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热辐射

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Light output analysis tests character of spectrum radiate of pyrotechnic mixtures and analyses wave band distribute of light by comparing different static blaze spectrograms of the pyrotechnic mixtures. Screen out the better pyrotechnic mixtures according to request of pumping source. Press experiments in airtight erupt container experiment, which simulate the circumstance that pyrotechnic mixtures deflagrate in quartz pipe, realize the press influence to the quartz pipe wall and the disciplinarian of axes press variety. Apply these pyrotechnic mixtures to Nd:YAG lasers as the pumping source and compare pumping efficiency of different pyrotechnic mixtures. Pumping efficiency is an important standard which checkout if these pyrotechnic mixtures are the better pumping source. Sensitivity experiment analysis incarnate security of pyrotechnic mixtures that is the essential parameter in the process of design, manufacture and use.

通过对烟火药的热分析(爆热分析、DTA、TG),了解备选烟火药反应过程中的能量输出特性及反应过程中的物理、化学变化规律;光输出分析实验对烟火药配方光谱辐射特征进行测试,比较其静态火焰光谱图,分析不同烟火药剂光辐射波段分布特征,根据激光泵浦源的辐射要求,进而筛选更符合激光泵浦源药剂要求的烟火药;模拟烟火药在石英管中爆燃环境的密闭爆发器压力分析实验反映了烟火药在石英管中反应时对管壁的压力影响以及管内轴向压力变化规律;将烟火药作为泵浦源应用于Nd:YAG固体激光器,比较不同烟火药的泵浦效率,作为检验烟火药是否适合作为激光泵浦源的重要标准;感度实验分析体现了各种烟火药的安全性,是烟火药设计、制造和使用的必要示性数。

The results are revealed that reading error of the thermocouple in the course of dynamic response is mainly ca...

结果显示:在动态响应过程中热电偶读数误差主要决定于热电偶测头以及热电偶隔热罩的辐射热损失,并且它的辐射热损失又受热电偶测头的滞后时间常数τ0 的限制;随着动态响应过程的进行,热电偶读数的误差急剧变化;当τ=3τ0时,基本上可以认为动态响应过程结束,但升温变化时误差更大。

Some related specilist point out ,the modernists dependent upon mobile phone more and more , the mobile phone is not the same as the common ionization radiation ,the wavelength of electronmagnetic wave emanated by the mobile phone is 900MHz to 1800MHz. Although, the DNA has not been damaged by it to certain degree yet , but this microwave can radiate to the depth of encephalic 4 to 6cm . stimulate the water molecules and cells moving ,result in the temperature of corresponding tissue raising 0.1c, induce the fever reflection such as the headache,disfunction of blood supply in brain, cauterized feeling on the skin of face ,ear as well as the skin around the ear etc .also induce the non-fever reflection such as the changing of sleeping style ,raising blood pressureand and disfunction of recognization etc.

0有关专家指出,现代人越来越离不开手机,但不同于普通的电离辐射,手机发射的电磁波波长为900MHz--1800MHz,虽然尚没有达到损伤DNA的程度,但此种微波可以辐射深度达颅内4--6cm,刺激水分子和细胞发生运动,导致相应组织温度上升0.1c,引发如头痛,脑供血障碍,面部皮肤烧灼感及耳部及耳周皮肤烧灼感等热反应,而且可以引起诸如睡眠方式的改变,血压升高,认知功能障碍等非热反应。

ABSTRACT Based on analyzing thermal process of reheating furnace in Steel Factory of BaoTou Iron and Steel Company.

摘 要:本文是在分析包头钢铁公司的步进式加热炉热过程的基础上,针对其具体情况,建立了加热炉生产热过程中包括辐射换热过程和钢坯加热过程及其耦合过程的热过程数学模型,并对热过程数学模型求解方法进行了研究。

Finally, based on theoretical analysis and structure designs of a-Si and polySiGe bolometers and TFT-based room-temperature infrared detectors, layouts and process-flow designs are performed. The a-Si and polySiGe bolometers with various structures and dimensions are fabricated using the MEMS-IC integration processes proposed in this dissertation. For the first time, the a-Si TFT-based room-temperature infrared detectors and arrays are demonstrated. Several fabrication runs are conducted to increase the yield.

在理论分析和结构设计的基础上,对a-Si、polySiGe测辐射热计和a-Si TFT室温红外探测器进行了版图和工艺设计,采用基于多孔硅牺牲层技术的MEMS-IC集成工艺制作了多种结构尺寸的a-Si和PolySiGe测辐射热计,并且首次实现了a-Si TFT室温红外探测器及阵列,进行了多次工艺流水,器件成品率较高。

In calculation, it was assumed that nozzle flow was frozen, and convective and radiative heat transfer from gas to nozzle wall was considered. Governing equations were discretized with second order upstream scheme and radiative heat transfer equation was solved with Discrete Ordinates method.

在计算中,假定喷管流动为冻结流动,考虑燃气向壁面的对流换热和辐射换热;采用二阶迎风格式离散控制方程,采用DO模型离散求解辐射换热方程,水蒸气的吸收系数根据Leckner公式计算。

Nozzle flow was assumed to be frozen, and convective and radiative heat transfer from gas to solid wall was considered. Discretization of the governing equations was performed with two order upstream scheme, and radiative heat transfer equation was solved with Discrete Ordinates method. Absorption coefficient of water vapor was calculated by Leckner formula.

计算中,假定塞式喷管中的流动为冻结流动,考虑燃气向壁面的对流换热和辐射换热;采用二阶迎风格式离散控制方程,及DO模型离散求解辐射换热方程,水蒸气的吸收系数根据Leckner公式计算。

After reviewing and discussing a lot of radiation transfer models, the three-dimensional heat transfer in the test furnace was modelled by the D-T method, results are approximately agreeable to the experimental results.

在综述、分析了各种辐射换热模型之后,利用离散传递法计算了炉内三维辐射换热过程,得出了合理的计算结果,与试验结果比较接近。

Based on the split window method, the classification of the ground land cover types, and the given spectral emissivities range in thermal infrared bands for each ground class and the fact that the actual land surface temperatures are the same for all thermal bands of MODIS, the land surface temperature were determined by means of maximum correlation and least square fit.

因此,本文在地表温度遥感定量反演的局地分裂窗算法的基础上,依据MODIS的多个热红外通道,其中的任意两个通道组合,通过分裂窗算法得到的地表温度都应该相等这样一个事实,在对地物进行分类的基础上,给定地物的波段比辐射率的范围,借助于两组温度之间的最大相关和最小方差,通过迭代的方式得到地表温度和分裂窗算法所使用的MODIS热红外通道的波段比辐射率。

Hot layer to determine the vertical distribution of temperature, one must also consider airglow radiation energy losses and hot layer at the bottom of the atmosphere oxygen atoms infrared radiation cooling effect.

确定热层内温度垂直分布时,还必须考虑气辉的能量辐射损失和热层底部大气中氧原子的红外辐射的冷却作用。

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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。