Results 1 to 10 of about 7,734 (310)

Public Exposure to Natural Radiation and the Associated Increased Risk of Lung Cancer in the Betare-Oya Gold Mining Areas, Eastern Cameroon [PDF]

open access: yesJournal of Radiation Protection and Research, 2023
Background This study aims to reevaluate natural radiation exposure, following up on our previous study conducted in 2019, and to assess the associated risk of lung cancer to the public residing in the gold mining areas of Betare-Oya, east Cameroon, and ...
Joseph Emmanuel Ndjana Nkoulou   +7 more
doaj   +1 more source

H2 formation via non-Born-Oppenheimer hydrogen migration in photoionized ethane

open access: yesNature Communications, 2023
Neutral H2 formation via intramolecular hydrogen migration in hydrocarbon molecules plays a vital role in many chemical and biological processes. Here, employing cold target recoil ion momentum spectroscopy (COLTRIMS) and pump-probe technique, we find ...
Yizhang Yang   +15 more
doaj   +1 more source

Track the Conformational Change of Unlabeled Yeast Cytochrome c in Cell Homogenate Using NMR

open access: yesChinese Journal of Magnetic Resonance, 2023
Cytochrome c (cyt c) is an important multifunctional protein. In mitochondria, it acts as a carrier for electron transporting. In cytoplasm, it may act as an apoptotic initiator to initiate the apoptotic process.
ZHAN Jianhua   +5 more
doaj   +1 more source

Ferroelectric 2D ice under graphene confinement

open access: yesNature Communications, 2021
Ferroelectric ordering of water has been at the heart of intense debates due to its importance in enhancing our understanding of the condensed matter.
Hao-Ting Chin   +9 more
doaj   +1 more source

Kinetic Evolution of Laser Ablating Alloy Materials

open access: yesFrontiers in Physics, 2021
Through the theoretical simulation and analysis of the whole process of laser ablating target and producing plasma with high spatio-temporal resolution, it is helpful for people to gain a more complete understanding of the ablation process of target and ...
Junxiao Wang   +14 more
doaj   +1 more source

Supercontinuum Induced by Filamentation of Bessel-Gaussian and Laguerre-Gaussian Beams in Water

open access: yesApplied Sciences, 2022
In this paper, we study the characteristics of the supercontinuum (SC) induced by the filamentation of two typical vortex beams (i.e., Laguerre-Gaussian (LG) and Bessel-Gaussian (BG) beams) in water.
Jiabin Wu   +6 more
doaj   +1 more source

The ellipticity dependence of Rydberg state excitation of noble gas atoms subject to strong laser fields

open access: yesFrontiers in Physics, 2023
In this work, we theoretically investigate the ellipticity dependence of the Rydberg state excitation (RSE) and ionization of noble gas atoms subject to strong laser fields at a series of intensities and wavelengthes by a semiclassical model, where the ...
Zhiqiang Wang   +8 more
doaj   +1 more source

Emission Enhancement in fs + ns Dual-Pulse LIBS of Cu

open access: yesPhotonics, 2023
Femtosecond (fs) and nanosecond (ns) laser pulses have their own advantages and disadvantages in laser-induced breakdown spectroscopy (LIBS). This paper investigated fs + ns (FN) dual-pulse (DP) LIBS, utilizing the respective advantages of two laser ...
Junfeng Shao, Yin Zhang, Anmin Chen
doaj   +1 more source

Effect of OH emission on the temperature and wind measurements derived from limb-viewing observations of the 1.27 µm O2 dayglow [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
The O2(a1Δg) emission near 1.27 µm is well-suited for remote sensing of global wind and temperature in near-space by limb-viewing observations to its bright signal and extended altitude coverage.
K. Wu, W. He, Y. Feng, Y. Xiong, F. Li
doaj   +1 more source

Short-chain fatty acids reprogram metabolic profiles with the induction of reactive oxygen species production in human colorectal adenocarcinoma cells

open access: yesComputational and Structural Biotechnology Journal, 2023
Short-chain fatty acids (SCFAs) exhibit anticancer activity in cellular and animal models of colon cancer. Acetate, propionate, and butyrate are the three major SCFAs produced from dietary fiber by gut microbiota fermentation and have beneficial effects ...
Chongyang Huang   +10 more
doaj   +1 more source

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