The e€ects of ultra-violet irradiation on the microstructure of an oxygen free polymer viz., acrylonitrile-butadiene-styrene and a polymer containing oxygen viz., polycarbonate have been investigated using positron annihilation lifetime measurement. Lifetime results in both polymers in the early stages of irradiation indicate that chain-scission leading to free radical formation is the predomin...

Ultraviolet (UV)/chlorine processes are emerging advanced oxidation (AOPs) for micropollutant abatement. When excessive chlorine (Cl/N mass ratio of >7.6) is applied to ammonia-containing water yield free residual the UV/free AOP, AOP becomes UV/breakpoint chlorination. This study investigated degradation by and radical yields from chlorination under various conditions using benzoic acid (BA) n...

The effectiveness of electrolyzed (EO) water for killing Campylobacter jejuni on poultry was evaluated. Complete inactivation of C. jejuni in pure culture occurred within 10 s after exposure to EO or chlorinated water, both of which contained 50 mg/l of residual chlorine. A strong bactericidal activity was also observed on the diluted EO water (containing 25 mg/l of residual chlorine) and the m...

as a disinfectant in surgical cases, an apology is perhaps necessary : for is not the action of chlorine as a deodorizer, disinfectant, and antiseptic, well known ? But in the present day, with carbolic, boracic, and salicylic acids, thymol, &c. &c., at our disposal, we are apt to neglect old tried friends for the popular favourites. In sloughing and foul-smelling wounds an aqueous solution of ...

In this paper, an approach for precise determination of the thermal conductivity novel lead-free perovskite thin films by 3ω method, realized with a field programmable analog array circuit, is presented. The objective work to study relation between photoelectric perovskites and stability solar cells, in which they are incorporated. It found that cells’ long-term under different exploitation con...

To determine resistance of highly pathogenic avian influenza (H5N1) virus to chlorination, we exposed allantoic fluid containing 2 virus strains to chlorinated buffer at pH 7 and 8, at 5 degrees C. Free chlorine concentrations typically used in drinking water treatment are sufficient to inactivate the virus by >3 orders of magnitude.

A facile and moderately functional-group-tolerant synthetic method for the preparation of 7,8-diaza[5]helicenes has been developed. It comprises of an oxidative ring-closing process of 1,1'-binaphthalene-2,2'-diamine (BINAM) derivatives with a chlorine-containing oxidant (t-BuOCl) in the presence of a base (2,6-lutidine). In addition the basic physicochemical properties of newly synthesized com...

[reaction: see text] A bromine-/chlorine-containing mass-tag encoding strategy for a small-molecule OBOC combinatorial library is reported. The resulting MALDI FTMS isotope pattern of each tag clearly defines the component building blocks of each "hit" bead in an 1890-member demonstration library screened on-bead for binding against streptavidin via both enzyme-linked colorimetric and Quantum D...

A force field is presented that has been optimized for chlorinated hyrocarbons containing isolated, vicinal, and geminal secondary chlorines. For carbon-chlorine stretch modes, 74 frequencies in 10 molecules are reproduced with an average error of 4.5 cm-‘. This force field can therefore serve to study these conformation-dependent modes in multiply-chlorinated hydrocarbons.

The electronic structure of Cu hexafluoroacetylacetonate, crystallized with a stable nitronyl nitrox-ide radical [Ovcharenko et al., Russ. Chem. Bull. 53, 2406 (2004)], is calculated from first principles within the density functional theory using the SIESTA method, in two magnetic configurations reflecting parallel or antiparallel setting of S = 1/2 spins of Cu(II) ions to those of organic rad...