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1. |
Record Nr. |
UNINA9910454284003321 |
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Autore |
McRae Robert Grant |
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Titolo |
Resistance and revolution [[electronic resource] ] : Vaclav Havel's Czechoslovakia / / Rob McRae |
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Pubbl/distr/stampa |
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Ottawa [Ont.], : Carleton University Press, c1997 |
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Descrizione fisica |
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Disciplina |
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Soggetti |
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Electronic books. |
Czechoslovakia History 20th century |
Czechoslovakia Politics and government 1989-1992 |
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Lingua di pubblicazione |
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Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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2. |
Record Nr. |
UNINA9910830685003321 |
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Titolo |
HPLC made to measure [[electronic resource] ] : a practical handbook for optimization / / edited by Stavros Kromidas |
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Pubbl/distr/stampa |
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Weinheim, : Wiley-VCH |
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[Chichester, : John Wiley, distributor], c2006 |
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ISBN |
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1-281-31169-3 |
9786611311698 |
3-527-61197-5 |
3-527-61199-1 |
9783527313778 |
9783527611973 |
9783527611997 |
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Descrizione fisica |
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1 online resource (789 p.) |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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High performance liquid chromatography - Methodology |
Liquid chromatography |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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HPLC Made to Measure; Foreword; Preface; Contents; List of Contributors; Structure of the Book; 1 Fundamentals of Optimization; 1.1 Principles of the Optimization of HPLC Illustrated by RP-Chromatography; 1.1.1 Before the First Steps of Optimization; 1.1.2 What Exactly Do We Mean By "Optimization"?; 1.1.3 Improvement of Resolution ("Separate Better"); 1.1.3.1 Principal Possibilities for Improving Resolution; 1.1.3.2 What has the Greatest Effect on Resolution?; 1.1.3.3 Which Sequence of Steps is Most Logical When Attempting an Optimization?; 1.1.3.4 How to Change k, α, and N |
1.1.3.4.1 Isocratic Mode1.1.3.4.2 Gradient Mode; 1.1.3.4.3 Acetonitrile or Methanol?; 1.1.4 Testing of the Peak Homogeneity; 1.1.5 Unknown Samples: "How Can I Start?"; Strategies and Concepts; 1.1.5.1 The "Two Days Method"; 1.1.5.2 "The 5-Step Model"; 1.1.6 Shortening of the Run Time ("Faster Separation"); 1.1.7 Improvement of the Sensitivity ("To |
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See More", i.e. Lowering of the Detection Limit); 1.1.8 Economics in HPLC ("Cheaper Separation"); 1.1.9 Final Remarks and Outlook; References; 1.2 Fast Gradient Separations; 1.2.1 Introduction; 1.2.2 Main Part; 1.2.2.1 Theory; 1.2.2.2 Results |
1.2.2.2.1 General Relationships1.2.2.2.2 Short Columns, Small Particles; 1.2.2.2.3 An Actual Example; 1.2.2.3 Optimal Operating Conditions and Limits of Currently Available Technology; 1.2.2.4 Problems and Solutions; 1.2.2.4.1 Gradient Delay Volume; 1.2.2.4.2 Detector Sampling Rate and Time Constant; 1.2.2.4.3 Ion Suppression in Mass Spectrometry; References; 1.3 pH and Selectivity in RP-Chromatography; 1.3.1 Introduction; 1.3.2 Main Section; 1.3.2.1 Ionization and pH; 1.3.2.2 Mobile Phase and pH; 1.3.2.2.1 Buffer Capacity |
1.3.2.2.2 Changes of pK and pH Value in the Presence of an Organic Solvent1.3.2.3 Buffers; 1.3.2.3.1 Classical HPLC Buffers; 1.3.2.3.2 MS-Compatible pH Control; 1.3.2.4 Influence of the Samples; 1.3.2.4.1 The Sample Type: Acids, Bases, Zwitterions; 1.3.2.4.2 Influence of the Organic Solvent on the Ionization of the Analytes; 1.3.3 Application Example; 1.3.4 Troubleshooting; 1.3.4.1 Reproducibility Problems; 1.3.4.2 Buffer Strength and Solubility; 1.3.4.3 Constant Buffer Concentration; 1.3.5 Summary; References; 1.4 Selecting the Correct pH Value for HPLC; 1.4.1 Introduction |
1.4.2 Typical Approaches to pH Selection1.4.3 Initial pH Selection; 1.4.4 Basis of pK(a) Prediction; 1.4.5 Correction of pH Based on Organic Content; 1.4.6 Optimization of Mobile Phase pH Without Chemical Structures; 1.4.7 A Systematic Approach to pH Selection; 1.4.8 An Example - Separation of 1,4-Bis[(2-pyridin-2-ylethyl)thio]butane-2,3-diol from its Impurities; 1.4.9 Troubleshooting Mobile Phase pH; 1.4.10 The Future; 1.4.11 Conclusion; References; 1.5 Optimization of the Evaluation in Chromatography; 1.5.1 Evaluation of Chromatographic Data - An Introduction; 1.5.2 Working Range |
1.5.3 Internal Standard |
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Sommario/riassunto |
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The only topical HPLC book to focus on optimization, this volume addresses the needs of HPLC users who wish to constantly improve their methods, in particular in terms of throughput, accuracy and cost-effectiveness. This handbook features contributions from such bestselling authors as John W. Dolan, Michael McBrien, Veronika R. Meyer, Uwe D. Neue, Lloyd R. Snyder, and Klaus K. Unger, as well as from scientists working for major companies, including Agilent, AstraZeneca, Merck, Schering, Tosoh Biosep, VWR, and Waters. It covers essential aspects of optimization in general, optimization in |
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3. |
Record Nr. |
UNINA9910969776103321 |
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Titolo |
Bundahišn : The Zoroastrian Book of Creation |
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Pubbl/distr/stampa |
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Oxford University Press, 2020 |
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New York, NY : , : Oxford University Press, , [2020] |
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ISBN |
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9780190879075 |
0190879076 |
9780190879051 |
019087905X |
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Descrizione fisica |
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Altri autori (Persone) |
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AgostiniDomenico |
ThropeSamuel |
ShakedShaul |
StroumsaGuy G |
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Disciplina |
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Soggetti |
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Pahlavi language |
Zoroastrianism |
Pahlavi |
Mazdaisme |
Llibres electrònics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Sommario/riassunto |
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The Bundahisn, meaning primal or foundational creation, is the central Zoroastrian account of creation, cosmology, and eschatology. Compiled sometime in the ninth century CE, it is one of the most important surviving testaments to Zoroastrian literature in the Middle Persian language and to pre-Islamic Iranian culture. Despite having been composed some two millennia after the Prophet Zoroaster's revelation, it is nonetheless a concise compendium of ancient Zoroastrian knowledge that draws on and reshapes earlier layers of the tradition. Well known in the field of Iranian Studies as an essential primary source for scholars of ancient Iran's history, religions, literatures, and languages, the Bundahisn is also a great work of literature in and of |
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itself, ranking alongside the creation myths of other ancient traditions. The book's thirty-six diverse chapters, which touch on astronomy, eschatology, zoology, medicine, and more, are composed in a variety of styles, registers, and genres, from spare lists and concise commentaries to philosophical discourses and poetic eschatological visions. This new translation, the first in English in nearly a century, highlights the aesthetic quality, literary style, and complexity and raises the profile of pre-Islamic Zoroastrian literature. |
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