Laser-induced excitation spectra recorded for the electric-quadrupole 3d(6)4s a6D(J)<--3d(5)4s2a6S(5/2) transitions of atomic Mn, allow assignment of the red emission features, previously observed in Mn/RG (RG=Ar, Kr and Xe) matrices with resonance 3d(5)4s4pz6P(5/2)<--3d(5)4s2 a6S(5/2) excitation, to the metastable a6D(9/2) state. Narrow excitation bands recorded for the red site in the Mn/Kr s...

Background This novel approach describes a rapid and simple method for identification of necrotic vs. viable cells within a mammalian blastocyst. MaterialsAndMethods Hatched bovine blastocysts produced in vitro were first incubated for 30 min in pre-equilibrated culture medium containing propidium iodide (PI; 300μg/ml) and bisbenzimide (Hoechst: H33342; 5μg/ml) fluorescent dyes. Embryos were th...

Forty-two piglets on days 3 and 12 of age were used to determine the rate of intestinal absorption of iron by the red cell radioiron method and to evaluate the effect of age on intestinal absorption of iron. s9 Fe-labelled ferric citrate in a dose of 1 2 /aci per kilogram weight was administered with carrier ferric citrate in 5% fructose solution by stomach tube after 1-hr fast. Two levels of c...

With increasing production of red mud, the environmental problems caused by it are increasingly serious, and thus the integrated treatment of red mud is imminent. This article provides an overview of the composition and the basic characteristics of red mud. The research progress of safe stockpiling and comprehensive utilization of red mud is summarized. The safe stockpiling of red mud can be di...

Postweaning growth and pubertal traits were studied in Hereford, Angus, Red Poll, Brown Swiss, Hereford-Angus crossbred (HXA) and Angus-Hereford crossbred (AX H) bulls from 7 through 13 months of age. Pubertal factors characterized included body weight, testicular size, hormone concentrations, sexual aggressiveness and sperm production. Puberty was defined as the age at which a bull first produ...