摘要：The construction of the TGP has proceeded smoothly since its commencement of construction in 1994 and the construction quality is good in general. The construction proceeds in accordance with the master project schedule in preliminary design approved by the central government and the investment can be controlled within the total budget of the preliminary design. The Changjiang Water Resources Commission, taking charge of the general design jobs of the TGP, has consistently paid attention to the project quality in the first place and carried out large amount of investigation, design and scientific research work. This paper makes an overall summarization and presentation on important technical issues in the design, such as dam, powerhouse structure, permanent ship locks, ship lift, project safety monitoring, main river closure and the 2nd stage cofferdam, mechanical and electric design etc., and put forwards a lot of suggestions about optimizing design schemes and measures for smoothing away construction difficulties in accordance with construction progress.

摘要：Alaska has many construction design challenges due to permafrost. Due to either climate changes or human activities and development, permafrost often becomes unstable. Unstable soils can cause thaw settlement, frost jacking, or heaving. These can cause damage to infrastructure, increase maintenance costs, and decrease the life of construction projects. Kotzebue, Alaska, a remote village in the northwest arctic part of Alaska, is ideal for observing such permafrost effects on infrastructure. Three case studies of Kotzebue construction projects are reviewed here： the Front Loop Water Main Extension, which shows the importance of both passive and active freeze thaw protection for water service pipes and how to minimize differential movement between pipes and buildings; the Wastewater Lift Station Replacement, which describes methods for reducing thaw settlement in buildings over time when it is not feasible to prevent thaw settlement, and compares the benefits of frozen ground excavation over traditional excavation practices; and the Ted Stevens Way Rehabilitation, which discusses the effectiveness of 2001 best design practices for gravel road construction over tundra and permafrost, identifies their design and construction failures, and proposes future solutions.

摘要：This paper introduces the PKPM-BIM construction management platform and its applications in the construction security management. The PKPM-BIM platform is an integrated management system mainly developed for the contractors to implement the BIM-aided construction management. Application of BIM technology would bring many beneficial changes to the security management in construction.

摘要：In this article, the performance and applications of a Spiral Plate Heat Exchanger are demonstrated. Also, governing equation of heat transfer phenomena in such heat exchangers is discussed. Regarding the governing equations, a LAB-sized model of this type of heat exchanger was designed and constructed. Galvanized Iron sheets were used as the heat transfer surfaces. Two Galvanized Iron sheets were rolled together around a central core and, as a result, two separated channels were made. Also, a predesign simulation of the heat exchanger was done using the Fluent software to predict the performance of the heat exchanger. First the geometry was made using Gambit software environment then the model was analyzed through Fluent. Because of less fouling, easier cleaning and high heat transfer coefficient, Spiral Heat Exchanger is a good alternative to the other types of heat exchangers, especially when it’s going to handle high fouling flows or highly viscous fluids. Low fouling rate of the heat exchanger, reduces the need of cleaning and therefore the out of service will be decreased. In the constructed heat exchanger, Nusselt number increases as the mass flow rate increases. Average Nusselt number is about 100 that is very good.

摘要：Inspired by the constitution of things in the natural world,three-dimensional (3D)nanofiber scaffold/cells complex was constructed via the combination of electrospinning technology and origami *** nanofiber boxes prepared by origami provided a limited space for the layer-by-layer nanofiber films,and the human fetal osteoblasts (hFOBs)seeded on the both sides of the nanofiber films were expected to facilitate the bonding,of the adjacent nanofiber films through the secretion of extracellular ***,the hFOBs presented 3D distribution in the nanofiber scaffold,and they can stretch across the gaps between the adjacent nanofiber films,forming the cell layers and filling the whole 3D nanofiber ***,a 3D block composed of electrospun nanofiber scaffold and cells was obtained',which possesses potential applications in bone tissue ***,we also created 3D nanofiber structures that range from simple forms to intricate architectures via origami,indicating that the combination of electrospinning technology and origami techniques is a feasible method for the 3D construction of tissue engineering scaffolds.

摘要：Since modern ecology studies the relationships between living things and their environments,the philosophies correlating to it has become optimal preferences in evaluating disputes arising in economic,political,cultural,and even pedagogical *** study of this paper proclaims that ecology oriented college English classroom construction in China is conducive to stimulating the classroom vitalities,and ensuring the sustainable development of teaching order.

摘要：A complete English Paragraph consists of five parts:opening sentence,topic sentence,supporting sentences,concluding sentence(and sometimes transitional sentence).The paper explores the construction rules of paragraph and explains its implementation *** significance lies in that it is helpful to the teaching and study in some fields like reading comprehension,speaking and writing.

摘要：After the 26th Universiade,Shenzhen has been striving to build a balanced and harmonious translational eco-environment,and make Public Signs translation play a positive role in the construction of international city ***,Shenzhen has formed relative completed systems in beforehand prevention and subsequent punishment in public signs ***,there is also a long way to go to perfect the translation eco-environment construction.

摘要：Taking the grape theme sightseeing garden of Hebei Academy of Forestry Sciences for example,this article discusses the suitable edible and wine making cultivation varieties,vineyard frame and cultivation techniques in the grape theme sightseeing garden,from the perspective of planning and design. The garden landscape design and construction is integrated with sightseeing and garden visiting to highlight the theme of grape sightseeing garden,aimed at achieving purposes of sightseeing,picking,appreciating the beautiful scenery,and enjoying palatable food.

摘要：为确保燕山水库电站调压室竖井施工质量、缩短施工工期,经方案比选采用滑膜施工技术衬砌竖井,基于滑膜体荷载和爬杆(千斤顶)数量计算,设计了滑膜体各部件,并介绍了滑膜体材料及其配比、施工工艺流程、模体安装、混凝土浇筑、表面修整、养护、滑模模体拆除等施工方法,提出了施工中应注意的事项,分析了施工中出现的问题及采取的相应处理措施,可供类似工程参考。