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Spherical Polyelectrolyte Brush Nanoreactor:Preparation of Hollow TiO_(2) Nanospheres and Characterization by Small Angle X-Ray Scattering

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Chinese Journal of Polymer Science 2024年第9期42卷 1393-1400,I0009页

作者： Yu-Hua Zhang Zi-Yu Zhang Xin Liu En-Guang Ma jiang-tao Guo Li Li Xu-Hong Guo State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai200237China Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology College of Chemistry and Chemical EngineeringDezhou UniversityDezhou253023China Institute of Bast Fiber Crops&Center of Southern Economic Crops Chinese Academy of Agricultural SciencesChangsha410205China

Titanium dioxide(TiO_(2))hollow nanoparticles present significant potential for photocatalytic applications while their straightforward preparation with precise structure control is still *** work reports the approach to preparing tunable hollow TiO_(2) nanospheres by utilization of spherical polyelectrolyte brushes(SPB)as nanoreactors and *** the preparation,the evolution of the structure was characterized by small angle X-ray scattering(SAXS),and in combination with dynamic light scattering and transmission electron *** formation of TiO_(2) shell within the brush(SPB@TiO_(2))is confirmed by the significant increase of the electron density,and its internal structure has been analyzed by fitting SAXS data,which can be influenced by Titanium precursors and ammonia *** calcining SPB@TiO_(2) in a muffle furnace,hollow TiO_(2) nanospheres are produced,and their transition to the anatase crystal form is triggered,as confirmed by X-ray diffraction *** the advantages of their hollow structure,these TiO_(2) nanospheres exhibit exceptional catalytic degradation efficiency of methylene blue(MB),tetracycline(TC),and 2,4-dichlorophenoxyacetic acid(2,4-D),and also demonstrate excellent recyclability.

关键词： Spherical polyelectrolyte brush Nanoreactor Hollow titanium dioxide X-ray scattering

Upcycling of Poly(butylene adipate-co-terephthalate)into Dual Covalent Adaptable Networks through Chain Breaking-Crosslinking Strategy

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Chinese Journal of Polymer Science 2024年第10期42卷 1505-1513,I0011页

作者： Bin-Bo Wang Rong Huang Xin Wang tao jiang Yi Wang Shuai Du Fa-Lin Li Jin Zhu Song-Qi Ma Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi214122China Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Divisions of Polymers and CompositesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China University of Chinese Academy of Sciences Beijing100049China

Poly(butylene adipate-co-terephthalate)(PBAT),a widely studied biodegradable material,has not effectively addressed the problem of plastic *** into consideration the cost-effectiveness,upcycling PBAT should take precedence over direct composting *** present work adopts a chain breaking-crosslinking strategy,upcycling PBAT into dual covalent adaptable networks(CANs).During the chainbreaking stage,the ammonolysis between PBAT and polyethyleneimine(PEI)established the primary crosslinked ***,styrene maleic anhydride copolymer(SMA)reacted with the hydroxyl group,culminating in the formation of dual covalent adaptable *** contrast to PBAT,the PBAT-dual-CANs exhibited a notable Young's modulus of 239 MPa,alongside an inherent resistance to creep and *** to catalysis from neighboring carboxyl group and excess hydroxyl groups,the PBAT-dual-CANs exhibited fast stress ***,they could be recycled through extrusion and hot-press reprocessing,while retaining their *** straightforward strategy offers a solution for dealing with plastic waste.

关键词： Poly(butylene adipate-co-terephthalate) Dynamic crosslinked networks Chain breaking-crosslinking strategy Upcycle Recycle

Research progress on the development of hepatocyte growth factor/c-Met signaling pathway in gastric cancer:A review

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3397-3409页

作者： Wu-Jie Wei Ya-Li Hong Yi Deng Guan-Liang Wang jiang-tao Qiu Fang Pan Department of Oncology People's Hospital of Chongqing HechuanChongqing 401520China Department of Cardiovascular People's Hospital of Chongqing HechuanChongqing 401520China Intensive Care Unit People's Hospital of Chongqing HechuanChongqing 401520China Department of Gastrointestinal Surgery Beijing Tsinghua Changgung HospitalBeijing 100084China

Hepatocyte growth factor(HGF)and its receptor,c-Met,play important roles in the occurrence,development,and treatment of gastric cancer(GC).This review explored the function of the HGF/c-Met signaling pathway in GC and its potential targeted therapeutic *** one of the most common malignant tumors worldwide,GC has a complex pathogenesis and limited therapeutic ***,a thorough understanding of the molecular mechanism of GC is very important for the development of new therapeutic *** HGF/c-Met signaling pathway plays an important role in the proliferation,migration,and invasion of GC cells and has become a new therapeutic *** review summarizes the current research progress on the role of HGF/c-Met in GC and discusses targeted therapeutic strategies targeting this signaling pathway,providing new ideas and directions for the treatment of GC.

关键词： Targeted therapy Hepatocyte growth factor c-Met Gastric cancer Prognosis assessment Review

Impact of computed tomography/magnetic resonance imaging registration on rehabilitation after percutaneous endoscopic decompression for lumbar stenosis: Retrospective study

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World Journal of Orthopedics 2024年第10期15卷 939-949页

作者： Xiao-Bo Guo Jin-Wei Chen Jun-Yang Liu jiang-tao Jin Department of Orthopedics Jincheng General HospitalJincheng 048006Shanxi ProvinceChina

BACKGROUND Percutaneous endoscopic lumbar decompression(PELD)shows promise for lumbar spinal stenosis(LSS)treatment,but its use is limited by the disease's complexity and procedural *** In this study,the effects of preoperative planning and intraoperative guidance with computed tomography(CT)/magnetic resonance imaging(MRI)registration techniques on PELD for LSS and postoperative rehabilitation outcomes were *** This retrospective study was conducted with data from patients who underwent PELD for LSS between January 2021 and December *** were assigned to preoperative CT/MRI registration and control *** collected included the operative time,length of hospital stay,visual analog scale(VAS)scores for low back and leg pain,and the Japanese Orthopaedic Association(JOA)lumbar spine *** between groups were assessed using Student’s t *** Data from 135 patients(71 in the CT/MRI registration group,64 in the control group)were *** operative time was significantly shorter in the CT/MRI registration group(P=0.007).At 2 months postoperatively,both groups showed significant reductions in VAS leg and low back pain scores(all P<0.001)and improvements in the JOA score(both P<0.001).No complication or death ***,pain and JOA scores were similar between groups(P=0.830,P=0.470,and P=0.287,respectively).At 2 months postoperatively,patients in the CT/MRI registration group reported lower leg and low back pain levels(P<0.001 and P=0.001,respectively)and had higher JOA scores(P=0.004)than did patients in the control *** Preoperative CT/MRI registration for PELD for LSS reduced the operative time and VAS pain scores at 2 months and improved JOA scores,demonstrating enhanced effectiveness and safety.

关键词： Endoscopy Spinal stenosis Lumbar vertebrae Tomography X-Ray computed Magnetic resonance imaging

Tough Polymeric Hydrogels Based on Amino Acid Derivative Mediated Dynamic Metal Coordination Bonds

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Chinese Journal of Polymer Science 2024年第10期42卷 1578-1588,I0014页

作者： Meng Li Meng-Yuan Zhang Wu-Xuan Lei Zhu-Ting Lv Qing-Hua Shang Zheng Zhao jiang-tao Li Yi-Long Cheng Engineering Research Center of Energy Storage Materials and Devices Ministry of EducationSchool of ChemistryXi’an Jiaotong UniversityXi’an710049China Polymer Materials&Engineering Department School of Materials Science&Engineering Chang’an UniversityXi’an710064China School of Electrical Engineering Xi’an Jiaotong UniversityXi’an710049China Department of Nuclear Medicine the First Affiliated Hospital of ChinaXi’an Jiaotong UniversityXi’an710049China

Abstract The development of physically crosslinked hydrogels with excellent mechanical and sensing properties is of importance for expanding the practical applications of intelligent soft hydrogel ***,after copolymerization of hydroxyl-containing amino acid derivative N-acryloyl serine(ASer)with acrylamide(AM),we introduce Zr4+through an immersion strategy to construct metal ion-toughened non-covalent crosslinked hydrogels(with tensile strength of up to 5.73 MPa).It is found that the synergistic coordination of hydroxyl and carboxyl groups with Zr^(4+)substantially increases the crosslinking density of the hydrogels,thereby imparting markedly superior mechanical properties compared to hydroxyl-free Zr^(4+)-crosslinked hydrogels,such as N-acryloyl alanine(AAla)copolymerized with AM hydrogels(with tensile strength of 2.98 MPa)Through the adjustment of the composition of the copolymer and the density of coordination bonds,the mechanical properties of the hydrogels can be modulated over a wide ***,due to the introduction of metal ions and the dynamic nature of coordination bonds,the hydrogels also exhibit excellent sensing performance and good self-recovery properties,paving the way for the development of flexible electronic substrates with outstanding comprehensive performances.

关键词： Hydrogel Amino acid Metal coordination Mechanical performance Flexible sensor

Latest progress for 3GPP ISAC channel modeling standardization

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Science China(Information Sciences) 2024年第11期67卷 357-358页

作者： Yuxiang ZHANG Jianhua ZHANG Yuanpeng PEI Yameng LIU tao jiang State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Future Research Laboratory China Mobile Research Institute

Integrated sensing and communication(ISAC) is regarded as a promising technology for sixth-generation(6G) *** channel modeling is essential for designing and evaluating the performance of ISAC systems. In December 2023, the 3rd Generation Partnership Project(3GPP)established a new industry specification group dedicated to ISAC. The group's objective is to research ISAC channel modeling, laying the technical foundations for 6G standardization. Compared to the traditional 5G communication channel, 6G ISAC channel requires accurate modeling of new properties.

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计及安装角的六自由度平台虎克铰干涉计算模型

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吉林大学学报（工学版） 2024年第6期54卷 1519-1527页

作者：刘洋江涛湖南师范大学工程与设计学院长沙410081

为了拓展六自由度平台的可达空间,提出了计及安装角参数的虎克铰干涉计算方法。根据虎克铰与相邻结构之间的位姿关系,对上、下铰座分别建立了计及安装角的虎克铰转角计算模型。采用仿真法求解了斜棱柱虎克铰的转角范围,拟合了描述虎克... 详细信息

为了拓展六自由度平台的可达空间,提出了计及安装角参数的虎克铰干涉计算方法。根据虎克铰与相邻结构之间的位姿关系,对上、下铰座分别建立了计及安装角的虎克铰转角计算模型。采用仿真法求解了斜棱柱虎克铰的转角范围,拟合了描述虎克铰工作空间的非参数模型,建立了斜棱柱虎克铰干涉判定条件。通过分析动平台平动轨迹,探讨了铰座运动与安装角之间的变化规律。将虎克铰的干涉计算与六自由度平台的运动学反解结合,通过动平台在极限位置的运动试验,验证了虎克铰干涉计算模型在拓展六自由度平台极限位姿中的有效性。

关键词：机械设计及理论六自由度平台铰座约束避障工作空间

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神经稳态理论在脑胶质瘤治疗中的实践

中华口腔医学杂志 2024年第2期59卷 145-148页

作者：江涛北京市神经外科研究所分子病理室北京100070 首都医科大学附属北京天坛医院神经外科北京100070

脑胶质瘤是成人最常见的颅内原发恶性肿瘤,常侵犯重要脑功能区,对传统治疗不敏感,现有手段治疗后致死致残率高,亟需新疗法新理念的探索和应用。神经稳态对于机体正常生理功能的维持至关重要,神经稳态的失衡将导致脑胶质瘤的发生和进展... 详细信息

脑胶质瘤是成人最常见的颅内原发恶性肿瘤,常侵犯重要脑功能区,对传统治疗不敏感,现有手段治疗后致死致残率高,亟需新疗法新理念的探索和应用。神经稳态对于机体正常生理功能的维持至关重要,神经稳态的失衡将导致脑胶质瘤的发生和进展。在脑胶质瘤的临床诊疗过程中,除对肿瘤进行处理外,还应识别神经稳态的失衡,并在术前、术中和术后的治疗中进行充分干预,以达到最佳的治疗效果。神经稳态理论在脑胶质瘤治疗中的探索、发展和应用,将有望改变现有诊疗模式,为脑胶质瘤的临床治疗提供全新的思路。

关键词：神经胶质瘤稳态应变康复预后肿瘤治疗方案

Deep learning-based optical aberration estimation enables offline digital adaptive optics and super-resolution imaging

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Photonics Research 2024年第3期12卷 474-484页

作者： CHANG QIAO HAOYU CHEN RUN WANG tao jiang YUWANG WANG DONG LI Department of Automation Tsinghua UniversityBeijing 100084China Institute for Brain and Cognitive Sciences Tsinghua UniversityBeijing 100084China National Laboratory of Biomacromolecules New Cornerstone Science LaboratoryCAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China

Optical aberrations degrade the performance of fluorescence *** adaptive optics(AO)leverages specific devices,such as the Shack–Hartmann wavefront sensor and deformable mirror,to measure and correct optical ***,conventional AO requires either additional hardware or a more complicated imaging procedure,resulting in higher cost or a lower acquisition *** this study,we proposed a novel space-frequency encoding network(SFE-Net)that can directly estimate the aberrated point spread functions(PSFs)from biological images,enabling fast optical aberration estimation with high accuracy without engaging extra optics and image *** showed that with the estimated PSFs,the optical aberration can be computationally removed by the deconvolution ***,to fully exploit the benefits of SFE-Net,we incorporated the estimated PSF with neural network architecture design to devise an aberration-aware deeplearning super-resolution model,dubbed *** demonstrated that the combination of SFE-Net and SFT-DFCAN enables instant digital AO and optical aberration-aware super-resolution reconstruction for live-cell imaging.

关键词： optics resolution enable