chemical terrorism classification synthesis and properties
Zinc Oxide Nanostructures: Synthesis and Properties
Ngày tải lên :
28/04/2014, 15:06
... physical properties of ZnO nanostructures, including mechanical, piezoelectric, electrical, optical, magnetic and chemical sensing properties Table Physical properties of wurtzite ZnO Properties ... Zhao, C Andreazza, P Andreazza, J Ma, Y Liu, and D Shen, Chem Phys Lett 399, 522 (2004) 138 W Lee, M.-C Jeong, and J.-M Myoung, Nanotechnology 15, 1441 (2004) 139 W.I Park, Y.H Jun, S.W Jung, and ... also employ less rigorous synthesis conditions and provide great potential for device applications Physical Properties of ZnO Nanostructures Table lists the basic physical properties of bulk ZnO.93...
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Báo cáo hóa học: " Glassy State Lead Tellurite Nanobelts: Synthesis and Properties" docx
Ngày tải lên :
21/06/2014, 17:20
... large number of –O–Pb–O– linkages [22] with [PbO6] octahedra and [OPb4] and [PbO4] tetrahedra form and enter [TeO4] and [TeO3] network, and forms glass phase when the system cools down, because ... distribution, and reproduction in any medium, provided the original author(s) and source are credited 123 1350 References R.A.F El-Mallaway, Tellurite Glasses Handbook: Properties and Data (CRC, ... has crystallized And deformation and distortion begin to occur in the belts, as is shown by the arrows in Fig 3d At 500°C, more diffractive peaks emerge, and the belts have shrunk and formed the...
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DESIGN, SYNTHESIS AND PROPERTIES OF METAL COMPLEXES AND COORDINATION POLYMERS FOR 2+2 PHOTO CYCLOADDITION REACTIONS
Ngày tải lên :
09/09/2015, 11:15
... current and previous friends in Singapore, Anand, Durga, Deva, Gopal, Dr Vasu, Venu and many more for their help and association I want to pay my deep regards and gratitude to all my teachers and ... C-Hπ and C-HX in solid state and their properties in solid state and their role in the design and synthesis of organic solids during his studies in the late 80’s and early 90’s showed the promising ... CPs and its photo reactivity which are synthesized from using Cd2+, 1,4-benzenedicarboxylate as linker and 4spy and its derivatives as photoreactive ligand Among these, the CP with 4spy ligand...
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Báo cáo hóa học: " Wet chemical synthesis and magnetic properties of single crystal Co nanochains with surface amorphous passivation Co layers" pdf
Ngày tải lên :
21/06/2014, 04:20
... of 355.8 and 93.6 Oe, respectively, for NCs and PSC, saturation magnetizations (Ms) of 125.7 and 162.5 emu/g, respectively, for NCs and PSC, and remnant magnetization (M r ) up to 46.6, and 4.5 ... of published SY and YQ: partly carried out the TEM and HRTEM experiments, as well as drafted the manuscript XL, LS, and HL: conceived of the study, and participated in its design and coordination ... nanochains by chemical vapor deposition J Phys Condens Matter 2008, 20:075217 doi:10.1186/1556-276X-6-285 Cite this article as: Zhou et al.: Wet chemical synthesis and magnetic properties of...
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Báo cáo khoa học: Methylene analogues of adenosine 5¢-tetraphosphate Their chemical synthesis and recognition by human and plant mononucleoside tetraphosphatases and dinucleoside tetraphosphatases pot
Ngày tải lên :
16/03/2014, 14:20
... in Fig Other chemicals Unlabelled mono- and dinucleotides were from Sigma (St Louis, MO), and [3H]Ap4A (740 TBqÆmol)1) was purchased from Moravek, Biochemicals (Brea, CA) ppppRibose and ppCH2ppRibose ... 5¢-tetraphosphate synthesis from ATP and ADP Biochim Biophys Acta 869, 107–111 Randerath K, Janeway CM, Stephenson ML & Zamecnik PC (1966) Isolation and characterization of dinucleoside tetra- and tri- ... identify the nature and location of the oxygen and methylene groups bridging the four phosphorus atoms (see Supplementary material) Results and Discussion Comments on the synthesis of p4A analogues...
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synthesis and optical properties of colloidal tungsten oxide nanorods
Ngày tải lên :
20/03/2014, 13:08
... localized states in the band gap due to impurities.22b In light of these assignments, we suggest that the UV emission of nanorod samples in this work might correspond to the band-toband transition The ... and the intensity of this peak increases relative to that of UV emission as the length of nanorods increases A similar PL pattern with two emission maxima, yet at much lower energies of 2.8 and ... 20 nm (medium), and 130 ( 30 nm (long) The strongest PL emission peaks appear at 3.60 eV (344 nm), 3.56 eV (348 nm), 3.55 eV (349 nm) for short (25 ( nm), medium (75 ( 20 nm), and long (130 (...
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Báo cáo khoa học: Total chemical synthesis and NMR characterization of the glycopeptide tx5a, a heavily post-translationally modified conotoxin, reveals that the glycan structure is a-D-Gal-(1fi3)-a-D-GalNAc pot
Ngày tải lên :
23/03/2014, 13:20
... trifluoroacetic acid and immediately injected onto RP-HPLC and fractions collected were collected and analyzed with ESI and MALDI-MS Chemical reduction The native and synthetic tx5a (hydrophilic and hydrophobic) ... this moiety and help us to understand this fairly unique chemical shift frequency (Fig 5) In addition, there are several weak NOEs between the N-acetyl CH3 and GalNAc H3, GalNAc H4 and Gal H3, ... between GNH3 of GalNAc and GH1 of Gal, which is labeled in bold The amino acids Gly6, Thr10 and Pro13 are represented by 6G, 10T and 13P Ó FEBS 2004 Glycopeptide tx5a synthesis and NMR analysis (Eur...
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Báo cáo " Synthesis and thermoelectric properties of La(Fe1-xSix)13 compounds (x = 0.12, 0.14 and 0.15) " pptx
Ngày tải lên :
28/03/2014, 13:20
... between the ferromagnetic and paramagnetic states is 27 % and 18% for x = 0.12 and 0.14, respectively Finally, the thermal conductivity (κ) of La(Fe1-xSix)13 (x = 0.12, 0.14 and 0.15) compounds is ... amounts of high purity of La with 99.9%, Fe with 99.99% and Si with 99.999% in purified Ar atmosphere The ingots were sealed into evacuated tubes and the heat treatment for homogenization was carried ... thermopower, electrical resistivity and thermal conductivity were measured by using a Quantum Design PPMS in the temperature range from K to 300 K Results and discussion 10000 The La(Fe1-xSix)13...
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batch chemical process integration - analysis, synthesis and optimization dec 2009
Ngày tải lên :
02/04/2014, 16:23
... optimization and heat exchanger network (HEN) synthesis, Mass Exchanger Network (MEN) analysis, synthesis and optimization (El-Halwagi and Manousiouthakis, 1989; 1990a, b) and WaterPinch (Wang and Smith, ... passion Mr Thanda Sibisi, my former science and mathematics teacher, who instilled in me the love and understanding for these two wonderful subjects and further advised me to pursue chemical engineering ... Batch Chemical Process Integration Thokozani Majozi Batch Chemical Process Integration Analysis, Synthesis and Optimization 13 Prof Dr Thokozani Majozi Department of Chemical Engineering...
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controlled synthesis and gas sensing properties of hollow sea urchin like
Ngày tải lên :
05/05/2014, 15:26
... is the first report of the selective synthesis of ␣-Fe2 O3 superstructures and nanocubes The gassensing properties of the ␣-Fe2 O3 superstructures, nanocubes and nanoparticle aggregations with ... decomposition of ␣-FeOOH and release of H2 O Fig 5a and b show SEM image and XRD pattern of the products obtained via a hydrothermal reaction of FeCl3 with H2 O at 140 ◦ C for 12 h The SEM and XRD results ... temperature, and reaches to maximum at 350 ◦ C It is possibly related to the chemical reaction kinetics between gas molecules and oxygen ions adsorbed on the surface of the ␣-Fe2 O3 superstructures The chemical...
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files lectures nanotechnology synthesis structures and properties
Ngày tải lên :
28/05/2014, 15:03
... 0,1,2 and 3; the materials of interest include metals, amorphous and crystalline alloys, semiconductors, oxides, nitride and carbide ceramics in the form of clusters, thin films, multilayers, and ... lithographically fabricated structures and chemically synthesized large molecules 2.1 History of fullerenes Fullerenes are large, closed-cage, carbon clusters and have several special properties that were not ... compounds that surely will be used in future technologies and applications Before the first synthesis and detection of the smaller fullerenes C60 and C70, it was generally accepted that these large...
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synthesis and optical properties of au-ag alloy nanoclusters with controlled composition, p26
Ngày tải lên :
04/06/2014, 15:20
... has been paid to the synthesis and characterization of bimetallic nanoparticles due to their unique catalytic, electronic, optical, structural and thermal properties [1-5] and subsequent technological ... “Extracellular Biosynthesis of Bimetallic Au-Ag Alloy Nanoparticles”, Small, Vol 1, pp 517-520, 2005 [25 P Raveendran, J Fu, and S L Wallen, “A simple and green method for the synthesis of Au, Ag, and Au–Ag ... Astle, and W H Beyer, Eds “CRC Handbook of Chemistry and Physics” 65th edn CRC Press, Inc Boca Raton, FL, 1984 [45] M A El-Sayed, “Some Interesting Properties of Metals Confined in Time and Nanometer...
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Nanocomposites metal-polymer, characteristics, properties, synthesis and applications
Ngày tải lên :
10/06/2014, 22:21
... Biological Approach to Nanoparticle synthesis, Nano lett (2001)515 [25] A.Ahmad, P Mukherjee, S.Senapati, D Mandal, M.IKhan, R.Kumar and M.Sastry, Extracellular biosynthesis of silver nanoparticles ... Mukherjee, A.Ahmad, D.Mandal, S.Senapati, SR.Sainkar, M.I.Khan, R.Parishcha, P.V.Ajatkumar, M.Alam, R.Kuma and M.Sastry, Fungus – Mediated Synthetic of Silver Nanoparticles and Their Immobilization ... Guozhong Wu and Shimou Chen, Preparation ofoligochitosan stabilized silver nanoparticle by gamma irradiation, Radiation Physics and Chemistry 76 (2007) 1126 – 1131 [23] T.Tsuji, T Kakita and M Tsuzi,...
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Báo cáo toán học: " Synthesis and characterization of CuO nanowires by a simple wet chemical method" pdf
Ngày tải lên :
20/06/2014, 21:20
... formation of a pure phase CuO In order to understand the chemical and structural nature of the synthesized CuO and the effect of the chemicals used in the synthesis of CuO nanowires, FTIR analysis was ... gates and computation from assembled nanowire building blocks Science 2001, 294:1313-1317 Hu J, Odom TW, Lieber CM: Chemistry and physics in one dimension: synthesis and properties of nanowires and ... simple and inexpensive wet chemical method, the synthesis of copper oxide nanowires with diameters of 90 nm and lengths of several micrometers has been successfully carried out The concentration and...
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Báo cáo hóa học: " Synthesis and magnetic properties of Zr doped ZnO Nanoparticles" docx
Ngày tải lên :
20/06/2014, 22:20
... measurements and data analysis, and drafted the manuscript DG and DX made the conception and design of the manuscript ZZ2 carried out the XPS measurements and data analysis JLZ and ZZ1 participated ... nanowires: Optical properties and room-temperature ferromagnetism J Appl Phys 2010, 108:043516 doi:10.1186/1556-276X-6-587 Cite this article as: Zhang et al.: Synthesis and magnetic properties of ... measurements and data analysis GY and ZS participated in the data analysis and the interpretation of the results All authors have been involved in revising the manuscript, read and approved the...
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Báo cáo hóa học: " Fe3O4–Au and Fe2O3–Au Hybrid Nanorods: Layer-by-Layer Assembly Synthesis and Their Magnetic and Optical Properties" pptx
Ngày tải lên :
21/06/2014, 07:20
... structure and size Moreover, c-Fe2O3 also exhibit three peaks between 500 and 700 cm-1, which is different from Fe3O4 [40, 41] The IR analysis combined with TEM images and XRD pattern can confirm the synthesis ... pattern can confirm the synthesis of a-Fe2O3–Au and Fe3O4–Au hybrid nanorods Fe3O4–Au and a-Fe2O3–Au hybrid nanorods show the combined magnetic and optical properties, which originate 123 1758 Nanoscale ... resonance band at around 520 nm [44] The exact absorption varies with nanoparticles morphology and particle surface coating Herein, compared to pure Fe3O4 and aFe2O3 nanorods, both Fe3O4–Au and a-Fe2O3–Au...
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Báo cáo hóa học: " Synthesis and Photoluminescence Properties of Porous Silicon Nanowire Arrays" pdf
Ngày tải lên :
21/06/2014, 08:20
... Ag-assisted chemical etching of n-Si (100) wafers with the resistivity of about 0.02 X cm The samples were firstly washed with acetone and deionized water and then immersed into H2SO4 and H2O2 solution ... 120, and 180 min, respectively Fig a The decomposition of the PL spectrum of the SiNWs treated with HF and the PL intensity varieties of the elementary bands with b H2O2 concentrations and c ... extract electrons from Si nearby and are deoxidized into Ag again The Si atoms around are oxidized and dissolved, leading to the etching of the silicon surface and the formation of the vertical...
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Báo cáo hóa học: " Synthesis and Magnetic Properties of Maghemite (c-Fe2O3) Short-Nanotubes" ppt
Ngày tải lên :
21/06/2014, 17:20
... short-tubular structures The roomtemperature and low-temperature magnetic properties of these SNTs were investigated The study of pure c-Fe2O3 SNTs and their magnetic properties is a key issue, not only ... c), and HRTEM (d, e, the scale bar is 10 nm) images of as-prepared c-Fe2O3 SNTs incorporated sulfate ions in the preparing process, corresponding to the one band of the v1 mode and two bands ... and desorption curves of starting materials and as-prepared c-Fe2O3 SNTs at 77 K Fig Magnetic hysteresis loops at T = 300 K and the enlarged partial hysteresis curves for starting materials and...
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