Results 31 to 40 of about 538 (207)

L'Ecologia humana i les Ciències socials

Documents d'Anàlisi Geogràfica, 1988
Aquest article estudia algunes qüestions conflictives en el terreny comú a l'economia, la geografia humana i l'ecologia humana, mitjançant exemples com l'exportació del guano peruà o l'anàlisi actual del flux d'energia a l'agricultura.
Joan Martínez Alier
doaj   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

Advanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez, Melanie Guillén‐Soler, Carlos Herreros‐Lucas, Alejandro López‐Moreno, José Manuel Vila‐Fungueiriño, Antonio Luis Llamas‐Saiz, Karol Strutyński, Manuel Melle‐Franco, María del Carmen Giménez‐López   +8 more
wiley   +1 more source

Contexto, estructura y analogías en la resolución de problemas por maestros de primaria en formación

Revista Electrónica de Investigación Educativa, 2015
En este trabajo se analiza la influencia de la estructura y contexto del problema, y la captación de la estructura y el uso de analogías en la resolución de problemas.
Joan Josep Solaz-Portolés, Alexandre Caballer Alonso   +1 more
doaj  

Electrically Readable Lateral Flow Assay Using Organic Transistors for Diagnostic Applications

Advanced Materials, EarlyView.
Electrolyte‐gated organic field‐effect transistors (EGOFETs) are integrated with lateral flow (LF) paper fluidics to create a reusable, portable, and low‐cost point‐of‐care (PoC) diagnostic test. The devices are validated for Human Immunoglobulin G detection, achieving high sensitivity (0.1 fm), selectivity, and reproducibility with rapid results in 20–
María Jesús Ortiz‐Aguayo, Carme Martínez‐Domingo, Diego Gutiérrez, Dean Kos, Marta Mas‐Torrent   +4 more
wiley   +1 more source

Gendered interplay between socioeconomic position, urbanization and excess weight: a multilevel analysis in Spain

Discover Public Health
In a global context of increasingly urban populations, inequities, and obesity prevalence, the evidence about the joint influence of socioeconomic position (SEP), gender, and urbanization is crucial for defining effective and equitable actions.
Natalia Tumas, Juan M. Pericàs, Santiago Rodríguez López, Francesc Belvis Costes, Eliana Martínez Herrera, Mariana Gutiérrez-Zamora Navarro, Lucinda Cash-Gibson, Joan Benach   +7 more
doaj   +1 more source

Anàlisi bibliomètrica del concepte de resiliència aplicat al desenvolupament regional

Documents d'Anàlisi Geogràfica, 2016
El concepte de resiliència és molt conegut a les enginyeries i a les ciències ecològiques, encara que, durant els darrers anys, s’utilitza cada vegada més en els estudis sobre economia regional.
Rudinei Kock Exterckoter, Antoni Francesc Tulla Pujol, Clécio Azevedo da Silva   +2 more
doaj   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source

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

Empirical evolution of credit risk over a decade in IBEX. 35 companies and its relationship with the qualification of its ratings

Intangible Capital, 2020
Object: The present work responds to two objectives. On the one hand, it describes the evolution of the main economic-financial indicators that influence credit risk (insolvency) for a sample of 10 Spanish companies listed on the IBEX 35.
Josep Patau
doaj   +1 more source

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source