Results 141 to 150 of about 33,047 (316)

Termination of pregnancy for medical indications: A 14‐year analysis from a tertiary referral center

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective This study aimed to evaluate the medical indications for termination of pregnancy, gestational age at termination, and methods used in our clinic. Methods This observational retrospective study included pregnancy terminations after 10 weeks of gestation for medical indications between 2010 and 2024.
Yasemin Dogan   +5 more
wiley   +1 more source

Actuation of microstructures with spin-current volume effect

open access: yesCommunications Engineering
Microactuators are essential for advances in micro-optics, ultrasonic transducers and microsensors, and there is a growing demand for miniaturization and improved power.
Yi-Te Huang   +5 more
doaj   +1 more source

Warming enhances primary production and respiration and changes plankton community structure in an estuarine upwelling system

open access: yesLimnology and Oceanography, EarlyView.
Abstract Marine heatwaves are expected to become more frequent and intense due to global climate change, potentially impacting plankton communities. In the present study, the effects of a simulated short‐term warming event on the structure and functioning of coastal plankton communities were investigated during a mesocosm experiment conducted with ...
Tanguy Soulié   +8 more
wiley   +1 more source

High- and low-pressure pneumotachometers measure respiration rates accurately in adverse environments [PDF]

open access: yes, 1968
Respiration-rate transducers in the form of pneumotachometers measure respiration rates of pilots operating high performance research aircraft. In each low pressure or high pressure oxygen system a sensor is placed in series with the pilots oxygen supply
Fagot, R. J.   +2 more
core   +1 more source

The ICOS OTC pCO2 instrument intercomparison

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract In 2021, the Ocean Thematic Centre of the European Research Infrastructure “Integrated Carbon Observation System” conducted an international partial pressure of carbon dioxide (pCO2) instrument intercomparison. The goal was to understand how different types of instrumentation for the measurement of ocean pCO2 compare to each other.
Tobias Steinhoff   +41 more
wiley   +1 more source

Binary Pattern Classification with a Photonic Neuromorphic Device Based on Optical Receptrons

open access: yesLaser &Photonics Reviews, EarlyView.
Practical implementation of an array of optical receptrons for the classification of digital patterns through the exploitation of light random scattering and interference processes. Training is performed by an innovative random search protocol. Abstract Photonic systems for data processing are receiving increasing interest because of their potential to
Bruno Paroli   +4 more
wiley   +1 more source

Realization of Double-branch Split-torque Transmission System of Gearbox and Analysis of Its Rotor Dynamics

open access: yesJixie chuandong, 2020
The gearbox dual-branch torque transmission system is designed to increase the gearbox's carrying capacity and power density, and to solve the problems of high power,large torque and large transmission ratio in the gear transmission.
Geng Fuzhen   +3 more
doaj  

Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing

open access: yesLaser &Photonics Reviews, EarlyView.
Wavefront sensing constitutes a critical component of adaptive optics systems, aimed at quantitatively measuring distorted wavefronts and enabling closed‐loop correction in optical setups. Metasurfaces, as planar optical elements composed of nanoscale structures, provide exceptional freedom in modulating multiple dimensions of the light field.
Rundong Fan   +3 more
wiley   +1 more source

膜片联轴器锥面无键联接的有限元分析

open access: yesJixie chuandong, 2011
The structure and principle of cone connection without key in diaphragm coupling are introduced.The position where the maximum stress located in and the relation between prestressing force and the corresponding torque in cone connection with the analysis
易柳峰, 安源胜, 杜稳稳
doaj  

Comparison of cardiac diffusion MRI using multiple prospective respiratory motion correction techniques

open access: yesMagnetic Resonance in Medicine, EarlyView.
Abstract Purpose A novel prospective motion correction control system with slice tracking (MNav‐CoS) was compared with three other prospective respiratory motion correction techniques in performing free‐breathing cardiovascular diffusion tensor imaging (cDTI) acquisitions. Methods Ten healthy volunteers underwent cDTI using an M2SE sequence.
Stephen Jermy   +8 more
wiley   +1 more source

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