A sub-1 V high-precision CMOS bandgap voltage reference

A third-order, sub-1 V bandgap voltage reference design for low-power supply, high-precision applications is presented. This design uses a current-mode compensation technique and temperature-dependent resistor ratio to obtain high-order curvature compensation. The circuit was designed and fabricated by SMIC 0.18 μm CMOS technology. It produces an output reference of 713.6 mV. The temperature coefficient is 3.235 ppm/℃ in the temperature range of -40 to 120 ℃, with a line regulation of 0.199 mV/V when the supply voltage varies from 0.95 to 3 V. The average current consumption of the whole circuit is 49 μA at the supply voltage of 1 V.     

职务犯罪概念及其成因的法律文化学初探

职务犯罪成因的分析有助于职务犯罪的预防，近年来我国正处于社会转型时期，职务犯罪较为猖獗，本文从法律文化的角度出发，探讨了职务犯罪的概念覆其成因，以期在前人研究的基础上，进一步丰富职务犯罪成因探讨的成果，为我国职务犯罪控制提供法律文化学的对策。     

Test of subcritical crack growth and fracture toughness under water-rock interaction in three types of rocks

The subcritical crack growth and fracture toughness in peridotite, lherzolite and amphibolite were investigated with double torsion test. The results show that water-rock interaction has a significant influence on subcritical crack growth. With water-rock interaction, the crack velocity increases, while the stress intensity factor declines, which illustrates that water-rock interaction can decrease the strength of rocks and accelerate the subcritical crack growth. Based on Charlse theory and Hilling & Charlse theory, the test data were analyzed by regression and the correlation coefficients were all higher than 0.7, which shows the correlation is significant. This illustrates that both theories can explain the results of tests very well. Therefore, it is believed that the subcritical crack growth attributes to the breaking of chemical bond, which is caused by the combined effect of the tensile stress and the chemical reaction between the material at crack tip and the corrosive agent. Meanwhile, water-rock interaction has a vital effect on fracture toughness. The fracture toughness of samples under atmospheric environment is higher than that of samples immersed in water. And water-rock interaction has larger influence on fracture toughness in amphibolite than that in peridotite and lherzolite.     

试论我国民法典中债权总则的存废

我国的民法典正在制定之中，官方与民间的草案已出台了多个，在对民法典的体系的建构上，学者之间存有较大的分歧，争论的焦点之一便是债权总则的存废。本文试从债权总则存废的理论探讨，对债权总则存废的现实考查以及构建法典体系的标准这三个方面来阐述保留债权总则的必要性。     

ZnO基透明导电薄膜及其稳定性研究进展

主要阐述Zn O基透明导电薄膜及其稳定性的研究现状,介绍了IIIA-IIIB族共掺杂Zn O透明导电薄膜的研究成果。     

隧道穿越既有支挡结构设计方案优化研究

山地城市交通工程建设过程中,出现了大量隧道穿越既有支挡结构的情况,隧道建设过程中可能会导致边坡的滑移破坏。本文以重庆曾家岩嘉陵江大桥工程为依托,边坡支挡结构拟采用抗滑钢架+锚索桩,依据勘察报告,采用荷载-结构法对隧道穿越既有支挡结构时采用的不同支挡结构加固方案和不同嵌固条件下支挡结构典型剖面的内力和变形进行研究。研究表明:随着新建支挡结构的左右桩嵌固深度的加大,支挡结构的水平和竖向最大位移在量值上均呈现出先减小后增大的趋势,最大弯矩量值呈现出减小的趋势,最大剪力量值呈现出先减小后增大的趋势,最大拉力量值呈现出减小的趋势,而最大压力量值亦呈现出减小的趋势。通过方案对比分析,采用抗滑钢架+锚索桩的加固方案有利于控制既有支挡结构的变形,确保地面变形在合理的范围内。