The synthesis of bicyclic phosphorus–nitrogen (PN) compounds containing the rigid bicyclo[3.3.1]nonan-9-one framework was attempted using the Mannich condensation reaction of four different phosphorinanone classes with amines and aldehydes. Three different isomers of 4-tert-butyl-2,6-di(methoxy...

Condensation of 1,1-bis(4-dimethylaminophenyl)ethylene with substituted ketones in acetic anhydride in the presence of perchloric acid yielded NIR polymethine dyes. The VIS-NIR spectra of the dyes were measured and interpreted by the semiempirical AM1 method. The influence of molecular structure...

The optical nonlinear refractive and absorptive parameters of the dye N,N′–Bis(2,5,-di-tert-butylphenyl)-3,4,9,10-perylenedicarboximide (DBPI) in 96% sulphuric acid have been obtained by a single closed-aperture (CA) Z-scan technique with picosecond pulses at the wavelength of 532 nm. Here a t...

The complex 2-(p-dimethylaminostyryl)pyridylmethyl bis[6,7-dihydro-5H-1,4-dithiepin-2,3-dithiolato] nickelate(III) ([DASPM][Ni(PDDT)2]) has been prepared and characterized by IR, UV-NIR and ESR. X-ray structure analysis reveals that the anions of the complex are packed in pairs and arranged as s...

The determination of inhibition mode is extremely important in the understanding of drug interactions and biological mechanisms. The data presented by Hjortness et al. in their recent papers [1,2] on the inhibition of various Protein Tyrosine Phosphatases addresses this issue in an exemplary man...

A series of imidazole flavonoids as new type of protein tyrosine phosphatase inhibitors were synthesized and characterized. Most of them gave potent protein phosphatase 1B (PTP1B) inhibitory activities. Especially, compound 11a could effectively inhibit PTP1B with an IC50 value of 0.63 μM accom...

The vinylogue of NAD, 3-pyridylacryloamide adenine dinucleotide, was prepared from NAD and 3-pyridylacryloamide through the snake venom NADase-catalyzed transglycosidation reaction. The analog, purified by ion-exchange chromatography, was obtained in a 55% yield. The cyanide adduct and reduced f...

BackgroundAlthough the evidence regarding the benefit of using ST waveform analysis of the fetal electrocardiogram is conflicting, ST waveform analysis is considered as adjunct to identify fetuses at risk for asphyxia in our center. Most randomized controlled trials and meta-analyses have not sh...

We have recently prepared a rabbit antibody (Ab) against a fungal branched β-(1→3)-d-glucan, grifolan (GRN) obtained from Grifola frondosa. In this study, we examined the reactivity of anti-GRN Ab against a pathogenic fungus, Candida albicans. Anti-GRN Ab was strongly reacted with acetone drie...

Grifolan is a branched (1,3)-β-glucan extracted from the fungus Grifola frondosa. Its physicochemical properties were investigated by studying the visible spectrum of Congo Red–glucan complexes and the rheological behavior. The analysis of the visible spectrum of Congo Red–glucan complexes in...

The use of distinctive and decorative road colored pavements intended for motorized traffic, cyclists and pedestrians have dramatically increased worldwide. They could take the form of overlay, when the colored material is placed on top of the pavement, or embedded, when the colored material is ...

A series of α-Fe2O3/palygorskite (α-Fe2O3/Pal) inorganic-inorganic composite pigments were prepared by a one-step hydrothermal process using six kinds of iron-rich natural palygorskite clays (Pal-c) with different structures, morphologies and compositions as starting materials. The effects of ...

An intense red food colorant found as a wholesale good for the European market and claimed as a mixture of beetroot red and paprika extract was investigated. The vibrant color intensity could not be readily explained because the measured amounts of dyes typical for beetroot red and paprika extra...

Staphylococcus saprophyticus is a gram-positive coagulase negative bacteria which shows clinical importance due to its capability of causing urinary tract infections (UTI), as well as its ability to persist in this environment. Little is known about how S. saprophyticus adapts to the pH shift th...

Miglyol 812®, a mixture of medium-chain triglycerides, has been identified as an oral vehicle that could improve the solubility and possibly the bioavailability of orally administered drugs during the non-clinical safety assessment. The toxicity of Miglyol was assessed in Göttingen® minipigs upo...

The experimental study of the thermal decomposition of methyl decanoate was performed in a jet-stirred reactor at temperatures ranging from 773 to 1123 K, at residence times between 1 and 4 s, at a pressure of 800 Torr (106.6 kPa) and at high dilution in helium (fuel inlet mole fraction of 0.021...

Biodiesel is typically a mixture of long chain fatty acid methyl esters for use in compression ignition engines. Improving biofuel engine performance requires understanding its fundamental combustion properties and the pathways of combustion. This research study presents new combustion data for ...

This work reports a systematic ab initio and chemical kinetic study of the rate constants for hydrogen atom abstraction reactions by hydroxyl radical (OH) on typical isomers of unsaturated C6 methyl esters at the CBS/QB3 level of theory. The high-pressure limit rate constants at different reacti...

A self-catalyzed solid-state growth method was developed for the synthesis of N, S codoped carbon nanotubes (NS-CNTs) in-situ encapsulating strings of metal sulfide nanocrystals. In this facile one-pot synthesis, the cross-linking reactions at the initial stage enable a well dispersion of metal ...

The sodium-sulfur (Na-S) battery is a well-known large-scale electrochemical storage option. The disadvantages of this particular battery technology result from its high operation temperature. Room temperature sodium-sulfur (RT Na-S) batteries would overcome these issues, but have issues of thei...