Quantum dots (QDs) offer an interesting alternative for traditional phosphors in on-chip light-emitting diode (LED) configurations. Earlier studies showed that the spectral efficiency of white LEDs with high color rendering index (CRI) values could be considerably improved by replacing red-emitting nitride narrowband QDs. However, red QDs these were cadmium-based, which is a restricted element ...

the present study was carried out for evaluation of calcoflour white staining (cws) as a rapid method for detection of pneumocystis carinii in respiratory specimens of rats as an animal model for human infection. a total of 35 spraque – dawley rats were divided into two groups. group1 (20 rats) received increasing doses of dexamethasone subcutaneously, and group 2(15 rats)as control group that ...

statement of problem: fixed orthodontic appliances can interfere with removing bacterial plaques from dental surfaces which can ultimately lead to white spot formation. purpose: the aim of this study was to evaluate the quantity of white spots and areas of decalcification following fixed orthodontic treatment. materials and methods: a total of 100 patients undergoing or scheduled for fixed orth...

Cryptocurrencies and decentralized finance have grown considerably since the publication of white paper on bitcoin in 2009. This article presents an overview cryptocurrencies, blockchain technology, their applications, explaining spirit enterprise how it compares with traditional operations.

BACKGROUND Stroke incidence is increased in Black individuals but the reasons for this are poorly understood. Exploring the differences in aetiological stroke subtypes, and the extent to which they are explained by conventional and novel risk factors, is an important step in elucidating the underlying mechanisms for this increased stroke risk. METHODS Between 1999 and 2010, 1200 black and 120...