Radiation Protection among Radiation Workers in Teaching Hospital.

Radiation protection entails the harmful effect of ionizing radiation, the interaction of any amount of ionizing radiation of any type, such as X-rays, gamma rays, electrons, protons, neutrons, alpha particles and beta particles with a biological system results in the absorption of the energy of the radiation by the system. This in turn may result in effects that become manifest in the exposed individuals (somatic effects) or appear in the descendant of exposed individuals (Genetic or Hereditary effects). The physics of the absorption process is over in 10-16 seconds, the chemistry takes longer, since the life time of the free radical is about 10-6 seconds, the biology takes days to months for cell killing, years for carcinogenesis, and generations for heredity damage. Available information on human susceptibility to effects of ionizing radiations has it that the lethal dose for 50% of the exposed population to die within thirty days of exposure is about three gray, for whole body exposure. Some organs and tissues are more sensitive to radiation and some are less. More sensitive tissues are blood forming organs, reproductive organs are those that constitute the nervous system. Death of a person may result from the overall exposure of the body for the destruction of vital organs. Acute exposure and chronic exposure at equal total doses may or may not produce the same effects

The Role of Principal in the Dispensation of Rewards to Teachers in Secondary Schools in Akwa Ibom State, Nigeria

This study examined the role of principal in the dispensation of reward in secondary schools system in Nigeria. It is the contention of the study, that reward is one of the ways in which principal exercise his authority on the teacher. In rewarding to teachers in secondary schools in Akwa Ibom State of Nigeria. Three null hypotheses were formulated to guide the study. A sample size of 451 participants was drawn using stratified random sampling technique. Two researcher’s made instruments were used for data collection. The three null hypotheses tested at .05 alpha level using analysis of variance (ANOVA). Findings arising from hypotheses testing indicates that principal dispensation of reward to teachers significantly influence teachers commitment to work. It was recommended among others that reward should served to build better employment deal, and to increase teacher’s commitment to work in one’s school, to enhance their productivity. Keywords: rewards, role, needs, performanc

Factor Affecting Profitability: Evidence of Animal Feed Sub Sector in Indonesia from Year (2016-2017)

It is the purpose of every company to gain profit, however, in 2015 there is an indication that economy is slowing down that affecting the whole word including animal feed subsector companies in Indonesia which beg the question what is the condition of the company in the succeeding in 2016 and 2017. This study aims to analyze the factor affecting the profitability of animal feed companies listed Indonesian Stock Exchange. The study is quantitative using four companies listed at animal feed sub-sector listed from the year 2016-2017 at Indonesian Stock Exchange. The method used in this research is descriptive method, using Current Ratio for liquidity and Debt to Asset from solvability and Return on asset for profitability ratio of animal feed four companies namely, Charoen Pokphand Indonesia Tbk (CPIN), Japfa Comfeed Indonesia Tbk (JPFA), Malindo Feedmill Tbk (MAIN), and Sierra Produce Tbk (SIPD). Data analysis is done using descriptive analysis, significance test, correlation test, and regression analysis. The results showed that in terms of descriptive statistic animal feed companies has a good level of liquidity above 1 and have a debt level above the set standard of 30%. In terms of profitability, animal feed companies have good average financial ratio meaning that companies utilize assets owned efficiently to obtain profit maximally. However, the result shows that there is no significant relationship between solvability and liquidity toward profitability at animal feed companies form the year 2016-2017 at 5% and 10% significant level. Thus, the study suggests for future study to expand the sample of the study in term of year of sample and similar companies in different countries or regio

On the Robustness of Democratic Electoral Processes to Computational Propaganda

There is growing evidence of systematic attempts to influence democratic elections by controlled and digitally organized dissemination of fake news. This raises the question of the intrinsic robustness of democratic electoral processes against external influences. Particularly interesting is to identify the social characteristics of a voter population that renders it more resilient against opinion manipulation. Equally important is to determine which of the existing democratic electoral systems is more robust to external influences. Here we construct a mathematical electoral model to address these two questions. We find that electorates are more resilient against opinion manipulations (i) if they are less polarized and (ii) when voters interact more with each other, regardless of their opinion differences, and that (iii) electoral systems based on proportional representation are generally the most robust. Our model qualitatively captures the volatility of the US House of Representatives elections. We take this as a solid validation of our approach.Comment: Main text: 26 pages, 6 figures. Supplementary information: 14 pages, 9 figure

In-vivo antitrypanosomal effect and in-silico prediction of chronic toxicity of N-methylholaphyllamine in rats

Purpose: To determine the in-vivo anti-trypanosomal effect and sub-chronic toxicity of Nmethylholaphyllamine (MHA) isolated from H. africana against Trypanosoma brucei in rats and also to predict its toxicity by an in-silico method. Methods: Parasitemia was induced in rats with 1.5 x 105/mL trypanosomes and treatment commenced 5 days post-infection for 12 days. The rats were treated with MHA (3.5 μM/rat) for 5 days and with diminazene (3.5 mg/kg) for 2 days and were monitored every other day during and after treatment for the level of parasitemia and PCV. The chronic toxicity study was carried out with a 28-day sub-chronic toxicity cycle protocol while the toxicity was predicted in-silico with ProTox-II which is freely available on a web server. Results: MHA exhibited anti-trypanosomal effect in infected rats leading to the restoration of PCV to baseline values (≥ 40 %) on the 14th day and consequent disappearance of parasitemia on day 17 post-infection with no relapse. The slight changes in clinical observation, weight, feed consumption, clinical and histopathology of high-dose MHA rats were not significant (p < 0.05) and were not attributed to the treatment. Apart from MHA-induced immunotoxicity observed in in-silico prediction, no other predicted toxicities were significant; however, few undetected toxicities were found to be mediated by amine oxidase A, androgen and/or histamine, H1 receptors toxicophore fit. Conclusion: The high in-vivo antitrypanosomal effect and non-toxicity of MHA in this study further provide useful empirical data for lead optimization of MHA to combat sleeping sickness

Accessibility of Federally Funded Family Planning Services in South Carolina and Alabama

This study operationalized the five dimensions of health care access in the context of contraceptive service provision and used this framework to examine access to contraceptive care at health department (HD) (Title X funded) and federally qualified health center (FQHC) (primarily non-Title X funded) clinics in South Carolina and Alabama. A cross-sectional survey was conducted in 2017/18 that assessed clinic-level characteristics, policies, and practices related to contraceptive provision. Provision of different contraceptive methods was examined between clinic types. Survey items were mapped to the dimensions of access and internal consistency for each scale was tested with Cronbach\u27s alpha. Scores of access were developed and differences by clinic type were evaluated with an independent t-test. The overall response rate was 68.3% and the sample included 235 clinics. HDs (96.9%) were significantly more likely to provide IUDs and/or Impants on-site than FQHCs (37.4%) (P \u3c 0.0001). Scales with the highest consistency were Availability: Clinical Policy (24 items) (alpha = 0.892) and Acceptability (43 items) (alpha = 0.834). HDs had higher access scores than FQHCs for the Availability: Clinical Policy scale (0.58, 95% CL 0.55, 0.61) vs (0.29, 95% CL 0.25, 0.33) and Affordability: Administrative Policy scale (0.86, 95% CL 0.83, 0.90) vs (0.47, 95% CL 0.41, 0.53). FQHCs had higher access scores than HDs for Affordability: Insurance Policy (0.78, 95% CL 0.72, 0.84) vs (0.56, 95% CL 0.53, 0.59). These findings highlight strengths and gaps in contraceptive care access. Future studies must examine the impact of each dimension of access on clinic-level contraceptive utilization

The Influence of Mothers’ Occupations on Children’s Upbringing: A Survey Research

This study investigated the influence of mothers' occupation on children's upbringing in the Udenu Local Government Area in Enugu State. Specifically, the study aimed to determine the feeding, clothing, academic, and health practices adopted by mothers in Enugu State. The study utilized a survey research design, focusing on the Udenu Local Government Area. A sample of three hundred respondents was used, and data was collected through questionnaires. The instrument was face validated by experts from the Department of Home Economics and Hospitality Management Education at the University of Nigeria Nsukka. To ensure reliability, a trial testing was conducted, resulting in a Cronbach alpha reliability estimate of 0.87. Data analysis involved frequency count and percentages. The findings revealed limited mother care in terms of children's feeding, clothing, health, and academic upbringing, which was attributed to the negative influence of the mothers' occupation. Recommendations were made to enhance children's upbringing, including an increase in maternity leave to allow mothers to spend quality time with their children

The Effect of Aqueous Leave Extract of Nicotiana Tabacum (Tobacco) On Some Reproductive Parameters and Micro-Anatomical Architecture Of The Testis In Male Albino Wistar Rats

The tobacco plant (Nicotiana tabacum) has been in used for several years irrespective of the location of human races. Tobacco is used in different ways but cigarettes constitute the largest share of manufactured tobacco products in the world, accounting for 96% of total sales. The present study was undertaken to investigate the effect of aqueous extract of Nicotiana tabacum leaves on some reproductive parameters. 20 male young wistar rats weighing between 160 to 190g were used for the study. The extract was administered orogastrically in doses of 30, 20 and 10mg/kg body weight per day in 0.5ml of distilled water for 21 days and the control group was given equal volume of distilled water as well. The results showed that at the dose of 20 and 30mg/kg the extract decreased significantly the percentage motility (P<0.01) and (P<0.001) to 21.8±1.0 and 15.6±0.8 respectively, while the sperm concentration was significantly decreased (P<0.01) to 55.7x 106±2038480 at the dose of 30mg/kg. The testicular histology showed decrease spermatogonic cells at doses of 20mg/kg and 30mg/kg respectively. It is concluded that nicotine could adversely affect fertility by sperm count, motility and testicular spermatogenesis in a dose- and time-dependent manner. Keywords Nicotiana tabacum, reproductive parameters, testicular histolog