Recently, the Chinese Technology has issued more within the national key Ministry of Science and than 40 key special projects research and development program. In the 2017 Annual Project Application Guidelines, a tota...Recently, the Chinese Technology has issued more within the national key Ministry of Science and than 40 key special projects research and development program. In the 2017 Annual Project Application Guidelines, a total of seven key projects related to geological sciences are planned, with overall funding of 3.52 billion yuan, with the timespan generally of five years. They are introduced as follows：展开更多
Currently, ＂ Porous SiC Multi-phase Ceramics with Hierarchical Heterogeneities for Filtrating High Temperature Soot＂ , a project of Sinosteel LIRR, gained International S＆T Cooperation Special Funds from Ministry o...Currently, ＂ Porous SiC Multi-phase Ceramics with Hierarchical Heterogeneities for Filtrating High Temperature Soot＂ , a project of Sinosteel LIRR, gained International S＆T Cooperation Special Funds from Ministry of Science and Technology of China.展开更多
For any group G, denote byπe(G) the set of orders of elements in G. Given a finite group G, let h(πe (G)) be the number of isomorphism classes of finite groups with the same set πe(G) of element orders. A group G i...For any group G, denote byπe(G) the set of orders of elements in G. Given a finite group G, let h(πe (G)) be the number of isomorphism classes of finite groups with the same set πe(G) of element orders. A group G is called k-recognizable if h(πe(G)) = k <∞, otherwise G is called non-recognizable. Also a 1-recognizable group is called a recognizable (or characterizable) group. In this paper the authors show that the simple groups PSL(3,q), where 3 < q≡±2 (mod 5) and (6, (q-1)/2) = 1, are recognizable.展开更多
On July II, 2013, a project ofAnhui Shengshi New- energy Materials and Technology Co., Ltd. was put into production with an annual capacity of 40 thousand tons quartz glass, which was the largest quartz glass producti...On July II, 2013, a project ofAnhui Shengshi New- energy Materials and Technology Co., Ltd. was put into production with an annual capacity of 40 thousand tons quartz glass, which was the largest quartz glass production line in the world. The total investment of theproject was CNY 110 million. The new process can save energy over 30% than the traditional one. The project with an annual sales income of CNY 165 million can change the short supply of architectural crystal glass and high-grade ware glass in China＇s market.展开更多
Let P be a finite group and denote by w（P） the set of its element orders. P is called k-recognizable by the set of its element orders if for any finte group G with ω（G） =ω（P） there are, up to isomorphism, k fi...Let P be a finite group and denote by w（P） the set of its element orders. P is called k-recognizable by the set of its element orders if for any finte group G with ω（G） =ω（P） there are, up to isomorphism, k finite groups G such that G ≌P. In this paper we will prove that the group Lp（3）, where p 〉 3 is a prime number, is at most 2-recognizable.展开更多
We determine the sizes of orbits from the action of subgroups of PSL(2,q) on projective line X = GF(q) ∪ {∞} with q a prime power and congruent to 1 modulo 4.As an example of its application,we construct some new fa...We determine the sizes of orbits from the action of subgroups of PSL(2,q) on projective line X = GF(q) ∪ {∞} with q a prime power and congruent to 1 modulo 4.As an example of its application,we construct some new families of simple 3-designs admitting PSL(2,q) as automorphism group.展开更多
文摘Recently, the Chinese Technology has issued more within the national key Ministry of Science and than 40 key special projects research and development program. In the 2017 Annual Project Application Guidelines, a total of seven key projects related to geological sciences are planned, with overall funding of 3.52 billion yuan, with the timespan generally of five years. They are introduced as follows：
文摘Currently, ＂ Porous SiC Multi-phase Ceramics with Hierarchical Heterogeneities for Filtrating High Temperature Soot＂ , a project of Sinosteel LIRR, gained International S＆T Cooperation Special Funds from Ministry of Science and Technology of China.
基金This work has been supported by the Research Institute for Fundamental Sciences Tabriz,Iran.
文摘For any group G, denote byπe(G) the set of orders of elements in G. Given a finite group G, let h(πe (G)) be the number of isomorphism classes of finite groups with the same set πe(G) of element orders. A group G is called k-recognizable if h(πe(G)) = k <∞, otherwise G is called non-recognizable. Also a 1-recognizable group is called a recognizable (or characterizable) group. In this paper the authors show that the simple groups PSL(3,q), where 3 < q≡±2 (mod 5) and (6, (q-1)/2) = 1, are recognizable.
文摘On July II, 2013, a project ofAnhui Shengshi New- energy Materials and Technology Co., Ltd. was put into production with an annual capacity of 40 thousand tons quartz glass, which was the largest quartz glass production line in the world. The total investment of theproject was CNY 110 million. The new process can save energy over 30% than the traditional one. The project with an annual sales income of CNY 165 million can change the short supply of architectural crystal glass and high-grade ware glass in China＇s market.
基金Supported by the research council of College of Science, the University of Tehran (Grant No. 6103014-1-03)
文摘Let P be a finite group and denote by w（P） the set of its element orders. P is called k-recognizable by the set of its element orders if for any finte group G with ω（G） =ω（P） there are, up to isomorphism, k finite groups G such that G ≌P. In this paper we will prove that the group Lp（3）, where p 〉 3 is a prime number, is at most 2-recognizable.
基金supported by National Natural Science Foundation of China (Grant Nos.10871205 and 10971252)the Research Foundation of Education Bureau of Hunan Province of China (Grant No. 08c021)
文摘We determine the sizes of orbits from the action of subgroups of PSL(2,q) on projective line X = GF(q) ∪ {∞} with q a prime power and congruent to 1 modulo 4.As an example of its application,we construct some new families of simple 3-designs admitting PSL(2,q) as automorphism group.
