Results 71 to 80 of about 6,265 (137)

Mechanistic Insight into H2S‐Induced Fluorescence Quenching in a Robust Metal–Organic Framework

Small, EarlyView.
An ultramicroporous Zn‐based metal‐organic framework, MFM‐520, enables reversible hydrogen sulfide adsorption and selective fluorescence sensing. Confinement of H2S within the pores perturbs ligand‐centered excited states through weak host‐guest interactions, enhancing non‐radiative decay pathways.
Valeria B. López‐Cervantes, Juan L. Obeso, J. Gabriel Flores, Ricardo A. Peralta, José Antonio de los Reyes, Jiangnan Li, Sihai Yang, Elodie Strupiechonski, Andrés De Luna Bugallo, Aída Gutiérrez‐Alejandre, Yoarhy A. Amador‐Sánchez, Diego Solis‐Ibarra, Ilich A. Ibarra   +12 more
wiley   +1 more source

Chemical Procedures for Paint Removal in Used Thermoplastics for Revalorization as a Raw Material in the Automotive Industry

Advances in Polymer Technology
The recycling of thermoplastic polymers from end-of-life vehicles is crucial to achieve a circular economy within the sector and prevent the accumulation of plastic waste by reusing it. However, several challenges in these processes present difficulties,
Carla Zambrano Membrives, Pablo Tamarit, Ana Inés Fernandez, Camila Barreneche   +3 more
doaj   +1 more source

Antimicrobial Residues in a Key Cerrado River: Distribution, Persistence, and Effects on Zebrafish Embryo‐Larval Development

Environmental Toxicology, EarlyView.
ABSTRACT The current study aimed to quantify the antimicrobials amoxicillin (AMX), cefazolin (CFZ), chloramphenicol (CHL), metronidazole (MTZ), and sulfamethoxazole (SX) in effluents and surface water of an important Cerrado river, calculate their half‐lives, and analyze their ecotoxicity following single and combined exposures.
Náthala Maria Simão, Igor Romeiro dos Santos, Jerônimo Raimundo de Oliveira Neto, Flávio Olimpio Sanches Neto, Felipe Cirqueira Dias, Jéssyca Moreira Morais, Lorranny Pereira de Assis Valadares, Naiara Raica Lopes de Oliveira, Mirelle Garcia Silva Bailão, Luiz Carlos da Cunha, Valter Henrique Carvalho‐Silva, Thiago Lopes Rocha, Elisa Flávia Luiz Cardoso Bailão   +12 more
wiley   +1 more source

ABP y TICs adaptados a los laboratorios de practicas de química física: su inserción e implementación.

Pixel-Bit, 2010
El trabajo que se presenta está basado en la experiencia docente llevada a cabo en los grupos de laboratorio de las asignaturas Termodinámica Química y Experimentación en Química Física, de primer y segundo curso de la Licenciatura en Química.
Antonio Sánchez Coronilla
doaj  

Biological invasions disrupt the relationship between size spectrum and trophic interactions in freshwater fish communities

Journal of Animal Ecology, EarlyView.
Our study shows that non‐native species alter the relationship between the size‐spectrum slope and the predator–prey mass ratio (PPMR) in freshwater fish communities by occupying distinct trophic niches. Abstract The size spectrum, which describes the relationship between abundance (or biomass) and body size, is an ataxic approach that can provide ...
Valentin Marin, Gaël Grenouillet, Ignasi Arranz, Julien Cucherousset   +3 more
wiley   +1 more source

Persistence of atoms in molecules: there is room beyond electron densities

IUCrJ
Evidence that the electronic structure of atoms persists in molecules to a much greater extent than has been usually admitted is presented. This is achieved by resorting to N-electron real-space descriptors instead of one- or at most two-particle ...
María Menéndez-Herrero, Ángel Martín Pendás   +1 more
doaj   +1 more source

Exploring natural sunscreens: UVB protection and antioxidant properties in gadusol‐rich fish roes extracts

Photochemistry and Photobiology, EarlyView.
Gadusol‐rich extracts provide effective UVB protection and antioxidant activity in HaCaT cells and C. elegans, highlighting their potential as natural photochemoprotective agents for pharmaceutical and cosmetic applications. It also demonstrates remarkable in vitro antioxidant capacity and thermal stability over time.
Rocío Isla Naveira, Gabriela Hollmann, José María Monserrat, Ana Paula S. Votto, Julie Medeiros da Silveira, Andressa Mai Matsumoto, Lais Zortéa, Andy Joel Taipe Huisa, Agueda E. Massa, M. Sandra Churio   +9 more
wiley   +1 more source

Photoprotective potential of gadusol against ultraviolet B radiation in melanocytes

Photochemistry and Photobiology, EarlyView.
Gadusol protects melanocytes from ultraviolet B (UVB)‐induced damage without cytotoxicity. Abstract The increasing incidence of skin cancer, including melanoma, combined with the need for ultraviolet (UV) filters that are safe for human health and marine ecosystems, is driving the search for new photoprotective agents.
Andressa Mai Matsumoto, Rocío Isla Naveira, Andy Joel Taipe Huisa, Marcelo Augusto Germani Marinho, Lais Zortéa, José María Monserrat, Agueda Elena Massa, María Sandra Churio, Ana Paula de Souza Votto   +8 more
wiley   +1 more source

Specialization: A multidimensional and integrative perspective

Ecosphere
Specialization remains as a controversial and ambiguous term in ecology. Although it has been usually measured using a dichotomic and simplified classification of specialists and generalists, its nature is by far more complex.
Clara Rodríguez‐Arribas, María Prieto, Gregorio Aragón, Jesús López‐Angulo, Adrián Escudero, Isabel Martínez   +5 more
doaj   +1 more source

Fluorescent Carbon Dots with Red Emission: A Selective Sensor for Fe(III) Ion Detection

Chemosensors
We present a procedure for the synthesis and purification of p-phenylenediamine-based carbon dots that can be used for the recognition of Fe(III) ions. Carbon dots have an approximately spherical shape with an average size of 10 nm and are composed of a ...
Ángela Fernández-Merino, Miriam Chávez, Guadalupe Sánchez-Obrero, Rafael Madueño, Manuel Blázquez, Rafael Del Caño, Teresa Pineda   +6 more
doaj   +1 more source