Compact 120 TW Ti: sapphire laser system with a high gain final amplifier

A 120TW/36fs laser system based on Ti:sapphire chirped-pulse amplification (CPA) has been successfully established in our lab. The final four pass Ti:sapphire amplifier pumped by an energetic single-shot Nd:YAG-Nd:glass laser was designed and optimized. With 24J/8ns pump energy at 532 nm, 300 mJ/220 ps chirped pulse was amplified to 5.98 J in this amplifier, and a total saturated gain of similar to 20 was achieved. The focused intensity of compressed beam could reach to 10(20) W/cm(2) with the M-2 of similar to 2.0. (c) 2005 Elsevier Ltd. All rights reserved.

A novel bradykinin-related peptide from skin secretions of toad Bombina maxima and its precursor containing six identical copies of the final product

Amphibian skin contains rich bradykinin-related peptides, but the mode of biosynthesis of these peptides is unknown. In the present study, a novel bradykinin-related peptide, termed bombinakinin M, was purified from skin secretions of the Chinese red bell

蛇ju属一新亚种记述

通过对采自云南程海和珠江、闽江、长江、辽河、松花江等水系蛇ju标本的形态、度量特征进行仔细分析和比较，认为蛇ju程海种群是蛇ju的1个新亚种，命名为程海蛇ju（Saurogobio dabryi chenghaiensis）。程海蛇ju的特征为：吻皮发达，盖过上唇；上下唇布满发达的乳突；体及尾柄极细长，体高为体长的12.7％-15.0％，尾柄高为体长的5.5％-6.1％、为尾柄长的31.8％-39.1％；沿体侧中轴自鳃孔上方至尾鳍基具一浅色暗纹，其上布有6-11个大型棒状黑斑（黑斑长为宽的2-4倍）；肛门位于腹鳍长度的中点之后；尾鳍最长鳍条为其最短鳍条的2倍以上；仅分布于云南程海。

树ju精子发生的季节性变化

野生成体树ju精小管在一年中有一个高峰值和低谷值, 高峰值出现在4月, 低峰值出现在10 月; 1、4月份的生精上皮, 表现了高度活跃的精子发生, 具有 周期的12个连续阶段和典型的细胞组合, 附睾精子数量亦表现了类似的季节性波 动。图1表3参14

云南盘ju属Discogobio鱼类四新种

报道云南盘ju属鱼类4新种: 多鳞盘juD. polylepis、长鳔盘juD. macrophysallidos、长体盘juD. elongatus和短鳔盘juD. brachyphysallidos。全模标本存中国科学院昆明动物研究所。图4参9

树ju免疫细胞体外感染Ⅰ型人免疫缺陷病毒的实验研究

报告以不同的HIV-1病毒株体外感染树ju免疫细胞的实验研究,结果表明树ju的这些免疫细胞在体外未能感染上HIV-1,可能的原因是树ju的这些免疫细胞的HIV-1受体(CD4)和辅助受体(CCR5或CXCR4)与人的免疫细胞差别较大。

Emission characteristics of three final continuum electrons produced in low-energy double ionization of helium

The double ionization of helium by electron impact for 106 eV incident energy was studied in a kinematically complete experiment by using a reaction microscope. The pattern of the angular correlation of the three emitted electrons was analyzed by selecting different values of the recoil ion longitudinal momentum. The Wannier predicted geometry appears when the recoil ion carries the full initial projectile momentum. It was found that at this low impact energy, the outgoing electrons still remember the initial-state collision information.