Results 1 to 10 of about 776,544 (281)

Color Changes in Ag Nanoparticle Aggregates Placed in Various Environments: Their Application to Air Monitoring

Nanomaterials, 2021
Fresh Ag nanoparticles (NPs) dispersed on a transparent SiO2 exhibit an intense optical extinction band originating in localized surface plasmon resonance (LSPR) in the visible range.
Koichi Ozaki, Fumitaka Nishiyama, Katsumi Takahiro   +2 more
doaj   +1 more source

PossibleExistence of Dark-Matter-Admixed Pulsar in the Disk Region of the Milky Way Galaxy

Universe, 2022
In our previous study, (Eur Phys J Plus 135:362, 2020 & Eur Phys J Plus 135:637, 2020), we have discussed the possible existence of the dark-matter-admixed pulsars, located in dwarf as well as in massive spiral galaxies (based on Singular Isothermal ...
Nilofar Rahman, Masum Murshid, Sajahan Molla, Mehedi Kalam   +3 more
doaj   +1 more source

RF Multiplier Based on Harmonic-Locked SMFP-LD and OEO Structure

IEEE Access, 2022
We propose and experimentally demonstrate an RF signal multiplier based on optical injection locking in a semiconductor laser followed by an optoelectronic oscillator (OEO).
Hao Chen, Ikechi Augustine Ukaegbu, Bikash Nakarmi, Shilong Pan   +3 more
doaj   +1 more source

Ambiguous red shifts [PDF]

AIP Conference Proceedings, 2010
A one-parameter conformal invariance of Maxwell's equations allows the wavelengths of electromagnetic waves to change as they propagate, and do so even in otherwise field-free space. This produces an ambiguity in interpretations of stellar red shifts.
Carl E. Wulfman, Kurt B. Wolf, Luis Benet, Juan Mauricio Torres, Peter O. Hess   +4 more
openaire   +2 more sources

LHCA4 residues surrounding red chlorophylls allow for fine-tuning of the spectral region for photosynthesis in Arabidopsis thaliana

Frontiers in Plant Science, 2023
Improving far-red light utilization could be an approach to increasing crop production under suboptimal conditions. In land plants, only a small part of far-red light can be used for photosynthesis, which is captured by the antenna proteins LHCAs of ...
Xiuxiu Li, Xiuxiu Li, Lixia Zhu, Jince Song, Wenda Wang, Tingyun Kuang, Gongxian Yang, Chenyang Hao, Xiaochun Qin   +8 more
doaj   +1 more source

Absorption and Fluorescence Properties of 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione. A Covalent Fluorescence in Solution and in the Solid State

مجلة بغداد للعلوم, 2022
In the cuurent article, the photophysical properties of 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione were investigated.
Roza Al-Aqar
doaj   +1 more source

Spectral Evolution in Fiber Lasers With Soliton Self-Frequency Shift Effect

IEEE Photonics Journal, 2021
The generation and evolution process of red shifting in a ultrafast fiber laser with the soliton self-frequency shift are investigated by numerical simulation.
Mengmeng Han, Yueqing Du, Peiyun Cheng, Xuewen Shu   +3 more
doaj   +1 more source

Red Shift

IMPACT Printmaking Journal
This paper evokes the dynamic colour space that results when a printed colour (subtractive) interacts with colour from video projection (additive). Colour shapes our knowledge and adds mystery to our world as light and pigmented surfaces interrelate. In our recent work, Breath, we present a richly layered mural-sized print along with video projection ...
Deborah Cornell, Richard Cornell
  +5 more sources

Quntitative structure activity relationship (QSAR) of UV-visible spectrum of some different chalkons [PDF]

شیمی کاربردی روز, 2013
  The UV-visible spectrum of some different chalkons with both electron with-drawing and electron-donating groups have been investigated. The results showed that electron with-drawing groups cause Blue-Shift and electron-donating groups cause Red-Shift.
Salman Rahmani, Ali Amoozadeh
doaj   +1 more source

Purification and Characterisation of Two Novel Pigment Proteins from the Carapace of Red Swamp Crayfish (Procambarus clarkii)

Foods, 2021
Pigment proteins play a vital role in the red colour change of the red swamp crayfish (Procambarus clarkii) shell after cooking. In this study, two red-change-related pigment proteins with molecular weights of approximately 170 and 43 kDa—denoted as F1 ...
Hao Chen, Hongwu Ji, Chuang Pan, Di Zhang, Weiming Su, Shucheng Liu, Yijia Deng, Xiaodan Huang   +7 more
doaj   +1 more source