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Online since: July 2014
Authors: Xiao Fei Liu, Mei Li Zhang, Zhi Wei Ye
After the Three Gorges reservoir, Yichang hydrological station small runoff, the low flow rate increases year by year, sediment discharge and sediment concentration greatly reduced, suspended sediment median diameter taper, a large number of coarse grain sediment was blocked in the library district, reservoir discharge’s "clear water sand" is considered unsaturated sediment, therefore sandy pebble reach overall performance consistency erosion.
Online since: August 2011
Authors: Bin Wang, You Ping Ding, Jing Gao, Jin Fang Sun, Miao Miao Cui, Long Han
Introduction A lot of limestone powder has been produced during the production of concrete aggregate, which not only takes up a large number of arable lands, but also results in dust pollution and waste of resource when accumulated for a long time.
The mechanism of limestone powder in concrete mainly is micro-aggregate filling effect, micro-crystal nucleus effect and activity effect, whose activity effect is very low [12], basically ignored during 672 h; fine particles of limestone powder on the one hand fill in cement particles to improve grain composition of cementitious materials and increase the uniformity of particles and proportion of fine particles, on the other hand fill in the concrete pore to bring about interfacial structure and cement paste more compactly, improve concrete internal structure, stop cementitious materials from hydrating further, which reduce autogenous shrinkage of concrete playing micro-aggregate effect at the same time and the decreasing effect is more evident with the increase of fineness; limestone powder reduces nucleus formation potential barrier because of serving as the nucleus formation matrix of hydrated calcium silicate and plays micro-crystal nucleus effect to bring about accelerating the hydration
Online since: June 2014
Authors: Lian Cui, Zhong Yang Qiu, Zhi You Han, Rui Ying Li, Ji Xin Che
Experimentally, Mitoseriu et al. [6] studied the polarization reversal properties of BaTiO3 ferroelectric ceramics at room temperature with two different grain sizes.
The number of the layer stack is .
Online since: June 2013
Authors: Han Xang Wang, Wen Jian Lan, Jian Zhang, Hao Jiang
The recursive LMS algorithm is expressed as:  (15) (16) (17) Where μ is scalar parameter (it determines the convergence of the adaptive process), W is the initial value, n is the number of weight vectors (it’s 5 in this experiment), i is the vector length of input signal.
(4) During colating, coarse grained sediment is filtered firstly.
Online since: February 2013
Authors: Ting Yan Bi
China attaches great importance to the development and utilization of biomass energy, and issues biological liquid fuel policies to support the non-grain biological development and adopts a comprehensive subsidy way to support energy utilization of the development collect straw, straw briquette production, straw gasification, and the straw distillation, etc.
The Implement of Preferential Policies Take the strategic entrepreneurs and professional manager as the key, to implement preferential policy, and cultivate and bring up a large number of outstanding entrepreneur and a high level of the enterprise management talent team who has global strategic vision, market development spirits, management innovation ability and social sense of responsibility; take improving the level of leadership and governance capability as the core, and bring up a group of leaders who are good at administrating, and we should also build a firm political courage, innovation, diligent honest, realistic, progressive, the high quality of party and government talents team to promote scientific development. [6] In the process of supporting national renewable energy industry development, we should put tax, credit and investment, price, subsidies and other policies into effect.
Online since: November 2013
Authors: Li Qing Zhao, Cai Qi Hu, Yuan Yuan Yin
Fig. 3 Test prototype The model machine is shown in Fig. 3 .Technical parameters of prototype are as follows: Temperature range: 0-60℃ Cutting error: ≤0.5 mm Processing speed: 10 pieces/min Data storage: 1000 sets Display mode: LCD12864 Power supply: AC 220 v The number of operation buttons: 7 Communication interface: RS-232 Equipment size: 1.5 * 0.85 * 0.8 m Equipment characteristics: 1.
Kernel handling performance of an automatic grain quality inspection system [J].Transactions of the A SAE,2002,45(2): 369~377.
Online since: January 2013
Authors: Peng Wu Zheng, Yuan Yuan Du, Hai Hong Fang
Soybean oil was produced by COFCO Northsea Oils & Grains (Tianjin) Co., Ltd, China.
SP could increase the numbers of opening holes, so SPPSs could hold more oil.
Online since: September 2018
Authors: Vladimir Ivchenko
The ion pattern of the irradiated platinum surface manifests an image typical for grain boundaries and packing defects [9] for practically all micro pattern faces (Fig. 2).
The presence of vacancies in these aggregations can not be determined experimentally, although analysis of the ion contrast of the boundaries of the dark regions shows that their possible number is insignificant.
Online since: April 2019
Authors: Viton Uthaisangsuk, Saranya Kingklang, Patiphan Boonsukachote
Hereby, the rails are subjected to larger number of repetitions of cyclic loads, which would lead to faster and more frequent occurrence of wear and fatigue defects and resulting severe accident [2].
Uthaisangsuk, Modeling of bake-hardening effect for fine grain bainite-aided dual phase steel, Mater.
Online since: November 2016
Authors: Giuliano Gillo
This process reduces the number of parts and assembly operations required for complex aerospace applications.
The limits of SPF are represented, firstly, by the need to use relatively expensive sheets which must be processed so as to obtain a fine grain structure, and, secondly, by the fact that it is considered a low volume production process.
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