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47篇 您的检索式:作者名="Davoud"
    题名 作者 年代 出处 被引量
1Multi-objective robot motion planning using a particle swarm optimization model显示文摘Two new heuristic models are developed for motion planning of point robots in known environments.The first model is a combination of an improved particle swarm optimization (PSO) algorithm used as a global planner and the probabilistic roadmap (PRM) method acting as a local obstacle avoidance planner.For the PSO component,new improvements are proposed in initial particle generation,the weighting mechanism,and position-and velocity-updating processes.Moreover,two objective functions which aim to minimize the path length and oscillations,govern the robot’s movements towards its goal.The PSO and PRM components are further intertwined by incorporating the best PSO particles into the randomly generated PRM.The second model combines a genetic algorithm component with the PRM method.In this model,new specific selection,mutation,and crossover operators are designed to evolve the population of discrete particles located in continuous space.Thorough comparisons of the developed models with each other,and against the standard PRM method,show the advantages of the PSO method.Ellips MASEHIAN Davoud SEDIGHIZADEH 2010Journal of Zhejiang University-Science C(Computers and Electronics)2010,11,8:11
2Na2S选择性浸出铜转炉烟灰中的砷及Fe2(SO4)3稳定化砷显示文摘研究砷(As2O3)的Na2S碱性浸出,以及用Fe2(SO4)3沉淀砷。采用基于中心组合设计的响应面法对相关因素的影响进行定量和定性分析,提出用于参数优化的统计模型。结果表明,在Na2S浓度100 g/L,固液比0.163 g/mL和温度80℃的最优预测条件下,89%的砷可从烟灰中去除。研究发现,固液比和Na2S浓度是影响浸出过程的显著因素。在沉淀过程中,当pH为4.8、Fe3+与砷的摩尔比和H2O2与砷的摩尔比分别为5:1和4:1时,浸出液中99.93%以上的砷以无定形砷酸铁的形式被除去。Fe3+与砷的摩尔比和pH值为最显著因素,而且他们之间的相互作用也是显著的。Amirhossein SHAHNAZI Sadegh FIROOZI Davoud HAGHSHENAS FATMEHSARI 2020Transactions of Nonferrous Metals Society of China2020,30,6:10
3Iran supports a great share of biodiversity and floristic endemism for Fritillaria spp.(Liliaceae):A review显示文摘Iran supports a great share of exotic and/or endemic plant genera and species. The genus Fritillaria(Liliaceae) is a precious part of this botanical richness with 19 species, of which 10 are endemic to the country. However, signs are mounting that the country is truly at a crossroads when it comes to preservation of this national wealth. In this regard, an effective conservation strategy should thoroughly consider the classification of Fritillaria, as conservation practices are compromised by knowledge gaps in systematics and taxonomy. As published studies on Fritillaria in Iran have been sporadic and limited in scope, the aim of this review is to provide information necessary to help bridge these information gaps.Our objective is to facilitate increased understanding of the geographic, taxonomic, cytogenetic and phylogenetic status of Iranian Fritilloria, which is vital to meeting the goal of sustainable conservation of the genus in Iran and neighboring areas.Mahmoud Kiani Shirin Mohammadi Alireza Babaei Fatemeh Sefidkon Mohamad Reza Naghavi Mojtaba Ranjbar Seyed Ali Razavi Keramatollah Saeidi Hadi Jafari Davoud Asgari Daniel Potter 2017Plant Diversity2017,39,5:2
4Infrared thin layer drying of saffron(Crocus sativus L.) stigmas:Mass transfer parameters and quality assessment显示文摘Saffron is the most precious and expensive agricultural product. A dehydration treatment is necessary to convert Crocus sativus L. stigmas into saffron spice. To the best of our knowledge, no information on mass transfer parameters of saffron stigmas is available in the literature. This study aimed at investigating the moisture transfer parameters and quality attributes of saffron stigmas under infrared treatment at different temperatures(60,70, …, 110 °C). It was observed that the dehydration process of the samples occurred in a short accelerating rate period at the start followed by a falling rate period. The effective moisture diffusivity and convective mass transfer coefficient were determined by using the Dincer and Dost model. The diffusivity values varied from1.1103 × 10^(-10)m^2·s^(-1)to 4.1397 × 10^(-10)m^2·s^(-1) and mass transfer coefficient varied in the range of 2.6433 × 10^(-7)–8.7203 × 10^(-7)m·s^(-1). The activation energy was obtained to be 27.86 k J·mol^(-1). The quality assessment results showed that the total crocin content increased, when the temperature increased up to90 °C but, in higher temperatures, the amount of crocin decreased slightly. The total safranal content of the samples decreased slightly when drying temperature increased from 60 °C to 70 °C and then continuously increased up to 110 °C. Also, the amount of picrocrocin increased from 83.1 to 93.3 as the drying temperature increased from 60 °C to 100 °C.Mehdi Torki-Harchegani Davoud Ghanbarian Vida Maghsoodi Ahmad Moheb 2017Chinese Journal of Chemical Engineering2017,25,4:2
5Assessment of feasibility of maillard reaction between baclofen and lactose by liquid chromatography and tandem mass spectrometry application to pre formulation studies 显示文摘Farnaz Monajjemzadeh Davoud Hassanzadeh Hadi Valizadeh 2009AAPS Pharm Sci Tech2009,1208,009:1
6Stitched acousto-optic modulator stroboscopic interferometry for characterizing larger micro- structures显示文摘Davoud M Muthukumaran P Sivakumar N 2010Measurement2010,43,8:1
7A kinetic study on the electrophoretic deposition of hydroxyapatite-titania nanocomposite based on a statistical approach 显示文摘HAMIDREZA F JAMSHID A M DAVOUD H F 2012Ceram Int2012,38,67:1
8Conflict Management of Cooperative Organizatuons in Contemporary Iran:A Review Analysis显示文摘Davoud Mojtahed 2007Public Organiz Rev2007,7,:1
9Solving the Facility and Layout and Location Problem by Ant-colony Optimization-meta Heuristic 显示文摘Pour Hamid Davoud Nosraty Mostafa 2006International Journal of Production Research2006,44,23:1
10Estimation of photolysis half-lives of dyes in a continuous-flow system with the aid of quantitative structure-property relationship显示文摘在这份报纸,模型的光分解作用一半生活在水答案并且在下面染紫外(紫外) 放射被使用一个连续流动的 spectrophotometric 方法决定。量的 structureproperty 关系(QSPR ) 研究包括逐步的多重线性回归(MLR ) 和部分最少的广场基于不同 chemometric 工具用 21 个描述符被执行(请) 为光分解作用半衰期的预言(t < 潜水艇 class= “ a-plus-plus ” > 染料的 1/2 ) 。为测试集合混合物的选择,聚类技术的 K 工具被用来分类全部数据集合,以便所有簇适当地在训练和测试集合被代表。与这些模型一起获得的 QSPR 结果在 导出MLR 的模型显示出那,染料的光分解作用一半生活强烈取决于精力最高占据了分子轨道( E <潜水艇class=“ a-plus-plus ”>人),在分子的一个原子的最大的电子密度(编辑<啜class=“ a-plus-plus ”>+)和 lipophilicity ( logP )。当时在源于的模型请,而且上述的 E <潜水艇class=“ a-plus-plus ”>人和编辑<啜class=“ a-plus-plus ”>+描述符,分子的表面区域( S <潜水艇class=“ a-plus-plus ”> m ),分子的重量( MW ), electronegativity (),精力第二最高占据了分子轨道( E <潜水艇class=“ a-plus-plus ”> HOMO-1 )和偶极子时刻(????牣獯汳湩楫杮??Davoud BEIKNEJAD Mohammad Javad CHAICHI 2014Frontiers of Environmental Science & Engineering2014,8,5:1
11大学外语教学改革的价值取向:从对“法”的拘囿转向对人的关注显示文摘外语教学长期拘囿于寻找“最佳的教学方法”。我国大学外语教学领域存在着追赶国外“最新教学法”的现象,将外语学习和教学简单化、模式化,忽视了学习者和教师的认知与情感。Kumaravadivelu首次提出了“后方法”的概念,提出特定性、实践性和可能性三个基本参数的外语教学原则和十大宏观教学策略。教师在教学策略的指导下,结合三个基本参数转化成特定的教学措施,创造出各种不同的微观策略,应用于教学实践。“后方法”教学理念主张动态开放的外语教学,一方面关注对外语学习者的研究,倡导“以学生为中心”;另一方面注重教师对教学理论的反思与创设。教学法研究的重点从“法”的拘囿转向人的自主和自由。教师和学生的主体作用越来越受到关注。王玮 Davoud Borzabadi Farahani 2019教师教育学报2019,6,6:1
12Evaluation of imatinib mesylate(Gleevec) on KAI1/CD82 gene expression in breast cancer MCF-7 cells using quantitative real-time PCR显示文摘Objective: To evaluate the effect of imatinib mesylate on cell viability, anti cancer effect through modulation of KAI1/CD82 gene expression in breast cancer MCF-7 cell line.Methods: The effects of imatinib mesylate on cell viability in MCF-7 cell line were assessed using MTT assay and IC_(50) value was determined. GAPDH and KAI1/CD82 were selected as reference and target genes, respectively. Quantitative real time PCR technique was applied for investigation of KAI1/CD82 gene expression in human breast cancer MCF-7 cells. Subsequently, the quantity of KAI1 compared to GAPDH gene expressions were analyzed using the formula; 2^(-DDCt).Results: Imatinib was showed to have a dose-dependent inhibitory effect on the viability of MCF-7 cells. CD82/GAPDH gene expression ratios were 1.322 ± 0.030(P > 0.05),2.052 ± 0.200(P < 0.05), 2.151 ± 0.270(P < 0.05) for 10, 20 and 40 mmol/L of imatinib concentrations.Conclusions: Based on the present data, imatinib mesylate might modulate metastasis by up-regulating KAI1/CD82 gene expression in human breast MCF-7 cancer cell line.Seyed Ataollah Sadat Shandiz Marjan Khosravani Sepideh Mohammadi Hassan Noorbazargan Amir Mirzaie Davoud Nouri Inanlou Mojgan Dalirsaber Jalali Hamidreza Jouzaghkar Fahimeh Baghbani-Arani Behta Keshavarz-Pakseresht 2016Asian Pacific Journal of Tropical Biomedicine2016,6,2:1
13Mathematical mod- eling of a packed-bed air dehumidifier: The impact of em- pirical correlations 显示文摘AMIR Rahimi DAVOUD Babakhani 2013Journal of Petroleum Science and Engineering2013,108,:1
14Nanobody; an Old Concept and New Vehicle for Immunotargeting显示文摘Fatemeh Rahbarizadeh Davoud Ahmadvand Zahra Sharifzadeh 2011Immunological Investigations2011,,3:1
15Simplified a- nalysis of heat and mass transfer model in liquid desic- cant regeneration process 显示文摘Davoud Babakhani Meysam Soleymani 2010Journal of the Taiwan In- stitute of Chemical Engineers2010,41,:1
16Spatial distribution of sand flies(Diptera: Psychodidae; Larroussius group), the vectors of visceral leishmaniasis in Northwest of Iran显示文摘Objective: To determine spatial distribution of sand flies(Diptera: Psychodidae; Larroussius group), the vectors of visceral leishmaniasis in Ardabil province, Northwest of Iran.Methods: Sand flies were collected using sticky traps from the 30 selected points in Ardabil province, during May-November 2017.The MaxEnt model in GIS software was used for modeling.Results: A total of 2 794 specimens of sand flies were collected, of which 33% were Larroussius subgenus sand flies.Phlebotomus kandelakii and Phlebotomus wenyoni were the highest and lowest collected species respectively.Based on the modeling, four areas in the province were identified with more than 70% probability of the presence of Larroussius group vectors which were at risk of visceral leishmaniasis disease transmission.Conclusions: The distribution of Larroussius subgenus sand flies was observed in all parts of Ardabil.But the northern parts of the province(Germi and Bilesavar counties) as well as central part(Ardabil and Meshkinshahr counties) were of great importance in terms of the presence of Larroussius subgenus sand flies and the possibility of transmission of the visceral leishmaniasis.Eslam Moradi-Asl Yavar Rassi Davoud Adham Ahmad Ali Hanafi-Bojd Abedin Saghafipour Sayena Rafizadeh 2018Asian Pacific Journal of Tropical Biomedicine2018,8,9:1
17The Effect of Perceived Justice in Service Recovery on firm Reputation Repurchase Intention in Airline Industry 显示文摘Davoud Nikbin Hamed Armesh Alireza Heydari Mohammad Jalalkamali 2011African Journal of Business Management2011,5,23:1
18An improved convergent approach for synthesis of erlotinib, a tyrosine kinase inhibitor, via a ring closure reaction of phenyl benzamidine intermediate 显示文摘DAVOUD ASGARI AYUOB AGHANEJAD JAVID SHAHBAZI MOJARRAD 2011Bulletin of the Korean Chemical Society2011,32,3:1
19Mathematical modeling of a packed - bed air dehumidifier:The impact of empir- ical correlations 显示文摘Amir Rahimi Davoud Babakhani 2013Journal of Petroleum Science and Engineering2013,,3:1
20Biological targeting and innovative therapeutic interventions with phage-displayed peptides and structured nucleic acids (aptamers)显示文摘Davoud Ahmadvand Fatemeh Rahbarizadeh Seyed Moein Moghimi 2011Current Opinion in Biotechnology2011,,6:1
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