Results 11 to 20 of about 6,312,933 (292)

Influence of Dielectric Plate Parameters on the Reflection Coefficient of a Planar Aperture Antenna

open access: yesApplied Sciences, 2023
In this article, an aperture antenna excited by a waveguide with a circular cross-section and covered with a dielectric plate was analyzed via simulation calculation and verified via measurements.
Vanja Mandrić   +3 more
doaj   +1 more source

Rheumatoid Factor and Hearing Loss [PDF]

open access: yesIndian Journal of Otolaryngology and Head & Neck Surgery, 2011
To find out the association between rheumatoid factor and hearing loss, a prospective study was conducted at Tertiary care/Medical college hospital. We screened 85 patients with positive rheumatoid factor for evidence of hearing loss. These patients were collected from the Departments of Medicine and Orthopedics.
V, Ashok Murthy, J, Mohan Kumar
openaire   +2 more sources

"Research Progress on modification method of nitrile rubber damping materials"

open access: yesHecheng xiangjiao gongye, 2022
The application of nitrile rubber in the field of damping was introduced and the commonly used modification methods and mechanisms of nitrile rubber such as blending, copolymerization, filler addition and organic small molecule hybridization were ...
WANG Qing-xin, LI Yu, XIN Jie, LI Shuai-jie
doaj   +1 more source

Economic factors underlying biodiversity loss

open access: yesPhilosophical Transactions of the Royal Society B, 2023
Abstract Contemporary economic thinking does not acknowledge that the human economy is embedded in Nature; it instead treats humanity as a customer that draws on Nature. In this paper, we present a grammar for economic reasoning that is not built on that error.
Partha Dasgupta, Simon Levin
openaire   +3 more sources

Influence of Structural Stiffness and Loss Factor on Railroad Vehicle Comfort

open access: yesApplied Sciences, 2021
This paper presents a new formulation for analyzing a beam on elastic supports traveling on irregular profiles. The model is a first approximation of a passenger railway vehicle car body.
Publio Pintado   +5 more
doaj   +1 more source

Combined Effect of Temperature and Oil and Salt Contents on the Variation of Dielectric Properties of a Tomato-Based Homogenate

open access: yesFoods, 2021
Tomato-based processed foods are a key component of modern diets, usually combined with salt and olive oil in different ratios. For the design of radiofrequency (RF) and microwave (MW) heating processes of tomato-based products, it is of importance to ...
Andres Abea   +4 more
doaj   +1 more source

Predictive Factors for Vestibular Loss in Children With Hearing Loss [PDF]

open access: yesAmerican Journal of Audiology, 2018
Purpose The aim of this study was to determine if there are factors that can predict whether a child with hearing loss will also have vestibular loss. Method A retrospective chart review was completed on 186 children with hearing loss seen at Boys Town National Research Hospital for
Kristen L, Janky   +4 more
openaire   +2 more sources

Uterine factors in recurrent pregnancy losses [PDF]

open access: yesFertility and Sterility, 2021
Congenital and acquired uterine anomalies are associated with recurrent pregnancy loss (RPL). Relevant congenital Müllerian tract anomalies include unicornuate, bicornuate septate, and arcuate uterus. Recurrent pregnancy loss has also been associated with acquired uterine abnormalities that distort the uterine cavity such as, notably, intrauterine ...
Carbonnel, Marie   +3 more
openaire   +3 more sources

"Application of carbon black modified cis-1,4-polybutadiene rubber

open access: yesHecheng xiangjiao gongye, 2022
The effects of common cis-1,4-polybutadiene rubber (BR), BR prepared from neodymium catalyst system and carbon black modified BR on sidewall compound properties were investigated by adding different BR to sidewall compound of passenger car radial tire ...
XU Wen-long, GONG Ting-ting, XU Qi, LI Chong-bing
doaj   +1 more source

Improvement of Milling Stable Processing Condition for a Cutter With Large Ratio of Length to Diameter

open access: yesIEEE Access, 2020
In order to machine complex box and shell structures, the cutter with large ratio of length to diameter is usually used, whereas the low rigidity of the cutter hinders the increase of the stable machining parameters.
Yan Xia   +6 more
doaj   +1 more source

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