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Retraction notice to"Computational investigation of powder coating of nanoparticles in supersonic and hypersonic impactors"[Particuology 11(2013)273-281]

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Particuology 2023年第3期74卷 200-200页

作者： Nima Niksefat mousa farhadi Kurosh Sedighi Salman Nourouzi Faculty of Mechanical Engineering Babol University of TechnologyP.O.Box 484BabolIran

This article has been retracted:please see Elsevier Policy on Article Withdrawal(https:/***/about/our-business/policies/articlewithdrawal).This article has been retracted at the request of the *** authors have plagiarized part of a paper by Omid Abouali and Goodarz Ahmadi that had already appeared in Journal of Nanoparticle Research(2005)7:75-88(https:/***/article/10.1007/s11051-004-7910-3).

关键词： please request withdrawal

Computational evaluation concerning the deviation of the atoms in 1-and 4-postions on the six-member ring and the effects on ^(1)HNMR chemical shift

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Frontiers of Chemistry in China 2011年第2期6卷 91-97页

作者： Asadollah farhadi Mohammad Ali TAKASSI Hamid Reza MEMARIAN mousa SOLEYMANI Faculty of Science University of Petroleum TechnologyAhwaz 61981-44471Iran Department of Chemistry Faculty of ScienceUniversity of IsfahanIsfahan 81746-73441Iran

Density functional theory(DFT)calculations were carried out on some cyclohexane derivatives to investigate the deviation atoms on the 1-and 4-positions of chair *** deviations of chair plane of two position in the cyclohexane derivatives were calculated at the B3LYP/6–31++G(d,p)***,we investigated the correlation between deviations of two positions from chair plane on the chemical shift hydrogen atoms on the 4-position.

关键词： cyclohexane heterocyclohexane deviation B3LYP/6-31++G(d p) chemical shift

前后排列旋转圆柱体对流热交换的格子Boltzmann方法解

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应用数学和力学 2012年第4期33卷 406-424页

作者： H·内玛蒂 M·法哈第 K·赛迪戈亥 M·M·皮柔兹 N·N·阿巴塔瑞黄雅意张禄坤巴博尔工业大学机械工程学院伊朗巴博尔不详

用格子Boltzmann方法,数值研究流过前后排列两旋转圆柱体的二维层流.用二阶精度的速度场和温度场,数值化涉及运动的曲线边界.在Reynolds数为100,Prandtl数为0.71时,研究旋转速度比的变化和不同间距的影响.在4种不同间距(3,1.5,0.7,0.2)... 详细信息

用格子Boltzmann方法,数值研究流过前后排列两旋转圆柱体的二维层流.用二阶精度的速度场和温度场,数值化涉及运动的曲线边界.在Reynolds数为100,Prandtl数为0.71时,研究旋转速度比的变化和不同间距的影响.在4种不同间距(3,1.5,0.7,0.2)下,研究旋转速度比的不同范围.结果表明,当间距取大数值时,第1个圆柱体的升力和阻力系数,与单个圆柱体相类似;对所有间距(除间距3以外),第2个圆柱体的升力系数,随着角速度的增加而减小,而阻力系数反而增加.圆柱体表面平均周期Nusselt数的结果表明,当两圆柱体间距小且角速度又低时,热传导是主要的传热机理,而当间距大且角速度又高时,对流是主要的传热机理.

关键词：格子Boltzmann方法(LBM) 旋转圆柱体层流运动的曲线边界

Modeling the energy gain reduction due to shadow in flat-plate solar collectors;Application of artificial intelligence

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Artificial Intelligence in Agriculture 2021年第1期5卷 185-195页

作者： Morteza Taki Rouhollah farhadi Department of Agricultural Machinery and Mechanization Engineering Agricultural Sciences and Natural Resources University of KhuzestanP.O.Box:***MollasaniIran

Energy lost due to shadow in the absorber plate of solar collectors can decrease the solar energy *** some studies,mathematical modeling was applied for calculating the energy gain reduction due to shadow in flatplate solar *** this study,ANN method was developed for modeling the energy gain *** Perceptron(MLP)with one hidden layer and a range of neurons(5–30)by two training algorithms(LM and BR)and tangent sigmoid activation function(TanSig)were used by help of K-fold cross validation *** the first section,six set of solar collector dimensions were used(1×1;1×1.5;1×2;1.5×1.5;1.5×2 and 2×2).In the second section all the range of dimensions were used as the *** results of the first section showed thatMLPwith BR training algorithm can predict the energy gain reductionwith minimumMAPE and RMSE in all the *** best results related to(1.5×1.5)dimension that achieved a MAPE of 0.15±0.09%and RMASE of 4.42±2.43 KJm−2 year−1,*** results of the second section indicated that BR is a better training algorithm than *** MAPE and R2 factors for the best topology(5-27-1)were 0.0610±0.0051%and 0.9999±0.0001,*** results of the sensitivity analysis showed that height has the biggest impact on total energy gain reduction due to shadow in flat-plate solar ***,the results of this study indicated that by using ANN and decrease the energy lost,the efficiency of solar collectors can be increased in all applications such as industry and agriculture.

关键词： Multilayer perceptron Optimization Energy Sensitivity analysis

A selective, sensitive and label-free visual assay of fructose using anti-aggregation of gold nanoparticles as a colorimetric probe

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Chinese Chemical Letters 2016年第6期27卷 847-851页

作者： Foroogh Keshvari Morteza Bahram Khalil farhadi Department of analytical Chemistry Faculty of chemistry Urmia University

A new convenient colorimetric sensor for fructose based on anti-aggregation of citrate-capped gold nanoparticles（Au NPs） is presented. 4-Mercaptophenylboronic acid（MPBA） induces the aggregation of Au NPs, leading to a color change from red to blue. Fructose as a potent competitor has strong affinity for MPBA and a borate ester is formed between MPBA and fructose. There is an obvious color change from blue to red with increasing the concentration of fructose. The anti-aggregation effect of fructose on Au NPs was seen by the naked eye and monitored by UV–vis spectra. Our results showed that the absorbance ratio（A（519）/A（640）） was linear with fructose concentration in the range of 0.032–0.96 μmol/L（R^2= 0.996）, with a low detection limit of 0.01 μmol/L（S/N = 3）. Notably, a highly selective recognition of fructose was shown against other monosaccharide and disaccharide（glucose, mannose, galactose,lactose and saccharose）. With anti-aggregation assays higher selectivity is achievable. The results of this work provide a rapid method for evaluating the quantitative analysis of fructose in human plasma at physiologically meaningful concentrations and at neutral pH. The proposed procedure can be used as an efficient method for the precise and accurate determination of fructose.

关键词： Colorimetric sensor Gold nanoparticles Anti-aggregation Fructose

Production of autotetraploid plants by in vitro chromosome engineering in Allium hirtifolium

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Horticultural Plant Journal 2023年第5期9卷 986-998页

作者： Nasrin farhadi Jaber Panahandeh Alireza Motallebi-Azar Sam Mokhtarzadeh Department of Horticultural Science Faculty of AgricultureUniversity of TabrizTabriz 51666-14766Iran Field Crops Department Faculty of AgricultureUniversity of DuzceDuzce 81620Turkey

Persian shallot has been propagated vegetatively through daughter bulbs and has a narrow genetic *** the present study,to create genetic diversity in terms of ploidy level,the effects of in vitro polyploidization were investigated on morphological,physiological and phytochemical *** colchicine treatments(0,0.3%,0.5% and 0.7% concentrations)for 24,36 and 48 h and oryzalin treatments(0,0.001%,0.002% and 0.004% concentrations)for 4,6 and 8 h were used.A sterile basal plate of bulbs was used for the induction of polyploidy in liquid and solid *** obtaining plantlets,root tip chromosomes were counted for the determination of ploidy *** cytometry was performed to confirm the chromosome counting *** regenerated diploid and tetraploid plantlets were transferred to ex vitro *** and oryzalin were both successful in inducing polyploids and the polyploids induced were tetraploids and *** highest induction of polyploidy was obtained in solid media using 0.5%(w/v)colchicine for 36 h(35.0% polyploidy induction)and in 0.001%(w/v)Oryzalin for 8 h(45.5% polyploidy induction).Differences in plantlet height and weight,bulblet weight,density,stomatal width and length,and chlorophyll content were observed between tetraploid and diploid *** duplication,as a result of tetraploid induction,significantly influenced the antioxidant content and enzyme *** results showed that total phenolic content,allicin,and antioxidant capacity were significantly higher in the tetraploid plantlets than that in the diploid *** loci polymorphisms indicated that the 12 autotetraploid plants(with high allicin content)had different genotypes from the parental diploid ***,in vitro polyploidy induction not only duplicated chromosomes but also altered the DNA sequence in Allium *** vitro induction of tetraploids in *** can be a reliable way to obtain suitable plant material for bre

关键词： Persian shallot Allium hirtifolium Polyploidy Colchicine Oryzalin Molecular marker

Non-isolated Step-up DC-DC Converter Based on Switched Capacitor Cells

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CSEE Journal of Power and Energy Systems 2023年第3期9卷 1161-1172页

作者： Farid Mohammadi Gevork B.Gharehpetian Hasan Rastegar Mohammad farhadi-Kangarlu Amirkabir university of technology TehranIran Faculty of Electrical and Computer Engineering Urmia UniversityUrmiaIran

A non-isolated high gain step-up DC-DC converter for low power applications is suggested in this *** the designed transformerless converter,the main switch current and voltage stress is reduced while maintaining high voltage *** instance,with a duty cycle of 0.5 a voltage gain equal to 5 is achieved while the normalized switch voltage stress is ***,it decreases power losses of active and passive *** the proposed converter design,the switched-capacitor(SC)technique is used to obtain maximum voltage transfer gain using only one *** three modes of operation,i.e.,continuous conduction mode(CCM),boundary conduction mode(BCM),and discontinuous conduction mode(DCM),are studied in *** small signal analysis(SSA)of the designed converter is investigated,and its steady-state model is examined under *** of the proposed converter proposed in this study is assessed and tested using a *** of the converter is recorded above 94%in a wide range of output ***,compared to the other converters,the results suggest satisfactory performance of the designed *** issue of the proposed converter is that its input current is not smooth due to using the switched-capacitor cell in its *** issue is alleviated by using input filters.

关键词： DC-DC converter high voltage gain nonisolated switched capacitor cell voltage stress

Mucosal mast cells are pivotal elements in inflammatory bowel disease that connect the dots:Stress,intestinal hyperpermeability and inflammation

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World Journal of Gastroenterology 2007年第22期13卷 3027-3030页

作者： Ashkan farhadi Jeremy Z Fields Ali Keshavarzian Division of Digestive disease and Nutrition Rush University Medical Center Chicago IL United States

Mast cells (MC) are pivotal elements in several physiological and immunological functions of the gastro- intestinal (GI) tract. MC translate the stress signals that has been transmitted through brain gut axis into release of proinflammatory mediators that can cause stimulation of nerve endings that could affect afferent nerve terminals and change their perception, affect intestinal motility, increase intestinal hyperpermeability and, in susceptible individuals, modulate the inflammation. Thus, it is not surprising that MC are an important element in the pathogenesis of inflammatory bowel disease and non inflammatory GI disorders such as IBS and mast cell enterocolitis.

关键词： Mast cells Intestinal permeability Stress,Inflammatory bowel disease Irritable bowel syndrome Intestinal barrier

An Effective Framework for Fast Expert Mining in Collaboration Networks:A Group-Oriented and Cost-Based Method

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Journal of Computer Science & Technology 2012年第3期27卷 577-590页

作者： Farnoush farhadi Maryam Sorkhi Sattar Hashemi Ali Hamzeh School of Electrical and Computer Engineering Shiraz UniversityShirazIran

The growth of social networks in modern information systems has enabled the collaboration of experts at a scale that was unseen before. Given a task and a graph of experts where each expert possesses some skills, we tend to find an effective team of experts who axe able to accomplish the task. This team should consider how team members collaborate in an effective manner to perform the task as well as how efficient the team assignment is, considering each expert has the minimum required level of skill. Here, we generalize the problem in multiple perspectives. First, a method is provided to determine the skill level of each expert based on his/her skill and collaboration among neighbors. Second, the graph is aggregated to the set of skilled expert groups that are strongly correlated based on their skills as well as the best connection among them. By considering the groups, search space is significantly reduced and moreover it causes to prevent from the growth of redundant communication costs and team cardinality while assigning the team members. Third, the existing RarestFirst algorithm is extended to more generalized version, and finally the cost definition is customized to improve the efficiency of selected team. Experiments on DBLP co-authorship graph show that in terms of efficiency and effectiveness, our proposed framework is achieved well in practice.

关键词： expert team social network team formation