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  • 1
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Capillary electrophoresis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (288 pages)
    Edition: 1st ed.
    ISBN: 9780470434918
    Language: English
    Note: Intro -- NANOCHROMATOGRAPHY AND NANOCAPILLARY ELECTROPHORESIS -- CONTENTS -- PREFACE -- ACKNOWLEDGMENTS -- 1 Introduction -- 1.1. Nanoanalyses -- 1.2. Definition of Nanochromatography and Nanocapillary Electrophoresis -- 1.3. Nanochromatography and Nanocapillary Electrophoresis -- 1.4. Fabrication of Microdevices -- 1.5. Developments in Nanoanalyses -- 1.6. Data Integration -- 1.7. Protocol of Nanoanalyses -- 1.8. Scope of the Book -- 1.9. Conclusion -- References -- 2 Fabrication of Microchips -- 2.1. Introduction -- 2.2. Substrates -- 2.3. Techniques of Fabrication -- 2.3.1. Glass Chips -- 2.3.2. Quartz Chips -- 2.3.3. Silica Chips -- 2.3.4. Polymer Chips -- 2.3.5. Plastic Chips -- 2.3.6. Chips and the Polymerase Chain Reaction -- 2.4. Surface Modification -- 2.4.1. Modification by Polymers -- 2.4.2. Modification by Silica Gel -- 2.4.3. Modification by Monolithics -- 2.4.4. Modification by Sulfonation -- 2.5. Designs of Chips -- 2.6. Bindings in Chips -- 2.7. Conclusion -- References -- 3 Instrumentation of Nanochromatography and Nanocapillary Electrophoresis -- 3.1. Introduction -- 3.2. Nanoliquid Chromatography (NLC) -- 3.2.1. Mobile Phase Reservoirs -- 3.2.2. Mobile Phases and Flow Calibration -- 3.2.3. Mobile Phase Tubings -- 3.2.4. Solvent Delivery Pump -- 3.2.5. Sample Injector -- 3.2.6. Separation Chips -- 3.2.7. Detectors -- 3.2.8. Recorder -- 3.2.9. Sample Preparation Units -- 3.3. Nanocapillary Electrophoresis -- 3.3.1. Separation Chip -- 3.3.2. Background Electrolyte and Its Reservoirs -- 3.3.3. Sample Injection Port -- 3.3.4. Detectors -- 3.3.5. Recorder -- 3.3.6. Sample Preparation Units -- 3.4. Conclusion -- References -- 4 Detection in Nanochromatography and Nanocapillary Electrophoresis -- 4.1. Introduction -- 4.2. Mass Spectrometer Detectors -- 4.3. Fluorescence Detectors -- 4.4. Electrochemical Detectors. , 4.5. Element Specific Detectors -- 4.6. Miscellaneous Detectors -- 4.7. Conclusion -- References -- 5 Sample Preparation in Nanochromatography and Nanocapillary Electrophoresis -- 5.1. Introduction -- 5.2. Sample Preparation -- 5.3. Sampling -- 5.3.1. Biological Samples -- 5.3.1.1. Blood -- 5.3.1.2. Urine -- 5.3.1.3. Tissues -- 5.3.1.4. Plants -- 5.3.1.5. Food Stuffs -- 5.3.2. Environmental Samples -- 5.3.2.1. Air -- 5.3.2.2. Water -- 5.3.2.3. Sediment and Soils -- 5.4. Preservation -- 5.5. Filtration -- 5.6. Digestion/Homogenization -- 5.7. Extractions -- 5.8. Clean Up -- 5.9. Preconcentration -- 5.10. Off-Line Nanosample Preparation Methods -- 5.10.1. Nano Solid Phase Extractions -- 5.10.2. Nano Membrane Extractions -- 5.10.3. Nano Miscellaneous Extractions -- 5.11. Online Nanosample Preparation Methods -- 5.12. Conclusion -- References -- 6 Nano-High Performance Liquid Chromatography -- 6.1. Introduction -- 6.2. Nano-HPLC -- 6.3. Applications -- 6.3.1. Nano-HPLC of Biological Matrices -- 6.3.1.1. Proteomics -- 6.3.1.2. Drugs Development and Design -- 6.3.1.3. Environmental Analysis -- 6.4. Optimization of Separations in Nano-HPLC -- 6.5. Troubleshooting in Nano-HPLC -- 6.6. Conclusion -- References -- 7 Nanocapillary Electrochromatography and Nanomicellar Electrokinetic Chromatography -- 7.1. Introduction -- 7.2. Nanocapillary Electrochromatography -- 7.2.1. Biological Samples -- 7.2.2. Environmental Samples -- 7.2.3. Mechanism of Separation -- 7.3. Nanomicellar Electrokinetic Chromatography -- 7.3.1. Biological Samples -- 7.3.2. Environmental Samples -- 7.3.3. Mechanisms of Separation -- 7.4. Conclusion -- References -- 8 Nanocapillary Electrophoresis -- 8.1. Introduction -- 8.2. Optimization -- 8.3. Applications -- 8.3.1. Proteomics -- 8.3.2. Genomics -- 8.3.3. Amino Acids -- 8.3.4. Drug Development and Design -- 8.3.5. Enzymes and Hormones. , 8.3.6. Biological Fluids -- 8.3.7. Foods and Beverages -- 8.3.8. Viruses and Bacteria -- 8.3.9. Explosives -- 8.3.10. Environmental Analyses -- 8.3.11. Miscellaneous Applications -- 8.4. Mechanism of Separation -- 8.5. Conclusion -- References -- 9 Chiral Separations by Nanoliquid Chromatography and Nanocapillary Electrophoresis -- 9.1. Introduction -- 9.2. Nanoliquid Chromatography -- 9.3. Nanocapillary Electrophoresis -- 9.4. Mechanisms of Chiral Separation -- 9.5. Conclusion -- References -- 10 Perspectives on Nanoanalyses -- 10.1. Introduction -- 10.2. Future of Microfluidic Devices -- 10.3. Future Challenges -- 10.4. Conclusion -- References -- Subject Index.
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  • 2
    Keywords: Physical geography. ; Geology. ; Atmospheric science. ; Geochemistry.
    Description / Table of Contents: Section 1. Hydrology, Hydrogeology, Hydrogeochemistry and Water Resources -- Section 2. Biogeochemistry, Geobiology and Geoecology -- Section 3. Atmospheric Sciences, Meteorology, Climatology, Oceanography.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource(XXX, 293 p. 181 illus., 171 illus. in color.)
    Edition: 1st ed. 2023.
    ISBN: 9783031431692
    Series Statement: Advances in Science, Technology & Innovation, IEREK Interdisciplinary Series for Sustainable Development
    Language: English
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  • 3
    Keywords: Earth sciences. ; Physical geography. ; Environment. ; Environmental monitoring.
    Description / Table of Contents: Section 1. Environmental Earth Sciences -- Section 2. Geomorphology, Landslides, Soil Science, Paleoclimate, Geoarchaeology -- Section 3. Caves and Karst, a special session on the occasion of the International Year of Caves and Karst (2021).
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource(XXXI, 258 p. 150 illus., 137 illus. in color.)
    Edition: 1st ed. 2023.
    ISBN: 9783031429170
    Series Statement: Advances in Science, Technology & Innovation, IEREK Interdisciplinary Series for Sustainable Development
    Language: English
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Biomedical Chromatography 6 (1992), S. 196-197 
    ISSN: 0269-3879
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The separation of tetracycline and amino glycopeptide antibiotics was achieved on silica gel thin layers. Tetracycline antibiotics were resolved on a Co+2 (1.0%) impregnated silica gel layer using ethanol:acetic acid: water (10:6:6, v/v/v) as the mobile phase. Amino glycopeptide antibiotics were separated on an untreated silica gel layer using the mobile phase n-butanol: formic acid: water (6:5:7, v/v/v). The spots of these antibiotics were located by exposing the chromatoplate to iodine vapours.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 23 (1987), S. 207-208 
    ISSN: 1612-1112
    Keywords: Thin-layer chromatography ; Halide ion impregnated silica gel ; Amino acids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract TLC of a fifteen component mixture of amino acids has been carried out in two ways; firstly, the amino acids were treated with halides below their isoelectric points and chromatographed on plain silica plates, and secondly the amino acids in their cationic forms were chromatographed on silica plates impregnated with halides, keeping the same solvent system. The resolution is considered to be affected by hydrophobic interactions between silica gel and amino acid molecule and by the polarity and the flow of the mobile phase. The method provides resolution of 10–11 amino acids from the fifteen component mixture.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 329 (1988), S. 793-793 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Publication Date: 2016-03-12
    Description: Bio-oil produced from conventional flash pyrolysis has poor quality and requires expensive upgrading before it can be used as a transportation fuel. In this work, a high quality bio-oil has been produced using a novel approach where flash pyrolysis, catalysis and fractionation of pyrolysis vapors using two stage condensation are combined in a single process unit. A bench scale unit of 1 kg/h feedstock capacity is used for catalytic pyrolysis in an entrained down-flow reactor system equipped with two-staged condensation of the pyrolysis vapor. Zeolite-based catalysts are investigated to study the effect of varying acidities of faujasite Y zeolites, zeolite structures (ZSM5), different catalyst to biomass ratios and different catalytic pyrolysis temperatures. Low catalyst/biomass ratios did not show any significant improvements in the bio-oil quality, while high catalyst/biomass ratios showed an effective deoxygenation of the bio-oil. The application of zeolites decreased the organic liquid yield due to the increased production of non-condensables, primarily hydrocarbons. The catalytically produced bio-oil was less viscous and zeolites were effective at cracking heavy molecular weight compounds in the bio-oil. Acidic zeolites, H-Y and H-ZSM5, increased the desirable chemical compounds in the bio-oil such as phenols, furans and hydrocarbon, and reduced the undesired compounds such as acids. On the other hand reducing the acidity of zeolites reduced some of the undesired compounds in the bio-oil such as ketones and aldehydes. The performance of H-Y was superior to that of the rest of zeolites studied: bio-oil of high chemical and calorific value was produced with a high organic liquid yield and low oxygen content. H-ZSM5 was a close competitor to H-Y in performance but with a lower yield of bio-oil. Online fractionation of catalytic pyrolysis vapors was employed by controlling the condenser temperature and proved to be a successful process parameter to tailor the desired bio-oil properties. A high calorific value bio-oil having up to 90% organics was produced using two staged condensation of catalytic pyrolysis vapor. Zeolite-based acidic catalysts can be used for selective deoxygenation, and the catalytic bio-oil quality can be further improved with staged vapor condensation.
    Electronic ISSN: 1996-1073
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 8
    Publication Date: 2017-09-30
    Description: IJERPH, Vol. 14, Pages 1152: Antibiotic Self-Medication among Non-Medical University Students in Punjab, Pakistan: A Cross-Sectional Survey International Journal of Environmental Research and Public Health doi: 10.3390/ijerph14101152 Authors: Ali Gillani Wenjing Ji Waqar Hussain Ali Imran Jie Chang Caijun Yang Yu Fang Background: Antibiotic resistance is a global threat. Scarce knowledge about safe and appropriate antibiotic use is coupled with frequent self-administration, e.g., in China. This repeated self-medication poses potential risk in terms of antibiotic resistance. Low-resource countries are facing an elevated burden of antibiotic self-medication as compared to developed ones. Thus, this study focused on evaluating the pervasiveness of antibiotic self-medication in 3 universities of Southern Punjab, Pakistan. Methods: We conducted a descriptive cross-sectional survey in three government sector universities of Southern Punjab, Pakistan. The study was carried out with self-administered paper-based questionnaires. Data was analyzed using SPSS version 18.0 (IBM, Chicago, IL, USA). Results: Seven hundred twenty-seven students out of 750 (response rate 97%) with a mean age ± SD of 23.0 ± 3.4 years agreed to participate in the study. The proportion of females was slightly greater (52%) compared with males (48%), and almost one-third of the respondents (36%) were in their 2nd year of university. Out of the total, 58.3% practiced self-medication in the preceding six months, and 326 (45%) confirmed the use of antibiotics. Metronidazole was the most frequently self-medicated antibiotic (48%). Out of the total, 72% demonstrated awareness regarding the side effects of antibiotics. Diarrhea was the well-known adverse effect (38%). Forty-three percent affirmed having antibiotic resistance knowledge, and 30% knew that the irregular use of antibiotics would lead to increased antibiotic resistance. Conclusion: Despite having ample awareness of the adverse antibiotic reactions, self-medication among the university students was high and antibiotic resistance was a fairly unknown term.
    Print ISSN: 1661-7827
    Electronic ISSN: 1660-4601
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by MDPI Publishing
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  • 9
    Publication Date: 2018-06-21
    Description: Sustainability, Vol. 10, Pages 2101: Impact of Climate Smart Agriculture (CSA) Practices on Cotton Production and Livelihood of Farmers in Punjab, Pakistan Sustainability doi: 10.3390/su10062101 Authors: Muhammad Ali Imran Asghar Ali Muhammad Ashfaq Sarfraz Hassan Richard Culas Chunbo Ma Cotton is the second largest crop of Pakistan in terms of area after wheat and is being suffered by multiple shocks over the time due to conventional agricultural management practices, climate change, and market failures. Climate Smart Agriculture (CSA) was introduced by the Food and Agricultural Organization (FAO) in 2010, as an innovative cleaner production alternative to conventional farming that aimed at increasing the efficiency of natural resources, resilience, and productivity of agricultural production system, while reducing greenhouse gas emissions. The adverse effects of climate change on cotton production at the farm and regional level can be minimized by using CSA practices and technologies. The present study investigated the financial performance and explored the impact of CSA through sustainable water use management on cotton production in Lower Bari Doab Canal (LBDC) irrigation system of Punjab, Pakistan by using Cobb-Douglas production function. The adopters of CSA in cotton cultivation were identified by conducting six focus group discussions. Data were collected through well-structured questionnaire from 133 adopters of CSA and 65 conventional cotton growers for the cropping season 2016–2017. It was found that water-smart (raising crops on bed, laser land levelling, conjunctive use of water and drainage management), energy-smart (minimum tillage), carbon-smart (less use of chemicals) and knowledge-smart (crop rotation and improved varieties i.e., tolerant to drought, flood and heat/cold stresses) practices and technologies of CSA were adopted by the cotton farmers in the study area. Most of the farmers were of the view that they are adopting CSA practices and technologies due to the limited supply of canal water, climate change, drought-prone, massive groundwater extraction, rapidly declining groundwater table and increasing soil salinity over the time. Results revealed that uniform germination, higher yield and financial returns, the concentration of inputs and increase in resource use efficiency are the main advantages of CSA. The econometric analysis showed that implementation of CSA practices and technologies as judicious use of water and fertilizer, groundwater quality, access to extension services, and appropriate method and time of picking have a significant impact on the gross value of cotton product (GVP). The findings of the study would be helpful for policy makers to formulate policies that can minimize farmer’s financial burden to adopt CSA technologies and implement for scaling out in Punjab and beyond.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 10
    Publication Date: 2018-08-10
    Description: Symmetry, Vol. 10, Pages 332: On the Distinguishing Number of Functigraphs Symmetry doi: 10.3390/sym10080332 Authors: Muhammad Fazil Muhammad Murtaza Zafar Ullah Usman Ali Imran Javaid Let G 1 and G 2 be disjoint copies of a graph G and g : V ( G 1 ) → V ( G 2 ) be a function. A functigraph F G consists of the vertex set V ( G 1 ) ∪ V ( G 2 ) and the edge set E ( G 1 ) ∪ E ( G 2 ) ∪ { u v : g ( u ) = v } . In this paper, we extend the study of distinguishing numbers of a graph to its functigraph. We discuss the behavior of distinguishing number in passing from G to F G and find its sharp lower and upper bounds. We also discuss the distinguishing number of functigraphs of complete graphs and join graphs.
    Electronic ISSN: 2073-8994
    Topics: Mathematics , Physics
    Published by MDPI Publishing
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