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Cfd Evaluation Of Cluster Specific Image Based Asthma Lung Features On Particle Transport And Hygroscopic Particle Growth Model Validation
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Book Synopsis CFD Evaluation of Cluster Specific Image Based Asthma Lung Features on Particle Transport and Hygroscopic Particle Growth Model Validation by : Lawrence Joseph LeBlanc
Download or read book CFD Evaluation of Cluster Specific Image Based Asthma Lung Features on Particle Transport and Hygroscopic Particle Growth Model Validation written by Lawrence Joseph LeBlanc and published by . This book was released on 2017 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerosolized drug delivery to the human lungs for asthma treatment has long been studied and yet the relationship between the delivery efficacy and the inter-subject variability due to gender, age, and disease severity remains unclear. A recent imaging-based cluster analysis on a population of asthmatic patients identifies four clusters with distinct structural and functional characteristics. The use of cluster membership to explore inter-subject variability by investigating numerically the air flow and particle transport in representative subjects of the asthmatic clusters on inhalation drug delivery in asthma sub-populations is proposed. Large-eddy simulations using computed tomography (CT)-based airway models were performed with a slow and deep breathing profile corresponding to application of a metered dose inhaler. Physiologically consistent subject specific boundary conditions in peripheral airways were produced using an image registration technique and a resistance network compliance model. Particle simulations and final deposition statistics were calculated for particle sizes ranging from 1-8 μm. The results suggested an emphasis on the importance of airway constriction for regional particle deposition and prominent effects of local features in lobar, segmental, and sub-segmental airways on overall deposition patterns. Asthmatic clusters characterized by airway constriction had an increase in deposition efficiency in lobar, segmental, and sub-segmental airways. Local constrictions produced jet flows that impinged on distal bifurcations and resulted in large inertial depositions. Decreased right main bronchus (RMB) branching angle decreased the fraction of particles ventilated to the right upper lobe (RUL). Cluster-based computational fluid dynamics results demonstrate particle deposition characteristics associated with imaging based variables that could be useful for future drug delivery improvements.
Book Synopsis Experimental Validation of CFD Simulations of a Patient-specific Pulmonary Vascular Model Using Particle Image Velocimetry by : Matthew Leroux
Download or read book Experimental Validation of CFD Simulations of a Patient-specific Pulmonary Vascular Model Using Particle Image Velocimetry written by Matthew Leroux and published by . This book was released on 2014 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulmonary hypertension (PH) is a devastating disease characterized by a higher than normal pressure in the main pulmonary artery, which is caused by an increase in vascular resistance at the distal vasculature. Computational fluid dynamics (CFD) can be utilized to identify flow-derived metrics representative of the stage of PH disease and, therefore, provide insight on means of preventative or corrective intervention. Nevertheless, experimental validation of CFD models are often not conducted due to the geometric complexity of the model or shortcomings in the reproduction of the required flow conditions. This may explain the absence of validated computational pulmonary hemodynamics in the literature. The goal of this research is to validate experimentally a CFD simulation with an in vitro pulmonary artery model using a stereo particle image velocimetry (PIV) technique. PIV allows for measuring fluid velocity vector distributions in vascular phantoms, which can then be compared to the velocity field calculated in a CFD model. To accomplish this goal, rapid prototyping is implemented to construct a physical pulmonary geometry and develop the phantom needed for the stereo-PIV experiments. The completion of this work provides invaluable information on the accuracy of CFD predictions for the future assessment of the severity of PH.
Book Synopsis Voltaire en son temps by : René Pomeau
Download or read book Voltaire en son temps written by René Pomeau and published by . This book was released on 1995 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Fluid and Particle Dynamics in the Human Respiratory System by : Jiyuan Tu
Download or read book Computational Fluid and Particle Dynamics in the Human Respiratory System written by Jiyuan Tu and published by Springer Science & Business Media. This book was released on 2012-09-18 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional research methodologies in the human respiratory system have always been challenging due to their invasive nature. Recent advances in medical imaging and computational fluid dynamics (CFD) have accelerated this research. This book compiles and details recent advances in the modelling of the respiratory system for researchers, engineers, scientists, and health practitioners. It breaks down the complexities of this field and provides both students and scientists with an introduction and starting point to the physiology of the respiratory system, fluid dynamics and advanced CFD modeling tools. In addition to a brief introduction to the physics of the respiratory system and an overview of computational methods, the book contains best-practice guidelines for establishing high-quality computational models and simulations. Inspiration for new simulations can be gained through innovative case studies as well as hands-on practice using pre-made computational code. Last but not least, students and researchers are presented the latest biomedical research activities, and the computational visualizations will enhance their understanding of physiological functions of the respiratory system.
Book Synopsis MDCT-based Dynamic, Subject-specific Lung Models Via Image Registration for CFD-based Interrogation of Regional Lung Function by : Youbing Yin
Download or read book MDCT-based Dynamic, Subject-specific Lung Models Via Image Registration for CFD-based Interrogation of Regional Lung Function written by Youbing Yin and published by . This book was released on 2011 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational fluid dynamics (CFD) has become an attractive tool in understanding the characteristic of air flow in the human lungs. Inter-subject variations make subject-specific simulations essential for understanding structure-function relationship, assessing lung function and improving drug delivery. However, currently the subject-specific CFD analysis remains challenging due, in large part to, two issues: construction of realistic deforming airway geometry and imposition of physiological boundary conditions. To address these two issues, we develop subject-specific, dynamic lung models by utilizing two or multiple volume multi-detector row computed tomography (MDCT) data sets and image registrations in this thesis. A mass-preserving nonrigid image registration algorithm is first proposed to match a pair of three-dimensional (3D) MDCT data sets with large deformations. A novel similarity criterion, the sum of squared tissue volume difference (SSTVD), is introduced to account for changes in intensity with lung inflation. We then demonstrate the ability to develop dynamic lung models by using a pair of lung volumes to account for deformations of airway geometries and subject-specific boundary conditions. The deformation of the airway geometry is derived by the registration-derived deformation field and subject-specific boundary condition is estimated from regional ventilation in a 3D and one-dimensional (1D) coupled multi-scale framework. Improved dynamic lung models are then proposed from three lung volumes by utilizing nonlinear interpolations. The improved lung models account for nonlinear geometry motions and time-varying boundary conditions during breathing. The capability of the proposed dynamic lung model is expected to move the CFD-based interrogation of lung function to the next plateau.
Download or read book Aerosol Science written by Ian Colbeck and published by John Wiley & Sons. This book was released on 2014-02-03 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: AEROSOL SCIENCE TECHNOLOGY AND APPLICATIONS Aerosols influence many areas of our daily life. They are at the core of environmental problems such as global warming, photochemical smog and poor air quality. They can also have diverse effects on human health, where exposure occurs in both outdoor and indoor environments. However, aerosols can have beneficial effects too; the delivery of drugs to the lungs, the delivery of fuels for combustion and the production of nanomaterials all rely on aerosols. Advances in particle measurement technologies have made it possible to take advantage of rapid changes in both particle size and concentration. Likewise, aerosols can now be produced in a controlled fashion. Reviewing many technological applications together with the current scientific status of aerosol modelling and measurements, this book includes: Satellite aerosol remote sensing The effects of aerosols on climate change Air pollution and health Pharmaceutical aerosols and pulmonary drug delivery Bioaerosols and hospital infections Particle emissions from vehicles The safety of emerging nanomaterials Radioactive aerosols: tracers of atmospheric processes With the importance of this topic brought to the public's attention after the eruption of the Icelandic volcano Eyjafjallajökull, this book provides a timely, concise and accessible overview of the many facets of aerosol science.
Book Synopsis Respiratory Health by : Mieczyslaw Pokorski
Download or read book Respiratory Health written by Mieczyslaw Pokorski and published by Springer. This book was released on 2015-07-29 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tracheobronchial tree is open to the environment surrounding the body. Respiration has thus the essential bearing on general morbidity, vulnerability to disease and immunity. Further, respiratory function shapes the neuropsychological responses to succumbing to disease, controls the mind-to-body interaction and sets the perception of quality of life. The chapters of this book deal with the preventable drivers of poor respiratory health, the role of health information technology, the improvement in health care delivery and the integration of respiratory health and behavioral health services. Innovative strategies to promote prevention, care coordination and care integration as well as to align disease acceptance and quality of life measures also are tackled. Maintaining respiratory health is of rising research interest as a way of preventing a disease or a non pharmacological therapeutic succor. The book will be of interest to clinicians, family practitioners and medical researchers.
Download or read book Air Pollution written by Bhola R. Gurjar and published by CRC Press. This book was released on 2010-06-22 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air pollution is recognized as one of the leading contributors to the global environmental burden of disease, even in countries with relatively low concentrations of air pollution. Air Pollution: Health and Environmental Impacts examines the effect of this complex problem on human health and the environment in different settings around the world. I
Book Synopsis Aerosol Science and Technology by : David S. Ensor
Download or read book Aerosol Science and Technology written by David S. Ensor and published by RTI Press. This book was released on 2011-10-06 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerosol Science and Technology: History and Reviews captures an exciting slice of history in the evolution of aerosol science. It presents in-depth biographies of four leading international aerosol researchers and highlights pivotal research institutions in New York, Minnesota, and Austria. One collection of chapters reflects on the legacy of the Pasadena smog experiment, while another presents a fascinating overview of military applications and nuclear aerosols. Finally, prominent researchers offer detailed reviews of aerosol measurement, processes, experiments, and technology that changed the face of aerosol science. This volume is the third in a series and is supported by the American Association for Aerosol Research (AAAR) History Working Group, whose goal is to produce archival books from its symposiums on the history of aerosol science to ensure a lasting record. It is based on papers presented at the Third Aerosol History Symposium on September 8 and 9, 2006, in St. Paul, Minnesota, USA.
Book Synopsis Essentials in Fermentation Technology by : Aydin Berenjian
Download or read book Essentials in Fermentation Technology written by Aydin Berenjian and published by Springer. This book was released on 2019-07-15 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook teaches the principles and applications of fermentation technology, bioreactors, bioprocess variables and their measurement, key product separation and purification techniques as well as bioprocess economics in an easy to understand way. The multidisciplinary science of fermentation applies scientific and engineering principles to living organisms or their useful components to produce products and services beneficial for our society. Successful exploitation of fermentation technology involves knowledge of microbiology and engineering. Thus the book serves as a must-have guide for undergraduates and graduate students interested in Biochemical Engineering and Microbial Biotechnology
Book Synopsis Clinical Handbook of Air Pollution-Related Diseases by : Fabio Capello
Download or read book Clinical Handbook of Air Pollution-Related Diseases written by Fabio Capello and published by Springer. This book was released on 2018-02-21 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines in detail the clinical implications of those diseases that either are primarily triggered by air pollution or represent direct consequences of air pollutants. The aim is to provide medical practitioners with practical solutions to issues in diagnosis and treatment while simultaneously furnishing other interested parties with crucial information on the field. The book introduces the concept that air pollution-related diseases constitute a new class of pathologies. A wide range of conditions mainly attributable to air pollution are discussed, covering different body systems and pollution impacts in subsets of the population. In addition to presenting state of the art overviews of clinical aspects, the book carefully examines the implications of current knowledge for social and public health strategies aimed at disease prevention and prophylaxis. The Clinical Handbook of Air Pollution-Related Diseases will greatly assist doctors and healthcare workers when dealing with the consequences of air pollution in their everyday practice and will provide researchers, industry, and policymakers with valuable facts and insights.
Book Synopsis Atmospheric Aerosols by : Olivier Boucher
Download or read book Atmospheric Aerosols written by Olivier Boucher and published by Springer. This book was released on 2015-05-18 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook aims to be a one stop shop for those interested in aerosols and their impact on the climate system. It starts with some fundamentals on atmospheric aerosols, atmospheric radiation and cloud physics, then goes into techniques used for in-situ and remote sensing measurements of aerosols, data assimilation, and discusses aerosol-radiation interactions, aerosol-cloud interactions and the multiple impacts of aerosols on the climate system. The book aims to engage those interested in aerosols and their impacts on the climate system: graduate and PhD students, but also post-doctorate fellows who are new to the field or would like to broaden their knowledge. The book includes exercises at the end of most chapters. Atmospheric aerosols are small (microscopic) particles in suspension in the atmosphere, which play multiple roles in the climate system. They interact with the energy budget through scattering and absorption of solar and terrestrial radiation. They also serve as cloud condensation and ice nuclei with impacts on the formation, evolution and properties of clouds. Finally aerosols also interact with some biogeochemical cycles. Anthropogenic emissions of aerosols are responsible for a cooling effect that has masked part of the warming due to the increased greenhouse effect since pre-industrial time. Natural aerosols also respond to climate changes as shown by observations of past climates and modelling of the future climate.
Book Synopsis Urban Air Quality Monitoring, Modelling and Human Exposure Assessment by : S. M. Shiva Nagendra
Download or read book Urban Air Quality Monitoring, Modelling and Human Exposure Assessment written by S. M. Shiva Nagendra and published by Springer Nature. This book was released on 2020-09-24 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume is primarily intended for graduate and professional audiences. The book provides a basic understanding of urban air quality issues, root causes for local and urban air pollution, monitoring and modelling techniques, assessment, and control options to manage air quality at local and urban scale. The book also offers useful information on indoor air quality and smart sensors, which are gaining much importance in current times.
Book Synopsis Controlled Pulmonary Drug Delivery by : Hugh D.C. Smyth
Download or read book Controlled Pulmonary Drug Delivery written by Hugh D.C. Smyth and published by Springer Science & Business Media. This book was released on 2011-06-24 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pace of new research and level of innovation repeatedly introduced into the field of drug delivery to the lung is surprising given its state of maturity since the introduction of the pressurized metered dose inhaler over a half a century ago. It is clear that our understanding of pulmonary drug delivery has now evolved to the point that inhalation aerosols can be controlled both spatially and temporally to optimize their biological effects. These abilities include controlling lung deposition, by adopting formulation strategies or device technologies, and controlling drug uptake and release through sophisticated particle technologies. The large number of contributions to the scientific literature and variety of excellent texts published in recent years is evidence for the continued interest in pulmonary drug delivery research. This reference text endeavors to bring together the fundamental theory and practice of controlled drug delivery to the airways that is unavailable elsewhere. Collating and synthesizing the material in this rapidly evolving field presented a challenge and ultimately a sense of achievement that is hopefully reflected in the content of the volume.
Book Synopsis Computational Fluid and Solid Mechanics 2003 by : K.J Bathe
Download or read book Computational Fluid and Solid Mechanics 2003 written by K.J Bathe and published by Elsevier. This book was released on 2003-06-02 with total page 2485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bringing together the world's leading researchers and practitioners of computational mechanics, these new volumes meet and build on the eight key challenges for research and development in computational mechanics.Researchers have recently identified eight critical research tasks facing the field of computational mechanics. These tasks have come about because it appears possible to reach a new level of mathematical modelling and numerical solution that will lead to a much deeper understanding of nature and to great improvements in engineering design.The eight tasks are: - The automatic solution of mathematical models - Effective numerical schemes for fluid flows - The development of an effective mesh-free numerical solution method - The development of numerical procedures for multiphysics problems - The development of numerical procedures for multiscale problems - The modelling of uncertainties - The analysis of complete life cycles of systems - Education - teaching sound engineering and scientific judgement Readers of Computational Fluid and Solid Mechanics 2003 will be able to apply the combined experience of many of the world's leading researchers to their own research needs. Those in academic environments will gain a better insight into the needs and constraints of the industries they are involved with; those in industry will gain a competitive advantage by gaining insight into the cutting edge research being carried out by colleagues in academia. Features - Bridges the gap between academic researchers and practitioners in industry - Outlines the eight main challenges facing Research and Design in Computational mechanics and offers new insights into the shifting the research agenda - Provides a vision of how strong, basic and exciting education at university can be harmonized with life-long learning to obtain maximum value from the new powerful tools of analysis
Book Synopsis Lung Cancer and Imaging by : Ayman S. El-Baz
Download or read book Lung Cancer and Imaging written by Ayman S. El-Baz and published by IOP Publishing Limited. This book was released on 2019-12-30 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lung cancer is one of the most common cancers in both men and women worldwide. Early diagnosis of lung cancer can significantly increase the chances of a patient's survival, yet early detection has historically been difficult. As a result, there has been a great deal of progress in the development of accurate and fast diagnostic tools in recent years. Lung Cancer and Imaging provides an introduction to both the methods currently used in lung cancer diagnosis and the promising new techniques that are emerging. Areas covered include the major trends and challenges in lung cancer detection and diagnosis, classification of cancer types, lung feature extraction in joint PET/CT images, and algorithms in the area of low dosage CT lung cancer images.
Book Synopsis Inhalation Studies by : Robert F. Phalen
Download or read book Inhalation Studies written by Robert F. Phalen and published by CRC Press. This book was released on 2008-10-22 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This significantly updated and expanded new edition presents the scientific foundations of inhalation research essential to the design and conduct of toxicologic studies. It incorporates the major advances that have been made in the field, including recent advances in biology and the rapidly increasing global concerns and studies on particulate air pollution. The Second Edition was motivated by: new developments in the ultrafine particle health effects and concentrated aerosol research advances in understanding postnatal lung growth and the deposition and clearance of inhaled particles new techniques in toxicity testing the explosion of knowledge in the genetic and molecular realms the introduction of a large number of transgenic animal models updated ethical guidelines for animal testing the emergence of aerosol medicine the growing threat of aerosol-related terrorism increased appreciation of nonpulmonary effects of inhaled substances use of medical scanning techniques to study respiratory tract structure the introduction of new inhalation exposure systems the emergence of aerosol concentrators for use in air pollution studies
