重庆“江南万亿工业走廊”城市节点等级分布研究

根据点轴开发理论,借助多元统计分析方法,对"江南万亿工业走廊"城市节点的等级空间分布进行分析,得到该城市群的节点等级体系:一级节点(发达型城市)为万州区和涪陵区,二级节点(中等型城市)为巴南区和长寿区,三级节点(发展型城市)包括忠县、丰都、奉节、云阳、石柱和巫山。应在此基础上科学规划空间布局,构建网络化基础设施体系,加快集群工业发展,加速资源要素集聚,加强区域间协同合作,实现有效的点轴系统开发。     

论社会中间层组织的经济法权利

社会中间层组织是一种特殊的经济法主体,以其特殊的劳动参加着我国社会主义社会财富的创造,应该受经济法调整,享有经济法权利,但是我国现有的法律法规对社会中间层组织的法律权利规定并不完善,因而我国应该尽快完善这方面的立法,为发挥社会中间层组织的最大效用提供法律保障。     

肌肽复合物、新剂型碳酸氢钠补充对人体无氧运动能力及代谢的影响

研究目的:探讨肌肽复合物和新剂型碳酸氢钠的补充对人体无氧运动能力和代谢的影响。研究方法:将驻京某部队27名男性士兵随机分为3组(对照组、肌肽复合物组、碳酸氢钠组),每组9人。所有受试者均完成一次基础测试(不服用任何产品)和1周后的实验测试。研究结果:(1)肌肽复合物组、碳酸氢钠组,平均功率明显高于对照组(p<0.05)。(2)肌肽复合物组、碳酸氢钠组运动后10min的血乳酸值明显高于对照组(p<0.05)。(3)运动后1h、2h的尿PH值,碳酸氢钠组明显高于对照组(p<0.05)。(4)运动后2h血清丙二醛(MDA)的水平与基础值比较,对照组与碳酸氢钠组均明显增高(p<0.05),而肌肽复合物组未出现明显变化。肌肽复合物组运动后血清谷胱甘肽过氧化物酶(GSH-Px)的水平明显高于对照组和碳酸氢钠组(p<0.05)。(5)运动后血尿酸的水平,肌肽复合物组明显低于对照组和碳酸氢钠组(p<0.05)。结论:补充肌肽复合物和碳酸氢钠可提高1min最大无氧运动能力、运动后10min的血乳酸值,此外肌肽复合物还具有抗氧化、降尿酸的功能。     

Crystal face dependent intrinsic wettability of metal oxide surfaces

Knowledge of intrinsic wettability at solid/liquid interfaces at the molecular level perspective is significant in understanding crucial progress in some fields, such as electrochemistry, molecular biology and earth science. It is generally believed that surface wettability is determined by the surface chemical component and surface topography. However, when taking molecular structures and interactions into consideration, many intriguing phenomena would enrich or even redress our understanding of surface wettability. From the perspective of interfacial water molecule structures, here, we discovered that the intrinsic wettability of crystal metal oxide is not only dependent on the chemical components but also critically dependent on the crystal faces. For example, the crystal face of α-Al₂O₃ is intrinsically hydrophobic with a water contact angle near 90°, while another three crystal faces are intrinsically hydrophilic with water contact angles <65°. Based on surface energy analysis, it is found that the total surface energy, polar component and Lewis base portion of the hydrophobic crystal face are all smaller than the other three hydrophilic crystal faces indicating that they have different surface states. DFT simulation further revealed that the adsorbed interfacial water molecules on each crystal face hold various orientations. Herein, the third crucial factor for surface wettability from the perspective of the molecular level is presented, that is the orientations of adsorbed interfacial water molecules apart from the macro-level chemical component and surface topography. This study may serve as a source of inspiration for improving wetting theoretical models and designing controllable wettability at the molecular/atomic level.     

控制器局域网的协议分析及应用

控制器局域网（CAN）是计算机控制局域网的代表之一。由于它的独特优点,正被越来越多的系统所采用。本文对控制器局域网的协议中所包括的敷据链路层和物理层进行了详细的分析,并且对控制器局域网应用节点进行了设计。     

中国交通干线风沙危害防治模式及应用

公路和铁路是重要的陆地交通基础设施。我国风沙地区交通干线风沙危害的防治一直是国民经济和社会发展中的大事。针对我国风沙环境特征,面向铁路、公路安全运营的需求,我国开展了大量的交通干线风沙危害试验研究和防治实践,在防沙材料、防沙措施、防沙体系、维护管理等方面进行了系统创新,创建了4种不同风沙环境地区交通干线风沙危害防治模式,并在包兰铁路、青藏铁路、塔里木沙漠公路、准噶尔沙漠明渠等工程中得到成功应用。中国的交通干线风沙危害防治技术成果在世界干旱沙区尤其是"一带一路"沿线区域具有广阔的应用前景。     

复合图书馆信息资源建设的三大策略

复合图书馆信息资源建设应采用印刷型信息资源与数字化信息资源互补、信息资源拥有与信息资源存取并重、实体馆藏信息资源与虚拟馆藏信息资源整合等策略。     

Recent progress in the study of transition in the hypersonic boundary layer

Turbulence is a universal form of fluid motion. It is the key issue in fluid mechanics. Very recently, it has become a bottleneck in some key engineering research of national importance, such as aeronautics, astronautics and navigation. Developed turbulence and the onset of turbulence, i.e. transition, are two interrelated parts of turbulence. The hypersonic boundary-layer transition is a strategic focus in the fluid mechanics community. This article reviews recent developments in the study of the hypersonic boundary-layer transition, research facilities and experimental techniques. The hypersonic quiet wind tunnel is introduced as a necessary device to obtain real flight data in near space. Near-wall measurement techniques, such as temperature-sensitive paint, near-wall particle image velocimetry and Rayleigh-scattering visualization, are shown. The most important issues in the recent development of the transition in the hypersonic boundary layer are addressed. The instability and nonlinear interaction of different instability modes are discussed. The recent contributions from China, especially at Peking University, are also introduced.     

阿嘎布里亚特方言和霍里布里亚特方言复合元音语音实验研究

布里亚特语有[ei]、[ i]、[vi]、[ui]复合元音等,从阿嘎布里亚特方言和霍里布里亚特方言复合元音的动态变化特征来看,阿嘎布里亚特方言[ei]、[ i]、[vi]、[ui]的起始元音开口度高,舍位前于霍里布里亚特方言相对应的复合元音。音长和音强的稳定段都相同。这对布里亚特语、蒙古语以及蒙古语族语的语音变化语音产生的规则研究有一定的参考价值。     

王道士流水疏沙与藏经洞的发现

本文通过考证,认为王道士《墓志》所记在"流水疏沙"过程中发现藏经洞的事或为信史,应有一定的可信度。