AQA 8464f SOW ATOMIC

Tài liệu Chapter XXII Atomic Structure pptx

Tài liệu Chapter XXII Atomic Structure pptx
... Chapter XXII Atomic Structure §1 §2 §3 §4 Hydrogen atom Angular momentum of electron Electron spin Many-electron ... E2 U(r) we have hc  E photon -15 -15 1240eV  nm   656nm 1.9eV Atomic hydrogen  (nm)  Note: The ionization energy of atomic hydrogen at its ground state is  En     6eV E E E 13 ... where the added electrons go (2l +1) orbitals Z = atomic number = number of protons label s 1 l 1s22s22p63s1 p d f Handy pocket guide for filling Atomic Orbitals Due to electron-electron interactions,...
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Tài liệu Colchero, J. et al. “Friction on an Atomic Scale”Handbook of Micro and Nano Tribology P6 Handbook of Micro/Nanotribology. Ed. Bharat ppt

Tài liệu Colchero, J. et al. “Friction on an Atomic Scale”Handbook of Micro and Nano Tribology P6 Handbook of Micro/Nanotribology. Ed. Bharat ppt
... Films and Boundary Lubrication • Nanocontacts • Quartz Microbalance Experiments in Tribology 6.4 Modeling of an SFFM Resolution in SFFM • Deformation of Tip and Sample • Modeling of SFM and SFFM: ... Akamine et al., 1990; Wolter et al., 1991) and, on the other hand, to new detection schemes, in particular to the optical beam deflection method (Meyer and Amer, 1988, 1990b; Alexander et al., 1989; ... aspects of friction on an atomic scale (Zhong and Tománek, 1990; Tománek et al., 1991; Colchero and Marti, 1995; Colchero et al., 1996b; Gyalog et al., 1995) These models can be considered an extension...
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Tài liệu Báo cáo " The establishment of the Vietnam atomic time scale " docx

Tài liệu Báo cáo
... discussed in reference to "ideal time ," referring to a perfectly steady time scale, and to the simple term "time ," which refers to actual time, which is offset from ideal time Ideal time is purely conceptual ... successfulness of creating Vietnam average time scale not only to combines three of atomic clocks in order to have time scale which is more stable but also to create the foundation of creating a time scale ... any discussion of an algorithm of ensemble atomic time: The measurement errors of the time difference X ij between the clocks must be negligibly small compared to the noise of the clocks Each...
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Tài liệu Types of Atomic & Molecular Bonds pptx

Tài liệu Types of Atomic & Molecular Bonds pptx
... (1923) Types of Atomic & Molecular Bonds Primary Atomic Bonds IMPORTANT!!! Ionic Bonds Covalent Bonds Metallic Bonds Secondary Atomic & Molecular Bonds Permanent Dipole Bonds Fluctuating Dipole Bonds ... Types of Atomic & Molecular Bonds Objectives of the class Develop a sense of history of scientific thinking Explain the types of bonds You should be able to have ... gain of matter Dalton: concept of atomic mass (1808) Mendelev: periodic table of elements (1869) Moseley: showed that the number of electrons = number of protons (atomic number) Discovery of X-rays...
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Tài liệu Protein Data Bank Contents Guide: Atomic Coordinate Entry Format Description Version 3.20 Document Published by the wwPDB ppt

Tài liệu Protein Data Bank Contents Guide: Atomic Coordinate Entry Format Description Version 3.20 Document Published by the wwPDB ppt
... related related related related related related entry entry entry entry entry entry entry entry entry entry entry entry entry entry Details * The SPLIT record can be continued on multiple lines, ... guide describes the "PDB format" used by the members of the worldwide Protein Data Bank (wwPDB; Berman, H.M., Henrick, K and Nakamura, H Announcing the worldwide Protein Data Bank Nat Struct ... superseded entry entry entry entry entry entry entry entry entry Details * The ID code list is terminated by the first blank sIdCode field Verification/Validation/Value Authority Control wwPDB checks...
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Tài liệu Báo cáo khoa học: Dimers of light-harvesting complex 2 from Rhodobacter sphaeroides characterized in reconstituted 2D crystals with atomic force microscopy docx

Tài liệu Báo cáo khoa học: Dimers of light-harvesting complex 2 from Rhodobacter sphaeroides characterized in reconstituted 2D crystals with atomic force microscopy docx
... protruding LH2 rings, approximately 120 ° (Fig 2A) and 90° (Fig 2B), indicated two types of zig-zag lattice The inset of Fig 2A shows a high-magnification image of LH2 rings embedded in the 2D crystals ... 7.0 15.0 7.0 12. 0 E 5.3 7.1 10.9 LH2 density (µm 2) F 22 000 21 20 8 21 22 4 21 000 20 408 20 000 19 047 19 000 18 367 Strongly protruding LH2 (up) 18 000 A B C D E up-LH2’s [27 ] In that case, ... by atomic force microscopy Biophys J 84, 24 83 24 91 ´ 23 Goncalves RP, Busselez J, Levy D, Seguin J & Scheur¸ ing S (20 05) Membrane insertion of Rhodopseudomonas 3166 24 25 26 27 28 29 30 31 32...
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Tài liệu Early Atomic Models – From Mechanical to Quantum (1904-1913) pptx

Tài liệu Early Atomic Models – From Mechanical to Quantum (1904-1913) pptx
... both  proportional to   N    This  implies  for  atoms  with  a  large  value  of  N0  that   the  dominant  contribution to  the  total  scattering  would  be from  the  positive  sphere, ... would   correspond   to   the   α-­‐particle   having   an   atomic   weight   of   3.84,   very   close   to   the   atomic  weight  of  helium  at  3.96     “Taking  into  account  probable ... papers from Rankine (1849-50) on "Molecular Vortices" Kragh, H 2012 Niels Bohr and the Quantum Atom, Oxford University Press, Oxford Heilbron, J L 1981 Historical Studies in the Theory of Atomic...
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Báo cáo "Correlation Effects in Atomic Thermal Vibration of fcc Crystals " pdf

Báo cáo
... Correlation effects in atomic thermal vibration of fcc crystals 27 The purpose of this work is to study the correlation effects in atomic vibrations of fcc crystals in XAFS, i.e., to develop ... vibrate under influence of the neighboring environment Taking into account the influences of the nearest atomic neighbors the Einstein effective interaction potential for single vibrating atom is ... Correlation effects in atomic thermal vibration of fcc crystals 31 The effective spring constants, the Einstein frequencies and temperatures change significantly when the correlation is included...
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ATOMIC ABSORPTION SPECTROMETRY IN WINE ANALYSIS – A REVIEW pot

ATOMIC ABSORPTION SPECTROMETRY IN WINE ANALYSIS – A REVIEW pot
... Cu: potentiometry, ISE 82 FAAS 121 ETAAS FAAS Sequential injection analysis by FAAS FAAS 131 122 123 FAAS 124 FAAS Electrochemical Fe(II) FAAS 125 128 26 T Stafilov, I Karadjova QUALITY ASSURANCE ... Pyrzynska, Determination of vanadium content in wine by GF AAS, Chem Anal.-Warsaw, 47, 44 9–4 55 (2002) [62] S Catarino, A S Curvelo-Garcia, R B de Sousa, Determination of aluminium in wine by graphite ... HG and CV methods combined with AAS and ETAAS are presented Maced J Chem Chem Eng., 28 (1), 1 7–3 1 (2009) 21 Atomic absorption spectrometry in wine analysis Table The application of ETAAS in wine...
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Vật lý A level:AQA PHYA1 QP JAN12

Vật lý A level:AQA PHYA1 QP JAN12
... metal wire and asked to investigate how the resistance of the wire changes between a temperature of o C and 100 o C (a) (i) Draw a labelled diagram of a suitable arrangement that would enable the ... necessary for a photon to cause the ionisation of a hydrogen atom Give your answer to an appropriate number of significant figures answer Hz (4 marks) 12 (a) A student is given a piece of metal ... structure charge uud Sigma + uus strangeness baryon number +1 ud 0 (7 marks) (b) Each of the particles in the table has an antiparticle (b) (i) Give one example of a baryon particle and its corresponding...
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Vật lý A level:AQA PHYA1 w MS JAN10

Vật lý A level:AQA PHYA1 w MS JAN10
... and that every examiner understands and applies it in the same correct way As preparation for the standardisation meeting each examiner analyses a number of candidates’ scripts: alternative answers ... details will change, depending on the content of a particular examination paper Further copies of this Mark Scheme are available to download from the AQA Website: www.aqa.org.uk Copyright © 2010 AQA ... Such answers without an ‘overview’ paragraph in the answer would be unlikely to score in the top band An arithmetical error in an answer will cause the candidate to lose one mark and should be annotated...
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Vật lý A level:AQA PHYA1 w MS JAN11

Vật lý A level:AQA PHYA1 w MS JAN11
... Such answers without an ‘overview’ paragraph in the answer would be unlikely to score in the top band An arithmetical error in an answer will cause the candidate to lose one mark and should be annotated ... Qualifications Alliance The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee registered in England and Wales (company number 3644723) and a registered charity (registered charity ... candidates’ responses to questions and that every examiner understands and applies it in the same correct way As preparation for standardisation each examiner analyses a number of candidates’...
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Vật lý A level:AQA PHYA1 w MS JAN12

Vật lý A level:AQA PHYA1 w MS JAN12
... measured calculated • water bath used • ice added to water • water stirred • temperature measured with thermometer • resistance calculated • graph drawn the temperature at or below which a material ... questions and that every examiner understands and applies it in the same correct way As preparation for standardisation each examiner analyses a number of students’ scripts: alternative answers not already ... voltmeter ammeter method The wire is heated in a beaker of water and the temperature measured with a thermometer max Mark Scheme – General Certificate of Education (A- level) Physics A PHYA1 – January...
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Vật lý A level:AQA PHYA1 w MS JUN10

Vật lý A level:AQA PHYA1 w MS JUN10
... and that every examiner understands and applies it in the same correct way As preparation for the standardisation meeting each examiner analyses a number of candidates’ scripts: alternative answers ... details will change, depending on the content of a particular examination paper Further copies of this Mark Scheme are available to download from the AQA Website: www.aqa.org.uk Copyright © 2010 AQA ... Such answers without an ‘overview’ paragraph in the answer would be unlikely to score in the top band An arithmetical error in an answer will cause the candidate to lose one mark and should be annotated...
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