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72篇 您的检索式:作者名="Subhan"
    题名 作者 年代 出处 被引量
1多级孔分子筛的制备与催化应用显示文摘分子筛研究的热点问题之一是如何减小微孔扩散阻力对传质带来的不利影响,以提高催化剂的利用效率。通过引入介孔,实现多级孔分子筛材料的设计是解决上述问题的一种有效方法。本文介绍了多级孔分子筛材料提高反应扩散效率的理论依据以及国内外多级孔分子筛材料制备方面的研究进展。主要包含'破坏性'方法(destructive methods)和'建设性'方法(constructive methods)的原理,从水热稳定性、酸性、操作性以及可放大性分析了各种合成方法的优势和不足。本文还介绍了多级孔分子筛在催化反应中的若干应用实例,重点介绍了多级孔材料在催化裂化和加氢反应中的应用进展,表明多级孔分子筛可以提高选择性以及转化率。开发适宜酸性以及水热稳定性的微孔-介孔分子筛,同时兼顾低成本、低污染以及易操作性的合成技术是将来研究的重点,同时应建立多级孔分子筛催化性能与结构的关系,加深对多级孔分子筛的认识。彭鹏 张占全 王有和 Fazle Subhan 阎子峰 2013化学进展2013,25,12:26
2Impact of direct acting antivirals on occurrence and recurrence of hepatocellular carcinoma: Biologically plausible or an epiphenomenon?显示文摘Hepatocellular carcinoma(HCC) is a major cause of morbidity and mortality worldwide. Chronic hepatitis C virus infection(HCV) is the most common cause of HCC in many European countries, Japan and Pakistan. Introduction of the new direct acting antivirals(DAAs) has revolutionized the management of HCV worldwide, with high rates of sustained virologic response in patients who could not have tolerated the previous interferon based treatments. However, recently there have been reports raising caution about the long term effects of DAAs, particularly a possible increased risk of HCC. Therefore this review explores the current molecular studies as well as clinical data that investigate the impact of DAAs on occurrence and recurrence of HCC.Amna Subhan Butt Fatima Sharif Shahab Abid 2018World Journal of Hepatology2018,10,2:4
3两段变温法水热合成多级孔ZSM-5分子筛及其催化裂化性能(英文)显示文摘以四丙基氢氧化铵(TPAOH)为单一模板剂,采用低温老化、高温晶化2段变温法合成出了球状多级孔ZSM-5分子筛。利用XRD、FT-IR、NH_3-TPD、SEM、TEM以及氮气吸-脱附等测试对合成样品进行了表征。结果表明:直径约为2μm左右的球状多级孔ZSM-5分子筛颗粒内的晶间介孔和大孔主要由棒状纳米晶堆积而成的,该产品具有较大的比表面积和介孔孔容。同常规水热法一步合成的微孔ZSM-5分子筛相比,2段变温法合成的多级孔ZSM-5分子筛具有更高的B酸/L酸比例(C_(BP)/C_(LP))、强酸/弱酸比例(C_s/C_w)以及活性位可接近性指数(ACI)。催化裂化评价结果显示,得益于活性位可接近性指数等指标的提高,球状多级孔ZSM-5分子筛比常规合成的微孔ZSM-5分子筛具有更高的转化率和丙烯收率等优异的催化性能。王有和 孙洪满 彭鹏 白鹏 阎子峰 Subhan Fazle 季生福 2018无机化学学报2018,34,5:3
4Mycorrhiza and Phosphate Solubilizing Bacteria:Potential Bioagents for Sustainable Phosphorus Management in Agriculture显示文摘Phosphorus(P)is a critical nutrient that plays an essential role in improving soil fertility for optimum plant growth and productivity.It is one of the most deficient macro-nutrients in agricultural soils after nitrogen and is considered inadequate for plant growth and production.To P availability in soils,the farmers are applying huge amounts of synthetic P fertilizers that adversely affect the wider environment,groundwater,soil fertility and microbial population.Many beneficial microbes are known to release and supply soluble P for improving growth and yield of a variety of plants in a sustainable manner in P deficient soils.Thus,inoculation of these microbes,including arbuscular mycorrhizal fungi(AMF)and phosphate solubilizing bacteria(PSB)to soil to enhance crop production without harming the environment,is an alternative approach to chemical fertilizers.The combined role of AMF and PSB in P solubilization is not well understood and the application and mode of action of these microbial groups are often naive due to variation in the environment.Therefore,the current review article would develop a better understanding of the interactive role and mechanisms of AMF and PSB in improving P availability from both organic and inorganic sources in a sustainable crop production system.Finally,the current review would loop out further avenues for researchers interested to commercially produce effective AMF and PSB-based biofertilizers for sustainable management of phosphorus over a wide range of agricultural crops worldwide.Fazli Wahid Muhammad Sharif Shah Fahad Amjad Ali Muhammad Adnan Rafiullah Shah Saud Subhan Danish Muhammad Arif Ali Niaz Ahmed Hüseyin Arslan Doğan Arslan Murat Erman Ayman EL Sabagh Fatemeh Gholizadeh Rahul Datta 2022Phyton-International Journal of Experimental Botany2022,91,2:2
5一种Galileo E5信号双环路捕获跟踪方法显示文摘Galileo导航系统是实现多系统联合定位的优良选择,故对Galileo信号接收的研究具有重要的理论和实际意义。当前Galileo E5信号主要采用二进制偏移载波调制,其信号接收存在精度和效率等多方面的不足。针对Galileo E5信号的特点,提出结合捕获和跟踪的双环路组合跟踪方法。研究使用并行码相位搜索的方法,实现对Galileo E5信号准确捕获,粗略估计出伪随机噪声码相位和载波频率。通过紧密耦合的码跟踪环路和载波跟踪环路,对这2个参数进行精确锁定跟踪。仿真结果显示:跟踪信号在0~1 000 ms内功率谱密度集中在频带之内,包络恒定,相位连续变化,实现了Galileo E5信号的连续稳定跟踪。唐作栋 龚晓峰 Subhan KHAN ZHU Yiqun 2020重庆理工大学学报(自然科学)2020,34,7:2
6Nanograin Mn-Zn ferrite smart cores to miniaturize electronic devices显示文摘Waqas H Qureshi A H Subhan K 2012Ceramics International2012,38,2:1
7Effect of citrus flavonoids, naringin and naringenin, on metabolic syndrome and their mechanisms of action 显示文摘Alam M A Subhan N Rahman M M 2014Adv Nutr2014,5,4:1
8The enhanced adsorption of sul- fur compounds onto mesoporours Ni - A1KIT -6 sorbent, equilib- rium and kinetic analysis 显示文摘Subhan F Yan Z F Pcng P et ai 2014Journal of Hazardous Materials2014,,207:1
9Solution NIR CD and MCD in 4f - 4f transitions of a series of ehiral 3d - 4f dinuclear complexes: X-ray structures of (A-A) - (Ln = Sm,Hoand Er)显示文摘Subhan M A Suzuki T Kaisaki S 2002Dalton Trans2002,1416,:1
10Acidic sites and deep desulfurization perfor- mace of nickel supported mesoporous AIMCM -41 sorbents 显示文摘Subhan F Liu B S 2011Chemical Engineering Journal2011,,178:1
11Fuzzy-Based Sentiment Analysis System for Analyzing Student Feedback and Satisfaction显示文摘The feedback collection and analysis has remained an important subject matter for long.The traditional techniques for student feedback analysis are based on questionnaire-based data collection and analysis.However,the student expresses their feedback opinions on online social media sites,which need to be analyzed.This study aims at the development of fuzzy-based sentiment analysis system for analyzing student feedback and satisfaction by assigning proper sentiment score to opinion words and polarity shifters present in the input reviews.Our technique computes the sentiment score of student feedback reviews and then applies a fuzzy-logic module to analyze and quantify student’s satisfaction at the fine-grained level.The experimental results reveal that the proposed work has outperformed the baseline studies as well as state-of-the-art machine learning classifiers.Yun Wang Fazli Subhan Shahaboddin Shamshirband Muhammad Zubair Asghar Ikram UllahAmmara Habib 2020Computers, Materials & Continua2020,,2:1
12Remarkable chiral and luminescent properties of novel Yb( Ⅲ ) and Eu( Ⅲ) complexes containing BINAPO ligand显示文摘SUBHAN M A HASEGAWA Y SUZUKI T 2009Inorganica Chimica Acta2009,362,1:1
13Synthesis, Structure and Excitation Wavelength Dependent PL Properties of Novel Nanocomposite La2O2CO3·CuO·ZnO显示文摘Subhan M A Ahmed T AwalM R 2014Spectrochim Acta Part A:Mol Biomol Spectrosc2014,132,:1
14A Free Trade,Opportunity or Threat显示文摘SUBHAN M 2005Textile Asia2005,36,7:1
15Diallel analysis for estimating combining ability of quantitatively inherited traits in upland cotton显示文摘Mohammad Subhan M 2003Asian Journal of Plant Sciences2003,2,11:1
16Photoluminescence,photocatalytic and antibacterial activities of Ce O2·Cu O·Zn O nanocomposite fabricated by co-precipitation method显示文摘Md Abdus Subhan Nizam Uddin Prosenjit Sarker 2015Spectrochimica Acta Part A:Molecular and Biomolecular Spectroscopy2015,149,:1
17The enhanced adsorption of sulfur compounds onto mesoporous Ni-A1 KIT-6 sorbent,equilibrium and kinetic analysis显示文摘Subhan F Yan Z F Peng P 2014Journal of Hazardous Materials2014,,270:1
18The Optical and Electrical Properties of Copper Indium Di-selenide Thin Films显示文摘Firoz H S Subhan M A Mannan K M 2000Optical Materials2000,14,:1
19New mechanisms and the anti-inflammatory role of curcumin in obesity and obe- sity-related metabolic diseases显示文摘Shehzad A Ha T Subhan F 2011Eur J Nutr2011,50,3:1
20Residual effects of zopiclone and benzodiazepine hypnotics on psychomotor performance related to car driving显示文摘Harrison C Subhan Z Hindmarch I 1985Drugs Exp Clin Res1985,11,12:1
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