This research aims at using a dynamic model of tractor system to support navigation system design for an automatically guided agricultural tractor. This model,
With Gd2O3, Fe(NO3)3·9H2O, and nitric acid(1:1 volume fraction) as starting materials, nanocrystalline material of rare-earth composite oxide GdFeO3 with perov
The effects of Ce3+ on the chloroplast senescence of spinach under light were studied. The results show that when the chloroplasts are illuminated for 1, 5 and
A new hemA gene encoding 5-aminolevulinate (ALA) synthase was cloned from Agrobacterium radiobacter zju-0121. The ALA synthase catalyzes the pyridoxal phosphate
Seed vigor is an index of seed quality that is used to describe the rapid and uniform germination and the establish-ment of strong seedlings in any environmenta
Green Revolution made a substantial contribution to wheat yields worldwide in the 1960 s and 1970 s. It is of great importance to analyze the haplotype variatio