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Facile and effective synthesis strategy for terb.um-doped hydroxyapatite toward photoelectric devices and flexib.e functional fib.rs

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Rare Metals 2024年第4期43卷 1713-1723页

作者： Xiao-Dong Zhang Kun Nie Zi-Yao Hu Ran-Ran Zhou Xiu-Qiang Duan Wu-b.n Dai Song-Song Nie Song-Jun Yao Luo-Xin Wang le-Fu Mei Hua Wang Yi-Yi Yao Xiao-Xue Ma Hub.i Key Lab.ratory for New Textile Materials and Applications and State Key Lab.ratory of New Textile Materials and Advanced Processing Technology School of Materials Science and EngineeringWuhan Textile UniversityWuhan430200China Key Lab.ratory of Testing and Tracing of Rare Earth Products for State Market Regulation Jiangxi University of Science and TechnologyGanzhou341000China Hub.i Key Lab.ratory of Plasma Chemistry and Advanced Materials and Key Lab.ratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of TechnologyWuhan430205China

As a material with good b.ocompatib.lity,hydroxyapatite(HAP)can have optical properties after doping with various rare earth *** a b.ocompatib.e fluorescent material,doped HAP could have b.oad applications in b.ological prob.s,drug delivery,optoelectronic materials,fluorescence anti-counterfeiting,and other *** this paper,we put forward the preparation of HAP doped with terb.um(Ⅲ)ions(Tb.(3+))b. hydrothermal *** controlling the Tb.(3+)doping content in reaction and the reaction time,the changes in HAP's structure,morphology,and luminescence properties under different conditions were *** the doping amount of Tb.(3+)reached an optimal value,the dipole-quadrupole would occur and the concentration would b. *** control experiment showed that the optimal Tb.+content was 7.5×10^(-5)mol,which showed the b.st fluorescence ***,a non-luminous material,was rarely used in the field of fluorescent anti-counterfeiting and photoelectric *** proposed to prepare a luminescent aramid/polyphenylene sulfide(ACFs/PPS)fib.r paper and a new light-emitting diode(leD)using the Tb.doped HAP *** composite sample exhib.ted an excellent stab.lity and fluorescence performance,which also demonstrated a possib.lity of HAP applications in anticounterfeiting and *** introduction of Tb.+dopant HAP was done to give HAP optical properties and b.oaden the application range of HAP.

关键词： Hydroxyapatite Rare earth luminescence Photoelectric device Aramid Polyphenylene sulfide fib.r paper Luminescent fib.r

Mutual regulation of microglia and astrocytes after Gas6 inhib.ts spinal cord injury

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Neural Regeneration Research 2025年第2期20卷 557-573页

作者： Jiewen Chen Xiaolin Zeng le Wang Wenwu Zhang Gang Li Xing Cheng Peiqiang Su Yong Wan Xiang Li Department of Spine Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Guangdong Province Key Lab.ratory of Orthopedics and Traumatology GuangzhouGuangdong ProvinceChina

Invasive inflammation and excessive scar formation are the main reasons for the difficulty in repairing nervous tissue after spinal cord *** and astrocytes play key roles in the spinal cord injury micro-environment and share a close ***,the mechanisms involved remain *** this study,we found that after spinal cord injury,resting microglia(M0)were polarized into pro-inflammatory phenotypes(MG1 and MG3),while resting astrocytes were polarized into reactive and scar-forming *** expression of growth arrest-specific 6(Gas6)and its receptor Axl were significantly down-regulated in microglia and astrocytes after spinal cord *** vitro experiments showed that Gas6 had negative effects on the polarization of reactive astrocytes and pro-inflammatory microglia,and even inhib.ted the cross-regulation b.tween *** further demonstrated that Gas6 can inhib.t the polarization of reactive astrocytes b. suppressing the activation of the Yes-associated protein signaling ***,in turn,inhib.ted the polarization of pro-inflammatory microglia b. suppressing the activation of the nuclear factor-κb.p65 and Janus kinase/signal transducer and activator of transcription signaling *** vivo experiments showed that Gas6 inhib.ted the polarization of pro-inflammatory microglia and reactive astrocytes in the injured spinal cord,thereb. promoting tissue repair and motor function ***,Gas6 may play a role in the treatment of spinal cord *** can inhib.t the inflammatory pathway of microglia and polarization of astrocytes,attenuate the interaction b.tween microglia and astrocytes in the inflammatory microenvironment,and thereb. alleviate local inflammation and reduce scar formation in the spinal cord.

关键词： astrocytes Axl cell polarization Gas6 Hippo signal inflammatory micro-environment intercellular interaction microglia single-cell sequencing spinal cord injury

Practical and privacy-preserving geo-social-b.sed POI recommendation

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Journal of Information and Intelligence 2024年第2期2卷 148-166页

作者： Qi Xu Hui Zhu Yandong Zheng Fengwei Wang le Gao School of Cyb.r Engineering Xidian UniversityXi'an 710126China Science and Technology on Communication Networks Lab.ratory Shijiazhuang 050081China Faculty of Intelligent Manufacturing Wuyi UniversityJiangmen 529020China

With the rapid development of location-b.sed services and online social networks,POI recommendation services considering geographic and social factors have received extensive ***,the vigorous development of cloud computing has prompted service providers to outsource data to the cloud to provide POI recommendation ***,there is a degree of distrust of the cloud b. service *** protect digital assets,service providers encrypt data b.fore outsourcing ***,encryption reduces data availab.lity,making it more challenging to provide POI recommendation services in outsourcing *** privacy-preserving schemes for geo-social-b.sed POI recommendation have b.en presented,b.t they have some limitations in supporting group query,considering b.th geographic and social factors,and query accuracy,making these schemes *** solve this issue,we propose two practical and privacy-preserving geo-social-b.sed POI recommendation schemes for single user and group users,which are named GSPR-S and ***,we first utilize the quad tree to organize geographic data and the MinHash method to index social ***,we apply b.V fully homomorphic encryption to design some private algorithms,including a private max/min operation algorithm,a private rectangular set operation algorithm,and a private rectangular overlapping detection *** that,we use these algorithms as b.ilding b.ocks in our schemes for efficiency *** to security analysis,our schemes are proven to b. secure against the honest-b.t-curious cloud servers,and experimental results show that our schemes have good performance.

关键词： Cloud computing Geo-social-b.sed data MinHash POI recommendation Privacy preservation

The role of extracorporeal life support and timing of repair in infants with congenital diaphragmatic hernia

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World Journal of Pediatric Surgery 2024年第2期7卷 90-99页

作者： Daniel b.Gehle Logan C Meyer Tim Jancelewicz le b.nheur Children's Hospital University of Tennessee Health Science CenterMemphisTennesseeUSA

Extracorporeal life support(ECLS)serves as a rescue therapy for patients with congenital diaphragmatic hernia(CDH)and severe cardiopulmonary failure,and only half of these patients survive to *** costly intervention has a significant complication risk and is reserved for patients with the most severe disease physiology refractory to maximal cardiopulmonary *** contraindications to ECLS do exist such as coagulopathy,lethal chromosomal or congenital anomaly,very preterm b.rth,or very low b.rth weight,b.t many of these limits are b.ing evaluated through further *** guidelines from the past decade vary in recommendations for ECLS use in patients with CDH b.t this therapy appears to have a survival b.nefit in the most severe sub.et of *** outcomes have b.en ob.erved for patients treated at high-volume *** review details the evolving literature surrounding management paradigms for timing of CDH repair for patients receiving preoperative *** recent data support early repair following cannulation to avoid non-repair which is uniformly fatal in this *** ECLS runs are associated with decreased survival,and patient physiology should guide ECLS weaning and eventual decannulation rather than limiting patients to arb.trary run *** of care across centers is a major focus to limit unnecessary costs and improve short-term and long-term outcomes for these complex patients.

关键词： congenital life repair

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胰腺癌相关疼痛的诊疗现状

协和医学杂志 2024年第4期15卷 884-890页

作者：陈思申乐中国医学科学院北京协和医院麻醉科北京100730

疼痛是胰腺癌患者最常见的症状之一。胰腺癌相关疼痛来源多样、机制复杂,严重影响患者生活质量,并对预后造成不良影响,有效的疼痛管理可延长胰腺癌患者的生存期。由于胰腺癌相关疼痛的发病机制尚未阐明,仅部分疼痛管理可基于机制,而大... 详细信息

疼痛是胰腺癌患者最常见的症状之一。胰腺癌相关疼痛来源多样、机制复杂,严重影响患者生活质量,并对预后造成不良影响,有效的疼痛管理可延长胰腺癌患者的生存期。由于胰腺癌相关疼痛的发病机制尚未阐明,仅部分疼痛管理可基于机制,而大部分疼痛的管理则需凭借医师经验。本文从胰腺癌相关疼痛的病理生理机制及治疗策略两方面进行论述,以期为胰腺癌临床镇痛实践提供参考。

关键词：胰腺癌疼痛镇痛

b.b.境中的社交媒体营销战略:研究现状与展望

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北京工商大学学报（社会科学版） 2024年第4期39卷 1-15页

作者：张闯郭乐大连理工大学经济管理学院辽宁大连116024 东北财经大学工商管理学院辽宁大连116025

随着社交媒体的广泛普及和影响力的不断攀升,从事b.b.销的企业亟待了解如何通过有效的社交媒体营销战略获取长久的竞争优势和实现价值最大化。b.b.境中的社交媒体营销战略问题也越来越受到学者们的关注,但目前该领域的研究呈现较为分... 详细信息

随着社交媒体的广泛普及和影响力的不断攀升,从事b.b.销的企业亟待了解如何通过有效的社交媒体营销战略获取长久的竞争优势和实现价值最大化。b.b.境中的社交媒体营销战略问题也越来越受到学者们的关注,但目前该领域的研究呈现较为分散的状态,缺乏对相关文献全面系统的梳理和归纳。通过对209篇中英文文献的回顾和解析,采用社交媒体使用的“前因—战略—结果”综述框架,剖析了b.b.境中社交媒体营销战略的研究现状。基于现有研究不足,未来研究应进一步探究企业营销目标与相关主体动机的协同作用、C端社交媒体用户的动机,重点关注社交销售战略、思想领导力营销战略、影响者营销战略和社交媒体组合战略,以及企业边界人员使用个人社交媒体对企业层面的影响和社交媒体营销战略的“阴暗面”等问题,以推动b.b.境中社交媒体营销战略研究的理论构建与深化。

关键词： b.b.销社交媒体社交媒体互动社交媒体营销营销战略

Non-Hermitian CHSH^(*)Game with a Single Trapped-Ion Qub.t

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Chinese Physics letters 2024年第6期41卷 1-10页

作者：宋潇刘腾边纪陆鹏飞刘泱朱峰罗乐 School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China Shenzhen Research Institute of Sun Yat-Sen University Shenzhen 518057China Quantum Science Center of Guangdong-HongKong-Macao Greater b.y Area Shenzhen 518048China Guangdong Provincial Key Lab.ratory of Quantum Metrology and Sensing Zhuhai 519082China

The Clauser-Horne-Shimony-Holt(CHSH)game provides a captivating illustration of the advantages of quantum strategies over classical *** a recent study,a variant of the CHSH game leveraging a single qub.t system,referred to as the CHSH^(*)game,has b.en *** demonstrate that this mapping relationship b.tween these two games remains effective even for a non-unitary *** we delve into the b.each of Tsirelson’s b.und in a non-Hermitian system,predicting changes in the upper and lower b.unds of the player’s winning prob.b.lity when employing quantum strategies in a single dissipative qub.t *** experimentally explore the impact of the CHSH^(*)game on the player’s winning prob.b.lity in a single trapped-ion dissipative system,demonstrating a violation of Tsirelson’s b.und under the influence of parity-time(PT)*** results contrib.te to a deeper understanding of the influence of non-Hermitian systems on quantum games and the b.havior of quantum systems under PT symmetry,which is crucial for designing more rob.st and efficient quantum protocols.

关键词： quantum system dissipative

Properties of focused Laguerre–Gaussian b.am propagating in anisotropic ocean turb.lence

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Chinese Physics b 2024年第2期33卷 386-393页

作者：王新光马洋斌袁邱杰陈伟王乐赵生妹 College of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Institute of Signal Processing and Transmission Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab.of b.oadb.nd Wireless Communication and Sensor Network Technology(Ministry of Education) Nanjing University of Posts and TelecommunicationsNanjing 210003China National Lab.ratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

We analyze the properties of a focused Laguerre–Gaussian(LG)b.am propagating through anisotropic ocean turb.lence b.sed on the Huygens–Fresnel *** the Rytov approximation theory,we derive the analytical formula of the channel capacity of the focused LG b.am in the anisotropic ocean turb.lence,and analyze the relationship b.tween the capacity and the light source parameters as well as the turb.lent ocean *** is found that the focusing mirror can greatly enhance the channel capacity of the system at the geometric focal plane in oceanic *** results also demonstrate that the communication link can ob.ain high channel capacity b. adopting longer b.am wavelength,greater initial b.am waist radius,and larger numb.r of transmission ***,the capacity of the system increases with the decrease of the mean squared temperature dissipation rate,temperature-salinity contrib.tion ratio and turb.lence outer scale factor,and with the increase of the kinetic energy dissipation rate per unit mass of fluid,turb.lence inner scale factor and anisotropy *** to a Hankel–b.ssel b.am with diffraction-free characteristics and unfocused LG b.am,the focused LG b.am shows superior anti-turb.lence interference properties,which provide a theoretical reference for research and development of underwater optical communication links using focused LG b.ams.

关键词： vortex b.am orb.tal angular momentum focusing mirror anisotropic turb.lence

NiAl和Cu在40CrNi3MoV钢中的析出行为及其对力学性能的影响

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金属学报 2024年第2期60卷 201-210页

作者：梁恩溥徐乐王毛球时捷钢铁研究总院有限公司特殊钢研究院北京100081

为提高40CrNi3MoV钢的力学性能,在40CrNi3MoV钢中添加Al、Cu元素,研究了调质处理后实验用钢中的NiAl、Cu析出行为及其对力学性能的影响。利用SEM、TEM和EDS等手段表征了NiAl和Cu析出相的成分、结构、尺寸和形貌,通过三维原子探针(3DAP)... 详细信息

为提高40CrNi3MoV钢的力学性能,在40CrNi3MoV钢中添加Al、Cu元素,研究了调质处理后实验用钢中的NiAl、Cu析出行为及其对力学性能的影响。利用SEM、TEM和EDS等手段表征了NiAl和Cu析出相的成分、结构、尺寸和形貌,通过三维原子探针(3DAP)对析出相形成元素的分布特征进行表征,对比研究了实验用钢的力学性能。结果表明,只添加Al元素后实验用钢中形成与基体共格的b.-NiAl析出相,这些NiAl相主要在晶界处析出且尺寸较大;进一步添加Cu元素后,析出了与基体共格的b.c结构富Cu相,添加Cu后减少了大尺寸NiAl相在晶界处的析出,促进了晶内纳米级NiAl析出。实验用钢中的NiAl析出相和基体点阵错配度小,对抗拉强度提供了200 MPa强化增量;添加Cu后,均匀分布的细小富Cu相和被细化的NiAl相增加了对位错的阻碍作用,屈服强度进一步提高了200 MPa,然而大量细小高密度的NiAl和Cu析出相降低了拉伸过程中产生裂纹的临界应变,因此与只添加Al元素的实验用钢相比,抗拉强度并未提高。

关键词： 40CrNi3MoV钢 NiAl和Cu析出 3DAP 拉伸强度