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Nano Research 2024年第4期17卷 2960-2970页

作者： yajie han Shujie Jiao Jiangcheng Jing Lei Chen Ping Rong Shuai Ren Dongbo Wang Shiyong Gao Jinzhong Wang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Self-powered full-spectrum photodetectors(PDs)offer numerous advantages,such as broad application fields,high precision,efficiency,and multi-functionality,which represent a highly promising and potentially valuable class of detectors for future ***,insensitive response to solar-blind ultraviolet(UV)and complex and expensive preparation processes greatly limit their performance and practical *** this study,a self-powered full-spectrum Bi_(2)Se_(3)/a-Ga_(2)O_(3)/p-Si heterojunction PD with high sensitivity for solar-blind UV band prepared by a simple and low-cost two-step synthesis method is *** results reveal that the developed PD has an excellent performance,such as high sensitivity from 200 to 850 nm,and a responsivity of 1.38 mA/W as well as a detectivity of 3.22×10^(10) Jones under 254 nm light at zero ***,the unencapsulated device displays exceptional stability and imaging *** is expected that Bi_(2)Se_(3)/a-Ga_(2)O_(3)/p-Si heterojunction PD with a simple and low-cost synthesis method has great potential for self-powered full-spectrum photodetectors.

关键词： Bi_(2)Se_(3)/a-Ga_(2)O_(3)/p-Si self-powered photodetector full spectral photoresponse imaging

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4G网络共享频带组网方法

长江信息通信 2024年第7期37卷 201-204页

作者：韩亚洁中兴通讯股份有限公司陕西西安710000

无线移动通信网络频谱资源是宝贵的,尤其随着无线通信技术的发展,有限网络频谱的高效利用成为无线通信的一个重要问题。目前商用的无线网络支持的制式有多种,包括GSM、CDMA、UMTS、LTE以及NR等。虽然先进的LTE和NR无线网络部署应用在建... 详细信息

无线移动通信网络频谱资源是宝贵的,尤其随着无线通信技术的发展,有限网络频谱的高效利用成为无线通信的一个重要问题。目前商用的无线网络支持的制式有多种,包括GSM、CDMA、UMTS、LTE以及NR等。虽然先进的LTE和NR无线网络部署应用在建设和推进,但被全球广泛应用的其他网络制式在短时间内仍不会被淘汰。鉴于此,文章以4G LTE网络为背景,提出4G网络和其他制式异频网络的共享频带组网应用方法。其核心思想是:根据两种网络共享频谱占用的情况,采用带宽压缩或者载波聚合技术,最大化提升无线频谱利用率,同时做到异频带网络间的干扰最小化。

关键词：共享频带 4G

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格式塔理论在高中语文散文教学中的应用

科教导刊 2024年第16期 122-124页

作者：韩亚杰吉林师范大学吉林四平136000

《普通高中语文课程标准(2017版)》明确提出了语文课程的基本理念是以核心素养为本,然而在传统高中语文散文教学中,教师更侧重于客观知识与答题技巧的讲授而很难贯彻这一理念。文章以格式塔理论为切入点,分析当前高中语文散文教学中存... 详细信息

《普通高中语文课程标准(2017版)》明确提出了语文课程的基本理念是以核心素养为本,然而在传统高中语文散文教学中,教师更侧重于客观知识与答题技巧的讲授而很难贯彻这一理念。文章以格式塔理论为切入点,分析当前高中语文散文教学中存在的问题以及“格式塔”理论在高中语文散文教学中的价值,最后将其整体性理论、完型压强理论以及异质同构理论与高中语文散文教学相结合,以提升学生的语文核心素养。

关键词：格式塔理论高中语文散文阅读教学

不同运动方式干预对昼夜节律紊乱小鼠认知功能的影响——基于肠道菌群和非靶向代谢组学分析

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上海体育大学学报 2024年第3期48卷 49-64页

作者：丁博张爱新韩雅洁王茂叶山东师范大学体育学院山东济南250358

目的研究不同运动方式干预对昼夜节律紊乱小鼠认知功能的影响,探讨肠道菌群及代谢与认知功能之间的相关性。方法采用轮回颠倒的光照周期暴露建立昼夜节律紊乱模型,将模型小鼠分为:安静组(DC)、中等强度持续训练(MICT)运动组(DM)和高强... 详细信息

目的研究不同运动方式干预对昼夜节律紊乱小鼠认知功能的影响,探讨肠道菌群及代谢与认知功能之间的相关性。方法采用轮回颠倒的光照周期暴露建立昼夜节律紊乱模型,将模型小鼠分为:安静组(DC)、中等强度持续训练(MICT)运动组(DM)和高强度间歇训练(HIIT)运动组(DH),另设对照组(CC),各组15只,经过6周运动干预后,运用HE染色观察结肠组织、Morris水迷宫检测认知功能、16S rRNA高通量测序检测肠道菌群以及LC-MS检测粪便代谢物。结果①DM组和DH组的腺体破坏程度有所减轻。②DM组和DH组平台潜伏期和初次抵达平台时间显著缩短,游泳距离减少,穿越站台次数和目标象限游泳时间百分比均显著增加。③DC组丰度较高的菌群为柔膜菌门和柔膜菌纲,DM组为瘤胃球菌科,DH组为Lutispora等。④DM组中肌酸、丁酸和甲硫氨酸等代谢物水平显著高于DC组,DH组中花生四烯酸等代谢物水平显著高于DC组。⑤肠道菌群中颤螺菌属、乳酸杆菌属与认知功能相关性显著,代谢物中姜黄素和油酸与认知功能相关性显著。结论MICT和HIIT可调节昼夜节律紊乱小鼠肠道菌群的结构和丰度,改善其认知功能,相关肠道菌群与代谢物参与运动改善昼夜节律紊乱小鼠认知功能的调节。

关键词：高强度间歇训练昼夜节律紊乱认知功能肠道菌群代谢组学

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Plasma transport simulation under different conditions and optimization analysis of dual-stage grid ion thruster

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Chinese Journal of Aeronautics 2023年第7期36卷 388-399页

作者： yajie han Guangqing XIA Bin SUN Chang LU Junjun ZhanG Vladimir A.SAETCHNIKOV State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentDalian University of TechnologyDalian 116024China Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province Dalian University of TechnologyDalian 116024China Collaborative Innovation Center of Micro&Nano Satellites of Hebei Province North China Institute of Aerospace EngineeringLangfang 065000China Physics and Aerospace Technology Department Belarusian State UniversityMinsk 220030Belarus

In order to study the extraction and acceleration mechanism of the dual-stage grid,a three-dimensional model based on the Particle-In-Cell/Monte Carlo Collision(PIC/MCC)method is ***-stage grid ion thruster is a new type of electrostatic ion thruster,which can break through the limitations of traditional gridded ion thrusters,and greatly improve the specific *** high performance also makes the grid sensitive to operating *** this paper,the influence of grid parameters on xenon ion thruster’s performance in a wide range is systematically simulated,and the optimal operating condition is *** the over-focusing of the plume,and the transparency of the screen grid are improved,and the grid corrosion is reduced through simulation *** specific impulse under the given working conditions is 9877.24 s and the thrust is 7.28 *** on the simulation optimization,the limitation of the dual-stage grid is *** grid performs well under high voltage conditions(>3000 V)but not well under low voltage conditions(<2000 V).Finally,since argon is cheaper and more advantageous in future engineering applications,the plasma distribution and grid extraction ability under xenon and argon are analyzed and compared to study the flexibility of the dual-stage grid ion *** simulation results show that a set of optimal parameters is only applicable to the corresponding propellant,which needs to be optimized for different propellant types.

关键词： 3D modeling Dual-stage grid Ion thruster PIC/MCC method Plasma simulation

Confinement characteristic of primary electrons with the variation of channel width in the discharge chamber of annular ion thruster

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Chinese Journal of Aeronautics 2021年第5期34卷 79-92页

作者： Chang LU Guangqing XIA Bin SUN yajie han State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of TechnologyDalian 116024China Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province Dalian University of TechnologyDalian 116024China

In this paper,the confinement characteristic of primary electrons in the non-axisymmetric discharge chamber of annular ion thruster is investigated by a three-dimensional(3 D)non-self-consistent particle tracking model with Monte Carlo Collision(MCC)*** results show that:The density of primary electrons upstream of ion optics on cathode axis is about 5–50 times higher than that of the other side,which means that the density of primary electrons is obviously *** channel width has a significant effect on the average density and uniformity of primary *** average density can be increased by nearly 1.5 times under the appropriate channel width,meanwhile,the variance of density distribution can be reduced by more than 2 *** is because that increasing the channel width can improve the average confinement length of primary electrons ***,there is an infection point in the increase of primary electron average confinement length with the channel width,which caused by the significant change of magnetic field *** the case after the inflection point,primary electron mainly(more than 50%)moves to the channel center,which makes the average confinement length of primary electrons and their number in the discharge chamber increase largely.

关键词： Annular ion thruster Average confinement length Electric propulsion Ion thruster Primary electrons

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基于模拟退火算法的超宽带天线优化设计

电子质量 2024年第5期 43-46页

作者：郭彦文田亚平霍彩虹阴锦文韩亚杰姚明江苏师范大学科文学院江苏徐州221132

天线在无线通信系统中起着重要的作用,超宽带(UWB)天线更是天线设计中的一种重要方式。针对UWB天线,可以通过模拟退火算法对其进行优化设计,该算法在精度和收敛速度方面有着较高的优点,能够优化UWB天线的性能,有效地减小电磁干扰。仿真... 详细信息

天线在无线通信系统中起着重要的作用,超宽带(UWB)天线更是天线设计中的一种重要方式。针对UWB天线,可以通过模拟退火算法对其进行优化设计,该算法在精度和收敛速度方面有着较高的优点,能够优化UWB天线的性能,有效地减小电磁干扰。仿真结果表明:在2.05 GHz处时,S11小于-10 dB;在3.45 GHz时,S11小于-25 dB,在此频带,入射功率将以大于90%的效率被天线进行发射。同时,UWB天线的带宽覆盖基本在2.00~3.50 GHz的频段中,结果基本符合覆盖频段的要求;在2.45 GHz的工作频带中,仿真的增益结果为6.62 dBi,在YZ轴平面增益效果良好。经过模拟退火算法优化后的UWB天线,入射功率有了较大的提升,且符合覆盖频段的要求,信号保真效果良好。

关键词：模拟退火算法超宽带天线优化

Bismuth clusters pinned on TiO_(2) porous nanowires boosting charge transfer for CO_(2) photoreduction to CH_(4)

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Nano Research 2024年第3期17卷 1190-1198页

作者： Jiazhi Meng Kaiwen Wang Yang Wang Jiangping Ma Chaogang Ban yajie Feng Bin Zhang Kai Zhou Liyong Gan Guang han Danmei Yu Xiaoyuan Zhou College of Physics and Institute of Advanced Interdisciplinary Studies Chongqing UniversityChongqing 401331China School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 401331China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Beijing Key Lab of Microstructure and Properties of Advanced Materials Beijing University of TechnologyBeijing 100124China Analytical and Testing Center Chongqing UniversityChongqing 401331China

Artificial photosynthesis in carbon dioxide(CO_(2))conversion into value-added chemicals attracts considerable attention but suffers from the low activity induced by sluggish separation of photogenerated carriers and the kinetic bottleneck-induced unsatisfied ***,we prepare a new-style Bi/TiO_(2) catalyst formed by pinning bismuth clusters on TiO_(2) nanowires through being confined by pores,which exhibits high activity and selectivity towards photocatalytic production of CH_(4) from CO_(2).Boosted charge transfer from TiO_(2) through Bi to the reactants is revealed via in situ X-ray photon spectroscopy and time-resolved photoluminescence(PL).Further,in situ Fourier transform infrared results confirm that Bi/TiO_(2) not only overcomes the multi-electron kinetics challenge of CO_(2) to CH_(4) via boosting charge transfer,but also facilitates proton production and transfer as well as the intermediates*CHO and*CH_(3)O generation,ultimately achieving the tandem catalysis towards *** calculation also underlies that the more favorable reaction step from*CO to*CHO on Bi/TiO_(2) results in CH_(4) production with higher *** work brings new insights into rational design of photocatalysts with high performance and the formation mechanism of CO_(2) to CH_(4) for solar energy storage in future.

关键词： carbon dioxide(CO_(2))photoreduction charge transfer tandem catalysis methanation

CRISPR/CasΦ2-mediated gene editing in wheat and rye

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Journal of Integrative Plant Biology 2024年第4期66卷 638-641页

作者： Sanzeng Zhao Xueying han Yachen Zhu Yuwei han Huiyun Liu Zhen Chen Huifang Li Dan Wang Chaofan Tian Yuting Yuan yajie Guo Xiaomin Si Daowen Wang Xiang Ji State Key Laboratory of Wheat and Maize Crop Science and Center for Crop Genome EngineeringCollege of AgronomyHenan Agricultural UniversityZhengzhou 450046China Collaborative Innovation Center of Henan Grain Crops College of AgronomyHenan Agricultural UniversityZhengzhou 450046China State Key Laboratory of Crop Stress Adaptation and Improvement College of AgronomyHenan UniversityKaifeng 475004China The Shennong Laboratory Zhengzhou 450002China

The recent advancements in developing the CRISPR/Cas9 system and various derivative tools(e.g.,base editors)have accelerated basic plant science research and crop improvement by creating multiple types of genetic vari... 详细信息

关键词： CRISPR/Cas9 CRISPR/Cas

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田径耐力型项目运动员的合理饮食营养

食品安全导刊 2022年第32期 119-121页

作者：韩雅洁山东师范大学体育学院山东长清250300

田径运动是体育运动的基础,耐力型项目运动员的体能消耗很大,且由于其自身的运动特性,与其他田径项目有着很大的不同,因此运动员对膳食营养的要求也很高。本文旨在为田径耐力型项目运动员在赛前、赛中、赛后合理饮食以及营养素需求等方... 详细信息

田径运动是体育运动的基础,耐力型项目运动员的体能消耗很大,且由于其自身的运动特性,与其他田径项目有着很大的不同,因此运动员对膳食营养的要求也很高。本文旨在为田径耐力型项目运动员在赛前、赛中、赛后合理饮食以及营养素需求等方面进行阐述,促进教练员和科研人员合理分配、调整运动员的膳食,保障运动员在训练和比赛期间的营养需求。

关键词：田径耐力型运动项目合理营养