Results 41 to 50 of about 202,211 (159)

In Vitro Cytotoxicity of Fluorinated Quaternary Ammonium Salts in Colorectal Cancer Cells and In Silico Pharmacology

Advances in Pharmacological and Pharmaceutical Sciences
Colorectal cancer (CRC) is a multifactorial disease driven by genetic and epigenetic alterations that modulate specific metabolic pathways. Despite the availability of effective treatments like 5-fluorouracil (5-FU), pharmacological therapy for CRC still
Adriana Milena Olarte Aponte, Victoria Ospina, Sergio A. Pulido, Luz Amalia Ríos-Vásquez, Luz Adriana Betancur Jaramillo, Carlos Mario Muñetón Peña, Rogelio Ocampo-Cardona, Sara M. Robledo   +7 more
doaj   +1 more source

El modelo didáctico de la formación de un cuadro químico del mundo en los estudiantes : una vía para el cambio conceptual [PDF]

, 1995
In this paper we develop a general definition of the study of Chemistry that responds to the need to form in the students a chemical picture of the world in accordance with the didactic model developed by the authors to systematize the contents in ...
Ferro, V. R., González Jonte, R. H.
core   +2 more sources

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

Advanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas, Lucía Torrico‐García‐Viso, Jose Antonio Suárez del Pino, Nekane Aramburu‐Merino, Pilar Segovia, Enrique G. Michel, Josep Puigmartí‐Luis, Enrique Velasco, Pedro Tarazona, Daniel Maspoch, David Rodríguez‐San‐Miguel, Félix Zamora   +11 more
wiley   +1 more source

Structural Studies of Sodium Counterion on Naproxen: From Solid State to Stability

Advanced Physics Research
Naproxen (NPX) is a widely used nonsteroidal anti‐inflammatory drug (NSAID) with limited aqueous solubility, commonly formulated as its sodium salt (SNPX) to enhance dissolution and absorption.
Antônio S. N. Aguiar, Pietra Z. Felimberti, Vitor S. Duarte, Leonardo L. Borges, Ademir J. Camargo, Pal Perjesi, Hamilton B. Napolitano   +6 more
doaj   +1 more source

Unsupervised learning techniques for clustering analysis of physicochemical properties in the periodic table elements

Results in Chemistry
The Periodic Table of Elements, a cornerstone of chemical sciences, has traditionally been structured based on the physicochemical properties of its elements.
Sebastián Consuegra-Jiménez, Cesar Tovio-Gracia, Ricardo Vivas-Reyes   +2 more
doaj   +1 more source

La argumentación de profesores de Química en formación inicial (“Práctica Profesional Docente II”): un estudio de caso en Colombia [PDF]

, 2014
Des de perspectives habituals de l'educació, s'evidencia que l'argumentació ha estat reduïda a una tècnica de la didàctica de les Ciències quan, en realitat, es tracta d'una mica més complex.
Archila, Pablo
core   +3 more sources

A Soft, Flexible Implant for Wireless Photothermal–Pyroelectric Neurostimulation

Advanced Science, EarlyView.
A replication strategy is used to enlarge the exposed surface area of barium titanate within flexible films with embedded carbon nanotubes, enabling efficient photothermal‐pyroelectric stimulation. Polar crystalline nanosheets show superior performance in guiding neural progenitor cells toward neuronal differentiation.
Jiang Wu, Minmin Mao, Beltzane Garcia Cirera, Hao Ye, Xiangzhong Chen, Josep Puigmartí‐Luis, Ni Qin, Salvador Pané   +7 more
wiley   +1 more source

Synthesis, Molecular Structure, Thermal and Spectroscopic Analysis of a Novel Bromochalcone Derivative with Larvicidal Activity

Crystals, 2022
Chalcones belong to the flavonoids family and are natural compounds which show promising larvicidal property against Aedes aegypti larvae. Aiming to obtain a synthetic chalcone derivative with high larvicidal activity, herein, a bromochalcone derivative,
Pollyana P. Firmino, Jaqueline E. Queiroz, Lucas D. Dias, Patricia R. S. Wenceslau, Larissa M. de Souza, Ievgeniia Iermak, Wesley F. Vaz, Jean M. F. Custódio, Allen G. Oliver, Gilberto L. B. de Aquino, Hamilton B. Napolitano   +10 more
doaj   +1 more source

Consideraciones acerca de los contenidos y metodologías en los cursos de Química en la Educación Secundaria en Bogotá (Colombia) [PDF]

, 2009
La formulación de un nuevo currículo para los cursos de química general, impartidos en la Universidad Nacional de Colombia, nos llevó a indagar acerca de la química que se enseña en la secundaria y a analizar los contenidos en su coherencia y relación ...
Carriazo Baños, J., Farias Camero,, D., Molina Caballero, M.   +2 more
core   +1 more source

Solution for a local straight cosmic string in the braneworld gravity [PDF]

, 2015
In this work we deal with the spacetime shaped by a straight cosmic string, emerging from local gauge theories, in the braneworld gravity context. We search for physical consequences of string features due to the modified gravitational scenario encoded ...
Abdalla, M. C. B., Carlesso, P. F., da Silva, J. M. Hoff   +2 more
core   +3 more sources