Effects of Field-applied Carbon Dioxide Laser Radiation on Waterhyacinth (eichhornia Crassipes (Mart.) Solm.) PDF Download

Author: Virginia Rose Van Sickle
Publisher:
ISBN:
Category :
Languages : en
Pages : 68

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Author: Katherine S. Long
Publisher:
ISBN:
Category : Aquatic plants
Languages : en
Pages : 164

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Author: Katherine S. Long
Publisher:
ISBN:
Category : Aquatic plants
Languages : en
Pages : 156

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Book Description
As a result of earlier experiments indicating the possibility of controlling water hyacinths with laser irradiation, a prototype CO2 laser system (10.6-micrometer wavelength) was designed, fabricated, and adapted for use in an outdoor environment. In the fall of 1972, the laser system was tested and evaluated near Bayou Gauche, Louisiana. Deficiencies were discovered in the test of the prototype. A scanning, flat-mirror system was substituted for the spherical-mirror system. A chiller system was installed to dissipate the excessive heat. Finally, the effects of the salt-air environment were eliminated when the system was moved to Lake Concordia, Louisiana, a freshwater inland lake, where in 1973 and 1974 controlled irradiation ranging from 0.2 to 100 J/sq cm was applied to plots of water hyacinth plants collected in the lake. Plant biomass, height, number, coverage, and number of flowers were measured periodically. Results of the analyses show that laser irradiation causes a significant decrease in growth rates with an increase in irradiation level, but this effect decreases as time passes until there is no significant difference between treated and control plots. Rates of photosynthesis were not significantly affected by laser irradiation.

Author:
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Category : Air
Languages : en
Pages : 728

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Indexes material from conference proceedings and hard-to-find documents, in addition to journal articles. Over 1,000 journals are indexed and literature published from 1981 to the present is covered. Topics in pollution and its management are extensively covered from the standpoints of atmosphere, emissions, mathematical models, effects on people and animals, and environmental action. Major areas of coverage include: air pollution, marine pollution, freshwater pollution, sewage and wastewater treatment, waste management, land pollution, toxicology and health, noise, and radiation.

Author: Surajit K. De Datta
Publisher: Int. Rice Res. Inst.
ISBN: 0471097608
Category : Rice
Languages : en
Pages : 642

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Author: Manuel J. Reigosa
Publisher: Springer Science & Business Media
ISBN: 1402042809
Category : Science
Languages : en
Pages : 635

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There are many good books in the market dealing with the subject of allelopathy. When we designed the outline of this new book, we thought that it should include as many different points of view as possible, although in an integrated general scheme. Allelopathy can be viewed from different of perspectives, ranging from the molecular to the ecosystem level, and including molecular biology, plant biochemistry, plant physiology, plant ecophysiology and ecology, with information coming also from the organic chemistry, soil sciences, microbiology and many other scientific disciplines. This book was designed to include a complete perspective of allelopathic process. The book is divided into seven major sections. The first chapter explores the international development of allelopathy as a science and next section deals with methodological aspects and it explores potential limitations of actual research. Third section is devoted to physiological aspects of allelopathy. Different specialists wrote about photosynthesis, cell cycle, detoxification processes, abiotic and biotic stress, plant secondary metabolites and respiration related to allelopathy. Chapters 13 through 16 are collectively devoted to various aspects of plant ecophysiology on a variety of levels: microorganisms, soil system and weed germination. Fundamental ecology approaches using both experimental observations and theoretical analysis of allelopathy are described in chapters 16 and 17. Those chapters deal with the possible evolutionary forces that have shaped particular strategies. In the section named “allelopathy in different environments”, authors primarily center on marine, aquatic, forest and agro ecosystems. Last section includes chapters addressing application of the knowledge of allelopathy.

Author: Mejdi Jeguirim
Publisher: Elsevier
ISBN: 0128148942
Category : Technology & Engineering
Languages : en
Pages : 508

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Char and Carbon Materials Derived from Biomass: Production, Characterization and Applications provides an overview of biomass char production methods (pyrolysis, hydrothermal carbonization, etc.), along with the characterization techniques typically used (Scanning Electronic Microscopy, X-Ray Fluorescence, Nitrogen adsorption, etc.) In addition, the book includes a discussion of the various properties of biomass chars and their suitable recovery processes, concluding with a demonstration of applications. As biomass can be converted to energy, biofuels and bioproducts via thermochemical conversion processes, such as combustion, pyrolysis and gasification, this book is ideal for professionals in energy production and storage fields, as well as professionals in waste treatment, gas treatment, and more. - Provides a discussion of sources of biomass feedstocks, such as agricultural, woody plants and food processing residue - Discusses the various production processes of biomass chars, including pyrolysis and hydrothermal carbonization - Explores various applications of biomass chars within different industries, including energy and agronomy

Author: Santhakumar Mohan
Publisher: Springer Nature
ISBN: 9811598096
Category : Technology & Engineering
Languages : en
Pages : 909

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This book comprises the select proceedings of the International Conference on Materials, Design and Manufacturing for Sustainable Environment (ICMDMSE 2020). The primary focus is on emerging materials and cutting-edge manufacturing technologies for sustainable environment. The book covers a wide range of topics such as advanced materials, vibration, tribology, finite element method (FEM), heat transfer, fluid mechanics, energy engineering, additive manufacturing, robotics and automation, automobile engineering, industry 4.0, MEMS and nanotechnology, optimization techniques, condition monitoring, and new paradigms in technology management. Contents of this book will be useful to students, researchers, and practitioners alike.

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 772

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Author: Baoshan Xing
Publisher: John Wiley & Sons
ISBN: 1119275822
Category : Science
Languages : en
Pages : 506

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Book Description
Details the source, release, exposure, adsorption, aggregation, bioavailability, transport, transformation, and modeling of engineered nanoparticles found in many common products and applications Covers synthesis, environmental application, detection, and characterization of engineered nanoparticles Details the toxicity and risk assessment of engineered nanoparticles Includes topics on the transport, transformation, and modeling of engineered nanoparticles Presents the latest developments and knowledge of engineered nanoparticles Written by world leading experts from prestigious universities and companies