检索结果-南通市图书馆

Cartography of Landslide Susceptibility around the Dias Horst and thies Cliff-Senegal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Geosciences 2017年第6期8卷 821-836页

作者： Issa Ndoye Mapathé Ndiaye Déthié Sarr Papa Sanou Faye Ibrahima Khalil Cissé Laboratoire de Mécanique et Modélisation UFR Sciences de l’Ingénieur Université de Thiès Thiès Sénégal Laboratoire de Mécanique des Sols et des Matériaux Ecole Polytechnique de Thiès Thiès Sénégal

The aim of this work is to map the susceptibility of sites to landslides. To assess the susceptibility of the zone, GIS techniques were used. Susceptibility factors are selected and split into two groups: active and passive factors. Passive factors regroup all the intrinsic conditions existing on the field at all times. The active factors or triggering factors are present sporadically and are added to the passive factors to trigger a landslide. With the weighted overlay method using ArcGIS?, four scenarios have been developed. A first scenario where only passive factors are combined and three scenarios for which we have for each scenario the passive factors combined with an active factor. With these different scenarios, five levels of susceptibility are obtained in the zone. These levels range from very low to very high susceptibility. For the different scenarios, the results show that the zone consists mainly of very low to low susceptibility with at least 61% of the area, followed by moderate susceptibility (23.54% to 38.24%) and last land with high susceptibility to very high with less than 1% of the surface. Fields with high to very high susceptibility are located on the slopes of the hills. Among the active factors, only the rainfall significantly modifies the percentage of land susceptible to landslide but remains in the field of moderate susceptibility. The predicted susceptibilities are closer to the observed landslides around the thies Cliff than to the Dias Horst.

关键词： Cartography Susceptibility Landslides Dias Horst thies Cliff

Modeling a Local Geoid: Application in thies, Senegal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Geosciences 2024年第11期15卷 940-956页

作者： Mouhamadou Moustapha Mbacké Ndour Papa Matar Sylla Babacar Faye Moussa Mbacké Ndour UFR-SI University of Iba Der Thiam Thies Senegal Holding Gueye Dakar Senegal Simon & Christiansen Afrique (S.C.A) Dakar Senegal

Many applications in geodesy, hydrography and engineering require determining heights linked to the geoid. Direct leveling, which is the traditional method of obtaining these elevations, is slow, time consuming and expensive. The contribution of space techniques can make it possible to overcome these constraints provided that we have a precision geoid model compatible with that obtained by the GNSS method. There are today relatively precise regional geoid models, at least outside of mountain ranges, in all developed countries, which is not yet the case in developing countries like Senegal. An alternative is to use local models restricted to a small area. Thus, this study aims to produce a geoid model by combining multi-source data for the city of thies intended mainly to support leveling operations by GNSS. To achieve this objective, direct precision leveling and GNSS leveling (static mode) were carried out covering the study area. The reference points used are, among others, those of the RRS04 (Reference Network of Senegal 2004) and the NGAO53 (General Leveling of West Africa 1953). Additionally, gravimetric measurements were conducted using the Sensor Play-Data Recorder application. The calculation of the model was carried out by the SRBF (Spherical Radial Basis Function) method using the PAGravf4.5 software. The SRBF method uses EGM08 to first calculate height and gravity anomalies. These are then compared with the raw data in order to determine the residuals which will allow the model to be refined. In order to validate our model, control points (GNSS/leveled) were chosen based on a homogeneous geographical distribution in the area in order to evaluate their altitude. An accuracy of less than 2 cm was obtained. Comparing our model with the existing local model GGSV12v1 shows that our model is more accurate.

关键词： Geoid Direct Leveling GNSS Gravity PAGravf4.5 SRBF thies

Prostate Cancer in the thies Region, Senegal: Epidemiological, Diagnostic and Therapeutic Aspects

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Urology 2024年第2期14卷 71-82页

作者： Saint Charles Nabab Kouka Linda Bentefouet Mohamed Jalloh Ngor Mack Thiam Modou Faye Modou Diop Mohamed Cisse Amy Diame Yoro Diallo Cheickna Sylla Department of Urology Faculty of Health Sciences University Iba Der Thiam of Thies Thies Senegal Department of Anatomy Pathology Faculty of Health Sciences University Iba Der Thiam of Thies Thies Senegal Department of Urology University Cheikh Anta Diop De Dakar Dakar Senegal

Introduction: Prostate cancer is the leading urological cancer. It is the most common cancer in men over 50. Objective: To determine the epidemiological, diagnostic and therapeutic characteristics of prostate cancer in hospitals in the Thiès region. Patients and Methods: We conducted a descriptive study from January 1st, 2015 to December 31st, 2020. We included all cases of primary prostate cancer confirmed on histology. Results: We collected data on 318 cases of primary prostate cancer during the study period. Mean patient age was 72.7 years (Range: 49;94 years). Family history of prostate cancer was found in 22 patients (6.91%). The average consultation time was 18.6 months. The circumstances of discovery were dominated by obstructive voiding disorders (97.16%). Digital Rectal examination was suggestive in 55.40% of patients. PSA level was above 20 ng/ml in 76.7% of patients. Prostatic adenocarcinoma was the only histological type (100%). Localized cancer represented 7.2% and locally advanced cancer occurred in 36.5% of cases, while metastatic cancer accounted for 56.3%. Radical prostatectomy was performed in 3.18% of cases. Mortality rate was estimated at 8.50% after 1 year. Conclusion: Prostate cancer is the leading urological cancer in the thies region. It is characterized by the predominance of locally advanced and metastatic forms.

关键词： Prostate Cancer Epidemiology Histology Metastasis Mortality thies

西德thies染色机EVS液位控制器的代替

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

丝绸 1989年第6期 55-55页

作者：李典春山东省昌邑丝绸印染厂

我厂引进的西德thies染色机EVS(H型-L120-SV-5SIL),液位器损坏后,因无备件,给操作工带来许多困难。为解决这个问题,我们自

关键词：液位控制器 thies 继电器电子元件 EVS 染色机西德德国

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

thies公司的高温高压整理机

纺织导报 1994年第6期 28-28页

作者： $$$$

Ｔｈｉｅｓ公司的高温高压整理机ＴｈｅＨｉｇｈＴｅｍｐｅｒａｔｕｒｅ＆ＨｉｇｈＰｒｅｓｓｕｒｅＦｉｎｉｓｈｉｎｇＭａｃｈｉｎｅｂｙＴｈｉｅｓ“ｅｃｏ─ｓｏｆｔ”新型高温高压整理机械专用于针织及机织织物的整理。其槽体宽２... 详细信息

Ｔｈｉｅｓ公司的高温高压整理机ＴｈｅＨｉｇｈＴｅｍｐｅｒａｔｕｒｅ＆ＨｉｇｈＰｒｅｓｓｕｒｅＦｉｎｉｓｈｉｎｇＭａｃｈｉｎｅｂｙＴｈｉｅｓ“ｅｃｏ─ｓｏｆｔ”新型高温高压整理机械专用于针织及机织织物的整理。其槽体宽２０００毫米，与码布机配套，保证双绳...

关键词： thies 槽体布机绳状浴比计量系统盐溶降低消耗

5th OTEMAS thies公司将展出3款新机型

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论