论文部分内容阅读
,Lagrange-Noether method for solving second-order differential equations
【机 构】
:
Faculty of Science,Beijing Institute of Technology,Beijing 100081,China“,”Faculty of Science,North C
【出 处】
:
中国物理B(英文版)
【发表日期】
:
2009年9期
其他文献
20101021独秀系列柴油机活塞独秀系列柴油机活塞,是铝合金制柴油机曲柄连杆机构零件,具有机械强度高、耐高温、耐腐蚀和使用寿命长等特点。主要技术参数
20101021 Dusun Ser
期刊
,Stochastic resonance in a single-mode laser driven by frequency modulated signal and coloured noise
By adding frequency modulated signals to the intensity equation of gain-noise model of the single-mode laser driven by two coloured noises which are correlated,
大豆高抗灰斑病品种与抗性不同的品种杂交,F_1代各个组合的灰斑病粒率均表现高抗,其病粒率值的大小与另一亲本的抗性程度呈正相关,并相关极显著。中抗品种与感病品种杂交,或
This paper studies the interactions between two and more adjacent chirped soliton-like pulses, respectively. The results show that the pulses present strong int
为了探讨稻草全量还田对水稻生长和土壤肥力的影响,于2010-2011年开展了稻草全量还田和烧灰还田对双季稻生长发育、产量及品质,以及土壤养分供应、利用和生物学性状等方面影响的系统研究,以阐明在等量施肥条件下稻草还田与土壤肥力及水稻生长发育规律的关系。主要研究结果如下:1.稻草全量还田对水稻生长的影响稻草还田2年4季后,早、晚稻产量施肥处理稻草全量还田(NPK+S)显著高于稻草不还田(NPK),稍低
,An efficient deterministic secure quantum communication scheme based on cluster states and identity
A novel efficient deterministic secure quantum communication scheme based on four-qubit cluster states and single-photon identity authentication is proposed. In
,Influence of spherical aberrations on fundamental mode beam quality under different laser resonator
Spherical aberrations of the thermal lens of the active media are severe when solid state lasers are strongly pumped.The fundamental mode profile deteriorates d
Broadening soybean genetic basis inthe northeast of ChinaBroadeningsoybeangeneticbasisinthenortheastofChina¥WangJinling(Soybe...
Broadening soybean genetic basis inthe northeast of ChinaBroadeningsoybeangeneticbasisinthenortheastofChina ¥ WangJinling (So
,Characteristic analysis of the optical delay in frequency response of resonant cavity enhanced (RCE
With consideration of the modulation frequency of the input lightwave itself, we present a new model to calculate the quantum efficiency of RCE p-i-n photodetec