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Flexible crystalline silicon solar cells leading to the beginning of the mobile energy era

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Science China Materials 2023年第8期66卷 3373-3374页

作者： Rui jia Institute of Microelectronics of Chinese Academy of Sciences Beijing 100029China University of Chinese Academy of Sciences Beijing 100029China

Monocrystalline silicon solar cells are currently the fastestdeveloping type of solar *** have the advantages of low price,long service life,mature manufacture technology and high conversion *** silicon solar cells account for more than 95%of the photovoltaic market in the *** the crystalline silicon solar cells,the heterojunction cell(HJT)has achieved the highest efficiency of single crystalline silicon solar cell—26.81%[1].However,heterojunction cells,like other crystalline silicon cells,cannot be bent when the silicon substrate is thick,thus limiting their applications in many fields.

关键词： crystalline price limiting

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乙酰丙酮铱Ir(acac)_(3)电子结构及光学性质的理论研究

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原子与分子物理学报 2025年第1期42卷 1-7页

作者：樊依佳蔚娇娇郭家成陈扬尹杜恭贺西北工业大学伦敦玛丽女王大学工程学院西安710129 西安邮电大学理学院西安710121

乙酰丙酮铱是一种由过渡金属Ir与乙酰丙酮酸(acetylcaetonato)有机部分组成的过渡金属有机配合物,它是一种重要的绿光磷光材料,同时其也是多种铱系发光材料的组成部分.采用密度泛函理论(DFT)对Ir(acac)_(3)单体及其二聚物的基态几何结... 详细信息

乙酰丙酮铱是一种由过渡金属Ir与乙酰丙酮酸(acetylcaetonato)有机部分组成的过渡金属有机配合物,它是一种重要的绿光磷光材料,同时其也是多种铱系发光材料的组成部分.采用密度泛函理论(DFT)对Ir(acac)_(3)单体及其二聚物的基态几何结构进行了优化,在此基础上考察了它们的振动和红外光谱,并使用CIS方法对它们的激发态性质进行了理论研究.计算得到的单体和二聚物的吸收光谱均在紫外波段,单体的主要吸收峰有260 nm,350 nm,414 nm,二聚物的主要吸收峰有299 nm,353 nm,401 nm.计算得到了二者在乙腈CH_(3)CN溶液中的吸收光谱,与它们气相情况的结果相比,溶剂极性的影响使得电子吸收谱发生蓝移.计算结果表明Horst Kunkely和Arnd Vogler所得光谱中既含有单体的特征光谱,又含有二聚体的特征光谱,证明实验溶液中同时存在乙酰丙酮铱的低聚物,并且二者的组分比能被合理推算.最后,对多聚体的形成机理作了简单讨论.

关键词： Ir(acac)_(3) 密度泛函理论(DFT) CIS 电子吸收光谱溶液效应

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Paleontology: advancing China's international leadership

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National Science Review 2019年第1期6卷 171-176页

作者： Hepeng jia Writes for NSR from Beijing

In recent years, Chinese scientists have achieved significant progress in paleontological discoveries and scientific studies. Series of studies published in top journals, such as Science, Nature and Proceedings of the National Academy of Sciences of the United States of America(PNAS), have astonished the world by presenting beautiful fossils that furnish robust evidence to enrich the understanding of organismic evolution, major extinctions and stratigraphy. It has been portrayed as the heyday in the paleontology of China. What is the status of the field?What factors have caused the avalanche of fossil discoveries in China? What implications can these new discoveries

关键词： Paleontology advancing China’s international leadership

Linear generalized synchronization of chaotic systems with uncertain parameters

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Journal of Systems Engineering and Electronics 2008年第4期19卷 779-784页

作者： jia Zhen Dept. of Mathematics and Physics Guilin Univ. of Technology Guilin 541004 P. R. China

A more general form of projective synchronization, so called linear generalized synchronization （LGS） is proposed, which includes the generalized projective synchronization （GPS） and the hybrid projective synchronization （HPS） as its special cases, Based on the adaptive technique and Lyapunov stability theory, a general method for achieving the LGS between two chaotic or hyperehaotic systems with uncertain parameters in any scaling matrix is presented. Some numerical simulations are provided to show the effectiveness and feasibility of the proposed synchronization method.

关键词： generalized synchronization chaotic system hyperchaotic system uncertain parameter adaptive technique.

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ON APPROXIMATION OF LAPLACIAN EIGENPROBLEM OVER A REGULAR HEXAGON WITH ZERO BOUNDARY CONDITIONS

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Journal of Computational Mathematics 2004年第2期22卷 275-286页

作者： jia-changSun ParallelComputingDivision InstituteofSoftwareChineseAcademyofSciencesBeijing100080China

In my earlier paper [4], an eigen-decompositions of the Laplacian operator is given on a unit regular hexagon with periodic boundary conditions. Since an exact decomposition with Dirichlet boundary conditions has not been explored in terms of any elementary *** this paper, we investigate an approximate eigen-decomposition. The function space,corresponding all eigenfunction, have been decomposed into four orthogonal *** of the first eight smallest eigenvalues and related orthogonal functions are given. In particulary we obtain an approximate value of the smallest eigenvalue λ1～29/40π^2= 7.1555, the absolute error is less than 0.0001.

关键词： Dirichlet boundary conditions Laplacian eigen-decomposition Regular hexagon domain

A NOTE ON THE MODEL REFERENCE ADAPTIVE CONTROL OF LINEAR PARABOLIC SYSTEMS WITH CONSTANT COEFFICIENTS

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Journal of Systems Science & Complexity 2011年第6期24卷 1110-1117页

作者： Chaohua jia School of Mathematics and Systems Science Beihang University Beijing 100191 China LMIB of the Ministry of Education Beijing 100191 China

The problem of constructing a model reference adaptive control law for an uncertain 1- dimensional parabolic system with one constant coefficient is considered in this paper. Adaptive control law are obtained by Lyapunov redesign method. The energy method for parabolic systems and the Agmon＇s inequality are applied in the analysis, which leads to a stronger result than that of Hong and Bentsman （Automatica, 1994）.

关键词： Adaptive law distributed parameter systems model reference adaptive control parabolic system.

A New Feistel-Type White-Box Encryption Scheme

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Journal of Computer Science & Technology 2017年第2期32卷 386-395页

作者： Ting-Ting Lin Xue-jia Lai Wei-jia Xue Yin jia Cryptography and Information Security Laboratory Department of Computer Science Shanghai Jiao Tong University Shanghai 200240 China Irdeto Canada Ottawa Ontario K2K3G5 Canada

The white-box attack is a new attack context in which it is assumed that cryptographic software is implemented on an un-trusted platform and all the implementation details are controlled by the attackers. So far, almost all white-box solutions have been broken. In this study, we propose a white-box encryption scheme that is not a variant of obfuscating existing ciphers but a completely new solution. The new scheme is based on the unbalanced Feistel network as well as the ASASASA （where ＂A＂ means affine, and ＂S＂ means substitution） structure. It has an optional input block size and is suitable for saving space compared with other solutions because the space requirement grows slowly （linearly） with the growth of block size. Moreover, our scheme not only has huge white-box diversity and white-box ambiguity but also has a particular construction to bypass public white-box cryptanalysis techniques, including attacks aimed at white-box variants of existing ciphers and attacks specific to the ASASASA structure. More precisely, we present a definition of white-box security with regard to equivalent key, and prove that our scheme satisfies such security requirement.

关键词： white-box equivalent key Feistel network cryptography ASASASA

A recursive formulation for open-loop gyroelastic multibody dynamics

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Astrodynamics 2022年第3期6卷 301-316页

作者： Shiyuan jia Yinghong jia School of Automation Beijing University of Posts and TelecommunicationsBeijing 100876China School of Astronautics Beihang UniversityBeijing 100191China

In this paper,a general recursive formulation of equations of motion is presented for open-loop gyroelastic multibody *** gyroelastic multibody system is defined as a multibody system with gyroelastic bodies,whereas a gyroelastic body is composed of a flexible body with a cluster of double-gimbal variable-speed control moment gyroscopes(DGVs).First,the motion equations of a single gyroelastic body are derived using Kane’s *** influence of DGVs on the static moments,modal momentum coefficients,moments of inertia,modal angular momentum coefficients,and modal mass matrix for a flexible body are *** interactions between the DGVs and the flexibilities of the structures are *** recursive kinematic relations for a multibody system with different connections are then obtained from a flexible-flexible connection using a transformation *** different connections contain a flexible-flexible connection,which represents a flexible body connecting to another flexible body,flexible-rigid and rigid-rigid *** recursive gyroelastic multibody dynamics are obtained by analyzing the kinematics of a multibody system and the dynamics of a single gyroelastic *** simulations are presented to verify the accuracy and efficiency of the proposed approach by comparing it with a direct formulation based on Kane’s method.

关键词： recursive dynamics gyroelastic multibody system double-gimbal variable-speed control moment gyroscopes(DGVs) transformation matrix

Skeletal muscle-specific Bambi deletion induces hypertrophy and oxidative switching coupling with adipocyte thermogenesis against metabolic disorders

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Science China Life Sciences 2025年

作者： Xiangping Yao Xudong Mai Ye Tian Yifan Liu Guanghui Jin Ze Li Shujie Chen Xiaoshuang Dai Liujing Huang Zijing Fan Guihua Pan Xiaohan Pan Xiangmin Li Michael C Yu jia Sun Jingxing Ou Hong Chen Liwei Xie College of Life and Health Sciences Guangdong Industry Polytechnic Department of Endocrinology and Metabolism Zhujiang Hospital Southern Medical University State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied MicrobiologyInstitute of Microbiology Guangdong Academy of Sciences Institute of Aging Research Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics School of Medical Technology Guangdong Medical University Department of Hepatic Surgery and Liver transplantation Center of the Third Affiliated Hospital Organ Transplantation Institute Sun Yat-sen University Organ Transplantation Research Center of Guangdong ProvinceGuangdong province engineering laboratory for transplantation medicine Guangdong Provincial Key Laboratory of Liver Disease Research School of Public Health Xinxiang Medical University BGI Institute of Applied Agriculture BGI-Shenzhen Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Department of Biological Sciences State University of New York at Buffalo Department of Internal Medicine Shunde Women and Children's Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan) Guangdong Medical University

Skeletal muscle plays a significant role in both local and systemic energy metabolism. The current investigation aims to explore the role of the Bambi gene in skeletal muscle, focusing on its implications for muscle hypertrophy and systemic metabolism. We hypothesize that skeletal muscle-specific deletion of Bambi induces muscle hypertrophy, improves metabolic performance, and activates thermogenic adipocytes via the reprogramming of progenitor of i WAT, offering potential therapeutic strategies for metabolic syndromes. Leveraging the Chromatin immunoprecipitation(ChIP)-seq and bioinformatics analysis, Bambi gene is shown to be a direct target of HIF2α, which is further confirmed by ChIP-qPCR and promoter luciferase assay. Skeletal muscle-specific Bambi deletion led to significant muscle hypertrophy and improved metabolic parameters, even under high-fat diet conditions. This deletion induced metabolic reprogramming of stromal vascular fractions(SVFs) into thermogenic adipocytes, contributing to systemic metabolic improvements, potentially through the secretory ***, mice with skeletal muscle-specific Bambi deletion demonstrate resistance to high-fat diet-induced metabolic disorders, highlighting a potential therapeutic pathway for metabolic syndrome management. Thus, skeletal muscle-specific deletion of Bambi triggers muscle growth, enhances metabolic performance, and activates thermogenic adipocytes. These findings suggest Bambi as a novel therapeutic target for metabolic syndromes, providing new insights into the interaction between muscle hypertrophy and systemic metabolic improvement. The study underscores the potential of manipulating muscle physiology to regulate whole-body metabolism, offering a novel perspective on treating metabolic disorders.

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