Reform of Teaching Practice of Modern Instrumental Analysis in Biotechnology Programs

Through the online and offline practical reform of the Modern Instrumental Analysis course of biotechnology majors from teaching content,teaching method,teaching demonstration to teaching effect,the traditional single offline lecture is transformed into diversified and interactive modern teaching.The practical reform enriches and optimizes the course content,perfects and improves the course assessment system,and improves the teaching quality.It achieves the student-centered and application-oriented teaching goal,and also provides reference for further cultivating high-quality applied talents.

Explorations in Experimental Teaching of Traditional Chinese Medicine Instrumental Analysis Based on the Training of Innovative Talents

Training students’innovative thinking is an essential task of talent training in colleges and universities,and how to train students’innovativeness in experimental teaching is the focus of modern education.Experimental lesson of instrumental analysis is an important section for integrating students’theories and practices,in view of the characteristics of traditional Chinese medicine major and instrumental analysis lesson,this lesson orientates opening up students’innovative thinking,explores the way of improving students’innovative ability in an all-around way through reforming the experimental teaching of instrumental analysis according to the teaching objectives.

Preliminary Application of Combinatorial Measurement and Regression Analysis Method to High Precision Instrumental Analysis

With determination micro-Fe by 1, 10-phenanthroline spectrophotometry for example, they are systematically introduced the combinatorial measurement and regression analysis method application about metheodic principle, operation step and data processing in the instrumental analysis, including: calibration curve best linear equation is set up, measurand best linear equation is set up, and calculation of best value of a concentration. The results showed that mean of thrice determination , s = 0 μg/mL, RSD = 0. Results of preliminary application are simply introduced in the basic instrumental analysis for atomic absorption spectrophotometry, ion-selective electrodes, coulometry and polarographic analysis and are contrasted to results of normal measurements.

Research on the Teaching Reform of Polymer Materials Foundation Course-Based on the Case Analysis Method

In today's education and teaching reform,the traditional teaching method in the teaching of polymer materials has been gradually replaced with various new teaching methods.Among them,the case analysis method is a very efective teaching method,which has been applied to the teaching of polymer materials.Through example-based teaching,students 125 participation can be effectively improved,and their theoretical knowledge can be fully utilized.This would have a positive role in promoting the improvement of students'knowledge system and their learning ability.In regard to this,this article analyzes the application of case analysis in the teaching of polymer materials so as to improve its efficiency and quality.

Foreign Landscape Architecture History Teaching by Introducing Three-dimensional Graphic Analysis:A Case Study of Italian Renaissance Gardens

Taking contents of Italian Renaissance gardens in the course Foreign Landscape Architecture History as an example,this paper introduces case teaching method and analyzes application of three-dimensional graphic analysis method in case teaching in detail,aiming at typical cases of Italian Renaissance gardens,namely,Villa Medici,Fiesole and Villa d’Este,Tivoli.Three-dimensional graphic analysis can help students form intuitive feeling of terrain and space,further understand the typical gardening techniques of foreign gardens,so as to improve the teaching effect of landscape architecture history course.

Analysis on the Application of Translation and Communication in German Teaching

Economic globalization deepens the international communication,in addition to be known as English,the language of other ethnic has been internationally known,German is one of them,as an international communication language,is between people began to seriously,along with the increase in international communication between,the cultivation of the German people gradually on the agenda,in German,produced a variety of teaching methods in the teaching process,including translation method and communicative approach,these two kinds of application of teaching methods,teaching German further development.Based on this,this paper expounds the advantages and disadvantages of the translation method and the communicative approach respectively,as well as the application limitations and improvement strategies in German teaching,for the reference of relevant personnel.

A Comparison of Weighing Methods Prior to Fusion Preparing Iron Samples for XRF Analysis

Sample preparation by fusion for XRF analysis is all about knowing the exact weights of the sample and the flux (sample-to-flux ratio). The whole analytical chain, including the weighing step in sample preparation prior to fusion, is of crucial importance to get precise and accurate x-ray fluorescence (XRF) results. Consequently, the weighing method will affect the quality of the analytical results given by the spectrometer. In this study, the effects of different weighing methods on the precision (RSD) of the obtained XRF results are compared to determine the best weighing method for sample preparation by fusion in terms of comparable precisions in the XRF results.

Photometric solution and period analysis of the contact binary system AH Cnc

Photometric observations of AH Cnc, a W UMa-type system in the open cluster M67, were car- fled out by using the 50BIN telescope. About 100h of time-series/3- and V-band data were taken, based on which eight new times of light minima were determined. By applying the Wilson-Devinney method, the light curves were modeled and a revised photometric solution of the binary system was derived. We con- firmed that AH Cnc is a deep contact （f = 51%）, low mass-ratio （q - 0.156） system. Adopting the distance modulus derived from study of the host cluster, we have re-calculated the physical parameters of the binary system, namely the masses and radii. The masses and radii of the two components were estimated to be respectively 1.188（4-0.061） Me, 1.332（4-0.063） RQ for the primary component and 0.185（4-0.032） Me, 0.592（4-0.051） Re for the secondary. By adding the newly derived minimum timings to all the available data, the period variations of AH Cnc were studied. This shows that the orbital period of the binary is con- tinuously increasing at a rate of dp/dt = 4.29 x 10-10 d yr-1. In addition to the long-term period increase, a cyclic variation with a period of 35.26 yr was determined, which could be attributed to an unresolved tertiary component of the system.

Optimal site selection for an optical-astronomical observatory in Pakistan using Multicriteria Decision Analysis

An astronomical observatory is the core component of any astronomical research facility that connects astronomers with their lab: the Cosmos. The research quality of an astronomical facility is rooted in the precision of data, collected by its observatory. For optimal performance, an observatory is sited while considering certain astronomical, environmental, geological and social parameters. This study aims to identify the potential sites in Pakistan for locating an optical-astronomical observatory using the Multicriteria Decision Analysis(MCDA) technique. The study uses the Analytic Hierarchy Process(AHP) for deriving the influence weights of nine evaluation criteria: Photometric Night Fraction;Night-time Sky Brightness;Sky Transparency;Aerosol Concentration;Altitude;Terrain Slope;Accessibility;Seismic Vulnerability;and Landuse/Land Cover. On the basis of experts’ opinions and previous studies, the evaluation criteria have been ordered in two possible preference sequences for identifying their influence weights with respect to each other for taking part in MCDA. Consequently, the process of MCDA identified certain areas with respect to each preference sequence, whereas some areas were found to be suitable according to both preference sequences. The study synchronizes the required eclectic data into an evaluation matrix that augments the process of astronomical site selection. In the future, this study will be useful for astronomical societies and for furthering astronomical research in the country.

The influence of the Insight-HXMT/LE time response on timing analysis

The LE is the low energy telescope that is carried on Insight-HXMT.It uses swept charge devices(SCDs)to detect soft X-ray photons.LE’s time response is caused by the structure of the SCDs.With theoretical analysis and Monte Carlo simulations we discuss the influence of LE time response(LTR)on the timing analysis from three aspects:the power spectral density,the pulse profile and the time lag.After the LTR,the value of power spectral density monotonously decreases with the increasing frequency.The power spectral density of a sinusoidal signal reduces by a half at frequency 536 Hz.The corresponding frequency for quasi-periodic oscillation(QPO)signals is 458 Hz.The root mean square(RMS)of QPOs holds a similar behaviour.After the LTR,the centroid frequency and full width at half maxima(FWHM)of QPOs signals do not change.The LTR reduces the RMS of pulse profiles and shifts the pulse phase.In the time domain,the LTR only reduces the peak value of the cross-correlation function while it does not change the peak position;thus it will not affect the result of the time lag.When considering the time lag obtained from two instruments and one among them is LE,a 1.18 ms lag is expected caused by the LTR.The time lag calculated in the frequency domain is the same as that in the time domain.

Spectral deconvolution analysis on Olivine-Orthopyroxene mixtures with simulated space weathering modifications

Olivine and pyroxene are important mineral end-members for studying the surface material compositions of mafic bodies.The profiles of visible and near-infrared spectra of olivine-orthopyroxene mixtures systematically vary with their composition ratios.In our experiments,we combine the RELAB spectral database with new spectral data obtained from some assembled olivine-orthopyroxene mixtures.We found that the commonly-used band area ratio(BAR,Cloutis et al.)does not work well on our newly obtained spectral data.To investigate this issue,an empirical procedure based on fitted results by a modified Gaussian model is proposed to analyze the spectral curves.Following the new empirical procedure,the endmember abundances can be estimated with a 15%accuracy with some prior mineral absorption features.In addition,the mixture samples configured in our experiments are also irradiated by pulsed lasers to simulate and investigate the space weathering effects.Spectral deconvolution results confirm that low-content olivine on celestial bodies is difficult to measure and estimate.Therefore,the olivine abundance of space weathered materials may be underestimated from remote sensing data.This study may be utilized to quantify the spectral relationship of olivine-orthopyroxene mixtures and further reveal their correlation between the spectra of ordinary chondrites and silicate asteroids.

Data processing and error analysis for the CE-1 Lunar microwave radiometer

The microwave radiometer （MRM） onboard the Chang＇ E-1 （CE-I） lu- nar orbiter is a 4-frequency microwave radiometer, and it is mainly used to obtain the brightness temperature （TB） of the lunar surface, from which the thickness, temperature, dielectric constant and other related properties of the lunar regolith can be derived. The working mode of the CE-1 MRM, the ground calibration （including the official calibration coefficients）, as well as the acquisition and processing of the raw data are introduced. Our data analysis shows that TB increases with increasing frequency, decreases towards the lunar poles and is significantly affected by solar illumination. Our analysis also reveals that the main uncertainty in TB comes from ground calibration.

Evaluation and Analysis on the Vocational College English Coursebook English For Careers 1

The purpose of the paper is to evaluate and analysis on the vocational English coursebook English for Careers 1. EFL(English as a foreign language) materials and textbooks are important factors in many language programs and making judgments about their needs meticulous book evaluation. In china, different coursebooks are used for teaching general and technical English to students at the vocational colleges. Despite the great use of these textbooks and dominance of post method in EFL classrooms,it is not yet known to what extent the principles of particularity, possibility, and practicality are observed in the currently practiced EFL coursebooks at the vocational colleges. The main objectives of the present paper are to evaluate and analyze the feature of the course to figure out whether the principles of teaching method have been applied in these coursebooks or not.

多元混合式教学在仪器分析实验课程中的实践

仪器分析实验课程是化学相关专业实践性与应用性极强的核心实验课程之一。在“双一流”建设的大背景下,针对目前仪器分析实验教学存在的问题,从教学模式、教学内容和教学方法三方面进行改革,打造了线上线下相结合,常规实验、虚拟仿真实验和自主创新设计实验相结合,翻转课堂和问题导向学习法相结合的多元混合式教学课程体系。教学实践证明,这种新型的教学课程体系有利于激发学生的学习兴趣与主动性,引导学生内化知识,培养分析和解决问题的高阶思维与综合能力,提高教学效率,优化教学效果。

创新人才培养目标下仪器分析“教研赛”教学模式研究

依照创新人才培养目标,针对传统仪器分析教学中存在的弊端,以竞赛为依托,将科研前沿引入课堂,以线上教学为纽带,开展“教研赛”融合式教学模式改革探索。该教学模式着重培养学生的创新意识、创新思维、创新能力,以及综合分析问题、解决问题的能力;同时,该教学模式也促进理论与实验教学的衔接,形成“虚实结合、理实一体化”的教学体系。

仪器分析实验课程思政案例设计与实践——以青蒿素的提取与结构鉴定的探究实验为例

中医药文化被喻为中华优秀传统文化的璀璨明珠,是中华传统文化的重要组成和典型代表。而作为抗疟明星的中医药青蒿素来源于天然产物,因此,天然产物中的青蒿素的提取和结构鉴定显得十分必要。课程团队结合课程特点,将青蒿素的提取和结构鉴定引入实验教学并进行课程思政教学案例设计。以此项目为载体,培养学生自主查阅文献、设计实验方案和运用仪器分析技术表征分子结构的科学素养。该教学案例的建立实施有助于教师充分挖掘课程中的思政元素,激发学生的学习兴趣,培养其自主创新意识,增强爱国情怀和民族文化自信,取得了良好的课程思政教学示范效果。

授人以鱼和渔:仪器分析实验自主设计实验及思政元素融入

为适应现代教育理念及国家对创新型人才的需求,改革传统实验教学模式并激发学生的自主创新意识,在传统仪器分析实验教学基础上探索和构建以学生为主体、以创新能力培养为中心的自主设计实验教学模式。课程在夯实基础和拔高创新方面取得了平衡,同时拓展了课程思政的范畴,如以学生为中心的自主设计实验模式提升了学生学习主动性,课程高阶性、创新性显著提高,授课教师在更多方面以身作则,示范了严谨的科学态度,并倡导了积极的科学探索态度。通过自主设计实验的开展,学生的基础知识、学习兴趣、实验技能、创新能力等都得到了显著提升,建立了有效的仪器分析学习模式。

问题探索与实验研究融合任务导向教学法在仪器分析教学中的改革实践

仪器分析是化学及相关专业的主干核心课程,为了适应学科发展需要,对仪器分析教学方法进行改革与实践。该课程采用任务导向教学模式,并尝试与问题探索和研究实验相融合,通过设计特定情景,使每章知识点以层层递进的方式出现,以最大程度地调动学生的学习兴趣和积极性;完成学习内容后再进行知识总结升华,并完成问题探索和实验研究,实现融会贯通,以达到较好的全面提升效果。

新工科背景下融合创新模式的仪器分析实验教学改革探索

在新工科背景下,为推进融合创新型人才培养,围绕“仪器分析”实验教学现状和存在问题进行了分析,充分利用“仪器分析”课程多学科交叉性、前沿性和实用性强等特点,从教学条件、教学内容、教学方法和课程考核评价等多方面开展了教学改革探索,增强了学生的学习兴趣,提高了自主学习意识。更加注重学生综合素质的培养,提升融合创新能力,旨在培养实践能力强、创新能力强、具备国际竞争力的高素质复合型新工科人才。

多模态话语分析理论下大学日语词汇教学研究

随着信息技术的发展,基于系统功能语言学的多模态话语分析理论得到广泛应用。近年来,国内众多学者将该理论与外语教学相结合开展多方面的研究。该文从多模态话语分析理论着手,归纳大学日语词汇在教学中存在的问题,分析该理论应用到教学中的意义,同时详细阐述该理论在教学中的具体实践方法,最终提出该理论给日语教学带来的启示。