物理教学中的科学美教育

中学物理课程标准明确指出,物理课程应以提高学生的科学素养为主要目标,要求学生通过学习,体会其中的科学思想与方法,领略自然界的奇妙与和谐,发展对科学的好奇心与求知欲．这些要求体现了科学美教育的内容．因此,在物理教学过程中,应重视科学美的教育．以全面提高学生的科学素养．     

THERMOELECTRIC POWER IN (Gd,Sm)1.85Ce0.15CuO4 SYSTEM

Thermoelectric power measurements are reported for seven samples with different x in the Gd_1.85-xSm_xCe_0.15CuO₄ system at temperatures ranging from 80K to 300K. For Sm-rich superconducting samples, thermoelectric power S has a small negative value and is almost temperature independent. As the content of Sm decreases, the absolute value of S increases and a broad valley appears in the S(T) curve. The results which can be interpreted in terms of a two-channel model support the existence of mid-gap states with Fermi level close to the minimum of the density of states as well as the coexistence of electron and hole carriers. It is suggested that a linear temperature dependence of S with a small negative slope is close to the intrinsic behavior in the a-b plane of normal states for superconducting samples.     

PrBa_2Cu_3O_（7－δ）膜的电阻率和热电势

在７７Ｋ到３００Ｋ的温度范围内测量了ＰｒＢａ２Ｃｕ３Ｏ７－δ薄膜的电阻率和热电势．通过用变程跳跃（ＶＲＨ）和近邻跳跃（ＮＮＨ）模型的公式拟合实验数据，发现这种材料的电阻率和热电势行为可以用跳跃机制解释．     

铝棒振动波动实验的理论分析

结合实际从理论上分析和解释了铝棒振动波动的实验，并揭示出两端自由的金属棒内部的振动传播规律。     

测量复方药物溶出度的全自动药物溶出度测定仪

自行设计组装了一套可以同时测定复方药剂的全自动药物溶出度测定仪.该仪器由光学检测系统(由光源、流动型吸收池,小型光谱仪组成)、自动进样系统、控制与数据处理系统和机械搅拌系统4部分组成.光学系统的检测器是线阵电荷耦合器件(CCD),故可进行同时全光谱采集.数据处理部分采用了自行设计的基于径向基函数的人工神经网络进行浓度预测.用本装置对市售复方药剂鲁南贝特进行的溶出度测量表明,测量的精密度高,准确度较高,分析速度快,样品无需前处理.     

THERMOELECTRIC POWER IN (Gd, Sm)1.85Ce0.15CuO4 SYSTEM

Thermoelectric power measurements are reported for seven samples with different x in the Gd_1.85-xSm_xCe_0.15CuO₄ system at temperatures ranging from 80K to 300K. For Sm-rich superconducting samples, thermoelectric power S has a small negative value and is almost temperature independent. As the content of Sm decreases, the absolute value of S increases and a broad valley appears in the S(T) curve. The results which can be interpreted in terms of a two-channel model support the existence of mid-gap states with Fermi level close to the minimum of the density of states as well as the coexistence of electron and hole carriers. It is suggested that a linear temperature dependence of S with a small negative slope is close to the intrinsic behavior in the a-b plane of normal states for superconducting samples.     

单摆振动周期的探讨

研究了摆球的线度、所处的地理位置、介质黏度和密度等因素对单摆振动周期的影响.     

物理实验教学中“目标问题”教学法的运用与实践研究

本文根据教与学的原理,分析了物理实验教学中存在的问题,阐述了“目标问题”教学法的含义、操作程序及在大学物理实验教学改革中的重要意义.     

多功能波动演示器的研制及应用

1前言演示仪器是物理形象化教学不可缺少的物质基础．我们在物理教学形象化的研究与实践中研制了“多功能波动演示器”，本文仅对该演示仪器的研制及其应用作以介绍．2仪器的构造及特征多功能波动演示器的构造如图a所示．该仪器采用以弹簧联接起来的数根等间隔分布的平衡式金属杆作为波媒质体系，每根金属杆可绕自身的中心对称轴转动，中心对称轴由上下两横梁固定，下横梁固定在仪器支架上，每根金瞩杆的中心对称轴可随上横梁在校、竖二维方向上同步转动。当把上横梁拉起时，全同杆的中心对称轴竖起来，金属杆可在水平面上转动（振动）。可…