age-varied
9.The Hexi area is located at the tectonic convergence of the north Qilian Caledonian orogen,Alex block and Ordos block where was the transitional period between the early Paleozoic oceanic stage and the Mesozoic continental basin developing stage in the mid-late Paleozoic age. The explanations proposed for the formation mechanism of the mid-late Paleozoic basins are varied.
10.Effects of four treatments in calcium supply were studied with ISA brown hens from the age of 22 weeks for 98 days. The treatments were whole lime stone particle, lime stone meal (1/3)+lime stone particle (2/3), lime stone meal, and lime stone meal in varied calcium supply (i. e. high Ca supply am. and Low Ca supply pm. )

