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a step by step guide to encoding for the web

the videomaker guide to digital video and dvd production

the videomaker guide to digital video and dvd production

Đại cương

... as fast as in its analog relatives, and the signal is digital The Digital8 format is backward-compatible with the analog mm format That’s a big plus if you have a closetful of legacy mm gear and ... quality and Dolby Digital 16bit audio A Quick Guide to Video Formats So Many Standards A healthy and competitive technological market is to blame for the diversity of video formats we have today ... Digital8, DVCAM and DVCPro) utilize the same basic data format and data rate (25 Mbps) to encode and decode 30 fps NTSC video data q Sampling DV encoding hardware samples each frame of video for...
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Information Management Resource Kit Module on Management of Electronic DocumentsUNIT 5. DATABASE MANAGEMENT SYSTEMS LESSON 6. TEXTUAL DATABASES AND CDS/ISIS BASICSNOTE Please note that this PDF version does not have the interactive features offered th doc

Information Management Resource Kit Module on Management of Electronic DocumentsUNIT 5. DATABASE MANAGEMENT SYSTEMS LESSON 6. TEXTUAL DATABASES AND CDS/ISIS BASICSNOTE Please note that this PDF version does not have the interactive features offered th doc

Cơ sở dữ liệu

... Information Systems), is a textual database management system designed to build and manage textual databases Database management systems - Textual databases and cds/isis basics – page What does CDS/ISIS ... not all the adaptations can be made, and not all involve the same amount of work To better understand these capabilities and the work required, let’s design a CDS/ISIS database Database management ... can define: - the structure of fields, - how to display the data, - how to search the data, and - how to input data in the database • CDS/ISIS is particularly effective for retrieval in data...
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Báo cáo hóa học:

Báo cáo hóa học: " Synthesis of Tapered CdS Nanobelts and CdSe Nanowires with Good Optical Property by Hydrogen-Assisted Thermal Evaporation" docx

Hóa học - Dầu khí

... at a rate of 60 sccm (standard cubic centimeter per minute) The furnace was heated to 800 °C with a heating rate of 100 °C min-1 and maintained at this temperature for 40 Then, the furnace was ... of a quartz tube, which was inserted into a horizontal tube furnace The silicon wafer coated with *2 nm Au film was perpendicularly placed on the other ceramic boat located downstream, 10 cm away ... [23–25] As a result, the nanobelt’s width increases gradually along the axial direction starting from the contact region between liquid Au nanoparticle and CdS, i.e., the tapered CdS nanobelts form...
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Báo cáo hóa học:

Báo cáo hóa học: " Current–Voltage Characteristics in Individual Polypyrrole Nanotube, Poly(3,4-ethylenedioxythiophene) Nanowire, Polyaniline Nanotube, and CdS Nanorope" ppt

Hóa học - Dầu khí

... PEDOT nanowire The more linear I–V characteristics than the foregoing two cases yield larger values in the fitting parameters h and smaller values in the voltage scale parameter V0 as shown in Table ... conductance The parameter h = G0/Gh (h \ 1) yields a decrease of G below the exponential increase at higher voltages V (Gh is the saturated conductance at a high-field value) V0 is a voltage scale factor, ... barriers is comparable to the barrier energy, then the conductance will saturate at a value Gh and the I–V curves will become linear Further Discussion Here, we should note that the I–V characteristics,...
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Báo cáo hóa học:

Báo cáo hóa học: " The Role of Intrinsic and Surface States on the Emission Properties of Colloidal CdSe and CdSe/ZnS Quantum Dots Giovanni Morello Æ Marco Anni Æ Pantaleo Davide Cozzoli " potx

Báo cáo khoa học

... like to thank Paolo Cazzato for valuable technical assistance This work was supported by the European projects SA-NANO (contract n 013698) and by the Italian Ministry of research (contract n ... of these results we can associate the transitions |1i and |2i to carrier recombination from ± 1U and ± 1L states and the transition |3i to a surface states emission By analysing the temperature ... all the intensities fall abruptly due to activation of nonradiative processes involving all the states, such as thermal escape induced by optical phonons absorption To explain the behaviour up to...
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Tài liệu Burning CDs and DVDs doc

Tài liệu Burning CDs and DVDs doc

Kỹ thuật lập trình

... require the Mac to duplicate all the files you plan to burn Start by inserting a blank disc After a moment, the Mac displays a dialog box asking, in effect, what you want to with this blank disc ... can drag the icons into an arrangement that you like; you can change the background color of the window; and so on One nice feature of the Mac (which is not available on The Other OS) is that ... the Burn button next to the disc's name in the Sidebar Drag the disc's icon toward the Trash icon in the Dock As soon as you begin to drag, the Trash icon turns into that yellow fallout-shelter...
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Tài liệu an analySiS of euro area Sovereign CDS anD their relation With government bonds docx

Tài liệu an analySiS of euro area Sovereign CDS anD their relation With government bonds docx

Ngân hàng - Tín dụng

... expect for the respective estimates of the parameters The effects of the factors are evaluated by means of a standard panel regression approach using the change in the CDS spreads or bond spreads as ... Paper Series No 1271 December 2010 2.5 Factor analysis of the sample We apply factor analysis to evaluate the extent of common variation across CDS, bond spreads and the basis Table 4a shows the ... leverage defined as the ratio of debt to its assets is a major risk factor This risk factor is also acknowledged in a fiscal policy perspective as the EU’s Stability and Growth Pact aims to cap a...
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Báo cáo

Báo cáo " Sol-gel synthesis and particle size characterization of CdSe Quantum dots " ppt

Báo cáo khoa học

... formula, we can calculate the mean sizes of the CdSe QDs from the peak width at half-maximum Particle sizes obtained from the width of the (111) diffraction are depicted in the table Table Particle ... interval is estimated using the effective mass approximation 15 giving diameters ranging from 2.2 nm to 2.6 nm These values are comparable to those obtained by 10 TEM and by the wavelength of the ...  a   a  * y (1) where E g (a) is the effective band gap of QDs with radius of a, the band gap E g, Bohr exciton radius aB and Bohr exciton energy R * are the specific parameters of bulk material...
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Credit-risk valuation in the sovereign CDS and bonds markets: Evidence from the euro area crisis ppt

Credit-risk valuation in the sovereign CDS and bonds markets: Evidence from the euro area crisis ppt

Ngân hàng - Tín dụng

... for Germany and the highest one was 23 bp points for Greece For the same period, the lowest average bond spread was bp for both France and The Netherlands, and the highest average was 25 bp for ... in the sample, the basis behaves like a non-stationary variable For this reason, instead of analysing the determinants of the basis we study the determinants of the relative basis, defined as the ... to the main CDS dealers such that counterparty risk and the VIX are now orthogonal variables e V  olume of Debt Purchased by the European Central Bank We use as an additional explanatory variable...
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Authoring and Generating Health-Education Documents That Are Tailored to the Needs of the Individual Patient doc

Authoring and Generating Health-Education Documents That Are Tailored to the Needs of the Individual Patient doc

Sức khỏe giới tính

... generate an appropriate surface form in English A formatter then lays out the text attractively and adds headings and illustrations for final printing Authoring and Generating Tailored Health-Education ... to the particular patient Representing a Tailorable Document 3.1 Finding an Appropriate Level of Abstraction As explained above, a master document is a specification of all the information that ... determined by both the patient’s medical condition and any other personal and cultural characteristics that might either be included in their medical record or available from the clinician Patient data...
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energy relaxation in cdse nanocrystals the effects of morphology and film preparation

energy relaxation in cdse nanocrystals the effects of morphology and film preparation

Vật lý

... TA traces in Figs 2 (a) and 3 (a) , corresponds to the intraband exciton relaxation to the respective probe energies Therefore, the approximate time for an exciton to relax to the band edge is the ... of the B1 TA signal [1] For the QD and QR sample, the intraband relaxation times were approximately 700 fs and 1100 fs for the QD and QR respectively The increase in intraband relaxation for the ... to the average of the length and the diameter from the TEM data (~7 nm) The underestimation of crystal size by the Debye–Scherrer formula is likely due to additional broadening of the XRD peak...
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ultrafast spectroscopy of cdse nanocrystals morphological and environmental effects on nonradiative and nonadiabatic relaxation

ultrafast spectroscopy of cdse nanocrystals morphological and environmental effects on nonradiative and nonadiabatic relaxation

Vật lý

... used to stabilize the QR samples, the intraband relaxations in different samples are not a ected Aspects of Nonadiabatic Relaxation In addition to the charge carrier aspects of the TA measurements, ... Optical Characterization LA data for colloidal and thinfilm samples are shown in Figure 3A and B for the QDs and QRs, respectively In an attempt to directly compare intraband relaxation rates ... signal beams, with the former going to one side of a balanced photodetector and the latter going through the sample and then into the other side of the balanced photodetector The pump beam is sent...
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ultrafast spectroscopy of cdse nanocrystals morphological and environmental effects on nonradiative and nonadiabatic relaxation

ultrafast spectroscopy of cdse nanocrystals morphological and environmental effects on nonradiative and nonadiabatic relaxation

Vật lý

... used to stabilize the QR samples, the intraband relaxations in different samples are not a ected Aspects of Nonadiabatic Relaxation In addition to the charge carrier aspects of the TA measurements, ... Optical Characterization LA data for colloidal and thinfilm samples are shown in Figure 3A and B for the QDs and QRs, respectively In an attempt to directly compare intraband relaxation rates ... signal beams, with the former going to one side of a balanced photodetector and the latter going through the sample and then into the other side of the balanced photodetector The pump beam is sent...
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synthesis and characterization of cdse-zns core-shell quantum dot

synthesis and characterization of cdse-zns core-shell quantum dot

Vật lý

... connected to a variac (variable autotransformer) Temperatures were measured by a thermocouple inserted into the reaction vessel Stirring was achieved with a magnetic stir bar spinning at approximately ... round bottom flask with stirring, heated by a heating mantle controlled by a variac The temperature of the cadmium oleate solution was then lowered to approximately 225 °C and allowed to stabilize ... systems aim to significantly red shift the fluorescence, often into wavelengths that are otherwise unattainable with the same materials This is done by coating the core with a shell that has a staggered...
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Báo cáo hóa học:

Báo cáo hóa học: " Synthesis and highly visible-induced photocatalytic activity of CNT-CdSe composite for methylene blue solution" pdf

Hóa học - Dầu khí

... the photocatalytic reaction was used to evaluate the activity of the composite The characteristic absorption peak of MB solution at 665 nm was chosen as the monitored parameter to detect the concentration ... in the dark for at least h, allowing the adsorption/desorption equilibrium to be reached Then, the solution was irradiated with visible lamp The first sample was taken out at the end of the dark ... Japan) was used to determine the state and particle size of prepared composite TEM at an acceleration voltage of 200 kV was used to investigate the number and the stacking state of graphene layers...
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Báo cáo hóa học:

Báo cáo hóa học: " One-Pot Synthesis of Biocompatible CdSe/CdS Quantum Dots and Their Applications as Fluorescent Biological Labels" doc

Hóa học - Dầu khí

... labeling and washing, 20 μL of a solution of MTT (5 mg/mL in PBS) was added to each well, and assay was performed at specific time intervals The absorbance of the formazen product was then measured at ... spectra of the as-prepared PAA-capped CdSe QDs dispersed in water; b TEM and size distribution histogram; c HRTEM; and d SAED images of the as-synthesized PAA-capped CdSe nanocrystals (the absorption ... human cells to demonstrate the promising applications as fluorescent biological labels MTT assays were performed to evaluate the cytotoxicity corresponding to the biocompatibility of PAA-capped...
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Báo cáo hóa học:

Báo cáo hóa học: " Field Emission Properties and Fabrication of CdS Nanotube Arrays" pot

Hóa học - Dầu khí

... CdS nanotube arrays are measured using a two-parallel-plate configuration in a homemade vacuum chamber at a base pressure of *1.0 10-6 Pa at room temperature The sample is attached to one of stainlesssteel ... n, and c are alterable parameters The r is the average radius of nanotube, l is the length of nanotube, and t is the thickness of wall The b is determined by two factors, aspect ratio l/r and the ... respectively They are consistent with the experiment values In our case, l/r of those CdS nanotube arrays are 123 A large area of CdS nanotube arrays is fabricated by a facile way of layer -by- layer deposition...
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Báo cáo hóa học:

Báo cáo hóa học: " CdSe Ring- and Tribulus-Shaped Nanocrystals: Controlled Synthesis, Growth Mechanism, and Photoluminescence Properties" potx

Báo cáo khoa học

... interfaces [26–29] The aggregation of nanoparticles contains the linear alignment which can be achieved by sharing a common crystallographic orientation among the primary particles and the nonlinear ... arrangement which can be attained with the lateral lattice fusion of the primary particles [30] Generally, the linear alignment can lead to the formation of one-dimensional nanostructures (nanorods ... six equal chances to attach to their neighboring crystallites, and a statistical assembly of the tiny hexagons may lead to the formation of a curvature In order to ensure a smooth curvature development,...
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Báo cáo hóa học:

Báo cáo hóa học: " Synthesis, Optical Properties, and Photocatalytic Activity of One-Dimensional CdS@ZnS Core-Shell Nanocomposites" pdf

Hóa học - Dầu khí

... ethylenediamine up to about 70% of the total volume The autoclave was maintained at 180 °C for 24 h and then allowed to cool to room temperature A yellowish precipitate was collected and washed with absolute ... photocatalytic activity than others The enhanced photocatalytic activity may be due to the surface charge modification and surface electronic states passivation of CdS cores by the ZnS shells A ... sequence The resulting mixture was loaded into a 55 mL-Telfon-lined 559 autoclave and maintained at 180 °C for 12 h After the reaction was completed, the autoclave was cooled to room temperature naturally,...
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Báo cáo hóa học:

Báo cáo hóa học: " Excitonic Transitions and Off-resonant Optical Limiting in CdS Quantum Dots Stabilized in a Synthetic Glue Matrix" pptx

Báo cáo khoa học

... peaks corresponding to excitonic transitions (dashed lines) material parameters such as effective mass and bandgap as numerical inputs to the theory The main advantage of this method of analysis, ... transform infrared (FTIR) spectrophotometer to obtain information about the surface of the nanocrystal Thermogravimetric analysis are performed using a Perkin Elmer Pyris thermogravimetric analyzer ... and mh and nanocrystal radius R The theoretical ratios are then compared with ratios obtained experimentally (Table 3) The theoretical ratios and experimental ratios agree well if we assign the...
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