Search Results - "vacuum"

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    Chemical Composition and Biological Activities of Oregano Essential Oil and Its Fractions Obtained by Vacuum Distillation by Rostro Alanís, Magdalena de Jesús, Báez González, Juan Gabriel, Torres Álvarez, Cynthia, Parra Saldívar, Roberto, Rodríguez Rodríguez, José, Castillo, Sandra

    Published 2019
    “…Aiming to achieve the best use of this resource, the present study focuses on the characterization of separated fractions of Ooil by fractional vacuum distillation at low pressure. Four fractions (F1−F4) and undistilled oil (Unoil) were separated from Ooil and analyzed for their chemical composition and biological activities, such as antioxidant and antimicrobial activities. …”
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    A calculation of the physical mass of sigma meson by Morones Ibarra, José Rubén, Santos Guevara, Ayax

    Published 2007
    “…We calculate the physical mass and the width of the sigma meson by considering that it couples in vacuum to two virtual pions. The mass is calculated by using the spectral function, and we find that it is about 600 MeV. …”
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    Mass shift of σ-meson in nuclear matter by Morones Ibarra, José Rubén, Menchaca Maciel, Mónica del Carmen, Santos Guevara, Ayax, Robledo Padilla, Felipe Ángel

    Published 2013
    “…It is found that the σ-meson mass decreases with respect to its value in vacuum and that the contribution of the σ–ω mixing effect on the mass shift is relatively small.…”
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    Synthesis and characterization of metal nanoparticles by pulsed laser ablation in liquid media (PLAL) by Mendivil Palma, María Isabel

    Published 2015
    “…In this thesis we report an easy, fast, alternative-novel and one-step method for the preparation of pure and stable (in some cases) noble metal nanoparticles, viz Pulsed Laser Ablation in liquid media; this method presents significant advantages over chemical routes as: pure metal nanoparticles production, less aggregation, non-vacuum requirements, non-toxic agents are required, size and shape tunability, between others. …”
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    Alternative calculation of the physical mass of the p-meson by Morones Ramírez, Rubén, Mejía Rosales, Sergio

    Published 2005
    “…We have derived an expression for the physical mass and width of the ρ-meson in vacuum from its spectral function, calculated in the vector meson dominance model when a ρ 0 meson couples to two virtual pions π +–π −. …”
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    Synthesis and characterization of metal nanoparticles by pulsed laser ablation in liquid media (PLAL) by Mendivil Palma, María Isabel

    Published 2015
    “…In this thesis we report an easy, fast, alternative-novel and one-step method for the preparation of pure and stable (in some cases) noble metal nanoparticles, viz Pulsed Laser Ablation in liquid media; this method presents significant advantages over chemical routes as: pure metal nanoparticles production, less aggregation, non-vacuum requirements, non-toxic agents are required, size and shape tunability, between others. …”
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    Tesis
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    Recent Advances in Synthesis and Properties of Hybrid Halide Perovskites for Photovoltaics by Vidyasagar, C. C., Muñoz Flores, Blanca M., Jiménez Pérez, Víctor Manuel

    Published 2018
    “…The power conversion efficiency has been up to 14% by a one-step vacuum deposition technique. A serious concern is the toxicity of the materials. …”
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    Copper antimony sulfide thin films by spray pyrolysis for photovoltaic applications. by Aquino Ramos, José Agustín

    Published 2017
    “…The spray pyrolysis technique is a chemical deposition that it does not need vacuum and also the process is carried at low temperatures near 500 �C. …”
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    Tesis
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    Experimental study of the influence of stitched nylon threads in glass-fiber-reinforced polymer two-dimensional multilayer composite on tensile strength by Lira Martínez, Manuel Alejandro, Gaona Tiburcio, Citlalli, Almeraya Calderón, Facundo, Jáquez Muñoz, Jesús Manuel, Zalapa Garibay, Manuela Alejandra

    Published 2023
    “…This research focuses on the study of the tensile strength effect of stitched low-density Barkley FBA BGQS15-15 nylon monofilament on biaxial E-Glass Saertex 830 g/m2 (+/−45◦) cured with Polyester Sypol Resin 8086 CCP using a vacuum infusion process. Four specimens were made with longitudinal distances between the stitched reinforcements of 0.5, 1.0, 1.5, and 2.0 cm, respectively. …”
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    Article
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    Copper antimony sulfide thin films by spray pyrolysis for photovoltaic applications. by Aquino Ramos, José Agustín

    Published 2017
    “…The spray pyrolysis technique is a chemical deposition that it does not need vacuum and also the process is carried at low temperatures near 500 �C. …”
    Get full text
    Tesis
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    Experimental study of the influence of stitched nylon threads in glass-fiber-reinforced polymer two-dimensional multilayer composite on tensile strength by Lira Martínez, Manuel Alejandro, Gaona Tiburcio, Citlalli, Almeraya Calderón, Facundo, Jáquez Muñoz, Jesús Manuel, Zapala Garibay, Manuela Alejandra

    Published 2023
    “…This research focuses on the study of the tensile strength effect of stitched low-density barkley FBA BGQS15-15 nylon monofilament on biaxial e-glass saertex 830 g/m2 (+/−45°) cured with polyester sypol resin 8086 CCP using a vacuum infusion process. Four specimens were made with longitudinal distances between the stitched reinforcements of 0.5, 1.0, 1.5, and 2.0 cm, respectively. …”
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    Article
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    Thin films of arsenic sulfide by chemical deposition and formation of InAs by Peña Méndez, Yolanda, Nair Maileppallil, Santhamma, Nair Padmanabhan, Karunakaran

    Published 2006
    “…We report a method for obtaining thin films of arsenic sulfide by chemical bath deposition and the subsequent formation of InAs by heating the films with a vacuum-deposited coating of In. X-ray diffraction (XRD) studies have shown that the thin film deposited from chemical baths of pH ∼2, prepared by mixing aqueous acidic solutions of As(III) with sodium thiosulfate, is a composite film of crystalline As2O3 and As2S3, with the incorporation of sulfur. …”
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    Effect of Three Types of Drying on the Viability of Lactic Acid Bacteria in Foam-Mat Dried Yogurt by Gallardo Rivera, Claudia Tomasa, Báez González, Juan Gabriel, García Alanís, Karla G., Torres Álvarez, Cynthia, Dares Sánchez, Karla, Szymanski, Ana, Amaya Guerra, Carlos Abel, Castillo, Sandra

    Published 2021
    “…Abstract: In this research, foaming technology was applied to obtain powdered yogurt from commercial yogurt at lower temperatures than the typical temperatures used during the dehydration process; the viability of lactic acid bacteria (LAB) was evaluated after the application of different drying techniques (conventional drying, freeze drying, and vacuum drying). Three different formulas (F1, F2, and F3) based on a foaming agent (albumen), stabilizers (guar gum), and prebiotics sources (inulin and agave syrup) were developed. …”
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    Effects of Nb additions and heat treatments on the microstructure, hardness and wear resistance of CuNiCrSiCoTiNbx high-entropy alloys by Avila Salgado, Denis Ariel, Juárez Hernández, Arturo, Lara Banda, María, Bedolla Jacuinde, Arnoldo, Guerra, Francisco V.

    Published 2022
    “…Abstract: In this research, a set of CuNiCrSiCoTi (H-0Nb), CuNiCrSiCoTiNb0.5 (H-0.5Nb) and CuNiCrSiCoTiNb1 (H-1Nb) high-entropy alloys (HEAs) were melted in a vacuum induction furnace. The effects of Nb additions on the microstructure, hardness, and wear behavior of these HEAs (compared with a CuBe commercial alloy) in the as-cast (AC) condition, and after solution (SHT) and aging (AT) heat treatments, were investigated using X-ray diffraction, optical microscopy, and electron microscopy. …”
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