检索结果-南通市图书馆

Combined Geoelectrical Approach DC and IP Methods in the Identification of the Mineralized Bodies Parallel to the NE-SW Tectonic Line of Kadei River: Case of Quartz or Pegmatite Gold Bearing Veins of Ngoura Subdivision (East Cameroon)

引用

International Journal of Geosciences 2016年第7期7卷 891-903页

作者： Daniel Hervé Gouet Stéphane Patrick Assembe Arsène Meying marcelin Bikoro Bialou Josué Kalaza Haskandi Théophile Ndougsa-Mbarga Department of Petroleum and Gas Explorations Institute of Mines and Petroleum Industries University of Maroua Maroua Cameroun Department of Physics Faculty of Science University of Bamenda Bambili Cameroon Department of Applied Geophysics Geology and Mining Exploitation College University of Ngaoundéré Ngaoundéré Cameroon Department of Earth Sciences Faculty of Science University of Maroua Maroua Cameroun Department of Earth Sciences Faculty of Science University of Ngaoundere Ngaoundere Cameroon Department of Physics Advanced Teacher’s Training College University of Yaounde I Yaounde Cameroon

A geophysical investigation of subsurface structures using the Syscal Junior 48 resistivity-meter was conducted in Ngoura subdivision (East Cameroon) following a combined geoelectrical direct current (DC) approach involving Resistivity and IP methods. This investigation was allowed to collect data on forty-five (45) profiling lines at three acquisition levels (AB = 100 m, MN = 10 m;AB = 200 m, MN = 20 m and AB = 500 m, MN = 50 m) and two electric panels L1 and L4, using the Schlumberger array. Processing, modeling and interpretation of data collected using the Winsev, Res2Dinv and Surfer software helped in highlighting a conductive and strongly mineralized discontinuity in granite formations, which lined up with the NE-SW Kadei tectonic line. It extends beyond 100 m depth over an average width of 600 m. The mineralization associated with this discontinuity is identified by a high concentration of disseminated metalliferous minerals in quartz or pegmatite veins. The mining reconnaissance works in the study area and those of several authors have characterized this anomaly to a lode gold quartz or large pegmatite. The results of this study correlate with geological and tectonic data for the region marked by NE-SW Kadei tectonic line. Therefore, they confirm the reliability of a geoelectrical DC investigation method combining Resistivity and IP to the identification of ore bodies.

关键词： Geoelectrical Investigation Direct Current IP Method Resistivity NE-SW Tectonic Line Mineralized Body Conductive Area

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Crustal Structure and Tectonic Setting over the Panafrican Domain in Loum-Minta Area (Centre-East Cameroon) from Aeromagnetic Analysis

引用

Journal of Geoscience and Environment Protection 2019年第4期7卷 61-81页

作者： Jean Aimé Mono marcelin Bikoro Bi-Alou Arsene Meying Theophile Ndougsa-Mbarga Stéphane Patrick Assembe Crépin Timoléon Kofané Postgraduate School of Sciences Technologies & Geosciences University of Yaoundé I Yaoundé Cameroon Basical Sciences Teaching Department of Advanced Technical Teacher Training School University of Douala Douala Cameroon Department of Earth Sciences Faculty of Science University of Maroua Maroua Cameroon School of Geology and Mining Engineering University of Ngaoundere Ngaoundere Cameroon Department of Physics Advanced Teacher’s Training College University of Yaoundé I Yaoundé Cameroon Faculty of Science University of Bamenda Bambili Cameroon

The present work aims to determine the geological structure, to highlight and to determine the characteristics of the fault system responsible for the current structure of the study area through the interpretation of available aeromagnetic data. Total magnetic intensity anomaly (TMI) was critically interpreted using several analysis techniques including Reduction to Equator (RTE), First Vertical Derivative, upward continuation, spectral analysis and 2D3/4 modelling. All results obtained from the interpretation process were combined together to draw an interpretative geological map of the area and allow the general view of the surface and sub-surface structures. The interpretative geological map reveals that the geological formations of the studied area appear to be intensely fractured by an E-W, ENE-WSW and NE-SW main orientation fault system. The lineaments identified in the area study could be linked to the Pan-African orogeny and seem to correspond to deep-seated basement structures, which are referred to the tectonic boundary between Congo Craton and the Pan-African orogeny belt. According to spectral analysis results, the depths of the sources of superficial and deep magnetic anomalies are 2500 m and 12,000 m respectively. The 2D3/4 modelling of one magnetic profile plotted on the reduced residual map at the equator was performed to approximate the geometry and depth of the sources of magnetic anomalies, the model suggests the intrusion of a large body of high susceptibility during the continental collision. The results of this study can be used to better understand deep-seated basement structures and to support decisions with regard to the development of industrial areas, as well as of hydrogeological and/or mining investigations to be undertaken in the study area.

关键词： Aeromagnetic Upward Continuation Spectral Analysis Modelling 2D3/4

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

绿地展馆黑色玻璃金字塔

引用

城市环境设计 2013年第12期 206-209页

作者： Studio odile Decq 欧蒂娜·戴克工作室

信息中心大楼位于入口大道的尽头,占据了独特的场地位置。建筑植入先前的两个主要展厅中,必须有所不同以标示出游客通道和家具展览公园之所在。建筑形状独一无二,看似一朵绽放的鲜花迎接四方游客。红色外观使建筑明亮夺目,成为游客的视... 详细信息

信息中心大楼位于入口大道的尽头,占据了独特的场地位置。建筑植入先前的两个主要展厅中,必须有所不同以标示出游客通道和家具展览公园之所在。建筑形状独一无二,看似一朵绽放的鲜花迎接四方游客。红色外观使建筑明亮夺目,成为游客的视线中心。绚烂开放的大花瓣使游客从户外即可清晰地观赏到建筑中心黑色的玻璃金字塔。在日光的照耀下,建筑光芒四射;在夜色笼罩下,建筑成为一个透明的结构,在室内灯光的映衬下闪闪发光。

关键词：玻璃金字塔展馆游客场地位置

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Epidemiologic, Clinical and Radiological Aspects of Male Urethral Strictures at the NgaoundéréRegional Hospital

引用

Open Journal of Radiology 2019年第2期9卷 115-124页

作者： Mathurin Neossi Guena Florent Zilbinkai Alapha Eric Lonang Wandji odile Fernande Zeh Joseph Gonsu Fotsing Department of Biomedical Sciences Faculty of Sciences University of Ngaoundéré Ngaoundéré Cameroon Imaging Service Ngaoundéré Regional Hospital Ngaoundéré Cameroon Faculty of Medicine and Biomedical Sciences University of Yaounde I Yaounde Cameroon Yaounde Gynaecology Obstetrics and Pediatrics Hospital Yaounde Cameroon

Background: Urethral stricture is a disabling condition that remains prevalent due to the upsurge of sexually transmitted infections and traumatic lesions of the urethra during trauma of the pelvis in humans. Objective: Describe the epidemiological, clinical and radiological presentations of male urethral strictures. Method: It was a cross-sectional and descriptive study during a one-year period from January to December 2017 including all male patients presenting for a urethrocystography examination, at the Ngaoundere Radiology and Medical Imaging Center who agreed to participate. The urethrocystography technique depended on patient’s condition and was either retrograde, anterograde, or following intravenous urography. The examinations were performed with GE X-ray equipment using Kodak Dry View CRs. The interpretation was performed by a radiologist with at least five years of experience. The variables studied were age, clinic, history, uretrocystography technique and results. The data were collected using a previously established data sheet and processed with Sphinx Plus2 V5 and Microsoft Excel 2010 software. Results: 39 patients were enrolled in this study;the average age of our patients was 43.8 years with extremes of 4 and 76 years. The 50 - 60 age group (30.7%) was the most affected. Infection (53.9%) and trauma (23.1%) were the most common etiologies;dysuria (38.5%) and diminution of urinary flow (30.8%) were the most patient’s complaint. Retrograde urethrocystography (66.7%) was the most performed technic. Minimal bleeding in 46.2% of patients was the most common incident during urethrocystography;76.9% of patients had a difficult urination and 7.7% an impassable urethral meatus. After interpretation, 84.6% of patients had urethral stenosis, which was associated with bladder diverticula (23%) and fistulas (15.3%). The stenosis was seated on membranous urethra (81.8%), tight type (45.4%), short (66.7%) and single (81.8%). The post-void residue was significant i

关键词： Stenosis Urethrocystography Male Urethra

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

南京直立猿人化石大遗址博物馆探索的“步道”

引用

城市环境设计 2013年第12期 210-213页

作者： Studio odile Decq 欧蒂娜·戴克工作室

南京直立猿人化石大遗址博物馆属于重要的考古遗址开发项目,1993年因为出土南京直立人的头骨化石而使该地区名声大噪。博物馆的形状源于蜿蜒曲折的场地地形,并通过建筑体量进行了重新解读。场地和博物馆完美融合,互不干扰。弯曲的线条... 详细信息

南京直立猿人化石大遗址博物馆属于重要的考古遗址开发项目,1993年因为出土南京直立人的头骨化石而使该地区名声大噪。博物馆的形状源于蜿蜒曲折的场地地形,并通过建筑体量进行了重新解读。场地和博物馆完美融合,互不干扰。弯曲的线条及场地与博物馆之间的互动创造了连续的"步行道"。通过不同层面之间的玻璃立面可以

关键词：遗址博物馆直立猿人爪哇直立人化石南京江苏

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

语言学习中的特殊问题视觉行为与教员

引用

科学与社会 1981年第2期 89-102页

作者： odile Menot 秦吉法国巴黎第三大学语言及语音研究所

一位语音学家和现代语言学教授解释了在语言教育领域中视觉与身体运动的作用,该领域在传统上是由两种别的官能(听与讲)的力学和心理学支配的。

关键词：非言语行为语音学说话者译释法国法兰西共和国讲话者

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

3DX1 多切片视图

引用

城市环境设计 2013年第12期 214-215页

作者： Studio odile Decq 欧蒂娜·戴克工作室

项目说明费拉来得的一生都因其对平面和原型透视图的独到运用而享有盛誉。3DX1也采用了同样的技术手段。通过使用3mm厚的陶瓷面板,该装置使游客对于物质实体的空间状态有了不一样的理解。31条长15cm的矿物薄片纵向叠放,最终形成一个高4... 详细信息

项目说明费拉来得的一生都因其对平面和原型透视图的独到运用而享有盛誉。3DX1也采用了同样的技术手段。通过使用3mm厚的陶瓷面板,该装置使游客对于物质实体的空间状态有了不一样的理解。31条长15cm的矿物薄片纵向叠放,最终形成一个高4.5m的立方体。一个无形的圆锥体沿对角线穿过物体内部,建立了虚实之间的对话。新的倾

关键词： DX 薄片物质实体立方体正方体 view 技术手段观者透视图空间状态费拉游客

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Utility, Appropriateness of Request and Report of Computed Tomography Scan for the Diagnosis of Paranasal Sinuses Pathologies in a Sub-Saharan Africa Urban Setting

引用

Open Journal of Radiology 2021年第4期11卷 175-186页

作者： Yann Chris Mannel Eng Armel Philippe Awana Ambroise Merci Seme Engoumou François Djomou odile Fernande Zeh Faculty of Medicine and Biomedical Sciences The University of Yaounde I Yaounde Cameroon Jamot Hospital Yaounde Cameroon Ear Nose and Throat Unit Yaoundé University Teaching Hospital Yaounde Cameroun Yaoundé Gyneco-Obstetrical and Pediatric Hospital Yaounde Cameroon

Background: Computed tomography (CT) Scan is the imaging of choice for the diagnosis of sino nasal (SN) pathologies in sub-Saharan African setting. However, it is often requested by non experienced practitioners. We aimed to describe the utility and the appropriateness of CT Scan request forms and results in the diagnosis of SN pathologies. Method: We conducted a retrospective cross-sectional study in four health facilities in Yaoundé, Cameroun, from October 2018 to September 2019. All patients to whom SN CT Scan was performed were called for an appointment. After informed consent, data on the appropriateness and conformity of the request form were collected and compared to the guidelines of the French society of radiology. CT Scan results were also collected and the quality of the report was evaluated. Results: A total of 206 SN CT Scan request forms and reports were included, with a mean patient age of 37.7 ± 16.1 years. The request form was conformed to guidelines in 8.3% of cases and was found appropriate in 62.6% of cases. No CT Scan report had all the items required, and 159 (77.2%) reports were useful. The most common diagnosis in patients with abnormal results was chronic sinusitis (49.5%) and SN polyp or polyposis (19.4%). Conclusion: Most of SN CT Scan requested were appropriate and useful. However, the conformity of request forms and reports to the guidelines is low. Suggesting the need for capacity building for the diagnosis of SN pathologies especially for non specialists like general practitioners and nurses.

关键词： Appropriateness Conformity CT Scan Request Form Report Sino Nasal Pathologies

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

硝酸盐有益健康

引用

新发现 2013年第2期 96-101页

作者： odile Capronnier 陆焕(编译)

政府部门严格规定了硝酸盐在饮用水中的含量，民众也担心硝酸盐导致健康问题。硝酸盐类之所以如此不受欢迎，是因为它们背负着多种恶名。但是，最近的研究表明，硝酸盐其实对健康有益，那么。是不是我们可以放心地摄入硝酸盐了呢？是不... 详细信息

政府部门严格规定了硝酸盐在饮用水中的含量，民众也担心硝酸盐导致健康问题。硝酸盐类之所以如此不受欢迎，是因为它们背负着多种恶名。但是，最近的研究表明，硝酸盐其实对健康有益，那么。是不是我们可以放心地摄入硝酸盐了呢？是不是我们原先对硝酸盐抱有误解呢？记者就此展开了调查。

关键词：健康问题硝酸盐政府部门饮用水记者

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Routine prenatal ultrasonography: The pregnant woman’s expectations and perspectives on safety in a Central African obstetric population

引用

Open Journal of Obstetrics and Gynecology 2013年第7期3卷 573-576页

作者： Joshua Tambe Boniface Moifo odile Fernande Zeh Pascal Foumane Joseph Gonsu Fotsin Robinson Enow Mbu Obstetrics and Gynecology Department Faculty of Medicine and Biomedical Sciences The University of Yaounde 1 Yaounde Cameroon Obstetrics and Gynecology Department Gyneco-Obstetric and Pediatric Hospital Yaounde Cameroon Radiology Department Gyneco-Obstetric and Pediatric Hospital Yaounde Cameroon

Background: Pregnant women are important stakeholders regarding prenatal ultrasound (US) scanning. Their specific needs and preferences have to be ascertained by healthcare providers to ameliorate service delivery. Objective: To assess the pregnant woman’s expectations during routine prenatal US scan and her perspective ofUSsafety during pregnancy in a Central African obstetric population. Methods: A cross-sectional descriptive survey of consenting pregnant women who reported for routine prenatal US scan using an anonymous questionnaire. A convenient sample of 200 participants was adopted. Results: Thirty-three (16.8%) respondents (on a total of 196) declared they had never done anUSscan. One hundred and eleven (58.4%) on a total of 190 stated that they had not received any information on what ultrasonography is all about. Before theUSscan the respondents would like to receive information on the aim or purpose of ultrasonography, possible inconveniences or risks, and on how to prepare before the scan. The most reported expectations were assurance of the wellbeing of the fetus (58%), gender determination (44.5%) and information on fetal position (20.5%). Thirty-four respondents considered ultrasonography as not perfectly safe for the mother or the “baby”, with the relevant reasons being the use or production of some potentially harmful “rays”. Conclusion: Pregnant women would want to be assured of the wellbeing of the fetus, the gender and position during routine prenatal US. They however need to be informed of its purpose and safety.

关键词： Routine Prenatal US Expectations US Safety

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：