64 species of Phoridae, in 6 genera, are reported from the Kola Peninsula, north of the Arctic Circle. The new species Megaselia elenae and Megaselia kozlovi are described. 33 species of Megaselia, only known from females, are given code numbers. Keys to the species of all the females of Megaselia and Phora are provided; and also a key to the males European Megaselia species with a notopleural ...

Abstract A novel nanocomposite consisting of 0.3 cobalt lanthanum nanoferrite/0.7 perovskite–hematite nanoparticles (CoLa/LaH) and (LaH) was synthesized using a simple method. The crystallite size determined by the X-ray diffraction (XRD) pattern, particle atomic force microscopy (AFM) to demonstrate that nano-samples had sizes within nanoscale range. Fourier transform infrared analysis utilize...

Caffeine is the most widely used psychoactive stimulant with prevalent use across all age groups. It is a naturally occurring substance found in the coffee bean, tea leaf, the kola nut, cocoa bean. Recently there has been an increase in energy drink consumption leading to caffeine abuse, with aggressive marketing and poor awareness on the consequences of high caffeine use. With caffeine consump...

The aim of this study was to evaluate the discoloration effects of water, cola-based soft drink, coffee, and wine on resin composites used in restorative dentistry and the possibility of removing the stain with chair side manual polishing. The A2 shade of three materials was tested. Disc specimens were prepared. A spectrophotometer was used to measure the baseline CIE-Lab color parameters of ea...

Freeze dried coffee, filter coffee, tea and cola were analysed by Curie-point pyrolysis mass spectrometry (PyMS). Cluster analysis showed, perhaps not surprisingly, that the discrimination between coffee, tea and cola was very easy. However, cluster analysis also indicated that there was a secondary difference between these beverages which could be attributed to whether they were caffeine-conta...

OBJECTIVE To investigate the effect of beverages' temperature on the surface roughness, hardness, and color stability of a composite resin. MATERIALS AND METHODS Fifty specimens of the Filtek Z250 composite (3M ESPE, Dental Products, St.Paul, MN, USA) were prepared and initial roughness, microhardness, and color were measured. Then the specimens were randomly divided into five groups of 10 sp...

Address correspondence to: Dr. Mark B. Pochapin, NYU Langone Medical Center, 522 First Avenue, Suite 901B, New York, NY 10016; Tel: 646-501-6760; Fax: 646-501-6767; E-mail: [email protected] A bezoar is an indigestible mass of material—such as hair, food, seeds, or another ingested substance—found in the gastrointestinal tract.1 A phytobezoar, the most common type of bezoar, is composed o...

In this in vitro study, the effects of a Cola drink, and fresh fruit juice (citrus) on the surface roughness on flowable composite and resin-modified glass ionomer cement (RMGIC) each was evaluated and compared. Using a brass mold 70 pellets each of flowable composite (Filtek™ Flow) and RMGIC tricure restorative material were prepared according to the manufacturer's instructions. Two groups (gr...

The durability and patient acceptability of prosthesis can be gauged by the capacity visible light curing lab composite resins to maintain color stability through time use. Consequently, this study’s goal was assess three layering materials, incisal, dentin, gingiva SR Nexco composite, with exposure coffee, Coca-Cola, turmeric solution using a spectrophotometer. A total 60 specimens (10 × 2 mm)...