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Human Primary (SⅠ) and Secondary (SⅡ) Somatosensory Cortices

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Human Primary (SⅠ) and Secondary (SⅡ) Somatosensory Cortic...

中华医学会第十三届全国放射学大会

作者： wang yuan zhang Ming zhang Shi-zheng YU Bo-lang 西安交通大学医学院第一附属医院

目的:To observe regional activation changes of human primary (SⅠ) and secondary (SⅡ) somatosensory cortices induced by electrical stimulation of different intensity in fMRI and discuss the effect of these areas in p...

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葡聚糖的光致发光性质及机理研究

高分子学报 2022年第8期53卷 906-912页

作者：张永芝王倩赵子豪袁华谭业强袁望章青岛大学材料科学与工程学院生物多糖纤维成形与生态纺织国家重点实验室青岛266071 上海交通大学化学化工学院变革性分子前沿科学中心上海200240

天然产物具有良好的生物相容性和环境友好性,研究此类非典型发光化合物对发光机理的理解以及绿色环保型发光材料的开发具有重要意义.基于此,本文研究了天然产物葡聚糖的光致发光性质与发光机理.结果表明,葡聚糖发光具有浓度增强、激发... 详细信息

天然产物具有良好的生物相容性和环境友好性,研究此类非典型发光化合物对发光机理的理解以及绿色环保型发光材料的开发具有重要意义.基于此,本文研究了天然产物葡聚糖的光致发光性质与发光机理.结果表明,葡聚糖发光具有浓度增强、激发波长依赖性、分子量依赖性及聚集诱导发光等特性,其浓溶液在低温下表现出明显的激发波长依赖性的余辉,并且高分子量葡聚糖粉末还具有超长寿命室温磷光(p-RTP)发射.这些现象可用簇聚诱导发光(CTE)机理进行合理解释.随着葡聚糖浓度的增加或形成聚集体,氧原子簇聚形成不同的离域扩展的氧簇,其在O···O相互作用、氢键、分子链缠结等协同作用下构象刚硬化,因此能够受激发射.经压片后,葡聚糖片呈现更明显的长余辉,这是由于压片后分子堆积更为紧密,分子间相互作用增强,从而减少了分子运动引起的非辐射跃迁及空气中氧气和水分子对三线态激子的猝灭.

关键词：葡聚糖光致发光磷光簇聚诱导发光

Wafer‑Scale Ag_(2)S‑Based Memristive Crossbar Arrays with Ultra‑Low Switching‑Energies Reaching Biological Synapses

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Nano-Micro Letters 2025年第3期17卷 328-339页

作者： yuan Zhu Tomas Nyberg Leif Nyholm Daniel Primetzhofer Xun Shi Zhen zhang Division of Solid‑State Electronics Department of Electrical EngineeringUppsala University75121 UppsalaSweden Department of Chemistry Uppsala UniversityUppsalaSweden Department of Physics and Astronomy Uppsala UniversityUppsalaSweden State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China

Memristive crossbar arrays(MCAs)offer parallel data storage and processing for energy-efficient neuromorphic ***,most wafer-scale MCAs that are compatible with complementary metal-oxide-semiconductor(CMOS)technology still suffer from substantially larger energy consumption than biological synapses,due to the slow kinetics of forming conductive paths inside the memristive *** we report wafer-scale Ag_(2)S-based MCAs realized using CMOS-compatible processes at temperatures below 160℃.Ag_(2)S electrolytes supply highly mobile Ag+ions,and provide the Ag/Ag_(2)S interface with low silver nucleation barrier to form silver filaments at low energy *** further enhancing Ag+migration in Ag_(2)S electrolytes via microstructure modulation,the integrated memristors exhibit a record low threshold of approximately−0.1 V,and demonstrate ultra-low switching-energies reaching femtojoule values as observed in biological *** low-temperature process also enables MCA integration on polyimide substrates for applications in flexible ***,the intrinsic nonidealities of the memristive units for deep learning can be compensated by employing an advanced training *** impressive accuracy of 92.6%in image recognition simulations is demonstrated with the MCAs after the *** demonstrated MCAs provide a promising device option for neuromorphic computing with ultra-high energy-efficiency.

关键词： Wafer-scale Ag_(2)S films Reactive sputter Silver nucleation Ag^(+)migration Energy-efficient neuromorphic computing

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横向三维化学反应流动数值模拟

计算力学学报 2007年第4期24卷 414-419页

作者：薛社生李守先王元璋北京应用物理与计算数学研究所北京100088

对一个三维化学反应流程序作了改进,使之适应于模拟带横向碘蒸汽注入的COIL(化学氧碘激光)喷管流动。其中,主副气流的入流边界条件的改进是基本的,重要的。这里,入流边界附近的气体流动被视为一维均熵流动,用双曲方程的特征理论,分析以... 详细信息

对一个三维化学反应流程序作了改进,使之适应于模拟带横向碘蒸汽注入的COIL(化学氧碘激光)喷管流动。其中,主副气流的入流边界条件的改进是基本的,重要的。这里,入流边界附近的气体流动被视为一维均熵流动,用双曲方程的特征理论,分析以流量作变量的EULER方程的特征关系,用特征方法数值求解简化的特征方程,从而确定亚声速(跨声速)流动边界点的入流密度或速度。对相关文献提供的算例的计算,佐证了程序改进的有效性。对氮气作载气的条件也作了模拟,得出了与氦气条件不同的流动特征与增益分布特征。

关键词：化学氧碘激光特征理论亚声速跨声速超声速数值模拟

The affect and importance of the Lichens in the Arid zone conservation and protection of water resource

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新疆大学学报（自然科学版） 2004年第Z1期21卷 16-19页

作者： wang Yu-liang zhang yuan-ming Adil Abdulla Anwar Tumur Abdulla Abbas Biology Department of Anhui Technical Teachers College Anhui Fengyang 233100 Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 College of the Life Science and Technology Xinjiang UniversityUrumqi830046 Biology Department of Anhui Technical Teachers CollegeAnhui Fengyang 233100 College of the Life Science and Technology Xinjiang UniversityUrumqi830046

Desertification has already become the global social problem. On the Arid zone it has closer relation with the frail ecotope. The system of the arid zone mountain belongs to crisscross between the farming ,forestry and husbandry . The frailty of the ecosystem manifests on the internal frailty, depends on the plant ,intensity of the contradictory between the landscape transitional and natural reservation area,physical weathering strong,the development of the soil surface is slowly but the erode of the rain ,soil erosion very grave. Lichens not only rein force the intensity and depth of the weathering of rocks and formation ,accelerate of the mineral weathering making and accumulating the organic compound, at the same time lichens have strongly water protection abilities and inestimable role in the prevent soil erosion. In this paper we were according to on-the-spot investigation and analysis of the laboratory from 1985 to now on the middle and west of the Mt . Tianshan and Mt. Altay kanas where mainly probe into the significance of the protection water and conservation water resources of the Arid zone. This research works will be provide scientific basis and reference of the government for put into effect ,improving environment of the mountain region ,major construction oasis ecotope and make great efforts for protection desert ecotope.

关键词： Lichens Water resource Mountain ecosystem

Study of Insula involving in pain modulation with fMRI

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Study of Insula involving in pain modulation with fMRI

中华医学会第十三届全国放射学大会

作者： wang yuan zhang Ming zhang Shi-zheng YU Bo-lang LIU Hai 西安交通大学医学院第一附属医院

目的:To observe regional changes of insula lobe activation induced by electrical stimulation of different intensity in fMRI and discuss the effect of this area in pain modulation network．

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Cerebellum involving in pain modulation-an functional magnet

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Cerebellum involving in pain modulation-an functional magnet

中华医学会第十三届全国放射学大会

作者： wang yuan zhang Ming zhang Shi-zheng YU Bo-lang LIU Hai 西安交通大学医学院第一附属医院

目的:To observe activation of cerebellar subregions induced by electrical stimulation in fMRI and discuss the effect of there areas in pain modularion．方法:Ten healthy right—handed volunteers

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fMRI study on ACC activation induced by electrical

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fMRI study on ACC activation induced by electrical

中华医学会第十三届全国放射学大会

作者： wang yuan zhang Ming zhang Shi-zheng YU Bo-lang LIU Hai 西安交通大学医学院第一附属医院

目的:To investigate the functional activation patterns of the subregions of anterior cingulate cortex(ACC)in human to electrical stimulation of different intensity with functional Magnetic Resonance Imaging and probe ...

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近程防御武器系统精度分配算法研究

计算机仿真 2018年第5期35卷 64-67页

作者：王丽张原西北工业大学电子信息学院陕西西安710129

近程反导武器系统精度指标分配是系统设计过程中的一个重要环节,为避免在武器系统设计中造成设备性能(或造价)的浪费,有必要对各组成分系统的精度做出最佳的要求和分配。对于复杂的、非线性的近程防御武器系统精度分配问题,提出了基于... 详细信息

近程反导武器系统精度指标分配是系统设计过程中的一个重要环节,为避免在武器系统设计中造成设备性能(或造价)的浪费,有必要对各组成分系统的精度做出最佳的要求和分配。对于复杂的、非线性的近程防御武器系统精度分配问题,提出了基于粒子群算法的一种新的混合算法。首先对标准粒子群算法速度更新公式进行修改,避免微粒群陷入局部最优;然后引入差分算法的变异操作,再与鲍威尔算法相结合,以改进的混合粒子群算法为系统精度分配的启发式搜索策略实现精度分配。最后用一个实例进行仿真分析,仿真结果表明改进算法具有更好的稳定性和鲁棒性,是求解近程防御武器系统精度分配方案的一种有效算法。

关键词：精度分配粒子群优化变异策略鲍威尔算法近程防御武器系统