Archives-May 2018

This study examined the effect of gender and teaching strategies on chemistry students’ achievement in organic compounds nomenclature in EMOLGA of Rivers State, Nigeria. Used in the study was pretest, post test non equivalent control group quasi- experimental design. One hundred and seventy-five (96 males and 79 females) SSS II Chemistry students were drawn from three secondary schools in EMOLGA of Rivers State. Six research questions were answered, while six hypotheses were tested at 0.05 level of significance. The instrument for data collection was a 50-item Organic Chemistry Nomenclature Achievement Test (OCNAT) developed by the researcher. Students were divided into two experimental groups and a control group. The experimental groups were subjected to treatment using thinking-aloud and self assessment metacognitive strategies, while the control group was taught using the discussion strategy. Mean and SD were used to answer the research questions while t-test statistics and ANCOVA were used to analyze the hypotheses. The findings showed that there is significant difference in the achievement of chemistry students in organic compounds nomenclature when taught with metacognitive teaching strategies. However, self assessment was the best strategy for teaching organic compounds nomenclature the study reveals. The findings also revealed that there is no interaction effect between gender and teaching strategies. The study concluded that metacognitive teaching strategies such as thinking-aloud and self assessment have been identified in this study as innovative teaching strategies that could be adopted in effective teaching of organic compounds nomenclature. In addition self assessment model of metacognitive teaching strategy was found to have superior impact on students’ achievement in organic compounds nomenclature and thus is advocated for use in our secondary schools.

Heavy metals concentration was studied in tilapia fishes (Oreochromis niloticus) from New Calabar river (Station 1), Elechi creek (Station 2), Woji creek (Station 3) in Port Harcourt, Nigeria using Atomic spectrophotometer. From the results obtained, Zinc showed concentration of 8.38mg/kg, 7.31mg/kg and 9.32mg/kg in the three stations respectively which do not exceed the WHO regulatory limit of 30.0mg/kg. Nickel concentration in the tilapia fish in Station I (0.55mg/kg), exceeded the regulatory limit of 0.5mg/kg, while fishes from Station II and III had 0.43mg/kg and 0.37mg/kg respectively. Cadmium and Chromium were not detected in the fish from three different Stations. Iron was highest with concentration of 54.17mg/kg, 50.10mg/kg, and 35.30mg/kg in the different stations respectively and were lower than WHO regulatory limit of 100.0 mg/kg .Lead showed the lowest concentration of heavy metals in the different stations and were also lower than the WHO regulatory limit of 5.0mg/kg. There was high concentration of (Iron) Fe in the fish species from the three stations while high concentration of Nickel was also observed from species from Station I. Following the high concentrations of metals in these stations, it’s imperative therefore that adequate measures should be put in place to reduce activities related to heavy metal contamination to avoid futuristic adverse effects. Finally, Oreochromis niloticus may perhaps be a good indicator to monitor heavy metal contamination in the waterbody.

The impacts of organic wastes contamination on microbial population and physicochemical properties of Woji creek in Port Harcourt Rivers State were studied for two years. Surface water samples were collected monthly for a duration of two year at five sampling points using standard methods. The samples were subjected to microbiological analysis based on total heterotrophic bacteria count and those of hydrocarbon utilizing bacteria, hydrocarbon utilizing fungi, total coliform and total fungi. Physicochemical properties evaluated include: temperature, pH, turbidity, total dissolved solid, total suspended solid, dissolved oxygen, BOD, COD, total organic carbon. Results of microbiological analysis showed no significant difference between seasons. THBC values ranged from 1.98x105 to 2.59x108cfu/ml, while TFC values was higher in the wet season (1.55x104 ± 5.46x103cfu/ml) than in the dry season (5.63x103 ± 2.55x103cfu/ml). Temperature range was found to be significantly higher in the dry season (27.92±0.210C) than in the wet season (25.81±0.210C). The findings of this study indicate that organic wastes are the major factors responsible for deterioration of the Woji creek.

The problem of generating epsilon of room is drawing the attention of the reliability analyst. Amongst those approaches, the characterization approach and the modelling approach are very appealing. In fact characterization approach is of interest to both theoreticians and applied workers. Here we have created an epsilon of room for application through characterization approach. In our application we have considered days of Menstrual Cycle with Melatonin hormone as variable compared with both control group and experimental group as women stress effects. Here we have used epsilon room (soft analysis) in the pineal gland. We have further discussed the main important point for saving energy to fight with the stress effects. The Hormones like Melatonin in the night time will be regulated as Melatonin is the night hormone which secretes in the pineal gland. If it secretes uniformly all other hormones like serotonin will be regulated in the day time.

The association between atrial fibrillation and left atrial thrombus had been widely described; on the contrary, the relation between atrial fibrillation and right atrial thrombus hasn’t been demonstrated. We always thought that right atrial thrombus originated from deep venous thrombosis and named as “emboli in transit”. We report the case of a 91 year-old male patient, presenting with a permanent atrial fibrillation, his echocardiography showed a huge floating right atrial thrombus complicated with a bilateral pulmonary embolism. Our aim is to demonstrate through this case the association between atrial fibrillation and right atrial thrombus, using our findings in the literature, and comparing between the prevalence of right and left atrial thrombi in association with atrial fibrillation, explaining the difference between the both, and discussing therapeutic options.

The paper considers the problem of designing ESP curriculum for postgraduate students. The role and potential of ESP teaching has a state meaning for Ukraine and many other countries. The key point in ESP teaching is curriculum design. To design a curriculum, the paper determines the postgraduate students’ needs and formulates certain objectives and tasks for postgraduate ESP study. Four content modules are elaborated involving language materials and four types of speech activity.

According to WHO maternal and child health services can be defined as promoting, preventing, therapeutic or rehabilitation facility or care for the mother and child. In India and developing world, many women suffer from complications during pregnancy and delivery care. Utilization of maternal and child care services during pregnancy and delivery care will helps in reducing the mortality and morbidity of mother and her child. An effort has been made in this study to assess the maternal and child health care services utilization among the women. Third round of National Family Health Survey (NFHS-III) has been used in this study. The study selected 32,222 women age 15-49 who had at least one birth in five year prior to the survey. Empowered Action Group states and Assam has been selected to carry-out this study. In this study we illustrate the Andersen’s Behavioural Model of Health Care Utilization. The model describes factors that inhibit or facilitate access to health care, and how these factors are applied in the process of seeking and using health services. The result showed that only 19% of the women delivery takes place in health facilities while 31.7% received assistance during delivery from skilled provider in EAG states and Assam. Utilization of maternal health services was significantly low among rural women as compared to their urban counterparts. Result also showed that the educational status of the mother, household wealth quintile is found to be strong indicators of utilization of maternal health care services. 

The effect of penstock diameter on shaft power was studied as part of an ongoing development of a simplified pico-hydropower system with water recycling. The speeds of the turbine and alternator shafts and volume of water displaced were measured for each penstock diameter and nozzle area ratio. The shaft power, flow rate and efficiency of the turbine were computed. The mean efficiencies were 0.776 and 0.510 for penstocks diameters 0.0762 and 0.0381 m respectively. Hence, larger penstock diameters with small nozzle area ratios favor optimal system operation. The results show that the system can potentially impact Nigeria’s energy mix positively

This paper presents the predicament of two generations of the immigrants in the novel The Namesake by Jhumpa Lahiri. It portrays how in the immigration and collision of cultures struggle comes out for the motherhood. It explores various problems in the identity building for the first and the second generations of the immigrants.

As the demand increases for day-day applications, rapid transfer of high amount of data over high speed networks must be required also Bandwidth must be high enough for these applications. Congestion Control is an important subject relevant to these applications to maintain stability for any kind of network. In this paper, review on various congestion control mechanisms and their performance measurement parameters are to be compare with each other. Active Queue Management is one of the method to get control over congestion by dropping packets from buffer queue as an indication to other end node to slow down transfer of packets.