Laiwu,a developingindustrial city in the middle eastof Shandong Province,is situatedat the eastern foot of Mount Taiand is known for its steel andcoal production.Covering an areaof 2,239 square kilometres,ithas two di...Laiwu,a developingindustrial city in the middle eastof Shandong Province,is situatedat the eastern foot of Mount Taiand is known for its steel andcoal production.Covering an areaof 2,239 square kilometres,ithas two districts, Laicheng andGangcheng, and 30 towns underits jurisdiction with a populationtotalling 1.2 million.展开更多
The Laiwu City Foreign TradeCorporation now has a total staff of1,320 and fixed assets of RMB36million.Under the Corporation,there are 15managerial units,one import and exportcorporation,eight foreign trade specialize...The Laiwu City Foreign TradeCorporation now has a total staff of1,320 and fixed assets of RMB36million.Under the Corporation,there are 15managerial units,one import and exportcorporation,eight foreign trade specializedcorporations(cereals and oils,foodstuffs,native products,animal by-products,artsand crafts,drawnwork,light and展开更多
In order to explain the mechanism of high meat quality in Laiwu pigs and investigate the relation between myosin heavy chains (MyHC) composition and meat quality, meat quality analysis was conducted and mRNA expressio...In order to explain the mechanism of high meat quality in Laiwu pigs and investigate the relation between myosin heavy chains (MyHC) composition and meat quality, meat quality analysis was conducted and mRNA expression of MyHC I, IIa, IIx, IIb was quantified by real-time fluorescence PCR in longissimus muscle (LM) and semimembranous muscle of Laiwu pigs and Duroc. The result indicated that, compared with Duroc, mRNA expression of MyHC IIa, IIx in LM and semimembranous muscle of Laiwu pigs was significantly increased, mRNA expression of MyHC IIb was dramatically decreased. However, the expression of MyHC I was not significantly affected by breeds. The correlation between mRNA expression of MyHC I, IIa, IIx in LM and meat color, pH value, marbling, intramuscular fat content was positive, but shear value of LM was negative. The relation between MyHC IIb mRNA expression and marbling, intramuscular fat content was dramatically negative, whereas shear value was strikingly positive, as well as fiber diameter, but without reaching statistical significance. Therefore, the composition of MyHC I, IIa, IIx, IIb affected meat quality, furthermore, expression of MyHC I, IIa, IIx, IIb mRNA prominently influenced meat characteristics, especially edible quality of muscle, suggesting that mRNA expression level of MyHC I, IIa, IIx, IIb can exactly and impersonally estimate meat quality.展开更多
1研究目的钴是高温合金、电池材料、防腐材料、磁性材料等重要原料,广泛应用于航空航天、电子电器、机械制造、汽车、化工农业、陶瓷等领域,在国民经济和社会发展中具有特殊的意义。特别是从移动电子设备,到新能源汽车的动力电池,再到...1研究目的钴是高温合金、电池材料、防腐材料、磁性材料等重要原料,广泛应用于航空航天、电子电器、机械制造、汽车、化工农业、陶瓷等领域,在国民经济和社会发展中具有特殊的意义。特别是从移动电子设备,到新能源汽车的动力电池,再到电网储能,钴作为锂电池正极材料——钴酸锂的重要组成,都是不可或缺。因此,钴被世界上众多国家列为21世纪重要的关键战略资源(Gulley et al.,2018)。现今我国是世界上最大的钴资源进口国(95%依靠进口)和消费国(US Geological Survey,2018),而且钴资源紧缺,保障程度低(蒋少涌等,2019;许德如等,2019)。展开更多
文摘Laiwu,a developingindustrial city in the middle eastof Shandong Province,is situatedat the eastern foot of Mount Taiand is known for its steel andcoal production.Covering an areaof 2,239 square kilometres,ithas two districts, Laicheng andGangcheng, and 30 towns underits jurisdiction with a populationtotalling 1.2 million.
文摘The Laiwu City Foreign TradeCorporation now has a total staff of1,320 and fixed assets of RMB36million.Under the Corporation,there are 15managerial units,one import and exportcorporation,eight foreign trade specializedcorporations(cereals and oils,foodstuffs,native products,animal by-products,artsand crafts,drawnwork,light and
基金Shandong agricultural breeding project(Grant No. 2006LZ08)Shandong Academy Agricultural Sciences fund for young scholars (Grant No. 2005YQ041)
文摘In order to explain the mechanism of high meat quality in Laiwu pigs and investigate the relation between myosin heavy chains (MyHC) composition and meat quality, meat quality analysis was conducted and mRNA expression of MyHC I, IIa, IIx, IIb was quantified by real-time fluorescence PCR in longissimus muscle (LM) and semimembranous muscle of Laiwu pigs and Duroc. The result indicated that, compared with Duroc, mRNA expression of MyHC IIa, IIx in LM and semimembranous muscle of Laiwu pigs was significantly increased, mRNA expression of MyHC IIb was dramatically decreased. However, the expression of MyHC I was not significantly affected by breeds. The correlation between mRNA expression of MyHC I, IIa, IIx in LM and meat color, pH value, marbling, intramuscular fat content was positive, but shear value of LM was negative. The relation between MyHC IIb mRNA expression and marbling, intramuscular fat content was dramatically negative, whereas shear value was strikingly positive, as well as fiber diameter, but without reaching statistical significance. Therefore, the composition of MyHC I, IIa, IIx, IIb affected meat quality, furthermore, expression of MyHC I, IIa, IIx, IIb mRNA prominently influenced meat characteristics, especially edible quality of muscle, suggesting that mRNA expression level of MyHC I, IIa, IIx, IIb can exactly and impersonally estimate meat quality.
文摘1研究目的钴是高温合金、电池材料、防腐材料、磁性材料等重要原料,广泛应用于航空航天、电子电器、机械制造、汽车、化工农业、陶瓷等领域,在国民经济和社会发展中具有特殊的意义。特别是从移动电子设备,到新能源汽车的动力电池,再到电网储能,钴作为锂电池正极材料——钴酸锂的重要组成,都是不可或缺。因此,钴被世界上众多国家列为21世纪重要的关键战略资源(Gulley et al.,2018)。现今我国是世界上最大的钴资源进口国(95%依靠进口)和消费国(US Geological Survey,2018),而且钴资源紧缺,保障程度低(蒋少涌等,2019;许德如等,2019)。
