查询词典 radiation-therapy

According to Rayleigh-Jeans law,the emission of the object is directly linear to its absolute temperature.As the frequency of object increases,Rayleigh-Jeans Law deviates from Planck's Blackbody Radiation Law,and the radiation of object received should be calculated according to Planck's Blackbody Radiation Law.

由 Rayleigh-Jeans公式计算的物体的辐射功率与其物理温度成线性关系，但是随着物体频率的升高，Rayleigh-Jeans公式与Planck定律的近似误差越来越大，此时应根据Planck定律计算物体的辐射功率。

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

The actual object heat radiation model is established after comparing the actual object heat radiation to the ideal black body radiation.

文中对辐射测温原理，传感头材料，单波段检测技术及检测波长选择做了理论分析。

Active galactic nuclei activity in the form of expression in:(1) intense light changes, that is, optical and radio radiation intensity over time, there are Big changes;(2) is very strong luminosity, even more than the Eddington luminosity;(3) significant non-thermal radiation, especially in the infrared region of the non-thermal radiation reached the maximum;(4) a strong movement and a huge gas jet stream.

活动星系核活动的形式表现在：（1）剧烈光变，即光学和射电辐射强度随时间有很大变化；（2）非常强的光度，甚至超过爱丁顿光度；（3）巨大的非热辐射，尤其在红外区的非热辐射达到最大；（4）强烈的气体运动和规模巨大的喷流。

Thus,acute radiation sickness of moderate degree was ascertained.It was deduced that 3 other members in Feng's family died of ARS.Altogether about 100 ictims were found.Conclusion When ealuating a patient with suspicious burn without a history of contact of heat or fire and caustic chemicals and the patient has nausea,omiting,epilation and decrease in white blood cells,the possibility of radiation exposure exists.If some patients with aboe manifestations are found in a same family the radiation exposore may be more probable.

如遇到难以解析的皮肤烧伤病变，排除热或化学烧伤后，应考虑放射烧伤，对有恶心，呕吐，脱发，口腔溃疡，外周血细胞减少者，更支持诊断；如家中成员中相继发生上述同类症状者更应高度怀疑，并作相关检查确诊；简易隔简可为一般医院所采用；细胞因子可促进造血功能恢复，缩短病程。

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。

Ionizing radiation ; natural radiation ; man\|m ade environmental radiation ; public ; environment ; radiation protection

北京大学物理学院技术物理系；物理， Physics ，编辑部邮箱 2003年 09期电离辐射；天然辐射；人工辐射；公众；环境；辐射防护

Methods NCI - H446 lung cancer cell strains were divided into 5 groups:control simple radiation, lipofectin plus radiation, nonsense sqnence radiation and ASOI）N plus radiation.

方法NCI—H446肺癌细胞株分5组，分别为空白对照、单纯照射组、脂质体加照射组、无义序列加照射组、反义寡核苷酸加照射组。

Using linear accelerator,the dose rate of the 6MV X-ray was 2Gy/min.The A549 spheroids was not more sensitive to low doses of single radiation.After exposure to 2-8Gy radiation,the spheroids recured quickly.Thetreatment of fractional radiation were more effective than single ones.With the increase of radiation doses,the 〓-M% block increased,numberof dead and apoptosis cells increased.

直线加速器产生的6MV高能X射线，2Gy／min的剂量率照射，A549多细胞球体对低剂量单次放疗不太敏感，2-8Gy范围内低剂量放疗后球体细胞很快增殖复发，分割放疗疗效优于单次放疗。

The log10 of survivors from radiation is plotted against the radiation dosage, and the radiation D or D10, which is comparable with the thermal D value, is obtained. The D10 is defined as the amount of radiation in rads (ergs of energy per 100g of material) required reducing the microbial population by 1 log (90%).

若将照射中存活微生物数目的log10值对照射剂量进行标绘，则可求出辐照D值(即D10值)，此值与热力D值相当。D10值的意义是微生物总数减少一个对数周期(90％)所必需的照射拉德数(每100克物质得到的能量尔格数)。

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。