general procedure used for the synthesis of high silica zeolites
Báo cáo khoa học: Mycobacterium tuberculosis possesses a functional enzyme for the synthesis of vitamin C, L-gulono-1,4-lactone dehydrogenase doc
... l-gulono-1,4-lactone dehydrogenase of M tuberculosis is a specific enzyme for the 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 of the protein was confirmed by enterokinase treatment After digestion of the affinity-purified ... mutants of the gene could be obtained [40] The gene is well conserved within the M tuberculosis complex, except for the M bovis BCG Pasteur (1173P2) strain, which lost the gene due to the deletion of...
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Báo cáo Y học: Guanosine diphosphate-4-keto-6-deoxy-D-mannose reductase in the pathway for the synthesis of GDP-6-deoxy-D-talose in Actinobacillus actinomycetemcomitans potx
... content of 48.0% [43] The GC content of the region essential for the 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 for the biosynthesis of SPAs of A actinomycetemcomitans serotypes a, b, c, d, and e [23,29,34–36] The gene cluster associated with the synthesis of SPA in A actinomycetemcomitans ... spectrum of the product was at 590.1, which corresponds to the [M + H]+ ion of GDP-6deoxy-D-talose H NMR analysis of the structure of the purified GDP-6-deoxyhexose Approximately mg of the sugar...
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solvothermal reactions- an original route for the synthesis of novel materials
... properties of the selected solvent can also play an important role for orienting the structural form of the final material Lu et al [24] have underlined that the solvothermal synthesis of MnS can ... appear to be important for either the synthesis of novel materials, the preparation of nanostructured particles for nanotechnologies or the elaboration of bio-inspired materials for applications in ... nature of the solvent The chemical composition of the precursors must be appropriated to that of the target-materials In addition, the concentration of the precursors seems to play a role on the...
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AN ENGLISH GRAMMAR FOR THE USE OF HIGH SCHOOL, ACADEMY, AND COLLEGE CLASSES pot
... once used as the feminine of fox by the Southern-English For fox they said vox; for fromthey said vram; and for the 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 used for the thing itself: that is, the name of the 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...
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a novel method for the synthesis of titania nanotubes using
... ethylene glycol were found to be highly promising for water-splitting compared with others These methods for the synthesis of 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 of the [TiF6 ]2− ions The faster rate of formation of...
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a novel method for the synthesis of cao nanoparticle
... emulsions for detoxification of pesticides suitable process for synthesis of 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 for the decomposition applications agglomeration process of ... Chem Res., 7, 4, 39-49 (2013) 41 high performance for the decomposition of the final temperature (for min); the temperature 2-CEPS was increased at rate of 20 oC/ for 13 Also, detector temperature...
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solgel based hydrothermal method for the synthesis of 3d flowerlike zno microstructures
... from the semiconductor, the holes can diffuse to the surface of the semiconductor and cause oxidation of the 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 of the corresponding ZnO samples Fig Schematic illustration of the formation process of the 3D flower-like ZnO Fig (a) Bar graph illustration of the photocatalytic...
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Báo cáo hóa học: " A rapid, convenient, solventless green approach for the synthesis of oximes using grindstone chemistry" docx
... 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 of the catalyst Conclusions To the best of our knowledge, Bi O has never been used ... used in the synthesis of oximes earlier In conclusion, the reported procedure is an interesting, extremely simple, suitable, fast, efficient, and novel method for the preparation of oximes The methodology ... grounded in a mortar with a pestle for the required period of time On completion of the reaction as Table Reusability of Bi2O3 in the preparation of 2b using 60 mol% of the catalyst Entry Run number...
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Báo cáo hóa học: " An alternative route for the synthesis of silicon nanowires via porous anodic alumina masks" potx
... distribution The inset of (b) shows the Au nanoparticle The inset of (c) corresponds to the EDX analysis of the Si NWs shows the histogram plot for the diameter distribution of the synthesized Si ... the pores of the AAO mask and will be responsible for the constant dimensions of the synthesized nanowires Figure shows the surface of the AAO-Si substrate, once the Figure Diagram of the 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 the synthesis of Si...
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Báo cáo hóa học: " Effect of ion implantation energy for the synthesis of Ge nanocrystals in SiN films with HfO2/SiO2 stack tunnel dielectrics for memory application" pot
... varying the implantation parameters and annealing condition The dependence of implantation energy for the 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 of the substrate), resulting in a shift of the 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 of the underlying HfO and SiO layers remain almost the same as in the as-deposited sample...
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Cocoa Processing Methods for the Production of High Quality Cocoa in Vietnam ppt
... 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 of the partition to the other ... reveals the presence of certain defects which may cause off-flavours and indicates the degree of fermentation of the beans which has a bearing on the flavour and quality of the beans The International...
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báo cáo hóa học:" Minireview: Transaminases for the synthesis of enantiopure beta-amino acids" doc
... potential for the synthesis of 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 the synthesis ... 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 For the synthesis of enantiopure ... of Lys258 then acts as a catalyst for the 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...
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Báo cáo hóa học: " A Temperature Window for the Synthesis of Single-Walled Carbon Nanotubes by Catalytic Chemical Vapor Deposition of CH4 over Mo2-Fe10/MgO Catalyst" pptx
... 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 of the D band relative to G band...
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Báo cáo hóa học: " A Versatile Route for the Synthesis of Nickel Oxide Nanostructures Without Organics at Low Temperature" doc
... producing hazardous waste Therefore, the technique could be extended and expanded to provide a general simple and convenient strategy for the synthesis of nanostructures of other functional materials ... temperature The solubility and the reactivity of the 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 of synthesis where water is used as a solvent as well as a source of oxygen Our studies lay down a convenient producer for the synthesis of NiO nanostructures at low...
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Báo cáo hóa học: " Research Article New Structured Illumination Technique for the Inspection of High-Reflective Surfaces: Application for the Detection of Structural Defects" doc
... of a widely used real-time industrial application The core component of the algorithm is the selection and the extraction of the features best describing the image contents The first step of the ... illuminations must be used for covering the complete circumference of a metallic cylinder The number NC of needed cameras depends not only on the diameter of the object DO , the width of the ray aperture’s ... structured light for the purpose of specular cylindrical surfaces inspection The deflection of the light rays is used without measuring the deformation of the projected rays in the recording sensor,...
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Báo cáo hóa học: "Single step process for the synthesis of carbon nanotubes and metal/alloy-filled multiwalled carbon nanotubes" docx
... spectra of the alloy-filled MWNTs (Fig 2a) showed the presence of Zr, Cr, Fe and Ni; the constituents of the alloy, with a composition comparable to that of the initial alloy used for the 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 of the 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...
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Lignocell ulosic Precursors used in the Synthesis of Activated Ca rbon - Characterization Techniques and Appl ications in the Wastewa ter Treatment potx
... physical procedures An analysis of the experimental conditions used in the synthesis of ACs has been made attending to the carbon specific surface area Also, the advantages and disadvantages of each ... Precursors Used in the Synthesis of 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 for synthesis of activated carbon The use of ZnCl2 has declined because of the environmental pollution problems with...
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Báo cáo lâm nghiệp: " Ranking the importance of quality variables for the price of high quality beech timber (Fagus sylvatica L.) ppt
... controlled by the properties of the goods Solving the problem was therefore divided into two steps; the analysis of the buyers’ preference and the incorporation of the qualities of the goods (i.e ... the price should increase with the growing preference for specific goods The link to the qualities of the goods’ is eventually formed by the fact that the consumer preferences themselves are often ... prediction for the main or for the independent test data set (Tab V) When compared to the performance of the model without the buyers’ preference (one-stage approach) the results of the two-stage...
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báo cáo khoa học: "Predictive genetic testing for the identification of high-risk groups: a simulation study on the impact of predictive ability" pot
... when the frequency of the high- risk group is lower than, equal to or higher than the disease risk The frequency of the high- risk group is defined as the proportion of individuals with a number of ... at high risk The frequency of the 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 of the frequency of the high- risk...
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guide for the use of high-range water-reducing admixtures (superplasticizers) in concrete
... 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 of the structural member being constructed When the w/cm is below 0.35, HRWRAs are often added at the plant to assure control of the water, and then ... true for the 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...
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Tìm thêm: xác định các mục tiêu của chương trình xác định các nguyên tắc biên soạn khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo gắn với các giáo trình cụ thể xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25