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Fully Mechanized Mining Working Face Safety Management Evaluation Based on Grey Fuzzy Theory

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Fully Mechanized Mining Working Face Safety Management Evalu...

2.04安全科学与技术国际会议

作者： ZHANG Shichang1 & SUN Jianquan2.(1 Institute of Economics and Management Northeast university Shenyang 110004 Liaoning china) (2.Institute of Economics and Management Shandong university of science and technology Taian 2.1019 Shandong china)

In this paper, according to a systematic point of view, the system of assessment indices for the safety of fully mechanized mining working face based on human being, material, environment, and managem

关键词： safety evaluation fully mechanized mining face grey fuzzy comprehensive evaluation

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矿区生态环境质量预警方法研究

山东科技大学学报（自然科学版） 2011年第6期30卷 97-102页

作者：高建广杨静房孝敏山东科技大学资源与环境工程学院山东青岛266590 山东科技大学化学与环境工程学院山东青岛266590

从预警指标体系、预测模型、预警模型三个方面,系统研究了矿区生态环境质量的预警方法。构建了以矿区大气质量、矿区水环境质量、矿区噪声环境质量、矿区生态质量为一级指标的预警指标体系;运用灰色系统理论,建立了预警指标GM(1,1)灰色... 详细信息

从预警指标体系、预测模型、预警模型三个方面,系统研究了矿区生态环境质量的预警方法。构建了以矿区大气质量、矿区水环境质量、矿区噪声环境质量、矿区生态质量为一级指标的预警指标体系;运用灰色系统理论,建立了预警指标GM(1,1)灰色预测模型;在对预警指标进行无量纲化和赋权的基础上,建立了赋权综合预警模型。

关键词：矿区生态环境质量预警指标体系

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袋式除尘器所用滤料分析

特种橡胶制品 2004年第3期25卷 37-40页

作者：李志华青岛科技大学 687信箱青岛266042

分析了袋式除尘器所用滤料的过滤机理,介绍了常用滤料的结构及特点,提出了正确选择滤料的原则以及应考虑的各种因素,认为正确选择并合理使用滤料是延长使用寿命、保证高除尘效率的关键。

关键词：过滤滤料粉尘袋式除尘器

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双丝间接电弧氩弧焊的熔滴过渡形式

山东科技大学学报（自然科学版） 2011年第4期30卷 66-70页

作者：曹梅青邹增大张顺善曲仕尧山东科技大学材料科学与工程学院山东青岛266510 山东大学材料科学与工程学院山东济南250061

采用氙灯背光高速摄像系统及示波器对双丝间接电弧氩气保护焊的熔滴过渡进行了研究。结果表明:双丝间接电弧氩弧焊正、负极的熔滴过渡形式并不完全相同,根据正、负极熔滴过渡形式的不同组合将熔滴过渡分为大滴—大滴过渡,射滴—大滴过渡... 详细信息

采用氙灯背光高速摄像系统及示波器对双丝间接电弧氩气保护焊的熔滴过渡进行了研究。结果表明:双丝间接电弧氩弧焊正、负极的熔滴过渡形式并不完全相同,根据正、负极熔滴过渡形式的不同组合将熔滴过渡分为大滴—大滴过渡,射滴—大滴过渡,短路过渡,射滴—射滴过渡,射流—大滴过渡,射流—射滴过渡及射流过渡7种类型。在焊接过程中以射流过渡及射流—射滴过渡为主。双丝间接电弧氩弧焊主要靠电弧热量及熔滴携带热量熔化母材,熔滴过渡方向与电流流动方向不同,正、负两极熔滴同时过渡,两极的过渡频率、尺寸有所不同。

关键词：间接电弧熔滴过渡短路过渡过渡形式

Research on Quartz ceramic crucible Wastes Applied in Jewelry casting

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Research on Quartz Ceramic Crucible Wastes Applied in Jewelr...

2.11 IEEE International conference on Waste Recycling,Ecology and environment(IcWREE 2.11)

作者： Zhifan XU1 Yongheng ZHOU1* Shaoxing cHEN2.Keya SHEN2.chang cHAN2.1 School of Photo Electronic science and technology South {2. Normal university Guangzhou {2. 2.Jewelry Institute of Guangzhou Panyu Polytechnic Guangzhou {2.

The method of production of cristobalite was based on the use of quartz ceramic crucible wastes as the basic raw material. The gypsum casting material was prepared by mixing cristobalite powder, gypsum and silica powder. calorific properties were tested and the results showed that when the content of cristobalite was more than 50% , the gypsum casting material showed obvious cracks, which was removed into the air from resistance furnace at 600℃ after the baking process was over. The gypsum casting material showed better therma crack resistance, when 0.3 g glass fiber were added into per 100 g mixed powder, with the content of cristobalite controlled between 40%-30%. In 300-600℃, about 0.4% thermal expansion occurred which effectively compensated for the cooling contraction of jewelry alloy making the casting sample meet production needs.

关键词： quartz ceramic crucible cristobalite therma expansion jewelry casting

The Response of Nano Metamaterials and Effect on Perfect Lens

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The Response of Nano Metamaterials and Effect on Perfect Len...

2.07亚洲显示国际会议

作者： Yu Feng~(1 3) Jian Wu~2.Jian-Ping Song~1 Xing-Zhong Qian~3 Yan Pan~3 1 Department of Electronic science and technology Xi’an Jiaotong {2. Xi’an 710049 china 2.National Key Laboratory of Electromagnetic environment china Research Institute of Radiowave Propagation Beijing 102.06 china 3 college of science Information Engineering {2. Zhengzhou 450001 china

＜正＞In factual application of nano negative refractive index Metamaterials,the effects of shape change and optical printing precision on nano negative refractive index Metamaterials are very *** integration technique（FIT）was *** effect of shape change and optical printing precision on resonant frequency and pass band of negative refractive index material was ***-symmetry of split ring resonators has effect on resonant frequency and pass band be- cause of the coupling between wires and *** printing precision can accommodate the demand of perfect lens made of negative refractive index materials.

关键词： Nano Negative Refractive Index Metamaterial Perfect Lens Pass Band Optical Printing Precision

Preparation and structure of Fe3Al nanostructured intermetallics

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Preparation and structure of Fe3Al nanostructured intermetal...

International Symposium of Young Scholars on Mechanics and material Engineering for science and Experiments

作者： Hao chuncheng cui Zuolin Yin Yansheng Zhang Zhikun Research center for Nanostructured materials qingdao Institute of chemical {2. qingdao2.6042.china Department of materials Shandong university Jinan 2.0061 chinaShandong university Key Lab for liquid structure and Heredity of materials of Ministry of Education china Research center for Nanostructured materials Qingdao Institute of Chemical Technology Qingdao 266042 China Department of materials Shandong University Jinan 250061 China

ISBN: (纸本)1880132796

＜正＞ Nanostructured materials with average grain or other structural domain size below 100nm, have some properties different from and often superior to, those of conventional materials that have phase or grain structures on a coarse scale. In this paper nanostructured Fe3Al intermetallic compounds were produced by hydrogen arc plasma method. The TEM experiments show that the average grain size of the particles is about 40nm. Hardness of Fe3Al nano nanostructured intermetallic compounds treated by different ways was discussed.

关键词： Nanostructured intennetallic preparation structure hardness

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SJSZ-55锥形双螺杆挤出机螺杆的设计

上海塑料 2011年第3期39卷 35-38页

作者：王洪武青岛科技大学机电工程学院山东省高分子材料先进制造技术重点实验室山东青岛266061

锥形双螺杆挤出机是塑料加工的一种重要机型。对SJSZ-55锥形双螺杆挤出机的螺杆进行了设计,研究结果可以指导同类螺杆的设计。

关键词：锥形双螺杆挤出机螺杆设计

Isothermal crystallization Kinetics of Poly（Ethylene Terephthalate） Modified by calcium Lignosulfonate

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Isothermal Crystallization Kinetics of Poly（Ethylene Tereph...

2.11 IEEE International conference on Waste Recycling,Ecology and environment(IcWREE 2.11)

作者： Hanbing MA1 2. Xiuyun LI 1 2.Li YANG 1 2.Detian LIAO 1 Shaoliang XIE 1 1 State Key Laboratory cultivation Base for Nonmetal composites and Functional materials Mianyang 62.010 china 2.National Insulating material Engineering Research Sub-center Southwest university of science and technology Mianyang 62.010 china

In this study, the effect of Lignosulfonate（LS） skeleton presence on the isothermal crystallization speed of the Poly（ethylene terephthalate）（PET） molecular chains were investigated by using differential scanning calorimetry （DSc）. The isothermal crystallization kinetics of PET and modified PET were analyzed by the Avrami equation. The results indicated that the crystallization rate increased with the addition of LS but decreased with overmuch LS. The Arvami exponent decreasing along with the adding of LS suggested that the crystallization changed from two-dimensional disk-shaped growth to three-dimensional spherulite growth. In addition, the introduction of LS made it less sensitive to the crystallization temperature of the blends.

关键词： Poly(Ethylene Terephthalate) calcium Lignosulfonate Isothermal crystallization crystallization kinetics