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Nedaplatin-induced syndrome of inappropriate secretion of antidiuretic hormone:A case report and review of the literature

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World Journal of Clinical Cases 2021年第23期9卷 6810-6815页

作者： Lei Tian Li-ya He Hong-Zhen Zhang Department of oncology Hebei General HospitalShijiazhuang 050051Hebei ProvinceChina

BACKGRoUND Syndrome of inappropriate secretion of antidiuretic hormone(SIADH)is relatively common in several cancers,such as small cell lung ***,nedaplatin-induced SIADH is *** describe a case of SIADH mediated by *** SUMMARY A 54-year-old female with nasopharyngeal carcinoma was treated with nedaplatin and developed severe hyponatremia due to *** side effects were successfully treated by fluid restriction and sodium *** This case report highlights the importance of cautiously treating life-threatening hyponatremia in patients treated with nedaplatin.

关键词： Nedaplatin Syndrome of inappropriate secretion of antidiuretic hormone Hyponatremia Fluid restriction Sodium supplementation Case report

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我国开展南南标准化合作的现状、问题及应对

标准科学 2024年第7期 80-83页

作者：唐妍琪王淼王若雅中国标准化研究院

近年来,全球格局重构引发国际规则重塑,标准作为国际规则的重要组成部分,日益成为各国博弈焦点。作为南南合作的积极倡导者和重要参与者,我国持续推进发展中国家标准化合作,以应对美西方国家开展的标准竞争。本文梳理了当前南南标准化... 详细信息

近年来,全球格局重构引发国际规则重塑,标准作为国际规则的重要组成部分,日益成为各国博弈焦点。作为南南合作的积极倡导者和重要参与者,我国持续推进发展中国家标准化合作,以应对美西方国家开展的标准竞争。本文梳理了当前南南标准化合作发展现状,并针对南南标准化合作面临的挑战给出对策和建议,提出促进发展中国家标准化合作的新模式和新方案。

关键词：南南合作标准化大国博弈

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夏热冬冷气候下太阳能住宅装配式设计实践

建筑技术 2024年第1期55卷 6-8页

作者：陈雅兰吴冠宇李岳岩西安建筑科技大学建筑学院西安710055

为推动我国村镇领域技术创新,建设绿色宜居村镇环境,针对夏热冬冷地区住宅的太阳能利用,从材料到构造,到建筑设计层面,完成与其配合的一体化技术设计策略研究及节能策略的应用探索。借助国际太阳能竞赛的契机,从前期设计的策略选取到后... 详细信息

为推动我国村镇领域技术创新,建设绿色宜居村镇环境,针对夏热冬冷地区住宅的太阳能利用,从材料到构造,到建筑设计层面,完成与其配合的一体化技术设计策略研究及节能策略的应用探索。借助国际太阳能竞赛的契机,从前期设计的策略选取到后期项目的完成结果,总结实践经验,对比预期和实践的差距及原因。结果表明,前期平面、结构、材料、构造等都满足了对于太阳能利用技术的一体化设计,同时考虑了自然采光、隔热、遮阳等策略的应用,以减少能量损耗,取得了相应的效果,并对未达到预期效果的原因作出评判。

关键词：夏热冬冷地区太阳能住宅装配式

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超声波相控阵测试混凝土波速试验研究

广州建筑 2024年第6期52卷 87-90页

作者：唐建平曹伟赵亚宇广州市海珠区重点工程项目建设中心广州510080 广州市市政工程试验检测有限公司广州510520

采用超声波相控阵设备检测超声波在混凝土内的传播波速,考察波速与混凝土配置强度、龄期的相关性。首先成型了配置强度为C30C40C50的多组混凝土试件,分别在龄期为4天、15天、30天时进行超声波相控阵线扫描测试。通过读取测试时各道超声... 详细信息

采用超声波相控阵设备检测超声波在混凝土内的传播波速,考察波速与混凝土配置强度、龄期的相关性。首先成型了配置强度为C30C40C50的多组混凝土试件,分别在龄期为4天、15天、30天时进行超声波相控阵线扫描测试。通过读取测试时各道超声波信号峰值延迟时间,推断超声波在混凝土中的传播波速度。测试结果表明:超声波波速在同一试件的测试结果具有良好的重复性,揭示干接触超声波探头具有良好的工作性能;超声波频率在20-60 kHz以内变化时,混凝土超声波波速变化小于1%;不同龄期、不同配置强度的混凝土波速有明显差异,显示超声波相控阵波速能够区分混凝土强度特征。现场对某预制构件表面进行混凝土波速度测试,发现的低波速区域经验证存在混凝土质量缺陷。

关键词：混凝土超声波相控阵波速度混凝土强度

Correlations Between Foliar Stable Carbon Isotope Composition and Environmental Factors in Desert Plant Reaumuria soongorica （Pall.） Maxim.

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Journal of Integrative Plant Biology 2005年第9期47卷 1065-1073页

作者： Jian-Ying MA Tuo CHEN Wei-ya QIANG Gang WANG School of Life Sciences Lanzhou University Lanzhou 730000 China Cold and Arid Environmental and Engineering Research Institute the Chinese Academy of Sciences Lanzhou 730000 China

Leaves of 407 individuals of Reaumuria soongorica （Pall.） Maxim. collected from the major distribution areas were measured to investigate the distribution characteristics of the stable carbon isotope in this desert plant, as well as correlations between δ^13C values and environmental factors. Results showed that δ^13C values in R. soongorica ranged from -22.77‰ to -29.85‰ and that the mean δ^13C value （-26.52‰） was higher than a previously reported δ^13C value for a different desert ecosystem. This indicates that R. soongorica belongs to the C3 photosynthetic pathway and has higher water use efficiency than other species. The correlations between δ^13C values and environmental factors demonstrated that the foliar δ^13C values in R. soongorica increased significantly with decreasing mean annual precipitation and mean relative humidity, and decreased with decreasing duration of sunshine and evaporation. The spatial distribution trend of δ^13C values in R. soongorica was not obvious and there was no significant correlation between the δ^13C values and mean annual temperature. We conclude that different distribution trends in δ^13C values for R. soongorica were likely caused by stomatal limitation rather than by nutrient-related changes in photosynthetic efficiency and that precipitation played an important role in the wide distribution range of R. soongorica. This pattern of δ^13C values for R. soongorica reinforced that it is a super-xerophil in terms of its adaptive strategies to a desert environment.

关键词： carbon isotope composition desert plant meteorological factor Reaumuria soongorica.

Diurnal Variation in Relative Photosynthetic Performance of Marestail (Hippuris vulgaris Linn.) Across a Water Temperature Gradient using PAM Fluorometry in Jiuzhaigou National Nature Reserve,Sichuan Province,China

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Journal of Mountain Science 2011年第6期8卷 794-807页

作者： GAo Linan TANG ya Carla BoSSARD WANG yan HAN Zhiguo Department of Environment College of Architecture and Environment Sichuan University Chengdu 610065 China Department of Biology Saint Mary＇s College of California Moraga California 94575 USA Jiuzhaigou Administrative Bureau Zhangzha Town Jiuzhaigou County Siehuan 623400 China Zealquest Laboratory Zealquest Scientific Technology Co. Ltd. Shanghai 200333 China

This paper reports the first photosynthetic study of marestail in Jiuzhaigou. In this work, we used PAM fluorometry to examine photosynthetic rates of submerged and emerged marestail in three lakes. Three lakes were studied across a gradient of water temperature, with low water temperature conditions in Grass Lake and Arrow Bamboo Lake, and higher water temperature in Five Colored Lake. In the field, electron transport rates （ETRmax） were measured as rapid light curves （RLCs） by in situ yield measurements. Submerged and emerged marestail showed higher photosynthetic activity in Five Colored Lake compared to the other lakes, a response consistent with the adaptation of marestail in Five Colored Lake to high water temperature. The optimal temperature for photosynthesis of submerged marestail in Jiuzhaigou was about 12 ~C. Non- photochemical quenching （NPQ） of submerged and emerged marestail increased with increasing water temperature. Maximum quantum yield （Fv/Fm） of submerged marestail in Five Colored Lake showed full recovery at 170o h due to higher NPQ. Further, the chlorophyll a for submerged marestail was the highestin Grass Lake and the lowest in Five Colored Lake. These results indicate that in different lakes the function of these aquatic plants is associated with a diversity of place-dependent environmental conditions, especially water temperature that leads to pronounced differences in the plant＇s ecophysiological reactions.

关键词： Water Temperature Photosynthetic Chlorophyll Marestail

CALCULATIoN oF VISCoUS FLoW ARoUND CIRCULAR CYLINDER WITH THREE-DIMENSIoNAL NUMERICAL SIMULATIoN

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Journal of Hydrodynamics 2001年第4期13卷 83-87页

作者： Wang, ya-Ling Liu, Ying-Zhong Mia, Guo-Ping Shanghai Jiaotong Univ. Shanghai 200030 China

Three-dimensional numerical simulation of a uniform incompressible viscous flow around a stationary circular cylinder was conducted. The CFX-4 software was used to calculate the hydrodynamic characteristics of the flow and the finite volume method for incompressible Navier-Stokes equations was employed in the program. The simulation of the flow was performed for Re=1013 and RE=104 respectively within the sub-critical region. In order to overcome numerical instability for the high Reynolds number flows, a quadratic upwind scheme was incorporated for the Navier-stokes equations. The periodicity boundary condition was used at the ends of the cylinder. It was found that the evolution of the lift and drag coefficients in each plane along the cylinder span is different. Comparison between the predicted results based on the three-dimensional and the two-dimensional analysis was also given. It is concluded that at high Reynolds number the effect of three-dimensionality of the flow around the circular cylinder is remarkable, and in addition hydrodynamic coefficients with of 3-D simulation are less than those given by 2-D simulation.

关键词： Computer simulation Incompressible flow Mathematical models Navier Stokes equations Reynolds number

Nonlinear optimization of orthotropic Steel Deck System Based on Response Surface Methodology

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Research 2020年第1期2020卷 28-49页

作者： Wei Huang Minshan Pei Xiaodong Liu Chuang yan ya Wei Intelligent Transportation System Research Center Southeast UniversityNanjing 210096China CCCC Highway Consultants Co. Ltd.Beijing 100084China Department of Civil Engineering Tsinghua UniversityBeijing 100084China

The steel bridge deck system,directly subjected to the vehicle load,is an important component to be considered in the optimization design of the *** to its complex structure,the design parameters are coupled with each other,and many fatigue details in the system result in time-consuming calculation during structure *** view of this,a nonlinear optimization method based on the response surface methodology(RSM)is proposed in this study to simplify the design process and to reduce the amount of calculations during *** optimization design of the steel bridge deck system with two-layer pavement on the top of the steel deck plate is taken as an example,the influence of eight structural parameters is *** Box-Behnken design is used to construct a sample space in which the eight structural parameters can be distributed evenly to reduce the calculation *** finite element method is used to model the mechanical responses of the steel bridge deck *** the regression analysis by the RSM,the explicit relationships between the fatigue details and the design parameters can be obtained,based on which the nonlinear optimization design of the bridge deck system is *** influence of constraint functions,objective functions,and optimization algorithms is also *** method proposed in this study is capable of considering the influence of different structural parameters and different optimization objectives according to the actual needs,which will effectively simplify the optimization design of the steel bridge deck system.

关键词： steel fatigue system

Correlation between microstructure and tensile behavior of metal–intermetallic laminate compound with different initial Ni foil thickness

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Rare Metals 2014年第2期33卷 196-202页

作者： ya-Jie Guo Zhong-Qi Shi Yi-Ku Xu Guan-Jun Qiao Engineering Research Center of Transportation Materials of Ministry of Education School of Materials Science and Engineering Chang’an University State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and Engineering Xi’an Jiaotong University

Ni-base metal–intermetallic laminate composites were obtained from in situ reaction synthesis between Ni and Al foils by utilizing plasma activated sintering. The effects of Ni foil thickness on the microstructure and tensile properties of the composites were investigated. The results show that the phases forming during reaction synthesis are independent of the starting thickness of the Ni foils. However, thicker reacted layers are obtained in the samples fabricated from 100 lm Ni foils（Ni100） than those obtained in the samples from 50 lm Ni foils（Ni50）when treated at the same process. The tensile strength of Ni100 samples increases with the temperature increasing at the expense of ductility. Dissimilarly, Ni50 composites treated at higher temperatures exhibit enhanced strength and ductility. Both Ni50 and Ni100 laminate fracture in a similar mechanism. Cracking first occurs in the brittle intermetallic layers. These original cracks result in shear bands in Ni layers emitted from the crack tips, and thus producing local stress concentration, which initiates new cracks in adjacent intermetallic layers. The multiplication of cracks and shear bands leads to the failure of the laminates.

关键词： Laminates Layered composites Reaction synthesis Ni/Al