A series of experiments was conducted on the decomposition of natural and chemically mixed chlorites to examine the stable hydrous phases in the MgO–FeO–Al2O3–SiO2–H2O (MFASH) system under 5–12 GPa and 700–1100 °C. The upper pressure and temperature limits of the stability region of chlor...

Interactions between aqueous fluids and rocks occur in a broad range of contexts ranging from hydrothermal alteration veins to regional metamorphism. Tracking these processes and understanding their reaction kinetics require a precise knowledge of the diffusion of water in rocks, and of isotope ...

The high reactivity of alkyl halides towards nucleophiles renders them as acutely toxic and mutagenic agents. Therefore, it is urgent to develop simple, sensitive, and selective methods for the detection of alkylating agents in a wide range of scenarios. Herein, we have designed and synthesized ...

The bicyclometalated iridium(III) complexes bearing 2,4-diphenylquinoline with fluorinated picolinates and methoxy picolinates as ancillary ligands were synthesized, and the effects of substituent groups at the ancillary ligands on the photophysical and electrochemiluminescent properties of the ...

Dehydrogenation of ethylene diamine bisborane (EDAB) is carried out in 1-ethyl-3-methylimidazolium hydrogen sulfate ([EMIM][HSO4]) and 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM][HSO4]) ionic liquids (ILs) at 40–100 °C and 4 × 10−2 mbar gauge pressure. Within 30 min, 3.90 and 3.92 cu...

Aimed at exploring the influence of solvent on crystallization thermodynamics of clopidogrel hydrogen sulfate (CHS), the solubility of CHS polymorphs (Form I and II) in 2-butanol + ethyl acetate mixtures was measured over temperatures from 283.15 to 313.15 K with a static equilibrium method. It ...

One bis-imidazolium salt 2,2′-di[2’’-(N-methyl-imidazoliumyl)ethoxyl]azobenzene hexafluorophosphate (LH2·(PF6)2) and its macrometallocycle binuclear N-heterocyclic carbene silver(I) complex [(LAg)2](PF6)2 were prepared and characterized. The structure of [(LAg)2](PF6)2 was determined by X-ra...

Cyclic voltammetry data were obtained for eight phenazines and phenazine-N-oxides, and eleven quinoxalines and quinoxaline-N-oxides: 1,6-phenazinediol-5,10-dioxide (iodinin), iodinin copper complex, 6-methoxy-1-phenazinol-5,10-dioxide (myxin), myxin copper complex, 1,6-dimethoxyphenazine-5,10-di...

The electrochemical behavior of 6-methoxy-1-phenazinol-5,10-dioxide is a complex function of pH. In acidic or basic media, two waves having a current ratio of ca. 2:1 were observed while at intermediate pH values, 3.0

Vapor pressures of fluorobenzene, chlorobenzene, 2-chloro-, 3-chloro-, and 4-chloro-methylbenzenes, 2-chloro-1,3-dimethylbenzene, 2,6-dichloro-1-methylbenzene were measured by the transpiration method. Molar standard enthalpies of vaporization at the reference temperature were calculated from te...

A series of 2-benzylamino-4(5)-(6-methylpyridin-2-yl)-5(4)-([1,2,4]triazolo[1,5-a]pyridin-6-yl)thiazoles 12a–ab, 13a, 13b, and 18a–d has been synthesized and evaluated for their ALK5 inhibitory activity in an enzyme assay and in a cell-based luciferase reporter assay. The N-(3-fluorobenzyl)-4-...

Purpose: To evaluate the effectivity of high-dose episcleral iridium-192 wires in the treatment of choroidal melanoma.Methods and Materials: In 1983, the Departments of Radiation Oncology and Ophthalmology at the Clínica Puerta de Hierro, Madrid, Spain, initiated a clinical study using removabl...

Iridium-192 sources supplied by the Institute for Nuclear Physics and Engineering have been used in Romanian radiotherapy clinics since 1980. The source assembly is sealed in a protective stainless steel sheath which satisfies the requirements of international standards. Since this sheath acts a...

Environmental hazards can be caused from radioactive waste after their disposal. It was therefore important that safety assessment methodologies be developed and established to study and estimate the possible hazards, and institute certain safety methodologies that lead and prevent the evolution...

We have developed a new method for producing 191Pt from an iridium target. Alkali fusion of iridium was successfully performed using a vertical beam irradiation method and a mixed target of Ir and Na2O2, which resulted in easy dissolution of the irradiated iridium target. A trace amount of PtⅣC...

The photoreactivity of 1,4-bis(β-pyridyl-2-vinyl)benzene and distyryl-pyrazine has been investigated using lifetime, Shpol'skii and carbon-13 nuclear magnetic resonance (13C NMR) techniques. Our study shows that long-lived emitting species exist in concentrated solutions indicating excited...

DC-electrical conductivity has been studied for fresh and partially photopolymerized 2,5-distyryl-pyrazine (DSP) single crystals of the α-modification. α-DSP crystals show semiconductivity with a positive activation energy for DC-electrical conduction, Ea = 0.86 eV. The specific conductivity, ...

2,5-Distyrylpyrazine (DSP) was vapor-deposited onto a surface of potassium chloride obtained by cleavage. The DSP films were composed of crystallites of two modifications, a photoactive α-form and a photostable γ-form, depending on the evaporation conditions. The former appeared as tabular and...

New fluorescent polyimides, having an electroluminescent (EL) active unit, 2,5-distyrylpyrazine (DSP), were synthesized by the poly-condensation of 2,5-bis(4-aminostyryl)pyrazine 4 with various tetracarboxylic dianhydrides 5. Intense photoluminescence originating from the DSP chromophore units w...

2,5-Distyrylpyrazine (DSP) was evaporated onto a cleavage face of KCl crystal in vacuo. The DSP film vacuum-evaporated on the KCl substrate without heat treatment was composed of randomly-oriented laminate and needle-like crystallites of α-form. When the substrate was heated at 150°C before va...