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Instruction Cues Increase Brain Network Complexity During Movement Preparation

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Journal of Shanghai Jiaotong university(Science) 2022年第2期27卷 202-210页

作者：王宁张利朋张锐马留洋牛得源张彦昆赵辉胡玉霞 The 27th Research Institute of China Electronics Technology Group Corporation Zhengzhou450047China School of Electrical Engineering Zhengzhou UniversityZhengzhou450001China Henan Key Laboratory of Brain Science and Brain-Computer Interface Technology Zhengzhou450001China Zhengzhou Buen Technology Company Zhengzhou450001China Henan Institute of Metrology Zhengzhou450018China

Instruction cues are widely employed for research on neural mechanisms during movement preparation.However,their influence on brain connectivity during movement has not received much attention.Herein,15 healthy subjects completed two experimental tasks including either instructed or voluntary movements;meanwhile electroencephalogram(EEG)data were synchronously recorded.Based on source analysis and related literature,six movement-related brain regions were selected,including the left/right supplementary motor area(SMA),left/right inferior frontal gyrus(iFg),and left/right postcentral gyrus(pCg).After assuming 10 a priori models of regional brain connectivity,we evaluated the optimal connectivity model between brain regions for the two scenarios using the dynamic causality model(DCM).During voluntary movement,the movement originated in the SMA,passed through the iFg of the prefrontal lobe,and then returned to the main sensory cortex of the pCg.In the instructed movement,the movement originated in the iFg,and then was transmitted to the pCg and the SMA,as well as from the pCg to the SMA.In contrast to the preparation process of voluntary movement,there were long-range information interactions between the iFg and pCg.Further,almost the same brain regions were active during movement preparation under both voluntary and instructed movement tasks,which evidences certain similarities in dynamic brain connectivity,that is,the brain has direct connections between the bilateral SMA,bilateral pCg,and bilateral SMA,indicating that the both brain hemispheres work together during the movement preparation phase.The results suggest that the network during the preparation process of instructed movements is more complex than voluntary movements.

关键词： electroencephalogram(EEG) dynamic causality model(DCM) voluntary movement instructed movement movement preparation

Reactive ion etching of poly(vinylidene fluoride-trifluoroethylene) copolymer for flexible piezoelectric devices

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Chinese Science Bulletin 2013年第18期58卷 2091-2094页

作者： JIANG YongGang SHIONO Syohei HAMADA Hiroyuki FUJITA Takayuki zhang deyuan MAENAKA Kazusuke School of Mechanical Engineering and Automation Beihang University Graduate School of Engineering University of Hyogo Maenaka Human-Sensing Fusion Project ERATOJapan Science and Technology Agency

A microfabrication process for poly(vinylidene fluoride-trifluoroethylene)(P(VDF-TrFE)) based flexible piezoelectric devices is proposed using heat controlled spin coating and reactive ion etching(RIE) techniques.Dry etching of P(VDF-TrFE) in CF 4 +O2 plasma is found to be more effective than that using SF 6 +O2 or Ar+O2 feed gas with the same radiofrequency power and pressure conditions.A maximum etching rate of 400 nm/min is obtained using the CF 4 +O2 plasma with an oxygen concentration of 60% at an antenna power of 200 W and a platen power of 20 W.The oxygen atoms and fluorine atoms are found to be responsible for the chemical etching process.Microstructuring of P(VDF-TrFE) with a feature size of 10 m is achieved and the patterned films show a high remanent polarization of 63.6mC/m 2.

关键词：反应离子蚀刻压电器件三氟乙烯 P(VDF-TrFE) 偏氟乙烯反应性共聚物 SF6气体

A deep seismic sounding profile across the Tianshan Mountains

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Chinese Science Bulletin 2000年第22期45卷 2100-2107页

作者： LU deyuan LI Qiusheng GAO Rui LI Yingkang LI Dexing LIU Wen zhang Zhiying Lithosphere Research Center Chinese Academy of Geological SciencesBeijing 100037China Comprehensive Research Team Chinese Academy of Geological SciencesSanhe 101601China 不详

The deep seismic sounding profile across the Tianshan Mountains revealed a two-layer crustal structure in the Tianshan region, namely the lower and upper crusts. Lateral variations of layer velocity and thickness are evidently shown. Low-velocity layers spread discontinuously at the bottom of the upper crust. The Mono depth is 47 km in the Kuytun area and 50 km in the Xayar area. In the Tianshan Mountains, the Moho becomes deeper with the maximum depth of 62 km around the boundary between the southern and northern Tianshan Mountains. The average velocity ranges from 6.1 to 6.3 km/s in the crust and 8.15 km/s at the top of the upper mantle. Two groups of reliable reflective seismic phases of the Moho (Pm1 and Pm2) are recognized on the shot record section of the Kuytun area. A staked and offset region, 20-30 km long, is displayed within a shot-geophone distance of 190-210 km in Pm1 and Pm2. Calculation shows that the Moho is offset by 10 km in the northern Tianshan region, 62 km deep in the south while

关键词： Tianshan Mountains crust structure deep seismic sounding profile intracontinental subduction.

Photothermal-chemical synthesis of P-S-H ternary hydride at high pressures

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Chinese Physics B 2022年第6期31卷 650-655页

作者：叶婷婷曾鸿程鹏姚德元潘孝美张晓丁俊峰 Key Laboratory of Materials Physics Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

The recent discovery of room temperature superconductivity(283 K)in carbonaceous sulfur hydride(C-S-H)has attracted much interest in ternary hydrogen rich materials.In this report,ternary hydride P-S-H was synthesized through a photothermal-chemical reaction from elemental sulfur(S),phosphorus(P)and molecular hydrogen(H_(2))at high pressures and room temperature.Raman spectroscopy under pressure shows that H_(2)S and PH_(3) compounds are synthesized after laser heating at 0.9 GPa,and a ternary van der Waals compound P-S-H is synthesized with further compression to 4.6 GPa.The P-S-H compound is probably a mixed alloy of PH_(3) and(H_(2)S)_(2)H_(2) with a guest-host structure similar to the C-S-H system.The ternary hydride can persist up to 35.6 GPa at least and shows two phase transitions at approximately 23.6 GPa and 32.8 GPa,respectively.

关键词： hydride superconductor high pressure Raman spectroscopy

OPPORTUNISTIC DECODING OF UNEQUAL ERASURE PROTECTED SCALABLE CODED SOURCE

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Journal of Electronics(China) 2010年第1期27卷 113-117页

作者： Xu Jie zhang Can Gao Shaoshuai Chen deyuan School of Information Science and Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 China State Key Laboratory of Information Security Chinese Academy of Sciences Beijing 100049 China

In this paper,we propose an opportunistic decoding method to enhance the reconstruction of unequal erasure protected scalable coded source.This method explores some non-channel-decodable symbols of the received packets by opportunistically utilizing the structure information of joint source-channel coding scheme.As a result,a longer prefix of source coded stream may be obtained to enhance the reconstruction of scalable coded source.Experiment results indicate that opportunistic decoding at the receiver can improve the quality of the reconstructed source when channel decoding fails to recover all the source symbols.

关键词： Unequal erasure protection Opportunistic decoding Scalable coding

Comparative genomic and transcriptomic analyses uncover the molecular basis of high nitrogen-use efficiency in the wheat cultivar Kenong 9204

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Molecular Plant 2022年第9期15卷 1440-1456页

作者： Xiaoli Shi Fa Cui Xinyin Han Yilin He Long Zhao Na zhang Hao zhang Haidong Zhu Zhexin Liu Bin Ma Shusong Zheng Wei zhang Jiajia Liu Xiaoli Fan Yaoqi Si Shuiquan Tian Jianqing Niu Huilan Wu Xuemei Liu Zhuo Chen deyuan Meng Xiaoyan Wang Liqiang Song Lijing Sun Jie Han Hui Zhao Jun Ji Zhiguo Wang Xiaoyu He Ruilin Li Xuebin Chi Chengzhi Liang Beifang Niu Jun Xiao Junming Li Hong-Qing Ling State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of Shandong College of AgricultureLudong UniversityYantai 264025China Computer Network Information Center Chinese Academy of SciencesBeijing 100190China Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China School of Computer Science and Technology University of Chinese Academy of SciencesBeijing 100049China CAS-JIC Centre of Excellence for Plant and Microbial Science Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Yazhou Bay Seed Laboratory of Hainan Province Sanya 572019China

Studying the regulatory mechanisms that drive nitrogen-use efficiency(NUE)in crops is important for sustainable agriculture and environmental protection.In this study,we generated a high-quality genome assembly for the high-NUE wheat cultivar Kenong 9204 and systematically analyzed genes related to nitrogen uptake and metabolism.By comparative analyses,we found that the high-affinity nitrate transporter gene family had expanded in Triticeae.Further studies showed that subsequent functional differentiation endowed the expanded family members with saline inducibility,providing a genetic basis for improving the adaptability of wheat to nitrogen deficiency in various habitats.To explore the genetic and molecular mechanisms of high NUE,we compared genomic and transcriptomic data from the high-NUE cultivar Kenong 9204(KN9204)and the low-NUE cultivar Jing 411 and quantified their nitrogen accumulation under high-and low-nitrogen conditions.Compared with Jing 411,KN9204 absorbed significantly more nitrogen at the reproductive stage after shooting and accumulated it in the shoots and seeds.Transcriptome data analysis revealed that nitrogen deficiency clearly suppressed the expression of genes related to cell division in the young spike of Jing 411,whereas this suppression of gene expression was much lower in KN9204.In addition,KN9204 maintained relatively high expression of NPF genes for a longer time than Jing 411 during seed maturity.Physiological and transcriptome data revealed that KN9204 was more tolerant of nitrogen deficiency than Jing 411,especially at the reproductive stage.The high NUE of KN9204 is an integrated effect controlled at different levels.Taken together,our data provide new insights into the molecular mechanisms of NUE and important gene resources for improving wheat cultivars with a higher NUE trait.

关键词： wheat genome sequencing spatiotemporal gene expression expansion and differentiation of gene family nitrogen use efficiency Kenong 9204

Quantitative prediction of mining subsidence and its impact on the environment

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International Journal of Mining Science and Technology 2012年第1期22卷 69-73页

作者： Jianjun Song Chunjian Han Ping Li Junwei zhang deyuan Liu Minde Jiang Lin Zheng Jingkai zhang Jianying Song State Key Laboratory of Coal Resources and Safety Mining School of Geosdences and Surveying EngineeringChina University of Mining&TechnologyBeijing 100083China Resources and Environment Investigation Center of Henan Provincial Coalfield Geology Bureau Zhengzhou 450003China Zhengzhou Shuqing Medical College Zhengzhou 430064 China Institute of Foreign Language Huanghe Science and Technology UniversityZhengzhou 450001China

This study is focused on the prediction of mining subsidence and its impact on the environment in the Hongqi mining area. The study was carried out by means of a probability integral model based, in first instance based on field surveys and the analysis of data collected from this area. Isolines of mining subsidence were then drawn and the impact caused by mining subsidence on the environment was analyzed quantitatively by spatial analysis with Geographic Information System (GIS). The results indicate that the subsidence area of the first working-mine can be as large as 2.54 km 2 , the maximum subsidence is 3440 mm which will cause 1524 houses to be relocated. The entire subsidence area of the mine can reach 8.09 km 2 , with a maximum subsidence of 3590 mm. Under these circumstances the value of the loss of ecosystem services will reach 5.371 million Yuan and the cost of relocating buildings will increase to 6.858 million Yuan.

关键词：矿区环境定量预测采煤沉陷矿山塌陷区地理信息系统生态系统服务开采沉陷沉陷预测

A Re-discussion of Imposed Interpretation

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Social Sciences in China 2021年第4期42卷 4-19页

作者： zhang Jiang 黄德远 Center for Literature and Hermeneutics University of the Chinese Academy of Social Sciences 不详

First of all,Chinese hermeneutic construction must achieve new insights and further progress in solving many meta-problems of fundamental significance.The interpretive approach of imposed interpretation has been extremely common in the textual studies and theoretical construction of various disciplines.It is seen in expressing one’s own ideas by means of surreptitious changes to objects and words in the name of the text,imposing these ideas on the text,and then claiming the text expresses just such ideas.Such interpretation violates the logical rules and ethics of hermeneutics,and its legitimacy is thus questionable.Hermeneutics has objects,and the hermeneutic object has certainty.Deviation from the object cancels out the legitimacy of interpretation.Psychologically,imposed interpretation may have a convincing rationale.However,this does not mean it is rational and unassailable,just as the fact that mistakes are hard to avoid does not mean that they are rational and unassailable,let alone truthful.An interpretation with strong theoretical and logical power need not resort to coercion or imposition.Interpretation is the interpretation of motivation.To make a proper and reasonable interpretation,it is fundamental to adhere to the certainty of the hermeneutic object;to insist on a holistic pursuit in the hermeneutic sense;and to constrain the blind unfolding of the motivations of interpretation effectively and rationally.We should be especially alert to the imposed interpretation caused by subjective motives outside the realm of literature.An effective way to rationally constrain the coercive force of interpretation is to always start from the phenomenon itself,insist on a holistic interpretive attitude,and adhere to multiple and multidirectional intersecting circles of interpretation.

关键词： interpretation hermeneutics imposed interpretation psychology

Creep behavior and effect factors of a TiAl–Nb alloy at high temperature

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Progress in Natural Science:Materials International 2021年第3期31卷 477-485页

作者： Shunke zhang Sugui Tian Gengyu Li Ning Tian Fangwei Jin Huichen Yu Xiaoxia Lv Guangyan Wang deyuan Li Shenyang University of Technology Guizhou University of Engineering Science Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Science and Technology on Advanced High Temperature Structural Materials Laboratory AVIC Beijing Institute of Aeronautical Materials

The effect of solution treatment on the microstructure and creep properties of forged TiAl-Nb alloys was investigated.The results showed that the microstructure of forged alloy mainly consisted of γ/αlamellar colonies and fine equiaxed recrystallized γ/αgrains.During the solution treatment the microstructure of the alloy transformed into a fully lamellar structure due to the lamellar colonies growth by consuming equiaxed grains.Compared with the forged alloy the creep life of the solution treated alloy at 800℃/220 MPa increased from 116 h to 339 h.The better creep resistance may be attributed to the transform of fine equiaxed γ/αgrain to the lamellar colonies with serrated grain boundaries due to the solution treatment.The deformation mechanism of the solution treated alloy during creep is considered to be dislocation slipping within the lamellar γ/αphases,and the dislocation movement may be hindered by the γ/αinterface and the formation of dislocation tangles.The interaction of the dislocations with the tangles may increase the resistance of the dislocation motion and hence improve the creep resistance of the alloy.It was found that during the creep of the forged alloys the cracks mainly initiated at the equiaxed grain,and in the solution treated alloy the cracks initiated at the grain boundaries.As creep continued the cracks propagated and connected to each other,leading to the damage and rupture of the forged and solution treated alloys.

关键词： Forged TiAl–Nb alloy Solution treatment Microstructure Creep Deformation and damage