维普中文期刊产品整合服务
238篇 您的检索式:作者名="Shahbaz"
    题名 作者 年代 出处 被引量
1Climate change impacts on crop yield,crop water productivity and food security-A review显示文摘这篇论文用产量建模的气候,水和庄稼在庄稼生产率上提供与对气候变化影响的评价有关的文学的全面评论。那个气候变化与更高空间的分辨率建模的在场的存在研究能为未来气候设计向前是一个方法。同时,超过一个气候模型的随机的设计为提供卓见进模型不确定性是必要的以及冒管理策略的风险发展。水可获得性将在世界的一些部分增加,这被投射,它将在水使用效率和水分配上有它的自己的效果。如果灌溉区域被扩展或灌溉被加强,庄稼生产能增加,但是这些可以增加环境降级的率。因而,自从土壤水上的变化影响平衡的气候,将导致土壤蒸发和植物蒸发的变化庄稼生长时期可以在影响水生产率的未来弄短。气候变化影响的庄稼收益被投射在各种各样的区域不同,在庄稼收益将增加的一些区域,并且为另外的区域,它将减少取决于区域和灌溉申请的纬度。存在建模结果证明降水的增加将增加庄稼产量,并且而且,收割产量比温度对降水更敏感。如果水可获得性以后被减少,当维持庄稼产量时,保持能力的高水位线的土壤将更好减少干旱的影响。与增加的温度和降水变化,水可获得性和庄稼生产是可能的以后减少。如果灌溉区域被扩展,全部的庄稼生产将增加;然而,食物和环境质量可以降级。Yinhong Kang Shahbaz Khan Xiaoyi Ma 2009Progress in Natural Science:Materials International2009,19,12:45
2甘蓝型油菜光合机构对干旱的生理响应显示文摘为探讨油菜光合机构对干旱胁迫的响应,研究了2个抗旱性不同的油菜(Brassica napus L.)品种在干旱胁迫下农艺性状、气体交换参数、叶绿素荧光参数、叶绿体超微结构及Rubisco活性等指标的变化。结果表明,干旱胁迫下,相对增长率、总干重、叶面积和叶片相对含水量降低,而根冠比增加;净光合速率、蒸腾速率、气孔导度和胞间CO2浓度降低,而气孔限制值增加;PSⅡ最大光能转换效率、PSⅡ实际光能转换效率、光化学淬灭和电子传递效率降低,而非光化学淬灭系数增加;两品种的叶绿体超微结构遭到不同程度破坏;且叶绿素含量和Rubisco活性降低,脯氨酸和可溶性糖的含量增加。敏感型品种秦优8号光合机构遭受干旱的破坏程度明显大于抗旱型品种Q2。代碌碌 Muhammad Shahbaz Naeem 张春雷 刘哲辉 陈畅 胡超 赵运成 张利艳 刘丽欣 李俊 马霓 2016中国油料作物学报2016,38,6:6
3Intraspecific Variations of Phosphorus Absorption and Remobilization, P Forms, and Their Internal Buffering in Brassica Cultivars Exposed to a P-Stressed Environment显示文摘Translocation of absorbed phosphorus (P) from metabolically inactive sites to active sites in plants growing under P deprivation may increase its P utilization efficiency (PUE). Acclimation to phosphate (Pi) starvation may be caused by a differential storage pool of vacuolar P, its release, and the intensity of re-translocation of absorbed P as P starvation inducible environmental cues (PSIEC) from ambient environment. Biomass assay and three P forms, namely inorganic (Pi), organic (Po), and acid-soluble total (Ptas) were estimated in Brassica cultivars exposed to 10 d P deprivation in the culture media. Considering that -δPi/δt denotes the rate of Pi release, Pi release velocity (RSPi) was determined as the tangent to the equations obtained for Pi f(t) at the mean point in the period of greatest Pi decrease, whereas the inverse of the RSPi was an estimate of the internal Pi buffering capacity (IBCPi). Inter cultivar variations in size of the non-metabolic Pi pool, RSPi, re-translocation of Pi from less to more active metabolic sites, and preferential Pi source and sink compartments were evaluated under P starvation. The cultivar ‘Brown Raya’ showed the highest Pi storage ability under adequate external P supply, and a more intensive release than ‘Rain Bow’ and ‘Dunkled’ under P stress. Cultivar ‘B.S.A’ was inferior to ‘Con-1’ in its ability to store and use Pi. Roots and upper leaves were the main sink of Pi stored in the lower and middle leaves of all cultivars and showed lower IBCPi and larger RSPi values than lower and middle leaves. In another trial, six cultivars were exposed to P-free nutrition for 29 d after initial feeding on optimum nutrition for 15 d. With variable magnitude, all of the cultivars re-translocated P from the above ground parts to their roots under P starvation, and [P] at 44 d after transplanting was higher in developing leaves compared with developed leaves. Under P deprivation, translocation of absorbed P from metabolically inactive to active sites may have helped the tolerant cultivars to establish a better rooting system, which provided a basis for tolerance against P starvation and increased PUE. A better understanding of the extent to which changes in the flux of P absorption and re-translocation under PSIEC will help to scavenge Pi from bound P reserves and will bring more sparingly soluble P into cropping systems and obtain capitalization of P reserves.M. Shahbaz Akhtar Yoko Oki Tadashi Adachi 2008Journal of Integrative Plant Biology2008,50,6:4
4MgO(001) barrier based magnetic tunnel junctions and their device applications显示文摘Spintronics has received a great attention and significant interest within the past decades,and provided considerable and remarked applications in industry and electronic information etc.In spintronics,the MgO based magnetic tunnel junction(MTJ) is an important research advancement because of its physical properties and excellent performance,such as the high TMR ratio in MgO based MTJs.We present an overview of more than a decade development in MgO based MTJs.The review contains three main sections.(1) Research of several types of MgO based MTJs,including single-crystal MgO barrier based-MTJs,double barrier MTJs,MgO based MTJs with interlayer,novel electrode material MTJs based on MgO,novel barrier based MTJs,novel barrier MTJs based on MgO,and perpendicular MTJs.(2) Some typical physical effects in MgO based MTJs,which include six observed physical effects in MgO based MTJs,namely spin transfer torque(STT) effect,Coulomb blockade magnetoresistance(CBMR) effect,oscillatory magnetoresistance,quantum-well resonance tunneling effect,electric field assisted magnetization switching effect,and spincaloric effect.(3) In the last section,a brief introduction of some important device applications of MgO based MTJs,such as GMR & TMR read heads and magneto-sensitive sensors,both field and current switching MRAM,spin nano oscillators,and spin logic devices,have been provided.HAN XiuFeng ALI Syed Shahbaz LIANG ShiHeng 2013Science China(Physics,Mechanics & Astronomy)2013,56,1:4
5Information fusion in aquaculture:a state-of the art review显示文摘Efficient fish feeding is currently one of biggest challenges in aquaculture to enhance the production of fish quality and quantity. In this review, an information fusion approach was used to integrate multisensor and computer vision techniques to make fish feeding more efficient and accurate. Information fusion is a well-known technology that has been used in different fields of artificial intelligence, robotics, image processing,computer vision, sensors and wireless sensor networks.Information fusion in aquaculture is a growing field of research that is used to enhance the performance of an'industrialized' ecosystem. This review study surveys different fish feeding systems using multi-sensor data fusion, computer vision technology, and different food intake models. In addition, different fish behavior monitoring techniques are discussed, and the parameters of water, p H, dissolved oxygen, turbidity, temperature etc.,necessary for the fish feeding process, are examined.Moreover, the different waste management and fish disease diagnosis techniques using different technologies,expert systems and modeling are also reviewed.Shahbaz Gul HASSAN Murtaza HASAN Daoliang LI 2016Frontiers of Agricultural Science and Engineering2016,3,3:3
6社会和环境因素对二语学习动机的影响——巴基斯坦大学生视角(英文)显示文摘近年来,二语习得和二语学习动机研究虽然受到了研究者和教师的广泛关注,但是在此方面还有很多问题有待研究,特别是对巴基斯坦的此项研究很少。在影响二语习得动机的不同影响因素中,本研究关注的是不同大学(公立和私立)和不同学科专业(文科和理科)对动机的影响。本研究收集了547份大学一年级学生问卷对不同具体情境因素对英语作为二语学习动机的影响进行研究。研究结果显示私立大学学生比公立大学学生学习动机强且成绩更好。公立大学学生有强烈的工具性动机而私立大学学生偏向于二语理想自我倾向。在学科专业方面,学生二语学习动机没有明显差异,但是在两组学生的成绩上差异明显。文科生学习动机取决于他们对英语的态度,而理科生工具性英语学习动机显著。本文还讨论了产生这些动机差异的原因和对英语教师和学习者的启示。Muhammad SHAHBAZ 刘永兵 2015Chinese Journal of Applied Linguistics2015,38,4:3
7播期和密度对棉花叶柄和根系硝态氮含量的影响显示文摘为探讨大田棉花氮代谢随播期和密度的变化规律,选用华棉3109(G.hirsutum L.)于2014年在华中农业大学试验农场,采用裂区设计:播期(月-日)(S1,05-30;S2,06-14)为主区,密度(株·m-2)(D1,7.5;D2,9.0;D3,10.5)为副区,研究了硝态氮含量在主茎叶柄和根系的分布特点。结果表明:1)随生育进程推进,叶柄和根系硝态氮含量先升高后降低,初花期最高。2)主茎叶柄硝态氮含量随叶位变化,蕾期、初花期由上而下逐渐降低,第1叶最高;盛花期逐渐增高,第1叶和第4叶最高;不同生育时期棉花叶柄硝态氮含量在叶位间的下降幅度随播期推迟而降低,随密度增加先升高后降低。3)播期和密度对不同生育时期棉花叶柄和根系硝态氮平均含量的交互作用均显著,但播期和密度主效应影响不同:见花施肥前,随推迟播期,棉花叶柄硝态氮平均含量显著降低了42.9%,根系硝态氮平均含量显著升高了12.1%,增加密度对叶柄和根系硝态氮平均含量无显著影响。见花施肥后,随播期的推迟,叶柄硝态氮平均含量无显著性变化,初花期平均为5.05 mg·g-1,盛花期平均为2.62 mg·g-1;而根系硝态氮平均含量,初花期S1>S2,盛花期S1王雷山 Khan Aziz 袁源 武莹莹 Adnan Noor Shah Shahbaz Tung 杨国正 2016棉花学报2016,28,6:3
8Sedative, 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
9Mobilization and Acquisition of Sparingly Soluble P-Sources by Brassica Cultivars under P-Starved Environment I. Differential Growth Response,P-Efficiency Characteristics and P-Remobilization显示文摘Phosphorus (P) starvation is highly notorious for limiting plant growth around the globe. To combat P-starvation,plants constantly sense the changes in their environment,and elicit an elegant myriad of plastic responses and rescue strategies to enhance P-solublization and acquisition from bound soil P-forms. Relative growth responses,P-solublization and P-acquisition ability of 14 diverse Brassica cultivars grown with sparingly soluble P-sources (Rock-P (RP) and Ca3(PO4)2 (TCP)) were evaluated in a solution culture experiment. Cultivars showed considerable genetic diversity in terms of biomass accumulation,concentration and contents of P and Ca in shoots and roots,P-stress factor (PSF) and P use efficiency. Cultivars showed variable P-stress tolerance,and cultivars depicting low PSF and high P-efficiency values were better adaptable to P-starvation. In experiment 2,after initial feeding on optimum nutrition for 12 d after transplanting (DAT),class-I (low P-tolerant (Oscar and Con-II)) and class-II (low P-sensitive (Gold Rush and RL-18)) cultivars were exposed to P-free environment for 25 d. All of the cultivars remobilized P from above ground parts to their roots during growth in P-free environment,the magnitude of which was variable in tested cultivars. P-concentrations ([P]s) at 37 DAT were higher in developing compared with developed leaves. Translocation of absorbed P from metabolically inactive to active sites in P-stressed plants may have helped class-I cultivars to establish a better rooting system,which provided a basis for enhanced P-utilization efficiency (PUE) and tolerance against P-stress. By supplying TCP and RP spatially separated from other nutrients in split root study,class-I cultivars were still able to mobilize RP and TCP more efficiently compared with class-II cultivars. To compare the growth behavior under P-stress,cultivars were grown in pots for 41 d after sowing,using a soil low in P (NaHCO3-extractable P = 3.97 mg/kg,Mehlich-III-extractable P = 6.13 mg/kg) with (+P = 60 mg P/kg soil) or without P addition (0P) in study 4. Tested cultivars showed genetic diversity in PUE,P-efficiency (PE),P-efficiency ratio (PER) and PSF. P-stress markedly reduced biomass and plant P contents. Cultivars that produced higher root biomass accumulated higher total P-contents (r = 0.98??),which in turn was related negatively to PSF (r = ?0.95??) and positively to shoot and total biomass. PER and PE showed significant correlations with shoot P-contents and biomass. Cultivars depicting high PUE and PE,and low PSF values showed better growth behavior under low soil P-environment. Systematic analysis and deployment of the plant rescue traits underlying the nutrient acquisition,assimilation,utilization and remobilization under P-starvation will bring more sparingly soluble P into cropping systems and will help to scavenge more P from plant unavailable bound P reserves.Muhammad Shahbaz Akhtar Yoko Oki Tadashi Adachi 2009Journal of Integrative Plant Biology2009,51,11:2
10Mobilization and Acquisition of Sparingly Soluble P-Sources by Brassica Cultivars under P-Starved Environment II. Rhizospheric pH changes,Redesigned Root Architecture and Pi-Uptake Kinetics显示文摘Non-mycorrhizal Brassica does not produce specialized root structures such as cluster or dauciform roots but is an effective user of P compared with other crops. In addition to P-uptake,utilization and remobilization activity,acquisition of orthophosphate (Pi) from extracellular sparingly P-sources or unavailable bound P-forms can be enhanced by biochemical rescue mechanisms such copious H+-efflux and/or carboxylates exudation into rhizosphere by roots via plasmalemma H+ ATPase and anion channels triggered by P-starvation. To visualize the dissolution of sparingly soluble Ca-phosphate (Ca-P),newly formed Ca-P was suspended in agar containing other essential nutrients. With NH4+ applied as the N source,the precipitate dissolved in the root vicinity can be ascribed to rhizosphere acidification,whereas no dissolution occurred with nitrate nutrition. To observe in situ rhizospheric pH changes,images were recorded after embedding the roots in agar containing bromocresol purple as a pH indicator. P-tolerant cultivar showed a greater decrease in pH than the sensitive cultivar in the culture media (the appearance of typical patterns of various colors of pH indicator in the root vicinity),and at stress P-level this acidification was more prominent. In experiment 2,low P-tolerant class-I cultivars (Oscar and Con-II) showed a greater decrease in solution media pH than low P-sensitive class-II (Gold Rush and RL-18) cultivars,and P-contents of the cultivars was inversely related to decrease in culture media pH. To elucidate P-stress-induced remodeling and redesigning in a root architectural system,cultivars were grown in rhizoboxes in experiment 3. The elongation rates of primary roots increased as P-supply increased,but the elongation rates of the branched zones of primary roots decreased. The length of the lateral roots and topological index values increased when cultivars were exposed to a P-stress environment. To elucidate Pi-uptake kinetics,parameters related to P influx:maximal transport rate (Vmax),the Michaelis-Menten constant (Km),and the external concentration when net uptake is zero (Cmin) were tested in experiment 4. Lower Km and Cmin values were better indicative of the P-uptake ability of the class-I cultivars,evidencing their adaptability to P-starved environmental cues. In experiment 5,class-I cultivars exuded two-to threefold more carboxylates than class-II cultivars under the P-stress environment. The amount and types of carboxylates exuded from the roots of P-starved plants differed from those of plants grown under P-sufficient conditions. Nevertheless,the exudation rate of both class-I and class-II cultivars decreased with time,and the highest exudation rate was found after the first 4 h of carboxylates collection. Higher P uptake by class-I cultivars was significantly related to the drop in root medium pH,which can be ascribed to H+-efflux from the roots supplied with sparingly soluble rock-P and Ca3(PO4)2. These classical rescue strategies provided the basis of P-solubilization and acquisition from sparingly soluble P-sources by Brassica cultivars to thrive in a typically stressful environment.Muhammad Shahbaz Akhtar Yoko Oki Tadashi Adachi 2009Journal of Integrative Plant Biology2009,51,11:2
11Blockchain technology applications for Industry 4.0:A literature-based review显示文摘Industry 4.0 involves innovations with upcoming digital technologies,and blockchain is one of them.Blockchain can be incorporated to improve security,privacy,and data transparency both for small and large enterprises.Industry 4.0 is a synthesis of the new production methods that allow manufacturers to achieve their target more rapidly.Research has been conducted on various Industry 4.0 technologies like Artificial Intelligence(AI),Internet of Things(IoT),Big data,and Blockchain,and how they could create significant interruptions in recent years.These technologies provide various possibilities in the world of manufacturing and supply chain.Blockchain is a technology that has gained much recognition and can enhance the manufacturing and supply chain environment.Various fields now have fascinating insights into the advantages of blockchain.Several research articles on“Blockchain”and“Industry 4.0”from Google Scholar,Scopus,and other relevant sources are identified and reviewed for this study.This paper discusses the major potential of Blockchain in Industry 4.0.Various drivers,enablers,and associated capabilities of Blockchain technology for Industry 4.0 are discussed for insights.Different Industry 4.0 spheres/sub-domains for Blockchain technology realisation are also discussed.Finally,we have identified and studied fourteen significant applications of Blockchain in Industry 4.0.It is a range of new developments and hope for immense opportunities that are changing Industry 4.0.This technology would work to achieve amplified outcomes and work individually to enhance the process.Mohd Javaid Abid Haleem Ravi Pratap Singh Shahbaz Khan Rajiv Suman 2021Blockchain(Research and Applications)2021,2,4:2
12Traceability implementation in food supply chain: A grey-DEMATEL approach显示文摘Numerous incidents of food adulteration,fraudulence and foodborne disease outbreaks have shaken the consumer confidence towards the food they consume.These incidents compel the Food Supply Chain(FSC)partners to implement an appropriate traceability system in their respective supply chains to sustain the consumer confidence.The objective of this research is to identify the drivers(major factors)which play a significant role in the successful implementation of the traceability system in FSC and evaluate the causal relationships developing therein.Twelve drivers are identified towards implementation of the traceability system in FSC through literature review and supported with expert’s opinion.The grey-based DEMATEL approach is identified to evaluate these relationships among the drivers according to their net effect.Further,these drivers ranked based on the prominence and effect score.The finding of this research shows that the drivers are clustered into two groups namely:influential(cause)and influenced(effect)group.Four drivers belong to the influential group,and remaining eight are from the influenced group.The most influential driver is the “food safety and quality”which provide a significant effect on the implementation of a traceability system.This research can be a building block to develop a framework to implement the traceability system within FSC and assist the policymakers,and practitioners to identify and evaluate drivers related to the implementation of traceability system in FSC.This paper also provides a useful insight&support to the practitioners and managers in decision making for traceability implementation related issues。Abid Haleem Shahbaz Khan Mohd Imran Khan 2019Information Processing in Agriculture2019,6,3:2
13Does financial development increase energy consumption? The role of industrialization and urbani- zation in Tunisia显示文摘Shahbaz M Lean H H 2012Energy Policy2012,,40:1
14The dynamic links between energy consumption,economic growth,financial development and trade in China:Fresh evidence from multivariate framework analysis显示文摘Shahbaz M Khan S Tahir M I 2013Energy Economics2013,,40:1
15Economic growth, energy consumption, financial development, interna- tional trade and CO2 emissions in Indonesia 显示文摘Shahbaz M Hye Q M A Tiwari A K Leito N C 2013Renewable and Sustainable Energy Reviews2013,,25:1
16The dynamic links between energy consumption, economic growth, financial development and trade in China: Fresh evidence from multivariate frame- work analysis 显示文摘Shahbaz M Khan S Tahir M I 2013Energy Economics2013,,40:1
17Using deep eutectic solvents for the removal of glycerol from palm oil - based biodiesel 显示文摘SHAHBAZ K MJALLI F S HASHIM M A 2010J Appl Sci2010,10,24:1
18Does financial develop- ment increase energy consumption?The role of industrialization and urbanization in Tunisia显示文摘Muhammad Shahbaz Hooi Hooi Lean 2012Energy Policy2012,,40:1
19Real Exchange Rate Behavior and Economic Performance in LDCs显示文摘Cottani Joaquin A Cavallo Domingo F Khan Shahbaz M 1990Economic Development and Cultural Change1990,39,1:1
20Human progesteronereceptor A form is a cell-andpromoter-specificrepressor of humanprogesterone receptor B function显示文摘Vegeto E Shahbaz MM Wen DX 1993Mol Endocrinol1993,11,7:1
返回顶部 每页显示:
共12页 首页 上一页 第1页 下一页 末页 /12 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费