Results 11 to 20 of about 85,516 (198)

Contribución al cálculo de la estabilidad de una presa de Hormigón compactado en puente Canessa, sobre el arroyo Napostá Grande, Provincia de Buenos Aires, Argentina

open access: yesTecnología y Ciencia, 2023
Las crecidas de los ríos motivan la construcción de obras hidráulicas para mitigar el riesgo de inundación. En los años ’50, la Dirección de Hidráulica de la Provincia de Buenos Aires recomendó la construcción de una presa en Puente Canessa sobre el ...
Sandra Fernandez   +3 more
doaj   +1 more source

Bir ve Çok Âmirî Felsefesinde Tanrı ve Âlem

open access: yesAkademik İncelemeler Dergisi, 2018
M. Cüneyt Kaya, Bir ve Çok Âmirî Felsefesinde Tanrı ve Âlem, İstanbul: Klasik Yayınları, 2017, 195 s.
Sümeyye Bayır Taşdemir
doaj   +1 more source

The use of ultrasound in the South Cone region. Advances in organic and inorganic synthesis and in analytical methods

open access: yesUltrasonics Sonochemistry, 2021
In organic and inorganic synthesis and in analytical methods, an external conventional heat source is usually applied to carry out a chemical reaction at a high temperature, or an extraction procedure.
Marcos J. Lo Fiego   +3 more
doaj   +1 more source

Free Monadic Tarski and MMI3-Algebras

open access: yesDemonstratio Mathematica, 2014
MMI3-algebras are a generalization of the monadic Tarski algebras as defined by A. Monteiro and L. Iturrioz, and a particular case of the MMIn+1-algebras defined by A. Figallo.
Entizne Rosana V.   +3 more
doaj   +1 more source

Assessing the Strategic Preparation of Coordination Polymer Particles: A Computational Analysis of the Impact of Different Catechol-Based Ligands

open access: yesChemistry Proceedings, 2023
DFT calculations were applied to an iron/catechol derivative system to investigate their effect on the structure of CPPs as a function of (a) metal valence—Fe+2 and Fe+3 in high- and low-spin states; (b) type of chelating groups in the catechol ...
Matías Capurso   +3 more
doaj   +1 more source

“TYC” Reaction between Alkynes and Catechol-Thiol Derivatives Prompted by Metal Nanocatalysis: Mechanism Study by DFT Calculation

open access: yesChemistry Proceedings, 2022
A recently published article by our research group demonstrated that the hydrothiolation of activated alkynes is a successful way to functionalize thiols bearing catechols.
Matías Capurso   +3 more
doaj   +1 more source

DFT Studies on the Allylation of Styrene Oxide Catalyzed by Indium Nanoparticles (InNPs)

open access: yesChemistry Proceedings, 2022
Allyl–indium species are known to smoothly react with electrophiles as epoxides. The intrinsic tension of these cyclic systems makes them very reactive starting materials, giving access to more complex products through regioselective ring-opening.
Lucía Rossi-Fernández   +3 more
doaj   +1 more source

Capillary electrophoresis to determine entrapment efficiency of a nanostructured lipid carrier loaded with piroxicam

open access: yesJournal of Pharmaceutical Analysis, 2015
A simple and fast capillary electrophoresis method has been developed to determine the amount of piroxicam loaded in a drug delivery system based on nanostructured lipid carriers (NLCs).
Jessica Otarola   +3 more
doaj   +1 more source

Bilateral Jugular Vein and Sigmoid Sinus Thrombosis Related to an Inherited Coagulopathy: An Unusual Presentation

open access: yesCase Reports in Vascular Medicine, 2014
Internal jugular vein thrombosis (IJVT) is a rare condition associated with malignancy, coagulopathy, and trauma. The optimal management of any IJVT must be individualized and depends on the condition of the patient. Case Presentation. We report the case
Özge Altıntaş   +4 more
doaj   +1 more source

Bioactive Diterpenoids Obtained from Grindelia ventanensis Bartola & Tortosa (Asteraceae)

open access: yesChemistry Proceedings, 2022
Grindelia ventanensis (Asteraceae) is an endemic species growing wild in Argentina. In this work, we studied the dichloromethane extract of this plant for their antioxidant activity and cholinesterase inhibition.
Silvana Andrea Rodriguez   +3 more
doaj   +1 more source

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