Results 51 to 60 of about 6,700 (283)

Secure Energy Efficiency for NOMA Based Cognitive Radio Networks With Nonlinear Energy Harvesting

open access: yesIEEE Access, 2018
In order to improve the spectrum efficiency and secrecy energy efficiency, in this paper, we propose a non-orthogonal multiple access (NOMA)-based secure scheme for cognitive radio networks. In the proposed scheme, the secondary users harvest energy from
Dawei Wang, Shaoyang Men
doaj   +1 more source

Enabling Semantic-Functional Communications for Multiuser Event Transmissions via Wireless Power Transfer

open access: yesSensors, 2023
A central concern for large-scale sensor networks and the Internet of Things (IoT) has been battery capacity and how to recharge it. Recent advances have pointed to a technique capable of collecting energy from radio frequency (RF) waves called radio ...
Pedro E. Gória Silva   +3 more
doaj   +1 more source

Radio frequency energy harvesting [PDF]

open access: yes, 2020
This thesis is devoted to energy harvesting from radio waves in Urban and Semi-Urban Environments, and analyzes the characteristics of antennas used, as well as the results of the experimental ...
Sultonova, M. O., Yuldoshev, T. A.
core  

Energy Harvesting—Technical Analysis of Evolution, Control Strategies, and Future Aspectsa

open access: yesJournal of Electronic Science and Technology, 2019
This paper provides a technical analysis of energy harvesting (EH) in the field of power and energy sector, including different aspects of harvesting energy, individual case history, control strategies of harvesting in the field of power and energy ...
MD. Shahrukh Adnan Khan   +5 more
doaj   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

A SIMPLE CONCEPT OF ENERGY HARVESTING USING RADIO FREQUENCY

open access: yes, 2016
Energy harvesting is a process where certain sources is extracted and converted into DC output by connecting relevant circuits. This energy harvesting technique can reduce the usage of electricity for small power consuming devices. Some of the techniques
Balakrishnan, Saravanan   +1 more
core   +1 more source

Tri-Band Rectenna Dedicated to UHF RFID, GSM-1800 and UMTS-2100 Frequency Bands

open access: yesSensors, 2022
The omnipresence of connected objects leads to the quasi-permanent presence of electromagnetic waves from different sources in our environment. This article presents a new electromagnetic energy harvesting device, rectenna type, which offers the ...
Ognadon Assogba   +4 more
doaj   +1 more source

USP29‐regulated noncanonical stabilization of the hypoxia‐inducible factor‐α in aggressive prostate cancer

open access: yesMolecular Oncology, EarlyView.
We identify USP29 as the only DUB mirroring CA9 expression, a marker of hypoxia and HIF pathway activation associated with PCA aggressiveness. USP29 stabilizes HIF‐1α and HIF‐2α via a noncanonical mechanism that is independent of PHD/pVHL activity yet relies on proteasomal regulation, establishing USP29 as a previously unrecognized regulator of hypoxic
Amelie S Schober   +16 more
wiley   +1 more source

Piezoelectric Energy Harvesting: Enhancing Power Output by Device Optimisation and Circuit Techniques [PDF]

open access: yes, 2010
Energy harvesting; that is, harvesting small amounts of energy from environmental sources such as solar, air flow or vibrations using small-scale (≈1cm 3 ) devices, offers the prospect of powering portable electronic devices such as GPS receivers and
Worthington, Emma
core  

Self-powered autonomous wireless sensor node using vibration energy harvesting

open access: yes, 2008
This paper reports the development and implementation of an energy aware autonomous wireless condition monitoring sensor system (ACMS) powered by ambient vibrations.
Torah, Russel   +11 more
core   +1 more source

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