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Investigation into the semiochemical communication involved in neonatal offspring recognition in sheep by Viviers, Marlize Zaretha
Published 2010Get full text
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Design and analysis of small scale wind turbine support structures by Nel, Emma
Published 2012Get full text
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Differential proteomic profiling towards elucidation of TB-IRIS pathogenesis by Peyper, Janique Michelle
Published 2022“…Diagnosis is one of exclusion, no reliable laboratory markers exist, corticosteroid-mediated prophylaxis and therapy are only partially effective, and no treatment targets tissue damage. …”
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Page will reload when a filter is selected or excluded.- "All over the world, there is an increasing enrolment level for university admissions in view of the ever-increasing benefits of earning university degrees. Thus, the high population of students in many universities, coupled with a high number of vehicles has made traffic control a challenge to University traffic managers. In this paper, the method of Resca1e Range Analysis (RRA) was used to estimate the Hurst Exponent Value (HEV) for the traffic inflow through the main entrance gate of a university as a control measure. Data from a university in the developing countries was collected and analysed. The number of vehicles that entered consecutively per five minutes was observed between 07:00 and 19:00 over a 144 count and 17 independent cases constructed between adjacent cases. Rescale Range Algorithm platform is then used for the data, and coded in FORTRAN Language. With a case made up of 128 consecutive five-minute dependent traffic inflow records, a total of 3348 vehicles entered the university community within the studied period while the average number of vehicles inflow per hour was 279. Average number of vehicles that entered per five minutes was 24. No vehicle entered between 13:25 and 13:30. For all cases, the estimated HEV range between 0.5742 and 0.6955. The computed average HEV was 0.6303, the coefficient of fitness (R2) for all cases range between 0.9552 and 0.9787, while the computed average value was 0.9680. The HEV greater than 0.5 estimated for all cases is an indication of positive con-elation called Persistent. It expresses the fact that there are extended periods in which the traffic inflow to the university community deviated from the long term mean. This information is useful for vehicle garage design. For reliable estimates of the average HEV for design purposes, the study period should be extended to a whole week or an academic session. " 1 results 1
- "Mathematics has diverse applications as decision making tool. This study investigated the use of a proposed pure mathematical formulation (i.e. excluding human factor) for citing appropriately the location of political capital ci of an inhabited designated area. Digitized data of Scale map of Nigeria as a case study was used as input to a FORTRAN 90 programme codes of an equivalent least squares method mathematical formulation. The resulting simultaneous equations involving the political capital city coordinates as unknown variables were solved using Gauss Elimination Algorithm. The political capital city Cartesian coordinate prescribed as (26, 24) in grids unit for the studied case of scale map of Nigeria compared visually satisfactorily with Abuja location on the Map. The Nigeria land area cover was under-estimated by 2.3% referencing 923,768 sq km obtained from Microsoft Encarta Premium (2009). Similarly the Nigeria coastline was estimated. as 25.3% of the country's estimated perimeter (3369 krn). This mathematical tool can be used to cite the centrally located capital city or capital city relocations economically, timely, accurately and reliably. This programme can also be used for citing of capital cities for other countries and center of any irregular shapes on two dimensional plane. " 1 results 1
- Acoupedic Therapy 1 results 1
- Code alternation has become a common feature of oral conversation among bilinguals. However, scholars do not agree on the reasons for this. While some see it as a sign of linguistic deficiency, some see it as a welcome development and a normal feature of bilinguals. Several studies have been carried out on incidence of code alternation both locally and internationally. But very few of such studies examined reasons and implications for code alternation among Yoruba/English bilingual students. This study examines the variables that may influence bilingual —pre-service teachers in colleges of education to alternate codes in their verbal communication. Descriptive survey design was adopted in the study and all pre-service teachers at Emmanuel Alcyande College of Education, Oyo, Oyo state and Federal College of Education, Abeokuta, Ogun State constituted the population. Four hundred students were randomly selected for this study while a self constructed questionnaire titled “Code Alternation in Pre-service Teacher Communication; Reasons and Implications” which had a reliability coefficient index of 0.68 was used to elicit responses from the subjects. Chi square was used to analyse the data generated in the study. Findings revealed that participants' roles and relationship have significant influence on code alternation. Also, there is significant influence of situational factors on code alternation among the pre-service teachers in colleges of education. Based on the findings of the study, appropriate recommendations were made. 1 results 1
- Digital skills 1 results 1
- Digital technologies 1 results 1
- Earlier studies by this author in 1976 provided evidence of an association between an infective, sexually transmitted agent, the Herpes Simplex Virus Type-2 (HSV—2) and human carcinoma of the cervix, irrespective of geographic location or ethnic origin of the individuals. Similarly, HSV-2 related antigens were demonstrated by the indirect immuno-fluorescent technique in desquamated cells of carcinoma of the cervix tissues from tumour bearing patients. To highlight the Potentials of the detection of tumour antigens in tumour-faearing patients as aid to early diagnosis of the cancer, Isolation and purification of the Tumour Associated Antigens (TAA) of human cancer of the cervix were attempted by immunological and physicochemical procedures in this study. Two antigen preparations, one the Soluble Antigens (SA), and the other, the Membrane Bound Antigens (MBA) were prepared from a pool of cancer of the cervix (CaCx) tissues. The soluble antigens were extracted by homogenization in Earle’s Balanced Salt Solution (EBSS) containing antibiotics, and the membrane-bound antigens were solublised by 3-molar potassiurn Chloride (3 Molar KCl). For isolation and purification of TAA, procedures for the purification of proteins were explored. These include physicochemical stepwise ammonium sulphate fractionation, sephadex ion exchange chromatography, sephacryl S-200 gel filtration, and affinity chromatography to eliminate the normal tissue components of the antigen fractions. Hyperimmune rabbit sera were then prepared against the partially purified TAA. Immunodiffusion studies, employing hyperimmune rabbit sera prepared against the partially purified TAA were used to demonstrate tumour associated antigens in the various cancer antigen preparations, and Circulating Tumour Associated Antigens (C-TAA) in the sera of tumour- bearing patients. The TAA in the cancer tissues showed lines of identity with the C-TAA in patients sera. Techniques involving adsorption by immuno-precipitation-in-gel with Normal Cervix (NCx) tissue antigen preparations, and pooled Normal Human Sera (NHuS) were utilized for the removal of antibodies to NCx and NHuS in the rabbit sera, after which there were no reactions with NCx indicating the specificity of TAA for CaCx. A comparison of the soluble and 3 Molar KCl extracts of the cancer antigens by immuno-precipitation reaction, using adsorbed hyperimmune rabbit sera prepared against the partially purified CaCx TAA, demonstrated three TAA (TAA-1, close to the central antisera well, TAA-2, intermediate and TAA-3, close to and curving towards the peripheral antigen well) in the soluble antigen preparation. Only one TAA (probably identical to the TAA-3 of the soluble antigen) was demonstrated in the 3 Molar KCl extract. Using the rabbit antisera against the partially purified CaCx TAA, adsorbed with NCx and NHuS, results of coded sera showed that immunodiffusion reaction was able to detect circulating TAA in 75.0 per cent of patients with cancer as compared with 5.6% in women with benign gynecological diseases, 1.4% in pregnant women and 0.0% in healthy control women. The result indicates that the test has great potential for immunodiagnosis of cancer of cervix. Although the sensitivity of the test method was low, the specificity was high, and could provide a means of early diagnosis of neoplastic changes in the cervix. The detection of Circulating-TAA as tumour markers in sera of patients, may someday become routine, and thus make earlier diagnosis of cancer possible. Indications are that immuno-diagnostic procedures can be designed in ways that are reproducible, simple and reliable. Such serological tests would extend our present ability for detection and monitoring of malignancies. 1 results 1
- Economic challenges in Nigeria have prompted many undergraduate students to engage in social media entrepreneurship for financial sustainability. Platforms like Facebook and Instagram provide cost-effective business opportunities. While this entrepreneurship offers benefits, it raises concerns about its impact on academic performance, especially as students often multitask between business and studies. Grounded in the Uses and Gratifications Theory, this study investigated the relationship between social media entrepreneurship and the academic performance of undergraduates. A descriptive survey research design was employed, using a randomly selected sample of 200 students from five faculties: Education, Arts, Sciences, Law, and Social Sciences at the University of Ibadan. The instrument used for data collection was the Social Media Entrepreneurship and Academic Performance Questionnaire (SMEAPQ), which included structured items eliciting responses on the social media platforms used for entrepreneurial activities, the types of social media businesses engaged in, the influence of motivation on entrepreneurial engagement, and the impact on academic performance. The reliability of the questionnaire was established through a pilot test, yielding a coefficient of 0.75. Data were analysed using both descriptive and inferential statistics. Specifically, Pearson Product-Moment Correlation (PPMC), t-tests, and means were utilized. The findings revealed that undergraduates primarily use WhatsApp (X̄=3.59), Instagram (X̄=2.97), and Telegram (X̄=2.87) for entrepreneurial ventures, focusing on influencer marketing (X̄=3.31), web development/coding (X̄=3.24), affiliate marketing (X̄=3.19), and e-commerce (X̄=3.05). A significant positive relationship was found between undergraduate motivation and engagement in social media entrepreneurship (r=.222; p<0.05), aligning with the Uses and Gratifications Theory. Additionally, a significant positive association was observed between engagement in social media entrepreneurship and undergraduates’ academic performance (r=.236; p<0.05). The study revealed that female students had better engagement in social media businesses than male students (t(195) =-3.76; p<0.05). There is a need for targeted support to help students balance business and academics, in order to foster both financial independence and academic success. 1 results 1
- Financial Independence 1 results 1
- Hearing Impairment 1 results 1
- Nigerian association of social workers 1 results 1
- Peer Influence 1 results 1
- Social work practice 1 results 1
- Social work profession's bill 1 results 1
- Social workers 1 results 1
- Structural failures occur due to a number of reasons. These may include under design, poor workmanship, substandard materials, misleading laboratory tests and lots more. Reinforcing steel bar is an important construction material, hence its properties must be accurately known before being utilized in construction. Understanding this property involves carrying out mechanical tests prior to design and during construction to ascertain correlation using steel testing machine which is usually not readily available due to the location of project. This study was conducted to determine the reliability of reinforcing steel testing machines. Reconnaissance survey was conducted to identify laboratories where yield and ultimate tensile strengths tests can be carried out. Six laboratories were identified within Ibadan and environs. However, only four were nfunctional at the time of the study. Three steel samples were tested for yield and tensile strengths, using a steel testing machine, at each of the four laboratories (LM, LO, LP and LS). The yield and tensile strength results obtained from the laboratories were compared with the manufacturer’s specification using a reliability analysis programme. Structured questionnaire was administered to the noperators in each laboratory to consider their impact on the test results. The average value of manufacturers’ tensile strength and yield strength are 673.7 N/mm2 and 559.7 N/mm2 respectively. The tensile strength obtained from the four laboratories LM, LO, LP and LS are given as 579.4, 652.7, 646.0 and 649.9 N/mm2 respectively while their yield strengths respectively are 453.3, 597.0, 550.7 and 564.7 N/mm2. Minimum tensile to yield strength ratio is 1.08 for BS 4449: 2005 and 1.15 for ASTM A615. Tensile to yield strength ratio from the four laboratories are 1.28, 1.09, 1.17 and 1.15 for LM, LO, LP and LS respectively. The tensile to yield strength ratio shows that the result obtained from all the laboratories meet the code requirements used for the test. The result of the reliability test shows varying level of reliability between the manufacturers’ specification and the result obtained from the laboratories. Three of the laboratories; LO, LS and LP have high value of reliability with the manufacturer i.e. 0.798, 0.866 and 0.712 respectively. The fourth laboratory, LM has a reliability value of 0.100. Steel test should be carried out in a laboratory using the same code in which the structural design was carried out. More emphasis should be laid on the importance of code provisions. 1 results 1
- The development of transcranial colour-coded duplex sonography (TCCS) has resurrected the hope of safe, real time bedside brain imaging beyound childhood. This review article provides an overview of the role of TCCS in the management of patients with stroke. The objective is to stimulate interest in the field of neurosomology as a potential means of improving neurological outcome for stroke patients and a area for stroke research endeavours in Africa. Literature search was done on MEDLINE, Cochrane library, and GoogleScholar database with the following keywords: transcranial colour Doppler, Transcranial duplex sonography,stroke, infarct and haemorrhage. We also identified relevant articles from the references section of studies produced by our literature search. We discussed the roles of TCCS to discriminate ischaemic from haemorrhagic forms; unravel the mechanism of stroke; monitor temporal evolution of stroke and predictors of stroke outcome; and promote better understanding of the epidemiology of stroke. It emerging role as a potent point-of-care imaginf modality for definitive treatment in ischaenic stroke within and outside the hospital setting is also highlighted. Comparison of TCCS with alternative modalities for neuroimaging for stroke patients in Africa is presented vis-a-vis the potential economic relief which widespread adoptionof TCCS may provide. We advocate capacity building for TCCS and suggest some action plans required to achieve safe, cheap, affordable and reliable ultrasound based neuroimaging for stroke patients in resource limited areas of Africa. 1 results 1
- This research examined knowledge, usage, risks, and challenges associated with digital technologies (DTs) in social work practice (SWP) among social workers in Nigeria. The study adopted the survey research design and sampled 33 registered social workers from Oyo State Chapter of the Nigerian Association of Social Workers (NASoW) using a purposive sampling technique. Quantitative data were collected with the researcher's self-designed PDTSWPS tool which was validated by experts in the field for consistency with the research objectives and tested for internal consistency reliability coefficient by Cronbach Alpha which yielded the following results . 0.65,0.67 and 0.66 respectively. The study revealed that social workers deploy DTs using various DTs tools such as: computers, tablets, smartphones, the internet, emails and social media platforms for social casework interventions in Nigeria. The study also revealed that social workers have high knowledge of the risks associated with the usage of DTs for social work practice. These social workers faced DTs-related challenges which are ethical and operational. The study recommended that organisations should collaborate with professional associations such as NASoW to actively promote the usage of DTs for SWP among social workers in a digitally evolving nation like Nigeria. They should also train social workers on the usage of DTs tools and ensure that they comply with all the professional codes of ethics in their field of practice. The government should as well sign the social work profession’s bill to enable NASoW to professionalise social work practice in Nigeria and institutionalise the ethical usage of DTs for SWP among social workers in social casework interventions in Nigeria 1 results 1
- This study examined the effectiveness of auditory integration training and acoupedic therapy on word recognition among children with hearing impairment. Thirty three children between five and ten years old participated in this study. All the participants had Pre-Lingual and Post-Lingual hearing impairment with degree of hearing loss ranging from mild, moderate, severe to profound. All the children had their hearing loss confirmed through audiometric test and they were fitted with hearing aids. The instruments used consisted of Macro 53 brand of audiometer calibrated on ISO-13485:2008, word recognition test adapted from Betts (1946) with reliability of 0.89 for pre and post tests and case history of the participants. Data collected were coded and analysed using Analysis of Co-variance using SPSS version 17. The results revealed that Auditory Integration Training and Acoupedic therapy had significant effects on word recognition among the participants and that Auditory Integration Training was more effective on word recognition among children with hearing impairment. Also, there were significant main effects of degree and onset of hearing loss on participants’ word recognition. It was recommended that early intervention in the form of Auditory Integration Training and Acoupedic Therapy should be adopted. 1 results 1
- Undergraduate 1 results 1
- Uses and Gratifications Theory 1 results 1
- Word Recognition 1 results 1
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