A Wide Range Phosphor Thermometry Technique

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A Wide-range Phosphor Thermometry Technique

Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis A Wide-range Phosphor Thermometry Technique by :

Download or read book A Wide-range Phosphor Thermometry Technique written by and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluorescing materials exhibit a temperature dependence, which may be exploited for thermometry purposes. Solid state materials such as phosphors, glasses and crystals are examples of such and have been used in commercial instruments and various one-of-a- kind research and development applications. This area has been the subject of previous ISA papers. It is generally the case that fluorescence decay time or lifetime is the parameter that is measured in order to determine temperature for applications that do not require imaging. There are several good reasons for this. The decay time is a very sensitive function of temperature. Time- and rate-dependent methods are independent of amplitude fluctuations and are therefore not as susceptible to optical noise. In some applications, however, other aspects of the temperature-dependent fluorescence can also be useful. What follows is a description that concerns intensity-based methods and the types of applications to which they apply. The emphasis of the present work is the advantage for situations demanding a wide range and rapidly varying temperatures.

Lifetime Surface Phosphor Thermometry

Author : Henrik Feuk
Publisher :
ISBN 13 : 9789180395625
Total Pages : 0 pages
Book Rating : 4.3/5 (956 download)

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Book Synopsis Lifetime Surface Phosphor Thermometry by : Henrik Feuk

Download or read book Lifetime Surface Phosphor Thermometry written by Henrik Feuk and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Temperature is not only a fundamental aspect of everyday life, but it is also an essential metric for thermal conversion systems concerning efficiency, emissions, and component lifetime estimation. Therefore, a vast range of different methods to measure temperature has been developed. The technique of focus in this thesis is lifetime-based surface phosphor thermometry. In phosphor thermometry, one leverages the changes in luminescence of materials called phosphors to measure temperature. The spectral changes can result from shifts in the relative intensity of emission lines in the spectra or shifts in emission line wavelength with temperature. In addition, changes in the lifetime of the phosphorescence signal with temperature can be utilized for thermometry. Inorganic phosphors are ceramic substances that can operate with a range of luminescence activators. Most often, the luminescence originates from trivalent lanthanide ions or transition metal ions doped in a host crystal. Surface phosphor thermometry has the benefit of being a remote sensing technique, where one coats a phosphor on a surface of interest. This phosphor coating is then excited with a remote source, for example, pulsed laser light, and the phosphor luminescence is detected remotely. In this thesis, technology developments, error sources analysis, and applications of phosphor thermometry are presented. The technology developments present a high-temperature calibration system and a method for analyzing the lifetime components in the luminescence decay of phosphors in detail. An analysis of upconversion phosphors for temperature measurements beneath thermal barrier coatings and an investigation of high-temperature phosphors to 1900 K and their sensitivities to the oxygen content of the gas environment are also included in this work. The investigations into potential error sources include how PMT nonlinearity effects can influence the measured lifetime with excitation frequency from 10 Hz up to 10 kHz. In addition, the phosphor luminescence decay time impact of high repetition excitation was also investigated and analyzed to see potential error sources for temperature measurements. Phosphor thermometry was also used in two applications, including measuring the surface temperature of burning wood pellets and the surface temperature of a combustion nozzle in a down-scaled gas turbine combustor using hydrogen-enriched methane as fuel

Thermometry at the Nanoscale

Author : Luís Dias Carlos
Publisher : Royal Society of Chemistry
ISBN 13 : 1849739048
Total Pages : 540 pages
Book Rating : 4.8/5 (497 download)

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Book Synopsis Thermometry at the Nanoscale by : Luís Dias Carlos

Download or read book Thermometry at the Nanoscale written by Luís Dias Carlos and published by Royal Society of Chemistry. This book was released on 2016 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the fundamentals of measuring temperature at the nanoscale, luminescence-based and non-luminescence based thermometry techniques, and applications.

Phosphor Thermometry Signal Analysis and Interpretation

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Phosphor Thermometry Signal Analysis and Interpretation by :

Download or read book Phosphor Thermometry Signal Analysis and Interpretation written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the last International Temperature Symposium, phosphor thermometry has continued to mature with considerable attention given to combustion and turbine engine applications. More recently the utility to problems on the micro- and nano-scales has appreciated, particularly in regard to biological and biomedical situations. The method is therefore used for a wide range of situations. Signal interpretation is important and experience teaches that without sufficient care phosphor signals can be misleading. In order to advance the method, signal analysis investigations should prove fruitful. The specific aspect addressed here is the question of waveform sampling. A simple phenomenological approach is described that explores how the number of points digitized per waveform affects the measurement repeatability and accuracy. This is demonstrated for single shot signals and the average of 512 sequential waveforms. A bright temperature-independent luminescence signal from YVO4:Eu is sampled every 800 ps for a highly sampled condition and every 8 microseconds for a low sampled condition. When the average of 512 waveforms are compared for the two sampling conditions, they differ by only 0.4%. For the highly sampled case, a noisy single shot waveform compared to the averaged waveform differed by 1.8%. Future efforts on this subject will address intermediate and lower sampling rates. Also, variable window techniques should be explored that are especially important for non-log-linear signals. Investigations, such as this, give the developer the requisite information for designing analysis systems appropriate for the intended application in terms of precision, accuracy, and response time.

Optical Methods for Data Processing in Heat and Fluid Flow

Author : Clive Greated
Publisher : John Wiley & Sons
ISBN 13 : 9781860582813
Total Pages : 328 pages
Book Rating : 4.5/5 (828 download)

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Book Synopsis Optical Methods for Data Processing in Heat and Fluid Flow by : Clive Greated

Download or read book Optical Methods for Data Processing in Heat and Fluid Flow written by Clive Greated and published by John Wiley & Sons. This book was released on 2002-08-30 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical methods are now used routinely for the measurement of velocity, concentration, temperature, and other parameters in wide-ranging areas of industrial research and design such as IC engines, turbines, and combustors. Recent advances such as the use of high-resolution CCD cameras and the extension of flow mapping to three dimensions, make optical tools such as particle image velocimetry increasingly viable for use in the industrial environment. This excellent book presents new developments in optical diagnostic techniques in heat and fluid flow and offers an unparalleled opportunity for industrialists and academic researchers to exchange ideas. CONTENTS INCLUDE: Comparison of injector sprays for gasoline direct-injection engines The design, development, and preliminary results from a high-speed, optically accessed, single cylinder engine The reflected spectrum of complex multi-layered inhomogeneous highly scattering medium Development of full volume digital holography for particle measurement Improved liquid crystal thermography by using true-colour image processing technology Development of an optical measuring technique for the study of acoustical phenomena Spatio-temporal reconstruction of the unsteady wake of axisymmetric bluff bodies via time-recording DPIV Application of particle image velocimetry to helicopter vortex interactions Pulsed laser particle image velocimetry using a fibre-optic delivery system Automated fringe analysis for profilometric mass-transfer experiments.

Laser Spectroscopy for Sensing

Author : Matthieu Baudelet
Publisher : Elsevier
ISBN 13 : 085709873X
Total Pages : 601 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis Laser Spectroscopy for Sensing by : Matthieu Baudelet

Download or read book Laser Spectroscopy for Sensing written by Matthieu Baudelet and published by Elsevier. This book was released on 2014-02-15 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser spectroscopy is a valuable tool for sensing and chemical analysis. Developments in lasers, detectors and mathematical analytical tools have led to improvements in the sensitivity and selectivity of spectroscopic techniques and extended their fields of application. Laser Spectroscopy for Sensing examines these advances and how laser spectroscopy can be used in a diverse range of industrial, medical, and environmental applications. Part one reviews basic concepts of atomic and molecular processes and presents the fundamentals of laser technology for controlling the spectral and temporal aspects of laser excitation. In addition, it explains the selectivity, sensitivity, and stability of the measurements, the construction of databases, and the automation of data analysis by machine learning. Part two explores laser spectroscopy techniques, including cavity-based absorption spectroscopy and the use of photo-acoustic spectroscopy to acquire absorption spectra of gases and condensed media. These chapters discuss imaging methods using laser-induced fluorescence and phosphorescence spectroscopies before focusing on light detection and ranging, photothermal spectroscopy and terahertz spectroscopy. Part three covers a variety of applications of these techniques, particularly the detection of chemical, biological, and explosive threats, as well as their use in medicine and forensic science. Finally, the book examines spectroscopic analysis of industrial materials and their applications in nuclear research and industry. The text provides readers with a broad overview of the techniques and applications of laser spectroscopy for sensing. It is of great interest to laser scientists and engineers, as well as professionals using lasers for medical applications, environmental applications, military applications, and material processing. Presents the fundamentals of laser technology for controlling the spectral and temporal aspects of laser excitation Explores laser spectroscopy techniques, including cavity-based absorption spectroscopy and the use of photo-acoustic spectroscopy to acquire absorption spectra of gases and condensed media Considers spectroscopic analysis of industrial materials and their applications in nuclear research and industry

LED EXCITATION OF THERMOGRAPHIC PHOSPHORS FOR SURFACE TEMPERATURE ANALYSIS ON TISSUE AND FLEXIBLE CERAMICS.

Author : Atul Raj Regmi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)

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Book Synopsis LED EXCITATION OF THERMOGRAPHIC PHOSPHORS FOR SURFACE TEMPERATURE ANALYSIS ON TISSUE AND FLEXIBLE CERAMICS. by : Atul Raj Regmi

Download or read book LED EXCITATION OF THERMOGRAPHIC PHOSPHORS FOR SURFACE TEMPERATURE ANALYSIS ON TISSUE AND FLEXIBLE CERAMICS. written by Atul Raj Regmi and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphor thermometry offers many advantages over other temperature sensing techniques and is firmly established as a superior technique when compared to others such as infrared and resistive heating methods. The aim of the present work is to extend the application range of phosphor thermometry by exploring the feasibility of two new areas. In the first assessment, the temperature of tissue was evaluated by directly and indirectly interfacing thermographic phosphors with tissue. In the indirect method the temperature evaluated was the result of joule heating that occurred in a current carrying electrode mimicking an implant. The current was supplied by a DC supply. Results indicate that the signal transferred across the tissue boundary is in fact intense enough and clearly detectable to accurately infer temperature values from the decay curves associate with thermographic phosphors. The decay time was measured up to the thickness of 22.55 mm. . In the second part of the work the decay behavior of YAG:Dy coated on flexible ceramic strips of Yttrium Stabilized Zirconia (YSZ) was thoroughly investigated and characterized from ambient to 1200 °C. This was accomplished by 365 nm UV LED excitation and monitoring the 4I15/2 ®6H15/2 transition at 456 nm. The decay characteristics did not show a strong temperature dependence up to 9̃00°C. However, at temperatures exceeding 900°C there was a strong temperature dependence, such that the decay time decreased as a function of temperature. In the second part of the work the decay behavior of YAG:Dy coated on flexible ceramic strips of Yttrium Stabilized Zirconia (YSZ) was thoroughly investigated and characterized from ambient to 1200 °C. This was accomplished by 365 nm UV LED excitation and monitoring the 4I15/2 ®6H15/2 transition at 456 nm. The decay characteristics did not show a strong temperature dependence up to 9̃00°C. However, at temperatures exceeding 900°C there was a strong temperature dependence, such that the decay time decreased as a function of temperature.

Temperature Measurement

Author : L. Michalski
Publisher : John Wiley & Sons
ISBN 13 : 9780471867791
Total Pages : 526 pages
Book Rating : 4.8/5 (677 download)

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Book Synopsis Temperature Measurement by : L. Michalski

Download or read book Temperature Measurement written by L. Michalski and published by John Wiley & Sons. This book was released on 2001-12-21 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die exakte Temperaturmessung ist ein wichtiger Parameter in vielen Bereichen. Dieser Band wurde komplett überarbeitet und aktualisiert und enthält darüber hinaus die neuesten IEC Standards. Theorie und instrumentelle Praxis der Temperaturbestimmung werden hier umfassend behandelt. (09/00)

Luminescence Thermometry

Author : Miroslav Dramićanin
Publisher : Woodhead Publishing
ISBN 13 : 0081020309
Total Pages : 304 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Luminescence Thermometry by : Miroslav Dramićanin

Download or read book Luminescence Thermometry written by Miroslav Dramićanin and published by Woodhead Publishing. This book was released on 2018-04-21 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Luminescence Thermometry: Methods, Materials, and Applications presents the state-of-the art applications of luminescence thermometry, giving a detailed explanation of luminescence spectroscopic schemes for the read-out of temperature, while also describing the diverse materials that are capable of sensing temperature via luminescence. Chapters cover the fundamentals of temperature, traditional thermometers and their figures of merit, a concise description of optical thermometry methods, luminescence and instrumentation, and an explanation of the ways in which increases in temperature quench luminescence. Additional sections focus on materials utilized for luminescence thermometry and the broad range of applications for luminescence thermometry, including temperature measurement at the nanoscale and the application of multifunctional luminescent materials. Provides an overview of luminescence thermometry applications, including high-temperature, biomedical, nanoscale and multifunctional Delves into luminescence thermometry by materials group, including Rare-earth and transition Metal Ion Doped, Semiconductors, Quantum Dots and Organic materials Gives a concise introduction of the latest methods of temperature measurement, including luminescence spectroscopic schemes and methods of analysis

Proceedings of the International Instrumentation Symposium

Author :
Publisher :
ISBN 13 :
Total Pages : 600 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Proceedings of the International Instrumentation Symposium by :

Download or read book Proceedings of the International Instrumentation Symposium written by and published by . This book was released on 1999 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Exploration of Thin Film Polymers for Phosphor Thermometry

Author : Pratikshya Parajuli
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (978 download)

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Book Synopsis Exploration of Thin Film Polymers for Phosphor Thermometry by : Pratikshya Parajuli

Download or read book Exploration of Thin Film Polymers for Phosphor Thermometry written by Pratikshya Parajuli and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Phosphor thermometry has been investigated in recent years as means to explore instantaneous remote thermometry. Many different types of thermographic powders exist. In most cases work has been performed on these materials while in a fine powder form. There are significant challenges when working with fine powders (nm- & micro;m particle size) and these challenges have limited the range of characterizations and potential applications of these materials. Among the different types of thermographic phosphors La2O2Su:Eu is one of the most sensitive types that is currently available. Lanthanum oxysulfide doped with Eu has been reported to have a sensitivity of 0.01 & deg;C with a wide temperature range of response-cryogenics to 1500 & deg;C. In this work two types of La2O2S:Eu (0.1 % and 1.0% Eu concentration) have been fully characterized at cryogenic temperatures and at elevated temperatures while embedded in an elastomeric sleeve. The flexible optically transparent elastomer Sylgard 184 was chosen as the encapsulant for this study. Samples with increasing levels of La2O2S:Eu powder (from 1 wt % to 25 wt%) were prepared and studied. Both single layer (single concentration) and multilayer (concentration gradient) sample types were prepared using spin-coating techniques and fully characterized. The effect of the La2O2Su:Eu particles on the thermal, mechanical, and luminescence behavior of the composite materials was fully investigated and reported here. While the percentage of the Eu (0.1 versus 1.0%) did not have a detectable effect on the emission characteristics of the composites, it did indeed affect the thermal and mechanical properties of the composites. SEM investigation suggests that the differences in the granular structure of the two powders has influenced the properties of the composite polymers prepared in this study. Furthermore, the emission behavior of the La2O2Su:Eu+Sylgard184 composites showed a strong non-linear temperature dependence in the range of -40 & deg;C to 75 & deg;C and little dependence on the powder concentration level.

Testing and Measurement: Techniques and Applications

Author : Kennis Chan
Publisher : CRC Press
ISBN 13 : 1315684934
Total Pages : 478 pages
Book Rating : 4.3/5 (156 download)

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Book Synopsis Testing and Measurement: Techniques and Applications by : Kennis Chan

Download or read book Testing and Measurement: Techniques and Applications written by Kennis Chan and published by CRC Press. This book was released on 2015-06-11 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Testing and Measurement: Techniques and Applications is divided into 6 sections: Microwave, Ultrasonic and Acoustic Measurement and Application; Material Performance and Measuring and Testing Technique; Laser, Optics Fiber and Sensor; Industrial Autoimmunization and Measurement; Artificial Intelligence and Application; and Image, Signal and In

Investigation of the Viability of Thermographic Phosphor as a Sensing Mechanism for Structural Damage in Aerogel and PDMS

Author : Katherine Elizabeth Mitchell
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis Investigation of the Viability of Thermographic Phosphor as a Sensing Mechanism for Structural Damage in Aerogel and PDMS by : Katherine Elizabeth Mitchell

Download or read book Investigation of the Viability of Thermographic Phosphor as a Sensing Mechanism for Structural Damage in Aerogel and PDMS written by Katherine Elizabeth Mitchell and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Detecting structural damage in a material before complete failure has been a challenge with respect to material access, sensing mechanism resolution, and environmental setting, among other factors. In this work, the feasibility of using thermographic phosphors as a non-contact, instantaneous, and customizable sensing mechanism for detection of structural damage was investigated. The two materials were (1) Sylgard 184 elastomer and (2) silica aerogels. Both materials were impregnated with thermographic phosphors using different methods and tested over a wide range of temperatures. The degree of fracture in either material was gradually increased to represent a complete material failure scenario and a gradual propagation of defect that has not yet led to ultimate failure. The aerogel synthesis methodology was optimized for phosphor application so that either a discrete layer of phosphor would be embedded or a homogeneous mix was created and phoshpor was distributed uniformly throughout the material. The discreteness of the phosphor layer was identified by two distinct points representing the entrance and exit points of the excitation and emission beams. The composite materials (homogeneous and otherwise) were fully characterized, and the sensitivity of the remote, non-contact sensing was evaluated. It was determined that fracture and failure in both aerogel and PDMS could be detected by phosphor thermometry and the limit of its resolution was ultimately determined by the thermal properties of the material, the choice of phosphors, and ambient temperature. In conclusion, thermogrpahic phosphor powders were successfully incorporated at discrete levels and superficially in aerogels and in PDMS materials and as a result can be used as means to interrogate the bulk of the material. Phosphor thermometry proved to be a viable option for remotely identifying structural defects in these two materials, with limitations. The changes in the thermal profile of the materials as a result of material defects were used to infer information about the structural health of the matierla.

Comparison of Methods of Supplying Phosphorus to Range Cattle

Author : William Henry Black
Publisher :
ISBN 13 :
Total Pages : 888 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Comparison of Methods of Supplying Phosphorus to Range Cattle by : William Henry Black

Download or read book Comparison of Methods of Supplying Phosphorus to Range Cattle written by William Henry Black and published by . This book was released on 1949 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Encyclopedia of Chemical Processing

Author : Sunggyu Lee
Publisher : Taylor & Francis US
ISBN 13 : 9780824755584
Total Pages : 720 pages
Book Rating : 4.7/5 (555 download)

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Book Synopsis Encyclopedia of Chemical Processing by : Sunggyu Lee

Download or read book Encyclopedia of Chemical Processing written by Sunggyu Lee and published by Taylor & Francis US. This book was released on 2006 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collecting information of vital interest to chemical, polymer, mechanical, electrical, and civil engineers, as well as chemists and chemical researchers, this "Encyclopedia "supplies nearly 350 articles on current design, engineering, science, and manufacturing practices-offering expertly written articles on technologies at the forefront of the field to maximize and enhance the research and production phases of current and emerging chemical manufacturing practices and techniques.

Encyclopedia of Chemical Processing (Online)

Author : Sunggyu Lee
Publisher : CRC Press
ISBN 13 : 1351237683
Total Pages : 3338 pages
Book Rating : 4.3/5 (512 download)

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Book Synopsis Encyclopedia of Chemical Processing (Online) by : Sunggyu Lee

Download or read book Encyclopedia of Chemical Processing (Online) written by Sunggyu Lee and published by CRC Press. This book was released on 2005-11-01 with total page 3338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition Encyclopedia supplies nearly 350 gold standard articles on the methods, practices, products, and standards influencing the chemical industries. It offers expertly written articles on technologies at the forefront of the field to maximize and enhance the research and production phases of current and emerging chemical manufacturing practices and techniques. This collecting of information is of vital interest to chemical, polymer, electrical, mechanical, and civil engineers, as well as chemists and chemical researchers. A complete reconceptualization of the classic reference series the Encyclopedia of Chemical Processing and Design, whose first volume published in 1976, this resource offers extensive A-Z treatment of the subject in five simultaneously published volumes, with comprehensive indexing of all five volumes in the back matter of each tome. It includes material on the design of key unit operations involved with chemical processes; the design, unit operation, and integration of reactors and separation systems; process system peripherals such as pumps, valves, and controllers; analytical techniques and equipment; and pilot plant design and scale-up criteria. This reference contains well-researched sections on automation, equipment, design and simulation, reliability and maintenance, separations technologies, and energy and environmental issues. Authoritative contributions cover chemical processing equipment, engineered systems, and laboratory apparatus currently utilized in the field. It also presents expert overviews on key engineering science topics in property predictions, measurements and analysis, novel materials and devices, and emerging chemical fields. ALSO AVAILABLE ONLINE This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for both researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]

Manufacturing Process Controls for the Industries of the Future

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309173752
Total Pages : 72 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Manufacturing Process Controls for the Industries of the Future by : National Research Council

Download or read book Manufacturing Process Controls for the Industries of the Future written by National Research Council and published by National Academies Press. This book was released on 1998-08-14 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manufacturing process controls include all systems and software that exert control over production processes. Control systems include process sensors, data processing equipment, actuators, networks to connect equipment, and algorithms to relate process variables to product attributes. Since 1995, the U.S. Department of Energy Office of Industrial Technology 's (OIT) program management strategy has reflected its commitment to increasing and documenting the commercial impact of OIT programs. OIT's management strategy for research and development has been in transition from a "technology push" strategy to a "market pull" strategy based on the needs of seven energy-and waste-intensive industries-steel, forest products, glass, metal casting, aluminum, chemicals, and petroleum refining. These industries, designated as Industries of the Future (IOF), are the focus of OIT programs. In 1997, agriculture, specifically renewable bioproducts, was added to the IOF group. The National Research Council Panel on Manufacturing Process Controls is part of the Committee on Industrial Technology Assessments (CITA), which was established to evaluate the OIT program strategy, to provide guidance during the transition to the new IOF strategy, and to assess the effects of the change in program strategy on cross-cutting technology programs, that is, technologies applicable to several of the IOF industries. The panel was established to identify key processes and needs for improved manufacturing control technology, especially the needs common to several IOF industries; identify specific research opportunities for addressing these common industry needs; suggest criteria for identifying and prioritizing research and development (R&D) to improve manufacturing controls technologies; and recommend means for implementing advances in control technologies.