Results 41 to 50 of about 259,360 (285)

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Beam-Sweeping Design Based on Nearest Users Position and Beam in 5G mmWave Networks

IEEE Access, 2020
The beam sweeping procedure estimates the beamforming directions, or beams, to be used for downlink millimeter-wave cellular transmissions to an incoming user entering the cell.
Stefano Tomasin, Christian Mazzucco, Danilo De Donno, Filippo Cappellaro   +3 more
doaj   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Cryo-EM structures of apo-APC/C and APC/CCDH1:EMI1 complexes provide insights into APC/C regulation

Nature Communications
APC/C is a multi-subunit complex that functions as a master regulator of cell division. It controls progression through the cell cycle by timely marking mitotic cyclins and other cell cycle regulatory proteins for degradation.
Anna Höfler, Jun Yu, Jing Yang, Ziguo Zhang, Leifu Chang, Stephen H. McLaughlin, Geoffrey W. Grime, Elspeth F. Garman, Andreas Boland, David Barford   +9 more
doaj   +1 more source

A Novel Beam Downtilt Selection Method for 3D Active Antenna System Based Cellular Network

Dianxin kexue, 2015
Traditional 2D active antenna system can only carry on horizontal beam steering in cellular mobile radio system. The existing 3D active antenna system based cellular network can obtain large throughput gain with the use of vertical beam steering.
Kai Wang, Liang Zhang, Guoping Tan
doaj   +2 more sources

Improved User Tracking in 5G Millimeter Wave Mobile Networks via Refinement Operations

, 2017
The millimeter wave (mmWave) frequencies offer the availability of huge bandwidths to provide unprecedented data rates to next-generation cellular mobile terminals.
Giordani, Marco, Zorzi, Michele
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Beam-domain hybrid time-switching and power-splitting SWIPT in full-duplex massive MIMO system

EURASIP Journal on Wireless Communications and Networking, 2018
In this paper, we consider the beam-domain hybrid time-switching (TS) and power-splitting (PS) simultaneous wireless information and power transfer (SWIPT) protocol design in full-duplex (FD) massive multiple-input multiple-output (MIMO) system, where ...
Kui Xu, Zhexian Shen, Yurong Wang, Xiaochen Xia   +3 more
doaj   +1 more source

User-centric Adaptive Base Station and Beam Selection Algorithm [PDF]

Jisuanji gongcheng, 2019
Aiming at the non-adaptive problem of selecting the optimal Micro Base Stations(MBSs) and beam according to the channel environment,based on the limited feedback beamforming technique of the random vector quantization codebook,the expression of the ...
WANG Tao,ZHOU Zhigang,LI Mao
doaj   +1 more source

An Efficient Beam Training Technique for Millimeter-Wave Cellular Communications [PDF]

ETRI Journal, 2015
In this paper, a beam ID preamble (BIDP) technique, where the beam ID is transmitted in the physical layer, is proposed for efficient beam training in millimeter-wave (mmWave) cellular communication systems. In order to facilitate beam ID detection in a multicell environment with multiple beams, the BIDP is designed such that the beam ID is mapped onto
Bon Woo Ku, Dae Gen Han, Yong Soo Cho
openaire   +1 more source