Results 51 to 60 of about 434,174 (297)

Modeling and Inversion of Airborne and Semi-Airborne Transient Electromagnetic Data with Inexact Transmitter and Receiver Geometries

Remote Sensing, 2022
Airborne and semi-airborne transient electromagnetic (TEM) surveys have high efficiency but may suffer from systematic errors due to the inexact shape, position, and orientation of the transmitter and receiver, which can deviate from the nominal design ...
Tao Chen, Dikun Yang
doaj   +1 more source

Miniature implantable instrument measures and transmits heart function data [PDF]

, 1971
Heart diameter is derived from measured transit time of 2.25 MHz ultrasonic pulse between two piezoelectric crystals attached to diametrically opposite heart surfaces.
Lee, R. D.
core   +1 more source

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim, Natalie Bradford, David Brain, Sameera Senanayake, Sanjeewa Kularatna, Kate Young, Christine Cashion, Tim Hassall, Susanna Cramb   +8 more
wiley   +1 more source

Experimental and computational assessment of the heat transfer exchange in evacuated tube receiver using helical external fins

International Journal of Thermofluids
This study examines the performance of solar thermal systems with a longitudinal finned tube, utilizing both experimental and computational fluid dynamics (CFD) methods.
Ameer R. Kalash, Nabil J. Yasin
doaj   +1 more source

The external ears as receiving antennas in echolocating bats [PDF]

The Journal of the Acoustical Society of America, 1982
The external ears of bats appear to vary greatly in size and shape, but they in fact have dimensions specifically related to the structure of sonar sounds in different species. They determine the directionality of hearing and produce cues for vertical target localization.
openaire   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Development and validation of a new scoring system to discriminate between uncomplicated and complicated appendicitis

Scientific Reports
A scoring system to discriminate between uncomplicated and complicated appendicitis is beneficial to determine the optimal treatment for acute appendicitis.
Mikito Mori, Kiyohiko Shuto, Chihiro Kosugi, Kazuo Narushima, Atsushi Hirano, Akihiro Usui, Hiroyuki Nojima, Mihono Hirota, Tetsutaro Sazuka, Masato Yamazaki, Takashi Fujino, Kazuto Yamazaki, Hiroaki Shimizu, Keiji Koda   +13 more
doaj   +1 more source

Performance Assessment and Improvement of Central Receivers Used for Solar Thermal Plants

Energies, 2019
In this work, the energy status and supply plans of Saudi Arabia are discussed with a focus on concentrated solar power (CSP) technologies. Subsequently, optimal designs for a 20 MWe solar power plant external receiver, combined with a 15 h thermal ...
Alhussein Albarbar, Abdullah Arar
doaj   +1 more source

Miniature modular microwave end-to-end receiver [PDF]

, 1993
An end-to-end microwave receiver system contained in a single miniature hybrid package mounted on a single heatsink is presented. It includes an input end connected to a microwave receiver antenna and an output end which produces a digital count ...
Cooley, Thomas W., Janssen, Michael A., Parks, Gary S., Sukamto, Lin M.   +3 more
core   +1 more source

Adiabatic quantum state transfer in non-uniform triple-quantum-dot system

, 2010
We introduce an adiabatic quantum state transfer scheme in a non-uniform coupled triple-quantum-dot system. By adiabatically varying the external gate voltage applied on the sender and receiver, the electron can be transferred between them with high ...
A. Messiah, Bing Chen, Wei Fan, Yan Xu
core   +1 more source