ADOLESCENTS KNOWLEDGE OF SEX EDUCATION AND MORAL SEXUAL BEHAVIOUR IN ADO-EKITI, EKITI STATE, NIGERIA

The study investigated adolescents’ knowledge of sex education and their moral sexual attitude in Ado Ekiti. Specifically, it investigated adolescents knowledge about sex education, identified the risk associated with sexual activity among adolescents, examined the attitude of adolescents toward sex education, determined the importance of sex education and how it can influence the moral sexual behaviour of adolescents’ in Nigeria. The research design adopted for the study was descriptive design of the survey type. The sample consisted of 200 adolescent students. Multistage sampling procedure was used to select sample for the study. The instrument used for the study was a questionnaire designed by the researchers. The face and content validity was ascertained through experts in Psychology, Test, Measurement and Evaluation, while test-retest method was used to ensure the reliability which yielded reliability coefficient of 0.89. The data collected were analyzed using inferential statistics of t-test. All hypotheses were tested at 0.05 level of significance. The result shows that it is important to impact knowledge about sex education on adolescents. From the study, it was evident that knowledge of sex education affects the level of morality among youths. The rapid change in body proportion excites the youths and encourages them to implore pornographic behaviours which invariably affect their moral thinking by engaging in fantasy. Conclusively, sex education should be part of school curriculum in order to educate adolescent. Parents should develop effective communication skill with their children, make friends with them and have positive attitudes toward sex.  Article visualizations

A Reexamination of Amino Acids in Lunar Soils: Implications for the Survival of Exogenous Organic Material During Impact Delivery

Using a sensitive high performance liquid chromatography technique, we have analyzed both the hot water extract and the acid hydrolyzed hot water extract of lunar soil collected during the Apollo 17 mission. Both free amino acids and those derived from acid labile precursors are present at a level of roughly 15 ppb. Based on the D/L amino acid ratios, the free alanine and aspartic acid observed in the hot water extract can be entirely attributed to terrestrial biogenic contamination. However, in the acid labile fraction, precursors which yield amino acids are apparently present in the lunar soil. The amino acid distribution suggests that the precursor is probably solar wind implanted HCN. We have evaluated our results with regard to the meteoritic input of intact organic compounds to the moon based on an upper limit of less than or equal to 0.3 ppb for alpha-aminoisobutyric acid, a non-protein amino acid which does not generally occur in terrestrial organisms and which is not a major amino acid produced from HCN, but which is a predominant amino acid in many carbonaceous chondrites. We find that the survival of exogenous organic compounds during lunar impact is less than or equal to 0.8%. This result represents an example of minimum organic impact survivability. This is an important first step toward a better understanding of similar processes on Earth and on Mars, and their possible contribution to the budget of prebiotic organic compounds on the primitive Earth

Free proline, soluble sugars and soluble proteins concentration as affected by salt stress in two sugarcane (Saccharum sp.) cultivars differing in their salt tolerance

Salt stress is one of the environmental stresses which affect negatively the agricultural production of the world. In this study, the effects of salt stress on free proline, soluble sugars and soluble proteins accumulation were investigated in two sugarcane (Saccharum sp.) cultivars: CP66-346 (salt- tolerant) and CP65-357 (salt-sensitive). Young plants of these cultivars were exposed, in a hydroponic system, to four concentrations of NaCl (0, 17, 34 and 68 mM). These concentrations correspond to an electric conductivity of 1; 2.83; 4.26 and 6.63 mS/cm, respectively. Free proline, soluble sugars and proteins accumulation were quantified after 2 weeks of stress. Proline and soluble sugars concentrations increased significantly in leaves and roots under salinity. Furthermore, NaCl caused an increase in soluble proteins concentration in leaves and roots of the tolerant cultivar CP66-346 and a decrease in leaves and roots of the sensitive CP65-357. Salttolerant CP66-346 plants accumulated more soluble sugars in leaves than CP65-357, while both cultivars accumulated similar quantities of proline in leaves. These results provided evidence that soluble sugars could contribute mainly to counteract the negative water potential of the outside medium and that protein synthesis stimulation was implicated in sugarcane salt tolerance. Proline appeared as a symptom in salt-stressed sugarcane plants rather than as an indicator of tolerance.Keywords: Sugarcane, Saccharum sp., proline, soluble sugars, soluble proteins, salt-toleranc

POTABILITY AND IRRIGATION POTENTIAL OF GROUNDWATER SOURCES AT THE FEDERAL UNIVERSITY OF AGRICULTURE, ABEOKUTA, NIGERIA

Groundwater is an important source of freshwater and its quality determines it’s potential for domestic and agricultural use. Water samples from ten boreholes located within the Federal University of Agriculture Abeokuta, Nigeria were collected and analysed for physico-chemical and bacteriological properties, cations and metals using standard procedures. Results were compared with the regulatory standards while water quality index (WQI) method was used to classify the water potability. Potential of groundwater for irrigation was investigated using appropriate indices. The range of values for the measured parameters include: pH: 6.9 – 7.82; electrical conductivity(EC): 127 – 650 μS/cm; total dissolved solids (TDS): 58 to 284 mg/L; magnesium (Mg2+): 10 - 61 mg/L; nitrates (NO3-): 0.01 – 1.38 mg/L; iron (Fe): 0.02 – 0.05 mg/L; biological oxygen demand (BOD): 0.1 – 2.83 mg/L and total coliform: ND - 28×10cfu/mL. Majority of the water quality parameters fell within regulatory limits with the exception of magnesium and total coliforms. Escherichia coli, an indicator of faecal contamination was also absent in the water samples. On the average, groundwater within the study area has a WQI = 46.3 and can be classified to be of good quality for domestic use.  Sodium absorption ratio (SAR) was less than 10% and Magnesium adsorption ratio (MAR) was less 50 %, and are therefore classified as of excellent quality for irrigation purpose. Soluble sodium percentage (SSP) values range between 11.1 and 51 %. All samples were found to be good or fair for irrigation purpose with no harmful effects to the soil.     &nbsp

Complete homochirality induced by the nonlinear autocatalysis and recycling

A nonlinear autocatalysis of a chiral substance is shown to achieve homochirality in a closed system, if the back-reaction is included. Asymmetry in the concentration of two enantiomers or the enantiometric excess increases due to the nonlinear autocatalysis. Furthermore, when the back-reaction is taken into account, the reactant supplied by the decomposition of the enantiomers is recycled to produce more and more the dominant one, and eventually the homochirality is established.Comment: 4 pages, 2 figure

A Search for Extraterrestrial Amino Acids in Polar Ice: A Progress Report

Fifteen polar ice samples-fourteen from Greenland and one from Antarctica-have been analyzed for the extraterrestrial amino acid alpha-aminoisobutyric acid (AIB) in an effort to estimate the flux of interplanetary organic material to the Earth's surface. Only one sample (Greenland GISP II, 4270-4440 years old) contains detectable amounts of AIB, apparently the signature of a transient delivery event. The maximum oceanic concentration of AIB from such an event would be less than 10(exp-9) M

Get my pizza right: Repairing missing is-a relations in ALC ontologies (extended version)

With the increased use of ontologies in semantically-enabled applications, the issue of debugging defects in ontologies has become increasingly important. These defects can lead to wrong or incomplete results for the applications. Debugging consists of the phases of detection and repairing. In this paper we focus on the repairing phase of a particular kind of defects, i.e. the missing relations in the is-a hierarchy. Previous work has dealt with the case of taxonomies. In this work we extend the scope to deal with ALC ontologies that can be represented using acyclic terminologies. We present algorithms and discuss a system

Homochiral growth through enantiomeric cross-inhibition

The stability and conservation properties of a recently proposed polymerization model are studied. The achiral (racemic) solution is linearly unstable once the relevant control parameter (here the fidelity of the catalyst) exceeds a critical value. The growth rate is calculated for different fidelity parameters and cross-inhibition rates. A chirality parameter is defined and shown to be conserved by the nonlinear terms of the model. Finally, a truncated version of the model is used to derive a set of two ordinary differential equations and it is argued that these equations are more realistic than those used in earlier models of that form.Comment: 20 pages, 6 figures, Orig. Life Evol. Biosph. (accepted

EDUCATIONAL FACTORS AS DETERMINANT OF INTERNATIONAL RESERVES ACCUMULATION IN ORGANISATION OF PETROLEUM EXPORTING COUNTRIES

There has been tepid growth of international reserves in OPEC economies despite huge chunks of oil revenue with high developmental needs. This study investigated the influence of educational factors using various levels of literacy in stimulating macroeconomic determinants of international reserves in OPEC member states with data between 2008 and 2018 obtained from World Bank Development Indicators across 15 member states. The study employed dynamic panel model and analysed the data using System of Generalised Method of Moment (SGMM). The findings show that educational levels, such as, adult, youth literacy, tertiary school and secondary school enrolment mitigate the adverse effect of exchange rate and stimulate the effect of crude oil prices while tertiary enrolment stimulate the effect of foreign direct investment and reduce the adverse effect of economic crises. In all, youth literacy was most impactful for these economies while economic crises were significantly positive at all levels as a primary determinant of international reserve accumulation. It was therefore concluded that educational enhance the economy to accumulate more reserves. The study recommended among others that national governments should ensure adequate funding is channelled to educational sector to improve the quality of education at institutions youth and secondary education levels in order to harness adequate knowledge and skills to enhance the efficiency of foreign investments