http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
The synthesis of humic acids graft copolymer and its adsorption for organic pesticides
Chengjian Yang,Qingru Zeng,Yang Yang,Ruiyang Xiao,Yunzhong Wang,Hui Shi 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
humic acid graft copolymer (PSt-g-HA) was prepared by graft copolymerization of Humic acid (HA) withstyrene and the sorption of three selected organic pesticides, parathion-methyl, carbaryl and carbofuranby PSt-g-HA acid and untreated humic were also examined, respectively. The PSt-g-HA had relativelyhigh aromatic carbons content because the grafted copolymerization of polystyrene entered intocondensed domains in HA, whereas the removal of the polar function groups, such as carboxyl andphenolic hydroxyl group, was performed. For above reasons, the sorption capacity of three organicpesticides (parathion-methyl, carbaryl and carbofuran) on PSt-g-HA increased by 64.1% to 95.2%.
Zhao Linjie,Yang Mao,Xiao Chengjian,Gong Yu,Ran Guangming,Chen Xiaojun,Li Jiamao,Yue Lei,Chen Chao,Hou Jingwei,Wang Heyi,Long Xinggui,Peng Shuming 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.1
Understanding the tritium release and retention behavior of candidate tritium breeder materials is crucial for breeder blanket design. Recently, a melt spraying process was developed to prepare Li4SiO4 pebbles, which were subsequently subjected to the in-pile tritium production and extraction platform in China Mianyang Research Reactor (CMRR) to investigate their in-situ tritium release behavior and irradiation performance. The results demonstrate that HT is the main tritium release form, and adding hydrogen to the purge gas reduces tritium retention while increasing the HT percent in the purge gas. Post-irradiation experiments reveal that the irradiated pebbles darken in color and their grains swell, but the mechanical properties remain largely unchanged. It is concluded that the tritium residence time of Li4SiO4 made by melt spraying method at 467 ◦C is approximately 23.34 h. High-density Li4SiO4 pebbles exhibit tritium release at relatively low temperatures (<600 ◦C) that is mainly controlled by bulk diffusion. The diffusion coefficient at 525 ◦C and 550 ◦C is 1.19 × 10 11 cm2/s and 5.34 × 10 11 cm2/s, respectively, with corresponding tritium residence times of 21.3 hours and 4.7 hours.
Proteolytic effect of starter culture during ripening of smoked horse sausage
Lu Shiling,Han Xianna,Yang yanbin,Li Baokun,Xu Chengjian,Wang Qingling 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.5
In this study, we assessed the effect of bacterial and endogenous enzymes on the proteolysis of smoked horse sausage. Commercial starter culture (Staphylococcus xylosus + Lactobacillus sakei) was used in smoked horse sausage. Cathepsin B + L and cathepsin B activities, microbiological growth, pH, and water activity (aw) were measured. Based on PCR-DGGE fingerprint analyses, the starter culture inhibited endogenous bacterial growth. During ripening, the residual activity of cathepsin B + L and cathepsin B was higher in batch C (control) than in batch S (containing starter cultures). The starter and endogenous enzymes promote the degradation of sarcoplasmic and myofibrillar proteins; however, the degradation of these proteins was higher in batch S than in batch C. Therefore, bacterial enzymes played a major role in the degradation of proteins during the ripening of smoked horse sausage.