Results 41 to 50 of about 998,630 (332)

Two-stage Channel Frequency Response Estimation in OFDM Systems [PDF]

, 2020
This paper proposes two-stage channel frequency response estimation algorithm in communication systems with OFDM technology. Algorithm is based on Kalman filter. Pilots from current and previous OFDM symbols are used for channel estimation.
Myronchuk, Oleksandr, Shpylka, Oleksandr, Zhuk, Serhii   +2 more
core   +2 more sources

Telematics and Gender Discrimination: Some Usage-Based Evidence on Whether Men’s Risk of Accidents Differs from Women’s

Risks, 2016
Pay-as-you-drive (PAYD), or usage-based automobile insurance (UBI), is a policy agreement tied to vehicle usage. In this paper we analyze the effect of the distance traveled on the risk of accidents among young drivers with a PAYD policy.
Mercedes Ayuso, Montserrat Guillen, Ana María Pérez-Marín   +2 more
doaj   +1 more source

Particulate Matter-Induced Inflammation/Oxidative Stress in Macrophages: Fucosterol from Padina boryana as a Potent Protector, Activated via NF-κB/MAPK Pathways and Nrf2/HO-1 Involvement

Marine Drugs, 2020
Fucosterol is a phytosterol that is abundant in marine brown algae and is a renowned secondary metabolite. However, its ability to protect macrophages against particulate matter (PM) has not been clarified with regard to inflammation; thus, this study ...
Thilina U. Jayawardena, K. K. Asanka Sanjeewa, Hyo-Geun Lee, D. P. Nagahawatta, Hye-Won Yang, Min-Cheol Kang, You-Jin Jeon   +6 more
doaj   +1 more source

The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes

Nanomaterials, 2022
In this work, nitrogen-doped ZnO nanoparticles were synthesized in various conditions by the gas evaporation method with DC arc plasma. Nitrogen concentrations of 6.38 × 1018 cm−3 to 2.6 × 1019 cm−3 were obtained at a chamber pressure of 150 torr, using ...
Islam Mohammad Shafiqul, Raj Deep, Jie Lin, Toshiyuki Yoshida, Yasuhisa Fujita   +4 more
doaj   +1 more source

Identification, Characterization, and Growth-Promoting Effects of Bacterial Endophytes Isolated from Okra (Abelmoschus esculentus L.)

Agronomy, 2023
Microorganisms colonize plant roots and exhibit plant growth promotion properties, therefore functioning as biofertilizers. To effectively use plant growth-promoting rhizobacteria, understanding their colonizing behavior and ability to compete with co ...
Ahsanul Salehin, Sakiko Yamane, Makoto Ueno, Shohei Hayashi   +3 more
doaj   +1 more source

The effects of dust on the optical and infrared evolution of SN 2004et

, 2011
We present an analysis of multi-epoch observations of the Type II-P supernova SN 2004et. New and archival optical spectra of SN 2004et are used to study the evolution of the Halpha and [O I] 6300A line profiles between days 259 and 646.
Andrews, Andrews, B. E. K. Sugerman, B. Ercolano, Barlow, Benetti, Bertoldi, Bianchi, Bohlin, Bouchet, Branch, Cardelli, D. L. Welch, Danziger, Dolphin, Dolphin, Draine, Ducati, Dwek, Dwek, Ercolano, Ercolano, Ercolano, Evans, Fabbri, Filippenko, Filippenko, Fitzgerald, Fransson, Geoffrey C. Clayton, Gerardy, Glass, Gordon, Hamuy, Herrmann, J. E. Andrews, J. Fabbri, Joseph S. Gallagher, Karachentsev, Kennicutt, Kirshner, Kotak, Kotak, Kozasa, Li, Li, Lucy, M. J. Barlow, M. Meixner, M. Otsuka, Maguire, Maiolino, Makovoz, Mathis, Meikle, Meikle, Meixner, Misra, Nozawa, Nugent, Panagia, Patat, Pozzo, R. Wesson, Richardson, Sahu, Schlegel, Stetson, Sugerman, Sugerman, Sugerman, Suntzeff, Szalai, Thatte, Todini, Tomaney, Walker, Welch, Wesson, Wooden, Woosley, Zubko, Zwitter   +82 more
core   +2 more sources

Hierarchy problem, gauge coupling unification at the Planck scale, and vacuum stability

Nuclear Physics B, 2015
From the point of view of the gauge hierarchy problem, introducing an intermediate scale in addition to TeV scale and the Planck scale (MPl=2.4×1018 GeV) is unfavorable.
Naoyuki Haba, Hiroyuki Ishida, Ryo Takahashi, Yuya Yamaguchi   +3 more
doaj   +1 more source

Microcystin-LR incorporated into colonic cells through probenecid-sensitive transporters leads to upregulated MCP-1 expression induced by JNK activation

Toxicology Reports, 2022
Harmful algae that inhabit eutrophic lakes produce cyanotoxic microcystins. Therefore, the relationship between chronic exposure to microcystins via drinking water and organ disorders has been investigated.
Yoshihito Koto, Hideaki Kawahara, Koichi Kurata, Keisuke Yoshikiyo, Ayumi Hashiguchi, Kunihiro Okano, Norio Sugiura, Kazuya Shimizu, Hidehisa Shimizu   +8 more
doaj   +1 more source

Evolutionary dynamics of the chloroplast genome in Daphne (Thymelaeaceae): comparative analysis with related genera and insights into phylogenetics

FEBS Open Bio, EarlyView.
Comparative analysis of chloroplast genomes from 14 genera of Thymelaeaceae revealed variation in gene content, ranging from 128 to 142 genes, primarily influenced by IR expansion/contraction events and pseudogenization of ndhF, ndhI, and ndhG. Two large inversions were detected within the large single‐copy region, including a synapomorphic inversion ...
Abdullah, Hui Li, Rushan Yan, Chengyu Chen, Madiha Islam, Abdul Majid, Ibrar Ahmed, Parviz Heidari, Xiaoxuan Tian   +8 more
wiley   +1 more source

A Late Performance: Intimate Distance (Yingmei Duan) [PDF]

, 2013
A written account of a performance by Yingmei Duan translated to video.
Bamford, K
core