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347篇 您的检索式:作者名="Arain"
    题名 作者 年代 出处 被引量
1PVA纤维表面改性对水泥基复合材料弯曲性能的影响显示文摘采用有机硅柔软剂对国产聚乙烯醇(PVA)纤维进行表面改性,并制备了纤维增强水泥基复合材料(PVA-ECC)。采用扫描电子显微镜研究了有机硅柔软剂改性对PVA纤维表面结构的影响,用三点弯曲试验研究了有机硅柔软剂改性的PVA纤维对PVA-ECC复合材料弯曲性能的影响。研究结果表明:随着有机硅柔软剂含量的增加,PVA-ECC的极限弯曲强度和极限跨中挠度均先增加再减小,当有机硅柔软剂质量分数为7%时,极限弯曲强度和极限跨中挠度达到最大值,分别为5.627 MPa和2.123 mm;用ASTM C1609标准分析PVA-ECC三点弯曲韧性,当有机硅柔软剂质量分数为7%时,弯曲韧性达到最大值。王明学 Muhammad Fahad Arain 张华鹏 郭玉海 2019合成纤维2019,48,1:6
2钙钛矿太阳电池溶剂工程的动力学阐述(英文)显示文摘光伏领域的研究者们在不断探索可以用于高效太阳能转换的新材料.研究每种新型光伏材料的主要目的是通过简单的制造工艺和较低的生产成本来实现更高的能量产出.新兴的钙钛矿材料也在竞争行列之中.通过不同的化学计量调控和工艺改进,钙钛矿太阳电池在过去的几年中实现了最高的光电转换效率,这一技术已经成为未来能量转换材料的有力候选者.到目前为止,许多研究表明活性层的薄膜质量在很大程度上决定了钙钛矿太阳电池的光电性能.当前和潜在的用于制备良好活性层形貌的溶剂工程技术大体上是使用主要溶剂、共溶剂(路易斯酸-碱加合方法)和溶剂添加剂来实现.在这篇综述中,我们详细讨论了多种已报道的溶剂工程动力学对钙钛矿太阳电池活性层形态特征的影响.目的是通过不同的结晶过程得到一个关于溶剂工程如何诱导钙钛矿太阳电池活性层形貌的清晰的认知.最后,我们基于不同溶剂的配位性质绘制了一个基本框架,便于筛选可用来制备钙钛矿前驱体的有效溶剂,以获得性能更好和可行性更高的光伏器件.Zulqarnain Arain 刘成 杨熠 M.Mateen 任英科 丁勇 刘雪朋 Zulfiqar Ali Manoj Kumar 戴松元 2019Science China Materials2019,62,2:4
3Reversible and irreversible adsorption of bare and hybrid silica nanoparticles onto carbonate surface at reservoir condition显示文摘Realistic implementation of nanofluids in subsurface projects including carbon geosequestration and enhanced oil recovery requires full understanding of nanoparticles(NPs)adsorption behaviour in the porous media.The physicochemical interactions between NPs and between the NP and the porous media grain surface control the adsorption behavior of NPs.This study investigates the reversible and irreversible adsorption of silica NPs onto oil-wet and water-wet carbonate surfaces at reservoir conditions.Each carbonate sample was treated with different concentrations of silica nanofluid to investigate NP adsorption in terms of nanoparticles initial size and hydrophobicity at different temperatures,and pressures.Aggregation behaviour and the reversibility of NP adsorption onto carbonate surfaces was measured using dynamic light scattering(DLS),scanning electron microscope(SEM)images,energy dispersive X-ray spectroscope(EDS),and atomic force microscope(AFM)measurement.Results show that the initial hydrophilicity of the NP and the carbonate rock surface can influence the NPs adsorption onto the rock surfaces.Typically,oppositely charged NP and rock surface are attracted to each other,forming a mono or multilayers of NPs on the rock.Operation conditions including pressure and temperature have shown minor influence on nano-treatment efficiency.Moreover,DLS measurement proved the impact of hydrophilicity on the stability and adsorption trend of NPs.This was also confirmed by SEM images.Further,AFM results indicated that a wide-ranging adsorption scenario of NPs on the carbonate surface exists.Similar results were obtained from the EDS measurements.This study thus gives the first insight into NPs adsorption onto carbonate surfaces at reservoirs conditions.Zain-UL-Abedin Arain Sarmad Al-Anssari Muhammad Ali Shoaib Memon Masood Ahmed Bhatti Christopher Lagat Mohammad Sarmadivaleh 2020Petroleum2020,6,3:2
4Sedative, Amnestic, and Analgesic Properties of Small-Dose Dexmedetomidine Infusions显示文摘Judith E. Hall Toni D. Uhrich Jill A. Barney Shahbaz R. Arain Thomas J. Ebert 2000Anesthesia & Analgesia2000,,3:2
5Hollow fiber-based liquid phase microextraction followed by analytical instrumental techniques for quantitative analysis of heavy metal ions and pharmaceuticals显示文摘Hollow-fiber liquid-phase microextraction(HF-LPME)and electromembrane extraction(EME)are miniaturized extraction techniques,and have been coupled with various analytical instruments for trace analysis of heavy metals,drugs and other organic compounds,in recent years.HF-LPME and EME provide high selectivity,efficient sample cleanup and enrichment,and reduce the consumption of organic sol-vents to a few micro-liters per sample.HF-LPME and EME are compatible with different analytical in-struments for chromatography,electrophoresis,atomic spectroscopy,mass spectrometry,and electrochemical detection.HF-LPME and EME have gained significant popularity during the recent years.This review focuses on hollow fiber based techniques(especially HF-LPME and EME)of heavy metals and pharmaceuticals(published 2017 to May 2019),and their combinations with atomic spectroscopy,UV-VIS spectrophotometry,high performance liquid chromatography,gas chromatography,capillary elec-trophoresis,and voltammetry.Wajid Ali Khan Muhammad Balal Arain Yadollah Yamini Nasrullah Shah Tasneem Gul Kazi Stig Pedersen-Bjergaard Mohammad Tajik 2020Journal of Pharmaceutical Analysis2020,10,2:2
6部分预成核以制备单相基于FA0.92MA0.08PbI3的高效太阳电池(英文)显示文摘目前为止,对于高性能钙钛矿太阳能电池(PSCs)的开发已经进行了大量的研究,并取得了显著的成果.基于FAxMA1-xPbI3的混合阳离子钙钛矿具有广泛的吸光范围和显著的热稳定性,是获得高性能器件的理想材料.然而,很难通过前驱体来控制钙钛矿膜中混合阳离子的比例.此外,高MA+含量的FAxMA1-xPbI3薄膜存在严重的相分离和大量的陷阱态,导致光伏性能较差.为了抑制相分离,本文提出了一种退火前部分成核的后处理方法,用混合的甲酰胺碘/甲铵碘(FAI/MAI)溶液处理制备的FAI-Pb I-2-DMSO中间相,最终得到的钙钛矿为FA0.92MA0.08PbI3.发现由于类似的分子结构引发了钙钛矿后处理薄膜中的离子交换,从而促进了部分成核,缺陷大大减少.因此,增加的光捕获和减少的缺陷态有助于提高开路电压和短路电流.用后处理方法制备的PSCs在大气条件下,最大PCE为20.80%, 80天后降解率为30%,具有可靠的重现性.石鹏举 丁勇 刘成 杨熠 Zulqarnain Arain 蔡墨朗 任英科 Tasawar Hayat Ahmed Alsaedi 戴松元 2019Science China Materials2019,62,12:2
7Radial variations in xylem sap flux in a temperate red pine plantation forest显示文摘Background:Scaling sap flux measurements to whole-tree water use or stand-level transpiration is often done using measurements conducted at a single point in the sapwood of the tree and has the potential to cause significant errors.Previous studies have shown that much of this uncertainty is related to(i)measurement of sapwood area and(ii)variations in sap flow at different depths within the tree sapwood.Results:This study measured sap flux density at three depth intervals in the sapwood of 88-year-old red pine(Pinus resinosa)trees to more accurately estimate water-use at the tree-and stand-level in a plantation forest near Lake Erie in Southern Ontario,Canada.Results showed that most of the water transport(65%)occurred in the outermost sapwood,while only 26%and 9%of water was transported in the middle and innermost depths of sapwood,respectively.Conclusions:These results suggest that failing to consider radial variations in sap flux density within trees can lead to an overestimation of transpiration by as much as 81%,which may cause large uncertainties in water budgets at the ecosystem and catchment scale.This study will help to improve our understanding of water use dynamics and reduce uncertainties in sap flow measurements in the temperate pine forest ecosystems in the Great Lakes region and help in protecting these forests in the face of climate change.Alanna V.Bodo M.Altaf Arain 2021Ecological Processes2021,10,1:2
8Allometry and partitioning of above-and belowground tree biomass in an age-sequence of white pine forests 显示文摘PEICHL M ARAIN M A 2007Forest Ecology and Management2007,253,:1
9Variability of duration of action of neuromuscular-blocking drugs in elderly patients显示文摘Arain SR Kern S Ficke DJ 0,,03:1
10Vasodilation from sufentanil in humans显示文摘Ebert TJ Ficke DJ Arain SR 0,,6:1
11The efficacy ofdexmedetomidine versus morphine for postoperative analgesiaafter major inpatient surgery 显示文摘Arain SR Ruehlow RM Uhrich TD 2004Anesth Analg2004,98,:1
12Speciation of heavy metals in sediment by conventional,ultrasound and microwave assisted singleextraction methods: A comparison with modified sequential extraction procedure显示文摘ARAIN M B KAZI T G JAMALI M K 2008J Hazard Mater2008,154,3:1
13Resting functional MRI with temporal clustering analysis for localization of epileptic activity without EEG显示文摘 Price RR Arain A 2004Neuroimage2004,21,1:1
14Application of factorial design in optimization of ultrasonic - assisted extraction of aluminum in juices and soft drinks 显示文摘Nusrat Jalbani Tasnecm G Kazi Bilal M Arain M K Jamali Hassan I Afridi R A Sarfraz 2006Talanta2006,,70:1
15Assessment of water quality of polluted lake using multivariate statistical techniques:A case study显示文摘Kazi T G Arain M B Jamali M K 2009Ecotoxicology and Environmental Safety2009,72,2:1
16A Contribution to the problem of trihalomethane formation from the Arabian gulf water 显示文摘Eldin A M S Arain R A Hammoud A A 1991Desalination1991,85,1:1
17Recommendations for the Management of Hepatitis C Virus Infection Among People Who Inject Drugs显示文摘Geert Robaeys Jason Grebely Stefan Mauss Philip Bruggmann Joseph Moussalli Andrea De Gottardi Tracy Swan Amber Arain Achim Kautz Heino St?ver Heiner Wedemeyer Martin Schaefer Lynn Taylor Markus Backmund Olav Dalgard Maria Prins Gregory J. Dore 2013Clinical Infectious Diseases . 2013 (supp)2013,,:1
18Vasodilation from sufentanil in humans显示文摘Ebert T J Ficke D J Arain S R 2005Anesthesia&Analgesia2005,101,6:1
19Oxidative stability assessment of Bauhinia purpurea seed oil in comparison to two conventional vegetable oils by differential scanning calorimetry and Rancimat methods 显示文摘Arain S Sherazi S T H Bhanger M I 2009Thermochimica Acta2009,484,1:1
20Assessment of water quality of polluted lake using multivariate statistical techniques: A case study 显示文摘Kazi T G Arain M B Jamali M K 2009Ecotoxicology and Environmental Safety2009,72,2:1
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