Repositorio IPICyT: Envíos recientes
Mostrando ítems 1441-1460 de 2301
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Controlled growth of one-dimensional clusters of molybdenum atoms using double-walled carbon nanotube templating
(2009)"We report the controlled growth of one-dimensional clusters of molybdenum atoms inside the inner cores of double-walled carbon nanotubes. A combined characterization including high resolution transmission electron microscopy, ... -
Strong and stable photoluminescence from the semiconducting inner tubes within double walled carbon nanotubes
(2009-01)"We examined the optical features of single wall carbon nanotubes (SWNTs) and the inner tubes within double walled carbon nanotubes (DWNTs) having the same (n,m) chirality. The brighter and more stable photoluminescence ... -
Diameter-selective separation of double-walled carbon nanotubes
(2008-12)"Here, we report a simple and effective way of separating double-walled carbon nanotubes as a function of their diameter using individually dispersed nanotube solutions with the aid of long and random single-stranded DNA. ... -
Nonlinear optical absorption and reflection of single wall carbon nanotube thin films by ZZ-scan technique
(2008-02)"Both the nonlinear optical transmission and reflection characteristics of HiPco-based single wall carbon nanotube (SWNT) thin films are studied by using the ZZ-scan method with femtosecond laser pulses at a wavelength of ... -
CdSe quantum dot-decorated double walled carbon nanotubes: the effect of chemical moieties
(2008-08)"We report that fluorine atoms on the outer tubes of double walled carbon nanotubes (DWNTs) are more effective for nucleating and growing CdSe nanoparticles than oxygen-containing functional groups. The CdSe particles with ... -
Modelling adsorption isotherms of binary mixtures of carbon dioxide, methane and nitrogen
(2011)"A molecular-based approach for modelling mixtures adsorbed onto solid surfaces using the Statistical Associating Fluid Theory for Potentials of Variable Range (SAFT-VR) for three- and two-dimensional systems is presented ... -
An anticorrosive magnesium/carbon nanotube composite
(2008-02)"Here, we report a drastically improved anticorrosive characteristic of magnesium alloy composites with the introduction of multiwalled carbon nanotubes. Highly depressed corrosion of nanotube-filled magnesium composite ... -
Adiabatic magnetocaloric effect in Ni50Mn35In15 ribbons
(2016-11)"Heusler-type Ni-Mn-based metamagnetic shape memory alloys (MetaMSMAs) are promising candidates for magnetic refrigeration. To increase heat exchange rate and efficiency of cooling, the material should have a high ... -
Enhanced thermal conductivity of carbon fiber/phenolic resin composites by the introduction of carbon nanotubes
(2007-02)"The authors report a significant enhancement in the thermal conductivity of a conventional carbon fiber/phenolic resin composite system when adding highly crystalline multiwalled carbon nanotubes. They demonstrate that ... -
Enhanced refrigerant capacity in two-phase nanocrystalline/amorphous NdPrFe17 melt-spun ribbons
(2014-05)"he magnetocaloric properties of NdPrFe17 melt-spun ribbons composed of nanocrystallites surrounded by an intergranular amorphous phase have been studied. The nanocomposite shows two successive second-order magnetic phase ... -
Enhanced refrigerant capacity in Gd-Al-Co microwires with a biphase nanocrystalline/amorphous structure
(2016-02)"A class of biphase nanocrystalline/amorphous Gd(50+5x)Al(30-5x)Co20 (x = 0, 1, 2) microwires fabricated directly by melt-extraction is reported. High resolution transmission electron microscopy and Fourier function transform ... -
Elastocaloric effect in Ti-Ni shape-memory wires associated with the B2 ↔ B19' and B2 ↔ R structural transitions
(2016-02)"We have studied the elastocaloric properties of Ti-Ni shape-memory wires subjected to specific heat treatments to decouple the B2 <-> R transition from the B2 <-> B19' one. The entropy values at moderate stresses (similar ... -
Giant magnetocaloric effect in melt-spun Ni-Mn-Ga ribbons with magneto-multistructural transformation
(2014-01)"Magnetic refrigeration based on the magnetocaloric effect (MCE) may provide an energy-efficient and environment-friendly alternative to the conventional gas compression/expansion cooling technology. For potential applications, ... -
High-quality InN films on MgO (100) substrates: the key role of 30 degrees in-plane rotation
(2014-05)"High crystalline layers of InN were grown on MgO(100) substrates by gas source molecular beam epitaxy. Good quality films were obtained by means of an in-plane rotation process induced by the annealing of an InN buffer ... -
Influence of Fe doping and magnetic field on martensitic transition in Ni–Mn–Sn melt-spun ribbons
(Elsevier, 2016-04)"Mn-rich Ni-Mn-Sn metamagnetic shape memory alloys exhibiting magnetostructural transformation are of a great potential as the base materials for solid-state refrigeration. With the aim of fine tuning of the transformation ... -
Synergistic exposure of rice seeds to different doses of y-ray and salinity stress resulted in increased antioxidant enzyme activities and gene-specific modulation of TC-NER pathway
(2014)"Recent reports have underlined the potential of gamma (γ)-rays as tools for seed priming, a process used in seed industry to increase seed vigor and to enhance plant tolerance to biotic/abiotic stresses. However, the ... -
Plant stress and biotechnology
(Hindawi, 2013) -
Analysis of a new strain of Euphorbia mosaic virus with distinct replication specificity unveils a lineage of begomoviruses with short Rep sequences in the DNA-B intergenic region
(2010-10)"Background: Euphorbia mosaic virus (EuMV) is a member of the SLCV clade, a lineage of New World begomoviruses that display distinctive features in their replication-associated protein (Rep) and virion-strand replication ... -
2D-DIGE as a strategy to identify serum biomarkers in Mexican patients with Type-2 diabetes with different body mass index
(2017-04)"Obesity and type 2 diabetes (T2D) are the most prevalent and serious metabolic diseases affecting people worldwide. However racial and ethnic disparities seems to be a risk factor for their development. Mexico has been ... -
Effects of catalase on chloroplast arrangement in Opuntia streptacantha chlorenchyma cells under salt stress
(2017-08)"In arid and semiarid regions, low precipitation rates lead to soil salinity problems, which may limit plant establishment, growth, and survival. Herein, we investigated the NaCl stress effect on chlorophyll fluorescence, ...