Search for dissertations about: "assimilation of IT"

Showing result 16 - 20 of 98 swedish dissertations containing the words assimilation of IT.

  2. 16. The Heterocysts of Nostoc punctiforme : From Proteomics to Energy Transfer

    Author : Tanai Cardona; Ann Magnuson; Matthias Rögner; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nostoc punctiforme; heterocyst; photosynthesis; thylakoid; isolation; proteomics; photosystem; energy transfer; hydrogen; Biochemistry; Biokemi; biokemi; Biochemistry;

    Abstract : The aim of this thesis is to provide a thorough characterization of the photosynthetic machinery from the heterocysts of Nostoc punctiforme strain ATCC 29133. In this thesis I describe the protocols I have optimized for the isolation of thylakoids from vegetative cells, the purification of heterocysts and the isolation of thylakoids from the purified heterocysts. READ MORE

  4. 17. On Numerical Tracer Advection in the Stratosphere and Assimilation of Data from Satellites

    Author : JOHN RÖSEVALL; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; stratosphere; transport modelling; O3; ozone depletion; data assimilation;

    Abstract : Since the early 1980's, large scale ozone depletion has been observed in the lower regions of the ozone layer over Antarctica when sunlight returns to the polar region in the early spring. The destruction of ozone is attributed to anthropogenic emissions of freon and halon compounds that have augmented the natural stratospheric concentrations of nonreactive Clx and Brx reservoir species with several hundred percent. READ MORE

  5. 18. Decadal analysis of stratospheric ozone depletion using data assimilation and Odin/SMR measurements

    Author : Kazutoshi Sagi; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ozone loss; remote sensing; stratosphere; limb sounding; data assimilation;

    Abstract : Serious ozone depletion has been measured every Antarctic spring since the early 80’s. This ozone depletion is considered to be a result of photo-chemical reactions and catalytic cycles resulting from anthropogenic halogen containing gases. facilitated by the formation of Polar Stratospheric Clouds (PSCs). READ MORE

  6. 19. Analysis of stratospheric ozone depletion in the Arctic using a data assimilation technique

    Author : Kazutoshi Sagi; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; data assimilation; ozone loss; limb sounding; remote sensing; stratosphere;

    Abstract : Serious ozone depletion has been measured every Antarctic spring since the early 80’s. This ozone depletion is considered to be a result of photo chemical reactions and cat- alytic cycles resulting from anthropogenic halogen containing gases. READ MORE

  7. 20. Immigration, security and the public debate on US language policy : A critical discourse analysis of language attitudes in the United States of America

    Author : Soraya Tharani; Anna-Brita Stenström; Luleå tekniska universitet; []
    Keywords : HUMANIORA; HUMANITIES; national identity; societal security; language policy; ethnolinguistic conflict; human rights; language rights; ethnicity; multilingualism; immigration; critical discourse analysis; language attitudes; English language; Spanish language; United States;

    Abstract : The narrative of the United States is of a "nation of immigrants" in which the language shift patterns of earlier ethnolinguistic groups have tended towards linguistic assimilation through English. In recent years, however, changes in the demographic landscape and language maintenance by non-English speaking immigrants, particularly Hispanics, have been perceived as threats and have led to calls for an official English language policy. READ MORE