Environmental Effects of Abandoned Properties in Ogbomoso and Osogbo, Nigeria

This study appraises the effects of landed property abandonment in Osogbo and Ogbomoso. Information on each of the observed effects was obtained through the administration of 658 structured questionnaires (304 and 354 for Ogbomosho and Osogbo respectively) to 25 sampled blocks from each city, sampling 20 respondents from each block. Case records from hospitals and police stations in the study area were also analyzed in the study. All observed environmental effects were ranked with N par and Kruskal-walis test. ANOVA and chi-square test were used to explain the variation in the incidence of environmental effects among the residential densities. Correlation analysis was also used to explain the relationship between the incidence of abandonment and variables of environmental problems. Effects observed include pollution, health problem, city’s financial loss, obscenity, crime, property value decline, development control problem, wastage of resources, dangerous reptiles, accident and vagrancy. The brunt of abandonment is found to be more in the medium residential density. The study thus recommends an aggressive environmental management that offsets blighted conditions in the environment.Keywords: Effects, Buildings, Lots, Abandonment, Landed Properties, Environmen

DEVELOPMENT OF IMPROVED SOLID HOSPITAL WASTE MANAGEMENT PRACTICES IN A NIGERIAN TERTIARY HOSPITAL

A pre-intervention situation analysis was conducted to assess Hospital Waste Management (HWM) practices, solutions were proffered for the observed inadequacies and advocacy was made to Hospital administration for which a number of interventional measures were instituted. A post interventional survey was conducted to identify the improvements in HWM and identify areas needing further attention using a structured questionnaire to collect 300 viable samples. Overall outcome includes introduction of HWM plan, establishment of Environmental unit, procurement of waste segregation practices, double chambered incinerator while evaluation of medical and health workers’ knowledge and practices showed that 144(48%) express satisfaction with HWM.  The profession of respondents has significant effect on the knowledge about HWM while the educational qualification was not independently associated with level of satisfaction and use of personal protective equipments while handling medical waste at p=0.05. It was therefore concluded that continuous training/ capacity development and provision of waste management materials remain essential for consolidating the gains made on HWM. http://dx.doi.org/10.4314/njt.v35i3.2

Free Radical Attack on Membrane Lipid and Antioxidant Vitamins in the Course of Pre-Eclamptic Pregnancy

Background: Despite the volume of knowledge and daily reports on pre-eclampsia, its pathogenesis is still yet to be ascertained. Oxidative stress (oxidant (free radical) in excess of antioxidant) injury is one of the recently suggested pathogenetic mechanisms. This study, however, was designed to determine second and third trimesters of plasma malondialdehyde (product of free radical attack on membrane lipid) and vitamins C and E in pre-eclamptic Nigerian women.Subjects and methods: A Total of 100 subjects, each for pre-eclamptic, apparently normal and non-pregnant women qualified for the study. Venous blood samples were taken in the second and third trimesters of pregnancy and at the point of contact for non-pregnant women. Variables were analyzed using SPSS version 16, taking level of significance to be 0.05.Results: Plasma malondialdehyde in the third trimester of normal pregnancy (2.03±0.71μmol/l) was found to be significantly higher than the one in the second trimester (1.65±0.62μmol/l) (p<0.0001). For pre-eclamptic subjects, the malondialdehyde in the third trimester (3.13±0.61μmol/l) was also higher than the malondialdehyde in the second trimester (3.00±1.21μmol/l).The mean vitamin C values for subjects with normal pregnancy were similar in the second and third trimesters (38.25±19.66 vs. 38.66±19.40; p=0.882). For subjects with pre-eclampsia, the mean Vit C values were also similar in the 2nd and 3rd trimesters (35.05±18.37 vs. 37.20±24.44μmol/l;p=0.175).Mean vitamin E values in the second and third trimesters were also similar for subjects with normal pregnancy (28.62±13.85 vs. 28.50±13.35μmol/l;p=0.950). A similar finding was observed in pre-eclamptic subjects (25.09±12.79 vs. 28.00±14.83μmol/l;p=0.067).Conclusion: There was an increased product of membrane lipid attack (malondialdehyde) with no change in plasma levels of vitamins C and E as pregnancy advances into the third trimester of both normal and pre-eclamptic pregnancies. Antioxidant vitamins may not be useful in stopping the progression of free radical attack on membrane lipid to control pre-eclampsia.Keywords: Lipid peroxidation, Malondiadehyde, Free radical, Pre-eclampsia, Trimester, Vitamin

Intestinal Helminthiasis among School Children in Ilie, Osun State, Southwest, Nigeria

A cross sectional study of intestinal helminthiasis among school pupils was undertaken in three primary schools in Ilie in Olorunda Local Government Area of Osun state in order to determine the prevalence and intensity of helminthic infections. The relationship between intestinal helminths and anthropometric indices and the factors that could favour the infection were also studied. Faecal samples from three hundred and four (304) randomly selected out of the four hundred and seven (407) school children in the study area were collected and analysed with the semi-quantitative Kato Katz technique and concentrated method. The intensity of infection was classified into light, moderate or high according to World Health Organisation (WHO) thresholds. The overall prevalence rate was 52.0% while five species of intestinal helminths were identified. Ascaris lumbricoides (36.2%) was the most common, followed by Hookworm (10.5%), Schistosoma mansoni (4%), Strongyloides stercoralis (0.7%) and Hymenolepis nana (0.7%). Multiple helminthic infection were recorded with Ascaris –Hookworm (6.58%) having the highest prevalence among the children. Female (56.6%) were more infected than male (46.4%) and the difference was statistically significant (P=0.0019). Seventeen percent (17%) of the children were below the third percentile for weight (wasted) while fourteen percent (14%) were below the third percentile for height (stunted). There was a relationship between intensity of infection and wasting since there were fewer underweight pupils (13%) with normal stool than those moderately infected (35%) (

Translation and psychometric evaluation of the Yoruba version of the STarT Back tool among persons with longterm non-specific low-back pain

Background. Translating questionnaires into local languages is essential as it aids easy accessibility and understanding of such questionnaires by patients and their health caregivers. The STarT Back Tool (SBT), validated tool used to classify subgroups of persons with Low-Back Pain, has few translated versions. We translated the STarT Back Tool into the Yoruba language and established its psychometric properties among patients with long-term non-specific Low-Back Pain. Methods. Following the Lenz protocol, the SBT was successfully cross-culturally adapted into the Yoruba language. One hundred consenting patients (mean age = 57.0±11.43 years, 55% females) took part in the validation phase, while 53 of them participated in the test-retest phase. Psychometric indices of the Y-SBT assessed showed internal consistency, intraclass correlation coefficient (ICC), ceiling and floor effects and divergent validity. Results. The sub and total Cronbach’s α score for Y-SBT was 0.704 and 0.857, respectively. The test-retest reliability of the sub and total scores of the Y-SBT yielded an ICC of 0.82 (95% CI: 0.74 - 0.87) and 0.89 (95% CI: 0.84 - 0.93), respectively. The divergent validity for sub and total-scores of the Y-SBT based on Quadruple Visual Analogue Scale score for on-going pain was r = 0.374 (p = 0.001) and r = 0.432 (p = 0.001), respectively. The Y-SBT had no ceiling or floor effects. Conclusion. The Y-SBT have acceptable psychometric properties. It is recommended for use among Yorub speaking patients with LB

Directionally accelerated detection of an unknown second reactor with antineutrinos for mid-field nonproliferation monitoring

When monitoring a reactor site for nuclear nonproliferation purposes, the presence of an unknown or hidden nuclear reactor could be obscured by the activities of a known reactor of much greater power nearby. Thus when monitoring reactor activities by the observation of antineutrino emissions, one must discriminate known background reactor fluxes from possible unknown reactor signals under investigation. To quantify this discrimination, we find the confidence to reject the (null) hypothesis of a single proximal reactor, by exploiting directional antineutrino signals in the presence of a second, unknown reactor. In particular, we simulate the inverse beta decay (IBD) response of a detector filled with a 1 kT fiducial mass of Gadolinium-doped liquid scintillator in mineral oil. We base the detector geometry on that of WATCHMAN, an upcoming antineutrino monitoring experiment soon to be deployed at the Boulby mine in the United Kingdom whose design and deployment will be detailed in a forthcoming white paper. From this simulation, we construct an analytical model of the IBD event distribution for the case of one 4 GWt±2% reactor 25 km away from the detector site, and for an additional, unknown, 35 MWt reactor 3 to 5 km away. The effects of natural-background rejection cuts are approximated. Applying the model, we predict 3σ confidence to detect the presence of an unknown reactor within five weeks, at standoffs of 3 km or nearer. For more distant unknown reactors, the 3σ detection time increases significantly. However, the relative significance of directional sensitivity also increases, providing up to an eight week speedup to detect an unknown reactor at 5 km away. Therefore, directionally sensitive antineutrino monitoring can accelerate the mid-field detection of unknown reactors whose operation might otherwise be masked by more powerful reactors in the vicinity

Prevalence of malaria among the nomadic Fulani in Osun state, southwest Nigeria

The objective of this study was to determine the prevalence of malaria among the nomadic Fulani in Osun state, Nigeria. In this study, 102 blood samples were collected from male and female nomads and assayed by Giemsa staining of thick and thin blood film for detection and identification of plasmodium species and parasitaemia count for determination of parasitaemia load. Malaria prevalence was 55.9%. All infection was diagnosed as Plasmodium falciparum infection. Malaria prevalence was high in children, while location, age, sex, the use of bed net and the type of prophylaxis and therapeutic drugs used had no significant influence on prevalence.Keywords: Malaria, Plasmodium falciparum, nomadic Fulani, Nigeria International Journal of Natural and Applied Sciences, 6(2): 223-227, 201

Fast neutron activation of ubiquitous materials

Nuclear explosions expose ubiquitous materials to large numbers of neutrons, producing a variety of radioactive isotopes. To simulate such phenomena from both fission and thermonuclear explosions, we irradiated 29 different targets with approximately 3 and 14 MeV neutrons and measured the beta-delayed gamma rays using germanium detectors. For each neutron energy, the expected radioisotopes, half-lives, and gamma ray energies were deduced. From measurements of the ratios of activities of the radionuclides produced by neutron irradiations, we were able to identify several materials that are particularly sensitive to the neutron energy spectra