The formation of cobalt nanoclusters from polynuclear Co-alkyne species can be directed by multivalent calixarene ligands; thermochemical studies of Con-calixarenes reveal the influence of multivalency in prenucleation and postnuclear growth processes.

Thermochemical properties and microstructures of the composite of Al nanoparticles and NiO nanowires were characterized. The nanowires were synthesized using a hydrothermal method and were mixed with these nanoparticles by sonication. Electron microscopic images of these composites showed dispersed NiO nanowires decorated with Al nanoparticles. Thermal analysis suggests the influence of NiO mas...

This work has been undertaken in order to obtain data on thermodynamic properties of organic carbonates and to revise the group-additivity values necessary for predicting their standard enthalpies of formation and enthalpies of vaporization. The standard molar enthalpies of formation of dibenzyl carbonate, tert-butyl phenyl carbonate, and diphenyl carbonate were measured using combustion calori...

Today there is a worldwide interest in the use of biomass as an environmental friendly renewable energy source. The depletion of fossil oil reserves, constant uncertainties as far as price is concerned, unsecured supplies, and environmental pollution are among the many energy problems, when the use of fossil fuels are considered. Greenhouse effect and its consequences on climate change is one o...

The Na atmosphere of I0 requires a Na-S-O phase in the outer surface layers. Considering the various mechanisms for extraction of Na to the surface, the possible primary phases are Na20, Na2S•, and Na2SO4. However, regardless of the primary phases brought o the surface, the shallow cruslal recycling of material implied by the ongoing volcanism will tend to produce thermochemical equilibrium and...

Thermochemical treatment is a promising technique for biomass disposal and valorization. Recently, machine learning (ML) has been extensively used to predict yields, compositions, properties of biochar, bio-oil, syngas, aqueous phases produced by the thermochemical biomass. ML demonstrates great potential aid development processes. The present review aims 1) introduce schemes strategies as well...

This paper presents and tests a previously unrecognized mechanism for driving a replicating molecular system on the prebiotic earth. It is proposed that cell-free RNA replication in the primordial soup may have been driven by self-sustained oscillatory thermochemical reactions. To test this hypothesis, a well-characterized hydrogen peroxide oscillator was chosen as the driver and complementary ...

[1] The resolution operator R is a critical accompaniment to tomographic models of the mantle. R facilitates the comparison between conceptual three-dimensional velocity models and tomographic models because it can filter these theoretical models to the spatial resolution of the tomographic model. We compute R for the tomographic model S20RTS (Ritsema et al., 1999, 2004) and two companion model...

OBJECTIVE Alkali metal appears to be a promising tool in thermochemical ablation, but, it requires additional data on safety is required. The objective of this study was to explore the effectiveness of permeable oil-packed liquid alkali metal in the thermochemical ablation of tumors. METHODS Permeable oil-packed sodium-potassium (NaK) was prepared using ultrasonic mixing of different ratios o...