查询词典 photon

This text proceeded completely type the ratio distincts about the characteristic of photon and phnon, the mechanism of the creation of them, interaction regulation photon between electronics inside crystal and these of between phnon and photon , clarified the close contact of photon and phnon by using the interation regulation of photon and phnon incide crystal also.

对光子和声子的特点、光子和声子产生的机制、晶体中光子和电子相互作用规律及声子与电子相互作用规律，进行了全面的类比区别。并且利用晶体中光子和声子相互作用的规律，阐明了光子和声子的联系

They can be classificated to two kinds. One kind is build by photomultiplier; another kind is build by MCP. The mechanism of delayed luminescence is discussed with subradiation. A photon count system is built. To proof the biophoton is a kind of ultra weak photon stream originate from exothermic reaction, and primarily discuss the relationship between the delayed luminescence and proteins activity, we chose microphyllous banyan leave , ficus elastica leave, gingkgo leave, Chinese fan palm leave, and cinnamomum camphora leave as biological samples. The ultra weak photon emission from normal biosamples, and proteins inactivated biosample were measured separately with photon count system. The results showed that the delayed luminescence of biosamples have

在研究过程中，作者从辐射陷获的角度讨论了延迟发光的产生机制，对生物光子的生物化学起源与相干场起源的统一性进行了探索；自行搭建了单光子探测系统；测量了小叶榕树、印度橡树，银杏树，蒲葵树香和樟树等多种植物叶片样品的延迟发光，获得了大量实验数据；为了证明生物光子是一种起源于放热化学反应能量释放的微弱光子流，并初步探讨生物蛋白活性与延迟发光衰减之间的关系，测量了正常生物样品、生物蛋白灭活样品的延迟发光，同时测量了多种不含蛋白质的无机化学体系作为比对，实验结果和实验数据的回归分析表明：弱光子发射来源于放热的化学反应，延迟发光的强度与衰减时间与生物蛋白活性密切相关。

Secondly, we provide a two-level model to depict the one-, two-and three-photon fluorescent process and with it to calculate the one-, two-and three-photon fluorescence intensity dependence of the incident excitation intensity and time. We study the fluorescence intensity when excitation light's time distribution are square pulse、Gaussian pulse and sech pulse. We find that the influence of excitation light's time distribution on the two- and three- photon fluorescence peak intensity is larger than the one-photon fluorescence peak intensity. Two-level model can account for the behavior of saturation fluorescence.

然后用二能级模型解释了单、双、三光子激发原理，在理论上推导出了单、双、三光子吸收诱导荧光强度与脉冲强度以及脉冲作用时间的关系，并进一步研究了入射光时间分布分别为矩形、高斯型、双曲正割型时激发溶解在氯仿溶液中的C22H22N4O样品所产生的荧光峰值光强，结果表明激发光的时间分布对双、三光子荧光峰值强度的影响比对单光子的影响要大。

Alternatively, the spectral softening above 2 GeV could be due to gamma-ray absorption via photon-photon pair production on the soft X-ray photon field of the host active galactic nucleus, but such an interpretation would require the dissipation region to be located very close (l~100 gravitational radii) to the black hole, which would be inconsistent with the X-ray spectrum of the source.

另外的关于2 GeV以上能谱变软的可能解释是高能光子和寄主活动星系核的软X射线辐射场通过电子对产生反应而被吸收，但是这个解释要求反应区域要很靠近中心黑洞(1~100倍引力半径)，这和3C 454.3的X射线测量谱相矛盾。

However, you can play a very remarkable trick," van Bibber said."If I shoot a photon into a magnetic field (which you can think of as a sea of virtual photons), a real photon and a virtual photon to make an axion and vice versa.

然而，我们可以耍一个非同寻常的花招，"范·比伯说，"如果我将一个光子射进磁场中，你可以将磁场当作是一个虚拟光子的海洋，那么一个真实光子和一个虚拟光子相互作用，可以变成一个轴子，反之亦然。

As the double photon cross section is large enough to be observed from experiment, the study of double photon production may be practical for exploring the structure of resolved photon.

由于双光子的产生截面大到可以测量，因此，研究双光子产生对于探明分解光子的结构有现实意义。

On the basis of typical photon noise model of the electro-optical imaging system, a real-time photon noise generator has been developed for producing photon noise which gives influence to the results of electro-optical imaging devices.

当将光子噪声实时地叠加到计算机生成的分辨力图案上，首次实现了定量环境下典型的真实光量子噪声的实时仿真叠加。

The result showed , the two dimensional image accumulated by photon emission at some hours. The spontaneous luminescence could be measured by means of photon counting and imaging acquisition. The luminescence intensity of root and leaf was different at the same plane image. It showed that PIAS could objectively display the spontaneous ultraweak photon, and this results provided experimental basis for resea...

结果表明，自发光子长时间积累可形成二维图象；光子计数和采集图象均可得到植物体的自发发光；通过实验探测到幼苗的根、叶在同一平面图象有不同的发光表现；光子成像系统可客观地比较生物自发超弱发光，为进一步研究超弱发光机理提供实验基础。

However, you can play a very remarkable trick," van Bibber said."If I shoot a photon into a magnetic field (which you can think of as a sea of virtual photons), a real photon and a virtual photon to make an axion and vice versa.

然而，我们可以耍一个非同寻常的花招，&范·比伯说，&如果我将一个光子射进磁场中，你可以将磁场当作是一个虚拟光子的海洋，那么一个真实光子和一个虚拟光子相互作用，可以变成一个轴子，反之亦然。

Compared to BMVC,9E-BHVC has many better features needed by a two-photon probe,such as larger two-photon action cross sections,stronger affinity to DNA and better water-solubility.These excellent properties of 9E-BHVC all mentioned above imply that it would be a true two-photon nucleic acid fluorescent probe if it can specially recognize the DNA in complex cellulous environment.So this dissertation has investigated the ability of 9E-BHVC on the cell nucleus imaging detaily.

与BMVC相比，9E-BHVC表现出作为双光子荧光探针更好的特性，例如具有更大的活性吸收截面和更高的结合常数，且具有更好的水溶性。9E-BHVC这些优良的性质预示着该分子如果能够在复杂的细胞环境中特异性地识别DNA，那么它将是真正意义的双光子核成像探针。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。