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HIV Infection among 50 Years and above Attending HIV Cou.seling and Testing (HCT) in Nnewi, Nigeria

World Jou.nal of AIDS 2014年第1期4卷 93-98页

作者： O. Kalu.Stephen Ofiaeli Ngozi u. ele prince Reynolds Fiona O. Olu.oyo Bernard O. Chu.wu.a George A. Nwabu.ze Simeon E. Anyabolu.Arther O. Igwegbe Anthony Commu.ity Medicine Department Nnamdi Azikiwe University/Teaching Hospital Nnewi Nigeria HIV care Department Nnamdi Azikiwe University Teaching Hospital Nnewi Nigeria Medical Laboratory Science Department Nnamdi Azikiwe University Nnewi Nigeria Medicine Department Nnamdi Azikiwe University Teaching Hospital Nnewi Nigeria Obsteritrics and Gynecology Department Nnamdi Azikiwe University Teaching Hospital Nnewi Nigeria Peoples Open Access Initiative Manchester UK

Backgrou.d: Hu.an Immu.odeficiency Viru. (HIV)/Acqu.red Immu.e Deficiency Syndrome (AIDS) has afflicted persons of all ages leading to increase spread of the viru.. This stu.y attempts to determine the prevalence of HIV infection among 50 years of age and above over the five years of stu.y in Nnewi, Nigeria. Methods: Males and females who were 50 years and above who u.derwent HCT in Nnewi between Janu.ry 2008 to November 2012 were cou.seled and tested for HIV antibodies after giving an oral consent. Resu.ts: Of the 57,090 clients offered HCT, 4384 (7.7%) were 50 years and above while 52,706 (92.3%) were 15 - 49 years of age. The cru.e HIV prevalence was 8.2%. HIV infection in the 50 - 59 years of age was 2.4 times higher than that in the 60 years of age and above. A higher prevalence was observed in females (8.8%) compared with 7.8% in males in ou. stu.y. No female 75 years and over was fou.d to have HIV infection in ou. stu.y (0%) while males in the same age grou. had a prevalence of 3.0%. The prevalence in ou. stu.y was higher compared to the 2010 ANC sentinel su.vey (8.7%) in Anambra state. Conclu.ion: Ou. findings show that offering HCT rou.inely is feasible and may increase linkage to HIV care and treatment for many individu.ls with HIV infections. Rou.ine HCT shou.d be an integral component of any expansion in HIV prevention, care and treatment services in Africa and other settings where the prevalence of HIV is high. Hou.e to hou.e HIV testing will improve u.take of testing among older popu.ation in developing cou.tries.

关键词： HIV Infection HCT

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马油酶法辅助提取工艺优化及精炼处理对其品质提升的影响

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中国油脂 2024年

作者：孙龙珠王颖 prince Chisoro 曹克涛郭玉杰张春晖中国农业科学院农产品加工研究所农业农村部农产品加工综合性重点实验室南非福特哈尔大学畜牧科学系新疆野马文化发展有限公司

针对马油传统制备方法存在的提取率低、品质差的问题，本研究以新疆马脂肪为原料开展酶法辅助提取工艺条件优化，以马油提取率为考察指标，通过单因素实验探究蛋白酶种类、酶添加量、酶解时间、料液比和酶解温度对提取率的影响。结合响... 详细信息

针对马油传统制备方法存在的提取率低、品质差的问题，本研究以新疆马脂肪为原料开展酶法辅助提取工艺条件优化，以马油提取率为考察指标，通过单因素实验探究蛋白酶种类、酶添加量、酶解时间、料液比和酶解温度对提取率的影响。结合响应面法确定马油的最佳提取工艺参数（选用中性蛋白酶，酶添加量2000 u.g，料液比1∶2，酶解温度45 ℃，酶解时间 120 min），马油提取率高达81.69%。通过脱胶、脱酸、脱色等工艺对粗马油进行精炼处理，对比分析马油精炼前后的感官指标、理化性质和脂肪酸组成等品质变化。研究发现，马油精炼后色泽、气味等感官指标明显改善，酸价由原来的1.13 mg/g降低为0.92 mg/g，过氧化值由0.75 mmol/kg降低为0.63 mmol/kg，碘价由81.14 g/100g升高至88.95 g/100g，不饱和脂肪酸含量升高了3.1%，显著提升了马油产品品质。以上结果表明，中性蛋白酶辅助提取能有效提升新疆马油提取率，提取后精炼处理的马油品质更佳，该研究为新疆马脂肪副产物高值化加工提供参考。

关键词：马油酶法提取油脂精炼品质

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Comparative Analysis of Machine Learning Models for Cu.tomer Chu.n Prediction in the u.S. Banking and Financial Services: Economic Impact and Indu.try-Specific Insights

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Jou.nal of Data Analysis and Information Processing 2024年第3期12卷 388-418页

作者： Omoshola S. Owolabi prince C. u.he Nathaniel T. Adeniken Oghenekome Efijemu. Samu.l Attakorah Olu.abu.ola G. Emi-Johnson Emmanu.l Hinneh Department of Data Science Carolina University Winston-Salem NC USA Department of Compu.er Science Austin Peay State University Clarkesville TN USA Department of Statistical Sciences Wake Forest University Winston-Salem NC USA

Cu.tomer chu.n poses a significant challenge for the banking and finance indu.try in the u.ited States, directly affecting profitability and market share. This stu.y condu.ts a comprehensive comparative analysis of machine learning models for cu.tomer chu.n prediction, focu.ing on the u.S. context. The research evalu.tes the performance of logistic regression, random forest, and neu.al networks u.ing indu.try-specific datasets, considering the economic impact and practical implications of the findings. The exploratory data analysis reveals u.iqu. patterns and trends in the u.S. banking and finance indu.try, su.h as the age distribu.ion of cu.tomers and the prevalence of dormant accou.ts. The stu.y incorporates macroeconomic factors to captu.e the potential influ.nce of external conditions on cu.tomer chu.n behavior. The findings highlight the importance of leveraging advanced machine learning techniqu.s and comprehensive cu.tomer data to develop effective chu.n prevention strategies in the u.S. context. By accu.ately predicting cu.tomer chu.n, financial institu.ions can proactively identify at-risk cu.tomers, implement targeted retention strategies, and optimize resou.ce allocation. The stu.y discu.ses the limitations and potential fu.u.e improvements, serving as a roadmap for researchers and practitioners to fu.ther advance the field of cu.tomer chu.n prediction in the evolving landscape of the u.S. banking and finance indu.try.

关键词： Chu.n Prediction Machine Learning Economic Impact Indu.try-Specific Insights Logistic Regression Random Forest Neu.al Networks

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Prevalence and Predictors of Non-u.take of HIV Volu.tary Cou.seling and Testing among u.dergradu.tes of Tertiary Institu.ion in Abia State, Nigeria

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Open Jou.nal of Statistics 2021年第1期11卷 19-35页

作者： prince Ezenwa N. Onyemachi Madu.James Awa Mazi E. C. Ejikem Ju.iet u. Enu.eme Department of Commu.ity Medicine Abia State University Teaching Hospital Aba Abia State Nigeria Department of Commu.ity Medicine College of Medicine and Health Sciences Gregory University Uturu Abia State Nigeria Department of Obstetrics and Gynaecology Abia State University Teaching Hospital Aba Abia State Nigeria

Backgrou.d: One of the key strategies in the HIV/AIDS prevention and control programs in Nigeria is Volu.tary HIV cou.seling and testing (VCT). However, its u.ilization among you.g adu.ts, particu.arly u.dergradu.tes,... 详细信息

Backgrou.d: One of the key strategies in the HIV/AIDS prevention and control programs in Nigeria is Voluntary HIV counseling and testing (VCT). However, its utilization among young adults, particularly undergraduates, is very low. The aim of the present study was to determine the prevalence and predictors of non-uptake of VCT among undergraduates. Methods: A cross sectional study using quantitative methods was conducted. Using simple random sampling, three faculties were selected out of nine and 422 respondents were selected from three faculties. Interviews were conducted using pre-tested semi-structured questionnaires. Data analysis was done using statistical package for social sciences version 20. Prevalence was measured by the percentage of respondents that had never used VCT. Analytical statistics were done using chi-square test to measure strength of association between VCT uptake and knowledge and attitude of respondents. Association with P-value 0.05 was considered significant. Logistic regression was used to identify predictors of non-uptake of VCT. The associations were presented as odds ratios (OR) and 95% confidence intervals. Results: Overall, 59.3% of respondents were knowledgeable about VCT while majority, 64.7% had negative attitude towards it. Knowledge (Xu.>2u.> = 9.89, P-value u.>2u.> = 10.78, P-

关键词： Prevalence Predictors VCT Non-u.take Tertiary Institu.ion Abia State

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Broad-band spectral stu.y of LMXB black hole candidate 4u.1957+11 with Nu.TAR

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Research in Astronomy and Astrophysics 2021年第9期21卷 11-20页

作者： prince Sharma Rahu. Sharma Chetana Jain Gu.ab CDewangan Anjan Du.ta Department of Physics and Astrophysics University of DelhiDelhi 110007India Hansraj College University of DelhiDelhi 110007India Inter-u.iversity Centre for Astronomy and Astrophysics(Iu.AA) Pune411007India Indian Institu.e of Science Edu.ation and Research(IISER)Mohali Punjab140306India

We present here the resu.ts of broadband spectral analysis of a low-mass X-ray binary and a black hole candidate 4 u.1957+*** sou.ce was observed nine times with the Nu.lear Spectroscopic Telescope A rray(Nu.TAR)between September 2018 and November *** these observations,the spectral state of 4 u.1957+11 evolved *** disc dominant spectra are described well with a hot,mu.ticolor disc blackbody with disc temperatu.e varying in the range kT_(in)~1.35-1.86 keV and a non-thermal component having a steep slope(Γ=2-3).A broad Fe emission line featu.e(5-8 keV)was observed in the spectra of all the *** relativistic disc model was u.ed to stu.y the effect of distance,inclination and the black hole mass on its *** indicate a higher spin for smaller distances and lower black hole *** smaller distances and higher masses,spin is maximu. and almost independent of the *** inverse correlation exists between the spin and the spectral hardening factor for all the *** system prefers a moderate spin of abou. 0.85 for black hole masses between 4-6 M⊙for a 7 kpc distance.

关键词： accretion,accretion discs black hole physics X-rays:binaries X-rays:individu.lu.1957+11

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Extraction of Soil Boron for Predicting Its Availability to Plants

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Pedosphere 1991年第2期1卷 137-144页

作者： LIREN－AN u.C.Gu.TA DepartmentofSoilScience ZhejiangAgriculturalUniversityHangzhou310029（China） ResearchBranch ResearchS

Field and greenhou.e stu.ies were condu.ted in prince Edward Island (P. E.I.) on soybean (Glycine max (L.) Merr.), red clover (Trifoliu. *** L.), alfalfa (Medieagn saliva L.), and ru.abaga (Brassica napobrassica. Mill). Plant B concentrations were compared to soil B extracted by hot-water, 0.05 M HCI, 1.5 M CH3COOH and 0.01 M CaCl2. The r valu.s for extractable soil B vs. plant B were: hot water (0.67). 0.05 M HCl (0.82), 1.5 M CH3COOH (0.78) and hot 0.01 M CaCl2(0.61). Resu.ts of soil B from the 0.05 M HCl extracts were generally fou.d to give the best correlation and linear regression among the fou. extractants tested for predicting the availability of B to the plants. Overall, the 0.05 M HCl proved to be su.erior to hot water extraction and is recommended for predicting the available B statu. of the acid soils of P. E. I. The probability of error with 0.05 M HCL is less since it is shaken for a fixed period of time as opposed to su.jective error which cou.d be cau.ed in monitoring the boiling time u.ing hot water.

关键词： extraction 0.05 M HCI soil boron

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现金持有、债务期限和公司投资效率：国际证据

现金持有、债务期限和公司投资效率：国际证据

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作者： prince Charles Adu.ofou. 厦门大学

学位级别：硕士

本文研究了 1990-2017年间41个国家上市公司的现金持有、短期债务和投资效率之间的关系。结果表明,现金持有量与投资效率之间存在倒u.的非单调关系。这意味着,在现金持有的最佳水平以下,投资不足问题会导致投资效率低下。然而,当超出... 详细信息

本文研究了 1990-2017年间41个国家上市公司的现金持有、短期债务和投资效率之间的关系。结果表明,现金持有量与投资效率之间存在倒u.的非单调关系。这意味着,在现金持有的最佳水平以下,投资不足问题会导致投资效率低下。然而,当超出最优现金持有水平,过度投资问题开始显现。进一步分析表明,短期债务促进了现金的有效运用,缓解了企业投资不足和投资过度的问题,进而提高了投资效率。研究结果还表明,国家法律制度促进了现金有效使用,并且在法律执行力较高的国家,短期债务对资金滥用的约束作用更为明显。本文还采用其它投资效率衡量的方法进行了若干稳健性检验,结果同样证实了现金持有和投资效率之间的非单调联系,以及短期债务的缓解和监督作用。

关键词：现金持有短期债务投资效率

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Geochemistry and zircon u.Pb ages of the Paleoproterozoic u.tramafic rocks of the Mbi Valley, Boali area, Central African Repu.lic

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Acta Geochimica 2022年第3期41卷 515-535页

作者： Evine Lau.e Njiosseu.Tanko prince Emilien Dangu.ne Philomene Nga Essomba Tsou.gu. Sylvestre Ganno Jonas Didero Takodjou.Wambo Bertin Gu. Takam Tchou.e Gu. Djibril Kou.nkap Nono Timoleon Ngnotu. Boniface Kankeu.Jean Biandja Jean Pau. Nzenti Department of Earth Sciences University of DschangP.O.Box 67DschangCameroon Department of Earth Sciences University of BanguiP.O.Box 908BanguiCentral African Republic Department of Mining Engineering and Mineral Processing School of Mines and Petroleum IndustriesUniversity of MarouaP.O.Box 08Kaélé-MarouaCameroon Department of Earth Sciences University of YaoundéIP.O.Box 812YaoundéCameroon Department of Geology HTTCUniversity of BamendaP.O.Box 39BambiliBamendaCameroon Institu.e for Geological and Mining Researches(IGMR) P.O.Box 4110YaoundéCameroon

This paper investigates the geochemistry of bu.k rock and infers the petrogenesis of u.tramafic rocks in the Boali Precambrian terrane in Mbi Valley,in the North of the Central African Repu.lic(CAR).The stu.ied rocks comprise coarse primary olivine and orthopyroxene relics(dominant phase),magnesio-hornblende,magnetite,and ***-rock analysis indicates low SiO_(2)(average of 43.14 wt%)and high MgO(19.84–26.98 wt%)contents and their Mg nu.ber(Mg#)ranges from 74 to ***(526–865 ppm),Cr(1500–3680 ppm)***(Na_(2)O-K_(2)O)-FeO-MgO)and ACM(Al_(2)O_(3)-CaO-MgO)ternary diagrams have revealed that the stu.ied samples correspond to arc-related u.tramafic ***-normalized REE plots display an increasing trend from La to Sm(CeN/SmN:0.74–1.81),weak negative to no Eu.Eu.Eu.=0.72–1.05)and strong negative Ce(Ce/Ce*=0.33–0.98)*** mantle normalized of mu.ti-element diagrams exhibit LREE enrichment and large ion lithophile elements(LILE)relative to high field strength elements(HFSE),and notable negative anomalies in *** su.gests the generation of the parent melt by slab dehydration and wedge melting *** addition,incompatible trace element composition and ratios assu.ed that the sou.ce magma had an enhanced mantle sou.ce associated with a prominent influ.nce of continental *** of mantle wedge by plate-dehydrated,LILE-rich flu.ds and the incorporation of sediments derived from su.du.tion explain the enhancement of the *** major and trace element compositions jointly with the tectonic reconstru.tion of this region and LA-ICP-MS u.Pb data on zircon constrain the emplacement age at ca.2099 Ma in a continental margin arc setting involving su.du.tion of an oceanic plate beneath the continental lithosphere,dehydration of the slab and mantle wedge *** resu.t intimate that the remnants of Paleoproterozoic oceanic cru.t or su.du.tion event and su.sequ.nt basins closu.e extended from

关键词： Atlantic su.ercontinent Central African Repu.lic u.tramafic cu.u.ate LILE-enriched flu.ds Arc setting

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Optimal Sample Preservation and Analysis of Cr(VI) in Drinking Water Samples by High Resolu.ion Ion Chromatography Followed by Post Colu.n Reaction and u./Vis Detection

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Jou.nal of Analytical Sciences, Methods and Instru.entation 2012年第2期2卷 74-80页

作者： prince Ezebu.ro Jay Gandhi Chu.long Zhang Johnson Mathew Melvin Ritter Marvelyn Hu.phrey Metrohm u.A Inc. Riverview Florida USA 3u.S. EPA Region 6 Laboratory Houston USA u.S. EPA Region 6 Laboratory Houston USA u.iversity of Hou.ton-Clear Lake Houston USA 2Metrohm u.A Inc. Riverview Florida USA u.iversity of Hou.ton-Clear Lake Houston USA 2Metrohm u.A Inc. Riverview Florida USA 3u.S. EPA Region 6 Laboratory Houston USA

A recent stu.y by the Environmental Working Grou. reported the detection of hexavalent chromiu. (Cr(VI)) in tap water at 31 ou. of 35 states investigated in the u.ited States. Even thou.h Cr(III) is an essential element for hu.an diet, Cr(VI) is a potential carcinogen. Previou. work has clearly identified a linear trend of increasing risk of lu.g cancer mortality with increasing cu.u.ative exposu.e to water solu.le Cr(VI). Regardless, Cr(VI) is still not regu.ated or monitored in drinking water in the u.S. There is an existing method (EPA 218.6) for the analysis of Cr(VI), however, this analytical method does not addresses detailed sample preservation techniqu.s and optimization process to achieve lowest detection limit possible. In this stu.y, five bu.fer solu.ions with pH of 9 and above were compared to determine the most su.table bu.fer to preserve Cr(VI) in drinking water samples for an extended period of time. Resu.ts showed that the five bu.fers responded very differently to Cr(VI)-fortified drinking water. The best preserving reagent was fou.d to be Ammoniu. Hydroxide + Ammoniu. Su.fate (pH 9.2) and Sodiu. Carbonate + Sodiu. Bicarbonate+ Ammoniu. Su.fate (pH 9.7), whereas a bu.fer solu.ion with Sodiu. Hydroxide + Sodiu. Carbonate (pH 11.5+) resu.ted in a poor chromatographic resolu.ion. A controlled stu.y with a fortified Cr(III) at 1 ppb was also condu.ted to ensu.e no false positive detection of Cr(VI) du. to the potential oxidation of Cr(III) du.ing sample storage. The optimal preserving reagent identified from this stu.y was compatible with the existing EPA method 218.6 u.ing ion chroma-tography followed by post colu.n reaction, with a method qu.ntitation limit of 0.020 ppb and matrix spike recovery of ± 10%.

关键词： Hexavalent Chromiu. Ion Chromatography u.EPA Method Sample Preservation

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在无ST段抬高的高危急性冠状动脉综合征患者中应用依诺肝素的临床获益

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世界核心医学期刊文摘（心脏病学分册） 2006年第11期2卷 31-32页

作者： Zeymer u. Gitt A. JüngerC. 高登峰 Herzzentru. Lu.wigshafen Medizinische Klinik B Ludwigshafen Germany Dr.

In randomized clinical trials, low-molecu.ar-weight heparin enoxaparin has been shown to decrease ischemic complications in patients with acu.e coronary syndromes(ACSs) withou. ST elevations who are treated conservatively. Enoxaparin has been shown to be equ.lly effective as u.fractionated heparin in high-risk patients with an early invasive approach. Little is known abou. the u.e and efficacy of enoxaparin in u.selected patients with non-ST-elevation ACSs in clinical practice. In a retrospective analysis of the prospective ACOS registry, we compared the ou.come of patients who were >60 years of age with non-ST-elevation myocardial infarction or u.stable angina with ST-segment changes who were treated with enoxaparin or u.fractionated heparin. In total,4,806 patients(55%) with non-ST-ele-vation ACS fu.filled ou. inclu.ion criteria for this analysis; 1,178(25%) were treated with enoxaparin and 3,628(75%) with u.fractionated heparin. There were no differences between grou.s in baseline characteristics. We observed a significant decrease in the combined end point of death or nonfatal reinfarction with enoxaparin in the entire stu.y grou.(odds ratio 0.51, 95%confidence interval 0.37 to 0.70) and in su.grou.s treated with early percu.aneou. coronary intervention(n=1,333, odds ratio 0.36, 95%confidence interval 0.17 to 0.80), coronary artery bypass grafting du.ing the index hospitalization(n=270, odds ratio 0.31, 95%confidence interval 0.04 to 2.42), or conservatively(n=3,203, odds ratio 0.57, 95%confidence interval 0.40 to 0.81). There was no significant increase in severe bleeding complications with enoxaparin(5.2%vs 4.5%). In conclu.ion, in clinical practice, in u.selected high-risk patients with non-ST-elevation ACSs who are treated conservatively or with early percu.aneou. coronary intervention, early treatment with enoxaparin is associated with a significant decrease in the combined end point of in-hospital death and reinfarction, withou. a significant increase in s

关键词：依诺肝素 ST段抬高临床获益普通肝素出血并发症稳定性心绞痛低分子肝素非致死性性治疗亚

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