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The acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regards to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results.

先将结构的声辐射功率表示为一个正定的厄米特二次型,运用广义特徵值分解求解了复杂结构的声辐射模态,然后利用声辐射模态关于阻抗矩阵与均方速度祸合矩阵的正交性,求解了复杂结构的声辐射效率,最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。

In comparison with literature method, the microwave approach shows the salient features of rapid reaction rates and significant energy saving, clean reaction conditions, enhancement in chemical yield, and nonuse of perchloric acid(70%), which will result in cost saving and minimize safety concerns in the organic laboratory.

考察了微波辐射功率和辐射时间对目标产物收率的影响,2,4,6-三芳基吡喃盐与盐酸羟胺反应生成3,5-二芳基异噁唑衍生物的最佳微波辐射功率为600 W,辐射时间为8 min,最大收率为83%。

The author discussed the effect of opacity on stellar evolution and concentrated on the mechanism of triggering blue loop by using Padova stellar model. It shows that extended mixing at the bottom of the convective envelope changed the interior hydrogen profile, which triggers or suppresses blue loop. Laboratory astrophysics, which is a cross subject of astrophysics and plasma physics, combines the demand of accurate data of radiative opacity with the latest advances in high intense lasers to devise the third independent method to study the radiative opacity. On the basis of the comparison between stellar material and laser-produced plasma in terrestrial laboratory, the desirable way to study opacity in laboratory and the brief introduction to the experiments relative to opacity are given.

本论文就开展辐射不透明度实验室研究的背景、内容和意义进行了介绍,并在对实验室的激光等离子体和天体环境下的恒星物质两者差异和相关性的认识基础上,论证了开展辐射不透明度实验室研究的可行性,而且对世界上正在开展的类似研究予以简要介绍,期望可以将天体物理领域对辐射不透明度数据可靠程度的质疑以及对其准确数值的广泛要求,与激光等离子体物理实验的最新进展相结合,推进辐射不透明度实验室研究,为辐射不透明度的研究开拓了继天文观测和理论计算的第三种独立的手段。

This thesis developed physics model of radiant panel heating and cooling room based on previous studies. Computational fluid dynamics software FLUENT was applied to study the thermal environment of radiant panel heating and cooling room. The distributions of temperature and velocity of rooms of radiant floor heating and cooling, radiant ceiling heatingand cooling and radiant wall heating and cooling are gained.

本文在总结前人经验的基础上,分别建立了辐射板采暖和辐射板供冷房间的物理模型,利用商业软件Fluent对采用辐射板采暖系统和辐射板供冷系统房间内的热环境进行了模拟研究,分别得到了辐射板布置在地板、墙面和顶板三种不同方式下的采暖和供冷房间内的温度和速度分布情况。

Fig.7. The distribution of the net radiation flux at the top of the atmosphere inferred from NIMBUS 3. Plots of the zonally averaged net flux, the flux along 90°E and along 20°N for July 1969 are shown.

根据"雨云"3 号资料推算出的大气层顶净辐射通量分布。1969 年 7 月纬向平均净辐射通量,沿 90°E 的净辐射通量和沿 20°N 的净辐射通量分布。

English: 672. Fig.7. The distribution of the net radiation flux at the top of the atmosphere inferred from NIMBUS 3. Plots of the zonally averaged net flux, the flux along 90°E and along 20°N for July 1969 are shown.

图7 。根据"雨云"3号资料推算出的大气层顶净辐射通量分布。1969年7月纬向平均净辐射通量,沿90°E的净辐射通量和沿20°N的净辐射通量分布。

Based on 45-month NOAA satellite data of radiation, including the absorbed sun radiation, the albedo and outgoing long wave radiation, as well as the formula for the radiation budget, the features are revealed for the zonally and monthly averaged radiation budget in the earth-atmospheric system.

利用温斯顿编制的美国NOAA卫星第一批 45个月辐射观测资料分析图,包括吸收太阳辐射、反射率及射出长波辐射,而地—气系统辐射平衡是用公式计算的。

Design the structure of high performance Low-E film including its material and thickness of every layer according to basic optical theory. Carry out an innovative work to calculate its optical performance by characteristic matrices and optical admittance. Compare the results with those we get by traditional measurement.3. Prepare Low-E films with RF magnetron controlled reactive sputtering. The result shows that in the visible region (380nm-780nm), the highest transmittance is 82.4% while the average value is 75%. In the NIR region (780nm-2500nm), the average transmittance is 16.2%. These characters can fit the demand of the glass used in architecture and cars, and also in other applications.4. We novelly use the material Titanium as protective layer to solve the problem that Ag layer would disappear when depositing the second TiO_2 layer. As the protective layer, Ti does not increase the number of targets so as to lower the costs. The thickness of the protective layer Titanium is adjusted by controlling of sputtering time. Results shows the Low-E films get the best optical character when the sputtering time of Titanium is 20 seconds5. We novelly proposed a new transmittance quality factor Q=_·(?_-__ to evaluate the performances of Low-E films, which makes it easier to judge the qualities of Low-E film.6. The photocatalysis of Titanium dioxides is researched and introduced into Low-E films. Sb-doped TiO_2 thin films are prepared. Its photocatalysis and hydrophilicity are measured.

论文的工作主要有:1、总结了低辐射薄膜的制备方法,性能,以及国内外最新研究进展和应用,并对两种类型的低辐射薄膜进行了比较。2、从光学基本理论开始,设计了离线低辐射薄膜的结构,包括每一层的材料和厚度,并创新性的用特性矩阵和光学导纳理论计算了该离线膜的光学性能,利用软件对其进行了仿真,与实际制备的薄膜所测量的性能相比较。3、完成在实验室仪器上制备低辐射薄膜,掌握其工艺条件,解决了超薄金属膜的制备问题,所制备的低辐射薄膜在可见光区(380hm-780hm)最高可达82.4%,平均透射率为75%;在近红外区(780nm-2500nm)的平均透射率为16.2%,其性能达到建筑物幕墙玻璃,汽车前挡玻璃等应用标准,并为进一步的大规模生产打下基础。4、针对中间银层在镀上层膜时易被氧化这一工艺难题,本研究创新性的提出用Ti膜作为保护膜,没有增加新的靶材,提高了生产效率,并节约了生产成本。

This invention relates to a circular small UHF antenna with high dielectric constant and its processing method, among which, the UHF antenna characterizes that 1,it is composed of a radiation plate, a feed point and a medium chip, 2, the radiation plate is closely adhered to the top surface of the medium chip, the bottom surface is the metal ground face, the chip and the radiation plate is rectangle or square, 3, the feed point is at the 1/3 place of the diagonal line of the rectangular or square radiation plate apart from the top point.

本发明涉及一种高介电常数圆极化小型超高频天线及其制作方法。UHF天线特征在于(1)所述的超高频天线是由辐射贴片、馈电点和介质基片组成;(2)辐射贴片紧贴在介质基片的上表面,介质基片的下表面为金属接地面;介质基片和辐射贴片呈矩形或正方形;(3)馈电点位于矩形或正方形的辐射贴片的对角线离顶点的1/3处。其制作方法是采用ε≥38高均匀性陶瓷基片,再结合丝网印刷技术完成厚膜焙银后形成辐射贴片,然后再圆极化。具有制作工艺成熟、体积小及使用灵活等特点。

In order to obtain infrared spectral radiance distribution of some infrared sources, such as spectral radiant flux density, spectral radiant intensity, spectral radiance and spectral irradiance, the instrument response function under different conditions must be known.

在应用红外发射光谱来获得某些红外源的绝对光谱能量数据,如辐射源光谱辐射通量密度、辐射源光谱辐射强度、辐射源光谱辐射亮度及光谱辐射照度等时,需要得知不同条件下的仪器响应函数。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力