Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Door het stijgend gebruik aan pesticiden werden in de loop der jaren bepaalde methoden en systemen ontwikkeld om de vervuiling van pesticiden tegen te gaan. Een van deze manieren zijn de bioremediatiesystemen. Deze werden ontwikkeld om puntverliezen, die een hoge concentratie aan pesticiden bevatten, op te vangen. In deze systemen werd getracht om een verwijdering van de pesticide uit het water te bekomen door sorptie op de biomix of de biodegradatie. De verwijdering in deze bioremediatiesystemen verloopt niet altijd zoals gewenst. Dit komt omdat de verwijdering van de pesticide grotendeels gebaseerd is op reversibele sorptie of omdat de degradatie van de pesticide niet of nauwelijks optreedt. Om deze redenen wordt vandaag de dag onderzoek gericht naar mogelijke methoden om deze bioremediatiesystemen te verbeteren. Eén hiervan is de inoculatie met bepaalde micro-organismen.In deze thesis werd onderzocht of methanotrofen kunnen gebruikt worden voor de degradatie van bepaalde pesticiden, zodat deze als inoculum zouden kunnen dienen voor de bioremediatiesystemen. De keuze voor het gebruik van de methanotrofen is te wijten aan de aspecificiteit van het methaan monooxygenase. Hierbij werden verschillende mengculturen, opgegroeid in kopervrij nitrate mineraal salt medium, gebruikt om zo de expressie van sMMO te stimuleren. Met een van deze mengculturen werd mogelijke co-metabolische degradatie van 15 pesticiden gescreend. Hierbij werden drie co-metabolische degradeerbare pesticiden bekomen. Met name benalaxyl, metazachloor en chloorprofam. Benalaxyl werd voor 66,09% gedegradeerd in 10 dagen. De metazachloorconcentratie was na 10 dagen niet meer meetbaar. De chloorprofamconcentratie werd verminderd met 33,10 % na 10 dagen. Vervolgens werd de metazachloorconcentratie opgedreven, om zo mogelijk inhibitie waar te nemen. Bij een concentratie van 2,5 mg/l metazachloor werd echter geen inhibitie op de methanotrofen waargenomen. Daarnaast werd de methaanconsumptie opgevolgd bij verschillende metazachloorconcentraties. Hierbij is een duidelijk evenredig verband waar te nemen tussen de KM van methaan en de concentratie aan metazachloor.Als laatste werd nagegaan of methanotrofen kunnen gebruikt worden bij de degradatie in een watersedimentmilieu, daar het belangrijk is om de degradatiecapaciteit van de methantrofen te kennen in dit soort milieu. Hierbij is duidelijk dat na de sorptie-effecten de metazachloorconcentratie blijft dalen tot 32,40% van de resterende concentratie na sorptie. Dit zou te wijten zijn aan de degradatie ten gevolge van de methanotrofen. Dit onderzoek toont aan dat methanotrofen de capaciteit hebben voor de degradatie van pesticiden zonder daar veel groeihinder bij te ondervinden. Dit onderzoek was evenwel een “proof of principle”. Voor de implementatie van methanotrofen in bioremediatie zou verder onderzoek nodig zijn.?

Co-metabolisch. --- Kinetiek. --- Metazachloor. --- Methanotrofen. --- Pesticide. --- S220-etnologie. --- T270-milieutechnologie.

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Economic development and environmental issues in China are attracting more and more attention internationally as the country’s large population and vast demands for food, energy, water, minerals, and other resources play an increasingly important role in deciding the fate of the world. There is great interest in learning more about environmental issues in China, but it is not easy to obtain accurate, relevant information because the issues are diverse and are complex phenomena resulting from the interconnections among natural resource constraints and political, social, and institutional systems. This book originally was published in Japanese with the aim of providing Japanese readers with a holistic picture of what was taking place in China with respect to its air, water, energy, and land. The author then prepared an English edition of the same material to use as a book of readings for the Global Environmental Leaders Program at Nagoya University, where he taught many students from Asia and Europe. The book covers the most important environmental issues in China—climatic change, water, air, energy, and resources—together with ongoing policy responses, based on the author’s active involvement in a number of study projects and international cooperation projects in that country. This volume will help readers to understand the causes and results of environmental problems in China and will encourage them to think more deeply about the environmental implications of the country’s rapid economic growth.

Economics --- Geology. Earth sciences --- Environmental protection. Environmental technology --- milieukunde --- economie --- milieu --- milieuzorg --- geografie --- milieutechnologie --- China --- Japan

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

  This book provides readers with a broad understanding of the fundamental principles driving atmospheric flow over complex terrain and provides historical context for recent developments and future direction for researchers and forecasters. The topics in this book are expanded from those presented at the Mountain Weather Workshop, which took place in Whistler, British Columbia, Canada, August 5-8, 2008. The inspiration for the workshop came from the American Meteorological Society (AMS) Mountain Meteorology Committee and was designed to bridge the gap between the research and forecasting communities by providing a forum for extended discussion and joint education. For academic researchers, this book provides some insight into issues important to the forecasting community. For the forecasting community, this book provides training on fundamentals of atmospheric processes over mountainous regions, which are notoriously difficult to predict. The book also helps to provide a better understanding of current research and forecast challenges, including the latest contributions and advancements to the field. The book begins with an overview of mountain weather and forecasting challenges specific to complex terrain, followed by chapters that focus on diurnal mountain/valley flows that develop under calm conditions and dynamically-driven winds under strong forcing. The focus then shifts to other phenomena specific to mountain regions: Alpine foehn, boundary layer and air quality issues, orographic precipitation processes, and microphysics parameterizations. Having covered the major physical processes, the book shifts to observation and modelling techniques used in mountain regions, including model configuration and parameterizations such as turbulence, and model applications in operational forecasting. The book concludes with a discussion of the current state of research and forecasting in complex terrain, including a vision of how to bridge the gap in the future.   Fotini (Tina) Katopodes Chow  is an associate professor in Civil and Environmental Engineering at the University of California, Berkeley. Her current research interests are in performing large-eddy simulations of atmospheric boundary layer flows, with a focus on flow over complex terrain and development and testing of new turbulence models and boundary conditions. She and her students have worked on applications to mountain meteorology, urban dispersion, wind energy, and land-atmosphere coupling, among others.  She received an NSF CAREER award in 2007 and the Presidential Early Career Award for Scientists and Engineers (PECASE) in 2011. Stephan F. J. De Wekker  is an associate professor in Environmental Sciences at the University of Virginia. His research focuses on the investigation of atmospheric boundary layer processes over complex terrain using a combination of field studies, data analysis, and numerical modeling techniques. He seeks to apply his expertise to problems in a multi-disciplinary context such as found at the interface with ecology, air quality, and hydrology.  He received an NSF CAREER award in 2012. Bradley J. Snyder  is currently Head of Science Transfer and Training at the Pacific Storm Prediction Centre in Vancouver, British Columbia. He is responsible for coordinating forecaster training and acts as liaison between operations and research groups. His focus is on mountain and marine meteorology.  He worked as an operational forecaster for 15 years at various locations across Canada and has undertaken research in radar, lightning, and air quality meteorology. He has also been involved in field studies, including forecasting during the Mesoscale Alpine Programme. .

Meteorology. Climatology --- Geology. Earth sciences --- Environmental protection. Environmental technology --- Geography --- radars --- klimatologie --- geografie --- milieutechnologie --- meteorologie

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

The book contains invited lectures and selected contributions presented at the Enzo Levi and XVII Annual Meeting of the Fluid Dynamic Division of the Mexican Physical Society in 2011. It is aimed to fourth year undergraduate and graduate students, and scientists in the field of physics, engineering and chemistry that have interest in Fluid Dynamics from the experimental and theoretical point of view. The invited lectures are introductory and avoid the use of complicate mathematics.  The other selected contributions are also adequate to fourth year undergraduate and graduate students.  The Fluid Dynamics applications include multiphase flow, convection, diffusion, heat transfer, rheology, granular material, viscous flow, porous media flow, geophysics and astrophysics. The material contained in the book includes recent advances in experimental and theoretical fluid dynamics and is adequate for both teaching and research.

Fluid mechanics --- Geophysics --- Environmental protection. Environmental technology --- Physical geography --- vloeistofstroming --- aerodynamica --- milieukunde --- rheologie --- milieu --- milieutechnologie --- fysische geografie --- geofysica

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

This book provides a collection of selected articles that have been submitted to the Earth Observation and Global Changes (EOGC2011) Conference. All articles have been carefully reviewed by an international board of top-level experts. The book covers a wide variety of topics including Physical Geodesy, Photogrammetry & Remote Sensing, High-Resolution and Fast-Revisiting Remote Sensing Satellite Systems, Global Change & Change Detection, Spatial Modelling, GIS & Geovisualization. The articles document concrete results of current studies related to Earth Sciences.  The book is intended for researchers and experts working in the area of Spatial Data Analysis, Environmental Monitoring/Analysis, Global Change Monitoring and related fields.

Space research --- Geodesy. Cartography --- Environmental protection. Environmental technology --- Geography --- geodesie --- fotogrammetrie --- GIS (geografisch informatiesysteem) --- remote sensing --- geografie --- milieutechnologie --- sensoren