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| 1 | Al-Ti-B-RE细化剂对Al-7.0Si-0.55Mg合金显微组织和力学性能的影响(英文)显示文摘研究添加Al-5Ti-1B-RE细化剂对Al-7.0Si-0.55Mg(A357)合金的显微组织和力学性能的影响。先利用真空熔炼技术制备Al-7.0Si-0.55Mg合金,然后在Al-7.0Si-0.55Mg合金中加入不同成分的Al-5Ti-1B-RE中间合金。通过X射线衍射仪(XRD)、金相显微镜(OM)和扫描电子显微镜(SEM)对显微组织和拉伸试样的断口形貌进行观察。在室温下对合金的力学性能进行测试。观察Al-5Ti-1B-RE细化剂的形态以及内部结构,可以发现以TiB2为异质形核核心的TiAl3/Ti2Al20RE的壳层结构相。在Al-7.0Si-0.55Mg合金中加入Al-5Ti-1B-3.0RE细化剂后,抗拉强度会有明显提升,直到0.2%添加量时,抗拉强度会达到峰值。 | 王雪姣 徐聪 Arfan MUHAMMAD Shuji HANADA Hiroshi YAMAGATA 王文红 马朝利 | 2014 | Transactions of Nonferrous Metals Society of China2014,24,7: | 8 |
| 2 | 基于公式递推法的可变计算位宽的循环冗余校验设计与实现显示文摘循环冗余校验(CRC)与信道编码的级联使用,可以有效改善译码的收敛特性。在新一代无线通信系统,如5G中,码长和码率都具有多样性。为了提高编译码分段长度可变的级联系统的译码效率,该文提出一种可变计算位宽的CRC并行算法。该算法在现有固定位宽并行算法的基础上,合并公式递推法中反馈数据与输入数据的并行计算,实现了一种高并行度的CRC校验架构,并且支持可变位宽的CRC计算。与现有的并行算法相比,合并算法节省了电路资源的开销,在位宽固定时,资源节约效果明显,同时在反馈时延上也有将近50%的优化;在位宽可变时,电路资源的使用情况也有相应的优化。 | 陈容 陈岚 WAHLA Arfan Haider | 2020 | 电子与信息学报2020,42,5: | 7 |
| 3 | Mapping favorable groundwater potential recharge zones using a GIS-based analytical hierarchical process and probability frequency ratio model:A case study from an agro-urban region of Pakistan显示文摘In Punjab(Pakistan),the increasing population and expansion of land use for agriculture have severely exploited the regional groundwater resources.Intensive pumping has resulted in a rapid decline in the level of the water table as well as its quality.Better management practices and artificial recharge are needed for the development of sustainable groundwater resources.This study proposes a methodology to delineate favorable groundwater potential recharge zones(FPRI)by integrating maps of groundwater potential recharge index(PRI)with the DRASTIC-based groundwater vulnerability index(VI).In order to evaluate both indexes,different thematic layers corresponding to each index were overlaid in ArcGIS.In the overlay analysis,the weights(for various thematic layers)and rating values(for sub-classes)were allocated based on a review of published literature.Both were then normalized and modified using the analytical hierarchical process(AHP)and a frequency ratio model respectively.After evaluating PRI and FPRI,these maps were validated using the area under the curve(AUC)method.The PRI map indicates that 53%of the area assessed exists in very low to low recharge zones,22%in moderate,and 25%in high to excellent potential recharge zones.The VI map indicates that 38%of the area assessed exists in very low to low vulnerability,33%in moderate,and 29%in high to very high vulnerability zones.The FPRI map shows that the central region of Punjab is moderately-to-highly favorable for recharge due to its low vulnerability and high recharge potential.During the validation process,it was found that the AUC estimated with modified weights and rating values was 79%and 67%,for PRI and VI indexes,respectively.The AUC was less when evaluated using original weights and rating values taken from published literature.Maps of favorable groundwater potential recharge zones are helpful for planning and implementation of wells and hydraulic structures in this region. | Arfan Arshad Zhijie Zhang Wanchang Zhang Adil Dilawar | 2020 | Geoscience Frontiers2020,11,5: | 3 |
| 4 | A Convenient Synthesis of 6,8-Dimethoxy-3-[(2-(4-methoxyphenyl)ethyl)isocoumarin显示文摘6,8-Dimethoxy-3-[2-(4-methoxyphenyl ) 乙醇] isocoumarin 被 5,7-dimethoxy- hompophthalic 酸的冷凝作用与 3-(4-methoxyphenyl ) 综合 propanoyl 氯化物。综合混合物的结构被它的集体度谱的研究证实。综合混合物为 DL-agrimonolide 的合成担任一个模型。 | AHMAD, H. Badaruddin ARFAN, Muhamma RAMA, N. Hasan MALANA, M. Aslam MAHBOOB, Shahid | 2007 | Chinese Journal of Chemistry2007,25,1: | 2 |
| 5 | Clopidogrel Use Is Associated With an Increased Prevalence of Cerebral Microbleeds in a Stroke‐Free Population: The Rotterdam Study显示文摘 | Sirwan K.L. Darweesh Maarten J.G. Leening Saloua Akoudad Daan W. Loth Albert Hofman M. Arfan Ikram Meike W. Vernooij Bruno H. Stricker | 2013 | Journal of the American Heart Association2013,,5: | 1 |
| 6 | Visuality and geopolitics显示文摘 | Aida Arfan Hozi | 2011 | Political Geography2011,30,3: | 1 |
| 7 | Gas exchange characteristics and water relations in two cultivars of Hibiscus esculentus under waterlogging 显示文摘 | ASHRAF M ARFAN M | 2005 | Biologia Plantarum2005,49,3: | 1 |
| 8 | Gas exchange characteristics and water relations in two cultivars of Hibiscus esculentus under waterlogging显示文摘 | Ashraf M Arfan M | 2005 | Biologia Plantarum2005,49,: | 1 |
| 9 | Gas exchange characteristics and water relations in two cultivars of Hibiscus esculentus under waterlogging 显示文摘 | Ashraf M Arfan M | 2005 | Biologia Plantarum2005,49,: | 1 |
| 10 | In vitro and in vivo acaricidal activity of a herbal extract显示文摘 | Muhammad Arfan Zaman Zafar Iqbal Rao Zahid Abbas Muhammad Nisar Khan Ghulam Muhammad Muhammad Younus Sibtain Ahmed | 2011 | Veterinary Parasitology (-)2011,,3: | 1 |
| 11 | Gas exchange characteristics and water relationsin two cultivars of Hibiscus esculentus under waterlogging 显示文摘 | Ashraf M Arfan M | 2005 | BiologiaPlantarum2005,49,3: | 1 |
| 12 | Kidney function is related to cerehral small vessel disease显示文摘 | Arfan Ikram M Meike W Vernooi J | | 0,,: | 1 |
| 13 | Risk Scores of Common Genetic Variants for Lipid Levels Influence Atherosclerosis and Incident Coronary Heart Disease显示文摘 | Aaron Isaacs Sara M. Willems Daniel Bos Abbas Dehghan Albert Hofman M. Arfan Ikram André G. Uitterlinden Ben A. Oostra Oscar H. Franco Jacqueline C. Witteman Cornelia M. van Duijn | 2013 | Arteriosclerosis, Thrombosis, and Vascular Biology2013,,: | 1 |
| 14 | Efficient combination of recyclable task specific ionic liquid and microwave dielectric heating for the synthesis of lipophilic esters 显示文摘 | Arfan A Bazureau J P | 2005 | Org Process Res Dev2005,9,: | 1 |
| 15 | 血压、动脉僵硬度与认知的关系:基于2个人群(儿童和成人)的队列研究显示文摘成人期高血压水平和较高的动脉僵硬程度与较低的认知能力相关,并随时间累积变化。然而在儿童时期,血管因素可能已经在影响大脑功能。该研究者探索来自R代研究(平均年龄6.2岁)的5853名儿童和来自鹿特丹研究(平均年龄61.8岁)的5187名成年人的认知和血管因素之间的关系。 | Lamballais S Sajjad A Leening MTG Gaillar R Franco OH Mattace-Raso FUS Jaddoe VWV Roza SJ Tiemeier H Arfan MA 刘青 叶鹏 | 2018 | 中华高血压杂志2018,26,12: | 1 |
| 16 | Antioxidant activity of mul-berry fruit extracts显示文摘 | Arfan M Khan R Rybarczyk A | 2012 | Int J Mol Sci2012,13,2: | 1 |
| 17 | Synthesis of new bergenin derivatives as potent inhibitors of inflammatory mediators NO and TNF-α显示文摘 | Muhammad Raza Shah Mohammad Arfan Hazrat Amin | 2012 | Bioorg Med Chem Let2012,22,: | 1 |
| 18 | Cotton germplasm improvement and progress in Pakistan显示文摘Cotton(Gossypium spp.)contributes significantly to the economy of cotton-producing countries.Pakistan is the fourth-largest producer of cotton after China,the USA and India.The average yield of cotton is about 570.99 kg.hm^(−2) in Pakistan.Climate change and different biotic stresses are causing reduction in cotton production.Transgenic approaches have unique advantage to tackle all these problems.However,how to confer permanent resistance in cotton against insects through genetic modification,is still a big challenge to address.Development of transgenic cotton has been proven to be effective.But its effectiveness depends upon several factors,including heterogeneity,seed purity,diffusion of varieties,backcrossing and ethical concerns.Cotton biotechnology was initiated in Pakistan in 1992–1993 with a focus on acquiring cotton leaf curl virus(CLCuV)-resistant insect-resistant,and improving fiber quality.This review summarizes the use of molecular markers,QTLs,GWAS,and gene cloning for cotton germplasm improvement,particularly in Pakistan. | RAZZAQ Abdul ZAFAR Muhammad Mubashar ALI Arfan HAFEEZ Abdul BATOOL Wajeeha SHI Yuzhen GONG Wankui YUAN Youlu | 2021 | Journal of Cotton Research2021,4,1: | 1 |
| 19 | Gas exchange characteristics and waterrelations in two cultivars of Hibisus esulentus underwaterlogging显示文摘 | Ashraf M Arfan M | 2005 | Biologia Plantarum2005,49,3: | 1 |
| 20 | Brain tissue volumes in relation to cognitive function and risk of dementia显示文摘 | M. Arfan Ikram Henri A. Vrooman Meike W. Vernooij Tom den Heijer Albert Hofman Wiro J. Niessen Aad van der Lugt Peter J. Koudstaal Monique M.B. Breteler | 2008 | Neurobiology of Aging2008,,: | 1 |