应用计算机对公路工程建筑材料价格进行管理

公路工程建筑材料是公路基本建设必不可少的物资基础，是公路工程产品的重要组成部分，一般材料费占公路工程总造价的60％左右，可见公路工程建筑材料价格管理在公路工程建设管理中占有相当重要的地位，对公路工程造价也有着十分重要的影响。因此，客观的、实事求是地确定材料价格是十分必要的。     

热拌沥青混凝土路面施工质量控制

集料的破碎面因现在已不再采用卵石，因此一般不成问题。而集料与沥青的粘附性在选材时应进行试验保证达到5级。保证在雨水或荷载作用下变形小，增强抗车辙能力。     

出口贸易大国转向出口贸易强国的战略性思考

本文主要阐述了我国对外贸易在由出口贸易大国转变为出口贸易强国的过程中,所应进行的调整出口贸易结构方面的战略思考.文中分析了我国对外贸易在国际贸易中的地位、出口商品结构存在的问题,探究了调整出口贸易结构的内容及调整方向.     

油酸基咪唑啉类缓蚀剂的缓蚀性能研究

以油酸与羟乙基乙二胺为原料，采用两步脱水法合成了油酸基咪唑啉，通过烷基化反应合成了多种咪唑啉衍生物．用IR、静态失重、极化曲线、SEM检测方法考察合成缓蚀剂的缓蚀性能．研究结果表明：油酸与羟乙基乙二胺经150℃和200℃两次脱水反应，可成功合成油酸基环状咪唑啉；当油酸与羟乙基乙二胺摩尔比高于1：1．2时，获得的缓蚀剂在加入量很小的情况下，缓蚀率就可达到90％以上；此外溶液的pH、缓蚀剂用量对缓蚀剂的缓蚀性能也均有影响．     

Two-Phase Algorithm for Multi-warehouse and Multi-task Based Logistics Delivery

To a scaled logistic company, assigning is an important part of logistic, and further development will make the optimized assigning of multi-warehouse and multi-task possible. This paper provided a two-phase multiwarehouse and multi-task based algorithm which has two phases. In the first phase, it combines sweep algorithm,saving algorithm and virtual task point to present a method. And in the second phase it provides an algorithm for the arrangement of goods loading which is based on the constraints of time-window and attributes of goods and vehicle. It uses the computing results of the first phase to form more detailed delivery scheme based on the constraints of time-window and attributes of vehicle and goods.     

White Layer of Hard Turned Surface by Sharp CBN Tool

IntroductionHard turning has been recognized as one of themost competitive clean machining technologies inreplacing of abrasive-based processes, with the de-velopment of high precision numerical machinetools and super-hardness tool material such as ce-ramic, CBN/PCBN (Cubic Boron Nitride/Poly-crystalline Cubic Boron Nitride)[1,2]. Hard turningoperation has shown geometrical flexibility, eco-nomics advantage, environmental friendliness, andsuperior surface integrity which is usually define…     

Nano-surface Engineering for Remanufacturing Application

IntroductionWith the rapid development of the world econ-omy, the quantity of waste machinery and elec-tronic products (WMEPs) is increasing at astartling speed. Consequently, the problems of de-stroyed ecological environment, environmental pol-lution, and resource waste have appeared promi-nently. According to the announced statistics morethan 70% discharge that results in the world envi-ronment pollution comes from the manufacturingindustry. 55 hundred million harmless wastes and7 hundred …     

CHONDROCYTE APOPTOSIS IN ARTICULAR CARTILAGE WITH KASHIN-BECK DISEASE

Kashin BeckDisease(KBD)isachronic,en demicosteoarthritisaffectingover0.81millionspa tientsand101millionsofpeopleatriskinChina[1]. Thebasicpathologicalfeaturesofthediseaseis chondrocytesdegenerationandnecrosisinthedeep zoneofarticularcartilageandgrowthpl…     

混凝土桥梁裂缝成因综述

从荷载、温度、收缩、基础变形、钢筋锈蚀、冻胀和施工等方面详细论述了混凝土桥梁裂缝的成因和防治措施,为方便设计、施工中找出控制裂缝的可行办法,提供了一定的参考。     

水泥稳定砂砾基层施工质量控制

水泥稳定砂砾基层是半刚性基层,具有较好的整体性,水、温稳定性好,还有较好的承受反复荷载作用的能力,尤其能减少收缩裂缝。结合绥满公路工程的实践,具体对水泥稳定砂砾基层施工的质量指标进行了分析,进而提出了进行质量控制的有效措施。