高速线切割机床上丝辅助装置设计

现有高速线切割机床的上丝装置在上丝过程中易发生断丝与张紧力不均衡现象,降低了机床切削稳定性和工件加工质量。通过分析现有装置的结构,提出增加推力球轴承,以防止锁紧螺母跟转而导致储丝盘卡顿引起断丝;根据丝线的拉力计算出弹簧压缩量及其他相关参数。经I-DEAS软件建模、装配、仿真表明,该装置可以满足生产要求。

自动上丝机构的研发

为解决采用吸枪进行手动上丝方式中存在受工作环境及设备内部结构的影响较大,上丝过程比较繁琐,劳动强度大,上丝效率低等问题,研发出一种自动上丝机构,该机构由减速电机、链轮、链条、导丝环等组成。详细介绍了该自动上丝机构的结构及操作步骤,并对其特点和应用进行了分析。指出这种自动上丝机构结构简单,劳动强度低,上丝效率高,不受环境影响,应用场合广泛;在实际使用过程中,能够很好地满足使用要求。

中走丝线切割机床的上丝机构设计

针对中走丝线切割机床上丝过程中出现电极丝断丝、张紧力不均衡和大小不可调问题,设计了一种用于上丝的机构,将上丝与紧丝合二为一,提高上丝效率并均衡了电极丝的张紧力,提高了加工过程中机床的切削稳定性。结果表明:上丝效率提高60%以上,零件加工质量显著提高。

绷丝机上丝装置的自动控制

介绍了绷丝机上丝装置的一种自动控制系统,实践证明它结构简单、准确率高。

熔融玄武岩抽丝连续自动上丝装置设计与试验

针对连续玄武岩纤维上丝需求,传统人工作业的方式,存在劳动强度大、危险性高等问题,研究设计一种自动上丝装置,对取丝模块的生头结构和绕丝模块的螺旋运动轨迹等参数进行理论分析以及对控制模块进行集成化处理,为本装置集成了无线信号传输和手动触发按键两种启动模式。最后试制了连续玄武岩纤维自动上丝装置样机,进行自动上丝试验,实验结果表明,本装置可在10 s内完成理论运动轨迹,并能够实现对连续玄武岩纤维稳定上丝的功能。研究结果可为各类纤维自动上丝装置的研发提供理论依据。

改进高压汞灯工艺的若干问题

本文具体论述高压汞灯工艺改进的若干问题，包括自动芯柱机上丝机构的检测和控制，水涂粉 材料，自镇流高压汞灯铝丝钩钩改进三个方面。

自制两用钩针解决线切割加工中的两个问题

随着数控线切割机床在实习教学中的广泛应用,在快走丝线切割加工中存在着两个常见的问题:一个是下丝轮处的穿丝和上丝麻烦的问题;另一个是水嘴由于出水孔小而容易被电蚀污物堵塞的问题。而一款自制的两用钩针可方便地解决这两个问题。

Epithelial-to-mesenchymal and mesenchymal-to-epithelial transitions in the colon

Epithelial-to-mesenchymal and mesenchymal-to-epi- thelial transitions are well established biological events which have an important role in not just normal tissue and organ development, but in the pathogenesis of diseases. Increasing evidence has established their presence in the human colon during colorectal carcinogenesis and cancer invasion, chronic inflammation-related fibrosis and in the course of mucosal healing. A large body of evidence supports the role for transforming growth factor-13 and its downstream Smad signaling, the phosphatidylinositol 3＇-kinase/Akt/mTOR axis, the Ras-mitogen-activated protein kinase/Snail/Slug and FOXC2 pathway, and Hedgehog signaling and microR- NAs in the development of colorectal cancers via epi- thelial-to-mesenchymal transition. C-met and Frizzled-7, among others, seem to be the principle effectors of mesenchymal-to-epithelial transition, hence have a role not just in mucosal regeneration but in the progression of colonic wall fibrosis. Here we discuss a role for these pathways in the initiation and development of the transition events. A better understanding of their induction and regulation may lead to the identification of pathways and factors that could be potent therapeu- tic targets. The inhibition of epithelial-to-mesenchymal transition using mTOR kinase inhibitors targeting theATP binding pocket and which inhibit both mTORC1 and mTORC2, RNA aptamers or peptide mimetics, such as a Wnt5A-mimetic, may all be useful in both cancer treatment and delaying fibrosis, while the induction of mesenchymal-to-epithelial transition in induced pluripotent stem cells may enhance epithelial healing in the case of severe mucosal damage. The preliminary results of the current studies are promising, but more clinical investigations are needed to develop new and safe therapeutic strategies for diseases of the colon.

Bridging Civilizations From Asia to Europe： The Silk Road

Throughout history, Silk Road played an important role with connecting more than 50 countries between its endpoints. Reviving this ancient trade route is a contemporary discussion among politicians. There are many projects realized and proposed for the resurgence of the modem Silk Road, including the railroad project connecting Baku, Tiflis and Kars of Azerbaijan, Georgia, and Turkey; the undersea rail tunnel under the Bosphorus strait, Marmaray; the Silk Road Economic Belt proposed by China; and the Maritime Silk Road, again proposed by China. Just like the original Silk Road, it was not only a route for caravans or trade, but it was a meeting point for cultural, religious, and philosophical exchanges that served humanity for centuries; today＇s modem Silk Road initiatives should be considered as bridges between Eastern and Western civilizations that will serve the same purpose of its ancient predecessor. The revived Silk Road will facilitate strengthening of relationships in between countries that experienced harmony in history. The railways, transportation facilities, transnational gates, energy corridors, and natural gas pipelines that constitute the Silk Road will transform the region with improving its economy and bringing peace and economic prosperity. With recent developments, it witnesses the importance of geopolitical and historical ties in establishing contemporary alliances. Although there are great expectations with the revival of the modern Silk Road, authors would like to emphasize that it should be an agreement to foster shared interests rather than the interest of bigger partners.

Analysis of Dynamic Characteristics of the 21st Century Maritime Silk Road

The 21st century Maritime Silk Road(MSR) proposed by China strongly promotes the maritime industry. In this paper, we use wind and ocean wave datasets from 1979 to 2014 to analyze the spatial and temporal distributions of the wind speed, significant wave height(SWH), mean wave direction(MWD), and mean wave period(MWP) in the MSR. The analysis results indicate that the Luzon Strait and Gulf of Aden have the most obvious seasonal variations and that the central Indian Ocean is relatively stable. We analyzed the distributions of the maximum wind speed and SWH in the MSR over this 36-year period. The results show that the distribution of the monthly average frequency for SWH exceeds 4 m(huge waves) and that of the corresponding wind speed exceeds 13.9 ms^(-1)(high wind speed). The occurrence frequencies of huge waves and high winds in regions east of the Gulf of Aden are as high as 56% and 80%, respectively. We also assessed the wave and wind energies in different seasons. Based on our analyses, we propose a risk factor(RF) for determining navigation safety levels, based on the wind speed and SWH. We determine the spatial and temporal RF distributions for different seasons and analyze the corresponding impact on four major sea routes. Finally, we determine the spatial distribution of tropical cyclones from 2000 to 2015 and analyze the corresponding impact on the four sea routes. The analysis of the dynamic characteristics of the MSR provides references for ship navigation as well as ocean engineering.

Australia's Synergy with the“21st Century Maritime Silk Road”Initiative and Its Prospect

Australia's development and infrastructure plans have synergy with China's 21 st Century Maritime Silk Road initiative, and their political, economic, trade, financial and civil exchanges have deepened bilaterally. However, as the synergy of the development strategies meets challenges, China should stick to the principle of opening-up and inclusiveness to cope with the ups and downs coming up in the ChinaAustralia relationship so as to ensure Australia can contribute positively to the initiative.

The Nomocracy Pursuit of ＂the Maritime Silk Road＂--On Legal Guarantee of State＇s Marine Rights and Interests

＂The Maritime Silk Road＂, part of China＇s maritime power strategy, will safeguard the realization of ＂Chinese Dream＂. ＂The Maritime Silk Road＂ needs desperately legal guarantee of State＇s marine rights and interest. The primary target of this paper is to put forward several suggestions on the legal guarantee of maritime rights protection based on analyzing the present situation of China legal system.

China-Russia-India The BRICS Countries in Eurasia Are the Key Factors in the Construction of the Silk Road Economic Belt

China is the starting point and pioneer and driver of the Silk Road Economic Belt; Russia is located in the throat place of the belt; and India is at the joint of the belt and the Maritime Silk Road. China, Russia, and India as the BRICS countries are geo-connected, easy to reach a consensus because of their common and similar interests. The three countries also have common inherent demands and strategic directions： connectivity, complementarity, taking advantage of the great powers of Eurasia and sea-land compound, moving toward the grand trend of modern international economy and technology development. Promoting the construction of the Silk Road Economic Belt accords with their respective interests, and is their common interests, which decide that China, Russia, and India are the key factors and dominant forces in the construction of the belt.

Progress in Foreign Cooperation of China's Oil Industry

In 2015, China＇s oil companies＇ overseas equity oil has grown steadily to approximately 150 million tonnes. State-owned oil majors have turned from scale-oriented to profit-oriented by adjusting investment speed and optimizing portfolio to improve operating profit of overseas business. The overseas investment of private oil companies mainly focused on two fields： the first is to invest in countries along the Belt and Road （the Silk Road Economic Belt and the 21st-century Maritime Silk Road）, and the second is to enter the oil industry of the developed countries by M＆A. Limited progress has been made in ＆e foreign cooperation of domestic upstream sector, while new changes emerged in the foreign cooperation of upstream sector. Some planned projects were postponed or delayed due to domestic or international market changes. Private oil companies, however, began to cooperate with foreign companies in the downstream sector after the former got the right to import crude oil.

Research on Cooperation Mechanism of Guang Xi and ASEAN Under the 21st Century Marine Silk Road Strategy

In 2013 October, president Xi Jinping put forward China is willing to develop good marine partnership with ASEAN countries in twenty-first Century and will jointly build ＂marine silk road＂ on a visit to the ASEAN countries. In the aspect of marine tourism, Guangxi and ASEAN cooperation has a solid foundation. This paper first gives the concept of the Marine Silk Road, and then analyzes the Guangxi and ASEAN tourism cooperation mechanism of the line, implementation steps and conditions under the 21 century Marine Silk Road strategy in order to provide reference for the related workers.

Xu-Shi Yin’e:Friendship Envoy of the Maritime Silk Road

IN the coming years,construction of China＇s＂Belt and Road＂Initiatives,proposed by Chinese President Xi Jinping during his2013 tour of Central Asia,will proceed at full throttle.The aim is to revive the historic trade route;but in fact,the bond of the Silk Road was never really broken.Traces left by merchants from past centuries still remain in several places in China to this day.

The New Maritime Silk Road, A Historic Choice

THE concept of a 21st century Maritime Silk Road was initiated by Chinese President Xi Jinping during his visit to the ASEAN region in October 2013.President Xi proposed the strategy creatively,considering both the history of the region and its future against the current global climate.The New Maritime Silk Road and the New Silk Road Economic Belt together construct an important pillar of the Chinese dream of rejuvenating the nation. The idea of the New Maritime Silk Road has a profound historical background; but it is the optimum choice for the future.

The Rise of China in Central Asia： The New Silk Road Diplomacy

China＇s relationship with Central Asia has grown manifold since the foundation of Shanghai Five in 1996, which in June 2001 became the Shanghai Cooperation Organisation. The impetus to the relationship has further been accen- tuated when China-Russia friendship treaty was signed in July 2001. The US-led war in Afghanistan against Taliban and A1-Qaeda has yet again cemented Chinese position in Central Asia, and the recently concluded Belt and Road Initiative （BRI） has undeniably dramatically underscored the strategic value of Central Asia to the west and has opened up possibilities for Chinese security, political and economic interests. Geostrategically enmeshed with Central Asia, China will remain an integral and increasingly influential player in Central Asia. This research paper contextualises China＇s emergence and interests in Central Asia discarding the much talked about great game thesis and asserts by analysing the rise of China in the region as an unmatched and unchallenged power which has been testified once again with the recent BRI of Beijing.

Moving Further Closer

In 2013,Chinese President Xi Jinping proposed the building of the Silk Road Economic Belt and the 21st-Century Maritime Silk Road in hopes of connecting Asian,European and African countries more closely and promoting mutual y beneficial cooperation.