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Prevalence of Asymptomatic Bacteriuria in HIV Infected Patients in a Tertiary Hospital in Lagos, Nigeria

World Journal of AIDS 2013年第2期3卷 105-110页

作者： Akinsegun Akinbami Ibidun Bode-Shojobi Sarah Ajibola olajumoke.oshinaike.ade.umi adediran Olaitan Ojelabi Kamal Ismail Bodunrin Osikomaiya Department of Haematology and Blood Transfusion College of Medicine Lagos State University Ikeja Nigeria Department of Haematology and Blood Transfusion Faculty of Clinical Sciences College of Medicine University of La- gos Lagos Nigeria Department of Haematology and Blood Transfusion Lagos State University Teaching Hospital Ikeja Nigeria Department of Haematology and Blood Transfusion Lagos University Teaching Hospital Idiaraba Nigeria Department of Medical Microbiology Lagos University Teaching Hospital Idiaraba Nigeria Department of Medicine College of Medicine Lagos State University Ikeja Nigeria

Background: People living with Human Immunodeficiency Virus (HIV) are more predisposed to urinary tract infections due to suppression of their immunity by the virus. Asymptomatic bacteriuria is associated with an increased risk of symptomatic urinary tract infection and the latter being an important contributor to development of chronic renal failure, hypertension and toxaemia of pregnancy. The aim of this study was to determine the prevalence of asymptomatic bacteriuria in HIV-infected patients and proffer a recommendation on the need or otherwise to screen. Methods: This was a cross sectional study of treatment-naive HIV-infected patients attending the HIV clinics of Lagos State University Teaching Hospital (LASUTH), Ikeja. A single voided aseptically collected mid-stream urine (MSU) was obtained from each patient and all samples processed immediately, were sent for urinalysis and culture. Isolates were considered significant if there were ≥105 colony forming unit/mL (CFU/mL) with 2 or less isolates, doubtful significance if 5 CFU/mL. Significant isolates were selected for identification. Data were analyzed using SPSS version 16.0 (Statistical Package for Social Sciences, Inc., Chicago, Ill). Results: A total of 156 consenting participants were recruited into the study. The mean age was 36.45 ± 8.65 years. There were 60 of 156 (38.4%) males and 96 of 156 (61.56%) females. Only 33 of 156 (21.2%) had significant bacteriuria, out of the 33 participants, 19 (57.8%) were asymptomatic, while 14 of 33 (42.4%) had significant growth but were symptomatic or on antibiotics. E. coli was isolated in 9 of 19 (47.3%), followed by Staph aureus 4 of 19 (21.05%). Conclusion: More than half of participants who had significant growth had asymptomatic bacteriuria, while one-fifth of all patients had significant growth. Considering this statistics, screening for or treatment of asymptomatic bacteriuria may be recommended in all HIV-infected patients.

关键词： Prevalence Screening Asymptomatic Bacteriuria HIV-Infected Patients

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New-Onset Seizures in HIV Patients on Antiretroviral Therapy at a Tertiary Centre in South-West, Nigeria

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World Journal of AIDS 2013年第2期3卷 67-70页

作者： oshinaike olajumoke Akinbami Akinsegun Okubadejo Njideka Ojo Oluwadamilola Ojelabi Olaitan Dosunmu adedoyin adediran adewumi Dada Akinola Ajibola Sarah Department of Haematology and Blood Trans- fusion Lagos State University College of Medicine Lagos Nigeria Department of Haematology and Blood Transfusion College of Medicine University of Lagos Lagos Nigeria Department of Medicine College of Medicine University of Lagos Lagos Nigeria Department of Medicine Lagos State University College of Medicine Lagos Nigeria

Background: Seizures are associated with neurological manifestations of HIV. They may be the presenting symptom and can occur at any disease stage. Aim: To determine the frequency and clinical aspects of new-onset seizures in patients with human immunodeficiency virus (HIV) infection. Methods: A study of an HIV-infected patient cohort on highly active anti-retroviral therapy (HAART) in the out-patients clinic of the Lagos state university teaching hospital, Nigeria. In a cross-sectional design, 308 HIV infected patients were recruited over a period of 1 year. Cases with a first seizure during this period were further examined. Details of demographic data, the first seizure date, seizure characteristics, neurologic complications and CD4 count at the time of the seizure were documented. Results: A total of 20 (6.5%) had new-onset seizures during the study period. 6/20 (30%) were males and 14/20 (70%), females. Their ages ranged between 22 - 51 years with a mean of 34.2 ± 8.7 years. The seizure was focal in 2/20 (10%) of cases and generalised in 90% (18/20) of cases. A total of 13/20 (65%) had recurrence of their seizures. None of the cases had focal neurological deficit at the time of the first seizure. The mean CD4 count was 165.3 ± 145.7. The mean duration on HAART was 19.5 ± 12.7 months. Cases with CD4 counts ≤200 cells/mm3 constituted 70% (14/20) whilst those with CD4 counts >200 made up 30% (6/20) [p = 0.666]. Conclusions: Seizures remain a significant neurological manifestation of HIV infection and has a high recurrence rate. It occurs more commonly in the advanced stage with severe immune suppression and may be attributable to HIV encephalopathy. Early treatment would reduce the burden and improve patient’s quality of life.

关键词： New-Onset Seizures HIV/AIDS

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Digital earth applications in the twenty-first century

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International Journal of Digital Earth 2014年第7期7卷 511-515页

作者： Rolf ade By Yola Georgiadou Faculty of Geo-Information Science and Earth Observation(ITC) University of TwenteEnschedeThe Netherlands

In these early years of the twenty-first century,we must look at how the truly cross-cutting information technology supports other innovations,and how it will funda-mentally change the information positions of government,private sector and the scientific domain as well as the *** those positions,location will be a prominent linking *** classical top-down system architectures of information exchange will be diluted by peer-to-peer and bottom-up channels,forcing us to rethink their *** should not only focus on better architectures,but need to attend to a different economy of information exchange,in which the‘client’is not only the information sink,but has become an important source as *** laws of this rising‘infoconomy’have yet to be settled *** special issue on‘Digital Earth Applications:Technological design and organizational strategies’brings together a number of papers that shed light on this future information ecosystem in which location-specific information will be exchanged between *** introduction presents a framework that combines geoinformation streams and organisations brokering between government,science,private sector and *** novel framework helps us improve the appreciation of those papers.

关键词： geoinformation governance information architecture digital earth

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AT WHAT COST? AN ANALYSIS OF THE GREEN COST PREMIUM TO ACHIEVE 6-HOMESTAR IN NEW ZEALAND

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Journal of Green Building 2020年第2期15卷 131-155页

作者： Rochelle ade Michael Rehm University of Auckland Business School Department of PropertyAucklandNew Zealand

In the green building industry there is an implicit understanding that the use of a green building rating tool will attract additional capital *** phenomenon has been well studied in commercial buildings,with mixed results,but has received little focus in the residential,single family *** New Zealand the local green building council advises the market that they have reduced the time and cost to implement their green building rating tool,Homestar,through modifications to version 4 of the rating tool,which include the use of a new 6-Homestar *** research investigates this claim using a comparative cost methodology to determine the potential additional capital cost commitment that would be required to achieve a 6-Homestar certification,utilising ten standalone and terraced house designs from the Hobsonville Point development in Auckland,*** research determines that there is an additional cost to achieve 6-Homestar of 3-5%.This is nearly double compared to previous research into Homestar and also finds that,for the houses reviewed,the use of the 6-Homestar checklist is less cost effective than other ***,in this instance the advice and guidance of the green building council is erroneous and misleading to the market.

关键词： Homestar Green Building Sustainability Rating Tools Green Building Council

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Approximate analytical solution of the Dirac equation with q-deformed hyperbolic Poschl–Teller potential and trigonometric Scarf II non-central potential

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Chinese Physics B 2015年第3期24卷 48-54页

作者： ade Kurniawan A.Suparmi C.Cari Physics Department Sebelas Maret University

An approximate solution of the Dirac equation for a spin-1/2 particle under the influence of q-deformed hyperbolic P ¨oschl–Teller potential combined with trigonometric Scarf II non-central potential is studied analytically. It is assumed that the scalar potential equals the vector potential in order to obtain analytical solutions. Both radial and angular parts of the Dirac equation are solved using the Nikiforov–Uvarov method. A relativistic energy spectrum and the relation between quantum numbers can be obtained using this method. Several quantum wave functions corresponding to several states are also presented in terms of the Jacobi Polynomials.

关键词： Dirac equation q-deformed hyperbolic function Poschl–Teller potential trigonometric Scarf II potential

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Pre-rig mobilization hazard evaluation in offshore oil and gas prospect drilling:A case study of TM field,offshore Niger Delta

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Energy Geoscience 2023年第1期4卷 158-178页

作者： Oluwatimilehin B.Balogun olajumoke C.Akintokewa Department of Geosciences Mountain Top UniversityPrayer CityOgun StateNigeria Department of Geology Obafemi Awolowo UniversityIle-IfeNigeria

TM Field,located offshore Niger Delta in the Gulf of Guinea(Nigeria),has been evaluated for potential drilling hazards prior to the drilling of a proposed oil *** is in a region where potential hazards that could inhibit successful drilling exercise have not been adequately *** study adopted the modern technique of offshore geohazard evaluation that relies mainly on suites of geophysical and shallow geological investigations which include ocean bathymetry using multi-beam echo sounder,sidescan sonar,sub-bottom profiler,magnetic,and 2D-high resolution seismic reflection *** results were integrated to draw inferences about the risk potential of the *** the bathymetric survey,water depths were found to range from 345 m to 650 m LAT,with seabed relief being 305 *** depth at the proposed well location was found to be approximately 450 m and the seabed was found to slope in the northwestern *** gradient was computed as 0.05 across the whole *** shallow sub-surface stratigraphic units,labelled A and B,were *** A was directly beneath the seafloor and seemed to be composed mainly of clayey/silty *** thickness ranged from 6 m to 70 m across the study *** B appeared to be a layer of sand and its total thickness was not fully *** kinks and displacements at the flanks of seabed undulations/depressions on subbottom profiler sections suggested that the depressions may be *** the map generated from the marine magnetic data,a magnetic fault was delineated and this appeared to be coincident with the shallower of the two buried faults on the cross-line seismic section cutting through the proposed well-head *** seismic reflection data presented this fault as being *** of the faults mapped,especially the buried ones,appeared to be inactive except a *** with mapped amplitude anomalies are to be avoided during rig-mobilization *** e

关键词： Pre-rig mobilisation Ocean bathymetry Side-scan sonar Sub-bottom profiler Marine magnetic survey Amplitude anomalies

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Effects of reduction on the catalytic performance of limonite ore

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Journal of Energy Chemistry 2018年第5期27卷 1489-1495页

作者： Keisuke Abe ade Kurniawan Takahiro Nomura Tomohiro Akiyama Graduate school of Engineering Hokkaido University Sapporo 060-8628 Japan Center for Advanced Research of Energy and Materials Hokkaido University Sapporo 060-8628 Japan

The catalytic performance of Ni-containing limonite ore in the dry reforming reaction of methane （CH_4＋CO_2→2H_2＋2CO） was determined before and after hydrogen reduction, and under a flow of hydrogen. After hydrogen reduction, the limonite ore exhibited higher catalytic performance, because of the formation of Fe-Ni. However, the Fe in Fe-Ni was readily oxidized by the input CO_2 gas. resulting in a rapid decrease in the catalytic performance of limonite ore. The performance de- crease was due to a decrease in the Ni surface area; Ni could not dissolve in iron oxides and this caused segregation in the iron oxides. When the reaction was conducted under a hydrogen flow, the Fe-Ni was formed and maintained. Ni was highly dispersed in the Fe-Ni phase, resulting in greater surface area of Ni and higher conversion rate of CH_4 and CO_2. The catalytic performance of the limonite ore was inferior to the Ni/Al_2O_3 catalyst because the effect of catalyst support was small, however, the limonite ore was more stable during catalytic use and much cheaper than the Ni/Al_2O_3.

关键词： Limonite Dry reforming Fe-Ni Catalyst

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Liveability experience of mountain-base residents:the case of Idi-Ori-Shasha Mountain,Ibadan,Nigeria

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Journal of Mountain Science 2022年第9期19卷 2693-2702页

作者： Taiwo Oladapo BABALOLA Abubakar Alhaji AHMED Ayobami Abayomi POPOOLA Tolulope Mary adeDEJI olajumoke Ololade TUNJI-adePOJU Institute of Humanities Governance and Social SciencesPan African University(PAUGHSS)Yaounde 900286Cameroon Department of Urban and Regional Planning University of IbadanIbadan 110115Nigeria SARChI Chair for Inclusive Cities University of KwaZulu-NatalDurban 2954South Africa Department of Sociology University of IbadanIbadan 110115Nigeria

The increasing influx of people to mountain base environments has opened up the area to a myriad of problems that threaten the liveability of the residents and the sustainability of the ***,sufficient empirical investigations have not looked at the particular issues that threaten their liveability *** the case of Idi-OriShasha mountain,this study examined the condition of informal urbanization at the mountain-base and equally investigated residents’living *** conducted questionnaire survey with closed and open-ended questions to collect data from 65 out of 533 houses within a buffer of 250 m from the mountain and retrieved 50 completed householdhead *** results revealed that majority of the residents were not satisfied living at the mountainbase because of the inadequate facilities that have contributed to their current living ***,mountain-base residents are liable to many liveability threats such as noise pollution,sleeplessness,building/wall cracks,destructive erosion,and water *** study recommends adequate infrastructural provision intervention in the area in order to upscale liveability dimensions and general residents’living ***,similar studies could be conducted elsewhere for validation and comparison of findings.

关键词： Liveability Mountain Urbanization Living experience

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Black phosphorus nanoflakes as morphology modifier for efficient fullerene-free organic solar cells with high fill-factor and better morphological stability

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Nano Research 2019年第4期12卷 777-783页

作者： Weitao Yang Long Ye Fenfa Yao Chuanhong Jin Harald ade Hongzheng Chen State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization& Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Department of Physics Organic and Carbon Electronics Laboratory (ORaCEL) North Carolina State University Raleigh NC 27695 USA State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

Morphology of the donor:acceptor blend plays a critical role in the photovoltaic performance of the organic solar cells (OSCs).Herein,liquid-phase-exfoliated black phosphorus nanoflakes (BPNFs),for their outstanding electronic property and good compatibility to solution process,were applied to fullerene-free OSCs as morphology *** by X-ray scattering measurements,the PTB7-Th:IEICO-4F blends incorporated with BPNFs exhibit more ordered π-π stacking and promoted domain purity,contributing to lower charge transport resistance and suppressed charge recombination within the bulk heterojunction (BHJ).As a result,a high fill factor (FF) of 0.73 and a best power conversion efficiency (PCE) of 12.2% were obtained for fullerene-free OSCs based on PTB7-Th:IEICO-4F blends incorporating with BPNFs,which is among the highest FF of the as-cast fullerene-free OSCs with PCE over 12%.More importantly,the embedded BPNFs help to improve the morphological stability of the devices probably by retarding the phase mixing in the BHJ during the aging ***,analogous enhancements were observed in another fullerene-free OSCs based on PBDB-T:*** a word,this work provides a new strategy of using two-dimentional nanoflakes as facile and universal morphology modifier for efficient fullerene-free OSCs.

关键词： fullerene-free organic solar cells black phosphorus nanoflakes morphology tuning device stability

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Fortifying Healthcare Data Security in the Cloud:A Comprehensive Examination of the EPM-KEA Encryption Protocol

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Computers, Materials & Continua 2024年第5期79卷 3397-3416页

作者： umi Salma Basha Shashi Kant Gupta Wedad Alawad SeongKi Kim Salil Bharany Computer Science and Information Technology Jazan UniversityJazanSaudi Arabia CSE Eudoxia Research UniversityNew CastleUSA Department of Information Technology College of Computer ScienceQassim UniversityBuraydahSaudi Arabia National Center of Excellence in Software Sangmyung UniversitySeoulKorea Department of Computer Science and Engineering Lovely Professional UniversityPhagwaraPunjabIndia

A new era of data access and management has begun with the use of cloud computing in the healthcare *** the efficiency and scalability that the cloud provides, the security of private patient data is still a majorconcern. Encryption, network security, and adherence to data protection laws are key to ensuring the confidentialityand integrity of healthcare data in the cloud. The computational overhead of encryption technologies could leadto delays in data access and processing rates. To address these challenges, we introduced the Enhanced ParallelMulti-Key Encryption Algorithm (EPM-KEA), aiming to bolster healthcare data security and facilitate the securestorage of critical patient records in the cloud. The data was gathered from two categories Authorization forHospital Admission (AIH) and Authorization for High Complexity *** use Z-score normalization forpreprocessing. The primary goal of implementing encryption techniques is to secure and store massive amountsof data on the cloud. It is feasible that cloud storage alternatives for protecting healthcare data will become morewidely available if security issues can be successfully fixed. As a result of our analysis using specific parametersincluding Execution time (42%), Encryption time (45%), Decryption time (40%), Security level (97%), and Energyconsumption (53%), the system demonstrated favorable performance when compared to the traditional *** suggests that by addressing these security concerns, there is the potential for broader accessibility to cloudstorage solutions for safeguarding healthcare data.

关键词： Cloud computing healthcare data security enhanced parallel multi-key encryption algorithm(EPM-KEA)

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