基础物理实验网络教学及管理系统的开发研究

本文主要介绍如何利用计算机技术开发《基础物理实验网络教学及管理系统》,用以提高实验教学质量,使实验教学管理工作更加规范化、标准化和高效化.     

实验物理考核方法研究与实践

对实验物理课程教学效果的检查和评价方法进行了研究，提出了物理实验分类考核及等级证制度及具体考核方法和实施步骤，力求形成一套比较规范化的实验物理考核办法，能客观的反映出实验物理课程教学效果，促进教学改革。     

物理实验考核方法与命题的探讨

为加强普通物理实验课教学环节，全方位地提高物理实验教学水平，物理实验的考核方法与命题类型，不是单一而是更多样化。本文就物理实验的考核方法与命题加以探讨，从而提高物理实验课教学质量。     

理工科院校物理实验规范化教学的探讨

本文探讨了物理实验规范化教学的方向、内容、方法和手段,强调从方向上符合正确性和原则性,内容上符合系统性和严谨性,方法上符合先进性和规范性,手段上符合科学科和文明性.并指出了实验规范化教学应重视的几种新概念.     

高师普通物理实验教学改革探讨

物理学是一门实验科学，普通物理实验是高师院校物理专业重要的基础课程．物理实验教学不仅有助于学生理解和掌握物理学的理论，而且是提高学生分析问题和解决问题能力不可缺少的教学环节．物理实验教学可使学生在如何运用理论知识、实验方法和实验技术解决科技问题得到必要的基本训练，对于培养学生严谨的科学作风，实事求是的科学态度，辩证唯物主义世界观，以及良好的实验室工作的习惯，也有着不可忽视的作用．因此，加强与改进物理实验教学对提高教学、教育质量是重要一环．但就目前普通物理实验课的教学现状来看，仍然存在许多弊端，主…     

高等学校大学物理和物理实验课程教学基本要求研讨会会议纪要

为了保障和提高高校物理基础课程的教学质量，切实实施并在实施中进一步完善新的大学物理和物理实验课程两个教学“基本要求”，由教育部高等学校物理基础课程教学指导分委员会主办、东华理工大学承办的“高等学校大学物理和物理实验课程教学基本要求研讨会”于2008年7月16-19日，在江西省抚州市召开．     

谈物理实验课程的现代化

本文阐述了物理实验课程现代化的问题，以提高物理实验课的教学水平。     

物理教学中的计算机辅助教学

物理实验往往给课堂教学带来一定的难度，如将计算机辅助教学引入物理课堂，能明显提高教学效率和质量、改善课堂教学氛围。     

阶梯式物理实验教学

物理实验课程是工科学生进行科学实验基本训练的一门独立和必修的基础课、是学生进入大学学习后，受到系统的实验方法和实验技能训练的第一门实验课程，为了在有限的教学时间内，提高物理实验课程的教学质量，扬州工学院物理实验室自一九八四年以来，     

生活化教学理念在初中物理教学中的渗透策略

初中物理作为自然科学的重要分支之一，其教学内容的生动性和可操作性对于学生的学习成效具有至关重要的影响。因此，在初中物理教学中运用生活化教学理念，不仅可以帮助学生更好地理解物理概念，提高物理实验操作技能，而且可以激发学生学习兴趣和主动性。本文将探讨生活化教学理念在初中物理教学中的应用现状，并提出相应的渗透策略，旨在为初中物理教学提供新的思路和方法。     

Stokes integral of economic growth: Calculus and the Solow model

Economic growth depends on capital and labor and two-dimensional calculus has been applied to economic theory. This leads to Riemann and Stokes integrals and to the first and second laws of production and growth. The mathematical structure is the same as in thermodynamics, economic properties may be related to physical terms: capital to energy, production to physical work, GDP per capita to temperature, production function to entropy. This is called econophysics. Production, trade and banking may be compared to motors, heat pumps or refrigerators. The Carnot process of the first law creates two levels in each system: cold and hot in physics; buyer and seller, investor and saver, rich and poor in economics. The efficiency rises with the income difference of rich and poor. The results of econophysics are compared to neoclassical theory.     

Ohmic Contacts to ZnSe-Based Materials

The formation of ohmic contacts to n- and p-type ZnSe is reviewed. The mechanisms for forming reasonable low-resistance ohmic contacts to n-ZnSe are well understood. This results from the fact that the Fermi energy level of ZnSe is unpinned and metals with sufficiently large work functions can make contact to n-type material. However, the situation is reversed for p-ZnSe where a large band gap and large electron affinity make it impossible to find metals with sufficiently large work functions to create an ohmic contact. Instead, the use of HgSe to form low barrier height Schottky contacts and of ZnSe/ZnTe multiple quantum wells (MQWs) to form ohmic contacts is reviewed. Although the MQWs can be used to form ohmic contacts to p-ZnSe, they degrade at high temperatures and high current densities. This is reviewed and shown to be a serious problem for applications to laser diodes.     

Role of waveguide and surface plasmon resonances in surface-enhanced Raman scattering at coldly evaporated metallic films

A film surface, modeled by a grating with rectangular grooves, is shown to give rise to both short and long ranged enhancements due to excitation of planar surface plasmon resonances, and to short ranged, more intense, enhancements due to excitation of waveguide resonances. The latter type of enhancement is shown to become more intense as the ratio of grating period to groove width increases and to be able to account for experimentally observed SERS signals at very low as well as at higher temperatures.     

圆柱螺旋弹簧迟滞的检测和补偿

介绍一种利用微电容测量技术检测圆柱螺旋压缩弹簧迟滞和利用单片机技术对迟滞进行补偿的实验方法,该方法涉及螺旋机构、电子秤和拟合曲线的求法等.通过这一实验,能帮助学生理解真实材料在一定程度上存在迟滞现象,掌握变极距电容传感器的概念,提高知识的综合应用能力和设计动手能力.     

The energy levels and electromagnetic properties of some Gd-isotopes in an extended rotation-vibration model

The extended rotation-vibration model containing different deformations for protons and neutrons is applied to even-even Gd-isotopes and the results are compared to experiment and to other theoretical models. It is found to describe magnetic transitions reasonably well and to also give improved electric transition rates compared to the conventional model.     

Modifications to functional and biological properties of proteins of cowpea pulse crop by ultrasound-assisted extraction

Natural resource depletion, negative environmental effects and the challenge to secure global food security led to the establishment of the Sustainable Development Goals (SDGs). In need to explore underutilized sustainable protein sources, this study aims at isolating protein from cowpea by ultrasound-assisted extraction (UAE), where the techno-functional characteristics of the protein isolates were studied at different sonication conditions i.e., 100 W and 200 W at processing times ranging from 5 to 20 min. The US at 200 W-10 min produced the optimal results for all properties. In this process combination, there was an increase in protein yield, solubility, water-holding capacity, foaming capacity and stability, emulsion activity and stability, zeta-potential, and in-vitro protein digestibility from 31.78% to 58.96%, 57.26% to 68.85%, 3.06 g/g to 3.68 g/g 70.64% to 83.74%, 30.76% to 60.01%, 47.48% to 64.26%, 56.59% to 87.71%, –32.9 mV to −44.2 mV and 88.27% to 89.99%, respectively and particle size dropped from 763 nm to 559 nm in comparison to control. The microstructure and secondary-structure alterations of proteins caused by sonication were validated by SEM images, SDS-PAGE, and FTIR analyses. Sonication leads to acoustic cavitation and penetrate the cell walls, improving extraction from the solid to liquid phase. After sonication, the hydrophobic protein groups were exposed and proteins were partially denatured which increased its functionality. The findings demonstrated that UAE of cowpea protein improved yield, modify characteristics to fit the needs of the food industry, and contribute to achieving SDGs 2, 3, 7, 12, and 13.     

Multistep processes in nuclear reactions

Recent applications of the theory of Feshbach, Kerman and Koonin to analyse multistep processes in nuclear reactions are described, and illustrated by detailed comparisons with a range of experimental data for neutron and proton reactions. The techniques used to distinguish between the multistep direct, multistep compound, compound and collective contributions to the cross-sections are described, and their effectiveness assessed. Particular attention is devoted to recent analyses that take into account the transitions from the multistep direct to the multistep compound chain and also to those that evaluate the collective contributions to the continuum region. The variation of the effective nucleonnucleon interaction with incident energy and target nucleus is studied, and the possibility of a parameter-free calculation is discussed. The extensions of the theory to include multiparticle emission from the direct chain and also to studies of alpha-particle emission are described.     

测量液体粘度实验的改进

在落球法测液体粘度的基础上，利用阿特武德机控制小球的运动速度和方向，从而突破了原落球法测液体粘度的局限性，且丰富了该实验的物理思想和内容，并作为一个综合性、设计性实验应用于教学之中。     

Complete experiments in pseudoscalar photoproduction

Necessary and sufficient conditions are derived for three double polarisation measurements to complement cross section and single polarisation measurements in pseudoscalar meson photoproduction to enable amplitudes to be determined up to discrete ambiguities. Rules for choosing two further measurements to resolve the discrete ambiguities are given and practical applications of the rules to particular reactions are discussed.     

Evaluation of a contraceptive device with MR imaging.

The purpose of this investigation is to evaluate the positioning and to confirm the volume concept of the Lea's Shield diaphragm utilizing MR imaging. We evaluated the device in two women, one nulliparous and one multiparous. We were able to comprehensively evaluate the device in both patients and answer all questions regarding anatomical positioning and aspects pertaining to the morphology of the device relevant to its function. MRI may be effectively utilized to evaluate contraceptive devices and their relationship to adjacent anatomical structures. This may enhance the gynecologist's clinical assessment of its correct positioning and efficacy.