Facultad de Ciencias Exactas y Naturales y Agrimensura: Envíos recientes
Mostrando ítems 2221-2240 de 2379
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Non essential element concentrations in brown grain rice : assessment by advanced data mining techniques
(Springer, 2017-04-10)The concentrations of 17 non-essential elements (Al, As, Ba, Be, Cd, Ce, Cr, Hg, La, Li, Pb, Sb, Sn, Sr, Th, Ti, and Tl) were determined in brown grain rice samples of two varieties: Fortuna and Largo Fino. The samples ... -
Tracing the geographical origin of Argentinean lemon juices based on trace element profiles using advanced chemometric techniques
(Elsevier, 2016-07-02)This study examines the application of chemometric techniques associated with trace element concentrations for origin evaluation of lemon juice samples. Seventy-four lemon juice samples from three different provinces of ... -
Multivariate classification of honeys from Corrientes (Argentina) according to geographical origin based on physicochemical properties
(Elsevier, 2016-05-14)Honey is the natural sweet substance produced by Apis mellifera bees and is studied in different countries and zones because of the interest of consumers in origin and quality of food. The Corrientes Province (Argentina) ... -
Análisis morfológico e interpretación filogenética del género Fulvifomes Murrill (Hymenochaetaceae Donk) en Sudamérica
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 2020)Fulvifomes, un género de Hymenochaetaceae, tradicionalmente fue caracterizado por sus basidiomas perennes con un sistema hifal dimítico, setas ausentes en el himenio y las basidiosporas marrones rojizas. No obstante, ... -
Una introducción al tapiz verde del Noroeste de Corrientes y del Chaco
(Facultad de Ciencias Exactas y Naturales y Agrimensura. Departamento de Biología, 2018)Recorrer el Nordeste argentino es encontrarse en medio de un paisaje dominado por un verde de distintos tonos que se extiende hacia los cuatro puntos cardinales, confundiéndose en el horizonte con cielo y nubes; es admirar ... -
Tafonomía y modos de preservación de los espinicaudados (crustacea-branchiopoda) de la formación La Matilde (jurásico medio) de la Provincia Santa Cruz (Argentina)
(Asociación de Universidades Grupo Montevideo, 2017)El propósito de este trabajo fue identificar las especies de espinicaudados provenientes de seis localidades de la Fm. La Matilde, describir los modos preservacionales y determinar los procesos tafonómicos involucrados en ... -
Classification of organic olives based on chemometric analysis of elemental data
(Elsevier, 2018)The aim of this study was to discriminate organic from conventional olive samples based on the levels of macro and trace elements, combined with chemometric techniques. Ten elements (Na, K, Ca, Fe, Mg, Cu, Zn, Se, S and P) ... -
Caracterización de acumuladores solares utilizados en programas de electrificación rural en la Argentina
(Associação Brasileira de Energia Solar, 2014-04-03)En la República Argentina el Proyecto de Energías Renovables en Mercados Rurales (PERMER) tiene como objetivo principal el abastecimiento de electricidad a viviendas, centros de salud y escuelas rurales mediante la instalación ... -
Determining the geographical origin of Sechium edule fruits by multielement analysis and advanced chemometric techniques
(Elsevier, 2016)This paper describes the determination and evaluation of the major and trace element composition (Al, As, Ba, Ca, Cd, Co, Cu, Fe, K, Mg, Mn, Na, Pb, Sr and Zn) of Sechium edule (Jacq) Swartz fruits collected from four ... -
Trace element concentrations in commercial gluten free amaranth bars
(Springer, 2015)Gluten-free foods are specially designed to be consumed by people who suffer from celiac disease or some type of gluten intolerance. Few studies are currently available about trace element contents in gluten-free ... -
In situ late triassic fossil conifer woods from the fluvial channel deposits of the Soturno River (Caturrita formation, Rio Grande do Sul, Brazil)
(Czech Geological Society, 2016)Three new fossil gymnosperm woods are described from a new outcrop exposed on the margins of the Soturno River, State of Rio Grande do Sul, eastward located in relation to other well-known petrified forests from São Pedro ... -
Maderas neógenas de Cerro Pampa, Catamarca, Argentina
(Museo Argentino de Ciencias Naturales Bernardino Rivadavia, 2018)Por primera vez se da a conocer el registro de maderas angiospérmicas de Fabaceae de la localidad de Cerro Pampa (Catamarca). Estratigráficamente proceden de los sedimentos de la Formación Chiquimil que pertenece al Grupo ... -
Analytical method for the determination of surfactants with fluorescent activity, present in liquid effluents from textile industries, by HPLC fluorescence
(Science Domain International, 2017)In textile industries effluents we can be found surfactants of various characteristics, alkalis, and sulfides partially or totally hydrolyzed dyes, among other things, which are used as dyeing material. This study aims to ... -
Multielemental composition and nutritional value of "dumosa" (Ilex dumosa), "yerba mate" (I. paraguariensis) and their commercial mixture in different forms of use
(Universidad Nacional de Cuyo. Centro Coordinador de Ediciones Académicas, 2016)The multielement composition and nutritional value of "dumosa" (Ilex dumosa) (ID), "yerba mate" (I. paraguariensis) (IP) and their commercial 70:30 mixture (ID:IP, w/w) in crude drug, brewed mate and tea-bag-like infusion ... -
Multiway calibration strategy with chromatographic data exploiting the second order advantage for quantitation of three antidiabetic and three antihypertensive drugs in serum samples
(Elsevier, 2018)This paper proposes a multiway calibration strategy implementing the modeling with MCR-ALS and U-PLS/RBL of second-order chromatographic data for quantitation of six analytes: gliclazide, glibenclamide, glimepiride, atenolol, ... -
Chemometric optimization and validation of a novel dispersive liquid liquid microextraction HPLC method for gliclazide, glibenclamide and glimepiride quantitation in serum samples
(Elsevier, 2016)A dispersive liquid–liquid micro extraction (DLLME) liquid chromatographic method that allows extraction and separation of gliclazide, glibenclamide and glimepiride from serum was developed and optimized with the use of ... -
Siraty, una nueva localidad fosilífera con maderas y estípites de la formación Tacuary (pérmico superior), Paraguay
(Museo Argentino de Ciencias Naturales Bernardino Rivadavia, 2018)Se describen maderas y estípites silicificados provenientes de Siraty, una nueva localidad fosilífera de la Formación Tacuary (Pérmico superior), Paraguay. Se identificó Tuvichapteris solmsi Herbst (Marattiales) y los ... -
New gymnosperm wood fossils, a seed ovule structure, and a new generic affinity to cedroxylon canoasense rau from the permian and triassic jurassic of southern Brazil
(Sociedad Brasileira de Pleontología, 2018)Two new species of gymnosperm wood from the Triassic–Jurassic of Brazil are here described [Lobatoxylon kaokense Kräusel and Chapmanoxylon jamuriense (Maheswari) Pant & Singh], and a new age and generic a nity are proposed ... -
Buckya austroamericana nov. gen. et sp. (Bennettitales) from the upper triassic Laguna Colorada formation (El Tranquilo Group), Santa Cruz province, Argentina
(Universidad Nacional de Tucumán. Instituto Superior de Correlación Geológica, 2016)Siraty, a new fossiliferous locality with woods and stipes of the Tacuary Formation (upper Permian), Paraguay. Silicified fossil woods and arborescent stems from Siraty, a new fossiliferous locality of the Tacuary Formation ... -
Multicenter (FX)n/NH3 halogen bonds (X = Cl, Br and n = 1–5). QTAIM descriptors of the strength of the X…N interaction
(Molecular Diversity Preservation International, 2017)In the present work an in depth deep electronic study of multicenter XBs (FX)n/NH3 (X = Cl, Br and n = 1–5) is conducted. The ways in which X X lateral contacts affect the electrostatic or covalent nature of the X N ...
