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新式剖宫产76例临床分析

井冈山医专学报 2001年第2期8卷 71-72页

作者：温庆荣谢勤英宋英杨晶珍赣州市妇幼保健院江西赣州市341000

目的探讨新式剖宫产的临床应用。方法对 152例有剖宫产指征的孕妇随机分为二组，采用不同的方法进行手术，新式剖宫产组 76例，与同期下腹部 pfannestial横切口腹膜外剖宫产组 76例进行多项指标对照。结果新式剖宫产手术时间短，术后排... 详细信息

目的探讨新式剖宫产的临床应用。方法对 152例有剖宫产指征的孕妇随机分为二组，采用不同的方法进行手术，新式剖宫产组 76例，与同期下腹部 pfannestial横切口腹膜外剖宫产组 76例进行多项指标对照。结果新式剖宫产手术时间短，术后排尿异常少，两组比较有显著差异 (P< 0. 05)。结论新式剖宫产手术时间短，术后恢复快，并发证少，值得临床推广应用。

关键词：剖宫产并发症改良术式手术方法

Morphology Study for GeV Emission of Nearby Supernova Remnant G332.5-5.6

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Research in Astronomy and Astrophysics 2024年第4期24卷 134-140页

作者： Ming-Hong Luo qing-wen Tang Xiu-rong Mo Department of Physics School of Physics and Materials ScienceNanchang UniversityNanchang 330031China

A spatial template is important to study nearby supernova remnants(SNRs).For SNR G332.5-5.6,we report a Gaussian disk with a radius of about 1°.06 to be a potential good spatial model in the γ-ray *** this new Gaussian disk,its GeV lightcurve shows a significant variability of about seven *** γ-ray observations of this SNR could be explained well either by a leptonic model or a hadronic model,in which a flat spectrum for the ejected electrons/protons is required.

关键词： ISM:supernova remnants gamma rays:ISM

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民间中药三叶青的研究进展

中南药学 2016年第12期14卷 1336-1341页

作者：徐硕金鹏飞徐文峰姜文清何笑荣北京医院药学部北京100730

通过查阅国内外相关文献,进行分析和总结,对三叶青的化学成分、生物活性及质量控制研究进行综述。结果显示从三叶青中鉴定出的化学成分包括黄酮类、酚酸类、三萜类、甾类和二苯乙烯类等,现代药理研究表明三叶青具有抗肿瘤、抗氧化、免... 详细信息

通过查阅国内外相关文献,进行分析和总结,对三叶青的化学成分、生物活性及质量控制研究进行综述。结果显示从三叶青中鉴定出的化学成分包括黄酮类、酚酸类、三萜类、甾类和二苯乙烯类等,现代药理研究表明三叶青具有抗肿瘤、抗氧化、免疫调节、抗病毒、抗炎、镇痛、解热、保肝等多种生物活性。三叶青药材质量控制方法包括高效液相色谱指纹图谱研究和指标成分的含量测定。三叶青的研究尽管取得了一定的进展,但仍存在一些问题,需要进一步深入探讨。

关键词：三叶青化学成分生物活性质量控制

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超临界温度甲烷吸附的晶格理论及实验

上海交通大学学报 2003年第7期37卷 1137-1140页

作者：杨晓东林文胜郑青榕顾安忠鲁雪生上海交通大学机械与动力工程学院上海200030

运用一个基于 Ono- Kondo晶格理论模型的新方程 ,描述了甲烷在狭缝状微孔内的超临界温度高压吸附 .为检验理论模型 ,用体积法测量了压力为 0～ 6MPa范围内甲烷在高比表面活性炭上的 Gibbs吸附量 .对比模型与实验结果显示。

关键词：吸附超临界温度活性炭

Response of carbon footprint to plastic film mulch application in spring maize production and mitigation strategy

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Journal of Integrative Agriculture 2021年第7期20卷 1933-1943页

作者： CHEN Bao-qing Shahar BARAM DONG wen-yi HE wen-qing LIU En-ke YAN Chang-rong Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Institute for Soil Water and Environmental SciencesAgricultural Research Organization(ARO)Volcani Research CenterBet Dagan 50250Israel

Producing more food with a lower environmental cost is one of the most crucial challenges worldwide. Plastic mulching has developed as one of the most dominant practices to improve crop yields, however its impacts on greenhouse gas(GHG) emissions during the production life cycle of a crop are still unclear. The objective of this work is to quantify the impacts of plastic film on GHG emissions and to reduce GHG emissions with innovative agronomic practices. Carbon footprint per unit of area(CFa), per unit of maize grain yield(CFy), and per unit of economic output(CFe) were evaluated for three maize cultivation systems: a no mulch system, a conventional plastic mulching system(PM) and a biennial plastic mulching pattern, namely a ’one film for 2 years’ system(PM2), during 2015–2018 in a maize field located on the Loess Plateau of China. The results suggested that PM induced a 24% improvement in maize yields during the four experimental years compared to a no-mulch treatment(NM). However, PM dramatically increased the CFa by 69%, 59% of which was created by the input of the plastic film material, and 10% was created by increases in the soil N2O emissions. The yield improvements from PM could not offset the increases in CFa, and CFy and CFe were both increased by 36%. Shifting from PM to PM2 did not reduce crop yields, but it led to a 21% reduction in CFa and 23% reductions in CFy and CFe due to the reduced input amount of plastic film, decreased soil N2O emissions, and less diesel oil used for tillage. Compared to NM, CFy and CFe were only 5% higher in PM2. This study highlights the necessity of reducing the amount of plastic film input in the development of low-carbon agriculture and shifting from conventional PM cultivation to PM2 could be an efficient option for mitigating GHG emissions while sustaining high crop yields in plastic mulched fields.

关键词： carbon footprint greenhouse gas plastic film maize

Determination of Specific Refractive Index Increment (dn/dc)_μ at a Constant Chemical Potential,for Solutions of Polymer in Mixed Solvents by the GPC Method

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Chemical Research in Chinese Universities 2007年第5期23卷 602-606页

作者： WANG qing-guo LI Xiao-wen CHENG rong-shi Department of Chemistry Shenzhen University Shenzhen 518060 P. R. China Department of Chemistry Nanjing Untverstty Nanjing 210093 P. R. China

A new chromatographic method is described for the determination of specific refractive index increment（dn/dc）μ at a constant chemical potential,for polymer/mixed solvent *** this method the（dn/dc）is obtained by measuring the areas of solvated-polymer peaks when the mixed solvent is used as an *** of（dn/dc）μ for the poly（dimethylsiloxane）（PDMS）-benzene-methanol system,determined by the proposed method are in good agreement with those determined by the conventional dialysis *** new approach has the advantages of simplicity,fast speed,and high *** experimental results for stearic acid-chloroform-methanol system show that this method can also be applied to nonpolymer/mixed solvent systems for the determination of（dn/dc）μ.

关键词： Specific refractive index increment GPC Poly(dimethylsiloxane) Stearic acid

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基于一体化轴系的消像旋组件设计

激光与红外 2021年第1期51卷 85-88页

作者：高世林赵晓敏刘京生刘宏旭温庆荣杨加强华北光电技术研究所北京100015

介绍了一种基于一体化轴系设计的棱镜消像旋组件,以及光学装调方法。该组件可用于机载光电雷达、车载周视瞄准仪等光学系统中,解决了光学系统像方图像旋转的问题。该组件采用一体化轴系设计,即在主轴上直接加工出轴承内圈沟道;主轴、滚... 详细信息

介绍了一种基于一体化轴系设计的棱镜消像旋组件,以及光学装调方法。该组件可用于机载光电雷达、车载周视瞄准仪等光学系统中,解决了光学系统像方图像旋转的问题。该组件采用一体化轴系设计,即在主轴上直接加工出轴承内圈沟道;主轴、滚珠、保持架与轴承外圈一体化装配。同时棱镜组件可以在主轴内实现一维调整,以确保棱镜视轴与机械轴的重合。通过本文所介绍的光学装调方法,可以使消像旋组件棱镜的光轴回转精度达到±12″。相对于其他消像旋组件的轴系设计,具有精度高、稳定性强、体积小、质量轻、结构简单、易于装调等特点。

关键词：一体化轴系消像旋光轴回转精度

Hubble parameter estimation via dark sirens with the LISA-Taiji network

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National Science Review 2022年第2期9卷 52-62页

作者： Renjie Wang wen-Hong Ruan qing Yang Zong-Kuan Guo rong-Gen Cai Bin Hu Department of Astronomy Beijing Normal University CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences College of Engineering Physics Shenzhen Technology University School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences

The Hubble parameter is one of the central parameters in modern cosmology,and describes the present expansion rate of the *** values of the parameter inferred from late-time observations are systematically higher than those inferred from early-time measurements by about 10%.To reach a robust conclusion,independent probes with accuracy at percent levels are *** waves from compact binary coalescence events can be formulated into the standard siren approach to provide an independent Hubble parameter *** future space-borne gravitational wave observatory network,such as the LISA-Taiji network,will be able to measure the gravitational wave signals in the millihertz bands with unprecedented *** including several statistical and instrumental noises,we show that,within a five-year operation time,the LISA-Taiji network is able to constrain the Hubble parameter within 1% accuracy,and possibly beats the scatters down to 0.5% or even better.

关键词： gravitational waves Hubble parameter super massive black hole

Measurement of R Line Fluorescence in Ruby Using the Diamond Anvil Cell at Low Temperature

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Chinese Physics Letters 2000年第8期17卷 555-557页

作者： XU Li-wen CHE rong-Zheng JIN Chang-qing Institute of Physics and Center for Condensed Matter Chinese Academy of SciencesBeijing 100080

Using our custom-built high-pressure cryostat we have performed the measurements of the R line fluorescence of ruby in the diamond anvil cell from room temperature down to *** maximum pressure was 11.1 *** computer curve fitting,different equations have been found for functions of wavenumber versus temperature between ambient pressure and 2.7 *** changes of the shape and linewidth of R lines were observed.

关键词： Diamond Fluorescence ambient