SUMMARYThe authors outline a number of propositions to be considered in the management of severe chronic pain, and stress the importance of psychological aspects. Criteria to be met by drugs of choice are enumerated. From the outstanding results achieved in 84 out of 91 patients treated with the...

A high-performance liquid chromatographic method for the determination of low levels (less than 1 μg/ml) of the basic metabolite of bezitramide, 1-(4-piperidinyl)-1,3-dihydro-2H-benzimidazol-2-one, in human urine is described. Special attention is given to the separation from the basic metaboli...

The synthesis and characterization of two donor acceptor type conjugated polymers were investigated. Electrochemical properties were examined by cyclic voltammetry, spectroelectrochemistry and kinetic studies. The increase in the alkyl chain length attached to the fluorene unit was investigated ...

Three novel 2-{2-[4-(N,N-diethylamino)–2–hydroxyphenyl]–1H–benzo[d]imidazol–6–yl}–2H–naphtho [1,2-d] [1,2,3] fluorescent triazole derivatives were synthesized from 2-(5-amino-1H-benzimidazol-2-yl)-5-(N,N-diethylamino)phenol and amino substituted naphthylsulphonic acids. The absorption, e...

Harmful algal blooms have emerged as a worldwide issue. After concentrations of herbicides entering water, herbicides in water may pose ecological effects on them. The present study investigates the toxicity and environmental behavior of the herbicides, napropamide and acetochlor as enantiomers ...

Napropamide is a chiral acetamide herbicide commonly applied to control Echinochloa crus-galli in maize. The inhibition effect may be enantioselective for Echinochloa crus-galli and maize. It may also be affected by the potential allelopathy at field condition. To investigate this, we have exami...

2,5-Dimethyl-2′-hydroxy-9α-(3-methylbutyl)-6,7-benzomorphan, the 9β-analogue, and 9α-N-substituted (N-ethyl, propyl, butyl, pentyl, hexyl, phenylethyl, allyl, and cyclopropylmethyl) compounds were synthesized and evaluated biochemically and pharmacologically. The 9β N-methyl compound was fo...

Introduction2-Amino-6-[18F]fluoro-9-(4-hydroxy-3-hydroxy-methylbutyl) purine (6-[18F]FPCV) was prepared via a one-step nucleophilic substitution and evaluated as a novel probe for imaging the expression of herpes simplex virus type 1 thymidine kinase (HSV1-tk) reporter gene.

Gillisia limnaea strain DSM 15749 (=R-8282T, =LMG21470,=CIP108418) is a Gram-negative, strictly aerobic, psychrophilic, and non-photosynthetic bacterium that belongs to the family Flavobacteriaceae, which was isolated from a microbial mat in Lake Fryxell, Antarctica (Van Trappen et al., 2004). T...

The variation of the essential oils composition of 10 Tunisian Mentha x rotundifolia (L.) Huds. Populations and their antioxidant activity were assessed. Essential oils showed high percentages of oxygenated monoterpenes and sesquiterpene hydrocarbons. Rotundifolone, p-menthane-1,2,3-triol, β-ca...

In a previous study, we described a series of 28 aryl- and alkyl-substituted isothiouronium salts with antitumor activity and selectivity toward a leukemia cell line. Among the synthesized compounds, methyl (Z)-2-(isothioureidomethyl)-2-pentenoate hydrobromide (IS-MF08) showed conspicuous activi...

The crystal structure of 1-decylammonium hydrobromide was determined by X-ray crystallography. Lattice potential energy and molar volumes of the solid compound and its cation were obtained respectively. The ionic radius of the cation can be calculated from the corresponding effective volume of t...

In the present study, a novel microwave assisted method has been developed for sodium metaborate dihydrate (NaBO2·2H2O) synthesis. Anhydrous NaBO2, a derivative of borax, is an industrially and technologically important boron compound used as a raw material for the thermochemical production of ...

The structure of aqueous potassium metaborate solutions has been confirmed by X-ray scattering, Raman spectra and species distribution calculation. The optimized structure of B(OH)4− was obtained by density functional theory calculation. The hydration distance and hydration number of K+ in aqueo...

In the present work, precise radial distribution function (RDF) of cesium metaborate solutions with salt-water molar ratio of 1:25, 1:30 and 1:35 in large scattering vector range (3.91–214.26 nm−1) were obtained by X-ray scattering. Polyborate species were given using Newton iteration method wi...

In this study, anhydrous sodium metaborate (NaBO2), an industrial and technologically important boron compound, synthesis from concentrated tincal (CT) was carried out. Experiments with different temperature and time were performed in the parametric investigation to map out the reaction mechanis...

Sodium metaborate, a derivative of the borax compound, has a wide range of industrial applications. Recently, it is used as a source of boron in the production of sodium borohydride (NaBH4), which is a medium for hydrogen storage. In the present study, sodium metaborate tetrahydrate (SMT, NaB(OH...

Irreversibility negatively impacts the application of NaBH4 hydrolysis for hydrogen generation. Byproduct regeneration is key to solving this issue. In this work, the direct byproduct of aqueous NaBH4 hydrolysis, NaBO2·4H2O, is reacted with Mg2Si to regenerate NaBH4 via ball milling at room tem...

This study investigated an electrochemical method for recycling sodium metaborate (NaBO2) to sodium borohydride (NaBH4). Palladium (Pd), boron-doped diamond (BDD), gold (Au) and platinum (Pt) were used as electrodes. Cyclic voltammetry and chronoamperometry were used to recycle the NaBO2 either ...

Hydrogen can be obtained from hydrolysis of chemical hydrides, making this an interesting option for hydrogen storage. The gravimetric and volumetric energy densities attainable from hydrolysis of chemical hydrides depend in large measure on the amount of water required for the process. The stea...