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Water quality Assessment in the Bamoun Plateau, Western-Cameroon: Hydrogeochemical Modelling and Multivariate statistical Analysis Approach

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Journal of Water Resource and Protection 2021年第2期13卷 112-138页

作者： Zakari Mfonka Amidou Kpoumié Abdou nasser ngouh Oumar Farouk Mouncherou Daouda nsangou Felaniaina Rakotondrabe Alain fouépé Takounjou Mounira Zammouri Jules Rémy ndam ngoupayou Paul-Désiré ndjigui Geosciences Natural Resources and Environment Laboratory Department of Earth Sciences Faculty of Science University of Douala Douala Cameroon Geosciences and sustainable Development Laboratory Department of Earth Sciences Faculty of Science University of Maroua Maroua Cameroon national institute of Cartography Ministry of Scientific Research and Innovation Yaoundé Cameroon institute for Geological and Mining Research Ministry of Scientific Research and Innovation Yaoundé Cameroon Geosciences of superficial Formations and Applications Laboratory Department of Earth Sciences Faculty of Science University of Yaoundé I Yaounde Cameroon Center of Water Research and Technologies Geo-Resources Laboratory Faculty of Science University of Tunis El Manar Tunis Tunisia

This study focuses on the geochemical and bacteriological investigation of surface and ground water in the Bamoun plateau (Western-Cameroon). During the period from september 2013 to August 2014, 71 samples were collected from two springs, one borehole, four wells and the nchi stream for analysis of major elements. in order to obtain the characteristics of the various species of bacteria, 7 samples were selected. The analytical method adopted for this study is the conventional hydrochemical technic and multivariate statistical analysis, coupled with the hydrogeochemical modelling. The results revealed that, water from the zone under study are acidic to basic, very weakly to weakly mineralized. four types of water were identified: 1) CaMg-HCOsub>3sub>;2) CaMg-Cl-sOsub>4sub>;3) naCl-sOsub>4sub> and 4) naK-HCOsub>3sub>. The major elements were all listed in the World Health Organization guidelines for drinking water quality, except for nitrates which was found at a concentration > 50 mg /l NO-3 in the borehole F401. As for the hydrobiological aspect, the entire sample contained all the bacteriological species except for spring s301 and well P401. According to the hydrogeochemical modelling, the Gibbs model and multivariate statistical tests, the quality of surface and ground water of the foumban locality is influenced by two important factors: 1) the natural factors characterized by the water-rock interaction, evapotranspiration/crystallization, 2) the anthropogenic factors such as: uncontrolled discharges of liquid and solid effluents of all kinds and without any prior treatment within the ground and the strong urbanization accompanied by lack of sanitation and insufficient care.

关键词： foumban surface and Ground Water Water-Rock interaction Bacteriological Parameters Hierarchical Clustering Analysis Principal Component Analysis

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通过冠状动脉压力测量进行经血管造影证实的冠状动脉中度狭窄的功能评估和治疗

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世界核心医学期刊文摘（心脏病学分册） 2005年第3期1卷 21-22页

作者： Pirel M. Rioufol G. André-fouёt X. G. Finet 高登峰 serv. Hemodynamique/Cardiol. i. Hop. Cardiovasculaire Louis Pradel BP Lyon-Monchat 69394 Lyon Cedex 03 France Prof.

Accurate understanding of the physiopathology of a coronary stenosis is a major objective in management during diagnostic coronary angiography. Measurement of fractional flow reserve(FFR) by coronary pressure measurement is a reliable method for evaluating the functional consequences of a lesion of the myocardium. This retrospective monocentric study of 114 patients showed that routine coronary pressure measurement for assessing the functional consequences of intermediate(30 to 70%stenosis) lesions or those of ambiguous topography: was necessary in 4%of diagnostic coronary angiographies enabling an immediate management decision. Using this method, 34%of complementary investigations were not performed(stress test, myocardial scintigraphy, dobutamine stress echocardiography). seventeen per cent of unnecessary angioplasties were also avoided so that acute coronary event were also avoided when lesions with a FFR >0.75 were not treated by angioplasty. A 10-14%reduction in cost was achieved compared with a strategy of systematic angioplasty in respectively mono-or multi vessel disease patients and 39%compared with performing ambulatory myocardial scintigraphy in patients with multivessel disease.

关键词：中度狭窄血管造影功能评估血管成形术压力测量多血管病变多巴酚丁胺闪烁扫描局部解剖结构功能情况

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顺阿曲库铵静脉复合丙泊酚、瑞芬太尼对老年患者全髋关节置换术后认知功能和应激反应的影响

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湖南师范大学学报（医学版） 2019年第1期16卷 141-144页

作者：甘妚玉项敬国海南省三亚市人民医院三亚572000

目的 :探讨顺阿曲库铵静脉复合丙泊酚、瑞芬太尼对老年患者全髋关节置换术后认知功能和应激反应的影响。方法 :选取三亚市人民医院在2014年5月～2017年5月期间收治老年全髋关节置换术患者110例为研究对象。采用随机数字表法随机分为观察... 详细信息

目的 :探讨顺阿曲库铵静脉复合丙泊酚、瑞芬太尼对老年患者全髋关节置换术后认知功能和应激反应的影响。方法 :选取三亚市人民医院在2014年5月～2017年5月期间收治老年全髋关节置换术患者110例为研究对象。采用随机数字表法随机分为观察组(n=55)和对照组(n=55)。观察组麻醉诱导采用顺阿曲库铵+丙泊酚+瑞芬太尼+咪达唑仑,对照组麻醉诱导采用丙泊酚+瑞芬太尼+咪达唑仑。比较两组麻醉前(T0)、麻醉后5min(T1)、插管时(T2)、切皮时(T3)和拔管时(T4)血流动力学变化、术后认知功能、应激反应、麻醉情况及不良反应。结果 :在T2、T3、T4时,两组平均动脉压(MAP)水平显著降低,且观察组MAP水平显著低于对照组,在T2、T3、T4时,两组心率(HR)显著升高,但观察组HR显著低于对照组;术后1h,观察组简易智力状态检查量表(MMsE)评分为(28.08±1.43)分,显著高于对照组的(26.87±1.83)分,观察组血清皮质醇水平为(442.19±57.24)nmol/L,显著低于对照组的(535.28±73.27);观察组起效时间和作用时间分别为(1.74±0.63)min和(32.64±10.05)min,显著短于对照组;观察组总不良反应发生率为5.45%,显著低于对照组的18.18%。结论 :顺阿曲库铵静脉复合丙泊酚、瑞芬太尼用于老年全髋关节置换术麻醉,麻醉起效快、术后苏醒快,术中和术后应激反应小,利于患者术后认知功能恢复,且安全有效。

关键词：顺阿曲库铵全髋关节置换术老年认知功能应激反应

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Glaciation-induced features or sediment gravity flows——An analytic review

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Journal of Palaeogeography 2023年第4期12卷 487-545页

作者： Mats O.Molen Umea fou AB Vallmov 61S-90352 Ume aSweden

For more than 150 years, geologic characteristics claimed to be evidence for pre-Pleistocene glaciations have been debated. Advancements in recent decades, in understanding features generated by mainly glacial and mass flow processes, are here reviewed. Detailed studies of data offered in support of prePleistocene glaciations have led to revisions that involve environments of mass movements. similarities and differences between quaternary glaciogenic and mass movement features are examined, to provide a more systematic methodology for analysing the origins of more ancient deposits. Analyses and evaluation of data are from a) quaternary glaciogenic sediments, b) formations which have been assigned to pre-Pleistocene glaciations, and c) formations with comparable features associated with mass movements(and occasionally tectonics). Multiple proxies are assembled to develop correct interpretations of ancient strata. The aim is not per se to reinterpret specific formations and past climate changes, but to enable data to be evaluated using a broader and more inclusive conceptual *** occurring pre-Pleistocene features interpreted to be glaciogenic, have often been shown to have few or no quaternary glaciogenic equivalents. These same features commonly form by sediment gravity flows or other non-glacial processes, which may have led to misinterpretations of ancient deposits. These features include, for example, environmental affinity of fossils, grading, bedding, fabrics, size and appearance of erratics, polished and striated clasts and surfaces(“pavements”), dropstones, and surface *** decades of progress in research relating to glacial and sediment gravity flow processes have resulted in proposals by geologists, based on more detailed field data, more often of an origin by mass movements and tectonism than *** most coherent data of this review, i.e., appearances of features produced by glaciation, sediment gravity flows and a fe

关键词： Diamictite Tillite sediment gravity flow(sGF) striation Groove Dropstone Paleoclimate Fossil vegetation Glaciogenic proxies surface microtexture Late Paleozoic ice age

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RELATiOnsHiP AMOnG EVAPORATiOn FLUX OF GROUnDWATer, DEPTH OF WATer TABLE AnD nEGATiVE PREssURE HEAD in BARE sOiL

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Journal of Hydrodynamics 2000年第4期12卷 52-58页

作者： Qian, J.Z. Zhu, X.Y. Zhou, n.Q. Li, G.Y. Dep. of Earth sci. Nanjing Univ. Nanjing 210093 China

Evaporation of ground water is a part of moisture circulation in the field. And it is a main natural form in which water transmits from the ground water to the soil water and atmosphere water. According to the simulated experiments, we study the relationship among the evaporation, depth of groundwater table and negative pressure. By theoretical analysis of the experimental results, the main conclusions are drawn as follows. There are two abrupt points in every Q-H curve. The locations of the abrupt points are separately in step with the height of top of the capillary fringe and the height of maximal capillary rise in the soil section. When the depth of water table H is small, the evaporation flux of ground water is large. While the depth of water table exceeds the maximal capillary rise of media in vadose zone, the capillary rise breaks up and evaporation flux of groundwater is small. The water content ratio in ground surface tends to be zero and the surface of soil tends to be drought. These conclusions show that the maximal capillary rise of media in vadose zone is an important value in regulating rational depth of ground water to reduce the evaporation of ground water and to increase effective quantity of water resources. in the meantime, these conclusions are of important theoretical and practical significance to reduce the evaporation of ground water, to prevent and cure the salinization of soil, and to make full use of and protect water resources in the northern plains in China.

关键词： Capillarity Evaporation soils

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Maternal and Fetal Outcomes of COViD-19 Pregnant Women Followed Up at a Tertiary Care Unit: A Descriptive study

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Open Journal of Obstetrics and Gynecology 2020年第10期10卷 1482-1491页

作者： Madye A. ngo Dingom Eugène sobngwi Félix Essiben Antoinette n. Assiga Yves F. Wasnyo Anicet ngate Jean C. Katte Junie Y. ngaha Philemon nsem Charles E. sone Brigitte Wandji Gilles T. Libend Jean J. Bissemou Filbert E. Eko Florent Y. fouelifack Glwadys ngono Jeanne fouédjio Rebecca Tonye Pierre Ongolo-Zogo Pierre J. fouda Robinson E. Mbu Obstetrics and gynecology Unit Yaounde Central Hospital Yaounde Cameroon COViD 19 Unit Yaounde Central Hospital Yaounde Cameroon Department of Medicine and Biomedical sciences University of Yaounde I Yaounde Cameroon Department of Public Health University of Exeter Exeter UK Department of Obstetrics and Gynecology Higher Institute of Medical Technology of Nkolondom Yaoundé Cameroon

Background: The sARs-CoV-2 and associated corona virus disease COViD-19 have been declared a pandemic having a poor prognosis among individuals with debilitating conditions and those who are immune-compromised. Curren... 详细信息

strong>Background:strong> The SARS-CoV-2 and associated corona virus disease COVID-19 have been declared a pandemic having a poor prognosis among individuals with debilitating conditions and those who are immune-compromised. Current evidence is however limited on maternal and fetal transmission and pregnancy outcomes. We aimed to describe the pattern of SARS-CoV-2 infection and outcomes in a group of pregnant women followed up at a tertiary care unit in Cameroon. Methods: This was an observational study conducted over a period of 3 months (April 1span> to June 30, 2020) at the Yaounde Central Hospital. All pregnant women who were tested positive for SARS-CoV-2 and who provided a signed written informed consent were included in the study. Results: Out of 83 pregnant women who presented with symptoms suspicious of COVID-19, 25 were tested positive. The median age of these women was 31 (27 span>- 35) years. A total of 76% consulted within 6 days of onset of symptoms and 68% had a gestational age greater than 28 weeks. The most common erdana;">presenting complaint was fever (88%)

关键词： COViD-19 Pregnancy Mortality Outcomes

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20世纪40年代“中研院”史语所学人群体的国族建构尝试——以凌纯声、芮逸夫的主张为中心

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元史及民族与边疆研究集刊 2022年第1期 238-248页

作者：刘波儿南京中医药大学马克思主义学院

1939年,顾颉刚提出的“中华民族是一个”主张在政、学界引起了强烈反响,继而成为论述国家一体性的主流思路。20世纪40年代以后,在团结抗战的时代需要面前,凌纯声、芮逸夫开始转变研究取径,努力在这一主流思路下论证中华民族国家的内部... 详细信息

1939年,顾颉刚提出的“中华民族是一个”主张在政、学界引起了强烈反响,继而成为论述国家一体性的主流思路。20世纪40年代以后,在团结抗战的时代需要面前,凌纯声、芮逸夫开始转变研究取径,努力在这一主流思路下论证中华民族国家的内部结构问题。他们希望包括汉族在内的各民族群体能够在保留自身文化传统的基础上走向现代化,呈现出一种和而不同的状态,事实上提出了多元并存、共荣共生的民族理论新设想,为中国民族理论逐渐摆脱西方“民族国家”模式,走向“中华民族多元一体格局”准备了条件,他们所指出的“凝聚核心”问题在今天的民族史观建设上仍然有着重要意义。因此,尽管相关讨论并未形成完整理论、一些思考也未见全面,但这段荆榛满目的过往仍然是近代中国民族理论建设的重要一步。

关键词：凌纯声芮逸夫中华民族共同体同化汉化

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前列地尔联合高压氧治疗糖尿病周围神经病变的临床效果观察

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解放军医药杂志 2018年第6期30卷 87-90页

作者：李惊东雒否乐梁崇上杨帆陕西省核工业二一五医院内分泌科陕西咸阳712000 四川省医学科学院四川省人民医院内分泌科成都610000

目的观察分析前列地尔联合高压氧治疗糖尿病周围神经病变的临床效果。方法选取2016年8月—2017年8月接受治疗的104例糖尿病周围神经病变患者进行观察研究,根据治疗方式的不同分为研究组与对照组,每组52例。对照组在常规治疗基础上给予... 详细信息

目的观察分析前列地尔联合高压氧治疗糖尿病周围神经病变的临床效果。方法选取2016年8月—2017年8月接受治疗的104例糖尿病周围神经病变患者进行观察研究,根据治疗方式的不同分为研究组与对照组,每组52例。对照组在常规治疗基础上给予前列地尔治疗,研究组在对照组基础上联合高压氧治疗。观察比较两组的临床疗效及不良反应发生情况。结果研究组临床总有效率明显高于对照组(P0.05)。结论采用前列地尔联合高压氧治疗糖尿病神经病变的近期临床效果肯定,治疗安全性高,可有效减慢神经病变的进展,对改善患者临床症状及体征,促进神经功能恢复有重要意义。

关键词：前列地尔高压氧糖尿病神经病变治疗效果

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玻璃体腔内注射曲安奈德导致眼压早期快速升高

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世界核心医学期刊文摘（眼科学分册） 2005年第1期1卷 16-16页

作者：李晶明 singh i.P Ahmad s.i Yeh D Department of Ophthalmolog y Duke U-niversity Medical CenterDurhamN CUnited States.Dr.

Purpose To report the occurrences of early rapid increases in intraocular(iOP)after intravitreal glucocorticoid *** Observational case *** We ret-rospectively reviewed the records o f three patients seen and treated at Duke Eye *** i n all three cases,a significant rise in iOP occurred within 1week of intravitreal triamcinolone injection for refrac tory macular *** one patient,a white material was fou nd in the angle on *** three cases require d surgical intervention to reduce the *** Considering the early rapid rise in iOP in these three cases,we suggest that clinicians closely monitor patient s after intravitreal tri-amcinolone injections for the development of acute ***,it may be advisa ble to perform go-nioscopic examinations to look for a ny abnormal accumu-lation of material in the angle.

关键词：腔内注射房角镜检查前房角黄斑水肿急性青光眼眼科中心物质沉积临床医生糖皮质激素病例研究

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傅里叶变换红外遥测光谱仪在泡沫云红外消光性能测试中的应用

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现代仪器 2012年第5期18卷 49-51页

作者：杜雪峰潘功配曲家惠赵新颖任志锋文坤南京理工大学化工学院308教研室南京210094 沈阳理工大学装备工程学院沈阳110159 中国航天科技集团公司川南机械厂泸州646003

采用Bruker OPAG33傅里叶变换红外遥测光谱仪,对3-5μm和8-14μm波段泡沫的消光性能进行测试研究。通过计算得出其透过率,结果表明Bruker OPAG33傅里叶变换红外遥测光谱仪能够较好的对泡沫云的中远红外消光性能进行评价。

关键词：傅里叶变换红外遥测光谱仪泡沫云中远红外消光

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