study focused on types of hazards, hazards and risk awareness, implementation of control measures and effectiveness of safety hazards and risk management programmes in the chemical industry of Nigeria. Modified Proportional Importance Index (PII) and a four-point Likert scale were adopted in data analysis. Results revealed that loud noise (PII = 3.2; respondents = 92%), working at heights (with PII = 3.1; respondents = 89%) machines and equipment vibration (PII = 3.0; respondents = 87%), high voltage areas (PII = 2.9; respondents = 84%) and chemical spills (PII = 2.5; respondents = 55%) are the most high ranking hazards in the chemical industry. A high level of safety hazard awareness was found among workers in the industry (p < 0.05, 95%Cl.; PII = 3.1 - 3.5). The outcome of the intervention showed that Chemical Industry Number 1 (CHI-1) improved from 87.90% to 98.09%, Chemical Industry Number 2 (CHI-2) improved from 81.53% to 95.54% on worker’s knowledge on the identification and assessment of hazards and risk in the chemical industries. These hazards pose threats to the safety of workers and should be effectively controlled to reduce associated risks to as Low as Reasonably and Practically Achievable (ALARPA).

Please read full article : - www.journalacri.com
sciencedomaininternational

Identification of Industrial Hazards and Assessment of Safety Measures in the Chemical Industry, Nigeria Using Proportional Importance Index

Proper identification of hazards and creation of a safe working environment is a major challenge faced by management of many industries today. Hazard assessment is thus carried out in workplaces to identify dangerous events and conditions that may lead to accidents in the industries. This study, which was carried out in both a petrochemical and an oil refining companies of Nigeria, identified industrial hazards and assessed safety measures in the Chemical Industry (CHI) of Nigeria. A well-structured questionnaire instrument was used for data collection. The study was carried out amongst technical staff and management staff of the chemical industry whose day-to-day duty is such that they are exposed to one form of hazard or the other in the industry. The questionnaire was administered to 96 technical staff and management staff in the CHI out of which 84 (88%) were completed and returned. The study focused on types of hazards, hazards and risk awareness, implementation of control measures and effectiveness of safety hazards and risk management programmes in the chemical industry of Nigeria. Modified Proportional Importance Index (PII) and a four-point Likert scale were adopted in data analysis. Results revealed that loud noise (PII = 3.2; respondents = 92%), working at heights (with PII = 3.1; respondents = 89%) machines and equipment vibration (PII = 3.0; respondents = 87%), high voltage areas (PII = 2.9; respondents = 84%) and chemical spills (PII = 2.5; respondents = 55%) are the most high ranking hazards in the chemical industry. A high level of safety hazard awareness was found among workers in the industry (p < 0.05, 95%Cl.; PII = 3.1 - 3.5). The outcome of the intervention showed that Chemical Industry Number 1 (CHI-1) improved from 87.90% to 98.09%, Chemical Industry Number 2 (CHI-2) improved from 81.53% to 95.54% on worker’s knowledge on the identification and assessment of hazards and risk in the chemical industries. These hazards pose threats to the safety of workers and should be effectively controlled to reduce associated risks to as Low as Reasonably and Practically Achievable (ALARPA).

Please read full article : - www.journalacri.com
sciencedomaininternational

Chromatographic Detection of Antibacterial Antibiotics from Pseudomonas fluorescens (TNAU PF1) and Their Effect on Bacterial Wilt Pathogen Ralstonia solanacearum (KK2)

Bacterial wilt of tomato is a devastating disease incited by Ralstonia solanacearum (KK2) causing heavy yield loss in India. The antagonist Pseudomonas fluorescens (TNAU PF1) was characterized for antibacterial ability against the bacterial wilt pathogen. Thin-layer chromatography (TLC) identified six distinct antibiotics in crude metabolite of TNAU PF1 strain. The crude antibiotics and the antibiotics 2,4-diacetylphloroglucinol and Phenazine of TNAU PF1 showed best in vitro antibacterial activity against the bacterial wilt pathogen R. solanacearum. The ability of crude antibiotics in inhibiting Ralstonia colonies was higher than the individual antibiotics (2,4-diacetylphloroglucinol and Phenazine) under in vitro. Further, GC-MS analysis of the semi-purified crude extract of Pseudomonas fluorescens (TNAU PF1) identified six antibacterial compounds viz., Phloroglucinol dimethyl ether, Patulin, Hemipyocyanin, Phthalic acid, butyl 2-pentyl ester, Phenazine and 1-Phenazinecarboxylic acid that would be synergistically inhibited the colony multiplication of the pathogen. The study emphasized the antagonistic activity of the Pseudomonas fluorescens (TNAU PF1) for the management of bacterial wilt disease.

Please read full article : - www.journalirjpac.com
sciencedomaininternational

Correlation between Morphological Architecture of Rice Seed and Transmission of Fungal Pathogens

A total of ten rice (Oryza sativa L) seed samples of variety BR 28 were collected from the farmers of (Salakandi, Boira) Mymensingh,Bangladesh. Prevalence of fungi was recorded as Bipolaris oryzae, Fusarium oxysporum and Fusarium moniliforme,through blotter test. Statistically B. oryzae wasrecorded as the highest prevalent fungus in all the seed samples of various architectural categories of seeds such as large (14.5%), medium (9.5%), small (11.5%) followed by (14.5%) and (4.5%), respectively in shriveled and chaffy seeds. While in large, medium and small seeds F. moniliforme was recorded significantly as the least prevalent pathogen. The effect of colour on the transmission of B. oryzae was recorded as the highest in number in case of bright seeds (8.5%) and spotted seeds (dark brown) (17.5%). The effect of smooth and rough surface on the prevalence of fungal pathogen B. oryzae was recorded as the highest in number in case of awnned seed (21.5%), smooth surface (12.25%) and rough surface seeds (18.5%). The regression equations of the fungal pathogens indicate that the morphological architecture of the seeds shape & size, colour and smooth and roughness significantly correlated with the transmission of pathogens Statistically, the highest germination of seeds was recorded in the medium sized (83.5%). The highest germination of seed was recorded in the spotted seed (69.5%). The minimum germination of seed was recorded in the bright colour seed. The highest germination of seed was recorded in the awnned seed (59.5%) followed by smooth surface (37.5%) and rough surface (53.5%). These results obviously indicate the tangible effect of the seed architecture at the transmission of the fungal pathogens affecting the planting value as well as germination of the rice seeds.

Please read full article : - www.journalarrb.com

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Effectiveness Test of Orchid Mycorrhizal Isolate (Ceratorhiza and Trichoderma) Indonesia and Its Role as a Biofertilizer

Aim: The existence of Orchid Mycorrhizal Fungi (OMF) has a role to stimulate growth and support the supply of orchid nutrition as a biofertilizer agent. This study aimed to determine the association of mycorrhizal with Phalaenopsis amabilis (L.) Blume which was carried out through the effectiveness test of two Indonesian orchid mycorrhizal isolates i.e. Ceratorhiza and Trichoderma.

Study Design: This study consisted of 4 treatments. Each treatment was repeated 3 times, each repetition of 5 plantlets, so that the total plantlet used was 60.

Place and Duration of Study: Laboratory of Plant Biotechnology, Department of Biology, Universitas Gadjah Mada, Indonesia, between June 2017 and April 2018.

Methodology: The method of inoculating orchid mycorrhizal by placing a plantlet in a petri dish containing orchid mycorrhizal for 1, 2, 3, and 4 days. Then plantlets are grown on sterile moss growing media and acclimatized in a greenhouse. Observation of each treatment is carried out every day for the next month. Observation variables include the number of initial and final roots, the number of live and dead roots, and the number of living and dead plants.

Results: The results of the orchid mycorrhizal induction test showed that the Ceratorhiza inoculation treatment showed a fluctuation in the mean increase in the number of final roots, live roots, dead roots, and dead plantlets that were higher than the Trichoderma inoculation treatment. The results also showed that the best inoculation time on Ceratorhiza and Trichoderma was day 3 and 4. The adaptation process had the effect of increasing the number of dead roots in weeks 1 and 2. The adaptation process stopped at the beginning of week 4 with the number of new roots appearing a lot.

Conclusion: Orchid mycorrhizal Ceratorhiza shows the value of effectiveness test compared with Trichoderma. The results of this study are expected to be basic information in efforts to cultivate natural orchids in Indonesia.

Please read full article : - www.journalarrb.com

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A Substrate Made from Açaí Berry Waste Used in the Production of Aroeira (Myracrodruon urundeuva) Seedlings

The açaí berry processing activity generates a large amount of waste that is a problem in several cities, mainly in the Amazon region of Brazil, due to the large production of açaí juice. This study aimed to reuse the waste from açaí berry’s processing as a substrate in the production of aroeira native seedlings, studying the effects of its application and evaluating the morphological parameters results. The experiment was carried out in the greenhouse in the city of Imperatriz - MA, with waste collection carried out in 2015. After collection, part of the waste was charred and transformed into the substrate through grinding and sieving. Subsequently, the substrates were mixed with the local soil in different proportions. Thus, the 9 treatments were obtained. To test the substrate the native aroeira species was used. The effects of different treatments were evaluated 15, 30, 45 and 60 days after germination, by plant height (H), neck diameter (ND) and leaf number (NL). The results showed that the use of this residue is not promising as a substrate because they do not have good performances for the parameters evaluated in the seedlings.

Please read full article : - www.journalarrb.com
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Therapeutic Effects of the Anti-diabetic Polyherbal Drug Diawell in Combination with Metformin on Liver and Lipid Parameters in Type 2 Diabetic Rats

Type 2 diabetes is one of the most important diseases worldwide. It affects several organ systems including the liver and lipid metabolism. Many herbal formulations have shown anti-diabetic potential, however, their safety and efficacy remain a debate in the medical community.

Aim: This study evaluates the therapeutic effects of the anti-diabetic polyherbal drug diawell in combination with metformin on liver enzyme and lipid profile in type 2 diabetic rats.

Methodology: A total of 35 male Wistar albino rats weighing between 120-220 g were used for this study. The rats were placed on high fat diet, and diabetes was induced by a single intraperitoneal injection of freshly prepared streptozotocin (STZ) (45 mg/kg body wt). Fasting plasma glucose (FPG) was determined using the glucose oxidase method. Total Cholesterol (TC), Triglyceride (TG) and High density lipoprotein cholesterol (HDL-C) were determined using enzymatic methods. Low density lipoprotein cholesterol (LDL-C) was calculated using the Friedewald equation. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were determined using Reitman-Frankel method, while alkaline phosphatase (ALP) was determined using the colorimetric phenolphthalein method. Liver sections were stained using haematoxylin and eosin (H&E) staining technique, and phytochemical analysis was also done on the herbal tablet.

Results: The results show no significant differences in mean TC levels in all groups. TG level was significantly higher in the diabetic control when compared to the negative control. There were no significant differences in TG levels in the metformin group, and diawell group when compared to the diabetic control. TG levels in the combination group (metformin + diawell) was significantly lower versus the diabetic control, and showed no significant difference compared to the negative control. HDL-C was significantly higher in the negative control when compared to the diabetic control and the treatment groups. There were no significant differences in HDL-C levels in all the treatment groups, when compared to the diabetic control. LDL-C levels were significantly lower in the negative control compared to the diabetic control and treatment groups. There were no significant differences in LDL-C levels in all the treatment groups, when compared to the diabetic control. The diabetic control had significantly higher ALT, AST and ALP levels compared to the negative control and treatment groups. All the treatment groups showed no significant differences in ALT and AST levels compared to the negative control. Liver sections of the negative control showed normal histoarchitecture. The diabetic control showed inflammation and fatty deposition. The treatment groups showed a nearly normal histoarchitecture, with fatty deposits.

Conclusion: High fat diet in combination with 45 mg/kg of STZ produced significant diabetes in the Wistar rats with dyslipidaemia and elevated liver enzyme levels. Metformin and the polyherbal tablet diawell had no impact on the lipid levels as it did not correct the dyslipidaema, however, the treatments showed hepatoprotective potentials and restored liver enzyme levels to normal. Lipid lowering drugs should be included in the management of type 2 diabetes, and there should be proper evaluation of anti-diabetic herbal products.

Please read full article : - www.journaljocamr.com

sciencedomaininternational

Assessment of CD34+ Cells and Total Nucleated Cells in Umbilical Cord Blood in a Tertiary Hospital South-south, Nigeria

Aim: Umbilical cord blood (UCB) contains sufficient number of haematopoietic stem cell and progenitor cells that can be used for autologous and allogeneic stem cell transplantation in children and adolescents. Our study assessed the CD34+ cells and total nucleated cells in umbilical cord blood stem cells in a tertiary institution in Nigeria.

Study Design: This is a cross-sectional study.

Place and Duration of Study: This study was conducted in University of Benin Teaching Hospital (UBTH), Benin City. Informed consent for UCB collection was obtained from healthy mothers with uncomplicated pregnancies, receiving care at the Department of Obstetrics between July and September, 2016.

Methodology: A total of forty umbilical cord bloods samples were collected from the placenta umbilical cord after delivery. CD34+ cells were enumerated using flow cytometer while haematology analyzer was used to assess total nucleated cell (TNC) count. Data was analysed using Statistical Package for Social Sciences (SPSS) version 21.

Results: CD 34+ cells count ranged between 2.0 - 6.99 x 104cells/ml with a mean value of 3.89 ± 1.48 x 104cells/ml (Recommended minimum value 2x105/kg). Mean value of TNC was 11.14 ± 4.47 x 106 cells/ml with a range of 4.80-21.10 x106 cells/ml (Recommended minimum value 2x 107 /kg). We observed a positive correlation between CD34+ cells and TNC count (r = 0.760, p=0.000).  In addition, maternal parity showed a significant inverse relationship with TNC and CD34+ cells.

Conclusion: CD34+cells and TNC count of UCB obtained from placentae of babies delivered at the University of Benin Teaching Hospital are within the acceptable values for haematopoietic stem cell transplantation. This is in keeping with recommendations by the World Marrow Donor Association, which stated that a minimum of 2 x107 TNC/kg or 2 x105 CD34+ cells/kg of body weight of recipient.

Please read full article : - www.journalijr2h.com
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Salts in Organic Synthesis: An Overview and Their Diversified Use

The chemistry of salt is of great importance due to its immense potential from the daily life use to the synthetic chemistry like as workup material, as reagents, as phase transfer catalyst, as acid, as base, as catalyst, as agents for asymmetric synthesis, for some specific reaction transformation, to increase yield, decrease reaction time, ecofriendly synthesis, handling easiness and many more. This review summarizes the overall basic background of salts like how it is formed, nature of salt, generalized application of salts in daily life to synthetic chemistry, its application on other diverse fields, and list of individual categories of major commercially available salts with some structure. Besides having a lot of information on the internet about salts, this review tries to focus on a generalized overview that could be helpful for all to understand salt chemistry.

Please read full article : - www.journalajacr.com

sciencedomaininternational

Traumatic Bilateral Epiphyseal Injury: A Case Report

Bilateral distal radial epiphyseal injuries are rare injuries in children. So far, only a few cases have been reported. The upper limbs play a vital role in the survival and defense mechanism in children. Therefore, injury to both wrists can be temporarily incapacitating. We reviewed medical records of the patient including clinical findings, radiological studies, treatment and follow up documentation, as well as relevant literature. We present a case of a nine year old boy who sustained bilateral closed distal radial epiphyseal injury following a fall from a coconut tree. He was managed conservatively by closed manipulation and bilateral below elbow cast application. Bilateral distal radial epiphyseal injury is quite rare and debilitating to the affected child. However, it can be successfully treated conservatively.

Please read full article : - www.journalajorr.com

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Periostin: A Potential Biomarker for Periodontitis

Background: Periostin is among the most important extracellular matrix proteins, that seems to play a role in the healing of periodontal defects as a modulator of periodontal ligament (PDL) hemostasis. This study aims to review the available literature on this protein and its role in the healing of periodontal defects.

Methods: An electronic search of the literature was carried out in PubMed and Google Scholar using the keywords “periostin”, “gingival crevicular fluid”, “saliva” and “periodontitis”.

Results: Periostin, as an extracellular matrix protein, was found to play a key role as a modulator of critical cellular interactions in disease conditions. It is necessary for tissue integrity and plays a critical role in wound healing.

Conclusion: The role of periostin in cell proliferation, differentiation, migration and signalling to maintain hemostasis has yet to be identified. Further studies are warranted in this respect.

Please read full article : - www.journalajds.com
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The Diagnostic Value of the Glucose Curve in Individuals with and without Diabetes

Aim: Of this study is to demonstrate the importance of glucose curve test in monitoring pre and post-meal variation in diabetic and normal individuals.

Methodology: The individuals subjected to this study mainly grouped in two categories the (DM2 group) and the (Control group), they instructed to came fasting at which blood sample will be collected in EDTA and blank tube then after 30 min. the first post-prandial blood sample collected and then after every 1,2,3,4,5,6,7,8 hours blood sample collected subsequently, then serum separated from each sample (except the EDTA tube) analysed biochemically for glucose and glycated haemoglobin HbA1c (from EDTA tube).

Result: We found that, the calculated glucose based on mean glycated haemoglobin HbA1c% results underestimate the real concentrations all over the glucose curve in control group but in DM2 group it underestimate the mean and some actually measured concentration in some points of the curve which adds more burden on the diabetic patient and the responsibility of adjusting the dose and time of administration.

Conclusion: from our prospect we recommend the use of blood glucose curve as a monitoring and diagnostic tool generally for glucose metabolism in normal, pre-diabetic, diabetic and uncontrolled diabetic patients before and during therapeutic conditions.

Please read full article : - www.journalajrb.com
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Antiplasmodial, Hepatic and Nephritic Effects of Fractions of Methanol Leaf Extract of Glyphaea brevis in Plasmodium berghei-Infected Mice

This study evaluated the antiplasmodial, hepatic and nephritic effects of fractions of Glyphaea brevis methanol leaf extract in P. berghei infected mice. Mice weighing between 15-30 g were infested intraperitoneally with 0.2ml plasmodium infected blood and left for 3 hours before treatment. Infected test groups were treated via oral route of administration with varying doses (200, 300 and 400 mg/kg body weight) of ethylacetate, N-butanol and residual aqueous portion fractions of the Glyphaea brevis methanol extract and Artemisinin (5 mg/kg b.wt) for four days. N-butanol fraction showed the highest antiplasmodial activity (76.64%), followed by residual aqueous portion (73.25%) and ethylacetate (72.99%); Artemisinin has 86.13%. Serum bilirubin (total and conjugated) concentrations of the untreated group (0.82 ± 0.20, 0.51 ± 0.12) were significantly lower (P<0.05) than those in the infected group treated with 300 mg/kg of the residual aqueous portion (1.36 ± 0.20, 0.76 ± 0.05) respectively. Serum albumin levels showed significant (P<0.05) increase in all the groups treated compared to the positive control. Serum total protein, urea and creatinine levels of test groups were not significantly (P>0.05) different from the positive control group. Conclusively, Glyphaea brevis has substantial antiplasmodial activity and could provide a lead for new antimalarial drug development.

Please read full article : - www.journalajrb.com
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Haematological Assessments of Cocos nucifera Linn. Water and Oil on Apparently Healthy Wistar Albino Rats

In this study, the effects of the consumption of Cocos nucifera L. water and oil on the haematological parameters of apparently healthy wistar albino rats were investigated using standard methods. The albino rats (n= 100) were divided into 8 groups (A-H) of 12 rats each while the remaining four rats were put in another group to serve as control. The first four groups(A-D) were daily orogastrically administered different volumes of coconut oil, 0.5 ml, 1.0 ml, 1.5 ml, 2.0 ml respectively for 4 weeks while groups E-H were daily orogastrically administered different volumes of coconut water, 0.5 ml, 1.0 ml, 1.5 ml, 2.0 ml respectively for four weeks. The control rats (Group l) however were not administered either coconut water or coconut oil. All the rats were allowed free access to rat chow and water. The administration of either of the coconut water or oil caused a significant increase (p≤0.05) in the PCV, WBC and the differential leukocytes counts within the four weeks of this study with coconut water having higher effect. It is conceivable that the consumption of either coconut water or coconut oil could exert both hematinic and immuno-stimulatory effects in the consumers to checkmate low PCV and also boost innate immunity.

Please read full article : - www.journalaji.com
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Influence of Soil Arsenic Levels on Biomass Production and Relationship the Concentration of Arsenic between Rice Straw and Grain

Arsenic (As) contamination is widespread in Bangladesh. It can cause health hazards depending on consumption of foods grown on As contaminated soil. Two pot experiments were conducted at net house, Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur to study the effect of As on above ground biomass of different rice genotypes and to determine the relationship of As concentration between rice grains and straw. Sixteen rice genotypes were grown in pots soils having 0, 20, 40 and 60 mg/kg As both in winter and wet seasons. Soil As levels reduced above ground biomass of rice by 8-65%. Above ground biomass reduction was the least in BRRI dhan47 with variable soil As levels. Total As concentrations in straw and grains increased with increasing soil As levels. Moreover, the concentration of As in rice grain was also increased with greater As concentration in straw. Grain to straw ratio of As concentration was lower at higher As concentration in straw. It is indicated that reduced movement of As from rice straw to grain take place when straw As concentration was high.

Please read full article : - www.journalajsspn.com

October 25 2019

sciencedomaininternational

Study of the Output Electric Parameters of the Sub-cells Composing the Ga0.67In0.33P/GaAs/Ga0.70In0.30As Triple-Junction Photovoltaic Cell and its Performance in Real Environment:Cases of Bujumbura and Bugarama in Burundi

Multi-junction photovoltaic cells composed of III-V semiconductor materials are widely used in photovoltaic systems. They offer very high efficiencies compared to single-junction photovoltaic cells. Knowledge of the behavior of their electrical parameters in real operating conditions is essential for their best use. This work presents an analytical model for predicting the behavior of the output electrical parameters of the sub-cells composing the Ga0.67In0.33P/GaAs/Ga0.70In0.30 As triple junction photovoltaic cell, operating under the actual conditions of two selected sites. The dependence of the external quantum efficiency at the wavelengths corresponding to the absorption ranges of the top (Ga0.67In0.33P), middle (GaAs) and bottom (Ga0.70In0.30As)$$ sub-cells is analyzed and discussed. The influence of temperature and irradiation on the V oc ,J sc, F F and η parameters is discussed taking into account the meteorological characteristics of two selected locations. An average daily conversion efficiency of the Triple-Junction solar cell of 37.24% and a daily electrical power of 1613.1 W/m2 for the typical day(TD) of the sunniest month of the Bujumbura site were found. Similarly, under the same conditions, for the Bugarama site, we found an average daily efficiency of 37.28% and a daily electrical power of 1619.7 W/m2. The developed model can also be used to design a more suitable Photovoltaic system at any specified place, provided that local weather data is available.

Please read full article : - www.journalcjast.com
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Trend of Wearing Personal Protective Equipment by Dentists in Karachi, Pakistan

Objectives: To investigate the trend of wearing personal protective equipment by dentists in Karachi, Pakistan.

Methodology: Study was conducted over a period of three months in Karachi. Study included dentists working in Dental practices. Dental students and dentists not registered with Pakistan Medical and Dental Council were excluded from the study. The total filled questionnaires obtained were 251. Data analysis as done on SPSS version 20.0 and chi square test was used to assess difference amongst dentists.

Results: The trend of wearing personal protective equipment such as gloves, mask and protective eye wear showed statistically significant differences amongst dentists. More over disposal of sharp objects and disinfection of surfaces between patients also significantly varied amongst dentists working in different places.

Conclusions: Dentists working in different work places showed great variation in wearing personal protective equipment during dental procedures.

Please read full article : - www.journaljammr.com

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Monitoring Strategy of Chrome Electroplating Workers’ Health at Company XYZ

Consequetly, one million deaths from 14% of fatality due to occupational accidents caused harmful substances in the year 2015; therefore, it increases of more than 90000 workers when compared to 2011. Company XYZ with workers about 2500 people is a company that provides special electroplating (chrome plating) service to repair vessels within industry.

This study aims to recommend a strong policy that can be applied to monitor chrome plating workers’ health in Company XYZ. The method used in this study is a qualitative approach with analysis methods, strategic assumption surfacing and testing (SAST) and to obtain decisions about recommendations to be taken using the exponential comparison method (ECM). The results shows that the level of exposure of chromium on workers in company XYZ was at high risk level, which may affected worker’ health, 2 of 13 workers have a rate of chromium in blood 1.11ug/L and 1.10ug/L. Therefore the expert recommendation of the medical surveillance program for this research study; that all workers are required to do periodic medical assessment every 6 months, and the medical assessment for worker prior joining in the chrome plating project is must. In addition, focused medical assessment will include complete blood count, liver function, renal function, chromium serum in blood and urine, spirometry, chest x-ray, integument and respiratory system. Deep interview on medical and occupational history, such as the presence of chromium exposure in the past, current and anticipated future exposures are also required to support the data for evaluation purpose. The ability to use respirators assessment considers as additional assessment to protect the workers accordingly. The health practitioner will summarize all medical reports, discuss and provide recommendation to employee as well as to the employer.

Please read full article : - www.journaljesbs.com
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The Impact of Working Capital Management on Profitability of Global Haulage Company, Ghana

The study examines the impact of working capital management on profitability of Global Haulage Company Limited in Ghana. The service sector, which Global Haulage Company Limited forms part accounts for about 51% of national output and this show how vital the service sector has become in terms of job creation and gross domestic product growth in the Ghanaian economy. This study therefore employed the autoregressive distributed lag (ARDL) technique to examine the relationship between working capital management and profitability of firms in Ghana using Global Haulage Company Ltd as a case study with a period range of 1995 to 2013. The regression results showed that debt ratio, firm size and current assets to total assets ratio are negatively related to firm profitability whilst current liabilities to total assets ratio is positively related to firm profitability. The study therefore recommends that, management should use less of debt in financing their activities to be able to increase profit since high debt ratio adversely impact on profitability. Also, aggressive working capital policies should be pursued if management’s goal is to increase profit. In addition, policy makers should check and work on the managerial inefficiencies which are making the firm experience diseconomies of scale.

Please read full article : - www.journalajeba.com
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