in this paper, labo3 perovskite type catalyst formulations were prepared by sol-gel auto combustion method using citric acid as the fuel. activity of catalysts was tested in catalytic oxidation of toluene as a model of volatile organic compounds. lacoo3 perovskite formulation showed the highest activity among labo3 (fe, mn and co) perovskite catalysts. so, lacoo3 perovskite based catalyst was s...

Analysis of the volatile part of the metabolome (volatile organic compounds, VOC) present in the gas phase of excreted materials is a promising new screening tool for several cancers, including colorectal cancer (CRC). The VOC signature can reflect health status, like a 'fingerprint', and can be modified in several diseases. Technical difficulties still limit the widespread use of VOC analysis ...

Nowadays, many companies collect Voice of the Customer (VOC) in order to understand more about customers and the way they think about the companies or products/services. Many collection methods are being used to capture those valuable resources. This paper introduces “VOC 3.0”, a new Voice of the Customer (VOC) collection method through customer co-creation. This new method is aiming to create ...

We derive an analytical formula for the open-circuit voltage Voc of organic planar heterojunction solar cells under standard operating conditions. We find that the type of free carrier recombination at the interface between the donor and acceptor materials controls the slope of Voc vs incident light intensity. By using the same derivation, an equation for the resistance around Voc is obtained. ...

Identifying loss mechanisms and predicting device performance are key goals of device and process characterization. Photoconductance measurements allow the extraction of the Implied Voc and Suns Voc, which together can be used for process monitoring, for loss analysis and to identify the potential device performance in the absence of unwanted defects. In this paper, we measure the Implied Voc a...

OBJECTIVES The study objective was to assemble emission characteristics of the sources of the ambient volatile organic compounds (VOCs) and to elaborate methods of organizing them into the sources' chemical profiles. MATERIAL AND METHODS The UNMIX--sensor modeling method from the U.S. Environment Protection Agency (EPA)--was used to process the VOC concentration data acquired over the years 2...

The pathogenesis of sickle vaso-occlusive crisis (VOC) in sickle cell disease (SCD) patients involves the accumulation of rigid sickle cells and the stimulation of an ongoing inflammatory response, as well as the stress of infections. The immune response, via cytokine imbalances and deregulated T-cell subsets, also has been proposed to contribute to the development of VOC. In this study, a pane...

BACKGROUND The pathophysiologic mechanisms classically involved in sickle-cell nephropathy include endothelial dysfunction and vascular occlusion. Arguments demonstrating that ischemia-reperfusion injury-related kidney damage might coincide with vaso-occlusive crisis (VOC) are lacking. METHODS In this prospective study, we sought to determine whether tubular cells and glomerular permeability ...

Open-circuit voltage (VOC) in organic solar cells (OSCs) is currently still not well-understood. A generally acceptable view is that VOC is mainly determined by the energy level offset between donor and acceptor materials. Recently in ternary blend OSCs, VOC is found to be dependent on the blend composition. But contrary to expectation, this dependence is not a simple linear relationship, which...