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Showing 1 to 15 of 60 results Save | Export
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Vestal, Marvin L. – Science, 1984
Reviews techniques for online coupling of high-performance liquid chromatography with mass spectrometry, emphasizing those suitable for application to nonvolatile samples. Also summarizes the present status, strengths, and weaknesses of various techniques and discusses potential applications of recently developed techniques for combined liquid…
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
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Maciel, Gary E. – Science, 1984
Examines recent developments in techniques for obtaining high-resolution nuclear magnetic resonance (NMR) spectra on solid samples, discussing the kinds of applications for which these techniques are well suited. Also discusses the characteristics of NMR of solids and generating magnetization for NMR in solids. (JN)
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
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Duschl, Richard – Journal of Research in Science Teaching, 1989
This paper criticizes the Yeany, Yap, and Padilla paper (1986). Questions the internal consistency about hierarchical relationships of integrated processes and cognitive reasoning concerning procedures used for the generation of subhierarchies, instrumentation used to assess the process skills, and rigor of lexicon. (YP)
Descriptors: Cognitive Processes, Formal Operations, Instrumentation, Process Education
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Salit, M. L.; Parsons, M. L. – Analytical Chemistry, 1985
Software-driven instrumentation makes measurements that demand a computer as an integral part of either control, data acquisition, or data reduction. The structure of such instrumentation, hardware requirements, and software requirements are discussed. Examples of software-driven instrumentation (such as wavelength-modulated continuum source…
Descriptors: Chemical Analysis, Chemistry, College Science, Computer Software
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McLafferty, Fred W. – Science, 1984
Examines trends in methods for deriving chemical information from a variety of systems and environments, focusing on improvements in sensitivity, specificity, speed and simplicity, and in sampling. Indicates that the increasing importance of analytical instrumentation requires reexamination of its coverage in educational curricula. (JN)
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
Peer reviewed Peer reviewed
Gross, Michael L.; Rempel, Don L. – Science, 1984
Discusses the nature of Fourier transform mass spectrometry and its unique combination of high mass resolution, high upper mass limit, and multichannel advantage. Examines its operation, capabilities and limitations, applications (ion storage, ion manipulation, ion chemistry), and future applications and developments. (JN)
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
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Zare, Richard N. – Science, 1984
Reviews applications of laser methods to analytical problems, selecting examples from multiphoton ionization and fluorescence analysis. Indicates that laser methodologies promise to improve dramatically the detection of trace substances embedded in "real" matrices, giving the analyst a most powerful means for determining the composition of…
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
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Hunkapiller, Michael W.; And Others – Science, 1984
Describes the nature and capabilities of methods used to characterize protein and peptide structure, indicating that they have undergone changes which have improved the speed, reliability, and applicability of the process. Also indicates that high-performance liquid chromatography and gel electrophoresis have made purifying proteins and peptides a…
Descriptors: Biochemistry, Chemical Analysis, College Science, Enzymes
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Strauser, David R.; Berven, Norman L. – Rehabilitation Counseling Bulletin, 2006
The purpose of this study was to develop an instrument, the "Job Seeking Self-Efficacy Scale," to measure perceived self-efficacy in job-seeking activities. The construction of the instrument, which incorporated tasks that have been determined to be important in job seeking for individuals with disabilities, was based on Bandura's theory of…
Descriptors: Measures (Individuals), Program Evaluation, Rehabilitation Counseling, Field Tests
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Meuzelaar, Henk L. C.; And Others – Science, 1984
Illustrates the state of the art in pyrolysis mass spectrometry techniques through applications in: (1) structural determination and quality control of synthetic polymers; (2) quantitative analysis of polymer mixtures; (3) classification and structural characterization of fossil organic matter; and (4) nonsupervised numerical extraction of…
Descriptors: Biology, Chemical Analysis, Chemistry, College Science
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Budinger, Thomas F.; Lauterbur, Paul C. – Science, 1984
Reports on the status of nuclear magnetic resonance (NMR) from theoretical and clinical perspectives, reviewing NMR theory and relaxation parameters relevant to NMR imaging. Also reviews literature related to modern imaging strategies, signal-to-noise ratio, contrast agents, in vivo spectroscopy, spectroscopic imaging, clinical applications, and…
Descriptors: Chemical Analysis, Chemistry, Clinical Diagnosis, College Science
Arena, Carolyn B. – 1994
For several decades there has been a general concern that the level of research funding for academic instrumentation was not sufficient to keep pace with the requirements of cutting edge research. To develop the factual trend data necessary to understand the depth of the problems in academia and thus provide an adequate response to these concerns,…
Descriptors: Higher Education, Instrumentation, Needs Assessment, Research
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Jorgenson, James W. – Science, 1984
Discusses recent developments in the instrumentation and practice of analytical scale operations. Emphasizes detection devices and procedures in gas chromatography, liquid chromatography, electrophoresis, supercritical fluid chromatography, and field-flow fractionation. (JN)
Descriptors: Biology, Chemical Analysis, Chemistry, Chromatography
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Hirschfeld, T.; And Others – Science, 1984
Discusses: (1) rationale for chemical sensors in process analysis; (2) existing types of process chemical sensors; (3) sensor limitations, considering lessons of chemometrics; (4) trends in process control sensors; and (5) future prospects. (JN)
Descriptors: Chemical Analysis, Chemistry, College Science, Computer Oriented Programs
Peer reviewed Peer reviewed
Poole, Colin F.; Poole, Salwa K. – Analytical Chemistry, 1989
Some of the important modern developments of thin-layer chromatography are introduced. Discussed are the theory and instrumentation of thin-layer chromatography including multidimensional and multimodal techniques. Lists 53 references. (CW)
Descriptors: Chemical Analysis, Chemistry, Chromatography, College Science
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