Ultraviolet Light In Food Technology

Author by : Larry J. Forney
Languange : en
Publisher by : CRC Press
Format Available : PDF, ePub, Mobi
Total Read : 22
Total Download : 483
File Size : 44,9 Mb
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Description : The production of environmentally friendly, sustainable, chemical-free food continues to challenge the food industry, spurring on investigations into alternative food processing techniques that are more sophisticated and diverse than current practices. Exploring one of these emerging solutions, Ultraviolet Light in Food Technology: Principles and Applications incorporates the fundamentals of continuous and pulsed UV light generation and propagation; current food regulations; recommendations for optimal UV reactor design, selection, and validation; information on both commercially available and under-development UV sources; and the outlook for future food applications. After reviewing essential terms, definitions, and current applications, the book emphasizes the need to properly assess the physical and chemical properties in foods that influence the effectiveness of UV treatment and impact inactivation kinetics. It also addresses the effects of UV processing on food quality, before considering the engineering aspects of UV light treatment, such as transport phenomena, process calculations, and continuous-flow reactor geometries. The book then describes the principles of validating UV reactors as well as the principles and applications of UV pulsed light, including microbial inactivation in water, meat, fruits, vegetables, and packaging materials. For anyone working in food research, development, and operations, this resource provides broad, accessible information on the science and applications of UV light technology. It shows how UV light irradiation can be used as a physical preservation method in food processing.


Atmospheric Ultraviolet Remote Sensing

Author by : Robert E. Huffman
Languange : en
Publisher by : Academic Press
Format Available : PDF, ePub, Mobi
Total Read : 94
Total Download : 663
File Size : 52,5 Mb
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Description : This book is an introduction to the use of the ultraviolet for remote sensing of the Earth's atmosphere. It covers the Earth's UV radiative environment, experimental techniques, and current applications. it is my intention to provide the information needed to "make a first approximation" concerning the use of the ultraviolet and to provide access through the literature for a more thorough study. * Contains recent UV applications not previously available in book form such as ozone, auroral images, and ionospheric sensing * Features broad coverage of fundamentals of atmospheric geophysics with values for fluxes, cross-sections, and radiances * Covers techniques that illustrate principles of measurements with typical values * Contains numerous references to original literature


Ecosystems Evolution And Ultraviolet Radiation

Author by : Charles Cockell
Languange : en
Publisher by : Springer Science & Business Media
Format Available : PDF, ePub, Mobi
Total Read : 71
Total Download : 875
File Size : 48,9 Mb
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Description : From microbial to plant ecosystems, this book examines how changes in UV radiation, caused by anthropogenic ozone depletion, as well as changes in radiation levels throughout the evolution of life on Earth, can alter species composition and interspecies competitiveness. It focuses on the evolutionary aspects of the effects of UV as well as the various synergistic interactions of UV radiation with other environmental factors. Because our knowledge of UV effects on whole ecosystems is still at a relatively early stage, an important part of each chapter is an overview of future research directions and indications of where new date and knowledge is needed.


Ultraviolet Danger

Author by : John Martins
Languange : en
Publisher by : The Rosen Publishing Group
Format Available : PDF, ePub, Mobi
Total Read : 63
Total Download : 321
File Size : 40,6 Mb
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Description : Describes how scientists discovered a hole in the ozone layer, the possible causes behind it, the effects of ozone depletion on humans and plants, and steps for improving the ozone levels.


Solar Ultraviolet Radiation

Author by : Christos S. Zerefos
Languange : en
Publisher by : Springer Science & Business Media
Format Available : PDF, ePub, Mobi
Total Read : 39
Total Download : 198
File Size : 44,6 Mb
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Description : Following the rapid developments in the UV-B measurement techniques and the rapidly growing research in the field in the late 80's and early 90's, we organized a large gathering of distinguished experts in a NATO Advanced Study Institute, held in Halkidiki, Greece on October, 2-11. 1995. The Institute was organized so as to include state of the art lectures on most aspects of solar ultraviolet radiation and its effects. This was achieved by extended lectures and discussions given in five sessions by 27 lecturers and a demonstration of filed measurements and calibration techniques at the end of the Institute. The ASI began with the sun and fundamentals on solar radiative emissions and their variability in time and continued with the interaction of solar Ultraviolet with the atmosphere through the complex scattering processes and photochemical reactions involved. Particular emphasis was given to changes in atmospheric composition imposed by different manifestations of the solar activity cycle. as well as on the modelling of radiative transfer through the atmosphere and the ocean under variable environmental conditions. Overviews on the ozone issue. its monitoring and variability were extensively discussed with emphasis on the observed acceleration of ozone decline in the early 90's. This acceleration had as a consequence, significant increases in UV-B radiation observed at a few world-wide distributed stations.


Ultraviolet Germicidal Irradiation Handbook

Author by : Wladyslaw Kowalski
Languange : en
Publisher by : Springer Science & Business Media
Format Available : PDF, ePub, Mobi
Total Read : 82
Total Download : 528
File Size : 52,5 Mb
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Description : This reference covers technical information on ultraviolet germicidal irradiation and its application to air and surface disinfection and the control of pathogens and allergens. Its main focus is airborne microbes and surface contamination applications.


Ccd Image Sensors In Deep Ultraviolet

Author by : Flora Li
Languange : en
Publisher by : Springer Science & Business Media
Format Available : PDF, ePub, Mobi
Total Read : 73
Total Download : 709
File Size : 48,9 Mb
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Description : As the deep-ultraviolet (DUV) laser technology continues to mature, an increasing number of industrial and manufacturing applications are emerging. For example, the new generation of semiconductor inspection systems is being pushed to image at increasingly shorter DUV wavelengths to facilitate inspection of deep sub-micron features in integrated circuits. DUV-sensitive charge-coupled device (CCD) cameras are in demand for these applications. Although CCD cameras that are responsive at DUV wavelengths are now available, their long-term stability is still a major concern. This book describes the degradation mechanisms and long-term performance of CCDs in the DUV, along with new results of device performance at these wavelengths.


Vacuum Ultraviolet Spectroscopy I

Author by :
Languange : en
Publisher by : Academic Press
Format Available : PDF, ePub, Mobi
Total Read : 81
Total Download : 953
File Size : 46,5 Mb
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Description : This volume is for practitioners, experimentalists, and graduate students in applied physics, particularly in the fields of atomic and molecular physics, who work with vacuum ultraviolet applications and are in need of choosing the best type of modern instrumentation. It provides first-hand knowledge of the state-of-the-art equipment sources and gives technical information on how to use it, along with a broad reference bibliography. Key Features * Aimed at experimentalists who are in need of choosing the best type of modern instrumentation in this applied field * Contains a detailed chapter on laboratory sources * Provides an up-to-date description of state-of-the-art equipment and techniques * Includes a broad reference bibliography


Ultraviolet Radiation In The Solar System

Author by : M. Vázquez
Languange : en
Publisher by : Springer Science & Business Media
Format Available : PDF, ePub, Mobi
Total Read : 88
Total Download : 411
File Size : 48,6 Mb
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Description : In the history of science the opening up of a new observational or experimental window is always followed by an increase in knowledge of the subject concerned. This is also the case with the subject of this book, ultraviolet radiation (hereafter UV). In principle, the ultraviolet range might be just one more of these windows, of no particular importance. However, the energy per UV photon provides the main peculiarity, its magnitude being great enough to produce important ch- ical reactions in the atmospheres of planets and satellites, thereby a?ecting the transmission of this radiation to the ground. The Sun is the main natural source of UV radiation in the Solar System and our planet is the body where its in?uences can be best tested and the only one where its relation with life can be studied. However, the terrestrial atmosphere blocksmostofthephotonsinthiselectromagneticrangeandastronomershavehad to develop various techniques (balloons, planes and rockets) to cross this barrier and access the information. These tools have been used in parallel to investigate the physical properties of the terrestrial atmosphere and the interaction of its constituents with light. This book will addresses most of these topics.