نتایج جستجو برای: zener diode
تعداد نتایج: 21983 فیلتر نتایج به سال:
introduction: the aim of this study was to compare the antibacterial efficacy of diode laser 810nm and photodynamic therapy (pdt) in reducing bacterial microflora in endodontic retreatment of teeth with periradicular lesion. methods: in this in vivo clinical trial, 20 patients who needed endodontic retreatment were selected. after conventional chemo mechanical preparation of root canals, microb...
introduction: to improve laser hair removal (lhr) for dark skin, the fluence rate reaching the hair follicle in lhr is important. this paper presents the results of a comparative study examining the function of wavelength on dark skin types using 755 nm alexandrite and 810 nm diode lasers. methods: the structure of the skin was created using a realistic skin model by the advanced systems analys...
Employing the time-dependent variational principle combined with multiple Davydov $\mathrm{D}_2$ Ansatz, we investigate Landau-Zener (LZ) transitions in a qubit coupled to photon mode various initial states at zero temperature. Thanks trial states, exact photonic dynamics taking place course of LZ transition is also studied efficiently. With driven by linear external field and initialized Schr\...
The Zhu-Nakamura theory was proved to work well within the TSH (trajectory surface hopping) scheme in the case of DH2 which presents a typical example of crossing seam type chemical reactions. It was found that the classically forbidden nonadiabatic transitions which cannot be treated by the Landau-Zener theory play important roles. In the present work the similar kind of analysis is carried ou...
Cold-target recoil-ion-momentum spectroscopy ~COLTRIMS! has been used to study single electron capture from He by Ar ions at projectile velocities between 0.2 and 1.0 a.u. Populations of 3d through 7l states on the final ion are resolved, and angular distributions are presented for separated major final channels. As the projectile velocity is raised, the reaction window is observed to spread. C...
Georg Heinrich,1 J. G. E. Harris,2,3 and Florian Marquardt1 1Arnold Sommerfeld Center for Theoretical Physics, Center for NanoScience and Department of Physics, Ludwig-Maximilians-Universität München, Theresienstr. 37, D-80333 München, Germany 2Department of Physics, Yale University, 217 Prospect Street, New Haven, Connecticut 06520, USA 3Department of Applied Physics, Yale University, 15 Prosp...
Background and purpose: Prevention of dental caries is one of the primary goals in dentistry. Application of fluoride decreased dental demineralization but the preventive ability of this fluoride is limited. Nowadays different investigations into dental erosion focused on the preventive effect of laser irradiation. The purpose of this applied study was to assess the effect of diode laser (&lamb...
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