OBJECTIVE To examine the amount of change in color and color parameters of a composite resin (Filtek P60) polymerized by five different polymerization methods. METHODS A Teflon mold (6mm in diameter, 2mm in height) was used to prepare the composite resin discs (n=10). G1: Polymerization with inlay oven; G2: Polymerization with HQTH and autoclave; G3: Polymerization with LED and autoclave; G4:...

Electromagnetic fields may interfere with normal pacemaker function. Despite the introduction of modern pacemakers and bipolar lead systems, electromagnetic interference (EMI) still remains to be a concern during daily lives when patients are exposed to cellular phones, electronic security systems, and several household appliances. The aim of this study was to evaluate potential EMI risk of ind...

Editor, Reference to Microwave oven in microbiology laboratory, JPMA., 1992:42:2. In response to the queries by a microbiologist regarding the published paper we feel it would be appropriate to clarifr the facts. 1. Sterilization in microwaves works on a different principle than the conventional autoclave and sterilizadon is independent of temperature, just like the principle of sterilization b...

Nuts are nutritious and well-accepted by the general population, which has increased their consumption. This study analyzed sensorial characteristics of raw toasted pecan nuts. In pre-preparation, nuts were in an electric oven air fryer at 180 ºC for 5 10 min, stirring every 2.5 min. Sensory analysis was performed using affective acceptability test a 9-point hedonic scale, evaluating appearance...

A factor analysis model with nonnegative constraints (FA) was used to apportion the sources of PAHs found in sediments of Lake Calumet and surrounding wetlands in southeast Chicago. Source profiles and contributions, with uncertainties, are determined with no prior knowledge of sources. The model includes scaling and backscaling of data with average PAH concentrations without sample normalizati...

background: nowadays, there's a growing demand for the natural antioxidants due to the harmful effects of synthetic antioxidants. therefore, introduction of new natural antioxidants (especially those with plant origin) is very important. objective: the present study explores the chemical constitution and antioxidant activity of leaf extract of hyssopus officinalis l. and extract of aerial ...