Results 1 to 10 of about 6,827,916 (188)

Risk factors for virologic failure and persistent low-level viremia in people with HIV experiencing low-level viremia: Chongqing ART cohort study, 2019–2023 [PDF]

Frontiers in Medicine
BackgroundLow-level viremia (LLV) during effective antiretroviral therapy (ART) presents ongoing management challenges globally, with reported prevalence rates of 10–46% in resource-limited settings. The clinical significance of LLV remains controversial:
Huizheng Zhang, Jinjin Liu, Zhen Zhang, Yuqi Huo, Wanting Zeng   +4 more
doaj   +2 more sources

Subarctic-scale transport of 134Cs to ocean surface off northeastern Japan in 2020

Scientific Reports, 2023
We studied the spatiotemporal variations in 134Cs, 137Cs, and 228Ra concentrations at the sea surface off southeastern Hokkaido, Japan (off-Doto region) from 2018 to 2022 using low-background γ-spectrometry.
Mutsuo Inoue, Kaisei Mashita, Hiroaki Kameyama, Hayata Mitsunushi, Yota Hatakeyama, Yukiko Taniuchi, Takuya Nakanowatari, Takami Morita, Seiya Nagao   +8 more
doaj   +1 more source

Numerical study of a near-infrared to mid-infrared perfect absorber based on tunable GaAs metamaterial

AIP Advances, 2023
An infrared perfect absorber structure is designed based on GaAs/Au/SiO2 metamaterial with numerical simulation, in which gold split ring resonators (SRR) embedded in the GaAs layer.
Ruoyu Zhang, Xin Guo, Yang Li, Haoyu Wu, Hongjin Qiu, Tiantian Jia, Xuchuan Liu, Linyu Gan, Peng Chen, Hongchang Cheng   +9 more
doaj   +1 more source

Unique current connecting Southern and Indian Oceans identified from radium distributions

Scientific Reports, 2022
We examined the spatial variations in 226Ra and 228Ra (activities) concentrations from the surface to a depth of 830 m in the Indian and Southern Oceans from December 2019 to January 2020.
Mutsuo Inoue, Shotaro Hanaki, Hiroaki Kameyama, Yuichiro Kumamoto, Seiya Nagao   +4 more
doaj   +1 more source

Modelling the Light Scattering Behavior of Transmission-Mode GaAs Photocathode Under the AlGaAs Window Layer Rough Surface

IEEE Photonics Journal, 2023
To improve the understanding of the optical image resolution of transmission-mode GaAs photocathode, by establishing the surface scattering analysis model of AlGaAs window layer, we have researched the effect of the surface height distribution variance &#
Xin Guo, Feng Shi, Tiantian Jia, Ruoyu Zhang, Jinjuan Du, Peng Chen, Haoyu Wu, Hongchang Cheng, Yijun Zhang   +8 more
doaj   +1 more source

Non-linear dose response of DNA double strand breaks in response to chronic low dose radiation in individuals from high level natural radiation areas of Kerala coast

Genes and Environment, 2023
Background The human population living in high level natural radiation areas (HLNRAs) of Kerala coast provide unique opportunities to study the biological effects of low dose and low dose rate ionizing radiation below 100 mGy.
Vinay Jain, Divyalakshmi Saini, D. C. Soren, V. Anil Kumar, P. R. Vivek Kumar, P. K. M. Koya, G. Jaikrishan, Birajalaxmi Das   +7 more
doaj   +1 more source

Enhanced photoemission performance of an AlGaN photocathode by a superlattice emission layer

AIP Advances, 2023
The AlGaN photocathode with a superlattice emission layer was grown by metal organic chemical vapor deposition. The existence of the superlattice structure was confirmed using a transmission electron microscope, and its optical and electrical properties ...
Jinjuan Du, Hongchang Cheng, Yang Li, Peng Chen, Ruoyu Zhang, Xin Guo, Yufeng Zhu, Zhuang Miao, Yijun Zhang, Lei Liu   +9 more
doaj   +1 more source

Cs/O co-adsorption on C-doped GaAs surface: From first-principles simulation to experiment

AIP Advances, 2023
C-doped GaAs is considered a potential material for negative electron affinity photocathodes, where the p-type doped property is beneficial to photoemission. To clarify the stability and efficiency during Cs/O activation, the gradient concentration of Cs
Xin Guo, Feng Shi, Ruoyu Zhang, Linyu Gan, Tiantian Jia, Jinjuan Du, Hongjin Qiu, Yijun Zhang   +7 more
doaj   +1 more source

Evaluation of risk due to chronic low dose ionizing radiation exposure on the birth prevalence of congenital heart diseases (CHD) among the newborns from high-level natural radiation areas of Kerala coast, India

Genes and Environment, 2022
Background The human population residing in monazite bearing Kerala coast are exposed to chronic low dose and low dose rate external gamma radiation due to Th232 deposits in its beach sand.
K. R. Sudheer, P. K. Mohammad Koya, Anu J. Prakash, Ambily M. Prakash, R. Manoj Kumar, S. Shyni, C. K. Jagadeesan, G. Jaikrishan, Birajalaxmi Das   +8 more
doaj   +1 more source

Radio-adaptive response and correlation of non-homologous end joining repair gene polymorphisms [XRRC5 (3R/2R/1R/0R), XRCC6(C/G) and XRCC7 (G/T)] in human peripheral blood mononuclear cells exposed to gamma radiation

Genes and Environment, 2021
Background Radio-adaptive response (RAR) is transient phenomena, where cells conditioned with a small dose (priming) of ionizing radiation shows significantly reduced DNA damage with a subsequent high challenging dose. The role of DNA double strand break
Shridevi Shelke, Birajalaxmi Das
doaj   +1 more source