应用Origin8.0软件计算惠斯登电桥中的待测电阻

固定实验条件,使得惠斯登电桥灵敏度是标准电阻的一元函数。再应用Origin8.0软件对实验数据进行曲线拟合,从而得到待测电阻、检流计内阻以及检流计灵敏度的数值。     

On-column injection onto capillary columns. Part 2: Study of sampling conditions; practical recommendations

During one year continuous use of on-column injection, the typical advantages described in our first report have fully been confirmed. In addition the analysis of large sample volumes has proved promising. Only minor modifications have been applied to the on-column injector device. Broad evidence has been gathered showing that full separation efficiency of the capillary columns after on-column injection is attained only when cold trapping or the solvent effect, as band shortening mechanisms, are working- While, under the conditions of on-column injection, cold trapping is less efficient than with other injection techniques, the opposite holds true for the solvent effect. Compared with splitless injection, the danger of excessive solvent condensation on the column is increased. A working rule is presented for establishing the optimal chromatographic conditions for handling large sample volumes while ensuring full separation efficiency yet avoiding harm to the column.     

基于Origin 8.0的精馏实验数据处理实例

精馏塔全塔效率测定实验数据处理中需要交替使用相平衡方程和操作方程进行逐板下行计算,传统的手工图解法和新开发的数据处理软件存在工作量大、可靠性差、实验教学质量无法保证的弊端。结合实例,选择分段拟合法探讨了Origin 8.0软件在精馏实验中的应用。该操作简单易懂,有效地提高了学生的实验数据处理和准确分析能力。     

Enzyme/semiconductor nanoclusters combined systems for novel amperometric biosensors

In this work quantum-sized CdS nanocrystals were synthesized using a quaternary water-in-oil microemulsion and immobilized onto gold working electrode by self-assembled monolayers techniques. Formaldehyde dehydrogenase was covalently immobilized onto a protecting membrane, which was stratified on part of the semiconductor nanoparticles modified electrode. The covalent enzyme immobilization has been required to improve the stability of the catalytic oxidation of formaldehyde, which occurs after light stimulation of the semiconductor through the electron/hole recombination. A study about the best electrochemical oxidation potentials under different flow conditions was performed. Preliminary sensor stability and interferences tests were also carried out, for a sensitive and selective detection of formaldehyde. A detection limit of 41 ppb of formaldehyde was calculated and an operational stability of 6 h was achieved under flow conditions by means of this novel amperometric biosensor based on FDH-semiconductor hybrid systems, not requiring NAD⁺/NADH as charge transfer in the enzymatic reaction.     

ZrF分子基态(X~2Δ)的光谱研究

现有Zr F分子的理论值与实验值偏差较大,且有一些光谱参数暂时还没有实验结果.本文基于群论及原子分子反应静力学推导出了Zr F分子的基态电子状态(X2Δ)和合理的离解极限.采用密度泛函理论(B3LYP,B3P86)和二阶微扰理论(MP2)方法,对Zr和F原子分别选择不同的基组进行结构优化和频率计算,根据计算结果及现有实验数据,分析得出在MP2方法下,对Zr使用Lan L2DZ基组,对F使用AUG-cc-PVTZ基组计算得出的结构与实验值较为符合.然后根据优化后的方法及基组扫描了基态Zr F分子的单点能,得到的基态Zr F分子的势能曲线数值,通过Level 8.0软件拟合了势能曲线并得出了一些光谱常数.最后,由拟合得到的光谱常数(De,ωe,ωeχe,Te,Be)与实验值和其他理论值进行了比较.本文的计算结果(Re=0.1859nm,De=7.1046e V,ωe=701.25cm-1,ωeχe=2.6398cm-1,Te=-9.3473cm-1,Be=0.3104cm-1)更接近于实验值.     

用PB8.0开发的核辐射探测实验教学软件

本针对核辐射探测实验中所获取的实验数据量大、处理复杂的问题,提出了用实验教学软件通过计算机判断所获取的核辐射探测实验数据,为学生做实验时所获取的实验数据的正确与否做出直观、方便、快速的判断,从而提高实验教学质量。     

利用Origin8.0软件简化大学物理实验数据的处理

以铁磁材料磁化曲线与磁滞回线实验为例,介绍如何利用Origin8.0软件中绘图、曲线拟合、积分等功能简化对数据进行处理过程。针对处理后数据进行讨论,并将操作方法推广到其他大学物理实验中。     

教师工作量管理系统的设计与实现

TWMS1．0(Teacher Workload Management System，教师工作量管理系统)是我们开发的教学管理软件，已在我院投入使用．该系统是用流行的数据库前端开发工具Power Builder 8．0开发的，适用于新疆大学教职工工作量信息的管理、统计与分析．本文分析了系统的整体结构、功能以及特点，应用本系统能够科学、规范、高效率地做好教职工工作量的管理工作，提高工作效率。