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Based on the certain irrigation requirement, the precise basin irrigation experiment was conducted on spring wheat in the Huangyang Irrigation Area of Gansu Province. A series of factors which influence irrigation benefits were dealt with including irrigation performance, water saving benefit and crop yields, etc. It shows by studied results that precise basin irrigation technique could achieve desirable...
The Tian Shan of Central Asia is located in the southwestern part of the Central Asian Orogenic Belt (CAOB, also known as the Central Asian Orogenic System or CAOS). Formation of the South Tian Shan Orogen is a diachronous, scissors-like process during the Paleozoic and its western segment in China–Kyrgyzstan contiguous regions is accepted as the site of the final collision zone between the Tarim...
Oxidative cleavage of aryl oxazoline 2 using methyl(trifluoromethyl)dioxirane 1a generated in situ provides the intermediate nitro-ester 8, which undergoes a basic hydrolysis to furnish benzoic acid 11. Even the hindered oxazoline 7 can be cleaved smoothly to afford 3,3 -dimethyl-2,2 -diphenic acid 16. All substituted benzoic acids 11-16 can be isolated in excellent yields (80-95%).
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