نتایج جستجو برای: visible

تعداد نتایج: 76201  

Journal: :Nature 1925

2017
Jing Leng Shi-Meng Wang Hua-Li Qin

A highly efficient and chemoselective method for the synthesis of diaryl disulfides is developed via a visible light-promoted coupling of readily accessible arenediazonium tetrafluoroborates and CS2. This practical and convenient protocol provides a direct pathway for the assembly of a series of disulfides in an environmentally friendly manner with good to excellent yields.

Journal: :Chemical communications 2009
Yongfu Sun Changzheng Wu Ran Long Yang Cui Shudong Zhang Yi Xie

A novel multiresponsive function of monoclinic BiVO(4) has been put forward for the first time, and loosely packed monoclinic BiVO(4) nanoellipsoids with many exposed crystal planes have been designed and synthesized in order to improve their smart multiresponses to visible light, trace gas and temperature.

Journal: :Optics letters 2012
E Stoykova F Yaraş H Kang L Onural A Geltrude M Locatelli M Paturzo A Pelagotti R Meucci P Ferraro

A circular holographic display that consists of phase-only spatial light modulators is used to reconstruct images in visible light from digital holograms recorded under infrared (10.6 μm) illumination. The reconstruction yields a holographic digital video display of a three-dimensional ghostlike image of an object floating in space where observers can move and rotate around it.

1999
Bernardino Adão Jorge Barros Luís

The options premiums are frequently used to obtain probability density functions (pdfs) for the prices of the underlying assets. When these assets are bank deposits or notional Government bonds it is possible to compute probability measures of future interest rates. Recently, in the literature there have been many papers presenting methods of how to estimate pdfs from options premiums. Neverthe...

Journal: :Physical review. B, Condensed matter 1996
Driessen Cheong Mascarenhas Deb Hageman Bauhuis Giling

Journal: :Chemical communications 2013
Tao Gong Brian J Adzima Christopher N Bowman

A novel copper(II) complex has been developed in which the counter anion, acylphosphinate, serves as a visible light photoinitiator. This molecule is inactive in the dark but, upon visible light exposure, both CuAAC and ATRP reactions are readily and rapidly initiated.

2017
Peitao Liu Jingyan Zhang Daqiang Gao Weichun Ye

Here, W(NxS1-x)2 nanoflowers were fabricated by simple sintering process. Photocatalytic activity results indicated our fabricated N-doped WS2 nanoflowers shown outstanding photoactivity of degradating of rhodamine B with visible light. Which is attributed to the high separation efficiency of photoinduced electron-hole pairs, the broadening of the valence band (VB), and the narrowing of energy ...

Journal: :Journal of photochemistry and photobiology. B, Biology 2008
J Turner A V Parisi D J Turnbull

Ultraviolet (UV) radiation affects human life and UV exposure is a significant everyday factor that individuals must be aware of to ensure minimal damaging biological effects to themselves. UV exposure is affected by many complex factors. Albedo is one factor, involving reflection from flat surfaces. Albedo is defined as the ratio of reflected (upwelling) irradiance to incident (downwelling) ir...

Journal: :Chemical communications 2012
Jeho Lee Jiwon Kwak Kyoung Chul Ko Ji Hoon Park Ju Hong Ko Nojin Park Eunchul Kim Do Hyun Ryu Tae Kyu Ahn Jin Yong Lee Seung Uk Son

New phenothiazine-based organic dyes with two anchoring groups at 3,7 positions and systematic alkyl chains on nitrogen were prepared. Their TiO(2)-Pt composites showed excellent photo-catalytic activities in visible light-induced water splitting. Interestingly, phenothiazine dyes with longer alkyl chains showed better stability in catalytic systems.

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