Results 61 to 70 of about 61,967 (224)
CFD simulations of turbulent flow in the human upper airways [PDF]
arXiv, 2017 In this paper, investigations are conducted using Reynolds-averaged Navier-Stokes (RANS) turbulence models to investigate the importance of turbulence modelling for nasal inspiration at a constant flow rate of 250 ml/s. Four different, standard turbulence models are tested in a model geometry based on pre-operative CT images of a selected obstructive ...
arxiv
Engineering ReportsAdenoid obstruction is a prevalent condition that can significantly alter nasal airflow patterns, leading to various respiratory symptoms. This study aims to explore the influence of adenoid obstruction on human nasal airflow using computational fluid ...
Zhengzheng Yan +2 more
doaj +1 more source
Evaluating the Effectiveness of Intranasal Estrogen on Nasal Obstruction in Menopausal Women: A Randomized Clinical Trial Study [PDF]
Majallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2023 Background and Objectives: Nasal obstruction is a common complaint in menopausal women. This study was conducted with the aim of investigating the effectiveness of intranasal estrogen on nasal obstruction in menopausal women.
Behrouz Barati +3 more
doaj
Semi-Automated Nasal PAP Mask Sizing using Facial Photographs [PDF]
, 2017 We present a semi-automated system for sizing nasal Positive Airway Pressure (PAP) masks based upon a neural network model that was trained with facial photographs of both PAP mask users and non-users. It demonstrated an accuracy of 72% in correctly sizing a mask and 96% accuracy sizing to within 1 mask size group.
arxiv +1 more source
European Annals of Otorhinolaryngology, Head and Neck Diseases, 2016 Nasal obstruction is a very frequent symptom in children, with numerous etiologies. Clinical diagnosis is straightforward, but general impact and rare etiologies should be explored for. Complementary examinations are guided by diagnostic orientation.
openaire +3 more sources
The impact of intranasal fluticasone on patients with obstructive sleep apnea: a prospective study
Brazilian Journal of Otorhinolaryngology, 2021 Introduction: Obstructive sleep apnea is the most common type of sleep apnea, which is caused by complete or partial obstructions of the upper airway. Nasal obstruction is also considered as one of the independent risk factors of obstructive sleep apnea.
Yuan-Yun Tam +3 more
doaj
Nasal obstruction in the newborn. [PDF]
Archives of Disease in Childhood, 1969 s of Papers read at 14th Meeting, Bristol, October 18-19, 1968 Nasal Obstruction in the ...
openaire +3 more sources
Evolution of CTAB/NaSal Micelles: Structural Analysis by SANS [PDF]
arXiv, 2018 Surfactants are amphiphilic molecules that spontaneously self-assemble in aqueous solution into various ordered and disordered phases. Under certain conditions, one-dimensional structures in the form of long, flexible wormlike micelles can develop. Cetyltrimethylammonium bromide (CTAB) is one of the most widely studied surfactants, and in the presence ...
arxiv
A rare cause of nasal obstruction: Frontochoanal polyp
Turkish Archives of Otorhinolaryngology, 2011 Forty-nine-years old male patient was admitted to our clinic with the complaint of nasal obstruction which is present for two years. The endoscopic examination and computerized paranasal sinus tomography revealed a polyploid mass which is originated from
Ömer Karakoç +4 more
doaj +1 more source
Computational Fluid Dynamic Application In Patients Suffering From Nasal Obstruction Due To Septal Deviation; A Review Article [PDF]
Reviews in Clinical MedicineBackground: Nasal airway obstruction (NAO) is a common symptom that affects a person's quality of life. It can be estimated by patient perception or by physical measurements.
Hamedreza Kafash +3 more
doaj +1 more source