High time-resolved measurements of aerosol SO42−, NO3−, NH4+ and their precursor gases HNO3, SO2, NH3 between 27 and 02 January/February and 19–01 August/September 2015 were carried out by applying AIM-IC at a rural site located on the coast of the Eastern Mediterranean, Erdemli, Turkey. The co...

The hygroscopicity of aerosols is dependent upon their chemical composition. When their chemical compositions are altered, the water content in aerosols often changes, which may further modify phase behaviour. However, the study of phase behaviour dependence on chemical reactions is still limite...

The extraction of tungsten from scheelite concentrate using phosphoric acid as chelating agent in nitric acid solutions was investigated. The effects of the leaching parameters, such as stirring speed, temperature, concentrations of HNO3 and H3PO4 as well as particle size were examined in order ...

The kinetics of nitric acid leaching of cerium was investigated for the oxidation roasted Baotou mixed rare earth concentrate. The effects of leaching temperature, HNO3 concentration, liquid–solid ratio (L/S) and stirring rate on rare earth extraction were studied. The XRD and SEM mapping analy...

A conjugated polymer consisting of alternating octyldodecyldiketopyrrolo[3,4-c]pyrrole (DPP) and diethoxynaphthalene (EN) units (PDPP-TENT) with thiophene (T) spacers, was synthesized (Mn 19 000), which showed a typical absorption of conjugated polymers (λmax = 720 nm, solid state). Based on th...

Cyclin-dependent kinase 5 (CDK5) is a serine/threonine kinase that plays a critical role in the early development of the nervous system. Deregulation of CDK5 is believed to contribute to the abnormal phosphorylation of various cellular substrates associated with neurodegenerative disorders such ...

Fluorodecarboxylation of aryloxydifluoroacetic acid (ArOCF2CO2H) and arylmercaptodifluoroacetic acid (ArSCF2CO2H) towards ArXCF3 (X = O, S) using silver (I) salts in the presence of Selectfluor in a biphasic system with trifluoroacetic acid additive is discussed.

The reaction of 1,4-dimethyl-1,4,7-triazacyclononane (L–Me2) with FeSO4 · 7H2O in aqueous ethanol gives, in the presence of sodium carboxylates, hydrogen peroxide, sodium hydroxide and KPF6, the dinuclear Fe(III)–Fe(III) complex cations [(L–Me2)2Fe2(O)(OOCR)2]2+ (R = H: 1, R = CH3: 2, R = C6...

The reaction of 1,4-dimethyl-1,4,7-triazacyclononane (L-Me2) with MnCl2 · 4H2O in acetonitrile gives, in the presence of sodium formate, hydrogen peroxide, triethylamine and KPF6, the dinuclear Mn(III)–Mn(IV) complex cation [(L-Me2)2Mn2(O)2(OOCH)]2+ (1) which crystallises as the hexafluorophos...

A novel quinoline derivative, 2-amino-4-(2,4,6-trinitrophenylamino)-quinoline-3-carbonitrile (ATQC) has been synthesized through condensation reaction between 2,4-diaminoquinoline-4-carbonitrile (DAQC) with picric acid (PA) in methanol. It has been proven by elemental analysis that the reaction ...

3-(3,4-Dihydroxyphenyl)-1-n-propylpyrrolidine hydrobromide was synthesized by a six-step reaction sequence and was evaluated, and compared with apomorphine, for central dopaminergic agonist activity. The compound produced behavioral and biochemical changes characteristic of central dopaminergic ...

The effect of NO on methane oxidation in O2/NO combustion atmosphere was investigated using reactive molecular dynamics (RMD) calculations. It has been observed that, the conversion of NO could accelerate the oxidation of CH4. To provide a detailed description for this phenomenon, the correspond...

By heating g-C3N4 powder in the hydrogen atmosphere, nitrogen defects were introduced into the framework of g-C3N4 where the nitrogen atoms in g-C3N4 were reacted and partially removed with hydrogen. The effects of nitrogen defects on the electronic structure, optical properties, generation of r...

2-(3,5-Dibromo-2-pyridylazo)-5-[N-ethyl-N-(3-sulfopropyl)amino]phenol reacts with iron(II) to form a water-soluble chelate, which gives two absorption maxima at 568 nm (ϵ = 88000 l mol−1 cm−1) and 748 nm (ϵ = 39000 l mol−1 cm−1). A spectrophotometric determination of 1–35 μg of iron is describ...

The ion-pair reversed-phase chromatography of some transition metal chelates with 2-(3,5-dibromo-2-pyridylazo)-5-[N-ethyl-N-(3-sulphopropyl)amino]phenol (3,5-diBr-PAESPAP) was studied. 3,5-DiBr-PAESPAP and its V(V), Cr(III), Fe(II), Co(III) and Ni(II) chelates were retained on and the copper (II...

Publisher SummaryThis chapter discusses the handling and characterization of synthetic retinoic acid analogs. The synthetic retinoids have structural similarity to the natural compounds in that they possess the characteristic lipophilic head group and polar terminus separated by a spacer group. ...

A series of potential anti-oxidant and anti-bacterial N′-arylmethylidene-2-(3,4-dimethyl-5,5-dioxidopyrazolo[4,3-c][1,2]benzothiazin-2(4H)-yl)acetohydrazides was synthesized in a facile way starting from commercially available saccharine. 3,4-Dimethyl-2,4-dihydropyrazolo[4,3-c][1,2]benzothiazin...

A series of new 2-(substitutedphenoxy)-N-[(aryl)methylidene]acetohydrazide analogues (8a-n) were synthesized in search of potential therapeutics for leishmaniasis. All the compounds were characterized by infrared (IR), nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry. The comp...

A library of 121 pseudopeptides was designed to develop reversible inhibitors of trypanosomal enzymes (cruzain from Trypanosoma cruzi and congopain from Trypanosoma congolense). The peptides share the framework: Cha-X1-X2-Pro (Cha=cyclohexyl-alanine, X1 and X2 were phenylalanyl analogs), based o...

Microbial reduction with baker's yeast or Aspergillus niger of methyl 4-chloro-4,4-difluoro-3-oxobutanoate 1 afforded the optically active methyl (−)-4-chloro-4,4-difluoro-3-hydroxybutanoate 2. When yeast reduction was carried out in the presence of allyl bromide the optically active methyl...