Literatura científica selecionada sobre o tema "Lungs"

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Artigos de revistas sobre o assunto "Lungs"

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Gautam, Ajeevan, Rajib Chaulagain, and Deepesh Dhungel. "Morphological Variations of the Lungs: A Cadaveric Study." Nepal Medical College Journal 23, no. 4 (2021): 315–18. http://dx.doi.org/10.3126/nmcj.v23i4.42221.

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The lungs are the organs of respiration which are situated on either side of the heart and other mediastinal contents in its pleural cavity. A fresh lung is spongy, can float in water and crepitates when handled. Lungs are important with respect to its blood circulation. The lungs are divided by fissures into lobes which facilitate movements of lobes in relation to one another. The hilum of each lung is its gateway. In the present study, we aim to assess the morphological variations of human cadaveric lungs at Chitwan Medical College (CMC). An observational study was conducted at dissection ha
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Koch, Achim, Nikolaus Pizanis, Carolin Olbertz, et al. "One-year experience with ex vivo lung perfusion: Preliminary results from a single center." International Journal of Artificial Organs 41, no. 8 (2018): 460–66. http://dx.doi.org/10.1177/0391398818783391.

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Objective: To enlarge the donor pool for lung transplantation, an increasing number of extended criteria donor lungs are used. However, in more than 50% of multi-organ donors the lungs are not used. Ex vivo lung perfusion offers a unique possibility to evaluate and eventually recondition the injured donor lungs. The aim of our study was to assess the enlargement of the donor pool and the outcome with extended criteria donor lungs after ex vivo lung perfusion. Patients and Methods: Data were prospectively collected in our lung transplant database. We compared the results of lung transplants aft
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Yablonskiy, Dmitriy A., Alexander L. Sukstanskii, Jason C. Woods, et al. "Quantification of lung microstructure with hyperpolarized 3He diffusion MRI." Journal of Applied Physiology 107, no. 4 (2009): 1258–65. http://dx.doi.org/10.1152/japplphysiol.00386.2009.

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The structure and integrity of pulmonary acinar airways and their changes in different diseases are of great importance and interest to a broad range of physiologists and clinicians. The introduction of hyperpolarized gases has opened a door to in vivo studies of lungs with MRI. In this study we demonstrate that MRI-based measurements of hyperpolarized 3He diffusivity in human lungs yield quantitative information on the value and spatial distribution of lung parenchyma surface-to-volume ratio, number of alveoli per unit lung volume, mean linear intercept, and acinar airway radii—parameters tha
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James, A., G. Pearce-Pinto, and D. Hillman. "Effects of lung volume and surface forces on maximal airway smooth muscle shortening." Journal of Applied Physiology 77, no. 4 (1994): 1755–62. http://dx.doi.org/10.1152/jappl.1994.77.4.1755.

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The effects of lung volume and surface forces on airway smooth muscle shortening were studied in isolated perfused rat lungs. The lungs were inflated via the trachea with gas or Krebs solution (n = 12 each) to volumes equivalent to gas inflation pressures of 5 (low), 15 (medium), and 25 (high) cmH2O (n = 4 each). At each volume, two of the four lungs were perfused with methacholine (10(-2) M) and then all were perfused with Formalin for fixation. The amount of smooth muscle shortening present in transverse sections of the airways was determined by comparing the observed outer perimeter of the
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Rakhmonova, H.N, S.M Mukhitdinova, and F.Z Rakhmonov. "MORPHOLOGICAL STRUCTURE OF NEUROEPITHELIAL CELLS IN RABBIT LUNGS." Journal of Science-Innovative Research in Uzbekistan 2, no. 2 (2024): 153–56. https://doi.org/10.5281/zenodo.10645714.

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The morphofunctional features of NET in the developing respiratory lung have been studied. Lungs of 23 rabbits aged 1-30 days served as a material for the study. Paraffin sections were stained with hematoxylin and eosin, according to the Van-Gizon method, impregnated according to the Grimelius method. Histochemical detection of acetylcholinesterase (AChE) activity was carried out on frozen sections of unfixed lungs by the method of M. Karnovsky and L. Roots. The study allowed to establish that in the rabbit lung NET cells are detected in the respiratory secti
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Hass, M. A., and D. Massaro. "Differences in CuZn superoxide dismutase induction in lungs of neonatal and adult rats." American Journal of Physiology-Cell Physiology 253, no. 1 (1987): C66—C70. http://dx.doi.org/10.1152/ajpcell.1987.253.1.c66.

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The failure of adult rats to survive prolonged exposure to greater than 95% O2 is generally ascribed to the inability of their lungs to increase antioxidant enzyme synthesis in response to the oxidant challenge. We studied the synthesis rate of the antioxidant enzyme CuZn superoxide dismutase (CuZn SOD) in lungs of adult and neonatal rats exposed to conditions that alter the lung's oxidant-to-antioxidant balance. Lung CuZn SOD synthesis in the adult was significantly increased after 24 h of hyperoxia but fell to control levels after further exposure, whereas in neonatal lungs an increased rate
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Stettler, L. E., S. F. Platek, D. H. Groth, F. H. Y. Green, and V. Vallyathan. "Particle Contents of Human Lungs." Proceedings, annual meeting, Electron Microscopy Society of America 43 (August 1985): 116–19. http://dx.doi.org/10.1017/s0424820100117595.

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Scanning electron microscopy (SEM) and energy dispersive x-ray analysis (EDXA) have been used by numerous investigators to study the particle content of human lungs. Most of this work has been performed on lung specimens from subjects with known or suspected lung diseases. The object of these analyses has been an attempt to relate the composition and concentration of the particles present in the lungs to the lung disease. A major factor missing from past microanalysis work has been data from typical “normal” lungs with which the analyses of diseased lungs could be compared. Currently in progre
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Szpinda, Michał, Waldemar Siedlaczek, Anna Szpinda, Alina Woźniak, Celestyna Mila-Kierzenkowska, and Mateusz Badura. "Quantitative Anatomy of the Growing Lungs in the Human Fetus." BioMed Research International 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/362781.

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Using anatomical, digital, and statistical methods we examined the three-dimensional growth of the lungs in 67 human fetuses aged 16–25 weeks. The lung dimensions revealed no sex differences. The transverse and sagittal diameters and the base circumference were greater in the right lungs while the lengths of anterior and posterior margins and the lung height were greater in the left lungs. The best-fit curves for all the lung parameters were natural logarithmic models. The transverse-to-sagittal diameter ratio remained stable and averaged0.56±0.08and0.52±0.08for the right and left lungs, respe
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Ahn, So Yoon, Dong Kyung Sung, Yun Sil Chang, and Won Soon Park. "Intratracheal Transplantation of Mesenchymal Stem Cells Attenuates Hyperoxia-Induced Microbial Dysbiosis in the Lungs, Brain, and Gut in Newborn Rats." International Journal of Molecular Sciences 23, no. 12 (2022): 6601. http://dx.doi.org/10.3390/ijms23126601.

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We attempted to determine whether intratracheal (IT) transplantation of mesenchymal stem cells (MSCs) could simultaneously attenuate hyperoxia-induced lung injuries and microbial dysbiosis of the lungs, brain, and gut in newborn rats. Newborn rats were exposed to hyperoxia (90% oxygen) for 14 days. Human umbilical cord blood-derived MSCs (5 × 105) were transplanted via the IT route on postnatal day (P) five. At P14, the lungs were harvested for histological, biochemical, and microbiome analyses. Bacterial 16S ribosomal RNA genes from the lungs, brain, and large intestine were amplified, pyrose
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Kanaujea, Savita, Arvind Kumar Pankaj, Kaweri Dande, Sehra Jabeen, and Navneet Kumar. "Morphological and morphometric analysis of lung: A cadaveric study." Asian Journal of Medical Sciences 15, no. 3 (2024): 88–93. http://dx.doi.org/10.3126/ajms.v15i3.59845.

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Background: The lung is a respiratory organ in which steady development begins during the embryonic period at 0–7 weeks’ gestation and continues into early childhood. Cardiothoracic surgeries and procedures such as lobectomy, segmental resection of bronchoscopy, require a thorough knowledge of the anatomy of the lung. Study of length, fissures and lobes of the lung can guide the surgeons for the above procedures and help them to prevent undue complications during surgery. Many variations are noted by researchers till date in both the lungs in regards to length, breadth, fissures, and lobes. In
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Teses / dissertações sobre o assunto "Lungs"

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Eriksson, Leif. "Lung transplantation clinical and experimental studies /." Lund : Depts. of Cardiothoracic Surgery, Respiratory Medicine and Clinical Physiology, University of Lund, 1998. http://catalog.hathitrust.org/api/volumes/oclc/39068785.html.

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McLennan, Geoffrey. "Oxygen toxicity and radiation injury to the pulmonary system." Title page, index and forward only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phm164.pdf.

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Bibliography: leaves 168-184. The work in this study encompasses oxygen free radical related inflammation in the peripheral lung and in lung cells. Animal and human studies have been used. Methods include cell culture with function studies, protein chemistry, animal and human physiology, and cell and lung structure through histopathology, and various forms of electron microscopy. The work resulting from this thesis has formed an important basis for understanding acute and chronic lung injury.
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Merriman, Carolyn. "Thorax and Lungs." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/8532.

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Chan, Kan-kam. "Disablement, power resources and powerlessness of silicotic patients in Hong Kong /." Hong Kong : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13990974.

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Wong, Pui-sze. "The lived experience of Hong Kong Chinese men undergoing radiotherapy to treat lung cancer /." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38296251.

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Arrowood, Tamara Marie. "Long-term follow-up of exercise rehabilitation outcomes in patients with chronic obstructive pulmonary disease." Electronic thesis, 2002. http://dspace.zsr.wfu.edu/jspui/handle/10339/223.

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Johansson, Soller Maria. "Cytogenetic studies of lung tumors." Lund : Dept. of Clinical Genetics, University of Lund, 1994. http://catalog.hathitrust.org/api/volumes/oclc/39068855.html.

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Irving, Samantha. "Gas mixing in the lungs of children with obstructive lung disease." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/25402.

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Introduction: CF (cystic fibrosis) and PCD (primary ciliary dyskinesia) are obstructive airway diseases characterised by frequent infections and neutrophilic inflammation. However, PCD has a much milder course than CF. Pilot data showed that in PCD (n=8) the relationship between LCI (lung clearance index) derived from multiple breath washout (MBW), and FEV1 (forced expiratory volume in 1 second) differed from the established correlation in CF. This thesis sought to identify the reasons. Materials and Methods: Larger PCD (n=38) and CF cohorts (n=125), a non-CF bronchiectasis comparator group (n
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Garrad, E. Philippa. "The effects of temperature change and lung expansion on lung liquid production in in vitro preparations of lungs from fetal guinea pigs (Cavia porcellus)." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28989.

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This study examined the effects of lung expansion and changes in temperature on fluid movement by the lungs in the initial period after birth. In addition, experiments with amiloride support the belief that fluid reabsorption acts via a sodium transport mechanism. Lungs from fetal guinea pigs (56-67 days of gestation) were supported in vitro for three hours, and lung liquid production rates were measured using a dye dilution technique. The average production rate in the first hour of untreated preparations was 1.30 ±0.22 ml/kg body weight per hour, and this did not change significantly during
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Roberts, Della Kim. "The family experience with chronic obstructive pulmonary disease." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24422.

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This study was designed to gain an understanding of the family experience when an adult member has chronic obstructive pulmonary disease (COPD). It is recognized that illness within the family affects the well-being of the family unit and the health of all members. To understand the impact of COPD upon the family, however, the literature provides only knowledge of the experience of the individual who has COPD and the spouse, not that of the family unit. Thus, the purpose of this study was to describe and explain the COPD experience from the perspective of the family unit. A qualitative method
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Livros sobre o assunto "Lungs"

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B, Corrin, ed. The Lungs. 3rd ed. Churchill Livingstone, 1990.

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Parker, Steve. Lungs. Copper Beech Books, 1996.

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Machine, Florence +. the. Lungs. Universal Island Records, 2010.

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Caster, Shannon. Lungs. PowerKids Press, 2010.

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R, Banner Nicholas, Polak Julia M, and Yacoub Magdi, eds. Lung transplantation. Cambridge University Press, 2003.

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H, Dail David, and Hammar Samuel P, eds. Pulmonary pathology. 2nd ed. Springer-Verlag, 1994.

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Leslie, Kevin O. Practical pulmonary pathology: A diagnostic approach. 2nd ed. Saunders, 2011.

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N, Sheppard Mary, ed. Practical pulmonary pathology. E. Arnold, 1995.

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Ylvisaker, Anne. Your lungs. Bridgestone Books, 2002.

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Ross, Veronica. The lungs. Chrysalis Education, 2004.

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Capítulos de livros sobre o assunto "Lungs"

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Hughes, Graham, and Shirish Sangle. "Lungs." In Hughes Syndrome: The Antiphospholipid Syndrome. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-739-6_15.

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Hruban, Ralph H., William H. Westra, Timothy H. Phelps, and Christina Isacson. "Lungs." In Surgical Pathology Dissection. Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4757-2548-3_17.

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Hughes, Graham, Shirish Sangle, and Simon Bowman. "Lungs." In Sjögren’s Syndrome in Clinical Practice. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06059-0_4.

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Goltra, Peter S. "Lungs." In Medcin. Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-2286-6_35.

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Treves, S. T., and A. B. Packard. "Lungs." In Pediatric Nuclear Medicine. Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4757-4205-3_11.

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Pato, Michele T. "Lungs." In Nerve. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33433-7_16.

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Westra, William H., Timothy H. Phelps, Ralph H. Hruban, and Christina Isacson. "Lungs." In Surgical Pathology Dissection. Springer New York, 2003. http://dx.doi.org/10.1007/0-387-21747-9_20.

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Oates, M. Elizabeth, and Vincent L. Sorrell. "Lungs." In Myocardial Perfusion Imaging - Beyond the Left Ventricle. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-25436-4_10.

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Hughes, Graham, and Munther A. Khamashta. "Lungs." In Hughes Syndrome: Highways and Byways. Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5161-6_8.

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Kohli, Vinay Kumar, Chitra Kohli, and Akanksha Singh. "Lungs." In Comprehensive Multiple-Choice Questions in Pathology. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08767-7_9.

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Trabalhos de conferências sobre o assunto "Lungs"

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Nisar, Hareem, Abhijeet Parida, Syed Muhammad Anwar, Gustavo Nino, Maria C. Rujana, and Marius George Linguraru. "Tiny Lungs, Big Challenges: Pediatric and Premature Lung Segmentation using Deep Learning." In 2024 20th International Symposium on Medical Information Processing and Analysis (SIPAIM). IEEE, 2024. https://doi.org/10.1109/sipaim62974.2024.10783643.

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Schinstock, Emma, Alex Deakyne, Tinen Iles, Andrew Shaffer, and Paul A. Iaizzo. "Lung Allocation Pipeline: Machine Learning Approach to Optimized Lung Transplant." In 2020 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dmd2020-9030.

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Abstract Lung donation is the most risky transplant procedures. With low survival rates, and poor acceptance of donated lungs, those in need of a lung transplant are at high risk of dying. One reason for poor outcomes is the lack of optimal match between donor and recipient when it comes to lung size and shape. Lungs that do not properly fit in the recipient’s chest cavity can fail to inflate fully and quickly start to deteriorate. In such patients, lung contusions can form, edema occurs in healthy lung tissue, and overall lung function declines. To improve patient outcomes after lung transpla
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de Souza Lopes Palagar, Anna Esther, Katrine de Souza Guimarães, Gabriela Motta Vasconcelos, Karla Duarte Barreto Xavier, and Luciano Matos Chicayban. "Elaboration of neonatal and pediatric mechanical lungs." In 7th International Congress on Scientific Knowledge. Biológicas & Saúde, 2021. http://dx.doi.org/10.25242/8868113820212404.

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Pediatric patients or newborns admitted to Neonatal Intensive Care Units (NICU) receive life support care due to various conditions and pathologies. The physiotherapist controls and applies medicinal gases, institutes and monitors invasive and non-invasive mechanical ventilation, as well as performs weaning, among others. Learning ventilatory management must be appropriate for the age and, therefore, consider different lungs for the proper simulations of compliance and resistance. Although the insertion of physical therapists is relatively recent, there are several postgraduate courses and tra
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Amelon, Ryan, Kai Ding, Kunlin Cao, Gary E. Christensen, Joseph M. Reinhardt, and Madhavan Raghavan. "Comparison of Regional Lung Deformation Between Dynamic and Static CT Imagery Using Inverse Consistent Registration." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206689.

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The mechanics of lung deformation is traditionally assessed at a whole-lung or lobar level. We submit that key aspects of lung mechanics maybe better understood by studying regional patterns of lung deformation by leveraging recent developments in tomographic imaging and image processing techniques. Our group has developed an inverse consistent registration technique for estimating local displacement distributions from paired lung CT volumes [1,2]. This facilitates the estimation of strain distributions and consequently, the regional patterns in volume change and its preferential directionalit
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Ludeke, D. Taylor, and Maj Dedin Mirmirani. "The Pulling Device for a Flexible Bronchoscope." In ASME 2006 Frontiers in Biomedical Devices Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/nanobio2006-18045.

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The flexible bronchoscope, used both to directly visualize and biopsy lesions, is an important tool for diagnosing lung cancer [1]. Presented here is a conceptual design for a device that increases the depth to which the scope can be fed into the lungs. This allows doctors to find and accurately diagnose more cases of lung cancer first occurring deeper in the lungs.
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Wang, Xiao, Keith Walters, Greg W. Burgreen, and David S. Thompson. "Cyclic Breathing Simulations: Pressure Outlet Boundary Conditions Coupled With Resistance and Compliance." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-26569.

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A patient-specific non-uniform pressure outlet boundary condition was developed and used in unsteady simulations of cyclic breathing in a large-scale model of the lung airway from the oronasal opening to the terminal bronchioles. The computational domain is a reduced-geometry model, in which some airway branches in each generation were truncated, and only selected paths were retained to the terminal generation. To characterize pressure change through airway tree extending from the truncated outlets to pulmonary zone, virtual airways represented by extended volume mesh zones were constructed in
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Monif, Mamdouh, Kinan Mansour, Waad Ammar, and Maan Ammar. "Automatic Detection and Extraction of Lungs Cancer Nodules Using Connected Components Labeling and Distance Measure Based Classification." In 11th International Conference on Computer Science and Information Technology (CCSIT 2021). AIRCC Publishing Corporation, 2021. http://dx.doi.org/10.5121/csit.2021.110705.

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We introduce in this paper a method for reliable automatic extraction of lung area from CT chest images with a wide variety of lungs image shapes by using Connected Components Labeling (CCL) technique with some morphological operations. The paper introduces also a method using the CCL technique with distance measure based classification for the efficient detection of lungs nodules from extracted lung area. We further tested our complete detection and extraction approach using a performance consistency check by applying it to lungs CT images of healthy persons (contain no nodules). The experime
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Ma, X., S. An, L. Zang, B. Qin, and J. Li. "EXPERIMENTAL STUDY ON LUNG SURROGATE BY BLUNT IMPACTING OF RUBBER BULLET." In 34th International Symposium on Ballistics. Destech Publications, Inc., 2025. https://doi.org/10.12783/ballistics25/37255.

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To construct a lung surrogate with similar mechanical properties and equivalent blunt impact effects, foam silicone material was used as a simulated biological lung material. The material was processed into lung organs structurally resembling biological lungs and integrated with sensors, data acquisition devices, and other equipment to build a testable lung surrogate. Experimental results demonstrated that the mechanical compression properties of the lung surrogate closely matched those of biological lungs, with strong consistency in compression force and compression rate test outcomes. Under
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Patel, Sagar S., Ramesh Natarajan, and Rebecca L. Heise. "Mechanotransduction of Primary Cilia in Lung Adenocarcinoma." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80435.

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Lung cancer causes more than 1 million deaths worldwide annually [1]. In a recent study by the American Cancer Society in 2011, more than 221,000 new cases of lung cancers were reported [2]. Out of these, the mortality rate was found in roughly 70% of the cases [2]. Lung cancer is divided into two major categories: small cell and non-small cell. In the United States, non-small cell lung cancer accounts for 85% of all lung cancers and is considered the most common type of lung cancer [2]. It is usually resistant to chemotherapy, therefore making it extremely difficult to treat [3]. Furthermore
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Pellet, Mathieu, Pierre Melchior, Youssef Abdelmoumen, and Alain Oustaloup. "Fractional Thermal Model of the Lungs Using Havriliak-Negami Function." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48095.

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This paper is about fractional system identification of a thermal model of the lungs. Usually, during open-heart surgery, an extracorporeal circulation (ECC) is carried out on the patient. In order to plug the artificial heart/lung machine on the blood stream, the lungs are disconnected from the circulatory system. This may results in postoperative respiratory complications. A method to protect the lungs has been developed by surgeon and anesthetist. It is called: bronchial hypothermia. The aim is to cool the organ in order to slow down its deterioration. Unfortunately the thermal properties o
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Relatórios de organizações sobre o assunto "Lungs"

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Fine, Alan. Acute Lung Injury: Making Injured Lungs Perform Better and Rebuilding Healthy Lungs. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada538317.

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Fine, Alan. Acute Lung Injury: Making the Injured Lung Perform Better and Rebuilding Healthy Lungs. Defense Technical Information Center, 2012. http://dx.doi.org/10.21236/ada566981.

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Fine, Alan. Acute Lung Injury: Making the Injured Lung Perform Better and Rebuilding Healthy Lungs. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada585102.

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Fine, Alan. Acute Lung Injury: Making the Injured Lung Perform Better and Rebuilding Healthy Lungs. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada561229.

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Rogers, Peter H., Gary W. Caille, and Thomas N. Lewis. Response of the Lungs to Low Frequency Underwater Sound. Defense Technical Information Center, 1994. http://dx.doi.org/10.21236/ada299456.

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Robbins, E. S. Cellular morphometry of the bronchi of human and dog lungs. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/6707808.

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Traub, Richard J. Influence of Manufacturing Processes on the Performance of Phantom Lungs. Office of Scientific and Technical Information (OSTI), 2008. http://dx.doi.org/10.2172/949146.

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Robbins, E. S. Cellular morphometry of the bronchi of human and dog lungs. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/6262282.

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Witten, Mark L. Research Training of the Effects of Toxic Substances on the Lungs. Defense Technical Information Center, 1995. http://dx.doi.org/10.21236/ada307408.

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Witten, Mark L. Research Training of the Effects of Toxic Substances on the Lungs. Defense Technical Information Center, 1993. http://dx.doi.org/10.21236/ada267372.

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