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Conventionally, to obtain the negative permeability and negative refraction metamaterials, the split-ring resonator (SRR) and cut-wire-pair (CWP) were applied. However, the properties of these structuresare strongly dependent on the polarization of electromagnetic waves. In this report, we used a high symmetry structure –the so-called dish pair ...
8 trang | Chia sẻ: yendt2356 | Ngày: 27/11/2020 | Lượt xem: 438 | Lượt tải: 0
In order to comprehend how tide acts to Cangio bay, this study have developed a 2-D finite difference model to assess changes of water flow in Cangio bay under significant influence of tide, and the wet-and-dry scheme-based method is also designed and configured into proposed model to indicate clearly where waterlogged soils under fluctuation of...
7 trang | Chia sẻ: huongnt365 | Ngày: 27/11/2020 | Lượt xem: 474 | Lượt tải: 0
Reservoirs are one of the most efficient measures for developing and managing integrated water resources. They have become the most important facilities for increasing the reliability of water supply for various purposes such as agriculture, industry, human activities, and environmental requirements, and for reducing the vulnerability of water u...
6 trang | Chia sẻ: huongnt365 | Ngày: 27/11/2020 | Lượt xem: 480 | Lượt tải: 0
Ảnh hưởng của hàm lượng nhựa epoxy dian (DE) và poly(tetrahydrofuran) divinyl ete (DVE) tới phản ứng khâu mạch quang của hệ DE/DVE với chất khơi mào quang muối triarylsulfonium (TAS) đã được nghiên cứu thông qua phổ IR, sự biến đổi độ cứng tương đối và hàm gel. Kết quả cho thấy khi tăng hàm lượng DVE thì màng khâu mạch có độ cứng tương đối thấp...
9 trang | Chia sẻ: yendt2356 | Ngày: 27/11/2020 | Lượt xem: 420 | Lượt tải: 0
Shrimp farming model is developing very strongly in recent years in Mekong delta area. This model is highly profitable but requires high investment, operating costs and the high demands on water quality. Currently, salt water, freshwater are from canals (level 1, 2) and ground water sources. They are not guaranteed for quantity and quality. Thi...
9 trang | Chia sẻ: huongnt365 | Ngày: 27/11/2020 | Lượt xem: 471 | Lượt tải: 0
Althought cashew is usually planted in dry areas and poor fertiliser, cashew nut yeild significantly increased by application of appropriate irrigation. In addition, technology of water-saving irrigation pointed out that products of cashew nut increased 8-22% as compared to traditional irrigation. However, effect of applying water-saving irrigat...
7 trang | Chia sẻ: huongnt365 | Ngày: 27/11/2020 | Lượt xem: 432 | Lượt tải: 0
Hair simulation is an important task in the virtual human simulation system, during hair simulation, not only the time required to ensure that there are also required to express the physical characteristics, chemical such as hair styles, colors, curves, twists, parting one’s hair and hair swirl, . and improving the quality of simulation. This p...
14 trang | Chia sẻ: yendt2356 | Ngày: 27/11/2020 | Lượt xem: 409 | Lượt tải: 0
Water supply system in Ho Chi Minh City has been built for a longtime with large water pipes and prolonged, difficulty in ensuring water supply and pressure on the system. The pressure in head system very high led to major water losses. By contrast, in the end of system, the pressure is too low. Currently, the water supply system in Ho Chi Minh ...
7 trang | Chia sẻ: huongnt365 | Ngày: 27/11/2020 | Lượt xem: 447 | Lượt tải: 0
Water has an indispensable role for almost all functions of an ecosystem. Water is also one of most critical resources needed to support the socioeconomic development of human society. Thus, sustainable water resource management has been on the priority list of many national agendas. Water resource vulnerability assessment serves as a guide supp...
7 trang | Chia sẻ: huongnt365 | Ngày: 27/11/2020 | Lượt xem: 530 | Lượt tải: 0
Along the coastal area in the west of Go Cong (Tien Giang Province), the mangrove system has played an important role to not only reduce wind and swell waves but also protect the beach and the seadikes. However, in recent decade, this mangrove system is seriously degraded. It leads shoreline areas to be vulnerable. The process of shoreline erosi...
9 trang | Chia sẻ: huongnt365 | Ngày: 27/11/2020 | Lượt xem: 426 | Lượt tải: 0