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虚拟人物的身体图式分析

计算机辅助设计与图形学学报 2020年第7期32卷 1080-1086页

作者：郝强郭子淳清华大学未来实验室北京100084 中国传媒大学动画与数字媒体艺术学院北京100024

近年来,随着计算机图形学特别是计算机动画研究与应用的飞速发展,科幻电影中出现了大量的机甲身体和外化骨骼等数字化身体.这种对于身体的所指现象,逐渐形成了一套独特的视觉符号.结合人工智能的交叉性和数字算法,如何从基于真实演员的... 详细信息

近年来,随着计算机图形学特别是计算机动画研究与应用的飞速发展,科幻电影中出现了大量的机甲身体和外化骨骼等数字化身体.这种对于身体的所指现象,逐渐形成了一套独特的视觉符号.结合人工智能的交叉性和数字算法,如何从基于真实演员的自然身体转向为数字化身体,并在此基础上保持其行为和情感的自然性,从而形成数字化身体的行为和情感的自然融合与互动,已经成为计算机图形学研究与应用的又一个挑战.文中从具身认知学的角度出发,以一系列科幻电影中的数字化人物为例,将身体图式作为理解数字化身体的行为与情感自然融合的关键所在,将身体图式分类为数字身体、复合身体和人造身体,从身体图式到内在感知以及科幻电影中身体图式的空间转向,在理论上对空间转化与互动进行分析.相关研究对今后在科幻电影中如何创造更加人性化的虚拟人物有着积极的作用.

关键词：计算机图形学人工智能数字化身体身体图式

Hydrocarbon gas huff-n-puff optimization of multiple horizontal wells with complex fracture networks in the M unconventional reservoir

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Petroleum Science 2024年第2期21卷 1018-1031页

作者： hao-Chuan Zhang Yong Tang You-Wei He Yong Qin Jian-Hong Luo Yu Sun Ning Wang De-qiang Wang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500SichuanChina CNPC Research Institute of Petroleum Exploration&Development Beijing100083China Southwest Oil&Gas Field Company PetroChinaChengdu610051SichuanChina State Key Laboratory of Offshore Oil Exploitation CNOOC Research Institute Co.LtdBeijing100027China

The oil production of the multi-fractured horizontal wells(MFHWs) declines quickly in unconventional oil reservoirs due to the fast depletion of natural energy. Gas injection has been acknowledged as an effective method to improve oil recovery factor from unconventional oil reservoirs. Hydrocarbon gas huff-n-puff becomes preferable when the CO_(2) source is limited. However, the impact of complex fracture networks and well interference on the EOR performance of multiple MFHWs is still unclear. The optimal gas huff-n-puff parameters are significant for enhancing oil recovery. This work aims to optimize the hydrocarbon gas injection and production parameters for multiple MFHWs with complex fracture networks in unconventional oil reservoirs. Firstly, the numerical model based on unstructured grids is developed to characterize the complex fracture networks and capture the dynamic fracture ***, the PVT phase behavior simulation was carried out to provide the fluid model for numerical simulation. Thirdly, the optimal parameters for hydrocarbon gas huff-n-puff were obtained. Finally, the dominant factors of hydrocarbon gas huff-n-puff under complex fracture networks are obtained by fuzzy mathematical method. Results reveal that the current pressure of hydrocarbon gas injection can achieve miscible displacement. The optimal injection and production parameters are obtained by single-factor analysis to analyze the effect of individual parameter. Gas injection time is the dominant factor of hydrocarbon gas huff-n-puff in unconventional oil reservoirs with complex fracture networks. This work can offer engineers guidance for hydrocarbon gas huff-n-puff of multiple MFHWs considering the complex fracture networks.

关键词： Unconventional oil reservoir Complex fracture network Hydrocarbon gas huff-n-puff Parameter optimization Numerical simulation

Chromosome-level assembly of triploid genome of Sichuan pepper(Zanthoxylum armatum)

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Horticultural Plant Journal 2024年第2期10卷 437-449页

作者： Lizhi Song Yue Huang hao Zuo Ning Tang Zhengguo Li Wenbiao Jiao Feng Xu qiang Xu Zexiong Chen National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops Huazhong Agricultural UniversityWuhanHubei 430070China Chongqing Key Laboratory of Economic Plant Biotechnology Chongqing University of Arts and SciencesChongqing 402160China School of Life Sciences Chongqing UniversityChongqing 400030China College of Horticulture and Gardening Yangtze UniversityJingzhouHubei 434025China College of Informatics Huazhong Agricultural UniversityWuhanHubei 430070China

As an important spice species in Rutaceae, the Sichuan pepper (Zanthoxylum armatum) can provide pungent and numbing taste, as well as aroma in its mature fruit. Here we assembled a chromosome-level genome of green prickly ash which was widely cultivated in a major production area including Chongqing and Sichuan province, China. We generated 712 Gb (~112×) PacBio long reads and 511 Gb (~82×) Hi-C data, and yielded an assembly of 99 pseudochromosomes with total size of 5.32 Gb and contig N50 of 796 kb. The genomic analyses and cytogenetic experiments both indicated that the cultivarZhuye Huajiao’ was a triploid. We identified a Zanthoxylum-specific whole genome duplication event emerging about 24.8 million years ago (Mya). We also detected a transposition burst event (0.3-0.4 Mya) responsible for the large genome size of Z. armatum. Metabolomic analysis of the Zanthoxylum fruits during development stages revealed profiles of39 volatile aroma compounds and 528 secondary metabolites, from which six types of sanshools were identified. Based on metabolomic and transcriptomic network analysis, we screened candidate genes encoding long chain acyl-CoA synthetase, fatty acid desaturase,branched-chain amino acid aminotransferase involved in sanshool biosynthesis and three genes encoding terpene synthase during fruit development. The multi-omics data provide insights into the evolution of Zanthoxylum and molecular basis of numbing and aroma flavor of Sichuan pepper.

关键词： Zanthoxylum armatum Genome Sanshool Terpenoid

日本立克次体与日本斑点热:病原体与疾病综述

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中国媒介生物学及控制杂志 2024年第1期35卷 128-131页

作者：王晓旭梁莹尚猛王璐姜宛均冀好强刘起勇山东大学公共卫生学院山东济南250102 中国疾病预防控制中心传染病预防控制所媒介生物控制室传染病溯源预警与智能决策全国重点实验室北京102206

日本斑点热(JSF)作为一种易被忽视的传染病,误诊和延误治疗是JSF患者不良预后的重要原因。该文对其病原体日本立克次体的遗传进化特征、传播途径及宿主和JSF的流行病学、临床表现、实验室检测及应对措施进行综述。尽管我国对该自然疫源... 详细信息

日本斑点热(JSF)作为一种易被忽视的传染病,误诊和延误治疗是JSF患者不良预后的重要原因。该文对其病原体日本立克次体的遗传进化特征、传播途径及宿主和JSF的流行病学、临床表现、实验室检测及应对措施进行综述。尽管我国对该自然疫源性疾病的研究取得了一定的进展,但是目前还缺乏全国范围内媒介蜱类和JSF的分布信息,为此需加强全国JSF的流行病学调查和其宿主、媒介生物的监测,为该病的预防控制和临床诊断提供依据。

关键词：日本立克次体日本斑点热流行病学现状研究

Dynamic mechanical characteristics of deep Jinping marble in complex stress environments

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 630-644页

作者： Chendi Lou Heping Xie Ru Zhang Hai Ren hao Luo Kun Xiao Yuan Peng qiang Tan Li Ren Institute for Disaster Management and Reconstruction Sichuan UniversityChengdu610207China College of Water Resource&Hydropower Sichuan UniversityChengdu610065China MOE Key Laboratory of Deep Earth Science&Engineering Sichuan UniversityChengdu610065China Yalong River Hydropower Development Company Ltd.Chengdu610051China (Chongqing)International Engineering Technology Company Ltd.Chongqing401121China

To reveal the dynamic mechanical characteristics of deep rocks,a series of impact tests under triaxial static stress states corresponding to depths of 300-2400 m were *** results showed that both the strain rates and the stress environments in depth significantly affect the mechanical characteristics of *** sensitivity of strain rate to the dynamic strength and deformation modulus shows a negative correlation with depth,indicating that producing penetrative cracks in deep environments is more difficult when damage *** dynamic strength shows a tendency to decrease and then increase slightly,but decreases sharply *** demonstrates a similar trend as that of strength,whereas reflectivity indicates the opposite ***,two critical depths with high dynamically induced hazard possibilities based on the China Jinping Underground Laboratory(CJPL)were proposed for deep *** first critical depth is 600-900 m,beyond which the sensitivity of rock dynamic characteristics to the strain rate and restraint of circumferential stress decrease,causing instability of surrounding rocks under axial stress *** second one lies at 1500-1800 m,where the wave impedance and dynamic strength of deep surrounding rocks drop sharply,and the dissipation energy presents a negative *** suggests that the dynamic instability of deep surrounding rocks can be divided into dynamic load dominant and dynamic load induced types,depending on the second critical depth.

关键词： Rock mechanics Split-Hopkinson pressure bar Coupled static‒dynamic loading Different depths Holmquist-Johnson-Cook(HJC)model

Highly coupled off-resonance lattice design in diffraction-limited light sources

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Nuclear Science and Techniques 2024年第9期35卷 92-102页

作者： Yi-hao Gong Shun-qiang Tian Xin-Zhong Liu Shou-Zhi Xuan Li-Yuan Tan Ling-Long Mao Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 ShanghaiChina Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 ShanghaiChina University of Chinese Academy of Sciences 100049 BeijingChina

The round-beam operation presents many benefits for scientific experiments regarding synchrotron radiation and the weak-ening influences of intra-beam scattering in diffraction-limited synchrotron light sources.A round-beam generation method based on the global setting of skew quadrupoles and the application of a non-dominated sorting genetic algorithm was pro-posed in this *** schemes,including large-emittance coupling introduced via betatron coupling and vertical disper-sion,were explored in a candidate lattice for an upgrade-proposal of the Shanghai synchrotron radiation *** variations with lattice imperfections and their influence on the beam dynamics of beam optic distortions were *** results demonstrated that a precise coupling control ranging from 10 to 100%was achieved under low optical distortion,whereas full-coupling generation and its robustness were achieved by our proposed method by adjusting the skew quadrupole components located in the dispersion-free *** Touschek lifetime increased by a factor of 2–2.5.

关键词： Diffraction-limited storage ring(DLSR) Shanghai synchrotron radiation facility upgrade(SSRF-U) Round beam Off-resonance coupling

Deciphering dynamic surface of PtRu alloy nanocatalysts to revisit their synergistic effects during the electrooxidation

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Science China Chemistry 2024年第7期67卷 2224-2233页

作者： Xiao-Chong Li Bo Wang Zhou Yu qiang Wan Ju-Fang Zheng Emmanuel Maisonhaute Xiao-Shun Zhou Ya-hao Wang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China Laboratoire Interface et Systèmes Electrochimiques CNRS UMR 8235Sorbonne UniversitéF-75252 Paris cedex 5France

Correlating dynamic structural transformation of catalysts with the surface intermediate species under operating conditions is critical for updating the understanding of structure–performance ***,we probe the electrochemical potentialdependent surface structures and adsorbed intermediates on PtRu binary alloy nanocatalysts to revisit its synergistic mechanisms for CO electrooxidation enhanced ***-situ spectral characteristics by using modified shell-isolated nanoparticle-enhanced Raman spectroscopy,show that in acidic solution,when the potential is positively scanned from 0.1 V to 1.5 V relative to reversible hydrogen electrode(RHE),the surface of the alloy catalyst evolves from metallic PtRu to adsorbed oxygen gradually covering and accumulating on Ru sites(denoted as PtRuO_(x),x≤2),forming segregated RuO_(2),and finally forming a threedimensional oxide layer(denoted as 3D PtRuO_(4)).Moreover,molecular evidence associated with periodic density functional theory calculations reveals that electronic effects promote ruthenium to become more oxidizable and *** particular,we found here that ^(*)O and ^(*)OH at surface RuO_(x) sites are highly efficient CO oxidation active species in comparison to the same entities adsorbed on metallic Ru *** work sheds light on the complex surface dynamic process of practical Pt-based binary nanocatalysts and improves the understanding of synergistic mechanism for the development of fuel cell devices.

关键词： in-situ Raman spectroscopy surface evolution bifunctional mechanism PtRu electrooxidation

Network regulation of calcium signal in stomatal development

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Acta Pharmacologica Sinica 2006年第7期27卷 950-958页

作者： Zhu-xia SHEN Gen-xuan WANG~2 Zhi-qiang LIU hao ZHANG Mu-qing QIU Xing-zheng Zhao Yi GAN College of Life Sciences,Zhejiang University,Hangzhou 310058,China College of Life Sciences Zhejiang University Hangzhou China

Aim:Each cell is the production of multiple signal transduction programs involv-ing the expression of thousands of *** study aims to gain insights intothe gene regulation mechanisms of stomatal development and will investigate therelationships among some signaling transduction ***:Nail enamelprinting was conducted to observe the stomatal indices of wild type and 10 mu-tants(plant hormone mutants,Pi-starvation induced CaM mutants and Pi-starva-tion-response mutant)in Arabidopsis,and their stomatal indices were analyzedby *** analyzed the stomatal indices of 10 Arabidopsis mutants wereanalyzed by a model PRGE(potential relative effect of genes)to research relationsamong these ***:In wild type and 10 mutants,the stomatal indexdidn’t differ with respect to location on the lower *** with wildtype,the stomatal indices of 10 mutants all decreased ***,significant changes and interactions might exist between some mutant ***:It was the stomatal intensity in Arabidopsis might be highly sensi-tive to most mutations in *** the effect of many gene mutations on thestomatal index might be negative,we also could assume the stomatal developmentwas regulated by a signal network in which one signal transduction change mightinfluence the stomatal development more or less,and the architecture might ***,we could speculate that calcium was a hub in stomataldevelopment signal regulation network,and other signal transduction pathwaysregulated stomtal development by influencing or being influenced by calciumsignal transduction pathways.

关键词： stomatal index stomatal development signal transduction pathways signal network calcium

Strong Interaction Between Redox Mediators and Defect-Rich Carbons Enabling Simultaneously Boosted Voltage Windows and Capacitance for Aqueous Supercapacitors

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Energy & Environmental Materials 2024年第4期7卷 269-276页

作者： Lu Guan Yifan Zhu Yi Wan Mengdi Zhang qiang Li Xiaoling Teng Yunlong Zhang hao Yang Yan Zhang Han Hu Mingbo Wu State Key Laboratory of Heavy Oil Processing College of Chemical Engineering China University of Petroleum (East China) College of Physics University-Industry Joint Center for Ocean Observation and Broadband Communication Qingdao University

Energy density,the Achilles'heel of aqueous supercapacitors,is simultaneously determined by the voltage window and specific capacitance of the carbon materials,but the strategy of synchronously boosting them has rarel... 详细信息

关键词： defect-rich carbons redox mediators strong interaction supercapacitors voltage windows