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Evaluation of CMIP6 for historical temperature and precipitation over the tibetan Plateau and its comparison with CMIP5

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Advances in Climate Change Research 2020年第3期11卷 239-251页

作者： ZHU yu-Yao YANG Saini State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing100875China Key Laboratory of Environmental Change and Natural Disaster Ministry of EducationBeijing100875China Faculty of Geographical Science Academy of Disaster Reduction and Emergency ManagementBeijing Normal UniversityBeijing100875China

A model-by-model analysis for historical simulations was necessary for identifying reasonably performing models in the updated Coupled Model Intercomparison Project(CMIP6)over the tibetan *** determine whether the capacity of the CMIP6 models in simulating temperature and precipitation over the Plateau has been enhanced,we compared the outputs of 23 CMIP6 models with an observational dataset(CN05.1)for the period 1961–*** results suggest the systematic model biases(cold bias and wet bias)in the tibetan Plateau still exist in *** models in CMIP6 realistically simulated the surface temperature and spatial distribution of precipitation,with a pattern correlation exceeding *** bias in the mean surface temperature of the multi-model ensemble(MME)simulation was 1.08℃ lower than the observational data,which had been decreased compared with the cold bias of CMIP5(1.52℃).At the seasonal scale,most models exhibited a warm temperature bias in summer and a cold bias in *** CMIP6 MME displayed a higher reproducibility of the precipitation amplitude over dry regions compared with CMIP5 and a lower ability over wet regions.

关键词： CMIP6 GCMs temperature Precipitation tibetan Plateau Climate change

Metal affinities in single and multiple ion adsorption reaction at sulfide mineral surfaces

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Journal of Environmental Sciences 1989年第1期1卷 15-30页

作者： George W.Bailey Alan t.Lynch Environmental Research Laboratory Office of Research and Development U.S. EPA Athens Georgia 30613 U.S.A.Technology Applications Inc. Athens Georgia 30613 U.S.A.

Sulfide minerals are found in porous media in both aerobic and anaerobic environments, they should have a high affinities for certain metals. the relative binding affinities and reaction processes for 10 metal/metalloid ions reacting with four sulfide mineral surfaces has been *** order of reactivity is chalcocite > pyrite > galena >> sphalerite. For any particular metal and mineral, the greater reactivity occurs in the single-ion metal system except Ag(I) on pyrite and Cu(II) on *** precipitation and adsorption reaction can decrease metal ion mobility on porous media, the order of metal mobility in the presence of the four sulfide minerals is predicted to be: Zn(II), Cd(II) and Ni(II) - mobile; Cu(II), Pb(II), Fe(III), As(III) and Cr(III) - variable mobility and Ag(I) - ***1 predictions on metal phase distribution / partitioning compared quite well with those observed experimentally. Solubility product considerations, intrinsic acidity constant of the mineral, EH, pH and the carbonate equilibrium are major factors controlling the phase distribution of metals reacting singularly or in combination with sulfide mineral surfaces.

关键词： metal affinities sulfide mineral adsorption MINtEQA1 model reduction.

Burning surface formation mechanism of laser-controlled 5-aminotetrazole propellant

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Defence technology（防务技术） 2023年第7期25卷 48-59页

作者： Nian-bai He Rui-qi Shen Luigi t.DeLuca Li-zhi Wu Wei Zhang Ying-hua Ye yue-ting Wang School of Chemical Engineering Nanjing University of Science and Technology210094JiangsuChina Institute of Space Propulsion Nanjing University of Science and Technology210094JiangsuChina Sichuan Huachuan Industries Corporation 610106SichuanChina Space Propulsion Laboratory(Ret) Department of Aerospace Science and TechnologyPolitecnico di Milano20156MilanItaly

As an innovative propulsion technique, combustion mechanism of laser-augmented chemical propulsion has still to be ascertained. Benefiting from high nitrogen content and thermal stability, 5-aminotetrazole is a suitable ingredient for LACP. Under a flowing nitrogen environment, two kinds of unique burning surfaces were observed to occur for 5-AtZ, used as a single reacting propellant ingredient with the addition of carbon, under laser ablation. Both surfaces are hollow structures and differ by the possible presence of edges. Using micro computed tomography, the 3D perspective structures of both surfaces were revealed. Resorting to various characterization methods, a unified formation mechanism for both surfaces is proposed. this mechanism specifically applies to laser ablation, but could be crucial to common burning mechanisms in LACP.

关键词： 5-Aminotetrazole(5-AtZ) Laser-augmented chemical propulsion (LACP) Combustion mechanism Burning surface Micro computed tomography(MicroCt)

Comparison of p38 MapK, soluble endoglin and endothelin-1 level in severe preeclampsia and HELLP syndrome patients

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Asian pacific Journal of Reproduction 2019年第2期8卷 83-87页

作者： Efendi Lukas Maisuri t Chalid Upik A Miskad Syakib Bakri Department of Obstetrics and Gynecology Faculty of MedicineHasanuddin University of MakassarIndonesia Department of Phatology Faculty of MedicineHasanuddin University of MakassarIndonesia Departement of Internal Medicine Faculty of MedicineHasanuddin University of MakassarIndonesia

Objective: to compare the levels of p38 mitogen-activated protein kinase (MapK), soluble endoglin and endothelin-1 in the serum of patients with severe preeclampsia, hemolysis, elevated liver enzymes, and low platelets (HELLP) syndrome and normal pregnancies. Methods: this study was an observational analytic cross-sectional study performed at Wahidin Sudirohusodo Hospital, Makassar, Indonesia, in the period of 5th February 2016 to 20th January 2017. P38 MapK, soluble endoglin and endothelin-1 levels of patients with normal pregnancies, severe preeclampsia and HELLP syndrome were measured by enzyme-linked immunoabsorbentassay technique, using kits of human soluble endoglin, endothelin-1 and p38 MapK, Quantikine immunoassay: R&D System Inc. Results: Level of serum p38 MapK in HELLP syndrome group was higher than in severe preeclampsia and normal pregnancy groups. Soluble endoglin and endothelin-1 levels in pregnancies with severe preeclampsia and HELLP syndrome were higher than normal pregnancy but there was no significant difference between these two groups (P>0.05). Levels of p38 MapK, soluble endoglin and endothelin-1 also had a positive linear correlation with systolic and diastolic blood pressures (PapK in serum may be a marker for evidence of the severe hypoxia and its application may be considered for the diagnosis of HELLP syndrome.

关键词： Preeclampsia HELLP syndrome p38 MapK Soluble endoglin Endothelin-1

A Computational Model for two-stage 4K-Pulse tube Cooler: Part I. theoretical Model and Numerical Method

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Journal of thermal Science 2001年第4期10卷 342-347页

作者： Y.L.Ju A.t.A.M.deWaele CryogenicLaboratory ChineseAcademyofSciencesP.O.Box2711Beijing100080China DepartmentofappliedPhysi

A new mixed Eulerian-Lagrangian computational model for simulating and visualizing the internal processes and the variations of dynamic parameters of a two-stage pulse tube cooler (PtC) operating at 4 K-temperature region has been developed. We use the Lagrangian method, a set of moving grids, to follow the exact tracks of gas particles as they move with pressure oscillation in the pulse tube to avoid any numerical false diffusion. the Eulerian approach, a set of fixed computational grids, is used to simulate the variations of dynamic parameters in the regenerator. A variety of physical factors, such as real thermal properties of helium, multi-layered magnetic regenerative materials, pressure drop and heat transfer in the regenerator, and heat exchangers, are taken into account in this model. the present modeling is very effective for visualizing the internal physical processes in 4 K-pulse tube coolers.

关键词： K-pulse tube cooler two-stage computational model.

Board-invited review: Sensitivity and responses of functional groups to feed processing methods on a molecular basis

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Journal of Animal Science and Biotechnology 2013年第1期4卷 1-4页

作者： Peiqiang yu Department of Animal and Poultry Science College of Agriculture and BioresourcesUniversity of Saskatchewan 农业部

In complex feed structures, there exist main chemical functional groups which are associated with nutrient utilization and availability and functionality. Each functional group has unique molecular structure therefore produce unique molecular vibration spectral profile. Feed processing has been used to improve nutrient utilization for many years. However, to date, there was little study on processing-induced changes of feed intrinsic structure and functional groups on a molecular basis within intact tissue. this is because limited research technique is available to study inherent structure on a molecular basis. Recently bioanalytical techniques： such as Synchrotron Infrared Microspectroscopy as well as Diffuse Reflectance Infrared Fourier transform molecular spectroscopy have been developed. these techniques enable to detect molecular structure change within intact tissues. these techniques can prevent destruction or alteration of the intrinsic protein structures during processing for analysis. However, these techniques have not been used in animal feed and nutrition research. the objective of this review was show that with the advanced technique, sensitivity and responses of functional groups to feed processing on a molecular basis could be detected in my research team. these functional groups are highly associated with nutrient utilization in animals.

关键词： Sensitivity and responses of functional groups Molecular structures Feed processing Nutrient utilizationand availability

Black hole evaporation and its remnants with the generalized uncertainty principle including a linear term

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Communications in theoretical Physics 2024年第2期76卷 125-136页

作者： Bo yu Zheng-wen Long College of Physics Guizhou UniversityGuiyang550025China

In recent years,researchers have investigated the evaporation of Schwarzschild black holes using various forms of the generalized uncertainty principle(GUP),metric quantum correction,and noncommutative geometry,***,there are differences between the GUP correction and the other two methods in terms of describing the later stages of black hole ***,some studies argue that the GUP with a negative parameter cannot effectively correct black hole evaporation,while others contend that the positivity or negativity of the GUP parameters should not affect the correction *** the above into consideration,we reconsider black hole evaporation with the generalized uncertainty principle including a linear term(LGUP),and examine the case of negative *** results indicate that the evaporation behavior of both Schwarzschild black holes and Reissner–Nordstr?m black holes,under LGUP correction,is consistent with the results of metric quantum correction and non-commutative ***,the negative parameter LGUP can also effectively correct for black hole evaporation.

关键词： black hole evaporation generalized uncertainty principle negative parameter

Competition between Buneman and Langmuir Instabilities

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Chinese Physics Letters 2012年第3期29卷 146-149页

作者： GUO Jun yu Bin College of Mathematics and Physics Qingdao University of Science and TechnologyQingdao 266061 Key Laboratory of Geospace Environment University of Science and Technology of ChinaHefei 230026

the electron-ion beam instabilities are studied by one-dimensional electrostatic particle-in-cell *** simulation results show that both the low-frequency Buneman mode and high-frequency Langmuir wave(LW)are excited in the nonlinear *** power of Buneman instability is stronger than that of the *** Buneman instability is firstly *** the backward LW appears,which is probably excited by the particles trapped in the wave potential and moving opposite to the original beam *** some time,the forward LW can be found,which has a larger maximum frequency than that of the backward *** the decrease of the electron drift velocity,the instabilities become weaker;the LW appears to have almost equal intensities and becomes symmetric for forward and backward propagation *** LW can also heat the electron,so the relative drift speed cannot far exceed the electron thermal speed,which is not helpful to the development of Buneman instability.

关键词： backward excited beam

Oxidation behavior of single crystal tMS-82+ superalloy in air

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中国有色金属学会会刊：英文版 2007年第A1期17卷 136-140页

作者：武英宋桂明周少雄 t.NARItA Central Iron and Steel Research Institute Advanced technology and Materials Co Ltd Beijing 100081China Research Group of Interface Control Engineering Graduate School of EngineeringHokkaido UniversityKita-13Nishi-8Kita-kuSapporo 060-8628Japan Fundamentals of Advanced Materials Delft University of TechnologyKluyverweg 12629 HS DelftNetherlands

the oxidation behavior of the single crystal Ni-based superalloy tMS-82+ was studied under cyclic condition at 900 and 1 000 ℃ for 200 h in air. the oxidation kinetics for the superalloy at both exposure temperatures was explained by the subparabolic relationship. the results show that increasing the exposure temperature from 900 to 1 000 ℃,the amounts of α-Al2O3,(Ni,Co)Al2O4 and NiCr2O4 increase,resulting in a higher mass gain. the oxides consist of(Ni,Co)O,CrtaO4,AltaO4,Cr2O3,θ-,-α-Al2O3 and(Ni,Co)Al2O4 in the specimen at 900 ℃,but NiCr2O4 spinel forms for the specimen exposed at 1 000 ℃ except the above mentioned oxides. A continuous α-Al2O3 layer is responsible for a slow growth rate of the scale after an initial rapid oxidation of NiO.

关键词：单晶体镍氧化行为微观结构