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Strain Hardening of a Layered and Nanostructured AISI 304 Stainless Steel

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Journal of Iron and Steel Research International 2014年第4期21卷 439-443页

作者： Yan-quan JIA yong-li liang Ai-ying CHEN Deng PAN School of Energy and Power Engineering University of Shanghai for Science and Technology Baosteel Technology Centre School of Material Science and Engineering University of Shanghai for Science and Technology

In order to improve the low ductility of nanostructured materials, a layered and nanostructured （LN） 304 SS （stainless steel） is prepared from warm co-rolled 304 SS pre-treated by surface mechanical attrition treatment. The microstructure and mechanical properties, as well as strain hardening, are analyzed in details. The LN steels ex- hibit both high strength and large ductility resulting from good strain hardening behaviors. The strain hardening can be subdivided into two stages, which involves a multiple cracking along interlaminar at the first stage and a strain-in- duced martensite （SIM） transformation at the second stage. The SIM transformation of nanocrystallines and ultrafine grains induces a larger work hardening exponent by the formation of nanoscaled martensite phase. The effect of grain size on the transformation dynamics is discussed.

关键词： austenitic steel nanostructured material martensite transformation work hardening

One-pot synthesis of network supported catalyst using supramolecular gel as template

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Chinese Chemical Letters 2010年第8期21卷 991-994页

作者： yong liang li Ming Tang Yu Xia Kai Chen Bo Tian li Xin Jin Laboratory of Advanced Materials Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

A simple and general strategy is described for preparing network supported catalyst through a one-pot synthetic procedure using supramolecular gel as *** procedure directly attaches ligand to support during fabricating the *** this strategy,supported CuBr/di-（2-picolyl） amine catalyst with U-shaped fibrillar network was prepared and used in atom transfer radical polymerization of methyl *** and SEM characterization of the catalyst revealed homogeneous distribution of ligand,sufficient reactive sites,adequate mechanical strength and *** polymerization results demonstrated high activity and reusability of such *** strategy might be extended to other supported catalysts used in column reactors.

关键词： One-pot synthesis Network supported catalyst Supramolecular gel Atom transfer radical polymerization

XOR spin logic operated by unipolar current based on field-free spin-orbit torque switching induced by a lateral interface

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Rare Metals 2024年第8期43卷 3868-3875页

作者： Yan-Ru li Mei-Yin Yang Guo-Qiang Yu Bao-Shan Cui Jin-Biao liu yong-liang li Qi-Ming Shao Jun Luo Key Laboratory of Microelectronic Devices and Integrated Technology Institute of MicroelectronicsChinese Academy of Sciences(IMECAS)Beijing 100029China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China Institute of Physics Chinese Academy of SciencesBeijing 100190China Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education Lanzhou UniversityLanzhou 730000China Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China

Spin logics have emerged as a promising avenue for the development of logic-in-memory *** particular,the realization of XOR spin logic gates using a single spin-orbit torque device shows great potential for low-power stateful logic circuits in the next *** this study,we successfully obtained the XOR logic gate by utilizing a spin-orbit torque device with a lateral interface,which was created by local ion implantation in the Ta/Pt/Co/Ta Hall device exhibiting perpendicular magnetic *** angle of the lateral interface is set at 45°relative to the current direction,leading to the competition between symmetry breaking and current-driven Néel-type domain wall ***,the field-free magnetic switching reversed is realized by the same sign of current amplitude at this *** on this field-free magnetic switching behavior,we successfully proposed an XOR logic gate that could be implemented using only a single spin-orbit torque Hall *** study provides a potentially viable approach toward efficient spin logics and in-memory computing architectures.

关键词： Filed-free magnetic switching Spin-orbit torque XOR logic gate Lateral interface

Oxidative heat release intensity in coal at low temperatures measured by the hot-wire method

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Mining Science and Technology 2009年第3期19卷 326-330页

作者： YANG yong-liang li Zeng-hua PAN Shang-kun GAO Si-yuan WANG Ya-li School of Safety Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

Directly measuring the oxidative heat release intensity at low temperatures is difficult at *** developed a new method based on heat conduction theory that directly measures heat release intensity of loose coal at low *** this method, we calculated the oxidative heat release intensity of differently sized loose coals by comparing the temperature rise of the coal in nitrogen or an air *** results show that oxidation heat release intensity of Shenhua coal sized 0～15 mm is 0.001～0.03 W/m3 at 30～90 °C and increases with increasing *** heat release intensity at a given temperature is larger for smaller sized *** temperature effect on heat release intensity is muted as the coal size *** lower temperature the change in heat release intensity as a function of size becomes *** results show that the test system is usable for practical applications and is easy to operate and is capable of measuring mass samples.

关键词： coal spontaneous combustion oxidation heat release intensity of coal test system diameter

Microstructural Evolution of Gas Atomized Fe-25Cr-3.2C Alloy Powders

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Journal of Iron and Steel Research International 2011年第2期18卷 75-78页

作者： YANG Min SONG Chang-jiang DAI yong-xiang ZHU liang li Ke-feng ZHAI Qi-jie Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai University Shanghai 200072 China

The microstructural evolution of the gas atomized Fe-25Cr-3.2C powders was investigated by using optical microscope, scanning electron microscope, and X-ray diffraction. The experimental results showed that the atomized Fe-25Cr-3.2C powders were mainly composed of austenite and （Fe,Cr）7 C3 carbide. Eutectic microstructure was developed in the larger particles, whereas dendritic microstrueture was obtained in the particles with diameter less than 38 μm. The reason for microstructure change should be the difference of nucleation undercooling for particles.

关键词： gas atomization Fe-Cr-C alloy microstructure undercooling rapid solidification

Baicalin protects neonatal rat brains against hypoxicischemic injury by upregulating glutamate transporter 1 via the phosphoinositide 3-kinase/protein kinase B signaling pathway

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Neural Regeneration Research 2017年第10期12卷 1625-1631页

作者： Zhi-qing Zhou yong-liang li Zhen-bo Ao Zhi-li Wen Qi-wen Chen Zheng-gang Huang Bing Xiao Xiao-hua Yan Department of Pediatrics the Second People's Hospital of Huaihua CityHuaihuaHunan ProvinceChina Department of Ontology the Second People's Hospital of Huaihua CityHuaihuaHunan ProvinceChina Department of Gastroenterology'the Second Affiliated Hospital of Nanchang University NanchangJiangxi ProvinceChina Department of Pediatrics the First Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina Department of Neurosurgery the Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina

Baicalin is a flavonoid compound extracted from Scutellaria baicalensis *** evidence indicates that baicalin is neuroprotective in models of ischemic ***,we investigate the neuroprotective effect of baicalin in a neonatal rat model of hypoxic-ischemic ***-day-old pups underwent left common carotid artery ligation followed by hypoxia（8% oxygen at 37°C） for 2 hours,before being injected with baicalin（120 mg/kg intraperitoneally） and examined 24 hours *** effectively reduced cerebral infarct volume and neuronal loss,inhibited apoptosis,and upregulated the expression of p-Akt and glutamate transporter *** injection of the phosphoinositide 3-kinase/protein kinase B（PI3 K/Akt） inhibitor LY294002 30 minutes before injury blocked the effect of baicalin on p-Akt and glutamate transporter 1,and weakened the associated neuroprotective *** findings provide the first evidence,to our knowledge that baicalin can protect neonatal rat brains against hypoxic-ischemic injury by upregulating glutamate transporter 1 via the PI3 K/Akt signaling pathway.

关键词： nerve regeneration baicalin hypoxia ischemia PI3K/Akt signaling pathway glutamate transporter 1 excitotoxicity neonatal rats apoptosis neural regeneration

Efficient Task Scheduling for Many Task Computing with Resource Attribute Selection

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China Communications 2014年第12期11卷 125-140页

作者： ZHAO yong CHEN liang li Youfu TIAN Wenhong University of Electronic Science and Technology of China Chengdu 611731 Sichuan Province P. R. China

Many Task Computing(MTC)is a new class of computing paradigm in which the aggregate number of tasks,quantity of computing,and volumes of data may be extremely *** the advent of Cloud computing and big data era,scheduling and executing large-scale computing tasks efficiently and allocating resources to tasks reasonably are becoming a quite challenging *** improve both task execution and resource utilization efficiency,we present a task scheduling algorithm with resource attribute selection,which can select the optimal node to execute a task according to its resource requirements and the fitness between the resource node and the *** results show that there is significant improvement in execution throughput and resource utilization compared with the other three algorithms and four scheduling *** the scheduling algorithm comparison,the throughput is 77%higher than Min-Min algorithm and the resource utilization can reach 91%.In the scheduling framework comparison,the throughput(with work-stealing)is at least 30%higher than the other frameworks and the resource utilization reaches 94%.The scheduling algorithm can make a good model for practical MTC applications.

关键词： task scheduling resource attribute selection many task computing resource utilization work-stealing

Narrowed Si_(0.7)Ge_(0.3)channel FinFET with subthreshold swing of64 mV/Dec using cyclic self-limited oxidation and removal process

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Chinese Physics B 2023年第7期32卷 500-503页

作者：刘昊炎李永亮王文武 Integrated Circuit Advanced Process Center Institute of MicroelectronicsChinese Academy of ScienceBeijing 100029China University of Chinese Academy of Sciences(UCAS) Beijing 100049China

A narrowed Si_(0.7)Ge_(0.3)channel fin field-effect transistor(FinFET)device is demonstrated in detail by using an accuratecyclic wet treatment *** Si_(0.7)Ge_(0.3)fin/per side of 0.63 nm in thickness can be accurately removed in each cycleby utilizing a self-limited oxidation with 40%HNO_(3)solution in 40 s and oxidation removal can be achieved with 1%HFsolution in 10 *** a result,after the dummy gate removal,the fin width of Si_(0.7)Ge_(0.3)can be narrowed from 20 nm to 8 nmby utilizing 10 cycles of this wet treatment *** with the conventional Si_(0.7)Ge_(0.3)FinFET under a similarprocess,the narrowed Si_(0.7)Ge_(0.3)channel FinFET can realize a strong gate control capability by using this newly developedwet treatment process,because its subthreshold slope can be reduced by 24%,improving from 87 mV/dec to 64 mV/dec.

关键词： Si_(0.7)Ge_(0.3) FinFET cyclic wet treatment self-limited oxidation

Advances in Mapping Loci Conferring Resistance to Rice Sheath Blight and Mining Rhizoctonia solani Resistant Resources

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Rice science 2011年第1期18卷 56-66页

作者： ZENG Yu-xiang JI Zhi-juan MA liang-yong li Xi-ming YANG Chang-deng State Key Laboratory of Rice Biology China National Rice Research Institute Hangzhou 310006 China

Sheath blight （SB） caused by Rhizoctonia solani is one of the three major diseases of rice, and now has become the most severe disease causing rice yield loss in China. Breeding and use of varieties resistant to SB is crucial in controlling the disease, but the advances achieved have been limited due to the tack of highly SB-resistant rice germplasm. Genetic analysis revealed that the SB resistance in rice was a typical quantitative trait controlled by multi-genes. Although many QTLs conferring resistance to SB have been identified in recent years, most of the QTLs only showed small effects and few of them have been evaluated for utilization potential. Many R. solani-resistant resources have been found in wild rice species, microorganisms and other plant species. It is already known that the SB-resistance could be improved in transgenic rice plants by genetic transformation. This paper reviewed the genetic mapping of loci associated with resistance to rice SB, the evaluation of the potential of resistance QTLs, and the resistant resources found in various organisms besides rice. To develop SB-resistant rice varieties, it is important to develop and explore new resistant rice germplasms, fine map and evaluate resistance QTLs, and also to pay attention to various bio-resources showing resistance to R. solani.

关键词： rice sheath blight Rhizoctonia solani quantitative trait locus resistance