Arrhenius模型模拟蜂蜜黏度-温度-含水量变化规律

蜂蜜的黏度受温度、含水量、成分以及蜜源产地等因素的影响。本文使用DHR-2流变仪测定了20个不同含水量的洋槐蜂蜜、荆条蜂蜜、油菜蜂蜜在5℃～25℃范围内的黏度值。在该温度范围内,蜂蜜的黏度随温度升高而降低,随含水量升高而降低。温度对洋槐蜂蜜、荆条蜂蜜、油菜蜂蜜的黏度的影响都遵从Arrhenius公式。蜂蜜的黏度受温度、水分、成分以及蜜源的影响,本文提出可用Arrhenius模型方程来描述蜂蜜的黏度随温度以及水分的变化趋势,可为蜂蜜黏度数据库的建立提供参考。     

油田采出液中微量羧酸盐表面活性剂分析方法研究

油田采出液中化学剂浓度的检测是三元复合驱动态评价的重要指标之一。本文针对现场提出的对微量羧酸盐表面活性剂的检测问题,建立了一种用紫外分光光度法测定微量羧酸盐表面活性剂分析的新方法。该法简便、准确快速,线性范围宽,回收率在94.4-103.1%之间,相对标准偏差为1.38%。并根据油田生产的实际情况,探论了碱、聚合物、原油等干扰因素对测定的影响,结果满意。     

锶Sr,钡Ba和镭Ra的单光子电四极矩光谱跃迁的理论研究

用带有Ｂｒｅｉｔ和ＱＥＤ修正的全相对论多组态Ｄｉｒａｃ－Ｆｃｃｋ平均能级（ＭＣＤＦ－ＡＬ）模型,计算了碱土金属Ｓｒ、钡Ｂａ和镭Ｒａ的单光子电四极矩＾１Ｄ－＾１Ｓ跃迁的光谱能量间隔,最大跃迁几率和振子强度。计算中考虑了重要的相对论效应、电子关联效应和核的有限体积效应,所得的结果与国外早期发表的结果进行了比较,此外还首次从理论上预言了镭Ｒａ的单光子电四极矩＾１Ｄ－１Ｓ光谱跃迁。     

PuO分子X5Σ-态的势能函数及热力学 函数的量子力学计算

The potential energy function for ground state X⁵Σ^- of the PuO molecule was worked out by the quadratic configuration interaction of single and double substitution method, based on the approximation of relativistic effective core potential for Pu atom and all-electron 6-311G^ basis set for O atom. The calculated results for R_e,D_e,B_e,α_e,ω_e and ω_eχ_e are 0.183nm,7.3909eV,0.3365,0.001642,781.15,and 2.77cm^-1,respectively.In addition,the thermodynamic functions ΔH⁰,ΔS⁰,ΔG⁰ and C_p of the PuO(g) in standard state are also calculated,which are -118.88kJ/mol,96.16J/mol^.K,-147.55kJ/mol,and 31.5656J/mol^.K,respectively. All these results are in good agreement with the experimental data.     

江苏制造业产业结构与用工结构变动与偏离关系实证分析

采用2002-2011年的江苏规模以上制造业面板数据,运用结构变化K值和Moore结构模型对比考察制造业产业结构、用工结构的变动速度和程度,运用结构偏离度模型对江苏制造业具体产业结构和用工结构的结构偏离方向、偏离变化情况进行实证分析.结果表明,近10年江苏制造业产业结构、用工结构各自变化呈扩大趋势,两者相比用工结构变化更明显.同时,产业结构与用工结构存在一定偏离,不同产业偏离方向和偏离程度存在差异,大部分劳动密集型产业为负偏离结构,而资本密集型产业为正偏离结构.     

Nonlinear Wave in a Disc-Shaped Bose-Einstein Condensate

We discuss the possible nonlinear waves of atomic matter wave in a Bose-Einstein condensate. One and two of two-dimensional （2D） dark solitons in the Bose-Einstein condensed system are investigated. A rich dynamics is studied for the interactions between two solitons. The interaction profiles of two solitons are greatly different if the angle between them are different. If the angle is small enough, the maximum amplitude during the interaction between two solitons is even less than that of a single soliton. However, if the angle is large enough, the maximum amplitude of two solitons can gradually attend to the sum of two soliton amplitudes.     

头孢拉定的电化学行为

头孢拉定在ＮｏＯＨ溶液中降解后，于０．３ｍｏｌ／Ｌ ＮａＯＨ底液中有一灵敏的导数还原峰。电峰位为－０．８４Ｖ左右，峰电流ｉｐ与头孢拉定浓度在２．０＊１０＾－８－５．０＊１０＾Ｔ－６ｍｏｌ／Ｌ范围内呈线性关系，检测限为５．０＊１０＾－９ｍｏｌ／Ｌ。     

基于偏离-份额分析的产业用工与就业协调研究——以江苏制造业为例

选择全国、长三角和广东为三个参照区域,建立五分量偏离一份额模型,从时间、空间、指标、分量四维,对江苏2007-2013年江苏制造业在产值、农民工就业人数、农民工劳动报酬、农民工净收入和农民工平均收入等解释变量进行实证分析.结果表明:1)考察期江苏制造业产值比较竞争优势明显,农民工就业人数却相反.2)江苏农民工劳动报酬和净收入的相比于全国和长三角有比较优势,但劣于广东;增长水平正相反,劣于全国和长三角而优于广东.3)江苏制造业产值、农民工劳动报酬、农民工净收入和农民工收入差四个指标均具有空间竞争力.     

A Flow-Tube and PERCA Study of Radical Yields in the Ozonolysis of Ethene

The production of radicals in the ozonolysis of ethene in air in a flow tube was monitored directly by a chemical amplification instrument at room temperature （298±2） K and 1 × 10^5 Pa. The radical yield is 0.50± 0.08 （σ） and found to be independent of CO. The result shows that the indirectly measured radical yields for the ozonolysis of ethene may be underestimated by a factor of 2.