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Functional near-infrared spectroscopy in non-invasive neuromodulation

Neural Regeneration Research 2024年第7期19卷 1517-1522页

作者： Congcong Huo Gongcheng Xu Hui Xie Tiandi Chen guangjian Shao Jue wang Wenhao Li Daifa wang Zengyong Li Beijing Advanced Innovation Center for Biomedical Engineering Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability National Research Center for Rehabilitation Technical AidsBeijingChina School of Mechatronic Engineering and Automation Foshan UniversityFoshanGuangdong ProvinceChina School of Rehabilitation Engineering Beijing College of Social AdministrationBeijingChina Key Laboratory of Neuro-functional Information and Rehabilitation Engineering of the Ministry of Civil Affairs BeijingChina

Non-invasive cerebral neuromodulation technologies are essential for the reorganization of cerebral neural networks,which have been widely applied in the field of central neurological diseases,such as stroke,Parkinson’s disease,and mental disorders.Although significant advances have been made in neuromodulation technologies,the identification of optimal neurostimulation paramete rs including the co rtical target,duration,and inhibition or excitation pattern is still limited due to the lack of guidance for neural circuits.Moreove r,the neural mechanism unde rlying neuromodulation for improved behavioral performance remains poorly understood.Recently,advancements in neuroimaging have provided insight into neuromodulation techniques.Functional near-infrared spectroscopy,as a novel non-invasive optical brain imaging method,can detect brain activity by measuring cerebral hemodynamics with the advantages of portability,high motion tole rance,and anti-electromagnetic interference.Coupling functional near-infra red spectroscopy with neuromodulation technologies offe rs an opportunity to monitor the cortical response,provide realtime feedbac k,and establish a closed-loop strategy integrating evaluation,feedbac k,and intervention for neurostimulation,which provides a theoretical basis for development of individualized precise neuro rehabilitation.We aimed to summarize the advantages of functional near-infra red spectroscopy and provide an ove rview of the current research on functional near-infrared spectroscopy in transcranial magnetic stimulation,transcranial electrical stimulation,neurofeedback,and braincomputer interfaces.Furthermore,the future perspectives and directions for the application of functional near-infrared spectroscopy in neuromodulation are summarized.In conclusion,functional near-infrared spectroscopy combined with neuromodulation may promote the optimization of central pellral reorganization to achieve better functional recovery form central nervous system diseases.

关键词： brain-computer interface cerebral neural networks functional near-infrared spectroscopy neural circuit neurofeedback neurological diseases neuromodulation non-invasive brain stimulation transcranial electrical stimulation transcranial electrical stimulation

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Resuscitation fluids as drugs:targeting the endothelial glycocalyx

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Chinese Medical Journal 2022年第2期135卷 137-144页

作者： guangjian wang Hongmin Zhang Dawei Liu Xiaoting wang Chinese Critical Ultrasound Study Group Department of Critical Care Medicine Peking Union Medical College HospitalPeking Union Medical College&Chinese Academy of Medical SciencesBeijing 100730China

Fluid resuscitation is an essential intervention in critically ill patients,and its ultimate goal is to restore tissue perfusion.Critical illnesses are often accompanied by glycocalyx degradation caused by inflammatory reactions,hypoperfusion,shock,and so forth,leading to disturbed microcirculatory perfusion and organ dysfunction.Therefore,maintaining or even restoring the glycocalyx integrity may be of high priority in the therapeutic strategy.Like drugs,however,different resuscitation fluids may have beneficial or harmful effects on the integrity of the glycocalyx.The purpose of this article is to review the effects of different resuscitation fluids on the glycocalyx.Many animal studies have shown that normal saline might be associated with glycocalyx degradation,but clinical studies have not confirmed this finding.Hydroxyethyl starch(HES),rather than other synthetic colloids,may restore the glycocalyx.However,the use of HES also leads to serious adverse events such as acute kidney injury and bleeding tendencies.Some studies have suggested that albumin may restore the glycocalyx,whereas others have suggested that balanced crystalloids might aggravate glycocalyx degradation.Notably,most studies did not correct the effects of the infusion rate or fluid volume;therefore,the results of using balanced crystalloids remain unclear.Moreover,mainly animal studies have suggested that plasma may protect and restore glycocalyx integrity,and this still requires confirmation by high-quality clinical studies.

关键词： Fluid resuscitation Resuscitation fluid Fluid therapy Endothelial glycocalyx Glycocalyx

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Dual-additives enable stable electrode-electrolyte interfaces for long life Li-SPAN batteries

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Chinese Chemical Letters 2024年第5期35卷 459-465页

作者： Zhenqiang Guo Huicong Yang Qian Wei Shengjun Xu guangjian Hu Shuo Bai Feng Li School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Department of Biochemistry and Molecular Biology College of Life ScienceChina Medical UniversityShenyang 110122China Dalian National Laboratory for Clean Energy Dalian 116023China Shenyang King Power Technology Co. Ltd.Shenyang 110016China

Sulfurized polyacrylonitrile(SPAN)is proposed as a promising cathode material for lithium sulfur batteries.However,the continuous side reactions at the electrolyte-electrode interfaces as well as the slow redox kinetics of SPAN cathode deteriorate the electrochemical performance.In this study,an electrolyte with dual-additives comprising 2-fluoropyridine(2-FP)and lithium difluorobis(oxalato)phosphate(LiDFBOP)was used to improve the performance of Li||SPAN cells.2-FP has a lower lowest occupied molecular orbital energy than that of the solvents in the electrolyte,leading to its prior reduction.A LiF-rich film can be formed on the electrode,effectively improving the stability of the electrolyte-electrode interfaces and prolonging the life.Simultaneously,LiDFBOP could form an electrolyte-electrode interface film containing a large amount of Li_(x)PO_(y)F_(z) species,compensating for the kinetic deterioration caused by the lower ionic conductive of LiF formed at the electrolyte-electrode interface.Hence,an electrode-interface film with good chemical stability and high Li^(+) transport was established by LiF and Li_(x)PO_(y)F_(z)-rich species.The Li||SPAN cell with the electrolyte containing dual-additives demonstrates an excellent capacity retention of 97.5%after 200 cycles at 1.0 C,25℃,comparing to 56.2%capacity retention without additives.Moreover,the rate capacities of cells with dual-additives can reach 1128.1 mAh/g at 5 C,comparing to only 813.5 mAh/g using electrolyte without additives.Our results shown that the dual-additives in electrolyte provide a promising strategy for practical application of lithium sulfur batteries with SPAN cathodes.

关键词： Sulfurized polyacrylonitrile Lithium metal Interface film 2-Fluoropyridine Difluorobis(oxalato)phosphate

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Advances in ice avalanches on the Tibetan Plateau

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Journal of Mountain Science 2024年第6期21卷 1814-1829页

作者： TANG Minggao LI Guang ZHAO Huanle XU Qiang WU guangjian YANG Wei GUO Daojing State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China College of Environment and Civil Engineering Chengdu University of TechnologyChengdu 610059China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100101China

As some of the greatest natural disasters in the cryosphere,ice avalanches(IAs)seriously threaten lives and cause catastrophic damage to the resource environment,but a comprehensive overview of the state of knowledge on IAs remains lacking.We summarized 63 IAs on the Tibetan Plateau(TP)since the 20th century,of which,over 20 IAs occurred after the 21st century.The distributions of IAs are mainly concentrated in the southeastern and northwestern TP,and the occurrence time of IAs is mostly concentrated from July to September.We highlight recent advances in mechanical properties and genetic mechanisms of IAs and emphasize that temperature,rainfall,and seismicity are the inducing factors.The failure modes of IAs are summarized into 6 categories by examples:slip pulling type,slip toppling type,slip breaking type,water level collapse type,cave roof collapse type,and wedge failure type.Finally,we deliver recommendations concerning the risk assessment and prediction of IAs.The results provide important scientific value for addressing climate change and resisting glacier-related hazards.

关键词： Ice avalanche Global warming Genetic mechanism Risk assessment Tibetan Plateau

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Six kilowatt record all-fiberized and narrow-linewidth fiber amplifier with near-diffraction-limited beam quality

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High Power Laser Science and Engineering 2022年第4期10卷 1-6页

作者： guangjian wang Jiaxin Song Yisha Chen Shuai Ren Pengfei Ma Wei Liu Tianfu Yao Pu Zhou College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangsha 410073China

In this work,an all-fiberized and narrow-linewidth fiber amplifier with record output power and near-diffraction-limited beam quality is presented.Up to 6.12 kW fiber laser with the conversion efficiency of approximately 78.8%is achieved through the fiber amplifier based on a conventional step-index active fiber.At the maximum output power,the 3 dB spectral linewidth is approximately 0.86 nm and the beam quality factor is M_(x)^(2)=1.43,M_(y)^(2)=1.36.We have also measured and compared the output properties of the fiber amplifier employing different pumping schemes.Notably,the practical power limit of the fiber amplifier could be estimated through the maximum output powers of the fiber amplifier employing unidirectional pumping schemes.Overall,this work could provide a good reference for the optimal design and potential exploration of high-power narrow-linewidth fiber laser systems.

关键词： fiber laser high power narrow linewidth

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Regulating interfacial chemistry and kinetic behaviors of F/Mo co-doping Ni-rich layered oxide cathode for long-cycling lithium-ion batteries over-20°C-60°C

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Journal of Energy Chemistry 2024年第7期94卷 449-457页

作者： Siqi Guan Lin Tao Pei Tang Ruopian Fang Huize Wu Nan Piao Huicong Yang guangjian Hu Xin Geng Lixiang Li Baigang An Feng Li Institute of Energy Materials and Electrochemistry Research University of Science and Technology LiaoningAnshan 114051LiaoningChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016LiaoningChina Shenyang King Power Tech.Co. Ltd.Shenyang 110016LiaoningChina School of Chemical Engineering The University of New South WalesSydney 2052NSWAustralia

Ni-rich layered oxide cathodes have shown promise for high-energy lithium-ion batteries(LIBs)but are usually limited to mild environments because of their rapid performance degradation under extreme temperature conditions(below0°C and above 50 °C).Here,we report the design of F/Mo co-doped LiNi_(0.8)Co_(0.1)iMn_(0.1)O_(2)(FMNCM)cathode for high-performance LIBs from-20 to 60°C.F^(-) doping with high electronegativity into the cathode surface is found to enhance the stability of surface lattice structure and protect the interface from side reactions with the electrolyte by generating a LiF-rich surface layer.Concurrently,the Mo^(6+)doping suppresses phase transition,which blocks Li^(+)/Ni^(2+)mixing,and stabilizes lithium-ion diffusion pathway.Remarkably,the FMNCM cathode demonstrates excellent cycling stability at a high cutoff voltage of 4.4 V,even at 60°C,maintaining 90.6%capacity retention at 3 C after 150 cycles.Additionally,at temperatures as low as-20°C,it retains 77.1%of its room temperature capacity,achieving an impressive 97.5%capacity retention after 500 cycles.Such stable operation under wide temperatures has been further validated in practical Ah-level pouch-cells.This study sheds light on both fundamental mechanisms and practical implications for the design of advanced cathode materials for wide-temperature LIBs,presenting a promising path towards high-energy and long-cycling LIBs with temperatureadaptability.

关键词： Anion-cation co-doping Wide temperature operation Ni-richlayered cathode Phase transition Surface/interface

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Vision, application scenarios, and key technology trends for 6G mobile communications

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Science China(Information Sciences) 2022年第5期65卷 5-31页

作者： Zhiqin wang Ying DU Kejun WEI Kaifeng HAN Xiaoyan XU Guiming WEI Wen TONG Peiying ZHU Jianglei MA Jun wang guangjian wang Xueqiang YAN Jiying XIANG He HUANG Ruyue LI Xinhui wang Yingmin wang Shaohui SUN Shiqiang SUO Qiubin GAO Xin SU China Academy of Information and Communications Technology Huawei Technologies Canada Co. Ltd. Huawei Technologies Co. Ltd.(Hangzhou) Huawei Technologies Co. Ltd.(Chengdu) Huawei Technologies Co. Ltd.(Shanghai) ZTE Corporation Datang Mobile Communications Equipment Co. Ltd.

With the global commercialization of the fifth-generation(5G) network, many countries, including China, USA, European countries, Japan, and Korea, have started exploring 6G mobile communication network, following the tradition of “planning the next while commercializing one generation”. Currently,studies on 6G networks are at the infancy stage. Research on the vision and requirements for 6G is still ongoing, and the industry is yet to clarify the key enabling technologies for 6G. However, 6G will certainly build on the success of 5G. Therefore, developing high-quality 5G networks and seamlessly integrating 5G with verticals are the priorities before 2030, when 6G is projected to be commercialized. Also, global 5G standards will keep evolving to better support vertical applications. As a milestone, the Third-Generation Partnership Project(3GPP) published Release 16 in July 2020, which continuously enhanced the capabilities of mobile broadband service based on Release 15 and realized the support for low-delay and high-reliability applications, such as Internet of Vehicles and industrial Internet. Currently, 3GPP is working on Releases 17 and 18, focusing on meeting the demands of medium-and high-data-rate machine communication with low-cost and high-precision positioning, which will be published in June 2022. Thus, 6G networks will further expand the application fields and scope of the Internet of Things to accommodate those services and applications that are beyond the capabilities of 5G networks. Herein, we present our vision, application scenarios,and key technological trends for 6G networks. Furthermore, we propose several future research opportunities in 6G networks with regard to industrialization and standardization.

关键词： sixth-generation (6G) mobile communication holographic radio technology 6G vision application scenarios of 6G terahertz communication integrated sensing and communication integrated intelligence and communication ultra-massive MIMO reconfigurable intelligent surface co-frequency co-time full-duplex

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Ⅲ型纤连蛋白结构域包含蛋白5抑制巨噬细胞焦亡的作用机制

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中国组织工程研究 2024年第25期28卷 4005-4012页

作者：赵广建刘大男周博王尧贵州医科大学附属医院心内科贵州医科大学医学科学研究所贵州省贵阳市550004

背景:Ⅲ型纤连蛋白结构域包含蛋白5(fibronectin type Ⅲ domain-containing protein 5,FNDC5)是一种肌肉因子,具有调节糖脂代谢、抗炎、抗氧化及改善胰岛素抵抗等功能,并且具有调节多种细胞焦亡的能力。目的:探讨FNDC5对巨噬细胞焦亡... 详细信息

背景:Ⅲ型纤连蛋白结构域包含蛋白5(fibronectin type Ⅲ domain-containing protein 5,FNDC5)是一种肌肉因子,具有调节糖脂代谢、抗炎、抗氧化及改善胰岛素抵抗等功能,并且具有调节多种细胞焦亡的能力。目的:探讨FNDC5对巨噬细胞焦亡的作用及潜在机制。方法:(1)构建FNDC5基因过表达和沉默慢病毒载体,将慢病毒载体转染至THP-1细胞株,通过观察细胞绿色荧光表达、qPCR和Western blot验证转染效果。(2)佛波酯诱导THP-1细胞分化为巨噬细胞,通过氧化性低密度脂蛋白(oxidized low-density lipoprotein,ox-LDL)构建巨噬细胞焦亡模型,分组:NC组、ox-LDL组、ox-LDL+MOCK1组、ox-LDL+Ov-FNDC5组、ox-LDL+MOCK2组和ox-LDL+shFNDC5组。(3)采用Hoechst 33342/PI荧光双染和乳酸脱氢酶释放实验评估细胞焦亡程度,采用qPCR和Western blot检测相关分子mRNA和蛋白表达水平,采用ELISA检测细胞上清液中白细胞介素1β和白细胞介素18释放水平。结果与结论:与ox-LDL+MOCK1组相比,过表达FNDC5可显著降低巨噬细胞焦亡率以及乳酸脱氢酶、白细胞介素1β、白细胞介素18释放水平,显著抑制NF-κB p65、NF-κB p50、NLRP3、ASC、Caspase-1及GSDMD的mRNA表达,显著抑制NF-κB p65、NF-κB p50、NLRP3、ASC、Cleaved Caspase-1及GSDMD-N的蛋白表达;与ox-LDL+MOCK2组相比,沉默FNDC5则出现相反结果。结果表明:FDNC5可能通过抑制NF-κB/NLRP3通路缓解巨噬细胞焦亡。

关键词：巨噬细胞 Ⅲ型纤连蛋白结构域包含蛋白5 FNDC5 NF-κB NLRP3 细胞焦亡

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百合育子方对少弱精子症大鼠附睾组织CFTR、AQP、ZIP离子通道和氧化应激的影响

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中国实验方剂学杂志 2024年第7期30卷 140-146页

作者：王广建毕佳杰张天翼马婧王树松李波河北省中医院石家庄050011 承德医学院研究生学院河北承德060700 河北省生殖健康医院河北省生殖医学重点实验室石家庄050071

目的:观察百合育子方(BYP)对少弱精子症(OAS)大鼠附睾囊性纤维化跨膜转运调节蛋白(CFTR)、水通道蛋白(AQP)、锌转运蛋白(ZIP)表达和附睾氧化应激的影响,探讨其干预OAS的作用机制。方法:35只大鼠适应性饲养1周后,随机选取7只作为正常组,2... 详细信息

目的:观察百合育子方(BYP)对少弱精子症(OAS)大鼠附睾囊性纤维化跨膜转运调节蛋白(CFTR)、水通道蛋白(AQP)、锌转运蛋白(ZIP)表达和附睾氧化应激的影响,探讨其干预OAS的作用机制。方法:35只大鼠适应性饲养1周后,随机选取7只作为正常组,28只大鼠采用雷公藤多苷30 mg·kg^(-1)造模,4周后随机分成模型组、左卡尼汀组和BYP低、高剂量组,每组7只。正常组和模型组给予等量生理盐水,左卡尼汀组给予左卡尼汀100 mg·kg^(-1),BYP低、高剂量组分别给予BYP 6.3、12.6 g·kg^(-1)灌胃,每日1次,连续4周。实验结束后检测大鼠精子计数和活力,苏木素-伊红(HE)染色观察附睾组织病理结构,蛋白免疫印迹法(Western blot)检测CFTR、AQP9、AQP3、ZIP8、ZIP12等蛋白的表达,酶联免疫吸附测定法(ELISA)检测附睾组织α-糖苷酶(α-GC)、唾液酸(SA)、肉毒碱、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、丙二醛(MDA)的含量,用电感耦合等离子体质谱仪测定附睾组织锌含量,锌离子探针检测游离锌离子含量。结果:与正常组比较,模型组大鼠精子计数和活力降低(P<0.05),附睾组织结构紊乱;附睾组织α-GC、肉毒碱含量降低(P<0.05),MDA水平升高,SOD,GSH-Px和锌水平下调(P<0.05);附睾头部和尾部CFTR、ZIP12表达下调,AQP3表达上调,附睾尾部ZIP8表达上调(P<0.05);与模型组比较,BYP可明显改善精子计数和活力,恢复OAS大鼠附睾的组织结构,增加组织α-GC、肉毒碱含量(P<0.05);上调附睾头部和尾部CFTR、ZIP12表达,降低附睾尾部ZIP8和附睾头部AQP3的表达(P<0.05);提高附睾组织SOD、GSH-Px水平和总锌含量,下调MDA水平(P<0.05)。结论:百合育子方可能通过调节OAS大鼠附睾CFTR、AQP3、ZIP12离子通道表达和局部抗氧化机制来恢复其组织结构和功能,改善其精液质量。

关键词：百合育子方附睾囊性纤维化跨膜转运调节蛋白水通道蛋白锌转运蛋白氧化应激

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Neural Network and GBSM Based Time-Varying and Stochastic Channel Modeling for 5G Millimeter Wave Communications

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China Communications 2019年第6期16卷 80-90页

作者： Xiongwen Zhao Fei Du Suiyan Geng Ningyao Sun Yu Zhang Zihao Fu guangjian wang School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China Huawei Technologies Co.Ltd. Chengdu Research InstituteChengdu 611731China

In this work,a frame work for time-varying channel modeling and simulation is proposed by using neural network(NN)to overcome the shortcomings in geometry based stochastic model(GBSM)and simulation approach.Two NN models are developed for modeling of path loss together with shadow fading(SF)and joint small scale channel parameters.The NN models can predict path loss plus SF and small scale channel parameters accurately compared with measurement at 26 GHz performed in an outdoor microcell.The time-varying path loss and small scale channel parameters generated by the NN models are proposed to replace the empirical path loss and channel parameter random numbers in GBSM-based framework to playback the measured channel and match with its environment.Moreover,the sparse feature of clusters,delay and angular spread,channel capacity are investigated by a virtual array measurement at 28 GHz in a large waiting hall.

关键词： time-varying channel neural network cluster channel modeling virtual array measurement 5G

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