The energy relaxation and kinetic evolution of transient spectra of bacteriochloro- phylls (BChls) in light-harvesting complex LH2 from Rb. sphaeroides 601 were investigated using femtosecond pump-pro
We obtain the co-seismic ground deformation field of the Mani M7.9 earthquake on November 8, 1997 through three-pass differential interferometric processing. Then we get the geometric and kinematics p
To study bistatic scattering from a target at low altitude above two- dimensional (2D) randomly rough sea surface under an electromagnetic (EM) wave incidence at low grazing angle (LGA), a numerical a
面对超市里顾客排起的长长队列,收银员用手持设备不停地扫描着顾客购买的商品,一件,又一件……遇到“扫”不出来的时候经常有,这时就不得不手工输入冗长的商品序列号,在长长的队列中又不时发出顾客不耐烦的埋怨声。也难怪,人在排队等候的时候,往往会感觉时间过得最慢。此时,再熟练的收银员也不禁会手忙脚乱……
In the paper, the hydraulic architecture parameters of Pinus tabulaeformis seedlings (4 years old)were measured by improved flushing method under normal water condition in the green house and the basi
Taking an example of Majiayu Catchment Area (14.15 ha) in Taoyuan County of HunanProvince, the soil and water resources dynamics, fertility evolution characteristics andland productivity changing situ
以美洲商陆 (PhytolaccaamericanaL .pokeweed)的茎尖为外植体 ,建立了美洲商陆的快速繁殖实验体系 .茎尖增殖最佳培养基为MS +0 .0 5mg·L-16 苄基腺嘌呤 (6 BA) +0 .1mg·L-1赤霉素 (GA3 ) +30 0mg·L-1水解乳蛋白 (LH) +2 0 g·L-1蔗糖 +7.0 g·L-1琼脂 ,pH5 .8.诱导根的最佳培养基为 1/
作为一种较新的生物特征,掌纹可用来进行人的身份识别.在用于身份识别的诸多特征中,掌纹线,包括主线和皱褶,是最重要的特征之一.本文为掌纹识别提出一种有效的掌纹线特征的表示和匹配方法,该方法定义了一个矢量来表示一个掌纹上的线特征,该矢量称为线特征矢量(line feature vector,简称 LFV).线特征矢量是用掌纹线上各点的梯度大小和方向来构造的.该矢量不但含有掌纹线的结构信息,而且还含有这