structure of the atom review
Bài giảng Chapter 7 The Quantum-Mechanical Model of the Atom
... measure of how intense the light is – the larger the amplitude, the brighter the lightã the wavelength, () is a measure of the distance covered by the wave the distance from one crest to the ... proportional to the amplitude and frequency of the waves the larger the wave amplitude, the more force it has the more frequently the waves strike, the more total force there is Tro, Chemistry: ... Wavesã the frequency, () is the number of waves that pass a point in a given period of time the number of waves = number of cyclesunits are hertz, (Hz) or cycles/s = s-11 Hz = 1 s-1ãthe...
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Tài liệu Báo cáo khoa học: Crystal structure of the cambialistic superoxide dismutase from Aeropyrum pernix K1 – insights into the enzyme mechanism and stability pdf
... counted the interactions, we excluded all residuesinvolved in the binding of the metal cofactor.ApeSODs in different forms were superimposed with the least square fit of Ca atoms of the residues ... the ter-tiary structure of ApeSOD has not been elucidated.In the present study, for the first time, we describe the crystal structure of ApeSOD. In particular, we focuson the coordination of ... ligand,NE2 of His31, bound to the metal, in the company of a water oxygen, from the apical positions. The manga-nese was only 0.06 A˚out of the equatorial plane(Table 3). The angles around the metal...
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Tài liệu Inequalities in Higher Education and the Structure of the Labour Market pdf
... especiallythosewhoholdgeneralbachelor’sdegrees,theirqualificationsserveonlyasasignal of theirpotentialtoemployers.Inmanycases,theytakelongertorealiseemploymentandwhentheydotheirentryleveljobsdonotnecessarilyrequire the years of schoolingtheypossess.Theystartat the bottom of the jobladderandhavetoprovethemselvesin the labourmarkettoreachhigherincomelevels.Acombination of theirpotentialandtrainingwilldeterminetheirprogressionup the ladder.Aswillbeseenin the nextsection, the field of study,whichsignals the type of skillsacquiredthrougheducation,playsasignificantroleinemployability of universitygraduatesinthiscase.PercyMolekeFree ... 4PercyMoleke5InequalitiesinHigherEducationand the Structure of the LabourMarketDespite the observedsignificantincreasesin the number of seniorcertificateholdersin the pastdecade, the proportion of learnerswhoactuallysitfor the examremainslow. The quality of the seniorcertificateexamalsocontinuestobe of concern. The largemajority of learnersstillopttowrite the seniorcertificateexamon the standardgraderatherthanon the highergrade.Consequently, the proportion of thosepassingwith ... 14PercyMoleke15InequalitiesinHigherEducationand the Structure of the LabourMarketineducationorin the labourmarket,havedonelittletoaddress the inequalities of the past. The lack of labour marketinformation...
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Tài liệu High-level Expert Group on reforming the structure of the EU banking sector docx
... to the intensification of the sovereign debt crisis in the euro area. The pricing of risk in the repo market has become more dependent on the geographic origin of both the counterparty and the ... maintaining the integrity of the single market. Finally, Chapter 5 draws together the analysis of the previous chapters. It reiterates the importance of banks in the EU economy, summarises the key ... mandate, the Group also expects the on-going fundamental review of the trading book by the Basel Committee to improve the control of market risk within the banking system. The Group sees the Commission's...
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Tài liệu Báo cáo khoa học: Structure of the putative 32 kDa myrosinase-binding protein from Arabidopsis (At3g16450.1) determined by SAIL-NMR docx
... of SAILFig. 3. Secondary structure of At3g16450.1. (A) Ribbon representa-tion of the NMR structure of At3g16450.1. These figures were pre-pared usingMOLMOL [25]. Due to the lack of NOEs, the ... constraints.Solution structure of SAIL At3g16450.1Assignment of the NOE peaks of At3g16450.1 and the structure determination were accomplished by use of the cyana program [17,18]. The structural statistics ... Three-dimensional NMR structure of At3g16450.1. (A)Superposition of the 20 energy-minimized conformers that repre-sent the 3D solution structure of the N-terminal domain. (B) Super-position of conformers...
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Tài liệu Báo cáo khoa học: Crystal structure of the catalytic domain of DESC1, a new member of the type II transmembrane serine proteinase family pptx
... revealsthat the most similar regions of these proteinases medi-ate interaction of the two b-barrels, formation of the catalytic machinery and structures required for binding of the main chain of the ... Asp189 at the bottom of the pocket determines the specificity of the S1 pocket for basic residues Argand Lys at position P1 of the substrate. Consequently,in the DESC1 complex structure the bound ... below). The southern boundary of the active site cleft of DESC1 is formed by the 145autolysis loop. The backbone of this loop differs mark-edly from the other serine proteinases, making the act-ive...
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Tài liệu Báo cáo khoa học: Crystal structure of the BcZBP, a zinc-binding protein from Bacillus cereus doc
... determines the shape of the active site entry. (e) The structure of the active site isessentially identical with the active sites of the MshBand LpxC proteins. The conservation of catalyticallyimportant ... moiety. The proteincoordinates zinc with the Nd atom of His12, one of the Odatoms of Asp15 and the Ne atom of His113.His113 protrudes from helix a4 whereas His12 andAsp15 both belong to the ... studying the correspondingproteins of B. anthracis because it lacks infectiousness of the latter. The objective of the present study is toshed light on the structure, function and the structure function...
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Tài liệu Báo cáo khoa học: Spectroscopic characterization of a higher plant heme oxygenase isoform-1 from Glycine max (soybean) ) coordination structure of the heme complex and catabolism of heme docx
... information on the heme pocket structure. As shown in Table 2, the hyperfine splittingconstants of the 15N nucleus of the distal NO and of the 14N nucleus of the proximal His of the GmHO-1complex ... against the concentration of azide of each solution. The intersectionpoint corresponding to the mole fraction of 0.5 of the respective forms gives the amount of azide necessary toattain the equilibrium, ... characteristics of the heme pocket of GmHO-1 might be associatedwith the smaller values of Kazidefor GmHO-1 andSynHO-1, and with the ferric character of the heme. The Kimidazolevalues of the three...
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Tài liệu Báo cáo khoa học: Unusual metal specificity and structure of the group I ribozyme fromChlamydomonas reinhardtii23S rRNA pptx
... the large P6extension and the last three nucleotides (AU XG) of the intron. The sizes of the intron (InDGb) and 5Â exon (5E) are indicated. The arrowindicates cleavage of the pre-RNA at the ... Because of theseand other properties of Cr.LSU, the tertiary structure of the intron from23S.5DGbwas examined using Fe2+-EDTA cleavage. The ground-state structure shows evidence of an unusually ... minimum of n Mg2+ions leads to formation of the active complex, whereas binding of a minimum of mMn2+ions forms the inactive complex. The sizes of the active and inactive fractions are the result...
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Tài liệu Báo cáo khoa học: Proton transfer in the oxidative half-reaction of pentaerythritol tetranitrate reductase Structure of the reduced enzyme-progesterone complex and the roles of residues Tyr186, His181 and His184 pdf
... confirming that the mutation of Tyr186 to Phe186 does not grossly perturb the overall framework of the enzyme or the active site. The active sites of the enzymes are shown in stick format with the sigmaA ... bond inclose proximity of the N5 atom. A putative flippingmotion of the progesterone molecule along an axisparallel to the FMN plane aligns the C1-C2 with the plane of the isoalloxazine ring ... and is similar to the structure of the oxidized enzyme-inhibitor complex. The reactive C1-C2 unsaturated bond of the steroid is inappropriately orientated with the flavin N5 atom forhydride transfer....
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Tài liệu Báo cáo khoa học: Solution structure of the matrix attachment region-binding domain of chicken MeCP2 ppt
... [18]. The structure of the helicalcoil a2/a3allows us to interpret the consequences of the six mutations. As P153(152) and G162(161) are buried in the protein core, replacement of each of these ... cluster in these two regions. Know-ledge of the structure of a larger portion of MeCP2including the transcriptional repression domain wouldresolve these speculations and clarify the role of the helical ... subsequent structure calculations. These newly calculated structureswere then used for the next step in the iteration process. Thisprocedure was continued until the quality of the structure could...
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Tài liệu Báo cáo khoa học: The structure of the carbohydrate backbone of the lipopolysaccharide from Acinetobacter baumannii strain ATCC 19606 docx
... 269) 427 [26,27]. Then, the biosynthesis of the core region of LPSfrom A. baumannii strain ATCC 19606 should proceed with the introduction of a third Kdo residue to O-5 of the secondKdo. This ... [19]. The mechanism of the transfer of the third Kdo residue has not yet beenidentiđed.In addition to the work on the determination of the chemical and antigenic structures of O-speciđc polysaccha-rides ... genus whichobviously allows novel insights in structure, genetics andbiosynthesis of LPS. Here, the structures of the carbohy-drate backbones of the LPS from A. baumannii strainATCC 19606 are...
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Tài liệu Báo cáo Y học: Structure of the O-polysaccharide and classification of Proteus mirabilis strain G1 in Proteus serogroup O3 potx
... has the Dconfiguration.On the basis of the data obtained, it was concluded that the O-polysaccharide P. mirabilis G1 has the structure shown in Fig. 3. This structure is similar to that of the O-polysaccharide ... experi-ments. The following structure of the polysaccharide wasestablished:whereD-GalA6(L-Lys) stands for Na-(D-galacturonoyl)-L-lysine. The structure of the O-polysaccharide of P. mirabilis ... relatedness of P. mirabilis G1 and S 1959correlated with the similarity of the chemical structures of their O-polysaccharides (Fig. 3). Therefore, it is reasonableto classify P. mirabilis G1 into the...
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Tài liệu Báo cáo Y học: Solution structure of the mEGF/TGFa44250 chimeric growth factor doc
... of the standardcysteine residue in the DYANA library [53]. A pseudoatomwas included instead of the HG atom and a bridge wasformed by superimposition of the pseudoatoms on the SGatoms of the ... found.Several of these were identified in previous studies of EGF,and the backbone fold of the chimera is clearly similar tothose of the EGF structures. The presence of a backbonehydrogen bond from the ... the calculation of the chimera structure, this provides strongevidence that the overall structure is unchanged by the modification of the sequence.Given that the solution structure of mEGF/TGFa44250was...
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