نتایج جستجو برای: ultraviolet spectrometer

تعداد نتایج: 61544  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان 1387

چکیده ندارد.

Journal: :Review of Scientific Instruments 2021

A machine learning approach has been implemented to measure the electron temperature directly from emission spectra of a tokamak plasma. This utilized neural network (NN) trained on dataset 1865 time slices operation DIII-D using extreme ultraviolet/vacuum ultraviolet spectroscopy matched with high-accuracy divertor Thomson scattering measurements temperature, Te. NN is shown be particularly go...

Journal: :The Astrophysical Journal 2022

We describe the energy budget of a coronal mass ejection (CME) observed on 1999 May 17 with Ultraviolet Coronagraph Spectrometer (UVCS). constrain physical properties CME's core material as function height along corona by using spectra taken single-slit coronagraph spectrometer at heliocentric distances 2.6 and 3.1 solar radii. use plasma diagnostics from intensity ratios, such O VI doublet lin...

Journal: :novelty in biomedicine 0
mohammadreza nazari department of optometry, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran saeed rahmani department of optometry, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran bahram khosravi department of optometry, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran seyyed mehdi tabatabaei

background: wearing spectacles is the most common approach in correcting the refractive errors worldwide. due to harmful effects of overexposure to solar ultraviolet radiations, the usage of multi-layer coatings in ophthalmic lenses has recently been increased. these lenses can reduce the reflections and hence increase the transmission of visible light; they can also decrease the transmission o...

Journal: :ACS combinatorial science 2012
Lei Chen Anqi Luo Yao Zhang Fayong Liu Yang Jiang Qingsheng Xu Xinhui Chen Qingzhuo Hu Shi-Fu Chen Kuo-Ju Chen Hao-Chung Kuo

The best performance of the phosphor Li(2)SrSiO(4): Eu(2+), Ce(3+) in terms of luminescence efficiency (LE), color rendering index (CRI) and color temperature (Tc) for light-emitting diode application was optimized with combinatorial approach. The combinatorial libraries were synthesized with solution-based method and the scale-up samples were synthesized with conventional solid-reaction method...

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