Results 91 to 100 of about 146,973 (259)
Rotational Doppler Effect of Vector Beams
PhotonicsThe optical rotational Doppler effect occurs when vortex beams are scattered by rotating objects and demonstrate the Doppler frequency shifts in scattered beams, which are associated with the optical angular momentum of vortex beams and the relative ...
Hehe Li, Dong Xu, Xinzhong Li
doaj +1 more source
Numerical investigation of laminar flow in micro-tubes with designed surface roughness
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Elsayed, AM +4 more
core
Renal screening sonography—A comparative study in a Portuguese basic emergency service
Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 8-16, March 2025.Renal sonography screening aids in clinical decision‐making for patients with suspected renal colic. This study intends to compare the accuracy and pertinence of sonographic findings obtained by a sonographer in a Basic Emergency Service (BES) with that of radiologists at Referral Hospital (RH) in Portugal. Renal sonography screening was able to detect
Sérgio Miravent +9 more
wiley +1 more source
Portal Hypertension &Cirrhosis, EarlyView.ABSTRACT Accurate differentiation between benign and malignant focal liver lesions (FLLs) remains a major diagnostic challenge. Vasomics, an emerging discipline, classifies vascular phenotypes into anatomical, biomechanical, biochemical, pathophysiological, and composite categories. Sono‐Vasomics, the ultrasound‐based subset, leverages super‐resolution
Yijie Qiu +5 more
wiley +1 more source
The development of an ultrasonic Doppler bed-load velocimeter
, 1989 Includes bibliography.A instrument has been developed for measuring the velocity of solid particles adjacent to the pipe wall in a solids-liquid pipeline.
Lazarus, Mark Doron
core
Doppler-Raman crossover in resonant scattering
, 2020 We consider theoretically light scattering by a resonant layer that periodically moves in real space. At small frequencies of motion the scattered light spectrum reveals the frequency shift that is governed by the Doppler effect.
A. V. Poshakinskiy (17493162) +2 more
core +1 more source
A methodology for shrinkage measurement in micro-injection moulding [PDF]
, 2013 The aim of this paper is to provide a method for measuring shrinkage in micro injection moulded (μ-IM) parts - no standardised approach being reported as yet in the literature.
Alcock, Jeffrey R. +2 more
core +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.Using S‐band dual‐polarization radar and disdrometers during PRECIP 2022 in Taiwan, we analyze a Mei‐Yu frontal event with widespread stratiform rain and embedded convection. Multiple disdrometers are used to create a novel drop size distribution model for S‐band radars resolving both the drizzle and precipitation modes. The model reveals both inferred
Ian C. Cornejo +3 more
wiley +1 more source
An operational risk assessment method for petrochemical plants based on deep learning
Frontiers in Energy ResearchThe petrochemical industry is an important guarantee for the development of people’s lives, and the operational risk assessment method of personnel in the operation of petrochemical enterprises is the most important. Based on a deep learning algorithm, a
Zhipeng Liu
doaj +1 more source
Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning
Journal of Field Robotics, EarlyView.ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi +3 more
wiley +1 more source