This study aimed at synthesizing hydrogels to simulate opaque breast tissue (BT) and coloured cancerous tissues (CT) different densities of the designed phantom improve biopsy-related skills along with ultrasonography. Both are tear-resistant therefore, can be trained multiple times in order lower price eye-hand coordination users. For this purpose, self-healing (SH) polyacrylamide (PAAm) (SH h...

Natural products with a sulfated scaffold have emerged as antifouling agents with low or nontoxic effects to the environment. In this study 13 sulfated polyphenols were synthesized and tested for antifouling potential using the anti-settlement activity of mussel (Mytilus galloprovincialis) plantigrade post-larvae and bacterial growth inhibition towards four biofilm-forming bacterial strains. Re...

BACKGROUND Exposure to ammonium persulfate (AP) has been reported to be the main cause of occupational asthma in hairdressers. The aim of this study is to assess how long the asthmatic response to AP can be induced after dermal sensitization in a mouse model. METHODS BALB/c mice received dermal applications of AP or dimethylsulfoxide (DMSO) (control) on days 1 and 8. They then received a sing...

A series of poly(o-/m-toluidine-co-o-/m-chloroaniline) copolymers of different compositions were synthesized by an emulsion method with ammonium persulfate as the oxidant. The conductivity of the copolymers was two to five orders of magnitude higher than that of the homopolymers poly(o-toluidine) and poly(m-chloroaniline). Among the copolymers, the copolymer of o-toluidine and m-chloroaniline e...

We evaluated the incidence of childhood thyroid diseases and urinary iodine levels in Nagasaki, Japan and in Gomel, Belarus, which was greatly radio-contaminated by the Chernobyl accident, in order to obtain the comparative data of thyroid diseases between iodine-rich (Japan) and -deficient (Belarus) areas. In Nagasaki, the median level of urinary iodine, measured by ammonium persulfate digesti...

Stability and reusability are important characteristics of advanced catalysts for wastewater treatment. In this work, for the first time, sulfate radicals (SO4∙-) with a high oxidative potential (Eo = 2.5-3.1 V) were successfully activated from persulfate by a Fe78Si9B13 metallic glass. This alloy exhibited a superior surface stability and reusability while activating persulfate as indicated by...

BACKGROUND Cosmetics for bleaching, waving/relaxing and dyeing hair contain well-known allergens, leading to a substantial number of cases of allergic contact dermatitis. OBJECTIVE To compare the frequency of important contact allergens (i) between two distinct groups of exposed patients, and (ii) with previous surveillance data. METHODS On the basis of data collected by the Information Net...

Recent observations [1, 2] around the critical point showed that the critical exponents differed drastically for pure hydrogel systems depending on monomer concentration. To investigate hydrogels, the sol-gel phase transition during free radical crosslinking copolymerization the various amounts of acrylamide (AAm) and N-isopropylacrylamide (NIPA) mixtures was studied by using steady state fluor...