Centres de Recerca de Catalunya (CERCA): Enviaments recents
Ara mostrant els elements 1-20 de 9410
Charting the influence of deuterium sources in hydrogen isotope exchange using a cobalt(III) catalytic platform
Directed hydrogen isotope exchange strategies have become an essential tool for accessing isotopically labelled organic scaffolds and interrogating the mechanisms of transition metal-catalysed C–H activation. However, the ...
Solvent-free crosslinking of Hydroxypropyl cellulose via esterification: Towards green bioplastics
Resource depletion, waste management, and climate change drives innovation towards bioplastics. Among the renewable cellulose derivatives, hydroxypropyl cellulose (HPC) stands out for its biocompatibility, ease of processing, ...
Cu–ZnO Core–Shell Structures for CO2 Hydrogenation to Methanol: Insights into Reactivity and Deactivation under High-Pressure Conditions
Methanol is a valuable chemical energy carrier and C1 feedstock, with significant research efforts directed toward its production via CO2 hydrogenation. Here, we report a surfactant-free, non-aqueous synthesis of Cu–ZnO ...
Site-Selective Peptide and Protein Functionalization with Cyclopropenium Cations
In the realm of organic chemistry, carbocations play a pivotal role as highly reactive intermediates in the synthesis of complex molecules. While cyclase enzymes construct terpenoid natural products through carbocation ...
Domino Synthesis of Functionalized Cyclic Acetals From Organic Carbonates
We report a method for the base-mediated transformation of ether-tethered acrylic ester-based cyclic carbonates into functionalized cyclic acetals. The protocol builds on the use of hydroxyalkyl-substituted cyclic carbonates ...
Multi-modal contrastive learning for chemical structure elucidation with VibraCLIP
Identifying molecular structures from vibrational spectra is central to chemical analysis but remains challenging due to spectral ambiguity and the limitations of single-modality methods. While deep learning has advanced ...
Dual Catalytic Enantioconvergent Carbamoylation of Aziridines
Herein, we disclose an enantioconvergent carbamoylation of racemic aziridines enabled by a dual catalytic strategy. The method offers a new entry point to highly enantioenriched β-amino amides from simple precursors and ...
Reducing rotatable bonds in one substrate accelerates a bimolecular Diels–Alder reaction in a bis-calix[4]pyrrole cage
We report the quantitative self-assembly of an endohedrally functionalized octa-imine cage from two calix[4]pyrrole scaffolds via dynamic covalent chemistry. The cavity combines size and shape complementarity with enzyme-like ...
Insect biological control: a global perspective
The intentional use of biological control agents to manage arthropod pests dates back to as early as 304 AD, when Chinese farmers used weaver ants to manage citrus pests. Over time, biological control has evolved into ...
Differentiation of two Bathyplectes species, B. anurus and B. curculionis, parasitoids of the Alfalfa weevil (Hypera postica) in Spain
The alfalfa weevil Hypera postica Gyllenhal (Coleoptera: Curculionidae) is one of the most destructive alfalfa pests in the world, resulting in substantial economic losses. However, the amount of damage can be reduced by ...
Linking root length and surface area to yield: variety-specific root plasticity in winter wheat across contrasting European environments
Understanding the relationship of root traits and crop performance under varying environmental conditions facilitates the exploitation of root characteristics in breeding and variety testing to maintain crop yields under ...
Base and upper temperature thresholds to support the calculation of growing degree days aiming at their use with the FAO56rev crop coefficients curve: A review
Growing Degree Days (GDD) are a fundamental tool for supporting crop and water management, estimating crop development and growth and, in particular, defining the crop coefficient curve, thus computing crop evapotranspiration ...
Use of a Digital Twin for Water Efficient Management in a Processing Tomato Commercial Farm
The increasing pressure on water resources caused by agricultural intensification, the rising food demand and climate change requires new irrigation strategies that improve the sustainability and efficiency of agricultural ...
Influenza Aviar: características de la enfermedad, situación actual y perspectivas futuras
La influenza aviar (InAv) o "gripe aviar" es una enfermedad viral aguda que afecta mayoritariamente las aves domesticas y esta causada por virus de influenza tipo A. A lo largo de las ultimas decadas, el numero y extension ...
Spectroscopic Analysis of Proximal Leaves as a Method for Studying Nectarine Ripening
Traditional methods for fruit quality assessment are labor-intensive, destructive, and result in the loss of marketable produce. Spectroscopy, especially near-infrared (NIR) and mid-infrared (MIR), has helped in the ...
Carbonate anions and radicals induce interfacial water ordering in CO2 electroreduction on gold
Interfacial hydration layers critically determine energy and chemical conversion processes, notably influencing the kinetics of electrocatalytic reactions. Fundamental mechanisms of reactions such as CO2 electroreduction ...
Identification of Gambierdiscus species from La Réunion and evaluation of toxicity and toxin profile
Five different species of Gambierdiscus have been identified in La Réunion (G. belizeanus, G. balechii, G. pacificus, G. silvae and G. ribotype 2) by morphological observations in Scanning Electron Microscopy (SEM) and ...
Bivariate and multivariate analyses of allometric growth in larvae of farmed meagre (Argyrosomus regius): an integrated approach to define growth stages and ontogenetic transitions
Fish larval rearing represents a critical stage due to the extreme fragility of larvae, small size, and specific nutritional needs during rapid growth. Successful larviculture requires understanding ontogenetic changes to ...
Efficacy of a Novel PCV2d and Mycoplasma hyopneumoniae Combined Vaccine in Piglets with High and Low Levels of PCV2 Maternally Derived Antibodies at Vaccination
Background/Objectives: Maternally derived antibody (MDA) levels of porcine circovirus 2 (PCV2) may eventually interfere with humoral response and vaccination efficacy. This study aimed to evaluate the efficacy of a ...
