Search results for "DF"

Resource or waste? A perspective of plastics degradation in soil with a focus on end-of-life options.

2018

‘Capable-of-being-shaped’ synthetic compounds are prevailing today over horn, bone, leather, wood, stone, metal, glass, or ceramic in products that were previously left to natural materials. Plastic is, in fact, economical, simple, adaptable, and waterproof. Also, it is durable and resilient to natural degradation (although microbial species capable of degrading plastics do exist). In becoming a waste, plastic accumulation adversely affects ecosystems. The majority of plastic debris pollutes waters, accumulating in oceans. And, the behaviour and the quantity of plastic, which has become waste, are rather well documented in the water, in fact. This review collects existing information on pla…

Préparation et spéciation d’oxo-clusters de métaux du bloc p

2022

The main subject of this thesis is the use of Pair Distribution Function (PDF) analysis for solution phase speciation during metal-cluster growth. The PDF method allows the extraction of structural information from a sample in the form of an atom-atom distance distribution via Fourier transform of synchrotron X-ray scattering data. The growth mechanisms of two solution-based systems are analysed in this thesis. Precursor materials are synthesized through a mechanochemical method that was developed and shown to be able to access a wide range of related systems.Mechanochemical routes of synthesizing bismuth Active Pharmaceutical Ingredients (APIs) were investigated and optimised. Samples were…

Annotations to the Devonian Correlation Table, R 350–356 di-ds 06: Spain

2006

Annotations to Devonian Correlation Table, R 357–360 di-ds 06: Spanish Central Pyrenees, southern part

2006

Geomorphological west-east-section through the north chilean andes near antofagasta

2006

The extremely arid western slope of the Andes near Antofagasta is an area of young tectonic movements on the one hand, but of very low erosion rates on the other. Therefore the relief is characterized by very old erosional forms, but fresh and clearly visible tectonic forms. This is quite evident from the following characteristics of a west-east-section from the Coastal Cordillera to the High Cordillera: 1. The great height and steepness of the western escarpment of the Coastal Cordillera, devoid of deep valleys. 2. The preservation of the miocene and pliocene caliche deposits with highly soluble nitrates in the eastern part of the Coastal Cordillera and of the landforms covered by them. 3.…

Structure Sensitivity of 2‐Methyl--butyn-2-ol Hydrogenation on Pd: Computational and Experimental Modeling

2014

Growth of Palladium Clusters on a Boron Nitride Nanotube Support

2015

We demonstrated that the migration process of a single palladium atom on the BNNT is not highly energy demanding and can be represented as a hopping mechanism between boron and nitrogen. A model was finally found for the interpretation of the growth energetics, showing that the process is generally favoured increasing the cluster size.

Mindful Attention Awareness in Spanish Palliative Care Professionals

2017

Abstract. Mindfulness is conceived as a state in which the individual pays full attention to everything that is happening around him or her. The Mindful Attention Awareness Scale (MAAS) is the most popular instrument for assessing mindfulness. Studies on its structure have shown some conflicting results. This study aims to offer new evidence on the dimensionality and reliability of the MAAS, handling both SEM and IRT procedures, in palliative professionals. The sample was composed of 385 professionals from a national online survey. First, two Confirmatory Factor Analyses (CFAs) were specified, estimated, and tested, with one- and two-factor structures, respectively. Second, the Graded Resp…

Neuropharmacology of vision in goldfish: A review

2009

AbstractThe goldfish is one of the few animals exceptionally well analyzed in behavioral experiments and also in electrophysiological and neuroanatomical investigations of the retina. To get insight into the functional organization of the retina we studied color vision, motion detection and temporal resolution before and after intra-ocular injection of neuropharmaca with known effects on retinal neurons. Bicuculline, strychnine, curare, atropine, and dopamine D1- and D2-receptor antagonists were used. The results reviewed here indicate separate and parallel processing of L-cone contribution to different visual functions, and the influence of several neurotransmitters (dopamine, acetylcholin…

Mindfulness Training for Children with ADHD and Their Parents: A Randomized Control Trial

2021

Objective: The aim of this randomized control trial is to analyze the efficacy of a Mindfulness-based program (MYmind) in improving ADHD symptoms, associated problems, executive functions, and family functioning. Method: The sample was composed of 30 children (9–14 years old) with an ADHD diagnosis and their parents. Participants were randomized into two groups, the MYmind group ( n = 15) and a wait-list group ( n = 15). Participants were assessed in three time periods: pre-, post-intervention, and at 6-month follow-up. Results: After the program, parents reported a decrease in parenting stress and improvements in parenting styles. Six months after the intervention, parents reported signifi…