aim: the purpose of this study was to compare the difference in the output intensity of light emitting diode (led) light cure (lc) devices with and without a protective sleeve and its clinical significance.  materials and methods: the output intensity of 152 lc units in dental offices across the state of odisha were examined. the collection of related information included an average number of e...

One of the most promising technique for temperature measurement is the Laser Induced Fluorescence (LIF) which utilize basic concept of optical, non-intrusive measurements and give possibility to visualize the temperature distribution in the whole two-dimensional plane at once. A major problem of a LIF is it still unsatisfactory accuracy for temperature gradient and heat transfer measurement. Th...

The brain of Drosophila melanogaster contains approximately 150 circadian neurons [1] functionally divided into morning and evening cells that control peaks in daily behavioral activity at dawn and dusk, respectively [2, 3]. The PIGMENT DISPERSING-FACTOR (PDF)-positive small ventral lateral neurons (sLN(v)s) promote morning behavior, whereas the PDF-negative sLN(v) and the dorsal lateral neuron...

In the current work, the effect of surface morphology on light emission property and absorption behavior of quasi-columnar macro-porous silicon (PS) was investigated. PS structures with different morphology were synthesized using photo-electrochemical etching method by applying different etching current densities. SEM micrographs showed that empty macro-pores size and porosity of PS layers were...

the reaction of hydrogen peroxide and  pheny -9-acridinecarboxylate in the presence of rhodamin b as a fluorophore leads to the emission of either bright blue light  or bright red light, depending on the structure of fluorescer and reaction conditions. the light emitter responsible for the chemi luminescence (cl) reaction is acridone and that the blue light produced with out the fluorescers is ...

In developing countries, night driving is extremely unsafe mainly due to; 1). Poorly followed traffic rules and 2) bad road conditions. The number of accidents is increasing at a frightening pace, necessitating the development of a low cost automatic headlight control system to ensure safety. In most accident cases, fatal collisions take place due to glare generated by excessive headlight inten...