Shoulder Pain Syndrome Among Nigerians

Objectives: To identify aetiological causes of shoulder pain syndrome among patients attending a rheumatology clinic, and to highlight the therapeutic options.Design: Retrospective study.Setting: A private rheumatology clinic in Lagos, Nigeria from January 2002 to December 2006.Subjects: Forty female adult patients and 26 male adult patients aged 24-79 years. Main outcome measures: Patient reported outcome in terms of pain relief and increased mobility.Results: Sixty six subjects were seen during the study period. Females were more commonly affected and were mostly middle aged. Adhesive capsulitis was the most common condition while septic arthritis and avascular necrosis were least diagnosed 22.7% of the subjects could not, however, be categorised.Conclusion: Shoulder pain syndrome is common among Nigerians. Diagnosis and management are mostly based on the clinical presentations, especially considering the lack of sensitivity of plain radiographs and the high cost of more sensitive MRI. The treatment of these conditions are standard

Antibiotic resistance and resistance genes in Escherichia coli from poultry farms, southwest Nigeria

Introduction: This study investigated the mechanisms of resistance in 36 E. coli isolated from waste, litter, soil and water samples collected from poultry farms in Southwestern Nigeria. Methodology: Minimum inhibitory concentration (MIC) distributions of the isolates were determined using the methods of the Clinical and Laboratory Standard Institute and resistance genes detected by PCR. Results: A total of 30 isolates (94%) showed resistance to more than one antimicrobial. Percentage resistance was: tetracycline 81%, sulphamethoxazole 67%, streptomycin 56%, trimethoprim 47 %, ciprofloxacin 42%, ampicillin 36%, spectinomycin 28%, nalidixic acid 25%, chloramphenicol 22%, neomycin 14%, gentamicin 8%, amoxicillin-clavulanate, ceftiofur, cefotaxime, colistin, florfenicol and apramycin 0%. Resistance genes found among the isolates include bla-TEM (85%), sul2 (67%), sul3 (17%), aadA (65%), strA (70%), strB (61%), catA1 (25%), cmlA1 (13%), tetA (21%) and tetB (17%). Class 1 and 2 integrons were found in five (14%) and six (17%) isolates, respectively, while one isolate was positive for both classes of integrons. Seven out of eight isolates with resistance to ciprofloxacin and MIC ≤ 32 mg/L to nalidixic acid contained qnrS genes. Conclusions: Our findings provided additional evidence that the poultry production environment in Nigeria represents an important reservoir of antibiotic resistance genes such as qnrS that may spread from livestock production farms to human populations via manure and water.</jats:p

Pathogenesis of peritoneal drain complications; a case report of evolving adnexal evisceration following difficult retrieval of a retained peritoneal drain

Background: Intra-peritoneal drainage dates back to the time of Hippocrates when long bone tissue, metal, and glass tubes were employed. The benefit of routine intra-peritoneal drainage however remains debatable in contemporary times. Retained drains may be outward manifestations of more sinister or latent complications and how an entrapped surgical drain is removed, may determine the occurrence of further complications. Case Presentation: We report here the case of a 32-year-old primipara who had a retained improvised peritoneal drain, which was inserted during the cesarean section for continued oozing of serosanguineous fluid. Omental tissue found at laparoscopy, to have plugged a fenestration in the drain, was promptly relieved. A loop of the Fallopian tube was however later observed trapped in another fenestration and herniating into the stab incision of the drain tube towards the exterior, this was freed with an atraumatic laparoscopic grasper and drain tube retrieval completed under laparoscopic visualization. Conclusion: Insertion of the peritoneal drain during cesarean section should be carefully considered, when necessary; it should be done with the most appropriate drainage systems. Retrieval of the peritoneal drain is a risk factor for visceral herniation. Entrapped drains should be retrieved, under direct visualization, to prevent iatrogenic injuries

Students’ Perception of Reference Services as Determinant of Library use in Colleges of Agriculture in Oyo State, Nigeria

Descriptive survey design was used to study the students’ perception of reference services as determinant of library use in the Colleges of Agriculture in Oyo State (Federal College of Agriculture, Moor Plantation, Apata, Ibadan [FCAIB] and Oyo State College of Agriculture and Technology, Igboora [OYSCATECH]). The study has four objectives, three research questions and one research hypothesis was tested at 0.05 level of significance. Purposive stratified proportionate random sampling technique and a sampling fraction of fifteen percent (15%) were used to select a sample size of two hundred and eighty-seven (287) students out of the one thousand eight hundred and eighty-five (1885) students in the eight (8) departments that are common to the two Colleges (Population of the study). The response from a well-structured questionnaire administered on the sampled population was analyzed using Statistical Package for Social Science (SPSS). The result of the analyzed data showed positive perception of reference services in OYSCATECH (WX=2.71) and FCAIB (WX= 2.44). The result showed positive correlation between the perception of reference services and use of library in the two colleges of Agriculture in Oyo State –FCAIB ( r = 0.311) and OYSCATECH (r = 0.214). The study also identified purposes and frequencies of using the library by the students in the two institutions. The study recommended the use of electronic reference services in order to enhance ease, visibility, relevance and efficiency of reference services in our libraries and more importantly to encourage use of library

A Genetic Algorithm Approach to Optimal Sizing and Placement of Distributed Generation on Nigerian Radial Feeders

Mitigating power loss and voltage profile problems on radial distribution networks has been a major challenge to distribution system operators. While deployment of distributed generation, as compensators, has made a suitable solution option, optimum placement and sizing of the compensators has been a concern and it has thus been receiving great attention. Meta-heuristic algorithms have been found efficacious in this respect, yet the use of the algorithms in addressing problems of radial feeders is still comparatively low in Nigeria where analytical and numerical programming methods are common. Hence; the use of genetic algorithm to site and size distributed generator for real-time power loss reduction and voltage profile improvement on the Nigerian secondary distribution networks is presented. Backward-forward sweep load flow analysis, together with loss sensitivity factor, is deployed to identify the buses suitable for the installation of the distributed generation, while the algorithm is employed in estimating the optimum size. This approach is tested on the standard IEEE 15-bus system and validated using a Nigerian 11 kV feeder. The result obtained on the IEEE test system shows 183 kW loss using the compensator, as compared to 436 kW loss without the compensator; while on the Nigerian network the loss with the compensator was 4.99 kW, in comparison with no-compensation loss of 10.47kW. By the approach of this study, real power loss on the Nigerian feeder decreased by 52.3% together with energy cost reduction from N658,789.12 to N314,227.38. Likewise the minimum bus voltage magnitude and the voltage stability index of the network are improved to acceptable limits. This approach is therefore recommended as capable of strengthening the performance of the Nigerian radial distribution system

Structural and Optical Properties of Tin Doped Zinc Oxide Fibres Prepared By Electrospinning Technique

The study synthesized ZnO fibers using electrospinning technique. It also characterized and determined the effects of Sn2+ dopant on the optical properties of the fibers synthesized. This was with a view to exploring the potential of improving the performance ZnO semiconductor material in industrial applications. Polyvinyl Alcohol (PVA) solution was prepared and mixed with ZnO source. Zinc acetate was used as the ZnO source while Tin Acetate was used as Sn2+ dopant source. Viscous electrospinning solutions of PVA/Zinc Acetate and three different compositions of Tin Acetate were prepared. The compositions of dopants used were 5, 7 and 9-wt. %. Samples of the depositions from the electrospinning process were annealed at 600o C at a rate of 4o C per minute for 6 hours. Scanning electron microscopy (SEM) was employed to reveal the morphology of the depositions. The structural analysis of the fibers was carried out using x-ray diffractometry (XRD) while the optical properties of the fibers were investigated using ultra violet visible spectrophotometry. The SEM results showed the depositions to be web of fibers. The XRD confirmed the crystallization of undoped and doped ZnO fibers from the acetates. The crystal sizes of the fibers were in the range of 5.566 to 7.202 nm. Furthermore, wide bandgap energy values ranging from 3.26 to 3.46 eV were obtained from the results of the optical properties of the fibers. The results showed that the average crystal sizes of Sn2+ doped ZnO fibers were larger than those of the undoped fibers. However, it was observed that the average crystal size decreases with increase in Sn2+ content. The results also showed that the bandgap energy values of the fibers increase with dopant concentration. The study established the viability of fabricating doped and undoped ZnO structure in form of fibers in order to enhance its performance in industrial applications. Also, the results showed that the optical properties of the fibers improved with increase in Sn2+ dopant concentration. Keywords: ZnO fibers; Electrospinning technique; Structural analysis; Optical properties;  Sn2+ Dopant; Band gap energy value; Crystal siz

ELECTRONIC LEARNING DURING THE COVID-19 PANDEMIC LOCKDOWN AND THE CHALLENGE OF USAGE AMONG SELECTED UNDERGRADUATE STUDENTS OF PRIVATE AND PUBLIC UNIVERSITIES IN NIGERIA

This paper examined the various electronic learning platforms adopted by students in both private and public Universities in Nigeria and the challenges associated with their usage during the COVID-19 pandemic lockdown in 2020. With the ripple effect of the coronavirus cutting across all countries and sectors, about 91% of the global student’s population was affected by this global health catastrophe. The objective of this study is to compare the experiences of private and public University students to determine whether there is a significant disparity in the accessibility, affordability, and ease of use of the various e-learning platforms that were adopted during the global pandemic lockdown. The study employed the survey method in eliciting useful information from undergraduate students at Covenant University, and the undergraduate students at the University of Lagos. The population of study consisted of 374 undergraduate students from both schools. Questionnaire was physically administered to students in Covenant University while a google form was created for students in the University of Lagos due to the inaccessibility of students whose lecturers are currently on an industrial action. Data was analyzed using descriptive techniques in frequencies, percentages, and linear regression analysis. Results from the study revealed that 68.1% of students in Covenant University utilized more e-learning platforms like Moodle, Coursera, Zoom and WebEx unlike their counterparts in the University of Lagos who used only Moodle and Zoom by 43.6%. Also, 87.5% of Covenant University undergraduate students made use of their laptops mostly for their e-learning classes while 56.4% of their counterparts in the University of Lagos mostly made use of their smartphones. Findings revealed that students from the public University faced major challenges such as unstable internet connectivity, limited financial capability in buying devices such as laptops and lack of skill and competence in navigating the e-learning platforms while students in the private University on the contrary had relatively stable internet connectivity, could afford laptops and smart devices and had the requisite skills to properly navigate their e-learning platforms. The study concludes by recommending the provision of substantial financing that will aid in the acquisition of relevant technology to promote and support e-learning in public Universities in Nigeria. It also suggested the inclusion of public University students in adequate training on how to navigate the e-learning platforms, thereby equipping them with requisite skills needed in maximizing the benefits of e-learning. By so doing, the Nigerian educational system would be better prepared in facing future emergencies that may warrant remote learning

Electro-Learning Amidst Covid-19 Lockdown and Related Challenges of Undergraduates in Nigerian Universities

This paper examined the various electronic learning platforms adopted by undergraduates in Nigerian Universities which include both private and public universities in Nigeria and its related challenges during the COVID-19 lockdown in 2020. The coronavirus’ enormous consequences, which affected all countries and industries, influenced around 91% of the world's students. The objective of this study is to investigate the experiences of private and public university undergraduates in a Nigerian University, to determine whether there is a significant disparity in the accessibility, affordability, and ease of use of the various e-learning platforms that were adopted during the global pandemic lockdown. The study employed the survey method in eliciting useful information from undergraduates in Covenant University, and in the University of Lagos. The population of the study consisted of 374 undergraduates from both schools. Due to the inaccessibility of students whose lecturers were on industrial action by the Academic Staff Union of Universities, the questionnaire was physically distributed to students at Covenant University, while a Google form was generated for students at the University of Lagos. Data was analyzed using descriptive techniques in frequencies, percentages, and linear regression analysis. Results from the study revealed that 68.1% of students at Covenant University utilized more e-learning platforms like Moodle, Coursera, Zoom, and WebEx unlike their counterparts at the University of Lagos who used only Moodle and Zoom with 43.6%. Also, 87.5% of Covenant University undergraduates made use of their laptops mostly for their e-learning classes while 56.4% of their counterparts in the University of Lagos mostly made use of their smartphones. Findings revealed that students from public Universities faced major challenges such as unstable internet, limited financial capability in buying devices such as laptops, and lack of skill and competence in navigating the e-learning platforms while students in the private universities on the contrary had relatively stable internet connectivity, could afford laptops and smart devices and had the requisite skills to properly navigate their e-learning platforms. The study concludes by recommending the provision of substantial financing that will aid in the acquisition of relevant technology to promote and support e-learning in public universities in Nigeria. It also suggested the inclusion of public University students with adequate training on how to navigate the e-learning platforms, thereby equipping them with the requisite skills needed to maximize the benefits of e-learning. The study emphasizes how the use of e-learning can be an effective sustainable learning solution for current and future situations by the main actors, educators, and learners. In the long run, the Nigerian educational system would be better prepared to face future emergencies that may warrant the adoption of remote learning

Detection of the carbapenemase gene blaVIM-5 in members of the Pseudomonas putida group isolated from polluted Nigerian wetlands

Abstract There are increasing concerns about possible dissemination of clinically relevant antibiotic resistance genes, including genes encoding for carbapenemases in the environment. However, little is known about environmental distribution of antibiotic resistance in Africa. In this study, four polluted urban wetlands in Nigeria were investigated as potential reservoirs of carbapenem-resistant bacteria (CRB). CRB were isolated from the wetlands, characterized by Blue-Carba test, MIC determinations and whole genome sequencing (WGS). Nine of 65 bacterial isolates identified as members of the Pseudomonas putida group (P. plecoglossicida and P. guariconensis, respectively) harboured the metallo-beta-lactamase gene bla VIM-5. WGS revealed the bla VIM-5 in three novel Tn402-like class 1 integron structures containing the cassette arrays aadB|bla VIM-5|bla PSE-1, aadB|bla VIM-5|aadB|bla PSE-1, and bla VIM-5|aadB|tnpA|bla PSE-1|smr2|tnpA, respectively. Strains carrying the aadB|bla VIM-5|bla PSE-1 cassette also carried an identical integron without bla VIM-5. In addition, the strains harboured another Tn402-like class 1 integron carrying bcr2, several multidrug resistance efflux pumps, and at least one of ampC, aph(3”)-lb, aph(6)-ld, tetB, tetC, tetG, floR, and macAB. This is the first report of a carbapenemase gene in bacteria from environmental sources in Nigeria and the first report of bla VIM-5 in environmental bacteria isolates. This result underscores the role of the Nigerian environment as reservoir of bacteria carrying clinically relevant antibiotic resistance genes

Compliance of High-rise Buildings Vertical Accessibility Components with Universal Design Strategies: A Case Study of Covenant University, Ota, Nigeria

In recent times, with the increase in population, land areas that can accommodate the traditional school design model are becoming difficult to come by in urban areas or expensive. Therefore, for urban schools to accommodate the increasing population, school designs have shifted from outward horizontal arrangements to upward vertical designs. Consequently, this study examined the compliance of vertical accessibility components in high-rise buildings in Covenant University, Ota in Nigeria, with universal design strategies, with a view to identifying areas for further improvements, towards contributing to ways of promoting social inclusion in educational environments. The research is a qualitative case study of a tertiary institution that investigated two high-rise buildings on the university campus. An observation guide developed for the study and a digital camera were used to collect primary field data. The data were content analysed and presented using descriptive approach with the aid of texts and pictures. The findings revealed that ramps, steps/staircases and lifts are the vertical accessibility components provided in the high-rise buildings, all of which were found to exhibit various levels of inconsistencies with universal design strategies. One of the key recommendations of the study is to retrofit the buildings with necessary accessible features where they are lacking or inappropriately provided, where possible. The study will be useful to researchers, students, educators, policy makers and building design professionals in addressing issues relating to universal design of the built environment, particularly as it relates to the provision of equitable vertical movement features in high-rise public buildings