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Kreikebaum, J M,Dove, A,Livingston, W,Kim, E,Siddiqi, I IOP 2016 Superconductor science & technology Vol.29 No.10
<P>We present a systematic study of the effects of shielding on the internal quality factors <img ALIGN='MIDDLE' ALT='$({Q}_{{\rm{i}}})$' SRC='http://ej.iop.org/images/0953-2048/29/10/104002/sustaa3517ieqn1.gif'/> of Al and TiN microwave resonators designed for use in quantum coherent circuits. Measurements were performed in an adiabatic demagnetization refrigerator, where typical magnetic fields of 200 <I>μ</I>T are present at the unshielded sample stage. Radiation shielding consisted of 100 and 500 mK Cu cans coated with infrared absorbing epoxy. Magnetic shields consisted of Cryoperm 10 and Sn plating of the Cu cans. A 2.7 K radiation can and coaxial thermalization filters were present in all measurements. TiN samples with <img ALIGN='MIDDLE' ALT='${Q}_{{\rm{i}}}=1.3\,\times {10}^{6}$' SRC='http://ej.iop.org/images/0953-2048/29/10/104002/sustaa3517ieqn2.gif'/> at 100 mK exhibited no significant variation in quality factor when tested with limited shielding. In contrast, Al resonators showed improved <img ALIGN='MIDDLE' ALT='${Q}_{{\rm{i}}}$' SRC='http://ej.iop.org/images/0953-2048/29/10/104002/sustaa3517ieqn3.gif'/> with successive shielding, with the largest gains obtained from the addition of the first radiation and magnetic shields and saturating before the addition of Sn plating infrared absorbing epoxy.</P>
Prawirodigdo, S.,King, R.H.,Dunkin, A.C.,Dove, H. Asian Australasian Association of Animal Productio 1990 Animal Bioscience Vol.3 No.2
An experiment was conducted to compare the traditional weigh-suckle-weigh method and the $D_2O$ dilution technique to estimate milk consumption of suckling piglets. Milk consumption of 50 individual piglets was estimated on four consecutive days by the $D_2O$ dilution method and for approximately 8 hours on both the second and fourth day by the traditional WSW method. The average milk intake of piglets estimated by the $D_2O$ dilution method was 45.0 g/hr and there were no significant differences between the four measurement period. The traditional weigh-suckle-weigh method provided a significantly lower estimate of milk consumption (36.8 g/hr). However correction for weight losses associated with milk suckling and weighing would increase the weigh-suckle-weigh estimate to a level similar to that determined by the $D_2O$ dilution method.
Prawirodigdo, S.,King, R.H.,Dunkin, A.C.,Dove, H. Asian Australasian Association of Animal Productio 1990 Animal Bioscience Vol.3 No.2
Two experiments were conducted to determine the validity of the deuterium oxide ($D_2O$) dilution method to estimate milk intake by pigs. A total of 39 piglets weaned from their dams 24 - 36 hours after birth and trained to drink from artificial nipples, were used for two experiments. Estimates of milk replacer consumption of individual piglets over 1, 3, 5 and 7 days were made by the $D_2O$ dilution method and by dissappearance. Milk intakes estimated by this $D_2O$ dilution method were significantly correlated ($R^2$ = 0.98-0.99) with milk intake measured by disappearance. The average difference between estimates by disappearance and estimates by the $D_2O$ dilution method were -1%, +0.5%, +0.5% and -2.1% for measurement period of 1, 3, 5 and 7 days respectively.