analytical and numerical studies of bose einstein condensates

... reasons, the idea of Bose- Einstein condensation was not paid much attention until superﬂuid He was discovered [72] and until the suggestion of superﬂuid He being a system of Bose- Einstein condensate ... phenomena of interacting manybody system Plenty of theoretical studies on cold dilute atomic gases were carried out and a number of labs were set up to study the properties of BECs The quantity of BEC ... temperature of the order of 100nK is required so that λdB is of the order of interatomic spacing At the same time, a gaseous state of the system has to be maintained to avoid collision of particles...

Analysis and computation for coupling bose einstein condensates in optical resonators

... Analysis and Computation for Coupling Bose- Einstein Condensates in Optical Resonators Xu Wei Biao (B.Sc Sun Yat-Sen University of China) A THESIS SUBMITTED FOR THE DEGREE OF ... Summary Since 1995, Bose- Einstein condensates (BEC) of alkali atoms have been produced and studied extensively in experiments One central goal of experiments has been formation of Bose- Einstein condensates ... useful for uniting BEC in optical resonators at equilibrium We next study the dynamics of two coupling BEC in optical resonators by designing new efficient numerical methods—time-splitting Sine...

Numerical studies of rotating bose einstein condensates via rotating lagrangian coordinates

... 3.9 72 Dynamics of center of mass Left: trajectory of total center of mass Right: the time evolution of center of mass of component one (top), time evolution of center of mass of component two ... 71 Dynamics of center of mass Left: trajectory of total center of mass Right: the time evolution of center of mass of component one (top), time evolution of center of mass of component two (bottom) ... vii 26 LIST OF TABLES viii List of Figures 1.1 Velocity-distribution data of a gas of Rubidium (Rb) atoms, confirming the discovery of a new phase of matter, the Bose- Einstein condensate...

Analytical and numerical thermal buckling analysis investigation of unidirectional and woven reinforcement composite plate structural

... investigation of thermal buckling investigation included evaluated the mechanical and thermal properties of unidirectional and woven reinforcement fiber, then, evaluated of the thermal buckling of composite ... solution of critical buckling temperature of orthotropic unidirectional and woven composite plate with different aspect ratio of plate, volume fraction of reinforcement fiber and types of reinforcement ... evaluated of unidirectional and woven reinforcement composite plate are modulus of elasticity with longitudinal and transverse direction of unidirectional fiber and for woven reinforcement fiber in and...

Experimental and numerical studies on the viscoelastic behavior of living cells

... Literature review 17 contribution of the cell membrane and spectrin network to the large deformation of red cells On the other hand, the continuum modeling approach treats the cell as a continuum material ... EXPERIMENTAL AND NUMERICAL STUDIES ON THE VISCOELASTIC BEHAVIOR OF LIVING CELLS ZHOU ENHUA (B.Eng., WUHEE & M.Eng., WHU) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... that the experimental methodology and theoretical model put forward in this thesis will contribute to a more accurate evaluation of the viscoelastic properties of cells and better understanding of...

Dimension reduction of the gross pitaevskii equation for bose einstein condensates

... dimension reduction of threedimensional (3D) Gross- Pitaevskii equation (GPE) for Bose- Einstein condensates (BEC) in certain limiting trapping frequency regimes As preparation steps, we take the ... analysis of |β2ho − β2 | for dimension reduction from 3D to 2D 13 3.3 Error analysis of 3.4 Error analysis of max |(φ3 )2 − (φho ) | for dimension reduction from |β2ho −β2 | β2 for dimension reduction ... temperatures, of the order of fractions of microkelvins The first evidence for condensation emerged from time -of- flight measurements The atoms were left to expand by switching off the confining trap and then...

Tài liệu Báo cáo khoa học: Structural and functional studies of the human phosphoribosyltransferase domain containing protein 1 docx

... S103 G145/D137 Y 112 D2 01/ 193 L75/67 G145/D137 E1 41/ 133 K173 /16 5 R207 /19 9 G77/69 D142 /13 4 G197 /18 9 Fig Superposition of PRTFDC1 with HPRT-ImmGP (Protein Data Bank code: 1BZY) (A) Residues in the ... Welin et al Studies of the human PRTFDC1 B A PRTFDC1 25 HPRT 20 10 00 0.2 800 600 400 0 .1 200 –50 50 10 10 50 10 015 0 200 250 S 200 –50 250 50 12 00 10 0 15 0 [Hx] (µM) 2.0 PRTFDC1 50 10 0 15 0 200 250 ... 2.0 0 .16 ± 0.02 10 .5 ± 0.9 7.4 · 10 3 ± 1. 9 · 10 3 (0.26%) 2.9 · 10 6 ± 1. 0 · 10 6 (10 0%) 36 .1 ± 14 .3 9.9 ± 0.2 2.9 ± 0.7 899 ± 11 7 1. 36 ± 0.34 406 ± 53 3.9 · 10 4 ± 9.3 · 10 3 (0.09%) 4.5 · 10 7 ± 1. 0...

Tài liệu Báo cáo khoa học: X-ray crystallographic and NMR studies of pantothenate synthetase provide insights into the mechanism of homotropic inhibition by pantoate docx

... robust synthesis of pantothenate from low amounts of pantoate [9] Here, we report the results of the structural studies of the pantoate- bound form of the N-terminal domain of E coli PS (nPS) The structure ... [13] Details of the structural basis for the biochemically observed inhibition of plant PS by pantoate, as well as of the alleviation of this inhibition by another substrate of the enzyme, ATP, ... back to the position of the Fig Superimposition of the A-chain of nPS (green), the B-chain of nPS (cyan), and the substrate-free protein (1IHO.pdb; magenta) The carbon and oxygen atoms of pantoate...

Tài liệu Báo cáo Y học: Molecular modeling of the dimeric structure of human lipoprotein lipase and functional studies of the carboxyl-terminal domain docx

... has already established Of two possible dimeric structures of LPL, the head-tohead and the head-to-tail models, the studies of the chimeric proteins of hepatic lipase and LPL and the tandem repeat ... (Fig 4A and B, 5) The lipase activity of the K413A mutant is similar to that of wild type LPL, whereas the esterase activity is reduced to 60% of the wild type and the model structure displays no ... orientation, the catalytic site in the N-terminal domain of one subunit and the substrate recognition site in the C-terminal domain of the other face each other, thereby bringing together the substrate-binding...

Báo cáo khoa học: Human telomeric G-quadruplex: thermodynamic and kinetic studies of telomeric quadruplex stability potx

... differences in the stability of tethered and free sequences A Kinetics of human telomere quadruplex folding B Fig Thermodynamics of denaturation of human telomere quadruplex structures in buffered ... Form 1103 Telomeric quadruplex stability J B Chaires of the human telomeric quadruplex Similarly, unfolding of quadruplex forms requires only modest expenditures of energy That fact may be of biological ... Physiological relevance of telomeric G -quadruplex formation: a potential drug target BioEssays 29, 155–165 Neidle S (2009) Human telomeric G -quadruplex: The current status of telomeric G-quadruplexes as...

Báo cáo khoa học: Fluorescence quenching and kinetic studies of conformational changes induced by DNA and cAMP binding to cAMP receptor protein from Escherichia coli ppt

... uorescence studies of conformational changes induced by cyclic AMP and DNA binding to cyclic AMP receptor protein from Escherichia coli Eur J Biochem 270, 14131423 Yu S & Lee JC (2004) Role of residue ... changes induced by DNA and cAMP 19 20 21 22 23 24 25 26 27 28 29 30 31 cAMP -induced allosteric changes in T127I, S128A and T127I S128A mutants of cAMP receptor protein from Escherichia coli J ... CRP conformational changes induced by DNA and cAMP i.e free CRP, CRP (cAMP) 2 and CRP (cAMP) 4 In the presence of % 100 lm cAMP, the protein becomes activated by the formation of a CRP (cAMP) 2...

Báo cáo khoa học: Comparative biochemical and functional studies of family I soluble inorganic pyrophosphatases from photosynthetic bacteria potx

... rans phil us Vibrio cholerae Escherichia coli Rickettsia prowazekii Sulfolobus acidocaldarius Aquifex aeolicus Helicobacter pylori B ac Prokaryotic Family I sPPases * Neisseria meningitidis 925 ... (MDLSRIPPQP KAGILNVLIE IPAG), and Rhodop viridis (MRIDA IDXA), and that of Mi aeruginosa NIES-44 (MDL SRKPAQP IPGLKNVLVE TAGSINIT) [16], show a high degree of similarity with other cytosolic sPPases ... biotic and abiotic stress conditions [13,15] This work shows that cyanobacterial strains as well as diverse anoxygenic photosynthetic bacteria possess family I sPPases with different catalytic...

Báo cáo Y học: Unfolding and refolding studies of frutalin, a tetrameric D-galactose binding lectin doc

... spectra for Th and Ch of the Nfrutalin, Ufrutalin, Rfrutalin and Mfrutalin forms Nfrutalin had a minimum at 218 nm and a maximum at 203 nm Ufrutalin had the typical spectrum of the proteins that have ... integrifolia: amino acid sequence, predicted tertiary structure, carbohydrate recognition, and analysis of the beta-prism fold Protein Sci 8, 13–24 Sankaranarayanan, R., Sekar, K., Banerjee, R., Sharma, ... constraint analysis [19,20] as described in Materials and methods, and showed 86% of beta components (antiparallel and parallel b sheet, and b turns) and 16% of other contributions for both the native...

Báo cáo khoa học: Antimicrobial and conformational studies of the active and inactive analogues of the protegrin-1 peptide docx

... activity of the peptides A better understanding of the mode of action of these peptides is crucial for the development of a new generation of antibiotics It is known that, in the absence of both ... at the two spatial tips of the molecule, at the N-terminus with Arg1 and in the turn in the presence of Arg7 and Arg9 (see Figs and 4) The shorter analogue, BM-2, was the most ﬂexible of all the ... mechanistic step in the killing of bacteria [16,20] The conformations of the structural features determining the antimicrobial activity of protegrins Conformational studies of protegrin-1 analogues were...

Báo cáo Y học: Engineering and mechanistic studies of the Arabidopsis FAE1 b-ketoacyl-CoA synthase, FAE1 KCS pot

... Solubilization and puriﬁcation of N-terminus His-tagged FAE1 KCS Fig Hydropathy analysis of FAE1 KCS (A) Hydropathy plot of FAE1 KCS indicating the presence of several hydrophobic regions The position of the ... Taken together, the analysis of the decarboxylation activity and characterization of the mutants of the putative catalytic triad strongly support the hypothesis that the membrane-bound FAE1 KCS shares ... tentatively identiﬁed the active-site cysteine of the jojoba elongase KCS The corresponding cysteine of FAE1 KCS is Cys223 Recently, we conﬁrmed this hypothesis by site-directed mutagenesis of FAE1 KCS...

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