title: MHD‐driven kinetic dissipation in the solar wind and corona

authors: Leamon, R. J.

subjects: MHD

abstract: Mechanisms for the deposition of heat in the lower coronal plasma are discussed, emphasizing recent attempts to reconcile the fluid and kinetic perspectives. Structures at magnetohydrodynamic (MHD) scales may drive a nonlinear cascade, preferentially exciting high perpendicular wavenumber fluctuations. Relevant dissipative kinetic processes must be identified that can absorb the associated energy flux. The relationship between the MHD cascade and direct cyclotron absorption, including cyclotron sweep, is discussed. We conclude that for coronal and solar wind parameters the perpendicular cascade cannot be neglected and may be more rapid than cyclotron sweep. Solar wind observational evidence suggests the relevance of the ion inertial scale, which is associated with current sheet thickness during reconnection. We conclude that a significant fraction of dissipation in the corona and solar wind likely proceeds through a perpendicular cascade and small-scale reconnection, coupled to kinetic processes that act at oblique wavevectors.

text: MHD‐driven kinetic dissipation in the solar wind and corona Mechanisms for the deposition of heat in the lower coronal plasma are discussed, emphasizing recent attempts to reconcile the fluid and kinetic perspectives. Structures at magnetohydrodynamic (MHD) scales may drive a nonlinear cascade, preferentially exciting high perpendicular wavenumber fluctuations. Relevant dissipative kinetic processes must be identified that can absorb the associated energy flux. The relationship between the MHD cascade and direct cyclotron absorption, including cyclotron sweep, is discussed. We conclude that for coronal and solar wind parameters the perpendicular cascade cannot be neglected and may be more rapid than cyclotron sweep. Solar wind observational evidence suggests the relevance of the ion inertial scale, which is associated with current sheet thickness during reconnection. We conclude that a significant fraction of dissipation in the corona and solar wind likely proceeds through a perpendicular cascade and small-scale reconnection, coupled to kinetic processes that act at oblique wavevectors.

year: 2000

title: Studies of transformation and particle-binding of resin acids during oxidative treatment of effluent from Two New Zealand pulp mills

authors: Kanber, S. A.

subjects: resin acid transformation

abstract: Reactor studies of aerobic degradation of effluent from the first and last ponds of the treatment system of two New Zealand pulp and paper mills indicated that filterable BOD5, resin acids and transformed resin acids, free and bound, degraded at similar rates. During oxidative treatment the resin acids of untreated effluent became increasingly bound to particulate material and a sediment high in abiet-13-enoic acid was formed.

text: Studies of transformation and particle-binding of resin acids during oxidative treatment of effluent from Two New Zealand pulp mills Reactor studies of aerobic degradation of effluent from the first and last ponds of the treatment system of two New Zealand pulp and paper mills indicated that filterable BOD5, resin acids and transformed resin acids, free and bound, degraded at similar rates. During oxidative treatment the resin acids of untreated effluent became increasingly bound to particulate material and a sediment high in abiet-13-enoic acid was formed.

year: 2008

title: The enowning of thought and whakapapa: Heidegger's fourfold

authors: Mika, Carl Te Hira

subjects: Maori

abstract: Throughout colonization, Maori have been constantly urged to think of their terminology, and the objects it relates to, along constrained lines. In this practice, the self and other things are arguably restricted and impoverished. However, certain frequently used Maori terms – such as “whakapapa” and “whakaaro” – may be read alongside Heidegger’s “Ereignis,” revealing a completely other sense to them than their orthodox, respective translations of “genealogy” and “to think” allow. This kind of thinking in concert with an existential philosophy is an active process that allows for the “freeing up” of entities and a colonized group. With Heidegger’s assistance, the terms, and the original sources they refer to, reflect a kind of “Geviert”/Fourfold that ensures a continual strife and interplay between things in the world and self.

text: The enowning of thought and whakapapa: Heidegger's fourfold Throughout colonization, Maori have been constantly urged to think of their terminology, and the objects it relates to, along constrained lines. In this practice, the self and other things are arguably restricted and impoverished. However, certain frequently used Maori terms – such as “whakapapa” and “whakaaro” – may be read alongside Heidegger’s “Ereignis,” revealing a completely other sense to them than their orthodox, respective translations of “genealogy” and “to think” allow. This kind of thinking in concert with an existential philosophy is an active process that allows for the “freeing up” of entities and a colonized group. With Heidegger’s assistance, the terms, and the original sources they refer to, reflect a kind of “Geviert”/Fourfold that ensures a continual strife and interplay between things in the world and self.

year: 2014