检索结果-南通市图书馆

Advances in the early diagnosis of hepatocellular carcinoma

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2020年第3期7卷 308-319页

作者： weiyi Wang chao wei Xiamen Amplly Bio-engineering Co. LtdXiamenPR China

Hepatocellular carcinoma(HCC)is one of the most prevalent cancers *** contrast to the declining death rates observed for all other common cancers such as breast,lung,and prostate cancers,the death rates for HCC continue to increase by^2e3%per year because HCC is frequently diagnosed late and there is no curative therapy for an advanced *** early diagnosis of HCC is truly a big *** the past years,the early diagnosis of HCC has relied on surveillance with ultrasonography(US)and serological assessments of alpha-fetoprotein(AFP).However,the specificity and sensitivity of US/AFP is not satisfactory enough to detect early onset *** technological advancements offer hope for early HCC ***,we review the progress made in HCC diagnostics,with a focus on emerging imaging techniques and biomarkers for early disease diagnosis.

关键词： Biomarker Early diagnosis Hepatocellular carcinoma Imaging Liquid biopsy

A minimal thrust vectoring rotor with six degree of freedom:Design and analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IET Cyber-Systems and Robotics 2021年第1期3卷 89-102页

作者： wei Qiu chao Xu State Key Laboratory of Industrial Control Technology Zhejiang UniversityHangzhouChina

This article presents a minimal thrust vectoring rotor(mTVR)with 6-DoF motion *** mTVR is equipped with only three tiltable thrust units that deploy the coaxial counter-propellers design for generating pure ***,the mTVR is able to perform 6-DoF flight with decoupled translation and rotation based on the full rank Jacobian *** geometry of the mTVR is optimised first,by studying the condition number of the Jacobian matrix that contains five geometry *** overall system is then carefully modelled based on the actual hardware configuration of the mTVR prototype,including the coaxial counter-propeller thruster,the high-voltage servo for tilting,and the detailed multi-rigid body motion dynamics of the ***,the output envelop and dynamic response of the 6-DoF actuator performance are evaluated.A 6-DoF motion controller with disturbance rejection is designed and tested on a specialised multifunctional software platform developed for the *** controller shows good stability in regular,even aggressive operation of the vehicle.

关键词： hardware thrust equipped

Neuroprotection by resveratrol-glucuronide and quercetin-glucuronide via binding to polyphenol-and glycosaminoglycan-binding sites in the laminin receptor

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 819-820页

作者： Rayudu Gopalakrishna Jennifer Aguilar Emily lee William J.Mack Department of Integrative Anatomical Sciences Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCAUSA Department of Neurological Surgery Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCAUSA

The dietary polyphenolic compounds resveratrol and quercetin prevent neurodegenerative diseases in experimental models;however, they reach the brain only in nanomolar concentrations in the glucuronidated and sulfated ... 详细信息

关键词： resveratrol molar dated

Global research status and trends of somatic symptom disorder: A bibliometric study

在线全文

学校读者我要写书评

暂无评论

World Journal of Psychiatry 2025年第1期15卷 168-178页

作者： chao Yang Kun Zhang Qian Wang Shuai Wang Huan Li Kai Zhang Department of Psychiatry Beijing Luhe HospitalCapital Medical UniversityBeijing 100001China Department of Psychiatry Chaohu Hospital of Anhui Medical UniversityHefei 238000Anhui ProvinceChina School of Medicine Jiangxi University of TechnologyNanchang 510001Jiangxi ProvinceChina School of Public Health Zhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina

BACKGROUND With the growing scholarly and clinical fascination with somatic symptom dis-order(SSD),a bibliometric analysis is *** To conduct a bibliometric analysis to investigate the current status and frontiers of *** The documents related to SSD are obtained from the web of science core collection database(WoSCC),and VOSviewer 1.6.16 from January 1,2000 to December 31,2023,and the WoSCC’s literature analysis wire were used to conduct the biblio-metric *** A total of 567 documents related to SSD were included,and 2325 authors across 947 institutions from 57 countries/regions have contributed to SSD research,published in 277 *** most productive author,institution,country and journal were Löwe B,University of Hamburg,Germany,and Journal of Psycho-somatic Research *** first high-cited document was published in the Journal of Psychosomatic Research in 2013 by Dimsdale JE and colleagues,which explored the rationale behind the SSD diagnosis introduction in diagnostic and statistical manual of mental *** In conclusion,the main research hotspots and frontiers in the field of SSD are validity and reliability of the SSD criteria,functional impairment of SSD,and the treatment for *** high-quality studies are needed to assess the diagnosis and treatment of SSD.

关键词： Somatic symptom disorder Validity and reliability Functional impairment Treatment Bibliometric analysis

A novel robust aerodynamic optimization technique coupled with adjoint solvers and polynomial chaos expansion

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 Aeronautics 2022年第10期35卷 35-55页

作者： wei ZHANG Qiang WANG Fanzhi ZENG chao YAN National Key Laboratory of Computational Fluid Dynamics Beihang UniversityBeijing 100083China Aerospace Times Feipeng Company Limited China Academy of Aerospace Electronics TechnologyKunshan 215000China China Academy of Aerospace Aerodynamics Beijing 100074China

Uncertainty is common in the life cycle of an aircraft, and Robust Aerodynamic Optimization(RAO) that considers uncertainty is important in aircraft design. To avoid the curse of dimensionality in surrogate-based optimization, this study proposes an adjoint RAO technique called “R-Opt”. Polynomial chaos Expansion(PCE) is coupled with the R-Opt technique to quantify uncertainty in the responses of the target(including its mean and standard deviation). Only one process of PCE model construction is required in each iteration, and the gradients of uncertainty can be inferred via chain rules. The proposed method is more efficient than prevalent methods,and avoids the problem of a disagreement over the best PCE basis from among a number of PCE models(especially in case of sparse PCE). It also supports the application of sparse *** benchmark tests and two airfoil cases were used to verify R-Opt, and the optimal solutions were deemed to be robust. It improved the mean aerodynamic performance and reduced the standard deviation of the target.

关键词： Adjoint technique Polynomial chaos expansion Robust design Uncertainty analysis Uncertainty gradient propagation

Our DREAM of defeating cancer: a summary of the 3rd Guangzhou International Symposium on Oncology

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer 2014年第3期33卷 125-132页

作者： wei-wei Xiao chao-Nan Qian Department of Radiation Oncology Sun Yat-sen University Cancer Center State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer Medicine Department of Nasopharyngeal Carcinoma Sun Yat-sen University Cancer Center

Every 6 seconds,someone dies from cancer somewhere in the *** 13 seconds,a cancer patient dies in *** is currently the biggest threat to life around the world and a critical burden to *** address this problem,it is especially important for scientists and physicians to remain abreast of cutting edge research and progress in the treatment of this *** 3rd Guangzhou International Symposium on Oncology

关键词： Guangzhou seconds targeted someone metastasis currently threat colorectal chemotherapy DREAM

Exploring associations between streetscape factors and crime behaviors using Google Street View images

在线全文

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2022年第4期16卷 45-58页

作者： Mingyu Deng wei Yang chao Chen Chenxi Liu School of Computer Science Chongqing UniversityChongqing400044China School of Management Science and Real Estate Chongqing UniversityChongqing400044China State Key Laboratory of Mechanical Transmission Chongqing UniversityChongqing400044China

Understanding the influencing mechanism of the urban streetscape on crime is fairly important to crime prevention and urban ***,the development of deep learning technology and big data of street view images,makes it possible to quantitatively explore the relationship between streetscape and *** study computed eight streetscape indexes of the street built environment using Google Street View images ***,the association between the eight indexes and recorded crime events was revealed with a poisson regression model and a geographically weighted poisson regression *** experiment was conducted in downtown and uptown Manhattan,New *** regression results show that the influences of Motorization Index on crimes are significant and positive,while the effects of the Light View Index and Green View Index on crimes depend heavily on the socioeconomic *** a local perspective,the Pedestrian Space Index,Green View Index,Light View Index and Motorization Index have a significant spatial influence on crimes,while the same visual streetscape factors have different effects on different streets due to the combination differences of socioeconomic,cultural and streetscape *** key streetscape elements of a given street that affect a specific criminal activity can be identified according to the strength of the *** results provide both theoretical and practical implications for crime theories and crime prevention efforts.

关键词： crime Google Street View streetscape spatial analysis geographically weighted poisson regression

Controllable synthesis of biomimetic wood stem nanoporous high entropy oxides catalysts for oxygen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Nano Research 2025年第1期18卷 107-117页

作者： wei Wang weiqi Wang Huihui Wang Xing Lu Jinwen Zhang Yunzhuo Lu School of Materials Science and Engineering Dalian Jiaotong UniversityDalian 116028China School of Intelligence and Electronic Engineering Dalian Neusoft University of InformationDalian 116023China Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment Guangzhou Maritime UniversityGuangzhou 510725China

Bubbles generated during the oxygen evolution reaction(OER)in water splitting readily adhere to the electrode surface,thereby impeding contact between the electrolyte and the active sites,thereby increasing the ***,it is imperative to elucidate the bubble release behavior and engineer electrodes that facilitate faster bubble *** this study,inspired by the wood stem of the Norway spruce,we synthesized a gradient nanoporous high-entropy oxide(GNP-HEO)electrode with a controllable pore *** GNP-HEO,featuring a well-controlled gradient in pore size,is achieved through a straightforward strategy combining selective laser melting with selective phase *** unique gradient nanoporous structure not only facilitates bubble release but also diminishes the bubble shielding effect in OER,thereby enhancing electrocatalytic *** affect interaction of Al,Co,Cr,Fe,and Ni,coupled with the gradient nanoporous structure,yields exceptional OER performance,evidenced by an overpotential of 250 mV at a current density of 50 mA/cm^(2) and a Tafel slope of 38.0 mV/dec in 1 M *** functional theory calculations confirm that the GNPHEO adheres to the adsorbate evolution mechanism reaction pathway and exhibits significant *** work highlights a promising approach for the design and synthesis of high-performance OER electrocatalysts.

关键词： oxygen evolution reaction high-entropy oxides selective phase dis-solution selective laser melting gradient nanoporous

Gravity-Based Kinetostatic Modeling of Parallel Manipulators Using Screw Theory

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 Mechanical Engineering 2023年第6期36卷 73-86页

作者： chao Yang Fengli Huang wei Ye Qiaohong Chen College of Mechanical and Electrical Engineering Jiaxing UniversityJiaxing 314001China National and Local Joint Engineering Research Center of Reliability Analysis and Testing for Mechanical and Electrical Products Zhejiang Sci-Tech UniversityHangzhou 310018China School of Computer Science and Technology Zhejiang Sci-Tech UniversityHangzhou 310018China

The pose accuracy of parallel manipulators(PMs)is a key index to measure their *** the grav-ity-based kinetostatic model of a parallel robot provides an important basis for its error composition and accuracy *** this paper,a kinetostatic modeling approach that takes real gravity distribution into consideration is proposed to analyze the influence of gravity on the infinitesimal twist and actuator forces of ***,the duality of the twist screw and constraint wrenches are used to derive the gravity-attached constraint wrenches independent of the external load and the limb stiffness matrix corresponding to the kinematics-based constraint ***-ond,the gravity model of the mechanism is established based on the screw theory and the principle of virtual ***,the analytical formulas of the infinitesimal twist and the actuator force of PMs are obtained,and the influences of the external load,platform gravity,and rod gravity on the stiffness of the mechanism are *** non-overconstrained 3RPS and overconstrained 2PRU-UPR PMs are taken as examples to verify the proposed *** research proposes a methodology to analyze the infinitesimal deformation of the mechanism under the influence of gravity.

关键词： Parallel manipulator Kinetostatic model Gravity Screw theory