有天,上班的途中经过一个施工的工地,就在那暖洋洋的中午的阳光下,一群打工的力工,穿着破烂烂的衣服,就那么随随便便的,面对兰天躺在沙堆上,睡着的和没有睡着的,单纯的笑容是
The structural evolution of nanostructured γ-Ni-28Fe alloy (n-Ni-Fe) (grain size d-30 nm), synthesized by the mechno-chemical method, was investigated by using
A novel tri-branched copolymer is synthesized to show strong two-photon absorption and intense two-photon absorption induced fluorescence emission under the exc
1 基本概念故障检测过程可抽象为图1所示的模型,即: X=F(U,Y) (1)故障检测的任务是根据激励向量U和响应向量Y来判断系统状态X。
1 The basic concept of fault detection p
Radiative lifetime measurements were performed by time-resolved laser-induced fluorescence (LIF) technique for eight even-parity levels of the astrophysically i
A geoacoustic inversion scheme, which combines several inversion methods together to invert for the bottom parameters, has been proposed based on the fact that
The magnetic microstructures of two Dy-Al substituted sintered Nd-FeB magnets with the different nominal compositions of Nd12.2Dy0.6Fes0.4Al0. 7B6 (at. %) (comp
High spin states of the odd proton-nucleus 169Ta have been populated in the reaction 155 Gd(19 F, 5n) with beam energies of 97MeV. Rotational band based on da/2
再生水利用是解决水资源短缺的有效方法,但同时会导致未完全去除的污染物进入地下.选取南通、上海和济南等三地作为华东地区典型城市,通过UPLC-MS/MS法对再生水厂出水和附近
Based on our previous study [Chin. Phys. Lett. 20 (2003) 1144] on the solid-state cathodoluminescence from organic luminescent materials, here we study the orig