... 00000000 1111111 1111111 0000000 0000000 1111111 0000000 a solid 11 00 nuclei 111electrons 000core 111 000 11 00 111(mass 000ions M, charge +Ze) 11 00 111 000 1111 0000 1111 0000 1111 0000 1111 0000 ... 1111 0000 1111 0000 1111 0000 1111 0000 1111 0000 1111 0000 1111 0000 1111 0000 1111 0000 valence electrons (mass m, charge -e) ệ ắẵ ì ỉ ì ể ề ặ ệ ỉểẹì ẹ ệ ề ềỉể ẹ ỉ é è ểềì ệ ề ề ệ ề ỉ ễệể ìì ...
Ngày tải lên: 17/03/2014, 14:38
... electrons in a static ion lattice 2.1.2 Non-interacting electrons in the jellium model 2.1.3 Non-interacting electrons at nite temperature 2.2 Electron interactions in perturbation ... model in the case of no electron- electron interaction Later in Sec 2.2 we attempt to include this interaction 2.1 THE NON-INTERACTING ELECTRON GAS 2.1.1 33 Bloch theory of electrons in a static ion ... treated in Exercise 1.2 1.4.4 The Coulomb interaction in second quantization The Coulomb interaction operator V is a two-particle operator not involving spin and thus diagonal in the spin indices...
Ngày tải lên: 24/04/2014, 17:13
magnetism in condensed matter
... commutation relations, eqns 1.54 and 1.55 (1.3) Using the definition of the raising and lowering operators in eqns 1.57, prove eqns 1.58, 1.61 16 Introduction (1.4) Using the commutation relation ... Electron spin resonance Mossbauer spectroscopy Muon-spin rotation Interactions 4.1 4.2 Magnetic dipolar interaction Exchange interaction 4.2.1 Origin of exchange 4.2.2 Direct exchange 4.2.3 Indirect ... Competing interactions and low dimensionality 8.1 Frustration 8.2 Spin glasses 8.3 Superparamagnetism 8.4 One-dimensional magnets 8.4.1 Spin chains 8.4.2 Spinons 8.4.3 Haldane chains 8.4.4 Spin-Peierls...
Ngày tải lên: 06/07/2014, 15:45
Tài liệu Báo cáo khoa học: Plasticity of laccase generated by homeologous recombination in yeast docx
... bias in the selection of recombination points It has been suggested that optimal recombination points allow swapping of structural blocks [19], and combination of large protein fragments in our ... substantial increase in kcat Results Homeologous recombination of laccase-encoding sequences Chimeric laccase-encoding sequences were obtained in three independent homeologous intermolecular recombination ... large variations in identity (for example ranging from 38–86% in Coprinopsis cinerea [27]) This natural diversity within in a single organism can be used for protein engineering purpose In Trametes...
Ngày tải lên: 18/02/2014, 06:20
Báo cáo khoa học: Implication for buried polar contacts and ion pairs in hyperthermostable enzymes pot
... that cooperative interaction within the hydrophobic protein core plays an integral role in increasing the thermalstability Another potential stabilizing factor is the high packing density of the ... areas of amino acid residues forming inter- and intrahelix ion pairs are ˚ ˚ 39.5 A2 and 98.9 A2 per residue, respectively This suggests the internal location of interhelix ion pairs in the molecule ... protein could be increased by selected amino acid substitutions that decrease the configurational entropy of unfolding [6] Proline reduces the flexibility of the polypeptide chain The mutations,...
Ngày tải lên: 07/03/2014, 05:20
Báo cáo khoa học: Puroindoline-a and a1-purothionin form ion channels in giant liposomes but exert different toxic actions on murine cells pptx
... (90 min) (30min) (60 min) (120 min) (15 min) (30 min) (90 min) Concentration (time of application) C a c b µm Control 10 µM α1-PTH 10 µM PIN-a of additional monomers will contribute to increase ... fractions by SDS ⁄ PAGE indicated that the PTHs were eluted as a single peak just after the PINs Separate pools of the PTH-containing and PIN-containing crude fractions were dialyzed against deionized ... alpha1purothionin induce nodal swelling in myelinated axons Neuroreport 9, 3803–3807 16 Charnet P, Molle G, Marion D, Rousset M & LullienPellerin V (2003) Puroindolines form ion channels in biological...
Ngày tải lên: 07/03/2014, 12:20
Báo cáo khoa học: Evidence for two different electron transfer pathways in the same enzyme, nitrate reductase A from Escherichia coli potx
... a single quinol-binding site However, the technique used to determine binding sites of quinols, inhibition by HOQNO (a structural analogue of menaquinone), did not allow them to see the binding ... termed QP and QD indicating their positions proximal or distal to the site of fumarate reduction; the use of the quinol-binding site inhibitor HOQNO shows that the inhibitor blocks binding of MQH2 ... site of interaction between the cytochrome and the quinones by studying inhibition of the nitrate reductase activity by HOQNO It has therefore clarified the binding site of the menaquinols, but...
Ngày tải lên: 07/03/2014, 15:20
handbook of condensed matter and materials data (springer, 2005)
... IUPAC International Annealed Copper Standard ion bombardment ion- beam-assisted deposition impact ion scattering spectroscopy International Council of the Scientific Unions inverse photoemission inverse ... the principal physical quantities and maintain the international prototypes; carry out comparison of national and international standards; ensure the coordination of the corresponding measuring ... photoemission inverse photoemission spectroscopy International Organization for Standardization ion scattering spectroscopy International Union of Pure and Applied Chemistry J JDOS joint density of states...
Ngày tải lên: 03/04/2014, 12:18
electron paramagnetic resonance in biochemistry and medicine
Ngày tải lên: 11/04/2014, 00:18
condensed matter and qcd
... wavefunction, but we need a wave function taking into account all the electrons This is made in the BCS theory D Origin of the attractive interaction The problem of getting an attractive interaction ... using a variational principle We start introducing the following normalized trial wavefunction |Ψ |Ψ = cos θ + sin θ a† a† |0 (3.2) The di-fermion operator, a1 a2 , has the following expectation ... all the interactions are irrelevant except for a four-fermi interaction coupling pair of fermions with opposite momenta This is nothing but the interaction giving rise to the BCS condensation This...
Ngày tải lên: 24/04/2014, 17:13
magnetic anisotropies in nanostructured matter, 2009, p.303
... identification and explanation without intent to infringe Library of Congress Cataloging -in- Publication Data Weinberger, P (Peter) Magnetic anisotropies in nanostructured matter / Peter Weinberger ... hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers For permission to photocopy ... LLC Preliminary considerations In preliminary considerations basic denitions concerning frequently used colloquial terminologies are introduced In particular the "geometrical" origin of terms...
Ngày tải lên: 04/06/2014, 14:26
Báo cáo sinh học: " Detection and frequency of recombination in tomato-infecting begomoviruses of South and Southeast Asia" pptx
... new information for understanding the diversity and evolution of tomato-infecting begomoviruses in Asia In addition to evolutionary considerations, understanding the implications of recombination ... variable recombination reported among tomatoinfecting begomoviruses found in the same region Further, recombinant forms, recombination hot spots and frequency of recombination documented in this ... 300 Conclusion 0.20 AV Finally, the variable recombination and diversity-dependent distribution of recombination hotspots in tomatoinfecting begomoviruses is valuable new information that has...
Ngày tải lên: 18/06/2014, 18:20
Electromagnetic Waves Propagation in Complex Matter Part 1 ppt
... Printed in Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechweb.org Electromagnetic Waves Propagation in ... propagation and scattering in soil by solving Maxwell’s equa‐ tions using a finite difference time domain (FDTD) model. The chapter explains how the lossy and dispersive soil medium (in ... the solution of the vector wave equation in cylindrical coordinates for a gyroelectric medium (Ren, 1993) continued that work for spherical coordinates in a similar procedure and obtained spherical...
Ngày tải lên: 19/06/2014, 21:20
Electromagnetic Waves Propagation in Complex Matter Part 2 pdf
... x-axis Using the property of convolution and by considering the inverse Fourier transformation it is possible to get the solution of the Maxwell equations in the form of the sum of two independent ... specific application radiation from a Hertzian dipole in such a medium was examined and the corresponding radiation patterns were presented 12 Electromagnetic Waves Propagation in Complex Matter Electromagnetic ... where integral cosine and integral sine functions are defined by the following formulae: Ci(z) = γ + ln(z) + z cos(t) − dt, t si(z) = z sin(t) π dt − t (47) and Euler constant γ = 0, 5772 Solutions...
Ngày tải lên: 19/06/2014, 21:20
Electromagnetic Waves Propagation in Complex Matter Part 3 docx
... solution of Maxwell equations allows circuitry-engineering modeling of high-frequency radio-engineering devices and investigation of the propagation of electromagnetic waves in media of intricate ... singular integral equations of the second kind which are obtained from the above-indicated systems of functional equations with subsequent computation of Sommerfeld integrals by the saddle-point ... system of functional equations, one determines, in a recurrence manner, sequences of integrand poles and residues in these poles The edge diffraction field in both media is determined using a pair...
Ngày tải lên: 19/06/2014, 21:20