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[期刊论文] 作者:Arash Shadravan,,
来源:地学前缘 年份:2009
Underbalanced drilling(UBD) is defined as a drilling operation in which circulating drilling fluid pressure is maintained to be lower than reservoir pore pressure.Underbalanced drilling may improve dr...
Managed Pressure Drilling Technology,As the Lost Piece of the Drilling Puzzle,Results in More Econom
[期刊论文] 作者:Arash Shadravan,,
来源:地学前缘 年份:2009
The economics of drilling wells is important as we drill deeper wells whether offshore or onshore. Drilling-related problems,including stuck pipe,lost circulati...
[期刊论文] 作者:Arash Azarfar,
来源:今日畜牧兽医:奶牛 年份:2019
哺乳期犊牛是否需要饲喂粗饲料是困扰行业多年的难题,在首届国际后备牛大会上,来自伊朗Lorestan大学的博导、独立牧场顾问Arash Azarfar从粗饲料的种类、添加水平、饲喂方法...
Investigating Earth Reaction to Pull-Out Process of Frictional Rock Bolts Using Distinct Element Met
[期刊论文] 作者:Arash Refahi,
来源:地质学期刊(英文) 年份:2020
The reaction of earth to pull-out process of frictional rock bolts was here modeled by the distinct element method (DEM). Ten frictional bolts were prepared;the...
An Ultra Low-Voltage and Low-Power OTA Using Bulk-Input Technique and Its Application in Active-RC F
[期刊论文] 作者:Arash Ahmadpour,
来源:电路与系统(英文) 年份:2011
This paper presents the design of a two-stage bulk-input pseudo-differential operational transconductance amplifier (OTA) and its application in active-RC filte...
[期刊论文] 作者:Arash Barjasteh,,
来源:Journal of Earth Science 年份:2018
Accommodation of continental convergence by crustal thickening and lateral transport is mainly featured as strike-slip faulting along the trends roughly orthogonal to the orientation of plate converge...
Managed Pressure Drilling Technology,As the Lost Piece of the Drilling Puzzle,Results in More Econom
[期刊论文] 作者:Arash Shadravan,,
来源:地学前缘 年份:2009
The economics of drilling wells is important as we drill deeper wells whether offshore or onshore. Drilling-related problems,including stuck pipe,lost circulation,and excessive mud cost,show the need...
[会议论文] 作者:Bazhalnezhad Arash,
来源:第三届黄河国际论坛 年份:2007
坝型水库的最佳开发需要短期和长期的逐步规划。一般来讲,坝型水库的开发取决于河流的径流量。在不同的水文与气候条件下,入库的水量也许不同。本研究课题所主要关注的是描述Maroon河水库断面处的实时洪水预警系统。流域模拟系统(WMS)软件被用来筹备一套洪水预......
[学位论文] 作者:Arash Esmaeili,
来源:北京化工大学 年份:2022
在过去几年中,人类大量排放的温室气体已成为全球最严重的环境问题之一。这激发了对二氧化碳捕集技术的深入研究,其中的关键是开发低能耗吸收剂和更前沿的方法。从技术,经济和环境角度考虑,醇胺溶液由于具有突出的性能而被广泛应用于工业过程中CO2的吸收。该方......
Chemoselective Oxidation of Sulfides with Ammonium Nitrate and Silica Sulfuric Acid Catalyzed by KBr
[期刊论文] 作者:Arash GHORBANI-CHOGHAMARAN,Moh,
来源:催化学报 年份:2009
为由 NH4NO3 的处理的脂肪族、芳香的硫化物的 sulfoxidation 的一个方便、选择的催化方法,硅石硫磺的酸的、湿 SiO2 (50% w/w ) 和在在房间温度的 CH2Cl2 的 KBr 的催化数量...
[期刊论文] 作者:Arash Khakzadshahandashti,Moha,
来源:矿物冶金与材料学报:英文版 年份:2019
The weldability of the ZhS6U nickel-based superalloy,which is prone to solidification cracking during electron-beam welding(EBW)repair processes,was investigate...
Chemoselective and Catalytic Trimethylsilylation of Alcohols and Phenols by 1,1,1,3,3,3-Hexamethyldi
[期刊论文] 作者:Arash GHORBANI-CHOGHAMARANI Na,
来源:催化学报 年份:2010
为白酒和酚的 trimethylsilylation 的一个有效过程被介绍。1,1,1,3,3,3-hexamethyldisilazane 的联合和 phenyltrimethylammonium tribromide 的催化数量(PhMe3N+Br3 ?) 被...
One-pot synthesis of 1-amidoalkyl-2-naphthols catalyzed by melamine-Br3 under solvent-free condition
[期刊论文] 作者:Arash Ghorbani-Choghamarani Sh,
来源:催化学报 年份:2014
一个灵巧、有效的方法面对 melamine-Br 3 与芳香的醛和乙酰胺或 thioacetamide 经由 2 萘粉的一个壶多部件冷凝作用为 1-amidoalkyl-2-naphthols 的合成被开发了...
[期刊论文] 作者:Arash GHORBANI-CHOGHAMARANI,Na,
来源:催化学报 年份:2012
An efficient and versatile procedure for the acetylation of alcohols and phenols using acetic anhydride in the presence of a catalytic amount of polyvinylpolypy...
[期刊论文] 作者:Arash Ghorbani-Choghamarani,Za,
来源:催化学报 年份:2017
研究了肽纳米纤维负载的Pd纳米颗粒催化卤代芳烃与羟基苯并三唑的直接偶合反应.结果表明,该偶合反应可在简单、绿色及温和的条件下进行,并可以较高产率生成相应的联芳.本文首...
Protection of Hydroxyl Groups as a Trimethylsilyl Ether by 1,1,1,3,3,3-Hexamethyldisilazane Promoted
[期刊论文] 作者:Arash GHORBANI-CHOGHAMARANI Ma,
来源:催化学报 年份:2011
许多白酒和酚用丁氨二酸酸在温和、异构的条件下面在 acetonitrile 在房间温度作为无毒、没有金属、绿的 organocatalyst 催化的 1,1,1,3,3,3-hexamethyl disilazane 作为 tr...
Chemoselective N-nitrosation of secondary amines under heterogeneous and mild conditions via in situ
[期刊论文] 作者:Arash Ghorbani-Choghamarani,Ha,
来源:中国化学快报:英文版 年份:2009
A wide variety of secondary amines are chemoselectively subjected to N-nitrosation reaction with treatment of citric acid and NaNO_2 in the presence of wet...
[期刊论文] 作者:Arash Ghaani Farashahi,
来源:分析理论与应用:英文刊 年份:2016
This paper introduces a unified operator theory approach to the abstract Fourier analysis over homogeneous spaces of compact groups. Let G be a compact group an...
[期刊论文] 作者:Arash Khalatbari,Portia,
来源:疯狂英语:高中版 年份:2015
听说读写词英式发音适合泛听Track124考场内,踌躇满志的学生在奋笔疾书;考场外,家长焦虑不已。国人熟悉的这一幕在每年六月同样出现在伊朗。原来,伊朗与许多国家一样,高...
[期刊论文] 作者:Arash Ghorbani-Choghamarani,Ja,
来源:中国化学快报:英文版 年份:2010
许多 aldoximes 和 ketoximes 与艾尔(NO3 ) 一起被改革到相应羰基混合物在在在房间温度的 CH2Cl2 的 NaBr 的催化数量的存在的 3 路 9 H2O。...
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