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One-dimensional large-strain consolidation of soft clay with non-Darcian flow and nonlinear compression and permeability of soil

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Journal of Central South University 2017年第4期24卷 967-976页

作者： LI Chuan-xun WANG Chang-jian LU Meng-meng LU Jian-fei xie Kang-he Faculty of Civil Engineering and Mechanics Jiangsu University School of Mechanics and Civil Engineering China University of Mining and Technology Research Center of Coastal and Urban Geotechnical Engineering Zhejiang University

Geometrical nonlinearity of the soft soil and the deviation of water flow in the soft clay from Darcy's law have been well recognized in practice. However, the theory of consolidation, which can account for both the geometrical nonlinearity and the non-Darcian flow, has not been reported so far. In this contribution, a model for the consolidation of soft clay which can allow for these two factors simultaneously is proposed. Utilizing the finite difference method, the numerical model for this problem is developed. With the numerical model, the effects of the geometrical nonlinearity and the non-Darcian flow on the consolidation of the soft soil are investigated. The results show that when the self-weight stress is calculated by the same method, the rate of the non-Darcian consolidation for the large-strain case is larger than that for the small-strain case, but the difference between them is limited. However, the difference between the consolidation rates caused by the non-Darcian and Darcian flows is significant. Therefore, when the geometrical nonlinearity of the soft clay is considered in calculating the consolidation settlement, due to the complexity of the large-strain assumption, the small-strain assumption can be used to replace it if the self-weight stress for the small-strain assumption is calculated by considering its sedimentation. However, due to the aforementioned large difference between the consolidation rates with consideration of the non-Darcian flow in soft clay or not, it is better to consider the non-Darcian flow law for both the small and large stain assumptions.

关键词： large-strain consolidation non-Darcian flow nonlinear compression nonlinear permeability

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A slot microring sensor with feedback spiral waveguide for trace gas CH_4 sensing in mid-infrared region

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Optoelectronics Letters 2019年第1期15卷 1-5页

作者： xie Kai-he ZHANG Xin ZHANG Xiao-wei JIN Han JIAN Jia-wen Faculty of Electrical Engineering and Computer Science Ningbo University

In this paper, a slot microring resonator with a piece of spiral feedback waveguide for CH_4 sensing application is proposed. This sensor is based on silicon-on-insulator(SOI) substrate and with the operation wavelength in mid-infrared region. To reach high sensitivity and good selectivity, slot cross section and spiral feedback waveguide are carefully tailored. The sensor shows ppb-scale trace gas sensing potential and is easy to be packaged in integrated photonics circuits. Calculation results show that the sensitivity reaches 1.4×10^(-2) dB/ppm and the detection limit achieves 700 ppb in the case of L_(spiral)=100 L_r.

关键词： microring feedback wavelength

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Role of noncoding RNAs in liver fibrosis

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World Journal of Gastroenterology 2023年第9期29卷 1446-1459页

作者： Qing-Yuan Li Tao Gong Yi-Ke Huang Lan Kang Charlotte A Warner he xie Li-Min Chen Xiao-Qiong Duan Department of Clinical Medicine North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina Center for Transfusion-transmitted Infectious Diseases Institute of Blood TransfusionChinese Academy of Medical Sciences and Peking Union Medical CollegeChengdu 610052Sichuan ProvinceChina Liver Center and Gastrointestinal Division Department of MedicineMassachusetts General HospitalHarvard Medical SchoolBostonMA 02114United States Department of Clinical Laboratory The Hospital of Xidian GroupXi’an 710077Shaanxi ProvinceChina

Liver fibrosis is a wound-healing response following chronic liver injury caused by hepatitis virus infection,obesity,or excessive *** is a dynamic and reversible process characterized by the activation of hepatic stellate cells and excess accumulation of extracellular *** fibrosis could lead to cirrhosis and even liver cancer,which has become a significant health burden *** studies have revealed that noncoding RNAs(ncRNAs),including microRNAs,long noncoding RNAs and circular RNAs,are involved in the pathogenesis and development of liver fibrosis by regulating signaling pathways including transforming growth factor-βpathway,phosphatidylinositol 3-kinase/protein kinase B pathway,and Wnt/β-catenin *** in serum or exosomes have been reported to tentatively applied in the diagnosis and staging of liver fibrosis and combined with elastography to improve the accuracy of *** mimics,ncRNAs in mesenchymal stem cell-derived exosomes,and lipid nanoparticles-encapsulated ncRNAs have become promising therapeutic approaches for the treatment of liver *** this review,we update the latest knowledge on ncRNAs in the pathogenesis and progression of liver fibrosis,and discuss the potentials and challenges to use these ncRNAs for diagnosis,staging and treatment of liver *** these will help us to develop a comprehensive understanding of the role of ncRNAs in liver fibrosis.

关键词： MicroRNAs Long noncoding RNAs Circular RNAs Liver fibrosis Diagnosis Treatment

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Selection of Parents for Breeding Edible Varieties of Sweetpotato with High Carotene Content

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Agricultural Sciences in China 2009年第10期8卷 1166-1173页

作者： MA Dai-fu LI Qiang LI Xiu-ying LI Hong-min TANG Zhong-hou HU Ling CAO Qing-he xie Yi-ping WANGXin Sweetpotato Research institute Chinese Academy of Agricultural Sciences~National Sweetpotato Improvement Center Xuzhou 221121P.R. China

Sweetpotato varieties with high carotene content have high value for human health. This work aims to improve the breeding efficiency of special varieties with high carotene content by combining molecular markers and agronomic traits to evaluate and screen the parents. The cluster analysis was carried out to identify and screen promising parents by utilizing phenotypic results of the agronomic and characteristic traits, and RAPD and ISSR markers of 15 parents and their offspring by group crossing. Among different parental materials, greater variations were observed in two important traits, the carotene content and the storage root yield. Negative correlation was found between the carotene content and both fresh and dried root yields. The most significant positive correlation was between the carotene content of parents and that of their offspring, with the coefficient of correlation value of 0.7932＊＊. The relationship based on the agronomic characters of the trial materials was not in agreement with the known genealogy, while that based on the molecular marker data showed better result. Each primer amplified 13.8 bands oflSSR markers on average, in which the rate of polymorphic loci was 89.6%. 9.4 bands of RAPD markers were arnplified per primer, in which the rate of polymorphic bands was 74.46%. Large genetic variation of carotene content was found among the parents. For analyzing the genetic diversity of sweetpotato, the molecular marker methods were better than morphological traits; ISSR markers were more efficient than RAPD markers. The combination of molecular markers and agronomic trait analysis may provide valuable theoretic basis for selection of parents to breed new varieties with high carotene content.

关键词： sweetpotato carotene selection of parents RAPD ISSR cluster analysis

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铁路货物运输的随机过程分析和及时送达概率估计

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铁道学报 2006年第1期28卷 19-21页

作者：谢建光谢如鹤中南大学交通运输工程学院湖南长沙410075

应用随机过程理论,分析铁路运输系统中货物及时送达的概率分布,得到货物运输延续时间的平均值,为实现用户要求的运到期限提供了合理保证,并可通过评估与货主商定的运到期限与实际货物送达时间误差的概率,来找到货物及时送达过程中的关... 详细信息

应用随机过程理论,分析铁路运输系统中货物及时送达的概率分布,得到货物运输延续时间的平均值,为实现用户要求的运到期限提供了合理保证,并可通过评估与货主商定的运到期限与实际货物送达时间误差的概率,来找到货物及时送达过程中的关键环节,改进货物送达流程。最后举例说明它的应用。

关键词：随机过程论铁路运输系统货物及时送达货物运输延续时间货物运到期限

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Genome-wide identification and expression analysis of NtbHLH gene family in tobacco(Nicotiana tabacum)and the role of NtbHLH86 in drought adaptation

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Plant Diversity 2021年第6期43卷 510-522页

作者： Ge Bai Da-Hai Yang Peijian Chao heng Yao MingLiang Fei Yihan Zhang Xuejun Chen Bingguang Xiao Feng Li Zhen-Yu Wang Jun Yang he xie Tobacco Breeding and Biotechnology Research Center Yunnan Academy of Tobacco Agricultural SciencesKunmingYunnanChina Key Laboratory of Tobacco Biotechnological Breeding KunmingYunnanChina National Tobacco Genetic Engineering Research Center KunmingYunnanChina National Tobacco Gene Research Centre Zhengzhou Tobacco Research InstituteZhengzhouHenanChina Institute ofBioengineering Guangdong Academy of SciencesGuangzhouGuangdong510316China

The bHLH transcription factors play pivotal roles in plant growth and development,production of secondary metabolites and responses to various environmental *** the bHLH genes have been well studied in model plant species,a comprehensive investigation of the bHLH genes is required for tobacco with newly obtained high-quality *** the present study,a total of 309 NtbHLH genes were identified and can be divided into 23 *** conserved amino acids which are essential for their function were predicted for the NtbHLH ***,the NtbHLH genes were conserved during evolution through analyzing the gene structures and conserved motifs.A total of 265 NtbHLH genes were localized in the 24 tobacco chromosomes while the remained 44 NtbHLH genes were mapped to the scaffolds due to the complexity of tobacco ***,transcripts of NtbHLH genes were obviously tissue-specific expressed from the gene-chip data from 23 tobacco tissues,and expressions of 20 random selected NtbHLH genes were further confirmed by quantitative real-time PCR,indicating their potential functions in the plant growth and ***,overexpressed NtbHLH86 gene confers improve drought tolerance in tobacco indicating that it might be involved in the regulation of drought ***,our findings here provide a valuable information on the characterization of NtbHLH genes and further investigation of their functions in tobacco.

关键词： bHLH gene family Development Genome-wide analysis Characterization

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卧螺离心机选型因素研究

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给水排水 2010年第10期36卷 94-99页

作者：何谐深圳市水务(集团)有限公司深圳518031

简要介绍了卧螺离心机的性能概念、结构,并将卧螺离心机选型因素归纳为与脱水效果、处理能力、运营维护有关的三类,并对这些因素进行详细的综合分析,旨在对卧螺离心机的选型系统研究提供帮助。

关键词：卧螺离心机选型脱水效果处理能力运营维护

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应用型高校产教融合制度化发展研究

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国家教育行政学院学报 2020年第11期 50-57,87页

作者：何谐福建工程学院高等教育发展研究中心福建福州350118

应用型高校产教融合制度化不仅是高等教育高质量发展的必由之路,也是紧跟国家发展战略于供给侧逐步深化学校制度改革的有力举措。应用型高校产教融合制度逻辑选择经历了"统治权威下的强制逻辑、专业权威下的模仿逻辑、共享价值观念权威... 详细信息

应用型高校产教融合制度化不仅是高等教育高质量发展的必由之路,也是紧跟国家发展战略于供给侧逐步深化学校制度改革的有力举措。应用型高校产教融合制度逻辑选择经历了"统治权威下的强制逻辑、专业权威下的模仿逻辑、共享价值观念权威下的斗争逻辑"三种逻辑演变,然而这三种制度逻辑与产教融合本质属性存在内在矛盾,以致阻碍了应用型高校产教融合的制度化发展。研究认为应用型高校产教融合制度化应以技术知识生产实践为支点,以协同为逻辑起点,发挥政府在产教融合制度建设中的主导作用,明确企业主体在产教融合运行中的权责限度,凸显应用型高校在产教融合运行中的特色服务功能。

关键词：应用型高校产教融合制度化制度逻辑

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Anisotropy in shear-sliding fracture behavior of layered shale under different normal stress conditions

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Journal of Central South University 2022年第11期29卷 3678-3694页

作者： FAN Zi-dong xie he-ping REN Li ZHANG Ru he Rui LI Cun-bao ZHANG Ze-tian WANG Jun xie Jing Key Laboratory of Deep Earth Science and Engineering of Ministry of Education(Sichuan University) Chengdu 610065China College of Architecture and Environment Sichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Shenzhen UniversityShenzhen 518060China

Shear-sliding mode(mode Ⅱ)fracture of rocks is a vital failure form in deep underground *** gain deep insight into the anisotropic shear fracture behaviors of a typical shale under high normal stress conditions,a series of direct shear tests were conducted on double-notched specimens in three typical bedding orientations(i.e.,the arrester,divider,short-transverse orientations)and under five normal *** modeⅡfracture toughness(K_(Ⅱc))is found to exhibit a significant 3D *** maximum K_(Ⅱc)is obtained in the divider orientation,followed by those in the arrester and short-transverse *** contrast,the 3D anisotropy in the critical modeⅡenergy release rate(G_(Ⅱc))is not as significant as that in K_(Ⅱc),and G_(Ⅱc)in the arrester orientation is quite close to that in the divider *** anisotropy in the prepeak input energy accumulated during shearing is found to be exactly consistent with that in G_(Ⅱc),which has not been noted ***,the anisotropies in the modeⅡfracture resistances will,unexpectedly,not be weakened by the high normal *** to the layered structures,tensile cracks are involved during the modeⅡfracture process,resulting in the formation of rough fracture surfaces.

关键词： shale modeⅡfracture fracture toughness critical energy release rate surface morphology

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新见女性册命金文[女受]鼎及相关史实考论

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史学集刊 2022年第2期 77-90页

作者：谢乃和东北师范大学历史文化学院吉林长春130024

新近刊布的[女受]鼎是一篇稀见的女性册命金文,其内容主要记载了西周时期两名女性贵族之间的一次改命,属于罕见的周代贵族女性职务性册命金文。与一般册命铭文书写不同的是,[女受]鼎中不见册命地点、史官、右者等册命礼仪的记载,更在篇... 详细信息

新近刊布的[女受]鼎是一篇稀见的女性册命金文,其内容主要记载了西周时期两名女性贵族之间的一次改命,属于罕见的周代贵族女性职务性册命金文。与一般册命铭文书写不同的是,[女受]鼎中不见册命地点、史官、右者等册命礼仪的记载,更在篇首多出"退事于内宫"的特殊句式。[女受]鼎相关铭文特点不仅是早期册命金文的时代共性,也是女性贵族受命特殊性的反映。而"退事于内宫"句来源于铭辞中贵族女性"妫"对"[女受]"的褒奖之辞,妫称赞[女受]"唯汝聿型",即[女受]较好地效法了其先人的德行,[女受]因此在铭文篇首特意强调其在内宫之旧职。不唯如此,[女受]鼎的铭文书写还为周代贵族女性职务性册命提供了佐证,是一篇弥足珍贵的西周册命金文,具有重要的史料价值。

关键词：西周金文女性册命职务性册命

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