<abstract xmlns="http://www.w3.org/1999/xhtml">The amount of used and worn out tires around the world reaches about 10 million tons. Rubber introduction to the environment in this shape is connected with its pollution, caused by tires’ chemical composition, which, apart from synthetic and natural rubber, contain soot as a filler, plasticizers having some amounts of polycyclic aromatic hydrocarbons and helping substances: activators, accelerator of vulcanization, cross-link means and homogenizers. The most important activator is zinc oxide. The aim of the conducted studies was to determine the influence of rubber rag added to the subsoil on the amount of yield, physiological state and the amount of taken zinc by maize (<italic>Zea mays</italic>). It was found that the rubber rag introduced into the soil caused an increase in the yield of maize and the plants growing on the soil with the highest amount of rubber rag showing higher efficiency photosynthetic apparatus than others. The zinc content in the aboveground parts of maize increased with the increase of rubber rag in the soil.</abstract>

Institute of Technical Sciences East European State University in Przemyśl

Department of Industrial and Materials Chemistry, Faculty of Chemistry

Maize (<italic>Zea mays</italic>) reaction in response to rubber rag additive into the soil

<abstract xmlns="http://www.w3.org/1999/xhtml">Lubricants that are based on vegetable oils and other renewable resources are the subject of many research studies and can be used in various applications, especially in the food industry, which is characterized by the high quality requirements related to the necessity to develop biodegradable lubricants that are environmentally friendly and do not contain harmful components and are safe to use for people. The objective of the described research was to obtain a base oil with a certain viscosity, which is higher than the viscosity of the initial vegetable oil, and certain lubricating properties. The initial oil derived from <italic>Crambe abyssinica</italic> was subjected to oxidation in the presence of N-hydroxyphthalimide with or without supercritical CO2 as a solvent. As a final result of this study, base oils meeting the viscosity requirements and having high biodegradability were obtained. The Raman spectra of the modified vegetable oils were evaluated and they were used for the initial assessment of the composition and the evaluation of the presence of harmful chemical compounds.</abstract>

The use of modified vegetable oil from Crambe abyssinica as a lubricant base for the food industry

<abstract xmlns="http://www.w3.org/1999/xhtml">The article presents the results of research on the modification of Epidian 5 epoxy resin by introducing natural modifiers. It's easy accessibility and biodegradability has a positive effect on environmental protection, cost-effectiveness of the process, useful and strength properties of composites. Still looking for the best solutions in the production of epoxy composites combining these features, we have attempted to compare and select the most optimal natural modifier. The epoxy resin was modified with collagen, hemp fibres, cellulose from pepper extraction residues. The amount of amine hardener suggested by the manufacturer was added to the composition. Each composition was cured at room temperature for 24 hours and then cured at 80°C for 3 hours. The prepared composites were subjected to impact assessment additions for mechanical properties, impact strength, three-point bending strength, critical stress intensity factor and gel time.</abstract>

University of Technology and Humanities in Radom

Faculty of Chemical Engineering and Commodity Science

The modification of an epoxy resin by natural plant materials

<abstract xmlns="http://www.w3.org/1999/xhtml">The paper looks at the ineffectiveness of climate protection undertaken by the United Nations Framework Convention on Climate Change (UNFCCC). Despite the emission reduction measures commenced by some countries, the global emission of carbon dioxide has increased more than 40% since the adoption of the UNFCCC. The most important reason of the catastrophe is the so-called <xref ref-type="bibr" rid="j_oszn-2020-0004_ref_001_w2aab3b7c20b1b6b1ab2ab1Aa">Berlin Mandate (1995)</xref>, which exempts most of the countries in the world – including China that became the largest emitter in 2006 – from taking any binding commitments to reduce emissions. The <xref ref-type="bibr" rid="j_oszn-2020-0004_ref_010_w2aab3b7c20b1b6b1ab2ac10Aa">Paris Agreement (2015)</xref> has been the first attempt to overcome the failure. There are a number of economic reasons why the protection process has not been successful so far. ‘Carbon leakage’ caused by the fact that most countries do not have binding commitments implies that emission from economies that impose restrictions moves to where it is not constrained. This calls for a global agreement on emission reduction. Such a global agreement requires recognition of the fact that climate protection is a public good. It is surprising that those UNFCCC signatories, who are likely to be hit by the lack of protection most acutely, hesitate to adopt effective provisions.</abstract>

Economics of climate change

AHEAD OF PRINT

Volume 34 (2023): Issue 4 (December 2023)

Volume 34 (2023): Issue 3 (September 2023)

Volume 34 (2023): Issue 2 (June 2023)

Volume 34 (2023): Issue 1 (March 2023)

Volume 33 (2022): Issue 4 (December 2022)

Volume 33 (2022): Issue 3 (September 2022)

Volume 33 (2022): Issue 2 (June 2022)

Volume 33 (2022): Issue 1 (March 2022)

Volume 32 (2021): Issue 4 (December 2021)

Volume 32 (2021): Issue 3 (September 2021)

Volume 32 (2021): Issue 2 (June 2021)

Volume 32 (2021): Issue 1 (March 2021)

Volume 31 (2020): Issue 4 (December 2020)

Volume 31 (2020): Issue 3 (September 2020)

Volume 31 (2020): Issue 2 (June 2020)

Volume 31 (2020): Issue 1 (March 2020)

Volume 30 (2019): Issue 4 (December 2019)

Volume 30 (2019): Issue 3 (September 2019)

Volume 30 (2019): Issue 2 (June 2019)

Volume 30 (2019): Issue 1 (March 2019)

Volume 29 (2018): Issue 4 (December 2018)

Volume 29 (2018): Issue 3 (September 2018)

Volume 29 (2018): Issue 2 (June 2018)

Volume 29 (2018): Issue 1 (March 2018)

Volume 28 (2017): Issue 4 (December 2017)

Volume 28 (2017): Issue 3 (September 2017)

Volume 28 (2017): Issue 2 (June 2017)

Volume 28 (2017): Issue 1 (March 2017)

Volume 27 (2016): Issue 4 (December 2016)

Volume 27 (2016): Issue 3 (September 2016)

Volume 27 (2016): Issue 2 (June 2016)

Volume 27 (2016): Issue 1 (March 2016)

Volume 26 (2015): Issue 4 (December 2015)

Volume 26 (2015): Issue 3 (September 2015)

Volume 26 (2015): Issue 2 (June 2015)

Volume 26 (2015): Issue 1 (March 2015)

Volume 25 (2014): Issue 4 (December 2014)

Volume 25 (2014): Issue 3 (September 2014)

Volume 25 (2014): Issue 2 (June 2014)

Volume 25 (2013): Issue 1 (March 2013)

Volume 24 (2013): Issue 4 (December 2013)

Volume 24 (2013): Issue 3 (September 2013)

Volume 24 (2013): Issue 2 (July 2013)

Volume 24 (2013): Issue 1 (May 2013)

Environmental Protection and Natural Resources

Original Journal Version : Electronic ISSN 2353-8589  The journal OCHRONA ŚRODOWISKA I ZASOBÓW NATURALNYCH / ENVIRONMENTAL PROTECTION AND NATURAL RESOURCES is published by Institute of Environmental Protection - National Research Institute.Between 1990-2012 the original version of the journal was published in paper format - ISSN 1230-7831.  Publication of the article in the journal is payable by its authors. The total cost of publishing the article in 2023 is: PLN 2,940 + 23% VAT (PLN 3,616.20) for the article.  Employees of the Institute of Environmental Protection - National Research Institute (owner of the journal) are exempt from fees for the article.   The journal ENVIRONMENTAL PROTECTION AND NATURAL RESOURCES is a publication which addresses the issues of broadly understood environmental protection and publishes research and review papers. All these articles and papers are peer-reviewed. All submited artciles and review papers are reviewed by at least two independent reviewers through a process of double-blind peer review. It means that neither the authors nor the reviewers know the identity of each other.  Interdisciplinary studies published by specialists in various fields present reciprocal relationships between the reactions taking place in the environment which are connected with natural element cycle and at the same time reflect both natural processes and human impacts. Themes of the works also concern socio-economic and technical issues at the UE, national, regional and local levels in the context of sustainable development. The main aim of the journal is to promote high level research in all aspects of environment and natural resources protection.   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Environmental Protection and Natural Resources

Volume 31 (2020): Issue 1 (March 2020)

Maize (Zea mays) reaction in response to rubber rag additive into the soil

The use of modified vegetable oil from Crambe abyssinica as a lubricant base for the food industry

The modification of an epoxy resin by natural plant materials

Economics of climate change

Wyszukiwanie

Wszystkie tomy i zeszyty w tym czasopiśmie