检索结果-南通市图书馆

Functional attributes： Compacting vs decompacting earth- worms and influence on soil structure

Current Zoology 2012年第4期58卷 556-565页

作者： Arnauth MartinezGUEI Yannick BAIDAI Jerome Ebagnerin TONDOH Jeroen HUISING Universit6 Abobo-Adjam6 Sciences de la Nature/Centre de Recherche en Ecologie 08 bp 109 abidjan 08 C6te d'Ivoire CIAT-TSBF Institut d'Economie Rurale CRRA de Sotuba Laboratoire Sol-Eau-Plante c/o Icraf Sahel BPE 5118 B amako Mali CIAT-TSBF Nairobi c/o ICRAF United Nations Avenue P.O. Box 30677-00100 Nairobi Kenya

A short term field mesocosm experiment was performed in semi-deciduous forest areas of Ivory Coast to assess the impact of a decompacting （Hyperiodrilus africanus, Eudrilidae） and two compacting （Millsonia omodeoi and Dichogaster terrae nigrae, Acanthodrilidae） earthworm species on soil properties. These species have been selected for their predominance in the re- gion and their contrasting impact on soil structure. The experimental design consisted of a treatment without worms （control）, and treatments with one, two or three species of earthworms. Both compacting and decompacting earthworms increased water infil- tration rate in all treatments, with marked impact in H. africanus and M. omodeoi＋D, terraenigrae treatments. Interactions be- tween compacting and decompacting species resulted in more large aggregates in comparison to when the compacting species D. terraenigrae was alone. This may be accounted for by their compacting attribute as compacting earthworms are responsible for producing the highest number of large aggregates. The low values of mean weight diameter in treatments combining decompact-ing and compacting earthworms compared with compacting ＂M. omodeoi＂ one also confirmed the trend of decline in soil com-paction in the presence of the decompacting species. These results showed positive impact of species richness on soil structure regulation, which is crucial in ecosystem productivity and support consequently the insurance hypothesis. In fact, this study showed that the preservation of earthworm species belonging to these two contrasting functional groups is essential for the main-tenance of stable soil structure regulation in agro-tropical ecosystems.

关键词： Earthworms Physical properties Compacting and decompacting species Mesocosms

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

A conditioned level-set method with block-division strategy to flame front extraction based on OH-PLIF measurements

引用

Chinese Physics B 2014年第5期23卷 639-652页

作者：韩乐蔡国飙徐旭 Renou Bruno Boukhalfa Abdelkrim School of Astronautics Beijing University of Aeronautics and Astronautics UMR 6614 CORIA INSA de RouenAvenue de l’UniversitéBP 0876801 Saint-Etienne du RouvrayFrance

A novel approach to extract flame fronts, which is called the conditioned level-set method with block division （CLSB）, has been developed. Based on a two-phase level-set formulation, the conditioned initialization and region-lock optimiza-tion appear to be beneficial to improve the efficiency and accuracy of the flame contour identification. The original block- division strategy enables the approach to be unsupervised by calculating local self-adaptive threshold values autonomously before binarization. The CLSB approach has been applied to deal with a large set of experimental data involving swirl- stabilized premixed combustion in diluted regimes operating at atmospheric pressures. The OH-PLIF measurements have been carried out in this framework. The resulting images are, thus, featured by lower signal-to-noise ratios （SNRs） than the ideal image; relatively complex flame structures lead to significant non-uniformity in the OH signal intensity; and, the mag- nitude of the maximum OH gradient observed along the flame front can also vary depending on flow or local stoichiometry. Compared with other conventional edge detection operators, the CLSB method demonstrates a good ability to deal with the OH-PLIF images at low SNR and with the presence of a multiple scales of both OH intensity and OH gradient. The robustness to noise sensitivity and intensity inhomogeneity has been evaluated throughout a range of experimental images of diluted flames, as well as against a circle test as Ground Truth （GT）.

关键词： OH-PLIE flame front extraction level-set optical signal processing

来源：

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

Flow characterization and dilution effects of N_2 and CO_2 on premixed CH_4/air flames in a swirl-stabilized combustor

引用

Chinese Physics B 2014年第3期23卷 382-395页

作者：韩乐蔡国飙王海兴 Renou Bruno Boukhalfa Abdelkrim School of Astronautics Beijing University of Aeronautics and Astronautics UMR 6614 CORIA INSA de Rouen Avenue de l’UniversitèBP08 76801 Saint-Etienne du Rouvray France

Numerically-aided experimental studies are conducted on a swirl-stabilized combustor to investigate the dilution effects on flame stability, flame structure, and pollutant emissions of premixed CH4/air flames. Our goal is to provide a systematic assessment on combustion characteristics in diluted regimes for its application to environmentally-friendly approaches such as biogas combustion and exhanst-gas recirculation technology. Two main diluting species, N2 and CO2, are tested at various dilution rates. The results obtained by means of optical diagnostics show that five main flame regimes can be observed for Nz-diluted flames by changing excess air and dilution rate. CO2-diluted flames follow the same pattern evolution except that all the domains are shifted to lower excess air. Both N2 and CO2 dilution affect the lean blow- out （LBO） limits negatively. This behavior can be counter-balanced by reactant preheating which is able to broaden the flammability domain of the diluted flames. Flame reactivity is degraded by increasing dilution rate. Meanwhile, flames are thickened in the presence of both diluting species. NOx emissions are significantly reduced with dilution and proved to be relevant to flame stability diagrams： slight augmentation in NOx emission profiles is related to transitional flame states where instability occurs. Although dilution results in increase in CO emissions at certain levels, optimal dilution rates can still be proposed to achieve an ideal compromise.

关键词： dilution effect premixed combustion swirl flow optical diagnostics

来源：

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

Endoscopic profile of caustic burns of the university hospital center of Cocody abidjan / Côte d’Ivoire

引用

Gastroenterology & Hepatology Research 2022年第4期4卷 1-3页

作者： SORO Dramane Zataou Soumana Issaka Al-Vera Vanicka De Mbayen Lah Bi Régis Yaogo Abdoulatif Ouattara Amadou Department of Hépato-Gastroentérology Univertsity Hospital of Cocody Abidjan 08 BP 1113Côte d’Ivoire.

Background:To determine the clinical and endoscopic demographic characteristics of the ingestion of acidic products in the digestive endoscopy unit of the Cocody University ***:This was a retrospective,descriptive and analytical study on endoscopic reports,which took place for five years,from January 1,2014,to December 31,*** patients were admitted to the digestive endoscopy unit with the indication of ingestion of caustic *** parameters studied:are demographic,clinical,and *** statistical tests used were Pearson’s CHI 2 and Fisher’s exact *** significance threshold was set at 5%.Results:83 patients were included for an endoscopic prevalence of 1.33%.The mean age was 20.77±16.58 years,with extremes ranging from 1 to 63 *** were divided into 34 men and 49 women for a sex ratio of *** circumstances were observed in 73.49%of cases,followed by attempted autolysis(26.51%).Bleach was the most offending caustic(75.90%),followed by hydrochloric acid(14.46%).FOGD was normal in 53.01%and revealed stage I(41.54%)digestive lesions,followed by stage II(35.39%)and stage III(21.53%).The lesions were preferentially gastric(36.11%),esogastroduodenal(27.78%),and esogastric(22.23%).Based on severity,54.55%of esophageal lesions were stage IIA,53.12%were stage I gastric lesions,and 54.55%were stage IIA duodenal *** case of gastric perforation was noted(1.54%).In univariate analysis,we found a statistically significant link between the age group of 1–14 years and the accidental intake of caustics(P<0.001)on the one hand and the other hand between the age group of 26 years and over and taking for autolysis(P=0.02).Likewise,bleaching was responsible for less severe lesions(P=0.006).Conclusions:The seriousness of the ingestion of caustic products requires early,specialized and multidisciplinary management to improve the short,medium,and long-term prognosis of patients.

关键词： caustic burns bleach hydrochloric acid upper digestive tract FOGD accidental autolysis

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

A study of the factors affecting mobile money penetration rates in the West African Economic and Monetary Union (WAEMU) compared with East Africa

引用

Financial Innovation 2021年第1期7卷 536-561页

作者： Sionfou Seydou Coulibaly Department of Economics and Management University Félix Houphouët Boigny of AbidjanCocodyPO Box:01 BP 974 Abidjan 01AbidjanCôte d’Ivoire

According to the 2017 Global Financial Inclusion(Global Findex)database,the average penetration rate of mobile money accounts in East Africa is higher than that of the *** study attempts to understand the factors driving the adoption and the use of mobile financial services in the WAEMU compared to East *** achieve this,micro-level data from the 2017 Global Findex database are used to perform probit and multinomial logit *** findings reveal that the same determinants influence the adoption and use of mobile money accounts across the populations of both groups of countries,specifically those related to the least vulnerable social categories(i.e.,males,older,more educated,richer and part of the workforce).Therefore,in comparison to East Africa,the delay in the penetration of mobile money accounts observed in the WAEMU may be attributed to insufficient policies for increasing the awareness of the benefits of mobile financial *** study recommends that governments in WAEMU countries promote the use of mobile money accounts among the working-age population(adults aged between 25 and 64)through the improvement of individual income level,and the introduction of incentives into the education system to encourage their population to attain higher levels of education.

关键词： Financial inclusion Mobile money Probit Multinomial logit East Africa WAEMU

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

Giant dedifferentiated liposarcoma of the gastrocolic ligament:A case report

引用

World Journal of Gastrointestinal Surgery 2023年第10期15卷 2376-2381页

作者： Assamoi Brou Fulgence Kassi Kacou Sebastien Yenon Fian Marc Herve Kassi Adja Jacob Adjeme Khader Morel Diarra Cynthia Bombet-Kouame Marcellin Kouassi Surgery and Surgical Specialities Medical Sciences Training and Research UnitAbidjan Felix Houphouet-Boigny UniversityAbidjan 01 BP V 34Cote d'Ivoire Surgery and Surgical Specialities Digestive Surgery UnitUniversity Hospital of CocodyAbidjan 01 BP V13Cote d'Ivoire

BACKGROUND Dedifferentiated liposarcoma(DDLS)has a worse prognosis and occurs most commonly in the retroperitoneal region and rarely in the intraperitoneal *** diagnosis was revolutionized by the combined contributions of histoimmuno-chemistry and molecular *** from surgery,there is no consensus on the optimal treatment for this chemoresistant *** SUMMARY A thirty-year-old black female presented with a large painful abdominal mass occupying nearly the entire abdomen and progressive weight loss was admitted for *** computed tomography showed a large heterogeneous mass of the mesentery that was sized 18 cm×16 cm in size and had heterogeneous contrast *** laparotomy,en bloc excision of the large and multilobulated gastrocolic ligament mass was *** initial postoperative histopathological diagnosis was undifferentiated ***,the results of immunohistochemistry and molecular biology allowed us to confirm the diagnosis of *** tumour followed an aggressive evolution with diffuse metastasis,causing the death of the patient less than 5 mo after the *** Dedifferentiated liposarcomas are rare tumours that typically originate in the retroperitoneum but may arise in unexpected locations.

关键词： Dedifferentiated liposarcoma Gastrocolic ligament mass En bloc excision Immunohistochemistry Molecular biology Worse prognosis Case report

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

Interventional Radiology in Côte d’Ivoire: Analysis and Assessment of the Radiological Risk of the Surgical Team

引用

Open Journal of Applied Sciences 2021年第2期11卷 216-229页

作者： Kouakou Omer Koudou Djakouri Djoman Djama Alfred Agbo Gogon B. D. L. Huberson Monnehan Georges Alain Aka Antonin Koua Laboratoire de physique nucléaire et radioprotection Unité de Formation et Recherche Sciences des Structures de la Matière et Technologie université Félix Houphou&#235 t Boigny 22 BP 582 Abidjan C&#244 te d’Ivoire Higher Normal School Abidjan C&#244 te d’Ivoire Autorité de régulation de sureté et de sécurité nucléaires 08 BP 4028 Abidjan 08 Abidjan Cocody—Riviera Bonoumin Rond-Point Alassane Ouattara Abidjan C&#244 te d’Ivoire

Ionizing radiation is widely used in medical practice for both diagnostic and therapeutic purposes. However, they are not devoid of adverse health effects on exposed operators. Therefore, we propose to assess the radiological risk of the interventional radiology team of the International Polyclinic of Indénié of abidjan during the procedures of Embolization of uterine fibromyomas. The effective and equivalent doses to the extremities and crystals were estimated by TLD dosimeters positioned at different body areas selected on the basis of a radiological analysis of the exposure of personnel during five procedures. The analysis of fluoroscopic and record times showed variability in or an average fluoroscopy time of 32.37 min with extremes of 25.14 to 56.32 min;average record time of 0.52 min with extremes of 0.12 min to 1 min. The annual effective doses were respectively, 4.04 mSv, 3.42 mSv, 2.84 mSv;2.28 mSv, in the Radiologist (R), Operator Assistant (O2);Anesthesiologist (A2), Manipulator (M2). The annual equivalent doses to the radiologist’s predominant extremities and lenses were left index and left lens with values of 37.07 mSv and 9.46 mSv. The estimated doses in our study are reassuring from a regulatory point of view of dose limits. The results of our work have shown no significant short-term danger to the health of personnel.

关键词： Interventional Radiology Embolization of Uterine Fibromyomas Radiological Risk Radiation Protection

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

Former Botanical Garden of ORSTOM(Côte d’Ivoire):What Remain after Thirty Years of Abandonment and Forest Restoration

引用

Journal of Botanical Research 2023年第1期5卷 1-11页

作者： Ouattara Noufou Doudjo Ouattara Ahmed Douffi Kouakou Guy-Casimir KonéDofoungo Coulibaly Brahima Bakayoko Adama Laboratoire d’Ecologie et Développement Durable(LEDD) UFR Sciences de la NatureUniversitéNANGUI ABROGOUA02 BP 801 Abidjan 02Côte d’Ivoire UFR Sciences Biologiques UniversitéPelefero Gon CoulibalyBP 1328 KorhogoCôte d’Ivoire Centre Suisse de Recherches Scientifiques en Côte d’Ivoire(CSRS) 01 BP 1303 Abidjan 01Côte d’Ivoire Centre National de Recherche Agronomique(CNRA) 08 BP 33 Abidjan 08Côte d’Ivoir

Botanical gardens represent important places for ex situ *** of these botanical gardens has been abandoned in Côte d’Ivoire for 30 *** is the former botanical garden of *** study was conducted to determine the level of diversity of this former garden in order to assess the opportunity for its *** authors carried out inventories in 18 quadrats of 500 m2 through the vegetation to collect woody *** measurements(height,diameter)were also recorded to assess the structure of the site.A total of 190 species have been *** belong to 141 genera and 47 *** former botanical garden contains important species because of their origin,status or particularity(threatened,endemic,rarity,etc.).A total of 19 threatened species including 2 endangered and west African endemic(Chrysophyllum azaguieanum ***ège,Placodiscus pseudostipularis)were found at the ***,Chrysophyllum azaguieanum is declared extinct from Côte d’*** species are rare in the flora of Côte d’Ivoire:Balanites wilsoniana,Chrysophyllum azaguieanum,Gilletiodendron kisantuense and Loesenera *** most abundant species is Hopea *** this introduced species is considered globally vulnerable,it presents a risk of invasion in the forest of Côte d’*** diameter and height structures show that all the stages of development are presented indicating a good regeneration on the ***,this botanical garden deserves to be rehabilitated and especially urgent management of Hopea odorata is needed to prevent an invasion of this species.

关键词： Botanical garden ORSTOM Côte d’Ivoire Forest restoration ex situ conservation

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

The delay, symptoms, and survival of Ivorian adolescent girls and young adults with uterine cervical cancer

引用

Gynecology and Obstetrics Clinical Medicine 2021年第3期1卷 153-159页

作者： Edele Kacou Aka Apollinaire Horo Mohamed Fanny Abdoul Koffi Luc Olou Perel Konan Ana Toure-Ecra Mamourou Kone Universite Felix Houphou et Boigny(FHB) AbidjanBPV 34AbidjanCote d'Ivoire Centre Hospitalier Universitaire de Yopougon-abidjan Service de Gynecologie-Obstetrique 21BP 632AbidjanCote d'Ivoire

Objective:To generate data on the nature and duration of cervical cancer symptoms,risk factors for delayed consultation,and diagnosis of adolescent and young adult groups in Cote d'***:This is a hospital-based cross-sectional study,conducted from July 2012 to May 2018,at the Department of Gynecology of the Yopougon teaching hospital in Cote d’*** inclusion criteria were those who were under 40 years of age at the time of diagnosis with oral and written *** whose information was more than 10%insufficient for the standards were excluded from the *** survey files standardized anonymous pre-established data collected using medical records followed by phone ***:The average age of the participants was 34±4.95 years with a minimum of 21 *** mean parity per woman was 3.49±3.***.34.9%were HIV *** median patient delay was 122 days with a long delay in 84.62%of *** median time to total diagnosis was 209 days with a longer total delay in diagnosis of 87.18%.41%of patients honored their treatment,68.75%of which had received surgery,and 31.25%of which had received *** 5-year survival rate was 65%.Conclusion:The Ivorian health system must focus on primary and secondary prevention,the only guarantee to decrease the morbidity and mortality indicators linked to cervical cancer.

关键词： Uterine cervical neoplasm Adolescent Survival Delay

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

Numerical Blow-up for a Nonlinear Heat Equation

引用

Acta Mathematica Sinica,English Series 2011年第5期27卷 845-862页

作者： Firmin K. N'GOHISSE Theodore K. BONI Universite d'Abobo-Adjame UFR-SFA Departement de Mathematiques et Informatique 01 BP 1003 Abidjan 01 Cdte d'Ivoire Institut National Polytechnique Houphouet-Boigny de Yamoussoukro BP 1093 Yamoussoukro Cote d'Ivoire

This paper concerns the study of the numerical approximation for the following initialboundary value problem{ut-uzx=f（u）,t∈（0,1）,t∈（0,T） u（0,t）=0,t∈（0,1）,t∈（0,T） u（x,0）=u0（x）,x∈（0,1）where f（s） is a positive, increasing, C1 convex function for the nonnegative values of s, f（0）〉0, f∞ds/f（s）〈∞, u0∈C1（[0, 1]）, u0（0） = 0, u＇0（1）=0. We find some conditions under which the solution of a semidiscrete form of the above problem blows up in a finite time and estimate its semidiserete blow-up time. We also prove the convergence of the semidiscrete blow-up time to the theoretical one. A similar study has been also undertaken for a discrete form of the above problem. Finally, we give some numerical results to illustrate our analysis.

关键词： Semidiscretization blow-up numerical blow-up time nonlinear heat equations

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：