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First-principles investigation of the significant anisotropy and ultrahigh thermoelectric efficiency of a novel two-dimensional Ga_(2)I_(2)S_(2) at room temperature

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International Journal of Extreme Manufacturing 2022年第2期4卷 100-112页

作者： Zheng Chang Ke Liu Zhehao Sun Kunpeng yuan Shuwen Cheng Yufei Gao xiaoliang Zhang Chen Shen Hongbin Zhang Ning Wang Dawei Tang Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education School of Energy and Power EngineeringDalian University of TechnologyDalian 116024People’s Republic of China Research Office of Propulsion Technology Expace Technology Corporation LimitedBeijing 100176People’s Republic of China Research School of Chemistry Australian National UniversityCanberraACT 2601Australia School of Metallurgy Northeastern UniversityShenyang 100819People’s Republic of China Institut fur Materialwissenschaft Technische Universitat DarmstadtDarmstadt 64283Germany School of Physics University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China

Two-dimensional(2D)thermoelectric(TE)materials have been widely developed;however,some 2D materials exhibit isotropic phonon,electron transport properties,and poor TE performance,which limit their application ***,exploring excellent anisotropic and ultrahigh-performance TE materials are very ***,we first investigate the phonon thermal and TE properties of a novel 2D-connectivity ternary compound named *** paper comprehensively studies the phonon dispersion,phonon anharmonicity,lattice thermal conductivity,electronic structure,carrier mobility,Seebeck coefficient,electrical conductivity,and the dimensionless figure of merit(ZT)versus carrier concentration for 2D Ga_(2)I_(2)S_(2).We conclude that the in-plane lattice thermal conductivities of Ga_(2)I_(2)S_(2) at room temperature(300 K)are found to be 1.55 W mK^(−1) in the X-axis direction(xx-direction)and 3.82 W mK^(−1)in the Y-axis direction(yy-direction),which means its anisotropy ratio reaches ***,the TE performance of p-type and n-type doping 2D Ga2I2S2 also shows significant anisotropy,giving rise to the ZT peak values of p-type doping in xx-and yy-directions being 0.81 and 1.99,respectively,and those of n-type doping reach ultrahigh values of 7.12 and 2.89 at 300 K,which are obviously higher than the reported values for p-type and n-type doping ternary compound Sn2BiX(ZT∼1.70 and∼2.45 at 300 K)(2020 Nano Energy 67104283).This work demonstrates that 2D Ga_(2)I_(2)S_(2) has high anisotropic TE conversion efficiency and can also be used as a new potential room-temperature TE material.

关键词： thermoelectricity strong anisotropy two-dimensional materials room temperature first-principles calculation

Petrogenesis of the Dengying Formation dolomite in northeast Sichuan Basin， SW China: Constraints from carbon-oxygen isotopic and trace elemental data

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Journal of Earth Science 2022年

作者： yuan He Wenqi Li Huichuan Liu Nansheng Qiu Kunyu Li Cheng Xi xiaoliang Bai Hongyu Long Youlian Chen Research Institute of Exploration and Development of PetroChina Southwest Oil & Gasfield Company State Key Laboratory of Petroleum Resources and Prospecting， China University of Petroleum (Beijing) College of Geosciences， China University of Petroleum (Beijing)

The widespread dolomite of the Sinian Dengying Formation in the Sichuan Basin （China） serves as one of the most important oil and gas reservoir rocks of the basin. Well WT1， as an exploration well， is recently drilled in the Kaijiang County， northeastern Sichuan Basin （SW China）， and it drills through the Dengying Formation dolomite at the depth interval of 7500–7580 m. In this study， samples are systematically collected from the cores of that interval， followed by new analyses of carbon-oxygen isotope， major elements， trace elements and rare earth elements （REEs）. The Dengying Formation dolomites of Well WT1 have δ13C values of 0.37‰ to 2.91‰ and δ18O values of -5.72‰ to -2.73‰， indicating that the dolomitization fluid is derived from contemporary seawater in the near-surface environment， rather than the burial environment. Based on the REE patterns， we recognize the seawater-sourced components， the mixed-sourced components and the terrigenous-sourced components， indicating the marine origin of the dolomite with detrital contamination and diagenetic alteration. Moreover， high Al， Th， and Zr contents indicate significant detrital contamination derived from clay and quartz minerals， and high Sr/Ba and Sr/Cu ratios imply a relatively dry depositional environment with extremely high seawater salinity， intensive evaporation， and strong influences of terrigenous sediment.

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乡村概念再认知

地理学报 2020年第2期75卷 398-409页

作者：胡晓亮李红波张小林袁源南京师范大学地理科学学院南京210023 江苏省地理信息资源开发与利用协同创新中心南京210023

乡村是乡村地理学的核心概念,对乡村概念形成的认知指引着乡村地理学的发展方向。西方乡村地理学伴随着对乡村性理解的不断深入,不同的学术流派渐次更迭。国内乡村地理学发展侧重于服务国家与地方发展需求,对学科理论基础的讨论较少,逐... 详细信息

乡村是乡村地理学的核心概念,对乡村概念形成的认知指引着乡村地理学的发展方向。西方乡村地理学伴随着对乡村性理解的不断深入,不同的学术流派渐次更迭。国内乡村地理学发展侧重于服务国家与地方发展需求,对学科理论基础的讨论较少,逐渐形成了理论滞后于实践的局面。自1978年改革开放以来,中国经济社会面貌发生了翻天覆地的变化,城乡发展经历了深刻转型,国内对于乡村概念的辨析亟需深化。本文首先梳理了国内外相关研究领域对乡村概念认知的演化脉络,指出乡村概念认知逐步从单一走向多元、从被动转为能动、从静态特征深入到动态过程的发展主线,随后提出乡村概念界定的困难在于要素流动的空间动态性、乡村空间系统的不整合性、乡村概念自身的相对性,以及乡村振兴、城乡融合为政策导向的新时代背景。最后总结了乡村概念认知对乡村地理学学科发展的引领作用。

关键词：乡村乡村性乡村地理学乡村概念乡村发展

一种用于大视场成像和偏振光谱探测的微型可重构超构光学系统

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Engineering 2024年第4期35卷 67-73页

作者： Fei Zhang Minghao Liao Mingbo Pu Yinghui Guo Lianwei Chen Xiong Li Qiong He Tongtong Kang xiaoliang Ma yuan Ke Xiangang Luo State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of SciencesChengdu 610209China School of Optoelectronics University of Chinese Academy of SciencesBeijing 100049China Research Center on Vector Optical Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Tianfu Xinglong Lake Laboratory Chengdu 610299China

Wide-angle imaging and spectral detection play vital roles in tasks such as target tracking,object classification,and ***,limited by their intrinsically different architectures,as determined by frequency dispersion requirements,their simultaneous implementation in a shared-aperture system is ***,we propose a novel concept to realize reconfigurable dual-mode detection based on electrical-control tunable *** a proof-of-concept demonstration,the simultaneous implementation of wide-angle imaging and polarization-spectral detection in a miniature sharedaperture meta-optical system is realized for the first time via the electrical control of cascaded catenary-like *** proposed system supports the imaging(spectral)resolution of approximately 27.8 line-pairs per millimeter(lp·mm^(-1);~80 nm)for an imaging(spectral)mode from 8 to 14 μ*** system also bears a large field of view of about 70°,enabling multi-target recognition in both *** work may promote the miniaturization of multifunctional optical systems,including spectrometers and polarization imagers,and illustrates the potential industrial applications of meta-optics in biomedicine,security,space exploration,and more.

关键词： Metasurfaces Reconfigurable Imaging Spectral

经腹膜外腹腔镜输尿管下段切开取石1例临床分析

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微创泌尿外科杂志 2021年第1期10卷 6-7页

作者：郭珈铭邢念增邵世修张宗亮赵凯王振林张玉莲李晨李雪禹种立强袁效良牛海涛王科青岛大学附属医院泌尿外科山东青岛266555 北京朝阳医院泌尿外科

腹腔镜输尿管切开取石因具有创伤相对小、无输尿管热损伤等优点逐步被泌尿外科医生和患者接受。输尿管上段结石可以通过后腹腔途径输尿管切开取石术治疗,但对于输尿管下段结石,通常选择经腹腔途径[1-2]。但经腹腔途径需要切开腹膜、不... 详细信息

腹腔镜输尿管切开取石因具有创伤相对小、无输尿管热损伤等优点逐步被泌尿外科医生和患者接受。输尿管上段结石可以通过后腹腔途径输尿管切开取石术治疗,但对于输尿管下段结石,通常选择经腹腔途径[1-2]。但经腹腔途径需要切开腹膜、不可避免对肠管造成干扰,进而引起肠粘连、肠梗阻的发生。受到经腹膜外腹腔镜前列腺癌根治、经腹膜外腹腔镜全膀胱切除等手术的启发,我们探索实施了腹膜外途径腹腔镜输尿管切开取石术,并分析如下。

关键词：腹膜外腹腔镜输尿管切开取石输尿管下段结石

Epidemiological Survey on Canine Parvovirus Disease in Taizhou Region,Jiangsu Province,China

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Animal Husbandry and Feed Science 2014年第4期6卷 173-174,179页

作者： yuan Weifeng Liu Jing Zhao Xuegang Lu Jiang Zheng xiaoliang Zhu Hongfei Institute of Animal Sciences Chinese Academy of Agricultural Sciences Jiangsu Animal Husbandry and Veterinary College

The canine parvovirus disease is an acute infectious disease caused by canine parvovirus(CPV). It is clinically characterized by severe vomiting,hemorrhagic enteritis,significant reduction in white blood cells and myocarditis. The disease with high incidence,highly infectious and high mortality has become one of the serious infectious diseases threatening dog raising industry in China. In this research,260 cases of canine parvovirus case from an Aite Pet Clinic in Taizhou City during January 2010 and March 2011 were analyzed. This study discloses the epidemiology of CPV in Taizhou region of Jiangsu Province,i. e.,the incidence of CPV and canine motility are closely correlated with age,breed,immune inoculation and season. This study provides useful guide for the clinical treatment of CPV in the future.

关键词： Taizhou region Canine parvovirus disease Epidemiological investigation

A Research on the Adaptive Cruise Controller for Electric Bus

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A Research on the Adaptive Cruise Controller for Electric Bu...

2018中国汽车工程学会年会

作者： LI xiaoliang ZHANG Xudong ZOU yuan ZAHNG Tao WEI Shouyang School of Mechanical Engineering Beijing Institute of Technology

The intelligent trend of vehicles became irresistible,and the application of adaptive cruise control systems to different vehicles,especially to electric vehicles,became a *** application of adaptive cruise control systems played a significant role in environmental protection,road traffic efficiency and *** this paper,we proposed a hierarchical controller for the adaptive cruise system of the electric *** on millimeter-wave radar,target tracking and recognition algorithms for straight and curved conditions hadbeen *** the upper controller,a proportional differential control algorithm hadbeen adopted based on the vehicle spacing with variable time-headway and its stability hadbeen *** the lower level controller,the look-up table for acceleration and braking hadbeen designed based on test data and a switching rule for acceleration and braking hadbeen *** results of off-line simulation and hardware-in-the-loop simulation showed that the adaptive cruise controller designed with mature control strategy can achieve faster and more accurate control response,real-time performance,and was suitable for applicationon real vehicles.

关键词： adaptive cruise control electric bus object identification hardware in loop

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西方教育地理学研究评述与本土反思

地理科学 2019年第12期39卷 1938-1945页

作者：袁振杰陈晓亮广州大学地理科学学院华南人文地理与城市发展研究中心广东广州510006 广东省城市与移民研究中心广东广州510006 南方海洋科学与工程广东省实验室(珠海) 广东珠海519082

近20 a来,西方教育地理学受马克思主义地理学以及社会文化地理学思想的影响,重新审视教育空间与社会结构的关联,从多维度进一步认识教育空间建构过程中的政治经济与社会文化机制。对西方教育地理学的产生和发展演变进行分析,并尝试从政... 详细信息

近20 a来,西方教育地理学受马克思主义地理学以及社会文化地理学思想的影响,重新审视教育空间与社会结构的关联,从多维度进一步认识教育空间建构过程中的政治经济与社会文化机制。对西方教育地理学的产生和发展演变进行分析,并尝试从政治经济和社会文化两大视角,总结和归纳当前西方教育地理学研究的主要成果和内容。教育地理学是一门新兴而又发展迅猛的人文地理学分支,但该学科的理论和实证发展尚处于以西方为主导的阶段,强势的西方话语体系还未充分涉及和理解非西方国家背景下的教育现象。当前是非西方国家建构自身教育地理学理论特色,并与西方教育地理学研究展开理论和实践对话的重要机遇和窗口。中国拥有世界规模最大的教育群体,当前社会经济发展的转型和人口结构的改变也进一步塑造了教育空间的多样性和特殊性。总之,加深教育与空间关系的研究,增强教育地理学研究的中西对话,构建中国化的教育地理学研究体系,使教育空间成为考察中国社会经济转型的重要视角,是中国教育地理学研究未来应努力的方向。

关键词：教育地理学政治经济视角社会文化视角教育空间本土反思

DNA damage response-related immune activation signature predicts the response to immune checkpoint inhibitors: from gastrointestinal cancer analysis to pan-cancer validation

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Cancer Biology & Medicine 2024年第3期21卷 252-266页

作者： Junya Yan Shibo Wang Jing Zhang Qiangqiang yuan Xianchun Gao Nannan Zhang Yan Pan Haohao Zhang Kun Liu Jun Yu Linbin Lu Hui Liu xiaoliang Gao Sheng Zhao Wenyao Zhang Abudurousuli Reyila Yu Qi Qiujin Zhang Shundong Cang yuanyuan Lu Yanglin Pan Yan Kong Yongzhan Nie State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers and National Clinical Research Center for Digestive Diseases Xijing Hospital of Air Force Military Medical UniversityXi'an 710032China Department of Oncology Henan Provincial People's HospitalZhengzhou University People's HospitalZhengzhou 450o03China Faculty of Life Science Northwest UniversityXi'an 710069China Unit 73211 of the People's Liberation Army Nanjing 211800China Key Laboratory of Resource Biology and Biotechnology in Western China(Ministry of Education) School of MedicineNorthwest UniversityXi'an 710069China Shaanxi University of Chinese Medicine Second Clinical Medicine FacultyXi'an 712046China Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education) Department of Renal Cancer and MelanomaPeking University Cancer Hospital and InstituteBeijing 100142China

Objective: DNA damage response(DDR) deficiency has emerged as a prominent determinant of tumor immunogenicity. This study aimed to construct a DDR-related immune activation(DRIA) signature and evaluate the predictive accuracy of the DRIA signature for response to immune checkpoint inhibitor(ICI) therapy in gastrointestinal(GI) ***: A DRIA signature was established based on two previously reported DNA damage immune response assays. Clinical and gene expression data from two published GI cancer cohorts were used to assess and validate the association between the DRIA score and response to ICI therapy. The predictive accuracy of the DRIA score was validated based on one ICI-treated melanoma and three pan-cancer published ***: The DRIA signature includes three genes(CXCL10, IDO1, and IFI44L). In the discovery cancer cohort, DRIA-high patients with gastric cancer achieved a higher response rate to ICI therapy than DRIA-low patients(81.8% vs. 8.8%;P < 0.001), and the predictive accuracy of the DRIA score [area under the receiver operating characteristic curve(AUC) = 0.845] was superior to the predictive accuracy of PD-L1 expression, tumor mutational burden, microsatellite instability, and Epstein–Barr virus status. The validation cohort demonstrated that the DRIA score identified responders with microsatellite-stable colorectal and pancreatic adenocarcinoma who received dual PD-1 and CTLA-4 blockade with radiation therapy. Furthermore, the predictive performance of the DRIA score was shown to be robust through an extended validation in melanoma, urothelial cancer, and ***: The DRIA signature has superior and robust predictive accuracy for the efficacy of ICI therapy in GI cancer and pancancer, indicating that the DRIA signature may serve as a powerful biomarker for guiding ICI therapy decisions.

关键词： DNA damage response-related immune activation immune checkpoint inhibitors biomarker gastrointestinal cancer pan-cancer