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NUMERICAL SIMULATION OF ARTIFICIAL VENTILATED CAVITY

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Journal of Hydrodynamics 2006年第3期18卷 273-279页

作者： jia li-ping WANG cong WEI Ying-jie WANG Hai-bin ZHANG jia-zhong YU Kai-ping School of Astronautics Harbin Instituteof Technology Harbin 150001 China

In order to determine artificial ventilated cavity shape and provide design reference for engineering applications, the shape of ventilated cavity and the drag of underwater body have been numerically simulated with commercial code in this work. Empirical formulas between ventilated cavity shape and cavitation number are obtained under the conditions of zero incidence and similarity shapes of ventilated cavity and vapor cavity have been validated under the same cavitation number. In addition, the relations between change of cavitator incidence and cavity unsymmetry and the relations of between drag and cavity shape have been primarily analysed. Furthermore, the numerical results fit well with the experimental results.

关键词： ventilated cavity numerical simulation,cavity shape

Analysis of drought tolerance and genetic and epigenetic variations in a somatic hybrid between Ipomoea batatas (L.) Lam. and I. triloba L.

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Journal of Integrative Agriculture 2017年第1期16卷 36-46页

作者： jia li-cong ZHAI Hong HE Shao-zhen YANG Yu-feng liU Qing-chang Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization Ministry of Education/China Agricultural University Beijing 100193 P.R. China

The somatic hybrid KT1 was previously obtained from protoplast fusion between sweetpotato （Ipomoea batatas （L.） Lam.） cv. Kokei No. 14 and its wild relative I. triloba L. However, its genetic and epigenetic variations have not been investigated. This study showed that KT1 exhibited significantly higher drought tolerance compared to the cultivated parent Kokei No. 14. The content of proline and activities of superoxide dismutase （SOD） and photosynthesis were significantly increased, while malonaldehyde （MDA） content was significantly decreased compared to Kokei No. 14 under drought stress. KT1 also showed higher expression level of well-known drought stress-responsive genes compared to Kokei No. 14 under drought stress. Amplified fragment length polymorphism （AFLP） and methylation-sensitive amplified polymorphism （MSAP） analyses indicated that KT1 had AFLP and MSAP band patterns consisting of both parent specific bands and changed bands. Fur- ther analysis demonstrated that in KT1. the proportions of Kokei No. 14 specific genome components and methylation sites were much greater than those of I. triloba. KT1 had the same chloroplast and mitochondrial genomes as Kokei No. 14. These results will aid in developing the useful genes ofI. triloba and understanding the evolution and phylogeny of the cultivated sweetpotato.

关键词： drought tolerance epigenetic variation genetic variation Ipomoea batatas (L.) Lain. I. triloba L. somatic hybrid

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能源价格与能源强度的耦合与内聚研究

软科学 2015年第5期29卷 125-129页

作者：唐建荣贾梨淙江南大学商学院江苏无锡214122

借助能源价格调节效应模型,系统分析了能源价格通过能源消费结构、产业结构、技术进步等要素与能源强度产生的耦合关系;据此推广余情,利用通径分析研究了煤炭、汽油、柴油、电力价格的内聚程度和合理的能源价格结构。研究表明:能源价格... 详细信息

借助能源价格调节效应模型,系统分析了能源价格通过能源消费结构、产业结构、技术进步等要素与能源强度产生的耦合关系;据此推广余情,利用通径分析研究了煤炭、汽油、柴油、电力价格的内聚程度和合理的能源价格结构。研究表明:能源价格通过技术效率、产业结构与能源强度形成耦合;能源价格影响能源强度的消费结构路径存在阻滞,其调节效用被完全覆盖;提高能源价格有助于强化技术进步对降低能源强度的作用、减弱产业结构重工业化对能源强度的正向拉动;能源价格通过产业结构路径产生的调节效用达到总效用的74.84%。进一步分析表明:能源价格结构的整体优化至关重要;煤炭价格的适度降低,汽油价格的均衡调节,柴油价格的小幅上涨,电力价格的市场回归最有利于发挥能源价格对降低能源强度的作用。

关键词：能源价格通径分析调节效应能源强度内聚耦合

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng cong Jing-Jing Hu Yan Yu Xiao-li li Xiao-Ting Sun li-Ting Wang Xia Wu ling-Jie Zhu Xiao-jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

Enhanced post-combustion CO2 capture and direct air capture by plasma surface functionalization of graphene adsorbent

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Journal of Energy Chemistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu Wang Xiao Ding Huang Yunyi Yiyu liu jia li Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Research Institute The Hong Kong University of Science and Technology (Guangzhou) Carbon Neutrality and Climate Change Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University

Graphene has enormous potential to capture CO2due to its unique properties and ***,graphene-based adsorbents have drawbacks of lower CO2adsorption capacity and poor *** work demonstrates a one-step rapid and sustainable N2/H2plasma treatment process to prepare graphene-based sorbent material with enhanced CO2adsorption *** treatment directly enriches amine species,increases surface area,and improves textural *** CO2adsorption capacity increases from 1.6 to 3.3 mmol/g for capturing flue gas,and from 0.14 to 1.3 mmol/g for direct air capture （DAC）.Importantly,the electrothermal property of the plasma-modified aerogels has been significantly improved,resulting in faster heating rates and significantly reducing energy consumption compared to conventional external heating for regeneration of *** aerogels display improved selectivity of 42 and 87 after plasma modification for 5 and 10 min,*** plasma-treated aerogels display minimal loss between 17%and 19% in capacity after 40 adsorption/desorption cycles,rendering excellent *** N2/H2plasma treatment of adsorbent materials would lower energy expenses and prevent negative effects on the global economy caused by climate change.

关键词： Carbon neutrality CO 2 capture Climate change Plasma treatment Graphene aerogel

早期护理干预对无偿献血者献血反应的影响分析

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中国卫生产业 2016年第1期13卷 83-84页

作者：李家丛云南省保山市中心血站云南保山678000

目的分析早期护理干预对无偿献血者献血反应的影响。方法选取400例无偿献血者作为研究对象,将其分为对照组(n=200)及观察组(n=200),对照组接受常规宣教,观察组接受早期护理干预,比较两组单次献血量、献血反应发生率。结果观察组单次献... 详细信息

目的分析早期护理干预对无偿献血者献血反应的影响。方法选取400例无偿献血者作为研究对象,将其分为对照组(n=200)及观察组(n=200),对照组接受常规宣教,观察组接受早期护理干预,比较两组单次献血量、献血反应发生率。结果观察组单次献血量显著高于对照组(P<0.05);观察组献血反应发生率为1.00%,显著低于对照组4.50%(P<0.05)。结论对无偿献血者实施早期护理干预,可有效减低献血反应发生率,提高单次献血量。

关键词：早期护理干预无偿献血献血反应

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苏北陆区潮成沙体的磁组构特征及沉积环境

沉积学报 1999年第4期17卷 601-607页

作者：范代读张家强李从先同济大学海洋地质教育部开放研究实验室上海200092

苏北陆区潮成沙体磁组构分析表明,与苏北海域辐射沙洲一样,砂体也形成于辐聚辐散的潮流场。沉积物在辐聚辐散的潮流场中经潮流、波浪作用,K、P值普遍较大,在垂向和横向上变化显著,可能是沉积动力增强的反映。P、F值相关性较好,而P、L值... 详细信息

苏北陆区潮成沙体磁组构分析表明,与苏北海域辐射沙洲一样,砂体也形成于辐聚辐散的潮流场。沉积物在辐聚辐散的潮流场中经潮流、波浪作用,K、P值普遍较大,在垂向和横向上变化显著,可能是沉积动力增强的反映。P、F值相关性较好,而P、L值之间的相关性差,反映沉积环境较稳定。q值小,以正常沉积为主,出现q>07的风暴事件沉积。

关键词：磁组构潮成沙体冰后期沉积环境风暴沉积

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小型农田水利工程治理影响因素研究

海河水利 2024年第4期 66-69页

作者：李佳聪大连市水利建筑设计院有限公司辽宁大连116100

为了提高小型农田水利工程治理效率,首先,采用调查问卷对大连市小型农田水利工程治理影响因素进行初步识别;其次,运用Logistic回归模型进行实证研究,分析不同因素对治理的影响程度;最后,根据实证结果,提出小型农田水利工程治理优化对策... 详细信息

为了提高小型农田水利工程治理效率,首先,采用调查问卷对大连市小型农田水利工程治理影响因素进行初步识别;其次,运用Logistic回归模型进行实证研究,分析不同因素对治理的影响程度;最后,根据实证结果,提出小型农田水利工程治理优化对策。研究结果表明,户主特征、社会环境特征及工程自身特征对小型农田水利工程治理均能产生一定影响。本研究成果对提高小型农田水利工程治理效率具有一定指导意义。

关键词：小型农田水利工程工程治理影响因素分析

工作、情感与关系:新生代女性农民工的组织嵌入与公民行为

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东北师大学报（哲学社会科学版） 2018年第3期 79-84页

作者：张凤荣李佳聪钱偏偏东北师范大学马克思主义学部社会学院吉林长春130024

组织嵌入能够帮助企业更好地留住员工,提高员工的组织公民行为。本文以抽样调查数据为依据,从工作、情感和关系网络三个方面,探讨新生代女性农民工组织嵌入与公民行为的关系。实证分析结果显示:新生代女性农民工的组织嵌入和组织公民行... 详细信息

组织嵌入能够帮助企业更好地留住员工,提高员工的组织公民行为。本文以抽样调查数据为依据,从工作、情感和关系网络三个方面,探讨新生代女性农民工组织嵌入与公民行为的关系。实证分析结果显示:新生代女性农民工的组织嵌入和组织公民行为水平在年龄、学历和工作年限方面存在显著性差异;新生代女性农民工的组织嵌入及其包括的工作嵌入、情感嵌入和关系嵌入三个维度与组织公民行为各维度之间具有典型相关关系。

关键词：新生代女性农民工组织嵌入组织公民行为