نتایج جستجو برای: air trapping

تعداد نتایج: 226035  

Journal: :Nanoscale research letters 2016
Jiantao Li Aiwei Tang Xu Li Miao Wang Yufeng Hu Yanbing Hou Feng Teng

An organic/inorganic bistable device is fabricated by using a simple spin-coating technique, in which the hybrid silver sulfide (Ag2S) poly(N-vinylcarbazole) (PVK) nanocomposite film is sandwiched between two electrodes. An obvious electrical hysteresis is observed in the current-voltage (I-V) curve of the device measured in the presence of different oxygen concentrations, and the magnitude of ...

2015
Yuki Saito Shin Matsuoka Tsuneo Yamashiro Shoichiro Matsushita Akiyuki Kotoku Kunihiro Yagihashi Hayato Tomita Shingo Sakamoto Shinji Saruya Yasuo Nakajima

Objective: The purpose of this study was to evaluate the effect of radiation dose reduction on the quantification of air trapping on expiratory CT. Materials and methods: This study was conducted as a retrospective evaluation of inspiratory and expiratory CT studies performed in routine clinical practice before and after alteration of the scanning protocol for expiratory CT at our institute. Ei...

Journal: :British journal of industrial medicine 1992
J H Auchincloss J L Abraham R Gilbert M Lax P K Henneberger E R Heitzman D J Peppi

Forty two of 125 former workers in a factory in Syracuse, New York, which manufactured hard metal parts from tungsten carbide and cobalt, were studied by chest radiographs, spirometry, and plethysmographically determined lung volumes. The plant was closed in 1982 and the studies were performed in 1983-5. Recorded measurements of carbide dust concentrations were only mildly excessive by modern s...

2017
D. Paul Vincent

Vesical explosion during transurethral resection of the prostate (TURP) is a very rare occurrence. Very few cases have been reported in the literature. The literature was reviewed pertaining to the etiology of bladder explosion during transurethral resection. The underlying mechanism for intravesical explosion is the generation and trapping of explosive gasses under the dome of the bladder whic...

2016
Jantina C. de Groot Huib Storm Marijke Amelink Selma B. de Nijs Edwin Eichhorn Bennie H. Reitsma Elisabeth H.D. Bel Anneke ten Brinke

Adult-onset eosinophilic asthma is increasingly recognised as a severe and difficult-to-treat subtype of asthma. In clinical practice, early recognition of patients with this asthma subtype is important because it may have treatment implications. Therefore, physicians need to know the distinct characteristics of this asthma phenotype. The objective of the present study was to determine the char...

Journal: :The British journal of radiology 2016
Betina Scheeren Edson Marchiori Jorge Pereira Gustavo Meirelles Giordano Alves Bruno Hochhegger

OBJECTIVE To demonstrate CT findings in patients with chronic aspiration compared with a control group without aspiration, as detected by the videofluoroscopic swallowing study (VFSS). METHODS This retrospective, observational study included patients with and without diagnoses of aspiration confirmed by VFSS, who underwent CT examination of the lungs between 2010 and 2014. Two radiologists bl...

Journal: :Pediatric pulmonology 2015
Benjamin T Kopp Lisa Sarzynski Sabrina Khalfoun Don Hayes Rohan Thompson Lisa Nicholson Frederick Long Robert Castile Judith Groner

RATIONALE Secondhand smoke (SHS) has deleterious respiratory, immune, and nutritional effects in children, but there is little data regarding the effects of SHS exposure in infants with cystic fibrosis (CF). METHODS A retrospective chart review was undertaken from 2008 to 2012 of 75 infants with CF. Growth, lung function, Chest CT imaging, and microbiologic characteristics were compared betwe...

2016
Esther Pompe Pim A de Jong Eva M van Rikxoort Leticia Gallardo Estrella Werner U de Jong Rozemarijn Vliegenthart Matthijs Oudkerk Carlijn M van der Aalst Bram van Ginneken Jan-Willem J Lammers Firdaus AA Mohamed Hoesein

Osteoporosis is more common in patients with COPD and in smokers. The aim of this study was to assess whether measures of emphysema and airway disease on computed tomography (CT) were associated with lower bone density or vertebral fractures in smokers with and without COPD. For this purpose, we included participants from the NELSON lung cancer screening trial. Bone density was measured as Houn...

2014
Harpreet Singh Grewal

Aims & Objectives: To review the clinical presentation and imaging findings in a rare case of Swyer James Syndrome Materials & Methods: A 50 year old male patient presented with complaints of exertional dyspnea, cough with expectoration for the past three months. Detailed history revealed similar dyspnea episodes since childhood. Result: Patient underwent HRCT Thorax which revealed unilateral r...

2014
Fang Liang Jorge Lehr Lisa Danielczak Richard Leask Anne-Marie Kietzig

Nature shows many examples of surfaces with extraordinary wettability,which can often be associated with particular air-trapping surface patterns. Here,robust non-wetting surfaces have been created by femtosecond laser ablation of polytetrafluoroethylene (PTFE). The laser-created surface structure resembles a forest of entangled fibers, which support structural superhydrophobicity even when the...

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