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Asian Pacific Journal of Tropical Biomedicine 2016年第12期6卷 1044-1049页

作者： Mohamed El Kabbaoui Alae Chda Ouarda Azdad Najlae Mejrhit lotfi aarab Rachid Bencheikh Abdelali Tazi Laboratory of Bioactive Molecules Faculty of Sciences and TechniquesSidi Mohamed Ben Abdellah University(USMBA)

Objective:To evaluate the effect of aqueous leaf extract of Cistus ladaniferus(***) on glycemic and lipidemic status in diabetic ***:Overnight fasted rats were injected intraperitoneally with streptozotocin(45 mg/kg) to induce experimental *** aqueous extract of the leaves of *** was administered orally at the dose of 500 mg/kg body weight to diabetic rats for a period of 28 *** effect,body weight,oral glucose tolerance,change in lipid parameters,urea,creatinine,aspartate aminotransferase and alanine aminotransferase levels of diabetic rats treated with aqueous extract were evaluated in experimental ***:Administration of 500 mg/kg of *** extract to diabetic rats for 28 days resulted in a significant reduction in the levels of blood glucose,alanine aminotransferase,aspartate aminotransferase,urea and ***,the extract of *** improved glucose tolerance in diabetic rats,and its antidiabetic effect was similar to the one obtained with *** hypolipidemic effect was demonstrated by an important decrease in plasma total cholesterol,triglycerides and low density lipoprotein-cholesterol ***:It is concluded that *** leaf extract showed an antidiabetic activity in experimental diabetes which was similar to the one obtained with glibenclamide.

关键词： Cistus ladaniferus Diabetes mellitus Streptozotocin Antidiabetic activity Hypolipidemic activity Glucose tolerance

Microbiological Quality of Dates in the North Center Region of Morocco

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Journal of Life Sciences 2013年第12期7卷 1278-1283页

作者： Taouda Hasnae Errachidi Faouzi aarab lotfi Chabir Rachida Team of Physiopathology and Nutrition Laboratory of Biology Cancer Faculty of Medicine and Pharmacy University SidiMohamed Ben Abdellah Fez 30000 Morocco Bioactives Molecules Laboratory Faculty Saiss of Sciences and Technic University Sidi Mohamed Ben Abdelah Fez 30000Morocco

Date palm （Phoenix dactylifera L.） fruit is an important component in arid and semi-arid diet regions of the world. The present study pointed out microbial investigating of date palm collected from National wholesale market in Fez city in the center north of Morocco. The results reveal that samples dates studied are contaminated by bacteria such as TAMF （total aerobic mesophilic flora）, ASR （anaerobic sulfite reducing）, yeasts and molds. The percentage of yeasts isolated is 50% for Saccharomyces cervisae, 10% for Zygosaccharomyces fermentati, 20% for Hansenula anomala, 10% for Lodderomyces elongisporus and 10% for Kluyveromyces fragilis. The frequency of molds distribution is 51% for Aspergillus niger, 33% for Penicillium notatum and 16% for Rhizopus oryzae. Newman and keuls grouping test shows that fungal germs distribution is equal for yeast and molds in all samples analyzed. In the opposite bacterial grouping test shows greet difference between groups of bacteria isolated from date＇s samples.

关键词： Dates Phoenix dactylifera bacteria fungi and microbial analysis.

Post-discharge follow-up of patients with spine trauma in the National Spinal Cord Injury Registry of Iran during the COVID-19 pandemic:Challenges and lessons learned

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Chinese Journal of Traumatology 2024年第3期27卷 173-179页

作者： Zahra Azadmanjir Moein Khormali Mohsen Sadeghi-Naini Vali Baigi Habibollah Pirnejad Mohammad Dashtkoohi Zahra Ghodsi Seyed Behnam Jazayeri Aidin Shakeri Mahdi Mohammadzadeh Laleh Bagheri Mohammad-Sajad lotfi Salman Daliri Amir Azarhomayoun Homayoun Sadeghi-Bazargani Gerard O'reilly Vafa Rahimi-Movaghai Health Information Management Department School of Allied Medical SciencesTehran University of Medical SciencesTehranIran Sina Trauma and Surgery Research Center Tehran University of Medical SciencesTehranIran Department of Neurosurgery Lorestan University of Medical SciencesKhoram-AbadIran Department of Epidemiology and Biostatistics School of Public HealthTehran University of Medical SciencesTehranIran Patient Safety Research Center Clinical Rsearch Institute Urma Universty of Medical SciencesUrmaIran Erasmus School of Health Policy&Management(ESHPM) Erasmus University RotterdamRoterdamthe Netherlands Brain and Spinal Cord Injury Research Center Neuroscience InstituteTehran University of Medical SciencesTehranIran Students Scientifc Research Center(SSRC) Tehran University of Medical SciencesTehranIran Department of Neurosurgery Arak University of Medical SciencesArakIran Trauma Research Center Kashan University of Medical SciencesKashanIran Shahid Rahnemoun Hospital Shahid Sadoughi University of Medical SciencesYazdIran Trauma Nuring Rearch entre Faculty of Nursing and Midwifry Kahan Universty of Medical Sciences Kahan Iran Clinical Research Development Unit Imam Hossein HospitalShahroud University of Medical SciencesShahroudIran Research Center for Evidence Based Medicine Faculty of MedicineTabriz University of Medical SciencesTabrizIran Road Trafic Injury Research Center Tabriz University of Medical SciencesTabrizIran School of Public Health and Preventive Medicine Monash UniversityMelbourneAustralia National Trauma Research Institute The AlfredMelbourneAustralia Department of Neurosurgery Shariati HospitalTehran University of Medical SciencesTehranIran Universal Scientific Education and Research Network(USERN) TehranIran Institute of Biochemistry and Biophysics University of TehranTehranIran

Purpose:The purpose of the National Spinal Cord Injury Registry of Iran(NSCIR-IR)is to create an infrastructure to assess the quality of care for spine trauma and in this study,we aim to investigate whether the NSCIR-IR successfully provides necessary post-discharge follow-up data for these ***:An observational prospective study was conducted from April 11,2021 to April 22,2022 in 8 centers enrolled in NSCIR-IR,respectively Arak,Rasht,Urmia,Shahroud,Yazd,Kashan,Tabriz,and *** were classified into 3 groups based on their need for care resources,respectively:(1)non-spinal cord injury(SCI)patients without surgery(group 1),(2)non-SCI patients with surgery(group 2),and(3)SCI patients(group 3).The assessment tool was a self-designed questionnaire to evaluate the care quality in 3 phases:pre-hospital,in-hospital,and *** data from the first 2 phases were collected through the *** post-hospital data were collected by conducting follow-up *** follow-ups were conducted for groups 1 and 2(non-SCI patients),while group 3(SCI patients)had a face-to-face *** study took place during the COVID-19 *** on age and time interval from injury to follow-up were expressed as mean±standard deviation(SD)and response rate and follow-up loss as a ***:Altogether 1538 telephone follow-up records related to 1292 patients were registered in the *** the total calls,918(71.05%)were related to successful follow-ups,but 38 cases died and thus were excluded from data *** the end,post-hospital data from 880 patients alive were *** success rate of follow-ups by telephone for groups 1 and 2 was 73.38%and 67.05%respectively,compared to 66.67%by face-to-face visits for group 3,which was very hard during the COVID-19 *** data completion rate after discharge ranged from 48%-100%,22%-100%and 29%-100%for groups ***:To improve patient accessibility,NSCIR-IR should take me

关键词： Follow-up studies Spinal injuries Spinal cord injuries COVID-19 NSCIR-IR

Elevated temperature oxidation behavior of HVOF sprayed TiB_2 cermet coating

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Transactions of Nonferrous Metals Society of China 2010年第2期20卷 243-247页

作者： Behnam lotfi Department of Materials Engineering Faculty of EngineeringShahid Chamran UniversityAhvazIran

Oxidation behaviors of Ni(Cr)-TiB2 coating deposited by HVOF technique were studied at 800,900 and 1 000℃in air. The microstructures of as-sprayed and oxidized coatings were characterized by X-ray diffractometry(XRD)and scanning electron microscopy(SEM).After oxidation at 800℃,a thin and adherent oxide layer was formed on the surface of the *** increasing exposure temperature,the thickness of the oxide layer increased;and at 1 000℃the oxide layer separated from the *** of the kinetics of oxidation by using the thermogravimetric analysis(TGA)technique shows a parabolic oxidation rate.

关键词： TiB2 cermet coating thermal spraying oxidation

Design issues for human-machine platform interface in cable-based parallel manipulators for physiotherapy applications

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第4期11卷 231-239页

作者： Marco CECCARELLI lotfi ROMDHANE Laboratory of Robotics and Mechatronics DIMSATUniversity of Cassino-CassinoItaly Département de Mécanique Avancée Ecole Nationale d'Ingénieurs de SousseTunisia

We outline problems and potential solutions for feasible human-machine interfaces using cable-based parallel manipulators for physiotherapy *** an engineering perspective,we discuss the design constraints related to acceptance by patients and physiotherapist *** date,most designs have focused on mobile platforms that are designed to be operated as an end-effector connected to human limbs for direct patient *** specific examples are illustrated from the authors' experience with prototypes available at Laboratory of Robotics and Mechatronics (LARM),Italy.

关键词： Robot design Robot applications Cable-based parallel manipulators Human-machine mechanical interfaces

An Efficient Two-Phase Model for Computing Influential Nodes in Social Networks Using Social Actions

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Journal of Computer Science & Technology 2018年第2期33卷 286-304页

作者： Mehdi Azaouzi lotfi Ben Romdhane Modeling of Automated Reasoning Systems Research Laboratory LR17ES05 Higher Institute of Computer Science and Telecom University of Sousse Sousse 526-~002 Tunisia

The measurement of influence in social networks has received a lot of attention in the data mining community. Influence maximization refers to the process of finding influential users who make the most of information or product adoption. In real settings, the influence of a user in a social network can be modeled by the set of actions （e.g., ＂like＂, ＂share＂, ＂retweet＂, ＂comment＂） performed by other users of the network on his/her publications. To the best of our knowledge, all proposed models in the literature treat these actions equally. However, it is obvious that a ＂like＂ of a publication means less influence than a ＂share＂ of the same publication. This suggests that each action has its own level of influence （or importance）. In this paper, we propose a model （called Social Action-Based Influence Maximization Model, SAIM） for influence maximization in social networks. In SAIM, actions are not considered equally in measuring the ＂influence power＂ of an individual, and it is composed of two major steps. In the first step, we compute the influence power of each individual in the social network. This influence power is computed from user actions using PageRank. At the end of this step, we get a weighted social network in which each node is labeled by its influence power. In the second step of SAIM, we compute an optimal set of influential nodes using a new concept named ＂influence-BFS tree＂. Experiments conducted on large-scale real-world and synthetic social networks reveal the good performance of our model SAIM in computing, in acceptable time scales, a minimal set of influential nodes allowing the maximum spreading of information.

关键词： social network social influence social action personalized PageRank influence-BFS tree

Microstructure and Sliding Wear Behaviour of Ni(Cr)-TiB_2 Coatings Deposited by HVOF Spraying of SHS Powders

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材料热处理学报 2004年第5B期25卷 1183-1186页

作者： Behnam lotfi Zohreh Sadeghian Faculty of Engineering Department of Materials Engineering Shahrecord University Shahrecord IranDepartment of Materials Science and Engineering Isfahan University of Technology Isfahan Iran

This work reports research concerning the microstructure and sliding wear behaviour of cermet coatings deposited by high velocity oxy-fuel (HVOF) spraying. Two cermets were prepared with the following target compositions namely, Ni (Cr)-65 wt.% TiB2 and Ni (Cr)-40 wt.% TiB2. Coating microstructures were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD), whilst microhardness and sliding wear tests were performed on the coatings to evaluate their performance. The HVOF sprayed deposits had layered, splat-like morphologies typical of thermally sprayed cermets. Coatings consisted primarily of TiB2 particles in a nickel-based binder phase. Other minor peaks in the XRD patterns belong to TiB, Ni2B, NiTiO3 and Ti2Oj. The coatings exhibit an amorphous halo in the diffraction pattern between 2 values of 40° and 50°. Sliding wear behaviour was examined using a conventional ball-on-disc apparatus. A sintered ceramic ball (A12O3) was employed as the counterface. The Ni (Cr)-65 wt.% TiB2 coating had a lower wear rate than Ni (Cr)-40 wt.% TiB2 coating. This may be related to the larger sizes of borides. Wear scar morphologies, on both coatings were examined by using SEM and EDAX detecting in order to establish the wear mechanism. Wear is proposed to proceed by subsurface cracking in these coatings.

关键词：显微结构滑动磨损 SHS HVOF Ni(Cr)-TiB2合金

High performance novel flexible perovskite solar cell based on a low-cost-processed ZnO:Co electron transport layer

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Nano Research 2020年第9期13卷 2546-2555页

作者： Feriel Bouhjar lotfi Derbali BernabéMari Institut de Disseny i Fabricació(IDF)-Departament de Fisica Aplicada Universitat Politecnica de Valenciciy Cami de Vera s/n46022 ValenciaSpain Photovoltaic Laboratory Research and Technology Centre of Energy(CRTEn)Borj-Cedria Science and Technology Parky BP 952050 Hammam-LifTunisia Laboratory of Semiconductors Nanostructures and Advanced TechnologyResearch and Technology Center of Energy(CRTEn)Borj-Cedria Science and Technology ParkBP 952050 Hammam-LifTunisia Department of Physics College of Sciences and HumanitiesAl QuwayiyahShaqraa UniversityAl QuwayiyahSaudi Arabia

In this work,high quality uniform and dense nanostructured cobalt-doped zinc oxide(ZnO:Co)films were used as electron-transport layers in CH3NH3Pbl3-based planar heterojunction perovskite solar cells(PSCs)on a flexible conductive *** photo catalytically active ZnO:Co films were prepared by a low cost hydrothermal process using the aqueous solution of zinc nitrate hexahydrate,hexamethylenete-tramine and cobalt(II)nitrate ***:Co films were deposited on indium tin oxide(ITO)covered polyethylene terephthalate(PET)flexible *** growth was controlled by maintaining the autoclave temperature at 150℃for 4 *** CH3NH3Pbl3 layer was deposited on the ZnO:Co films by spin ***-OMeTAD was employed as a hole-transporting *** structural,morphology and optical properties of the grown ZnO nanostructures were characterized by X-ray diffraction(XRD),field-emission scanning electron microcopy(FESEM),energy-dispersive X-ray spectrometry(EDX),ultraviolet-visible(UV-Vis)and photoelectrochemical *** spectra showed that both ZnO and ZnO:Co nanorods had a hexagonal wurtzite structure with a strong preferred orientation along the(002)*** surface morphology of films was studied by FESEM and showed that both the pure and Co-doped ZnO films had hexagonal shaped *** the steady state,the ZnO electrode gave a photocurrent density of about 1.5 mA/***,the Co-doped ZnO electrode showed a photocurrent density of about 6 mA/cm^2,which is 4-fold higher than that of the ZnO *** on the above synthesized Co-doped ZnO films,the photovoltaic performance of PSCs was *** Co-doped ZnO layers had a significant impact on the photovoltaic conversion efficiency(PCE)of the *** latter was attributed to an efficient charge separation and transport due to the better coverage of perovskite on the nanostructured Co-doped ZnO *** a result,the measured PCE under standard solar conditions(A M 1.5G,100 mW/cm^2)r

关键词： perovskite solar cell ZnO nanorods hydrotherm al deposition X-ray diffraction(XRD)analysis field-em ission scanning electron m icrocopy(FESEM)analysis photoelectrochem ical properties

Hybrid Flow Shop with Setup Times Scheduling Problem

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Computer Systems Science & Engineering 2023年第1期44卷 563-577页

作者： Mahdi Jemmali lotfi Hidri Department of Computer Science and Information College of Science at ZulfiMajmaah UniversityMajmaah11952Saudi Arabia Mars Laboratory University of SousseSousseTunisia Department of Computer Science Higher Institute of Computer Science and Mathematics of MonastirMonastir UniversityMonastir5000Tunisia Industrial Engineering Department College of EngineeringKing Saud UniversityRiyadh11421Saudi Arabia

The two-stage hybridflow shop problem under setup times is addressed in this *** problem is *** the other hand,the studied problem is modeling different real-life applications especially in manufacturing and high *** this kind of problem requires the development of adapted *** this context,a metaheuristic using the genetic algorithm and three heuristics are proposed in this *** approximate solutions are using the optimal solution of the parallel machines under release and delivery ***,these solutions are iterative procedures focusing each time on a particular stage where a parallel machines problem is called to be *** general solution is then a concatenation of all the solutions in each *** addition,three lower bounds based on the relaxation method are *** lower bounds present a means to evaluate the efficiency of the developed algorithms throughout the measurement of the relative *** experimental result is discussed to evaluate the performance of the developed *** total,8960 instances are implemented and tested to show the results given by the proposed lower bounds and *** indicators are given to compare between *** results illustrated in this paper show the performance of the developed algorithms in terms of gap and running time.

关键词： Hybridﬂow shop genetic algorithm setup times heuristics lower bound

Effect of silicon content on microstructure of Al-Si/SiC_p composite layer cladded on A380 Al alloy by TIG welding process

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Transactions of Nonferrous Metals Society of China 2014年第9期24卷 2824-2830页

作者： Behnam lotfi Mehdi ROSTAMI Zohreh SADEGHIAN Department of Materials Science and Engineering Faculty of Engineering Shahid Chamran UniversityAhvaz Iran

Tungsten inert gas（TIG） welding was applied to creating a composite layer on the surface of cast aluminum alloy A380. Different mixtures of Al, Si and SiC powders mixed with sodium silicate solution were pasted on substrates. Surface melting was conducted by TIG welding to produce Al-SiC layer on the surface. Microstructural evolution was investigated by X-ray diffractometry（XRD）, optical and scanning electron microscopy（SEM） and elemental microanalysis（EDS）. Properties of clad layers were studied by microhardness and sliding wear testing. The results showed a uniform distribution of SiC particles in dendritic aluminum matrix. Addition of excess silicon caused the formation of eutectic crystals and coarse silicon particles in the clad layer which resulted in higher hardness and wear resistance of clad layers.

关键词： Al-SiC TIG welding composite clad layer wear resistance