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High-entropy chemistry stabilizing spinel oxide(CoNiZnXMnLi)_(3)O_(4)(X=Fe,Cr)for high-performance anode of Li-ion batteries

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Rare Metals 2022年第4期41卷 1265-1275页

作者： Kang-Hui Tian Chan-Qin Duan Qun Ma Xing-Long Li zhi-yuan wang Hong-Yu Sun Shao-Hua Luo Dan wang Yan-Guo Liu School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Key Laboratory of Dielectric and Electrolyte Functional Materials Qinhuangdao 066004China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004China

High entropy oxides(HEOs),as a new type of single-phase multielement solid solution materials,have shown many attractive features and promising application prospect in the energy storage ***,six-element HEOs(CoNiZnFeMnLi)_(3)O_(4) and(CoNiZnCrMnLi)_(3)O_(4) with spinel structure are successfully prepared by con-ventional solid-phase method and present outstanding lithium storage performances due to the synergy effect of various electrochemically active elements and the entropy *** contrast,(CoNiZnFeMnLi)_(3)O_(4) delivers higher initial discharge specific capacity of 1104.3 mAh·g^(−1),better cycle stability(84%capacity retention after 100 cycles at 100 mA·g^(−1)) and rate performance(293 mAh·g^(−1)at 2000 mA·g^(−1))in the ***,the full-cell assembled with(CoNiZnFeMnLi)_(3)O_(4) and LiCoO_(2)provides a reversible specific capacity of 260.2 mAh·g^(−1)after 100 cycles at 500 mA·g^(−1).Ex situ X-ray diffraction reveals the electrochemical reaction mechanism of HEOs(CoNiZnFeMnLi)_(3)O_(4),and the amorphous phase and the large amount of oxygen vacancies were obtained after the initial discharge process,which are responsible for the excellent cycle and rate *** research puts forward fresh insights for the development of advanced energy storage materials for high-performance batteries.

关键词： High entropy oxides Spinel structure Anode Lithium-ion batteries

Characterizations and Photothermal Properties of Narrow Bandgap Conjugated Polymer Nanoparticles

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Chinese Journal of Polymer Science 2020年第8期38卷 814-818,I0005页

作者： Yu-Lin Zhang Jun-Tao Ren Huai-Yu Gao Jia-Wei Liu Wen-Jie Xia Wen-Qiang Qiao zhi-yuan wang State Key Laboratory of Fine Chemicals Department of Polymer Science&MaterialsSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022China Department of Chemistry Carleton UniversityOntario K1S 5B6Canada

Photothermal therapy(PTT)is a minimally invasive treatment that kills cancer cells by converting photon energy into *** past few decades have witnessed the booming development of photothermal materials,mainly focusing on precious metal nanomaterials and carbon nanomaterials,such as nanogold and silver and nanocarbon materials for near-infrared(NIR)light-triggered *** precious metals are expensive and potentially harmful to humans,exploration and development of a new type of photothermal materials has become a research hotspot in this ***,we report narrow bandgap conjugated polymer nanoparticles(PDPP NPs)based on pyrrolo[3,4-c]pyrrole-1,4-dione(DPP)with intense NIR absorption at 900 nm,as well as a photothermal energy conversion efficiency of 75%.This polymer nanoparticle is essentially non-toxic,as the cell viability of mouse remained more than 90%,even when the concentration of PDPP NPs was at 0.5 mg·mL^-1.

关键词： Conjugated polymer Nanoparticle Photothermal property Biotoxicity

Pulsed arterial spin labeling effectively and dynamically observes changes in cerebral blood flow after mild traumatic brain injury

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Neural Regeneration Research 2016年第2期11卷 257-261页

作者： Shu-ping Peng Yi-ning Li Jun Liu zhi-yuan wang Zi-shu Zhang Shun-ke Zhou Fang-xu Tao zhi-xue Zhang Department of Radiology Second Xiangya Hospital Central South University Changsha Hunan Province China Hunan Cancer Hospital Changsha Hunan Province China

Cerebral blood flow is strongly associated with brain function, and is the main symptom and diagnostic basis for a variety of encephalopathies. However, changes in cerebral blood flow after mild traumatic brain injury remain poorly understood. This study sought to observe changes in cerebral blood flow in different regions after mild traumatic brain injury using pulsed arterial spin labeling. Our results demonstrate maximal cerebral blood flow in gray matter and minimal in the white matter of patients with mild traumatic brain injury. At the acute and subacute stages, cerebral blood flow was reduced in the occipital lobe, parietal lobe, central region, subcutaneous region, and frontal lobe. Cerebral blood flow was restored at the chronic stage. At the acute, subacute, and chronic stages, changes in cerebral blood flow were not apparent in the insula. Cerebral blood flow in the temporal lobe and limbic lobe diminished at the acute and subacute stages, but was restored at the chronic stage. These findings suggest that pulsed arterial spin labeling can precisely measure cerebral blood flow in various brain regions, and may play a reference role in evaluating a patient＇s condition and judging prognosis after traumatic brain injury.

关键词： nerve regeneration MRI pulsed arterial spin labeling technique cerebral blood flow mild traumatic brain injury GlasgowComa Scale white matter gray matter CT neural regeneration

High-precision nonisothermal transient wellbore drift flow model suitable for the full flow pattern domain and full dip range

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Petroleum Science 2023年第1期20卷 424-446页

作者： Wen-Qiang Lou Da-Lin Sun Xiao-Hui Sun Peng-Fei Li Ya-Xin Liu Li-Chen Guan Bao-Jiang Sun zhi-yuan wang Offshore Petroleum Engineering Research Center School of Petroleum EngineeringChina University of Petroleum(East China)Qingdao266580ShandongChina School of Petroleum Engineering Yangtze UniversityWuhan430199HubeiChina Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering(Yangtze University) Wuhan430199HubeiChina College of Computer Science and Technology China University of Petroleum(East China)Qingdao266580ShandongChina Department of Petroleum Engineering University of TulsaTulsaUnited States

A reliable multiphase flow simulator is an important tool to improve wellbore integrity and production *** develop a multiphase flow model with high adaptability and high accuracy,we first build a multiphase flow database with 3561 groups of data and developed a drift closure relationship with stable continuity and high ***,a high-order numerical scheme with strong fault capture ability is constructed by effectively combining MUSCL technology,van Albada slope limiter and AUSMV numerical ***,the energy equation is coupled into the AUSMV numerical scheme of the drift flow model in the form of finite difference.A transient non-isothermal wellbore multiphase flow model with wide applicability is formed by integrating the three technologies,and the effects of various factors on the calculation accuracy are *** accuracy of the simulator is verified by comparing the measurement results with the blowout experiment of a full-scale experimental well.

关键词： Drift closure relation Non-isothermal model High-precision Multiphase flow solver Wellbore pressure control

Infrared Earth sensor with a large field of view for low-Earth-orbiting micro-satellites

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Frontiers of Information Technology & Electronic Engineering 2021年第2期22卷 262-271页

作者： Hao wang zhi-yuan wang Ben-dong wang Zhong-he JIN John L.CRASSIDIS School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027China Department of Mechanical and Aerospace Engineering University at Buffalothe State University of New YorkBuffalo 14260-4400USA

Infrared Earth sensors are widely used in attitude-determination and control systems of *** main deficiency of static infrared Earth sensors is the requirement of a small field of view(FOV).A typical FOV for a static infrared Earth sensor is about 20°to 30°,which may not be sufficient for low-Earth-orbiting microsatellites.A novel compact infrared Earth sensor with an FOV of nearly 180°is developed *** Earth sensor comprises a panoramic annular lens(PAL)and an off-the-shelf camera with an uncooled complementary-metaloxide-semiconductor(CMOS)infrared *** is used to augment FOV so as to obtain a complete infrared image of the Earth from *** algorithm is developed to compensate for the distortion caused by PAL and to calculate the vector of the *** new infrared Earth sensor is compact with low power consumption and high *** images and on-orbit infrared images obtained via the micro-satellite ZDPS-2 are used to assess the performance of the new infrared Earth *** show that the accuracy of the Earth sensor is about 0.032°.

关键词： Infrared Earth sensor Micro-satellite Attitude determination system

Synthesis and performance of Li_4Ti_5O_(12) anode materials using the PVP-assisted combustion method

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Chinese Chemical Letters 2014年第12期25卷 1569-1572页

作者： Long-Jiao Chang Shao-Hua Luo Hai-Liang Zhang Xi-Wei Qi zhi-yuan wang Yan-Guo Liu Yu-Chun Zhai School of Materials and Metallurgy Northeastern University Hebei Provincial Laboratory of Dielectric and Electrolyte Functionals Materials School of Resources and Materials Northeastern University at Qinghuangdao Branch

Li4Ti5O12 was synthesized by a facile gel-combustion method（GCM） with polyvinylpyrrolidone（PVP） as the polymer chelating agent and *** structural and electrochemical properties of the sample were compared with the one prepared by the conventional solid-state reaction（SSR） through X-ray diffraction（XRD）,scanning electron microscopy（SEM）,cyclic voltammetry（CV）,charge-discharge measurements,and electrochemical impedance spectroscopy（EIS）,*** sub-microscale Li4Ti5O12 oxides,with a high phase purity and good stoichiometry,can be obtained by annealing at 800℃.The grain size is smaller than that of the samples that were power prepared by ***-ion batteries with a GCM Li4Ti5O12 anode exhibit excellent reversible capacities of 167.6,160.7,152.9,and 144.2 mAh/g,at the current densities of 0.5 C,1 C,3 C and 5 C,*** excellent cycling and rate performance can be attributed to the smaller particle size,lower charge-transfer resistance and larger lithium ion diffusion *** is therefore concluded that GCM Li4Ti5O12 is a promising candidate for applications in highrate lithium ion batteries.

关键词： Lithium ion battery Lithium titanate Combustion synthesis Polyvinylpyrrolidone

Identification of a novel inflammatory-related gene signature to evaluate the prognosis of gastric cancer patients

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 945-967页

作者： Jia-Li Hu Mei-Jin Huang Halike Halina Kun Qiao zhi-yuan wang Jia-Jie Lu Cheng-Liang Yin Feng Gao Department of Gastroenterology People's Hospital of Xinjiang Uygur Autonomous RegionUrumqi 830001Xinjiang Uygur Autonomous RegionChina Xinjiang Clinical Research Center for Digestive Disease Urumqi 830001Xinjiang Uygur Autonomous RegionChina Department of Oncology 920th Hospital of PLA Joint Logistics Support ForceKunming 650032Yunnan ProvinceChina Faculty of Medicine Macao University of Science and TechnologyMacao 999078China

BACKGROUND Gastric cancer(GC)is a highly aggressive malignancy with a heterogeneous nature,which makes prognosis prediction and treatment determination *** is now recognized as one of the hallmarks of cancer and plays an important role in the aetiology and continued growth of *** also affects the prognosis of GC *** reports suggest that a number of inflammatory-related biomarkers are useful for predicting tumour ***,the importance of inflammatory-related biomarkers in predicting the prognosis of GC patients is still *** To investigate inflammatory-related biomarkers in predicting the prognosis of GC *** constructed using the least absolute shrinkage and selection operator Cox regression model based on the GEO *** patients from the GSE26253 cohort were used for *** and multivariate Cox analyses were used to determine the independent prognostic factors,and a prognostic nomogram was *** calibration curve and the area under the curve based on receiver operating characteristic analysis were utilized to evaluate the predictive value of the *** decision curve analysis results were plotted to quantify and assess the clinical value of the *** set enrichment analysis was performed to explore the potential regulatory pathways *** relationship between tumour immune infiltration status and risk score was analysed via Tumour Immune Estimation Resource and ***,we analysed the association between risk score and patient sensitivity to commonly used chemotherapy and targeted therapy *** A prognostic model consisting of three inflammatory-related genes(MRPS17,GUF1,and PDK4)was *** prognostic analysis revealed that the risk score was a separate prognostic factor in GC *** to the risk score,GC patients were stratified into high-and low-risk groups,and patients in the high-risk group ha

关键词： Gastric cancer Inflammation Immune infiltration Prognosis signature Subt

An artificial intelligence enhanced star identification algorithm

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Frontiers of Information Technology & Electronic Engineering 2020年第11期21卷 1661-1670页

作者： Hao wang zhi-yuan wang Ben-dong wang Zhuo-qun YU Zhong-he JIN John L.CRASSIDIS School of Aeronautics and Astronarutics Zhejiang UniversityHangzhou 310027China Department of Mechanical and Aerospace Engineering University at BuffaloState University of New YorkAmherstNY 14260-4400USA

An artificial intelligence enhanced star identification algorithm is proposed for star trackers in lost-inspace mode.A convolutional neural network model based on Vgg16 is used in the artificial intelligence algorithm to classify star *** training dataset is constructed to achieve the networks’optimal *** results show that the proposed algorithm is highly robust to many kinds of noise,including position noise,magnitude noise,false stars,and the tracker’s angular *** a deep convolutional neural network,the identification accuracy is maintained at 96%despite noise and interruptions,which is a significant improvement to traditional pyramid and grid algorithms.

关键词： Star tracker Lost-in-space Star identification Convolutional neural network

A lithium–tin fluoride anode enabled by ionic/electronic conductive paths for garnet-based solid-state lithium metal batteries

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Rare Metals 2024年第2期43卷 575-587页

作者： Lei Zhang Qian-Kun Meng Xiang-Ping Feng Ming Shen Yu-Qing Zhang Quan-Chao Zhuang Run-Guo Zheng zhi-yuan wang Yan-Hua Cui Hong-Yu Sun Yan-Guo Liu School of Materials Science and Engineering Northeastern UniversityShenyang110819China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao066004China School of Materials and Physics China University of Mining&TechnologyXuzhou221116China Institute of Electronic Engineering China Academy of Engineering PhysicsMianyang621900China

The high energy density and stability of solid-state lithium metal batteries(SSLMBs)have garnered great ***-type oxides,especially Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO),with high ionic conductivity,wide electrochemical window,and stability to Li metal anode,are promising solid-state electrolyte(SSEs)materials for ***,Li/LLZTO interface issues including high interface resistance,inhomogeneous Li deposition,and Li dendrite growth have hindered the practical application of ***,a multi-functional Li–SnF_(2) composite anode with Li,LiF,and Li-Sn alloy was specifically designed and *** composite anode improves the wettability to LLZTO,constructing an intimate contact interface between it and ***,ionic/electronic conductive paths in situ formed at the interface can effectively uniform Li deposition and suppress Li *** solid-state symmetric cell exhibits low interface resistance(11Ω·cm^(2)) and high critical current density(1.3 mA·cm^(−2))at 25℃.The full SSLMB based on LiFePO_(4) or LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) cathode also shows stable cycling performance and high rate *** work provides a new composite anode strategy for achieving high-energy density and high-safety SSLMBs.

关键词： Solid-state lithium metal batteries(SSLMBs) Lithium-tin fluoride anode Ionic/electronic conductive Interface resistance Lithium dendrite