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The shorter the focal length, the closer the focal plane is to the back of the lens. Lenses are identified by their focal length. Focal length is expressed in ...

Large Scale Facial Model (LSFM) - an automatic pipeline for constructing 3D Morphable Models from large collections of facial meshes - lsfm/README.md at ...

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PDF | The first gas laser and the second laser after ruby laser was the He-Ne laser, it was invented in 1961 by the Iranian physicist Ali Javan who.

What is grating

Aug 20, 2019 — Solids are made up also by molecules and by lattices. These groupings have binding energies and the corresponding possibility of absorbing a ...

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Fractional lasers such erbium:YAG (Er:YAG) are among popular options for facial rejuvenation. Lasers with infrared wavelength ranges such as long pulse Nd:YAG have been used in nonablative rejuvenation of skin with variable outcomes. In this study, we plan to compare safety and efficacy of fractional Er:YAG and long pulse Nd:YAG for facial rejuvenation applying objective and subjective measurements. Twenty-five patients with Glogau photo aging scale of II to IV were recruited in this randomized face-split double-blind controlled trial. Individuals received three monthly treatments on two sides of the face; one side was treated by fractional Er:YAG laser and the other side by long pulse Nd:YAG laser. Outcomes were evaluated by two blinded dermatologists, patient satisfaction reports and objective measurements of cutaneous resonance running time (CRRT). Both modalities significantly improved periorbital wrinkling, nasolabial folds, dyschromia and skin laxity, and sagging of jowls (p value < 0.05), with no noticeable difference between two lasers. Mean CRRT values decreased significantly after treatment with both lasers. The downtime was significantly lower for the Nd:YAG-treated side. Fractional Er:YAG laser and long pulse Nd:YAG has comparable effects in facial rejuvenation but little to no downtime of the latter makes it popular for many patients. ClinicalTrials.gov Identifier: IRCT2015120320468N3.

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Usually, you will find multiple objective lenses on a microscope, consisting of 1.25X to 150X. What does the objective lens on a microscope do? Objective lenses ...

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What is the diffraction gratingin physics

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Parker's offerings of motorized positioning stages and tables comprise precision rotary tables; cross-roller guided miniature linear positioning stages; ...

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