Chemistry-Didactics-Ecology-Metrology最新文献_第4页

Hydrogen - Some Historical Highlights 氢气-一些历史亮点

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0001

Z. Szydło

引用次数: 1

Molecular Models in Chemistry Education at University and Upper Secondary School - Structure of Amides 大中专化学教育中的分子模型——酰胺的结构

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0003

K. Kolář, R. Doležal, N. Karaskova, N. Maltsevskaya, Sarka Krizkova

{"title":"Molecular Models in Chemistry Education at University and Upper Secondary School - Structure of Amides","authors":"K. Kolář, R. Doležal, N. Karaskova, N. Maltsevskaya, Sarka Krizkova","doi":"10.2478/cdem-2019-0003","DOIUrl":"https://doi.org/10.2478/cdem-2019-0003","url":null,"abstract":"Abstract Molecular models derived from results of quantum-chemical calculations present an important category of didactic instruments in chemistry education in upper secondary school and, particularly, at university. These models can be used especially as tools for supporting the students’ understanding by visual learning, which can adequately address complexity of many chemical topics, incorporate appropriate didactic principles, as well as utilize the benefits brought up by the actual information technology. The proposed molecular models are non-trivial examples of didactic application of computational chemistry techniques in illustration of electron interactions in amidic group, namely the interaction of the free electron pair on the nitrogen atom with the carbonyl group and also the interaction of atoms in the amide group with other surrounding atoms in the molecule. By these molecular models it is possible to explain acid-base properties of amides applying knowledge of electron density distribution in the molecules and the resulting electrostatic potential. Presentation of the structure and properties of the amides within education is important also for the reason that amidic functions are involved in many important natural substances (e.g. proteins, peptides, nucleic acids or alkaloids), synthetic macromolecular substances (e.g. Silon) or pharmaceutical preparations (e.g. paracetamol). Molecular models then serve to support better understanding of the structure of these substances and, in relation to it, their properties.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"24 1","pages":"45 - 51"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46154849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomonitoring of Atmospheric Aerosol with the use of Apis mellifera and Pleurozium schreberi 利用蜜蜂和白蜡菌对大气气溶胶进行生物监测

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0009

Z. Konopka, P. Świsłowski, M. Rajfur

{"title":"Biomonitoring of Atmospheric Aerosol with the use of Apis mellifera and Pleurozium schreberi","authors":"Z. Konopka, P. Świsłowski, M. Rajfur","doi":"10.2478/cdem-2019-0009","DOIUrl":"https://doi.org/10.2478/cdem-2019-0009","url":null,"abstract":"Abstract The aim of the carried out research was to assess atmospheric aerosol pollution levels in the area of three apiaries located in the Opole Province and to analyse heavy metals pollution in bee honey and western honey bees. Pleurozium schreberi moss was used in analysing atmospheric aerosol pollution with the active biomonitoring method, whereas heavy metals levels were determined with flame atomic absorption spectrometry method (F-AAS). Relative Accumulation Factors (RAF) were used in determining increases of analytes concentrations in the moss samples. As a result of the carried out study, the following conclusions have been reached: mosses are good bioindicators of environment pollution thanks to their sorption qualities, similarly to honey bees, which are a bioindicator of environment pollution. According to the Commission Regulation of European Union of 2015 regarding the maximum levels of lead in certain foods (honey), it should not exceed 0.1 mg/kg. On the basis of the carried out study it can be stated that the concentration of this analyte in the analysed honey was below the limit of quantification of the applied analytical method.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"24 1","pages":"107 - 116"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43637851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Isotherm Studies of Malachite Green Removal by Yarn Processing Sludge-Based Activated Carbon 纱线污泥基活性炭去除孔雀绿的等温研究

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0011

S. Tang, M. Zaini

引用次数: 3

History of Fire 火的历史

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0002

Z. Szydło

引用次数: 1

Importance of Teachers’ Beliefs in Development of Scientific Literacy 教师信念对科学素养培养的重要性

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0006

Katarína Kotuľáková

{"title":"Importance of Teachers’ Beliefs in Development of Scientific Literacy","authors":"Katarína Kotuľáková","doi":"10.2478/cdem-2019-0006","DOIUrl":"https://doi.org/10.2478/cdem-2019-0006","url":null,"abstract":"Abstract Science teachers communicate curricula goals to their students, prepare teaching situations and lead their students through them in order to learn science. The purpose of this study was to identify the beliefs of teachers about teaching and learning, specifically, what the teachers focus on, how they comprehend knowledge and their role in the process of learning since they can promote or hold back development of scientific literacy. Q methodology was used to investigate the beliefs of 65 science teachers by having them rank and sort a series of 51 statements. Factor analysis was used to identify identical patterns. The analysis showed that the teachers held four types of dominant beliefs about the effectiveness of science instruction and some common feature which have potential to influence educational process. Teachers concentrate on covering the content even if they declare the importance of personal construction, feel responsible for students’ learning and its outcomes. Despite stressing the activity of the students, the teachers did not emphasize particular science process skills and scaffolding process. The findings of the study suggest that systematic trainings focused on the nature of science and the scaffolding process would be beneficial for teachers in all identified factors.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"24 1","pages":"77 - 87"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46744916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Environmental History of the Twentieth Century. An Introductory Didactic Course 20世纪环境史。入门教学课程

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0001

V. Simeonov

引用次数: 2

Didactic Capacity of Selected Czech and Russian Organic Chemistry Textbooks 捷克和俄罗斯有机化学教材的教学能力

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0005

N. Karaskova, R. Doležal, N. Maltsevskaya, K. Kolář

引用次数: 2

Didactical Principles of Environmental Monitoring 环境监测教学原则

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0008

V. Simeonov

引用次数: 1

Changes in Connotative Perception of Notions from the Area of Science Education at a Science Camp 从科学营的科学教育领域看观念内涵感知的变化

IF 0.4

Chemistry-Didactics-Ecology-Metrology Pub Date : 2019-12-01 DOI: 10.2478/cdem-2019-0004

Petra Ivánková

{"title":"Changes in Connotative Perception of Notions from the Area of Science Education at a Science Camp","authors":"Petra Ivánková","doi":"10.2478/cdem-2019-0004","DOIUrl":"https://doi.org/10.2478/cdem-2019-0004","url":null,"abstract":"Abstract The main reason of children’s low interest in the study of natural science subjects is the inability to link the knowledge acquired at school to subjects such as chemistry or physics with real life outside the classroom. Their ideas about the scientists are often mistaken and glamorized. With the effort of the Vebor camp, these ideas are corrected and shifted towards reality. The research was focused on the perception of children of selected concepts before and after the camp. There are many researches fields dealing with science camps or teaching outside of school. Our research has used the semantic differential method, which we have seen only sporadically in research on this subject. The results of the research are mostly positive and show that the scientific camp has a positive impact on the understanding and perception of children of selected aids from the area of science and education. Very interesting are the results, for example, when the term of “teacher”, where the connotative perception of the term has changed from very negative to highly positive with statistical significance of 99 %. Many of the more interesting results are presented in the article.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"24 1","pages":"53 - 60"},"PeriodicalIF":0.4,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43136775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1