Notice of Retraction Impact of the Positive list system on vegetable trade between China and Japan
This article estimates influence of the Positive list system on the Sino-Japanese vegetables trade amount through establishing simultaneous equation model and choosing three-stage least squares method. The results indicated that the Positive list system implemented by Japan has a remarkable negative effect on chinese vegetables export to Japan, but the influence only has a short-term effect and the long-term influence is not remarkable.
Comparative Study on Grain Subsidy Policy both at Home and Aboard and Its Enlightenment
Through the analysis of the United States,EU and Japan,the comparison with China was made from four aspects: subsidy goals,inputs,mechanisms and trends.So good experiences could be found to provide the reference for the reform and adjustment of grain subsidy policy in China in the early 21st century.
Simultaneous Determination of Organonitrogen and Carbamate Pesticides in Foods by an Internal Standard Method Based on Retention Indices in Dual-Column Gas Chromatography
A method for accurate and simple determination of 28 kinds of organonitrogen and 7 kinds of carbamate pesticides in foods was developed. The pesticides in foods were extracted using a method for rapid simultaneous determination of pesticide residues recommended by the Ministry of Health and Welfare. The pesticides co-injected with retention index standards (M-Series) were determined with a dual-column gas chromatograph equipped with ATD. The identification was based on retention indices and the quantitation was done by a multi-internal standard method. This technique provides superior reproducibility of identification and accuracy of quantitation.