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1. |
Record Nr. |
UNINA9910624369403321 |
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Autore |
Gonzales-Alcos Vicky |
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Titolo |
Capacidad biodegradativa de hongos filamentosos frente al polietileno en altura geográfica |
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Pubbl/distr/stampa |
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Puno, : Instituto Universitario de Innovación Ciencia y Tecnología Inudi Perú, 2022 |
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Descrizione fisica |
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1 electronic resource (86 p.) |
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The biodegradation of polyethylenes by microorganisms is a solution for the reduction of contamination by plastics, constituting an important alternative from the point of view of human health, the environment and the economic factor; The purpose of this research was to determine the biodegradability of filamentous fungi against polyethylene; the fungi were isolated from solid plastic waste obtained from the Cancharani dump, taxonomic identification of filamentous fungi with degradative capacity against polyethylene was carried out on the basis of macroscopic characteristics of plate growth and microscopic study using the Microculture sheet technique; The degradative capacity was determined at pH 5 and 20 ° C for 20 days and to determine the pH and temperature conditions where filamentous fungi with biodegradative capacity achieve greater activity against polyethylene was performed using the Kavelman and Kendrick technique at temperatures of 20 and 30 ° C and at pH 4.5 and 8.0. Five species of filamentous fungi were isolated; Aspergillus Flavus, Aspergillus niger, Aspergillus fumigatus, Mucor sp. and Fusarium sp, resulting in having biodegradative capacity at different rating scales and are statistically biodegradable against polyethylene. Aspergillus flavus also showed a greater biodegradability compared to Aspergillus niger at a pH of 4.5, the temperature being indifferent at 20 and 30 ° C, Statistically, both are good biodegradators against polyethylene, which |
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highlights the importance of this research. |
La biodegradación del polietilenos por microorganismos, es una solución para la reducción de la contaminación por plásticos constituyéndose una alternativa importante desde el punto de vista de la salud humana, del medio ambiente y del factor económico; la presente investigación tuvo como objetivo determinar la capacidad biodegradativa de los hongos filamentosos frente al polietileno; los hongos fueron aislados de residuos sólidos obtenidos del botadero de Cancharani, la identificación taxonómica de hongos filamentosos con capacidad degradativa frente al polietileno se realizó en base a características macroscópicas de crecimiento en placa y el estudio microscópico empleando la técnica de Micro cultivo en lámina; la capacidad degradativa se determinó a pH :5 y 20°C durante 20 días y para determinar las condiciones de pH y temperatura donde los hongos filamentosos con capacidad biodegradativa logran mayor actividad frente al polietileno se realizó mediante la técnica de Kavelman y Kendrick a temperaturas de 20 y 30°C y a pH de 4.5 y 8.0. Se aisló cinco especies de hongos filamentosos; Aspergillus Flavus, Aspergillus niger, Aspergillus fumigatus, Mucor sp. y Fusarium sp, resultando tener capacidad biodegradativa en diferentes escalas de calificación y estadísticamente son biodegradadores frente al polietileno así mismo Aspergillus flavus demostró tener mayor capacidad biodegradativa frente al Aspergillus niger a un pH de 4.5 ,siendo indiferente la temperatura a 20 y 30°C , estadísticamente ambos son buenos biodegradadores frente al polietileno lo cual resalto la importancia de esta investigación. |
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2. |
Record Nr. |
UNISA996255450303316 |
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Autore |
Shover Larry |
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Titolo |
Trading options in turbulent markets : master uncertainty through active volatility management / / Larry Shover |
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Pubbl/distr/stampa |
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Hoboken, New Jersey : , : Bloomberg Press, , 2010 |
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©2010 |
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ISBN |
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1-118-53199-X |
9786612708039 |
1-282-70803-1 |
0-470-87912-2 |
0-470-93480-8 |
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Edizione |
[1st edition] |
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Descrizione fisica |
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1 online resource (239 p.) |
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Collana |
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Disciplina |
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Soggetti |
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Options (Finance) |
Risk management |
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Praise for Trading Options inTurbulent Markets "Of the five basic variables that drive option pricing models, the volatility assumption is far and away the most impactful. Mr. Shover's definitive work, exploring all aspects of the world of volatility, truly is a gift to the investing public." — William Floersch , President and CEO, Fortis Clearing Americas, LLC "There are a myriad of 'Options 101' books for the beginning options investor and painfully lengthy and dry graduate-level books on advanced strategies. Larry has found the sweet spot in between, offering a great book on intermediate option strategies. I can heartily endorse Trading Options in Turbulent Markets as THE book for investors seeking to enhance their knowledge of derivative trading and createa low-risk, high-return investment game plan." — Jon "Doctor J" Najarian , cofounder, tradeMONSTER.com "Mr. Shover has managed to marry a thoughtful presentation of volatility as it relates to options pricing and options trading, with a narrative that goes beyond the purely theoretical and focuses on the practical implications of this |
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'measure of instability' (first line of Chapter 2) for those who use options. In light of the tumultuous events that have churned the global financial markets, a read on the practical implications of volatility seems prudent for all who choose to employ options." — Pat Arbor , Chairman Emeritus, CBOT, and current Director ofFirst Chicago Bank and Trust "Shover's book offers valuable insights from his real-life experience in trading volatile markets." — Jim Bittman , Senior Instructor, The Options Institute at CBOE, and author of Trading Options as a Professional "Larry Shover was a successful options trader in his years at CRT and a valuablemember of our team. His book is both accessible and informative, and its pages are filled with insights gained from many years of experience. Larry writes with passion and acumen, making this a book that will do more than just sit on your shelf." — Joseph Ritchie , founder, Chicago Research and Trading Group (CRT); founder and Chairman, Fox River Financial Resources, Inc.; andCEO, Rwanda Development Board |
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