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Effect of final electromagnetic stirring on solidification microstructure of GCr15 bearing steel in simulated continuous casting

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Journal of Iron and Steel Research International 2020年第2期27卷 141-147页

作者： Dan-qing Jiang Rui Wang Qiong Zhang Zhen-qiang Zhang Ting-sheng Tu Jiang Wang Zhong-ming Ren School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The effect of final electromagnetic stirring on the solidification structure,element segregation,and carbides of GCrl5 bearing steel was *** experiment of continuous casting of the steel was carried out by using a continuous casting physical simulation apparatus with the final electromagnetic *** liquid core profile was revealed by the pour-out method during the solidification *** ingots were produced under different electromagnetic stirring parameters for *** results show that,at the final stage of solidification,intense electromagnetic stirring exacerbates the central carbon segregation,resulting in more serious precipitation of the primary *** is also found that the carbides in the segregation area are dominantly M3C type,together with a small amount of M7C3-type and M3C2-type *** this physical simulation model,the optimal stirring parameters to obtain a fine and homogeneous structure are the liquid pool width of 15 mm,current intensity of 150 A,and stirring frequency of 5 Hz.

关键词： GCrl5 bearing steel Solidification structure Continuous casting final electromagnetic stirring Segregation Carbide

Fluidization of binary mixtures of sisal residue and sand:A new model for deriving the final fluidization velocity

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Particuology 2018年第5期16卷 10-22页

作者： David Vasconcelos Gabriele Batalha Luis Gabriel Pereira Carlos Augusto Pires Chemical Reaction Engineering Laboratory Federal University of Bahia40.210-910SalvadorBABrazil

The influence of different factors on the fiuidization of a binary mixture of sisal residue and sand was *** particle sizes of the sand and sisal residue were varied from 0.2to 0.8mm and the biomass mass fractions from 2% to 9%.Some segregation was noted,and a significant relationship was found among the final fluidization velocity (Uff),the biomass and sand sizes,and the biomass mass fraction.A novel model was developed for predicting Uff,leading to an average discrepancy of 12.69% between the measured and predicted Uff compared with the best match of 15.32% when using a model from a previous *** new model was applied to data from studies using other biomass and a broad range of particle *** average divergences from measured values when using the new model were 7.9% for corn cob and walnut shell,and 20.5% for sweet sorghum bagasse,tobacco residue, and soy *** were superior to the values derived using other *** results confirm the accuracy of the model developed in this work and show that it represents a viable alternative way to calculate Uff for a binary mixture of sand and biomass.

关键词： Fluidization Binary mixture Sisal residue final fluidization velocity model

SG-II-Up prototype final optics assembly:optical damage and clean-gas control

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High Power Laser Science and Engineering 2015年第1期3卷 64-69页

作者： Dongfeng Zhao Li Wan Zunqi Lin Pin Shao Jianqiang Zhu Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences

The Shenguang-II Upgrade(SG-II Up) facility is an under-construction high-power laser driver with eight beams, 24 kJ energy, 3 ns pulse duration and ultraviolet laser output, in the Shanghai Institute of Optics and Fine Mechanics, *** prototype design and experimental research of the prototype final optics assembly(FOA), which is one of the most important parts of the SG-II Up facility, have been completed on the ninth beam of the SG-II facility. Thirty-three shots were fired using 1-ω energy from 1000 to 4500 J and 3-ω energy from 500 to 2403 J with a 3 ns square pulse. During the experiments, emphasis was given to the process of optical damage and to the effects of clean-gas control. A numerical model of the FOA generated by the Integrated Computer Engineering and Manufacturing code for Computational Fluid Dynamics(ICEMCFD) demonstrated that a flux within 1–5 l s^(-1) and a 180 s period is effectual to avoid contaminant sputtering to the optics. The presence of surface ‘mooning' damage and surface spots located outside the clear aperture are induced by contaminants such as wire, silica gel and millimeter order fiber and metal.

关键词： final Optics Assembly optical damage SG-II-Up

International Geophysical Calendar1997(final)

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地球物理学报 1997年第2期 289-290页

(Seothersideforinfoffllationonuseofthiseqlendar)NOreSonotherdates回ndmpramsofinterest:"一***

关键词： UT final International Geophysical Calendar1997

Detection of Pancytopenia Associated with Clinical Manifestation and Their final Diagnosis

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Open Journal of Blood Diseases 2015年第3期5卷 17-30页

作者： Mohammad Arphan Azaad Yongping Li Qiurong Zhang Haixia Wang Department of Clinical Medical College Dali University Dali China Department of Hematology Affiliated Hospital Dali University Dali China

Background: Pancytopenia is a common hematological parameter detected in Hematology department. It is important to find out the etiology of pancytopenia for the better management of patient. Pancytopenia represents a wide range of age groups and most pancytopenia is purely of bone marrow dysfunction origin. However, other causes such as hypersplenism and SLE are also frequently encountered. Objectives: To differentiate various causes of pancytopenia, to evaluate the hematological parameters in pancytopenic cases, and to analyze clinical manifestations in cases of pancytopenia. Materials and Methods: There were 25 admitted cases of pancytopenia at Affiliated Hospital of Dali University between the calendar year 2013 and 2014. A detail study was done on the basis of age, gender, clinical features, typical laboratory investigations, bone marrow examination, and final diagnosis. Results and Conclusions: Among 25 cases studied, megaloblastic anemia was the common cause of pancytopenia and incidence of megaloblastic anemia was higher in males after 5th decade of life. Pancytopenic cases age was ranging from 15 to 80 years. Fatigue and dizziness were the most common clinical features presented.

关键词： Pancytopenia Causes Clinical Features final Diagnosis

Geology of the Grove Mountains in East Antarctica——New evidence for the final suture of Gondwana Land

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Science China Earth Sciences 2003年第4期46卷 305-319页

作者：刘小汉赵越刘晓春俞良军 Laboratory of Lithosphere Tectonic Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Institute of Geomechanics Chinese Academy of Geological Sciences

Grove Mountains consists mainly of a series of high-grade (upper amphibolite to granu-lite facies) metamorphic rocks, including felsic granulite, granitic gneiss, mafic granulite lenses and charnockite, intruded by late tectonic gneissic granite and post-tectonic granodioritic veins. Geo-chemical analysis demonstrates that the charnockite, granitic gneiss and granite belonged to aluminous A type plutonic rocks, whereas the felsic and mafic granulite were from supracrustal materials as island-arc, oceanic island and middle oceanic ridge basalt. A few high-strained shear zones disperse in regional stable sub-horizontal foliated metamorphic rocks. Three generations of ductile deformation were identified, in which D1 is related to the event before Pan-African age, D2 corresponds to the regional granulite peak metamorphism, whereas D3 reflects ductile extension in late Pan-African orogenic period. The metamorphic reactions from granitic gneiss indicate a single granulite facies event, but 3 steps from mafic granulite, with P-T condition of M1 800℃, 9.3×105 Pa; M2 800—810℃, 6.4×105 Pa ; and M3 650℃ have been recognized. The U-Pb age data from representative granitic gneiss indicate (529±14) Ma of peak metamorphism, (534±5) Ma of gran-ite emplacement, and (501±7) Ma of post-tectonic granodioritic veins. All these evidences sug-gest that a huge Pan-African aged mobile belt exists in the East Antarctic Shield extending from Prydz Bay via Grove Mountains to the southern Prince Charles Mountains. This orogenic belt could be the final suture during the Gondwana Land assemblage.

关键词： East Antarctic Shield, Grove Mountains, Pan-African orogen, Gondwana Land, final suture.

On the Lagrange Stability of Motion and final Evolutions in the Three-Body Problem

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Applied Mathematics 2013年第2期4卷 369-377页

作者： Stepan P. Sosnitskii Institute of Mathematics Ukrainian National Academy of Sciences Kyiv Ukraine

For the three-body problem, we consider the Lagrange stability. To analyze the stability, along with integrals of energy and angular momentum, we use relations by the author from [1], which band together separately squared mutual distances between bodies (mass points) and squared distances from bodies to the barycenter of the system. In this case, we prove the Lagrange stability theorem, which allows us to define more exactly the character of hyperbolic-elliptic and parabolic-elliptic final evolutions.

关键词： Lagrange Stability Distal Motion Hill Stable Pair final Evolutions

“Haiyang Cup” China Knitwear Creative Design Invitational final and Award Ceremony witnessed a great success

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China Textile 2019年第10期 48-49页

“Haiyang Cup” China Knitwear Creative Design Invitational final and Award Ceremony, under the guidance of China National Textile and Apparel Council, co-sponsored by China Knitting Industry Association and Haiyang Municipal People’s Government, was held in Haiyang on August 30th. The event was chaired by Zhang Qinghui, Chairman of China Fashion Association, and Qu Jing, Vice President of China Knitting Industry Association. In addition, the Organizing Committee specially invited such big names as judges, including Liu Yong, the “CFA - Top Award” designer and associate professor of Wuhan Textile University, Guo Ruiping, Professor of Beijing Fashion Institute, Director of China Knitwear Design and Development Center, and Founder of brand “DUXI”, Huang Gang, founder of brand “HUANG GANG” and China Top Ten Fashion Designer, Wang Ying, design director of Beijing Snow-lotus Cashmere Co.

关键词： Creative final Cup Director director Center Yong under

A　Study　on　final　Volatile　Yield　of　Pulverized　Coal　Pyrolysis　with　Thermobalance

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Journal of Harbin Institute of Technology(New Series) 1995年第3期2卷 19-22页

作者：朱群益赵广播阮根健秦裕琨

The final volatile yield of pulverized coal pyrolysis was investigated by means of thermobalance. The experimental conditions are as follows: heating rate, 500℃/min; final temperature, 400 ～1500K; particle diameter, 57～300μm. This paper gives the empirical formula indicating the relation among the final volatile yield, final temperature and coal type.

关键词： ss: Pulverized coal pyrolysis final volatile yield