McGraw-Hill Manual of Laboratory and Diagnostic Tests

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McGraw-Hill Manual of Laboratory and Diagnostic Tests Critical testing information and key clinical protocols in the palm of your hand McGraw-Hill's Manual of Laboratory & Diagnostic Tests focuses specifically on what you need to know to understand the test, educate the patient, and provide safe, effective care before, during, and after the test. In addition, this easy-to-use clinical companion is the only text to actively incorporate evidence-based practice features throughout, both in test monographs and appendices-a major advantage that enhances your ability to apply the book's content to your daily practice. Features: A cohesive 5-part organization covering the full range of laboratory tests, diagnostic tests, laboratory/diagnostic assessments of body function, education, and screening Time-saving alphabetical organization of tests with handy thumb tabs Full-color icons that highlight the organization of each test, and clearly identify important features throughout Skill-sharpening references to national guidelines, including JCAHO Full coverage of clinical interventions/implications Essential insights into the possible meanings of abnormal values and contraindications Key references that pertain to evidence-based practice Timely appendix on the increasing use of evidence-based practice Critical patient teaching information

Handbook of Laboratory and Diagnostic Tests (6th Edition)

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Handbook of Laboratory and Diagnostic Tests (6th Edition) Organized alphabetically by tests, this reference pocket guide provides easy access to information on more than 500 laboratory and diagnostic tests. It has an emphasis on reference values and normal findings, descriptions, purposes, procedures, clinical problems and drug affects, factors affecting tests results, nursing implications and client teaching. New to the 6th edition are: 30 new laboratory and diagnostic tests, such as antisperm antibody test, breast cancer genetic testing, and endoscopic ultrasound; Updated data for HIV tests such as glucose results, Cardiac catheterization tests, mammography tests, and nuclear scan tests; updated Health Problems with Laboratory and Diagnostic tests presenting 40 frequently identified health problems; and updated screening and tests, including nurse's function in educating and testing school children.

Nurse's Quick Reference to Common Laboratory and Diagnostic Tests (Nurses Quick Reference to Common Laboratory and Diagnostic Tests)

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Nurse's Quick Reference to Common Laboratory and Diagnostic Tests (Nurses Quick Reference to Common Laboratory and Diagnostic Tests) Now in full color, thoroughly updated, and streamlined, this user-friendly handbook is a succinct clinical reference derived from A Manual of Laboratory and Diagnostic Tests, Seventh Edition. This portable handbook contains an alphabetical listing of common lab and diagnostic tests, with nursing interventions, in a consistent format. The focus is on the nurse's role in performing, evaluating, or assisting with tests. Clinical Alerts throughout highlight vital information. This edition includes many new and recently approved tests. Nursing diagnoses have been updated to meet new standards.

Mosby's Diagnostic and Laboratory Test Reference

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Mosby's Diagnostic and Laboratory Test Reference Access the clinically relevant information you need easily in any setting with Mosby's Diagnostic and Laboratory Test Reference, Ninth Edition. This best-selling handbook provides concise coverage of tests without sacrificing important details. Each test entry includes, where relevant, alternate or abbreviated test names; type of test; normal findings; possible critical values; test explanation and related physiology; contraindications; potential complications; interfering factors; procedure and patient care (before, during, and after); and abnormal findings. Related tests are extensively cross-referenced throughout the book. With its simple format and portable size, this is a handy reference you'll always want by your side. Tests are organized alphabetically with A-to-Z thumb tabs for quick reference. UNIQUE! Each test entry begins on a new page, making tests easy to find. Normal findings for adult (male and female), elderly, and pediatric patients are included where applicable to provide complete clinical data. Possible critical values are highlighted to alert you to situations requiring immediate intervention. Symbol next to drug-related interfering factors alerts you to the effects of pharmacologic agents on tests. Increased and decreased abnormal findings are highlighted with directional arrows. Icon for patient teaching-related care indicates information to share with patients and their families. UNIQUE! Each test concludes with a "Notes" section where you can add your own information. User's Guide to Test Preparation and Performance provides an overview and guidelines for each type of laboratory test and diagnostic procedure to ensure safety and accuracy. Lists of tests by body system and test type allow you to quickly locate related studies. Abbreviations for tests are listed on the end papers, and symbols and units of measurement are listed in an appendix. UNIQUE! Durable cover with round edges helps prevent the book from being damaged and makes it easier to handle. Over 40 NEW tests, including CT of the Heart, Intravascular Ultrasound, Newborn Metabolic Screening, and Platelet Closure Time, present the latest information on diagnostic and laboratory testing.

Saunders Nursing Guide to Laboratory and Diagnostic Tests

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Saunders Nursing Guide to Laboratory and Diagnostic Tests This complete lab book contains the latest information on testing organized alphabetically for quick reference. It is both student-friendly and a great resource for practicing nurses. Normal values for lab tests are given in standard and SI units, and Test Result Indications sections list the possible clinical significance of abnormal findings. Tests are presented in a format that emphasizes the nurse’s role, and includes Basics the Nurse Needs to Know and Nursing Care. The clinical purpose of each test is identified, and how each test is performed is clearly explained. A pronunciation guide for the name of each test helps with difficult terminology. * A focus on nursing explains how lab tests are used in nursing care. * Alphabetical organization makes every test easy to find. * Pronunciation guides for test names help students with difficult terminology. * "Purpose of the Test" sections identify the indications of each test. * "Basics the Nurse Needs to Know" offers an explanation of each test in clear, simple language. * Normal Values in standard and SI units include variations for gender and age, where relevant. * Critical Values are highlighted with the Normal Values, where relevant. * "How the Test is Done" sections succinctly describe how each test is performed. * "Significance of Test Results" sections list the diseases and disorders that are associated with abnormal findings. * "Interfering Factors" sections list of the factors—such as drugs, herbs, and improper specimen collection and handling—that inadvertently affect test results. * "Nursing Care" sections

Mosby's Manual of Diagnostic and Laboratory Tests

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Mosby's Manual of Diagnostic and Laboratory Tests The 3rd edition of this widely used resource offers superb guidance on diagnostic and laboratory testing for health professionals in both academic and clinical settings. The chapters are organized by test type and each chapter begins with a list of the tests covered within the test type, as well as an overview of that category including specimen collection techniques. The tests are presented in a consistent format that includes normal findings, indications, contraindications, potential complications, interfering factors, procedure and patient care, test results and clinical significance, and related tests. This full-color book is easy to use and covers virtually every clinically significant test, including more than 50 new to this edition. * A full color interior design and over 140 vivid color photographs and illustrations depict procedures, equipment, techniques, and concepts, making the content more visually appealing to the reader and the concepts easier to understand. * Comprehensive coverage of all diagnostic and laboratory tests routinely performed today. Over 700 individual tests are covered in approximately 360 entries. * Clinical Significances of test results, indicated in italic type, explain the pathophysiology of disease processes and how they relate to test results. * Color-coded chapter thumb-tabs, alphabetically organized chapters, and two lists of all tests (Appendix A, Alphabetical List of Tests and Appendix B, List of Tests by Body System) make every test easy to find. * Critical Values are highlighted with color to alert the reader to situations requiring immediate intervention.

Laboratory and Diagnostic Tests with Nursing Implications (7th Edition) (LABORATORY & DIAGNOSTIC TESTS W/ NURSING IMPLICATIONS (KEE))

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Laboratory and Diagnostic Tests with Nursing Implications (7th Edition) (LABORATORY & DIAGNOSTIC TESTS W/ NURSING IMPLICATIONS (KEE)) Laboratory and Diagnostic Tests with Nursing Implications is designed to provide readers with the necessary information regarding laboratory and diagnostic tests and corresponding nursing implications. It gives quick, pertinent information about the tests, emphasizing the purposes, procedure and nursing implications with rationale. Laboratory Tests in alphabetical order. Diagnostic Tests in alphabetical order. Laboratory/Diagnostic Assessments of Body Function including 12 categories related to organ system and clinical conditions; each category contains numerous laboratory and diagnostic tests ordered to assist in the diagnosis of disease entities and to determine organ function. Therapeutic Drug Monitoring (TDM); the TDM section includes 120 drugs and their therapeutic range, peak time, and toxic level. School Nurse’s Functions: Screening and Testing covers suggested assessment tools for the school nurse. Nursing Students and Professionals. For registered nurses, and licensed practical nurses in hospital settings, including specialty areas such as the ICU, emergency rooms, clinics, health care provider offices, and independent nursing practices.

Laboratory Tests and Diagnostic Procedures with Nursing Diagnoses (7th Edition) (LABORATORY & DIAGNOSTIC TESTS WITH NURSING DIAGNOSES (CORBETT))

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Laboratory Tests and Diagnostic Procedures with Nursing Diagnoses (7th Edition) (LABORATORY & DIAGNOSTIC TESTS WITH NURSING DIAGNOSES (CORBETT)) Written by a highly respected author in the lab and diagnostic test field, this reference explains in detail the clinical significance of tests and diagnostic procedures. Its comprehensive coverage is augmented by a strong emphasis on nursing care as applied to lab and diagnostic tests, and on the relationship between nursing diagnoses and nursing care. Both scholarly and practical, it is ideal for use in both classroom and clinical settings. Each chapter is organized as an independent study unit--complete with objectives, an organizing theme with background information (called an expository organizer), and test questions.

Laboratory and Diagnostic Tests (8th Edition) (LABORATORY & DIAGNOSTIC TESTS W/ NURSING IMPLICATIONS (KEE))

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Laboratory and Diagnostic Tests (8th Edition) (LABORATORY & DIAGNOSTIC TESTS W/ NURSING IMPLICATIONS (KEE)) Organized alphabetically by test, this reference guide provides quick and reliable access to information on over 420 laboratory tests and diagnostic procedures. With additional information provided for each procedure and extensive nursing implications with client teaching material, this book is an invaluable resource for nursing students and professionals alike.

Davis's Comprehensive Handbook of Laboratory and Diagnostic Tests with Nursing Implications, 3rd Edition (DavisPlus)

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Davis's Comprehensive Handbook of Laboratory and Diagnostic Tests with Nursing Implications, 3rd Edition (DavisPlus) Here's the information nurses and nursing students need to know about laboratory and diagnostic tests! This nursing-focused, easy-to-read handbook provides all of the information you need to understand how tests work, interpret their results, and provide quality patient care, including assessing, monitoring, and teaching at every stage of care pre-test, intra-test, and post-test. Tests and procedures are listed in alphabetical order by their complete name for quick reference. The integrated index allows fast searches by abbreviation, synonym, disease/disorder, specimen type, or test classification. Plus, a Body Systems Appendix includes a list of common laboratory and diagnostic tests for each body system as well as nutrition-related lab tests. Whats New? * New and expanded pathophysiology information, so you know why a lab test result is increased or decreased. * New and expanded coverage of patient education and safety. * More information for nursing subspecialties, including maternity, neurology, and sensory. * New and revised coverage of interfering substances, especially those related to medication and nutraceuticals. * Expanded cross referencing of related lab and diagnostic tests in every monograph. * Revised and expanded Body System tables appendix now includes ocular diagnostic tests and nutrition-related lab tests. * New heads highlight Sensitivity to Social and Cultural Issues and Nutritional Considerations for each test, where appropriate. * New table on National Patient Safety Goals, correlating The Joint Commission s patient safety standards to laboratory and diagnostic test content specific to nurses. Key Features * Monographs each written specifically to focus on what you need to do before, during, and after each laboratory and diagnostic test. * Unique coverage of laboratory and diagnostic tests for subspecialties, such as maternity, therapeutic drug monitoring, nutrition and sensory. * Reference Ranges expressed in both conventional and SI units (with the SI unit conversion factor) include age- and gender-specific variations when indicated and normal variations due to cultural considerations. * Interfering Factors identified, including food, natural products, timing of test, handling of specimen, underlying patient conditions, and drugs that may interfere with the results of the test. * Full-color specimen tube top guide on the inside front and back covers. * And much more!

Multiplexing fibre optic near infrared (NIR) spectroscopy as an emerging technology to monitor industrial bioprocesses [An article from: Analytica Chi

About Multiplexing fibre optic near infrared (NIR) spectroscopy as an emerging technology to monitor industrial bioprocesses [An article from: Analytica Chimica Acta] detail

• Published on: 2007-05-02
• Format: HTML
• Binding: Digital
• 7 pages

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This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2007. 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 application of near infrared spectroscopy in bioprocessing has been limited by its dependence on calibrations derived from single bioreactor at a given time. Here, we propose a multiplexed calibration technique which allows calibrations to be built from multiple bioreactors run in parallel. This gives the flexibility to monitor multiple vessels and facilitates calibration model transfer between bioreactors. Models have been developed for the two key analytes: glucose and lactate using Chinese hamster ovary (CHO) cell lines and using analyte specific information obtained from the feasibility studies. We observe slight model degradation for the multiplexed models in comparison to the conventional (single probe) models, decrease in r^2 values from 89.4% to 88% for glucose whereas for lactate from 92% to 91.8% and a simultaneous increase in the number of factors as the model incorporates the inter-probe variability, nevertheless the models were fit for purpose. The results of this particular application of implementing multiplexed-NIRS to monitor multiple bioreactor vessels are very encouraging, as successful models have been built on-line and validated externally, which proffers the prospect of reducing timelines in monitoring the vessels considerably, and in turn, providing improved control.

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Relationship between sensory analysis and near infrared spectroscopy in Australian Riesling and Chardonnay wines [An article from: Analytica Chimica A

About Relationship between sensory analysis and near infrared spectroscopy in Australian Riesling and Chardonnay wines [An article from: Analytica Chimica Acta] detail

• Published on: 2005-05-10
• Format: HTML
• Binding: Digital

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This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2005. 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 aim of this work was to investigate the relationship between sensory analysis and visible and near infrared spectroscopy in two Australian white wine varieties (namely unwooded Chardonnay and Riesling). A total of 120 samples (2 varietiesx3 replicatesx20 commercial labels) were scanned in transmission mode in the visible and near infrared range (400-2500nm). For the purposes of this study four aroma descriptors generated from a sensory descriptive analysis study: estery, honey, passionfruit, lemon-citrus and two palate properties:overall flavour and sweetness were selected for investigation. Calibration models between sensory properties and spectra were developed using partial least squares regression (PLS1 and PLS2) with cross validation. The correlation coefficients (R"c"a"l) were greater than 0.70 for estery, lemon and honey, and less than 0.50 for passionfruit, overall flavour and sweetness in both calibration and cross validation. Therefore, this work demonstrates that some relationships between sensory data and both visible and near infrared spectra exists to assess sensory properties in the white wine varieties. Further work will be carried out with a larger set of data including additional sensory properties in different white wine varieties in order to validate the method.

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Visible and Near Infrared Absorption Spectra of Human and Animal Haemoglobin: Determination and Application

About Visible and Near Infrared Absorption Spectra of Human and Animal Haemoglobin: Determination and Application detail

• Amazon Sales Rank: #2106846 in Books
• Published on: 2000-10-01
• Original language: English
• Number of items: 1
• Binding: Hardcover
• 368 pages

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The bright colour of haemoglobin has, from the very beginning, played a significant role in both the investigation of this compound as well as in the study of blood oxygen transport. Numerous optical methods have been developed for measuring haemoglobin concentration, oxygen saturation, and the principal dyshaemoglobins in vitro as well as in vivo. Modern applications include pulse oximeters, fibre optic oximeters, multiwavelength haemoglobin photometers (co-oximeters) and instruments for near infrared spectroscopy in vivo. Knowledge of the light absorption spectra of the common haemoglobin derivatives is a prerequisite for the development and understanding of these techniques. In the 1960s a reference method based on the absorptivity of a single derivative (haemiglobincyanide; HiCN) at a single wavelength (540 nm) was established for measuring the total haemoglobin concentration. Thus an anchor value was provided on which the absorptivity spectra of all other haemoglobin derivatives could be based. This monograph presents absorption spectra and absorptivity data in the wavelength range of 480 to 1000 nm of the major haemoglobin derivatives for human adult and foetal haemoglobin and for haemoglobin of several animals (cow, dog, horse, pig, rat, and adult and foetal sheep). A detailed description of the methods used to acquire these data has been included to allow future investigators to reproduce and expand on the data. The second part of the monograph includes chapters on the principles and development, in historical perspective, of the principal methods for measuring total haemoglobin concentration for two, three, and multi-component analysis of haemoglobin derivatives, and for blood oxygen saturation measurement. Accurate quantitative data pertaining to haemoglobin in human blood are presented, together with a description of methods for measuring haemoglobin oxygen capacity and oxygen affinity. These chapters have been written with a view to foster knowledge and insight concerning the principles, purposes, and limitations of the various methods of all who use these methods in research and patient care. This monograph should be of value and interest to researchers and postgraduates in clinical chemistry, human physiology, comparative physiology, clinical medicine and lab technology.

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Combination of mid- and near-infrared spectroscopy for the [An article from: Analytica Chimica Acta]

About Combination of mid- and near-infrared spectroscopy for the [An article from: Analytica Chimica Acta] detail

• Published on: 2006-07-07
• Format: HTML
• Binding: Digital
• 7 pages

Product Description

This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2006. 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 combination of infrared (MIR) and near-infrared (NIR) spectroscopy has been employed for the determination of important quality parameters of beers, such as original and real extract and alcohol content. A population of 43 samples obtained from the Spanish market and including different types of beer, was evaluated. For each technique, spectra were obtained in triplicate. In the case of NIR a 1mm pathlength quartz flow cell was used, whereas attenuated total reflectance measurements were used in MIR. Cluster hierarchical analysis was employed to select calibration and validation data sets. The calibration set was composed of 15 samples, thus leaving 28 for validation. A critical evaluation of the prediction capability of multivariate methods established from the combination of NIR and MIR spectra was made. Partial least squares (PLS) and artificial neural networks (ANN) were evaluated for the treatment of data obtained in each individual technique and the combination of both. Different parameters of each methodology were optimized. A slightly better predictive performance was obtained for NIR-MIR combined spectra, and in all the cases ANN performs better than PLS, which may be interpreted from the existence of some non-linearity in the data. The root-mean-sqare-error of prediction (RMSEP) values obtained for the combined NIR-MIR spectra for the determination of real extract, original extract and ethanol were 0.076% w/w, 0.14% w/w and 0.091% v/v.

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Permeation Studies of PVC Pipes with Near Infrared Spectroscopy: Using NIRS to Track Permeation and Predict Future Permeation Susceptibility

About Permeation Studies of PVC Pipes with Near Infrared Spectroscopy: Using NIRS to Track Permeation and Predict Future Permeation Susceptibility detail

• Published on: 2008-10-02
• Released on: 2008-10-02
• Original language: English
• Number of items: 1
• Binding: Paperback
• 96 pages

Product Description

Polyvinyl chloride (PVC) is commonly used for drinking water pipes. Although PVC is resistant to natural environmental conditions, organic solvents may attack the pipe wall causing swelling, softening, water lines failure and drinking water pollution. Permeation is linked to underground storage tanks and random accidental spills of organic solvents or fuel derivates. Although rare, several cases have been reported. The aim for this research was developing new laboratory methods for permeation testing and helping pipe companies in assessing about pipe selection in zones of high risk. Near infrared spectroscopy (NIRs) was selected as the methodology. NIR is already used in both organic solvents and polymer fields for both discriminative and quantitative analysis of organic compounds. The objective of the first study was to track the permeation of PVC pipes by two major organic solvents (toluene and benzene) at different concentrations developing partial least squares (PLS) calibrations. The second study lead to the correlation of the pipe permeation susceptibility in pure toluene to the pipe spectra usinglocally weighted regression (LWR).

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An empirical investigation of cross-sensor relationships of NDVI and red/near-infrared reflectance using EO-1 Hyperion data [An article from: Remote S

About An empirical investigation of cross-sensor relationships of NDVI and red/near-infrared reflectance using EO-1 Hyperion data [An article from: Remote Sensing of Environment] detail

• Format: HTML
• Binding: Digital

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This digital document is a journal article from Remote Sensing of Environment, 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:
Long term observations of global vegetation from multiple satellites require much effort to ensure continuity and compatibility due to differences in sensor characteristics and product generation algorithms. In this study, we focused on the bandpass filter differences and empirically investigated cross-sensor relationships of the normalized difference vegetation index (NDVI) and reflectance. The specific objectives were: 1) to understand the systematic trends in cross-sensor relationships of the NDVI and reflectance as a function of spectral bandpasses, 2) to examine/identify the relative importance of the spectral features (i.e., the green peak, red edge, and leaf liquid water absorption regions) in and the mechanism(s) of causing the observed systematic trends, and 3) to evaluate the performance of several empirical cross-calibration methods in modeling the observed systematic trends. A Level 1A Hyperion hyperspectral image acquired over a tropical forest-savanna transitional region in Brazil was processed to simulate atmospherically corrected reflectances and NDVI for various bandpasses, including Terra Moderate Resolution Imaging Spectroradiometer (MODIS), NOAA-14 Advanced Very High Resolution Radiometer (AVHRR), and Landsat-7 Enhanced Thematic Mapper Plus (ETM+). Data were extracted from various land cover types typically found in tropical forest and savanna biomes and used for analyses. Both NDVI and reflectance relationships among the sensors were neither linear nor unique and were found to exhibit complex patterns and bandpass dependencies. The reflectance relationships showed strong land cover dependencies. The NDVI relationships, in contrast, did not show land cover dependencies, but resulted in nonlinear forms. From sensitivity analyses, the green peak (~550 nm) and red-NIR transitional (680-780 nm) features were identified as the key factors in producing the observed land cover dependencies and nonlinearity in cross-sensor relationships. In particular, differences in the extents to which the red and/or NIR bandpasses included these features significantly influenced the forms and degrees of nonlinearity in the relationships. Translation of MODIS NDVI to ''AVHRR-like'' NDVI using a weighted average of MODIS green and red bands performed very poorly, resulting in no reduction of overall discrepancy between MODIS and AVHRR NDVI. Cross-calibration of NDVI and reflectance using NDVI-based quadratic functions performed well, reducing their differences to +/-.025 units for the NDVI and +/-.01 units for the reflectances; however, many of the translation results suffered from bias errors. The present results suggest that distinct translation equations and coefficients need to be developed for every sensor pairs and that land cover-dependency need to be explicitly accounted for to reduce bias errors.

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Multivariate calibration of near infrared spectra by orthogonal WAVElet correction using a genetic algorithm [An article from: Analytica Chimica Acta]

About Multivariate calibration of near infrared spectra by orthogonal WAVElet correction using a genetic algorithm [An article from: Analytica Chimica Acta] detail

• Format: HTML
• Binding: Digital

Product 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:
Orthogonal WAVElet correction (OWAVEC) is a pre-processing method aimed at simultaneously accomplishing two essential needs in multivariate calibration, signal correction and data compression, by combining the application of an orthogonal signal correction algorithm to remove information unrelated to a certain response with the great potential that wavelet analysis has shown for signal processing. In the previous version of the OWAVEC method, once the wavelet coefficients matrix had been computed from NIR spectra and deflated from irrelevant information in the orthogonalization step, effective data compression was achieved by selecting those largest correlation/variance wavelet coefficients serving as the basis for the development of a reliable regression model. This paper presents an evolution of the OWAVEC method, maintaining the first two stages in its application procedure (wavelet signal decomposition and direct orthogonalization) intact but incorporating genetic algorithms as a wavelet coefficients selection method to perform data compression and to improve the quality of the regression models developed later. Several specific applications dealing with diverse NIR regression problems are analyzed to evaluate the actual performance of the new OWAVEC method. Results provided by OWAVEC are also compared with those obtained with original data and with other orthogonal signal correction methods.

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Determination of water-soluble and total extractable polyphenolics in biomass, necromass and decomposing plant material using near-infrared reflectanc

About Determination of water-soluble and total extractable polyphenolics in biomass, necromass and decomposing plant material using near-infrared reflectance ... article from: Soil Biology and Biochemistry] detail

• Published on: 2005-04-01
• Format: HTML
• Binding: Digital

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This digital document is a journal article from Soil Biology and Biochemistry, published by Elsevier in 2005. 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:
Near infrared reflectance spectroscopy (NIRS) was used to predict the water-soluble and total extractable polyphenolics of plant material. Different life forms (forbs, grasses, shrubs, giant rosettes), organs (leaves, stems, roots) and decomposition stages (biomass, necromass and decomposing plant material) were studied. Prediction was good, with a R^2 in validation ranging from 0.91 to 0.93 and in prediction from 0.88 to 0.94. Various standard error ratios were used to assess the quality of the models, which are generally very good, being the model for predicting the water-soluble polyphenolics in the decomposing plant material the slightly less good. Because it is a cheap and rapid method, it would allow to perform a large screening for studies concerning (i) polyphenolics control on decomposition process and (ii) phenolics implication in herbivory.

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Near-infrared optical topography to assess activation of the parietal cortex during a visuo-spatial task [An article from: Neuropsychologia]

About Near-infrared optical topography to assess activation of the parietal cortex during a visuo-spatial task [An article from: Neuropsychologia] detail

• Published on: 2005-01
• Format: HTML
• Binding: Digital

Product Description

This digital document is a journal article from Neuropsychologia, published by Elsevier in 2005. 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:
Multi-channel near-infrared spectroscopy (NIRS) is a relatively new method to investigate the brain activation, based on changes in oxygenated haemoglobin (O"2Hb) and deoxygenated haemoglobin (HHb). Recently, it has been shown that NIRS seems to be able to detect even small changes in O"2Hb and HHb concentration due to cognitive demands. This study aimed at investigating the changes in O"2Hb and HHb concentrations of the parietal cortex during a spatial task, a modified version of the Benton Line Orientation Task [Gur, R. C., Alsop, D., Glahn, D., Petty, R., Swanson, C. L., Maldjian, J. A., et al. (2000). An fMRI study of sex differences in regional activation to a verbal and a spatial task. Brain & Language, 74(2), 157-170.]. Twenty-four subjects were measured with NIRS while they had to estimate the orientation of a given line or to name the colour of the line in the control condition. Both conditions consisted of three activation phases each lasting 30s, with a 10s baseline and a 20s post resting period. For assessing the changes in O"2Hb and HHb concentrations, we measured with 24 NIRS channels over the parietal cortex using the NIRS apparatus ETG-100 (Hitachi Medical Ltd.). O"2Hb concentration significantly increased during the active phase compared to the baseline for both conditions, but was significantly higher in the active phase for the line orientation condition compared to the colour naming condition bilaterally parieto-occipital. For the HHb concentrations, we only found significant decreases for both conditions but no differences between the conditions. The results of our study underscore the value of multi-channel NIRS for assessing cortical activation during cognitive tasks.

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Pharmaceutical and Medical Applications of Near-Infrared Spectroscopy (Practical Spectroscopy)

About Pharmaceutical and Medical Applications of Near-Infrared Spectroscopy (Practical Spectroscopy) detail

• Amazon Sales Rank: #1870455 in Books
• Published on: 2002-02-08
• Original language: English
• Number of items: 1
• Binding: Hardcover
• 208 pages

Product Description

This book discusses the theory, instrumentation, validation, and implementation of near-infrared spectroscopy for pharmaceutical and medical applications. It showcases a diverse range of contemporary methods for the production, screening, and analysis of new drug products and pharmaceuticals. Presents current approaches in near-infrared spectroscopy (NIR) to monitor and control multiple phases of the drug manufacturing process.

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