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北方茶园数字化研究与实践

中国茶叶 2024年第4期46卷 58-65页

作者：王梓清王武闯田国强王林政毕国宇王林军威海市农业农村事务服务中心山东威海264200 山东科润信息技术有限公司山东威海264400 威海双丰神农科技有限公司山东威海264200

在北方茶园中应用数字化技术,能够针对制约北方茶产业发展的诸多不利因素提供技术和管理方案,推动北方茶叶产业高质量发展。文章阐述了北方茶区发展数字化茶园的必要性和可行性,介绍了北方数字化茶园的技术研究与应用现状,包括茶园气象... 详细信息

在北方茶园中应用数字化技术,能够针对制约北方茶产业发展的诸多不利因素提供技术和管理方案,推动北方茶叶产业高质量发展。文章阐述了北方茶区发展数字化茶园的必要性和可行性,介绍了北方数字化茶园的技术研究与应用现状,包括茶园气象灾害预测、病虫害智能监测预警、茶园可视化实时监控系统,以及数字茶叶等方面,并提出了北方数字茶园今后的发展趋势。

关键词：数字化气象灾害预测病虫害智能监测预警实时监控系统

Water molecules bonded to the carboxylate groups at the inorganic-organic interface of an inorganic nanocrystal coated with alkanoate ligands

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National Science Review 2022年第2期9卷 78-87页

作者： Jiongzhao Li Weicheng Cao Yufei Shu Haibing Zhang Xudong Qian Xueqian Kong linjun wang Xiaogang Peng Zhejiang Key Laboratory of Excited-State Materials Department of Chemistry Zhejiang University

High-quality colloidal nanocrystals are commonly synthesized in hydrocarbon solvents with alkanoates as the most common organic *** molecules with an approximately equal number of surface alkanoate ligands are identified at the inorganic-organic interface for all types of colloidal nanocrystals studied,and investigated quantitatively using CdSe nanocrystals as the model *** ligands are coordinated to the surface metal ions and the first monolayer of water molecules is found to bond to the carboxylate groups of alkanoate ligands through hydrogen *** monolayer(s) of water molecules can further be adsorbed through hydrogen bonds to the first monolayer of water *** nearly ideal environment for hydrogen bonding at the inorganic-organic interface of alkanoate-coated nanocrystals helps to rapidly and stably enrich the interface-bonded water molecules,most of which are difficult to remove through vacuum treatment,thermal annealing and chemical *** water-enriched structure of the inorganic-organic interface of high-quality colloidal nanocrystals must be taken into account in order to understand the synthesis,processing and properties of these novel materials.

关键词： nanocrystals quantum dots water carboxylate ligands interface

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基于昼夜节律探讨从肝论治咳嗽

西部中医药 2024年第6期37卷 20-23页

作者：王琳君李耀辉刘励寒钟珍陕西中医药大学陕西咸阳711301 陕西省中医医院陕西西安710000

从中医学对咳嗽病因、病机的认识出发,提出肝脏功能失调亦可导致咳嗽频发。而肝主疏泄调节,故昼夜节律紊乱也是许多呼吸道疾病加重或者复发的主要原因之一。认为当前调节昼夜节律的临床用药治疗有限,但可以探索调节昼夜节律的诊疗措施,... 详细信息

从中医学对咳嗽病因、病机的认识出发,提出肝脏功能失调亦可导致咳嗽频发。而肝主疏泄调节,故昼夜节律紊乱也是许多呼吸道疾病加重或者复发的主要原因之一。认为当前调节昼夜节律的临床用药治疗有限,但可以探索调节昼夜节律的诊疗措施,为临床诊疗开辟新思路、新途径。

关键词：咳嗽昼夜节律从肝论治肝主疏泄

Enhanced bright green luminescence from GdOF:Ho^(3+) up-conversion phosphor via Yb^(3+) doping

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Journal of Rare Earths 2024年第2期42卷 263-269,I0002页

作者： linjun Qin Yue Guo Jing Xu Lixi wang Qitu Zhang College of Materials Science and Engineering Nanjing Tech UniversityNanjing211816China

In this paper,a series of GdOF-based green phosphors doped with Ho^(3+) and Yb^(3+) ions was prepared by a simple co-precipitation *** crystal structure s and optical prope rties were investigated in *** intensity of the emission of GdOF:Yb^(3+),Ho^(3+) phosphors is enhanced by the effective energy transfer from Yb^(3+) to Ho^(3+),and the optimal luminescence is achieved with the Ho^(3+)doping amount of 0.1 mol%as well as Yb^(3+) doping amount of 5 mol%.Tunable UC emission of samples is achieved by adjusting the doping concentration of Ho^(3+) or Yb^(3+).The purity of the green UC emission is further improved by enhancing the excitation pumping *** addition,logarithmic functions of green,red and nearinfrared radiation intensities were calculated versus logarithmic function of pump power for further study.A possible UC luminescence mechanism between Yb^(3+) and Ho^(3+) is discussed based on powerdependent UC luminescence spectrum and decay *** results suggest that GdOF:Yb^(3+),Ho^(3+)phosphors with bright and high-purity green UC emission have potential applications in the fields of bioimaging,display and illumination.

关键词： Up-conversion GdOF Lanthanide ions Rare earths

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桩-土相互作用研究进展

土工基础 2024年第3期38卷 453-458页

作者：萧和冯健雪马秀如张小勇王林均黄宝涛贵州民族大学建筑工程学院贵阳550025 贵州省工程地质灾害防治工程研究中心贵阳550025 广西交通投资集团有限公司南宁产530021 广西大学土木建筑工程学院南宁530004 浙江海洋大学海洋工程装备学院浙江舟山316000

桩基础具有承载力高、沉降量小等特点,在工程建设中广泛应用。桩-土界面力学特性是影响桩基础承载力与沉降变形的关键因素。工程实践中非饱和土体广泛分布,桩基础的沉降预测与承载力预估往往与理论相差甚远,非饱和土与桩相互作用的理论... 详细信息

桩基础具有承载力高、沉降量小等特点,在工程建设中广泛应用。桩-土界面力学特性是影响桩基础承载力与沉降变形的关键因素。工程实践中非饱和土体广泛分布,桩基础的沉降预测与承载力预估往往与理论相差甚远,非饱和土与桩相互作用的理论研究滞后于工程实践。系统总结了桩-土界面相互作用、桩-土间荷载传递规律、复合地基固结理论等方面的研究现状,指出目前复合地基沉降变形中的桩-土相互作用研究中存在的主要问题,为相关研究提供参考。

关键词：桩基工程非饱和土桩-土相互作用荷载传递复合地基固结

Nanocrystalline Diamond Films Deposited by Electron Assisted Hot Filament Chemical Vapor Deposition

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Journal of Rare Earths 2006年第Z1期24卷 107-110页

作者： Wu Nanchun Xia Yiben Tan Shouhong wang linjun School of Materials Science & Engineering Shanghai University Shanghai 200072 China Shanghai Institute of Ceramics Chinese Academy of China Shanghai 200050 China School of Materials Science & Engineering Shanghai University Shanghai 200072 China Shanghai Institute of Ceramics Chinese Academy of China Shanghai 200050 China School of Materials Science & Engineering Shanghai University Shanghai 200072 China

Nanocrystalline diamond films were deposited on polished Si wafer surface with electron assisted hot filament chemical vapor deposition at 1 kPa gas pressure, the deposited films were characterized and observed by Raman spectrum, X-ray diffraction, atomic force microscopy and semiconductor characterization system. The results show that when 8 A bias current is applied for 5 h, the surface roughness decreases to 28.5 nm. After 6 and 8 A bias current are applied for 1 h, and the nanocrystalline films deposition continue for 4 h with 0 A bias current at 1 kPa gas pressure. The nanocrystalline diamond films with 0.5×109 and 1×1010 Ω·cm resistivity respectively are obtained. It is demonstrated that electron bombardment plays an important role of nucleation to deposit diamond films with smooth surface and high resistivity.

关键词： nanocrystalline diamond film surface roughness resistivity EACVD

Cloud-Type-Dependent 1DVAR Algorithm for Retrieving Hydrometeors and Precipitation in Tropical Cyclone Nanmadol from GMI Data

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Advances in Atmospheric Sciences 2024年第3期41卷 407-419页

作者： linjun HAN Fuzhong WENG Hao HU Xiuqing HU School of the Environment China University of Geosciences(Wuhan)Wuhan 430074China Chinese Academy of Meteorological Sciences Beijing 100081China CMA Earth System Modeling and Prediction Centre Beijing 100081China Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites National Satellite Meteorological Center(National Center for Space Weather)of CMABeijing 100081China

Understanding the structure of tropical cyclone(TC)hydrometeors is crucial for detecting the changes in the distribution and intensity of *** this study,the GMI brightness temperature and cloud-dependent 1DVAR algorithm were used to retrieve the hydrometeor profiles and surface rain rate of TC Nanmadol(2022).The Advanced Radiative Transfer Modeling System(ARMS)was used to calculate the Jacobian and degrees of freedom(△DOF)of cloud water,rainwater,and graupel for different channels of GMI in convective *** retrieval results were compared with the Dual-frequency Precipitation Radar(DPR),GMI 2A,and IMERG *** is shown that from all channels of GMI,rain water has the highest△DOF,at *** to the radiance Jacobian to atmospheric state variables,cloud water emission dominates its *** rain water,the emission of channels 1–4 dominates *** with the GMI 2A precipitation product,the 1DVAR precipitation rate has a higher correlation coefficient(0.713)with the IMERG product and can better reflect the location of TC *** the TC eyewall,the highest radar echo top indicates strong *** the melting layer where Ka-band attenuation is strong,the double frequency difference of DPR data reflects the location of the *** DPR drop size distribution(DSD)product shows that there is a significant increase in particle size below the melting layer in the spiral rain ***,the particle size may be one of the main reasons for the smaller rain water below the melting layer retrieved from 1DVAR.

关键词： cloud-dependent 1DVAR hydrometeor precipitation GMI DPR

肝素酶与危重症相关肺动脉高压患者预后及病情严重程度的关系

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实用心脑肺血管病杂志 2024年第3期32卷 27-32页

作者：王林军岳建巍李建春冯菲李洪磊陈娣刘丽平兰州大学第一临床医学院甘肃省兰州市730000 兰州大学第一医院急诊重症医学科甘肃省兰州市730000

目的探讨肝素酶与危重症相关肺动脉高压(CIR-PH)患者预后及病情严重程度的关系。方法回顾性选取2021年4月-2022年6月兰州大学第一医院重症医学科收治的108例CIR-PH患者为研究对象,根据预后情况将其分为死亡组(n=28)和生存组(n=80)。... 详细信息

目的探讨肝素酶与危重症相关肺动脉高压(CIR-PH)患者预后及病情严重程度的关系。方法回顾性选取2021年4月-2022年6月兰州大学第一医院重症医学科收治的108例CIR-PH患者为研究对象,根据预后情况将其分为死亡组(n=28)和生存组(n=80)。比较两组一般资料[包括年龄、性别、BMI、肺动脉高压(PH)临床分类、肝素酶、NT-proBNP及急性生理学和慢性健康状况评价系统Ⅱ(APACHEⅡ)评分]、右心导管检查结果[包括平均肺动脉压(mPAP)、肺毛细血管楔压(PCWP)、肺血管阻力(PVR)、平均右心房压(mRAP)和心排血量(CO)]及超声心动图检查结果[包括右心室直径(RVD)、右心房直径(RAD)、肺动脉宽度(PAW)、肺动脉流速(PAV)、肺动脉压(PAP)、三尖瓣反流速度(TRV)]。CIR-PH患者预后的影响因素分析采用单因素、多因素Cox比例风险回归分析,采用ROC曲线分析肝素酶、NT-proBNP对CIR-PH患者死亡的预测价值,肝素酶与CIR-PH病情相关指标(NT-proBNP、APACHEⅡ评分、mPAP、PCWP、PVR、CO)的相关性分析采用Pearson相关分析。结果死亡组年龄、RVD、RAD大于生存组,肝素酶、NT-proBNP、APACHEⅡ评分、mPAP、PCWP、PVR、mRAP、PAP高于生存组,CO低于生存组,TRV快于生存组(P<0.05)。单因素Cox比例风险回归分析结果显示,年龄、肝素酶、NT-proBNP、APACHEⅡ评分、mPAP、PCWP、PVR、mRAP、CO、RVD、RAD、PAP、TRV可能是CIR-PH患者死亡的影响因素(P<0.05)。多因素Cox比例风险回归分析结果显示,肝素酶、NT-proBNP、mPAP、mRAP是CIR-PH患者死亡的独立影响因素(P<0.05)。ROC曲线分析结果显示,肝素酶预测CIR-PH患者死亡的AUC为0.784[95%CI(0.688~0.879)],最佳截断值为10.4μg/L,灵敏度为0.500,特异度为0.875;NT-proBNP预测CIR-PH患者死亡的AUC为0.761[95%CI(0.662~0.860)],最佳截断值为3775ng/L,灵敏度为0.357,特异度为0.950。Pearson相关分析结果显示,肝素酶与CIR-PH患者NT-proBNP(r=0.639)、APACHEⅡ评分(r=0.763)、mPAP(r=0.876)、PCWP(r=0.858)、PVR(r=0.846)呈正相关,与CO(r=-0.702)呈负相关(P<0.001)。结论肝素酶是CIR-PH患者死亡的独立影响因素,其对CIR-PH患者死亡有一定预测价值,且其与CIR-PH患者病情严重程度密切相关。

关键词：肺动脉高压危重症肝素裂合酶肝素酶预后

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Si/Nanocrystalline Diamond Film Heterojunction Diodes Preparation

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Journal of Rare Earths 2006年第Z1期24卷 45-48页

作者： Wu Nanchun Xia Yiben Tan Shouhong wang linjun Cui Jiangtao School of Materials Science & Engineering Shanghai University Shanghai 200072 China Shanghai Institute of Ceramics Chinese Academy of China Shanghai 200050 China School of Materials Science & Engineering Shanghai University Shanghai 200072 China Shanghai Institute of Ceramics Chinese Academy of China Shanghai 200050 China School of Materials Science & Engineering Shanghai University Shanghai 200072 China School of Materials Science & Engineering Shanghai University Shanghai 200072 China

With electron assisted hot filament chemical vapor deposition technology, nanocrystalline diamond films were deposited on polished n-(100)Si wafer surface. The deposited films were characterized and observed by Raman spectrum, X-ray diffraction, semiconductor characterization system and Hall effective measurement system. The results show that with EA-HFCVD, not only an undoped nanocrystalline diamond films with high-conductivity (p-type semiconducting) but also a p-n heterojunction diode between the nanocrystalline diamond films and n-Si substrate is fabricated successfully. The p-n heterojunction has smaller forward resistance and bigger positive resistance. The p-n junction effective is evident.

关键词： nanocrystalline diamond film p-n heterojunction diode rectification characterization EACVD