Comprehending regional characteristics and influencing factors of China＇s inbound tourism economy is im- portant to make effective policies that will help inbound tourism develop harmoniously and shrink regional disp...Comprehending regional characteristics and influencing factors of China＇s inbound tourism economy is im- portant to make effective policies that will help inbound tourism develop harmoniously and shrink regional disparity. This paper studied the regional disparity and convergence of China＇s inbound tourism economy during 1996-2008 with the methods of a-convergence, club convergence and r-convergence. The results indicate that 1） inbound tourism receipts per capita （ITRPC） of the whole country, the eastern, central and western regions presented the rapid increasing trend; 2） ITRPC of the whole country was characterized by convergence; 3） the eastern region presented club con- vergence, but the central and western regions did not show this trend; 4） the star-hotel levels and investment in fixed assets for the tourism industry per capita had a same trend to growth rates of ITRPC, promoting inbound tourism de- velopment, and there was no difference among the 31 provinces （municipalities） in the mainland of China; 5） but the proportion of employed persons in the tourism industry accounting for total population and the proportion of the terti- ary industry accounting for GDP had a reversal trend to growth rates of ITRPC, shrinking the provincial disparity in inbound tourism economy, and there were differences between the developed provinces and the developing provinces. Based on these analyses, we put forward some suggestions for the developing provinces to speed up inbound tourism economy.展开更多
The novel three-dimension edta-linked （edta--ethylenediamine-N,N,N＇,N＇-tetraacetate） heterometallic complex [Sba（edta）2-μ4-Co（H20）2]·5.15H2O has been synthesized and characterized by elemental analyses, ...The novel three-dimension edta-linked （edta--ethylenediamine-N,N,N＇,N＇-tetraacetate） heterometallic complex [Sba（edta）2-μ4-Co（H20）2]·5.15H2O has been synthesized and characterized by elemental analyses, FT-IR spectrum, X-ray diffraction analyses and thermogravimetry-differential scanning calorimetry （TG-DSC）. The complex crys- tallizes in the monoclinic system, space group P21/n, lattice parameters： a=0.69969（2） nm, b=2.08705（4） nm, c-- 1.08106（2） nm, β=90.031（1）°, V=1.57866（6） nm3, Z=2, Mr=1007.76, Dc=2.120 g-cm 3 F（000）=1001,μ= 2.323 mm t, the final R=0.0235 and wR--0.0629 for 3480 observed reflections [l〉2σ（l）]. In the structure each Co（II） ion is connected with Sb（III） ions bridging by four carboxylic oxygen atoms, and in each [Sb（edta）] anion, the Sb（III） ion is six coordinated by two nitrogen and four oxygen from edta ions, together with a lone electron pair at the equatorial position. In the complex, the coordination number of Co（II） ion is six and its coordination environment is composed of four carboxylic oxygen atoms from four different edta ions and two oxygen atoms from two H2O molecules. The degradation of the sample proceeds in several steps and the water molecules and ligands are successively emited.展开更多
The unified form of retention equation of chromatography is suggested by adoptingstatistical thermodynamics and lattice theory. According to different conditions, the retentionformulas of GC, LC and SFC can be obtaine...The unified form of retention equation of chromatography is suggested by adoptingstatistical thermodynamics and lattice theory. According to different conditions, the retentionformulas of GC, LC and SFC can be obtained from this unified equation. Those formulashave been confirmed by experimental data.展开更多
Two tri-n-butylphosphme-participated ( PBu3n) nickel (Ⅱ) complexes of 2-mercaptophenol(H2mp),i.e,Ni2Ru(mp)3(Hmp)(PBu3n)3 3 exhibiting a curved heterotrinuclear metal skeleton and its mononuclear "synthon",[...Two tri-n-butylphosphme-participated ( PBu3n) nickel (Ⅱ) complexes of 2-mercaptophenol(H2mp),i.e,Ni2Ru(mp)3(Hmp)(PBu3n)3 3 exhibiting a curved heterotrinuclear metal skeleton and its mononuclear "synthon",[HNEt3] [Ni(mp) (Hmp) (PBu3n)] 1 were synthesized and characterized by X-crystallography and 1H NMR,FAB-MS and cyclic valtammogram measurements.The nickel(Ⅱ) center in 1 has a square-planar geometry For 3,the ruthenium(Ⅲ) atom is in a distorted octahedral environment and the two mckel(Ⅱ) atoms exhibit square-planar and rare triangle-planar geometries,respectively.The Ni (1)-Ru-Ni(2 ) arrangement is severely asymmetric with the distances 0.254 and 0.394 nm,respectively,for Ni(1)-Ru and Ni(2)-Ru.The structural regularities of relevant complexes are summarized in relation to the structural as well as spectra data.展开更多
基金Under the auspices of National Natural Science Foundation of China (No. 40971019)National Basic Research Program of China (No. 2007CB411501)
文摘Comprehending regional characteristics and influencing factors of China＇s inbound tourism economy is im- portant to make effective policies that will help inbound tourism develop harmoniously and shrink regional disparity. This paper studied the regional disparity and convergence of China＇s inbound tourism economy during 1996-2008 with the methods of a-convergence, club convergence and r-convergence. The results indicate that 1） inbound tourism receipts per capita （ITRPC） of the whole country, the eastern, central and western regions presented the rapid increasing trend; 2） ITRPC of the whole country was characterized by convergence; 3） the eastern region presented club con- vergence, but the central and western regions did not show this trend; 4） the star-hotel levels and investment in fixed assets for the tourism industry per capita had a same trend to growth rates of ITRPC, promoting inbound tourism de- velopment, and there was no difference among the 31 provinces （municipalities） in the mainland of China; 5） but the proportion of employed persons in the tourism industry accounting for total population and the proportion of the terti- ary industry accounting for GDP had a reversal trend to growth rates of ITRPC, shrinking the provincial disparity in inbound tourism economy, and there were differences between the developed provinces and the developing provinces. Based on these analyses, we put forward some suggestions for the developing provinces to speed up inbound tourism economy.
文摘The novel three-dimension edta-linked （edta--ethylenediamine-N,N,N＇,N＇-tetraacetate） heterometallic complex [Sba（edta）2-μ4-Co（H20）2]·5.15H2O has been synthesized and characterized by elemental analyses, FT-IR spectrum, X-ray diffraction analyses and thermogravimetry-differential scanning calorimetry （TG-DSC）. The complex crys- tallizes in the monoclinic system, space group P21/n, lattice parameters： a=0.69969（2） nm, b=2.08705（4） nm, c-- 1.08106（2） nm, β=90.031（1）°, V=1.57866（6） nm3, Z=2, Mr=1007.76, Dc=2.120 g-cm 3 F（000）=1001,μ= 2.323 mm t, the final R=0.0235 and wR--0.0629 for 3480 observed reflections [l〉2σ（l）]. In the structure each Co（II） ion is connected with Sb（III） ions bridging by four carboxylic oxygen atoms, and in each [Sb（edta）] anion, the Sb（III） ion is six coordinated by two nitrogen and four oxygen from edta ions, together with a lone electron pair at the equatorial position. In the complex, the coordination number of Co（II） ion is six and its coordination environment is composed of four carboxylic oxygen atoms from four different edta ions and two oxygen atoms from two H2O molecules. The degradation of the sample proceeds in several steps and the water molecules and ligands are successively emited.
文摘The unified form of retention equation of chromatography is suggested by adoptingstatistical thermodynamics and lattice theory. According to different conditions, the retentionformulas of GC, LC and SFC can be obtained from this unified equation. Those formulashave been confirmed by experimental data.
文摘Two tri-n-butylphosphme-participated ( PBu3n) nickel (Ⅱ) complexes of 2-mercaptophenol(H2mp),i.e,Ni2Ru(mp)3(Hmp)(PBu3n)3 3 exhibiting a curved heterotrinuclear metal skeleton and its mononuclear "synthon",[HNEt3] [Ni(mp) (Hmp) (PBu3n)] 1 were synthesized and characterized by X-crystallography and 1H NMR,FAB-MS and cyclic valtammogram measurements.The nickel(Ⅱ) center in 1 has a square-planar geometry For 3,the ruthenium(Ⅲ) atom is in a distorted octahedral environment and the two mckel(Ⅱ) atoms exhibit square-planar and rare triangle-planar geometries,respectively.The Ni (1)-Ru-Ni(2 ) arrangement is severely asymmetric with the distances 0.254 and 0.394 nm,respectively,for Ni(1)-Ru and Ni(2)-Ru.The structural regularities of relevant complexes are summarized in relation to the structural as well as spectra data.
