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173篇 您的检索式:作者名="GHIASI"
    题名 作者 年代 出处 被引量
1Automatic Guidance of an Agricultural Tractor along with the Side Shift Control of the Attached Row Crop Cultivator显示文摘Javad Robati Hossein Navid Mahdi Rezaei Amir Rikhtehgar Ghiasi 2012Journal of Agricultural Science and Technology(B)2012,2,1:8
2Initial estimation of hydrate formation temperature of sweet natural gases based on new empirical correlation显示文摘Production,processing and transportation of natural gases can be significantly affected by clathrate hydrates.Knowing the gas analysis is crucial to predict the right conditions for hydrate formation.Nevertheless,Katz gas gravity method can be used for initial estimation of hydrate formation temperature (HFT) under the circumstances of indeterminate gas composition.So far several correlations have been proposed for gas gravity method,in which the most accurate and reliable one has belonged to Bahadori and Vuthaluru.The main objective of this study is to present a simple and yet accurate correlation for fast prediction of sweet natural gases HFT based on the fit to Katz gravity chart.By reviewing the error analysis results,one can discover that the new proposed correlation has the best estimation capability among the widely accepted existing correlations within the investigated range.Mohammad Mahdi Ghiasi 2012Journal of Natural Gas Chemistry2012,21,5:6
3Comparative Analysis of Wavelet Transform for Time-Frequency Analysis and Transient Localization in Structural Health Monitoring显示文摘A critical problem facing data collection in structural health monitoring,for instance via sensor networks,is how to extract the main components and useful features for damage detection.A structural dynamic measurement is more often a complex time-varying process and therefore,is prone to dynamic changes in time-frequency contents.To extract the signal components and capture the useful features associated with damage from such nonstationary signals,a technique that combines the time and frequency analysis and shows the signal evolution in both time and frequency is required.Wavelet analyses have proven to be a viable and effective tool in this regard.Wavelet transform(WT)can analyze different signal components and then comparing the characteristics of each signal with a resolution matched to its scale.However,the challenge is the selection of a proper wavelet since various wavelets with varied properties that are to analyze the same data may result in different results.This article presents a study on how to carry out a comparative analysis based on analytic wavelet scalograms,using structural dynamic acceleration responses,to evaluate the effectiveness of various wavelets for damage detection in civil structures.The scalogram’s informative time-frequency regions are examined to analyze the variation of wavelet coefficients and show how the frequency content of a signal changes over time to detect transient events due to damage.Subsequently,damage-induced changes are tracked with time-frequency representations.Towards this aim,energy distribution and sharing information are investigated.The undamaged and damaged simulated comparative results of a structure reveal that the damaged structure were shifted from the undamaged structure.Also,the Bump wavelet shows the best results than the others.Ahmed Silik Mohammad Noori Wael A.Altabey Ramin Ghiasi Zhishen Wu 2021Structural Durability & Health Monitoring2021,15,1:4
4Prediction of blast boulders in open pit mines via multiple regression and artificial neural networks显示文摘The most important objective of blasting in open pit mines is rock fragmentation.Prediction of produced boulders(oversized crushed rocks) is a key parameter in designing blast patterns.In this study,the amount of boulder produced in blasting operations of Golegohar iron ore open pit mine,Iran was predicted via multiple regression method and artificial neural networks.Results of 33 blasts in the mine were collected for modeling.Input variables were:joints spacing,density and uniaxial compressive strength of the intact rock,burden,spacing,stemming,bench height to burden ratio,and specific charge.The dependent variable was ratio of boulder volume to pattern volume.Both techniques were successful in predicting the ratio.In this study,the multiple regression method was superior with coefficient of determination and root mean squared error values of 0.89 and 0.19,respectively.Ghiasi Majid Askarnejad Nematollah Dindarloo Saeid R. Shamsoddini Hamed 2016International Journal of Mining Science and Technology2016,26,2:3
5Design of a Bio-inspired Hull Shape for an AUV from Hydrodynamic Stability Point of View through Experiment and Numerical Analysis显示文摘Amir Honaryar Mahmoud Ghiasi 2018Journal of Bionic Engineering2018,15,6:3
6Potassium phthalimide:An efficient and green organocatalyst for the synthesis of 4-aryl-7-(arylmethylene)-3,4,6,7-tetrahydro-1Hcyclopenta[d]pyrimidin-2(5H)-ones/thiones under solvent-free conditions显示文摘An efficient synthesis of Biginelli-type compounds using potassium phthalimide as a green,mild,and commercially available organocatalyst in a one-pot,multi-component cyclocondensation reaction of cyclopentanone,aldehydes,and urea/thiourea is reported.The present methodology is a green approach to access 4-aryl-7-(aryImethylene)-3,4,6,7-tetrahydro-1H-cyclopenta[d]pyrimidin-2(5H)-ones/thiones.It offers several merits such as simple operational procedures,no use of hazardous organic solvents,and cheap and environmentally friendly solid basic catalyst.Hamzeh Kiyani Maryam Ghiasi 2014Chinese Chemical Letters2014,25,2:3
7Effect of soil cohesion and friction angles on reverse faults显示文摘Severe faults have caused many earthquakes around the world throughout history.More recently,earthquakes have occurred in Taiwan,China(Chi-Chi fault),and elsewhere,causing loss of lives and destroying many buildings and structures.These tectonic movements have gained attention from engineers,and in the past 15 years,the focus has been on faulting mechanisms.In this study,a physical model(1 g)was fabricated and used to evaluate the impact of a reverse fault in a field with a tunnel.In the 1 g model,researchers installed additional gauges on the tunnel,so that all the displacements could be adjusted,and all the responses could be monitored during faulting.An experimental study of various soil properties(cohesion and friction angles)in reverse faults on the tunnel lining were carried out and are described herein.A comparison of results for different levels of soil cohesion revealed that it can dramatically reduce the displacement by as much as 40%,and that friction angles of 27ºcan record approximately 60%more displacements than at 37º.Furthermore,a comparison of fault angles of 30ºand 60ºindicates that the displacements can be different by more than 43%in cohesionless soil and about 64%for a friction angle of 27º.Mehdi Ghafari Haslinda Nahazanan Zainuddin Md Yusoff Vahed Ghiasi 2021Earthquake Engineering and Engineering Vibration2021,20,2:2
8Ship Hull Form Optimization by Evolutionary Algorithm in Order to Diminish the Drag显示文摘这研究为关于总数在平静的水里优化壳形式介绍一个数字方法拖哪个包含一粘滞拖并且一个波浪拖。ITTC 1957 模型轮船关联线被用来预言摩擦拖并且改正的线性化的薄轮船的理论被采用估计波浪拖。是进化算法(EA ) 的一个成员的进化策略(ES ) 家庭由考虑一些设计限制获得一种最佳壳形式。Wigley 壳为二个测试用例和新壳形式在优化过程被看作起始的壳的标准在弗鲁德数字被完成 0.24, 0.316 和 0.408。在 ES 技术是的一种情况中竞选了起始的壳形式,在主要尺寸被修理,唯一的变量是壳偏移量的地方。在除了壳偏移量的另外的盒子中,主要尺寸被看作变量同时被优化。优化过程的数字结果证明优化的壳形式总共产出减小拖。Hassan Zakerdoost Hassan Ghassemi Mahmoud Ghiasi 2013Journal of Marine Science and Application2013,12,2:2
9Detection of West Nile virus genome and specific antibodies in Iranian encephalitis patients显示文摘S. CHINIKAR A. JAVADI B. ATAEI H. SHAKERI M. MORADI E. MOSTAFAVI S. M. GHIASI 2011Epidemiology and Infection2011,,8:1
10Crimean—Congo hemorrhagic fever:a molecular survey on hard ticks(Ixodidae) in Yazd province,Iran显示文摘Objective:To determine the rate of Crimean-Congo hemorrhagic fever virus(CCHFV) infection in hard ticks(Ixodidae) in Yazd province of Iran.Methods:A molecular survey on hard ticks (Ixodidae) was conducted in Yazd province during 2008 -2009.A total of 140 hard ticks(three genera and 7 species) were collected from randomly selected villages and were exanimate for presence of CCHFV reverse transcription-polymerase chain reaction(RT-PCR) method.Results: CCHFV genome was found in 5.71%of hard ticks.All positive ticks were from Hyalomma genus. Positive ticks including:Hyalomma dromedarii,Hyalomma marginatum,Hyalomma anatolicum, Hyalomma detritum,Hyalomma asiaticum.We were not able to find virus in in Rhipicephalus sanguineus and Dermacentor marginatus.Results exhibited that Hyalomma is the main vector in the study area.Conclusions:Due to the presence of virus in 24 provinces’ out of 31,we recommend the use of acaricides and repellent to prevent disease transmission among humans. Greta care should be taken by the people who are working in slaughter houses.Salim Abadi Yaser Chinikar Sadegh Telmadarraiy Zakkyeh Vatandoost Hassan Moradi Maryam Oshaghi Mohammad Ali Ghiasi Seyed Mojtaba 2011Asian Pacific Journal of Tropical Medicine2011,4,1:1
11Expression of seven herpes simplexvirus type 1 glycoproteins (gB, gC, gD, gE, gG, gH, and gl): comparative protection against lethal challenge in mice显示文摘Ghiasi H Kaiwar R Nesburn AB 1994J Virol1994,68,4:1
12Comparison of adjuvant efficacy of her- pes simplex virus type 1 recombinant viruses expressing TH1 and TH2 cytokine genes显示文摘Osorio Y Ghiasi H 2003J Virol2003,77,10:1
13Using Feature Generation from API Calls for Malware Detection 显示文摘SALELU Z SAMI A GHIASI M 2014Computer Fraud & Security2014,2014,9:1
14The motto- and disilanaphthalene: structure, properties, and aromaticity显示文摘Ghiasi R 2005J Mol Struct-Theoehem2005,718,123:1
15A stability-indicating high performance liquid chromatographic assay for the determination of orlistat in capsules显示文摘A. Mohammadi I. Haririan N. Rezanour L. Ghiasi R.B. Walker 2006Journal of Chromatography A2006,,1:1
16Effects of vacuum-compres- sion therapy on healing of diabetic foot ulcers : Randomized con- trolled'trial显示文摘Akbari A Moodi H Ghiasi F 2007J Rehabil Res Dev2007,44,5:1
17Optimal energy aware clustering in sensor networks显示文摘Soheil Ghiasi Ankur Srivastava Yang Xiaojian 2002Sensors2002,2,:1
18Baculovirus-expressed glycoprotein H of herpes simplex virus type 1 (HSV-1) induces neutralizing antibody and delayed type hypersensitivity responses,but does not protect immunized mice against lethal HSV-1 challenge显示文摘Ghiasi H Kaiwar R Nesburn A B 1992Journal of General Virology1992,73,:1
19A comparative study of accumulated total mercury among white muscle, red muscle and liver tissues of common carp and silver carp from the Sanandaj Gheshlagh Reservoir in Iran 显示文摘Khoshnamvand M Kaboodvandpour S Ghiasi F 2013Chemosphere2013,90,3:1
20Structure and conformation of α-, β- and γ-cyclodextrin in solution: Theoretical approaches and experimental validation 显示文摘Tafazzoli M Ghiasi M 2009Carbohydrate Polymers2009,78,1:1
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