Browsing by Title Artículos de revistas

Now showing items 2306-2325 of 2801

    • Spectroscopic and photochemical properties of some annulated boldine derivatives 
      Hidalgo, María E.; Alarcón, Myriam G.; Ojeda, Juan R.; Fernández, Ernesto C.; Sobarzo Sánchez, Eduardo; Fuente, Julio de la (Sociedade Brasileira de Quimica, 2010)
      The aim of this study was to determine the influence of the substituent groups on the photostability of eight boldine derivatives, including some oxazole and oxazinone derivatives, in order to increase the sunscreen ...
    • Spectroscopic characterization of the inclusion complexes of luteolin with native and derivatized β-cyclodextrin 
      Jullian Matthaei, Carolina; Cifuentes, Constanza; Alfaro, Muriel; Miranda, Sebastián; Barriga, Germán; Olea Azar, Claudio (2010)
      The inclusion complexes of Luteolin (LU) with cyclodextrins (CDs) including β-cyclodextrin (βCD), hydroxypropyl-β-cyclodextrin (HPβCD) and dimethyl-β-cyclodextrin (DMβCD), Scheme 1, have been investigated using the method ...
    • Spectroscopic studies of the interaction of 3-(2-thienyl)-[1,2,3]triazolo[1,5-a]pyridine with 2,6-dimethy ... 
      Cifuentes, T.; Cayupi, J.; Celis Barros, C.; Zapata Torres, Gerald; Ballesteros Garrido, Rafael; Abarca B., Isabel Margarita; Julián, C. (Royal Soc Chemistry, 2016)
      The inclusion complexation behavior of 3-(2-thienyl)-[1,2,3]triazolo[1,5-a]pyridine ( TTP) with native beta-cyclodextrin and derivatized cyclodextrins was investigated. Stability constants for complexes with 1 : 1 molar ...
    • Sperm basic nuclear proteins in the bivalve mollusc mesodesma donacium: characterization and comparison ... 
      Galindo, Mario; Rodriguez, Héctor; Olivares, Carlos (1992)
      1. 1. The sperm nuclei of the marine bivalve mollusc Mesodesma donacium contain four somatic-type histones (H2A, H2B, H3 and H4), one sperm histone H1-like and a sperm-specific protein, named by us M1. 2. 2. The histone ...
    • Sperm cryopreservation with supplementation of α-tocopherol and ascorbic acid in freezing media increase ... 
      Figueroa, E.; Farías, J. G.; Lee-Estévez, M.; Valdevenito, I.; Risopatrón, J.; Magnotti, C.; Romero, J.; Watanabe, I.; Oliveira, R. P. S. (Elsevier, 2018)
      The use of alpha-tocopherol and ascorbic acid in freezing medium prevents lipoperoxidation and damage by ROS (reactive oxygen species); however, the effects of these antioxidants in salmonid spermatozoa have not been ...
    • SPHERE dynamical and spectroscopic characterization of HD 142527B 
      Claudi, R.; Maire, A.-L.; Mesa, D.; Cheetham, A.; Fontanive, C.; Gratton, R.; Zurlo, A.; Avenhaus, H.; Bhowmik, T.; Biller, B.; Boccaletti, A.; Bonavita, M.; Bonnefoy, M.; Cascone, E.; Chauvin, G.; Delboulbé, A.; Desidera, S.; D'Orazi, V.; Feautrier, P.; Feldt, M.; Flammini (EDP Sciences, 2019)
      Aims. HD 142527 is one of the most frequently studied Herbig Ae/Be stars with a transitional disk that hosts a large cavity that is up to about 100 au in radius. For this reason, it has been included in the guaranteed time ...
    • SPI-9 of Salmonella enterica serovar Typhi is constituted by an operon positively regulated by RpoS and ... 
      Velásquez, Juan C.; Hidalgo, Alejandro A.; Villagra, Nicolás; Santiviago Cid, Carlos; Mora, Guido C.; Fuentes, Juan A. (Microbiology Soc, 2016)
      The genomic island 9 (SPI-9) from Salmonella enterica serovar Typhi (S. Typhi) carries three ORFs (STY2876, STY2877, STY2878) presenting 98% identity with a type 1 secretory apparatus (T1SS), and a single ORF (STY2875) ...
    • Spin Trapping: An Essential Tool for the Study of Diseases Caused by Oxidative Stress 
      Barriga González, Germán; Olea Azar, Claudio; Zúñiga López, María C.; Folch Cano, Christian; Aguilera Venegas, Benjamín; Porcal, Williams; González, Mercedes; Cerecetto, Hugo (Bentham Science Publ, 2015)
      Electron spin resonance (ESR), called also electron paramagnetic resonance (EPR) together with the spin trapping technique, has allowed us to study and understand how free radicals are involved in various pathologies. In ...
    • Spliced X-Box Binding Protein 1 Couples the Unfolded Protein Response to Hexosamine Biosynthetic Pathway 
      Wang, Zhao V.; Deng, Yingfeng; Gao, Ningguo; Pedrozo Cibils, Zully; Li, Dan L.; Morales, Cyndi R.; Criollo Céspedes, Alfredo; Luo, Xiang; Tan, Wei; Jiang, Nan; Lehrman, Mark A.; Rothermel, Beverly A.; Lee, Ann Hwee; Lavandero González, Sergio; Mammen, Pradeep P .A.; Ferdous, Anwarul; Gillette, Thomas G.; Scherer, Philipp E.; Hill, Joseph A. (Elsevier, 2014-03-13)
      The hexosamine biosynthetic pathway (HBP) generates uridine diphosphate N-acetylglucosamine (UDP-GlcNAc) for glycan synthesis and O-linked GlcNAc (O-GlcNAc) protein modifications. Despite the established role of the ...
    • Spontaneous Excision of the Salmonella enterica Serovar Enteritidis-Specific Defective Prophage-Like Element SE14 
      Santiviago Cid, Carlos; Blondel, Carlos; Quezada, Carolina P.; Silva, Cecilia A.; Tobar, Pia M.; Porwollik, Steffen; McClelland, Michael; Andrews Polymenis, Helene L.; Toro, Cecilia S.; Zaldívar San Román, María Mercedes; Contreras, Inés (2010-04)
      Salmonella enterica serovar Enteritidis has emerged as a major health problem worldwide in the last few decades. DNA loci unique to S. Enteritidis can provide markers for detection of this pathogen and may reveal pathogenic ...
    • Stability of antibacterial silver carboxylate complexes against staphylococcus epidermidis and their cytotoxic ... 
      Aldabaldetrecu, Maialen; Tamayo, Laura; Alarcón, Romina; Walter, Mariana; Salas Huenuleo, Edison; Kogan Bocian, Marcelo; Guerrero, Juan; Páez, Maritza; Azócar, Manuel I. (MDPI AG, 2018)
      © 2018 by the authors. The antibacterial effects against Staphylococcus epidermidis of five silver carboxylate complexes with anti-inflammatory ligands were studied in order to analyze and compare them in terms of stability ...
    • Stability of colloidal silica in the presence of quaternary ammonium salts 
      Rubio, Jorge; Goldfarb, Jorge (1971)
    • Stability of potato chips fried in vegetable oils with different degree of unsaturation. Effect of ascorbyl ... 
      Masson, L.; Robert, P.; Dobarganes, M. C.; Urra, C.; Romero, N.; Ortiz, J.; Goicoechea, E.; Pérez, P.; Salamé, M.; Torres, R. (2002)
      Four vegetable oils with different polyunsaturated/saturated fatty acid ratio (P/S): 5.2 for sunflower oil, 3.4 for canola rapeseed oil, 0.4 for a blend of palm olein and canola rapeseed oil (80:20), and 0.3 for palm olein ...
    • Stability of potato chips fried in vegetable oils with different degree of unsaturation. Effect of ascorbyl ... 
      Masson Salaué, Lilia; Robert Canales, Paz; Dobarganes, Carmen; Urra, Carlos; Romero, Nalda; Ortiz Viedma, Jaime; Goicoechea, E.; Pérez, P.; Salamé, M.; Torres, R. (Consejo Superior de Investigaciones Científicas, Instituto de la Grasa y sus Derivados, 2002)
      Four vegetable oils with different polyunsaturated/saturated fatty acid ratio(P/S):5.2 for sunflower oil, 3.4 for canola rapeseed oil, o.4 for a blend of palm olein and canola rapeseed oil (80:20),and 0.3 for palm olein ...
    • Stability of potato crisps subjected to several conditions of storage Estabilidad de papas crisps sometidas ... 
      Masson, Lilia; Urra, Carlos; Izaurieta, Macarena; Ortiz, Jaime; Robert Canales, Paz; Romero, Nalda; Wittig, Emma (Instituto de la Grasa, 2001)
      The progression of deterioration of crisps stored at room temperature (day light and darkness), and in darkness at 40°C and -23°C (control) was evaluated. The samples were obtained from a leader industry of the chilean ...
    • Stability of quinoa flour proteins (Chenopodium quinoa Willd.) during storage 
      Abugoch James, Lilian; Castro Montero, Eduardo; Tapia Villanueva, Cristián; Añon, María Cristina; Gajardo Repetto, Pilar Inés; Villarroel Véliz, Andrea Carolina (WILEY-BLACKWELL PUBLISHING, 2009-10)
      P>The amino acid composition and the physicochemical and functional properties of quinoa flour proteins (QFP) were evaluated during storage (at 20, 30 and 40 degrees C). Quinoa flour showed a protein content of 14.2 +/- ...
    • Stability of Spray-Dried Encapsulated Carotenoid Pigments from Rosa Mosqueta (Rosa rubiginosa) Oleoresin 
      Robert, P.; Carlsson, R. M.; Romero, N.; Masson, L. (American Oil Chemists' Society, 2003)
      Oleoresin of rosa mosqueta (Rosa rubiginosa) was encapsulated with starch or gelatin by spray-drying. Stability of the powders was studied at 25, 40, and 55°C in the dark. Degradation of trans-rubixanthin, trans-lycopene, ...
    • STABILITY STUDY OF PRAVASTATIN UNDER HYDROLYTIC CONDITIONS ASSESSED BY HPLC 
      Brain Isasi, S.; Requena, C.; Álvarez Lueje, Alejandro (SOC CHILENA QUIMICA, 2008-12)
      In this work all HPLC stability-indicating method was developed and applied to study the hydrolytic behavior of pravastatin in different pi-Is and temperatures. From the system suitability test, the selected chromatographic ...
    • Stability study of simvastatin under hydrolytic conditions assessed by liquid chromatography 
      Álvarez Lueje, Alejandro; Valenzuela, C.; Squella Serrano, Juan; Núñez Vergara, Luis (AOAC INTERNATIONAL, 2005-11)
      In this work, a liquid chromatography stability-indicating method was developed and applied to study the hydrolytic behavior of simvastatin in different pH values and temperatures. The selected chromatographic conditions ...
    • Stable Conjugates of Peptides with Gold Nanorods for Biomedical Applications with Reduced Effects on Cell Viability 
      Adura, Carolina; Guerrero, Simón; Salas, Edison; Medel, Luis; Riveros, Ana; Mena, Juan; Arbiol, Jordi; Albericio, Fernando; Giralt, Ernest; Kogan Bocian, Marcelo (American Chemical Society, 2013)
      Gold nanorods used in therapy and diagnosis must be nontoxic and stable in biological media and should be specific for the target. The complete combination of these three factors has hindered the use of gold nanorods ...