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Advancing gravitational theory through the tetrahedral constellation gravitational wave observatory

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： yun-yong wang Zhou-Jian Cao Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University

The Tetrahedral Constellation Gravitational Wave Observatory (TEGO)[1]represents a significant leap forward in gravitational wave detection,advancing our understanding of gravitational *** introducing a fourth spacecraft to form a tetrahedral configuration,TEGO enhances traditional triangular setups,enabling the simultaneous sensitivity to all six gravitational wave polarization modes,including those not predicted by general relativity.

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Clinicopathologic characteristics of esophagectomy for esophageal carcinoma in elderly patients

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World Journal of Gastroenterology 2006年第8期12卷 1296-1299页

作者： Jian-Yang Ma Zhu Wu yun wang yong-Fan Zhao Lun-Xu Liu Ying-Li Kou Qing-Hua Zhou Department of Thoracic and Cardiovascular Surgery West China Hospital Sichuan UniversityChengdu 610041 Sichuan Province China

AIM： To evaluate the risk of esophagectomy for carcinoma of the esophagus in the elderly （70 years or more） compared with younger patients （〈70 years） and to determine whether the short-term outcomes of esophagectomy in the elderly have improved in recent years. METHODS： Preoperative risks, postoperative morbidity and mortality in 60 elderly patients （≥70 years） with esophagectomy for carcinoma of the esophagus were compared with the findings in 1 782 younger patients （〈70 years） with esophagectomy between 3anuary 1990 and December 2004. Changes in perioperative outcome and short-time survival in elderly patients between 1990 to 1997 and 1998 to 2004 were separately analyzed. RESULTS： Preoperatively, there were significantly more patients with hypertension, pulmonary dysfunction, cardiac disease, and diabetes mellitus in the elderly patients as compared with the younger patients. No significant difference was found regarding the operation time, blood loss, organs in reconstruction and anastomotic site between the two groups, but elderly patients were more often to receive blood transfusion than younger patients. Significantly more transhiatal and fewer transthoracic esophagectomies were performed in the elderly patients as compared with the younger patients. Resection was considered curative in 71.66% （43/60） elderly and 64.92% （1 157/1 782） younger patients, which was not statistically significant （P〉0.05）. There were no significant differences in the prevalence of surgical complications between the two groups. Postoperative cardiopulmonary medical complications were encountered more frequently in elderly patients. The hospital mortality rate was 3.3% （2/60） for elderly patients and 1.1% （19/1 782） for younger patients without a significant difference. When the study period was divided into a former （1990 to 1997） and a recent （1997 to 2004） period,operation time, blood loss, and percentage of patients receiving blood transfusion of the elderly patients signifi

关键词： Esophagectomy Carcinoma Esophagus

Atrial fibrillation after surgery for esophageal carcinoma:Clinical and prognostic significance

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World Journal of Gastroenterology 2006年第3期12卷 449-452页

作者： Jian-Yang Ma yun wang yong-Fan Zhao Zhu Wu Lun-Xu Liu Ying-Li Kou Jun-Jie Yang Department of Thoracic and Cardiovascular Surgery West China Hospital Sichuan UniversityChengdu 610041 Sichuan Province China

AIM： To retrospectively evaluate the clinical relevance, perioperative risk factors, outcome of different pharmacological prophylaxis, and short-term prognostic value of atrial fibrillation （AF） after surgery for esophageal carcinoma. METHODS： We retrospectively studied 63 patients with AF after surgery for esophageal carcinoma in comparison with 126 patients without AF after esophagectomy during the same time. Postoperative AF incidence was related to different clinical factors possibly involved in its occurrence and short-term survival. RESULTS： A strong relationship was observed between AF and postoperative hypoxia, history of chronic obstructive pulmonary disease （COPD）, postoperative thoracic-gastric dilatation, age older than 65 years, male sex and history of cardiac disease. No difference was observed between the two groups with regard to shortterm mortality and length of hospital stay. CONCLUSIONS： AF occurs more frequently after esophagectomy in aged and male patients. Other factors contributing to postoperative AF are history of COPD and cardiac disease, postoperative hypoxia and thoracicgastric dilatation.

关键词： Esophageal carcinoma Atrial fibrillation Surgery

Theoretical Analyses of 4f^11→4f^105d Excitation Spectra of Er^3＋ Doped in LiYF4

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Chinese Journal of Structural Chemistry 2005年第1期24卷 1-1页

作者： LI Cai-yun wang yong-Ming (Department of Basic Course, Chinese People’s Armed Police Force Academy, Langfang 065000, China) DepartmentofBasicCourse ChinesePeople＇sArmedPoliceForceAcademyLangfang065000China

Spectral terms and J-spectral multiplet of low-spin 4f105d configuration of Er3+ were obtained with the method of ligand field theory. According to the selection rules for dipole transitions, the excitation spectra of Er3+ doped in LiYF4 in vacuum ultraviolet region (120～160 nm) of the spectrum were theoretically interpreted by applying the crystal field model, and the six bands were assigned to the spin-allowed transitions from the ground state (4I15/2) to J-spectral multiplet of low-spin 4f105d configuration of Er3+ion.

关键词： LiYF_4 crystal Er^(3+) ion fd excitation spectra theoretical analysis

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The Hilbert expansion of the Boltzmann equation in the incompressible Euler level in a channel

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Science China Mathematics 2025年第1期68卷 39-88页

作者： Feimin Huang Weiqiang wang yong wang Feng Xiao Academy of Mathematics and Systems Science Chinese Academy of Sciences School of Mathematical Sciences University of Chinese Academy of Sciences Key Laboratory of Computing and Stochastic Mathematics (Ministry of Education) School of Mathematics and StatisticsHunan Normal University

The study of the hydrodynamic limit of the Boltzmann equation with physical boundary is a challenging problem due to the appearance of the viscous and Knudsen boundary *** this paper,the hydrodynamic limit from the Boltzmann equation with the specular reflection boundary condition to the incompressible Euler equations in a channel is *** on the multi-scaled Hilbert expansion,the equations with boundary conditions and compatibility conditions for interior solutions,and viscous and Knudsen boundary layers are derived under different scaling,***,some uniform estimates for the interior solutions,and viscous and Knudsen boundary layers are *** the help of the L2-L∞framework and the uniform estimates obtained above,the solutions to the Boltzmann equation are constructed by the truncated Hilbert expansion with multiscales,and hence the hydrodynamic limit in the incompressible Euler level is justified.

关键词： Boltzmann equation incompressible Euler equations hydrodynamic limit Hilbert expansion specular reflection boundary condition viscous boundary layer Knudsen boundary layer

Dative B–N bonds weaven toward two-dimensional purely organic materials for single crystals

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Science China Chemistry 2025年第1期68卷 12-14页

作者： Wei-Lei Zhou Siwei wang yong Chen College of Chemistry and Materials Science Inner Mongolia Key Laboratory of Chemistry for Nature Products and Synthesis for Functional Molecules Innovation Team of Optical Functional Molecular Devices Inner Mongolia Minzu University College of Chemistry Nankai University

Molecular topology is one of the important topics to study and understand the relationship between molecular structure and properties [1]. Particularly, two-dimensional (2D) materials with extremely high surface area and ultra-thin morphology have attracted considerable attention due to their unexpected properties in materials and chemistry [2,3].

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Industrial Control Anomaly Detection Based on Distributed Linear Deep Learning

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Computers, Materials & Continua 2025年第1期82卷 1129-1150页

作者： Shijie Tang yong Ding Huiyong wang School of Computer Science and Information Security Guilin University of Electronic TechnologyGuilin541004China School of Electronic Engineering and Automation Guilin University of Electronic TechnologyGuilin541004China Guangxi Engineering Research Center of Industrial Internet Security and Blockchain Guilin University of Electronic TechnologyGuilin541004China Institute of Cyberspace Technology HKCT Institute for Higher EducationHong Kong999077China School of Mathematics&Computing Science Guilin University of Electronic TechnologyGuilin541004China

As more and more devices in Cyber-Physical Systems(CPS)are connected to the Internet,physical components such as programmable logic controller(PLC),sensors,and actuators are facing greater risks of network attacks,and fast and accurate attack detection techniques are *** key problem in distinguishing between normal and abnormal sequences is to model sequential changes in a large and diverse field of time *** address this issue,we propose an anomaly detection method based on distributed deep *** method uses a bilateral filtering algorithm for sequential sequences to remove noise in the time series,which can maintain the edge of discrete *** use a distributed linear deep learning model to establish a sequential prediction model and adjust the threshold for anomaly detection based on the prediction error of the validation *** method can not only detect abnormal attacks but also locate the sensors that cause *** conducted experiments on the Secure Water Treatment(SWAT)and Water Distribution(WADI)public *** experimental results show that our method is superior to the baseline method in identifying the types of attacks and detecting efficiency.

关键词： Anomaly detection CPS deep learning MLP(multi-layer perceptron)

IoT Empowered Early Warning of Transmission Line Galloping Based on Integrated Optical Fiber Sensing and Weather Forecast Time Series Data

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Computers, Materials & Continua 2025年第1期82卷 1171-1192页

作者： Zhe Li yun Liang Jinyu wang Yang Gao State Grid Henan Electric Power Company Electric Power Scientific Research Institute State Grid Henan Electric Power CompanyZhengzhou450052China

Iced transmission line galloping poses a significant threat to the safety and reliability of power systems,leading directly to line tripping,disconnections,and power *** early warning methods of iced transmission line galloping suffer from issues such as reliance on a single data source,neglect of irregular time series,and lack of attention-based closed-loop feedback,resulting in high rates of missed and false *** address these challenges,we propose an Internet of Things(IoT)empowered early warning method of transmission line galloping that integrates time series data from optical fiber sensing and weather ***,the method applies a primary adaptive weighted fusion to the IoT empowered optical fiber real-time sensing data and weather forecast data,followed by a secondary fusion based on a Back Propagation(BP)neural network,and uses the K-medoids algorithm for clustering the fused ***,an adaptive irregular time series perception adjustment module is introduced into the traditional Gated Recurrent Unit(GRU)network,and closed-loop feedback based on attentionmechanism is employed to update network parameters through gradient feedback of the loss function,enabling closed-loop training and time series data prediction of the GRU network ***,considering various types of prediction data and the duration of icing,an iced transmission line galloping risk coefficient is established,and warnings are categorized based on this ***,using an IoT-driven realistic dataset of iced transmission line galloping,the effectiveness of the proposed method is validated through multi-dimensional simulation scenarios.

关键词： Optical fiber sensing multi-source data fusion early warning of galloping time series data IoT adaptive weighted learning irregular time series perception closed-loop attention mechanism

Trinuclear gold-catalyzed site-selective alkylation of peptides

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Science China Chemistry 2025年第1期68卷 249-256页

作者： Qing-yun Fang Chengyihan Gu Yinghan Chen Wencheng Yan yong Liang Weipeng Li Chengjian Zhu Jie Han Jin Xie State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Chemistry and Biomedicine Innovation Center (Chem BIC) School of Chemistry and Chemical Engineering Nanjing University Green Catalysis Center College of Chemistry Zhengzhou University State Key Laboratory of Natural Medicines China Pharmaceutical University

Selective modification of peptides has always been a challenging issue. The selective alkylation of peptides can alter the biological activity and physical properties of molecules, and it has gained significant research interest. We herein disclose an intriguing gold-catalyzed alkylation of peptides using bench-stable unactivated alkyl bromides under photoredox catalysis. A wide range of structurally diverse primary, secondary and tertiary alkyl bromides serve as effective coupling partners to precisely connect with the α-C(sp3)–H in glycine residue of peptides. This protocol demonstrates an exceptionally broad scope for alkyl halides and excellent tolerance for a wide range of useful functional groups. A series of relay transformations to construct cyclic peptides, to proceed click reaction and to realize peptide fluorescence labeling further enhance its synthetic practicality. In addition, mechanistic studies and density functional theory(DFT) calculations reveal an inner-sphere and subsequent outersphere single electron transfer(SET) mechanism.

关键词： gold catalysis peptide alkylation C-C coupling radical

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