维普中文期刊产品整合服务
329篇 您的检索式:作者名="Sadat"
    题名 作者 年代 出处 被引量
1Applying gravitational search algorithm in the QoS-based Web service selection problem显示文摘With the growing use of service-oriented architecture for designing next generation software systems,the service composition problem and its execution complexity have become even more important in responding to different user requests.The gravitational search algorithm is one of the latest heuristic algorithms.It has a number of distinguishing features,such as rapid convergence,lower memory usage,and the use of particular parameters,for instance,the distance between the solutions.In this paper,we propose a model for the optimization of the Web service composition problem based on qualitative measures and the gravitational search algorithm.To determine the efficacy of this proposed model we solve the problem with the particle swarm optimization algorithm for comparison.Simulation results show that the gravitational search algorithm has a high potential and substantial efficiency in finding the best combination of Web services.Bahareh ZIBANEZHAD Kamran ZAMANIFAR Razieh Sadat SADJADY Yousef RASTEGARI 2011Journal of Zhejiang University-Science C(Computers and Electronics)2011,12,9:13
2Sedimentary and geochemical evidence of Eocene climate change in the Xining Basin, northeastern Tibetan Plateau显示文摘The northeastern Tibetan Plateau began to grow during the Eocene and it is important to understand the climatic history of Asia during this period of so-called ‘doubthouse' conditions. However, despite major advances in the last few decades,the evolutionary history and possible mechanisms of Eocene climate change in the northeastern Tibetan Plateau remain unclear.The Xining Basin in the northeastern Tibetan Plateau contains a continuous sequence of Early to Late Eocene non-marine sediments which provides the opportunity to resolve long-term climate changes during this period. In this study, we report the results of analyses of lithofacies, sediment color and geochemistry of bulk samples collected from the Xijigou section of the Xining Basin. An abrupt lithofacies change between the Early(~52–40 Ma) and Late Eocene(~40–34 Ma) indicates a change in the depositional environment from a shallow lake to a playa lake in response to a significant climatic shift. During ~52–40 Ma,higher values of sediment redness(a*), redness/lightness(a*/L*) and higher modified Chemical Index of Weathering(CIW′)indicate a relatively warm and humid climate, while from ~40–34 Ma the lower values of a*, a*/L*and lower CIW′ imply subhumid to semi-arid climatic conditions. The paleoclimatic records indicate a long-term(~52–34 Ma) trend of decreasing chemical weathering, consistent with global climate change. An abrupt sharp excursion of the proxy records during ~42–40 Ma suggests a relatively brief warm interval, corresponding to the Middle Eocene Climatic Optimum(MECO). We suggest that global cooling substantially reduced humidity in inner Asia, resulting in sub-humid to semi-arid climatic conditions after 40 Ma in the Xining Basin, which may have been responsible for the long-term trend of decreasing chemical weathering during the Eocene.Abu Sadat Md SAYEM Zhengtang GUO Haibin WU Chunxia ZHANG Fan YANG Guoqiao XIAO Zhilin HE 2018Science China Earth Sciences2018,61,9:6
3Association of a genetic variant in AKT1 gene with features of the metabolic syndrome显示文摘Metabolic syndrome(MetS)is a clustering of metabolic abnormalities that is associated with increased risk of developing cardiovascular disease and type 2 diabetes.There is growing body of data showing the associations of genetic variants of the genes involved in the PI3K/AKT/mTOR pathway with diabetes and obesity.We aimed to investigate the association between MetS and its components with the genetic polymorphism in AKT1,rs1130233(T>C).Total of 618 participants,recruited from Mashhad stroke and heart atherosclerosis disorder cohort(MASHAD study).Patients with MetS were defined by using international diabetes federation(IDF)criteria(n Z 326)and those without MetS(n Z 261)were recruited.Anthropometric and biochemical parameters were measured in all subjects.Genetic analysis for the rs1130233 polymorphism was performed,using the ABI-StepOne instruments with SDS version-2.0 software.Individuals with MetS had a significantly higher levels of BMI,waistcircumference,total cholesterol,triglyceride,high sensitivity-c reactive protein(hs-CRP)and blood-pressure,and lower concentrations of high density lipoprotein(HDL-C),compared to non-MetS individuals(P<0.05).The association between the rs1130233 and MetS was not significant.Subjects with a CC or CT genotypes had a significantly higher serum hs-CRP-level(OR:1.5;95%CI(1.05e2.1),P Z 0.02).Additionally,subjects who carried the TC genotype had a higher BMI compared to the CC genotype(p value Z 0.045).Our findings demonstrated that AKT1,rs1130233(T>C)polymorphism was associated with major components of MetS such as hs-CRP,and BMI,indicating further investigation in a multi-center setting to explore its value as an emerging biomarker of risk stratification marker.Fateme Sadat Eshaghi Hamideh Ghazizadeh Sakine Kazami-Nooreini Ameneh Timar Habibollah Esmaeily Mehrane Mehramiz Amir Avan Majid Ghayour-Mobarhan 2019Genes & Diseases2019,6,3:6
4Molecular study of HCV detection,genotypes and their routes of transmission in North West Frontier Province,Pakistan显示文摘Objective:To determine hepatitis C virus(HCV) genotypes and explore the associated risk factors in chronic HCY patients.Methods:A total of 116 patients with chronic hepatitis C were subjected to polymerase chain reaction(PCR) based detection out of which 112 chronic HCV patients[53 male(47.32%),59 female(52.68%);mean age(43.76±16.40) years;mean BMI(23.8± 3.9)kg]were enrolled in this study.The frequency of 6 HCV genotypes and associated risk factors were evaluated from five districts of North West Frontier Province(NWFP).Results:Genotype 3was the most prevalent in 73 samples(65.17%) followed by genotype 1 in 24(21.42%) and genotype2 in 13(11.60%) samples.Genotype3 had significantly high prevalence(P=0.0002).The results showed that 48(42.85%) samples were infected with HCV 3a:25(22.32%) with 3b;14(12.50%) with 1a;10(8.92%)with 1b;11(9.82%) with 2a;2(1.78%) with 2b;and 2 were untypable.The distribution of HCV genotypes in Murdan.Charsadda,Peshawar.Sawabi and Nowshehra districts was different.Use of unsterile equipment lor medication,barbers and previous history of hospitalization were the main risk factors for HCV transmission.Conclusions:Cenotype 3a and 3b.1a.1b and 2a are the common genotypes in NWFP.Genotype 4.5.and 6 can not be found in a single sample.The level of awareness about various modes ot transmission of HCV among the population is found to be verv low.Asher Zaman Safi Yasir Waheed Joharia Sadat Solat-Ul-Islam Sadia Salahuddin Umar Saeed Muhammad Ashraf 2012Asian Pacific Journal of Tropical Biomedicine2012,2,7:5
5Continuous wound infusion of local anaesthetic agents following colorectal surgery:Systematic review and meta-analysis显示文摘AIM:To provide a specifi c review and meta-analysis of the available evidence for continuous wound infusion of local anaesthetic agents following midline laparoto-my for major colorectal surgery. METHODS: Medline, Embase, trial registries, conference proceedings and article reference lists were searched to identify randomised, controlled trials of continuous wound infusion of local anaesthetic agents following colorectal surgery. The primary outcomes were opioid consumption, pain visual analogue scores (VASs), return to bowel function and length of hospital stay. Weighted mean difference were calculated for continuous outcomes. RESULTS: Five trials containing 542 laparotomy wounds were eligible for inclusion. There was a sig- nificant decrease in post-operative pain VAS at rest on day 3 (weighted mean difference: -0.43; 95% CI: -0.81 to -0.04; P = 0.03) but not on post-operative day 1 and 2. Local anaesthetic infusion was associated with a signifi cant reduction in pain VAS on movement on all three post-operative days (day 1 weighted mean difference: -1.14; 95% CI: -2.24 to -0.041; P = 0.04, day 2 weighted mean difference: -0.97, 95% CI: -1.91to -0.029; P = 0.04, day 3 weighted mean difference: -0.61; 95% CI: 1.01 to -0.20; P = 0.0038). Local an- aesthetic wound infusion was associated with a signifi - cant decrease in total opioid consumption (weighted mean difference: -40.13; 95% CI: -76.74 to -3.53; P = 0.03). There was no signifi cant decrease in length of stay (weighted mean difference: -20.87; 95% CI: -46.96 to 5.21; P = 0.12) or return of bowel function (weighted mean difference: -9.40; 95% CI: -33.98 to 15.17; P = 0.45). CONCLUSION: The results of this systematic re- view and meta-analysis suggest that local anaesthetic wound infusion following laparotomy for major color- ectal surgery is a promising technique but do not pro- vide conclusive evidence of benefi t. Further research is required including cost-effectiveness analysis.Alan Karthikesalingam Stewart R Walsh Sheraz R Markar Umar Sadat Tjun Y Tang Charles M Malata 2008World Journal of Gastroenterology2008,14,34:4
6Burial and thermal maturity modeling of the Middle Cretaceous-Early Miocene petroleum system,Iranian sector of the Persian Gulf显示文摘The Cretaceous Kazhdumi and Gurpi formations, Ahmadi Member of the Sarvak Formation, and Paleogene Pabdeh Formation are important source rock candidates of the Middle Cretaceous–Early Miocene petroleum system in the Persian Gulf. This study characterizes generation potential, type of organic matter, and thermal maturity of 262 cutting samples(marls and argillaceous limestones) from these rock units taken from 16 fields in the Iranian sector of the Persian Gulf. In addition, the burial and thermal histories of these source rocks were analyzed by one-dimensional basin modeling. Based on the total organic carbon and genetic potential values, fair hydrocarbon generation potential is suggested for the studied samples. Based on T max and vitrinite reflectance values, the studied samples are thermally immature to mature for hydrocarbon generation. The generated models indicate that studied source rocks are immature in central wells. The Gurpi and Pabdeh formations are immature and the Ahmadi Member and Kazhdumi Formation are early mature in the western wells. The Pabdeh Formation is within the main oil window and other source rocks are at the late oil window in the eastern wells. The hydrocarbon expulsion from the source rocks began after deposition of related caprocks which ensures entrapment and preservation of migrated hydrocarbon.Zahra Sadat Mashhadi Ahmad Reza Rabbani Mohammad Reza Kamali Maryam Mirshahani Ahmad Khajehzadeh 2015Petroleum Science2015,12,3:4
7Analysis of Fractional-order Linear Systems with Saturation Using Lyapunov's Second Method and Convex Optimization显示文摘In this paper,local stability and performance analysis of fractional-order linear systems with saturating elements are shown,which lead to less conservative information and data on the region of stability and the disturbance rejection.Then,a standard performance analysis and global stability by using Lyapunov's second method are addressed,and the introduction of Lyapunov's function candidate whose sub-level set provide stability region and performance with a restricted state space origin is also addressed.The results include both single and multiple saturation elements and can be extended to fractional-order linear systems with any nonlinear elements and nonlinear noise that satisfy Lipschitz condition.A noticeable application of these techniques is analysis of control fractional-order linear systems with saturation control inputs.Esmat Sadat Alaviyan Shahri Saeed Balochian 2015International Journal of Automation and computing2015,12,4:3
8根癌农杆菌介导遗传转化烟草‘NC89’效率的影响因素(英文)显示文摘【目的】通过农杆菌介导将PBI121:CslA1基因转入烟草‘NC89’,研究遗传转化的影响因素,旨在提高转化效率,优化相关技术。【方法】通过培养基的筛选在MS培养基+6-BA(2.0 mg/L)+NAA(1.0 mg/L)获得了大量的幼苗,以其作为转基因受体材料,通过控制农杆菌浓度、预培养时间、农杆菌侵染时间、共培养时间等条件,进行含卡那选择性培养基的筛选,获得转基因壮苗。【结果】最佳的转基因植株培养方法为:共培养2 d以后,农杆菌的浓度D600为0.7,农杆菌诱导20 min,培养基的卡那质量浓度为100 mg/m L;暗培养4 d易于提高再生率,更换选择性培养基后暗培养7 d,更容易缩短愈伤诱导的时间。用RT-PCR和Southern杂交进一步验证和分析了转基因的结果。【结论】通过优化转基因的各环节条件,实现烟草的过量表达,提高了转基因的效率。研究结果可为农杆菌介导转化法在烟草及其相关植物的遗传转化应用提供参考。MALEKI Samaneh Sadat MOHAMMADI Kourosh 季孔庶 2018南京林业大学学报(自然科学版)2018,42,1:3
9Analysis of the ferroelectric phase transition in BaAl2O4 by group theoretical methods and first-principles calculations 显示文摘Stokes H T Sadate C Hatch D M 2002Phys Rev B2002,65,06:2
10Clinical predictors of colorectal polyps and carcinoma in a low prevalence region: Results of a colonoscopy based study显示文摘AIM: To estimate the prevalence of colorectal cancer (CRC) in patients with long lasting colonic symptoms undergoing total colonoscopy; and to establish clinical features predicting its occurrence. METHODS: This prospective study was carried out in Imam Hospital, Tabriz University of medical sciences, Iran. Continuous patients with long lasting lower gastrointestinal tract symptoms who had the criteria of a colonoscopy were included. The endoscopist visualized the caecum documented by a photo and/or a specimen from terminal ileum. RESULTS: Four hundred and eighty consecutive symptomatic patients [mean age (SD): 42.73 (16.21)] were included. The prevalence of colorectal neoplasia was 15.3% (34 subjects) and 37.7% (181 subjects) had a completely normal colon. Adenomatous polyps were detected in 56 (11.7%) patients, in 12.3% of men and 10.9% of women. The mean age of the patients with a polyp was significantly higher than the others (49.53 ± 14.16 vs 41.85 ± 16.26, P = 0.001). Most of the adenomatous polyps were left sided and tubular; only 22.5% of polyps were more than 10 mm. Cancer was detected in 16 (3.6%) of our study population, which was mostly right sided (57.2%). The mean age of patients with cancer was significantly higher than the others (60.25 ± 8.26 vs 42.13 ± 16.08, P < 0.005) and higher than patients with polyps [60.25 (8.26) vs 49.53 (1.91) (P < 0.0005)]. None of the symptoms (diarrhea, abdominal pain, rectal bleeding, constipation, altering diarrhea and constipation, history of cancer, known irritable bowel disease, history of polyp and fissure or family history of cancer) were predictors for cancer or polyps, but the age of the patient and unexplainedanemia independently predicted cancer. CONCLUSION: Less advanced patterns and smaller sizes of adenomas in Iran is compatible with other data from Asia and the Middle East, but in contrast to western countries. Prevalence of colonic neoplasia in our community seems to be lower than that in western population. Colonic symptoms are not predictors for polyps or cancer but unexplained anemia and elder age can predict CRC.Yousef Bafandeh Manoochehr Khoshbaten Amir Taher Eftekhar Sadat Sara Farhang 2008World Journal of Gastroenterology2008,14,10:2
11Effects of polyethyleneimine-functionalized MCM-41 on flame retardancy and thermal stability of polyvinyl alcohol显示文摘Hyperbranched polyethylenimine(PEI)-functionalized mesoporous silica(MCM@PEI) was synthesized and used to produce poly(vinyl alcohol)(PVA) nanocomposites.The modified nanofiller was characterized with infrared spectroscopy,thermogravimetric analysis,X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and N_2 adsorption.When compared with pure mesoporous silica(MCM),the MCM@PEI nanoparticles exhibited better dispersion in the PVA matrix.The effects of MCM@PEI on the thermal and flame properties of PVA nanocomposites were also studied.Improvement in the thermal properties was confirmed by enhanced thermal stability and char yield.Incorporation of MCM@PEI in PVA led to a significant drop in the heat release rate and the total heat release.Meisam Shabanian Mehdi Khoobi Farideh Hemati Hossein Ali Khonakdar Khalil Faghihi Udo Wagenknecht Seyed esmaeil Sadat ebrahimia Abbas Shafiee 2015Particuology2015,13,2:2
12采用人工神经网络基因复合算法预测氧化铜矿柱浸工艺铜浸出率(英文)显示文摘采用人工神经网络(ANN)以及人工神经网络和基因复合(GANN)算法来优化氧化铜矿柱浸工艺参数。采用三种高度的浸矿柱(2,4,6 m)和尺寸为<25.4 mm和<50.8 mm的两种矿物来进行浸出实验。在台架实验规模下,对浸矿柱高度、矿粒尺寸、硫酸流速、浸出时间等工艺参数对铜浸出率的影响进行研究,对浸出条件进行优化以得到最大的浸出率。研究结果表明,铜的浸出率随硫酸流速和浸出时间的增加而增加,随矿粒尺寸和浸矿柱高度的减小而增加。对人工神经网络(ANN)、人工神经网络和基因复合(GANN)算法的效率进行了比较,结果表明,人工神经网络和基因复合(GANN)算法比人工神经网络(ANN)算法更有效。采用新提出的算法模型来预测铜的浸出率误差更低。Fatemeh Sadat HOSEINIAN Aliakbar ABDOLLAHZADE Saeed Soltani MOHAMADI Mohsen HASHEMZADEH 2017Transactions of Nonferrous Metals Society of China2017,27,3:2
13Additively manufactured metallic biomaterials显示文摘Metal additive manufacturing(AM)has led to an evolution in the design and fabrication of hard tissue substitutes,enabling personalized implants to address each patient’s specific needs.In addition,internal pore architectures integrated within additively manufactured scaffolds,have provided an opportunity to further develop and engineer functional implants for better tissue integration,and long-term durability.In this review,the latest advances in different aspects of the design and manufacturing of additively manufactured metallic biomaterials are highlighted.After introducing metal AM processes,biocompatible metals adapted for integration with AM machines are presented.Then,we elaborate on the tools and approaches undertaken for the design of porous scaffold with engineered internal architecture including,topology optimization techniques,as well as unit cell patterns based on lattice networks,and triply periodic minimal surface.Here,the new possibilities brought by the functionally gradient porous structures to meet the conflicting scaffold design requirements are thoroughly discussed.Subsequently,the design constraints and physical characteristics of the additively manufactured constructs are reviewed in terms of input parameters such as design features and AM processing parameters.We assess the proposed applications of additively manufactured implants for regeneration of different tissue types and the efforts made towards their clinical translation.Finally,we conclude the review with the emerging directions and perspectives for further development of AM in the medical industry.Elham Davoodi Hossein Montazerian Anooshe Sadat Mirhakimi Masoud Zhianmanesh Osezua Ibhadode Shahriar Imani Shahabad Reza Esmaeilizadeh Einollah Sarikhani Sahar Toorandaz Shima ASarabi Rohollah Nasiri Yangzhi Zhu Javad Kadkhodapour Bingbing Li Ali Khademhosseini Ehsan Toyserkan 2022Bioactive Materials2022,7,9:2
14Redox-sensitive, PEG-shielded carboxymethyl PEI nanogels silencing MicroRNA-21, sensitizes resistant ovarian cancer cells to cisplatin显示文摘A series of branched polyethylenimine(PEI) modifications including PEGylation(PEG2 k-PEI) for steric shielding, redox-sensitive crosslinking for synthesis PEG2 k-PEI-ss nanogels and subsequent carboxymethylation(PEG2 k-CMPEI-ss) for modulation of the polymer pk a have been introduced for cellular delivery of Anti-mi R-21. The synthesis was characterized using 1 H NMR, FTIR, TNBS, potentiometric titration, particle size and ζ potential. Loading of Anti-mi R-21 at various N/P ratios was investigated by gel retardation, ethidium bromide dye exclusion, heparin sulfate competition and DNase I digestion experiments. The mi R-21 silencing was measured by stem-loop RT PCR in A2780 ovarian cancer cell lines whether it is sensitive to resistant to cisplatin. It has been shown that PEG2 k-CMPEI-ss was well suited for delivery of Anti-mi R-21 in terms of nucleic acid loading, preservation against extracellular matrix and nucleases and sequence-specific silencing of mi RNA-21 in vitro. Moreover, it has been demonstrated that pre-treating cells with Anti-mi R-21 loaded nanogels can sensitize them to cis-Pt even at non-toxic concentraions. The results indicate that PEG2 k-CMPEIss mediated micro RNA delivery can be considered as a novel strategy for ovarian cancer therapy.Sanaz Javanmardi Ali Mohammad Tamaddon Mahmoud Reza Aghamaali Ladan Ghahramani Samira Sadat Abolmaali 2020Asian Journal of Pharmaceutical Sciences2020,15,1:2
15Pathogenetic and therapeutic considerations of carotid-cavernous sinus fistulas显示文摘W. Taki I. Nakahara Sh. Nishi K. Yamashita A. Sadatou K. Matsumoto M. Tanaka H. Kikuchi 1994Acta Neurochirurgica (-)1994,,1:2
16高压电选法从石英中分离锆石的新预处理方法(英文)显示文摘静电选矿是一种基于矿物导电性的矿物加工方法。但该方法存在一些严重问题,如对湿度敏感,中矿产率高和含有非导电矿物杂质。为克服这些缺点,本文作者提出一种新的预处理方法,用于在静电选矿前从石英中分离锆石。预处理包括两个阶段:一是使用十二烷基硫酸钠(SDS)作捕集剂调节锆石表面的润湿性,二是喷洒电解质水溶液以提高石英表面的导电性。考察pH值、捕集剂浓度、调节时间、电解质浓度和种类等重要参数对分选效率的影响。研究表明,高压电选的最佳条件如下:pH值为4,SDS浓度为1×10-4 mol/L,调节时间为4 min,NaCl为电解质,其浓度为4.27 mol/L,最佳条件下的分选效率为95.12%。该预处理方法可成功地应用于高压电选前各种组成的导电性或非导电性矿物的分选。Sivash NOURI Fatemeh Sadat HOSEINIAN Bahram REZAI Kamal SABERYAN 2019Transactions of Nonferrous Metals Society of China2019,29,8:2
17Persian medicine non-pharmacological therapies for headache:phlebotomy and wet cupping显示文摘OBJECTIVE: To describe the common causes of headache as well as the different methods of Phlebotomy(Fasd) and wet Cupping(Hijamat) based on Persian Medicine.METHODS: In this study, we searched Google Scholar, Science Direct, Pub Med and Scopus to get any in vitro or clinical evidence of the efficacy and possible mechanisms of phlebotomy or wet cupping on different types of headaches. Also different types of headaches, according to PM, under the title of 'Sodaa'; extracted from famous Persian medical text books with key words including 'Sodaa','Bayze' and 'Shaqiqe'.RESULTS: According to PM, diseases(dystemperament) are created by abnormal alteration in temperament. Temperament is a monolithic quality yielded by interaction between opposing qualities of four elements that are coldness, hotness, dryness and wetness. Headaches are caused by dystemperament(sue-Mizaj) in brain or in total body that are divided into simple and corporal. Common forms of the latter type are Vaporal and Migrant headache(Bokhari and Rihi). Each of these headaches is treated either through phlebotomy or wet cupping.CONCLUSION: In Persian Medicine, Fasd and Hijamat are easy and economical methods for treatment of headache with reasonable results. By describing the precise areas and indications of phlebotomy and wet cupping, this study provides the first step for future clinical trials in this field.Akramo Sadat Atyabi Fatemeh Nejatbakhsh Hoorie Mohammadi Kenari Fatemeh Eghbalian Mohammad Hos-sein Ayati Laila Shirbeigi 2018Journal of Traditional Chinese Medicine2018,38,3:2
18Association of Helicobacter pylori infection with acute myocardial infarction显示文摘Zohreh Khodaii Hosain Vakili Sayyed Mohammad Hossein Ghaderian Reza Akbarzadeh Najar Akram Sadat Tabatabaei Panah 2011Coronary Artery Disease2011,,1:2
19Recycling value of building materials in building assessment systems显示文摘Mohammad Djavad Sagha Zahra Sadat Hosseini Teshnizi 0,,:1
20C-reactive protein (CRP) gene polymorphisms: implication in CRP plasma levels and susceptibility to acute myocardial infarction显示文摘Reza Akbarzadeh Najar Sayyed Mohammad Hossein Ghaderian Akram Sadat Tabatabaei Panah 2012Molecular Biology Reports2012,,4:1
返回顶部 每页显示:
共17页 首页 上一页 第1页 下一页 末页 /17 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费