检索结果-南通市图书馆

Predictive Factors of Renal Damage during Sickle Cell Disease at the Hematology-Oncology Department of Donka University Hospital

引用

Open Journal of Nephrology 2024年第3期14卷 302-312页

作者： Moussa Traoré Ansoumane Sayon Kanté Marthe Sidibé Mamady Diakité Mohammed Lamine Tégui Camara Foussény Diakité Mamadou Saliou Baldé Ibrahima Chérif mustapha Komrabai-Kanu Mohammed Lamine Kaba Nephrology-Hemodialysis Department of Donka University Hospital Conakry Guinea Hematology-Oncology Department of Donka University Hospital Conakry Guinea Hematology-Oncology Department of Ignace Deen University Hospital Conakry Guinea Medical Care Clinic Freetown Sierra-Leone

Introduction: Sickle cell disease, which is the most common hereditary hemoglobinopathy in the world, attacks all body systems, particularly the kidneys. The view of this study was to investigate the predictive factors of kidney damage during sickle cell disease. Materials and methods: It was a retrospective, descriptive and analytical study on files of sickle cell patients hospitalized in the Hematology-Oncology Department of Donka University Hospital during a period from January 1, 2016 to December 31, 2019. Records of sickle cell patients with one or more renal abnormalities were retained. Sickle cell patients without kidney damage were also selected for a comparative study. Only patients without sickle cell disease were excluded. Results: Seventy-five (75) medical records were collected during the study period. From these cases, thirteen (13) records with kidney disease were observed, a frequency of 17%. The mean age of patients was 24.2 years for extremes of 10 and 65 years. The sex ratio was 1.6 in favor of men. The SSFA2 form was the most represented with 92%. 24-hour proteinuria was measured in 13 patients between whom 6 patients (46.2%) had a proteinuria level ≤ 1 g. Eight (8) patients (61.5%) were in stage 1 of chronic kidney disease. The most common type of renal involvement was tubulo-interstitial nephropathy with 8 patients (61.5%). Bivariate analysis showed that elevated serum creatinine (P 2 form of the sickness (P Conclusion: After the observation of an increased serum creatinine and urea, a predominance observation of the SSFA2 form, it should be possible to target patients for whom screening for kidney damage should henceforth be systematic.

关键词： Kidney Damage Predictive Factors Sickle Cell Disease Donka

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 new experimental way for the monitoring of the real/equivalent inservice- time of double base rocket propellant by coupling VST and PCA

引用

Defence Technology（防务技术） 2021年第2期17卷 440-449页

作者： Salim Chelouche Djalal Trache Ilyas maamache Ahmed Fouzi Tarchoun Kamel Khimeche Abderrahmane Mezroua UER Procedes Energetiques Ecole Militaire PolytechniqueEMPBP 17 Bordj-El-Bahri16046AlgiersAlgeria

The assessment of the real in-service-time(RIST)and the equivalent in-service-time(EIST)of double base rocket propellants(DBRPs)is of utmost importance for the safe storage and use of weapon systems as well as the efficiency of the accelerated aging *** this work,four DBRPs with similar chemical composition and different natural aging have been artificially aged at T?338.65 K for 4 months with sampling every 30 *** unaged and artificially aged samples have been investigated by vacuum stability test(VST)at five isothermal temperatures(T?333.15 K,343.15 K,353.15 K,363.15 K,and 373.15 K).The volume of the evolved gases in VST was found to decrease with natural/artificial ***,the VST data were treated and subjected to principal component analysis(PCA).The results showed excellent discrimination of the DBRP samples according to their stability thermal *** of the variance was described by the first principal component(PC1)whose scores were linearly correlated with the natural aging durations when PCA is applied on VST data obtained at T?363.15 *** light of the obtained results,a new experimental way for the estimation of the real/equivalent IST was proposed,which takes into account the impact of the natural aging of the *** approach predicts successfully the RIST of two similar DBRPs with a relative deviation of less than 2%.At the specific heating temperature T?338.65 K,the developed model provides more conceivable EIST values,with asymptotic behavior against artificial aging duration evolution,thus overcoming some shortcomings of the common generalized van’t Hoff formula(GvH).

关键词： Chemometrics van’t hoff rule Natural aging Artificial aging Stability Storage

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

Development,Capitalism Transformation and Marxism

引用

学术界 2019年第2期 185-192页

作者： mustapha Machrafi Faculty of Law Economics and Social Science Mohammed V University

Development,Capitalism Transformation and

关键词： capitalism Marxism sub-Saharan Africa political economy paradigm shift

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

Substructure design optimization and nonlinear responses control analysis of the mega-sub controlled structural system (MSCSS) under earthquake action

引用

Earthquake Engineering and Engineering Vibration 2021年第3期20卷 687-704页

作者： mustapha Abdulhadi Zhang Xun′an Buqiao Fan Muhammad Moman College of Mechanics and Civil Engineering Northwestern Polytechnic UniversityXi’an 710071China

The newly proposed mega sub-controlled structure system(MSCSS)and related studies have drawn the attention of civil engineers for practice in improving the performance and enhancing the structural effectiveness of mega frame ***,there is still a need for improvement to its basic structural *** this project,an advanced,reasonable arrangement of mega sub-controlled structure models,composed of three mega stories with different numbers and arrangements of substructures,are designed to investigate the control performance of the models and obtain the optimal model configuration(model with minimum acceleration and displacement responses)under strong earthquake *** addition,the dynamic parameters that affect the performance effectiveness of the optimal model of MSCSS are studied and *** area of the relative stiffness ratio RD,with different mass ratio MR,within which the acceleration and displacement of the optimal model of MSCSS reaches its optimum(minimum)value is considered as an optimum *** serves as a useful tool in practical engineering *** study demonstrates that the proposed MSCSS configuration can efficiently control the displacement and acceleration of high rise *** addition,some analytical guidelines are provided for selecting the control parameters of the structure.

关键词： mega sub-controlled structure system(MSCSS) optimal model viscous damper dynamic parameters control effectiveness response control rubber bearing

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

Gyroscope precession frequency analysis of a five-dimensional charged rotating Kaluza-Klein black hole

引用

Chinese Physics C 2020年第6期44卷 143-153页

作者： mustapha Azreg-Aïnou Mubasher Jamil Kai Lin Engineering Faculty Başkent UniversityBağlıca CampusAnkaraTurkey Institute for Theoretical Physics and Cosmology Zhejiang University of TechnologyHangzhou 310023China School of Natural Sciences National University of Sciences and TechnologyH-12Islamabad 44000Pakistan Institute of Geophysics and Geomatics China University of GeosciencesWuhan 430074China

We study the spin precession frequency of a test gyroscope attached to a stationary observer in the five-dimensional rotating Kaluza-Klein black hole(RKKBH). We derive the conditions under which the test gyroscope moves along a timelike trajectory in this geometry, and the regions where the spin precession frequency diverges. The magnitude of the gyroscope precession frequency around the KK black hole diverges at two spatial locations outside the event horizon. However, in the static case, the behavior of the Lense-Thirring frequency of a gyroscope around the KK black hole is similar to the ordinary Schwarzschild black hole. Since a rotating Kaluza-Klein black hole is a generalization of the Kerr-Newman black hole, we present two mass-independent schemes to distinguish these two spacetimes.

关键词： rotating black hole Kaluza-Klein spin precession gyroscope

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

Thermal Analysis of a Phase Change Material Based Heat Sink for Cooling Protruding Electronic Chips

引用

Journal of Thermal Science 2009年第3期18卷 268-275页

作者： mustapha FARAJI Hamid EL QARNIA EI Khadir LAKHAL Fluids Mechanic and Energetic Laboratory Automatic Environment and Transfer Process Laboratory Cadi Ayyad University Faculty of Sciences Semlalia Department of Physics

This work aims to numerically study the melting natural convection in a rectangular enclosure heated by three discreet protruding electronic chips. The beat sources generate heat at a constant and uniform volumetric rate. A part of the power generated in the heat sources is dissipated to a phase change material （PCM, n-eicosane with melting temperature, Tm = 36℃）. Numerical investigations were carded out in order to examine the effects of the plate thickness on the maximum temperature of electronic components, the percentage contribution of plate heat conduction on the total removed heat and temperature profiles in the plate. Con＇elations for the dimensionless secured working time （time to reach the threshold temperature, Tcr = 75℃） and the corresponding liquid fraction were derived.

关键词： Phase change material protruding electronic component natural convection

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

Hepatic fibrosis： It is time to go with hepatic stellate cell-specifictherapeutic targets

引用

Hepatobiliary & Pancreatic Diseases International 2018年第3期17卷 192-197页

作者： Devaraj Ezhilarasan Etienne Sokal mustapha Najimi Biomedical Research Unit and Laboratory Animal Centre Saveetha Dental College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai 600 077Tamil NaduIndia Institut de Recherche Expérimentale et Clinique(IREC) Laboratory of Pediatric Hepatology and Cell TherapyUniversité Catholique de LouvainBrussels 1200Belgium

Hepatic fibrosis is a pathological lesion, characterized by the progressive accumulation of extracellularmatrix （ECM） in the perisinusoidal space and it is a major problem in chronic liver diseases. Phenotypicactivation of hepatic stellate cells （HSC） plays a central role in the progression of hepatic fibrosis. Retardation of proliferation and clearance of activated HSCs from the injured liver is an appropriate therapeuticstrategy for the resolution and treatment of hepatic fibrosis. Clearance of activated HSCs from the injuredliver by autophagy inhibitors, proapoptotic agents and senescence inducers with the high affinity towardthe activated HSCs may be the novel therapeutic strategy for the treatment of hepatic fibrosis in the nearfuture.

关键词： Hepatic stellate cells Apoptosis Autophagy Senescence Extracellular matrix

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

Seismic design factors for RC special moment resisting frames in Dubai,UAE

引用

Earthquake Engineering and Engineering Vibration 2011年第4期10卷 495-506页

作者： Mohammad AlHamaydeh Sulayman Abdullah Ahmed Hamid Abdilwahhab mustapha Department of Civil Engineering American University of Sharjah

This study investigates the seismic design factors for three reinforced concrete （RC） framed buildings with 4, 16 and 32-stories in Dubai, UAE utilizing nonlinear analysis. The buildings are designed according to the response spectrum procedure defined in the 2009 International Building Code （IBC＇09）. Two ensembles of ground motion records with 10% and 2% probability of exceedance in 50 years （10/50 and 2/50, respectively） are used. The nonlinear dynamic resPonses to the earthquake records are computed using IDARC-2D. Key seismic design parameters are evaluated; namely, response modification factor （R）, deflection amplification factor （Cd）, system overstrength factor （Ωo）, and response modification factor for ductility （Rd） in addition to inelastic interstory drift. The evaluated seismic design factors are found to significantly depend on the considered ground motion （10/50 versus 2/50）. Consequently, resolution to the controversy of Dubai seismicity is urged. The seismic design factors for the 2/50 records show an increase over their counterparts for the 10/50 records in the range of 200%-400%, except for the D~ factor, which shows a mere 30% increase. Based on the observed trends, perioddependent R and Cd factors are recommended if consistent collapse probability （or collapse prevention performance） in moment frames with varying heights is to be expected.

关键词： Seismic design factors reinforced concrete special moment resisting frame Dubai UAE

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

Interpolation in the Automorphism Group of a Polynomial Ring

引用

Algebra Colloquium 2020年第3期27卷 587-598页

作者： M'hammed El Kahoui Najoua Essamaoui mustapha Ouali Department of Mathematics Faculty of Sciences Semlalia Cadi Ayyad UniversityP.O.Box 2390MarrakeshMorocco

Let R be a commutative ring with unity and SA_(n)(R)be the group of volumepreserving automorphisms of the polynomial R-algebra R^([n]).Given a proper ideal a of R,we address in this paper the question of whether the canonical group homomorphism SA_(n)(R)→SA_(n)(R/α)is *** an application,we retrieve and generalize,in a unified way,several known results on residual coordinates in polynomial rings.

关键词： polynomial automorphism coordinate residual coordinate

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

LMI solutions for H-two and H-infinity decentralized controllers applied to an aerothermic process

引用

控制理论与应用（英文版） 2013年第2期11卷 247-254页

作者： Najib BENNIS mustapha RAMZI Mohamed HALOUA Hussein YOULAL ENSET de Rabat Avenue de l'Arme'e Royale Madinat Al Irfane 10100 B. P. 6207 Rabat-InstitutsMorocco LASTIMI EST de sale' Universite' Mohamed V Agdal Avenue Prince sidi Mohammed B.P 227 Sale' Me'dinaMorocco EMI Avenue IbnSina B. P. 765 Agdal RabatMorocco UFR Automatique et Technologies de l'Information Faculte' des Sciences de Rabat Avenue Ibn Batouta B. P. 1014 RabatMorocco

In this paper, we present a linear matrix inequality （LMI）-based solution to implement H-two and H- infinity decentralized robust control strategies. Appropriate parametrization of optimal H-two and H-infinity controllers is used. The general formulation of the decentralized control design leads to the optimal determination of both the state feedback gains and the observer gains of the decentralized controllers. This formulation is two folds： first, a centralized controller is obtained, and then, a simplified decentralized solution is derived by optimizing only the observer gains. The mathematical determination of these gains is formulated as an LMI optimization problem that can be easily solved using LMI solvers. As an experimental evaluation of these controllers, a real time application to an aerothermic process is carried out. A continuous-time model of the process obtained with a suitable direct continuous-time identification approach is elaborated. Results illustrating the real performance obtained from the H-two and H-infinity decentralized controllers are di^cu^ge.d and comnare, d with th~ ce^ntraliTed nn^g

关键词： Parametrization approach Decentralized control H-two/H-infinity control Parameters optimization Lin-ear matrix inequality (LMI) Subspace identification Aerothermic process

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

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：