Reply [to “Comments on paper by L. D. Cohen, S. Barr, R. Krablin, and H. Newstein, ‘Steady-state vertical turbulent diffusion of radon’”]

Cohen, L. D.; Barr, S.; Krablin, R.; Newstein, Herman

doi:10.1029/jc077i030p06026

Cited by 2 publications

(4 citation statements)

References 2 publications

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“…Decay signatures should therefore be more evident at heliocentric distances below r = 0.3 AU. Since this study relies on the monochromatic assumption, it will be of interest to inspect in future works whether and how the present results change in the case of more general non-monochromatic fluctuations (Cohen & Dewar 1974;Malara and Velli 1996), also by means of numerical simulations in the expanding solar wind generalizing the results of Tenerani & Velli (2013).…”

Section: Discussionmentioning

confidence: 89%

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The Parametric Instability of Alfvén Waves: Effects of Temperature Anisotropy

Tenerani

Velli

Hellinger

2017

ApJ

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We study the stability of large amplitude, circularly polarized Alfvén waves in an anisotropic plasma described by the double-adiabatic/CGL closure, and in particular the effect of a background thermal pressure anisotropy on the well-known properties of Alfvén wave parametric decay in Magnetohydrodynamics (MHD). Anisotropy allows instability over a much wider range of values of parallel plasma beta (β ) when ξ = p 0⊥ /p 0 > 1. When the pressure anisotropy exceeds a critical value, ξ ≥ ξ * with ξ * 2.7, there is a new regime in which the parametric instability is no longer quenched at high β and in the limit β 1 the growth rate becomes independent of β . In the opposite case of ξ < ξ * , the instability is strongly suppressed with increasing parallel plasma beta, similarly to the MHD case. We analyze marginal stability conditions for parametric decay in the (ξ, β ) parameter space, and discuss possible implications for Alfvénic turbulence in the solar wind. arXiv:1711.06371v1 [physics.space-ph]

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Section: Discussionmentioning

confidence: 89%

“…In particular, Landau damping reduces the growth rate of parametric decay at most by a factor of order two. For this reason, we have decided not to include it here, although it may be of interest to inspect its effects in future works devoted to more general, non-monochromatic waves (Cohen & Dewar 1974).…”

Section: Configurationmentioning

confidence: 99%

The Parametric Instability of Alfvén Waves: Effects of Temperature Anisotropy

Tenerani

Velli

Hellinger

2017

ApJ

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“…Moir (1954), Newman (1968) and Little et a1 (1971) have pursued this objective in the Australian context, presenting improved methods for assaying blood inorganic phosphorus (P) . However, the animals' main phosphorus stores are in the skeleton and Little (1972) has described a method for bone biopsy, and Cohen (1973) has compared this tissue with hair and blood for determining phosphorus status.…”

Section: Introductionmentioning

confidence: 99%

“…Despite some limitations (see Cohen 1973), blood inorganic phosphorus has been used extensively and, because of practical considerations, will probably be the most useful diagnostic procedure in assessing phosphorus status in cattle. The method involves, sequentially, the collection of blood (usually from the jugular vein or coccygeal vessels), the preparation of the suitable blood fraction (whole blood, plasma or serum), protcin removal from the fraction, the colorimetric mcasurement of P, and the comparison of the result with published "normal" values.…”

Section: Introductionmentioning

confidence: 99%

Some Factors Affecting the Measurement of Blood Inorganic Phosphorus in Cattle

Teleni

Dean²,

Murray

1976

Aust Veterinary J

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Sixty cows were studied over 3 days, to determine the effect of site of sampling, handling stress and the tranquilliser xylazine hydrochloride, on blood inorganic phosphorus (P). Jugular venous and coccygeal mixed arterial and venous blood were compared. Saliva was also analysed for P. Buffered and unbuffered trichloracetic acid (TCA) were compared as deproteinising agents. Tail blood P was consistently 12% (range 7-17%) higher than that from the jugular vein (P less than 0.01). This difference decreased when jugular blood was sampled first but increased following administration of the tranquilliser. The drug significantly (P less than 0.01) increased the concentration of P in the saliva on 2 out of 3 days. The possible role of salivary P in affecting jugular P values, is discussed. The buffered TCA analyses gave consistently lower P readings than the unbuffered analyses. The magnitude of this effect was time dependent, being greater when the samples were left for 4 days (P less than 0.05) than when analysed the next day. There was a very strong correlation between plasma and whole blood P. It was concluded that the tissue of choice in phosphorus studies is tail blood (plasma or serum) treated with buffered TCA.

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Reply [to “Comments on paper by L. D. Cohen, S. Barr, R. Krablin, and H. Newstein, ‘Steady-state vertical turbulent diffusion of radon’”]

Cited by 2 publications

References 2 publications

The Parametric Instability of Alfvén Waves: Effects of Temperature Anisotropy

The Parametric Instability of Alfvén Waves: Effects of Temperature Anisotropy

Some Factors Affecting the Measurement of Blood Inorganic Phosphorus in Cattle

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