Effects of 3-Dimensional Computer Simulation Secondary School Students’ Academic Achievement in Chemistry

The study investigated the effect of 3-Dimensional Computer Simulation on Secondary School Students’ Academic Achievement in Chemistry, Ibadan Oyo State. Two research questions and two hypotheses were raised to guide the study. The study adopted pre-test, post-test non-randomized control group design quasi experimental design. The total population of the study comprised of all the 70,843 SSII chemistry students in Ibadan, Oyo State. A simple random sampling technique, using balloting without replacement was used to select two intact classes from the forty-two public secondary schools of mixed gender in the two Local Government Areas. The two schools selected constituted 127 students, 62 students (37 males and 25 females and convention group comprised of 65 students (35 male and 30 female). Two instruments were used to collect data in the study: Chemistry Achievement Test (CAT) and Chemistry Retention Test (CRT) with the reliability coefficients of 0.86 and 0.87 respectively using Kuder Richardson 21 (KR-21). Data were analyzed using mean and standard deviation were used to answer the research questions while t-Test was used to test the null hypotheses. Findings revealed that there was significant difference in the mean achievement score of secondary school students taught chemistry using 3-D computer simulation and their counterparts in control group. There was no significant difference in the mean achievement score of male and female students taught chemistry using 3D-computer simulation. These implied that 3-D computer simulation can be used to enhance students’ academic achievement in chemistry. It was therefore recommended among others that 3-D computer simulation strategy (3-DCS) was found effective in improving students’ academic achievement. Therefore. It can be recommended that curriculum planner can integrate this strategy as one of the strategies recommended for use by chemistry teachers in the curriculum

Comparative evaluation of carcass quality and sensory characteristics of meat of rabbits fed Vernonia amygdalina and Mucuna pruriens

Reduction of total fat and cholesterol contents as well as alteration of lipid profile to a more unsaturated kind are some methods for improving quality of meat. One of the safest strategies for achieving this is through dietary inclusion of natural occuring herbs. Therefore, a study was conducted to evaluate the effects of Vernonia amygdalina meal (VALM) and Mucuna pruriens meal (MPM) on performance, carcass and sensory quality of rabbits. Seventy-two weaned rabbits were randomly allotted to three dietary treatments, each replicated 3 times with 8 rabbits per replicate. Diet 1 was the control, diets 2 and 3 comprised of 15% each of VALM and MPM respectively each representing a treatment. At the end of 12th week, carcass evaluation, meat lipid profile and sensory evaluation were carried out. Results showed significant (P<0.05) increase in feed intake and daily weight gain for rabbits fed diets 2 and 3 as well as lower feed conversion ratio for rabbits fed diet 3 compared to the control. Rabbits on diet 3 indicated significan (P<0.05) increase in pre-slaughter weight, dressed weight as well as prime cuts (forelegs, thoracic cage, loin and hind legs). Meat lipid profile showed significant (P<0.05) reduction in total cholesterol, triglycerides, LDL, and VLDL while HDL increased for T3 and T2. Meat protein values showed significant (P<0.05) increase in T3 followed by T2 while abdominal fat decreased as against the control. Sensory evaluation showed significant (P<0.05) decline in tenderness from T3 to T2 without adverse effect on overall acceptability. Inclusion of the VALM and MPM in rabbit diets therefore improved performance, carcass quality and sensory characteristics

Extracts of Pterocarpus osun as a histological stain for collagen fibres

The staining ability of Pterocarpus osun extract on tissue sections was determined. 2 kg of P. osun stem was dried, milled to obtain a fine powder and a red pigment extracted from the powder with 1 L of 70% ethanol at 78°C for 24 h. The alcoholic and acidic extracts were used to stain tissue sections. Collagen fibres, red blood cells and muscles were stained in shades of reddish brown. Preliminary phytochemical screening of this extract revealed that it contained alkaloids, steroid ring, cardiac glycosides and reducing sugar.African Journal of Biotechnology Vol. 4 (5), pp. 460-462, 200

Salivary gland tumour of the lip: report of two cases and literature review

A research article on rare tumors affecting the salivary gland (SGTS).Salivary gland tumours (SGT'S) are uncommon; they represent 2.4% of head and neck neoplasm and include tumours affecting both major and minor salivary glands. The glands are divided into major and minor salivary gland categories. The major salivary glands are the parotid, submandibular and sublingual glands. The minor glands are dispersed throughout the upper aerodigestive submucosa (palate, tongue, lip, pharynx, nasopharynx, larynx, parapharyngeal space) and anatomical parts; skin, muscle and mucous membrane with numerous salivary glands in the submucosa. Pleomorphic adenomas (benign mixed tumours) are the most common benign SGT and comprise 85% of all salivary gland neoplasms. However, the incidence of SGT'S is claimed to be influenced by geographic and racial factors. African reports suggest a pattern that significantly differs from that of western countries. The ubiquitous deposits of the minor salivary glands complicate the diagnosis and management

Heavy Metals Concentration in Fluted Pumpkin (Telfairia Occidentalis) Grown and Consumed in Camp-2 Akamkpa Local Government Area of Cross River State, Nigeria

There are environmental and public health risk consequences, if plants take up nutrients as well as pollutants from the soil, which they can bio-accumulate. The Present study was carried out to assess the heavy metals concentration in vegetables plant called fluted pumpkin (Telfairia Occidentalis) grown and consumed in Camp2 Community of Akamkpa local government area of Cross River State (Nigeria). The plant samples were collected at the study sites in three locations, heavy metals analysis was carried out using atomic absorption spectrophotometer (AAS) after a wet digestion. Heavy metals such as Cadmium (Cd), Lead (Pb), Mercury (Hg), and Chromium (Cr), Arsenic (As), Nickel (Ni) in vegetable plant were determined. The result shows that the mean value of Nickel, lead and Cadmium in vegetable plant were significantly (p<0.05) higher in Camp2 compared to the control site. Hence these values were above WHO standard (0.1mg/l) and FAO/WHO standards of (0.2mg/kg) while others were within joint FAO/WHO standard limit. The uptake of these heavy metals from the soil to the plant through transfer factor (TF) could be the reason why the plants were deficient in minerals component in Camp2 compared to the control site. Consuming vegetable plants on contaminated environment could bring about negative impact on both animals and human health

Genotoxicity evaluation of Chlorfenapyr in exposed freshwater African catfish Clarias gariepinus using micronucleus test

Chlorfenapyr is a new formulated insecticide targeted against insecticide resistant species. Its application in targeting harmful aquatic insects may potentially contaminate aquatic environment. This study is to evaluate its genotoxic effects on non-targeted aquatic biota. The study assessed the genotoxic potentials of chlorfenapyr in African catfish (Clarias gariepinus) using the micronucleus (MN) test. Juvenile stage of C. gariepinus were exposed to different concentrations; 5.00 – 15.00 mgL-1 of chlorfenapyr for 96 hours, peripheral blood was collected through the caudal vein and examined for micronucleus induction in the erythrocytes. The tested concentrations of chlorfenapyr did not elicit significant [F (5, 18) = 0.167, p 0.971] increase in MN formation and other nuclear abnormalities in the peripheral erythrocytes of C. gariepinus. The outcome of this study gives credence to the view that chlorfenapyr is not clastogenic and or aneugenic to non-targeted aquatic vertebrate with reference to fish (C. gariepinus)

A giant ectopic hidradenoma papilliferum in a Niger delta region of Nigeria

Hidradenoma papilliferum is a known example of adnexal skin tumours with apocrine differentiation. It is a rare benign tumour which tends to arise from areas with rich concentration of aporine glands such as anogenital region, vulval, perineal, axillae, and periumbilical areas. In this report, the tumour was found in the upper outer quadrant of left breast, being one of the ectopic sites for this tumour. Contrary to most reports where male preponderance was popular for ectopic hidradenoma papilliferum, the patient in this report is a 71-year-old female. Considering the location of this tumour in this report, the likely histopathological differential diagnoses such as tubular apocrine adenoma, clear cell (apocrine) adenoma, lipoma, intraductal papilloma and papillary carcinoma of the breast should be considered for exclusion. This is the first reported case of a giant ectopic hidradenoma papilliferum of the breast in a Niger Delta region of Nigeria which also highlights the role of fine needle aspiration and cytology in the diagnosis of breast lesions

Operationalizing critical race theory in the marketplace

Race is integral to the functioning and ideological underpinnings of marketplace actions yet remains undertheorized in marketing. To understand and transform the insidious ways in which race operates, the authors examine its impact in marketplaces and how these effects are shaped by intersecting forms of systemic oppression. They introduce critical race theory (CRT) to the marketing community as a useful framework for understanding consumers, consumption, and contemporary marketplaces. They outline critical theory traditions as utilized in marketing and specify the particular role of CRT as a lens through which scholars can understand marketplace dynamics. The authors delineate key CRT tenets and how they may shape the way scholars conduct research, teach, and influence practice in the marketing discipline. To clearly highlight CRT’s overall potential as a robust analytical tool in marketplace studies, the authors elaborate on the application of artificial intelligence to consumption markets. This analysis demonstrates how CRT can support an enhanced understanding of the role of race in markets and lead to a more equitable version of the marketplace than what currently exists. Beyond mere procedural modifications, applying CRT to marketplace studies mandates a paradigm shift in how marketplace equity is understood and practiced

Endoparasites of Bucks Raised under Intensive and Semi-Intensive System

An investigation was carried out on bucks in intensive and semi-intensive systems of management. A total of sixteen (16) bucks (male goats) were randomly purchased for the study. The animals were divided into four groups of four animals per treatment and fed Panicum maximum, Gliricidia sepium for Treatment 1 while Treatment 2 were fed Panicum maximum, Gliricidia sepium plus concentrates. Those in T3 were fed concentrate and allowed to graze and T4 were fed Panicum maximum and were also allowed to forage. The result showed significant difference (P<0.05) in infestations of strongyles amongst the treatments

Urinary schistosomiasis among preschool-aged children in Sahelian rural communities in Mali

<p>Abstract</p> <p>Background</p> <p>Mass chemotherapy with praziquantel is the main control strategy for schistosomiasis in Mali. However, in the national control programme for schistosomiasis and soil-transmitted helminthiasis, infants and preschool-aged children are overlooked in preventive chemotherapy campaigns. We therefore determined the prevalence and intensity of urinary schistosomiasis in children between the ages 1-4 years in three villages across Diema health district, a rural community with endemic schistosomiasis in Mali. For <it>Schistosoma haematobium </it>diagnosis, a single urine sample of 10 ml obtained from each child was subjected to the standard urine filtration method.</p> <p>Results</p> <p>Of the 338 children examined 173 (51.2%) were infected. Both prevalence and intensity of infection varied significantly between communities (p < 0.01). There was no significant difference (p = 0.94) in infection rates between boys (51.2%) and girls (50.3%). Likewise, prevalence did not significantly increase with age (p = 0.86). The overall geometric mean of Williams (GMw) was 18.41 eggs/10 ml urine, with no significant association (p = 0.91) between boys (17.48 eggs/10 ml urine) and girls (19.69 eggs/10 ml urine). However, the GMw significantly increased with age (p = 0.04). Infection of preschool children would occur through early exposure to infected water bodies through both passive and active process.</p> <p>Conclusion</p> <p>Our study showed that preschool children living closely to lakes across in Mali are at high risk to be infected by schistosomiasis and contributed largely to the transmission; therefore schistosomiasis control interventions should also target infants in addition to school children and adults in endemic areas.</p