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    题名 作者 年代 出处 被引量
1Analysis on Technical Efficiency of Rice Farms and Its Influencing Factors in South-western of Niger显示文摘The present study focused on analyzing the technical efficiency of rice farms in southwest of Niger. The data from January to March 2015 survey of 148 ms in three districts of south-western of Niger were analyzed by using DEA-Tobit two-step method. In the first step, data envelopment analysis(DEA) was applied to estimate technical, pure technical and scale efficiency. In the second step, Tobit regression was used to identify factors affecting technical efficiency. The results showed that rice producers in southwest of Niger could reduce their inputs by 52% and still produce the same level of rice output. The Tobit regression showed that factors, such as farm size, experience in rice farming, membership of cooperative, main occupation and land ownership had a direct impact on technical efficiency.Oumarou Boubacar Zhou Hui-qiu Muhammad Abdullah Rana Sidra Ghazanfar 2016Journal of Northeast Agricultural University(English Edition)2016,23,4:5
2基于伪辛几何空间的带仲裁的认证码构造(英文)显示文摘带仲裁的认证码既要防止敌手的欺骗,又要防上收方和发方的互相欺骗.给出一种由伪辛几何空间构造带仲裁的认证码的方法,并计算了有关参数,分析了各种攻击成功的概率.Boubacar Abba 游宏 2006黑龙江大学自然科学学报2006,23,5:4
3Factors associated with coverage of praziquantel for schistosomiasis control in the communitydirect intervention (CDI) approach in Mali (West Africa)显示文摘Background:Despite the progress made in the control of Neglected Tropical Diseases(NTD),schistosome and soil-transmitted helminth infections are far from being effectively managed in many parts of the world.Chemotherapy,the key element of all control strategies,is faced with some difficulties in terms of access to treatment.Our study aims to describe the factors involved in the success or failure of the community-directed intervention(CDI)approach through control programmes,which aims to achieve consistent high coverage at affordable and sustainable costs in endemic areas.Methods:The CDI approach was carried out from December 2007 to October 2008 in ten villages of the district of Diéma,Mali.At inclusion,each child part of the study’s sample was interviewed and submitted for a physical examination.The study focused on:data collection,treatment of the eligible population,evaluation of the treatment coverage,performance of community drug distributors(CDDs),and the involvement and perception of populations.Results:A total of 8,022 eligible people were studied with a mean coverage rate of 76.7%.Using multiple regression,it was determined that receiving praziquantel as treatment was associated with five factors:belonging to the Fulani or Moorish ethnic minority versus the Bambara/Soninke,use of the central versus the house-to-house drug distribution mode,the ratio of the population to the number of CDDs,the lack of supervision and belonging to the age group of 15 years or above(p<0.05).As well as that,it was found that the presence of parallel community-based programmes(HIV,tuberculosis)that provide financial incentives for community members discouraged many CDDs(who in most cases are volunteers)to participate in the CDI approach due to a lack of incentives.Conclusions:The findings indicate that the success of the CDI approach depends on,amongst other things,the personal characteristics of the respondents,as well as on community factors.Abdoulaye Dabo Boubacar Bary Bourema Kouriba Oumar Sankaré Ogobara Doumbo 2013Infectious Diseases of Poverty2013,2,1:3
4Quantitative Analysis of Faults in Huizhou Sub-basin, Pearl River Mouth Basin显示文摘This study used 2 D seismic profiles to investigate the Cenozoic evolution of faults in the Huizhou Sub-basin. It aims to define the basin structure style through describing the geometric features of the faults and quantitatively analyzing their activities. The results indicate that the boundary faults in the Huizhou Sub-basin display en echelon arrangement in plan view, which indicates that, it was caused by a kind of oblique extension. Calculating the fault slips shows long-term activities of faults occurred in the basin, and some boundary faults kept active after 5.5 Ma. The evolution history of the fault system is reconstructed. Initially, during the Eocene–Early Oligocene, mainly NNE-NE and NW trending faults and NE striking grabens and half-grabens formed in the basin and a series of faults system controlled the deposition. During the Late Oligocene–Early Miocene, the structural activities were relatively weak, the fault activity and the fault growth rate decreased sharply. Finally, in the late stage from Late Miocene to the present, the structure movement was re-activated, and some faults were also reactivated. Our study will help better understand the structural features and evolution of the petroleum-bearing basins in the northern margin of the South China Sea.Boubacar Hamidou Leyla Junxia Zhang Linlong Yang 2018Journal of Earth Science2018,29,1:2
5Etiology, Pathology, Management and Prognosis of Chronic Pancreatitis in Chinese Population: A Retrospective Study显示文摘The purpose of this study was to investigate the etiology, pathological characteristics, management and prognosis of chronic pancreatitis in the Chinese population. The clinical data of 142 patients with chronic pancreatitis were retrospectively studied. All patients were of Chinese nationality and hospitalized from January 2008 to December 2011. Their ages ranged from 14 to 76 years, with a mean of 43 years. Of 142 patients, there were 72 cases of obstructive chronic pancreatitis(50.70%), 19 cases of alcoholic chronic pancreatitis(13.38%), 14 cases of autoimmune pancreatitis(9.86%) and 37 cases of undetermined etiology(26.06%). Pathologically, the average inflammatory mass diameter was 3.8±3.3 cm, biliary obstruction occurred in 36 cases, gall stones in 70 cases, calcification in 88 cases, ductal dilatation in 61 cases, side branch dilatation in 32 cases, ductal irregularity in 10 cases, lymphocytic inflammation in 23 cases, obliterative phlebitis in 14 cases, extra pancreatic lesion in 19 cases and fibrosis in 142 cases. Location of pancreatic lesion in the region of head(n=97), neck(n=16), body(n=12), tail(n=15) and whole pancreas(n=2) influenced the choice of surgical procedures. Ninety-four patients(66.20%) received surgical treatment and 33.80% received other treatments. After operation, 80.85% of 94 patients experienced decreased pain, and 8.51% of 94 showed recovery of endocrine function but with a complication rate of 12.77%. All the operations were performed successfully. According to the pain scale of European Organization for Research and Treatment of Cancer(QLQ-C30) a decrease from 76±22 to 14±18 was observed. Etiology, pathological characteristics, management and prognosis of chronic pancreatitis in the Chinese population vary from others.Soriba Naby Camara Sonam Ramdany 赵刚 勾善淼 熊炯炘 杨智勇 殷涛 杨明 Oumar Taibata Balde Ahmed Boubacar Barry Seid.Adji 李想 金岩 吴河水 王春友 2015Journal of Huazhong University of Science and Technology(Medical Sciences)2015,35,3:2
6En Echelon Faults and Basin Structure in Huizhou Sag, South China Sea: Implications for the Tectonics of the SE Asia显示文摘The Huizhou sag is situated on the continental shelf of the northern continental margin of the South China Sea. In this paper we present a grid of reflection seismic and well data to characterize the basin structure and prominent unconformities. We employ EBM and 2DMOVE softwares to explore the subsidence history and stratigraphic development history of the basin. We found a rapid subsidence period since 15.5 Ma. Moreover, we calculated the stretching factors of the upper crust and the whole crust in the Huizhou sag. The results show the values are 1.10–1.13 and 1.08–1.31, respectively, indicating faulting in Huizhou sag is relatively small. It is noteworthy that the faults map reveals en echelon distribution at the north and south margins of the basin. We suggest en echelon faults here are caused by the subduction of Proto-South China Sea toward NW Borneo block and cease of the South China Sea. Considering the pronounced unconformities, subsidence rates, fault activities and sediment thickness, the Cenozoic tectonic evolution of the basin can be divided into rifting(49–32 Ma), post-rifted(32–15.5 Ma) and rapid subsidence(15.5–0 Ma) stages. Our study will shed new light on the tectonics of SE Asia and petroleum exploration in the South China Sea.Boubacar Hamidou Leyla Jianye Ren Jing Zhang Chao Lei 2015Journal of Earth Science2015,26,5:2
7A survey of toxic plants on the market in the district of Bamako, Mali: traditional knowledge compared with a literature search of modern pharmacology and toxicology显示文摘Ababacar Maiga Drissa Diallo Seydou Fane Rokia Sanogo Berit Smestad Paulsen Boubacar Cisse 2004Journal of Ethnopharmacology2004,,1:1
8Nitro-Phenlactone, a Carlactone Analog with Pleiotropic Strigolactone Activities显示文摘Kun-Peng Jia Boubacar A. Kountche Muhammad Jamil Xiujie Guo Valentine O, Ntui Andreas REffenacht Soizic Rochange Salim AI-Babili 2016Molecular Plant2016,9,9:1
9非洲马里女性宫颈癌前病变联合筛查的调查分析显示文摘目的筛查西非马里女性宫颈癌前病变的流行病学特征,为制定相应的干预措施提供依据。方法筛查对象来自西非马里2015年1月-2017年11月年龄为(39. 85±14. 21)岁女性1 830例,进行妇科常规检查、醋酸肉眼观察(VIA)、碘液染色肉眼观察法(VILI)、宫颈细胞学、阴道镜检查及组织病理学筛查。结果 1 830例VIA/VILI检测的敏感度为87. 67%(128/146),特异度为71. 38%(1 202/1 684); 610例细胞学宫颈癌前病变阳性检出率为20. 98%,其中首次性交年龄为15岁~20岁患者的发生癌前病变阳性检出率为10. 49%;年龄为40岁~50岁的癌前病变阳性检出率为6. 39%; 125例女性组织学宫颈癌前病变阳性检出率为76. 19%,CINⅡ及以上级别病变阳性检出率为55. 56%。结论通过本次对子宫颈癌前病变的调查发现导致宫颈病变高发与一夫多妻、首次性交年龄、医疗卫生等因素有关。唐咏梅 王乐见 Boubacar Sidiki I.Dramé Halidou M koné Mohamed A Maiga 傅亚军 2018中国卫生检验杂志2018,28,21:1
10Marked differences in the prevalence of chloroquine resistance between urban and rural communities in Burkina Faso显示文摘Peter E. Meissner Germain Mandi Frank P. Mockenhaupt Steffen Witte Boubacar Coulibaly Ulrich Mansmann Claudia Frey Heiko Merkle Juergen Burhenne Ingeborg Walter-Sack Olaf Müller 2007Acta Tropica2007,,1:1
11Soil nutrient depletion by agricultural production in Southern Mall 显示文摘Floris P Boubacar T 1993Nutrient Cycling in Agroecosystems1993,36,1:1
12Exceptional diversity, maintenance of polymorphism, and recent directional selection on the APL1 malaria resistance genes of Anopheles gambiae显示文摘Susan M R Michelle M R Boubacar C 2011PLOS Biology2011,9,10:1
13Partial replacement of asphalt binder with bio-binder: characterisation and modification显示文摘ElhamH. Fini ImadL. Al-Qadi Zhanping You Boubacar Zada J. Mills-Beale 2012International Journal of Pavement Engineering2012,,6:1
143-Hydroxycarlactone, a Novel Product of the Strigolactone Biosynthesis Core Pathway显示文摘Lina Baz Narumi Mori Jianinq Mi Muhammad Jamil Boubacar A. Kountche Xiujie Guo Aparna Balakrishna Kun-Peng Jia Martina Vermathen Kohki Akiyama Salim AI-Babili 2018Molecular Plant2018,11,10:1
15Vulnerability for apoptosis in the limbic system after myocardial infarction in rats:a possible model for human postinfarct major depression显示文摘Boubacar Pasto Wann MSc Thierno Madjou Bah MSc Matthieu Boucher MSc 0,,01:1
16Mobile Internet Applications:Impact on Future Wireless Communications System显示文摘Based on the analysis of application status in real network,the trace model of some typical mobile Internet applications data is given and their impact on 2G/3G network is discussed in this paper.Furthermore,in order to support the mobile Internet application efficiently in future,the issues including the impact on the Long Term Evolution (LTE-A) system and some potential solutions for performance optimization are studied.Based on the trace data model of IM traffic,the performacne evaluaiton of LTE-A system shows that some specific configuration machanisms can play an important role in improving network system efficiency in the case of IM traffic.Gao Youjun Yang Ning Cui Chunfeng Kimba Dit Adamou Boubacar 2012China Communications2012,9,4:1
17主理想整环上对称矩阵的非结合代数自同构(英文)显示文摘本文研究了一类非结合代数的自同构.利用分式化方法,得到主理想整环上对称矩阵构成的非结合代数的所有自同构形式,并刻画了相应的Jordan自同构.ABBA Boubacar 唐孝敏 2007数学杂志2007,27,1:0
18Determinants of internet addiction among medical students in Casablanca: a cross-sectional study显示文摘Objective:This study aimed to estimate the prevalence and determinants of Internet addiction among medical students at the Faculty of Medicine and Pharmacy of Casablanca,Morocco.Methods:This was a cross-sectional study conducted among students at the Faculty of Medicine and Pharmacy in Casablanca between October and March 2020.An online questionnaire was administered to students to collect data and internet addiction was assessed by the Young questionnaire.A score threshold≥50 was adopted to define addiction.Univariate and multivariate logistic regression analyses were used to identify factors associated with internet addiction.Results:Out of a total of 4093 FMPC students enrolled in the 2020-2021 academic year,506 agreed to participate in this study,including 303 females and 203 males.The mean addiction score assessed on the Young scale was(49.08±16.11).The prevalence of Internet addiction was 44.5%(225/506,95% CI:40% to 49%).Multiple regression analysis showed that being older than 20 years(OR=0.17,95% CI:0.40 to 0.64),being female(OR=1.70,95% CI:1.04 to 2.78),being in the dissertation year(6th year)(OR=5.17,95% CI:2.23 to 11.44),having a history of psychiatric consultation(OR=2.64,95% CI:1.34 to 5.21),having divorced parents(OR=2.64,95% CI:1.05 to 5.87),use of sleeping medication(OR=2.9,95% CI:1.05 to 3.70),sleep disorders(OR=2.06,95% CI:1.25 to 3.79),sleep deprivation(OR=2.26,95% CI:1.39 to 3.65),excessive daytime sleepiness(OR=5.39,95% CI:2.19 to 13.24),anxiety disorders(OR=1.47,95% CI:1.18 to 2.30),duration of internet connection(>4 h)(OR=11.43,95% CI:4.85 to 27.66),and having frequent conflicts with parents(OR=2.37,95% CI:1.49 to 3.79)and friends(OR=0.26,95% CI:0.11 to 0.65)were independently associated with internet addiction.Conclusion:The prevalence of Internet addiction among medical students in Casablanca remains high.Targeted action on the determinants would be of great value in prevention.Boubacar Traore Yassine Aguilo Samira Hassoune Samira Nani 2023Global Health Journal2023,7,2:0
19Efficient Mimics for Elucidating Zaxinone Biology and Promoting Agricultural Applications显示文摘Zaxinone is an apocarotenoid regulatory metabolite required for normal rice growth and development.In addition,zaxinone has a large application potential in agriculture,due to its growth-promoting activity and capability to alleviate infestation by the root parasitic plant Striga through decreasing strigolactone(SL)production.However,zaxinone is poorly accessible to the scientific community because of its laborious organic synthesis that impedes its further investigation and utilization.In this study,we developed easy-to-synthesize and highly efficient mimics of zaxinone(MiZax).We performed a structure-activity relationship study using a series of apocarotenoids distinguished from zaxinone by different structural features.Using the obtained results,we designed several phenyl-based compounds synthesized with a high-yield through a simple method.Activity tests showed that MiZax3 and MiZax5 exert zaxinone activity in rescuing root growth of a zaxinone-deficient rice mutant,promoting growth,and reducing SL content in roots and root exudates of wild-type plants.Moreover,these compounds were at least as efficient as zaxinone in suppressing transcript level of SL biosynthesis genes and in alleviating Striga infestation under greenhouse conditions,and did not negatively impact mycorrhization.Taken together,MiZax are a promising tool for elucidating zaxinone biology and investigating rice development,and suitable candidates for combating Striga and increasing crop growth.Jian You Wang Muhammad Jamil Pei-Yu Lin Tsuyoshi Ota Valentina Fiorilli Mara Novero Randa A.Zarban Boubacar AKountche Ikuo Takahashi Claudio Martinez Luisa Lanfranco Paola Bonfante Angel R.de Lera Tadao Asami Salim Al-Babili 2020Molecular Plant2020,13,11:0
20A 12-year follow-up of intestinal schistosomiasis in pre-school-aged children in Assoni Village, Eastern Senegal显示文摘Background:To monitor the prevalenee of schistosomiasis in school-aged children(SAC),the National Bilharzia Control Program(PNLB)was set up by the Senegalese authorities;however,geographically isolated Bedik ethnic groups that did not benefit from this program were found to be heavily infected with Schistosoma mansoni.This observation led us to implement a new schistosomiasis control program in 2008 under the aegis of the non-governmental organi-zation wLe KaTcedratwand in partnership with the PNLB/WHO to monitor the prevalence of schistosomiasis in this area.In the village of Assoni,where 100%of SAC were infected,analysis of the stools of pre-school-aged children(PSAC)showed that they were massively infected,so we decided to focus our program on them.Monique N'Diaye Boubacar Fode Keita Fode Danfakha Fili Keita Gerald Keita Cheikh Sadibou Senghor Bocar Diop Lamine Diawara Francois Bessin Charlotte Ver net Dominique Barbier Patrick Dewavrin Francis Klotz 2021Infectious Diseases of Poverty2021,10,3:0
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