نتایج جستجو برای: clumping factor a

تعداد نتایج: 13594407  

2003
J. P. Cassinelli

Observations with the Infrared Space Observatory (ISO) SWS spectrometer are used to constrain the velocity law and wind clumping of the well-studied Wolf-Rayet (WR) star WR 136 (HD 192163) (WN6). Because the free-free continuum opacity in WR winds increases steadily with wavelength in the IR, each point in the continuous spectrum may be regarded as forming in a pseudo-photosphere of larger radi...

Journal: :Proceedings. Biological sciences 2015
Jay M Biernaskie Stuart A West

The evolution of multicellular organisms represents one of the major evolutionary transitions in the history of life. A potential advantage of forming multicellular clumps is that it provides an efficiency benefit to pre-existing cooperation, such as the production of extracellular 'public goods'. However, this is complicated by the fact that cooperation could jointly evolve with clumping, and ...

Journal: :The American journal of tropical medicine and hygiene 2007
Mònica Arman Ahmed Raza Louisa J Tempest Kirsten E Lyke Mahamadou A Thera Abdoulaye Koné Christopher V Plowe Ogobara K Doumbo J Alexandra Rowe

Platelet-mediated clumping of Plasmodium falciparum-infected erythrocytes is an adhesive phenotype commonly found in field isolates that has previously been associated with severe malaria. Here, clumping was assessed in 131 isolates from Malian children. The clumping phenotype was seen in 6% (N = 51) of uncomplicated malaria, 24% (N = 51) of severe malaria, and 45% (N = 29) of high parasitemia ...

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