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Utilization of Crude Glycerol as a Substrate for the Production of Rhamnolipid by Pseudomonas aeruginosa
No full textBiosurfactants are produced by bacteria or yeast utilizing different substrates as sugars, glycerol, or oils. They have important applications in the detergent, oil, and pharmaceutical industries. Glycerol is the product of biodiesel industry and the existing glycerol market cannot accommodate the excess amounts generated; consequently, new markets for refined glycerol need to be developed. The aim of present work is to optimize the production of microbial rhamnolipid using waste glycerol. We have developed a process for the production of rhamnolipid biosurfactants using glycerol as the sole carbon source by a local Pseudomonas aeruginosa isolate that was obtained from an extensive screening program. A factorial design was applied with the goal of optimizing the rhamnolipid production. The highest production yield was obtained after 2 days when cells were grown in minimal salt media at pH 6, containing 1% (v/v) glycerol and 2% (w/v) sodium nitrate as nitrogen source, at 37°C and at 180 rpm, and reached 2.164 g/L after 54 hours (0.04 g/L h). Analysis of the produced rhamnolipids by TLC, HPLC, and FTIR confirmed the nature of the biosurfactant as monorhamnolipid. Glycerol can serve as a source for the production of rhamnolipid from microbial isolates providing a cheap and reliable substrate
Essentials of medical biochemistry
No full textIncludes indexes.dental bookfair2016Preceded by: Marks' essential medical biochemistry / Michael Lieberman, Allan Marks, Colleen Smith. c2007.Based on: Marks' basic medical biochemistry / Michael Lieberman, Allan Marks, Alisa Peet. 4th ed. c2013.ix, 622 pages :Marks’ Essentials of Medical Biochemistry takes a patient-oriented approach that links biochemistry to physiology and pathophysiology, allowing students to apply fundamental concepts to the practice of medicine. Based on the established text, Marks’ Basic Medical Biochemistry, Marks’ Essentials is streamlined to focus only on the most essential biochemical concepts, while maintaining intuitively organized chapters centered on hypothetical patient vignettes and helpful icons for smooth navigation.
• Full-color illustrations of chemical structures and biochemical pathways elucidate core concepts and enhance understanding of the text
• Hypothetical patient vignettes ensure clinical relevance and help connect biochemistry to human health and disease
• Helpful icons guide you through each chapter and identify key concepts such as signs and symptoms, clinical pearls, treatment options and outcomes, and more
• Chapter Outlines and Key Points allow readers to preview and review chapter content
• End-of-Chapter Review Questions and Summary Disease Tables highlight the take-home messages and reinforce knowledg
Practical guide to machine vision software : an introduction with LabVIEW / Kye-Si Kwon, Steven Ready.
No full textIncludes index.computer bookfair2016xii, 278 pages
7th International Conference on NANO-TECHNOLOGY IN CONSTRUCTION
No full textThe production of Self-compacting concrete (SCC) is a relatively new technology. Nowadays,
the production of SCC is becoming more popular in all over the world due to its superior
properties. Self-compacting concrete is a fluid mixture suitable for placing in structures with
congested reinforcement without vibration. Self-compacting concrete development must
ensure a good balance between deformability and stability. Also, compactibility is affected by
the characteristics of materials and the mix proportions, it becomes necessary to evolve a
procedure for mix design of SCC. The paper presents an experimental procedure for the
design of self-compacting concrete mixes with different water/binder ratio and the effect of
mineral admixtures –fly ash or silica fume- on fresh and hardened properties of SCC. The test
results for acceptance characteristics of self-compacting concrete such as slump flow, J-ring
and V-funnel are presented. Further, compressive strength at 7 and 28 days was also
determined and results are analyzed and discussed
Comparative Study of Multivariate and Univariate Determination of Zolmitriptan in the Presence of its Degradation products
No full textThis work describes comparative study of multivariate chemometric and univariate spectrophotometric determination of zolmitriptan (ZLM ) in the presence of its alkaline and oxidative degradation products. Both methods show high sensitivity and the same linearity range (1-6 μg/mL) while the chemometric method has the advantage of higher accuracy, higher specificity and better regression parameters. The study describes complete stability study on zolmitriptan and structure elucidation of the formed degradation products. The spectrophotometric method based on successive spectrophotometric resolution pattern namely; successive ratio subtraction (SRS) method using both degradation products as divisors successively followed by direct spectrophometric measurement of zolmitriptan at 222 nm while the chemometric method used PLS and PCR models. The proposed methods were successfully applied for the determination of zolmitriptan in pure powder as well as in its pharmaceutical formulation. Statistical comparison showed no significant difference between the developed methods and the reference method
Elites : a general model / Murray Milner, Jr.
No full textIncludes bibliographical references (pages 149-198) and index.ix, 203 p. ;At a time when significant social status, economic resources, and political opportunities seem to become ever more unequally distributed and only available to a few, this book represents the first systematic effort in recent years to develop a sociological model of elites and non-elites. In outlining a new typology of economic, political, and cultural elites, as well as drawing attention to the important role of non-elites, this accessibly written book provides novel insights into the structure of historical and contemporary societies. Milner identifies the sources and structures of economic, political, and cultural power, and investigates patterns of cooperation and conflict between and within elite groups. Analyzing politicians and propagandists, landowners and capitalists, national heroes and celebrities, ordinary folks and outcasts, the book applies its model to three distinctly different societies - ancient India, Classical Athens, and the contemporary United States - highlighting important structural commonalities across these otherwise very dissimilar societies. -- from back cover
Environmental and natural resource economics.
No full textIncludes index.economic&political bookfair2016632 pages :Environmental and Natural Resource Economics is the best-selling text for this course, offering a policy-oriented approach and introducing economic...
theory in the context of debates and empirical work from the field. Students leave the course with a global perspective of both environmental and natural resource economics. Gain flexibility in your course outlines: The text is organized, so that you can fit individual course outlines. Use relevant material: Students identify with up-to-date information, which gives them a global perspective on key issues. Engage students with self-test exercises, debates and examples: Students are able to prepare for their field and learn from an active learning path, which allows them to grasp concepts before moving though the text
Cost accounting : a managerial emphasis / Charles T. Horngren, Stanford University, Srikant M. Datar, Harvard University, Madhav V. Rajan, Stanford University.
No full textIncludes bibliographical references and index.pages c
Effect of two remeniralizing agents on the microhardness and ultramorphology of deminaralized enamel
No full textObjective: To study the effect of two remineralizing agents on the microhardness and ultramorphology of deminaralized enamel. Methods: Human maxillary anterior teeth were demineralized by phosphoric acid. Specimens were divided into two groups (G) according to the remineralizing agent tested: G1: Whitesmile mousse, G2: Clinpro™ White Varnish. The remineralizing agents were applied for three minutes per day for seven consecutive days. Microhardness and ultramorphological evaluation was tested for untreated enamel (control), demineralized enamel and remineralized enamel. Results: One-way ANOVA revealed statistical significant decrease on mean microhardness values after specimens' demineralization comparing to the control group. There was a significant increase on mean microhardness after the application of the remineralizing agents (p≤0.05) compared to the demineralized specimens. There was an insignificant difference between mean microhardness for specimens treated with Whitesmile mousse and Clinpro™ White Varnish at p≥0.05. SEM microphotographs of untreated enamel surface showed normal smooth enamel, while demineralized enamel showed a honeycomb like structure. Specimens treated with the remineralizing agents showed homogenous deposits filling the interprismatic spaces. Conclusion: Both remineralizing agents provided similar profit. However, Clinpro™ White varnish could be beneficial for patients who want to keep awayfrom using fluoride or for children at danger of developing fluorosis
Future Journal of Pharmaceutical Sciences
No full textFuture Journal of Pharmaceutical Sciences issued under the auspicious of Future University in Egypt. The Journal publishes communications, original research articles, review articles and case studies on all aspects of the pharmaceutical sciences and related clinical subjects that are of interest to all health professionals with strong emphasis on originality and scientific quality. Specifically, the journal publishes original researches in all fields that interest Pharmacists as drug absorption & metabolism, pharmacokinetics & dynamics, drug delivery including gene delivery, drug targeting and nano-technology, Pharmacotherapeutics, community and hospital pharmacy as well as Pharmaceutical and hospital management. The scope will also cover researches in toxicology, cell and molecular biology, biomedical research, basic & clinical and pharmaceutical microbiology, Pharmaceutical biotechnology, medicinal chemistry, Phytochemistry and nutraceuticals.Proceedings of scientific meetings may be published as special issues or supplements to the Journal. Manuscripts submitted to the Journal are only accepted on the understanding that: they are subject to editorial review (generally by two independent referees); they have not been, and will not be, published in whole or in part in any other journal