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Ion and electron motions in the outer electron diffusion region of collisionless magnetic reconnection

Earth and Planetary Physics 2024年第3期8卷 472-478页

作者： Cong Chang QuanMing lu san.lu Kai Huang RongSheng Wang Deep Space Exploration Laboratory School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences(CAS)Center for Excellence in Comparative Planetology CAS Key Laboratory of Geospace EnvironmentHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China

Two-dimensional particle-in-cell simulations are performed to study the coupling between ion and electron motions in collisionless magnetic *** electron diffusion region(EDR),where the electron motions are demagnetized,is found to have a two-layer structure:an inner EDR near the reconnection site and an outer EDR that is elongated to nearly 10 ion inertial lengths in the outflow *** the inner EDR,the speed of the electron outflow increases when the electrons move away from the X *** the outer EDR,the speed of the electron outflow first increases and then decreases until the electrons reach the boundary of the outer *** the boundary of the outer EDR,the magnetic field piles up and forms a depolarization *** the perspective of the fluid,a force analysis on the formation of electron and ion outflows has also been *** the X line,the electrons are accelerated by the reconnection electric field in the out-of-plane *** the electrons move away from the X line,we find that the Lorentz force converts the direction of the accelerated electrons to the x direction,forming an electron *** electric field forces and electron gradient forces tend to drag the electron *** acceleration along the x direction is caused by the Lorentz force,whereas the pressure gradient force tends to decelerate the ion *** these two terms are important,their effects on ions are almost *** Hall electric field force does positive work on ions and is not *** ions are continuously accelerated,and the ion and electron outflow velocities are almost the same near the depolarization front.

关键词： collisionless magnetic reconnection electron diffusion region force analysis particle-in-cell simulation

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Global hybrid simulations of soft X-ray emissions in the Earth’s magnetosheath

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Earth and Planetary Physics 2024年第1期8卷 47-58页

作者： Jin Guo TianRan Sun san.lu QuanMing lu Yu Lin XueYi Wang Chi Wang RongSheng Wang Kai Huang School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology/CAS Key Lab of Geospace Environment University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China National Space Science Center Chinese Academy of SciencesBeijing 100190China Physics Department Auburn UniversityAuburnALUSA

Earth’s magnetopause is a thin boundary separating the shocked solar wind plasma from the magnetospheric plasmas,and it is also the boundary of the solar wind energy transport to the *** X-ray imaging allows investigation of the large-scale magnetopause by providing a two-dimensional(2-D)global view from a *** performing 3-D global hybrid-particle-in-cell(hybrid-PIC)simulations,we obtain soft X-ray images of Earth’s magnetopause under different solar wind conditions,such as different plasma densities and directions of the southward interplanetary magnetic *** all cases,magnetic reconnection occurs at low latitude *** soft X-ray images observed by a hypothetical satellite are shown,with all of the following identified:the boundary of the magnetopause,the cusps,and the *** X-ray emissivity in the magnetosheath is characterized by large amplitude fluctuations(up to 160%);however,the maximum line-of-sight-integrated X-ray intensity matches the tangent directions of the magnetopause well,indicating that these fluctuations have limited impact on identifying the magnetopause boundary in the X-ray ***,the magnetopause boundary can be identified using multiple viewing *** also find that solar wind conditions have little effect on the magnetopause *** Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)mission will provide X-ray images of the magnetopause for the first time,and our global hybrid-PIC simulation results can help better understand the 2-D X-ray images of the magnetopause from a 3-D perspective,with particle kinetic effects considered.

关键词： magnetopause X-ray emissivity X-ray imaging SMILE global hybrid-PIC simulation

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Glymphatic function and its influencing factors in different glucose metabolism states

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World Journal of Diabetes 2024年第7期15卷 1537-1550页

作者： Bin Tian Chen Zhao Jia-Li Liang Hui-Ting Zhang Yi-Fan Xu Hui-Lei Zheng Jia Zhou Jiang-Nian Gong Shu-Ting lu Zi-san Zeng Department of Radiology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Magnetic Resonance Research Collaboration Siemens HealthineersGuangzhou 510620Guangdong ProvinceChina Magnetic Resonance Research Collaboration Siemens Healthineers Ltd.Wuhan 430071Hubei ProvinceChina Department of Health Management The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Endocrinology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina

BACKGROUND Dysfunction of the glymphatic system in the brain in different stages of altered glucose metabolism and its influencing factors are not well *** To investigate the function of the glymphatic system and its clinical correlates in patients with different glucose metabolism states,the present study employed diffusion tensor imaging along the perivascular space(DTI-ALPS)*** Sample size was calculated using the pwr package in R *** crosssectional study enrolled 22 patients with normal glucose metabolism(NGM),20 patients with prediabetes,and 22 patients with type 2 diabetes mellitus(T2DM).A 3.0T magnetic resonance imaging was used to evaluate the function of the glymphatic *** mini-mental state examination(MMSE)was used to assess general cognitive *** DTI-ALPS index of bilateral basal ganglia and the mean DTI-ALPS index was ***,the correlation between DTI-ALPS and clinical features was *** The left-side,right-side,and mean DTI-ALPS index in the T2DM group were significantly lower than that in the NGM *** right-side DTI-ALPS and mean DTI-ALPS index in the T2DM group were significantly lower than those in the prediabetes ***-ALPS index lateralization was not *** MMSE score in the T2DM group was significantly lower than that in the NGM and prediabetes *** controlling for sex,the left-side DTI-ALPS and mean DTI-ALPS index in the prediabetes group were positively correlated with 2-hour postprandial blood glucose level;the left-side DTI-ALPS index was negatively correlated with total cholesterol and low-density lipoprotein *** right-side DTI-ALPS and mean DTI-ALPS index were negatively correlated with the glycosylated hemoglobin level and waist-to-hip ratio in the prediabetes *** left-side,right-side,and mean DTI-ALPS index in the T2DM group were positively correlated with *** left-side and mean DTIALPS index in the T2DM group were negatively

关键词： Glymphatic system Prediabetes Type 2 diabetes mellitus Magnetic resonance imaging Diffusion tensor imaging along the perivascular space

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Combining neural progenitor cell transplant and rehabilitation for enhanced recovery after cervical spinal cord injury

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Neural Regeneration Research 2024年第7期19卷 1433-1434页

作者： Camila M.Freria Paul lu Department of Neurosciences University of CaliforniaSan DiegoLa JollaCAUSA Veterans Administration san Diego Healthcare System San DiegoCAUSA

Efforts to promote recovery of function after human spinal cord injury(SCI) will likely require interventions to rgeting the corticospinal tract(CST) motor system:the most important pathway for voluntary motor control in *** system has historically been the most refractory to regenerative efforts after *** "nonregeneration" of the CST changed when robust regeneration of the CST into spared tissue was demonstrated by the inactivation of phosphatase and tensin homolog and delivery of inosine.

关键词： cervical progenitor injury

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维也纳的公共住宅:在建筑中实现的政策理念

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世界建筑导报 2024年第3期39卷 18-23页

作者：吕尚寰维也纳工业大学建筑与城规学院

全球不同区域住宅产业有关的领域,受特定文化、社会、经济和政策环境的影响,设计、规划、类型和形态都差异巨大。住宅设计与建设的过程,一方面根据房地产经济的规则,另一方面也被视为公共事务。维也纳有着一百多年政府直接强烈参与住房... 详细信息

全球不同区域住宅产业有关的领域,受特定文化、社会、经济和政策环境的影响,设计、规划、类型和形态都差异巨大。住宅设计与建设的过程,一方面根据房地产经济的规则,另一方面也被视为公共事务。维也纳有着一百多年政府直接强烈参与住房市场和住房生产的历史。该市也是世界上公共住宅比例最高的城市之一,当前有超过60%的人口居住在政府所有或补贴建造的住宅中。维也纳市是欧洲最大的房东,拥有超过220,000套公共住房,并且管理着200,000套由市政补贴建设的公寓。因此维也纳市一直是欧洲建筑产量最高的城市之一,处于中高密度的状态,同时每一代社会住宅都成为住宅研究与创新的试验场。良好的建筑环境使该市连续十多年被评为世界最宜居城市。本文总结维也纳社会政策和住房设计之间的历史关系及其对当地现代住宅设计原则的影响。

关键词：社会住房住房历史住房政策奥地利住房

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A_(2)B_(7)-type La-Mg-Ni alloys prepared by Mg thermal diffusion for improved hydrogen storage performance

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Rare Metals 2024年第7期43卷 3260-3272页

作者： Yong-Xi Zhang Guan-Jiu Wu Jing Gu Hong-Xing Kang Yuan Li Di Zhou Wen-Feng Wang lu Zhang Shu-Min Han Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China Department of Chemistry and Biochemistry San Diego State UniversitySan DiegoCA92182-1030USA State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China

A novel approach based on thermal diffusion was used to achieve controllable Mg content in A_(2)B_(7)-type La-Mg-Ni-based *** formation mechanism of the A_(2)B_(7)-type phase as a result of the thermal diffusion process and the effect of Mg content on hydrogen storage performance were investigated.X-ray diffraction(XRD)patterns and Rietveld refinement results showed that increased Mg transformed the LaNi_(5)phase in the La_(0.74)Sm_(0.03)Y_(0.23)Ni_(4.32)Al_(0.04)precursor alloy into a superlattice *** electron microscopy(SEM)images showed that Mg was evenly distributed in the alloy *** in the superlattice significantly inhibited the phase decomposition of the superlattice structure during the hydrogen absorption/desorption *** A_(2)B_(7)-type La_(0.57)Sm_(0.02)Y_(0.18)Mg_(0.23)Ni_(3.38)Al_(0.03)alloy composed of Gd_(2)Co_(7)and Ce_(2)Ni_(7)phases was successfully *** pressure-composition isotherm profiles showed that the alloy had a hydrogen storage capacity as high as 1.73 wt%,with good cycling *** 50 cycles of hydrogen absorption/desorption,the alloy retained a hydrogen storage capacity of 1.45 wt%,with a capacity retention rate of up to 84.28%.The Mg thermal diffusion process thus provides a new approach for the controlled preparation of La-Mg-Ni-based alloys.

关键词： La-Mg-Ni-based hydrogen storage alloy A_(2)B_(7)-type superlattice alloy Mg thermal diffusion process Phase transformation Hydrogen storage property

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Porphyrins,phthalocyanines,and related covalent-organic frameworks in the photochemical and electrochemical water splitting:A review

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Particuology 2024年第7期90卷 236-265页

作者： Oxana V.Kharissova Yolanda Peña Méndez Boris I.Kharisov Aleksandr LNikolaev Edith luévano-Hipólito lucy T.González Universidad Autónoma de Nuevo León Ave.Universidad s/nSan Nicolás de los GarzaNuevo León66455Mexico Department of Chemistry Moscow State UniversityVorobievy HillsMoscowRussia CONACYT-Universidad Autónoma de Nuevo León Facultad de Ingeniería Civil-Departamento de Ecomateriales y EnergíaCd.UniversitariaC.P.66455San Nicolás de los GarzaNLMexico Tecnologico de Monterrey Escuela de Ingeniería y CienciasMonterreyNuevo León 64890Mexico Tecnologico de Monterrey Centro del AguaMonterreyNuevo León 64890Mexico

In this review,the possibilities of photochemical and electrochemical water splitting(WS)using porphyrins,phthalocyanines,related macrocycles,and their metal complexes are *** efforts are being carried out in order to develop novel and cheap methods for water decomposition to generate inexhaustible greener energy sources(molecular hydrogen)instead of oil and *** processes of WS in heterogeneous and homogeneous media require novel photo-and electrocatalysts,in particular those on macrocycle basis.A high WS efficiency has been observed for porphyrins and phthalocyanines,showing their suitability both for HER and OER processes are available using these relative compounds for WS *** can be used in photocatalytic and electrocatalytic WS processes both in their free forms or as metal porphyrins/porphyrinates,mainly loaded on various inorganic materials,such as Au NPs,C_(3)N_(4),GaP,KTaO_(3),GaP,and so on,as part of porphyrin-containing polymers or on electrode surface as modifying coatings,being sometimes better than commercial catalysts,such as Pt/*** H2 evolution can be considerably depended on the shape of porphyrin particles;in particular,porphyrin nanowires can yield up to 20 times more H2 than its *** certain cases,both HER and OER can be driven in the same electrolyte using metal *** capacity of metal porphyrins to generate ROS(in particular,singlet oxygen 1O_(2))under ultrasonic treatment is known and can be successfully used for H_(2)O_(2) and O_(2) *** can be used in similar processes in free form or as composites with inorganic or organic counterparts,being immobilized on nanocarbons,metal oxides and salts,or simply dissolved in water acting in a homogeneous *** additional use of ultrasound can lead to better results due to the synergistic effect of the sonochemical treatment and ***-organic frameworks are also applied for WS purposes and are mainly based

关键词： Porphyrins Phthalocyanines COFs Water splitting Photocatalysis Electrocatalysis

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高校思想政治理论课传导主流意识形态的四重逻辑

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当代教研论丛 2024年第7期10卷 103-107页

作者：曾丹凤肖路珊曹和修肇庆学院马克思主义学院广东肇庆526061

高校是意识形态斗争的前沿阵地,高校思想政治理论课传导主流意识形态具有逻辑必然性。在理论逻辑层面,它是青年学生的特殊性与主流意识形态科学性之间的张力使然;在历史逻辑层面,它是对党的历史经验和工作范式的传承和发扬;在实践逻辑层... 详细信息

高校是意识形态斗争的前沿阵地,高校思想政治理论课传导主流意识形态具有逻辑必然性。在理论逻辑层面,它是青年学生的特殊性与主流意识形态科学性之间的张力使然;在历史逻辑层面,它是对党的历史经验和工作范式的传承和发扬;在实践逻辑层面,它是应对意识形态领域斗争、维护国家政治安全的现实需要;在时代逻辑层面,它是实现党的人才培养目标的战略举措,是协同推进思想政治理论课和主流意识形态建设的有效尝试。

关键词：高校思想政治理论课传导主流意识形态逻辑必然性

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融合物品转换关系和时序信息的会话推荐算法

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计算机科学与探索 2024年第3期18卷 768-779页

作者：吴文政卢先领江南大学物联网工程学院江苏无锡214122

针对现有图神经网络会话推荐算法忽略了各类辅助信息,导致不能准确地建模会话序列的问题,提出了一种融合物品的转换关系和时序信息的会话推荐算法(RTSR)。首先利用图网络结构得到任意两个节点之间的最短路径序列,经过双向门控循环单元(G... 详细信息

针对现有图神经网络会话推荐算法忽略了各类辅助信息,导致不能准确地建模会话序列的问题,提出了一种融合物品的转换关系和时序信息的会话推荐算法(RTSR)。首先利用图网络结构得到任意两个节点之间的最短路径序列,经过双向门控循环单元(GRU)将其编码为对应物品之间的转换关系,再结合自注意力机制从图的角度捕捉会话的全局依赖信息。同时设计了一种无损图编码方案来缓解会话图编码过程中信息损失的问题。该方案将会话序列中的时序信息进行合理的量化,并将其作为会话图中边的权重,再结合门控图神经网络获取会话的局部依赖信息。最后,线性组合全局依赖信息和局部依赖信息并结合反向位置信息,最终生成用户对物品的兴趣偏好,并给出推荐列表。在公共基准数据集Gowalla和Diginetica上与SR-GNN、GC-san、GCE-GNN等主流模型进行性能对比实验,结果表明RTSR在平均倒数排名方面分别至少提高了6.13%和1.58%,同时推荐精准度方面也有相应的提高。

关键词：图神经网络会话推荐最短路径序列时序信息反向位置信息

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To explore the mechanism of Yigong san anti-gastric cancer and immune regulation

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 1965-1994页

作者： Dou-Dou lu Ling Yuan Zhao-Zhao Wang Jian-Jun Zhao Yu-Hua Du Na Ning Guo-Qing Chen Shi-Cong Huang Yi Yang Zhe Zhang Yi Nan School of Clinical Medicine Ningxia Medical UniversityYinchuan 750004Ningxia Hui Autonomous RegionChina College of Pharmacy Ningxia Medical UniversityYinchuan 750004Ningxia Hui Autonomous RegionChina Traditional Chinese Medicine College Ningxia Medical UniversityYinchuan 750004Ningxia Hui Autonomous RegionChina Department of Chinese Medical Gastrointestinal China-Japan Friendship HospitalBeijing 100029China Key Laboratory of Ningxia Minority Medicine Modernization Ministry of Education Ningxia Medical UniversityYinchuan 750004Ningxia Hui Autonomous RegionChina

BACKGROUND Yigong san(YGS)is a representative prescription for the treatment of digestive disorders,which has been used in clinic for more than 1000 ***,the mechanism of its anti-gastric cancer and regulate immunity are still remains *** To explore the mechanism of YGS anti-gastric cancer and immune *** Firstly,collect the active ingredients and targets of YGS,and the differentially expressed genes of gastric ***,constructed a protein-protein interaction network between the targets of drugs and diseases,and screened hub *** the clinical relevance,mutation and repair,tumor microenvironment and drug sensitivity of the hub gene were ***,molecular docking was used to verify the binding ability of YGS active ingredient and hub *** Firstly,obtained 55 common targets of gastric cancer and *** Kyoto Encyclopedia of Genes and Genomes screened the microtubule-associated protein kinase signaling axis as the key pathway and IL6,EGFR,MMP2,MMP9 and TGFB1 as the hub *** 5 hub genes were involved in gastric carcinogenesis,staging,typing and prognosis,and their mutations promote gastric cancer ***,molecular docking results confirmed that the components of YGS can effectively bind to therapeutic *** YGS has the effect of anti-gastric cancer and immune regulation.

关键词： Gastric cancer Yigong san Mechanism Immune

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