PENERAPAN MODEL PEMBELAJARAN TIPE PICTURE AND PICTURE DALAM MENINGKATKAN HASIL BELAJAR DI KELAS VIII SMP NEGERI 2 PEULIMBANG

Banda Ace

Inhibitive effect of ferrous gluconate on the electrochemical corrosion of aluminium alloy in H2SO4 solution

The use of ferrous gluconate as corrosion inhibitor on aluminium alloy in 0.5M H2SO4 solution was studied using gravimetric and potentiodynamic polarization measurements. The surface morphology of the aluminium alloy was studied after exposure to 0.5 M H2SO4 solution in the presence and absence of inhibitor using high resolution scanning electron microscopy equipped with energy dispersive spectroscopy (HRSEM – EDS). The adsorption behaviour of the inhibitor was investigated. The results of the investigation show that increase in concentration of ferrous gluconate corresponds to an improvement on inhibition efficiency. Equally, the results showed the ferrous gluconate to be an effective corrosion inhibitor for the aluminium in the acidic medium. The results obtained from the two methods used were found to correlate with each other

UNE EXPOSITION DE LA VIOLENCE CONJUGALE CONTRE LES HOMMES DANS VERRE CASSÉ D’ALAIN MABANCKOU.

La société doit être une place où les gens sont protégés contre  la violence conjugale, que ce soit la violence contre  les femmes ou contre les hommes.  Mais la société de nos jours  sous  l’influence du mouvement féministe débarrasse  la violence contre les hommes ce qui causeun déséquilibre  de justice contre les hommes. Ce travail  analyse le roman Verre cassé d’Alain Mabanckou  en utilisant l’approche réaliste pour  identifier et exposer  les violences et leurs effets que les hommes subissent en mariage. L’étude montre que les victimes masculins de la violence conjugale sont moins considérés,  et défavorisés dans la justice et au publique. C’est ainsi que cette recherche fait appel aux individus, organisations non-gouvernementales et aux gouvernements pour qu’ils combattent le problème de la violence contre les hommes et pour sensibiliser la société à l’égard de la gente masculine opprimée par la femme. &nbsp

Collaborative and Adaptive Framework for Telediagnosis and Prescriptions in Herbal Medicine

Herbal medicine has been an age long tradition for the treatment and cure of diseases globally. Previous researches on telediagnosis and prescriptions in orthodox medicine studied applications of modern technological devices which could improve health care services. However, there is yet to be an exhaustive study on the audio-visual technological framework for telediagnosis and prescription in herbal medicine.  Hence, the research developed a collaborative and adaptive framework for telediagnosis and prescriptions in herbal medicine. The framework and its system were developed consisting of multimedia features for videoconferencing; ability to record, capture and replay consultations; and capacity for editing, data compression and short message service amongst herbal tele-consultants. The system was experimented on Ladoke Akintola University of Technology hotspot network for a period of twenty one days in order to determine the system’s average packet loss rate and packet transmitted with five herbal tele-consultant nodes (node-1, node2, node3, node4 and node5). All nodes were allotted Internet Protocol addresses through which the intending herbal tele-consultant(s) could be connected to the telediagnosis videoconference session. Three performance metrics, System Reliability Index (SRI), System Degree of Relevance (SDR), and System Ease of Usage (SEU) were used to carry out subject to the evaluation of the system by administering one hundred questionnaires herbal consultants to harvest users’ perception of the system based on a Likert rating scale. The results obtained from telediagnosis session showed that the system recorded packet loss rates of 3.46, 3.13, 3.42, 3.61 and 3.36% at node1, node2, node3, node4 and node5, respectively. Also, the average packets of 3123.2, 5017.6, 5683.2, 4454.4 and 4249.6 bits were obtained at node1, node2, node3, node4 and node5, respectively. The summary of the subjected evaluation of the system indicate that the respondent’s response means of 3.20, 2.88. and 3.42 were obtained for the SRI, SDR and SEU, respectively on a rating scale of 1 to 5

Marine crude-oil biodegradation: a central role for interspecies interactions

The marine environment is highly susceptible to pollution by petroleum, and so it is important to understand how microorganisms degrade hydrocarbons, and thereby mitigate ecosystem damage. Our understanding about the ecology, physiology, biochemistry and genetics of oil-degrading bacteria and fungi has increased greatly in recent decades; however, individual populations of microbes do not function alone in nature. The diverse array of hydrocarbons present in crude oil requires resource partitioning by microbial populations, and microbial modification of oil components and the surrounding environment will lead to temporal succession. But even when just one type of hydrocarbon is present, a network of direct and indirect interactions within and between species is observed. In this review we consider competition for resources, but focus on some of the key cooperative interactions: consumption of metabolites, biosurfactant production, provision of oxygen and fixed nitrogen. The emphasis is largely on aerobic processes, and especially interactions between bacteria, fungi and microalgae. The self-construction of a functioning community is central to microbial success, and learning how such " microbial modules" interact will be pivotal to enhancing biotechnological processes, including the bioremediation of hydrocarbons. © 2012 McGenity et al.; licensee BioMed Central Ltd

Breast cancer receptor status assessment and clinicopathological association in Nigerian women: A retrospective analysis

Background: Breast cancer markers are becoming increasingly important in breast cancer research due to their impact on prognosis, treatment and survival. The present retrospective study was carried out to quantify the proportion of estrogen (ER), progesterone (PR), and human epithelial receptor 2 (HER2) expressions and their association with tumour grade, age, and tumour size in breast cancer patients in Nigeria. Materials and methods: The paraffin embedded tissue sections were analysed for breast cancer markers using monoclonal antibody SP1 for ER and SP2 for PR and polyclonal antibody ErbB2 for HER2. Results: A total of 286 breast cancer paraffin wax tissue sections were analysed for ER, PR and HER2 expression. Of all the tissue samples examined, 20 (7%) were ER-positive, 6 (2.1%) were PR-positive, 11 (3.8%) were HER2-positive whereas 248 (87%) were triple-negative breast carcinoma. ER- and PR-positivity was associated with early grade I and II tumours (P 50mm (P < 0.0001). Conclusion: A small proportion of Nigerian women with breast cancer are ER/PR-positive which are associated with less aggressive, better prognosis and benefit from endocrine therapy. An even smaller proportion of patients with aggressive tumors were HER2-posivite but responsive to Herceptin treatment. Unfortunately, a very high proportion of cases were triple-negative which is associated with very aggressive tumours and no targeted treatment, which may explain the high mortality rates from breast cancer in Nigeri

Perception of Lagos State Secondary School Students on Influence and Effectiveness of Sex Education on Sexuality Behaviour

This study examined the perception of Lagos state secondary school students on influence and effectiveness of sex education on sexuality behaviour. Theoretically, the study is grounded in the Perception theory with focus on selective process theory and Uses and Gratification Theory. Descriptive survey method was adopted and data was collected using self-administered, structured close-ended questionnaire. 480 respondents were randomly selected from eight secondary schools from four local governments in Lagos State, Nigeria. Data collected were analysed using Pearson Product-moment correlation. Results indicated that there is a significant positive relationship between sex education and sexuality behaviour of secondary school students (r=0.34), there is a significant positive relationship between sex education and the effectiveness of sex education to sexual behaviour (r=0.24), and also there is a significant positive relationship between effectiveness of sex education and sexuality behavior of secondary school students. (r=0.39).nbsp The results also showed that majority of the students are aware of sex education which has different meaning to them. 63.8% of the students have received sex education with 53.6% of the students indicating from their teachers. 83.9% of the respondents agreed that sex education is relevant in stimulating their interest in sexual behaviour and 75.0% agreed that sex education is relevant in holding their interest in sexual development. The study recommended that parents/guardians should show more interest in the sexual development of their children/wards. Schools should organise effective communication programmes and seminars about sex education for the secondary school students

What Drives Innovation?: Inferences from an Industry-Wide Survey in Nigeria

This chapter seeks to make some contributions to the literature on firm-level innovation in Africa by attempting to identify the significant factors that explain the capability of firms in Nigeria to innovate using the results of an industry-wide study. We focused on the product and process innovation activities of firms between 2003 and 2006 and found differences in the factors that drive them at the firm level. Our results further show that interactions matter more than most innovation-related variables and that the most important actors that influence a firm’s innovation efforts are its customers and suppliers. We conclude that product and process innovations are not mutually exclusive and that a major key to successful innovation is how and with whom a firm collaborates. The implication of this for firms and policy makers is that an effectively wired innovation system where all stakeholders are active is critical for firm-level innovation capability.innovation; drivers; manufacturing industry; Nigeria; determinants

Comparative Assessment between Provisional Sums in Private and Public Client Initiated Project in Nigeria

A project is an activity moderated and measured within its set cost, time and quality. Funding of projects is as important as the project itself. Most projects are either funded by taxpayer’s money (Public initiated projects) or from individual’s pockets (Private initiated projects). Abuja, the capital of Nigeria is still developing after more than 30 years of creation, as evident with the volume of construction projects on going within the city. Cost overrun in the Nigerian construction industry is fast becoming a very popular occurrence especially in Abuja. This paper aims to conduct a comparative assessment of provisional sums in public and private client initiated projects in Abuja in a view to proffer solutions to the plague of cost and time overrun in construction projects. 50 structured questionnaires were administered to property developers and only 36 were eventually retrieved and employed for data analysis. The data was analysed using Analysis of Variance (ANOVA) and frequency distribution table. Findings revealed that the one-way analysis of variance (ANOVA) between the two groups indicates that p&lt;0.03 meaning that significant difference exist between the percentage differences of provisional sum in a private initiated project and public initiated project. It was also discovered that the Federal, State, and Local tiers of government are the biggest funders of public initiated projects while individuals; banks and churches are the biggest funders of private initiated projects. . The paper concluded that bureaucratic bottlenecks, corruption amongst other factors is responsible for fewer developers in public initiated projects. Government must reduce corruption, operational lapses and promote project continuity to reduce the number of abandoned projects and ensure qualitative delivery. Recommendations include that projects should be awarded and executed as soon as they are tendered to reduce the effect of inflation between tender time and project execution. Keywords: Provisional Sum, Private Initiated Project, Public Initiated Project, Cost, Funding