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Experimental flexural behavior of SMA-FRP reinforced concrete beam

Frontiers of Structural and Civil Engineering 2013年第4期7卷 341-355页

作者： adeel zafar Bassem ANDRAWES Department of Civil Engineering University of Illinois at Urbana-ChampaignIllinois 61820USA

The most critical drawback in currently used steel reinforcement in reinforced concrete(RC)structures is susceptibility to accumulation of plastic deformation under excessive *** concrete structures due to damaged(yielded)steel reinforcement have undergone costly repairs and *** research presents a new type of shape memory alloy(SMA)-based composite reinforcement with ability to withstand high elongation while exhibiting pseudoelastic *** this study,small diameter SMA wires are embedded in thermoset resin matrix with or without additional glass fibers to develop composite *** technique of new proposed composite is validated using microscopy *** proposed SMA-FRP composite square rebars are first fabricated and then embedded in small scale concrete T-beam.3-point bending test is conducted on manufactured RC beam using a cyclic displacement controlled regime until *** is found that the SMA-FRP composite reinforcement is able to enhance the performance of concrete member by providing re-centering and crack closing capability.

关键词： re-centering shape memory alloys concrete composite fiber reinforced polymer scanning electron microscopy

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Nitrite sensor using activated biochar synthesised by microwave-assisted

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Waste Disposal and Sustainable Energy 2023年第1期5卷 1-11页

作者： Scarlett Allende Yang Liu Muhammad adeel zafar Mohan V.Jacob Electronics Material Lab College of Science and EngineeringJames Cook UniversityTownsvilleQLD4811Australia College of Science and Engineering James Cook UniversityTownsvilleQLD4811Australia

Developing applications for the by-products obtained from waste processing is vital for resource *** synthesis of ZnCl2-activated biochar with high electrocatalytic activity was carried out by the microwave-assisted pyrolysis of pineapple peel and subsequent chemical activation *** biochar is employed in the electrochemical sensing of nitrite by drop casting in a glassy carbon electrode(GCE).The activated biochar exhibited a stacked carbon sheet,254 m2 g−1 Brunauer,Emmett and Teller(BET)surface area,0.076 cm3 g−1 pore volume,189.53 m2 g−1 micropore area and oxygen-containing functional *** electrochemical impedance spectroscopy of the modified GCE showed a reduced charge transfer resistance of 61%.This is crucial to determine the electrochemical properties of *** sensor showed a significant current response and an excellent limit of detection of 0.97µmol L−*** modified-activated biochar electrochemical sensor demonstrated high selectivity,reproducibility(RSD=2.4%),and stability(RSD=2.6%).

关键词： Microwave-assisted pyrolysis Biochar Nitrite Electrochemical sensor

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Mechanisms and molecular approaches for heat tolerance in rice (Oryza sativa L.) under climate change scenario

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Journal of Integrative Agriculture 2018年第4期17卷 726-738页

作者： Syed adeel zafar Amjad Hameed Muhammad Amjad Nawaz MA Wei Mehmood All Noor Muzammil Hussain Mehboob-ur-Rahman National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China Nuclear Institute for Agriculture and Biology (NIAB) Faisalabad 38000 Pakistan Department of Biotechnology College of Engineering Science Chonnam National University Chonnam 59626 Republic of Korea Institute of Crop Sciences Chinese Academy of Agricultural Sciences~Key Laboratory of Crop Physiology and Ecology Ministryof Agriculture Beijing 100081 P.R.China State Key Laboratory of Mycology/Institute of Microbiology Chinese Academy of Sciences Beijing 100101 P.R. China Plant Genomics & Molecular Breeding Laboratories National Institute for Biotechnology and Genetic Engineering (NIBGE)Faisalabad 38000 Pakistan

Rice, a staple cereal crop in many parts of the world, has been confronted with multiple environmental stresses including high temperature, negatively impacts the booting as well as anthesis growth stages. The situation is further complicated by the changing climatic conditions, resulting in gradual escalation of temperature as well as changing the rainfall pattern and frequency, thus raising a concern of food security worldwide. The situation can be combat by developing rice varieties with excellent genetics with improved morpho-physiological, biochemical, and molecular mechanisms, together can minimize the adverse effects of heat stress. Here, several strategies(encompassing genetic and genomic, and mechanisms involved) for mitigating the impact of high temperature on rice have been discussed. Finally, the utilization of genomic knowledge in augmenting the conventional breeding approaches have been comprehensively elaborated to develop heat tolerant germplasm.

关键词： heat stress rice climate change molecular markers heat stress responses

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DEGENERATED PANICLE AND PARTIAL STERILITY 1(DPS1) encodes a CBS domain containing protein required for anther cuticle and panicle development in rice

DEGENERATED PANICLE AND PARTIAL STERILITY 1(DPS1) encodes a ...

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中国生物工程学会第十三届学术年会暨2019年全国生物技术大会

作者： Syed adeel zafar Suyash B.Patil Muhammad Uzair Jingjing Fang Jinfeng Zhao Tingting Guo Shoujiang Yuan Muhammad Uzair Qian Luo Jianxin Shi Lukas Schreiber Xueyong Li National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop Science Chinese Academy of Agricultural Sciences Shandong RiceResearch Institute Joint International Research Laboratory of Metabolic and Developmental Sciences School of Life Sciences and Biotechnology Shanghai Jiao TongUniversity Institute of Cellular and Molecular Botany University of Bonn

Degeneration of apical spikelets and reduced panicle fertility are common reasons for low seed-setting rate in rice. However, little is known about the underlying molecular *** we report a novel degenerated panicle and partial sterility 1(dps1) mutant that showed panicle apical degeneration and reduced fertility in middle spikelets. dps1 plants were characterized by small whitish anthers with altered cuticle morphology and absence of pollen grains. Amounts of cuticular wax and cutin were significantly reduced in dps1 anthers. Panicles of dps1 plants showed an accumulation of reactive oxygen species(ROS), lower antioxidant activity and increased programmed cell death. Map-based cloning revealed that DPS1 encodes a mitochondrial-localized protein containing a cystathionine β-synthase(CBS) domain which showed the highest expression in panicles and anthers. DPS1 physically interacted with mitochondrial thioredoxin proteins Trx1 and Trx20 and it participated in ROS scavenging. Global gene expression analysis in dps1 revealed that biological processes related to fatty acid metabolism and ROS homeostasis were significantly affected and the expression of key genes involved in wax and cutin biosynthesis were *** results suggest that DPS1 plays a vital role in regulating ROS homeostasis, anther cuticle formation and panicle development in rice.

关键词： anther cuticle CBS domain Oryza sativa panicle apical degeneration reactive oxygen species seed setting rate

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