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Characterization of the Daguerreotype Using the Surface Metrology Instrumental Technique of Confocal Scanning Disk Microscopy
Sunday, August 01, 2010
Patrick Ravines
Surfaces, the two-dimensional outer boundary between the three-dimensional object and its environment,have many attributes and are perceived as the complex interplay of three factors: surrounding ...
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Simultaneous Determination of Hormone Residues in Aquatic Products by UPLC-ESI-MS-MS
Tuesday, June 01, 2010
Ying Jiang Xu
Xiu Hui Tian
Xiu Zhen Zhang
Xiang Hong Gong
Shi Juan Zhang
Hui Hui Liu
Li Min Zhang
Hormones, such as androgens (AS), estrogens (ES), and progestogens (PS), play an important role in organisms. AS, the main male sex steroids,which are the critical factors responsible for the ...
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Determining the Geologic Provenance of Tiny Obsidian Flakes in Archaeology Using Nondestructive EDXRF
Tuesday, June 01, 2010
Richard E. Hughes
The beginning of the 1960s witnessed the widespread introduction of physical sciences methods and techniques in archaeology. Along with instrumental neutron activation, X-ray fluorescence (XRF) ...
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A High-Resolution Ion Mobility Mass Spectrometry Platform for Breakthrough Discoveries in Life Science Research and the Pharmaceutical Industry
Saturday, May 01, 2010
Alistair Wallace
In recent years, the combination of liquid chromatography and high-resolution exact mass tandem mass spectrometry has been widely adopted for a variety of research applications such as drug ...
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Statistics in Analytical Chemistry: Part 38—Inexact Replicates
Tuesday, May 18, 2010
David Coleman
Lynn Vanatta
In this series of articles, all of the regression discussions to date have assumed that the replicate preparations of a given concentration have been exact.
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Structural, Compositional, and Topographical Characterization of Polystyrene Films Using High-Resolution Dielectric Spectroscopy
Friday, April 02, 2010
Terry C. Chilcott
Hans G.L. Coster
Jeffrey L. Ellis
Thin polymeric films and surfaces provide novel electrochemical, thermal, mechanical, and/or biocompatible features at the nanoscale level in the development of adhesives, protective coatings, ...
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Advances in Porous Layer Open Tubular Columns
Friday, April 02, 2010
Jaap de Zeeuw
Bill Bromps
Tom Vezza
Rick Morehead
Gary Stidsen
Porous layer open tubular (PLOT) columns have been very beneficial for solving application problems, especially for the analysis of volatile compounds. The columns’ high selectivity of adsorbents ...
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Accurate and Reliable Analysis of Beer Using Time-of-Flight Technology for Gas Chromatography
Friday, April 02, 2010
Nick Bukowski
Alcoholic beverages such as beer are derived from natural plant products and contain many hundreds of organic components. The taste and aroma of different beers give a particular brand its subjective ...
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Determination of Trace Elements in Rice Products Using Flame and Graphite Furnace Atomic Absorption Spectrometry
Monday, March 01, 2010
Hazel Dickson
Rice is the second most prevalent cereal crop in the world, with an annual global production of approximately 600 million tons. It is the staple food of most Asian countries, with a daily consumption ...
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Taking Advantage of the Electronics Evolution in the Laboratory
Monday, March 01, 2010
Trish Meek
Dennis Curran
The strategic and business importance of laboratory data has evolved tremendously over the past 25 years. Since the introduction of laboratory information management systems, laboratory staff has ...
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Pressurized Capillary Electrochromatography: Instrumentation, Columns, and Applications
Monday, February 01, 2010
Yi Wu
Yuhong Wang
Zhenzhen Zhao
Kongxian Wu
Yan Wang
Chao Yan
Capillary electrochromatography (CEC) is a miniaturized, hybrid separation technique that combines micro-high-performance liquid chromatography (µHPLC) and capillary electrophoresis (CE). The driving ...
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Environmental Applications of a UHPLC System: The Evolution of Chromatography
Monday, February 01, 2010
Imma Ferrer
E. Michael Thurman
Ultrahigh-performance liquid chromatography (UHPLC) has brought two important innovations to LC-MS analysis. First is the use of 1.8-µm columns, which provides an increase in plate number from the 5-...
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The Use of Magnetic Beads in Microfluidic Binding Assays and On-Chip Enzymatic Microreactions
Monday, February 01, 2010
Toni Ann Riveros
Roger Lo
Xiaojun Liu
Ariana Valdez
Marisa Lozano
Frank A. Gomez
Miniaturization has allowed for the development of a myriad of microfluidic platforms that offer a host of advantages over conventional analytical techniques, including small sample volume ...
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Statistics in Analytical Chemistry: Part 37—Deviations, Errors, and Intervals (Oh My!)
Thursday, February 18, 2010
David Coleman
Lynn Vanatta
For the past seven years, this column has chiefly presented basic material related to a single theme: regression analysis of analytical data and the associated uncertainty.
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New Solutions for Surface Texture Analysis
Monday, November 01, 2010
Barbara Foster
Most microscopists are familiar with confocal microscopy from neuroscience or cell biology. However, very quietly and abruptly, confocal has jumped the fence into industry, becoming a major tool-of-...
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Polymer Characterization Using Nanoscale Infrared Spectroscopy
Monday, November 01, 2010
Kevin Kjoller
Craig Prater
Roshan Shetty
Despite its widespread applications, infrared microspectroscopy has fundamental spatial resolution limits set by both the laws of optics and practical design constraints.
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Breaking the Sample Preparation Bottleneck With a New Approach to Microwave Digestion
Monday, November 01, 2010
Tim Michel
Closed-vessel microwave digestion is widely recognized as the most effective technique for the digestion of samples for metals analysis by graphite furnace atomic absorption (GFAA), inductively ...
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Characterizing Nanometer-Scale Materials Using a Low-Angle Backscattered Electron Detector
Monday, November 01, 2010
Craig S. Schwandt
Understanding the properties of new materials prior to fabrication can be challenging. Often, the structure of a material at very small scales is critical to its properties and performance.
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Automatable Processes and Future Directions in Dried Blood Spot Analysis
Friday, October 01, 2010
Chester Bowen
The application of dried blood spots (DBS) for the storage, shipment, and quantification of xenobiotics has been gaining popularity in recent years. The invention of this technology can be attributed ...
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Strategy for Improving HPLC Retention Time Prediction Accuracy Using Chromatography Simulation Software
Friday, October 01, 2010
Alexey Makarov
Zhi Chen
Fred Chan
Rekha Bhashyam
Rosario LoBrutto
Raju Vegesna
The introduction of Quality by Design, a systematic approach to product and process design and development, has shifted the paradigm in HPLC methods development from a retrospective approach to a ...
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