industrial activities lead to an increase in heavy metal burden in rivers. sediment and algae (spirogyra sp.) samples were collected from the shoor river to investigate their heavy metal concentrations. dry and ashed samples of algae and sediment were digested using concentrated nitric acid. heavy metals (as, fe, zn and cr) concentration measured using an icp-oes instrument (perkinelmer, usa). ...

BACKGROUND The Orofacial Esthetic Scale (OES) is an eight-item instrument to assess how patients perceive their dental and facial esthetics. In this cross-sectional study we investigated dimensionality, reliability, and validity of OES scores in the adult general population in Sweden. METHODS In a random sample of the adult Swedish population (response rate: 39%, N=1159 subjects, 58% female, ...

BACKGROUND The Oxford elbow score (OES) is a patient-rated, 12-item questionnaire that measures quality of life in relation to elbow disorders. This English questionnaire has been proven to be a reliable and valid instrument. Recently, the OES has been translated into Dutch and examined for its reliability, validity, and responsiveness in a group of Dutch patients with elbow pathology. The aim ...

Heavy metals widely enter into aquatic ecosystems, and cause various environmental problems due to bioaccumulation and biomagnification in food chains. The accumulation of heavy metals in bivalve tissues is affected by a number of intrinsic and extrinsic factors such as physiological conditions, growth, seasonal changes, pH, salinity, temperature, genera and age. The present study investigated ...

PURPOSE The aims of this study were to develop a Croatian version of the Orofacial Esthetic Scale (OES) and to test its psychometric properties. MATERIALS AND METHODS The English version of the OES was translated into Croatian (forward-backward method). The original 11-point scale as well as a 5-point scale (1 = unsatisfactory, 5 = excellent) were used. Convergent validity was tested on 126 s...

Melamine is an adulterant commonly found in milk, as it can increase the nitrogen content. Therefore, its apparent protein content, resulting in a better market price. Melamine adulteration can be fatal, as was highlighted in 2008 when six infants died due to melamine adulteration in milk powder and thousands were sickened in China. Consequently, there have been stricter regulations globally an...

The Agilent OneNeb nebulizer is a novel nebulizer design that offers superior performance compared to other commercially available concentric nebulizers used with ICP-OES instruments. This universal nebulizer provides improved sensitivity, greater tolerance to dissolved salts, and is inert so it is suitable for use with strong acids such as hydrofl uoric acid (HF) and most common organic solven...

The Vista instrument has a number of distinct advantages over similar ICP-OES systems. Firstly, the VistaChip is the only single Charge Coupled Device (CCD) that allows full coverage of the spectrum from 165-785nm, with a pixel processing speed of 1 MHz and exceptional anti-blooming properties. These features allow both trace level analytes and major analytes to be determined in the same measur...