链球菌是人畜的重要病原菌。猪链球菌病致病菌株多属兰氏(Lancefield)C、D、E、L 和 S 等群。常见病征有关节炎、心内膜炎、脑膜脑炎、颈部脓肿和败血症。六、七十年代,我国南方各省发现以急性败血症和脑脊髓膜脑炎为特征的猪链球菌病,...链球菌是人畜的重要病原菌。猪链球菌病致病菌株多属兰氏(Lancefield)C、D、E、L 和 S 等群。常见病征有关节炎、心内膜炎、脑膜脑炎、颈部脓肿和败血症。六、七十年代,我国南方各省发现以急性败血症和脑脊髓膜脑炎为特征的猪链球菌病,其病原菌属兰氏 C 群。Jones(1976)提到兰氏R链球菌可分离自猪的皮炎。Roxanna 等(1979)报道了与兰氏 R 群链球菌致病相关的猪肺炎。Parker(1977)描述了几内亚猪感染肺炎链球菌的肺外病变。展开更多
A presentation of hyperbolic unitary group is an important part in the unitary group. The group KG 2,n (R) plays an elementary role in presentation of unitary group. It is proved that KG 2,n(R)=1 for n≥2 over a...A presentation of hyperbolic unitary group is an important part in the unitary group. The group KG 2,n (R) plays an elementary role in presentation of unitary group. It is proved that KG 2,n(R)=1 for n≥2 over a ring R with division ring of quotients, using a new method, and a presentation of GE n(R) is given.展开更多
A presentation of hyperbolic unitary group is an important part in the unitary group. The group KG 2,n (R) plays an elementary role in presentation of unitary group. It is proved that KG 2,n(R)=1 for n≥2 over a...A presentation of hyperbolic unitary group is an important part in the unitary group. The group KG 2,n (R) plays an elementary role in presentation of unitary group. It is proved that KG 2,n(R)=1 for n≥2 over a ring R with division ring of quotients, using a new method, and a presentation of GE n(R) is given.展开更多
文摘链球菌是人畜的重要病原菌。猪链球菌病致病菌株多属兰氏(Lancefield)C、D、E、L 和 S 等群。常见病征有关节炎、心内膜炎、脑膜脑炎、颈部脓肿和败血症。六、七十年代,我国南方各省发现以急性败血症和脑脊髓膜脑炎为特征的猪链球菌病,其病原菌属兰氏 C 群。Jones(1976)提到兰氏R链球菌可分离自猪的皮炎。Roxanna 等(1979)报道了与兰氏 R 群链球菌致病相关的猪肺炎。Parker(1977)描述了几内亚猪感染肺炎链球菌的肺外病变。
文摘A presentation of hyperbolic unitary group is an important part in the unitary group. The group KG 2,n (R) plays an elementary role in presentation of unitary group. It is proved that KG 2,n(R)=1 for n≥2 over a ring R with division ring of quotients, using a new method, and a presentation of GE n(R) is given.
文摘A presentation of hyperbolic unitary group is an important part in the unitary group. The group KG 2,n (R) plays an elementary role in presentation of unitary group. It is proved that KG 2,n(R)=1 for n≥2 over a ring R with division ring of quotients, using a new method, and a presentation of GE n(R) is given.
