|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 二氧化钛纳米粒子催化合成Hantzsch酯和多氢喹啉衍生物(英文)显示文摘1,4-Dihydropyridine and polyhydroquinoline derivatives have been prepared efficiently in a one-pot synthesis via Hantzsch condensation using nanosized titanium dioxide as a heterogeneous catalyst.The present methodology offers several advantages such as excellent yields,short reaction times (30-120 min),environmentally benign,and mild reaction conditions.The catalyst can be readily separated from the reaction products and recovered in excellent purity for direct reuse. | Mahmood TAJBAKHSH Ehsan ALAEE Heshmatollah ALINEZHAD Mohammad KHANIAN Fatemeh JAHANI Samad KHAKSAR Parizad REZAEE Mahgol TAJBAKHSH | 2012 | 催化学报2012，33，9： | 6 |
| 2 | Supramolecular synthesis of 3,4-dihydropyrimidine-2(1H)-one/thiones under neat conditions显示文摘有效溶剂为各种各样的 3,4-dihydropyrimidin-2 (1H ) 的合成的免费方法在把 sulfonated -cyclodextrine 用作 recyclable 催化剂的优秀收益的 -one/thiones 被描述。Sulfonated -cyclodextrine 被发现有效,异构的催化剂和显示出的率改进,高收益和短反应在这转变预定的 recyclable。 | Sekineh Asghari Mahmood Tajbakhsh Behnam Jafarzadeh Kenari Samad Khaksar | 2011 | Chinese Chemical Letters2011，22，2： | 3 |
| 3 | Effect of a synthesized anionic fluorinated surfactant on wettability alteration for chemical treatment of near-wellbore zone in carbonate gas condensate reservoirs显示文摘The pressure drop during production in the near-wellbore zone of gas condensate reservoirs causes condensate formation in this area.Condensate blockage in this area causes an additional pressure drop that weakens the effective parameters of production,such as permeability.Reservoir rock wettability alteration to gas-wet through chemical treatment is one of the solutions to produce these condensates and eliminate condensate blockage in the area.In this study,an anionic fluorinated surfactant was synthesized and used for chemical treatment and carbonate rock wettability alteration.The synthesized surfactant was characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis.Then,using surface tension tests,its critical micelle concentration(CMC)was determined.Contact angle experiments on chemically treated sections with surfactant solutions and spontaneous imbibition were performed to investigate the wettability alteration.Surfactant adsorption on porous media was calculated using flooding.Finally,the surfactant foamability was investigated using a Ross-Miles foam generator.According to the results,the synthesized surfactant has suitable thermal stability for use in gas condensate reservoirs.A CMC of 3500 ppm was obtained for the surfactant based on the surface tension experiments.Contact angle experiments show the ability of the surfactant to chemical treatment and wettability alteration of carbonate rocks to gas-wet so that at the constant concentration of CMC and at 373 K,the contact angles at treatment times of 30,60,120 and 240 min were obtained 87.94°,93.50°,99.79°and 106.03°,respectively.However,this ability varies at different surfactant concentrations and temperatures.The foamability test also shows the suitable stability of the foam generated by the surfactant,and a foam half-life time of 13 min was obtained for the surfactant at CMC. | Iman Nowrouzi Amir H.Mohammadi Abbas Khaksar Manshad | 2020 | Petroleum Science2020，17，6： | 2 |
| 4 | Spatial variation assessment of groundwater quality using multivariate statistical analysis(Case Study:Fasa Plain,Iran)显示文摘Groundwater is considered as one of the most important sources for water supply in Iran.The Fasa Plain in Fars Province,Southern Iran is one of the major areas of wheat production using groundwater for irrigation.A large population also uses local groundwater for drinking purposes.Therefore,in this study,this plain was selected to assess the spatial variability of groundwater quality and also to identify main parameters affecting the water quality using multivariate statistical techniques such as Cluster Analysis(CA),Discriminant Analysis(DA),and Principal Component Analysis(PCA).Water quality data was monitored at 22 different wells,for five years(2009-2014)with 10 water quality parameters.By using cluster analysis,the sampling wells were grouped into two clusters with distinct water qualities at different locations.The Lasso Discriminant Analysis(LDA)technique was used to assess the spatial variability of water quality.Based on the results,all of the variables except sodium absorption ratio(SAR)are effective in the LDA model with all variables affording 92.80%correct assignation to discriminate between the clusters from the primary 10 variables.Principal component(PC)analysis and factor analysis reduced the complex data matrix into two main components,accounting for more than 95.93%of the total variance.The first PC contained the parameters of TH,Ca2+,and Mg2+.Therefore,the first dominant factor was hardness.In the second PC,Cl-,SAR,and Na+were the dominant parameters,which may indicate salinity.The originally acquired factors illustrate natural(existence of geological formations)and anthropogenic(improper disposal of domestic and agricultural wastes)factors which affect the groundwater quality. | Mehdi Bahrami Elmira Khaksar Elahe Khaksar | 2020 | Journal of Groundwater Science and Engineering2020，8，3： | 2 |
| 5 | A highly efficient procedure for the synthesis of quinoxaline derivatives using polyvinylpolypyrrolidone supported triflic acid catalyst(PVPP.OTf)显示文摘A polyvinylpolypyrrolidone supported triflic acid was shown to be useful as a recyclable heterogeneous catalyst for the rapid and efficient synthesis of quinoxaline derivatives in good-to-excellent yields.The catalyst is easily prepared,air-stable,reusable,and easily removed from the reaction mixtures. | Samad Khaksar Mahmoud Tajbakhsh Milad Gholami Fariba Rostamnezhad | 2014 | Chinese Chemical Letters2014，25，9： | 2 |
| 6 | Oxalic acid as a simple and efficient organocatalyst for three-component synthesis ofα-amino nitriles显示文摘一个简单、有效、一般的方法为氨基的 nitriles 的合成被开发了。象 Br 酸的草酸 ? nsted 酸把 TMSCN 的增加提升到各种各样的 imines (在 situ 产生了) 。 | Seyed Mohammad Vahdat Samad Khaksar Maryam Khavarpour | 2011 | Chinese Chemical Letters2011，22，5： | 2 |
| 7 | Epidemio- logy of cervical cancer and human papillomavirus infection a- mong Iranian women-analyses of national data and systematic review of the literature 显示文摘 | Khorasanizadeh F Hassanloo J Khaksar N | 2013 | Gynecol Oncol2013，128，2： | 1 |
| 8 | 查看详情显示文摘 | Montazeri N Khaksar S Nazari A Alavi S S Vahdat S M Tajbakhsh M | | 0，，： | 1 |
| 9 | A concise and versatile synthesis of 2-ami- no-3-eyanopyridine derivatives in 2,2,2-tfifluoroethanol 显示文摘 | Khaksar S Yaghoobi M | 2012 | Jour- nal of Fluorine Chemistry2012，142，： | 1 |
| 10 | Prediction of asphaltene precipitation in live and tank crude oil using gaussian process regression显示文摘 | Rostami H Khaksar Manshad A | 2013 | Petroleum Science and Technology2013，31，9： | 1 |
| 11 | Empirical relations between rock strength and physical properties in sedimentary rocks显示文摘 | Chang Chandong Zoback M D Khaksar A | 2006 | Journal of Petroleum Science & Engineering2006，51，： | 1 |
| 12 | The effect of cervical traction combined with conventional therapy on grip strength of patients with cervical radiculopathy显示文摘 | Joghataei MT Arab AM Khaksar H | 2004 | Clinical Rehabilitation2004，18，8： | 1 |
| 13 | The relation between after-sales services and entrepreneurial oppor- tunities : Case study of Iran-Khodro Company显示文摘 | KHAKSAR S M S NAWASER K JAHANSHAHI A A | 2011 | African Journal of Business Management2011，5，13： | 1 |
| 14 | 一个简单、环境友好的硅胶固载硫酸催化Biginelli反应体系(英文)显示文摘A protocol for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and-thiones was developed by means of a three-component condensation of an aldehyde,a β-dicarbonyl compound,and urea or thiourea in acetic acid catalyzed by silica-bonded S-sulfonic acid.Compared to the classical Biginelli reaction conditions,this new protocol has the advantages of consistently excellent yields and short reaction times.After the reaction,the catalyst could be recovered easily and reused with little change in its activity. | Mahmood TAJBAKHSH Yousef RANJBAR Abdolhosein MASUODI Samad KHAKSAR | 2012 | 催化学报2012，33，9： | 1 |
| 15 | Empiricalrelations between rock strength and physical propertiesin sedimentary rocks显示文摘 | Chang Chandong Zoback M D Khaksar A | 2006 | Journal of Petroleum Sci-ence&Engineering2006，51，： | 1 |
| 16 | Predicting Partition Coefficients of Migrants in Food Simulant/Polymer Systems Using Adaptive Neuro-fuzzy Inference System显示文摘 | SHAHBAZIKHAH P ASADOLLAHI-BABOLI M KHAKSAR R et al | 2011 | Journal of the Brazilian Chemical Society2011，22，8： | 1 |
| 17 | Determination of migration monomer styrene from GPPS(general purpose polystyrene) and HIPS(high impact polystyrene) cups to hot drinks显示文摘 | Khaksar MR Ghazi-Khansari M | 2009 | Toxicol Mech Methods2009，19，3： | 1 |
| 18 | Epidemiology of cervical cancer and human papilloma virus infection among Iranian women — Analyses of national data and systematic review of the literature显示文摘 | Faezeh Khorasanizadeh Jaleh Hassanloo Nafiseh Khaksar Somayeh Mohammad Taheri Maryam Marzaban Batool H. Rashidi Ali Akbari Sari Kazem Zendehdel | 2012 | Gynecologic Oncology2012，，： | 1 |
| 19 | Empirical rela-tions between rock strength and physical properties in sedi mentary roeks显示文摘 | CHANG C ZOBACK M D KHAKSAR A | 2006 | Journal of Petroleum Science and Engi neering2006，51，3： | 1 |
| 20 | One-step,synthesis of Hantzsch esters and polyhydroquinoline derivatives using new organocatalyst显示文摘Herein we report an efficient organocatalyst for the multicomponent Hantzsch reaction under mild condition.The product easily isolated by simple filtration and catalyst can be recovered. | Seyed Meysam Baghbanian Samad Khaksar Seyed Mohammad Vahdat Maryam Farhang Mahmood Tajbakhsh | 2010 | Chinese Chemical Letters2010，21，5： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员