低能耗高舒适度型医疗建筑设计探索——以解放军91医院为例

随着我国医疗事业的发展,医院的建筑规模和医疗设备都有了很大程度的改善,同时医院的能源消耗也在不断增加,如何降低医院建筑能耗的同时又能提高舒适度成为当今面临的重要问题。低能耗高舒适度型医疗建筑是“绿色环保”与“以人为本”的理念的综合体现。首先对低能耗高舒适度型医疗建筑的内涵与特征进行了论述,通过实例对低能耗高舒适度医疗建筑的设计策略进行探索,之后对其能耗和舒适度进行评价。     

能流图在洁净手术部空调设计中的应用

由于对室内环境的要求较高,医院洁净手术部的空调系统能耗比普通区域的空调系统大。为了简化能耗分析,提出一个新的技术经济评价指标——空调能效成本指标ECE,并将其与能流图融合,作为空调能耗的辅助分析工具。利用能流图和ECE分析了建筑布局、换气次数、风机风压、空气处理过程等对手术部空调能耗的影响。建议在设计阶段采用该简便方法对空调方案的能耗和能源费用进行必要的技术经济比较分析。     

嵌挤组装式混凝土砌块道路基层结构的试验应用

介绍了嵌挤组装式混凝土砌块道路基层结构的试验过程,论述了其道路组合设计方案及施工注意事项。嵌挤组装式混凝土砌块道路基层结构大幅度节约了施工时间,提高了工程质量。     

华东交通大学土建学院教学楼方案设计及改扩建规划

一、项目概况华东交通大学土建学院用地处于校园的南区华南路、华中路与华西路交汇的三角地带,用地内包括信息工程学院4#教学楼(计划拆除)、土建学院9#教学楼(与新教学大楼统筹规划设计)及樱花林一片。用地呈不规则三角形,面积约2.26万m2,地势较为平坦,仅     

轮载作用下沥青路面三维非线性有限元分析

在解析法基础上的多层弹性体系理论 ,是当前国内外广泛使用的描述沥青路面结构的力学模型 ,它有一些局限性 ,而用解析的方法难以建立起更一般的沥青路面结构的力学模型。以三维非线性有限元模型NAAPS为工具 ,对轮载作用下沥青路面的非线性响应进行了初步分析 ,得到了一些有意义的结论 ,说明了非线性分析在路面结构分析中的广泛前景     

沥青混凝土路面摊铺用料动态监控

文章以信阳至九里关高速公路沥青路面工程项目第2合同段沥青混凝土路面的施工为例。谈谈如何在确保路面面层质量的前提下，使用“用料核算表”动态地控制路面面层的用料数量。     

Ion acceleration at dipolarization fronts associated with the interchange instability in Earth’s magnetotail

Science China Technological Sciences - It has been confirmed that dipolarization fronts (DFs) are the result of the interchange instability in the Earth’s magnetotail. In this paper, we use a...     

Sterols from Mytilidae Show Anti-Aging and Neuroprotective Effects via Anti-Oxidative Activity

For screening anti-aging samples from marine natural products, K6001 yeast strain was employed as a bioassay system. The active mussel extract was separated to give an active sterol fraction (SF). SF was further purified, and four sterol compounds were obtained. Their structures were determined to be cholesterol (CHOL), brassicasterol, crinosterol, and 24-methylenecholesterol. All compounds showed similar anti-aging activity. To understand the action mechanism involved, anti-oxidative experiments, reactive oxygen species (ROS) assays, and malondialdehyde (MDA) tests were performed on the most abundant compound, CHOL. Results indicated that treatment with CHOL increases the survival rate of yeast under oxidative stress and decreases ROS and MDA levels. In addition, mutations of uth1, skn7, sod1, and sod2, which feature a K6001 background, were employed and the lifespans of the mutations were not affected by CHOL. These results demonstrate that CHOL exerts anti-aging effects via anti-oxidative stress. Based on the connection between neuroprotection and anti-aging, neuroprotective experiments were performed in PC12 cells. Paraquat was used to induce oxidative stress and the results showed that the CHOL and SF protect the PC12 cells from the injury induced by paraquat. In addition, these substance exhibited nerve growth factor (NGF) mimic activities again confirmed their neuroprotective function.     

Two micrometer fluorescence emission and energy transfer in Yb3+/Ho3+ co-doped lead silicate glass

Enhanced 2.0 μm and visible up-conversion emissions from Ho³⁺ via Yb³⁺ sensitization in lead silicate glasses have been obtained under the excitation of 980-nm laser diode. The possible energy transfer mechanism has been analyzed based on the photoemission spectroscopy and lifetime measurement. The lifetime of Ho³⁺: ⁵I₇ laser upper level has also been measured. Based on the absorption spectra, Judd–Ofelt parameters, spontaneous emission probability, the absorption, emission cross sections, and gain coefficients have been calculated and analyzed. The results indicate that the Yb³⁺/Ho³⁺ co-doped lead silicate glass has potential application in mid-infrared wavelengths.     

Properties and carbonization behavior of asphalt modified with the THF-soluble fraction of a coal liquefaction residue

This study focuses on the effects of the tetrahydrofuran-soluble fraction of direct coal liquefaction residue as a modifier to modify asphalt with formaldehyde. The properties and carbonization behavior of matrix asphalt and the modified asphalts were studied. The results indicate that the ductility properties of modified asphalts have been effectively improved. The morphology of modified asphalts without the addition of formaldehyde is a set of uniform distribution point, and it is converted from linear distribution to clustered distribution observed in fluorescence microscope images with the increase of the adding amount of formaldehyde.