Download or read book Computer Simulation of Reversed Phase Liquid Chromatography Using the Craig Model written by M. J. Byrne and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computer Simulations for Reversed phase High Performance Liquid Chromatography of Selected Classes of Compounds written by Diana D. Lisi and published by . This book was released on 1991 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematical Modeling and Scale up of Liquid Chromatography written by Tingyue Gu and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid chromatography has proved to be one of the most important tools for separations. Rapid development in biotechnology has increased the demand for chromatography in analytical, preparative and large scale applications. The understanding of the dynamics of chromatography is imperative for the scale-up. This book is a systematic treatment of the general rate models for various forms of liquid chromatography including adsorption, size exclusion, affinity, reversed phase, hydrophobic interaction, and radial flow chromatography. Thermodynamic and mass transfer effects in liquid chromatography are discussed. Applications of computer programs for the rate models are described and the procedures for the scale-up of preparative- and large-scale liquid chromatography using the general rate models are given.
Download or read book Mathematical Modeling and Scale Up of Liquid Chromatography written by Tingyue Gu and published by Springer. This book was released on 2015-04-06 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tingyue Gu's second edition provides a comprehensive set of nonlinear multicomponent liquid chromatography (LC) models for various forms of LC, such as adsorption, size exclusion, ion-exchange, reversed-phase, affinity, isocratic/gradient elution and axial/radial flow LC. Much has advanced since the first edition of this book and the author's software, described here, is now used for teaching and research in 32 different countries. This book comes together with a complete software package with graphical user interface for personal computers, offered free for academic applications. Additionally, this book provides detailed methods for parameter estimation of mass transfer coefficients, bed voidage, particle porosity and isotherms. The author gives examples of how to use the software for predicitons and scale-up. In contrast to the first edition, authors do not need to deal with complicated math. Instead, they focus on how to obtain a few parameters for simulation and how to compare simulation results with experimental data. After reading the detailed descriptions in the book, a reader is able to use the simulation software to investigate chromatographic behavior without doing actual experiments. This book is aimed at readers who are interested in learning about LC behaviors and at those who want to scale up LC for preparative- and large-scale applications. Both academic personnel and industrial practitioners can benefit from the use of the book. This new edition includes: - New models and software for pellicular (cored) beads in liquid chromatography - Introduction of user-friendly software (with graphical user interface) - Detailed descriptions on how to use the software - Step-by-step instructions on parameter estimation for the models - New mass-transfer correlations for parameter estimation - Experimental methods for parameter estimation - Several actual examples using the model for product development and scale-up - Updated literature review
Download or read book Chromatographic and Membrane Processes in Biotechnology written by C.A. Costa and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Separation processes in biotechnology are of increasing industrial importance since they entail the major costs of bioprocessing especially when high purity is required. Chromatography and membranes are two of the most important technologies used for direct treatment of fermentation broths as well as for high resolution steps in product purification. The theoretical foundations of chromatographic and membrane processes are well understood for the case of small molecules. Nevertheless there is a need to adapt and further develop that knowledge to the processing of large biological molecules. This is being achieved with the contribution of other areas like molecular biology and materials science. The objective of this NATO Advanced Study Institute is to present an updated treatment of the fundamentals of chromatographic and membrane processes with special relevance in bioprocessing.This volume collects the lectures presented at this Institute. The lectures are arranged in five chapters. Chapter I deals with chromatographic processes covering topics like equilibrium, kinetics and contacting devices. Membrane processes and some applications in biotechnology are treated in chapter 2. Chapter 3 is devoted to affinity chromatographic and membrane processes. Chapter 4 considers the current developments on chromatographic supports and membranes both from the constitutive materials and form points of view. Scale-up, optimization and reaction/separation integration are the topics covered in chapter 5. We are very grateful to all lecturers and participants that made possible this Institute. Financial support from NATO Scientific Affairs Division, INIC, JNICT, FLAD, University of Ac;ores and DRT Ac;ores is gratefully acknowledged.
Download or read book Process Scale Liquid Chromatography written by Ganapathy Subramanian and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the industrial chromatographer and production scientist with a comprehensive account of process scale liquid chromatography. The basic theory is presented, guiding the reader through system design, simulation and modelling techniques, giving due consideration to economic aspects, as well as safety and regulatory factors. A thorough, up-to-date survey of current techniques and media does stress their advantages and limitations in such a way as to faciliate their application to real-life problems. In view of rapid rate of development in industrial chromatography one chapter provides an assessment of future developments. The chapters are written by acknowledged experts from Europe and the United States.
Download or read book Computer Aided Chromatography and an Equilibrium Model for Buffer Effects in Reversed phase Liquid Chromatography written by John H. Nickel and published by . This book was released on 1984 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular level Insights Into Reversed phase Liquid Chromatographic Systems Via Monte Carlo Simulation written by Jake Leland Rafferty and published by . This book was released on 2009 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Application of New Models for Reversed Phase Liquid Chromatography written by William Phillip Price and published by . This book was released on 1982 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of General Purpose Liquid Chromatography Simulator for the Exploration of Novel Liquid Chromatographic Strategies written by Lena N. Jeong and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The method development process in liquid chromatography (LC) involves optimization of a variety of method parameters including stationary phase chemistry, column temperature, initial and final mobile phase compositions, and gradient time when gradient mobile phases are used. Here, a general simulation program to predict the results (i.e., retention time, peak width and peak shape) of LC separations, with the ability to study various complex chromatographic conditions is described. The simulation program is based on the Craig distribution model where the column is divided into discrete distance ([delta]z) and time ([delta]t) segments in a grid and is based on parameterization with either the linear solvent strength or Neue-Kuss models for chromatographic retention. This algorithm is relatively simple to understand and produces results that agree well with closed form theory when available. The set of simulation programs allows for the use of any eluent composition profile (linear and nonlinear), any column temperature, any stationary phase composition (constant or non-constant), and any composition and shape of the injected sample profile. The latter addition to our program is particularly useful in characterizing the solvent mismatch effect in comprehensive two-dimensional liquid chromatography (2D-LC), in which there is a mismatch between the first dimension (1D) effluent and second dimension (2D) initial mobile phase composition. This solvent mismatch causes peak distortion and broadening. The use of simulations can provide a better understanding of this phenomenon and a guide for the method development for 2D-LC. Another development that is proposed to have a great impact on the enhancement of 2D-LC methods is the use of continuous stationary phase gradients. When using rapid mobile phase gradients in the second dimension separation with diode array detection (DAD), refractive index changes cause large backgrounds such as an injection ridge (from solvent mismatch) and sloping baselines which can be problematic for achieving accurate quantitation. Use of a stationary phase gradient may enable the use of an isocratic mobile phase in the 2D, thus minimizing these background signals. Finally, our simulator can be used as an educational tool. Unlike commercially available simulators, our program can capture the evolution of the chromatogram in the form of movies and/or snapshots of the analyte distribution over time and/or distance to facilitate a better understanding of the separation process under complicated circumstances. We plan to make this simulation program publically available to all chromatographers and educators to aid in more efficient method development and chromatographic training.
Download or read book Cambridge Scientific Biochemistry Abstracts written by and published by . This book was released on 1989 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biotechnology Progress written by and published by . This book was released on 1991 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigating a Model Reversed phase Liquid Chromatography Stationary Phase with Vibrationally Resonant Sum Frequency Generation Spectroscopy written by Arthur D. Quast and published by . This book was released on 2011 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reversed-phase liquid chromatography (RPLC) is a widely used technique for analytical separations but routinely requires empirical optimization. Gaining a better understanding of the molecular reasons for retention may mean more efficient separations with fewer trial and error runs to obtain optimized separations. Vibrationally resonant sum frequency generation (VR-SFG) is a surface specific technique that has allowed for in situ examination of model RPLC stationary phases under various solvent and pressure conditions. In order to improve on past work with model RPLC stationary phases two challenges had to be overcome. First, improved vibrational mode assignments of the C18 stationary phase were needed for proper understanding of this model system. Second, the synthesis of back-surface reference mirrors used in these VR-SFG experiments allowed us to better correct the relative intensities of the various spectral peaks present in typical spectra. After examination of model RPLC systems under various conditions, we have found that these model substrates have a significant amount of interference from nonresonant signal. This interference of resonant and nonresonant signals on fused silica surfaces has not been previously examined and further studies of the model RPLC stationary phase must properly deal with the non-negligible nonresonant interference that is present. We have seen changes in the VR-SFG spectra of these model systems under a variety of conditions including elevated pressure, however the changes are mostly due to nonresonant interference. These spectral changes, although apparently not solely from structural changes, need to be investigated further to better understand the molecular basis of retention in model RPLC systems.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1989 with total page 1412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Retention Prediction in Reversed phase Liquid Chromatography Using Factor Analytical Modeling written by Su-Hsiu Hsu and published by . This book was released on 1994 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reversed Phase High Performance Liquid Chromatography written by Ante M. Krstulovic and published by . This book was released on 1982-05-04 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive problem-solving approach to reversed-phase high-performance liquid chromatography covering the theoretical aspects and practical information needed in diverse areas of research. Also reviews RPLC applications in the biomedical/biochemical field.
Download or read book Nutrition Abstracts and Reviews written by and published by . This book was released on 1988 with total page 1580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
