A novel compound, (HGly) 4[HPMo 12 O 40 ] 2·22H 2O, was synthesized and characterized by means of elemental analysis, IR and X ray diffraction. The compound crystallized in a monoclinic space group ...A novel compound, (HGly) 4[HPMo 12 O 40 ] 2·22H 2O, was synthesized and characterized by means of elemental analysis, IR and X ray diffraction. The compound crystallized in a monoclinic space group Cc with a =4 0060(0 8) nm, b =1 2527(0 3) nm, c =1 9930(0 4) nm, β =96 36(3)°, V =9 940(3) nm 3, Z =2, R 1=0 0576, wR 2 =0 1746. The anti tumor activity of this compound was tested in two human tumor cell lines in vitro .展开更多
The generation of low frequency waves by a single or double wave groups incident upon two Plane beaches with the slope of 1/40 and 1/100 is investigated experimentally and numerically. A new type of wave maker signal ...The generation of low frequency waves by a single or double wave groups incident upon two Plane beaches with the slope of 1/40 and 1/100 is investigated experimentally and numerically. A new type of wave maker signal is used to generate the groups, allowing the bound long wave (set-down) to be included in the group. The experiments show that the low frequency wave is generated during breaking and propagation to the shoreline of the wave group. This process of generation and propagation of low frequency waves is simulated numerically by solving the short-wave averaged mass and momentum conservation equations. The computed and measured results are in good agreement. The mechanism of generation of low frequency waves in the surf zone is examined and discussed.展开更多
the U.S.is directly impacting on the future of the East Asian community.Therefore,finding ways to get along with the U.S.is crucial to the speed,direction,configuration and character of the East Asian community.In thi...the U.S.is directly impacting on the future of the East Asian community.Therefore,finding ways to get along with the U.S.is crucial to the speed,direction,configuration and character of the East Asian community.In this paper,the author has analyzed the interests of the United States in East Asia and its stands towards the East Asian integration.The author concludes that it is to the interest of the United States to make more efforts to further join in the East Asian integration. And East Asia should accept and welcome the American participation.展开更多
An easy preparation of controlled alumina nanoparticles by the solution precipitate method has been carried out using dendrimer as surfactant. The effects of the amount and size of surfactant on morphological control...An easy preparation of controlled alumina nanoparticles by the solution precipitate method has been carried out using dendrimer as surfactant. The effects of the amount and size of surfactant on morphological control of powder have also been discussed.展开更多
Pyrene probe and TEM have been employed to investigate the behavior of a polystyrene-b-poly(acrylic acid) (PS-b-PAA) copolymer in aqueous solution. A significant annealing temperature effect on the I1/I3 ratio of pyr...Pyrene probe and TEM have been employed to investigate the behavior of a polystyrene-b-poly(acrylic acid) (PS-b-PAA) copolymer in aqueous solution. A significant annealing temperature effect on the I1/I3 ratio of pyrene was observed and was interpreted in terms of the morphological change of micellar cores. Annealing at a temperature higher than the glass transition temperature (Tg) of PS leads to densification of the hydrophobic core.展开更多
基金Supported by National Natural Science Foundation of China(No.2 0 1710 10 ) .
文摘A novel compound, (HGly) 4[HPMo 12 O 40 ] 2·22H 2O, was synthesized and characterized by means of elemental analysis, IR and X ray diffraction. The compound crystallized in a monoclinic space group Cc with a =4 0060(0 8) nm, b =1 2527(0 3) nm, c =1 9930(0 4) nm, β =96 36(3)°, V =9 940(3) nm 3, Z =2, R 1=0 0576, wR 2 =0 1746. The anti tumor activity of this compound was tested in two human tumor cell lines in vitro .
基金This project was financially supported by the National Natural Science Foundations of China(Grant No.5967900559839330)
文摘The generation of low frequency waves by a single or double wave groups incident upon two Plane beaches with the slope of 1/40 and 1/100 is investigated experimentally and numerically. A new type of wave maker signal is used to generate the groups, allowing the bound long wave (set-down) to be included in the group. The experiments show that the low frequency wave is generated during breaking and propagation to the shoreline of the wave group. This process of generation and propagation of low frequency waves is simulated numerically by solving the short-wave averaged mass and momentum conservation equations. The computed and measured results are in good agreement. The mechanism of generation of low frequency waves in the surf zone is examined and discussed.
文摘the U.S.is directly impacting on the future of the East Asian community.Therefore,finding ways to get along with the U.S.is crucial to the speed,direction,configuration and character of the East Asian community.In this paper,the author has analyzed the interests of the United States in East Asia and its stands towards the East Asian integration.The author concludes that it is to the interest of the United States to make more efforts to further join in the East Asian integration. And East Asia should accept and welcome the American participation.
基金This work was partially supported by a Grant in Aid (for returned student) for Science Research from the Ministry of Education of China ( 2000 ) and by the Research Fund for the Doctoral Program of Higher Education of China (No. 20010141004).
文摘An easy preparation of controlled alumina nanoparticles by the solution precipitate method has been carried out using dendrimer as surfactant. The effects of the amount and size of surfactant on morphological control of powder have also been discussed.
基金the National Natural Science Foundation of China (Grant No.29574165 29928003+1 种基金 29874019) Key Science and the Natural Science Foundation of Tianjin (013604011).
文摘Pyrene probe and TEM have been employed to investigate the behavior of a polystyrene-b-poly(acrylic acid) (PS-b-PAA) copolymer in aqueous solution. A significant annealing temperature effect on the I1/I3 ratio of pyrene was observed and was interpreted in terms of the morphological change of micellar cores. Annealing at a temperature higher than the glass transition temperature (Tg) of PS leads to densification of the hydrophobic core.
基金supported by the National Natural Science Foundation of China (No. 30123005) and Bicoll Biotechnology Shanghai Co Ltd. Authors thank Professor Qiong Xin ZHONG (Department of Biological Science Hainan Normal University) for collecting Stemona parviflora
