Situations and Countermeasures on Veterinary drug residues and Detection to Animal Material Food of Entry-Exit Trade

With the people's lives improving,the demands of livestock products on the import and export aspects were growing. Veterinary drug residues as the important factor which might influence animal products safety has become a major concern. In this paper,the status quo and inspection of the veterinary drug residue and the corresponding control measures were put forward.

Mixed Monolayers of Tween-80 and Oleic Acid at Air/Water Interface

Polyoxyethylene sorbitan monooleate(Tween-80) and oleic acid(OA) with different molar ratios were mixed and spread at air/water interface on subphases with varied pH values by using a Langmuir trough to investigate the laws governing the performance of the two components.The surface excess free energy(△G_M^(exc)) of mixed monolayers with various mixed molar ratios at different pH values under the surface pressure of 10 mN/m was analyzed,for the compatibility evaluation of mixtures in the monolayer.The results indicated that Tween-80 and OA could be miscible in thermodynamics under almost all the conditions in the experiments,except when the molar ratios of OA were more than 0.5 on the alkaline subphase at pH 9.5.The better thermodynamic compatibility between OA and Tween-80 occurred as the surface pressure was 10 mN/m,when the molar ratios of OA were 0.7 and 0.1 respectively in our experiments.

Construction of the All-region Linkage System for Emergency Management of Agricultural Product Quality and Safety in West China

Quality and safety of agricultural products are significant for national socioeconomic development,sustainable development,and vital interests of people.To safeguard quality and safety of agricultural products in west China is to safeguard economic safety and ecological safety of the country,public health and social stability,of which an important task is to properly handle emergencies concerning quality and safety of agricultural products.Considering actual conditions of west China,suggestions are given to construct the all-region linkage system for emergency management of agricultural product quality and safety in the local area,enhance the all-region linkage,and improve the linkage efficiency.

Research on Measures for TBT of Pork Export

With the deepening of economic globalization and increasingly fierce competition of trade liberalization in WTO member countries,the effect of traditional trade protection measures is gradually weakening or even removed. In recent years,Technical Barriers to Trade( TBT)as a category of nontariff barriers to trade,are the widely divergent measures that countries use to regulate markets,protect their consumers,or preserve their natural resources( among other objectives),but they also can be used( or perceived by foreign countries) to discriminate against imports in order to protect domestic industries. These directly or indirectly lead to gradual rise of trade friction of China's pork export. This paper analyzed background and significance of measures for TBT of pork export,current situations of researches on TBT both at home and abroad,and came up with new ideas and viewpoints for further strengthening measures for TBT of pork export.