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Ion sputter erosion in metallic glass-A response to "Comment on: Homogeneity of Zr(64.13)Cu(15.75)Ni(10.12)Al(10) bulk metallic glass" by L-Y. Chen, Y-W. Zeng, Q-P. Cao, B-J. Park, Y-M. Chen, K. Hono, U. Vainio, Z-L. Zhang, U. Kaiser, X-D. Wang, and J-Z Jiang J. Mater. Res. 24, 3116 (2009)

Journal of Materials Research

The morphology of the dark and bright regions observed by transmission electron microscopy for the Zr(64.13)Cu(15.75)Ni(10.12)Al(10) bulk metallic glass strongly depends on the ion beam parameters used for ion milling. This indicates that the ion beam could introduce surface fluctuation to metallic glasses during ion milling.

关键词: room-temperature

Broer-Kaup-Kupershmidt方程的新精确解

杨立娟 , 杨琼芬 , 杜先云

量子电子学报 doi:10.3969/j.issn.1007-5461.2012.02.003

CK方法是求解非线性发展方程的一种有效的直接方法.利用推广的CK方法,求得(2+1)维Broer-Kaup-Kupershmidt方程的Backlund公式,从而获得方程的大量新的精确解,推广了Xu和Zhang的结果.

关键词: 非线性发展方程 , Broer-Kaup-Kupershmidt方程 , 精确解 , CK方法 , Backlund变换

镧-依文思蓝-氨基糖苷类抗生素的显色反应及其分析应用

江虹 , 胡小莉 , 刘绍璞 , 秦宗会 , 湛海粼

应用化学 doi:10.3969/j.issn.1000-0518.2003.09.016

在pH值为3.5~6.0,镧(Ⅲ)-依文思蓝(EB)与硫酸新霉素(NEO)、硫酸卡那霉素(KANA)、硫酸庆大霉(GEN)和硫酸妥布霉素(TOB)等氨基糖苷类抗生素反应可生成具有吸收峰和负吸收峰的三元蓝色离子缔合物.其最大吸收波长位于668~674 nm,线性范围从0~1.20×10-5g/mL至0~1.加×10-5g/mL,摩尔吸收光系数(ε)在3.10×104~6.17×104L/(mol@cm)之间;最大负吸收波长位于614~620 nm,线性范围从0~9.00×10-6g/mL至0~1.7×10-5g/mL,摩尔吸收光系数(ε)在4.33×104~1.04×105L/(mol@em).当用正负光吸收叠加时,灵敏度更高.探讨了反应条件、主要分析化学性质及三元缔合物的配合比(LA:EB:GEN=1:2:3).

关键词: 镧(Ⅲ),依文思蓝,氨基糖苷,抗生素,分光光度法

Three-dimensional (3D) Ising universality in magnets and critical indices at fluid-fluid phase transition

Phase Transitions

Experimental data for critical exponents in some magnetic materials are compared with recent theoretical results on the three-dimensional (3D) Ising model, as derived by one of us (ZDZ) based on two conjectures [Z.D. Zhang, Conjectures on the exact solution of three-dimensional (3D) simple orthorhombic Ising lattices, Phil. Mag. 87 (2007), pp. 5309-5419]. It is found that critical exponents in some bulk magnetic materials indeed form a 3D Ising universality. Our attention is then focused on the critical indices at fluid-fluid phase transition. We suggest to use Zhang's exponent = 3/8 to fit the experimental data over the wider asymptotic region near the critical point of a fluid-fluid phase transition. The 3D Ising universality should exist for critical indices in a certain class of magnets and at fluid-fluid phase transition.

关键词: magnetically ordered materials;fluid-fluid;phase transitions;order-disorder effects;ferromagnetic curie temperature;liquid critical phenomena;x-ray-scattering;critical exponents;critical-point;coexistence;curves;binary-solutions;ionic-solutions;behavior;equation

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