Enthalpies of solution into water of formamide, N-methylformamide, N,N-dimethylformamide, acetamide, N-methylacetamide, N,N-dimethylacetamide, N-acetylglycinamide, N-acetyl-L-alaninamide, N-acetyl-L-leucinamide, N-acetyl-L-prolinamide, N-acetyl-N′-methylglycinamide, N-acetyl-N′-methyl-L-alanin...

Enthalpies of dilution of N-acetyl-l-prolinamide and equimolal solutions of this with N-acetylglycinamide, N-acetyl-l-alaninamide, N-acetyl-l-valinamide and N-acetyl-l-leucinamide have been determined at 298.15 K using a microcalorimetric procedure. The results obtained were used to calculate th...

A multi-component bicyclization strategy has been established, allowing a flexible and practical approach to 29 examples of skeletally diverse fused quinazolines from low-cost and readily accessible aldehydes with cycloketones and cyanoamides. The reaction is easy to perform simply by mixing thr...

Four series of novel thieno[3,2-d]pyrimidine and quinazoline derivatives containing N-acylhydrazone or semicarbazone were designed, synthesized, and evaluated for their biological activity. Of which compound 14 showed the most potent antitumor activities with IC50 values of 1.78 μM, 1.02 μM, 1...

The phase and rheological behavior of hexadecyl(trimethyl)azanium; 2-hydroxybenzoate (CTAS), and water as a function of surfactant concentration and temperature are investigated here. The critical micellization concentration (cmc1) and the concentration at which the structure of aggregates chang...

In this paper, a new fluoranthene-based unsymmetrical organic cyanine dye I and the corresponding cyanine dye II containing ethynyl unit for the purpose of comparison were designed and synthesized as sensitizers for the application in dye-sensitized solar cells (DSSCs). The absorption spectra, e...

This work studies a series of fluorescent materials, benzo[k]fluoranthene-based linear acenes, and uses these materials directly as the non-doped active layer to fabricate deep blue- to green-emissive organic light emitting diodes (OLEDs). Experimental results indicate that benzo[k]fluoranthene-...

Three, novel, fluoranthene-based dyes, 2-cyano-3-(5-(7,12-diphenylbenzo[k]fluoranthen-3-yl)thiophen-2-yl)acrylic acid, 2-(5-((5-(7,12-diphenylben-zo[k]fluoranthen-3-yl)thiophen-2-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid and 2-cyano-3-(4-(2-(7,12-diphenylbenzo[k]fluoranthen-3-yl)e...

Three di-n-alkylphosphinic acids (DPAs) with different chain lengths (1, 8, 16) were adopted as coadsorbents in dye-sensitized solar cells (DSCs) with organic sensitizer D149. The adsorption behavior of these coadsorbents on nanoporous TiO2 surface through POTi bond was confirmed by FT-IR spectr...

The molecular structure of the hydrogen bonded cyclic dimer of dimethylphosphinic acid (Me2P(O)OH)2 was determined by gas-phase electron diffraction (GED) at 433 K. The presence of monomer cannot be determined at this temperature within the error limits for the GED method. Structural analysis ...

Infrared spectra for both gaseous (4000-1000 cm−1) and polycrystalline (4000-400 cm−1) samples of dimethylphosphinic acid (CH3)2POOH (DMPA) at various temperatures are reported and discussed. The main attention is focused on the hydrogen bond vibrations. For the first time, the characteristic AB...

Amino-acid-based surfactants are promising collectors for the flotation of calcium-bearing minerals. In this study, N-hexadecanoylglycine (C16Gly) was used as a collector in the flotation system of fluorapatite (FA) and dolomite. Microflotation tests using single minerals implied that C16Gly cou...

Dolomite rarely occurs in modern marine environments, while it is ubiquitous in the geological record. This apparent contradiction made the formation mechanism of dolomite a long-standing problem haunting sedimentologists. However, dolomite is a constituent of many modern seep carbonates, provid...

For investigating the effectiveness of ash and dolomite on the migration of sulfur from coal pyrolysis volatiles, pyrolysis experiments of Xinzhou high-sulfur bitumite were executed in a self-designed reactor. The influences of heat carrier species, mass ratios of ash to coal, and ash particle s...

Dolomite is a cheap and robust catalyst used for biomass gasification, but its deactivation under relevant conditions of pilot-scale gasifiers has still been poorly understood. For this reason, the catalytic activity of fresh and used dolomites produced from an industrial air-blow fluidized bed ...

Dolomite is a very common carbonate mineral in ancient sediments, but is rarely found in modern environments. Because of the difficulties in precipitating dolomite in the laboratory at low temperatures, the controls on its formation are still debated after more than two centuries of research. Tw...

Among various geochemical and petrographic approaches, dolomite crystal morphology and dolostone fabric have been widely applied in the study of ancient dolostones. It is proposed that dolomite crystal morphologies and the rock fabric may reflect the formation temperature, and thus can be used t...

With the realization that the formation of low-temperature dolomite could involve the microbial activity, a new pathway to understand the origin and mechanism of dolomite is emerging. Although microbially mediated CaMg carbonates and dolomite occur in some aerobic and high-salinity conditions, l...

Today, consumers of refractory products have paid special attention to the use of dolomite-based products (bricks and castables). The reason of this attention can be attributed to the outstanding properties of dolomite-based products such as high refractoriness (more than 2000°C), the possibili...

To find out the origin of dolomite, the precipitation of primary dolomite, and the formation of pores in dolomite, petrologic and geochemical characteristics of typical samples from Sichuan and Tarim Basin were analyzed based on the previous understandings, and three aspects of results were achi...