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宋元时期蒸青制茶技艺东传及发展考略

中国农史 2022年第3期41卷 44-54页

作者：袁祯清宋伟中国科学技术大学科技史与科技考古系安徽合肥230026

宋元时期是我国乃至世界历史上蒸青制茶的辉煌时期,此时期我国与东亚的高丽、日本外交贸易频繁,三国之中以我国的蒸青制茶技艺为引领,高丽、日本则不断效仿,从而发展出符合本国需求的蒸青制茶技艺。本文阐述了高丽主要传承我国的蒸青片... 详细信息

宋元时期是我国乃至世界历史上蒸青制茶的辉煌时期,此时期我国与东亚的高丽、日本外交贸易频繁,三国之中以我国的蒸青制茶技艺为引领,高丽、日本则不断效仿,从而发展出符合本国需求的蒸青制茶技艺。本文阐述了高丽主要传承我国的蒸青片茶制茶技艺,并制造了具有本国特点的“脑原茶”和“绿苔钱”;而日本则主要传承我国蒸青散茶制茶技艺,并逐渐发展成具有本国特色的静冈蒸青草茶和宇治蒸青抹茶。最后,本文尝试从经济、政治、文化、自然四个方面分析高丽、日本制茶技艺发展的原因。

关键词：宋元时期蒸青制茶高丽日本

红松种子休眠状态的变化调控种子萌发的季节性时间

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Journal of Plant Ecology 2023年第2期16卷 102-113页

作者： Yuan Song Mingyi Zhang Yun Guo Xiaoye Gao College of Eco-Environmental Engineering Guizhou Minzu UniversityGuiyang 550025China The Karst Environmental Geological Hazard Prevention Laboratory of Guizhou Minzu University Guiyang 550025China

种子休眠能够确保幼苗在一个季节性变化的环境中选择适宜的季节建植。红松(Pinus koraiensis)种子在秋季落下之后具有形态生理休眠。一小部分种子在落下之后的第一个春季萌发,但大部分种子在第二个春季萌发,目前尚不清楚休眠状态如何驱... 详细信息

种子休眠能够确保幼苗在一个季节性变化的环境中选择适宜的季节建植。红松(Pinus koraiensis)种子在秋季落下之后具有形态生理休眠。一小部分种子在落下之后的第一个春季萌发,但大部分种子在第二个春季萌发,目前尚不清楚休眠状态如何驱动这种萌发特性。在2018年10月中旬,在中国东北黑龙江省丰林国家级自然保护区的凋落物和土层之间埋藏新鲜的红松种子,并且隔一段时间取出,测定种子的野外萌发率、种胚生长情况、种子活力和室内萌发率。形态生理休眠的生理休眠部分在第一个冬季逐渐解除,但在第一个夏季被再次诱导;再次被诱导的生理休眠在第二个秋、冬季解除。形态生理休眠的形态休眠部分在第一个夏季逐渐缓慢解除,但在第二个早、中秋季迅速解除。在第二个春季,红松种子完全解除形态生理休眠。种子的生理休眠解除,但形态休眠仍然存在,导致其在第一个春季的野外萌发率非常低。种子的形态和生理休眠均解除,导致大部分种子能在第二个春季相对较低的温度(昼夜温度在10/5°C以上)下萌发。红松种子为形态生理休眠种子的休眠状态变化研究提供了示例。

关键词：红松(Pinus koraiensis) 原生休眠形态生理休眠种胚生长种子萌发时间

Effect of cold stratification on the temperature range for germination of Pinus koraiensis

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Journal of Forestry Research 2023年第1期34卷 221-231页

作者： Yuan Song Xinghuan Li Mingyi Zhang Guowei Xia Chao Xiong College of Eco-Environmental Engineering Guizhou Minzu UniversityGuiyangPeople’s Republic of China Qingyuan Forest CERN Chinese Academy of SciencesShenyang 110016People’s Republic of China Karst Environmental Geological Hazard Prevention Laboratory of Guizhou Minzu University GuiyangPeople’s Republic of China Guiyang Institute of Information Science and Technology GuiyangPeople’s Republic of China

Germination at low spring temperatures may offer a competitive advantage for the growth and survival of plant species inhabiting temperate forest ecosystems.Pinus koraiensis is a dominant species in temperate forests of northeastern China.Its seeds exhibit primary morphophysiological dormancy following dispersal in autumn,limiting natural or artificial regeneration:direct seeding and planting seedlings in spring.The aim of this study was to determine the optimum cold stratification temperature that induces germination to increase towards lower temperatures.Seeds from two populations(Changbaishan and Liangshui)were cold stratified at 0,5 and 10℃.Germination to incubation temperatures(10/5,20/10,25/15 and 30/20℃;14/10 h day/night)were determined after 2 and 4 weeks,and 5.5 and6.5 months of cold stratification.After 5.5 months,approximately 68-91%of seeds from both populations germinated at incubation temperatures of 25/15℃and 30/20℃,regardless of cold stratification temperatures.When the cold stratification temperature was reduced to 0℃and the period increased to 6.5 months,germination at 10/5℃significantly improved,reaching 37%and 64%for the Changbaishan and Liangshui populations,respectively.After 6.5 months of cold stratification,there was a significant linear regression between cold stratification temperatures and germination at10/5℃.The range in temperatures allowing for germination gradually expanded to include lower temperatures with decreasing cold stratification temperatures from 10 to 5℃and further to 0℃.

关键词： Cold Stratification temperatures Pinus koraiensis Seed germination Germination temperature range

Large-scale model test study on the water pressure resistance of construction joints of karst tunnel linings

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Frontiers of Structural and Civil Engineering 2023年第8期17卷 1249-1263页

作者： Meng HUANG Mingli HUANG Ze YANG Yuan Song Zhien ZHANG School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China Enterprise Key Laboratory Tianjin Municipal Engineering Design and Research InstituteTianjin 300392China School of Civil Engineering and Architecture Anhui University of Science and TechnologyHuainan 232001China

Model tests and numerical calculations were adopted based on the New yuanliangshan tunnel project to investigate the water pressure resistance of lining construction joints in high-pressure and water-rich karst tunnels.A large-scale model test was designed and conducted,innovatively transforming the external water pressure of the lining construction joint into internal water pressure.The effects of the embedded position and waterstop type on the water pressure resistance of the construction joint were analyzed,and the reliability of the model test was verified via numerical calculations.The results show that using waterstops can significantly improve the water pressure resistance of lining construction joints.The water pressure resistance of the lining construction joint is positively correlated with the lining thickness and embedded depth of the waterstop.In addition,the type of waterstop significantly influences the water pressure resistance of lining construction joints.The test results show that the water pressure resistance of the embedded transverse reinforced waterstop is similar to that of the steel plate waterstop,and both have more advantages than the rubber waterstop.The water pressure resistance of the construction joint determined via numerical calculations is similar to the model test results,indicating that the model test results have high accuracy and reliability.This study provides a reference for similar projects and has wide applications.

关键词： karst tunnel lining construction joint water pressure resistance large-scale model test numerical calculations

Trial application of the envelope method to the potential ambiguity problem

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Nuclear Science and Techniques 2024年第1期35卷 73-80页

作者： Li-yuan Hu Yu-Shou song Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering UniversityHarbin 150001China College of Nuclear Science and Technology Harbin Engineering UniversityHarbin 150001China Key Laboratory of Nuclear Safety and Advanced Nuclear Energy Technology Ministry of Industry and Information TechnologyHarbin 150001China

The optical potential ambiguity is a long-standing problem in the analysis of elastic scattering data.For a specific collid-ing system,ambiguous potential families can lead to different behaviors in the nearside and farside scattering components.By contrast,the envelope method can decompose the experimental data into two components with negative and positive deflection angles,respectively.Hence,a question arises as to whether the comparison between the calculated nearside(or farside)component and the derived positive-deflection-angle(or negative-deflection-angle)component can help analyze the potential ambiguity problem.In this study,we conducted a trial application of the envelope method to the potential ambiguity problem.The envelope method was improved by including uncertainties in the experimental data.The colliding systems of 16O+28Si at 215.2 MeV and 12C+12C at 1016 MeV were considered in the analyses.For each colliding system,the angular distribution experimental data were described nearly equally well by two potential sets,one of which is“surface transpar-ent”and the other is refractive.The calculated angular distributions were decomposed into nearside and farside scattering components.Using the improved envelope method,the experimental data were decomposed into the positive-deflection-angle and negative-deflection-angle components,which were then compared with the calculated nearside and farside components.The capability of the envelope method to analyze the potential ambiguities was also discussed.

关键词： Elastic scattering Optical potential ambiguities Envelope method Nearside/farside decomposition

Crosstalk between bone and other organs

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Medical Review 2022年第4期2卷 331-348页

作者： Wanqiong yuan Chunli song Department of Orthopedics Peking University Third HospitalBeijingChina Beijing Key Laboratory of Spinal Disease BeijingChina Engineering Research Center of Bone and Joint Precision Medicine BeijingChina Department of Orthopedics Peking University Third HospitalNo.49North Garden RoadHaidian DistrictBeijing 100919China

Bone has long been considered as a silent organ that provides a reservoir of calcium and phosphorus,traditionally.Recently,further study of bone has revealed additional functions as an endocrine organ connecting systemic organs of the whole body.Communication between bone and other organs participates in most physiological and pathological events and is responsible for the maintenance of homeostasis.Here,we present an overview of the crosstalk between bone and other organs.Furthermore,we describe the factors mediating the cross-talk and review the mechanisms in the development of potential associated diseases.These connections shed new light on the pathogenesis of systemic diseases and provide novel potential targets for the treatment of systemic diseases.

关键词： bone crosstalk endocrine organs osteocalcin osteokines receptor activator for nuclear factor-κB ligand

Imaging-based deep learning in liver diseases

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Chinese Medical Journal 2022年第11期135卷 1325-1327页

作者： Enyu yuan Zheng Ye Bin song West China School of Medicine Sichuan UniversityChengduSichuan 610041China Department of Radiology West China HospitalChengduSichuan 610041China Department of Radiology Sanya People’s HospitalSanya/West China(Sanya)HospitalSanyaHainan 572022China

Liver disease is a collective term for hepatic damage caused by heterogeneous etiologies and poses a heavy health burden worldwide.Modern medical imaging,such as computed tomography(CT),magnetic resonance imaging(MRI),and ultrasonography,plays an essential role in the diagnosis and management of liver diseases.Imaging-based deep learning(DL)is one of the most actively investigated techniques in recent decade.It enables high-dimensional features extraction through the layered structures and can be used in a variety of clinical scenarios,especially with the convolutional neural network in computer vision.

关键词： diagnosis liver Liver

Upregulation of miR-143-3p attenuates oxidative stress-mediated cell ferroptosis in cardiomyocytes with atrial fibrillation by degrading glutamic-oxaloacetic transaminase 1

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BIOCELL 2021年第3期45卷 733-744页

作者： Yuan Song CAI WEI JINGJING WANG Department of Functional Examination The Sixth Affiliated Hospital of Xinjiang Medical UniversityUrumqi830000China Health Care Third Department Xinjiang Military Region General HospitalUrumqi830000China Department of Emergency The People’s Hospital of Suzhou New DistrictSuzhou215000China

Oxidative stress-mediated cell death in cardiomyocytes contributes to the development of atrial fibrillation.However,the detailed mechanisms are still unclear.In the present study,we established atrial fibrillation models in mice.The cardiomyocytes were isolated from atrial fibrillation mice and normal mice and were cultured in vitro,respectively.The results showed that cell proliferation and viability in cardiomyocytes with atrial fibrillation were significantly lower than the cells from the normal mice.Consistently,atrial fibrillation cardiomyocytes were prone to suffer from apoptotic cell death.Also,the oxidative stress and ferroptosis-associated signatures were significantly increased in atrial fibrillation cardiomyocytes compared to normal cardiomyocytes,and ferroptosis inhibitor and NAC rescued cell viability in atrial fibrillation cardiomyocytes during in vitro cell culture.In addition,low-expressed miR-143-3p was observed in atrial fibrillation cardiomyocytes compared to normal cardiomyocytes,and overexpression of miR-143-3p increased cell proliferation and inhibited cell death in atrial fibrillation cardiomyocytes.Furthermore,glutamic-oxaloacetic transaminase 1 could be negatively regulated by miR-143-3p in normal cardiomyocytes,and miR-143-3p overexpression inhibited cell ferroptosis in atrial fibrillation cardiomyocytes by sponging glutamic-oxaloacetic transaminase 1.Collectively,overexpression of miR-143-3p increased cell viability and promoted cell proliferation in cardiomyocytes with atrial fibrillation by inhibiting glutamic-oxaloacetic transaminase 1 mediated oxidative damages and cell ferroptosis.

关键词： Atrial fibrillation Ferroptosis Cardiomyocytes MiR-143-3p Glutamic-oxaloacetic transaminase 1 Ferrostatin-1

Automatic modelling of urban subsurface with ground-penetrating radar using multi-agent classification method

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Geo-Spatial Information Science 2022年第4期25卷 588-599页

作者： Tess Xianghuan Luo Pengpeng yuan song Zhu Guangdong Key Laboratory of Urban Informatics Shenzhen UniversityShenzhenChina Department of Land Surveying and Geo-informatics The Hong Kong Polytechnic UniversityHong KongChina College of Civil and Transportation Engineering Shenzhen UniversityShenzhenChina

The subsurface of urban cities is becoming increasingly congested.In-time records of subsur-face structures are of vital importance for the maintenance and management of urban infrastructure beneath or above the ground.Ground-penetrating radar(GPR)is a nondestructive testing method that can survey and image the subsurface without excava-tion.However,the interpretation of GPR relies on the operator’s experience.An automatic workflow was proposed for recognizing and classifying subsurface structures with GPR using computer vision and machine learning techniques.The workflow comprises three stages:first,full-cover GPR measurements are processed to form the C-scans;second,the abnormal areas are extracted from the full-cover C-scans with coefficient of variation-active contour model(CV-ACM);finally,the extracted segments are recognized and classified from the corresponding B-scans with aggregate channel feature(ACF)to produce a semantic map.The selected computer vision methods were validated by a controlled test in the laboratory,and the entire workflow was evaluated with a real,on-site case study.The results of the controlled and on-site case were both promising.This study establishes the necessity of a full-cover 3D GPR survey,illustrating the feasibility of integrating advanced computer vision techniques to analyze a large amount of 3D GPR survey data,and paves the way for automating subsurface modeling with GPR.

关键词： Subsurface modeling ground-penetrating radar computer vision active contour model aggregate channel feature