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Heterogeneity Analysis of Cucumber Canopy in the Solar Greenhouse

Journal of Integrative Agriculture 2014年第12期13卷 2645-2655页

作者： qian ting-ting LU Sheng-lian ZHAO Chun-jiang GUO Xin-yu WEN Wei-liang DU jian-jun Shanghai Jiao Tong University Beijing Research Center for Information Technology in Agriculture

Detailed analysis of canopy structural heterogeneity is an essential step in conducting parameters for a canopy structural model. This paper aims to analyze the structural heterogeneity of a cucumber （Cucumis sativus L.） canopy by means of analyzing leaf distribution in a greenhouse environment with natural sunlight and also to assess the effect of structural canopy heterogeneity on light interception and photosynthesis. Two experiments and four measurements were carried out in autumn 2011 and spring 2012. A static virtual three-dimensional （3D） canopy structure was reconstructed using a 3D digitizing method. The diurnal variation of photosynthesis rate was measured using CIRAS-2 photosynthesis system. The results showed that, leaf azimuth as tested with the Rayleigh-test was homogeneous at vine tip over stage but turned heterogeneous at fruit harvest stage. After eliminating the inlfuence of the environment on the azimuth using the von Mises-Fisher method, the angle between two successive leaves was 144°;at the same time, a rule for the azimuth distribution in the canopy was established, stating that the azimuth distribution in cucumber followed a law which was positive spin and anti-spin. Leaf elevation angle of south-oriented leaves was on average 13.8° higher than that of north-oriented leaves. The horizontal distribution of light interception and photosynthesis differed signiifcantly between differently oriented leaves. East-and west-oriented leaves exhibited the highest photosynthetic rate. In conclusion, detailed analysis of canopy structural heterogeneity in this study indicated that leaf azimuth and elevation angle were heterogeneous in cucumber canopy and they should be explicitly described as they have a great impact both on light distribution and photosynthesis.

关键词： heterogeneity inclination leaf azimuth light interception photosynthesis

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Effect of Iodine Supplementation on Iodine Nutrition and Thyroid Function in Pregnant Women:A Cross-Sectional Study

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Biomedical and Environmental Sciences 2022年第7期35卷 641-647页

作者： SUN Rong qian ting ting LIU Lan Chun ZHAO Meng CHE Wen Jing ZHANG Ling LI Wei Dong JIA Qing Zhen WANG Jian Hui LI Jin Shu CHEN Zhi Hui ZHANG Bi Yun LIU Peng Center for Endemic Disease Control Chinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Key lab of Etiology and Epidemiology Education Bureau of Heilongjiang Province&Ministry of HealthMicroelement and human health lab of Heilongjiang ProvinceCenter for Endemic Disease ControlChinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Center for Disease Control and Prevention in Xinjiang Uygur Autonomous Region Urumqi 830002XinjiangChina Center for Disease Control and Prevention in Anhui Province Hefei 238007AnhuiChina Institute for Endemic Disease Control and Prevention in Shanxi Province Linfen 041000ShanxiChina Center for Disease Control and Prevention in Liaoning Province Shenyang 110005LiaoningChina Center for Disease Control and Prevention in Sichuan Province Chengdu 610041SichuanChina Center for Disease Control and Prevention in Fujian Province Fuzhou 350001FujianChina Center for Disease Control and Prevention in Hubei Province Wuhan 430079HubeiChina

This study aimed to describe the situation of iodine supplementation in pregnant women,and to explore the effects of such supplementation measures on iodine nutrition and thyroid *** women in seven provinces were selected by multi-stage *** information was collected and a food frequency questionnaire was *** iodine,urinary iodine,and thyroid function were *** were divided into five groups based on iodine *** pregnant women,the median urinary iodine concentration(MUIC)in seven provinces was 164.3μg/L,and thyroid nodules(15.75%)were a common thyroid ***,iodine supplementation,*** iodine nutrition and thyroid *** with other groups,simultaneous iodine supplementation with iodized salt,iodine-rich foods,and iodine preparations(the ISFP group)was the most effective approach for improving iodine nutrition;supplementation via iodine-rich foods only showed the lowest prevalence of TPOAb-positive(5.48%)and TgAb-positive(1.37%)*** addition,pregnant women with MUIC in the 150–249μg/L range showed higher rates of TPOAb-positive(13.78%)disease and sub-hypothyroidism(5.38%)compared to those with MUIC in the 100–149μg/L range;however,goiter showed the opposite *** results indicate that iodine supplementation needs vary from person to person.

关键词： function. iodine opposite

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Relationship between Dining Place, Iodine Source, and Iodine Nutrition in School-Age Children: A Cross-Sectional Study in China

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Biomedical and Environmental Sciences 2023年第1期36卷 10-23页

作者： qian ting ting SUN Rong LIU Lan Chun CHE Wen Jing ZHAO Meng ZHANG Ling LI Wei Dong JIA Qing Zhen WANG Jian Hui LI Jin Shu CHEN Zhi Hui ZHANG Bi Yun LIU Peng Endemic Disease Control Center Chinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Key lab of Etiology and Epidemiology Education Bureau of Heilongjiang Province&Ministry of HealthMicroelement and human health lab of Heilongjiang ProvinceCenter for Endemic Disease ControlChinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Center for Disease Control and Prevention in Xinjiang Uygur Autonomous Region Urumqi 830002XinjiangChina Center for Disease Control and Prevention in Anhui Province Hefei 230601AnhuiChina Institute of Endemic Disease Prevention and Control in Shanxi province Linfen 041000ShanxiChina Center for Disease Control and Prevention in Liaoning Province Shenyang 110000LiaoningChina Center for Disease Control and Prevention in Sichuan Province Chengdu 610041SichuanChina Center for disease control and prevention in Fujian province Fuzhou 350012FujianChina Center for Disease Control and Prevention in Hubei Province Wuhan 430079HubeiChina

Objective This study assesses the impact of iodine-rich processed foods and dining places on the iodine nutritional status of *** School-aged children(SAC) in seven provinces in China were selected by school-based multistage sampling. Urinary iodine, salt iodine, and thyroid volume(TVOL) were determined. Questionnaires were used to investigate dining places and iodine-rich processed foods. The water iodine was from the2017 national survey. Multi-factor regression analysis was used to find correlations between *** Children ate 78.7% of their meals at home, 15.1% at school canteens, and 6.1% at other *** percentage of daily iodine intake from water, iodized salt, iodine-rich processed foods, and cooked food were 1.0%, 79.2%, 1.5%, and 18.4%, respectively. The salt iodine was correlated with the urinary iodine and TVOL, respectively(r = 0.999 and-0.997, P ting out had less effect on children’s iodine nutrition *** Iodized salt remains the primary source of daily iodine intake of SAC, and processed food has less effect on iodine nutrition. Therefore, for children, iodized salt should be a compulsory supplement in their routine diet.

关键词： Dining place Source of iodine Iodine-rich processed foods Urinary iodine

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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

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Direct Photolithography of WO_(x)Nanoparticles for High‑Resolution Non‑Emissive Displays

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Nano-Micro Letters 2025年第3期17卷 297-309页

作者： Chang Gu Guojian Yang Wenxuan Wang Aiyan Shi Wenjuan Fang Lei qian Xiaofei Hu ting Zhang Chaoyu Xiang Yu‑Mo Zhang Laboratory of Optoelectronic Information Technology and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Hangzhou Bay Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315336People’s Republic of China Smart Materials for Architecture Research Lab Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China State Key Lab of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012People’s Republic of China

High-resolution non-emissive displays based on electrochromic tungsten oxides(WOx)are crucial for future near-eye virtual/augmented reality interactions,given their impressive attributes such as high environmental stability,ideal outdoor readability,and low energy ***,the limited intrinsic structure of inorganic materials has presented a significant challenge in achieving precise patterning/pixelation at the micron ***,we successfully developed the direct photolithography for WOx nanoparticles based on in situ photo-induced ligand *** strategy enabled us to achieve ultra-high resolution efficiently(line widthting device exhibited impressive electrochromic performance,such as fast response(3600 cycles),as well as promising applications in electronic logos,pixelated displays,flexible electronics,*** success and advancements presented here are expected to inspire and accelerate research and development(R&D)in high-resolution non-emissive displays and other ultra-fine micro-electronics.

关键词： Electrochromic Direct photolithography WOx nanoparticles In situ photo-induced ligand exchange High-resolution displays

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大功率LED散热回路热管的实验研究

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光电子．激光 2015年第10期26卷 1843-1848页

作者：鲁祥友钱婷婷王晏平林媛方武安徽建筑大学环境与能源工程学院安徽合肥230601 上海理工大学能源与动力工程学院上海200093

大功率LED热问题是制约大功率LED的稳定性、可靠性和寿命的技术瓶颈之一,有效的低热阻封装LED热设计是提高LED性能的关键。本文提出一种应用于大功率LED散热的铜-水回路热管（LHP）,研究了加热方式、充液率、风压和倾角等对LHP均温性、... 详细信息

大功率LED热问题是制约大功率LED的稳定性、可靠性和寿命的技术瓶颈之一,有效的低热阻封装LED热设计是提高LED性能的关键。本文提出一种应用于大功率LED散热的铜-水回路热管（LHP）,研究了加热方式、充液率、风压和倾角等对LHP均温性、起动性和热阻等的影响。研究结果表明：在输入功率为30 W时,LHP的启动时间约为6.5min;热阻范围为0.48~1.62K/W;在热负荷为30 W时,蒸发器的温度可以稳定控制在75℃以下;蒸发器表面均温差被控制在1.6℃以下;LHP的最佳的充液率为60%;冷凝器侧风压在一定范围内（小于130Pa）时,冷凝器侧风压力越大,LED产品的散热性能越好。

关键词：大功率LED 回路热管(LHP) 充液率结温

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北京市经济与水环境系统耦合关系及效果研究

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中国农村水利水电 2017年第2期 77-81,85页

作者：王婷王保乾曹婷婷河海大学商学院南京210000

通过协调度模型分析计算经济系统与水环境系统耦合程度,运用超越对数随机前沿生产函数(SFA)构造水资源利用效率的投入产出函数,并对城市水资源利用效率进行测算。以北京为例,测算经济系统与水环境系统的耦合状态和耦合效果。结果表明,19... 详细信息

通过协调度模型分析计算经济系统与水环境系统耦合程度,运用超越对数随机前沿生产函数(SFA)构造水资源利用效率的投入产出函数,并对城市水资源利用效率进行测算。以北京为例,测算经济系统与水环境系统的耦合状态和耦合效果。结果表明,1997-2014年共18 a,北京市经济系统与水环境系统的协调发展指数整体呈上升趋势,经历了从基本协调、良好协调、优质协调和完美协调4个阶段;经济系统与水环境系统的耦合度与水资源利用效率基本保持一致,整体呈上升趋势,且水资源利用效率随着系统间耦合度的提高而提高。

关键词：经济系统水环境系统耦合水资源利用效率

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中国煤炭城市经济竞争力提升研究

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世界地理研究 2009年第2期18卷 64-70页

作者：钱婷婷徐波钱树伟安徽师范大学国土资源与旅游学院安徽芜湖241003

本文在界定城市经济竞争力概念的基础上,通过构建煤炭城市经济竞争力评价指标体系,运用主成分分析方法对我国27个典型煤炭城市进行城市经济竞争力的评价研究,最终将这些典型煤炭城市的经济竞争力划为4类。分析发现,大多数典型煤炭城市... 详细信息

本文在界定城市经济竞争力概念的基础上,通过构建煤炭城市经济竞争力评价指标体系,运用主成分分析方法对我国27个典型煤炭城市进行城市经济竞争力的评价研究,最终将这些典型煤炭城市的经济竞争力划为4类。分析发现,大多数典型煤炭城市的经济竞争力综合评价值偏低,同时,煤炭城市之间的经济竞争力差异明显。在分析的基础上,根据当前煤炭城市经济发展的实际状况,提出了提升我国煤炭城市经济竞争力的相关对策。

关键词：煤炭城市经济竞争力主成分分析提升对策

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杨树ASE蛋白的生化功能研究

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林业科学研究 2016年第4期29卷 487-493页

作者：钱婷婷杨志灵曾庆银中国科学院植物研究所北京100093 中国科学院大学北京100049 北京林业大学生物科学与技术学院北京100083

[目的]谷氨酰胺磷酸核糖焦磷酸转酰胺酶(ASE)在植物嘌呤合成中发挥着关键作用,本研究的目的是详细揭示杨树ASE蛋白的生化功能特性。[方法]通过半定量RT-PCR、蛋白质亚细胞定位以及测定纯化蛋白的催化活性等方法来研究其在体外的生化功能... 详细信息

[目的]谷氨酰胺磷酸核糖焦磷酸转酰胺酶(ASE)在植物嘌呤合成中发挥着关键作用,本研究的目的是详细揭示杨树ASE蛋白的生化功能特性。[方法]通过半定量RT-PCR、蛋白质亚细胞定位以及测定纯化蛋白的催化活性等方法来研究其在体外的生化功能,进一步通过互补拟南芥缺失突变体(atase2)来研究杨树ASE基因的体内生物学功能。[结果]从杨树基因组中鉴别出2个ASE基因,序列分析发现它们之间有很高的蛋白质序列相似性。半定量RT-PCR分析发现两个杨树ASE基因在根、茎、叶和芽中均表达。蛋白质亚细胞定位分析发现杨树ASE蛋白均定位在叶绿体中,而且两个杨树ASE蛋白均能完全互补拟南芥atase2突变体的表型。酶学性质分析表明,杨树两个ASE蛋白均能催化5-磷酸核糖-α-焦磷酸生成5-磷酸核糖-β-胺。[结论]本研究预示着两个杨树ASE蛋白在嘌呤合成中均发挥着重要作用。

关键词： ASE基因基因表达酶学功能突变体

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上海人口老龄化对消费水平的影响研究

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西北人口 2016年第6期37卷 78-85页

作者：钱婷婷上海社会科学院经济研究所上海200235 上海应用技术大学城市建设与安全工程学院上海201418

老龄化已成为严重影响上海经济社会发展的突出因素。在分析上海市人口老龄化的进程与主要特征,指出人口老龄化对消费需求的影响路径的基础上,关注上海市城乡居民消费水平的变动情况,运用上海市1978年-2013年有关人口年龄结构、消费水平... 详细信息

老龄化已成为严重影响上海经济社会发展的突出因素。在分析上海市人口老龄化的进程与主要特征,指出人口老龄化对消费需求的影响路径的基础上,关注上海市城乡居民消费水平的变动情况,运用上海市1978年-2013年有关人口年龄结构、消费水平以及相关经济发展的时间序列数据,分析上海市人口老龄化与居民消费水平两者之间的关系以及对居民消费水平构成影响的其他因素,研究表明:人均消费水平、人均GDP、人均可支配收入与老年人口比重之间存在线性相关关系,人口老龄化对消费水平的影响呈负向影响。而人口老龄化对居民消费水平的负向影响将会给社会经济生活等带来诸多意义深远的问题。物价指数、人口自然增长率以及劳动人口比重等对城镇居民消费水平的作用并不显著。

关键词：上海人口老龄化老年人口比重居民消费

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