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Testosterone is negatively associated with the severity of coronary atherosclerosis in men

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Asian Journal of Andrology 2012年第6期14卷 875-878页

作者： Li Li Chang-Yan Guo En-zhi jia Tie-Bing zhu Lian-Sheng Wang Ke-jiang Cao Wen-zhu Ma zhi-jian Yang Department of Cardiovascular Medicine First Affiliated Hospital of Nanjing Medical University Nanjing 210029 China

This study aimed to determine whether plasma testosterone is associated with the severity of coronary atherosclerosis in a group of 803 men who underwent elective coronary angiography. Testosterone levels were measured in 803 male patients who were categorized into three groups according to testosterone level tertiles. All patients underwent elective coronary angiography, and the severity of coronary artery disease （CAD） was determined by the Gensini score. Moreover, patients were classified into two groups according to Gensini scores （score ≤ 26 and score 〉26） using the median values as cutoff points. The plasma testosterone levels were measured by an ELISA kit. The level of testosterone was negatively associated with the Gensini score （r=-0. 188; P=0.000）. A multiple linear regression analysis revealed that testosterone was an independent risk factor for the Gensini score （β=-0,110; P=0.002） after adjusting for confounding covariates. In a multivariate logistic regression model, the severity of CAD was shown to be significantly lower in the third tertile （highest） of testosterone compared to the first tertile （lowest） of testosterone （odds ratio （0R）=0.465; 95% confidence interval （C1）. 0.327-0.662; P=0.000）. In this study, patients with lower testosterone levels had higher Gensini scores in a group of 803 men who underwent elective coronary angiography. Additional studies are needed to clarify the direction of causality and possible underlying mechanisms.

关键词： coronary artery disease (CAD) Gensini score testosterone

Study on Chemiluminescence Reactions of L ucigenin and Reductants by Flow Injection Analysis

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Chinese Chemical Letters 2000年第1期11卷 61-64页

作者： zhi jia zhu Jiu Ru LU (Experimental Center, Hebei Normal University. Shijiazhuang 050016 Department of Chemistry, Shaanxi Normal University, Xian 710062) Experimental Center Hebei Normal University Shijiazhuang 050016 China Department of Chemistry Shaanxi Normal University Xian 710062 China

The chemiluminescence reactions between lucigenin and reductants such as Mo(LII),V( II), U(III), W(III), Cr(II), Ti(III) and Fe( II), which were produced on-line by passing Mo(VI),V(V),U(VI), W(VI), Cr(VI,III),Ti(IV) and Fe(III) through a micro Jones column, are studied in detail. Results show that the reactions can be used directly for the determination of these substances. The mechanism of the reactions is also investigated.

关键词： reductant lucigenin chemiluminescence flow injection analysis

Water-requirement Characteristics and Water-saving Irrigation Indices of Dry-raised Rice Seedlings in Paddy Field

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Agricultural Sciences in China 2001年第1期 107-115页

作者： YANG jian-chang WANG Wei WANG zhi-qin LIU Li-jun DING zhi-jia zhu Qing-sen Agricultural College Yangzhou University Yangzhou 225009 Agricultural College Yangzhou University Yangzhou 225009 Agricultural College Yangzhou University Yangzhou 225009 Agricultural College Yangzhou University Yangzhou 225009 Seed Station of Yiling Township Jiangdu County Agricultural College Yangzhou University Yangzhou 225009

The dry-raised seedlings (D-RS)of rice had obvious superiority in tillering and growth after transplanting. Especially under the condition of water-saving irrigation or low soil moisture, D-RS had more productive tillers, higher dry matter accumulation, larger grain-filling rate, slower senescence of leaves and stronger root activity during ripening, and higher grain yield, compared with the moist-raised seedlings (MRS). D-RS had smaller yield reduction than M-RS when subject to heavy water stress. The results suggested that D-RS had the ability to adapt to lower soil moisture in paddy field. Basedon the response of D-RS to soil moisture at each growth stage, the water-saving and high-yielding irrigation indices through controlling lowlimit soil water potential were proposed, i.e. soil water potential was - 15 - - 20 kPa from the recovery to the criticalleaf-age of productive tillering, - 20 - - 40 kPa from the critical leaf-age of productive tillering to secondary branch-differentiating stage, - 15 - - 25 kPa from secondary branch-differentiating stage to 20 days after heading and - 25 - - 35 kPa from 21 to 45 days after heading.

关键词： Rice Dry-raised seedlings Soil water potential Irrigation indices

Deep learning for code generation: a survey

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Science China(Information Sciences) 2024年第9期67卷 5-40页

作者： Huangzhao ZHANG Kechi ZHANG zhuo LI jia LI jia LI Yongmin LI Yunfei ZHAO Yuqi zhu Fang LIU Ge LI zhi JIN Key Lab of High Confidence Software Technologies (Peking University) Ministry of Education School of Computer Science Peking University School of Computer Science and Engineering Beihang University

In the past decade, thanks to the powerfulness of deep-learning techniques, we have witnessed a whole new era of automated code generation. To sort out developments, we have conducted a comprehensive review of solutions to deep learning-based code generation. In this survey, we generally formalize the pipeline and procedure of code generation and categorize existing solutions according to taxonomy from perspectives of architecture, model-agnostic enhancing strategy, metrics, and tasks. In addition, we outline the challenges faced by current dominant large models and list several plausible directions for future research. We hope that this survey may provide handy guidance to understanding, utilizing, and developing deep learning-based code-generation techniques for researchers and practitioners.

关键词： code generation automated software engineering deep learning large model artificial intelligence

Analysis of factors impacting postoperative pain and quality of life in patients with mixed hemorrhoids:A retrospective study

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 731-739页

作者： Xiao-Wen Sun Jing-Yi Xu Chang-Zhen zhu Si-jia Li Lu-jia Jin zhi-Dong zhu Department of Gastrointestinal Surgery Tsinghua University Affiliated Beijing Tsinghua Changgeng HospitalBeijing 102218China Surgical Department Tsinghua University Affiliated Beijing Tsinghua Changgeng HospitalBeijing 102218China

BACKGROUND Hemorrhoids are among the most common and frequently encountered chronic anorectal diseases in anorectal *** are venous clusters formed by con-gestion,expansion,and flexion of the venous plexus in the lower part of the *** hemorrhoids bleed easily and recurrently,and this can result in severe ***,they may have a negative effect on the health of the patient and surgical treatment is ***-Morgan hemorrhoidectomy has been widely used since 1937 for the treatment of grade III and IV ***-ever,most patients experience different degrees of postoperative pain that may cause *** mixed hemorrhoids *** The clinical data of patients with mixed hemorrhoids who underwent Milligan-Morgan hemorrhoidectomy were collected *** basic character-istics of the enrolled patients with mixed hemorrhoids were recorded,and based on the Goligher clinical grading system,the hemorrhoids were classified as grades III or *** endpoint of this study was the disappearance of pain in all *** data were presented as mean±SD,such as age,pain score,and QoL ***’s t-test was used to compare the *** A total of 164 patients were *** distribution of the visual analog scale pain scores of all patients at 3,7,14 and 28 d after surgery showed that post-surgery pain was significantly reduced with the passage of *** days after the operation,the pain had completely disappeared in some ***-eight days after the surgery,none of the patients experienced any *** the World Health Or-ganization Quality of Life-BREF self-reporting questionnaire scores of patients between 14 and 28 d after surgery,we observed that the quality-of-life scores of the patients post-surgery had significantly *** were six items that were compared at 14-and 28-d *** mean QoL score 28 d after surgery(4.79±0.46)was higher than that at 14 d p

关键词： Hemorrhoids Mixed hemorrhoids Milligan organ hemorrhoidectomy Postoperative pain Quality of life Anesthesia mode

Designing hierarchical structures for innovative cooling textile

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Nano Research 2024年第10期17卷 9202-9224页

作者： Xiran Du Jinlei Li Bin zhu jia zhu National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210023China School of Sustainable Energy and Resources Nanjing UniversitySuzhou 215163China

The potential of personal cooling technologies in reducing air conditioning energy consumption and enhancing human thermal comfort is *** review focuses on recent advancements in hierarchical structure design for innovative cooling *** with insights into fundamental heat transfer processes between the human body,textile,and the surroundings,we uncover key control *** the advanced hierarchical structure designs enabling effective radiation,sweat evaporation,conduction management,and integration of cold energy sources for realizing effective human body cooling are systematically ***,we explore multifunctional designs beyond cooling,including switchable cooling-heating and ***,we engage in discussions on unifying cooling performance tests and additional multiple requirements to make strides toward practical *** review is anticipated to be a valuable resource,providing the scientific and industrial communities with a quick grasp of past advancements,current challenges,and future directions in achieving effective human body cooling.

关键词： thermal comfort personal cooling textile hierarchical structures

Ballistic performances of the hourglass lattice sandwich structures under high-velocity fragments

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Defence Technology（防务技术） 2024年第1期31卷 312-325页

作者： He-xiang Wu jia Qu Lin-zhi Wu Key Laboratory of Advanced Ship Materials and Mechanics College of Aerospace and Civil EngineeringHarbin Engineering UniversityHarbin150001China School of Civil Engineering Northeast Forestry UniversityHarbin150040China

In this paper,the numerical simulation method is used to study the ballistic performances of hourglass lattice sandwich structures with the same mass under the vertical incidence of *** is paid to elucidating the influences of rod cross-section dimensions,structure height,structure layer,and rod inclination angle on the deformation mode,ballistic performances,and ability to change the ballistic direction of *** results show that the ballistic performances of hourglass lattice sandwich structures are mainly affected by their structural *** this respect,structural parameters optimization of the hourglass lattice sandwich structures enable one to effectively improve their ballistic limit velocity and,consequently,ballistic performances.

关键词： Hourglass lattice sandwich structures Ballistic performances high-velocity Finite element analysis

Contribution of high-latitude permafrost regions in the Northern Hemisphere to global wildfire carbon emissions

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Science China Earth Sciences 2024年第10期67卷 3239-3251页

作者： Xingru zhu Xiyan XU Gensuo jia Key Laboratory of Regional Climate-Environment for East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

Wildfires are major disturbances in permafrost ecosystems, with increasing frequency and intensity in recent years. In permafrost regions, wildfires not only burn surface and subsurface organic matter but also accelerate permafrost thawing,releasing significant amounts of greenhouse gases such as carbon dioxide and methane into the atmosphere. However, the contribution of high-latitude permafrost regions in the Northern Hemisphere to global wildfire carbon emissions remains poorly understood. This study integrates remote sensing data and ground observations to analyze the contributions of aboveground and belowground fuel combustion in high-latitude permafrost regions to global wildfire carbon emissions from 2002 to 2020, as well as the spatiotemporal variations in these contributions. Our findings indicate that permafrost regions contribute approximately11.96% of global wildfire carbon emissions, with aboveground emissions accounting for approximately 3.94% of global aboveground emissions and belowground emissions contributing approximately 63.57% of global belowground emissions. The contribution of high-latitude permafrost regions to global emissions peaked in July and August, whereas the continuous permafrost zones(areas with more than 90% permafrost coverage) showed the most significant increase in June and July. The contributions of both aboveground and belowground emissions from high-latitude permafrost regions to global wildfire emissions have been increasing, primarily due to the reduction in global wildfire emissions, in contrast with the rising emissions from wildfires in high-latitude permafrost regions. This study highlights the significant role of wildfires, particularly the combustion of belowground biomass in high-latitude permafrost regions, in global carbon emissions. The decomposition and combustion of organic carbon in permafrost regions due to wildfires release more greenhouse gases into the atmosphere, potentially amplifying the positive feedback

关键词： Wildfire Permafrost Carbon emissions Climate change Belowground fuel consumption

Chemoselective epoxidation of electron-deficient olefins with molecular oxygen via conjugated olefins epoxidation and BHT hydroxylation

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Science China Chemistry 2024年第9期67卷 3012-3018页

作者： jia Nie Huanfeng jiang Chuanle zhu School of Chemistry and Chemical Engineering Key Lab of Functional Molecular Engineering of Guangdong ProvinceSouth China University of TechnologyGuangzhou 510640China Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing South China University of TechnologyGuangzhou 510640China

The chemoselective epoxidation of electron-deficient olefins in the presence of electron-rich alkene moieties is *** chemoselective epoxidation strategy undergoes a conjugated olefin epoxidation and BHT hydroxylation process to give various useful oxiranes in high yields,especially for the 2-substituted ***,this protocol features mild conditions,is transition-metal free,operationally simple,and gram-scalable,and tolerates diverse functional *** candidate HSD-16 is synthesized smoothly by this *** studies indicate molecular oxygen is the terminal oxidant and the O-source of the oxiranes.

关键词： chemoselective epoxidation alkene fluorine molecular oxygen