the states of matter

... but the same mass The essential difference between the three states of matter is the freedom of the particles to move past one another If the average separation of the particles is large, there ... arises from the impact of the particles: they batter the inside surface of the piston and counter the battering of the molecules in the atmosphere that is pressing on the outside surface of the piston ... chemistry is the branch of chemistry that establishes and develops the principles of chemistry in terms of the underlying concepts of physics and the language of mathematics The states of matter are...

Ngày tải lên: 07/05/2014, 16:40

... saved the GUI Add directory to the top of the MATLAB path — adds the directory where you saved the GUI to the top of the MATLAB path Add directory to the bottom of the MATLAB path — adds the directory ... of the original 3-18 Using the Layout Editor • Right-click and drag the component to the desired location The position of the cursor when you drop the components determines the parent of all the ... in the layout area where you want the upper-left corner of the component to be, then set the size of the control by clicking and dragging the cursor to the lower-left corner before releasing the...

Ngày tải lên: 29/09/2013, 20:20

... function of the conductivity and chemical nature of the substrate, as well as of the tip–substrate distance The images thus obtained offer valuable insights into the microdistribution of the electrochemical ... generated at the substrate The distribution of the electrochemical activity of the surface can thus be mapped The submicron resolution of SECM images is controlled by the size and shape of the tip, ... from the surface) The peak ratio ip,r/ip,f will thus be smaller than unity; the exact value of the peak ratio can be used to estimate the rate constant of the chemical step In the extreme case, the...

Ngày tải lên: 25/10/2013, 08:20

... Subsequent stations form the bottom two corners (3) of the shape No cold working of the sides of the shape is performed, and the shape’s seam is welded by high-frequency contacts when the tube is near ... of inertia of cross-section (mm4) Moment of inertia of cross-section about the X-X axis (mm4) Moment of inertia of cross-section about the Y-Y axis (mm4) Torsional stiffness constant of cross-section ... complete the square or rectangular section (5) 1 FOREWORD The International System of units (System International or ‘SI’) has been adopted as the preferred system of measurement in the United States...

Ngày tải lên: 22/12/2013, 16:15

... intercepts of the plane along the axes in units of lattice constants (3) Take the reciprocal of the intercepts and reduce them to the smallest integers The notation (hkl) denotes a family of parallel ... six other similar triangles There are also atoms along the edges of the triangle which are shared by two adjacent triangles Thus the number of atoms in the triangle are 3 + =2 The area of the ... Calculate the planar density of atoms on the (111) surface of Ge As can be seen from Fig 1.13, we can form a triangle on the (111) surface There are three atoms on the tips of the triangle These...

Ngày tải lên: 24/01/2014, 17:34

... of ferrites Ni1-xCoxFe2O4, hence it was the increasing of HC The increasing of HC proved that the soft magnetic property of ferrite NiFe2O4 changed to the hard magnetic property of ferrite CoFe2O4 ... (3) where B2θ is the full width half maximum (rad), λ the wavelength of the X-ray, θ the angle between the incident and diffracted beams (degree) and d the particle size of the sample (nm) (in ... materials, the second term can take part of several tens percent of HC and the last one whereas can only reach several hundreds of gauss Thus, the increasing of Co-concentration led to the increasing of...

Ngày tải lên: 13/02/2014, 04:20

... independently of the presence of AREs (Fig 6B, lanes and 5) It is possible that in the region located before the AREs, consisting of 343 bp of the 3¢ UTR of the IL-1b transcript, there is a putative ... contained 343 bp of the 3¢ UTR region (nucleotides 898–1227 of the 3¢ UTR region) The construct encoding IL-1b cDNA with AREs (IL1+ARE) contained 423 bp of the 3¢ UTR (nucleotides 898–1318 of the 3¢ UTR ... degradation of IL-1b mRNA and also of its own transcript For this reason, the level of mRNA for the wildtype form of MCPIP and the level of mRNA for IL-1b (Fig 5A, lane 3) were lower in comparison to the...

Ngày tải lên: 18/02/2014, 14:20

... properties of trappin-2 involve the cationic nature of the molecule, as assessed from the salt and heparin dependence of the antimicrobial and antifungal effects Results Antimicrobial effects of recombinant ... source of nitrogen [15], thereby competing with the antibacterial effect of trappin-2 However, none of the bacteria tested destroyed trappin-2 in the incubation mixtures, suggesting that another, ... is blocked in the presence of 0.15 m NaCl [10] The differences in the distribution of positive charges on the surfaces of elafin and SLPI molecules [1] may well be responsible for their different...

Ngày tải lên: 18/02/2014, 17:20

... represents the ionization of Asp128b This being the case, the effect of substrate binding would be to lower the pKa of this group to 6.0 (i.e the value measured in the plot of klim vs pH; Fig 4C) The ... alog (pH ) pKa2), Lim1 is the lower limit of the curve, Lim is the middle limit of the curve and Lim is the upper limit of the curve Stopped-flow kinetic studies of the oxidative half-reaction ... observed for the native enzyme The migration of both subunits is consistent with the predicted masses of the mature form of the subunits (14 472 and 40 421 Da 5896 Fig Purification of recombinant...

Ngày tải lên: 19/02/2014, 07:20

... regard, the best combination of the two subunits that match the smallest molecular mass is a2b2 Overnight incubation of the protein in this detergent led to a decrease of the area of the first ... containing the double of NrfA subunit in respect to the NrfH subunit Nevertheless, inside these huge aggregates there are species of the type a2b2 The present findings are in agreement with the reported ... (multiples of 140 kDa) were recognized Furthermore, the SDS/PAGE profile suggested the existence of both a2 and b2 dimers Unfortunately, attempts to characterize the oligomeric status of the native...

Ngày tải lên: 21/02/2014, 00:20

... gave the same results The role of LPS in the interaction was also demonstrated by the lack of effect of extracellular Mg2+ on the activity of the peptides against Gram-positive bacteria with the ... facilitating the interaction of the toxin with the inner membrane In the presence of high Mg2+ ions, the MIC of compounds that are taken up via the self-promoted uptake is expected to increase because the ... that there is a high conservation in amino acid sequence of the peptides in the venom of scorpions that belong to the same family, independent of the continent and region were they live Furthermore,...

Ngày tải lên: 21/02/2014, 15:20

... below) The comparison of CD spectra of complexes also points toward slight differences in the conformation of the chelate rings The characteristic alternate pattern of the dd bands in the CD ... complexes of GGH, where the a carbon of the His residue is the sole source of chirality [10] However, while positions of the component dd bands and of CT transitions are relatively constant, their ... via the limitation of conformational freedom of the complex moiety The CD spectra of HSA complexes are intermediate between those of DAHam and DAHKam, suggesting that the conformation of the...

Ngày tải lên: 22/02/2014, 04:20

... increased from the base to the top portion There was no significant variation in Klason lignin content or ash content from the base to the top portion of the bamboo The outer layer had the highest ... between the major chemical composition of node and internode fraction of bamboo are small [Scurlock 2000]; neither the number of nodes nor the length of internode segments would be critical to the ... to the flask The apparatus was placed in a boiling water bath for four hours The flasks were then removed from the water bath and the insoluble material was allowed to settle The contents of the...

Ngày tải lên: 22/02/2014, 09:20

... nano sizes was dispersed inside the pore of support material (a) 3.3 Catalytic activities of Pt/SBA-15 in the oxidation of D-glucose The results of the oxidation of D-glucose carried out on Pt/SBA-15 ... to the larger clusters of platinum with the size measured on HRTEM micrograph at range of 12-15 nm (Fig 3e) were dispersed outside the channels of SBA-15 mesoporous material when the content of ... showed the highest activity and selectivity in the oxidation of glucose When increasing the content of Pt loading, most Pt nanoparticles aggregated outside the channels of SBA-15 with size of 10-15nm...

Ngày tải lên: 05/03/2014, 11:21

... Eqn (7) [20]: koff ẳ koff2ị ẵibuprofen=K2 ẵibuprofenị ỵ koff3ị ẵibuprofen=K3 ẵibuprofenịị ỵ kỵ off 7ị where koff(2) and koff(3) indicate values of koff occurring at K2 < [ibuprofen] < K3, and ... s)1) Ibuprofen binding to tHSAheme-Fe(II)-NO Figure shows the binding isotherm for ibuprofen binding to tHSAheme-Fe(II)-NO Analysis of the dependence of the molar fraction of the ibuprofenbound ... indicates that the removal of domain I from HSA does not signicantly affect the functional and structural properties of domains I and II [i.e of the 1382 region of (t)HSA] l The values of the Hill...

Ngày tải lên: 06/03/2014, 01:20

... affecting one side of the substrate-binding groove of the enzyme (Fig 4B,C) On the side where the nonreducing end of the substrate FEBS Journal 273 (2006) 4889–4900 ª 2006 The Authors Journal ... extension of eight and seven residues respectively (Fig 1) The N-termini of the plant enzymes and the first residue in the ChiG structure (Phe12) (Fig 4A), are located on the opposite side of the enzyme ... superposition of ChiG and the barley enzyme The picture shows a cartoon of the barley enzyme (PDB accession code 2bba; cyan) and the surface of ChiG, with the view being rotated 90° relative to (A) (the...

Ngày tải lên: 07/03/2014, 11:20

... way to the wild type [16,17] The pKa for the alkaline transition being similar to that of the wild type, % 11.1 [18] Finally, comparison of the X-ray structures of the oxidized forms of the native ... disposition of the proximal His and Asp residues, affecting the imidazolate character of the His, but also by the formation of a LS species The latter indicating the probable binding of His42 to the ... strength of the Fe-Im bond but also the stability of the different oxidation states In fact, the potential sensitivity and dependence of enzyme properties on the structural characteristics of the...

Ngày tải lên: 07/03/2014, 21:20

... on the analysis of these compounds The biosynthesis of most plant oxylipins is initiated by the action of lipoxygenases (LOX), which are capable of introducing molecular oxygen at either the ... acid, a 12-hydroxy analog of JA, and their precursors, for example, the biological active OPDA The biosynthesis of JA, and activation of the intermediates by generation of the corresponding CoA esters ... indole-3-acetic acid Thereby, the velocity of the gravitopic movement is seemingly accelerated [51–54] The majority of the effects described by the Nick group are most likely not OPDA specific, but rather mediated...

Ngày tải lên: 16/03/2014, 02:20

... lactate, the activity of LDHB was 86% of the value determined in the absence of lactate, and at 300 mm lactate, the activity of LDHB was only 24% of the same control value Characterization of glucose ... Examination of the model of the R state of LDH shows a much higher density of positive charge in the region of contact between the monomers than in LDHB, particularly in the region of contact ... interpolations the impact of these lactacte dehydrogenase features on the physiology of the organism The metabolism of glucose was monitored by in vivo 13C-NMR under 5928 anaerobic conditions Cells of strain...

Ngày tải lên: 16/03/2014, 05:20

... that recognized either of the ligand-binding sites located in the a2 domain Thus, the antigenic properties of the HC in this region are sufficiently similar to those found in the heterodimeric ... addition, the thermal stability of the shFcRn mutant was demonstrated to generate a midpoint unfolding temperature of 58 °C (data not shown), similar to that of WT (58.5 °C) [33] Mapping of disulfide ... of both hb2m and the hFcRn HCs, the configuration of disulfide bonds was qualitatively investigated using a combination of MALDITOF MS and chemical alkylation of cysteine residues The expected disulfide...

Ngày tải lên: 16/03/2014, 06:20