background & aim: a gag reflex (gr) can be a problem to compliance and delivery of dental treatment. the aim of this study was to evaluate the use of diospyros kaki l. fruit extract in controlling gag reflex during dental treatment. experimental: our study was a randomized double blind controlled trial with convenient sampling on 84 patients that is candidate for radiographic procedures in ...

A Fourier domain mode-locked (FDML) laser at 1050 nm for ultra-high-speed optical coherence tomography (OCT) imaging of the human retina is demonstrated. Achievable performance, physical limitations, design rules, and scaling principles for FDML operation and component choice in this wavelength range are discussed. The fiber-based FDML laser operates at a sweep rate of 236 kHz over a 63 nm tuni...

We present a simple design rule for diode-laserpumped quasi-three-level lasers by using the M2 factor. The validity of this model was demonstrated by diode-pumped Yb:YAG laser experiments. The maximum output power of 1.33 W and optical slope efficiency of 63% were obtained in a 400m Yb:YAGchip miniature laser. Using a 200m Yb:YAG chip, a 70% optical slope efficiency was reached. In a coupled-ca...

A 2.5 GS/s flash ADC, fabricated in 90nm CMOS utilizes comparator redundancy to avoid traditional power, speed and accuracy trade-offs. The redundancy removes the need to control comparator offsets, allowing the large process-variation induced mismatch of small devices in nanometer technologies. This enables the use of small-sized, ultra-low-power comparators with clock-gating capabilities in o...

Monoclonal antibody against histiocytosis X cells (HXCs) was established. The antigen was the cell membrane of HXCs from the submandibular lesion of a 63-year-old man who had been diagnosed as an adult type of histiocytosis X (HX) and whose HXCs had numerous Birbeck granules (BGs). The obtained monoclonal antibody, named MI1, reacted with the antigenic cell membrane of HXC. Immunoblotting showe...