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18350959 {"price-changing":null,"image":"https:\/\/image.vergleiche.ch\/small\/aHR0cHM6Ly9jNC1zdGF0aWMuZG9kYXguY29tL3YyLzE4MC0xODAtMTQ0NjE0MjM1XzlOWHZwWC1wbmc=!aHR0cHM6Ly9jNC1zdGF0aWMuZG9kYXguY29tL3YyLzE4MC0xODAtMTQ2MTE0NzEzX0RsRG00LXBuZw==","post_title":"Air Conditioning Systems - Introduction and Historical Background on Air Conditioning","deeplink":"https:\/\/www.awin1.com\/pclick.php?p=29774533635&a=401125&m=11816&pref1=9786203864045","labels":[],"brand_id":1,"post_content":"Chapter one in this book includes introduction to air conditioning systems. The different topics in this chapter are discussed from the viewpoints of general introduction, history of air conditioning systems and the development of air conditioners.In chapter two the main types of air conditioners are presented and discussed thoroughly from the considerations of mini - split and multi - split systems, central plant cooling, portable units, window unit and packaged terminal, packaged air conditioner, and vapor - compression refrigeration. Chapter three deliberates the health, environmental impacts and economics of air conditioners from the considerations of health effects, environmental impacts and economic effects. In chapter four other techniques and passive ventilation are deliberated from different viewpoints which include other techniques, passive ventilation, passive cooling, ceiling fan, thermal buffering and evaporative coolers. The book is suitable as a textbook for a first course on introduction and historical background on mechanical engineering. It can be used as a reference by engineers and scientists working in industry and academic institutions. Chapter one in this book includes introduction to air conditioning systems. The different topics in this chapter are discussed from the viewpoints of general introduction, history of air conditioning systems and the development of air conditioners. In chapter two the main types of air conditioners are presented and discussed thoroughly from the considerations of mini - split and multi - split systems, central plant cooling, portable units, window unit and packaged terminal, packaged air conditioner, and vapor - compression refrigeration. Chapter three deliberates the health, environmental impacts and economics of air conditioners from the considerations of health effects, environmental impacts and economic effects. In chapter four other techniques and passive ventilation are deliberated from different viewpoints which include other techniques, passive ventilation, passive cooling, ceiling fan, thermal buffering and evaporative coolers. The book is suitable as a textbook for a first course on introduction and historical background on mechanical engineering. It can be used as a reference by engineers and scientists working in industry and academic institutions.","merchants_number":1,"ean":9786203864045,"category_id":1,"size":null,"min_price":41.5499999999999971578290569595992565155029296875,"low_price_merchant_id":1087639,"ID":18350959,"merchants":["dodax"],"brand":"undefined","slug":"air-conditioning-systems-introduction-and-historical-background-on-air-conditioning","url":"\/produkt\/air-conditioning-systems-introduction-and-historical-background-on-air-conditioning\/","low_price_merchant_name":null}
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Open Tubular Column Gas Chromatography in Environmental Sciences
One: Introduction.- 1.1. Organic Contaminants in the Environment.- 1.2. Advances of Trace Organic Analysis.- 1.2.1. Separation Methods.- 1.2.2. Historical Development of WCOT Column Gas Chromatography.- 1.3. Nomenclature and Relationships in Gas Chromatography.- 1.4. Separation Number (Trennzahl).- 1.4.1. Required Column Parameters.- 1.4.2. Minimum Analysis Time.- 1.4.3. Column Length... zur Produkt-Seite
19689053 {"price-changing":0,"image":"https:\/\/image.vergleiche.ch\/small\/aHR0cHM6Ly9vczEubWVpbmVjbG91ZC5pby9iMTAxNTgvbWVkaWEvaW1hZ2UvOTgvMDUvMzYvNDI5MTI4MjIwMDAwMUFfNjAweDYwMC5qcGc=!aHR0cHM6Ly9vczEubWVpbmVjbG91ZC5pby9iMTAxNTgvbWVkaWEvaW1hZ2UvOTgvMDUvMzYvNDI5MTI4MjIwMDAwMUFfNjAweDYwMC5qcGc=","post_title":"Open Tubular Column Gas Chromatography in Environmental Sciences","deeplink":"https:\/\/cct.connects.ch\/tc.php?t=116298C1969900829T&subid=9781468446906&deepurl=https%3A%2F%2Feuniverse.ch%2Fbuecher%2Fmathematik-naturwissenschaft-technik%2Fchemie%2F371325%2Fopen-tubular-column-gas-chromatography-in-environmental-sciences%3FsPartner%3Dtoppreise","labels":[],"brand_id":436586,"post_content":"One: Introduction.- 1.1. Organic Contaminants in the Environment.- 1.2. Advances of Trace Organic Analysis.- 1.2.1. Separation Methods.- 1.2.2. Historical Development of WCOT Column Gas Chromatography.- 1.3. Nomenclature and Relationships in Gas Chromatography.- 1.4. Separation Number (Trennzahl).- 1.4.1. Required Column Parameters.- 1.4.2. Minimum Analysis Time.- 1.4.3. Column Length.- 1.5. Thermodynamic Concept of Polarity and Selectivity.- 1.5.1. Polarity.- 1.5.2. Selectivity.- 1.6. Stationary Phases.- References.- Two: Glass WCOT Columns.- 2.1. Glass Surfaces as Support Materials.- 2.1.1. Fused Silica.- 2.1.2. Soft Glasses.- 2.1.3. Borosilicate Glass.- 2.2. Glass Surface Properties.- 2.3. Dehydration and Rehydration of Glass Surfaces.- 2.4. Capillary Tubing Fabrication.- 2.5. WCOT Column Surface Modifications.- 2.5.1. General Considerations.- 2.5.2. Surface-Roughening Techniques.- 2.5.3. HCl-Induced Crystallization in Gaseous Phase.- 2.5.4. Pyrex Glass Surface Modification.- 2.5.5. Deposition of Barium Carbonate.- 2.5.6. Other Roughening Methods.- 2.6. Glass Surface Deactivation and Chemical Modification.- 2.7. Coating the WCOT Column.- 2.7.1. Dynamic Methods.- 2.7.2. Static Techniques.- 2.8. WCOT Column Conditioning.- 2.9. Glass WCOT Column Maintenance.- References.- Three: Inlet Systems.- 3.1. General Considerations.- 3.2. Sample Introduction Techniques.- 3.2.1. Cold Syringe Needle Injection.- 3.2.2. Filled Syringe Needle Injection.- 3.2.3. Air Plug Method.- 3.2.4. Hot Syringe Needle Injection.- 3.2.5. Solvent Flush Technique.- 3.3. Split Sampling Technique.- 3.4. Splitless Sampling Technique.- 3.5. On-Column Injection Techniques.- 3.6. Direct Injection.- 3.7. Column-Switching Techniques.- 3.7.1. Splitless Injection.- 3.7.2. The Back-Flushing Method.- 3.7.3. Preseparation with Packed-Column and Intermediate-Peak Trapping.- 3.7.4. Preseparation with Packed-Column, Dual Injection, and Intermediate-Peak Trapping.- 3.8. Flow Programming in WCOT Column Gas Chromatography.- References.- Four: Detectors.- 4.1. Flame Ionization Detector.- 4.1.1. Optimization of the FID.- 4.1.2. Detector Maintenance.- 4.2. Electron Capture Detector.- 4.2.1. Principles and Operation of the ECD.- 4.2.2. Contamination of the ECD.- 4.2.3. Response Factors.- 4.2.4. Troubleshooting Electron Capture Detectors.- 4.2.5. Cleaning Electron Capture Detectors.- 4.3. Thermionic (Alkali Flame Ionization) Detector.- 4.3.1. Mechanism of Selectivity of a TED Detector.- 4.3.2. Phosphorus Mode.- 4.3.3. Selectivity and Response of TED.- 4.4. Photoionization Detector.- 4.5. The Mass Spectrometer as Detector.- 4.5.1. The Mass Spectrometer.- 4.5.2. Requirements for an Optimal GC\/MS Combination.- 4.5.3. Requirements for the Mass Spectrometer.- 4.5.4. Vacuum Technology.- 4.5.5. Ion Source Optics.- 4.5.6. Scanning Time.- 4.5.7. Repetitive Scan.- 4.5.8. Selected Ion Monitoring.- 4.5.9. Computer Compatibility.- 4.6. Operational Modes of an Ion Source.- 4.6.1. Electron Impact Ionization.- 4.6.2. Chemical Ionization.- 4.6.3. Field Ionization.- 4.6.4. Field Desorption.- 4.6.5. Atmospheric Pressure Ionization.- 4.6.6. Tandem Mass Spectrometry (MS\/MS) and GC\/MS\/MS.- 4.7. GC\/MS Interface.- 4.7.1. Open Split.- 4.7.2. Direct Coupling.- 4.8. Parameters Affecting Performance of GC\/MS System.- References.- Five: Sample Preparation.- 5.1. General Considerations.- 5.2. Planning the Analytical Study.- 5.2.1. Sampling.- 5.2.2. Extraction Procedures.- 5.3. Cleanup Procedures.- 5.3.1. Solvents and Reagent Purity.- 5.3.2. Quality of Adsorbents.- 5.3.3. Group Selective Adsorbents.- 5.3.4. Open-Pore Polyurethane.- 5.4. Liquid-Liquid Extraction.- 5.5. Liquid Chromatography.- 5.6. Headspace Analysis.- 5.6.1. Closed-Loop Stripping Techniques.- 5.6.2. Preconcentration of Contaminants Using Automatic Purge and Trap Devices.- 5.7. Thermal Desorption Methods.- 5.8. Steam Distillation.- 5.9. Partitioning Methods.- 5.10. Miscellaneous Methods.- 5.11. Air Sampling.- 5.12. Source Sampling Procedures.-","merchants_number":1,"ean":9781468446906,"category_id":1,"size":null,"min_price":111,"low_price_merchant_id":70255345,"ID":19689053,"merchants":["euniverse"],"brand":"Springer Berlin,Springer US","slug":"open-tubular-column-gas-chromatography-in-environmental-sciences","url":"\/produkt\/open-tubular-column-gas-chromatography-in-environmental-sciences\/","low_price_merchant_name":"eUniverse"}
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Open Tubular Columns in Gas Chromatography
First Part. Introduction.- 1.1 Origins.- 1.2 Nomenclature.- 1.3 Terms and Definitions.- 1.31 Characterization of a Peak.- 1.32 The Partition Process.- 1.33 Peak Separation.- 1.34 Column Efficiency.- 1.35 Flow Rate and Gas Velocity.- Second Part. Theory and Practice.- 2.1 The Basic Golay Equation.- 2.2 Practical Conclusions from the Golay Equation.- 2.21 Column Efficiency.- 2.22 Carrie... zur Produkt-Seite
19688444 {"price-changing":0,"image":"https:\/\/image.vergleiche.ch\/small\/aHR0cHM6Ly9vczEubWVpbmVjbG91ZC5pby9iMTAxNTgvbWVkaWEvaW1hZ2UvNDgvNWEvMTYvNDI4OTM2MTAwMDAwMUFfNjAweDYwMC5qcGc=!aHR0cHM6Ly9vczEubWVpbmVjbG91ZC5pby9iMTAxNTgvbWVkaWEvaW1hZ2UvNDgvNWEvMTYvNDI4OTM2MTAwMDAwMUFfNjAweDYwMC5qcGc=","post_title":"Open Tubular Columns in Gas Chromatography","deeplink":"https:\/\/cct.connects.ch\/tc.php?t=116298C1969900829T&subid=9781468406900&deepurl=https%3A%2F%2Feuniverse.ch%2Fbuecher%2Fmathematik-naturwissenschaft-technik%2Fchemie%2F370661%2Fopen-tubular-columns-in-gas-chromatography%3FsPartner%3Dtoppreise","labels":[],"brand_id":436586,"post_content":"First Part. Introduction.- 1.1 Origins.- 1.2 Nomenclature.- 1.3 Terms and Definitions.- 1.31 Characterization of a Peak.- 1.32 The Partition Process.- 1.33 Peak Separation.- 1.34 Column Efficiency.- 1.35 Flow Rate and Gas Velocity.- Second Part. Theory and Practice.- 2.1 The Basic Golay Equation.- 2.2 Practical Conclusions from the Golay Equation.- 2.21 Column Efficiency.- 2.22 Carrier Gas Flow.- 2.23 Selection of Carrier Gas.- 2.24 Liquid-Film Thickness.- 2.3 Comparison with Packed Columns.- 2.31 Influence of the ? Values on Column Characteristics.- 2.32 Changes in the Necessary Column Efficiency.- 2.321 Number of Theoretical Plates Required at Various ? and k Values.- 2.322 Comparison of the Two Column Types.- 2.323 Examples.- 2.323.1 Analysis of p\/m-Xylenes.- 2.323.2 Analysis of Fatty Acid Methyl Esters.- 2.33 Influence of Column Permeability.- 2.331 Specific Permeability.- 2.332 Correlation Between Specific Permeability and Pressure Drop Through the Column.- 2.333 Comparison of Practical Columns.- 2.34 The Performance Index.- 2.35 Modified Expressions Related to the Plate Number Concept.- 2.351 Number of Effective Plates.- 2.352 Height Equivalent to One Effective Plate.- 2.353 Modified Expression for the Number of Theoretical Plates.- 2.354 Resolution Factor.- 2.36 Practical Applications.- 2.4 The Influence of Temperature.- 2.5 Sample Capacity.- 2.6 Open Tubular Columns of Various Diameters.- Third Part. Preparation of Open Tubular Columns.- 3.1 Tubing.- 3.11 Plastic Tubing.- 3.12 Glass Tubing.- 3.13 Metal Tubing.- 3.2 Coating of the Column Tubing.- 3.21 Cleaning of the Column Tubing.- 3.22 Dynamic Coating Method.- 3.221 Volume of Coating Solution Larger Than the Volume of Tubing.- 3.222 Plug Method.- 3.23 Static Coating Method.- 3.24 Elimination of the Secondary Adsorption Effects of Column Tubing.- 3.25 Column Conditioning and Storage.- 3.26 Recoating of Open Tubular Columns.- 3.3 Testing of Open Tubular Columns.- 3.31 The Use of the \"Polarity Mixture\" for Testing.- 3.32 Determination of the \"Air Peak\" Time.- 3.4 Increase of the Inside Surface Area of the Column Tubing.- 3.41 Chemical Treatment of the Inside Wall of the Tubing.- 3.42 Deposition of a Porous Support Layer on the Inside Wall of the Tubing.- 3.5 Adsorption-Type Open Tubular Columns.- 3.51 Plating Methods.- 3.52 Adsorption Columns with Chemically Modified Inside Wall.- 3.53 Open Tubular Columns Coated with an Adsorptive Layer.- 3.54 Modification of the Van Deemter-Golay Equation for Open Tubular Adsorption Columns.- Fourth Part. The Gas Chromatographic System.- 4.1 Sample Introduction.- 4.11 Sample Introduction Systems.- 4.12 Split Systems.- 4.121 Dynamic Splitting.- 4.122 Static Splitting.- 4.2 The Pneumatic System.- 4.21 Carrier Gas Regulation.- 4.22 Connecting Tubes.- 4.3 Column Heating.- 4.31 Isothermal Operation.- 4.32 Programmed-Temperature Operation.- 4.33 Applications of Temperature-Programmed Open Tubular Columns.- 4.34 Compensation of Liquid-Phase Bleeding During Temperature Programming.- 4.4 Detection and Recording.- 4.41 Commonly Used Detectors.- 4.42 Auxiliary Detectors.- 4.43 Recording Systems.- Fifth Part. Bibliography.- Sixth Part. Supplements.- 6.1 Calculation of the \"Air Peak\" Time.- 6.11 The Method of Peterson and Hirsch.- 6.12 The Method of Gold.- 6.2 Instrumentation.","merchants_number":1,"ean":9781468406900,"category_id":1,"size":null,"min_price":89.900000000000005684341886080801486968994140625,"low_price_merchant_id":70255345,"ID":19688444,"merchants":["euniverse"],"brand":"Springer Berlin,Springer US","slug":"open-tubular-columns-in-gas-chromatography-1","url":"\/produkt\/open-tubular-columns-in-gas-chromatography-1\/","low_price_merchant_name":"eUniverse"}
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Sequencing and Sorting in Just-In-Time Production
Diploma Thesis from the year 2004 in the subject Mathematics - Applied Mathematics, grade: 1.3, Brandenburg Technical University Cottbus (Institut für Mathematik), language: English, abstract: Since Karl Benz built the first motor driven vehicle in 1886 a new industry was born which is still one of the most important and influential sectors of economy. His 0.9 horse-power engine only ... zur Produkt-Seite
10211638 {"price-changing":0,"image":"https:\/\/image.vergleiche.ch\/small\/aHR0cHM6Ly9hc3NldHMudGhhbGlhLm1lZGlhL2ltZy9hcnRpa2VsLzBlNjgxMzdlMmJiODcxZTU5YzE0NTQ1OTRmYjY1YzRmYjY0MDllODktMDAtMDAuanBlZw==!aHR0cHM6Ly9hc3NldHMudGhhbGlhLm1lZGlhL2ltZy9hcnRpa2VsLzBlNjgxMzdlMmJiODcxZTU5YzE0NTQ1OTRmYjY1YzRmYjY0MDllODktMDAtMDAuanBlZw==","post_title":"Sequencing and Sorting in Just-In-Time Production","deeplink":"https:\/\/www.awin1.com\/pclick.php?p=25179140067&a=401125&m=13971&pref1=9783638363310","labels":[],"brand_id":327969,"post_content":"Diploma Thesis from the year 2004 in the subject Mathematics - Applied Mathematics, grade: 1.3, Brandenburg Technical University Cottbus (Institut f\u00fcr Mathematik), language: English, abstract: Since Karl Benz built the first motor driven vehicle in 1886 a new industry was born which is still one of the most important and influential sectors of economy. His 0.9 horse-power engine only reached 15 kilometers per hour but gave the starting shot for more and more inventions and a rapidly growing automobile industry. First cars where used for racing only but during the first period of the twentieth century it established its position as a new and individual means of transport. In 1936 the first Volkswagen called Beetle, a vehicle for the masses, was developed by Ferdinand Porsche and has been produced for 67 years. The last Beetle was built in the summer of 2003 in Mexico. Worldwide 100.000 new cars are being produced every day and in 2010 there will be over 1 billion private cars all over the world. This development requires perfectly organized and well optimized production processes and still calls for new inventions and improvements. The production process in automobile manufacturing splits into three major stages. The moulding and welding of the car body in the body shop, the painting of the welded car bodies in the paint shop and the customization of the painted car bodies in the assembly shop. The work presented here deals with the last two stages. The production plant contains a system of production lines which sometimes split into parallel lines and reunite to a non-parallel line. Each of these lines can require some set of restrictions on the cars sequenced on that line. In the paint shop the cars are being painted on a line by a robot which through jets sprays the color onto the surface of the car body. Whenever the next car on the line has the same color the jets can be re-used. Otherwise they have to be cleaned which requires time and causes pollution. Therefore, minimizing the color changes that occur in the paint shop can save non negligible costs. In the assembly shop separate teams install different options into the cars such as sun-roof, air-conditioning, central locking system etc. Therefore the order of the cars on the line has to fulfill some restrictions considering that each option requires a fixed time for installation and resources which have to be available at the time of installation.","merchants_number":1,"ean":9783638363310,"category_id":1,"size":null,"min_price":39.89999999999999857891452847979962825775146484375,"low_price_merchant_id":70254503,"ID":10211638,"merchants":["orell-fuessli"],"brand":"GRIN","slug":"sequencing-and-sorting-in-just-in-time-production","url":"\/produkt\/sequencing-and-sorting-in-just-in-time-production\/","low_price_merchant_name":"Orell F\u00fcssli"}
