Mostrando recursos 21 - 40 de 62,262

  1. Edited by:

    Ariadna González-solís; Dora L. Cano-ramírez; Francisco Morales-cedillo; Cinthya Tapia De Aquino; Sébastien Mongrand Centre; Facultad De Química; Conj E
    doi: 10.3389/fpls.2014.00003 Arabidopsis mutants in sphingolipid synthesis as tools to understand the structure and function of membrane microdomains in plasmodesmata

  2. Diseño e implementación de guías de laboratorio para la enseñanza del concepto químico ácido-base, empleando extractos vegetales

    Herrera Jaramillo, Milton Marino

  3. 1Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro,

    Rafael A. De Sá; Frederico A. V. De Castro; Elis C. A. Eleutherio; Raquel M. De Souza; Joaquim F. M. Da Silva; Marcos D. Pereira
    Propolis is a natural product widely used for humans. Due to its complex composition, a number of applications (antimicrobial, antiinflammatory, anesthetic, cytostatic and antioxidant) have been at-tributed to this substance. Using Saccharomyces cerevisiae as a eukaryotic model we investigated the mechanisms underlying the antioxidant effect of propolis from Guarapari against oxidative stress. Submitting a wild type (BY4741) and antioxidant deficient strains (ctt1, sod1, gsh1, gtt1 and gtt2) either to 15 mM menadione or to 2 mM hydrogen peroxide during 60 min, we observed that all strains, except the mutant sod1, acquired tolerance when previously treated with 25 g/mL of alco-holic...

  4. $rec.titulo

    Miguel Arturo Salazar; Beatriz Yadira Salazar; M Intaglietta; Pedro Cabrales; Facultad De Ciencias Químicas; Gómez Palacio; Correspondence Pedro Cabrales
    which permits unrestricted noncommercial use, provided the original work is properly cited.

  5. 3Laboratorio de Investigación en

    Thomas Scior; Hans-georg Mack; José Antonio; Guevara García; Wolfhard Koch; Facultad De Ciencias Químicas; Physikalische Chemie Universität; Tübingen Tübingen Germany; Estudios Superiores Zaragoza (fesz; De Ciencias Químicas
    Conversion of inactive trans- to bioactive cis-BMOV for possible binding to target PTP-1B

  6. Martínez-Toledo Ángeles1,2, Rodríguez-Vázquez Refugio2

    Facultad De Ciencias Químicas; San Luis Potosí; San Luis Potosí
    situ biosurfactant production and hydrocarbon removal by Pseudomonas putida

  7. Eleazar Martínez-Barajas, Departamento de Bioquímica,

    Matthew Paul; Frederik Börnke; Pierre Crozet; Fundação Calouste; Facultad De Química
    doi: 10.3389/fpls.2014.00196 The activity of SnRK1 is increased in Phaseolus vulgaris seeds in response to a reduced nutrient supply Patricia Coello and Eleazar Martínez-Barajas*

  8. International Journal of Nanomedicine Dovepress submit your manuscript | www.dovepress.com

    Jorge G Fernández; María J Serrano; María I Sanz; Juan J Diaz-mochón; José A Lorente; Julio Raba; De Química
    M e t h o d o l o g y open access to scientific and medical research open Access Full text Article

  9. RESEARCH ARTICLE Virtual and In Vitro Screens Reveal a Potential Pharmacophore that Avoids the Fibrillization of Aβ1–42

    Maricarmen Hernández-rodríguez; José Correa-basurto; María Inés Nicolás; René Mir; Claudia Guadalupe Benítez-cardoza; Arturo Reséndiz-albor; Juan Vicente Méndez-méndez; Martha C. Rosales-hernández; Delegación Miguel Hidalgo; México D. F; Quimica Inorgánica; Luis Enrique; U. Prof; Adolfo López Mateos; A. Madero; México D. F
    Among the multiple factors that induce Alzheimer’s disease, aggregation of the amyloid β peptide (Aβ) is considered the most important due to the ability of the 42-amino acid Aβ pep-tides (Aβ1–42) to form oligomers and fibrils, which constitute Aβ pathological aggregates. For this reason, the development of inhibitors of Aβ1–42 pathological aggregation represents a field of research interest. Several Aβ1–42 fibrillization inhibitors possess tertiary amine and aromatic moieties. In the present study, we selected 26 compounds containing tertiary amine and aromatic moieties with or without substituents and performed theoretical studies that allowed us to select four compounds according to their...

  10. Reviewed by:

    The Exoribonuclease Polynucleotide Phosphorylase; Jason A. Rosenzweig; Ashok K. Chopra; Wyndham W. Lathem; Cecilia M. Arraiano; Tecnologia Química; Kurt Schesser; Jason A. Rosenzweig; Ashok K. Chopra; Department Of
    influences the virulence and stress responses of yersiniae and many other pathogens

  11. © 2012 Hernandez-Delgadillo et al, publisher and licensee Dove Medical Press Ltd. This is an Open Access article

    David Diaz; Katiushka Arevalo-niño; Marianela Garza-enriquez; Myriam A De La Garza; Claudio Cabral-romero; Facultad De Odontologia; Autonoma De Nuevo Leon; Nuevo Leon; De Quimica; Autonoma De Mexico; De La Salud; Gonzalitos Norte
    which permits unrestricted noncommercial use, provided the original work is properly cited. International Journal of Nanomedicine 2012:7 2109–2113 International Journal of Nanomedicine Zerovalent bismuth nanoparticles inhibit Streptococcus mutans growth and formation of biofilm

  12. The adding-doubling method

    Química Aromática Sa; Río Gr; Col Santa; Catarina Acolman
    rm pe es l d s r t th

  13. Estudio químico-mineralógico de los perfiles lateríticos ferrosialíticos en los sectores Téneme, Farallones y Cayo Guam, en el noreste de Cuba

    Njila, Tendai; Díaz Martínez, Roberto
    The results of a chemical-mineralogical study on the ferrosialitic lateritic weathering profiles are presented. Analysis was done using X Ray Fluorescence and Diffraction. The chemical composition of these profiles reflects a typical pattern normally observed within such weathering crusts. The sesquioxides of aluminium, iron are concentrated in the upper parts of the profiles as a result of the leaching of alkalis, alkaline-earth elements, and to a lesser extent, silica. Ferrosialitic lateritic profiles formed on Cretaceous and Paleogene islands arcs consist of secondary minerals such as gibbsite, kaolinite, goethite, hematite and montmorillonite, while those associated with basic and volcanogenicsedimentary rocks of ophiolitic...

  14. Rediseño y construcción de un condensador para el estudio de convección forzada

    Lucena, Maria Gabriela; Rodriguez, Juan Enrique; Linarez Ponce, Carlos Alfredo
    El rediseño y construcción de un condensador de tubos y coraza destinado al estudio de convección forzada, con y sin cambio de fase fue desarrollado con el propósito de dotar al Laboratorio de Fenómenos de Transporte de la UNEXPO Vice-rectorado Barquisimeto, de un equipo didáctico para realizar experiencias prácticas que permitan analizar los fenómenos mencionados. La investigación se realizó en tres fases: la primera fue el diagnóstico, llevada a cabo a través de la técnica de la encuesta; la segunda correspondió a la factibilidad técnico-económica, que involucró el rediseño, selección de materiales y determinación de costos; y la última fue...

  15. Reviewed by:

    Nabila Haddad; Katell Rivoal; Didier Chevret; Quentin Nonglaton; Christopher M. Burns; Hervé Prévost; Arnoud H. M. Van Vliet; Cecilia M. Arraiano; Tecnologia Química E; Nabila Haddad
    doi: 10.3389/fcimb.2012.00030 Polynucleotide phosphorylase has an impact on cell biology of Campylobacter jejuni

  16. 2Departamento de Química, Instituto de Ciencias Exactas y Terrestres,

    Julia Del C. Martínez-rodríguez; Marcela De La Mora-amutio; Luis A. Plascencia-correa; Esmeralda Audelo-regalado; Francisco R. Guardado; Elías Hernández-sánchez; Yuri J. Peña-ramírez; Adelfo Escalante; Miguel J. Beltrán-garcía; Tetsuya Ogura
    endophytic bacteria from leaf bases of Agave tequilana

  17. Bioquímica, Facultad de Química,

    Snrk Subunits Akinβ; Ra Ávila-castañeda; Natalia Gutiérrez-granados; Ana Ruiz-gayosso; Nigel G. Halford; Axel Tiessen; Centro De; Patricia Coello
    Specialized carbohydrate-binding domains, the Starch-Binding Domain (SBD) and the Glycogen Binding Domain (GBD), are motifs of approximately 100 amino acids directly or indirectly associated with starch or glycogen metabolism. Members of the regulatory β subunit of the heterotrimeric complex AMPK/SNF1/SnRK1 contain an SBD or GBD. In Arabidopsis thaliana, the β regulatory subunit AKINβ2 and a γ-type subunit, AKINβγ, also have an SBD. In this work, we compared the SBD of AKINβ2 and AKINβγ with the GBD present in rat AMPKβ1 and demonstrated that they conserved the same overall topology. The majority of the amino acids identified in the protein-carbohydrate interactions...

  18. and Industrial Biotechnology, a section of the journal Frontiers in

    Eugénio C. Ferreira; Isabel Belo; Francisco Valero; D’enginyeria Química Escola; Garcia-ortega X; Reyes C; Montesinos Jl; Valero F; Xavier Garcia-ortega; Cecilia Reyes; José Luis Montesinos; Francisco Valero
    This article was submitted to Process

  19. 4Departamento de Engenharia Química, Universidade Tecnológica Federal do Paraná,

    Marcus M; Olesi Sá; Misael Ferreira; Emerson Silva Lima; Ivanildes Dos Santos; Patrícia Puccinelli Orl; Luciano Fern; Ponta Grossa
    Bacterial resistance to commonly used antibiotics has been recognized as a significant global health issue. In this study, we carried out the screening of a family of allylic thiocyanates for their action against a diversity of bacteria and fungi with a view to developing new antimicrobial agents. Allylic thiocyanates bearing halogenated aryl groups, which were readily obtained in two steps from the Morita-Baylis-Hillman adducts, showed moderate-to-high activity against selective pathogens, in-cluding a methicillin-resistant S. aureus (MRSA) strain. In particular cases, methyl (Z)-3-(2,4-dichlorophenyl)-2-(thiocyanomethyl)-2-propenoate exhibited antimicrobial activity comparable to the reference antibiotic Imipenem. Key words: antimicrobial, allylic thiocyanate, Morita-Baylis-Hillman reaction, MRSA.

  20. Correspondence to

    Simone Georges; El Khouri Miraglia; Mariana Matera Veras; Luis Fern; O Amato-lourenço; O Rodrigues-silva; Paulo Hilário; Nascimento Saldiva; Veras Mm Amato; Lourenço L F; Et Al. Follow-up; Paulo Unifesp; Ciências Ambientais; Químicas E Farmacêuticas
    Follow-up of the air pollution and the human male-to-female ratio analysis in São Paulo, Brazil: a times series study

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.