Results 71 to 80 of about 2,504,636 (253)

Investigation on Experimental Conditions and Quantitative Analysis for Fe and Si Elements in General Aluminum by Laser Induced Breakdown Spectroscopy Technique

, 2019
In order to promote the application of LIBS technology in electrolytic aluminum industry, give full play to its advantages of rapidness, no preparation and multi-element simultaneous detection.
Cong Zhi-bo, Sun Lan-xiang, Lu Hui, Hu Xiao-jun, Cao Bin, Dong Wei   +5 more
core   +1 more source

The mechanism of carbon monoxide fluorescence inside a femtosecond laser-induced plasma

Open Physics
The fluorescence spectrum of CO molecules in intense femtosecond laser fields was studied experimentally. Distinct spectral lines from excited atoms and molecules were identified.
Zhang Junfeng, Shi Dandan, Wang Qinxin, Lv Hang   +3 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Spectroscopic Imaging of Cutaneous Squamous Cell Carcinoma Based on Acousto-Optic Filtering

, 2020
Noncollinear acousto-optic tunable filter (AOTF) based on TeO2 is a type of good light splitting device with the electric tuning. Because of its advantages of compact size, high stability, fast tuning, and being easy to carry out, it has high practical ...
Huang Zu-fang, Qiu Ze-long, Zhang Chun-guang, Wang Hao, Xing Yu-wei, Sheng Zhen-fei, Qiu Wei-jie, Zhang Xiao-fa, Lin Bin-bin, Liu Yi-ping, Duan Mao-qiang, Huang Xiao-li, Huang Xi, Tan Zhi-wei, Wang Peng-chong, Liu Wen-yao   +15 more
core   +1 more source

Solar Spectral Lines (»Solar Halo«) – Healing or Harmful for The Retina? [PDF]

, 2010
The sungazing method has been known for thousands of years as healing method based on chromotherapeutic principle. Our examinations on the island of Rab show that it is acceptable only if applied 10 min before the sunset.
Vojniković, Božo, Njirić, Sanja
core   +1 more source

Small-scale magnetic field effects on individual spectral line radial velocities in the photosphere and chromosphere of the Sun

Astronomy & Astrophysics
Context. Advancements in extreme-precision radial velocity (RV) observations for detecting low-mass exoplanets show that different spectral lines show different behaviours in response to stellar activity. Though this can be dealt with experimentally, why
Dorval P., Piskunov N., de la Cruz Rodríguez J.   +2 more
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

The Study of Oil Film Thickness Measurement on Water Surface Based on Laser Raman Spectroscopy

, 2018
In order to realize the fast and non-contact detection of oil film thickness on water surface, a system based on laser Raman spectroscopy technologywas introduced in this paper. The 532 nm laser was used as the exciting source, and the result shows there
Feng Wei-wei, Cai Zong-qi, Wang Chuan-yuan   +2 more
core   +1 more source

Amplified Fiber-Optic Recirculating Delay Lines [PDF]

, 1994
Experimental and theoretical results on single- and double-amplified recirculating delay lines are presented. One of our aims is to emphasize their application as filters, showing a wide flexibility of design.
Vizoso, Beatriz, López Amo, Manuel, Vázquez García, María Carmen, Vázquez, Carmen, Lopez-Amo, Manuel, Muriel, Miguel A., Civera, Rafael   +6 more
core   +3 more sources