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中国医疗器械信息 2024年第15期30卷 4-6,29页

作者：张维钰申晓龙陕西省药品和疫苗检查中心陕西西安710065

通过对2023年陕西省二类医疗器械产品注册申报数量、各类型分布及检查中出现的条款进行汇总,了解企业常出现的问题,引起企业及监管机构的重视,促进陕西省医疗器械企业高质量发展。

关键词：陕西省医疗器械缺陷项

Adsorbed and free gas occurrence characteristics and controlling factors of deep shales in the southern Sichuan Basin,China

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Petroleum Science 2023年第3期20卷 1301-1311页

作者： Shang-Wen Zhou Dong-xiao zhang Department of Energy and Resources Engineering College of EngineeringPeking UniversityBejing100871China PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhenGuangdong 518055China

Deep shale gas(3500-4500 m)will be the important succeeding field for the growth of shale gas production in *** the condition of high temperature and high pressure in deep shale gas reservoirs,its gas occurrence characteristics are markedly different from those of medium and shallow *** elucidate the gas occurrence characteristics and controlling factors of deep shales in the Wufeng-Longmaxi Formation,methane adsorption,low-temperature N2,and cO2 adsorption experi-ments were *** results show that in deep shales,the mesopores provide approximately 75%of the total specific surface area(SA)and 90%of the total pore volume(PV).Based on two hypotheses and comparing the theoretical and actual adsorption capacity,it is speculated that methane is adsorbed in deep shale in the form of micropore filling,and free gas is mainly stored in the *** analysis demonstrated that ToC is the key material constraint for the adsorption capacity of deep shale,and micropore SSA is the key spatial *** minerals and mesopore parameters have limited effect on the amount of adsorbed ***,the free gas content ranges from 2.72 m^(3)/t to 6.20 m^(3)/t,with an average value of 4.60 m^(3)/t,and the free gas content ratio is approximately 58%,suggesting that the deep shale gas reservoirs are dominated by free *** ratio may also increase to approximately 70%when considering the formation temperature effect on adsorbed *** density,porosity,and gas saturation are the main controlling factors of free gas content,resulting in significantly larger free gas content in deep shale than in shallower formations.

关键词： Adsorbedgas Free gas Gas occurrence characteristics Deep shale

Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study

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Water Science and Engineering 2015年第2期8卷 127-131页

作者： Xiu-feng zhang Xue-ying mei Department of Ecology and Institute of Hydrobiology Jinan University College of Resources and Environment Anhui Agricultural University

To evaluate the effect of benthic algae on soluble reactive phosphorus（SRP） release from sediments in shallow lakes, experiments on SRP release with and without benthic algae in sediment cores and an experiment on SRP uptake by benthic algae were conducted using the radioisotope（32P） tracing method. The dissolved oxygen（DO） concentration in sediment cores was also investigated. The results show that benthic algae effectively reduce the release of SRP from sediments to overlying water. The uptake of SRP by benthic algae, which is the direct way in which benthic algae affect the SRP release from sediments, is low in filtered water and increases with the SRP concentration. However, in the experiment, the increased uptake rate lasted for a short time（in one hour）, and after that it returned to a low rate. Benthic algae make the DO concentration and the oxic layer thickness increased, which can indirectly reduce the SRP release from sediments. These findings indicate that benthic algae can reduce the SRP release from sediments in both direct and indirect ways. It seems that the indirect way also plays an important role in reducing the SRP release from sediments.

关键词： Sediment Benthic algae Soluble reactive phosphorus release Soluble reactive phosphorus uptake Shallow lake

Bake hardening behavior of TRIP and DP steels

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Journal of University of Science and Technology Beijing 2008年第2期15卷 132-137页

作者： Jicheng zhang Renyu Fu mei zhang Rendong Liu Xicheng Wei Lin Li School of Materials Science and Engineering Shanghai University Shanghai 200072 China Shanghai Huizhong Automotive Manufacturing Co. Ltd. Shanghai 200122 China Ansteel Group Co. Anshan 114021 China

The bake hardening （BH） behavior of transformation-induced plasticity （TRIP） and dual-phase （DP） steels after different prestrains was studied. The experimental results indicate that TRIP steel exhibits good BH ability while DP steel does not, and prestrain displays a strong effect on the BH values of both steels. The comparison of microstructures of the two steels showed that the hard second phase in the matrix might be harmful to the BH ability. For deformed specimens, baking resulted in a loss of uniform elongation, but there was no obvious decrease in uniform elongation for unprestrained specimens.

关键词： TRIP steel DP steel baking hardening (BH) value prestrain uniform elongation

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FPSO锚桩海上安装作业流程的优化

天津科技 2024年第4期51卷 87-89页

作者：陈晓张宝雷中海油能源发展股份有限公司采油服务分公司天津300452

阐述浮式生产储卸油装置(FPSO)单点系泊系统锚桩的海上安装程序,通过优化作业步骤、改进作业工具等,统筹兼顾,提高锚桩海上施工效率,为今后类似锚桩海上安装作业流程的优化提供借鉴。

关键词：浮式生产储卸油装置(FPSO) 系泊锚桩海上安装

基孔肯雅病毒(CHIKV)重组痘苗病毒候选疫苗小鼠免疫研究

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中国病原生物学杂志 2024年第4期19卷 378-381页

作者：张金鑫肖妍李菁菁韩晶金宁一李霄韩继成长春中医药大学科研处院士工作室吉林长春130122 长春理工大学生命科学技术学院中国农业科学院长春兽医研究所

目的基孔肯雅病毒(Chikungunya virus,CHIKV)是甲病毒属的正股RNA病毒,主要由埃及伊蚊和白纹伊蚊传播,广泛流行于亚洲和非洲的部分地区,每年给全球造成严重的经济损失。本研究基于重组痘苗表达系统构建了CHIKV重组痘苗候选疫苗,进行小... 详细信息

目的基孔肯雅病毒(Chikungunya virus,CHIKV)是甲病毒属的正股RNA病毒,主要由埃及伊蚊和白纹伊蚊传播,广泛流行于亚洲和非洲的部分地区,每年给全球造成严重的经济损失。本研究基于重组痘苗表达系统构建了CHIKV重组痘苗候选疫苗,进行小鼠免疫评价,为CHIKV疫苗的研发提供理论基础。方法将CHIKV重组痘苗候选疫苗进行小鼠免疫评价,在首次免疫35 d后,收集血清用于特异性抗体检测以及细胞因子检测,分离小鼠脾脏淋巴细胞用于T细胞亚类分型分析,并在35 d时进行攻毒保护实验。结果免疫CHIKV重组痘苗候选疫苗小鼠特异性抗体显著升高,且细胞因子IL-4(P<0.05)和IFN-γ(P<0.05)的表达量显著高于对照组。CD3^(+)CD4^(+)T(P<0.05)和CD3^(+)CD8^(+)T(P<0.05)细胞比例显著高于对照组。攻毒保护实验结果显示,免疫疫苗组体重高于对照组。结论本研究中的CHIKV重组痘苗病毒候选疫苗可以诱导机体产生良好的细胞免疫和体液免疫应答反应,本研究结果可为CHIKV疫苗的研发提供参考。

关键词：基孔肯雅病毒重组痘苗病毒细胞免疫体液免疫

SIMULATION OF HYDRAULIC TRANSIENTS IN HYDROPOWER SYSTEMS USING THE 1-D-3-D COUPLING APPROACH

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Journal of Hydrodynamics 2012年第4期24卷 595-604页

作者： zhang xiao-xi CHENG Yong-guang State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China

Although the hydraulic transients in pipe systems are usually simulated by using a one-dimensional （l-D） approach, local three-dimensional （3-D） simulations are necessary because of obvious 3-D flow features in some local regions of the hydropower systems. This paper combines the 1-D method with a 3-D fluid flow model to simulate the Multi-Dimensional （MD） hydraulic transients in hydropower systems and proposes two methods for modeling the compressible water with the correct wave speed, and two strategies for efficiently coupling the 1-D and 3-D computational domains. The methods are validated by simulating the water hammer waves and the oscillations of the water level in a surge tank, and comparing the results ~with the 1-D solution data. An MD study is conducted for the transient flows in a realistic water conveying system that consists of a draft tube, a tailrace surge tank and a tailrace tunnel. It is shown that the 1-D-3-D coupling approach is an efficient and promising way to simulate the hydraulic transients in the hydropower systems in which the interactions between 1-D hydraulic fluctuations of the pipeline systems and the local 3-D flow patterns should be considered.

关键词： hydropower station hydraulic transients compressible water model coupling of 1-D and 3-D methods

Identification of QTLs for yield and yield components of barley under different growth conditions

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第3期11卷 169-176页

作者： Da-wei XUE mei-xue ZHOU xiao-qin zhang Song CHEN Kang WEI Fan-rong ZENG Ying MAO Fei-bo WU Guo-ping zhang College of Life and Environment Sciences Hangzhou Normal University Hangzhou 310036 China Department of Agronomy Zhejiang University Hangzhou 310029 China Tasmanian Institute of Agricultural Research University of Tasmania Kings Meadows TAS 7249 Australia

Waterlogging is a major abiotic stress limiting barley (Hordeum vulgare L.) yield and its stability in areas with excessive *** of genomic regions influencing the response of yield and its components to waterlogging stress will enhance our understanding of the genetics of waterlogging tolerance and the development of more tolerant barley *** trait loci (QTLs) for grain yield and its components were identified using 156 doubled haploid (DH) lines derived from a cross between the cultivars Yerong (waterlogging-tolerant) and Franklin (waterlogging-sensitive) grown under different conditions (waterlogged and well drained).A total of 31 QTLs were identified for the measured characters from two experiments with two growth *** phenotypic variation explained by individual QTLs ranged from 4.74% to 55.34%.Several major QTLs determining kernel weight (KW),grains per spike (GS),spikes per plant (SP),spike length (SL) and grain yield (GY) were detected on the same region of chromosome 2H,indicating close linkage or pleiotropy of the gene(s) controlling these *** different QTLs were identified under waterlogging conditions,and thus different markers may have to be used in selecting cultivars suitable for high rainfall areas.

关键词： Barley (Hordeum vulgare L.) Waterlogging tolerance Yield Quantitative trait locus (QTL)

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高速公路工程造价上涨原因分析

山东交通科技 2024年第1期 152-155页

作者：宁潇张含飞山东省交通规划设计院集团有限公司山东济南250101

工程造价是高速公路建设过程中普遍关注的问题,近年来高速公路工程造价呈现不断增长的趋势。结合山东省工程实例,从工程规模、工料机单价、造价编制依据及各种政策性因素等方面论证分析造价上涨的原因。

关键词：高速公路造价上涨概算编制依据

蜜环菌人工菌棒基质碳氮比对乌天麻产量及营养品质的影响

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食品安全质量检测学报 2024年第8期15卷 50-57页

作者：王丽杨天梅石瑶左应梅杨美权张金渝云南省农业科学院药用植物研究所昆明650000

目的分析蜜环菌人工菌棒基质碳氮比对乌天麻产量及基本营养成分含量的影响,并对乌天麻氨基酸品质进行评价。方法通过大棚内随机区组实验,测定不同种植模式下乌天麻的基本营养成分含量,对其进行单因素方差分析和多重比较,通过氨基酸评分... 详细信息

目的分析蜜环菌人工菌棒基质碳氮比对乌天麻产量及基本营养成分含量的影响,并对乌天麻氨基酸品质进行评价。方法通过大棚内随机区组实验,测定不同种植模式下乌天麻的基本营养成分含量,对其进行单因素方差分析和多重比较,通过氨基酸评分法对乌天麻中氨基酸营养价值进行评价。结果蜜环菌人工菌棒基质碳氮比对乌天麻的产量、基本营养成分含量及氨基酸的营养品质均有显著影响;蜜环菌人工菌棒基质碳氮比为75.94时种植的乌天麻,其各项营养指标接近对照种植的乌天麻的各项营养指标,显著大于蜜环菌人工菌棒基质碳氮比为60.69、126.39时种植的乌天麻的各项营养指标。蜜环菌人工菌棒基质碳氮比为75.94时种植的乌天麻,其必需氨基酸含量与总氨基酸含量的比值为37.03%,接近40%;必需氨基酸含量与非必需氨基酸含量的比值为58.79%,接近60%;必需氨基酸的氨基酸比值、必需氨基酸的比值系数分、必需氨基酸比值系数与联合国粮食及农业组织/世界卫生组织提出的氨基酸理想模式较接近。结论利用蜜环菌人工菌棒种植乌天麻可以获得基本营养成分含量高、氨基酸丰富、必需氨基酸的组成比例相对合理、符合人体吸收利用需求、具有较高营养价值的乌天麻。

关键词：乌天麻蜜环菌人工菌棒基本营养成分含量氨基酸营养评价