tight binding 中文意思是什麼
tight binding
解釋
緊束縛近似-
Abstract : the effect of correction of self - consistent potential on electronic structure in simple cubic nanocrystal particles is calculated by means of the green ' s function method in the tight - binding approximation, taking only the nearest neighbor matrix elements into account. the numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surface lattice point is the largest
文摘:在緊束縛近似下，只計及最近鄰的矩陣元，採用格林函數計算了自洽勢修正對簡立方納米晶體顆粒的電子結構的影響，發現電子能譜發生了移動，化學勢不等於格點原子能級，各格點的電子密度也發生了變化，其中以表面格點的電子密度變化最大。 -
Abstract : the effects of terbium ion on the conformation of calmodulin and on the interaction between calmodulin and melittin have been studied by the endogenous fluorescent spectrometry of calmodulin and melittin, and the sensitized fluorescent spectrometry of terbium ion, respectively. the results show that terbium ions have a tight binding site in the i and ii metal - binding sites of calmodulin. the conformation of calmodulin induced by terbium ion can bind melittin and transfer the tryptophane residue of melittin to a relatively hydrophobic environment, while the binding of melittin to calmodulin produces effect on the binding orders of terbium ion in camodulin. results from ft - ir spectrometry have revealed that upon binding of lanthanum ion, apo - calmodulin undergoes a conformational change with the increase of - helix content and the decrease of - sheet content. melittin ' s binding to calmodulin has no effect on its conformation induced by the binding of lanthanum ion to calmodulin
文摘:分別用鈣調蛋白和蜂毒素的內源熒光光譜以及鋱離子的敏化熒光光譜考察了鋱離子對鈣調蛋白構象變化以及對鈣調蛋白與蜂毒素相互作用的影響.結果表明，鋱離子首先結合在鈣調蛋白的第和第位點，鋱離子不影響鈣調蛋白與蜂毒素的相互作用，蜂毒素與鈣調蛋白作用后不影響鋱離子在鈣調蛋白上的鍵合順序.傅里葉變換紅外光譜結果表明三價的鑭離子與鈣調蛋白作用使鈣調蛋白的螺旋結構增加，折疊結構減少，與鈣離子對它的二級結構影響相類似.稀土離子在鈣調蛋白-蜂毒素復合體系中主要與鈣調蛋白作用 -
Firstly, the influence of point defects on the density of states and conductance for metallic carbon nanotubes is studied based on the tight - binding model
首先，基於緊束縛模型研究了非磁性點缺陷對金屬型單壁碳納米管態密度和電導的影響。 -
The bulk electronic properties of gaas have been described both by the second - neighbour tight - binding formalism for ( 112 ), ( 113 ) ( 114 ) surface and nearest neighbour tight - binding sp3s * for ( 2 5 11 ) surface
再構后，不考慮表面原子的馳豫變化， gaas （ 2511 ）表面表面態的變化主要表現在o . gev ~ 1 . oev的一些表面態完全消失。 -
Thirdly we introduce the superlattice model with alternating site energies which is more complicated than the simple tight - binding model, and moreover we explore the influence of the alternating diagonal term in hamiltonian on the quasi - energy bands and dynamics
接著引入更為復雜的格點能交替變化的超晶格模型，並在此基礎上考察了hamiltonian中交替變化的對角項對準能譜與動力學的影響。 -
A perturbation method by tight - binding approximation which provide the relation of phase constant and angular spectrum of fields of in - waveguide is presented. the strip width of phase constant can be given. on the other hand, the group delay - time due to the k dispersion in single - mode transmission can also be estimated
提出一種利用緊束縛近似的微擾法計算陣列波導的相位常數與輸入光角譜的關系，由此算出相位常數的帶寬，並利用衍射方法估算單模傳輸中k色散引起的群延時。 -
Intrinsic functions that do not allocate stack space and do not call other functions can use other volatile registers to pass additional register arguments because there is a tight binding between the compiler and the intrinsic function implementation
由於編譯器與內部函數實現之間存在緊密的綁定，因此不分配堆棧空間且不調用其他函數的內部函數可以使用其他易失寄存器來傳遞附加的寄存器參數。 -
Our results are found to differ from those based tight binding ( tb ) but agree with experimental data very well
結果表明，各孤立管能隙值跟緊束縛（ tb ）近似所推出的結論有很大的出入，但跟實驗觀測結果比較接近。
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