Reference

Clinical chemistry of grain-fed cattle

Clinical chemistry of grain-fed cattle. III. Plasma thyroid profiles with notes on interference by EDDI and hypothyroid values in Herefords. Bide, R. W. (Anim. Dis. Res. Inst., Agric. Canada, Lethbridge, Alberta, Can.). 51-48-9 and 6893-02-3 are also occured in this study. Can. J. Anim. Sci., 56(3), 457-65 (English) 1976. CODEN: CNJNAT. DOCUMENT TYPE: Journal CA Section: 18 (Animal Nutrition) Section cross-reference(s): 1 Linear thyroid profiles consisting of total plasma I (TI), protein-bound I (PBI), thyroxine [51-48-9] I (T4I), triiodothyronine [6893-02-3] uptake (T3U) and the corresponding indices of T7I = T4I*T3U/100 (Barnett, D. B., et al., 1973) and thyroid-binding-globulin est. TBGE = T3U-1 + T4I-0.25 were prepd. for grain-fed (test) and hay-fed (control) Hereford steers over a 186-day feeding period. The grain diet, which contained 20 mg/kg of I as ethylenediamine-2HI (EDDI) [333-18-6], consisted of 90% steam-rolled barley, 5% beet pulp pellets and 5% protein-mineral conc., supplemented with local alfalfa hay fed at the rate of 0.9 kg/head/day. The control diet was local alfalfa hay given ad libitum. CoI salt blocks contg. 0.028% Ca (IO3)2 were available to both groups, free choice. In the test group, TI increased 3-fold immediately upon introduction of the grain diet, and remained elevated. Plasma PBI increased from 5.0 to 12 .mu.g/dl on day 50 and then fell slowly to 9.0 .mu.g/dl by day 180. T4I, T7I, and TBGE decreased during the 1st 30 days and returned to the original values of 4.6, 2.3, and 1.48 .mu.gI/dl. T3U decreased from 51 to 48% over the feeding period. The PBI and T4I values were not related, probably because EDDI or a metabolite of it interferes with the PBI test. In the control group, the profile values at the beginning and end of the feeding period were, in .mu.gI/dl: TI 7.3 and 5.6, PBI 5.9 and 5.3, T4I 4.2 and 2.8, T3U% 55.8 and 54.4. These values provided corresponding index values of T7I 2.3 and 1.5 and TBGE 1.44 and 1.31. The control diet did not provide enough available I; the thyroid profiles showed a trend towards hypothyroidism, and histol. examn. post-mortem revealed thyroid hyperplasia. .

Drying of polyacrylamide aqueous solutions

Drying of polyacrylamide aqueous solutions. Noda, Kimihiko; Fujiura, Yoji; Yamamoto, Jiro; Kitamura, Eiichi (Sanyo Chemical Industries, Ltd., Japan). Japan. Kokai JP 53003444 13 Jan 1978 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L057-00. APPLICATION: JP 76-77512 30 Jun 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Aq. solns. of vinyl polymers are dried in the presence of water-sol. polyamine salts or quaternized polyamines to prevent crosslinking of the polymer during drying. Thus, a mixt. of acrylamide 100, H2O 900, and ethylenediamine-2HCl [333-18-6] 1 kg was stirred at 30-40° in the presence of (NH4)2S2O8 and NaHSO3 to give a polymer (I) [9003-05-8] hydrogel which was extruded through 1-cm-diam. orifices into MeOH, and the strands contg. 60% H2O were dried in vacuo at 60° and ground. The powder contg. 8% H2O was completely sol. in H2O, and a 1% I soln. had viscosity 3500 cP at 30°.