At the invitation of the.Asian Center of the Philip-pine University,a five-mem-berCAFIU delegation visited the Philippines.The host high-ly regarded our visit,gave us a W arm and courteous recep-tion.Mr.Estrada.
This paper has investigated the ratios of closely related elements such as Mn,Cr,V,Ni,Co,Cu,Pb,Cd,Ba,Sr,La and Ce in the major soils of China,and the factors affecting them,and explored their use as indicators in soil...This paper has investigated the ratios of closely related elements such as Mn,Cr,V,Ni,Co,Cu,Pb,Cd,Ba,Sr,La and Ce in the major soils of China,and the factors affecting them,and explored their use as indicators in soil formation,material transport and environmental pollution.Results show that the effect of soil-forming processes on the ratios of closely related elements varied with different elements,and became greater in the sequence of Ce/La <V/Cr≈Ni/Co<Zn/Cu≈Zn/Pb<Zn/Cd<Mn/Cr<Ba/Sr.The magnitude of the variation in the ratios of closely related elements depended on the chemical properties of the elements themselves,on the one hand,and the parent material and climatic conditions on the other.The ratio of Ba/Sr showed a distinct zonality,decreasing gradually in the sequence:cool temperate zone acid soils>grassland soils>desert soils and increasing gradually from the semi-arid subhumid zone soils>the temperate zone neutral soils>the north subtropic zone soils>tropical and subtropical acid soils.展开更多
SSR molecular markers were used to analyze the genetic diversity of 8 Jinsha pomelo germplasm and its closely-related varieties from main planting area in Jiangxi Province. A total of 92 alleles were detected from 26 ...SSR molecular markers were used to analyze the genetic diversity of 8 Jinsha pomelo germplasm and its closely-related varieties from main planting area in Jiangxi Province. A total of 92 alleles were detected from 26 pairs of selected primers with 53. 68% of polymorphism. The alleles detected per locus were ranged from 2 to 8. On average,3. 54 alleles were amplified from per pair of primers. The similarity coefficients of the 8 varieties were in the range of 0. 729-0. 924.According to the genetic similarities based on UPGMA method,all materials were divided into two groups of Jinlan pomelo and Shatian pomelo at the similarity coefficient of 0. 738.展开更多
This study aims, first, to examine the limit for tolerance to lower salinity by an oceanic sea skater, Halobates micans, and , second, to make it clear whether exclusively fresh water Halobatinae species, Metrocoris h...This study aims, first, to examine the limit for tolerance to lower salinity by an oceanic sea skater, Halobates micans, and , second, to make it clear whether exclusively fresh water Halobatinae species, Metrocoris histrio has salinity tolerance. Adults of H. micans were collected using Neuston Net from the starboard side of R/V MIRAI on a fixed station at 8°S, 80°E, whereas those of M. histrio were collected from a small pond filled with a spring fresh water in Kochi (33°N, 133°E), Japan. Time in survival was measured in starved condition under several salinity conditions: 0‰, 2‰, 4‰, 6‰, 8‰, 9‰ and 10‰ for H. micans;0‰, 5‰, 10‰, 12.5‰, 15‰ for M. histrio. Half of adults were in coma due to lower salinity under 10‰ and time in survival was less than 10 hours under less than 4‰ for H. micans. Time in survival was half at 5‰ of 80 hours on average at 0‰ as a control and less than 10 hours at 10‰ or higher salinity for M. histrio. Relatively flexible osmo-regulation ability by H. micans would be related to wide variety of salinity condition of surface oceanic water, whereas very limited tolerance even to lower salinity of 5‰ may be permitted by the no chances to be exposed to brackish water in natural habitats of M. histrio. This study showed that salinity tolerance of Halobatinae species would reflect, directly, the salinity condition of their habitats.展开更多
In our previous work [Phys. Rev. A 85 （2012） 044102], we studied the Berry phase of the ground state and exited states in the Lipkin model. In this work, using the Hellmann-Feynman theorem, we derive the relation be...In our previous work [Phys. Rev. A 85 （2012） 044102], we studied the Berry phase of the ground state and exited states in the Lipkin model. In this work, using the Hellmann-Feynman theorem, we derive the relation between the energy gap and the Berry phase closed to the excited state quantum phase transition （ESQPT） in the Lipkin model. It is found that the energy gap is approximately linearly dependent on the Berry phase being closed to the ESQPT for large N. As a result, the critical behavior of the energy gap is similar to that of the Berry phase. In addition, we also perform a semiclassical qualitative analysis about the critical behavior of the energy gap.展开更多
设H_(1),H_(2),H_(3)为无穷维复可分Hilbert空间,对给定关系A∈B CR(H_(1)),B∈B CR(H_(2)),C∈B CR(H_(3)),记M_(D,E,F):={A D E O B F O O C},其中D∈BR(H_(2),H_(1)),E∈B(H_(3),H_(1)),F∈BR(H_(3),H_(2))。得到了对任意D∈B(H_(2),...设H_(1),H_(2),H_(3)为无穷维复可分Hilbert空间,对给定关系A∈B CR(H_(1)),B∈B CR(H_(2)),C∈B CR(H_(3)),记M_(D,E,F):={A D E O B F O O C},其中D∈BR(H_(2),H_(1)),E∈B(H_(3),H_(1)),F∈BR(H_(3),H_(2))。得到了对任意D∈B(H_(2),H_(1)),E∈B(H_(3),H_(1)),F∈B(H_(3),H_(2))和D∈BR(H_(2),H_(1)),E∈B(H_(3),H_(1)),F∈B(H_(3),H_(2)),关系矩阵M_(D,E,F)都有闭值域的充分必要条件,并进一步刻画了两类3×3上三角关系矩阵的可能闭值域谱。展开更多
This paper concentrates on the problem of data redundancy under the extended-possibility-based model. Based on the information gain in data classification, a measure - relation redundancy - is proposed to evaluate the...This paper concentrates on the problem of data redundancy under the extended-possibility-based model. Based on the information gain in data classification, a measure - relation redundancy - is proposed to evaluate the degree of a given relation being redundant in whole. The properties of relation redundancy are also investigated. This new measure is useful in dealing with data redundancy.展开更多
We obtain two generalizations of a known theorem of A. Alam and M. Imdad (J. Fixed Point Theory Appl. 17 (2015) 693-702) showing that some standard proofs can be obtained involving only Cauchy sequences of the success...We obtain two generalizations of a known theorem of A. Alam and M. Imdad (J. Fixed Point Theory Appl. 17 (2015) 693-702) showing that some standard proofs can be obtained involving only Cauchy sequences of the successive approximations. Suitable examples prove the effective generalization of our results in metric spaces not necessarily complete.展开更多
文摘At the invitation of the.Asian Center of the Philip-pine University,a five-mem-berCAFIU delegation visited the Philippines.The host high-ly regarded our visit,gave us a W arm and courteous recep-tion.Mr.Estrada.
文摘This paper has investigated the ratios of closely related elements such as Mn,Cr,V,Ni,Co,Cu,Pb,Cd,Ba,Sr,La and Ce in the major soils of China,and the factors affecting them,and explored their use as indicators in soil formation,material transport and environmental pollution.Results show that the effect of soil-forming processes on the ratios of closely related elements varied with different elements,and became greater in the sequence of Ce/La <V/Cr≈Ni/Co<Zn/Cu≈Zn/Pb<Zn/Cd<Mn/Cr<Ba/Sr.The magnitude of the variation in the ratios of closely related elements depended on the chemical properties of the elements themselves,on the one hand,and the parent material and climatic conditions on the other.The ratio of Ba/Sr showed a distinct zonality,decreasing gradually in the sequence:cool temperate zone acid soils>grassland soils>desert soils and increasing gradually from the semi-arid subhumid zone soils>the temperate zone neutral soils>the north subtropic zone soils>tropical and subtropical acid soils.
基金Supported by Natural Science Foundation of China(31501718,31460508)Scientific Research of Doctor Start-up Fund Project of Jiangxi Academy of Agricultural Sciences(20142CBS008)+3 种基金Jiangxi Province Foreign Science and Technology Cooperation Project(20141BDH80005)National International Scientific and Technological Cooperation Program(2015DFA31060)Innovation Fund of Jiangxi Academy of Agricultural sciences(2013CJJ009,2016CJJ002)Guangxi Innovation Team Nanning Test Station Project of Citrus Industry National Modern Agriculture Technology System(nycytxgxcxtd-05-08)
文摘SSR molecular markers were used to analyze the genetic diversity of 8 Jinsha pomelo germplasm and its closely-related varieties from main planting area in Jiangxi Province. A total of 92 alleles were detected from 26 pairs of selected primers with 53. 68% of polymorphism. The alleles detected per locus were ranged from 2 to 8. On average,3. 54 alleles were amplified from per pair of primers. The similarity coefficients of the 8 varieties were in the range of 0. 729-0. 924.According to the genetic similarities based on UPGMA method,all materials were divided into two groups of Jinlan pomelo and Shatian pomelo at the similarity coefficient of 0. 738.
文摘This study aims, first, to examine the limit for tolerance to lower salinity by an oceanic sea skater, Halobates micans, and , second, to make it clear whether exclusively fresh water Halobatinae species, Metrocoris histrio has salinity tolerance. Adults of H. micans were collected using Neuston Net from the starboard side of R/V MIRAI on a fixed station at 8°S, 80°E, whereas those of M. histrio were collected from a small pond filled with a spring fresh water in Kochi (33°N, 133°E), Japan. Time in survival was measured in starved condition under several salinity conditions: 0‰, 2‰, 4‰, 6‰, 8‰, 9‰ and 10‰ for H. micans;0‰, 5‰, 10‰, 12.5‰, 15‰ for M. histrio. Half of adults were in coma due to lower salinity under 10‰ and time in survival was less than 10 hours under less than 4‰ for H. micans. Time in survival was half at 5‰ of 80 hours on average at 0‰ as a control and less than 10 hours at 10‰ or higher salinity for M. histrio. Relatively flexible osmo-regulation ability by H. micans would be related to wide variety of salinity condition of surface oceanic water, whereas very limited tolerance even to lower salinity of 5‰ may be permitted by the no chances to be exposed to brackish water in natural habitats of M. histrio. This study showed that salinity tolerance of Halobatinae species would reflect, directly, the salinity condition of their habitats.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11204012 and 91321103
文摘In our previous work [Phys. Rev. A 85 （2012） 044102], we studied the Berry phase of the ground state and exited states in the Lipkin model. In this work, using the Hellmann-Feynman theorem, we derive the relation between the energy gap and the Berry phase closed to the excited state quantum phase transition （ESQPT） in the Lipkin model. It is found that the energy gap is approximately linearly dependent on the Berry phase being closed to the ESQPT for large N. As a result, the critical behavior of the energy gap is similar to that of the Berry phase. In addition, we also perform a semiclassical qualitative analysis about the critical behavior of the energy gap.
文摘设H_(1),H_(2),H_(3)为无穷维复可分Hilbert空间,对给定关系A∈B CR(H_(1)),B∈B CR(H_(2)),C∈B CR(H_(3)),记M_(D,E,F):={A D E O B F O O C},其中D∈BR(H_(2),H_(1)),E∈B(H_(3),H_(1)),F∈BR(H_(3),H_(2))。得到了对任意D∈B(H_(2),H_(1)),E∈B(H_(3),H_(1)),F∈B(H_(3),H_(2))和D∈BR(H_(2),H_(1)),E∈B(H_(3),H_(1)),F∈B(H_(3),H_(2)),关系矩阵M_(D,E,F)都有闭值域的充分必要条件,并进一步刻画了两类3×3上三角关系矩阵的可能闭值域谱。
基金Supported by the National Natural Science Foundation of China(No.70231010/70321001)the Bilateral Scientific and Technological Cooperation between China and Flanders (No.174B0201)
文摘This paper concentrates on the problem of data redundancy under the extended-possibility-based model. Based on the information gain in data classification, a measure - relation redundancy - is proposed to evaluate the degree of a given relation being redundant in whole. The properties of relation redundancy are also investigated. This new measure is useful in dealing with data redundancy.
文摘We obtain two generalizations of a known theorem of A. Alam and M. Imdad (J. Fixed Point Theory Appl. 17 (2015) 693-702) showing that some standard proofs can be obtained involving only Cauchy sequences of the successive approximations. Suitable examples prove the effective generalization of our results in metric spaces not necessarily complete.
