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Detetivity Conversion at Different Target Temperature for Infrared Detector

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Detetivity Conversion at Different Target Temperature for In...

Photonics Asia 2004;Sensors and Imaging

作者： Jinhao Zhao (guangzhou SAT Infrared Technology Co. Ltd .guangzhou 510730. China)

A method of detectivity D*(T, f ) conversion for infrared detector at different target temperatures , is introduced in this paper. And it has been proved, the D* value only relate to the relative spectral distribution... 详细信息

关键词： infrared detector, specific detectivity D*(T, f ), different target temperature conversion coefficient

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高压电网死区故障解决方案

水电能源科学 2011年第8期29卷 183-186页

作者：邵华广东粤华发电有限责任公司广东广州510730

分析了死区故障与保护的配置关系,介绍了高压电网的电流死区和电压死区,阐述了死区故障的成因和危害,提出了各种死区故障的解决措施。以母线死区故障为重点,分析了母联分列死区、母线并列死区和母联充电死区,结合国家电网公司相关技术要... 详细信息

分析了死区故障与保护的配置关系,介绍了高压电网的电流死区和电压死区,阐述了死区故障的成因和危害,提出了各种死区故障的解决措施。以母线死区故障为重点,分析了母联分列死区、母线并列死区和母联充电死区,结合国家电网公司相关技术要求,以母联充电死区为例,提出了切实可行的死区故障解决方案。

关键词：高压电网死区故障电流死区电压死区母联充电死区

High Efficiency Production of CSP in Zhujiang Steel

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High Efficiency Production of CSP in Zhujiang Steel

Research on Steelmaking Process of Ti Microalloyed Steel During EAF-LF-CSP Process

2006年薄板坯连铸连轧国际研讨会

作者： WANG Jin-bu HONG Bing-xiong FAN Sheng-biao CHAI Yi-zhong ZHANG Guo-guang (guangzhou zhujiang Iron & Steel Co. Ltd. guangzhou 510730 Guangdong China)

With both lines running in Zhujiang Steel , CSP is being the bottleneck of the production after EAF updating. To solve this problem, the high efficiency of continuous casting and the 1st caster’s modi

关键词： CSP continuous casting high efficiency

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Research on Steelmaking Process of Ti Microalloyed Steel Dur...

Impact of EnKF assimilating Himawari-8 all-sky infrared radiance on the forecasting of a warm-sector rainstorm event

2006年薄板坯连铸连轧国际研讨会

作者： MAO Xin-ping1, CHEN Xue-wen2, LI Lie-jun2, ZHONG Zhi-yong1, ZHUANG Han-zhou2, XU Chuan-fen1, LIU Yi-jun1, ZHANG Jinxing1 (1. guangzhou Zhujiang Steel Co., Ltd., guangzhou, 510730, China 2. CSP Applying Technology Institute, Technology Center of GISE, guangzhou, 510730, China)

This paper studies the technologies of deep deoxidation, deep desulphurization and low N steelmaking based on EAF-LF-CSP in Zhujiang Steel. By using of these technologies the content of [O], [N] and [

关键词： EAF-LF-CSP Ti microalloyed steel steel-making process

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Science China Earth Sciences 2024年第10期67卷 3110-3127页

作者： Shanshan LOU Lei ZHU Xuexing QIU guangzhou CHEN Song YUAN Shengnan ZHOU Anhui Meteorological Observatory Hefei 230031China Key Laboratory of Meteorological Disaster Ministry of Education(KLME)Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Joint International Research Laboratory of Climate and Environment Change(ILCEC)Nanjing University of Information Science&TechnologyNanjing 210044China Huaihe River Basin Meteorological Center Hefei 230031China Shouxian National Climatology Observatory Huaihe River Basin Typical Farm Eco-Meteorological Experiment Field of CMAShouxian National Comprehensive Meteorological Observation Special Experimental OutfieldShouxian 232200China Anhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing Hefei 230031China

Warm-sector rainstorms are highly localized events, with weather systems and triggering mechanisms are not obvious,leading to limited forecasting capabilities in numerical models. Based on the ensemble Kalman filter(PSU-En KF) assimilation system and the regional mesoscale model WRF, this study conducted a simulation experiment assimilating all-sky infrared(IR)radiance for a warm-sector rainstorm in East China and investigated the positive impact of assimilating the Himawari-8 moisture channel all-sky IR radiance on the forecast of the rainstorm. Results indicate that hourly cycling assimilation of all-sky IR radiance can significantly improve the forecast accuracy of this warm-sector rainstorm. There is a notable increase in the Threat Score(TS), with the simulated location and intensity of the 3-hour precipitation aligning more closely with observations. These improvements result from the assimilation of cloud-affected radiance, which introduces more mesoscale convective information into the model's initial fields. The adjustments include enhancements to the moisture field, such as increased humidity and moisture transport, and modifications to the wind field, including the intrusion of mid-level cold air and the strengthening of lowlevel convergent shear. These factors are critical in improving the forecast of this warm-sector rainstorm event.

关键词： Ensemble Kalman filter WRF model Himawari-8 All-sky radiance Warm-sector rainstorm

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水上溢油的气相色谱-质谱法鉴别

分析测试学报 2002年第5期21卷 47-49页

作者：赵瑞卿苏丹青高哲嫦梁志勤广州港务局环境监测站广东广州510700 广州港务局新港港务公司广东广州510730

利用气相色谱 -质谱法分析水上溢油样品和可疑溢油源样品 ,通过比较溢油样品和可疑溢油源样品的总离子流图的轮廓、m/z191和m/z217质量色谱图指纹和姥鲛烷 (Pr)与植烷 (Ph)的峰面积比值APr/APh,建立了水上溢油的GC

关键词：水上溢油气相色谱-质谱法鉴别水污染

A temporal framework for building up of healthy soils

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Frontiers of Agricultural Science and Engineering 2024年第2期11卷 292-296页

作者： Junling ZHANG Jiangzhou ZHANG Yunlong ZHANG guangzhou WANG State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijing 100193China Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources College of GrasslandResources and EnvironmentInner Mongolia Agricultural UniversityHohhot 010018China Key Laboratory of Grassland Management and Utilization Ministry of Agriculture and Rural Affairs of the People’s Republic of ChinaCollege of Grassland Science and TechnologyChina Agricultural UniversityBeijing 100193China

Healthy soils are vital for the diverse services provided by ecosystems to human society~[1], such as provisioning(food,fiber, timber, and fuel), regulation(climate, disease, and natural hazards), waste treatment, nutrient cycling, and cultural services. Soil has a three phase system and the interactions between soil chemical, biological, and physical attributes determine functions(hydraulic, thermal, and gas fluxes).

关键词： soils soil cycling

150t Fuchs竖式电弧炉的炉料配比对生产效率和产品质量的影响

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特殊钢 2010年第2期31卷 35-37页

作者：邹安华王新华北京科技大学冶金与生态工程学院北京100083 广州珠江钢铁有限责任公司广州510730

研究了珠钢150 t Fuchs竖式电弧炉的各种钢铁料及布料方式对电耗、冶炼周期和冶金质量的影响。结果表明,配料时必须参照生铁、海绵铁最大加入量、上下工序产能匹配、产品中残余元素的控制、冶炼指标等要求,在质量、成本、效率等方面寻... 详细信息

研究了珠钢150 t Fuchs竖式电弧炉的各种钢铁料及布料方式对电耗、冶炼周期和冶金质量的影响。结果表明,配料时必须参照生铁、海绵铁最大加入量、上下工序产能匹配、产品中残余元素的控制、冶炼指标等要求,在质量、成本、效率等方面寻求一合理的平衡点。为加速熔化,在第一篮料的下部适当多装一些生铁和/或较优质的废钢;在最后一篮料的上部装一些质量较好的废钢,下压轻薄废钢避免结团挂料,上部不可装入过多生铁,避免化清后碳太高而导致冶炼时间延长。

关键词：竖式电弧炉炉料配料布料

Minimum Exact Cover Problem of Group Key Distribution

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Wuhan University Journal of Natural Sciences 2009年第2期14卷 137-142页

作者： FU Xiong1,2, XU Shouzhi3 1. School of Law ,Wuhan University, Wuhan 430072, Hubei, China 2. Department of Technology, guangzhou Luogang District People’s Court, guangzhou 510730, Guangdong, China 3. College of Electronic Engineering and Information Technology, China Three Gorges University, Yichang 443002, Hubei, China School of Law Wuhan University Wuhan China Department of Technology Guangzhou Luogang District People’s Court Guangzhou China College of Electronic Engineering and Information Technology China Three Gorges University Yichang China

Secure group communications are restrained by the number of the group size, number of changes and their distribution, all existing works do not meet the commands of applications with large group size and high dynamic members. In this paper, minimum exact cover problem for group key distribution （GMECP） is presented, and a heuristic solution is testified. Then an algorithm of batch rekeying with renewing cost tending to zero is illustrated, which can process any large number of change requests with best security guaranteed. Efficiency analysis and simulation test show that the achievement can improve the efficiency of any tree-based group key management.

关键词： minimum exact cover problem group key distribution secure multicast group key management