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Rice canopy temperature is affected by nitrogen fertilizer

Journal of Integrative Agriculture 2024年第3期23卷 824-835页

作者： Min Jiang Zhang Chen Yuan li Xiaomin Huang lifen Huang Zhongyang Huo Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou UniversityYangzhou 225009China Jiangsu Co-lnnovation Center for Modern Production Technology of Grain Crops Yangzhou UniversityYangzhou 225009China

Canopy temperature strongly influences crop yield formation and is closely related to plant physiological traits.However, the effects of nitrogen treatment on canopy temperature and rice growth have yet to be comprehensively examined. We conducted a two-year field experiment with three rice varieties(HD-5, NJ-9108, and YJ-805) and three nitrogen treatments(zero-N control(CK), 200 kg ha~(–1)(MN), and 300 kg ha~(–1)(HN)). We measured canopy temperature using a drone equipped with a high-precision camera at the six stages of the growth period. Generally,canopy temperature was significantly higher for CK than for MN and HN during the tillering, jointing, booting, and heading stages. The temperature was not significantly different among the nitrogen treatments between the milky and waxy stages. The canopy temperature of different rice varieties was found to follow the order: HD-5>NJ-9108>YJ-805, but the difference was not significant. The canopy temperature of rice was mainly related to plant traits, such as shoot fresh weight(correlation coefficient r=–0.895), plant water content(–0.912), net photosynthesis(–0.84), stomatal conductance(–0.91), transpiration rate(–0.90), and leaf stomatal area(–0.83). A structural equation model(SEM) showed that nitrogen fertilizer was an important factor affecting the rice canopy temperature.Our study revealed:(1) A suite of plant traits was associated with the nitrogen effects on canopy temperature,(2) the heading stage was the best time to observe rice canopy temperature, and(3) at that stage, canopy temperature was negatively correlated with rice yield, panicle number, and grain number per panicle. This study suggests that canopy temperature can be a convenient and accurate indicator of rice growth and yield prediction.

关键词： canopy temperature rice physiological and biochemical characteristics yield

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Polarization-dependent photoinduced metal–insulator transitions in manganites

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Science Bulletin 2024年第2期69卷 183-189页

作者： lina Deng Weiye Zhang Hanxuan lin lifen Xiang Ying Xu Yadi Wang Qiang li Yinyan Zhu Xiaodong Zhou Wenbin Wang lifeng Yin Hangwen Guo Chuanshan Tian Jian Shen State Key Laboratory of Surface Physics Institute for Nanoelectronic Devices and Quantum Computingand Department of PhysicsFudan UniversityShanghai 200433China Shanghai Research Center for Quantum Sciences Shanghai 201315China Zhangjiang Fudan International Innovation Center Fudan UniversityShanghai 201210China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China Shanghai Branch CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum PhysicsShanghai 201315China

In correlated oxides,collaborative manipulation on light intensity,wavelength,pulse duration and polarization has yielded many exotic discoveries,such as phase transitions and novel quantum states.In view of potential optoelectronic applications,tailoring long-lived static properties by light-induced effects is highly desirable.So far,the polarization state of light has rarely been reported as a control parameter for this purpose.Here,we report polarization-dependent metal-to-insulator transition(MIT)in phaseseparated manganite thin films,introducing a new degree of freedom to control static MIT.Specifically,we observed giant photoinduced resistance jumps with striking features:(1)a single resistance jump occurs upon a linearly polarized light incident with a chosen polarization angle,and a second resistance jump occurs when the polarization angle changes;(2)the amplitude of the second resistance jump depends sensitively on the actual change of the polarization angles.linear transmittance measurements reveal that the origin of the above phenomena is closely related to the coexistence of anisotropic micro-domains.Our results represent a first step to utilize light polarization as an active knob to manipulate static phase transitions,pointing towards new pathways for nonvolatile optoelectronic devices and sensors.

关键词： Metal-insulator phase transitions Polarization of light Electronic phase separation Selective domain controllability

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Effectiveness and safety of Jiawei Xiaoyao pill(加味逍遥丸)in the treatment of premenstrual syndrome(liver depression,spleen deficiency,and blood-heat syndrome):a multi-center,randomized,placebo-controlled trial

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Journal of Traditional Chinese Medicine 2024年第2期44卷 373-380页

作者： li Xiyu YANG Yanhong SUN Jian NIE Quanfang liU lifen li Guifen YU Junping ZHANG Zhuangjin XU Yi ZOU Ting SHI Yun Department of Gynecology Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100700China Department of Gynecology Luoyang 1st Hospital of TCMLuoyang 471099China Department of Gynecology Zaozhuang Hospital of TCMZaozhuang 277099China Department of Gynecology and Obstetrics Loudi Central HospitalLoudi 417099China Department of Gynecology and Obstetrics Yiyang 1st Hospital of TCMYiyang 413002China Department of Gynecology Harrison International Peace HospitalHengshui 053000China Department of Gynecology and Obstetrics Shanxi Fenyang HospitalFenyang 032299China Department of Gynecology and Obstetrics Hengyang Chinese Medicine HospitalHengyang 421001China Scientific Research Institute of Beijing Tongrentang Technology Development Co. Ltd.Beijing 100061China Female Reproductive and Health Medicine Research Committee of Chinese Traditional Medicine Association Beijing 100061China

OBJECTIVE:To investigate the effectiveness and safety of Jiawei Xiaoyao pill(加味逍遥丸,JXP)in the treatment of symptoms associated with premenstrual syndrome(PMS).METHODS:A total of 144 regularly menstruating women with PMS were recruited at 8 sites in China from August 2017 to December 2018,and randomized to receive either a JXP or a matching placebo(12 g/d,6 g twice a day)for 3 menstrual cycles.The primary indicator was the reduced Daily Record of Severity of Problems(DRSP)scores in the luteal phase after 3 months of treatment.The safety outcomes included clinical adverse events(AEs),adverse reactions(ARs),changes in vital signs,and laboratory tests.RESULTS:JXP surpassed the placebo in reducing DRSP scores(psychological/somatic dysfunction)in the luteal phase over 3 menstrual cycles of treatment(PFAS=0.002,PPPS=0.001).Additionally,there were no significant differences in the incidence of AEs,severe AEs,withdrawal due to AEs and ARs between the two groups(all P>0.05),and no clinically significant adverse medical events related to the test drug observed.CONCLUSIONS:JXP was superior to the placebo in relieving the symptoms associated with PMS,which signified that JXP may be effective,safe,and welltolerated as an alternative therapy.

关键词： premenstrual syndrome randomized controlled trial double-blind method Jiawei Xiaoyao pill

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A Comparative Analysis of the Origin and Formation Between Chinese Characters and English Alphabets

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汉语教学方法与技术 2023年第2期6卷 20-41页

作者： Xuan Song lifen li Cleveland State University Kent State University

This research is based on the framework of social constructivism,utilizing the principle of Human Universals as a methodology to compare the similarities and differences between the ideation and formation methods of Chinese characters and English alphabets.Through comparative analysis of the ideation of English letters(pictogramme)and the origin of Chinese characters,known as the"Six Categories Theory,"we discover their alignment in terms of social,traditional,and cultural aspects.This suggests that different ethnic groups share common features in terms of life experience,learning cognitive development,and thinking habits.This study also finds that the origins of English letters and Chinese characters share similar linguistic features in their methods of constructing letters/characters,such as pictographic,ideographic,and semantic characteristics.Exploring these commonalities contributes to promoting learning and communication between Chinese and English characters.Additionally,by focusing on socio-cultural aspects,traditional customs,and cognitive learning,this study aims to break away from the traditional linguistic research approach that solely focuses on language differences.This provides a broader perspective and richer dimensions for Chinese and English language learning,facilitating the development of cross-linguistic and cross-cultural communication.

关键词： Origin,Chinese Characters English Alphabets Philosophical Views Formation Cultural Beliefs Social Conventions Cross-linguistic and cross-cultural communication

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光电催化耦合生物电化学技术去除VOCs研究进展

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化工环保 2024年第3期44卷 307-318页

作者：李东子柳丽芬大连理工大学环境学院辽宁大连116081 大连理工大学化工、海洋与生命学院辽宁盘锦122441

通过研发和应用高活性单原子催化剂,整合生物电化学和光电催化作用,光电催化耦合生物电化学技术实现了气-液一体化和高效低碳的VOCs净化处理。本文综述了光电催化、微生物燃料电池产电驱动阴极光电耦合催化去除VOCs,以及复合亚纳米高效... 详细信息

通过研发和应用高活性单原子催化剂,整合生物电化学和光电催化作用,光电催化耦合生物电化学技术实现了气-液一体化和高效低碳的VOCs净化处理。本文综述了光电催化、微生物燃料电池产电驱动阴极光电耦合催化去除VOCs,以及复合亚纳米高效催化剂研发方面的创新成果,对光电催化与生物电化学联合治理VOCs的技术优势、应用前景以及所面临的机遇和挑战进行了深入探讨。

关键词： VOCs 光电催化微生物燃料电池亚纳米催化剂

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基于互联网下远程延续性健康教育对妊娠合并高血糖患者血糖控制、心理状况和自我管理能力的影响

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中国基层医药 2024年第3期31卷 455-458页

作者：李丽芬吕素珍李妙红丽水市中心医院内分泌科丽水323000 丽水市中心医院产科丽水323000

目的探讨基于互联网下远程延续性健康教育对妊娠合并高血糖患者血糖控制、心理状况和自我管理能力的影响。方法选取丽水市中心医院2020年2月至2022年2月诊治的妊娠合并高血糖患者110例,采用随机数字表法将其分为观察组(55例)与对照组(55... 详细信息

目的探讨基于互联网下远程延续性健康教育对妊娠合并高血糖患者血糖控制、心理状况和自我管理能力的影响。方法选取丽水市中心医院2020年2月至2022年2月诊治的妊娠合并高血糖患者110例,采用随机数字表法将其分为观察组(55例)与对照组(55例)。对照组采取常规延续性健康教育,观察组在对照组基础上采用基于互联网下远程延续性健康教育。比较两组遵医行为情况,干预前后血糖、心理状况和自我管理能力变化以及早产和剖宫产发生情况。结果观察组完全遵从[83.64%(46/55)]高于对照组[67.27%(37/55)](χ^(2)=3.98,P<0.05)。观察组干预后空腹血糖(FBG)[(5.23±0.57)mmol/L]、餐后2 h血糖(2hBG)[(7.12±0.65)mmol/L]均低于对照组的(6.30±0.65)mmol/L和(8.08±0.73)mmol/L(t=9.18、7.28,均P<0.05)。观察组干预后抑郁自评量表(SDS)评分[(42.34±2.57)分]、焦虑自评量表(SAS)评分[(41.36±2.68)分]均低于对照组的(47.82±2.95)分和(46.92±3.14)分(t=10.39、9.99,均P<0.05)。观察组干预后糖尿病自我管理能力量表(SDSCA)评分[(32.29±5.65)分]高于对照组的(23.47±4.71)分(t=8.89,P<0.05)。观察组早产[3.64%(2/55)]和剖宫产率[27.27%(15/55)]均低于对照组[14.55%(8/55)和58.18%(32/55)](χ^(2)=3.96、10.74,均P<0.05)。结论妊娠合并高血糖患者采用基于互联网下远程延续性健康教育可提高患者遵医行为,患者血糖显著降低,患者心理状况显著改善,患者自我管理能力显著提高,可减少早产和剖宫产发生。

关键词：妊娠高血糖症计算机通信网络健康教育延续性医护远程医学抑郁焦虑早产剖宫产术

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膀胱结石啮齿类动物模型的制备方法及应用进展

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中国药理学与毒理学杂志 2024年第6期38卷 455-461页

作者：陈丽芬许丽孙祖越国家卫生健康委员会生育调节药械重点实验室上海生殖健康药具工程技术研究中心上海市生物医药技术研究院中国生育调节药物毒理检测中心上海200237

膀胱结石是一种泌尿系统疾病,多源于地理环境、饮食习惯、种族遗传及各种尿路疾病等。为研究其发生机制、开发治疗药物并寻找防治措施,有必要建立或改进膀胱结石实验动物模型。膀胱结石实验动物模型的制备方法共有4类:物理诱导、化学诱... 详细信息

膀胱结石是一种泌尿系统疾病,多源于地理环境、饮食习惯、种族遗传及各种尿路疾病等。为研究其发生机制、开发治疗药物并寻找防治措施,有必要建立或改进膀胱结石实验动物模型。膀胱结石实验动物模型的制备方法共有4类:物理诱导、化学诱导、微生物诱导和基因敲除。本综述对膀胱结石啮齿类实验动物模型制备方法、特征和优缺点进行归类总结,重点介绍模型的制备流程、周期和有效性,并比较其特点,指出现有模型在药物研发应用中存在的问题,以期为防治膀胱结石疾病药械的非临床有效性及安全性研究提供参考。

关键词：膀胱结石啮齿类动物模型诱导

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Conductivity of (Zr_(1-x)M_x)O_2, Ceramic

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International Journal of Minerals,Metallurgy and Materials 2000年第1期14卷 45-47页

作者： Fushen li Ning Chen lifen li Yang li Laboratory on Solid Electrolytes and Metallurgical Testing Techniques, Beijing, 100083, China Laboratory on Solid Electrolytes and Metallurgical Testing Techniques Beijing 100083 China

In the ZrO_2-based ceramic systems doped with different oxides (Y_(2)O_3, MgO and Al_(2)O_3), the behaviors of electronic and ionic conductivity have been investigated by the quantum chemical SCF-X_α-SW method. The results of the electronic energy spectra and local state density of atoms show that, for the ZrO_2 system doped with Al_2O_3, the energy gap near the Fermi energy level becomes smaller, which implies that the electronic conductivity increases. Since the binding energy between Al and O atoms is increased, the energy for oxygen vacancy migrating is enhanced and the ionic conductivity decreases. In the M_xO_y-doped ZrO_2 systems, due to the doping effect of Al_2O_3, MgO and Y_2O_3, the ionic conductivity increases successively, and the electronic conductivity decreases successively. The cal- culation results are in agreement with that of references and experience.

关键词： Zirconia Doping Conductivity, SCF-Xα -SW method

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Competitive polycondensation of model compound melamine-urea-formaldehyed(MUF)resin system by^(13)C NMR

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Journal of Bioresources and Bioproducts 2020年第1期5卷 60-66页

作者： Jiankun liang Quan li Zhigang Wu Guanben Du Taohong li Hong Lei lifen li Kaili University Qiandongnan 556011China College of Forestry Guizhou UniversityGuiyang 550025China Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products Southwest Forestry UniversityKunming 650224China

Melamine-urea-formaldehyde(MUF)resin is an excellent adhesive in the field of wood adhe-sives,however the competition mechanism is questionable which affects the structure control and performance optimization of the resin.In this study,the competitive resin synthesis poly-condensation reaction of MUF system under alkaline condition was studied based on the model compound 1,3-dihydroxymethyl urea(UF_(2))and melamine(M)system,and the competitive reac-tion mechanism in the system was deduced by^(13)C NMR quantitative analysis.The results show that the energy barrier of hydroxymethylation of melamine is lower than that of urea,and the priority of hydroxymethylation is lower;the addition of melamine results in a large amount of hy-drolysis of UF_(2),and the formed free formaldehyde,resulting in hydroxymethylation of melamine;there is obvious polycondensation reaction in UF_(2)+M system,mainly from the relationship be-tween hydroxymethylurea and melamine or hydroxymethylmelamine.The type I bridge bond structure of polycondensation mainly comes from the reaction of UF_(2) and M,which is difficult to form the type II bridge bond.At low molar ratio,the formation of bridge bond is superior to that of ether bond.With the increase of molar ratio,the formation of ether bond shows advantages,but there is obvious competition between them.There may be competitive presence of the UF self-condensation products,melamine-formaldehyde(MF)self-condensation products and MUF co-condensed products after the polycondensation reaction.

关键词： Model compound Melamine-urea-formaldehyde(MUF) Copolycondensation Competitiveness

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低浓度氟化钠对人牙髓细胞的成骨/成牙本质分化的影响

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口腔疾病防治 2024年第1期32卷 22-28页

作者：李莉芬韩俊力江龙上海交通大学医学院附属第九人民医院口腔综合科上海交通大学口腔医学院国家口腔医学中心国家口腔疾病临床研究中心上海市口腔医学重点实验室上海市口腔医学研究所上海200011

目的探讨低浓度氟化钠对人牙髓细胞(human dental pulp cells,hDPCs)成骨/成牙本质分化的影响。方法本研究已通过单位伦理委员会审查批准。原代培养hDPCs,采用MTT法检测不同浓度氟化钠对hDPCs增殖的影响;选取合适浓度的氟化钠加入成骨/... 详细信息

目的探讨低浓度氟化钠对人牙髓细胞(human dental pulp cells,hDPCs)成骨/成牙本质分化的影响。方法本研究已通过单位伦理委员会审查批准。原代培养hDPCs,采用MTT法检测不同浓度氟化钠对hDPCs增殖的影响;选取合适浓度的氟化钠加入成骨/成牙本质分化诱导培养液中,对hDPCs进行体外诱导,通过茜素红染色检测hDPCs成骨/成牙本质分化能力的变化,RT⁃qPCR检测分化相关基因的mRNA表达;同时通过RT⁃qPCR和Western blot检测hDPCs成骨/成牙本质分化过程中内质网应激相关基因的表达。结果低浓度氟化钠(0.1 mmol/L)在体外可刺激hDPCs增殖,高浓度氟化钠(5~10 mmol/L)可抑制hDPCs增殖(Plicing x⁃box binding protein⁃1,sXBP1)、葡萄糖调节蛋白78(glucose⁃regulated protein 78,GRP78)以及活化转录因子4(activating transcription factor 4,ATF4)表达升高(Plike ER⁃resident kinase,p⁃PERK)和ATF4蛋白表达增加(P<0.05)。结论低剂量氟化钠促进人牙髓细胞的成骨/成牙本质分化并伴有内质网应激水平的升高。

关键词：人牙髓细胞氟化钠增殖成骨/成牙本质分化内质网应激剪切X盒结合蛋白1 活化转录因子4 葡萄糖调节蛋白78 蛋白激酶样内质网激酶真核起始因子⁃2α

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