BACKGROUND In patients with acute respiratory failure, gas exchange is impaired due to the accumulation of fluid in the lung airspaces. This life-threatening syndrome is treated with mechanical ventilation, which is adjusted to maintain gas exchange, but can be associated with the accumulation of carbon dioxide in the lung. Carbon dioxide (CO2) is a by-product of cellular energy utilization and...

Difunctionalizing carboxylation of alkynes with CO2 is a sustainable and important strategy to generate valuable acrylate derivatives from both readily available starting materials. Such protocols, however, always suffer the use excess metallic reagents transition metal residue. Herein, we report first thio-carboxylation thiophenols CO2, which visible-light-driven metal-free process. In contras...

This paper presents the results of sorption tests against selected gaseous pollutants SO2, CO2 and H2O on geopolymer materials obtained from high-calcium fly ash lignite power generation. In synthesis process, activation was carried out using KOH NaOH. It found that activating agent significantly affects porous structure samples. The experiments conducted for KOH-activated sample showed high SO...

A controlled manipulation of graphene edges and vacancies is desired for molecular separation, sensing electronics applications. Unfortunately, available etching methods always lead to vacancy nucleation making it challenging control etching. Herein, we report CO2-led down 2–3 Å per minute while completely avoiding nucleation. This makes CO2 a unique etchant decoupling pore expansion. We show t...

in this paper, we used quantum chemical approach to shed light on the catalytic mechanism of γ-carbonic anhydrase (γ-ca) to convert carbon dioxide to bicarbonate ion. density functional theory (dft) using b3lyp and ub3lyp functional and three split-valance including 6-31g*, 6-311g** and 6-311++g** basis sets were used to calculate the details of electronic structure and electronic energy of act...

The objective of this study was to determine the effects of 3 chemical agents used sequentially and electrical stimuli on parthenogenetic activation of in vitro matured bovine oocytes and comparison with a standard IVF protocol for embryo developmental rates. For this purpose, oocytes were matured in tissue culture medium-199 (TCM-199) at 39 °C and 5% of CO2 in humidified air. For IVF, matured ...

Copper is currently extensively studied because it provides promising electrodes for carbon dioxide electroreduction. The original combination, reported here, of a nanostructured porous dendritic Cu-based material, characterized by electron microcopy (SEM, TEM) and X-ray diffraction methods, and a water/ionic liquid mixture as the solvent, contributing to CO2 solubilization and activation, resu...

2014 Dielectric loss studies have been made in rubidium chloride crystals doped with Co2+ impurities. In this case the impurity ion consists of d-electrons in its outermost shell and is much smaller than the host cation. The peaks in the tan 03B4 vs. frequency isotherms follow an Arrhenius type relation. The values of activation energy for the I-V dipole and the pre-exponential factor have been...

Hierarchical nanoporous carbon (NPC) with great surface area and developed pore size distribution has been intently concerned. Herein, we report a facile method coupling template nanocasting and self-activation to fabricate nanoporous carbon with continuous micro, meso and macro pores, in which CaCO3 acted as template and activation reagent while the flour was the carbon precursor. Effects of m...