Our recent theoretical analysis of the bromate reduction from acidic media at rotating disk electrode (RDE) under steady-state conditions gave astonishing predictions for the current at the plateau of the voltammogram (called “the maximal current”, jmax) which deviated cardinally from those fo...

Theory of the convective-diffusion transport for the steady-state electroreduction of bromate-anion at rotating disk electrode has been developed for the first time for the compositions of the bulk solution where the bromate concentration is much higher than the proton one. Because of the non-el...

Without a catalyst ketones and aldehydes were reacted in THF with ammonia borane (AB) to proceed hydroboration forming alkyl borates. Mechanistic studies revealed that dissociation of ammonia from AB occurred before the hydroboration step. When methanol was used as the solvent, metal free methan...

A sensitive and rapid colorimetric method for the in vitro determination of phagocytic activity and antibody-dependent cell-mediated cytotoxicity (ADCC) is described. The assay uses red blood cells (RBC) as target cells and relies on the specific oxidation of 2,7-diaminofluorene (DAF) by the pse...

Sensitive and rapid assays, colorimetry and histochemistry, for hemoglobin in erythroid cells are established. The assays are based on pseudoperoxidase activity of hemoglobin using 2,7-diaminofluorene as a hydrogen donor for the peroxidase, instead of benzidine which is widely used for the detec...

A chromium speciation and preconcentration method was developed for graphite furnace atomic absorption spectrometry (GFAAS). This method was based on a continuous liquid-liquid extraction technique. For the separation and enrichment of the chromium species, an ion-pair forming quaternary ammoniu...

The sulfuric acid leaching process is widely considered to be a cleaner technology to prepare chromium salt from natural chromite as no Cr(VI)-bearing wastes are generated or discharged. However, some insoluble anhydrous chromium sulfate could precipitate causing a serious chromium resource loss...

The decolourization of dye wastewater by persulfate was studied using acid chrome blue K as a model dye wastewater. Effects of several parameters, such as dose of oxidant, ionic strength, pH, temperature and UV irradiation, were investigated in detail. The results showed that the decolourization...

Due to the serious nitrate pollution in Northeast China, the in-stream nitrate and its isotopic composition (δ15N-NO3 and δ18O-NO3) were analyzed to explore the seasonal nitrate sources and its transformation processes combining with chemical indicators in the Haicheng River during the spring,...

Z-Scheme Ag/TiO2/AgMIL-101(Cr) was prepared by co-doping Ag and TiO2 with AgMIL-101(Cr) via solvothermal synthesis combined with sol-gel method. Ag and anatase TiO2 nanoparticles were well dispersed on the surface of AgMIL-101(Cr) with octahedral structure. 5 wt% Ag and 50% TiO2 co-doping on the...

The photooxidative stability of an aromatic segmented poly(urethane-urea) (PUU) elastomer, stabilised with a range of carbon black fillers, was assessed after very low UVA doses as a means to identify components that are highly susceptible to UV degradation, and suggest better design of such mat...

Nearly 1.3 billion tons of food are discarded annually in the production process. In this study, a novel slow-release nitrogen fertilizer with water absorbency was developed using leftover rice and crosslinking methods. Urea was incorporated as the nitrogen source in a leftover rice-g-poly(acryl...

Model compounds of unsymmetrical bis-ureas have been designed and synthesised to investigate and further understand the formation of supramolecular polymer arrays. Association constants (

The homocoupling reaction between the conjugated n-(2-chloroethenyl)pyridine; n, 2-, 3- and 4- (or quinoline; n, 2- and 4-) mediated by zero-valent nickel complexes at room temperature affords to the corresponding 1,4-diaryl-1,3-butadiene, always as the 1E,3E stereoisomer. The yield in 1,4-diary...

(1-Chloroethenyl)oxirane (CEO) is a metabolite of β-chloroprene (2-chloro-1,3-butadiene, CD). The purpose of this study was to evaluate the in vitro mutagenic and clastogenic (chromosome breaking) potential of CEO. For comparative purposes, the study also included an evaluation of the racemic c...

Chloroprene (2-chloro-1,3-butadiene, CAS 126-99-8, CP) is a colorless volatile liquid used in manufacture of polychloroprene, a synthetic rubber polymer. National Toxicology Program inhalation studies of CP in rats and mice gave clear evidence of carcinogenic activity. CP is metabolized by CYP2E...

A series of aryl 7-chloroquinolinyl hydrazone derivatives (3a-u) have been synthesized in 55–76% yield using simple reaction condition. The synthesized compounds were evaluated for their anti-inflammatory activities based on their ability to inhibit pro-inflammatory cytokine secretion from the ...

Hydrazone and their derivatives are a series of highly active molecules, which are widely used as lead compounds for the research and development of new anti-cancer drugs. In this study, 20 compounds were synthesized, based on this scaffold and their in vitro cytotoxicity against 6 cancer cell l...

A group of N-benzylpiperidine-3/4-carbohydrazide-hydrazones were designed, synthesized and evaluated for acetylcholinesterase (AChE), butyrylcholinesterase (BuChE) activities, Aβ42 self-aggregation inhibitory potentials, and antioxidant capacities, in vitro. All of the compounds displayed eeACh...

Spain is the second largest European producer of oranges and the fourth in the world. Moreover, in Andalusia, the land dedicated to organic farming of oranges has doubled in the last decade (2006–2016). The great challenge in the organic farming sector is to find a reliable analytical technique...