排序方式: 共有150条查询结果,搜索用时 15 毫秒
101.
Yin M Lu T Zhao LX Chen Y Huang SX Lohman JR Xu LH Jiang CL Shen B 《Organic letters》2011,13(14):3726-3729
The biosynthetic gene clusters for the Hsp90 inhibitor geldanamycin (GDM, 1) have been cloned previously from three different Streptomyces strains, but the gene encoding the C-17 O-methyltransferase remains unknown. The cloning and sequencing of a new GDM biosynthetic gene cluster from Streptomyces autolyticus CGMCC 0516 was reported, identifying the gdmMT gene that encodes the missing C-17 O-methyltransferase for 1 biosynthesis. 相似文献
102.
Ren-Man Zhu Cheng-Lin Yang Zi-Xuan Chang Cai-Yuan Pan Wen-Jian Zhang Chun-Yan Hong 《中国化学》2022,(4):453-459
The size and size distribution of polymeric nanoparticles have great impact on their physicochemical and biological properties.Polymerization-induced self-assem... 相似文献
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BAI Cheng-Lin 《理论物理通讯》2003,40(8)
For the Noyes-Fields equations, two-dimensional hyperbolic equations of conversation laws, and theBurgers-KdV equation, a class of traveling wave solutions has been obtained by constructing appropriate functiontransformations. The main idea of solving the equations is that nonlinear partial differential equations are changed intosolving algebraic equations. This method has a wide-rangingpracticability. 相似文献
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BAI Cheng-Lin ZHAO Hong 《理论物理通讯》2004,42(8)
In this paper, a new modified extended tanh-function method is presented for constructing soliton-like,periodic form solutions of nonlinear evolution equation (NEEs). This method is more powerful than the extended tanhfunction method [Phys. Lett. A277 (2000) 212] and the moditied extended tanh-function method [Phys. Lett. A285(2001) 355]. Abundant new solutions of two physically important NEEs are obtained by using this method and symbolic computation system Maple. 相似文献
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The multiple soliton solutions of the approximate equations for long water waves and soliton-like solutions for the dispersive
long-wave equations in 2+1 dimensions are constructed by using an extended homogeneous balance method. Solitary wave solutions
are shown to be a special case of the present results. This method is simple and has a wide-ranging practicability, and can
solve a lot of nonlinear partial differential equations. 相似文献
107.
The stimulated Raman scattering competition between solute and solvent in Rhodamine B solution
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The competition between the stimulated resonance Raman scattering(SRRS) of Rhodamine B(RhB) and the stimulated Raman scattering(SRS) of ethanol(C2H5OH) is observed at the RhB in C2H5OH solution.For different concentrations of the solution,the peak wavelengths of the SRRS,the amplified spontaneous emission(ASE),the fluorescence and the absorption of RhB are different.The SRRS of RhB and the SRS of C2H5OH are simultaneously generated when the concentration of the solution is 10 5 mol/L and the energy of the excitation laser is 20.4 mJ.Otherwise,only either the SRRS of RhB or the SRS of C2H5OH is generated.The SRRS can be amplified by the ASE gain when the SRRS is near the peak of the ASE,and the peak wavelength of the SRRS coincides with the wavelength of the maximal intensity ASE. 相似文献
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利用紧束缚分子动力学退火方法模拟研究了Si60团簇的稳定结构和基态能量,结果表明Si60团簇为具有T对称性的截顶二十面体的富勒烯结构,平均键长为0236nm,直径为0933nm,原子结合能为4.45eVatom,JahnTeller效应对Si60团簇的结构有很大影响.通过对Si60分子和Si(111)面碰撞机理的粒子数、体积和能量不变分子动力学模拟,发现Si60分子吸附在Si(111)面所需要的垂直入射动能为40eV,Si60分子远不如C60分子稳定
关键词:
紧束缚
JahnTeller效应
碰撞 相似文献