Results 51 to 60 of about 8,746,494 (343)

A Radiation Damage and Recovery Study for Lead Tungstate Crystals from BTCP and SIC [PDF]

, 2006
This paper presents result of a study on radiation damage and recovery for lead tungstate crystals produced at BTCP and SIC. Correlations were observed between initial light output and initial longitudinal transmittance at 360 nm, between the loss of ...
Chen, Jianming, Mao, Rihua, Zhang, Liyuan, Zhu, Ren-yuan   +3 more
core  

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Light activates output from evening neurons and inhibits output from morning neurons in the Drosophila circadian clock.

PLoS Biology, 2007
Animal circadian clocks are based on multiple oscillators whose interactions allow the daily control of complex behaviors. The Drosophila brain contains a circadian clock that controls rest-activity rhythms and relies upon different groups of PERIOD (PER)
Marie Picot, Paola Cusumano, André Klarsfeld, Ryu Ueda, François Rouyer   +4 more
doaj   +1 more source

Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes

Nanoscale Research Letters, 2019
This paper proposes a new encapsulation structure for aluminum nitride-based deep UV light-emitting diodes (DUV-LEDs) and eutectic flip chips containing polydimethylsiloxane (PDMS) fluid doped with SiO2 nanoparticles (NPs) with a UV-transparent quartz ...
Zhi Ting Ye, Yung-Min Pai, Chih-Hao Lin, Lung-Chien Chen, Hong Thai Nguyen, Hsiang-Chen Wang   +5 more
doaj   +1 more source

Doppler shift system [PDF]

, 1974
A system is described for measuring velocities of radiating particles based on Doppler shift. Light from the particles is directed through a narrow band optical filter to a Fabry-Perot interferometer initially tuned to a selected center line ...
Aisenberg, S.
core   +1 more source

Squeezing spectra of the output field by high density exciton laser

, 1999
The effect of the non-linear interaction between the high density Wannier excitons is analysed. We use the Fokker-Planck equation in the positive P presentation and the corresponding stochastic differential equation to study the composite system of a ...
Agranorich, Cao Chang-Qi, Caves, Drummond, Hanamura, Hanamura, Knoster, Liu Yu-Xi, Manabe, Schmitt-Rink, Schumaher, Slusher, Stoler, Stoler, Tokihiro, Tokihiro, Wang, Wu, Yuen, Yuen, Yuen   +20 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Theoretical analysis and experiment of subwavelength structure-integrated red AlGaInP light-emitting diodes for uniform field distribution and enhanced light extraction efficiency

AIP Advances, 2016
We report theoretical and experimental analysis of antireflective subwavelength structures (SWSs) on GaP substrates to enhance the light output with a uniform light distribution of AlGaInP-based red light-emitting diodes (LEDs).
Gil Ju Lee, Young Min Song
doaj   +1 more source

Improving the External Quantum Efficiency of High-Power GaN-Based Flip-Chip LEDs by Using Sidewall Composite Reflective Micro Structure

Micromachines, 2021
For high-power applications, it is important to improve the light extraction efficiency and light output of the vertical direction of LEDs. Flip-chip LEDs (FCLEDs) with an Ag/SiO2/distributed Bragg reflector/SiO2 composite reflection micro structure (CRS)
Liang Xu, Kaiping Fan, Huiqing Sun, Zhiyou Guo   +3 more
doaj   +1 more source