Showing posts with label NIR analysis. Show all posts
Showing posts with label NIR analysis. Show all posts

1/16/10

Handbook of Near-Infrared Analysis, Third Edition (Practical Spectroscopy)




Handbook of Near-Infrared Analysis, Third Edition (Practical Spectroscopy)

Fast, inexpensive, and easy-to-use, near-infrared (NIR) spectroscopy can be used to analyze small samples of virtually any composition. The Handbook of Near Infrared Analysis, Third Edition explains how to perform accurate as well as time- and cost-effective analyses across a growing spectrum of disciplines.

Presenting nearly 50% new and revised material, this thoroughly updated edition incorporates the latest advances in instrumentation, computerization, calibration, and method development in NIR spectroscopy. The book underscores current trends in sample preparation, calibration transfer, process control, data analysis, and commercial NIR instrumentation. New chapters highlight novel applications including the analysis of agro-forestry products, polymers, blood, and control serum. They also cover NIR spectra, process analytical technologies (PAT), quantitative and qualitative analyses for nutraceuticals, NIR photography uses in medicine, and counterfeit detection methods for pharmaceuticals and currency.

Offering the most complete single-source guide of its kind, the Handbook of Near Infrared Analysis, Third Edition continues to offer practicing chemists and spectroscopists an unparalleled combination of theoretical foundations, cutting-edge applications, and practical experience provided firsthand by more than 60 experts in the field.

Hardcover:  826 pages
Company: CRC Press  (2007-09-07)
ISBN: 084937393X



1/14/10

Mid-infrared Semiconductor Optoelectronics (Springer Series in Optical Scien...




Mid-infrared Semiconductor Optoelectronics (Springer Series in Optical Sciences)

The mid-infrared (2-10µm) spectral region is of enormous scientific and technological interest because it contains the strongest fingerprint absorption bands of a number of pollutant and toxic gases which require monitoring in a variety of different situations (e.g., oil-rigs, coal mines, landfill sites and car exhausts) and in concentrations, ranging from parts per billion to almost 100%. Organic liquids, narcotics and many biological and bio-medical analytes also have fingerprint absorptions in this spectral range. In addition, the atmospheric transmission window between 3 µm and 5 µm enables free-space optical communications, thermal imaging and the development of infrared counter-measures for "homeland security". However, many of these applications require technology based on un-cooled, efficient, inexpensive sources and detectors which are not yet available and so wide exploitation of this spectral range has yet to take place.
There is no doubt that the practical realisation of mid-infrared semiconductor lasers, LEDs and detectors which can operate at room temperature will transform them from a specialist research curiosity to a pervasive technology that will unlock a wide variety of applications. Many of the necessary developments depend on the ability to fabricate suitable high-quality epitaxial materials through the use of strained-layer engineering at the nanoscale and to manipulate the optoelectronic properties of the corresponding quantum device structures. There are a number of different materials, active region designs and device structures currently being investigated for both light sources and detectors. Many of the salient features together with recent progress in each of these areas is presented in this text.
Mid-infrared Semiconductor Optoelectronics is an overview of the current status and technological advances in this rapidly developing area. It is divided into four parts. First, some of the basic physics and the main problems facing the device engineer (together with a comparison of possible solutions) are presented. Next, there is a consideration of the different types of lasers currently under development. For practical mid-infrared applications semiconductor lasers must operate at room temperature and several different approaches to achieve this, particularly within the difficult 3?4 µm spectral region are discussed. Part III reviews recent work on light-emitting diodes and photodetectors and also deals with negative luminescence. The final part of the book is concerned with applications and highlights, once more, the diversity and technological importance of the mid-infrared spectral region.
The text has been produced by a world-wide authorship of experts in mid-infrared physics and technology, each working at the cutting edge in their own specialist area. Mid-infrared Semiconductor Optoelectronics will be an invaluable reference for researchers and graduate students drawn from backgrounds in physics, electronic and electrical engineering and materials science. Its breadth and thoroughness also make it an excellent starting point for further research and investigation.


Hardcover:  751 pages
Company: Springer  (2006-05-23)
ISBN: 184628208X

1/13/10

Infrared and Raman Spectra of Inorganic and Coordination Compounds, Applicat...




Infrared and Raman Spectra of Inorganic and Coordination Compounds, Applications in Coordination, Organometallic, and Bioinorganic Chemistry

The 6th edition of this classic comprises the most comprehensive guide to infrared and Raman spectra of inorganic, organometallic, bioinorganic, and coordination compounds. From fundamental theories of vibrational spectroscopy to applications in a variety of compound types, it is extensively updated. Part B details applications of Raman and IR spectroscopy to larger and complex systems. It covers interactions of cisplatin and other metallodrugs with DNA and cytochrome c oxidase and peroxidase. This is a great reference for chemists and medical professionals working with infrared or Raman spectroscopies and for graduate students.

Author: Kazuo Nakamoto
Hardcover:  424 pages
Company: Wiley-Interscience  (2009-01-20)
ISBN: 047174493X

1/12/10

Advanced Infrared Photography Handbook


Advanced Infrared Photography Handbook

Exploring the range of possibilities available with infrared film, which responds to light beyond the visible spectrum, this book presents advanced techniques for capturing impressive images. Beginning with an overview of the basics of light, sensitivity, optics, and film handling, this book builds on introductory techniques to teach photographers how to visualize the effect of infrared film on their subjects. The final step of creating infrared images takes the photographer into the darkroom, where topics include reducing or enhancing grain, improving shadow detail, and altering contrast.

Author: Laurie White Hayball
Paperback:  128 pages
Company: Amherst Media, Inc.  (2001-05-01)
ISBN: 1584280492

Study Guide with Solutions Manual for McMurry's Organic Chemistry, 7th


Study Guide with Solutions Manual for McMurry's Organic Chemistry, 7th

Written by Susan McMurry, the Study Guide and Solutions Manual provide answers and explanations to all in-text and end-of-chapter exercises.

Author: John E. McMurry
Paperback:  912 pages
Company: Brooks Cole  (2007-02-20)
ISBN: 0495112682

9/14/09

Sensitivity and specificity of PLS-class modelling for five sensory characteristics of dry-cured ham using visible and near infrared spectroscopy [An



About Sensitivity and specificity of PLS-class modelling for five sensory characteristics of dry-cured ham using visible and near infrared spectroscopy [An article from: Analytica Chimica Acta] detail

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Sensitivity and specificity of PLS-class modelling for five sensory characteristics of dry-cured ham using visible and near infrared spectroscopy [An article from: Analytica Chimica Acta] Description

This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The two objectives of this work were to evaluate near infrared reflectance spectroscopy (NIR) as a tool for on-line classification of dry-cured ham samples according to their sensory characteristics and propose a method for obtaining a set of qualified class models that enables accurate decisions to be taken. With these aims, 117 dry-cured ham samples were classified by expert judges as compliant or non-compliant concerning sensory variables as pastiness, colour, crusting, marbling and ring colour. These samples were also scanned using a remote reflectance fiber optic probe. Each class model built for each sensory variable is evaluated for its sensitivity and specificity, parameters related with the probability of false non-compliance (@a) and false compliance (@b) of ''H"0: the sample is compliant'' hypothesis test. With the five sets of PLS-class modelling the five risk curves, graphs @b versus @a, are estimated. It is therefore possible to choose the risks of false compliance and false non-compliance for each sensorial variable according to the needs of the decision-maker.

9/12/09

Near infrared reflectance spectroscopy and multivariate analysis in enology [An article from: Analytica Chimica Acta]



About Near infrared reflectance spectroscopy and multivariate analysis in enology [An article from: Analytica Chimica Acta] detail

  • Published on: 2004-11-29
  • Format: HTML
  • Binding: Digital

Near infrared reflectance spectroscopy and multivariate analysis in enology [An article from: Analytica Chimica Acta] Description

This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
A study of the feasibility of near infrared reflectance spectroscopy (NIRS) for analytical monitoring in wineries is presented, in which equations for the determination or screening of the commonest enological parameters are proposed. The training and validation sets to develop NIR general equations were built with samples (180) from different apellation d'origine, different wine types, etc. By the calibration step (partial least squares regression and cross-validation were used for multivariate calibration), major components such as ethanol, volumic mass, total acidity, pH, glycerol, colour, tonality and total polyphenol index are accurate determined by the proposed equations as compared with the reference data obtained by the official and standard methods-determination coefficients (R^2) were higher than 0.800 (and higher than 0.900 most times) and standard error cross-validation (SECV) values were close to those of the reference methods. The proposed method also offers screening capability for components such as volatile acidity (R^2 = 0.481), organic acids (R^2 = 0.432 for malic acid, R^2 = 0.544 for tartaric acid, R^2 = 0.541 for gluconic acid)-with the exception of the accurate determination of lactic acid (0.860 and 0.35gl^-^1 for R^2 and SECV, respectively)-reducing sugars (R^2 = 0.705) and total sulphur dioxide (R^2 = 0.615). In equations validation, the correlation between the reference and NIRS methods was tested, and slope and bias values statistically not different from 1 and 0, respectively, were obtained for most parameters.



9/10/09

Content uniformity and tablet hardness testing of intact pharmaceutical tablets by near infrared spectroscopy [An article from: Analytica Chimica Acta



About Content uniformity and tablet hardness testing of intact pharmaceutical tablets by near infrared spectroscopy [An article from: Analytica Chimica Acta] detail

  • Format: HTML
  • Binding: Digital

Content uniformity and tablet hardness testing of intact pharmaceutical tablets by near infrared spectroscopy [An article from: Analytica Chimica Acta] Description

This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The use of process analytical technologies by the pharmaceutical industry is a response to its growing need for improved productivity in order to face the increasing competition in this field. In this work, we explored the use of near infrared spectroscopy (NIRS) for the determination of physical (tablet hardness) and chemical parameters (active principle and content uniformity) in intact individual pharmaceutical tablets. Quantization was done by using a Partial Least Squares 1 (PLS1) calibration model constructed from laboratory calibration samples that were prepared by mixing the active principle and excipients, and pressing the mixture into tablets. The compaction pressure to be applied to the powder was previously determined by using another PLS1 model that allows calculating it from production tablets. The NIRS method used to quantify the active principle is simpler as the calibration set encompasses the variability sources present in production samples; also, it allows individual tablets to be analysed. The proposed method was validated in accordance with the International Conference on Harmonization (ICH) and The European Agency for the Evaluation of Medicinal Products (EMEA) guidelines, and found to be fit for its intended purpose. pose.

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