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HPLC of Polymers (Springer Laboratory)
Harald Pasch , and
Bernd Trathnigg
Manufacturer: Springer
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Handbook of Modern Sensors: Physics, Designs, and Applications (Handbook of Modern Sensors)
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Structure Determination of Organic Compounds: Tables of Spectral Data
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Principles of Fluorescence Spectroscopy
ASIN: 3540655514 |
Book Description
Polymers are mainly characterized by molar mass, chemical composition, functionality and architecture. The determination of the complex structure of polymers by chromatographic and spectroscopic methods is one of the major concerns of polymer analysis and characterization. This lab manual describes the experimental approach to the chromatographic analysis of polymers. Different chromatographic methods, their theoretical background, equipment, experimental procedures and applications are discussed. The book will enable polymer chemists, physicists and material scientists as well as students of macromolecular and analytical science to optimize chromatographic conditions for a specific separation problem. Special emphasis is given to the description of applications for homo- and copolymers and polymer blends.
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Biopolymers/Non-Exclusion Hplc (Advances in Polymer Science)
J. D. Andrade
Manufacturer: Springer
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ASIN: 0387164227 |
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Gradient Hplc of Copolymers and Chromatographic Cross-Fractionation
Gottfried Glockner
Manufacturer: Springer
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ASIN: 0387527397 |
Book 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:
In this study, a polymer monolith microextraction (PMME) using a poly (methacrylic acid-ethylene glycol dimethacrylate) (MAA-EGDMA) monolith in conjunction with high-performance liquid chromatography (HPLC) was developed for the determination of 2,4-dinitrophenylhydrazine (DNPH) derivatives of several aldehydes in human saliva. The conditions for the labeling reactions of aldehydes with DNPH and followed extraction of the derivatives were optimized. The precision, recovery and detection limits were evaluated with spiked saliva. The limits of detection ranged from 0.43 to 1.40@mg/L. The inter-and intra-day relative standard deviations were less than 10%. The proposed method was successfully applied to the determination of aldehydes in saliva samples from a non-smoker, a passive smoker and a heavy smoker.
Book 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.
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Silica-supported poly(octadecylacrylate) (Sil-ODA"n), polymeric octadecylsilyl silica (polymeric ODS), and monomeric octadecylsilyl silica (monomeric ODS) were studied by a combination of suspension-state ^1H NMR and solid-state ^1^3C CP/MAS-NMR to probe the mechanisms underlying their functions as stationary phases for RP-HPLC. Sil-ODA"n, with a strong temperature dependent separation behaviour showed correspondent temperature dependent manifestations in both suspension-state ^1H NMR and solid-state ^1^3C CP/MAS-NMR experiments. With a gradual increase in temperature, intensity of proton signals (^1H NMR) of octadecyl moieties (mainly methylene groups) rose dramatically. This dramatic rise was at the same temperature of an endothermic peak detectable in its DSC thermogram indicating a relatively complete solid to liquid phase transition. In addition temperature dependencies of the ratio of trans to gauche conformed well to temperature dependencies of the separation factor between naphthacene and triphenylene (as a simple indicator of shape selectivity). Therefore NMR spectra of Sil-ODA"n were used as a reference for ascertaining percentage of octadecyl moieties of liquid type mobility in the two other stationary phases. Using this method we determined percentage of liquid phase in polymeric ODS and monomeric ODS at various temperatures. We suggest a combination of suspension-state ^1H NMR and solid-state ^1^3C CP/MAS-NMR for structure-dynamic characterization of various kinds of hydrocarbon chains grafted onto the silica particles.
Book 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.
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To detect a low level of acetylcholine (Ach) output in the dialysate of rat frontal cortex, osmium-peroxidase redox polymer modified gold-ring disk electrode (Os-HRP-RDE) was fabricated in high-performance liquid chromatography (HPLC)-electrochemical detection (ECD). In comparison with platinum electrode, the sensitivity of acetylcholine detection by Os-HRP-RDE was stable during a day, the coefficient of variation was 0.95%, and the decrease of the sensitivity for 1 week was 5.4%. The Os-HRP-RDE could detect lower than 3fmol of acetylcholine. The present technique, in the absence of acetylcholinesterase (AchE) inhibitor, is useful to facilitate physiological investigations of cholinergic neuronal activity in the brain.
Book Description
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:
Polyvinylidenefluoride (fluorocarbon polymer sorbent) with surface area 8.4m^2g^-^1 and particle size 15-30@mm was used for on-line SPE-HPLC determination of naphthalene, biphenyl, acenaphthene, anthracene and pyrene in natural water. Desorption eluent flow rates were varied from 0.50 to 1.75mlmin^-^1 and the volume of analyte-containing eluent stream zone was 0.10-0.11ml, while empty preconcentration column volume is 0.10ml. Detection limits of SPE-HPLC method were established: 5ngl^-^1 (biphenyl), 7ngl^-^1 (anthracene), 8ngl^-^1 (acenaphthene), 30ngl^-^1 (pyrene), 40ngl^-^1 (naphthalene), using UV spectrophotometric detection. Several samples of natural and potable water were spiked with mixture of PAHs, thus validating the proposed technique.
Book Description
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:
Silica particles have been used as supports for the preparation of three different propazine-imprinted polymer formats. First format refers to grafting of thin films of molecularly imprinted polymers (MIPs) using an immobilised iniferter-type initiator (inif-MIP). The other two new formats were obtained by complete filling of the silica pores with the appropriate polymerisation mixture leading to a silica-MIP composite material (c-MIP) followed by the dissolution of the silica matrix resulting in spherical MIP beads (dis-MIP). These techniques offer a mean of fine-tuning the particle morphology of the resulting MIP particles leading to enhanced capacity in chromatographic applications. Porous silica (specific surface area S=380m^2g^-^1, particle size p"s=10@mm, pore volume V"p=1.083mlg^-^1 and pore diameter d"p=10.5nm), methacrylic acid and ethylenglycol dimethacrylate were used for the preparation of the materials. All the MIP formats imprinted with propazine have been characterised by elemental analysis, FT-IR spectroscopy, nitrogen adsorption and scanning electron microscopy. Further, the materials were assessed as stationary phases in HPLC. Capacity factors, imprinting factors and theoretical plate numbers were calculated for propazine and other related triazines in order to compare the chromatographic properties of the three different stationary phases. For the inif-MIPs the column efficiency depended strongly on the amount of grafted polymer. Thus, only the polymers grafted as thin films of ca. 1.3nm average thickness show imprinting effects and the highest column efficiency giving plate numbers (N) of 1600m^-^1 for the imprinted propazine. The performance of the c-MIP stationary phase decreases as result of the complete pore filling after polymerisation and increases again after the removal of the silica matrix due to a better mass transfer in the porous mirror-image resulting polymer. From this study can be concluded that the inif-MIP shows the best efficiency for use as stationary phase in HPLC for the separation of triazinic herbicides.
Book Description
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 synthetic receptors for cocaine, deoxyephedrine, methadone and morphine were computationally designed and produced using molecular imprinting. The structure and energy of the molecular complexes were analysed by computational techniques. The possible structures of the binding sites in the synthetic receptors have been compared with those of corresponding natural receptors. The composition of imprinted polymers was optimised to allow adequate performance under the same experimental conditions. All selected molecular imprinting polymers (MIPs) demonstrated stronger affinity in comparison with corresponding blank polymers resulting in imprinted factors (I) equal to 1.2 (cocaine), 2.5 (deoxyephedrine), 3.5 (methadone) and 3 (morphine) which suggested that the specific binding site for each molecule was successfully created. The polymers studied possessed good selectivity and affinity towards their templates and could be recommended for the integration with sensor devices. From a practical point of view, especially for multisensor requirements, the synthetic receptors based on imprinted polymers could be superior to natural receptors due to their stability, robustness and compatibility with automation processes required for sensor fabrication.
Average customer rating:
- Too simple a text
- This a good book to have on your refrence shelf
- worst index on the planet
- Good book, but be careful.
- a famous book, but maybe it doesn't give us more advice
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Genes VI
Benjamin Lewin
Manufacturer: Oxford University Press, USA
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Binding: Hardcover
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Molecular Biology of the Cell
ASIN: 0198577796 |
Book Description
Rapid advances in the field of molecular genetics have occurred since Genes V was first published in 1993. Reflecting these advances, GENES VI has been thoroughly updated with the latest thinking and research in the field. The content of GENES VI has been extensively updated and restructured
throughout. There are fewer tables and those that remain have been simplified. Many figures have been redrawn and many replaced to present key concepts more distinctly than ever before. With a revised full color design, dozens of new figures, a more extensive list of suggested readings, the support
of companion CD-ROM software, and a 360-question problem set, this widely used volume provides the most current and comprehensive information available in genetics today.
Customer Reviews:
Too simple a text.......2000-01-22
I have found Genes VI, as well as previous editions, to be teeming with errors on almost every page. In addition, its index (as others have pointed out) is absolutely unhelpful because it is too general. In other words, one would have better luck finding a topic by flipping through the book than by utilizing the index. The format of the text seems elementary and Lewin does not go into much technical detail. Therefore, I think this book is most likely suited for an molecular biology course for non-science majors, or as supplemental reading in an upper level biology course.
This a good book to have on your refrence shelf.......1999-12-14
This book gives a good view of the mechanics of cellular genetics and has been helpful in a pinch as a refresher when looking at the basics of gene regulation etc... Maybe some of the data is off but if you are looking for information related to Molecular Biology in only one refrence text, then you have more to worry about than inconsistent data, all texts have errors here and there, this book is no exception. Let's not forget that science evolves, and as we learn more about the mechanisims that regulate cellular genetics some theories and data become useless. All in all it serves its puropse well as a teaching text and as an added source of refrence materal, I would recommend it to a fellow researcher.
worst index on the planet.......1999-11-25
This book is rife with errors, is poorly written (and verbosely so) and has the worst index of any book half its size. My only wish is that I could give it less than one star. If Ben Lewin spent more time editing his book, and less time on pretty, inaccurate figures, he might have succeeded in producing a book worth buying. As it is, it is little more than trash.
Good book, but be careful........1999-11-08
I found that this book was a wonderful book for learning just above the basics of cellular genetics and gene regulation, but was better when not used alone. Keep an eye out in the first two to three chapters for several mistakes.
a famous book, but maybe it doesn't give us more advice.......1999-10-30
This edit doesn't give us more new knowlidge. The editor put out the book every three years. Maybe it it too fast.
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A Student Companion and Workbook for Genes VI
Benjamin Lewin ,
Martin G. Klotz , and
Paul G. Siliciano
Manufacturer: Oxford University Press, USA
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ASIN: 0198578148 |
Book Description
This companion is designed to use with Genes VI by Benjamin Lewin. It helps students to make the best use of their study-time as they progress through the main text. The companion follows the organization of that book closely. For each Part there is a summary of the basic themes, and for each
chapter there are six basic sections: (1) Multiple-choice questions; (2) Suggested additional reading; (3) A checklist of key terms; (4) Concept questions; (5) Problems; (6) Summary worksheets (presented as a fill-in-the-blank exercise). Full answers are provided for all these at the end of the
book, The book will be an invaluable resource for students using the main text as part of an undergraduate course in genetics. use of their study-time.
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GENES VI
Benjamin LEWIN
Manufacturer: Oxford University Press, USA
ProductGroup: Book
Binding: Paperback
ASIN: B000OKV5SC |
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Practical Molecular Virology (Methods in Molecular Biology)
Mary K. Collins
Manufacturer: Humana Press
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Binding: Paperback
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ASIN: 089603299X |
Book Description
Mary K. L. Collins has assembled in Practical Molecular Virology a vanguard collection of readily repeatable methods for gene transfer and expression using a variety of recombinant viral vectors.
In keeping with the established tradition of the series, each technique is presented in an easy-to-follow format designed to work for the novice as well as the seasoned expert. Chapters cover: • life cycles of specific retroviruses and how recombinant vectors are constructed • PCR techniques • poliovirus vectors • herpesvirus vectors • syncytial assays • cell lineage studies • baculovirus and adenovirus vectors • SV40 and EBV vectors • viruses in gene transfer to eukaryotic cells
The wealth of material devoted to recombinant retroviral methods and their applications make Practical Molecular Virology and extremely timely volume, one that will find widespread use throughout biological and biomedical research.
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Regulation of Gene Expression in Animal Viruses (Nato Science Series: A:)
Manufacturer: Springer
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Binding: Hardcover
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ASIN: 0306444089 |
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Symposium VI: Dream analysis
Gene Savoy
Manufacturer: International Community of Christ
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Binding: Unknown Binding
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ASIN: B000737F76 |
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Transactions on Computational Systems Biology VI (Lecture Notes in Computer Science)
Manufacturer: Springer
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ASIN: 3540457798 |
Book Description
The LNCS journal Transactions on Computational Systems Biology is devoted to inter- and multidisciplinary research in the fields of computer science and life sciences and supports a paradigmatic shift in the techniques from computer and information science to cope with the new challenges arising from the systems oriented point of view of biological phenomena.
This book, the 6th volume in the Transactions on Computational Systems Biology series, edited by Gordon Plotkin, contains a fully-refereed selection of papers from the Fourth International Conference on Computational Methods in Systems Biology, CMSB 2005, held in Edinburgh, Scotland, in April 2005, as part of ETAPS 2005.
The 10 papers selected for this special issue are devoted to various aspects of computational methods, algorithms and techniques in bioinformatics. They present recent progress in areas such as very complex networks in living systems, including: regulatory networks for gene expression; intracellular metabolic networks; and both intra- and intercellular communication networks. The CMSB conference is intended to catalyze the convergence between modelers (theoretical computer scientists from fields such as language design, concurrency theory or program verification, mathematicians and physicists) and biologists interested in a systems-level understanding of cellular processes.
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- Ice Cream
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- Laboratory Manual for General, Organic, and Biological Chemistry
- Large Eddy Simulation for Incompressible Flows: An Introduction (Scientific Computation)
- Le Corbusier: La Villa Savoye / The Villa Savoye (Le Corbusier Guides (englisch/französisch))
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![Determination of low-aliphatic aldehyde derivatizatives in human saliva using polymer monolith microextraction coupled to high-performance liquid chromatography ... [An article from: Analytica Chimica Acta]](http://ec1.images-amazon.com/images/I/11X3K2HNNQL.jpg)