上标

For k≥1, an isometry φ between codes over Zsubscript P(superscript k+1 and codes over Z(subscript P^2) is introduced and used to give a generalization of the Gray map φ: Z(superscript n subscript 4)→F(superscript 2n subscript 2). Furthermore, by means of this isometry, the concept of negacyclic codes is extended to codes over the ring Zsubscript P(superscript k+1. A characterization of these codes in terms of their images under φ is given. It is also shown that the generalized Gray map image of the 1-P(superscript k-cyclic code is a distance-invariant quasi-cyclic code.

文章引入了Z下标 P(上标 k+1码和Z(下标 P^2)码之间的等距同构φ(k≥1)；利用φ把Gray映射φ：Z(上标 n 下标 4)→F(上标 2n 下标 2)推广为φ：；而且利用φ，负循环码概念被推广到Z下标 P(上标 k+1码，得到了1-P(上标 k-循环码；依据等距同构φ，给出了这些码的表示；也证明了1-P(上标 k-循环码在推广的Gray映射下的像是距离不变的准循环码。

The anodic oxidation reactions of borohydride ion involves a novel and complex reaction system of three hydrogen valence states: protide H(superscript --protium H(superscript 0*-proton H(superscript +. Based on cyclic voltammetry and polarization studies, a multi-step mechanism for the oxidation of BH4-on Cu anode in NaOH solution was presented, and a kinetic expression containing the coverages of BH(superscript - subscript 4) and OH-adsorbed on the surface of Cu anode was deduced by the steady state approximation theory.

鉴于BH(上标-下标 4)阳极氧化反应涉及一个复杂的氢负离子H(上标-下标 4)－氢单原子H(上标 0*)－质子H之间价态转化的新颖反应体系，在循环伏安和极化实验研究基础上，提出了NaOH溶液中BH(上标-下标 4)在Cu电极上氧化反应的多步骤机理，导出了包含表面吸附态BH(上标-下标 4， ad)和OH覆盖率θ和θ的电极反应动力学方程。

The results indicate that the synthesized sphene has a good chemical durability in the aqueous solution whose pH value is 5-9, the temperature and pH of the solution have important influences to its chemical durability in 1-21 days.

结果表明，在pH为5~9的水溶液中，合成榍石具有良好的化学稳定性，温度和pH是影响1~21 d化学稳定性的重要因素；42 d Ca(上标 2+)的浸出率比Ti(上标 4+)的浸出率高2个数量级；在90℃、pH=7下，Ca(上标 2+)和Ti(上标 4+)的42d归一化浸出率分别为3.33×10^(-3)、1.33×10^(-5)gm^(-2)d^(-1)；在25℃、pH=7下，Ca(上标 2+)和Ti(上标 2+)的42d归一化浸出率分别为1.52×10^(-3)、3.05×10^(-5)m^(-2)d^(-1)；在25℃、pH=3下，Ca(上标 2+)的42d归一化浸出率达到7.71×10^(-2)gm^(-2)d^(-1)。

The better condition synthesizing the assorted minerals of zirconolite and sphene doping neodymium is holding 30 min at 1230℃, and the better formula is nCa(subscript 1-x/2-y/4 Zr(subscript 1-y/4);Al(subscript x/2) Ti(subscript 2-x/2O7): nCa(subscript 1-x NdAl Ti(subscript 1-x)SiO5[4/(4-y)]:1. Nd(superscript 3+) can enter crystal lattices of ite and sphene. Sphene can immobilize Zr(subscript 4+), Al(subscript 3+) and Nd(subscript 3+); Zr(subscript 4+) and Nd(subscript 3+) replace Ca(subscript 2+), and Al(subscript 3+) replaces Ti(subscript 4+). Zirconolite can immobilize Al(subscript 3+) and Nd(subscript 3+) Nd(subscript 3+) replaces Ca(subscript 2+) and Zr(subscript 4+), and Al(subscript 3+) and replaces Ti(subscript 4+).

研究表明：钙钛锆石和榍石组合矿物固化体较佳的合成条件是在1230℃条件下保温30min，较佳配方的摩尔比为nCa(下标 1-x/2-y/4 Nd(下标 x+y/2)Zr(下标 1-y/4)Al(下标 x/2)Ti(下标 2-x/2) O7：nCa(下标 1-x Nd Ti(下标 1-x)-SiO5=[4/(4-y)]：1；Nd(上标 3+)能够进入钙钛锆石和榍石晶格，榍石能够固溶Zr(上标 4+)、Al(上标 3+)、Nd(上标 3+)，Zr(上标 4+)和Nd(上标 3+)取代Ca(上标 2+)位，Al(上标 3+)占据Ti(上标 4+)位，钙钛锆石能够固溶Al(上标 3+)、Nd(上标 3+)，Nd(上标 3+)进入Ca(上标 2+)位和Zr(上标 3+)位，Al(上标 3+)占据Ti(上标 4+)位。

Structures and Vibrational Frequencies of Gas Phase and Solvated Uranyl Complexes UO2Lsuperscript 2-n(superscript *a subscript nL=F(superscript -, CO(superscript 2- subscript 3), NO(superscript - subscript 3); n=0-6, a=1, 2

篇名 气相和水溶液中铀酰配合物UO2L上标 2-n(上标*a 下标 nL=F(上标-， CO(上标 2-下标3)， NO(上标-下标3)； n=0-6， a=1， 2的结构和振动光谱

In this study, sulfate radical concentration from 4 drip water points (PL1, PL2, SH, JG) in the Shihua cave have been monitored for three years, and those from the drip water point was monitored for two years. Drip discharges show three types of response to surface precipitation variations: rapid response, response with associated time-lag and stable. The results show that:(1) SO(superscript 2- subscript 4) concentration in rapid response drip water increases sharply during rain period and has a exponential relationship with drip rate;(2) in the drip water of lag response, SO(superscript 2- subscript 4) concentration has no significant incrcase during rainfall, but they show a increasing trend during a long-term monitoring;(3) SO(superscript 2- subscript 4) concentration at the stable drip site is low and has no obvious change during wet weason.

本文通过对石花洞洞穴4个滴水点（JG， SH， PL1和PL2）硫酸根浓度近3个水文年的分析测定，结果表明：响应降雨快的滴水点滴水SO(上标 2-下标 4)浓度升高幅度最明显，且滴水SO(上标 2-下标 4)浓度与滴率成指数关系；滞后响应降雨的观测点滴水SO(上标 2-下标 4)浓度雨季升高幅度不明显，但在长期观测期间有明显增加的趋势；对降雨没有响应的滴水点，其SO(上标 2-下标 4)浓度低且雨季没有明显变化。

The floatation rate of Pd (superscript 2+) reaches 100% when the concentrations of NaNO3, KBr and cetyl pyridinium bromide in solution are 0.05 g/mL, 3.0×10^(-2) mol/L, 5.0×10^(-4) mol/L(pH 4.0), respectively. Pd (superscript 2+) could be separated from Ru (superscript 3+), Al (superscript 3+), Cr (superscript 3+), Ni (superscript 2+), Ga (superscript 3+), Fe (superscript 3+) and Zn (superscript 2+) by floatation quantiatively. A method of flotation separation and enrichment of Pd (superscript 2+) was established.

当溶液中硝酸钠、溴化钾、溴化十六烷基吡啶的浓度分别为0.05 g/mL，3.0×10^(-2)mol/L，5.0×10^(-4)mol/L，在pH 4.0时，Pd(上标 2+)的浮选率达到100%，Pd(上标 2+)可与Ru(上标 3+)，Al(上标 3+)，Cr(上标 3+)，Ni(上标 2+)，Ga(上标 3+)，Fe(上标 3+)，Zn(上标 2+)定量分离，据此建立了浮选分离和富集Pd(上标 2+)的新方法。

PL spectra indicate that the emission bands at 515 and 542 nm correspond to the 2H(subscript 11/2)→4I(subscript 15/2) and 4S(subscript 3/2)→4I(subscript 15/2) transitions of Er(superscript 3+), respectively. In the samples, the cerium dopant exists as Ce(superscript 3+) and Ce(superscript 4+). Ce(superscript 3+) sensitizes Er(superscript 3+) and enhances the luminescence intensity of the doped nanorods remarkably and energy transfer from Ce(superscript 3+)→Er(superscript 3+) was observed.

对发光机理的初步研究表明：发光分别对应于Er(上标 3+)的2H(下标 11/2)→4I(下标 15/2)，4S(下标 3/2)→4I(下标 15/2)跃迁，铈离子以Ce(上标 3+)和Ce(上标 4+)两种形式存在于体系中，Ce(上标 3+)对Er(上标 3+)起敏化作用，可以显著增强β-BBO：Er(上标 3+)/Ce(上标 3+)/Ce(上标 4+)纳米棒的发光强度，存在Ce(上标 3+)→Er(上标 3+)的能量传递过程。

When the concentrations of tetrabutyl ammonium bromide and KI in solution were 5.0×10^(-4) mol/L and 3.0×10^(-3)mol/L at pH 3.0, Bi(superscript 3+) could be quantitatively separated from Mo, Ga(superscript 3+), Co(superscript 2+), Mn(superscript 2+), Zn(superscript 2+), Rh(superscript 3+), Al(superscript 3+), Cr, V, Ni(superscript 2+), Sn, W and Fe(superscript 2+).

当溶液中溴化四丁基铵和碘化钾的浓度分别为5.0×10^(-4) mol/L和3.0×10^(-3)mol/L和在PH3时，Bi(上标 3+)可与Mo，Ga(上标 3+)，Co(上标 2+)，Mn(上标 2+)，Zn(上标 2+)，Rh(上标 3+)，Al(上标 3+)，Cr，V，Ni(上标 2+)，Sn，W和Fe(上标 2+)定量分离。

The initial rate V0 was influenced by the ratio of molar concentration for butanol to hexanoic acid C(superscript 0 subscript ROH)/C(superscript 0 subscript HA)(at a range of 0.2-17). As C(superscript 0 subscript ROH)/C(superscript 0 subscript HA) decreases, especially when C(superscript 0 subscript ROH)/C(superscript 0 subscript HA), the V0 increases rapidly.

反应初始速率V0与正丁醇和正己酸摩尔浓度的比值C(上标 0 下标 ROH/C(上标 0 下标 HA)有关，在C(上标 0 ROH)/C(上标 0 下标 HA)=0.2-17范围内，随C(上标 0 下标 ROH)/C(上标 0 下标 HA)比值减小，初始速率V0增大，尤其是当C(上标 0 下标 ROH)/C(上标 0 下标 HA)时，V0迅速增大。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐