Download or read book Contribution l tude de l absorption des oxydes d azote dilu s dans l air par des dissolvants organiques written by Jean F. Breithaupt and published by . This book was released on 1910 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude de l absorption des oxydes d azote dilu s dans l air par des dissolvants organiques Th se par Jean F Breithaupt written by Jean F. Breithaupt and published by . This book was released on 1910 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Le transport des oxydes d azote dans l atmosph re written by R. W. Shaw and published by Le Service 1984.. This book was released on 1984 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude de la peroxydation de l oxyde d azote written by Walter Pfeiffer and published by . This book was released on 1924 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude de la peroxydation de l oxyde d azote written by Georges Malet and published by . This book was released on 1923 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude de la r partition du dioxyde d azote l interface air eau written by François Cupelin and published by . This book was released on 1977 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Absorption s lective du dioxyde de soufre par des solvants organiques written by Marcel Van Dam and published by . This book was released on 1998 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail porte sur l'utilisation de solvants organiques en vue de l'extraction sélective de dioxyde de soufre (SO2) des effluents gazeux industriels, le processus devant être réversible afin de pouvoir récupérer et recycler le solvant ; le SO2 ainsi concentré pourra être recyclé. Cette étude a été effectuée en quatre étapes : (1) choix des solvants, (2) étude des interactions entre le SO2 dissous et les solvants, (3) mesure de la solubilité de SO2, (4) mesure de la cinétique d'absorption de SO2. Des paramètres indiquant la basicité de type Lewis du solvant ont permis de corréler les valeurs de solubilité issues de la littérature. En prenant en compte des critères concernant la capacité, la sélectivité, la régénération, la pression de vapeur et la toxicité, nous avons retenu trois solvants : la N-Méthylpyrrolidone-2 (NMP), la N,N-Dimethylpropyleneuree (DMPU), la N-Methyldiethanolamine (MDEA). Nous avons constaté que des mélanges équimolaires de SO2 et de solvant peuvent rester sous forme solide au-dessus du point de fusion des solvants purs. Des mesures par spectrométrie dans l'infrarouge et dans l'ultraviolet/visible et ainsi que par résonance magnétique nucléaire, ont montré que l'interaction entre le SO2 et la NMP et entre le SO2et la DMPU est plus particulièrement localisée sur le groupe carbonyle et qu'elle est complètement réversible. En revanche, le SO2 réagit avec la MDEA de manière irréversible dans nos conditions expérimentales. La solubilité de SO2 a été mesurée en fonction de sa pression partielle jusqu'a 1kPa dans un réacteur agité de 100 mL de volume, et de 2 a 100 kPa dans une petite colonne à bulles de 40 mL environ. Les points expérimentaux sont modélisés de façon très satisfaisante par un modèle original, ou la non-idéalité est exprimée en termes d'interactions physiques et chimiques. L’étude de la cinétique d'absorption a consisté en la mesure des profils de concentration (de SO2 dans l'azote) radiaux dans un réacteur à film tombant. Les profils expérimentaux sont qualitativement en accord avec la théorie.

Download or read book Contribution l tude de la peroxydation de l oxyde d azote written by Walter Pfeiffer and published by . This book was released on 1923 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude de la peroxydation de l oxyde d azote written by Walter Pfeiffer (physicien.) and published by . This book was released on 1924 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cropping Systems Land Tenure and Social Diversity in Wenchi Ghana written by Samuel Adjei-Nsiah and published by . This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, there is still considerable scope for further development of these self-organised innovations.

Download or read book Oxydes d azote written by and published by . This book was released on 1978 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book Frontline and Factory written by Roy MacLeod and published by Springer Science & Business Media. This book was released on 2007-05-06 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents a first considered attempt to study the factors that conditioned industrial chemistry for war in 1914-18. Taking a comparative perspective, it reflects on the experience of France, Germany, Austria, Russia, Britain, Italy and Russia, and points to significant similarities and differences. It looks at changing patterns in the organisation of industry, and at the emerging symbiosis between science, industry and the military.

Download or read book UNESCO General History of Africa Vol I Abridged Edition written by Jacqueline Ki-Zerbo and published by Univ of California Press. This book was released on 1990 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description

Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.

Download or read book Agrochimica written by International Atomic Energy Agency and published by . This book was released on 1977 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic matter and soil productivity; Turnover of plant residues; Mineralization of organic compounds; Dynamics of organic forms of nitrogen; Nitrogen economy; Biodegradation of organic matter; Biochemical transformation of organic matter; Bitumens in soil organic matter; Characterization of humic acids; Carbon dating; Modern techniques and their implact on soil organic matter research; Sludge; Soil organic matter components and plant metabolism; Interaction between agrochemicals and organic matter; Peat.

Download or read book The Global Carbon Cycle and Climate Change written by David E. Reichle and published by Elsevier. This book was released on 2019-11-12 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Carbon Cycle and Climate Change examines the global carbon cycle and the energy balance of the biosphere, following carbon and energy through increasingly complex levels of metabolism from cells to ecosystems. Utilizing scientific explanations, analyses of ecosystem functions, extensive references, and cutting-edge examples of energy flow in ecosystems, it is an essential resource to aid in understanding the scientific basis of the role played by ecological systems in climate change. This book addresses the need to understand the global carbon cycle and the interrelationships among the disciplines of biology, chemistry, and physics in a holistic perspective. The Global Carbon Cycle and Climate Change is a compendium of easily accessible, technical information that provides a clear understanding of energy flow, ecosystem dynamics, the biosphere, and climate change. "Dr. Reichle brings over four decades of research on the structure and function of forest ecosystems to bear on the existential issue of our time, climate change. Using a comprehensive review of carbon biogeochemistry as scaled from the physiology of organisms to landscape processes, his analysis provides an integrated discussion of how diverse processes at varying time and spatial scales function. The work speaks to several audiences. Too often students study their courses in a vacuum without necessarily understanding the relationships that transcend from the cellular process, to organism, to biosphere levels and exist in a dynamic atmosphere with its own processes, and spatial dimensions. This book provides the template whereupon students can be guided to see how the pieces fit together. The book is self-contained but lends itself to be amplified upon by a student or professor. The same intellectual quest would also apply for the lay reader who seeks a broad understanding." --W.F. Harris - Provides clear explanations, examples, and data for understanding fossil fuel emissions affecting atmospheric CO2 levels and climate change, and the role played by ecosystems in the global cycle of energy and carbon - Presents a comprehensive, factually based synthesis of the global cycle of carbon in the biosphere and the underlying scientific bases - Includes clear illustrations of environmental processes