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Spatiotemporal Characteristics of Reference Evapotranspiration and Its Sensitivity Coefficients to Climate Factors in Huang-Huai-Hai Plain,China

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Journal of Integrative Agriculture 2013年第12期12卷 2280-2291页

作者： YANG jian-ying LIU Qin MEI Xu-rong YAN Chang-rong ju Hui XU jian-wen Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences State Engineering Laboratory of Efficient Water Use and Disaster Reduction for Crops Ministry of Agriculture Key Laboratory of Dryland Agriculture Ministry of Agriculture Key Laboratory of Agricultural Environment Ministry of Agriculture

Climate change will have important implications in water shore regions,such as Huang-Huai-Hai（3H） plain,where expected warmer and drier conditions might augment crop water *** analysis is important in understanding the relative importance of climatic variables to the variation in reference evapotranspiration（ET 0）.In this study,the 51-yr ET 0 during winter wheat and summer maize growing season were calculated from a data set of daily climate variables in 40 meteorological *** maps for key climate variables were estimated according to Kriging method and the spatial pattern of sensitivity coefficients for these key variables was *** addition,the slopes of the linear regression lines for sensitivity coefficients were *** showed that ET 0 during winter wheat growing season accounted for the largest proportion of annual ET 0,due to its long phenological days,while ET 0 was detected to decrease significantly with the magnitude of 0.5 mm yr-1in summer maize growing *** radiation is considered to be the most sensitive and primarily controlling variable for negative trend in ET 0 for summer maize season,and higher sensitive coefficient value of ET 0 to solar radiation and temperature were detected in east part and southwest part of 3H plain *** humidity was demonstrated as the most sensitive factor for ET 0 in winter wheat growing season and declining relativity humidity also primarily controlled a negative trend in ET 0,furthermore the sensitivity coefficient to relative humidity increased from west to *** eight sensitivity centrals were all found located in Shandong *** ET 0 along with its sensitivity maps under winter wheat-summer maize rotation system can be applied to predict the agricultural water demand and will assist water resources planning and management for this region.

关键词： ET 0 spatial distribution temporal trends sensitivity coefficient 3H plain

CO Clouds around SNR G21.8-0.6 and G32.8-0.1

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Chinese Journal of Astronomy and Astrophysics 2007年第5期7卷 705-711页

作者： jian.jun Zhou Xi-Zheng Zhang Hong-Bo Zhang Jarken Esimbek ju-Yong Zhang Bing-Gang ju National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 National Astronomical Observatories / Urumqi Observatory Chinese Academy of Sciences Urumqi 830011 Graduate School of Chinese Academy of Sciences Beijing 100049 Qinghai Station of Purple Mountain Observatory Chinese Academy of Sciences Delingha 817000

We made the first CO（1-0） mapping to SNR G21.8-0.6 and SNR G32.8-0.1, both associated with OH 1720MHz maser. Based on the morphological correspondence and velocity and position agreement between the radio remnant an... 详细信息

关键词： ISM clouds -- ISM individual (G21.8-0.6, G32.8-0.1 ) -- ISM molecules -- masers -- supernova remnants

Synthesis and Crystal Structure of 3,3'-Dimethyl-dibenzo-18-crown-6

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Chinese Journal of Structural Chemistry 2006年第6期25卷 757-760页

作者： NIU Mei-ju DOU jian-Min WANG Da-Qi LI Da-Cheng Department of Chemistry Liaocheng University Liaocheng 252059 China

3,3′-Dimethyl-dibenzo-18-crown-6 was synthesized and characterized by elemental analysis, FT-IR, ^1H NMR, UV, MS spectra and X-ray single-crystal diffraction. It belongs to orthorhombic, space group Pna21 with a = 8.0790（18）, b = 16.780（4）, c = 15.222（3） .A, Z= 4, V= 2063.6（8） A3 Dc = 1.250 g/cm^3,μ = 0.090 mm^-1, F（000） = 832, R = 0.0474 and wR = 0.1103. According to structural analysis, the title compound possesses a boat-like configuration.

关键词： crown ether 3,3'-dimethyl-dibenzo-18-crown-6 synthesis crystal structure

基于UPLC-Q TOF-MSE技术的藤黄健骨丸指纹图谱建立及共有峰鉴定

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应用化学 2024年第3期41卷 437-444页

作者：谢东胡健楠李念杨桔黄青皮子凤郑飞戴雨霖越皓长春中医药大学吉林省人参科学研究院长春130117 长春人民药业集团有限公司长春130033

建立藤黄健骨丸高效液相色谱(HPLC)指纹图谱,完善产品质量标准。采用Waters Symmetry C18(150 mm×2.1 mm,3.5μm)色谱柱;流速为0.4 mL/min;进样量为2μL;紫外检测波长为260 nm;在柱温30℃下以0.1%甲酸水(A)和0.1%甲酸乙腈(B)为流动相... 详细信息

建立藤黄健骨丸高效液相色谱(HPLC)指纹图谱,完善产品质量标准。采用Waters Symmetry C18(150 mm×2.1 mm,3.5μm)色谱柱;流速为0.4 mL/min;进样量为2μL;紫外检测波长为260 nm;在柱温30℃下以0.1%甲酸水(A)和0.1%甲酸乙腈(B)为流动相进行梯度洗脱。利用“中药色谱指纹图谱相似度评价系统(2012版本)”建立藤黄健骨丸指纹图谱,并分析相似度。采用液质联用技术(UPLC-Q TOF-MSE),根据化合物串联质谱信息结合对照品进行了共有峰结构鉴定。共确定了10批藤黄健骨丸指纹图谱中20个共有峰,相似度均在0.95以上。基于对照品和串联质谱信息指认了共有峰中13种成分的结构,并进行了峰归属。对10批藤黄健骨丸指纹图谱共有峰的相对保留时间和相对峰面积进行了计算,结果显示各批次样品共有峰的相对保留时间和相对峰面积均比较稳定,表明它们所对应的各成分含量较为均一。采用该指纹图谱对中间体进行了相似度评价,发现中间体与成品相关性良好。该方法精密度、重复性和稳定性好,不仅可用于藤黄健骨丸成品的质量控制,还可对中间体进行检测,用于生产过程的控制。

关键词：藤黄健骨丸高效液相色谱指纹图谱液质联用

Prediction and evaluation of optimum quenching temperature and microstructure in a 1300 MPa ultra-high-strength Q&P steel

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Journal of Iron and Steel Research International 2022年第2期29卷 307-315页

作者： Peng-fei Gao ju-hua Liang Wei-jian Chen Feng Li Zheng-zhi Zhao Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Beijing100083China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei230031AnhuiChina

The quenching and partitioning steel is the representative of the third generation of advanced high-strength *** effect of quenching temperature on the microstructure and mechanical property of ferrite-containing quenching and partitioning steel was studied by intercritical annealing quenching and partitioning *** preparing a test steel with a tensile strength of 1300 MPa and total elongation of 19%,it is found that the actual optimum quenching temperature was lower than that calculated according to the constrained carbon *** results indicate that the martensite start temperature of the austenite was overestimated when considering the diffusion of carbon *** grain size which is affected by low temperature and the existence of ferrite during intercritical annealing influenced the optimum quenching temperature.A scheme considering the diffusion of various alloying elements and austenite grain size was proposed and *** this scheme,the optimum quenching temperature of intercritically annealed quenching and partitioning steel with complex microstructures was well predicted.

关键词： Quenching and partitioning Constrained carbon equilibrium Retained austenite Martensite start temperature Plasticity Quenching temperature

Effect of CaF_(2) and CaO/Al_(2)O_(3) on viscosity and structure of TiO_(2)-bearing slag for electroslag remelting

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Journal of Iron and Steel Research International 2021年第12期28卷 1541-1550页

作者： jian-tao ju Kang-shuai Yang Zhi-hong Zhu Yue Gu Li-zhong Chang School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina Shaanxi Engineering Research Center of Metallurgical Xi’an710055ShaanxiChina School of Metallurgy Engineering Anhui University of TechnologyMa’anshan243002AnhuiChina

The relationship between the viscosity and structure of CaF_(2)-CaO-Al_(2)O_(3)-MgO-TiO_(2)slag with different CaF_(2)contents and CaO/Al_(2)O_(3)ratios was studied using the rotating cylinder method,Fourier transform infrared spectroscopy,and Raman *** activity coefficients of CaF_(2)and the CaO/Al_(2)O_(3)ratio were determined to understand the correlation between viscosity and structure of the *** results suggest that the slag viscosity reduces gradually with an increase in CaF_(2)content from 14.1 to 28.1 wt.%or CaO/Al_(2)O_(3)ratio from 0.9 to 1.5,and correspondingly apparent activation energy for viscous flow *** addition of CaF_(2)does not change the structure of the molten slag;however,the relaxation effect of the anionic species and the hindrance effect of the cationic species are promoted by substituting part of the non-bridging oxygens(NBO)with F−ions from CaF_(2),which is attributed to the formation of NBO-Ca^(2+)-F−and NBO-Ca^(2+)-NBO,***,as the CaO/Al_(2)O_(3)ratio increases,some of the Q4 units in the aluminate structure are depolymerized into Q2 units,so that the relative strength of the Al-O-Al linkage decreases,and the relative fraction of Ti2O64−chains increases,whereas that of O-Ti-O chains decreases slightly,resulting in depolymerization on the slag ***,the effect of the CaO/Al_(2)O_(3)ratio on the structure was greater than that of CaF_(2)because of the greater depolymerization *** variation in the activity can indirectly explain the relationship between the viscosity and structure of the aluminate structural units based on thermodynamic analysis.

关键词： Viscosity TiO_(2)-bearing slag Fourier transform infrared spectroscopy Raman spectrum Thermodynamic

超高效液相色谱-串联质谱检测蔗糖中47种农药残留量的方法

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药物分析杂志 2024年第6期44卷 979-989页

作者：谭菊英蒋洁刘庄蔚何虹杨欣智朱健萍邓鸣徐光辉王健赵庄卢日刚广西壮族自治区药品检验研究院南宁530021 中粮崇左糖业有限公司/广西壮族自治区甘蔗产业链延伸工程研究中心崇左532200 中粮营养健康研究院有限公司/营养健康与食品安全北京市重点实验室北京102209

目的:建立超高效液相色谱-串联质谱(UPLC-MS/MS)同时测定蔗糖中47种农药残留量的方法。方法:蔗糖样品经酸性乙腈提取,氮气吹干浓缩,采用LC-MS/MS进行分析检测,在多反应检测模式(MRM)下,用空白基质标准曲线-内标法进行定量。结果:各待测... 详细信息

目的:建立超高效液相色谱-串联质谱(UPLC-MS/MS)同时测定蔗糖中47种农药残留量的方法。方法:蔗糖样品经酸性乙腈提取,氮气吹干浓缩,采用LC-MS/MS进行分析检测,在多反应检测模式(MRM)下,用空白基质标准曲线-内标法进行定量。结果:各待测物质在一定浓度范围内线性良好(r>0.995),检测限为0.01~2.00μg·kg^(-1)。分别在蔗糖样品中添加47种农药标准溶液10、25、50μg·kg^(-1),进行标准添加回收试验,方法回收率为71.0%~106.0%,重复性RSD为0.90%~8.5%。15批蔗糖样品中2批检出噻虫嗪、噻虫胺,其余均未检出。结论:该方法具有前处理简单快捷、灵敏、准确等优点,符合农药残留检测要求,满足蔗糖中农药残留检测需要,可用于蔗糖的质量控制。

关键词：蔗糖农药残留液相色谱-质谱多反应监测模式基质效应内标法

胸腔镜手术中暂停呼吸快速肺萎陷技术的应用效果分析

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中国现代药物应用 2024年第4期18卷 12-15页

作者：贺增举李晶孔明健徐州矿务集团总医院 221006

目的评估暂停呼吸快速肺萎陷技术在胸腔镜手术中的应用效果。方法64例接受胸腔镜手术的患者,随机分为C组和D组,各32例。所有患者均进行左双腔管肺隔离技术,在此基础上C组患者采用传统单侧肺呼吸方式,D组患者采用暂停呼吸快速肺萎陷技术... 详细信息

目的评估暂停呼吸快速肺萎陷技术在胸腔镜手术中的应用效果。方法64例接受胸腔镜手术的患者,随机分为C组和D组,各32例。所有患者均进行左双腔管肺隔离技术,在此基础上C组患者采用传统单侧肺呼吸方式,D组患者采用暂停呼吸快速肺萎陷技术。比较两组患者平均动脉压(MAP)、心率、经皮动脉血氧饱和度(SpO_(2))、呼气末二氧化碳分压、手术相关指标(单肺通气时间、达到满意萎陷时间、完全肺萎陷时间)以及术中不同时间[胸膜开放即刻(T0)、胸膜开放2 min后(T1)、胸膜开放8 min后(T2)和胸膜开放14 min后(T3)、胸膜开放22 min后(T4)]肺萎陷质量。结果D组完全肺萎陷时间(13.75±0.93)min、达到满意萎陷时间(8.03±2.81)min以及单肺通气时间(94.17±11.05)min明显短于C组的(21.84±0.97)、(14.28±2.77)、(102.17±11.01)min,差异具有统计学意义(P0.05),心率T2、T3和T4时升高(P0.05),呼气末二氧化碳分压T1、T2、T3、T4时升高(P0.05),经皮血氧饱和度T1、T2、T3、T4时降低(P0.05)。与C组比较,D组T1、T2、T3、T4时平均动脉压趋于稳定(P>0.05),心率T1、T2、T3、T4时升高(P<0.05),经皮血氧饱和度T2、T3、T4时升高(P<0.05),呼气末二氧化碳分压T1、T2、T3、T4时升高(P<0.05)。结论胸腔镜手术患者采用暂停呼吸快速肺萎陷技术,特别是在切开胸膜时中断双肺通气120 s能够达到最好的效果,与传统单侧肺通气方法相比,可以加快肺萎陷,临床医生满意度高,可鼓励在临床实践中广泛采用。

关键词：胸腔镜手术单肺通气快速肺萎陷技术血氧饱和度肺萎陷评分

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冠心病中医核心数据集构建思路

中国中西医结合杂志 2024年第7期44卷 864-867页

作者：贾君迪鞠建庆高铸烨李金根赖润民石榴徐浩北京中医药大学研究生院北京100029 国家中医心血管病临床医学研究中心中国中医科学院西苑医院北京100091 北京中医药大学东直门医院心内科北京100700

核心数据集是临床采集的标准化数据集合,有助于数据标准统一,提高数据质量,为中医药高级别循证医学证据的形成提供支撑。笔者概述核心数据集的概念、研究现状与意义,探索冠心病中医核心数据集实施的思路方法,并提出难点与解决策略,以期... 详细信息

核心数据集是临床采集的标准化数据集合,有助于数据标准统一,提高数据质量,为中医药高级别循证医学证据的形成提供支撑。笔者概述核心数据集的概念、研究现状与意义,探索冠心病中医核心数据集实施的思路方法,并提出难点与解决策略,以期为构建具有中医特色的核心数据集、提升中医药研究质量提供基础。

关键词：核心数据集中医中西医结合冠心病