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Journal of Innovative Optical Health Sciences 2017年第1期10卷 84-93页

作者： Junlei zha.Fei Xiao Jian Kang Haoxin zha. yun Dai Yudong zha.g The Laboratory on A daptive Optics Institute of Optics and Electronics Chinese A cademy of Sciences Chengdu 610209 P.R.China The Key Laboratory on Adaptive Optics Chinese Academy of Sciences Chengdu 610209 P.R.China University of Chinese Academy of Sciences Beijing 100049 P.R.China

It is necessary to know the distribution of the Chinese eye's aberrations in clinical environment to guide high-resolution retinal imaging system design for large Chinese population *** collected the monochromatic wave aberration of 332 healthy eyes and 344 diseased eyes in Chinese population across a 6.0-mm *** aberration statistics of Chinese eyes including healthy eyes and diseased eyes were analyzed,and some differences of aberrations between the Chinese and European race were *** this basis,the requirement for adaptive optics(AO)correction of the Chinese eye's monochromatic aberrations was *** result showed that a stroke of 20μm and ability to correct aberrations up to the 8th Zernike order were needed for reflective wavefront correctors to achieve near difraction-limited imaging in both groups for a reference wavelength of 550 nm and a pupil diameter of *** verify the:analysis mentioned above,an A0 floodillumination system was established,and high-resolution retinal imaging in vivo was achieved for Chinese eye including both healthy and diseased eyes.

关键词： Ocular aberrations adaptive optics retinal imaging.

微塑料对砷污染土壤中微生物群落和砷形态转化的影响

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分析测试学报 2024年第8期43卷 1220-1226页

作者：徐文卿刘雨森胡敏于焕云鲍恋君暨南大学环境与气候学院广东广州511443 常州大学环境科学与工程学院江苏常州213164 广东省科学院生态环境与土壤研究所广东广州510650

微塑料广泛存在于自然环境中,并给生态系统和人类健康造成潜在的暴露风险。关于微塑料的研究多集中于水体环境,仅有较少研究报道了微塑料对土壤环境的影响。该研究讨论了两种微塑料类型(聚乙烯(PE)及聚乳酸(PLA))对砷污染的土壤微生物... 详细信息

微塑料广泛存在于自然环境中,并给生态系统和人类健康造成潜在的暴露风险。关于微塑料的研究多集中于水体环境,仅有较少研究报道了微塑料对土壤环境的影响。该研究讨论了两种微塑料类型(聚乙烯(PE)及聚乳酸(PLA))对砷污染的土壤微生物群落和砷形态转化的影响。结果表明,两种微塑料会提高土壤中微生物物种的丰度及多样性。相对于对照组,PLA微塑料使得土壤中生物有效态砷占比增加。两种微塑料在个别时间点影响土壤中砷还原基因的丰度,促进生物有效态五价砷还原为三价砷。该研究初步解释了微塑料对土壤中重金属产生的影响,为后续研究提供了科学参考。

关键词：微塑料重金属微生物土壤砷形态转化

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基于熵产分析的喷水推进泵空化特性研究

船舶力学 2024年第10期28卷 1507-1515页

作者：郭嫱费宗岳黄先北仇宝云石丽建扬州大学电气与能源动力工程学院江苏扬州225127 扬州大学水利科学与工程学院江苏扬州225127

喷水推进泵广泛应用于船舶动力等领域,其内部的空化流动特性对于推进性能具有重要影响。为了对空化流场中的能量损失进行定量评价,基于熵产理论对某轴流式喷水推进泵进行空化特性研究。由于叶顶间隙涡空化在轴流式推进泵中十分典型,数... 详细信息

喷水推进泵广泛应用于船舶动力等领域,其内部的空化流动特性对于推进性能具有重要影响。为了对空化流场中的能量损失进行定量评价,基于熵产理论对某轴流式喷水推进泵进行空化特性研究。由于叶顶间隙涡空化在轴流式推进泵中十分典型,数值方法中考虑局部涡流特性,采用旋转修正的SST-CC湍流模型和基于涡识别修正的空化模型,并根据模型泵的参考实验验证数值计算方法。研究结果表明:在不同空化系数条件下,随着空化程度的加剧,熵产值的增大反映了推进泵能量损失的增大,对应效率曲线的下降,泵内总熵产的变化规律与其功率特性基本一致。分析推进泵各段几何区域的能量损失可见,叶轮段的熵产占比最高,尤以湍流耗散和壁面耗散更为显著,这与叶轮叶顶间隙的涡流和空化流场密切相关。研究叶轮叶顶的流动特征可见,在不同空化条件下,叶顶间隙泄漏涡区域引发了旋涡空化,但显著的能量耗散出现在泄漏涡的外缘及附近壁面区域,而叶片表面的附着空化涡则是湍流耗散的主要来源。

关键词：喷水推进泵熵产理论空化间隙数值模拟

基于RNA-Seq技术筛选姜曲海猪子宫和卵巢发育相关基因

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江苏农业学报 2024年第1期40卷 130-140页

作者：朱淑斌徐盼周春宝许琴瑟吴嘉韵江苏农牧科技职业学院江苏泰州225300 姜曲海猪保种场江苏泰州225300

母猪的子宫和卵巢组织发育情况直接影响母猪的繁殖性能,进而对养猪业的经济效益造成重大影响。为探究姜曲海猪子宫和卵巢发育的分子机理,本研究选取1月龄和8月龄姜曲海猪各3头,利用转录组测序技术(RNA-Seq)对子宫和卵巢组织进行测序,通... 详细信息

母猪的子宫和卵巢组织发育情况直接影响母猪的繁殖性能,进而对养猪业的经济效益造成重大影响。为探究姜曲海猪子宫和卵巢发育的分子机理,本研究选取1月龄和8月龄姜曲海猪各3头,利用转录组测序技术(RNA-Seq)对子宫和卵巢组织进行测序,通过生物信息学手段筛选差异表达基因并进行基因本体(Gene ontology,GO)和京都基因和基因组百科全书(Kyoto ncyclopedia of genes and genomes,KEGG)富集分析,再与猪数量性状基因座(Quantitative trait locus,QTL)数据库比对后鉴定出重要的候选基因。结果显示,1月龄和8月龄姜曲海猪子宫组织中有1688个差异表达基因,表达上调和下调的基因各844个;卵巢组织中存在3833个差异表达基因,其中2831个表达上调,1002个表达下调。富集分析结果显示这些差异表达基因主要显著富集于动物器官发育、组织发育和细胞分化等生物学过程。本研究在子宫和卵巢组织中分别筛选出11个和31个与发育性状有关的候选基因,其中共有的候选基因有6个,分别为LHFPL1、MTUS2、LIF、RBP4、EPHB2和TESC。本研究结果为姜曲海猪子宫和卵巢发育分子层面的研究提供了参考,也为今后姜曲海猪繁殖性状的分子改良提供了新的研究方向。

关键词：姜曲海猪子宫卵巢转录组测序

藤菔降压片治疗1级高血压病肝阳上亢证随机对照试验

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中国中西医结合杂志 2024年第7期44卷 778-784页

作者：朱羽硕王宇陈保增张新元李运伦山东中医药大学附属医院急诊、重症医学科济南250014 山东第一医科大学附属聊城市第二人民医院心内科山东252600 泰安市中医医院急诊科山东271000 山东中医药大学附属医院心病三科济南250014 山东省心血管病中医精准治疗工程实验室济南250355

目的评价藤菔降压片治疗1级高血压病肝阳上亢证患者的疗效和安全性。方法采用随机、单盲、安慰剂平行对照的方法,纳入1级高血压病肝阳上亢证患者130例,随机分为对照组65例,试验组65例。试验组予生活方式指导加藤菔降压片每日2次(1.5 g... 详细信息

目的评价藤菔降压片治疗1级高血压病肝阳上亢证患者的疗效和安全性。方法采用随机、单盲、安慰剂平行对照的方法,纳入1级高血压病肝阳上亢证患者130例,随机分为对照组65例,试验组65例。试验组予生活方式指导加藤菔降压片每日2次(1.5 g/次),对照组予生活方式指导加藤菔降压片安慰剂每日2次(1.5 g/次),共治疗4周。比较两组治疗前后主要疗效指标(中医证候积分、血压和血压达标率)及次要疗效指标(血脂、尿酸、花生四烯酸、血栓素B2、前列腺素E2以及尿微量白蛋白);进行安全性及依从性分析。结果共129例患者完成试验,其中对照组65例,试验组64例。治疗组血压达标率优于对照组[65.63%(42/64)vs.43.08%(28/65),χ^(2)=6.606,P0.05)。结论藤菔降压片治疗1级高血压病肝阳上亢证安全、有效。(中国临床试验注册中心,***-IIR-17011940)。

关键词：藤附降压片 1级高血压病肝阳上亢证随机对照试验中药复方

Influence of correlation scale errors on aquifer hydraulic conductivity inversion precision

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Water Science and Engineering 2020年第3期13卷 243-252页

作者： yun-xiao Mu Lei Zhu Tong-qing Shen Meng zha.g Yuan-yuan zha School of Civil Engineering and Water Conservancy Ningxia UniversityYinchuan 750021China Engineering Research Center for Efficient Utilization of Modern Agricultural Water Resources in Arid Regions Ministry of EducationYinchuan 750021China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China

In order to investigate the influence of correlation scale error on the inversion precision of the hydraulic conductivity of the aquifer,the successive linear estimator(SLE)was used to invert the hydraulic conductivity field of a heterogeneous aquifer based on synthetic *** increasing the numbers of observation wells and pumping tests,we analyzed the difference between the estimated and true values of hydraulic conductivity with different correlation scale *** relationships between the observation well number and the error in inversion results,and between the pumping test number and the error in inversion results were *** results show that,if the amount of observed head data is insufficient,there will be errors in inversion results with changing correlation *** to the existence of correlation scale error,the improvement of inversion precision gradually slows down with the increase of the amount of observed head data,which indicates that too much observed head data causes data ***,for the synthetic experiments described in this paper,the observation well number should be less than 41,the pumping test number should be less than 17,and a more suitable method should be selected according to the precision requirements of specific situations in practical engineering.

关键词： Hydraulic conductivity Parameter inversion Successive linear estimator Correlation scale error Observation well number Pumping test number

不同浮动覆盖条件下水面蒸发消减效果及节水效益研究

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中国农村水利水电 2024年第5期 23-30,40页

作者：王永平周志轩鲍子云蒋佳莉宁夏回族自治区水利科学研究院宁夏银川750021

为探究不同浮动覆盖条件下水面蒸发消减效果及节水效益,以PE瓶、HDPE球、塑膜板为供试材料,设置3种不同水面覆盖率,在宁夏中部干旱带开展连续2个年度非冰期大型蒸发池试验,对比分析不同覆盖材料和覆盖率的蒸发消率、水面温度、水质变化... 详细信息

为探究不同浮动覆盖条件下水面蒸发消减效果及节水效益,以PE瓶、HDPE球、塑膜板为供试材料,设置3种不同水面覆盖率,在宁夏中部干旱带开展连续2个年度非冰期大型蒸发池试验,对比分析不同覆盖材料和覆盖率的蒸发消率、水面温度、水质变化、节水成本及效益。结果表明:覆盖材料的蒸发消减率4-6月呈趋于升高,7-10月趋于降低;同等条件下HDPE球3种覆盖率的非冰期蒸发消减率分别为42.14%、56.56%、70.15%,明显高于PE瓶和塑膜板;随着材料覆盖率增加,水体升温较为明显,且塑膜板对水温影响最大,HDPE球次之,PE瓶最小;覆盖水体中未发现毒害物质,水质稳定趋好;相同覆盖率下,HDPE球节水成本最低,塑膜板最高,相同覆盖材料下,50%覆盖率的最低,75%覆盖率的最高;3种材料消减水面蒸发直接效益均为负值,但考虑间接效益的情况下,采用HDPE球覆盖1万m^(2)的水面,寿命期50%、75%、90%覆盖率可分别实现25.94万元、27.41万元、36.60万元的正收益。综合节水效果、节水成本和效益,HDPE球是可供干旱地区选用的消减水面蒸发节水材料。

关键词：浮动覆盖不同覆盖条件蒸发消减节水效果水温水质成本及效益西北干旱区

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Theoretical calculation of equilibrium Mg isotope fractionation between silicate melt and its vapor

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Acta Geochimica 2018年第5期37卷 655-662页

作者： Haiyang Luo Huiming bao Yuhong Yang yun Liu State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of SciencesGuiyang 550081 China University of Chinese Academy of Sciences Beijing 100049China Department of Geology and Geophysics Louisiana StateUniversity Baton Rouge LA 70803 USA Center for Lunar and Planetary Sciences Institute of Geochemistry Chinese Academy of SciencesGuiyang 550081 China

Isotope fractionation during the evaporation of silicate melt and condensation of vapor has been widely used to explain various isotope signals observed in lunar soils, cosmic spherules, calcium-aluminum-rich inclu- sions, and bulk compositions of planetary materials. During evaporation and condensation, the equilibrium isotope fractionation factor （α） between high-temperature silicate melt and vapor is a fundamental parameter that can con- strain the melt＇s isotopic compositions. However, equilib- rium a is difficult to calibrate experimentally. Here we used Mg as an example and calculated equilibrium Mg isotope fractionation in MgSiO3 and Mg2SiO4 melt-vapor systems based on first-principles molecular dynamics and the high- temperature approximation of the Bigeleisen-Mayer equation. We found that, at 2500 K, 625Mg values in the MgSiO3 and Mg2SiO4 melts were 0.141 ±0.004 and 0.143 ±0.003‰ more positive than in their respective vapors. The corresponding 626Mg values were 0.270 ± 0.008 and 0.274 ± 0.006‰ more positive than in vapors, respectively. The general α - T equations describing the equilibrium Mg α in MgSiO3 and Mg2SiO4 melt-vapor systems were： αMg（l）-Mg（g） = 1 ＋ 5.264×10^5/T^2 （1/m - 1/m＇） and αmg（l）-Mg（g） = 1 ＋ 5.340×10^5/T^2 （1/m - 1/m＇）, respectively, Where m is the mass of light isotope, ^25Mg or ^26Mg. These results offer a necessary parameter for mechanistic under- standing of Mg isotope fractionation during evaporation and condensation that commonly occurs during the early stages of planetary formation and evolution.

关键词： Equilibrium Mg isotope fractionation Forceconstant Structural optimization RPFR

Effect of tempering temperature on strain hardening exponent and flow stress curve of 1000MPa grade steel for construction machinery

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Journal of Iron and Steel Research International 2017年第9期24卷 950-956页

作者： Yang yun Qing-wu Cai bao-sheng Xie Shuang Li National Engineering Research Center of Advanced Rolling University of Science and Technology BeijingBeijing 100083China Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China

To study the effect of tempering temperature on strain hardening exponent and flow stress curve,one kind of 1000 MPa grade low carbon bainitic steel for construction machinery was designed,and the standard uniaxial tensile tests were conducted at room temperature.A new flow stress model,which could predict the flow behavior of the tested steels at different tempering temperatures more efficiently,was *** relationship between mobile dislocation density and strain hardening exponent was discussed based on the dislocation-stress *** equation and an inverse proportional function were adopted to describe the mobile dislocation,and two mathematical models were established to describe the relationship between tempering temperature and strain hardening *** regression analysis was applied to the Arrhenius type model,hence,the activation energy was determined to be 37.6kJ/***,the square of correlation coefficient was 0.985,which indicated a high reliability between the fitted curve and experimental *** comparison with the Arrhenius type curve,the general trend of the inverse proportional fitting curve was coincided with the experimental data points except of some fitting ***,the Arrhenius type model can be adopted to predict the strain hardening exponent at different tempering temperatures.

关键词： Tempering temperature Flow stress curve Strain hardening exponent Microscopic mechanism Mathematical model

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佳木斯市肠炎沙门菌的耐药特征及同源性分析

中国食品卫生杂志 2024年第3期36卷 314-319页

作者：付宇吴晓敏赵婧孟庆敏孟敏芝王彬郝芸包名家佳木斯市疾病预防控制中心黑龙江佳木斯154007 佳木斯大学附属第一医院黑龙江佳木斯154007 佳木斯大学公共卫生学院黑龙江佳木斯154007

目的了解佳木斯市优势血清型肠炎沙门菌的耐药状况及进化关系,为临床治疗提供科学依据。方法对来自食品和腹泻患者的沙门菌进行血清学分型,采用微量肉汤稀释法对分离的肠炎沙门菌进行16种抗生素药敏试验,脉冲场凝胶电泳分析菌株之间的... 详细信息

目的了解佳木斯市优势血清型肠炎沙门菌的耐药状况及进化关系,为临床治疗提供科学依据。方法对来自食品和腹泻患者的沙门菌进行血清学分型,采用微量肉汤稀释法对分离的肠炎沙门菌进行16种抗生素药敏试验,脉冲场凝胶电泳分析菌株之间的进化关系。结果在108株沙门菌中,检出肠炎沙门菌55株(50.93%);49株肠炎沙门菌有耐药性,耐药率为89.09%,其中33株菌(67.35%)为多重耐药,对抗生素萘啶酸和氨苄西林的耐药率较高,分别为81.82%和60.00%;55株肠炎沙门菌同源性为37%~100%。结论佳木斯地区肠炎沙门菌多重耐药率高,菌株之间亲缘关系和耐药性存在密切关联性,来自食品和腹泻患者的肠炎沙门菌有交叉感染现象,依据本地区肠炎沙门菌耐药特征,制定有针对性诊疗方案和预防控制措施,对保障公共卫生健康发展具有重要意义。

关键词：肠炎沙门菌耐药性同源性进化