Metabolomic and gene networks approaches reveal the role of mitochondrial membrane proteins in response of human melanoma cells to THz radiation.

Terahertz (THz) radiation has gained attention due to technological advancements, but its biological effects remain unclear. We investigated the impact of 2.3 THz radiation on SK-MEL-28 cells using metabolomic and gene network analysis.

Effect of the Polyanion Structure on the Mechanism of Alcohol Oxidation with HO Catalyzed by Zr-Substituted Polyoxotungstates.

Zr-monosubstituted polyoxometalates (Zr-POMs) of the Lindqvist (BuN)[{WOZr(μ-OH)}] (), Keggin (BuN)[{PWOZr(μ-OH)}] (), and Wells-Dawson (BuN)KH[{PWOZr}(μ-OH)] () structures catalyze oxidation of alcohols using aqueous hydrogen peroxide as an oxidant. With 1 equiv of HO and 1 mol % of Zr-POM, selectivity toward aldehydes and ketones varied from good to excellent, depending on the alcohol nature. Catalytic activity and attainable substrate conversions strongly depended on the Zr-POM structure and most often decreased in the order > ≫ .

Tuning Reactivity of Zr-Substituted Keggin Phosphotungstate in Alkene Epoxidation through Balancing HO Activation Pathways: Unusual Effect of Base.

The Zr-monosubstituted Keggin-type dimeric phosphotungstate (BuN)[{PWOZr(μ-OH)(HO)}] () efficiently catalyzes epoxidation of C═C bonds in various kinds of alkenes, including terminal ones, with aqueous HO as oxidant. Less sterically hindered double bonds are preferably epoxidized despite their lower nucleophilicity. Basic additives (BuNOH) in the amount of 1 equiv per dimer suppress HO unproductive decomposition, increase substrate conversion, improve yield of heterolytic oxidation products and oxidant utilization efficiency, and also affect regioselectivity of epoxidation, enhancing oxygen transfer to sterically hindered electron-rich C═C bonds.

UiO-66 framework with an encapsulated spin probe: synthesis and exceptional sensitivity to mechanical pressure.

Probes sensitive to mechanical stress are in demand for the analysis of pressure distribution in materials, and the design of pressure sensors based on metal-organic frameworks (MOFs) is highly promising due to their structural tunability. We report a new pressure-sensing material, which is based on the UiO-66 framework with trace amounts of a spin probe (0.03 wt%) encapsulated in cavities.

Ash and Slag Waste Processing in Self-Shielded Atmospheric DC Arc Discharge Plasma.

In this paper, we report the experimental results obtained in slag waste processing by direct current arc discharge initiated in ambient air. The method does not employ vacuum and gas equipment, therefore increasing the energy efficiency of processing. Plasma processing of coal slag was performed at different arc exposure times: 5, 10, 15, 20, and 25 s.

Comparative analysis of the characteristics of carbonaceous material obtained via single-staged steam pyrolysis of waste tires.

The two-stage technology of porous carbonaceous material obtained via pyrolysis in inert medium with subsequent activation by steam is well known. While steam could be a suitable substance for pyrolysis as well, single-staged technology for waste tire recycling is yet to be developed. A comparative analysis of the characteristics of the carbonaceous materials obtained by the single-staged steam pyrolysis of waste tires was carried out, which could provide a theoretical background for the development of such technology.

Activation of Anthracite Combustion Using Pyrolysis Oil from Thermal Conversion of Waste Car Tires.

The ignition and combustion of anthracite modified by the addition of pyrolysis oil obtained during thermal processing of waste car tires (WCTs) had been studied. The mass fraction of WCT pyrolysis oil was varied in the range from 5 to 30 wt %. The additive was applied by the drop impregnation method.

Catalytic Performance of Zr-Based Metal-Organic Frameworks Zr-abtc and MIP-200 in Selective Oxidations with H O.

The catalytic performance of Zr-abtc and MIP-200 metal-organic frameworks consisting of 8-connected Zr clusters and tetratopic linkers was investigated in H O -based selective oxidations and compared with that of 12-coordinated UiO-66 and UiO-67. Zr-abtc demonstrated advantages in both substrate conversion and product selectivity for epoxidation of electron-deficient C=C bonds in α,β-unsaturated ketones. The significant predominance of 1,2-epoxide in carvone epoxidation, coupled with high sulfone selectivity in thioether oxidation, points to a nucleophilic oxidation mechanism over Zr-abtc.