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南极普通球粒陨石风化等级的重新厘定

岩石学报 2016年第1期32卷 71-76页

作者：尚颖丽李世杰王世杰李雄耀李阳中国科学院地球化学研究所月球与行星科学研究中心贵阳550002 中国科学院大学北京100049 中国科学院地球化学研究所环境地球化学国家重点实验室贵阳550002

在南极格罗夫山普通球粒陨石的风化等级划分中出现了和Wlotzka(1993)标准矛盾的现象。部分普通球粒陨石的金属和陨硫铁氧化不足20%,然而硅酸盐却发生了蚀变。如果考虑金属的氧化量,这种风化程度应为W1,如果考虑硅酸盐的蚀变,这种风化程... 详细信息

在南极格罗夫山普通球粒陨石的风化等级划分中出现了和Wlotzka(1993)标准矛盾的现象。部分普通球粒陨石的金属和陨硫铁氧化不足20%,然而硅酸盐却发生了蚀变。如果考虑金属的氧化量,这种风化程度应为W1,如果考虑硅酸盐的蚀变,这种风化程度应为W5。对于存在如此大的差异本文给出了折衷的解决办法——对金属和硅酸盐同时进行风化等级划分。金属的风化等级划分为W_m0-W_m4五个,硅酸盐风化等级划分为W_s0-W_s3四个。依据新方案,GRV 021588、021636、021772和021957等4块无法用Wlotzka(1993)标准来确定风化等级的陨石的风化等级均为W_m1-W_s1。而陨石GRV 023312的风化等级为W_m3-W_s0,其相当于Wlotzka(1993)标准中的W3。

关键词：普通球粒陨石风化等级风化蚀变南极

Graphic Processor Unit Acceleration of Multi-exposure Image Fusion with Median Filter

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国际计算机前沿大会会议论文集 2020年第1期 591-601页

作者： shijie li Yuan Yuan Qiong li Xuchao Xie National University of Defense Technology ChangshaHunanChina

A fast Graphic Processor Unit(GPU)accelerate algorithm of multiexposure image fusion with median filter is presented in this *** proposed algorithm fuses images in YUV space instead of RGB space compared to traditional image fusion ***,in YUV space the brightness components and the chromatism components were weighted fused separately with median *** last the filtered images were transferred to RGB and merged to the final fusion *** the GPU acceleration part,three parallel methods were proposed,including sequence images concurrent execution,adjacent kernels merge,and parallel median filter techniques,to expand the concurrency of the algorithm on the GPU *** the experimental results,a 16–21 times speedup was obtained compared to the CPU implementation and up to 60 fps performance was achieved in a 1000*1000*6 multi-exposure sequence image fusion *** results in the experiment demonstrate the high efficiency and high availability of our proposed method.

关键词： GPU Image fusion Median filter Acceleration

Research on the AOD molten iron manufacture of ferritic stainless steel

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Baosteel Technical Research 2008年第2期2卷 60-64页

作者： Chi Hebing Shao shijie li Donggang Steelmaking Plant Stainless Steel Branch Baoshan Iron ＆ Steel Co. Ltd. Shanghai 200431 China

Based on the existing technology and equipment for stainless steel production, the smelting process of ferritic stainless steel in the argon-oxygen decarburization （AOD） furnace using blast furnace （BF）molten iron （after dephosphorization） and ferrochrome alloy is studied and discussed. In the new process,phosphorus and other harmful elements are reduced to a lower level （P≤0. 020% ） when smelting ferritic stainless steel. With this process,both production flexibility and efficiency are enhanced. As no electric furnace is used in the smelting, the production cost is lowered with a great deal of electric power saved, while the total yield of chromium is increased.

关键词： AOD molten iron ferritic stainless steel

Receptor-induced disintegration of supraprotein nanocarrier

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Receptor-induced disintegration of supraprotein nanocarrier

High energy efficient degradation of toluene using a novel double dielectric barrier discharge reactor

中国化学会第四届卟啉与酞菁学术研讨会

作者： shijie li Ke Zheng Mingdong Huang Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences College of Chemistry Fuzhou University

Proteins fold into globular shape due to the presence of hydrophobic core formed by its hydrophobic amino acids,while the polar amino acid bound outwards to ***,we report the preparation of supraprotein nanocarriers（SPNC）,where the hydrophobic core of a protein was used to carry hydrophobic cargo *** this method,the albumin protein（diameter 6.5 nm） was unfolded with a denaturant and a dehydrator,the exposed hydrophobic cores were loaded with cargoes,and then denaturant was removed,forming nanoparticles with diameter of 40 nm by self-assembly,which was named *** formed SPNC are held together by non-covalent interaction but were stable in aqueous and serum media.A urokinase receptor targeting protein was also made into SPNC together with a cytotoxic cargo *** SPNC showed higher intake and cytotoxicity to the receptor-expressing cancer cells in vitro and higher accumulation in receptor-expressing tumor tissue in vivo compared to the albumin *** interesting feature of this SPNC is that it disintegrated into smaller particles（7-8 nm） and released cargo in the presence of urokinase ***,this study demonstrates a novel technology to prepare SPNC with a unique property of receptor-responsive payload release.

关键词： supraprotein nanocarrier human serum albumin urokinase receptor disintegration cargo release

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High energy efficient degradation of toluene using a novel d...

Sedimentary Records and Environmental Analysis of the Ximencuo Lake in Northeast Qinghai-Tibet Plateau in the Past 1,700 Years

第二十五届大气污染防治技术研讨会

作者： shijie li Xin Yu Xiaoqing Dang School of Environment & Municipal Engineering Xi’an University of Architecture & Technology

A double dielectric barrier discharge (DDBD) reactor was established to decompose toluene with high energy *** in discharge characteristics including visual images,voltage-current waveforms,lissajous figures,and temperature variation,were determined between the DDBD and SDBD *** efficiency,mineralization rate,CO selectivity,and energy yield were used to evaluate the toluene abatement performance of the two *** to the SDBD reactor,the DDBD reactor exhibited more uniform and stable discharges due to a change in discharge *** addition,the DDBD reactor’s dissipated power and reactor temperature (including the gas,barrier and ground electrode) were significantly lower than those in the SDBD *** 22-24 kV,the DDBD reactor showed a higher toluene removal efficiency and mineralization rate,while at 14-16 k V,the SDBD reactor exhibited higher respective *** energy efficiency of the DDBD was 2.5-3 times that of the SDBD reactor,and the overall energy constant k of the DDBD reactor (1.47 mL/J) was significantly higher than that of the SDBD reactor (0.367 m L/J) as revealed by the kinetics ***,a plausible toluene degradation mechanism in the DDBD and SDBD reactors was proposed based on organic intermediates that formed during toluene decomposition.

关键词： toluene abatement discharge characteristics double dielectric barrier discharge non-thermal plasma energy efficiency

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Journal of Landscape Research 2016年第1期8卷 44-48页

作者： SHEN Defu li shijie JIANG Yongjian Tourism Department Ningde Normal University State Key Laboratory of Lakes and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences

Lake sediment is the recorder of historical climate fluctuation and basin environment change. This study collected the Ximencuo Lake sediment in source area of the Yellow River, analyzed organic matters and geochemical elements of the core, obtained nearly environment changes of the past 1,720 years. The results showed the environment evolution process of the 47-cm columnar core can be divided into four stages: below 32 cm(before 900 A.D.), corresponding to the cool and wet climate; 32–20 cm(900 A.D–1300 A.D.), corresponding to the warming temperature and decreasing precipitation; between 20–3.5 cm(1300–1900 A.D.), the stage is more consistent with the little Ice Age, and precipitation gradually reduced; 3.5–0 cm(since 1900 A.D.), this is the twentieth Century warming period with increasing temperature and reduced precipitation. Phosphorus content increased rapidly in the last 20 years, reflecting the continuously increasing human interventions, but before this period, the P content was low and stable, indicating the natural background of regional phosphorus content.

关键词： The Ximencuo Lake Sediment core Element geochemistry Environmental change

Studies on Nonlinear ZnS Interference Filters

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光电子·激光 1989年第2期 110-111页

作者： XieDa, Zhen-YanFei, li-shijie, Fan-jikang,Tang-jinFaDepartment of Optical EngneeringZheJiang University, HangZhou, ChinaKey Words: filter, Optical bistability

This paper present some experiments results of optical bistability of ZnS interference filters designed and fabricated in our laboratary at wavelength of Ar laser(514nm).The resuits show that the minimum switching power could be reduced to 7.5mW through optimization of filter structures with focused laser beam of 60um in diameter. The relative drift of switching power of less than 15% was observed for a duration of an hour. The uniform area,which is defined by the 10% fluctuation of switching power, could be 20×20 mm. The dependence of the performance in bistability on the modulating frequency and peak power has been studied experimental and theoretically with a modulator consisted of two polarizers. And it’s found that the higher modulating frequency or peak power could cause higher switching power. The experiments on the relationship of the switching power and the intensity of irradiance beam were also carried out with an acousto-optic modulator. Finally the experimental results of bistable switching by using two counter-propagating focused laser beams are represented.

关键词： ZnS Studies on Nonlinear ZnS Interference Filters

Characteristics of Seismic Damage of Buildings:Constraints from Tilt Photography Technology

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Earthquake Research in China 2020年第2期34卷 296-306页

作者： liU Jun SHUAI Xianghua HONG Zhonghua TAN Ming ZHAO Shuo YAO Yuan ZHANG Meng li shijie Guizhou Earthquake Agency Guiyang 550000China Earthquake Agency of Xinjiang Uygur Autonomous Region Urumqi 830011China China Earthquake Networks Center Beijing 100045China Shanghai Ocean University Shanghai 201306China

In this paper,the tilt photography data acquisition and three-dimensional modeling of the Tashkurgan MS5.5 earthquake in Xinjiang are conducted using the tilt photography system of the Rotor UAV. The three-dimensional model is used to interpret the earthquake damage on buildings in the mega-earthquake area in order to acquire different-level house damage in the Kuzirun village disaster area. In addition,the characteristics of seismic damage on typical buildings are analyzed. The results show that the main collapsed houses in the mega-earthquake area are sand-stone buildings,of which about 39% are sand-stone buildings. Several brick-wood buildings and brick-concrete buildings are seriously damaged,while the buildings with frame structures are mainly slightly damaged,and the houses near the macro-epicenter of the earthquake are all in good conditions. Three-dimensional tilt photography technology can vividly display the scene of earthquake disaster,and can provide significant demonstration in building damage degree together with detailed analysis of disaster situation.

关键词： Tashkurgan MS5.5 earthquake UAV technology Tilt photography Earthquake emergency Building damage

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基于极限车速的车辆稳定性控制研究

汽车工程 2018年第1期40卷 48-56页

作者：金辉李世杰北京理工大学机械与车辆学院北京100081

采用"魔术公式"轮胎模型,在Matlab/Simulink中搭建了8自由度车辆侧向动力学模型,绘制车辆质心侧偏角-质心侧偏角速度相平面图,并利用双线法划分相平面图稳定区域,结合车辆自身质心侧偏角相轨迹,计算得到车辆极限稳定车速。以极限车速作... 详细信息

采用"魔术公式"轮胎模型,在Matlab/Simulink中搭建了8自由度车辆侧向动力学模型,绘制车辆质心侧偏角-质心侧偏角速度相平面图,并利用双线法划分相平面图稳定区域,结合车辆自身质心侧偏角相轨迹,计算得到车辆极限稳定车速。以极限车速作为控制开关,设计基于质心侧偏角和横摆角速度的模糊控制器,提出了基于补偿横摆力矩的前后轮制动力矩比例分配控制策略,并在多种工况下进行了仿真与模拟驾驶实验。结果表明:利用极限车速作为控制开关设计的控制策略可有效提高车辆稳定性。

关键词：车辆动力学稳定性控制极限车速