Results 61 to 70 of about 1,371,376 (301)

Investigation of spectrally broad gain multiple-width quantum well material for colliding pulse mode-locked operation [PDF]

open access: yes, 2004
The first colliding pulse mode-locked operation of devices fabricated from broad gain spectrum multiple-width quantum well material is reported. Using multiple-width quantum wells in the active region of the InGaAs/InAlGaAs material system, 35% broader ...
McDougall, S.D.   +3 more
core   +2 more sources

ДОВГОТРИВАЛА ЕЛЕКТРИЧНА МІЦНІСТЬ ПОЛІМЕРНИХ ПЛІВОК ПІД ДІЄЮ ЕЛЕКТРИЧНОГО ПОЛЯ

open access: yesElektrotehnìka ta Elektroenergetika, 2017
Мета роботи – вивчення довговічності полімерних плівок в усталеному електричному полі постійного струму, визначення характеру процесу електричного руйнування полімерних плівок за умов заглушення часткових розрядів.
A. P. Malyushevska   +2 more
doaj   +1 more source

Effects of IGFBP4 deficiency on human preadipocyte proliferation and differentiation through the IGF1R/AKT pathway

open access: yesFEBS Open Bio, EarlyView.
IGFBP4 knockdown (KD) impairs preadipocyte proliferation and is associated with IGF1R protein downregulation and attenuated AKT phosphorylation. The mechanisms by which IGFBP4 KD influences the IGF1R/AKT signaling pathway involve newly synthesized proteins and lysosomal degradation pathways. Created in BioRender.
Yujia Guo   +6 more
wiley   +1 more source

All-optical pulse reshaping and retiming systems incorporating pulse shaping fiber Bragg grating

open access: yes, 2006
This paper demonstrates two optical pulse retiming and reshaping systems incorporating superstructured fiber Bragg gratings (SSFBGs) as pulse shaping elements.
Ibsen, M.   +3 more
core   +1 more source

Self-compression of 4.9 µm pulses to sub-40 fs with 2 mJ energy in Zinc Sulfide [PDF]

open access: yesEPJ Web of Conferences
Nonlinear self-compression of few-cycle multi-mJ pulses at 4.9 µm in ZnS is presented. 80 fs input pulses are compressed to 37 fs with 2.1 mJ energy at a 1 kHz repetition rate. © 2024 The Author(s)
Bock Martin   +2 more
doaj   +1 more source

Pump–probe x-ray microscopy of photo-induced magnetization dynamics at MHz repetition rates

open access: yesStructural Dynamics, 2023
We present time-resolved scanning x-ray microscopy measurements with picosecond photo-excitation via a tailored infrared pump laser at a scanning transmission x-ray microscope.
Kathinka Gerlinger   +13 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

open access: yesFEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno   +3 more
wiley   +1 more source

Explosion crushing of scrap-iron and wastes

open access: yesЛитьë и металлургия, 2001
The article is devoted to primary processing of ferrous and non-ferrous metals with explosion power.
A. A. Andrushevich   +2 more
doaj  

Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption

open access: yesNature Communications, 2017
Many photo-induced processes such as photosynthesis occur in organic molecules, but their femtosecond excited-state dynamics are difficult to track. Here, the authors exploit the element and site selectivity of soft X-ray absorption to sensitively follow
T. J. A. Wolf   +23 more
doaj   +1 more source

Ionomycin suppresses cancer cell growth by disrupting mitochondrial transcription

open access: yesFEBS Open Bio, EarlyView.
In this study, we identify a new function for the selective Ca2+ ionophore, ionomycin, as an inhibitor of mitochondrial transcription. Both total and nascent RNA analyses revealed that ionomycin treatment reduces the transcription of mitochondrial genes.
Lishen Wang   +10 more
wiley   +1 more source

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