检索结果-南通市图书馆

Creep-Resistant Covalent Adaptable Networks with Excellent SelfHealing and Reprocessing Performance via Phase-Locked Dynamic Covalent Benzopyrazole-Urea Bonds

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第10期42卷 1545-1556,I0013页

作者： Miao Xie xiao-Rong Wang zhan.Hua Wang He-Sheng Xia State Key Laboratory of Polymer Materials Engineering Polymer Research InstituteSichuan UniversityChengdu610065China School of Petrochemical Engineering Liaoning Petrochemical UniversityFushun113001China

Covalent adaptive networks(CANs)are capable of undergoing segment rearrangement after being heated,which endows the materials with excellent self-healing and reprocessing performance,providing an efficient solution to the environment pollution caused by the plastic *** main challenge remains in developing CANs with both excellent reprocessing performance and creep-resistance *** this study,a series of CANs containing dynamic covalent benzopyrazole-urea bonds were developed based on the addition reaction between benzopyrazole and isocyanate *** calculation confirmed that relatively low dissociation energy is obtained through undergoing a five-member ring transition state,confirming excellent dynamic property of the benzopyrazole-urea *** verified by the FTIR results,this nice dynamic property can be well maintained after incorporating the benzopyrazole-urea bonds into polymer *** self-healing and reprocessing performance is observed by the 3-ABP/PDMS elastomers owing to the dynamic benzopyrazole-urea *** separation induced by the aggregation of the hard segments locked the benzopyrazole-urea bonds,which also makes the elastomers display excellent creep-resistance *** hard phase locking strategy provides an efficient approach to design CANs materials with both excellent reprocessing and creep-resistance performance.

关键词： Covalent adaptive networks Self-healing polymer Dynamic covalent bond

维普期刊数据库

New clinical trial design in precision medicine:discovery,development and direction

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第4期9卷 1293-1321页

作者： xiao-Peng Duan Bao-Dong Qin xiao-Dong Jiao Ke Liu zhan.Wang Yuan-Sheng Zang Department of Medical Oncology Changzheng HospitalNaval Medical UniversityShanghaiChina

In the era of precision medicine,it has been increasingly recognized that individuals with a certain disease are complex and different from each *** to the underestimation of the significant heterogeneity across participants in traditional"one-sizefits-all"trials,patient-centered trials that could provide optimal therapy customization to individuals with specific biomarkers were developed including the basket,umbrella,and platform trial designs under the master protocol *** recent years,the successive FDA approval of indications based on biomarker-guided master protocol designs has demonstrated that these new clinical trials are ushering in tremendous *** the rapid increase in the number of basket,umbrella,and platform trials,the current clinical and research understanding of these new trial designs,as compared with traditional trial designs,remains *** majority of the research focuses on methodologies,and there is a lack of in-depth insight concerning the underlying biological logic of these new clinical trial ***,we provide this comprehensive review of the discovery and development of basket,umbrella,and platform trials and their underlying logic from the perspective of precision ***,we discuss future directions on the potential development of these new clinical design in view of the"Precision Pro","Dynamic Precision",and"Intelligent Precision".This review would assist trial-related researchers to enhance the innovation and feasibility of clinical trial designs by expounding the underlying logic,which be essential to accelerate the progression of precision medicine.

关键词： clinical approval successive

A comprehensive survey of federated transfer learning: challenges, methods and applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2024年第6期18卷 186356-186356页

作者： GUO Wei ZHUANG Fuzhen zhan.xiao TONG Yiqi DONG Jin Institute of Artificial Intelligence Beihang University SKLSDE School of Computer Science Beihang University School of Computer Science and Technology Shandong University Beijing Academy of Blockchain and Edge Computing

Federated learning (FL) is a novel distributed machine learning paradigm that enables participants to collaboratively train a centralized model with privacy preservation by eliminating the requirement of data sharing. In practice, FL often involves multiple participants and requires the third party to aggregate global information to guide the update of the target participant. Therefore, many FL methods do not work well due to the training and test data of each participant may not be sampled from the same feature space and the same underlying distribution. Meanwhile, the differences in their local devices (system heterogeneity), the continuous influx of online data (incremental data), and labeled data scarcity may further influence the performance of these methods. To solve this problem, federated transfer learning (FTL), which integrates transfer learning (TL) into FL, has attracted the attention of numerous researchers. However, since FL enables a continuous share of knowledge among participants with each communication round while not allowing local data to be accessed by other participants, FTL faces many unique challenges that are not present in TL. In this survey, we focus on categorizing and reviewing the current progress on federated transfer learning, and outlining corresponding solutions and applications. Furthermore, the common setting of FTL scenarios, available datasets, and significant related research are summarized in this survey.

关键词： federated transfer learning federated learning transfer learning survey

Introducing electrolytic electrochemical polymerization for constructing protective layers on Ni-rich cathodes of Li-ion batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第6期43卷 2536-2545页

作者： Lin-Tao Dou Bei Li Hao-Long Nie Dong-Dong xiao Chao-Qun Shang xiao-Min Wang zhan.Hui zhan. Katerina E.Aifantis Pu Hu School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan 430205China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101400China Department of Mechanical and Aerospace Engineering University of FloridaGainesvilleFL 32603USA

LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)is the most promising cathode for high-energy Li-ion batteries,despite its poor cycling stability that originates from the reactions that occur with the ***,to solve this interfacial issue,a facile electrolytic electrochemical polymerization process was introduced in this paper,and a uniform conductive electrolyte interface(polyaniline)was successfully constructed on the surface of the NCM811 porous electrode(PANI-NCM),which facilitated the charge transfer during charge/*** side reactions at the interface between the cathode and the electrolyte are suppressed,and thereby,the cycling performance and rate capability are considerably ***-NCM delivers an initial capacity of 157.2 mAh·g^(-1)as well as excellent cyclability(capacity retention of 88%after 500 cycles at 2C),whereas the capacity of the bare NCM811 has dropped to 31.3 mAh·g^(-1).In addition,polypyrrole and polythiophene also can be formed through electrolytic electrochemical polymerization process,which provides a practicable tactic to modify the interfacial stability of cathodes for high-energy Li-ion batteries.

关键词： Lithium-ion battery Ni-rich cathode In-situ polymerization Conductive polymer Electrochemical performance

维普期刊数据库

A New Species of the Genus Boulenophrys(Anura,Megophryidae)from Eastern Guangdong,China

在线全文

学校读者我要写书评

暂无评论

Asian Herpetological Research 2024年第1期15卷 12-21页

作者： Zhaochi ZENG Jian WANG Honghui CHEN Weiwen xiao Binbin zhan.Yuanhang LI Shishi LIN Guangdong Polytechnic of Environmental Protection Engineering Foshan 528216GuangdongChina

A new horned toad species,Boulenophrys elongata ***.,is described from ***,Huidong County,eastern Guangdong,*** new species is phylogenetically closest to ***,which is restricted to the east of the Pearl River Estuary(i.e.,Shenzhen City and Hong Kong SAR).The new species can be distinguished from all recognized congeners by a combination of morphological characters and genetic divergences in the combined mitochondrial 16S,12S and CO1 *** recommend the new species be listed as Data Deficient(DD)in the IUCN categorization,pending further investigation.

关键词： Boulenophrys elongata sp.nov. Lianhua Mountains molecular phylogeny morphology taxonomy

维普期刊数据库

Temperature/electric field induced photoluminescence-modulation effect in dysprosium-doped barium titanate ferroelectric ceramics

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2024年第5期10卷 1117-1125页

作者： Lei Xia xiao Liu zhan.Mao Yanbin Cai Jing Zhu Jiyang Xie Wanbiao Hu Yunnan Key Laboratory of Electromagnetic Materials and Devices National Center for International Research on Photoelectric and Energy MaterialsSchool of Materials and EnergyYunnan UniversityKunming650091China Electron Microscopy Center Yunnan UniversityKunming650091China University of Science and Technology of China Hefei230026China

Lanthanide(Ln^(3+))based ferroelectric phosphors,with an integration of PL emission and ferroelectric effect,are unveiling an exciting realm of possibilities for multifunctional ferroelectric-optic ***,how the ferroelectric host enables the tuning on the PL emissions through modulating the local structure(e.g.,lattice site,symmetry,strains etc.)of the Ln^(3+)activator is not established *** this work,a luminescent-ferroelectric material,***^(3+)doped BaTiO_(3) ceramic(Ba_(1–x)Dy_(x)TiO_(3)(x=0–0.07),abbr:BTO:Dy^(3+)),was explored to address the aforementioned *** BTO:Dy^(3+)ceramics were synthesized by a solid-state reaction *** crystal structure,photoluminescence(PL)and electric properties(dielectric constant,ferroelectric hysteresis and piezoelectric hysteresis loop)were systematically *** BTO:Dy^(3+)ceramics show two predominant emission peaks,corresponding to the blue magnetic dipole transition(477 nm,4F_(7/2)→6H_(15/2))and yellow electric dipole transition(573 nm,4F_(7/2)→6H_(13/2)),the intensity ration of which can be modulated by the ferroelectric polarization that causes the slight lattice *** a polarization-emission modulation combining with the Dy3+doping could accelerate the color change,from yellow to blue,which is characterized to detect the phase transition,with a method and mechanism were proposed,that is,the phase change is reflected by the PL characteristic peak intensity ***,the current results offer a convenient photoluminescence method for detecting the ferroelectric phase transition and a feasible approach to study the interaction between the photoluminescence and polarization in ferroelectric materials,for providing new insights for the development of multifunctional materials.

关键词： Photoluminescence Barium titanate Modulation Ferroelectric ceramics

Clinical efficacy and mechanism study of mid-frequency anti-snoring device in treating moderate obstructive sleep apnea-hypopnea syndrome

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第5期12卷 942-950页

作者： Bao Qian zhan.Jun Chen Yong-Sheng Wang xiao-Yan Hu xiao-Biao Hu Yong-Hua Zheng Pulmonary Medicine Shanghai Jinshan Tinglin HospitalShanghai 201505China Radiology Medicine Shanghai Jinshan Tinglin HospitalShanghai 201505China

BACKGROUND Obstructive sleep apnea-hypopnea syndrome(OSAHS)is primarily caused by airway obstruction due to narrowing and blockage in the nasal and nasopha-ryngeal,oropharyngeal,soft palate,and tongue base *** mid-frequency anti-snoring device is a new technology based on sublingual nerve *** principle is to improve the degree of oropharyngeal airway stenosis in OSAHS patients under mid-frequency wave ***,there is a lack of clinical application and imaging *** We selected 50 patients diagnosed with moderate OSAHS in our hospital between July 2022 and August *** underwent a 4-wk treatment regimen involving the mid-frequency anti-snoring device during nighttime *** the treatment,we monitored and assessed the sleep apnea quality of life index and Epworth Sleepiness Scale ***,we performed computed tomo-graphy scans of the oropharynx in the awake state,during snoring,and while using the mid-frequency anti-snoring ***-sectional area measurements in different states were taken at the narrowest airway point in the soft palate posterior and retrolingual *** Compared to pretreatment measurements,patients exhibited a significant reduction in the apnea-hypopnea index,the percentage of time with oxygen saturation below 90%,snoring frequency,and the duration of the most prolonged apnea *** lowest oxygen saturation showed a notable increase,and both sleep apnea quality of life index and Epworth Sleepiness Scale scores *** computed tomography scans revealed that in OSAHS patients cross-sectional areas of the oropharyngeal airway in the soft palate posterior area and retrolingual area decreased during snoring compared to the awake ***,during mid-frequency anti-snoring device treatment,these areas increased compared to *** The mid-frequency anti-snoring device demonstrates the potential to enhance various sleep parameters in pat

关键词： Mid-frequency anti-snoring device Obstructive sleep apnea-hypopnea syndrome Sleep monitoring Oropharyngeal computed tomography Curative effect

Artificial Water Channel Promoting Depolymerization of Actin Filaments to Trigger Cancer Cell Apoptosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2024年第12期42卷 1335-1340页

作者： Lei zhan. Yin-Gui Cao Ting Fan Jjiatong Zhao Yong-Hong Fu Qi xiao zhan.Ting Li Yunfeng Wang Bo xiao Jun-Li Hou Department of Chemistry Fudan University220 Handan RoadShanghai 200433China State Key Laboratory of Silkworm Genome Biology Cllege of SericultureTextileand Biomass Sciences InstitutionSouthwest UniversityChongqing400715China ENT Institute and Otorhinolaryngology Department of Eye&ENT Hospital Fudan UniversityShanghai 200031 Fudan International School 325 Guoquan RoadShanghai 200433China

Actin filaments play important physiological functions,which have become potential targets of antitumor *** chemicals to intervene their polymerization-depolymerization dynamics would generate new strategies for designing antitumor *** this report,an artificial water channel appending acetazolamide moiety,a ligand that can selectively bind to carbonic anhydrase IX,has been prepared.

关键词： Artificial water channel Actin depolymerization Cell apoptosis Nanostructures Molecular recognition Supramolecular chemistry

Generative AI for visualization: State of the art and future directions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Visual Informatics 2024年第2期8卷 43-66页

作者： Yilin Ye Jianing Hao Yihan Hou zhan.Wang Shishi xiao Yuyu Luo Wei Zeng The Hong Kong University of Science and Technology(Guangzhou) GuangzhouGuangdongChina The Hong Kong University of Science and TechnologyHong KongChina

Generative AI(GenAI)has witnessed remarkable progress in recent years and demonstrated impressive performance in various generation tasks in different domains such as computer vision and computational *** researchers have attempted to integrate GenAI into visualization framework,leveraging the superior generative capacity for different ***,recent major breakthroughs in GenAI like diffusion models and large language models have also drastically increased the potential of *** a technical perspective,this paper looks back on previous visualization studies leveraging GenAI and discusses the challenges and opportunities for future ***,we cover the applications of different types of GenAI methods including sequence,tabular,spatial and graph generation techniques for different tasks of visualization which we summarize into four major stages:data enhancement,visual mapping generation,stylization and *** each specific visualization sub-task,we illustrate the typical data and concrete GenAI algorithms,aiming to provide in-depth understanding of the state-of-the-art GenAI4VIS techniques and their ***,based on the survey,we discuss three major aspects of challenges and research opportunities including evaluation,dataset,and the gap between end-to-end GenAI methods and *** summarizing different generation algorithms,their current applications and limitations,this paper endeavors to provide useful insights for future GenAI4VIS research.

关键词： Visualization Generative AI