... l-gulono-1,4-lactone dehydrogenase of M tuberculosis is a specific enzyme forthe biosynthesis of L-AA As far as we know, this is the first report of a specific biosynthetic enzyme for vitamin C in bacteria ... Experimental procedures SDS ⁄ PAGE revealed the presence of one protein band of about 70 kDa (Fig 1, lane 2) The identity ofthe protein was confirmed by enterokinase treatment After digestion ofthe affinity-purified ... mutants ofthe gene could be obtained [40] The gene is well conserved within the M tuberculosis complex, except forthe M bovis BCG Pasteur (1173P2) strain, which lost the gene due to the deletion of...
... content of 48.0% [43] The GC content ofthe region essential forthe biosynthesis of SPA in the other serotype strains (b–e) of A actinomycetemcomitans is also lower than the average GC content of these ... gene clusters responsible forthe biosynthesis of SPAs of A actinomycetemcomitans serotypes a, b, c, d, and e [23,29,34–36] The gene cluster associated with thesynthesisof SPA in A actinomycetemcomitans ... spectrum ofthe product was at 590.1, which corresponds to the [M + H]+ ion of GDP-6deoxy-D-talose H NMR analysis ofthe structure ofthe purified GDP-6-deoxyhexose Approximately mg ofthe sugar...
... properties ofthe selected solvent can also play an important role for orienting the structural form ofthe final material Lu et al [24] have underlined that the solvothermal synthesisof MnS can ... appear to be important for either thesynthesisof novel materials, the preparation of nanostructured particles for nanotechnologies or the elaboration of bio-inspired materials for applications in ... nature ofthe solvent The chemical composition ofthe precursors must be appropriated to that ofthe target-materials In addition, the concentration ofthe precursors seems to play a role on the...
... once used as the feminine of fox by the Southern-English For fox they said vox; for fromthey said vram; and forthe older word fat they said vat, as in wine vat Hence vixen is for fyxen, from the ... are used as common in either of two ways:— (1) The origin of a thing is usedforthe thing itself: that is, the name ofthe inventor may be applied to the thing invented, as a davy, meaning the ... How the possessive is formed 62.As said before (Sec 56), there are only two case forms One is the simple form of a word, expressing the relations of nominative and objective; the other is formed...
... ethylene glycol were found to be highly promising for water-splitting compared with others These methods forthesynthesisof highly ordered nanotubes can be extended to other metal systems as well ... magnetic stirring The saturation of current with time indicates the development of repassivation, the saturation of nanotube formation These results are in line with the findings of our FESEM studies ... formation continuing until repassivation occurs [17,19] Nanotube formation goes through the diffusion of F− ions and simultaneous effusion ofthe [TiF6 ]2− ions The faster rate of formation of...
... emulsions for detoxification of pesticides suitable process forsynthesisof nanoparticles [1] Certain disadvantages exist with the use is using of Co-Precipitation method [28, 29] of these adsorbents ... These substances also control both towards the toxicants makes them the potential the reduction rate of metal ions and the materials forthe decomposition applications agglomeration process of ... Chem Res., 7, 4, 39-49 (2013) 41 high performance forthe decomposition ofthe final temperature (for min); the temperature 2-CEPS was increased at rate of 20 oC/ for 13 Also, detector temperature...
... from the semiconductor, the holes can diffuse to the surface ofthe semiconductor and cause oxidation ofthe organic dye Therefore, a high density of surface oxygen defects is beneficial for efficient ... very high concentration of OH is present in the aqueous medium Following the decrease in the concentration of Zn(OH)42 due to the initial fast nucleation of ZnO, the absorption of OH ions on the ... (a–e) are the high- magnification images ofthe corresponding ZnO samples Fig Schematic illustration ofthe formation process ofthe 3D flower-like ZnO Fig (a) Bar graph illustration ofthe photocatalytic...
... in high vacuum to furnish the pure oxime in 60-98% yield 90 Page of run might be due to the loss of active sites ofthe catalyst Conclusions To the best of our knowledge, Bi O has never been used ... used in thesynthesisof oximes earlier In conclusion, the reported procedure is an interesting, extremely simple, suitable, fast, efficient, and novel method forthe preparation of oximes The methodology ... grounded in a mortar with a pestle forthe required period of time On completion ofthe reaction as Table Reusability of Bi2O3 in the preparation of 2b using 60 mol% ofthe catalyst Entry Run number...
... distribution The inset of (b) shows the Au nanoparticle The inset of (c) corresponds to the EDX analysis ofthe Si NWs shows the histogram plot forthe diameter distribution ofthe synthesized Si ... the pores ofthe AAO mask and will be responsible forthe constant dimensions ofthe synthesized nanowires Figure shows the surface ofthe AAO-Si substrate, once the Figure Diagram ofthe CVD system ... growth The Si used in the growth process of nanowires is obtained from thermally generated defects on the surface of Si (100) These defects can be observed subsequently to thesynthesisof Si...
... varying the implantation parameters and annealing condition The dependence of implantation energy forthe formation and evolution of Ge-NCs in these stack structures were studied further Experimental ... In the images, the surface of SiN layer is indicated by a white line accumulation layer ofthe substrate), resulting in a shift ofthe C-V curve toward negative voltages [21,22] In general, the ... no Ge-NC was observed for sample A3 The SiN layer underwent a swelling of about nm, whereas the thickness ofthe underlying HfO and SiO layers remain almost the same as in the as-deposited sample...
... on the percentage of fully brown beans in the cut test 6: The effect of spreading of beans for two hours, prior to placement in boxes, on fermentation temperatures 7: The effect of spreading of ... case of larger quantities of beans e.g 250kg, partitioned boxes (Illustration 13) are used In this case, turning of beans is performed by shovelling them from one side ofthe partition to the other ... reveals the presence of certain defects which may cause off-flavours and indicates the degree of fermentation ofthe beans which has a bearing on the flavour and quality ofthe beans The International...
... potential forthesynthesisof optically pure βamino acids These pyridoxal 5’-dependent enzymes catalyze the transfer of an amino group from a donor substrate to an acceptor, thus enabling thesynthesis ... Advantages in the use of TAs lie in mostly low-cost substrates, no necessity for external cofactor recycling and the enzymes’ high enantioselectivity and reaction rate Forthesynthesisof enantiopure ... of Lys258 then acts as a catalyst forthe 1,3-prototropic shift to form the ketimine The ketimine is hydrolyzed to yield the keto acid and PMP The following second half reaction consists of the...
... study the influence of growth temperature on the purity of prepared tube samples, we give the curve (Fig 4) showing the dependence of ID/IG on the growth temperature From Fig 4, two kinds of ID/IG ... temperature was raised to the setting value in Ar atmosphere at a flow rate of 200 mL/min before CH4 was introduced into the reactor at 60 mL/min for 30 min, then CH4 was turned off and the furnace was ... The data show no SWCNTs are formed and there are only poorly multi-walled carbon nanotubes (MWCNTs) and organized carbon in the sample The relatively high intensity ofthe D band relative to G band...
... producing hazardous waste Therefore, the technique could be extended and expanded to provide a general simple and convenient strategy forthesynthesisof nanostructures of other functional materials ... temperature The solubility and the reactivity ofthe reactants also change at high pressures and high temperatures, and high pressure is favorable for crystallizations Based on the corrosion theory, ... knowledge, this is the first report ofsynthesis where water is used as a solvent as well as a source of oxygen Our studies lay down a convenient producer forthesynthesisof NiO nanostructures at low...
... of a widely used real-time industrial application The core component ofthe algorithm is the selection and the extraction ofthe features best describing the image contents The first step ofthe ... illuminations must be usedfor covering the complete circumference of a metallic cylinder The number NC of needed cameras depends not only on the diameter ofthe object DO , the width ofthe ray aperture’s ... structured light forthe purpose of specular cylindrical surfaces inspection The deflection ofthe light rays is used without measuring the deformation ofthe projected rays in the recording sensor,...
... spectra ofthe alloy-filled MWNTs (Fig 2a) showed the presence of Zr, Cr, Fe and Ni; the constituents ofthe alloy, with a composition comparable to that ofthe initial alloy usedforthe preparation ... Dependence of carbon yield on the reaction temperature be through the precipitation of carbon in the form of MWNTs from the molten catalytic particles The melting temperatures ofthe alloy-C ... 388.9 cm–1, in addition to the G- and Dbands The increase in the intensity of D-band for Nifilled MWNTs is due to the non-uniform filling of Ni, resulting in increased degree of disorderness Alloy nanowire...
... physical procedures An analysis ofthe experimental conditions used in thesynthesisof ACs has been made attending to the carbon specific surface area Also, the advantages and disadvantages of each ... Precursors Used in theSynthesisof Activated CarbonCharacterization Techniques and Applications in the Wastewater Treatment Thermal Treatments and Activation Procedures Used in the Preparation of Activated ... described below 3.1 Activating agent H3PO4 is the most commonly used chemical agent forsynthesisof activated carbon The use of ZnCl2 has declined because ofthe environmental pollution problems with...
... controlled by the properties ofthe goods Solving the problem was therefore divided into two steps; the analysis ofthe buyers’ preference and the incorporation ofthe qualities ofthe goods (i.e ... the price should increase with the growing preference for specific goods The link to the qualities ofthe goods’ is eventually formed by the fact that the consumer preferences themselves are often ... prediction forthe main or forthe independent test data set (Tab V) When compared to the performance ofthe model without the buyers’ preference (one-stage approach) the results ofthe two-stage...
... when the frequency ofthe high- risk group is lower than, equal to or higher than the disease risk The frequency ofthe high- risk group is defined as the proportion of individuals with a number of ... at high risk The frequency ofthe population at high risk is defined as the proportion of individuals with a number of risk alleles equal to or higher than the chosen threshold The graphs in the ... being at high- risk will remain free of disease All measures are presented against cut-off values and the percentage of individuals at high- risk to examine the impact ofthe frequency ofthe high- risk...
... affected by the type of HRWRA, the dosage used, the simultaneous use of a C 494 Type A, B, or D admixture, the type and brand of cement, the class of concrete, and the concrete temperature These factors ... by the type of placing method used and the size ofthe structural member being constructed When the w/cm is below 0.35, HRWRAs are often added at the plant to assure control ofthe water, and then ... true forthe initial time of setting In most cases, the higher the dosage rate of HRWRA, the greater the retardation in setting It is necessary for manufacturers to provide an acceptable range of...