ngô bảo châu amp đỉnh cao toán học
giáo trình hình học đại số của GS Ngô Bảo Châu
... vay mữủn tứ cĂc sĂch  cõ, chừ yáu tứ cừa Hartshorne v cừa Mumford Ngữới viát cụng khổng hã ngƯn ngÔi lữủc bợt i hon ton mởt số chựng minh quĂ rưc rối hoc ch trẳnh by chựng minh mởt trữỡng hủp ... trản 3.3 DY KHẻP V HM T KHẻP 37 mởt khổng gia tổpổ hay trản mởt lữủc ỗ iãu ny khổng cõ gẳ Ăng ngÔc nhiản vẳ khĂi niằm phÔm trũ Abel cụng ữủc ữa chừ yáu hẳnh thực hõa cĂc tẵnh chĐt chung...
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Báo cáo toán học: " Photoluminescence characteristics of Cd1-xMnxTe single crystals grown by the vertical Bridgman method" doc
... were vacuum-sealed in a carbon-coated quartz ampule under a pressure of × 10−6 Torr The reaction temperature was slowly raised from 600°C to 1,200°C The ampule was held at 1,200°C for h to homogenize ... Before PL measurements, CMT samples were cut into × × mm3, mechanically polished, and then etched in 2% bromine-methanol solution In order to measure the PL spectra, the samples were cooled down to ... to transitions across the band gap The intense PL emission at 300 K in CdTe reflects that the samples are high quality crystals The dominant emission peak observed for CdTe at 1.590 eV is attributed...
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Báo cáo toán học: " Structure-property relations of co-doped bismuth layer-structured Bi3.25La0.75(Ti1-xMox)3O12 ceramics" pptx
... The pressed samples were sintered at temperatures in a range of 1,000 to 1,150°C for h Optimum sintering temperature for producing highest-density ceramics was determined, and the samples were ... or other metal oxide additives is often necessary for ferroelectric property improvement For example, ions of La [5], V [6], Nd [7], and Pr [8] have been used to substitute the Bi ion in a BIT ... optimum sintering condition for achieving maximum density was 1,100°C and h dwell time These ceramic samples were selected for phase characterization whose results are shown in Figure All XRD patterns...
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Báo cáo toán học: " Measurement of beta amyloid peptides in specific cells using a photo thin-film transistor" pot
... utilized to detect biomolecules in a label-free way when electrokinetically preconcentrated to amplify the low concentrations, which is also difficult for accurate quantification -2- As a result ... a cell line We prepared a circular PDMS well with a diameter of 200 µm to guide the biological sample solution It was aligned on the p-FET surface, so the sensing area was placed in the middle ... 2c) The synthetic ratio of Aβ to FITC is defined to be 1:4 by the manufacturer (USBiological, Swampscott, MA, USA) After the fluorescence treatment with FITC, the nuclei of the HeLa cells were...
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Báo cáo toán học: " Metal work-function-dependent barrier height of Ni contacts with metal-embedded nanoparticles to 4H-SiC" doc
... compared to the NP-1 sample and NP-2 sample was rather small (below 6%) Figure shows the current density-voltage [J-V] characteristics of the as-deposited Ni contacts and samples with different ... samples were cleaned in H2SO4:H2O2 = 4:1, the native oxide was removed by a BOE dip A thin layer (10 nm) of metal film (Au and Ag, respectively) was then deposited on the front side of the samples ... Figure shows the fabricated samples with metal NPs: Ni/SiC contacts embedded with the Au-NPs (NP-1) and Ni/SiC contacts embedded with the Ag-NPs (NP-2) Note that control samples (Ref) were also prepared...
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Báo cáo toán học: " Dilemmas in the reliable estimation of the in-vitro cell viability in magnetic nanoparticle engineering: which tests and what protocols?" doc
... cellular protein Protein content was determined by the addition of a 100-µL sample to a 3-mL Bradford reagent The samples were mixed well at room temperature for min, and absorbance was measured ... at 25°C, and an average value was determined Prior to zeta potential analysis, standard control samples were run on the instrument Culture of cell lines Two cell lines, SH-SY5Y (human neuroblastoma; ... hydrochloric acid (100 µL) was added to the cells, and the tubes were incubated at 90°C for 0.5 h The samples were cooled to room temperature and centrifuged at 1,500 rpm for 10 The supernatant was diluted...
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Báo cáo toán học: " Optical sensing nanostructures for porous silicon rugate filters" doc
... [5-9] For example, by placing the electrode in a different way, a porous silicon band filter gradient that displayed rainbow colors on its surface was prepared [6], and by employing an amplitude-modulated ... photonic crystals for amplified optical detection of protease activity Adv Mater 2006, 18:1393-1396 10 Dorvee JR, Derfus AM, Bhatia SN, Sailor MJ: Manipulation of liquid droplets using amphiphilic, magnetic ... the structure The periods for these sine waves were between 2.4 to 6.9 s After formation, the samples were rinsed with pure ethanol and were dried with nitrogen gas C-PSRF preparation Three sine...
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Báo cáo toán học: " TiN nanoparticles: small size-selected fabrication and their quantum size effect" doc
... carried out to study the particle size effects on their physical-chemical properties A typical example is that the melting temperature of nanoparticles strongly depends on the size and shape and ... Instruments Inc., Plainview, NY, USA) multimode scanning probe microscope in hard tapping mode The sample surface was scanned at Hz and within µm2 The Image Processing and Data Analysis software (Version ... used for image analysis For TEM characterizations, TiN nanoparticles were grown on copper grids Samples were characterized by HRTEM using a 300-kV FEI Titan 80-300 STEM/TEM microscope (FEI Co.,...
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Báo cáo toán học: " Synthesis of highly transparent ultrananocrystalline diamond films from a lowpressure, low-temperature focused microwave plasma jet" ppt
... concurrent absence or weakening of the peaks located at 1, 190 and 1, 140 cm-1 (t-PA) for the sample grown at 100 Torr suggested that the content of C-H bonds (t-PA) in the films would be decreased...
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Báo cáo toán học: " Structure of reverse microemulsion-templated metal hexacyanoferrate nanoparticles" ppt
... is present at the amphiphilic interface (as it becomes dissolved in oil, whereas CTAB and CTAFeII should not be soluble in hexane to any significant extent) Thereby, the total amphiphilic interface ... and 1,700 cm1 because of the water present In order to quantify this amount of water in CTAFeII samples, Karl Fisher titrations were carried out, obtaining a 2.8% in weight Phase behavior The pseudo-ternary ... solubility has no strong dependence on the type of alcohol and that similar conditions prevail at the amphiphilic interface of the microemulsion aggregates for butanol and pentanol On the other side,...
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Báo cáo toán học: " Highly selective fluorescent chemosensor for Zn2+ derived from inorganic-organic hybrid magnetic core/shell Fe3O4@SiO2 nanoparticles" pot
... spectrofluorophotometer (Chorley, UK) equipped with quartz cuvettes of 1.0-cm path length with a xenon lamp as the excitation source An excitation and emission slit of 10.0 nm was used for the measurements ... in the solution state All spectrophotometric titrations were performed with a suspension of the sample dispersed in ethanol Synthesis of Fe3O4@SiO2 NPs Fe3O4@SiO2 NPs were synthesized according ... magnetization curves of the Fe3O4@SiO2 and DTH-Fe3O4@SiO2 which were investigated with a vibrating sample magnetometer tuned from −15,000 to 15,000 Oe at 300 K The result was consistent with the conclusion...
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Báo cáo toán học: " The structural and optical properties of GaSb/InGaAs type- quantum dots grown on InP (100) substrate" ppt
... sample on InP substrate Dashed-dot and dashed lines show the PL spectra of type-II and type-I, respectively Figure PL spectra and PL peak energies (a) The low-temperature PL spectra of the sample ... USA) The photoluminescence [PL] measurements were performed for the optical properties of the sample at 20 K using the source of a 532-nm line, and the excitation power is changed from mW to ... the GaSb QD would be the only proper origin of the high-energy peak In the growth process of the sample, the InGaAs cap layer was doped with Si Because the dope concentration was relatively high,...
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Báo cáo toán học: " Antitumor activity of sorafenib-incorporated nanoparticles of dextran/poly(DL-lactide-co-glycolide) block copolymer" pdf
... Instruments, Malvern, UK) A sample solution prepared by dialysis was used to determine the particle size Drug release study in vitro The release experiment was carried out in vitro A sample solution prepared ... of 100 rpm at a temperature of 37°C At specific times, the PBST was sampled for analysis of drug concentration After each sampling, the entire volume of PBST was replaced with fresh PBST to prevent ... system (PerkinElmer, Waltham, MA, USA) was equipped with a Solvent Manager 5-CH degasser, an autosampler, a quaternary LC pump, a column oven, and a UVvisible detector Chromatography was performed...
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Báo cáo toán học: " High loading of nanotructured ceramics in polymer composite thick films by aerosol deposition" docx
... they have no competing interests Authors' contributions HJK carried out the aerosol-deposited sample fabrication, measurements, and interpretation of the results SMN initiated the idea of working...
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Báo cáo toán học: " Facile synthesis of uniform large-sized InP nanocrystal quantum dots using tris(tert-butyldimethylsilyl)phosphine" pptx
... quantum yield of approximately 28% The diameters of at least 100 nanocrystals were counted for each sample from TEM images, and the average size and standard deviation were determined Sizes of synthesized...
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Báo cáo toán học: " Strong coupling among semiconductor quantum dots induced by a metal nanoparticle" ppt
... )T 2 + (ωs + η − ωex ) T (13) is the first-order (linear) susceptibility In what follows, as an example, we consider a CdSe SQD with radius r = 3.75 nm [4] and an Au MNP with radius R = 7.5 nm We ... superconducting qubits via a cavity bus Nature 2007, 449:443 20 Bergman DJ, Stockman MI: Surface plasmon amplification by stimulated emission of radiation: quantum generation of coherent surface plasmons...
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Báo cáo toán học: " Enhancement of the photoelectric performance of dye-sensitized solar cells by using Ag-doped TiO2 nanofiber in TiO2 nanoparticle film as an electrode" pot
... Figure shows that the Ru peak energy around 2.2 keV was higher in the wt.% ATN than those of other samples and the weight of Ru is 0.42 at.% So, the ATN on the TiO2 film gave a higher adsorption of ... based on a TiO2 film with different amounts of TN The solar cell irradiated with a 1,000-W xenon lamp with a light intensity of 100 m/cm2 as a light source The short-circuit current density [Jsc] ... films with wt.% ATN The photocurrent density and η of DSSCs with wt.% ATN were the best among the samples The electron lifetimes within DSSCs are determined primarily by the recombination of electrons...
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