低能

It can be used to simulate the transportation of alpha particle in media, to compute the neutron yield in media contains oxygen and to track the history of the secondary neutrons.

开发了低能α粒子与中子耦合输运程序，可以计算低能α粒子在各种介质中的输运、含氧介质中的中子产额，跟踪次级中子。

Peachtree Lighting Introduces 3 Elegant New Series of Geometric Architectural Pendants for Use in Low Energy LEED Certified or 'Green' Buildings - Covington Ga.

桃树照明新推出系列3几何建筑典雅吊坠用于低能低能电子衍射证实或'绿色'大厦-covington共性的桃树照明，领先点源节能建筑扎实照明瓶、装饰灯具、家庭推出三项新产品。

The main products of low energy ion is formed by the incident 〓 reacted with molecule such as the cystine and tyrosine.

通过对低能离子辐照多种氨基酸的谱学研究表明低能离子辐照引发的氨基酸反应不同于其他辐射源。

The influences of the shock thickness and Alfven waves on the particle acceleration by diffusive shock waves are numerically studied through solving one-dimensional diffusive equation including the second-order Fermi effect. It is shown that the spectral index of the energetic particles strongly depends on the shock thickness. For example, the spectral index increases from 2.1 to 3.7 in the low energy range of 3-10 MeV and from 2.5 to 5.0 in the high energy range of 20-60 MeV as the thickness increases. The spectral index decreases from 4.3 to 3.1 as the particle injection energy increases. The spectral index decreases from 4.0 to 1.8 at the quasi-steady stage with the enhancement of the compression ratio from 2 to 4. The results indicate that under the influence of Alfven waves, the energetic particle spectrum at lower energy becomes flat and the spectral index decreases from 2.5 to 0.6 in the low energy range of 3-10 MeV and from 11.6 to 5.0 in the high energy range of 20-60 MeV. At the same time, the rollover energy reaches 19.6 MeV. The spectral index decreases from 5.8 to 2.9 as the energy density of Alfven waves increase. All these results are basically consistent with the theoretical models, as well as the observations of typical energetic particle events.

通过数值求解包含二阶费米加速的一维扩散方程，探讨在准平行激波条件下激波厚度和级联阿尔芬波对粒子加速的影响，研究粒子分布函数的演化与激波厚度和阿尔芬波强度的内禀关系，计算结果表明：(1)考虑激波厚度时，谱指数明显依赖于激波厚度，随着厚度从0.32增大到2.56，低能端(3-10MeV)谱指数逐渐从2.1增加到3.7，高能端(20-60MeV)谱指数从2.4增大到5.0，能谱逐渐变软；当初始注入粒子动量增大1.3倍，质子能谱指数从4.3减小到3.1，且与零厚度激波加速的谱指数差值缩小；厚度不变时，随着压缩比从2增加到4，准稳态分布时低能端(3-10MeV)粒子能谱指数逐渐从4.0减小到1.8谱变硬；(2)在级联阿尔芬波的影响下，随着时间的增大，粒子在低能处(3-10MeV)的谱指数从2.5减小到0.6高能端(20-60MeV)谱指数从11.6减小到5.0，能谱变硬，拐点能量值从7.5MeV增大到为19.6MeV；随着波的能量密度增大，谱指数从5.8减小到2.9，这表明阿尔芬波强度越大，加速效率越高，通过与激波厚度解析结果和高能粒子事件的观测能谱比较发现两者是一致的，说明数值模拟结果是可靠的。

The microdosimetric spectrum and radial dose distribution of 16O＋ particles with energy 109 keV generated from small low energy heavy ion accelerator permeating through PET film (C10H8O4) with thickness of 4 μm are measured by the cylindrical tissue-equivalent proportional counter.

用圆柱型流气式组织等效正比计数器测定了K-200 kV低能重离子加速器提供的低能16O＋离子束流在穿过4 μm厚的PET（C10H8O4）薄膜后的微剂量谱和径向剂量分布。

It was also found that thymine and uracil had different sensitivities to N+ and Ar+.

研究还发现胸腺嘧啶和尿嘧啶对低能N+和低能Ar+的辐射敏感性不同。

It is found that both the total and differential cross sections increase with the increasing of screening interaction, and especially for energies below 10 keV/u, the cross sections are one to two magnitudes larger than those in the unscreened case.

研究发现，碰撞电离总截面随等离子屏蔽的增加而增大，特别是在10 keV/u以下的低能区电离截面有量级的增加。对随能量变化的一阶微分截面，在低能碰撞过程中，屏蔽作用增加，微分截面呈量级增加，高能碰撞微分截面呈倍数增加。

The process of the different size of living things irradiated with low energy ion was analysed.

低能离子辐照的作用深度和辐射对象的大小决定了低能离子辐射的作用过程。

79Cm and 3. 78cm from M,, M2 to M3 respectively which cannot reach 1/3 height of the control averagely. The seedlings irradiated by 80 X1015 NYcmgave birth to some flower buds without floral shoots and their seed setting rate was lower than that of control obviously. Some M3 plants irradiated by 60X1015 NVcm2grow into bunches which did not appear in M, and M2. Moreover, some phenotypic variations could be inherited stably in subsequent generations. For instance, the dwarf character in the plants treated with the dose of 80 X1015 was stable in inheritance in consecutive three generations.

再次，对不同剂量的低能N~+处理的拟南芥的M_2代试管苗的叶片外植体愈伤组织的诱导和耐盐性进行了比较和分析，发现经不同剂量的低能离子处理的M_2代试管苗的叶片外植体，离子处理影响其出愈率，高剂量处理会抑制愈伤的诱导，但低剂量离子注入对愈伤组织的增殖有一定的促进作用；愈伤组织的耐盐性也与剂量相关，低剂量的耐盐能力比对照的低，但是高剂量处理反而提高愈伤的耐盐性，这间接表明低能离子引起了拟南芥的生理状态的变化，产生了生理效应。

The accelerator physics problems of the upgrading program were discussed here, which include the space charge effect on the very low energy beam line, non-parity acceleration at the injector cyclotron SFC, longitudinal match between two cyclotrons, strong magnetic field leakage afluence on the beam transfer at low and very low energy, residual first harmonic magnetic field in the main cyclotron SSC injection region, the low efficiency and beam quality of heavy ions after through stripper etc.

主要问题有：超低能束流传输的空间电荷效应的影响，扇聚焦回旋加速器SFC高频加速电压不对称对束流轨道的影响，用半频聚束的方式补偿两台回旋加速器的纵向不匹配，前束线上聚束器的工作模式的选取，强杂散磁场对超低能和低能束流传输的影响，分离扇回旋加速器SSC注入区过垫补磁场对注入束流轨道的影响，SFC和SSC的单圈引出，重离子通过剥离膜后的束流损失和束流品质的变坏等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。