或许很多人都知道,我是靠写瑶村的点点滴滴在城里谋生.我笔下的瑶村虽然清贫,却非常美.有人就说我矫情,说农村生活并不像我说的那么美.这话是对的.
The DNA G-quadruplex formed by the human telomeric sequence is a potential target for novel anticancer drugs. We have investigated an intramolecular DNA G-quadr
针对在正电子发射断层成像中,经典的惩罚最小二乘算法和基于局部先验惩罚的改进算法不能有效地抑制噪声并保护图像边缘的问题,提出了一种新的各向异性扩散滤波非局部惩罚最小二乘重建算法(PLS-PDE).新算法首先对图像进行基于非局部二次先验的最小二乘估计,接下来对此估计值进行基于双向扩散系数的各向异性扩散滤波.所提出的算法综合了非局部先验与各向异性扩散滤波的优点.实验结果表明,新算法在抑制噪声和边缘保护方
几年前,我在某乡挂职任乡党委副书记时,认识了一位青年农民。那时他刚刚承包了村里的采石场,贷了一笔款,请来了技术员,雄心勃勃,准备大干一场,力争在3年内脱贫致富。他有文化
A new layered zincophosphate was synthesized under solvothermal conditions by employing racemic 1,2-diaminopropane as the structure-directing agent. The structu
The treatment of bis(2-hydroxybenzyl)-amine(HL) with NaOH and Co(Ⅱ)(NO)2 gives isostructural one-dimensional coordination polymers [(NaOC2H5)CoL2]n(1). The cob
[1]Robson, R. , Abrahams, B. F. , Batten, S. R. et al. , Supramolecular Architecture, American Chemical Society, Washington, DC, 256(1992)[2]Aakeroy, C. B. , Se
The binding mode of the amino acid ethyl esters(guest) by 5-(2-carboxylphenyl)-10,15,20-triphenylporphyrinatozinc(Ⅱ)(host 1) was studied by means of 1H NMR spe
Each of Keggin type heteropolytungstosilicic and heteropolytungstogermanic acids reacted with 8-quinolinol, p-aminodimethylaniline and pyridine, respectively, y
Nanocrystallite δ′-ZrW1.6Mo0.4O8 was prepared in the precursor route synthesis. The characterization by means of powder X-ray diffraction (XRD) and selected a