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作者： GOMBE Charlemagne guy(龙尚) 哈尔滨工业大学

学位级别：硕士

本论文旨在通过研究信贷管理来阐述利润率问题。因此,在反复思考利润率影响的基础上,我们提出如下问题:银行信贷管理会产生怎样的影响?根据这个问题,我们对经济银行和中部非洲国家银行(BEAC)进行了调查。通过对数据进行收集与分析,表明... 详细信息

本论文旨在通过研究信贷管理来阐述利润率问题。因此,在反复思考利润率影响的基础上,我们提出如下问题:银行信贷管理会产生怎样的影响?根据这个问题,我们对经济银行和中部非洲国家银行(BEAC)进行了调查。通过对数据进行收集与分析,表明数据结果对该银行的利润率的影响成正比。在本课题中,首先对银行家的使用信息策略进行了文献综述,这也是信用风险管理设想的良好选择之一。不同的作者对决定银行业绩的因素采用了不同的方法并分别做了详尽的阐述:第一个是市场结构和银行业绩的关系,市场结构对银行业绩产生直接影响。第二个是基于策略管理的理论,这种做法是领导者对目标抉择所决定的。本课题首先介绍了中非银行的信贷管理体制,然后对利润率进行分析,从而评价该银行是否盈利。在课题的研究中,我们也制定了股权信用管理在银行环境中的重要目标,从而在分析不同收入情况下,减轻委托风险。具体包括:-了解中非共和国经济银行的财务管理;-权衡银行的金融经济利润率;-中非部经济银行融资和经济利润率;-在投资组合中衡量信贷;-基于信用模型的信贷组合管理;用于实现本研究的方法有三种,第一种是信息收集和处理,第二种是现场研究,第三种是估计和统计的方法。用于实现这一研究的方法细分如下:-文献研究:包括在经济银行网站、与论文相关的书籍和出版物以及其他论文获取的数据文件。-关于经济银行的业绩数据的统计分析数据来自中部非洲国家银行(BEAC)。-面试系统或CAR经济银行的主管部门收集的备注信息。从1980年开始,许多文章都对银行的发展就有了定义,其中最重要的术语是“现代化”。要了解银行业发展的问题,必须从头到尾追溯,最后弄清楚真正的银行业。尤其是现在影响银行发展的因素不仅包括科技因素,还有经济因素。银行是收集公众存款(特别是活期存款)并发放贷款给企业和家庭的金融机构。贷款是这样一笔钱:金融机构(银行或金融公司)按一定利率对其客户收取利息。数量被预先确定,并且与利息一起分期偿还。以下是信贷的不同类型:短期信贷,中期和长期贷款,信用保释(租赁)和跟单信用证(信用证)。在20世纪80年代,私人银行业在西非并不普遍存在。为了弥补这一不足,西非商业联合会商会发起成立非洲私人银行基金经理与私人资本的项目。在1984年8月,该公司创造了促进经济银行管理的初始资本。一年以后的10月30日,随着上市成功,首个跨国经济银行公司(ETI)持有多哥的非洲银行,拥有资本100万美元。ETI为撒哈拉的南非创造了主要的独立私人银行集团。ETI已经遍及19个非洲国家,其经济银行的目标是:-经济银行项目是一个负责任的企业公民;-将充分利用社区和社会的不利层,共创美好未来;-鼓励非洲国家人民的创造力和精益求精的精神;-巩固非洲一体化。中非共和国经济银行(ECA)是在2007年创建的。中非国际银行(BICA)的发表了其被ETI银行收购的声明。经济银行是主体是原BICA,并随时会被批准调整。中非共和国经济银行公司是属于中非共和国班吉。自2011年起,中非共和国经济银行拥有271名员工和12个网络机构。高管团队组成的五个委员会有十一名成员。所有银行业都难以避免风险。信用风险损失是由客户无力履行其义务造成的。中非共和国经济银行是因为银行业正在通过其贷款发放活动,进展及其对金融市场活动面临的信用风险。信贷业务的决定因素建立在债务人的信用基础上,这将使银行可以跟踪补偿过程直到付清贷款,以避免最大信用损失的风险。风险的主要类型包括:-市场风险、战略风险、操作风险、监管风险、技术和信息风险、工作人员风险。中非共和国经济银行在信用风险管理方面的政策是为了防止最坏情况的发生,这项政策是在预防的基础上,综合人力物力财力和信息安全技术以避免或降低银行风险的政策实现。在衡量信用风险的问题上,中非共和国集团采用多种风险管理方法。因此,我们选择了压力测试和统计得分两种方法。这两个工具能够估计银行在默认的情况下可能出现的经济预期损失水平。一个成功的企业必须有效而且高效。有效需要通过合理分配投入资源的手段来实现。本研究的目的是分析从集团收集的数据,得出评估结果,进行深入分析以查看该行是否盈利。该行在收集存款方面以51%的市场份额保持领先地位并且不断提升。然而,该集团可继续提升业绩,并达到60%。2009-2012年起,经济银行中非共和国分散式信贷有了增加的趋势,一共增加了22.94%。在一般情况下,这种增加并不导致未偿还债务的增加。与2009年相比,2014年增加了21.02%。网上银行的收入是指银行活动创造的增加值。更确切地说,它是银行业务活动和相同活动开销之间的差异。2008-2014年网上银行收入的演变情况。在过去8年里,网上银行的收入增加显著,2008年增加560亿非洲法郎,2014年增加950亿非洲法郎,同比增长69.65%。这也标志着经济增长速度放缓和政

关键词：信用风险银行利润影响因素中非共和国经济银行

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Phytochemical analyses, antimicrobial and antioxidant activities of stem bark extracts of distemonanthus benthamianus H. Baill. and fruit extracts of Solanum torvum Sw. from Gabon

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Asian Pacific Journal of Tropical Biomedicine 2019年第5期9卷 209-216页

作者： Cédric Sima Obiang Rick Léonid Ngoua Meye Misso guy Roger Ndong Atome Joseph Privat Ondo Louis Clément Obame Engonga Edouard Nsi Emvo Laboratory of Research in Biochemistry University of Sciences and Technology of Masuku Laboratory of Natural Substances and Organometallic Synthesis University of Sciences and Technology of Masuku

Objective: To evaluate the phytochemical constituents, antimicrobial and antioxidant activities of the extracts of distemonanthus benthamianus(d. benthamianus) stem bark and Solanum torvum(S. torvum) fruit which have been used as traditional medicinal herbs in Gabon. Methods: Plant extracts were subjected to a qualitative study(phytochemical screening) and a quantitative(dosing) study of secondary metabolites. Antioxidant activity was tested by 1,1-diphenyl-2-picrylhydrazyl and 2,2'-azino-bis 3-ethylbenzothiazoline-6-sulfonic acid assay. Bacteria and fungi susceptibility tests were performed on Mueller Hinton medium and solid Sabouraud, respectively, using the diffusion method, while minimum inhibitory concentration, minimum fungicidal concentration and minimum bactericidal concentration were evaluated by microdilution ***: The total phenol and tannin contents were significantly higher in the water-ethanol extract compared to the other extracts of d. benthamianus and S. torvum. The water-ethanol and water-acetone extracts showed significantly higher antioxidant activity than the aqueous extracts of the two medicinal plants. However, the extracts presented weak antioxidant activities compared to standards(Vitamin C, BHA). The water-acetone and water-ethanol extracts of S. torvum showed the highest antimicrobial activity against Bacillus cereus LMG 13569 BHI, Shigella dysenteriae 5451 CIP, Shigella dysenteriae and Neisseria gonorrhoeae. Conclusions: Our results show that d. benthamianus and S. torvum can be promising sources of natural products with potential antimicrobial and antioxidant activities.

关键词： Antioxidants Phytochemical Antimicrobial distemonanthus benthamianus Solanum torvum

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不同种源北美香脂杨苗木碳水化合物积累差异分析

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西南林业大学学报（自然科学） 2014年第1期34卷 27-30页

作者：白婷喻方圆 Robert d.guy 南京林业大学森林资源与环境学院江苏南京210037 加拿大不列颠哥伦比亚大学

对9个不同种源的北美香脂杨在加拿大温哥华扦插繁殖的苗木枝条进行分析,分别测定带芽枝条可溶性糖、淀粉、糖组分的含量,扦插后萌发的叶干质量和根干质量。结果表明:不同种源枝条的可溶性糖和淀粉含量差异极显著;扦插生根和叶的干质量... 详细信息

对9个不同种源的北美香脂杨在加拿大温哥华扦插繁殖的苗木枝条进行分析,分别测定带芽枝条可溶性糖、淀粉、糖组分的含量,扦插后萌发的叶干质量和根干质量。结果表明:不同种源枝条的可溶性糖和淀粉含量差异极显著;扦插生根和叶的干质量与淀粉含量间呈现正相关关系,与各地的地理位置(纬度、经度、海拔)无显著相关性;不同种源枝条内淀粉含量与其扦插生根特性呈正相关关系。

关键词：北美香脂杨种源碳水化合物含量

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Molecular and electronic structure of several 2,3-dithienylquinoxalines and their 2:1 complexes with silver(I) nitrate

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Open Journal of Inorganic Chemistry 2014年第1期4卷 10-17页

作者： guy Crundwell Stefanie Cantalupo Paul d. C. Foss Brian McBurney Kristen Kopp Barry L. Westcott James Updegraff III Matthias Zeller Allen d. Hunter department of Chemistry & Biochemistry Central Connecticut State University New Britain USA YSU Structure Center Department of Chemistry Youngstown State University Youngstown USA

We have synthesized three bis (thienyl) quinoxalinesilver(I) complexes;however, unlike analogous silver(I) complexes of pyridylquinoxaline that utilize (N, N) bidentate behavior from the quinoxaline and pyridyl ring nitrogens, the bis(thienyl) quinoxaline ligands did not utilize the bonding potential of the thienyl rings to give (N, S) bonding modes. PES spectra modeling of these ligands indicates that the preferential metal bonding via only the quinoxaline nitrogen atoms is due to the N-rich, but S-poor, characters of the frontier orbitals.

关键词： X-Ray diffraction Silver(I) Complexes Thiophene Quinoxalines Photoelectron Spectroscopy

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Study of dissipating of Wave Energy in the Breakers Zone of the Gulf of Guinea: Case of Autonomous Port of Cotonou in Benin Coastal Zone

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Journal of Modern Physics 2022年第9期13卷 1272-1286页

作者： Oswald G. Acclassato Noukpo Bernard Tokpohozin Christian d. Akowanou Adjimon Mathias Houékpohéha guy Hervé Houngue Bruno Basile Kounouhéwa Laboratoire de Physique du Rayonnement FAST-UAC Cotonou République du Bénin département de Physique (FAST) et Formation doctorale Sciences des Matériaux (FdSM/UAC) Calavi République du Bé-nin Institut National Supérieur des Classes Préparatoires aux Etudes d’Ingénieur (INSPEI/UNSTIM) Abomey République du Bénin Institut de Mathématiques et de Sciences Physiques (IMSP/UAC) Porto-Novo République du Bénin

Rapid population growth and major trends of world economy growth have led to significant energy needs in our country. Benin, Gulf of Guinea country, although with a significant coastal network powered by potential energy from breaking waves, has experienced a deficit and a critical energy instability, marked by recurrent power cuts and disruption of the national economy. To ensure the integration of this source of renewable energy in the Benin energy mix and sustainably reduce the energy deficit in progress, this work has aimed to study the dissipation of wave energy at the bathymetric breaking in the breakers zone of Cotonou coast. Sea conditions and the statistics parameters of the breaking waves under perturbation effect of the seabed were evaluated to predict the beginning of the breaking. The modeling is based on the Navier-Stokes equation in which the viscosity and the interactions between the molecules of the oceanic fluid are neglected. The nonlinear wave dispersion relation is also used. The results obtained for this purpose showed that water particles have an almost parabolic motion during their fall;their velocity is higher than those of the early breaking. In this area, the waves dissipate about 80% of their energy: it generates turbulence which leads to a strong setting in motion of sediments.

关键词： Wave Breaker Zone Wave Power Energy dissipation Seabed

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Heavy Forging Inspection Using Advanced PA UT

Heavy Forging Inspection Using Advanced PA UT

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2017远东无损检测新技术论坛

作者： guy MAES dany dEVOS daniel RICHARd Zetec

Generation III+nuclear power plants,especially those with capacity over 1100 MWe,implement considerably larger forged components than previous plant *** manufacturing process requires new non-destructive inspection techniques to ensure the quality of these critical ***,due to the long sound paths,conventional ultrasonic（UT）techniques cannot provide adequate detectability of the reference reflectors required by the existing ***,some standards require multiple angle beams to be applied in addition to the straight beam inspection,and this leads to long inspection *** innovative concept of a semi-flexible 2d array probe has been introduced to overcome the limitations of conventional UT *** performance of this new probe type has been extensively validated on representative test ***,dedicated software tools have been developed to facilitate the generation and use of dGS sizing diagrams for a wide range of conventional and phased array probes,including semi-flexible 2d array *** tools help heavy forging manufacturers to demonstrate compliance with existing codes based on the Equivalent Reflector Size（ERS）evaluation *** paper addresses the implementation and validation of this new inspection solution for large rotor *** simulations,as well as detectability measurements and data acquisitions on representative test specimens will be presented,and compared with conventional UT *** aspects of the hardware and software specification will be addressed,as well as the potential reduction of the total inspection time.

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LASIK治疗屈光参差

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中国实用眼科杂志 2001年第4期19卷 264-266页

作者：李海丽 guy Chan 吴静安北京大学第一医院眼科 100034 香港养和医院屈光手术中心

目的 :总结激光原位角膜磨镶术 (L aser in situ Keratomileusis,L ASIK)治疗屈光参差后病人的屈光和视力结果 ,评价此疗法的效果、安全性和可预测性。方法 :2 5例屈光参差病人的 40只眼接受了 L ASIK治疗。术前 ,40只术眼的平均球镜和... 详细信息

目的 :总结激光原位角膜磨镶术 (L aser in situ Keratomileusis,L ASIK)治疗屈光参差后病人的屈光和视力结果 ,评价此疗法的效果、安全性和可预测性。方法 :2 5例屈光参差病人的 40只眼接受了 L ASIK治疗。术前 ,40只术眼的平均球镜和柱镜分别为 - 11.7± 4.78d(- 3.75～ - 2 2 .0 d)和 1.98± 1.48d(0 .0～ 6 .0 d) ,最佳矫正视力为眼前数指到 1.0 (平均 0 .6 ) ,2 5例病人的双眼平均球镜和柱镜之差分别为 7.47± 3.76 d(2 .5～ 16 .5 d)和 1.2 1± 1.44 d(0 .0～ 5 .75 d)。术后随访时间是 1天 ,1周 ,1、 3、6月 ,1、 2、 3年。结果 :术后 ,所有病人的屈光参差都有显著好转 ,双眼的平均球镜和柱镜之差分别下降到 1.49± 1.36 d (0 .0～ 5 .75 d)和 0 .5± 0 .71d(0 .0～ 2 .2 5 d)。术眼的平均球镜和柱镜分别下降到 - 1.2 4± 2 .0 2 d(1.5～ - 11.0 d)和 0 .5 8± 0 .6 2 d(0～ 2 .2 5 d) ,平均最佳矫正视力上升到 0 .9,31只眼 (77.5 % )的最佳矫正视力增加了 1至 7行。 2 2只弱视眼中 ,14眼 (6 3.6 % )的最佳矫正视力可达到 0 .8或 1.0。未发生明显的术中和术后并发症。结论 :L ASIK是一种安全、有效。

关键词：激光原位角膜磨镶术屈光参差弱视 LASIK

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On the Simulation of the Influence of defects on Immersed Plane Periodic Multilayer Viscoelastic Media

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Open Journal of Acoustics 2021年第2期11卷 17-30页

作者： Massaï Hatoumva Emmanuel Siryabe Pierre Marechal guy Edgar Ntamack Gambo Betchewe Faculté des Sciences Département de Physique Université de Maroua Maroua Cameroon Safran Helicopter Engines Groupe Evaluation Non Destructive Bordes France Laboratoire Ondes et Milieux Complexes (LOMC) UMR 6294 CNRS Université du Havre Le Havre France Groupe de Mécanique Matériaux et Acoustique P.B: 454 Département de Physique Faculté des Sciences Université de Ngaoundéré Ngaoundéré Cameroon

This work deals with the study of a plane periodic multilayer structure in which the elementary stack consists of two plates in contact: one in aluminum (AL) and the other one in polyethylene (PE). These isotropic materials, present a high acoustic impedance contrast. The attenuation of the longitudinal and transverse waves is taken into account in the polyethylene but neglected in the aluminum plate. The effect of different defects is analyzed. Firstly, we focus on the effect of the presence of grease inclusion in the polyethylene plate (considering the two plates of the elementary stack in perfect contact). Secondly, the effect of disbond simulated by the insertion of a thin Teflon layer between the interfaces of the two layers constituting the elementary stack of the multilayer structure is investigated. Finally, the effect of the stacking sequences of the multilayer is analyzed. In order to obtain the effective acoustic parameters of polyethylene layer, allowing to evaluate the reflection and transmission coefficients using the stiffness matrix method developed by Rokhlin et al., four homogenization models are analyzed, then the best one to our configuration is chosen. The comparison of the simulation results is carried out.

关键词： Reflection Coefficients Transmission Coefficients defects Multilayer Peri-odic Structure

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Geochemistry and zircon U–Pb ages of the Paleoproterozoic ultramafic rocks of the Mbi Valley, Boali area, Central African Republic

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Acta Geochimica 2022年第3期41卷 515-535页

作者： Evine Laure Njiosseu Tanko Prince Emilien danguene Philomene Nga Essomba Tsoungui Sylvestre Ganno Jonas didero Takodjou Wambo Bertin guy Takam Tchoupe Gus djibril Kouankap Nono Timoleon Ngnotue Boniface Kankeu Jean Biandja Jean Paul 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 Institute for Geological and Mining Researches(IGMR) P.O.Box 4110YaoundéCameroon

This paper investigates the geochemistry of bulk rock and infers the petrogenesis of ultramafic rocks in the Boali Precambrian terrane in Mbi Valley,in the North of the Central African Republic(CAR).The studied 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 number(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 studied samples correspond to arc-related ultramafic ***-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 multi-element diagrams exhibit LREE enrichment and large ion lithophile elements(LILE)relative to high field strength elements(HFSE),and notable negative anomalies in *** suggests the generation of the parent melt by slab dehydration and wedge melting *** addition,incompatible trace element composition and ratios assumed that the source magma had an enhanced mantle source associated with a prominent influence of continental *** of mantle wedge by plate-dehydrated,LILE-rich fluids and the incorporation of sediments derived from subduction explain the enhancement of the *** major and trace element compositions jointly with the tectonic reconstruction 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 subduction of an oceanic plate beneath the continental lithosphere,dehydration of the slab and mantle wedge *** result intimate that the remnants of Paleoproterozoic oceanic crust or subduction event and subsequent basins closure extended from

关键词： Atlantic supercontinent Central African Republic Ultramafic cumulate LILE-enriched fluids Arc setting

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Customized and in situ fenestrated stent-grafts:A reinforced poly-ε-caprolactone branch cuff designed to prevent type III endoleaks and enhance hemodynamics

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Medicine in Novel Technology and devices 2021年第1期9卷 26-36页

作者： Fujun Wang Chaojing Li Robert Guidoin Abedalwafa Mohammed Graeham douglas Fan Zhao guy dionne Ze Zhang Haripriya Ramesh Lu Wang Mark Nutley Key Laboratory of Textile Science and Technology of Ministry of Education College of TextilesDonghua UniversityShanghai201620China Axe Medecine Regeneratrice Centre de Recherche du CHUand Departments of Surgery and RadiologyUniversite LavalQuebecQCCanada department of Engineering University of CambridgeCambridgeUK Joint department of Biomedical Engineering UNC/NCSURaleighNCUSA division of Vascular Surgery and department of diagnostic Imaging University of CalgaryPeter Lougheed CentreCalgaryABCanada

Superior long-term anchorage of the bridging stent-grafts from the fenestrated main body endograft could be achieved with the addition of a flared cuff,capable of preventing the previously observed fabric fraying around the fenestration as a result of the balloon angioplasty of the seal *** novel stent cuff design will also facilitate more complete biointegration of the devices,eliminate the hemodynamic variation as well as significantly reduce the possibility of a Type III *** feasibility of this concept is demonstrated by observations made from in-situ tests performed in a Beta endograft *** cuffs made of poly(ε-caprolactone)supported with a weft-knitted polyester structure can be manufactured with various configurations to optimize the transition from the main body of the endograft,thus preventing the currently marketed designs’hemodynamic perturbation while also promoting endograft *** concept represents an evolution in branch graft design,which may enhance the long-term durability of customized fenestrations and open new applications for in-vivo graft fenestration in the near *** ongoing investigation to optimize its structure,X-ray opacity,fixation to the flared stent,and material biocompatibility are still required to build upon this concept’s proof.

关键词： Flared cuff Fenestration Stent-grafts Poly(ε-caprolactone) Polyester fabrics

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