共查询到20条相似文献,搜索用时 31 毫秒
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纸,除了用于书写、印刷外,还能做什么?在生活中,不乏这样的手工达人:利用纸的硬度,做出精美绝伦的纸模造型;利用纸的纹理,折叠出不一样的逼真动物;更有甚者,利用不同纸张的肌理,做出比石膏像更逼真细腻的纸雕。本期的圈子栏目,就为你介绍这样一些对纸疯狂热爱的群体,看看关于纸的不完全猜想。 相似文献
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党的十八大以来,习近平总书记多次就“保护红色文化、传承红色基因”进行阐释和论述,反复强调与确保红色血脉永庚续,红色基因代代传。鉴于此现状,对“红色文化”进行了研究,以关系美学作为研究的切入点,建构基于关系美学的“红色”陶瓷文创产品互动化、体验化的设计方法,执持把中国红色文化传承好的态度,思考多元融合的陶瓷文创设计原则。以此传承红色记忆,创新红色陶瓷文创产品内容,让红色文化走得更远。 相似文献
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他们可以是学生.也可以是设计师;可以是旅行者。也可以是商人。他们身份多变,却有一个共同点:玩创意.爱手工。小到印有自己LOGO的各种小物、大到改装一条牛仔裤。或是背包坐遍全城的公交车.再把路线绘制出来……在他们眼里。总有想不到的惊喜.在他们手里,总能化平凡为神奇。 相似文献
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分析了煤化工(煤制油)和风电产业面临的问题,提出了转换角度看待煤化工发展中的制约,把二氧化碳捕集、风电制氢和逆水煤气变换反应相结合,提出煤化工绿色变身的发展思路。 相似文献
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Stanislaw Cudzio 《Propellants, Explosives, Pyrotechnics》2001,26(1):12-16
This paper contains some results of research on the IR‐screening capability of smoke clouds generated during the combustion process of varied pyrotechnic formulations. The smoke compositions were made from some oxygen or oxygen‐free mixtures containing metal and chloroorganic compounds or mixtures based on red phosphorus. The camouflage effectiveness of clouds generated by these formulations was investigated under laboratory conditions with an infrared camera. The technique employed enables determination of radiant temperature distributions in a smoke cloud treated as an energy equivalent of a grey body emission. The results of the analysis of thermographs from the camera were the basis on which the mixtures producing screens of the highest countermeasure for thermal imaging systems have been chosen. 相似文献
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在CD-R产业经过1999年~2000年的高速发展之后,虽然2001年CD-R产业进入了调整期,但是CD-R产品的需求仍保持相当速度的增长。根据最新的消息显示:台湾莱德公司为了保持其在行业中的龙头地位,现在已经开始利用其规模优势,再次以较低的价格冲击CD-R市场,欲将小的生产商清除出局。对于中国的CD-R生产企业,我们最大的优势在于:我们购置设备较晚,设备的价格比较低廉,同时设备的生产效率比较高。同周边地区的生产企业比较,这些企业引进设备的时候,价格在80O万/复制头,而我们引进的时候价格已经下降至300万/复制头,生产周期也从6秒下降到4.5秒。可以说我们是轻装前进,周边企业是负重而行。同时随着2001年后CD-R产业结构重新洗牌的趋势越来越明显,中国的企业是否能抓住这个机会对将来整个光盘产业的演变具有深远的意义。 相似文献
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D. M. Murphy D. J. Cziczo P. K. Hudson D. S. Thomson J. C. Wilson T. Kojima 《Aerosol science and technology》2013,47(4):401-409
Using on-line analysis of single particles, we have observed both generation and resuspension of particles when ice crystals, cloud droplets, or dust impact an aircraft inlet. Large numbers of particles smaller than 1 μ m with a composition suggesting stainless steel were measured when flying a stainless steel inlet through cirrus clouds. Smaller numbers of metal particles were also observed when flying through dust or water clouds. A different instrument, sampling through a different inlet, found zinc particles when sampling in cirrus clouds. Laboratory experiments have verified that high-speed ice crystals can abrade stainless steel. Collision of ice crystals with the inlet wall also resuspended previously deposited particles. A notable example came when a flight through the space shuttle exhaust plume deposited large numbers of unique particles in our inlet. Some of the same types of particles were observed when the aircraft flew into an ice cloud the following day. The generation of particles by impaction of ice crystals and dust in inlets may have affected some published results about ice nuclei and metal particles in the upper troposphere. The newly generated particles cannot be distinguished from atmospheric particles by size alone. 相似文献
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M. M. Doustdar K. Mazaheri M. Hosseinalipour 《Combustion, Explosion, and Shock Waves》2005,41(5):510-520
A computational investigation is performed to study the effects of injection velocity on the main dynamic parameters of the
fuel cloud released into the open atmosphere. The volume, shape, and growth rate of the cloud, turbulence intensity, as well
as the distribution of fuel concentration, temperature gradient, and self-ignition induction time are the most important parameters
determining the mode of combustion that propagates through the cloud. A modified KIVA-based program is employed to fulfill
the calculations. Systems of equations are solved by a finite-volume method. The k-ɛ model and discrete droplet model are applied for modeling gas-phase turbulence and liquid spray, respectively. The fuel-injection
velocity is shown to have a major effect on turbulence intensity and uniformity of the cloud. With increasing injection velocity,
the detonable part of the cloud rotates sooner and faster, and there is less time for ignition. A comparison with experimental
results is performed for validation.
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Translated from Fizika Goreniya i Vzryva, Vol. 41, No. 5, pp. 29–40, September–October, 2005. 相似文献
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Combustion, Explosion, and Shock Waves - Physicomathematical models are proposed to describe the processes of detonation propagation, attenuation, and suppression in hydrogen–oxygen,... 相似文献