Results 101 to 110 of about 3,524,493 (338)

Indoor Wireless RF Energy Transfer for Powering Wireless Sensors [PDF]

, 2012
For powering wireless sensors in buildings, rechargeable batteries may be used. These batteries will be recharged remotely by dedicated RF sources. Far-field RF energy transport is known to suffer from path loss and therefore the RF power available on ...
Visser, H.
core   +1 more source

RF power generation

, 2011
This paper reviews the main types of r.f. power amplifiers which are, or may be, used for particle accelerators. It covers solid-state devices, tetrodes, inductive output tubes, klystrons, magnetrons, and gyrotrons with power outputs greater than 10 kW c.
Carter, R. G.
core   +1 more source

Bidirectional DC Converter with Frequency Control: Analysis and Implementation

Energies, 2018
In this paper, a direct current (dc) converter with the abilities of bidirectional power transfer and soft switching characteristics is studied and implemented. The circuit schematic of the developed dc converter is built by a half-bridge converter and a
Bor-Ren Lin, Yen-Chieh Huang
doaj   +1 more source

Survivin and Aurora Kinase A control cell fate decisions during mitosis

Molecular Oncology, EarlyView.
Aurora A interacts with survivin during mitosis and regulates its centromeric role. Loss of Aurora A activity mislocalises survivin, the CPC and BubR1, leading to disruption of the spindle checkpoint and triggering premature mitotic exit, which we refer to as ‘mitotic slippage’.
Hana Abdelkabir, Shalitha Wickrama Arachchige, Sally P. Wheatley   +2 more
wiley   +1 more source

CDK11 inhibition induces cytoplasmic p21WAF1 splice variant by p53 stabilisation and SF3B1 inactivation

Molecular Oncology, EarlyView.
CDK11 inhibition stabilises the tumour suppressor p53 and triggers the production of an alternative p21WAF1 splice variant p21L, through the inactivation of the spliceosomal protein SF3B1. Unlike the canonical p21WAF1 protein, p21L is localised in the cytoplasm and has reduced cell cycle‐blocking activity.
Radovan Krejcir, Lukasz Arcimowicz, Lucia Martinkova, Vaclav Hrabal, Filip Zavadil Kokas, Tomas Henek, Martina Kucerikova, Ondrej Bonczek, Pavlina Zatloukalova, Lenka Hernychova, Philip J. Coates, Borivoj Vojtesek, David P. Lane   +12 more
wiley   +1 more source

Radiative lifetime measurements of rubidium Rydberg states

, 2009
We have measured the radiative lifetimes of ns, np and nd Rydberg states of rubidium in the range 28 < n < 45. To enable long-lived states to be measured, our experiment uses slow-moving Rb atoms in a magneto-optical trap (MOT).
A Kortyna, Beterov I I, C Vesa, D A Tate, D B Branden, Feng Z G, Gallagher T F, He X, Hugon M, M Zheng, Marcassa L G, Marek J, R O Wilson, T Juhasz, T Mahlokozera   +14 more
core   +1 more source

Improving Energy Harvesting System from Ambient RF Sources in Social Systems with Overcrowding

International Journal of Crowd Science
This paper presents a novel approach to enhance energy harvesting systems from ambient Radio Frequency (RF) sources in overcrowded environments. In environments like shopping malls, coffee shops, and airports, where wireless devices are prevalent, the ...
Ramy Agieb, Ayman Amer, Ibrahim Mansour, Ahmed Solyman, Khalid Yahya, Ahmed Samir   +5 more
doaj   +1 more source

Reduced vascular leakage correlates with breast carcinoma T regulatory cell infiltration but not with metastatic propensity

Molecular Oncology, EarlyView.
A mouse model for vascular normalization and a human breast cancer cohort were studied to understand the relationship between vascular leakage and tumor immune suppression. For this, endothelial and immune cell RNAseq, staining for vascular function, and immune cell profiling were employed.
Liqun He, Chiara Testini, Neda Hekmati, Altea Bonello, Aglaia Schiza, Emmanuel Nwadozi, Mia Phillipson, Carina Strell, Michael Welsh   +8 more
wiley   +1 more source

Signal path series step biased multidevice high efficiency amplifier Patent [PDF]

, 1971
High efficiency transformerless amplitude modulator coupled to RF power ...
Kubicz, A. P.
core   +1 more source

Flux-driven Josephson parametric amplifier for sub-GHz frequencies fabricated with side-wall passivated spacer junction technology

, 2018
We present experimental results on a Josephson parametric amplifier tailored for readout of ultra-sensitive thermal microwave detectors. In particular, we discuss the impact of fabrication details on the performance.
Grönberg, Leif, Hassel, Juha, Lehtinen, Janne, Prunnila, Mika, Simbierowicz, Slawomir, Vesterinen, Visa   +5 more
core   +1 more source