目的:为了获得中国男童从出生到14岁的超声测量的睾丸体积的正常参考值范围。方法:收集我院门诊或住院行睾丸超声检查的睾丸正常的0~14岁的男童,按年龄分成14组,每组不少于100例,行超声测量,计算各年龄组的睾丸体积的均数、标准差及中...目的:为了获得中国男童从出生到14岁的超声测量的睾丸体积的正常参考值范围。方法:收集我院门诊或住院行睾丸超声检查的睾丸正常的0~14岁的男童,按年龄分成14组,每组不少于100例,行超声测量,计算各年龄组的睾丸体积的均数、标准差及中位数。结果:共测量1607例,得到各组的睾丸体积的平均值及标准差、中位数。0~8岁睾丸体积增大缓慢(0.372~0.678 ml),9岁以后睾丸开始加速增长(1.040~4.600 ml)。9~10岁、10~11岁、11~12岁、12~13岁、13~14岁的睾丸体积分别为(1.040±0.970)ml、(1.876±1.631)ml、(2.831±2.155)ml、(3.640±2.376)ml、(4.600±3.559)ml。但是,0~1岁组的睾丸体积比1~2岁体积大(0.403±0.130 ml vs 0.372±0.110 ml,P=0.04),与年龄呈负相关。结论:超声是一种有效的测量睾丸体积的方法,为0~14岁的中国男童提供了睾丸体积的正常参考值,可用于指导临床诊疗和咨询。展开更多
A novel polyoxometalate {[Ag^I（4,4＇-bipy）]3[PW12O40]}·（4,4＇-bipy）·4H2O 1 has been synthesized hydrothermally and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crysta...A novel polyoxometalate {[Ag^I（4,4＇-bipy）]3[PW12O40]}·（4,4＇-bipy）·4H2O 1 has been synthesized hydrothermally and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crystal of 1 belongs to the triclinic system, space group P1 with a = 11.3710（17）, b = 12.0701（16）, c = 13.1061（12） A, α = 112.838（3）, β = 94.545（6）, γ = 99.526（4）°, V = 1614.4（4） A^3, Mr = 3825.40, Z = 1, Dc = 3.935, μ = 22.289mm^-1, F（000） = 1692, the final R = 0.0507 and wR = 0.1054. X-ray diffraction analysis reveals that the molecular structure of 1 consists of three coordinated cations [AgI（4,4＇-bipy）]＋, a polyanion unit [PW12O40]3-, and a discrete 4,4′-bipy molecule. Significantly, there exist two crystallographically independent silver（I） centers in 1 and all [AgI（4,4＇-bipy）]^＋ cations are linked with each other to form a one-dimensional Ag-4,4＇-bipy polymer chain. The neighboring polymer chains are further interconnected to form a 3D framework by the covalent effect of silver atoms and terminal oxygen atoms of the polyanion. The electrochemical behaviors of 1 have also been studied in detail by cyclic voltammograms.展开更多
A new pseudo three-dimensional framework structure of the title compound {[CuⅡ（1,10-phen）]2[PMoⅥ11MoⅤO40]}[CuⅠ（C8N4H6）（C9H6NO）（H2O）]（1） has been prepared by the hydrothermal method for the first time and...A new pseudo three-dimensional framework structure of the title compound {[CuⅡ（1,10-phen）]2[PMoⅥ11MoⅤO40]}[CuⅠ（C8N4H6）（C9H6NO）（H2O）]（1） has been prepared by the hydrothermal method for the first time and characterized by elemental analyses,X-ray single-crystal diffraction and IR spectra.1 consists of two building blocks,one {[CuⅡ（1,10-phen）]2[PMoⅥ11MoⅤO40]} and one [CuⅠ（C8N4H6）（C9H6NO）（H2O）] coordinated group.Singlecrystal X-ray diffraction revealed that 1 crystallizes in the monoclinic system,space group P2/c with a=13.498（4）,b=12.890（3）,c=21.465（8）,β=97.314o,V=3704（2）3,Mr=2693.61,Z=2,Dc=2.415 Mg/m3,μ=2.915 mm-1,F（000）=2562,S=1.009,the final R=0.0583 and wR=0.1406 for 5129 observed reflections with I2σ（I）.Furthermore,compound 1 shows strong fluorescent properties in the solid state at room temperature.The electrochemical behavior of 1 has also been studied by cyclic voltammograms.展开更多
文摘目的:为了获得中国男童从出生到14岁的超声测量的睾丸体积的正常参考值范围。方法:收集我院门诊或住院行睾丸超声检查的睾丸正常的0~14岁的男童,按年龄分成14组,每组不少于100例,行超声测量,计算各年龄组的睾丸体积的均数、标准差及中位数。结果:共测量1607例,得到各组的睾丸体积的平均值及标准差、中位数。0~8岁睾丸体积增大缓慢(0.372~0.678 ml),9岁以后睾丸开始加速增长(1.040~4.600 ml)。9~10岁、10~11岁、11~12岁、12~13岁、13~14岁的睾丸体积分别为(1.040±0.970)ml、(1.876±1.631)ml、(2.831±2.155)ml、(3.640±2.376)ml、(4.600±3.559)ml。但是,0~1岁组的睾丸体积比1~2岁体积大(0.403±0.130 ml vs 0.372±0.110 ml,P=0.04),与年龄呈负相关。结论:超声是一种有效的测量睾丸体积的方法,为0~14岁的中国男童提供了睾丸体积的正常参考值,可用于指导临床诊疗和咨询。
基金Supported by the Ministry of Education of China (No. 208066)the Education Department of Fujian Province (JA07029)+1 种基金the Natural Science Foundation of Fujian Province (2010J01026)the State Key Laboratory of Structural Chemistry (No. 20080053)
文摘A novel polyoxometalate {[Ag^I（4,4＇-bipy）]3[PW12O40]}·（4,4＇-bipy）·4H2O 1 has been synthesized hydrothermally and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crystal of 1 belongs to the triclinic system, space group P1 with a = 11.3710（17）, b = 12.0701（16）, c = 13.1061（12） A, α = 112.838（3）, β = 94.545（6）, γ = 99.526（4）°, V = 1614.4（4） A^3, Mr = 3825.40, Z = 1, Dc = 3.935, μ = 22.289mm^-1, F（000） = 1692, the final R = 0.0507 and wR = 0.1054. X-ray diffraction analysis reveals that the molecular structure of 1 consists of three coordinated cations [AgI（4,4＇-bipy）]＋, a polyanion unit [PW12O40]3-, and a discrete 4,4′-bipy molecule. Significantly, there exist two crystallographically independent silver（I） centers in 1 and all [AgI（4,4＇-bipy）]^＋ cations are linked with each other to form a one-dimensional Ag-4,4＇-bipy polymer chain. The neighboring polymer chains are further interconnected to form a 3D framework by the covalent effect of silver atoms and terminal oxygen atoms of the polyanion. The electrochemical behaviors of 1 have also been studied in detail by cyclic voltammograms.
基金supported by the Key Project of Chinese Ministry of Education (No 208066)Natural Science Foundation of Fujian Province (2007J0216, U0750004)+1 种基金Education Department of Fujian Province (JA07029)State Key Laboratory of Structural Chemistry (No 20080053)
文摘A new pseudo three-dimensional framework structure of the title compound {[CuⅡ（1,10-phen）]2[PMoⅥ11MoⅤO40]}[CuⅠ（C8N4H6）（C9H6NO）（H2O）]（1） has been prepared by the hydrothermal method for the first time and characterized by elemental analyses,X-ray single-crystal diffraction and IR spectra.1 consists of two building blocks,one {[CuⅡ（1,10-phen）]2[PMoⅥ11MoⅤO40]} and one [CuⅠ（C8N4H6）（C9H6NO）（H2O）] coordinated group.Singlecrystal X-ray diffraction revealed that 1 crystallizes in the monoclinic system,space group P2/c with a=13.498（4）,b=12.890（3）,c=21.465（8）,β=97.314o,V=3704（2）3,Mr=2693.61,Z=2,Dc=2.415 Mg/m3,μ=2.915 mm-1,F（000）=2562,S=1.009,the final R=0.0583 and wR=0.1406 for 5129 observed reflections with I2σ（I）.Furthermore,compound 1 shows strong fluorescent properties in the solid state at room temperature.The electrochemical behavior of 1 has also been studied by cyclic voltammograms.
