Iodine deficiency during childhood affects physical and mental development. or excess both can negatively impact thyroid function. We conducted this study to assess iodine nutrition function in children with insufficient urinary concentration. A community-based cross-sectional was among the selected schools of Udayapur district. Urinary concentration (UIC) measured 1012 school (6-14 years). Bas...

The production of conductive and organic devices from a 3D printer represents promising strategy for several areas. In particular, the synthesis polypyrrole-coated acrylonitrile butadiene styrene (ABS) composites can be considered an important step to produce supports printing. Herein, it is reported ABS samples through additive manufacturing process (3D printing) accordingly Fused Deposition M...

We report high-performance transparent copper grid electrodes on glass and plastic substrates that offer a higher Haacke figure-of-merit than conventional indium tin oxide are well-matched to the requirements for organic photovoltaics (OPVs). The electrode is fabricated using microcontact lithography with combination of molecular resist low toxicity etchant, namely, hexadecanethiol aqueous ammo...

a new potassium persulfate redox system has been investigated for the graft polymerization of vinyl monomers. in this study potassium persulfate system was used for initiation the polymerization. graft polymerization of acrylonitrile (an) onto starch (sta) was carried out in aqueous solution using potassium persulfate (i) redox system. it was found that the percentage of grafting and rate of gr...

A soluble poly (n-vinyl carbazole)-polypyrrole (PNVC-Ppy) copolymer was prepared through oxidative chemical polymerization wherein dodecyl benzene sulfonic acid (DBSA) was used as a dopant to facilitate polymer-organic solvent interaction and ammonium persulfate (APS) was used as an oxidant. Compared with undoped PNVC-Ppy, the DBSA-doped PNVC-Ppy copolymer showed higher solubility in some selec...

In this work, poly(acrylic acid-co-sodium acrylate) P(AA-SA) latex particles were prepared by inverse miniemulsion polymerization and used as a pH buffering agent for application. The polymerization was quickly initiated by a redox initiator (ammonium persulfate/sodium metabisulfite) at 0-5 degrees C. Thus the possibility of monomer dissolving in a solvent was reduced, which enhanced the degree...

The 2 techniques are based upon the formulation of lead ing ion and trailing ion initially enunciated by Ornstein (3) and lean heavily on the suggestions for buffer strategy made by Williams and Reisfeld (6). The leading ion is po tassium, the trailing ion is fl-alanine in the pH 3.8 system or 3-picoline, (3-methylpyridine) (pK 6.29) in the pH 6.0 system. Acetic acid and cacodylic acid (pK 6.4)...

A series of novel guar gum-g-poly(sodium acrylate-co-styrene)/muscovite (GG-g-P(NaA-co-St)/MVT) superabsorbent composites were prepared by free-radical grafting copolymerization of natural guar gum (GG), partially neutralized acrylic acid (NaA), styrene (St) and muscovite (MVT) using ammonium persulfate (APS) as the initiator and N,N-methylene-bis-acrylamide (MBA) as the crosslinker. Optical ab...

A 50-year-old healthy man was seen at the outpatient clinic after he had suffered two episodes of skin lesions on his left knee, right wrist, and left ring finger (Fig. 1a,b). A few hours after he had finished his work, these lesions appeared as burning, indurated redness, developing into tense blisters within 24 hr. The lesions healed without scar formation within 10 days. An occupational derm...