Titanium tetrachloride mediated-dialkylation of 2,3-butanedione ketal 2 by 1,8-bis(trimethylsilyl)-2,6-octadiene (BISTRO) 1 led to 1-acetyl-1-methyl-2,5-divinylcyclopentane 4. This latter was methoxycarbonylated (NaH/dimethylcarbonate) and then alkylated with iodobenzocyclobutene (Cs2CO3/acetone...

New β-3-thienyl (8) and β-3-furyl derivatives of o-divinylbenzene (9) have been synthesised and their photochemical behaviour compared with 2-thienyl (7) and 2-furyl derivatives (2). Whereas the β-(2-heteroaryl) substituted o-divinylbenzenes (7 or 2) give only bicyclo[3.2.1]octadiene structur...

This work is a result of specific numerical experiments motivated by real cases of processing strong sparse seismic data, as an application of techniques based on the common-reflection-surface (CRS) stack technology aiming at estimating a smooth velocity depth distribution. The paper is primaril...

C3N4 nanosheets, which have high hardness and excellent thermal and chemical stability, were used in the electroless nickel-phosphorous (NiP) bath to deposit the NiP–C3N4 nanocomposite coatings (NCCs) on API X100 carbon steel (CS). The effect of plating time, pH, surfactant type and C3N4 concen...

Amorphous alloy NiP and its carbon composite catalysts NiP/C and NiP/reduced graphene oxide (RGO) were successfully one-pot synthesized using NaH2PO2 and NiSO4 as phosphorus and nickel source, respectively. The electrocatalysts were characterized with transmission electron microscope (TEM), X-ra...

As a new photocatalyst, the photocatalytic hydrogen production performance of strontium titanate (SrTiO3, STO) modified by amorphous NiP was studied. The main purpose was to study the effect of amorphous NiP on hydrogen generation of STO under ultraviolet (UV) light irradiation. In this paper, S...

From acidic NiP electroless bath, the co-deposition of TiNi nanoparticles in the NiP matrix to form novel NiP-TiNi nanocomposite coatings (NCCs) on top of API X100 carbon steel using several concentrations of TiNi nanoparticles (0.2, 0.4 and 0.8 g L−1 in the bath) is successfully achieved. The i...

New phosphorus heterocycles were synthesized using RCM reaction. They were prepared from unsymmetrical or polyfunctional insaturated precursor in 50 to 87% yields solving the problem of possible competitive side reactions. In parallel hydroxyphosphinate scaffolds represent a versatile starting m...

A procedure has been developed for the identification and quantitative determination of the pantothenates and panthenol by GLC. The pantothenate salts were converted to an ethyl ester by treatment with anhydrous ethanolic hydrogen chloride. The acetate derivatives of the pantothenic acid ethyl e...

d-Panthenol (provitamin B5) and salt of pantothenic acid are used in many cosmetic and pharmaceutical preparations for their skin emollient, regenerating and hair conditioning properties. The cathodic reduction of d-panthenol and salt of pantothenic acid had been studied by differential pulse vo...

Two methods are suggested for determination of panthenol. The first is colorimetric method where panthenol is subjected to alkaline hydrolysis; the resulting β-alanol is allowed to react with vanillin (Duquenois reagent) in presence of McIlvain buffer pH 7.5. The color developed is measured at ...

A method of panthenol-stabilized cerium dioxide nanoparticles synthesis was developed and their effect on the survival rate of human epidermoid cancer cells HEp-2 and diploid epithelial swine testicular cell line (ST-cells) under oxidative stress conditions induced by hydrogen peroxide introduct...

Skin wounds represent an enormous clinical and financial problem in equine. The present study evaluated the effect of Panthenol gel and Mebo ointment on metacarpal wounds healing in donkeys. This experimental study was carried out on eighteen adult donkeys divided into three groups each of six d...

Physicochemical properties and nature of the interactions in {D-panthenol + H2O} mixtures have been investigated measuring density and viscosity over the whole composition range in the temperature range from T = (293.15 to 313.15) K at atmospheric pressure (p = 1·105 Pa). From the theoretical a...

The interaction of EG, DEG and TEG with biologically active D-Panthenol, as the function of temperature has been investigated by the combination of acoustic and volumetric methods. Speeds of sound and densities of EG, DEG and TEG in (0.05, 0.10 and 0.15) mol·kg−1 in aqueous solutions of D-Panth...

Dimethyl oxalate (DMO) hydrogenation for ethylene glycol (EG) production is problematic due to environmental concerns and safety regulations. Therefore, development of improved methods for diethyl oxalate (DEO) hydrogenation based EG production is desirable. The objective of this research was to...

A novel amphiphilic block polymer poly(ethylene glycol)-poly(propylene carbonate)-poly(ethylene glycol) (PEG-PPC-PEG) was synthesized via the dicyclohexylcarbodiimide condensation reaction of double PEG-bis-amine and HOOC-PPC-COOH. The obtained copolymer was characterized by NMR to determine its...

Nanogels are promising carriers for drug delivery, especially when they degrade under conditions typical for cancer cells to release a drug. By using the precipitation polymerization we synthesized a biocompatible and degradable nanogel based on poly(ethylene glycol) methyl ether methacrylate (O...

Poly(ethylene glycol) is one of the most used stealth polymer in the field of polymer-based drug delivery. In spite of its excellent biocompatibility, high molecular poly(ethylene glycol) can be accumulated in the body, in contrast to low molar mass one. This is due to the non-degradability of p...

Glycol ethers, a class of widely used solvents in consumer products, are often considered exempt as volatile organic compounds based on their vapor pressure or boiling points by regulatory agencies. However, recent studies found that glycol ethers volatilize at ambient conditions nearly as rapid...