Results 21 to 30 of about 1,833,405 (189)

O epitélio respiratório em ratos Wistar nascidos em ruído de baixa frequência e expostos a ruído adicional

open access: yesRevista Portuguesa de Pneumologia, 2003
RESUMO: A exposição ao ruído de baixa frequência (RBF) (≤500 Hz, incluindo os infra-sons) provoca lesões no epitélio do aparelho respiratório.
Nuno A.A. Castelo Branco   +4 more
doaj   +1 more source

Participação das vias aéreas centrais na doença vibroacústica

open access: yesRevista Portuguesa de Pneumologia, 2006
Resumo: Nos últimos vinte cinco anos constatou-se que o aparelho respiratório constitui um alvo do ruído de baixa frequência (RFB
José Reis Ferreira   +7 more
doaj   +1 more source

Carcinomas epidermóides do pulmão na doença vibroacústica

open access: yesRevista Portuguesa de Pneumologia, 2006
Resumo: Enquadramento: Em 1987, observou-se durante a autópsia de um doente com doença vibroacústica (VAD) dois tumores: Um carcinoma de células renais e um glioma maligno cerebral. Desde 1987, temse vigiado o aparecimento de tumores em doentes com a VAD.
José Reis Ferreira   +3 more
doaj   +1 more source

Approximation operators and accuracy measures of rough sets from an infra-topology view

open access: yesSoft Computing - A Fusion of Foundations, Methodologies and Applications, 2022
In this work, our target point is to focus on rough approximation operators generated from infra-topology spaces and examine their features. First, we show how infra-topology spaces are constructed from $$N_j$$ N j -neighborhood systems under an ...
T. Al-shami, A. Mhemdi
semanticscholar   +1 more source

Preliminary findings of selective endovascular repair for infra-renal abdominal aortic aneurysm at Viet Duc University Hospital

open access: yesTạp chí Phẫu thuật Tim mạch và Lồng ngực Việt Nam, 2023
Objectives: To evaluate the early result of EVAR in abdominal aorta aneurysm patients in Viet Duc university hospital from 01/01/2018 to 30/12/2021. Methods: Descriptive and retrospective study with convenience sampling.
Phung Duy Hong Sơn   +4 more
semanticscholar   +1 more source

The enigma of infra-slow fluctuations in the human EEG

open access: yesFrontiers in Human Neuroscience, 2022
Spontaneous Infra-Slow Fluctuations (ISFs) of the human EEG (EEG-ISFs) were discovered 60 years ago when appropriate amplifiers for their recordings were designed.
J. Kropotov
semanticscholar   +1 more source

A Novel Fuzzy Structure: Infra-Fuzzy Topological Spaces

open access: yesJournal of Function Spaces, 2022
Obtaining a weaker condition that preserves some inspired topological properties is always desirable. As a result, we introduce the concept of infra-fuzzy topology, which is a subset family that degrades the concept of fuzzy topology by omitting the ...
Z. Ameen   +3 more
semanticscholar   +1 more source

Effectiveness of beta-tricalcium phosphate in comparison with other materials in treating periodontal infra-bony defects around natural teeth: a systematic review and meta-analysis

open access: yesBMC Oral Health, 2021
Background Beta-tricalcium phosphate in regenerative surgery has shown promising results in terms of bone gain and new vital bone formation; however, several studies have contradicted this finding.
Reham Al Jasser   +2 more
semanticscholar   +1 more source

O ENSINO DE ACÚSTICA NOS LIVROS DIDÁTICOS DE FÍSICA RECOMENDADOS PELO PNLEM: ANÁLISE DAS LIGAÇÕES ENTRE A FÍSICA E O MUNDO DO SOM E DA MÚSICA [PDF]

open access: yes, 2011
No presente artigo apresentamos uma análise dos conteúdos de acústica presentes nos livros didáticos de física recomendados pelo Programa Nacional do Livro Didático para o Ensino Médio - PNLEM, na qual utilizamos os mesmos critérios da ficha de avaliação
Carvalho, Washington Luiz Pacheco de   +1 more
core   +2 more sources

New Soft Structure: Infra Soft Topological Spaces

open access: yesMathematical Problems in Engineering, 2021
It is always convenient to find the weakest conditions that preserve some topologically inspired properties. To this end, we introduce the concept of an infra soft topology which is a collection of subsets that extend the concept of soft topology by ...
T. Al-shami
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy