Results 91 to 100 of about 611,978 (349)

A Dual-Band Polarization-Insensitive Frequency Selective Surface for Electromagnetic Shielding Applications

Sensors
This paper presents a novel polarization-insensitive dual-band frequency-selective surface (FSS)-based electromagnetic shield. The miniaturized FSS unit cell consists of a modified Jerusalem crossed loop and a corner-modified square loop.
Muhammad Idrees, Yejun He, Shahid Ullah, Sai-Wai Wong   +3 more
doaj   +1 more source

Spacecraft Antennas [PDF]

, 1990
Some of the various categories of issues that must be considered in the selection and design of spacecraft antennas for a Personal Access Satellite System (PASS) are addressed, and parametric studies for some of the antenna concepts to help the system ...
Cramer, Paul, Jamnejad, Vahraz, Manshadi, Farzin, Rahmat-Samii, Yahya   +3 more
core   +1 more source

Area Spectral Efficiency Analysis and Energy Consumption Minimization in Multi-Antenna Poisson Distributed Networks

, 2016
This paper aims at answering two fundamental questions: how area spectral efficiency (ASE) behaves with different system parameters; how to design an energy-efficient network. Based on stochastic geometry, we obtain the expression and a tight lower-bound
Chen, Zheng, Liang, Xiaowen, Qiu, Ling
core   +1 more source

Mass spectrometry based identification of AMP‐O‐Tris generated by Thermococcus onnurineus Cas10

FEBS Open Bio, EarlyView.
Isolated Thermococcus onnurineus Cas10 generates the noncanonical ATP‐derived product AMP‐O‐Tris while in Tris‐containing buffer as identified via mass spectrometry, revealing relaxed nucleophile selectivity under isolated conditions. These findings suggest that multiprotein Csm complex assembly restricts Cas10 reactivity toward canonical cyclic ...
Su‐Jin Lee, Ga Seul Lee, JinHan Kim, Kwang‐Hyun Park, Seong‐Ryung Go, Jeong Hee Moon, Eui‐Jeon Woo   +6 more
wiley   +1 more source

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

FEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento, Danniel Pereira‐Figueiredo, Gabriella Grossi de Lima Dias, Gabriel Ferreira dos Santos, Mariana Rodrigues Pereira, Rafael Brito, Karin C Calaza   +6 more
wiley   +1 more source

Reducing the Effects of Multiple Access Interference Signals Using Two Parallel Linear Antenna Array Based MVDR Beam former Technique [PDF]

, 2021
Suhail Najm, R Thakur, S Satrusallya, S Nilofera, T Filik, T Tuncer, D Zhang, Y Zhang, C Feng, L Chen, D Bi, J Pan, S Shahab, A Zainun, N Noordin, S Balasim, S Shahab, A Zainun, H Ali, M Hojabri, N Noordin, S Shahab, A Zainun, N Noordin, A Mohamad, O Khaldoon, S Shahab, A Zainun, S Balasim, N Noordin, I Ibrahim, V Nagaraju, A Sethy, R Boddu, S Balambigai, K Sakthisudhan, Z Zhang, Y Xu, M Yu, S Zhang, L Chen, D Yu, P Ramezanpour, M Rezaei, M Mosavi   +44 more
openalex   +1 more source

Pharmacological inhibition of the PERK pathway modulates hepatocellular carcinoma growth and immune signaling

FEBS Open Bio, EarlyView.
Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero, Maria Kopsida, Nathalie Arendt, Hans Lennernäs, Markus Sjöblom, Femke Heindryckx   +5 more
wiley   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

High-Isolation Eight-Element MIMO Array for 5G Smartphone Applications

IEEE Access, 2019
In this paper, an eight-element MIMO array for 5G smartphone applications in the 3.45-GHz band (3.3-3.6 GHz) is presented. The array consists of two types of four-antenna arrays (U-shaped and L-shaped coupled-fed loop elements), which are symmetrically ...
Wen Jiang, Bo Liu, Yangqiang Cui, Wei Hu
doaj   +1 more source

Asymptotics of Transmit Antenna Selection: Impact of Multiple Receive Antennas

, 2017
Consider a fading Gaussian MIMO channel with $N_\mathrm{t}$ transmit and $N_\mathrm{r}$ receive antennas. The transmitter selects $L_\mathrm{t}$ antennas corresponding to the strongest channels.
Asaad, Saba, Bereyhi, Ali, Müller, Ralf R., Rabiei, Amir M.   +3 more
core   +1 more source