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Subgenome asymmetry of gibberellins-related genes plays important roles in regulating rapid growth of bamboos

Plant Diversity 2025年第1期47卷 68-81页

作者： Ling Mao Cen Guo Liang-Zhong Niu Yu-Jiao Wang Guihua Jin Yi-Zhou Yang ke-cheng Qian Yang Yang Xuemei Zhang Peng-Fei Ma De-Zhu Li Zhen-Hua Guo Germplasm Bank of Wild Species&Yunnan key Laboratory of Crop Wild Relatives Omics Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China University of Chinese Academy of Sciences Beijing 100049China State key Laboratory of Plant Diversity and Specialty Crops Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Center for Integrative Conservation&Yunnan key Laboratory for the Conservation of Tropical Rainforests and Asian Elephants Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglunMenglaYunnan 666303China Yunnan key Laboratory of Dai and Yi Medicines Yunnan University of Chinese MedicineKunmingYunnan 650500China

Rapid growth is an innovative trait of woody bamboos that has been widely ***,the genetic basis and evolution of this trait are poorly *** advantage of genomic resources of 11 representative bamboos at different ploidal levels,we integrated morphological,physiological,and transcriptomic datasets to investigate rapid *** particular,these bamboos include two large-sized and a small-sized woody species,compared with a diploid herbaceous *** results showed that gibberellin A1 was important for the rapid shoot growth of the world's largest bamboo,Dendrocalamus sinicus,and indicated that two gibberellins(GAs)-related genes,KAO and SLRL1,were key to the rapid shoot growth and culm size in woody *** expression of GAs-related genes exhibited significant subgenome asymmetry with subgenomes A and C demonstrating expression dominance in the large-sized woody bamboos while the generally submissive subgenomes B and D dominating in the small-sized *** subgenome asymmetry was found to be correlated with the subgenome-specific gene structure,particularly UTRs and core *** study provides novel insights into the molecular mechanism and evolution of rapid shoot growth following allopolyploidization in woody bamboos,particularly via subgenome *** findings are helpful for understanding of how polyploidization in general and subgenome asymmetry in particular contributed to the origin of innovative traits in plants.

关键词： Allopolyploids GAs DEGs Culm sizes Rapid shoot growth Woody bamboos

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Interparticle-friction-induced anomalous colloid structure

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Chinese Physics B 2025年第1期34卷 150-160页

作者： Fuzhou Liu Yu Ding Longfei Li ke cheng Fangfu Ye Mingcheng Yang Beijing National Laboratory for Condensed Matter Physics and CAS key Laboratory of Soft Matter Physics Institute of PhysicsChinese Academy of Sciences(CAS)Beijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Wenzhou Institute University of Chinese Academy of SciencesWenzhou 325001China Oujiang Laboratory(Zhejiang Laboratory for Regenerative Medicine Vision and Brain Health)Wenzhou 325000China Songshan Lake Materials Laboratory Dongguan 523808China

Interparticle frictional interactions are ubiquitous in colloidal systems,exerting a profound influence on their structural and physical *** this study,we employed Brownian dynamics simulations to explore the non-equilibrium dynamics in colloidal systems,focusing particularly on the role of tangential friction and its influence on the macroscopic physical properties of *** found that the disruption of instantaneous time-reversal symmetry by tangential frictional interactions can trigger the self-assembly of colloidal systems into intricate network configurations,and these novel structures exhibit unique depletion force and rheological properties that set them apart from traditional colloidal gel *** findings not only help deepen our comprehension of the self-assembly phenomena in non-equilibrium colloidal systems but also offer fresh insights for the development of colloidal materials with tailored characteristics.

关键词： colloids networks self-assembly Brownian dynamics

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Catalytic Hydrogenation of Methanol-Containing Effluent from Epoxidation of Propylene

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China Petroleum Processing & Petrochemical Technology 2015年第3期17卷 94-101页

作者： cheng ke SINOPEC Luoyang Petrochemical Complex

This paper describes the hydrogenation of impurities in the methanol-containing effluent from the propylene epoxidation process with hydrogen peroxide. The effects of reaction temperature, pressure, weight hourly space velocity(WHSV) and H2/methanol ratio on the concentration of various impurities in methanol solvent were investigated. It was found out that the aldehyde, hydrogen peroxide and nitro compounds in the methanol solvent could be completely hydrogenated over the Ni catalyst under proper reaction conditions. 90% of acetone and up to 50% of acetals(ketals) existing in the methanol solvent could be hydrogenated. No significant change was observed for the rest of the impurities that were present in the methanol solvent(i. e., 1-methoxy-2-propanol, 2-methoxy-1-propanol and 1,2-propanediol). The H2O2 decomposition reaction was enhanced using Ni catalyst, through the formation of NioOH, but no oxygen was found in the off-gas of hydrogenation reaction since NioH could react on NioOH formed via dissociative adsorption of hydrogen peroxide, or on NioO formed via adsorption of oxygen.

关键词： propylene epoxidation methanol hydrogenation

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Construction and Analysis of Common Foreign Trade Cycle Based on MS-VAR:An Empirical Study of Global Experience

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Journal of Systems Science & Complexity 2015年第2期28卷 360-380页

作者： ZHANG Lili ZHANG Xun cheng ke Academy of Mathematics and Systems Science Chinese Academy of Sciences

This paper proves the co-movement of foreign trade in different countries or areas which belong to ten economic regions by MS-VAR *** studies show that trade crisis lags behind economic crisis and spreads from the core of the economic crisis to its periphery which is closely-related with *** trade crisis corresponding to the US subprime crisis spreads faster than before,which has struck worldwide foreign *** order to get the main factors affecting trade crisis,the authors construct composite indices which are proxies of economic growth and price levels of internal and external *** results of logistic and linear panel models show that economic growth affects more to trade cycle than price *** results of panel models with dummy variable of trade crisis show that the outside economic growth do bad to the recovery of internal foreign trade during trade crisis corresponding to Mexican peso crisis,the Asian financial crisis and the Russian debt crisis,while the opposite is true during the internet bubble burst and the US subprime crisis.

关键词： Business cycle foreign trade crisis foreign trade cycle MS-VAR model panel model.

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蚁群算法实现光通过散射介质聚焦

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成都信息工程大学学报 2025年第1期40卷 111-117页

作者：方龙杰程科何修军成都信息工程大学光电工程学院四川成都610225

光通过散射介质聚焦是光通信和生物成像领域的重要目标。由于散射介质材料的密度分布具有高度非均匀性,相干光在非均匀介质中传输会经历多次散射。寻找与散射介质相匹配的入射光波前分布是解决这一问题的核心和关键。采用蚁群算法来优... 详细信息

光通过散射介质聚焦是光通信和生物成像领域的重要目标。由于散射介质材料的密度分布具有高度非均匀性,相干光在非均匀介质中传输会经历多次散射。寻找与散射介质相匹配的入射光波前分布是解决这一问题的核心和关键。采用蚁群算法来优化入射光波前的相位分布。利用探测器测量介质后的焦点光强,发现蚁群算法获得的增强因子比传统的遗传算法高。数值仿真和实验验证了蚁群算法的可行性和稳定性。因此,今后在相干光通过散射介质聚焦与成像领域,应当优先考虑利用蚁群算法优化入射光的波前相位分布。

关键词：蚁群算法散射聚焦相位调制

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Time-domain solution for transient dynamic response of a large-diameter thin-walled pipe pile

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Earthquake Engineering and Engineering Vibration 2015年第2期14卷 239-251页

作者： Ding Xuanming Liu Hanlong Chu Jian cheng ke key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University) Ministry of Education Department of Civil Construction & Environmental Engineering Iowa State University 328 Town Engineering Building School of Mechanical and Power Engineering Nanjing University of Technology

The propagation of stress waves in a large-diameter pipe pile for low strain dynamic testing cannot be explained properly by traditional 1D wave theories. A new computational model is established to obtain a wave equation that can describe the dynamic response of a large-diameter thin-walled pipe pile to a transient point load during a low strain integrity test. An analytical solution in the time domain is deduced using the separation of variables and variation of constant methods. The validity of this new solution is verifi ed by an existing analytical solution under free boundary conditions. The results of this time domain solution are also compared with the results of a frequency domain solution and fi eld test data. The comparisons indicate that the new solution agrees well with the results of previous solutions. Parametric studies using the new solution with reference to a case study are also carried out. The results show that the mode number affects the accuracy of the dynamic response. A mode number greater than 10 is required to enable the calculated dynamic responses to be independent of the mode number. The dynamic response is also greatly affected by soil properties. The larger the side resistance, the smaller the displacement response and the smaller the refl ected velocity wave crest. The displacement increases as the stress waves propagate along the pile when the pile shaft is free. The incident waves of displacement and velocity responses of the pile are not the same among different points in the circumferential direction on the pile top. However, the arrival time and peak value of the pile tip refl ected waves are almost the same among different points on the pile top.

关键词： pipe pile transient load analytical solution time

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侧填土对分离式基础涵洞地基承载力影响分析

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公路 2025年第2期70卷 86-91页

作者：彭小明万克成夏禹涛胡琼湖南省交通规划勘察设计院有限公司

为研究涵洞侧面填土对分离式基础涵洞地基承载力的影响，考虑填土-涵洞-地基共同作用，建立一般和较好地基条件下，不同填土高度的分离式基础涵洞有限元模型，进行地基承载力和稳定性计算，并对涵顶和基底压力、周边土体沉降变形的分布... 详细信息

为研究涵洞侧面填土对分离式基础涵洞地基承载力的影响，考虑填土-涵洞-地基共同作用，建立一般和较好地基条件下，不同填土高度的分离式基础涵洞有限元模型，进行地基承载力和稳定性计算，并对涵顶和基底压力、周边土体沉降变形的分布规律和特征进行研究。结果表明：涵顶与涵侧土体的差异沉降是造成涵台跳车、路面开裂、涵顶土压力集中的主要原因，在沉降变形满足要求的前提下，应当使涵洞地基与路基的刚度尽量保持一致；在路基填土荷载和涵洞结构自重作用下，涵洞地基处于线弹性稳定状态，地基承载力安全储备较大；分离式基础涵洞地基的破坏属于渐进的塑性破坏，可按工后沉降20 cm为控制指标确定地基容许承载力；涵洞侧面填土对地基承载力的提高有利，可采用《公路桥涵地基与基础设计规范》(JTG 3363-2019)4.3.4条公式计算侧面填土作用下分离式基础涵洞的地基承载力。

关键词：涵洞分离式基础地基承载力稳定性

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碳点在化学发光中的应用研究进展

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分析化学 2025年第1期53卷 27-37页

作者：肖钰杰谭玄赵悦程轲张雪杨宪郑红重庆师范大学生命科学学院活性物质生物技术教育部工程研究中心重庆医药高等专科学校药学院重庆师范大学化学学院

化学发光是一种无需光、热、声、电和磁激发的自发光现象。与其它分析技术相比，化学发光法具有灵敏度高、线性范围宽、设备简单和检测速度快等优点，已在分析检测、冷光源和生物成像等领域得到了广泛应用。碳点（CDs）是一类具有优异... 详细信息

化学发光是一种无需光、热、声、电和磁激发的自发光现象。与其它分析技术相比，化学发光法具有灵敏度高、线性范围宽、设备简单和检测速度快等优点，已在分析检测、冷光源和生物成像等领域得到了广泛应用。碳点（CDs）是一类具有优异光致发光性能和良好生物相容性的纳米材料，其性质稳定、制备简便且种类丰富，目前，研究人员已经将多种类型的CDs应用于不同的化学发光体系中。本文简要介绍了CDs在常见化学发光体系中的应用以及可能的作用机制，总结了近年来基于CDs的化学发光方法在不同分析检测领域中的应用研究进展，并对其应用前景进行了展望。

关键词：碳点化学发光发光机理分析检测评述

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Cell and biomaterial-based approaches to uterus regeneration

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Regenerative Biomaterials 2019年第3期6卷 141-148页

作者： Feiran Liu Shiqi Hu ShaoweiWang ke cheng Department of Gynecology and Obstetrics Beijing HospitalNational Center of GerontologyBeijing 100730China Department of Molecular Biomedical Sciences and Comparative Medicine Institute North Carolina State UniversityRaleighNC 27607USA Joint Department of Biomedical Engineering University of North Carolina at Chapel Hill and North Carolina State UniversityRaleighNC 27695USA Division of Pharmacoengineering and Molecular Pharmaceutics Eshelman School of PharmacyUniversity of North Carolina at Chapel HillChapel HillNC 27599USA

Asherman’s syndrome(AS)is an endometrial disorder in which intrauterine adhesions crowd the uterine cavity and *** fibrotic adhesions are primarily the result of invasive uterine procedures that usually involve the insertion of surgical equipment into the *** syndrome is accompanied by a number of clinical manifestations,including irregular or painful menstruation and *** most prevalent treatment is hysteroscopy,which involves the physical removal of the fibrous *** the last decade,however,the field has been exploring the use of cellbased therapeutics,in conjunction with biomaterials,to treat *** review is a recapitulation of the literature focused on cellular therapies for treating AS.

关键词： Asherman’s syndrome intrauterine adhesions endometrium stem cells

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Chinese expert consensus and practice guideline of totally implantable access port for digestive tract carcinomas

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World Journal of Gastroenterology 2020年第25期26卷 3517-3527页

作者： ke-cheng Zhang Lin Chen 无 Department of General Surgery&Institute of General Surgery The First Medical CentreChinese People’s Liberation Army General HospitalBeijing 100853China Chinese Research Hospital Association Digestive Tumor Committee Chinese Association of Upper Gastrointestinal Surgeons Chinese Gastric Cancer Association and Gastrointestinal Surgical Group of Chinese Surgical Society Affiliated to the Chinese Medical Association

Totally implantable access port is a fully implantable drug delivery system that is implanted subcutaneously and can be retained for a long *** of ports include a simple nursing process,low risk of infection and embolism,and high patient *** order to promote the standardized application of ports in the treatment of digestive tract tumors and reduce port-related complications,the Chinese Research Hospital Association Digestive Tumor Committee,the Chinese Association of Upper Gastrointestinal Surgeons,the Chinese Gastric Cancer Association,and the Gastrointestinal Surgical Group of Chinese Surgical Society Affiliated to Chinese Medical Association have organized multidisciplinary expert discussions at the General Hospital of the People’s Liberation Army and nationwide expert letter reviews and on-site seminars,and formulated an expert consensus of the operation guidelines.

关键词： Totally implantable access port Digestive tract tumor Consensus and guideline Venous port Peritoneal port Arterial port

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