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Application of Multi-Temporal MODIS NDVI Data to Assess Practiced Maize Calendars in Rwanda

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Journal of Resources and Ecology 2018年第3期9卷 273-280页

作者： MUGABOWINDEKWE maurice MUYIZERE Aline LI Fadong QIAO Yunfeng RWANYIZIRI Gaspard Centre for Geographic Information Systems and Remote Sensing College of Science and Technology University of Rwanda 3900 Kigali Rwanda Department of Environmental Management Bright Green Nature Ltd 2916 Kigali Rwanda Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China College of Resources and Environment University of Chinese Academy of Sciences Beijing 100190 China Department of Geography and Urban Planning College of Science and Technology University of Rwanda 3900 Kigali Rwanda

Crop calendar is an important tool providing relevant information on crops cycles in a specific area for effective agricultural management. Crop calendars vary in different areas given dissimilarities in agro-ecosystems＇ characteristics. This research used multi-temporal MODIS NDVI stratification to assess differences in practiced maize crop calendars in various areas of Rwanda. Four（4） sample NDVI strata dominated by agriculture were purposively chosen, and 433 local farmers were randomly selected from the strata for interviews. The collected information helped to know about their maize planting as well as harvesting dates in order to generate maize calendars per NDVI strata. The generated crop calendars were later classified using k-means unsupervised classification, and produced 4 groupings of practiced maize calendars irrespective of NDVI strata. ANOVA results revealed significant differences between both the generated maize crop calendars by NDVI strata and the practiced crop calendars irrespective of NDVI strata, at p = 0.05. Moreover, chi-square tests and t-tests revealed not only a significant relationship between maize calendars and number of crop growing seasons, but also a significant relationship between maize calendars and NDVI strata, at p = 0.05. Finally, findings of this research contrasted the present conviction that there exist a single general maize calendar all over the country. Instead, the results were in accordance with the fact that Rwanda agro-ecosystems differ from East to West in terms of, mainly, altitude and rainfall patterns variations.

关键词： NDVI data stratification crop calendar maize growing season Rwanda

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基于EKF的PMSM无机械传感器矢量控制

清华大学学报（自然科学版） 2009年第10期49卷 1585-1588页

作者：郑泽东李永东 maurice FADEL 清华大学电机工程与应用电子技术系中国北京100084 法国图卢兹国家理工学院LAPLACECNRS-UMR5213实验室法国图卢兹31071

为了准确估计永磁同步电机(PMSM)的转子位置和转速,并实现无机械传感器矢量控制,提出了一种基于扩展Kalman滤波器(EKF)的转子位置和转速观测器,适合于求解永磁同步电机的非线性方程。观测器状态方程采用转子磁链定向的同步旋转坐标系下... 详细信息

为了准确估计永磁同步电机(PMSM)的转子位置和转速,并实现无机械传感器矢量控制,提出了一种基于扩展Kalman滤波器(EKF)的转子位置和转速观测器,适合于求解永磁同步电机的非线性方程。观测器状态方程采用转子磁链定向的同步旋转坐标系下的电压方程,电感等参数为常数,可以应用于凸极机和隐极机。对扩展Kalman滤波器进行了算法简化,使它可以实用化。把负载转矩作为状态变量,观测器可以同时观测负载转矩,并把观测转矩用作前馈补偿,提高了系统的动态性能。通过实验验证了系统的性能。

关键词：永磁同步电机扩展Kalman滤波器无机械传感器矢量控制负载转矩观测

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Traits allowing some ant species to nest syntopically with the fire ant Solenopsis saevissima in its native range

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Insect Science 2015年第2期22卷 289-294页

作者： Alain Dejean Bruno Corbara Regis Cereghino maurice Leponce Olivier Roux Vivien Rossi Jacques H. C. Delabie Arthur Compin CNRS Ecologie des Forets de Guyane (UMR-CNRS 8172) Campus agronomique BP 316 97387 Kourou cedex Universite de Toulouse UPS INP Ecolab 118 route de Narbonne 31062 Toulouse CNRS-UMR 6023 Laboratoire Microorganismes Genome et Environnement Universite Blaise Pascal Complexe Scientifique des Cezeaux 63177 Aubiere cedex Clermont UniversitY Universite Blaise Pascal LMGE BP 10448 F-63000 Clermont-Ferrand CNRS Laboratoire Ecologie Fonctionnelle et Environnement (UMR-CNRS 5245) 31062 Toulouse France Biological Assessment Section Royal Belgian Institute of Natural Sciences Brussels Belgium IRD Maladies Infectieuses et Vecteurs Ecologie Genetique Evolution et Controle (UMR- IRD 224) Equipe BEES 911 avenue AgropolisBP 64501 34394 Montpellier CIRAD Ecofog (UMR-CIRAD 93) Campus Agronomique 97379 Kourou cedex France U.P.A.Laboratorio de Mirmecologia Conv~nio UESC/CEPLAC C.P. 7 45600-000 Itabuna Bahia Brazil

Supercolonies of the red fire ant Solenopsis saevissima （Smith） develop in disturbed environments and likely alter the ant community in the native range of the species. For example, in French Guiana only 8 ant species were repeatedly noted as nesting in close vicinity to its mounds. Here, we verified if a shared set of biological, ecological, and behavioral traits might explain how these 8 species are able to nest in the presence of S. saevissima. We did not find this to be the case. We did find, however, that all of them are able to live in disturbed habitats. It is likely that over the course of evolution each of these species acquired the capacity to live syntopically with S. saevissima through its own set of traits, where colony size （4 species develop large colonies）, cuticular compounds which do not trigger aggressiveness （6 species） and submissive behaviors （4 species） complement each other.

关键词： ant community fire ants invasive species Solenopsis saevissima species coexistence supercoloniality

Testing Point of Care Portable Data Capture in a Hospital HIV Transmission Prevention Programme and Experience from Computerized Patient Management in a Sub-Saharan Clinic Setting

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Computer Technology and Application 2011年第12期2卷 1015-1022页

作者： Michael Kavuma maurice Mars Management Sciences for Health Plot 15 Princess Anne Drive Bugolobi P.O Box 71419 Kampala Uganda Department of Tele-Health Nelson R Mandela Medical School University of KwaZulu Natal 719 Umbilo Road 4001 DurbanPrivate Bag 7 Congella 4013 South Africa

Clinicians involved in HIV/AIDS （Human Immunodeficiency Virus/Acquired Immune Deficiency Syndrome） prevention of mother to child transmission （PMTCT） programme and research activities can benefit from the advantages that computerized systems add to medical practice even in resource constrained sub-Saharan clinic settings. Their continued use of paper based systems presents clinical data management and patient care challenges. A portable point of care data capture electronic system and a computerized clinic patient management system （CCPMS） were implemented to remedy these challenges. PMTCT report compilation was easier with the portable data collection system whose data were found to be more complete and accurate with a 0.83% error rate compared to a 4.1% error rate in the paper registers. A resounding majority of clinicians preferred using the new CCPMS with many of the view that it improved drug inventory and general clinic management with a positive effect on patient care.

关键词： Testing portable computerized HIV/AIDS (human immunodeficiency virus/acquired immune deficiency syndrome) care systems.

Clinical Practice in Rheumatology

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国外医学情报 2005年第4期26卷 46-47页

作者： Barry,maurice 李军不详中国医学科学院北京协和医院风湿免疫科

在医学领域中，风湿病学是一个重要的日益为人们所关注的专业。本书不是关于风湿病学全面而详尽的宏著，它文字简练，是一本侧重于临床的实用性较强的手册。但在保证内容精炼的同时，也反映出目前对风湿性疾病最新、最先进的认识。

关键词：《风湿病学临床实践》内容评介风湿病学治疗原则社会心理治疗药物治疗

Synthesis of ZnWO4-x xnanorods with oxygen vacancy for efficient photocatalytic degradation of tetracycline

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Progress in Natural Science:Materials International 2018年第4期28卷 408-415页

作者： maurice I.Osotsi Daniel K.Macharia Bo Zhu Zhaojie Wang Xiaofeng Shen Zixiao Liu Lisha Zhang Zhigang Chen State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University State Environmental Protection Engineering Center for Pollution Treatment andControl in Textile Industry College of Environmental Science and Engineering Donghua University

Persistent organic pollutants(POPs)especially tetracycline pose a great threat to human health,and the photocatalytic degradation of tetracycline by ZnWO4nanomaterials has drawn much *** improve the photo-response range and photoactivity,we prepared ZnWO4-xsample with oxygen vacancies by solvothermally treating Zn(NO3)3and Na2WO4in water/ethanol/PEG-400 mixture where ethanol could act as a reducing agent to selectively remove some oxygen atoms from ***4-xsample is composed of nanorods with length of～50 nm and diameter of～20 ***,ZnWO4-xnanorods are brown and exhibit the obviously broadened photoabsorption from ultraviolet(UV)to near infrared(NIR)region,compared with the tradition white ZnWO4nanorod without oxygen vacancies and with UV absorption edge of 365 *** the irradiation of UV or ultraviolet-visible-near infrared(UV–Vis–NIR)light,ZnWO4-xnanorods can photocatalytically degrade 91%or 78%tetracycline,higher than those(67%or 71%)by *** enhanced photocatalytic efficiency can be attributed to the introduction of oxygen vacancies which have been found to reduce photogenerated electron-hole pair recombination and narrow band gap.

关键词： ZnWO4-x Oxygen vacancies Persistent organic pollutants (POPs) Tetracycline Photocatalytic Activity

Free-style puzzle flap as a cross-leg pedicled flap: the concept of re-using a flap in acute burns, a case report

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Burns & Trauma 2018年第1期6卷 67-71页

作者： Kevin Serror Marc Chaouat Golda Romano Magali Schmidt Alice Blet maurice Mimoun David Boccara Department of Plastic Reconstructive Surgery Burn CenterHopital Saint LouisAP-HP 1 Avenue Claude Vellefaux75010 ParisFrance

Background: In well-selected cases, flaps can play a pivotal role in optimizing outcomes in the acute phase of burns. A previous redundant flap could be reused or recycled as a donor site from which a new flap could be raised. Case presentation: We report the case of a patient with full thickness burns on both legs, leading to the exposure of joints of the right ankle and the right foot and left patellar tendon. The right lower extremity was covered with a free musculo-cutaneous latissimus dorsi flap. Then, a musculo-cutaneous cross-leg flap pedicled on the anterior branch and centered on a perforator was harvested from the previous redundant flap to cover the controlateral knee. Conclusion: Sequential flap coverage can be considered in cases of extensive soft tissue defects and particularly in burns. This case illustrates that re-using a redundant part of a previous flap to cover another defect is a safe and interesting alternative in the event of a lack of donor sites or to save donor sites for later reconstruction of contracted burn scars.

关键词： Burns Free flap Pedicled flap Puzzle flap Cross-leg

Genetic polymorphisms predict response to anti-tumor necrosis factor treatment in Crohn's disease

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World Journal of Gastroenterology 2017年第27期23卷 4958-4967页

作者： Uri Netz Jane Victoria Carter maurice Robert Eichenberger Gerald Wayne Dryden Jianmin Pan Shesh Nath Rai Susan Galandiuk Price Institute of Surgical Research the Hiram C.Polk Jr.MD Department of SurgeryUniversity of Louisville School of Medicine Department of Surgery A Soroka University Medical Center Faculty of Health Sciences Ben-Gurion University of the Negev Department of Medicine Division of GastroenterologyHepatology and Nutrition University of Louisville School of Medicine Louisville Department of Bioinformatics and Biostatistics University of Louisville School of Public Health and Information Sciences

To investigate genetic factors that might help define which Crohn’s disease (CD) patients are likely to benefit from anti-tumor necrosis factor (TNF) therapy. METHODSThis was a prospective cohort study. Patients were recruited from a university digestive disease practice database. We included CD patients who received anti-TNF therapy, had available medical records (with information on treatment duration and efficacy) and who consented to participation. Patients with allergic reactions were excluded. Patients were grouped as ever-responders or non-responders. Genomic DNA was extracted from peripheral blood, and 7 single nucleotide polymorphisms (SNPs) were assessed. The main outcome measure (following exposure to the drug) was response to therapy. The patient genotypes were assessed as the predictors of outcome. Possible confounders and effect modifiers included age, gender, race, and socioeconomic status disease, as well as disease characteristics (such as Montreal criteria). RESULTS121 patients were included. Twenty-one were non-responders, and 100 were ever-responders. Fas ligand SNP (rs763110) genotype frequencies, TNF gene -308 SNP (rs1800629) genotype frequencies, and their combination, were significantly different between groups on multivariable analysis controlling for Montreal disease behavior and perianal disease. The odds of a patient with a Fas ligand CC genotype being a non-responder were four-fold higher as compared to a TC or TT genotype (P = 0.009, OR = 4.30, 95%CI: 1.45-12.80). The presence of the A (minor) TNF gene -308 allele correlated with three-fold higher odds of being a non-responder (P = 0.049, OR = 2.88, 95%CI: 1.01-8.22). Patients with the combination of the Fas ligand CC genotype and the TNF -308 A allele had nearly five-fold higher odds of being a non-responder (P = 0.015, OR = 4.76, 95%CI: 1.35-16.77). No difference was seen for the remaining SNPs. CONCLUSIONThe Fas-ligand SNP and TNF gene -308 SNP are associated with anti-TNF treatment

关键词： Anti-tumor necrosis factor Fas ligand Antibody Response Crohn’s disease Single nucleotide polymorphisms Genotype Tumor necrosis factor gene

Biofuel Recovery from Plantain and Banana Plant Wastes:Integration of Biochemical and Thermochemical Approach

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Journal of Renewable Materials 2023年第6期11卷 2593-2629页

作者： Abdulmoseen Segun Giwa Mingqiang Sheng Ndungutse Jean maurice Xinxin Liu Zelong Wang Fengmin Chang Bo Huang Kaijun Wang School of Environment and Civil Engineering Nanchang Institute of Science and TechnologyNanchang330108China School of Infrastructure Engineering Nanchang UniversityNanchang330031China Institute of Environmental Science Shanxi UniversityTaiyuan030006China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China

Globally,fossil fuel dependence has created several environmental challenges and climate ***,creating other alternative renewable and ecologically friendly bio-energy sources is *** biomass has gained significant attention recently as a renewable material for biofuel *** large amounts of plantain and banana plant parts wasted after harvesting,as well as the peels generated daily by the fruit market and industries,demonstrate the potential of bioenergy *** review briefly assesses plantain and banana plant biomass(PBB)generated in the developing,developed,and underdeveloped countries,the consumable parts,and feasible products *** emphasized the advantages and disadvantages of the commonly adopted treatment technologies of composting,incineration,and ***,the utilization of PBB as catalysts in biodiesel synthesis was briefly *** optimize recovery of biofuel,different integration routes of pyrolysis,anaerobic digestion,fermentation,hydrothermal carbonization,hydrothermal liquefaction,and hydrothermal gasification for the valorization of the PBB were *** complex compounds present in the PBB(hemicellulose,cellulose,and lignin)can be converted into valuable bio-products such as methane gas and bio-ethanol for bioenergy,and nutrients to promote bioactive *** investigation of the viability and innovation potential of the integrated routes’technology is necessary to improve the circular bio-economy and the recovery of biofuels from biomass waste,particularly PBB.

关键词： Bio-chemical bio-fuel integration plantain and banana waste:renewable materials