The degradation of sodium p-cumenesulfonate (SCS) by electrochemical, photochemical, and photoelectrochemical methods in aqueous solution of NaClO4, NaCl, and NaClO has been studied. It was found that as a result of NaClO4 electroreduction and photodecomposition, the ions Cl- and ClO3- are formed. These ions undergo transformations into radicals, mainly Cl•, Cl2•-, ClO•-, ClO2•-, and ClO3•-, du...

Stimuli-responsive (such as voltage and/or light) fluorescence display systems have attracted particular attention in their promising fields of application. However, there are few examples of self-powered fluorescence display devices. Here we designed and fabricated a self-powered fluorescence display device based on a fast-charging/recharging battery. The specially designed battery was compose...

Fiber media filtration for combined sewer overflow (CSO) treatment was evaluated in this work. Pilot-scale experiments of CSO involve seven layers that form radial-type fiber filters. The filter characterized using analysis techniques and exhibited extremely high hydrophobicity negative charge. results obtained a plant at Tancheon Seoul revealed potential suspended solid, total organic carbon, ...

A micropropagação da oliveira é um método utilizado para se obter várias mudas sadias em menor tempo, comparada às técnicas tradicionais, a partir de explante. Dessa forma, o objetivo deste trabalho foi definir protocolo controle contaminação e oxidação explantes Oliveira (Olea europaea L.) cv Koroneiki. Assim foram realizados dois experimentos delineamento inteiramente casualizado. O primeiro ...

In an industrial seawater cooling system, the effects of three different antifouling treatments, viz. sodium hypochlorite (NaClO), aliphatic amines (Mexel®432) and UV radiation, on the characteristics of the fouling formed were evaluated. For this study a portable pilot plant, as a side-stream monitoring system and seawater cooling system, was employed. The pilot plant simulated a power plant s...

A novel polyacrylonitrile (PAN)-based ultrafiltration (UF) hollow-fiber membrane was newly synthesized for nanofiltration (NF) applications. This semi-fully NF characterized using a variety of analysis techniques. The exhibited higher negative charge and hydrophilicity lower surface roughness compared to the pristine UF membrane. Experiments study performance fouling were simulated under labora...

Electrogenerated chemiluminescence (ECL) can be obtained from an electrochemically oxidized highly oriented pyrolytic graphite electrode or a graphene oxide suspension in an aqueous solution containing 0.1 M NaClO(4), phosphate buffer (PBS) (pH = 7.0) and 13 mM tri-n-propylamine. Single ECL events from individual graphene oxide nanosheets can be observed. The observation of ECL in such systems ...

Abstract Operation of marine diesel engines causes significant emission sulphur and nitrogen oxides. It was noticed worldwide the regulations concerning harmful emissions were introduced. There several solutions elaborated; however, control for both SO x NO requires two distinctive processes realized in separated devices, which is problematic due to limited space on ship board high overall cost...

CD studies of the deoxyoligomer series d(pT)(n) and d(pA)(n) show increasing CD maxima for oligo (dT)'s with chain length variation from two to seven, while oligo (dA)'s exhibit a decreasing CD maximum. Concentrated solutions of NaClO(4) cause a decrease in the CD of longer oligo (dT)'s towards the CD of d(pT)(2) which is different from oligo dA's. Probably base-sugar interactions are important...