NetCDF model output of the entire state of the surface layer, including simulated dFe dyes, of the circum-Antarctic

Dataset: Antarctic dFe model dyesFor a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/782848NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) OPP-1643652, NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) OPP-164361

Rheology, Morphology and Thermal Properties of a PLA/PHB/Clay Blend Nanocomposite: The Influence of Process Parameters

The effect of process parameters on the final properties of a poly-lactic acid (PLA) and polyhydroxybutyrate (PHB) polymer blend filled with nanoclays was evaluated. To this aim, the nanofilled blend was processed in a co-rotating twin screw extruder, considering three different screw profiles and different values of the screw rotation speed, and the thermal and thermo-mechanical properties of the so-obtained materials were investigated. Furthermore, XRD analyses, SEM observations and rheological characterization were exploited to infer the coupled effect of the process parameters and nanoclay presence on the microstructure of the filled blend. Preliminary thermodynamic calculations allowed predicting the preferential localization of the nanoclay in the interfacial region between the polymeric phases. The relaxation mechanism of the particles of the dispersed phase in nanofilled blend processed, by rheological measurements, is not fully completed due to an interaction between polymer ad filler in the interfacial region with a consequent modification of the blend morphology and, specifically, a development of an enhanced microstructure. Therefore, by varying the screw configuration, particularly the presence of backflow and distribution elements in the screw profile, high shear stresses are induced during the processing able to allow a better interaction between polymers and clay. This finding also occurs in the thermo-mechanical properties of material, as an improvement of storage modulus up to 20% in filled blend processed with a specific screw profile. Otherwise, the microstructure of filled blend processed with different screw speed is similar, according to the other characterizations where no remarkable alterations of materials were detected

The Ethics of Advocacy for the Mentally Ill: Philosophic and Ethnographic Considerations

In this Article, we critically address several philosophical underpinnings of ethical decision-making that impact persons with psychiatric disorders. We focus our attention, however, upon an admittedly limited target area. Thus, we canvass a select number of significant issues that pose unique problems for humanity. The purpose of these excursions is that of reflection. In brief, we will speculatively examine: (1) the relationship between human rights and the law; (2) the relationship between mental illness and the law (i.e. the rights of the mentally ill); (3) the ethics of involuntary confinement (i.e., taking away and giving back rights to the mentally ill); (4) the ethics of advocating for the rights of the mentally ill; and (5) the philosophical limits of ethical (mental health) advocacy

Microcalorimetry investigation on CNFs and metal supported CNFs for heterogeneous catalysis and electrocatalysis

Microcalorimetric methods, carried out under reaction conditions, provide insight into the interaction of adsorbates with the active surfaces, therefore, contributing to shade light on the nature of the active sites. In particular, the thermal effects during the chemisorption of a reactant over a solid under reaction condition provide information about the strength of the chemical bonds involved in the adsorption process and the transformations taking place as consequence of the adsorption process. In this work, microcalorimetry is applied to probe the active surface of CNF based materials for heterogeneously catalyzed and electro-catalyzed reaction. In comparative study on differently active materials, a critical analysis of the reactivity data can be delineated with respect to the surface processes occurring under good catalyst performance. Two systems have been studied: O2 chemisorption at reaction temperature on Pd nanoparticles/CNF based catalyst for the selective oxidation of alcohol to valuable compounds; CO2 chemisorption at reaction temperature on Fe/CNFs based electrocatalysts used for the reduction of CO2 to long chain hydrocarbon

Investigation of Epoxy-Acrylate Soybean Oil as A Bio-Enhancer for 3D Printing Application

In this study, a standard crude oil-based commercial resin containing urethane acrylate and acrylic mon-omers was combined with a biobased monomer, namely epoxy-acrylate soybean oil (EASO), at ratios varying from 10 to 50 wt.% and 3D printed, using a stereolithographic apparatus. The printed samples exhibited good quality and complete integration between the layers. Besides, the addition of increasing EASO loadings decreased the stiffness and mechanical strength of the samples (which exhibited mechanical properties similar to other commercially available photosensitive systems), while increasing their ductility and wettability. Therefore, the addition of EASO may significantly contribute to the exploitation of greener materials, which well matches today's circular economy concept

Impact of Chromophoric Dissolved Organic Matter on UV Inhibition of Primary Productivity in the Sea

A model was developed to assess the impact of chromophoric dissolved organic matter (CDOM) on phytoplankton production within the euphotic zone. The rate of depth-integrated daily gross primary productivity within the euphotic zone was evaluated as a function of date, latitude, CDONI absorption characteristics, chlorophyll a (chl a) concentration, vertical stratification, and phytoplankton sensitivity to UV radiation (UVR). Results demonstrated that primary production was enhanced in the upper 30 m of the water column by the presence of CDOM, where predicted increases in production due to the removal of damaging UVR more than offset its reduction resulting from the absorption of photosynthetically usable radiation. At greater depths, where little UVR remained, primary production was always reduced due to removal by CDOM of photosynthetically usable radiation. When CDOM was distributed homogeneously within the euphotic zone, the integral over z [(GPP)(sub ez)], was reduced under most bio-optical (i.e. solar zenith angle, and CDOM absorption, and ozone concentration) and photophysiological production at depth was greater than the enhancement of production at the surface