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田口方法在钕铁硼品质分析中的应用

稀土 2009年第5期30卷 67-69页

作者：戎利军李培忠陈大力李红贾海军内蒙古包钢稀土高科技股份有限公司内蒙古包头014030

介绍了田口方法在钕铁硼生产品质分析中的应用方法,并应用田口方法对钕铁硼产品厚度偏差问题提出了新的解决思路和解决方案。

关键词：田口方法钕铁硼厚度偏差品质分析

Special issue on numerical simulation of multiphase and multiscale metallurgical processes

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Journal of Iron and Steel Research International 2023年第6期30卷 1057-1058页

作者： zhong-qiu Liu jun Li pei-yuan Ni School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina School of Materials Science and Technology Shanghai Jiao Tong UniversityShanghai 200240China

Steel production process is a multiphase and multiscale high-temperature metallurgical process involving complex physical behaviours and chemical *** movement of high-temperature melts closely affects the cleanliness,homogenization,and refinement of high-quality ***,due to the high temperature,invisibility,and difficult quantification of metallurgical process,the data that can be measured in high-temperature melts during production process are limited.

关键词： multiphase melts process

Differences in Organic C Mineralization Between Aerobic and Submerged Conditions in Paddy Soils of Southern Jiangsu Province,China

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Agricultural Sciences in China 2011年第9期10卷 1410-1418页

作者： HAO Rui-jun LI zhong-pei CHE Yu-ping State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 P.R. China Shanghai Institute of Landscape Gardening Shanghai 200232 P.R.China

Moisture regime plays a crucial role in the mineralization of soil organic carbon （SOC）. In this paper, the dynamics of SOC mineralization in typical paddy soils of Changshu, Jiangsu Province, China, was investigated by incubation test in laboratory. The differences in SOC mineralization under aerobic and submerged conditions of paddy soils were also studied. Results showed that the daily mineralization of SOC under different moisture regimes was significantly different in the whole incubation period, at the beginning of the incubation, it decreased quickly under aerobic condition, but increased rapidly under submerged condition, and both remained constant after 10 d of incubation. The differences in SOC mineralization were found to be mainly at the beginning period of the incubation and decreased along with the incubation time. Thus, the difference was not significantly different at the later incubation period. The respiration intensity, daily and cumulative mineralization of SOC under aerobic condition was 2.26-19.11, 0.96-2.41, and 0.96-2.41 times than those .under submerged condition, respectively. Statistic analyses showed that the higher the contents of microbial biomass carbon and nitrogen, the more significant difference in respiration intensity between aerobic and submerged conditions, but the higher the contents of microbial biomass nitrogen and dissolved organic carbon, the more significant difference in daily mineralization of SOC between the two conditions. The decrease in soil microbial activity under submerged condition was the main reason leading to the decrease in respiration intensity, but the decrease in SOC mineralization was also correlated with the changes in dissolved organic carbon over the whole incubation period.

关键词： moisture regime paddy soil SOC mineralization aerobic condition submerged condition difference

Editorial for rare metals, special issue on advanced thermoelectric materials

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Rare Metals 2018年第4期37卷 257-258页

作者： Yan-zhong pei Xiao-Yuan Zhou Tie-jun Zhu School of Materials Science and Engineering Tongji University College of Physics Chongqing University School of Materials Science and Engineering Zhejiang University

As a clean energy technology to combat the global energy dilemma and the environmental problems, thermoelectrics that enable a direct conversion between heat and electricity have attracted increasing attention in recent decades. This solid-state, vibrationless technology has long been used for powering the spacecrafts of several deep-space missions and has limited commercial use in niche market, but these are now actively considered for a variety of new applications, such as the conversion of automobile exhaust heat into electricity. Meanwhile, materials research flourishes with the knowledge that significantly improves the thermoelectric efficiency for even more applications. This motivates Rare Metals to have a special issue focusing on thermoelectrics.

关键词： Editorial for rare metals special issue on advanced thermoelectric materials

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超竞争下的企业战略协同

上海交通大学学报（哲学社会科学版） 2000年第4期8卷 86-89页

作者：陈继祥霍沛军王忠民上海交通大学安泰管理学院上海200052

阐述了企业在激烈的超竞争环境下 ,取得竞争优势过程中 ,与各参与者进行合作的重大作用。通过对企业价值网的分析 ,讨论了供应厂商、顾客用户、竞争厂商、互补厂商与核心企业的合作对竞争优势形成的贡献。从战略协同的角度探讨了合作的... 详细信息

阐述了企业在激烈的超竞争环境下 ,取得竞争优势过程中 ,与各参与者进行合作的重大作用。通过对企业价值网的分析 ,讨论了供应厂商、顾客用户、竞争厂商、互补厂商与核心企业的合作对竞争优势形成的贡献。从战略协同的角度探讨了合作的基础 ,并指出合作可以为建立企业的竞争优势。

关键词：企业战略厂商竞争优势合作超竞争环境战略协同核心企业重大参与者过程

Control of Equiaxed Crystal Ratio of High Carbon Steel Billets by Circular Seam Cooling Nozzle

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Journal of Iron and Steel Research International 2011年第2期18卷 24-30页

作者： LI pei-song LU jun-hui QIU Sheng-tao WANG zhong-ying ZHAO pei Northeastern University Shenyang 110004 Liaoning China State Key Laboratory of Advanced Steel Processing and Products Central Iron and Steel Research Institute Beijing 100081 China

A circular seam cooling nozzle and its online control system have been developed to reduce the center segregation in high carbon steel billets by decreasing the superheat of the molten steel and improving the equiaxed crystal ratio based on the numerical results. An industrial experiment has been carried out on a 150 mm× 150 mm caster to investigate the effect of the circular seam cooling nozzle on the superheat removal of the molten steel. The results show that the circular seam cooling nozzle can be used to control the casting temperature in a closed loop control system. The online control system can be effectively adapted to the variation of operating parameters. The casting lasts about 4 h and about 400 t steel is successfully produced in a continuous operation. The removal of about 14 ℃ superheat and the improvement of approximate 10% equiaxed crystal ratio can be achieved by the newly developed circular seam cooling nozzle.

关键词： circular seam cooling nozzle high equiaxed crystal ratio billet low superheat

Effects of Glucose Addition on N Transformations in Paddy Soils with a Gradient of Organic C Content in Subtropical China

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Agricultural Sciences in China 2010年第9期9卷 1309-1316页

作者： JIA jun-xian LI zhong-pei LIU Ming CHE Yu-ping State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 P.R. China Graduate University Chinese Academy of Sciences Beijing 100049 P.R.China College of Art and Science Shanxi Agricultural University Taigu 030801 P.R. China

To better understand the interaction of N transformation and exogenous C source and manage N fertilization, the effects of glucose addition on N transformation were determined in paddy soils with a gradient of soil organic C content. Changes in N mineralization, nitrification and denitrification, as well as their response to glucose addition were measured by incubation experiments in paddy soils derived from Quaternary red clay in subtropical China. Mineralization and denitrification were changed in order of increasing soil fertilities： high 〉 middle 〉 low. During the first week of incubation, net N mineralization and denitrification rates in paddy soil with high fertility were 1.9 and 1.1 times of those in soil with middle fertility and 5.3 and 2.9 times of those in soil with low fertility, respectively. Addition of glucose decreased net N mineralization by approximately 78.8, 109.2 and 177.4% in soils with high, middle and low fertility, respectively. However, denitrification rates in soils with middle and low fertility were increased by 14.4 and 166.2% respectively. The highest nitrate content among the paddy soils tested was 0.62 mg kg-1 and the highest nitrification ratio was 0.33%. Addition of glucose had no obvious effects on nitrate content and nitrification ratio. It was suggested that the intensity of mineralization and denitrification was quite different in soils with different fertility, and increased with increasing soil organic C content. Addition of glucose decreased mineralization, but increased denitrification, and the shifts were greater in soil with low than in soil with high organic C content. Neither addition of glucose nor inherent soil organic C had obvious effects on nitrification in paddy soils tested.

关键词： paddy soils of subtropical China soil fertility glucose addition nitrogen transformation

Does hyoscine butylbromide really improve polyp detection during colonoscopy? A meta-analysis of randomized controlled trials

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World Journal of Gastroenterology 2014年第22期20卷 7034-7039页

作者： pei-Jing Cui Jing Yao Hua-zhong Han Yi-jun Zhao jun Yang Department of Geriatrics Ruijin HospitalShanghai Jiao Tong University School of Medicine Department of Surgery Sixth People’s HospitalShanghai Jiao Tong University

AIM: To investigate the benefits of hyoscine butylbromide in polyp detection during colonoscopy by a meta-analysis of available randomized controlled trials (RCTs).

关键词： Hyoscine butylbromide Polyp detection Adenoma detection Colonoscopy

Thermal-flow-electric coupling performance analysis of a liquid-immersed battery thermal management system

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Science China Technological Sciences 2025年第1期 157-176页

作者： Qiang GAO jun TIAN Chujin BAO Yangfan zhong Chengbin ZHANG Yongping CHEN School of Energy and Environment Southeast University Battery Testing Center China North Vehicle Research Institute Zhejiang Immertech Co. Ltd. Alibaba Cloud Computing Co. Ltd.

Ensuring the safety and performance of lithium-ion batteries(LIBs) is a significant challenge for electric *** tackle this issue, an innovative liquid-immersed battery thermal management system(LIBTMS) using bionic baffles with fish-like perforations is developed. The thermal-flow-electric coupling characteristics of LIBTMSs with different baffle structures(no baffle, conventional baffle, baffle with circular perforations and baffle with fish-like perforations) are systematically investigated using experimental and numerical methods. The results indicate that the forced flow scheme exhibits better thermal management performance and voltage equalization than static flow. Moreover, the LIB temperatures and voltage deviations of different LIBTMSs increase quickly with increasing discharge rates. More importantly, the innovative LIBTMS exhibits the best thermoelectric performance due to its excellent thermoelectric equilibrium behavior caused by high electrical and temperature consistency, as well as the best overall performance involving the balance between the pressure loss and heat transfer capacity of the system. Compared with other structures, the innovative LIBTMS using baffles with fish-like perforations exhibits a maximum reduction of 10.1%, 15.2%, 25.8% and 9.0% in LIB maximum temperature, maximum temperature difference, system pressure drop and voltage deviation, respectively, under the same operating ***, for the LIBTMS using baffles with fish-like perforations, the bottom inlet and top outlet configuration and coolant precooling are suggested to enhance cooling performance.

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