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Airborne space laser communication system and Experiments

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Airborne space laser communication system and Experiments

Primary mirror back surface shape research of GEO laser communication system

国防光电子论坛空间光信息与组网技术及应用研讨会

作者： LIXiao-ming zhangli-zhong MENGLi-xin National and Local Joint Engineering Research Center of Space Optoelectronics Technology of CUST School of photoelectric engineering Changchun University of science and technology

Airborne space laser communication is characterized by its high speed, anti-electromagnetic interference, security, easy to assign. It has broad application in the areas of integrated space-ground communication networking, military communication, anti-electromagnetic communication. This paper introduce the component and APT system of the airborne laser communication system design by Changchun university of science and technology base on characteristic of airborne laser communication and Y12 plan, especially introduce the high communication speed and long distance communication experiment of the system that among two Y12 plans. In the experiment got the aim that the max communication distance 144 Km, error 97%, average capture time 20 s. The experiment proving the adaptability of the APT and the high speed long distance communication.

关键词： laser communication plan platform APT

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Primary mirror back surface shape research of GEO laser comm...

A Study on Bioactivity of Corn Peptides with Low Molecular Weight(Ⅰ)Effect of an Intake of them on Alcohol Metabolism in Rats

国防光电子论坛空间光信息与组网技术及应用研讨会

作者： LiuWei-da zhangli-zhong MENGLi-xin Mechanical and Electronic Department of Changchun University of Science and Technology The center of national and local combination of optical-electrical technology of Changchun University of Science and Technology

The research of laser communication system primary mirror deformationcaused by back surface shape variation was done in this paper. The usual mirror back surface shapes were sphere, double arch, flat and biconcave shape and so on. Based on the four shape mirror, with the center hole rim support pattern, the four shape mirror temperature distribution equation was inferred by thermal elastic theory, deformation are compared in 1-5℃ radius direction temperature difference, in the case of minor weight gap and equal maximum *** a result, the deformation of sphere back surface shape mirror is minimal. So sphere back surface shape is fit for the primary mirror.

关键词： primary mirror back surface shape temperature difference

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Chemical Research in Chinese Universities 2003年第2期19卷 180-182页

作者： XULi FEIXiao-fang zhangli-qiang ZHANGXue-zhong KeyLaboratoryforMolecularEnzymologyandEngineeringofMinistryofEducation JilinUniversitychangchun130023P.R.China CollegeofLifeSciences JilinUniversityChangchun130023P.R.China

This study aims at the effects of an intake of low molecular weight corn peptides(LMCPs) prepared from zein on alcohol metablism in rats. LMCPs(1.0 g/kg body weight) in 15% ethanol(10 mL/kg body weight) were given to Wister rats by intragastric gavage. The assay of blood ethanol was conducted by using the enzyme based assay kit. The amino acid analysis was made with an amino acid analyzer. The data of the animal experiments showed that LMCPs could accelerate the metabolism of alcohol in rats. In the control group, the blood ethanol concentration reached the maximum level of (827.0±77.3) mg/L after ethanol loading for 30 min, then gradually decreased. In contrast, the blood ethanol concentration only reached (527.25±47.0) mg/L after 30 min in the group of LMCPs taken. These results indicate that LMCPs could decrease ethanol concentration in blood rapidly.

关键词： Small corn peptides Zein Alcohol metabolism

Phosphorus Nutrient Characteristics of Different Maize (Zea mays L.) Inbreds for Tolerance to Low-P Stress

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Agricultural Sciences in China 2005年第4期4卷 281-287页

作者： zhangli-mei HELi-yuan LIJian-sheng XUShang-zhong CollegeofResourceandEnvironment HuazhongAgriculturalUniversityWuhan430070P.R.China CollegeofAgronomyandBiotechnology ChinaAgriculturalUniversityBeijing100094P.R.China CollegeofPlantScienceandTechnology HuazhongAgriculturalUniversityWuhan430070P.R.China

Phosphorus nutrient characteristics of different maize inbred lines to low-P stress were studied at stages of seedling, steming, earing, silking under pot culture. In the periods of seedling and steming, P uptake efficiency was the main contributor to P tolerance, and the relative P content in P-tolerant genotypes, 99180 and 99239 were higher than that in sensitive genotype, 99152. At earing stage, P-tolerant genotypes, compared to P-sensitive ones, had higher accumulation of P in upper leaves. When came to the silking stage, P uptake and redistribution efficiency of P-tolerant genotypes were higher than those in 99152. The results also suggested that there are different mechanisms of P nutrient uptake and distribution in different P-tolerant genotypes. Inbred line 99239, according to the investigation, was considered as an efficient stock in the P-uptake while 99180 fallen to the efficient stock of P redistribution.

关键词： Maize Genotypes Tolerance to low-P stress Nutrient characters

罗格列酮诱导人胃癌MGC803细胞凋亡及其对bax和Bcl-2表达的影响

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中华肿瘤防治杂志 2006年第20期13卷 1541-1544页

作者：朱理辉张琍钟大志南华大学附属第二医院消化内科湖南衡阳421001

目的:探讨罗格列酮对人胃癌MGC803细胞凋亡的影响及其分子机制。方法:吖啶橙(AO)荧光染色和流式细胞仪分析检测细胞凋亡。同时行bax和bcl-2细胞免疫化学染色和定量分析。结果:罗格列酮能诱导MGC803细胞凋亡,且随着浓度增加,其凋亡率逐... 详细信息

目的:探讨罗格列酮对人胃癌MGC803细胞凋亡的影响及其分子机制。方法:吖啶橙(AO)荧光染色和流式细胞仪分析检测细胞凋亡。同时行bax和bcl-2细胞免疫化学染色和定量分析。结果:罗格列酮能诱导MGC803细胞凋亡,且随着浓度增加,其凋亡率逐渐增加。罗格列酮(25μmol/L、50μmol/L)作用于人胃癌MGC803细胞48h后bax表达的光密度值由0·10±0·02分别升至0·42±0·03、0·75±0·04,P=0·000;bcl-2表达的光密度值由0·51±0·02分别降至0·25±0·04、0·12±0·01,P=0·001。结论:罗格列酮能诱导人胃癌MGC803凋亡,其机制可能与bax基因表达上调、bcl-2基因表达下调有关。

关键词：胃肿瘤/病理学噻唑烷二酮类/药理学细胞凋亡/药物作用肿瘤细胞培养的基因表达

黔西六盘水煤田大河边向斜龙潭组煤系页岩微观孔隙特征及其影响因素

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天然气地球科学 2024年第7期35卷 1236-1248页

作者：赵凌云吴章利钟毅夏鹏魏元龙刘杰刚王科陈世万复杂构造区非常规天然气评价与开发自然资源部重点实验室贵州贵阳550081 贵州省油气勘查开发工程研究院贵州贵阳550081 贵州大学资源与环境工程学院贵州贵阳550025 喀斯特地质资源与环境教育部重点实验室贵州贵阳550025 贵州民族大学生态环境工程学院贵州贵阳550025

黔西地区龙潭组煤系页岩厚度大、有机质丰度高、含气性好,是中国南方重要的页岩气勘探目标层位。以区内大河边向斜龙潭组煤系页岩全岩样品和干酪根样品为例,开展场发射扫描电镜、气体吸附、XRD矿物成分分析、TOC含量测定及显微组分分析... 详细信息

黔西地区龙潭组煤系页岩厚度大、有机质丰度高、含气性好,是中国南方重要的页岩气勘探目标层位。以区内大河边向斜龙潭组煤系页岩全岩样品和干酪根样品为例,开展场发射扫描电镜、气体吸附、XRD矿物成分分析、TOC含量测定及显微组分分析等实验,讨论了中低成熟度煤系页岩孔隙发育特征及其主控因素。结果表明:该页岩为低成熟—中成熟页岩(镜质体反射率为0.68%~0.95%),孔隙类型有无机孔、有机孔和微裂缝,其中无机孔主要包括粒间孔、晶间孔、粒内孔和溶蚀孔,有机孔包括气孔和残余胞腔孔,微裂缝主要包括构造缝、有机质演化异常压力缝、成岩收缩缝和贴粒缝。全岩样品孔体积介于0.0046~0.0397 cm^(3)/g之间,干酪根样品孔体积介于0.0165~0.1020 cm^(3)/g之间,页岩中干酪根对孔隙的贡献率大于矿物。黏土矿物、方解石、有机质丰度和成熟度等对页岩总孔隙体积影响较大,黏土矿物含量、有机质成熟度与页岩孔隙体积呈显著正相关;方解石含量、TOC含量与页岩孔隙体积呈显著负相关。有机质的存在会充填微裂隙以及中孔、大孔,低成熟—中成熟阶段是干酪根大量裂解生成油气的阶段,同时产生大量有机孔。黏土矿物和有机质成熟度导致页岩孔隙分形维数增大,孔隙结构复杂程度增加,TOC含量导致页岩孔隙分形维数减小,孔隙结构复杂性降低。

关键词：上扬子地区低熟页岩煤系页岩有机质孔隙结构分形维数

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医用自动多叶光栅控制系统的设计与实现

计算机测量与控制 2005年第7期13卷 701-703页

作者：钟睿李尚柏唐章利郑高群四川大学原子核科学技术研究所辐射物理及技术教育部重点实验四川成都610064

简述了医学辐射治疗用自动多叶光栅控制系统的设计与实现。说明其结构和工作原理,重点讨论了如何使用单片机实现对直流电机的控制,以及使用模糊控制算法实现对电机运转精度的控制。该控制系统在国产设备上运行效果良好,精度完全达到设... 详细信息

简述了医学辐射治疗用自动多叶光栅控制系统的设计与实现。说明其结构和工作原理,重点讨论了如何使用单片机实现对直流电机的控制,以及使用模糊控制算法实现对电机运转精度的控制。该控制系统在国产设备上运行效果良好,精度完全达到设计要求。

关键词：多叶光栅单片机直流电机模糊控制

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硫化胶粉与脱硫胶粉改性沥青性能研究

特种橡胶制品 2014年第5期35卷 20-24页

作者：胡吉良杜丹超李晓林郑广宇孙忠武张立群北京化工大学有机无机复合材料国家重点实验室北京100029

对比分析了硫化胶粉和脱硫胶粉微观结构及其改性沥青基本路用性能,研究了硫化胶粉和脱硫胶粉在改性沥青过程中表现出的共性与差异及其原因。结果表明,加入硫化胶粉与脱硫胶粉,均能提高沥青基本路用性能,相同目数下,脱硫胶粉较硫化胶粉... 详细信息

对比分析了硫化胶粉和脱硫胶粉微观结构及其改性沥青基本路用性能,研究了硫化胶粉和脱硫胶粉在改性沥青过程中表现出的共性与差异及其原因。结果表明,加入硫化胶粉与脱硫胶粉,均能提高沥青基本路用性能,相同目数下,脱硫胶粉较硫化胶粉交联密度低,表面粗糙,表面极性增加,脱硫胶粉与沥青具有更好的相容性和稳定性,一定掺量下,硫化胶粉能赋予沥青更好的高温稳定性,脱硫胶粉能显著提高沥青低温延度,界面作用及胶粉网络结构的形成对改性沥青路用性能有重大影响。

关键词：硫化胶粉脱硫胶粉微观结构改性沥青路用性能