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以开孔率为变量,分别对4根腹板开矩形孔口的蜂窝梁和蜂窝组合梁进行了抗剪试验。对比分析了两者的抗剪破坏特征,承载力及剪力-位移曲线。给出考虑楼板组合作用后蜂窝梁抗剪承载力的提高结果。结合修正后的有限元计算模型,对比研究不同开孔率、翼缘尺寸对矩形孔口蜂窝梁和蜂窝组合梁抗剪承载力的影响。对不同混凝土楼板尺寸影响下的矩形孔口蜂窝组合梁进行抗剪性能分析。结果表明:开孔率对矩形孔口蜂窝组合梁和蜂窝梁抗剪承载力影响较大;翼缘厚度对开孔率较小的矩形孔口蜂窝梁抗剪承载力有一定提高,对蜂窝组合梁影响较小。蜂窝组合梁中混凝土楼板提供主要抗剪贡献,能大幅提高矩形孔口蜂窝梁抗剪承载力,且有效防止矩形孔口处剪切变形。最后,给出了矩形孔口蜂窝组合梁抗剪承载力简化计算方法。

在有多用户干扰的情况下,为了提高多用户的循环前缀的卷积扩频码分多址（CS-CDMA/CP）系统的带宽效率,提出了一种迭代的部分多用户检测算法。文中用密度演进的分析方法阐明了干扰用户的检测质量对期望用户的影响。从分析可知,干扰用户检测的准确度是期望用户检测的根本。文中采用扩大检测窗或放弃一些检测很差的干扰用户的迭代检测的方法对部分迭代多用户检测进行了改进,改进后的算法能够在系统性能和检测器的复杂度之间进行更好地折中。

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Evaluation & Analysis of Drug-Use in Hospitals of China is the property of Evaluation & Analysis of Drug-Use in Hospitals of China Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mechanical & Electronic Control Engineering is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arid Land Geography is the property of Chinese Academy of Sciences, Xinjiang Institute of Ecology & Geography and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Mine Automation is the property of Industry & Mine Automation Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Railway Signalling & Communication Engineering is the property of Railway Signalling & Communication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Originated from the Engineering Institute of National Central Academy in 1928, Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS) is one of the first 15 research institutions established by the Chinese Academy of Sciences. As one of the main forces during the past 75 years since the founding of the Chinese Academy of Sciences, the growth of SICCAS has engraved the deep imprint of the Chinese Academy of Sciences, and has embarked on a distinctive development path. On the basis of reviewing the development history of SICCAS in the past century, this study explores the internal development driving force of the institute as a national strategic scientific and technological strength on the road of creating materials for the country, and sorts out the formation of the institute's innovation culture, innovation ecology, and innovation environment, in order to provide insights for accelerating the seizing of the commanding heights of science and technology, realizing China's self-reliance and self-improvement in science and technology, and developing China's scientific and technological strength at a faster pace. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Mine Automation is the property of Industry & Mine Automation Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The rural micro-energy-grid with electricity-heating-cooling-gas was a hot issue in the field of energy. Most researches have been done on the modeling, planning and operation of micro-energy-grid. But the planning evaluation system of rural micro-energy-grid is still lacking. To evaluate the planning performance on rural micro-energy-grid, the planning evaluation system of rural micro-energy-grid was established in this study. The planning evaluation system contained four primary indicators, seven secondary indicators and fourteen tertiary indicators. Specifically, the four primary indicators were the reliability, economics, environmental protection and benefit. The seven secondary indicators were the electrical reliability, heat and cool reliability, system economics, environmental protection of energy-supply equipment, environmental protection of energy-storage equipment, stable benefit, environmental benefit. The fourteen tertiary indicators were the electrical deficiency rate, heat deficiency rate, cool deficiency rate, initial investment cost, maintenance cost, ratio of price to available life on the equipment, pollutant emission, installation rate of renewable energy, installation rate of heating-cooling-electricity for supply unit, replacement cycle rate of battery storage, replacement cycle rate of cool storage, replacement cycle rate of heat storage, electrical power exchange cost with distribution network, environmental pollution penalty cost. The formula of each indicator were given for these 25 parameters. The weight of each evaluation indicator was solved using an entropy method, indicating a flow chart for the implementation. The weight distributions of these indicators were obtained in the micro-energy-grid, representing the evaluation value of each planning scheme. In the actual planning process of a project, it was usually focused on small parts of the indicators, depending on the environmental condition, funding and the needs of the project. It was not possible to select the whole planning scheme fully complying with these 25 indicators in the actual evaluation. Therefore, an expert evaluation method was also establish to show the weight table of expert evaluation indicators. The new weight/ values of the different indicators in the planning schemes were obtained combining the entropy and the expert evaluation method, as well the new evaluation values of the whole planning schemes on the rural micro-energy-grid. Three planning schemes of a village in the western China were selected as a case study to verify the proposed planning indicators in this paper. The loading data of the heating-cooling-electricity in four seasons was given before the simulation, as well the time-of-use electrical price and equipment parameters of the rural micro-energy-grid. The results showed that the evaluation values of the scheme 1, 2 and 3 were 1.32, 1.14 and 2.47, respectively,according to entropy method. In the scheme 2,there was the minimums in the installed rate of renewable energy and heating-cooling-electricity supply unit, whereas in the scheme 3, the maximums considering all the evaluation indicators were the reliability, economics, environmental protection and benefit. Therefore, the expert system 1, 2, 3 and 4 focused on the reliability, economics, environmental protection and benefit, respectively. The whole planning schemes of the rural micro-energy-grid were also re-evaluated by combining the method of expert evaluation and entropy. The comprehensive evaluation value of scheme 2 has the highest value because the expert system 3 focused on the environmental protection indicators. In experts 1, 2 and 4, the comprehensive evaluation value of scheme 3 has the highest value. If the project need is the reliability, economics and benefit, scheme 3 can be the best choice. The findings demonstrated that the propose devaluation system can efficiently evaluate the planning scheme of the micro-energy-grid, and provide an insightful applied guidance for the construction and planning of micro-energy-grid in rural areas. [ABSTRACT FROM AUTHOR]

目的 观察胃癌患者血清 miR-7、miR-204 表达变化,并探讨其与临床病理特征及预后的关系. 方法 选择95例胃癌患者(病例组)及 95 例体检健康者(对照组),采用实时定量 PCR 检测两组血清 miR-7、miR-204, 分析胃癌患者血清 miR-7、miR-204 表达与临床病理特征的关系, Kaplan-Meier 生存曲线评估血清 miR-7、miR-204 表达与患者术后5年总生存率的关系, Cox 回归模型分析胃癌患者预后的影响因素.结果 病例组血清miR-7、miR-204 相对表达量均较对照组低( P均<0.05). 胃癌患者血清 miR-7 表达与淋巴结转移有关(P均<0.05), 血清 miR-204 表达与淋巴结转移、肿瘤分化程度及TNM分期有关 (P均<0.05). Kaplan-Meier 生存分析表明, miR-7 低表达、miR-204 低表达者术后 5 年总生存率均分别低于 miR-7高表达、miR-204 高表达者 (P均<0.05). Cox 回归模型多因素分析结果表明, 淋巴结转移、较高的 TNM 分期、血清 miR-7 低表达、血清 miR-204 低表达是影响胃癌患者预后的危险因素 (P均<0.05). 结论 胃癌患者血清 miR-7、miR-204 表达降低,与患者的部分临床病理参数和预后有关, 监测患者血清 miR-7、miR-204 表达可能有利于患者的预后判断. [ABSTRACT FROM AUTHOR]