Results 91 to 100 of about 151,662 (178)

Quantifying Carboxylate Burial in Synthetic Hydrophobic Pockets in Water

open access: yesChemistryEurope, Volume 4, Issue 5, May 2026.
How “buried” is a buried ion? Double mutant cycles quantify the cost of placing a carboxylate within a deep aromatic calix[4]pyrrole pocket in water. The penalty is only +1.3 to +3.0 kcal·mol−1 because water penetrates through cracks and the portal, creating a wet, high‐dielectric microenvironment.
Esteban A. Valencia   +4 more
wiley   +1 more source

La extensión como herramienta para mejorar el aprendizaje de la química [PDF]

open access: yes, 2012
La experimentación en química, en el nivel secundario, está muy restringida debido al riesgo que implica el uso de muchos reactivos y a la falta de instrumentación electrónica empleada en laboratorios modernos de química.
Alvarez, María de las Mercedes   +5 more
core   +1 more source

MULTI-INSTRUMENTAL IDENTIFICATION OF ORPIMENT IN ARCHAEOLOGICAL MORTUARY CONTEXTS [PDF]

open access: yes, 2014
Indexación: Web of Science; Scielo.This paper reports on an unknown yellowish mineral compound found in an archaeological context from Chorrillos cemetery (Calama, Chile) dating to the Early Formative period (800 - 200 B.C.).
ARRIAZA, BERNARDO   +6 more
core   +1 more source

MGL‐Based Drug Conjugate: A Novel Glycan‐Targeting Strategy for Potential Precision Cancer Therapy

open access: yesChemistryEurope, Volume 4, Issue 5, May 2026.
An engineered macrophage galactose‐type lectin (MGL)‐based conjugate (mMGL‐vcMMAE), incorporating an exposed cysteine for site‐specific drug linkage, preserves stability, binding profile, and affinity of the native MGL carbohydrate recognition domain. It also selectively targets Tn/STn‐expressing cancer cells and shows recognition of colorectal cancer ...
Carlos D. L. Lima   +15 more
wiley   +1 more source

Una nueva familia de módulos estructurales para el reconocimiento molecular

open access: yesRevista de Química, 1998
Un conjunto de fenómenos gobernados por interacciones de naturaleza no covalente han dado lugar al concepto del Reconocimiento Molecular, fenómeno que es algo más que una simple asociación de dos entidades químicas.
Juana Robles Caycho
doaj  

Nucleobase Stacking Sustained by Pt−Pt Interactions

open access: yesChemistryEurope
This article reports the use of metal–metal interactions as a way to induce nucleobase stacking in a dinucleotide chain. We synthetized and study a series of C,N‐cyclometallated platinum(II) binuclear complexes derived from 6‐phenylpurine dinucleotide 1 ...
Dr. Carmen Lorenzo‐Aparicio   +4 more
doaj   +1 more source

Nuevos materiales para nuevas tecnologías electrónicas [PDF]

open access: yes, 1981
La Electrónica y la Química Orgánica, que han sido campos separados durante muchos años, se están acercando rápidamente en la actualidad. De un tiempo a esta parte han surgido bastantes áreas de interés común, en las que ambas ciencias aparecen como ...
Martín Pereda, José Antonio   +2 more
core   +1 more source

Magnetism for the Quantification of Sorption in Porous Materials From Liquid Media

open access: yesChemistry–Methods, Volume 6, Issue 5, May 2026.
This adsorption quantification technique uses external magnetic fields and a magnetic holder to measure mass changes during adsorption, making it universally applicable to any adsorbate. Unlike standard methods, it requires calibration only for the adsorbent rather than for every analyte.
Rubén Pérez‐Aguirre   +2 more
wiley   +1 more source

De las luciérnagas a la luz química [PDF]

open access: yes, 2013
Las luciérnagas nos permiten comprender el fenómeno de bioluminiscencia, es decir, la emisión de luz fría por organismos vivos. Es una reacción química que usan las luciérnagas masculinas para atraer a las femeninas y éstas responden también emitiendo ...
Adam, Claudia Guadalupe   +1 more
core   +1 more source

Monovalent mannose‐glycoconjugates of sulforaphane reprogram human dendritic cells via NFATc1 to induce immune tolerance under inflammatory conditions

open access: yesBritish Journal of Pharmacology, Volume 183, Issue 9, Page 1993-2008, May 2026.
Abstract Background and Purpose Immune tolerance prevents inflammation and autoimmunity, with dendritic cells (DCs) playing a key role. Reprogramming DCs towards a tolerogenic state represents a promising therapeutic strategy. Sulforaphane (SFN) has known immunomodulatory effects, but its clinical application is limited by poor stability and ...
María Elena Angarita‐Planchez   +6 more
wiley   +1 more source

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