Artículos de revista: Envíos recientes
Mostrando ítems 141-160 de 887
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Fast venomic analysis of Crotalus durissus terrificus from northeastern Argentina
(Elsevier, 2020-09)The complete knowledge of the toxins that make up venoms is the base for the treatment of snake accidents victims and the selection of specimens for the preparation of venom pools for antivenom production. In this work, ... -
Musa spp. cultivars as a neutralising source against some toxic activities of Bothrops and Crotalus genus snake venoms
(Elsevier, 2023-06)Accidents involving snakes from Bothrops spp. and Crotalus spp. constitute the most important cause of envenomation in Brazil and Argentina. Musa spp. (banana) have been reported to be used in popular medicine against ... -
Ipomoea carnea alkaloid extract vs swainsonine : a comparative study on cytotoxic activity against glial cells
(Elsevier, 2023-11)The consumption of Ipomoea carnea produces a neurological syndrome in animals. The toxic principles of I. carnea are the alkaloids swainsonine (SW) and calystegines B1, B2, B3 and C1. In this study, we investigated the ... -
Photobiomodulation therapy on local effects induced by juvenile and adult venoms of Bothrops alternatus
(Elsevier, 2022-12)Bothrops snake envenomation is characterized by severe local manifestations such as pain, edema, inflammation, hemorrhage, and myonecrosis. Furthermore, it is described that venom from juvenile and adult snakes may have ... -
Synergism between baltergin metalloproteinase and Ba SPII RP4 PLA2 from Bothrops alternatus venom on skeletal muscle (C2C12) cells
(Elsevier, 2012-02)Acute muscle damage, myonecrosis, is one of the main characteristics of envenoming by Bothrops genus. In this in vitro study we investigated the role of a metalloproteinase (baltergin) and an acidic phospholipase A2 (Ba ... -
Confinement effects in protonation reactions catalyzed by zeolites with large void structures
(American Chemical Society, 2018)In the present work, we studied the protonation reaction of styrene inside the cavity of acidic H-Y zeolite. Density functional theory calculation using M06-2X functional and analysis of quantum theory of atoms in molecules ... -
Study of confinement and catalysis effects of the reaction of methylation of benzene by methanol in H-Beta and H-ZSM-5 Zeolites by topological analysis of electron density
(American Chemical Society, 2018)In this work we studied the host-guest interactions between confined molecules and zeolites, and their relationship with the energies involved in the reaction of methylation of benzene by methanol in H-ZSM-5 and H-Beta ... -
Preferential formation of the different hydrogen bonds and their effects in tetrahydrofuran and tetrahydropyran microhydrated complexes
(American Chemical Society, 2012)The role of cycloether−water (c−w) and water−water (w−w) hydrogen bonds (H-bonds) on the stability of the tetrahydrofuran THF/(H2O)n and the tetrahydropyran THP/(H2O)n complexes with n = 1−4 was investigated herein using ... -
Do organometallic CH4-Me+p adducts and X4H+ (X = P, As) clusters undergo two-electron three-center interactions? Some aspects of discussion
(American Chemical Society, 2015)Most of the systems possessing true two-electron three-center interactions are electron deficient compounds like boron hydrids, closo-boranes, and some organic ions such as butonium cations. In this work, we perform a ... -
Structural, energetic, and UV-Vis spectral analysis of UVA filter 4‑tert-Butyl-4′-methoxydibenzoylmethane
(American Chemical Society, 2014)The growing awareness of the harmful effects of ultraviolet (UV) solar radiation has increased the production and consumption of sunscreen products, which contain organic and inorganic molecules named UV filters that absorb, ... -
Double hole-lump interaction between halogen atoms
(American Chemical Society, 2015)In this paper a theoretical study has been carried out to investigate the nature of the unusual halogen− halogen contacts in the complexes R−X···X−R (with R = −H, −Cl, −F and X = Cl, Br, I). AIM, NBO, and MEP analyses have ... -
Study of the structural and electronic properties of valproic acid and new derivatives used as anticonvulsant agents
(American Chemical Society, 2011)The conformational and electronic characteristics of the polar O9dC8—X10 moiety in the anticonvulsant valproic acid (Vpa) drug and some of their amides and ester derivatives are analyzed at the B3LYP level using the ... -
Intrinsic antioxidant potential of the aminoindole structure. A computational kinetics study of tryptamine
(American Chemical Society, 2018)A computational kinetics study of the antioxidant activity of tryptamine toward HO* and HOO* radicals in water at 298 K has been carried out. Density functional methods have been employed for the quantum chemical calculations ... -
Strength and nature of hydrogen bonding interactions in mono-and di-hydrated formamide complexes
(American Chemical Society, 2011)In this work, mono- and di-hydrated complexes of the formamide were studied. The calculations were performed at the MP2/6-311þþG(d,p) level of approximation. The atoms in molecules theory (AIM), based on the topological properties ... -
Una nueva especie de Meianophryniscus (Anura : bufonidae) del grupo stelzneri de Corrientes, Argentina
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 1999)Se describe Meianophryniscus cupreuscapularis sp. nov., del grupo Meianophryniscus stelzneri, de la región noroeste de la provincia de Corrientes, Argentina. Se lo puede distinguir de las otras especies por su coloración ... -
Maned wolf’s diet in a protected area in Northeastern Argentina
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 2024)El aguará guazú (Chrysocyon brachyurus), es la especie de cánido más grande de Sudamérica. En Argentina la información de su dieta es escasa. Describimos sus hábitos alimentarios a través de las heces colectadas en la ... -
First contribution to the genus Gymnopilus (Agaricales, Strophariaceae) in Paraguay
(Jardim Botânico do Rio de Janeiro, 2021)Gymnopilus is characterized by its ferruginous-yellow basidiomata and lamellae, ferruginous spore print, ellipsoidal basidiospores with warty and rough ornamentation, and lacking a germinative pore. Here, novel data on the ... -
Simultaneous determination of aspartame and acesulfame-K by molecular absorption spectrophotometry using multivariate calibration and validation by high performance liquid chromatography
(Elsevier, 2009-08-01)A new method to determine mixtures of two sweeteners, aspartame and acesulfame-K, in commercial sweeteners is proposed. A classical 52 full factorial design for standards was used for calibration in the concentration matrix. ... -
Biología reproductiva y desarrollo del esqueleto de Polychrus acutirostris (Iguania, Polychrotidae)
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 2005)Se describe el desarrollo del esqueleto craneal y poscraneal del Polychrus acutirostris procedente de una población del nordeste de la provincia de Formosa, (Argentina.) y se comparan con Liolaemus scapularis, L. quilmes ... -
Evaluation of phenolic compounds and antioxidant capacity in Mucuna pruriens and Cajanus cajan pods extracts
(Elsevier, 2023-12-01)The seeds of Mucuna pruriens (Mp) and Cajanus cajan (Cc) legumes are known to be rich in phenolic compounds (PC) that have various beneficial properties. However, there is limited knowledge on the composition of their pods ...
