"重分布"思想在结构设计中的应用

介绍了一种利用钢筋混凝土的塑性性能,采用重分布思想进行结构设计的思路和方法。     

Study of an athermal infrared dual band optical system design containing harmonic diffractive element

A harmonic diffractive element (HDE) is first successfully introduced to the athermal system of infrared dual band in this paper. In this system, there are only three lens and two materials, silicon and germanium. When the temperature ranges from -70℃ to 100℃ in the dual band,it can simultaneously accomplish the rectification of the longitudinal aberration in the big field of view, as well as the wave front aberration less than 1/4 wavelength. Modulation transfer function of dual band approaches or attains the diffraction limit. The calculation results show that the spectral properties of the HDE are between refractive and diffractive elements, so we can design a simple dual-band and athermal optical system by selecting the thickness and central wavelength of the HDE exactly. Compared with a conventional refractive optical system, this system not only reduces the demand for high technical levels, but also has a compact structure, few elements, a high transmittance better aberrations performances and athermal character. At the same time, the use of the HDE also offers a new element for the infrared optics design.     

环氧-呋喃防护材料的研制

碳化是引起水工钢筋混凝土钢筋锈蚀的重要因素之一．用糠醛、丙酮作活性稀释剂的环氧一呋喃涂料、玻璃钢与混凝土复合使用，粘接性能好，机械性能优良，防碳化、冻融能力强，与混凝土的弹性模量接近，能有效阻止混凝土碳化、钢筋(钢丝网)锈蚀．经过20余项工程应用及10余年的考验效果良好．     

熵的泛化及广义熵的应用

讨论了熵概念深化、泛化的过程及广义熵在科研和实践中的应用，分析了熵外延的一般方法与内涵。     

一类带Lp^a边界条件的非线性RH问题的解法

利用柯西-黎曼条件和偏微分方程理论，得到了一类非线性RH问题的求解方法，并通过实例表明该方法是可行的。     

弱相互作用下原子的玻色-爱因斯坦凝聚

从理论上分析提出了弱相互作用下Bose体系的BEC理论，并由此来解释液^4He的超流性。通过深入对比理想Bose气体和弱相互作用下Bose体系发生BEC性质的不同，分析得出了凝聚体系粒子间相互作用的有无是导致二者性质不同的主要原因。     

世界性项目——国际热核试验性反应堆

1958年,一位名叫亚力山大·布拉德肖(Alexander Bradshaw)的学童看到《每日镜报》第一版上印着一幅海洋波涛的照片,报上刊登的大字标题“核聚变——能用十亿年的能量之源”深深地留在他的记忆中。当时的物理学家们认为:在10年至20年里,人类将能够利用氢核的聚合来发电。     

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