Chemistry-Didactics-Ecology-Metrology最新文献_第3页

The Assessment of Heavy Metal Contamination of the Cultivated Soils in the Odra River Floodplain 奥德拉河泛滥平原农田土壤重金属污染评价

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2021-12-01 DOI: 10.2478/cdem-2021-0004

Aleksandra Michalak, P. Świsłowski, M. Rajfur

引用次数: 1

Pupils’ Preconceptions About Heat, Temperature and Energy 小学生对热量、温度和能量的预认知

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0005

Lenka Kramarová, Miroslav Prokša

{"title":"Pupils’ Preconceptions About Heat, Temperature and Energy","authors":"Lenka Kramarová, Miroslav Prokša","doi":"10.2478/cdem-2020-0005","DOIUrl":"https://doi.org/10.2478/cdem-2020-0005","url":null,"abstract":"Abstract This article is focused on finding out pupils’ preconceptions about heat, temperature and energy. As a research tool we used a didactic test with individual types of tasks about the concepts. A total of 122 respondents aged 12 to 14 participated in the research. The research sample consisted of two groups of pupils. One group consisted of pupils attending a school assigned for talented pupils, for simplicity they are referred as talented pupils. The second group consisted of pupils who do not attend this type of school, we marked them as “general population”. The number of respondents in the sample of talented pupils was 54. The number of respondents in the sample “general population” was 68 pupils. In the research we compared ideas about concepts heat, temperature and energy of talented pupils and pupils of the “general population”. We also compared talented pupils and pupils of the “general population” in solving of conceptual and algorithmic tasks in didactic test. We found out pupils of the age from 12 to 14 have misconceptions about the concepts. We also identified the misconceptions and the most common are also mentioned in this article.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"25 1","pages":"79 - 91"},"PeriodicalIF":0.4,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47683523","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

Conditions for Experimental Activities at Elementary and High Schools from Chemistry Teachers’ Point of View 从化学教师的角度看中小学实验活动的条件

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0006

M. Rusek, Kateřina Chroustová, M. Bílek, P. Skřehot, Z. Hon

引用次数: 6

Remediation of CO2 in Boudouard’s Reaction as an Example of Reversible Chemical Reaction Boudouard反应中CO2的修复——以可逆化学反应为例

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0007

E. Szostak, Ewa Odrowąż, N. Górska

{"title":"Remediation of CO2 in Boudouard’s Reaction as an Example of Reversible Chemical Reaction","authors":"E. Szostak, Ewa Odrowąż, N. Górska","doi":"10.2478/cdem-2020-0007","DOIUrl":"https://doi.org/10.2478/cdem-2020-0007","url":null,"abstract":"Abstract One of the fundamental elements of a scientist's work is the ability to lead observations of the phenomena that surround us and based on them making conclusions. These observations are conducted within the so-called scientific experiments. Lessons learned based on the results obtained in experiments allow researchers to better understand the essence of the phenomena occurring in the world around us. Drawing conclusions is not always easy. In order to achieve this skill, we must possess a well-established knowledge in the field of the phenomenon that interests us. The most striking example of how important skills are observation and drawing proper conclusions is the phenomenon of global climate warming. The main parameter influencing temperatures registered on Earth is the concentration of greenhouse gases in the atmosphere, and especially carbon dioxide created from combustion processes. A significant role in studies of the reduction of CO2 emissions plays chemists. To be sure that conducted by them experiments are optimally designed, it is necessary to ensure them with proper education already at the secondary school level. The main aim of this article was to conduct the study in order to explain chemical issues that create the greatest cognitive difficulties among students. The second aim of the article was to propose a chemical experiment to students that would allow them to find out more about the phenomena governing in the area of problematic issues. The proposed experiment is based on the concept of solubility equilibrium. Results of preliminary tests that have been carried out after applying this experiment on a small group of students, indicated their better understanding of the studied subject.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"25 1","pages":"101 - 111"},"PeriodicalIF":0.4,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43105586","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

Study on in vitro Toxicity of Biometal(II) Monensinates Against Rat Zajdela Liver Tumour 生物金属（Ⅱ）莫能酸盐对大鼠Zajdela肝癌的体外毒性研究

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0009

R. Alexandrova, T. Zhivkova, D. Ivanov, Boika Andonova-Lilova, L. Dyakova, Ivayla N. Pantcheva, P. Dorkov

引用次数: 1

Human Resources and R&D at the Institute for Nanomaterials, Advanced Technologies and Innovation (TUL) 纳米材料、先进技术与创新研究所（TUL）的人力资源和研发

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0003

Pavla Švermová, Alena Kabova, O. Starostina, Marketa Pankova

{"title":"Human Resources and R&D at the Institute for Nanomaterials, Advanced Technologies and Innovation (TUL)","authors":"Pavla Švermová, Alena Kabova, O. Starostina, Marketa Pankova","doi":"10.2478/cdem-2020-0003","DOIUrl":"https://doi.org/10.2478/cdem-2020-0003","url":null,"abstract":"Abstract Within the next few years, Europe’s economic paradigm will change fundamentally. Its manufacturing base will continue to shrink, and therefore future growth and social welfare will rely increasingly on knowledge-intensive industries and services, and ever more jobs will require a higher education qualification. Human resources are a core determinant of quality in higher education and research. Universities must therefore work to enhance their human potential, both qualitatively and quantitatively, by attracting, developing and keeping talent in teaching/research careers. Excellence may only emerge from a favourable professional environment based in particular on open, transparent and competitive procedures. Research and development (R&D) has proven to be a crucial factor in shifting the world’s technological frontiers, while at the same time facilitating new technological and scientific innovations. This paper will focus on R&D at the Institute for Nanomaterials, Advanced Technologies and Innovation at the Technical University of Liberec, Czech Republic. After a description of a literary search in the introduction, the specific real situation at this institute is mentioned, i.e. the number of submitted and solved national and international projects, statistics on research and development sources, and of course human resources at the institute. In the conclusion, the reader will be able to get a picture of how to increase the institute competitiveness in international collaboration.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"25 1","pages":"57 - 68"},"PeriodicalIF":0.4,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42338604","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

Water Quality and Ichthyofauna Habitat Conditions in Lake Czolnowskie (N-W Poland) Czolnowskie湖（波兰西北部）的水质和鱼类栖息地条件

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0008

A. Brysiewicz, P. Czerniejewski, Agnieszka Kozioł, Michał Rogacki, J. Dąbrowski

{"title":"Water Quality and Ichthyofauna Habitat Conditions in Lake Czolnowskie (N-W Poland)","authors":"A. Brysiewicz, P. Czerniejewski, Agnieszka Kozioł, Michał Rogacki, J. Dąbrowski","doi":"10.2478/cdem-2020-0008","DOIUrl":"https://doi.org/10.2478/cdem-2020-0008","url":null,"abstract":"Abstract Increasing anthropopressure affects natural ecosystems and may express itself in regional or spot contamination of water and soil environment. The quality of ground and surface waters depends to a large extent on drainage area management, where biogenic substances (i.e. nitrogen, phosphorus and potassium) are transported with surface run-offs to the environment. The article discusses results of studies on the drainage area of Lake Czolnowskie (Zachodniopomorskie Province). Studies covered physical and chemical assessment of soil conditions and water quality; additionally, fish was caught using two independent methods - gillnets and power generator (pursuant to CEN EN 14011 2003 and PN-EN 14011 2006). Results obtained confirm regular run-off of biogenic materials from the surface of farmed drainage area to Lake Czolnowskie. During the period of studies, the reservoir was exposed to i.e. reduction of water oxygen (3.56 mg/dm3) and permanently elevated level of general phosphorus (0.15-0.27 mg/dm3) and ammonium acid (0.16-0.27 mg/dm3), which degraded the quality of life for ichthyofauna inhabiting the lake.","PeriodicalId":41079,"journal":{"name":"Chemistry-Didactics-Ecology-Metrology","volume":"25 1","pages":"113 - 123"},"PeriodicalIF":0.4,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44772178","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

Determining Cellulolytic Activity of Microorganisms 微生物的纤维素酶活性测定

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0010

K. Grata

引用次数: 4

Lower-Secondary School Chemistry Textbooks’ Didactic Equipment 初中化学教材的教学装备

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0004

M. Rusek, Karel Vojíř, Šárka Šubová

引用次数: 7

Basic Multivariate Statistical Methods for Environmental Monitoring Data Mining: Introductory Course for Master Students 环境监测数据挖掘的多元统计方法基础硕士导论

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Chemistry-Didactics-Ecology-Metrology Pub Date : 2020-12-01 DOI: 10.2478/cdem-2020-0002

V. Simeonov

引用次数: 1