Results 31 to 40 of about 1,346,635 (301)

Mode dispersion and delay characteristics of optical waveguides using equivalent TL circuits [PDF]

open access: yes, 2005
A new analysis leading to an exact and efficient algorithm is presented for calculating directly and without numerical differentiation the mode dispersion characteristics of cylindrical dielectric waveguides of arbitrary refractive-index profile. The new
Boucouvalas, Anthony C.   +3 more
core   +2 more sources

A New Model of Ultrasonic Guided Wave Propagation in Blood Vessels and Its Propagation Characteristics

open access: yesApplied Sciences, 2023
The identification of a blood vessel’s elastic properties by an ultrasonic guided wave mainly depends on the accurate propagation characteristics, which are obtained by solving the problem of elastic mechanics based on a thin-plate model.
Kehua Sun   +5 more
doaj   +1 more source

Regulation Mechanism of the Shock Waves in a Pentamode Lattice-Ring Structure Subjected to Collision

open access: yesCrystals, 2022
This paper hopes to explore the application potential of pentamode materials in the field of shock protection. Hammer percussion tests revealed that the peak strain of the inner-ring front shock surface of the pentamode lattice-ring structure is 103.9 ...
Zhenhua Zhang, Bangyi Han
doaj   +1 more source

Dispersion in oscillatory flows [PDF]

open access: yes, 1983
The enhanced axial mixing which is caused by dispersion in oscillatory flows in some mass transfer devices may limit the reactor performance. This effect has provided the motivation for the present study in which oscillatory flow dispersion in a flat ...
Stairmand, John W., Stairmand, J. W.
core   +1 more source

Turbulent dispersion in cloud-topped boundary layers [PDF]

open access: yes, 2009
Compared to dry boundary layers, dispersion in cloud-topped boundary layers has received less attention. In this LES based numerical study we investigate the dispersion of a passive tracer in the form of Lagrangian particles for four kinds of atmospheric
Vilà-Guerau de Arellano, J. (author)   +11 more
core   +3 more sources

Study on Time-frequency Imaging of Ultrasonic Detection with Phase Shifted Fiber Bragg Grating Sensing

open access: yesMeasurement Science Review, 2023
The influence of the wavelength difference between the laser source and the phase-shifted fiber Bragg grating (PS-FBG) on the intensity of the power demodulation system based on an adjustable laser source was studied experimentally, and the optimum of ...
Meng Lijun, Tan Xin, Yu Quanquan
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Curve under construction, 2006

open access: yes, 2006
Curve begins to take shape, with the Exchange Buildings visible in the background.
Hyde, Colin;
core   +2 more sources

A Highly Compact ZOR based on CRLH TL [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2017
Design and development of a highly compact zeroth order resonator (ZOR) based on composite right/left handed transmission line (CRLH TL) is reported in this paper. The ZOR is based on single unit-cell CRLH TL.
UPADHYAY Dileep Kumar
doaj  

Infant Embryonal CNS Tumors: Molecular Insights and Treatment Considerations for Contemporary Pediatric Neuro‐Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Embryonal tumors comprise the majority of malignant central nervous system (CNS) neoplasms diagnosed in children under 3 years of age. Compared with their counterparts in older children, these tumors exhibit distinct molecular biology and a more aggressive clinical phenotype, while their management is complicated by the heightened ...
Sudarshawn Damodharan   +3 more
wiley   +1 more source

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