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Atmospheric and Oceanic Science Letters 2024年第2期17卷 52-59页

作者： Nan Yao Yaoming Ma Binbin Wang Jun Zou Jianning Sun Zhipeng Xie Land–Atmosphere Interaction and Its Climatic Effects group State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina College of Atmospheric Science Lanzhou UniversityLanzhouChina National Observation and Research Station for Qomolongma Special Atmospheric processes and Environmental Changes DingriChina Kathmandu Center of Research and Education Chinese Academy of SciencesBeijingChina China–Pakistan Joint Research Center on Earth Sciences Chinese Academy of SciencesIslamabadPakistan School of Atmospheric Sciences Nanjing UniversityNanjingChina Jiangsu Provincial Collaborative Innovation Center for Climate Change NanjingChina

正确认识不同区域能量和水分循环特征是研究局地地气相互作用及准确预测区域天气,气候变化的关键.为了研究属于干旱/半干旱气候的青藏高原(TP)和湿润/半湿润气候的长江流域(YRR)之间地表能量和水分交换的异同,本文对比分析了两个区域8... 详细信息

正确认识不同区域能量和水分循环特征是研究局地地气相互作用及准确预测区域天气,气候变化的关键.为了研究属于干旱/半干旱气候的青藏高原(TP)和湿润/半湿润气候的长江流域(YRR)之间地表能量和水分交换的异同,本文对比分析了两个区域8个不同地表类型(包括高山荒漠,高山草地,(平原)城市和(平原)草地等)观测站点的地表辐射和能量通量数据.结果显示:(1)TP由于高原大气层稀薄且空气洁净,年平均入射短波辐射为251.3W m^(-2),是YRR的1.7倍.加之高原地表反照率高导致反射辐射(59.6 W m^(-2))是YRR的2.87倍.入射及出射的长波辐射为231.5和338.0 W m^(-2),分别为YRR的0.64和0.83.而两个区域的净辐射差异不大;(2)草地站更多的潜热释放使得地表总加热效率高于城市和高山荒漠,TP和YRR的草地站的年平均潜热分别为35.0和38.8 W m^(-2),而植被稀疏且土壤干燥的高山荒漠地区感热最大,年平均感热为42.1 W m^(-2);其次是城市下垫面,其年平均感热为37.7 W m^(-2).研究结果揭示了不同气候背景下典型下垫面地气相互作用特征,为地气相互作用过程深入分析奠定了基础.

关键词：能量和水分交换辐射分量地表能量通量青藏高原长江流域不同地表类型

Characteristics and Mechanism of Reduction and Smelting-separation Process of Copper Slag

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Journal of Iron and Steel Research(International) 2015年第2期22卷 121-127页

作者： Jun ZHANG Yuan-hong QI Ding-liu YAN Xiang-li CHENG Peng HE State Key Laboratory of Advanced Steel processes and Products China Iron and Steel Research Institute Group

The characteristics And mechanism of the reduction and smelting-separation process of the copper slag were studied by investigating the variation ：rule of metallization ratio, yield as well as carbon content of iron nuggets. The formation of molten slag is necessary for slag-iron separation, And iron is in half-molten state during smelting-separa- tion process, the carbon content of which is about 1.25 %. Carburization occurs through direct contact between car- bon and iron in essence, no matter in solid or molten state. The carburization rate is slow below 1 200 ℃ , which is inhibited by the existence of slag. Residual FeO in molten slag tends to form fayalite with SiOz in the copper slag, which is the root cause for the low mehing temperature of copper slag. The addition of CaO improves the reducibility of the copper slag, but Al2 O3 addition has no obvious effect. The melting temperature of slag affects the carburiza- tion extent in solid state, while the content of FeO in molten slag affects that in molten state, both of which co-de termine the carbon content in iron nuggets.

关键词： copper slag reduction smelting-separation earburization iron nugget

Numerical Simulation on the Effect of Conveyor Velocity of the Roller Table on Stress Distribution and Evolution in Large Aluminum Alloy Thick Plates

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Journal of Shanghai Jiaotong university(Science) 2023年第2期28卷 255-263页

作者：祝楷熊柏青闫宏伟张永安李志辉李锡武刘红伟温凯闫丽珍 State Key Laboratory of Non-ferrous Metals and processes GRINM Group Co.Ltd.Beijing 100088China GRIMAT Engineering Institute Co. Ltd.Beijing 101407China General Research Institute for Nonferrous Metals Beijing 100088China

Solution heat treatment combined with a rapid quenching operation,which can effectively suppress the decomposition of the supersaturated solid solution in the matrix,is a vital process step for producing large precipitation-hardenable aluminum alloy thick plates with desired ***,large thermal gradients that result from the non-uniform cooling rates during quenching usually give rise to severely heterogeneous distributions of residual stress in thick *** presence of roller-hearth furnaces makes it possible to achieve continuous and integral solution-quenching treatment for large aluminum alloy thick *** conveyor velocity of the roller table in the roller-hearth furnace is a key parameter but its influence is less addressed in ***,in the present work,finite element thermal-mechanical simulations taking into account different conveyor velocities of the roller table were employed to predict the temperature variations and residual stress distributions in large aluminum alloy thick plates during quenching *** different velocities were utilized in the *** modeling results showed that the temperature evolutions as well as the distributions of the induced internal stresses in those large thick plates during quenching treatments were indeed affected by the conveyor *** velocities were demonstrated to be favorable for gaining thick plates being with relatively homogeneous residual stress distributions in the plates.

关键词： conveyor velocity roller table residual stress finite element thermal-mechanical simulation aluminum alloy thick plate

Morphological transformation of elongated MnS inclusions in non-quenched and tempered steel during isothermal heating

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Journal of Iron and Steel Research(International) 2023年第3期30卷 525-536页

作者： Jun-yu Liu Cheng-song Liu Rui-juan Bai Wei Wang Qing-bo Wang Hua Zhang Hong-wei Ni The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Hubei Provincial Key Laboratory for New processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan 430081HubeiChina Henan Jiyuan Iron&Steel(group)Co. Ltd.Jiyuan 459000HenanChina

Elongated MnS inclusions in rolled non-quenched and tempered steel tend to cause the mechanical anisotropy of steel,deteriorate the mechanical properties and degrade the quality and service life of the steel *** reveal the mechanisms of morphological transformation of strip-shaped MnS inclusions during isothermal heating,the effects of heat treatment time and temperature on the morphology,number density and size distribution of elongated MnS inclusions were systematically studied and discussed.A diffusion couple experiment was also conducted to clarify the diffusion mode of MnS *** experimental results showed that with the increase in isothermal heating time(from 0 to 10 h at 1473 K)and temperature(from 1173 to 1573 K for 3.0 h),the number density and average aspect ratio of MnS inclusions generally showed an increase and decrease trend,respectively,while the area fraction remained stable and only slightly fluctuated around 0.4%.In the diffusion couple,after the isothermal heating at 1473 K for 3.0 h,the elements Mn and S in the steel near the steel-MnS interface were very stable without any concentration *** morphology change sequence of the elongated MnS inclusions in the rolled non-quenched and tempered steel during the isothermal heating was strip→cylinderization→spindle→*** between the diameter of MnS inclusion and the spacing between two MnS inclusions after splitting,and the fitting goodness of different n values under different experimental time and temperature confirmed that the driving force for the transformation of MnS inclusions during the isothermal heating was surface diffusion,instead of volume diffusion.

关键词： Non-quenched and tempered steel MnS inclusion Isothermal heating Surface diffusion Morphological transformation

Fundamentals of fast reduction of ultrafine iron ore at low temperature

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Journal of University of Science and Technology Beijing 2008年第2期15卷 104-109页

作者： Pei Zhao Peimin Guo State Key Laboratory for Advanced Iron and Steel processes and Materials China Iron and Steel Research Institute Group Beijing 100081 China

Fundamentals on the fast reduction of ultrafine iron ore at low temperature, including characterization of ultrafine ore, deoxidation thermodynamics of stored-energy *** ore, kinetics of iron ore deoxidation, and deoxidation mechanism, etc., and a new ironmaking process are presented in this article. Ultrafine ore concentrate with a high amount of stored energy can be produced by mechanical milling, and can be deoxidated fast below 700℃ by either the coal-based or gas-based process. This novel process has some advantages over others： high productivity, low energy consumntion, and environmental friendliness.

关键词： ironmaking low temperature fast reduction powder refining thermodynamics kinetics

AlScN films prepared by alloy targets and SAW device characteristics

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Journal of Rare Earths 2023年第3期41卷 434-439,I0004页

作者： Kuo Men Hao Liu Xingquan Wang Qian Jia Zhaochong Ding Huating Wu Daogao Wu Yuhua Xiong State Key Laboratory of Advanced Materials for Smart Sensing GRINM Group Co.Ltd.Beijing 100088China GRIMAT Engineering Institute Co. Ltd.Beijing 101402China State Key Laboratory of Non-ferrous Metals and processes GRINM Group Co.Ltd.Beijing 100088China GRIKIN Advanced Material Co.Ltd. Beijing 100220China GRIREM Advanced Materials Co.Ltd. Beijing 100088China

In this paper,we reported a surface acoustic wave(SAW)device prepared and optimized by piezoelectric films containing AIN,AIScN(Sc-20 at%)and AIScN(Sc-30 at%)by reactive magnetron sputtering using Al and AISc alloy *** calculated the material intrinsic electromechanical coupling coefficient k_(t)^(2) of AlScN(Sc-20 at%)and AlScN(Sc-30 at%)which are much better than *** can be explained by the lattice ***,the results were confirmed by transmission electron microscopy(TEM)observation of the *** the SAW devices based on three thin films were tested by vector network analysis obtaining the device equivalent electro mechanical coupling coefficient k_(eff)^(2).The value of AIScN(Sc-20 at%)k_(eff)^(2),which equals to 1.94%,is higher than that of AIN and AIScN(Sc-30 at%)while the value of AIScN(Sc-30 at%)k_(t)^(2) is higher than that of *** is shown in our study that the crystallinity and orientation of the material still have a greater impact on k_(eff)^(2) but it does not have influence on k_(t)^(2) in the actual device preparation process.

关键词： AlScN film Alloy targets SAW Electromechanical coupling coefficient k_(t)^(2) Crystallinity Orientation

Effect of grain structure on fatigue crack propagation behavior of Al-Cu-Li alloys

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Journal of Materials Science & Technology 2023年第17期148卷 75-89页

作者： Dingding Lu Ben Lin Tianle Liu Sanxi Deng Youjie Guo Jinfeng Li Danyang Liu School of Materials Science and Engineering Central South UniversityChangsha 410083China China Academy of Launch Vehicle Technology Beijing 100076China State Key Laboratory of Nonferrous Metals and processes GRINM Group Co.LTD.Beijing 100088China Key Laboratory of Nonferrous Metal Materials Science and Engineering Ministry of EducationChangsha 410083China

Recrystallization behavior during optimized heat treatments provides a potential to obtain desirable grain structure,which significantly improves the mechanical properties of aluminum *** influence of grain structures on fatigue crack propagation(FCP)behaviors of Al-Cu-Li alloy with hot-rolled(HR)and cold-rolled(CR)was *** boundaries have a significant impact on small crack growth rates,which is reflected in the pronounced fluctuation of fatigue crack growth of HR specimens after solution ***,the specific cellular structure within grains can improve the deformation capacity of alloys due to their accommodation of plastic deformation,which contributes to the lower fatigue crack growth rates and higher threshold values in HR *** intragranular deflection also decelerates the FCP rate and occurs in these regions of large grain without subgrain *** occurs in the CR specimens,resulting in small anisotropy on the fatigue resistance for the different orientations in the Paris stage due to the recrystallization *** cracks can be deflected and tend to propagate along the grain boundaries when it goes into the grain with a relatively low Schmidt factor value.

关键词： Al-Cu-Li alloy Fatigue crack propagation Grain structure Microcrack

Use of residual lignocellulosic biomass for energetic uses and environmental remediation through pyrolysis

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Energy Storage and Saving 2022年第3期1卷 129-135页

作者： Nezly Martelo Mirari Antxustegi Eriz Corro Marya Baloch Rosaria Volpe Antonio Gagliano Alberto Fichera María Gonzalez Alriols Biorefinery processes Research group(BioRP) Chemical and Environmental Engineering DepartmentUniversity of the Basque CountryUPV/EHUSan Sebastian20018Spain Department of Electrical Electronics and Computer EngineeringUniversity of CataniaCatania95125Italy

This study analyzes the potential of an agricultural residue,hazelnut shells,as raw material in a combined ther-mochemical process to obtain pyro-gas and biochar for environmental *** novelty of this study relies on the definition of a pyrolytic polygeneration process to simultaneously attain an energy-type product and abiochar to maximize the versatility of the products and their *** this aim,the heating value of the gas and its potential to feed a micro combined heat and power(micro-CHP)system was ***,the resulting biochar was chemically activated and tested as adsorbent for the removal of contaminants from an aqueous *** show that the pyro-gas from the shell-type residue was suitable to be used as feed stream in a micro-CHP unit,which was able to operate near the full-load(91.9%)with electrical and thermal efficiencies of 27.6%and 57.9%,*** the case of the biochar fraction,poor results were found for the char prior to ***,once it was activated with KOH,the resulting activated carbon presented high effectiveness as adsorbent and complete removal of the measured compound(methylene blue)was achieved.

关键词： Residual lignocellulosic biomass Bioenergy Pollutants removal Micro-CHP Biogas Biochar

Smart Breeding Platform:A web-based tool for high-throughput population genetics,phenomics,and genomic selection

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Molecular Plant 2024年第5期17卷 677-681页

作者： Huihui Li Xin Li Peng Zhang Yingwei Feng Junri Mi Shang Gao Lele Sheng Mohsin Ali Zikun Yang Liang Li Wei Fang Wensheng Wang Qian Qian Fei Gu Wenbin Zhou State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural Sciences(CAAS)Beijing 100081China Nanfan Research Institute CAASSanyaHainan 572024China DAMO Academy Alibaba GroupHangzhou 310023China Hupan Lab Hangzhou 310023China Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya CityHainan Province 572024China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhouZhejiang 310006China

Dear Editor,In the era of big data and artificial intelligence,"smart breeding"has become a broad conceptual framework encompassing the paradigm shift of crop breeding to relying on analysis of high-throughput population genetics and phenomics data to conduct genomic selection,allowing identification and optimal use of the genetic potential in crop species(Xiao et al.,2022;Xu et al.,2022;Wang et al.,2023).Most existing tools for analyzing high-throughput breeding data require extensive computational power,complex installation processes,and command-line expertise and are therefore challenging and inconvenient for the majority of researchers and breeders(Brandies and Hogg,2021).

关键词： breeding artificial breed

Biomass derived oligosaccharides for potential leather tanning

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Collagen and Leather 2023年第4期5卷 64-66页

作者： Zhicheng Jiang Wei Ding Jiajun Fan Yuhe Liao Javier Remón Bi Shi College of Biomass Science and Engineering Sichuan UniversityChengdu 610065China National Engineering Laboratory for Clean Technology of Leather Manufacture Sichuan UniversityChengdu 610065China China Leather and Footwear Research Institute Co.Ltd. Beijing 100015China Department of Chemistry Green Chemistry Centre of ExcellenceUniversity of YorkYork YO105DDUK Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China thermochemical processes group Aragón Institute for Engineering Research(13A)University of ZaragozaC/Mariano Esquillor s/n50018 ZaragozaSpain

The global demand for renewable and affordable feed-stocks,combined with the worldwide targets for reduc-ing carbon emissions,is the driving force behind a breakthrough in resource revolution and GreenTech innovations[1].Owing to the vast reserves and short growing cycle,utilizing lignocellulosic biomass as an alternative to petroleum and environmentally friendly feedstock to furnish bioenergy and biomaterials is key to building a more sustainable *** mainly contains three biopolymers,i.e.,cellulose,hemicellulose and *** the centuries,utilization of lignocellu-lose has crossed its possible molecular scale ranging from 101 m,as the original matrix,to 10-10 m,as a mono-meric molecule.

关键词： cellulose breakthrough utilizing