scholarly journals Special Issue “Natural Polymers and Biopolymers II”

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 112
Author(s):  
Sylvain Caillol
Keyword(s):  
Natural Resources ◽  
Special Issue ◽  
Natural Polymers ◽  
Biobased Polymers ◽  
Naturally Occurring

BioPolymers could be either natural polymers (polymer naturally occurring in Nature, such as cellulose or starch…), or biobased polymers that are artificially synthesized from natural resources [...]

scholarly journals Revisiting the Role of Institutions in Transformative Contexts: Institutional Change and Conflicts

2020 ◽  
Vol 12 (21) ◽  
pp. 9036 ◽  
Author(s):  
Dimitrios Zikos
Keyword(s):  
Natural Resources ◽  
Institutional Change ◽  
Political Science ◽  
Institutional Research ◽  
Special Issue ◽  
Institutional Reforms ◽  
Environmental Conflicts ◽  
Disciplinary Boundaries ◽  
Key Concepts

The study of conflicts over natural resources is neither governed by a coherent set of theories nor limited by strict disciplinary boundaries. Rather, it encompasses a multitude of conceptions grounded within a wide array of disciplines and epistemological assumptions concerning the links between institutional change and conflicts, often concluding in contradictory propositions. This article aims at providing conceptual guidance for the special issue, by reviewing institutional research with a particular focus on institutional change and associated conflicts and drawing some implications from transformative settings. More specifically, the paper explores certain propositions and concepts utilised by institutional economists to explain why conflicts persist despite institutional reforms explicitly or implicitly introduced to resolve them. The author revisits diverse cases from different regions to investigate key concepts related to institutional change and its implications on environmental conflicts associated to transformations, complementing this view from a political science perspective. The paper concludes by offering an overview of factors identified as instrumental in understanding the institutional change and conflict–cooperation continuum.

scholarly journals Editorial for Special Issue “Arctic Mineral Resources: Science and Technology”

Minerals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 192 ◽  
Author(s):  
Sergey Krivovichev
Keyword(s):  
Natural Resources ◽  
Future Development ◽  
Science And Technology ◽  
Mineral Resources ◽  
The Arctic ◽  
Arctic Zone ◽  
Special Issue ◽  
The Earth ◽  
The Future

The Arctic zone of the Earth is a major source of mineral and other natural resources for the future development of science and technology [...]

Global impacts of aflatoxin in maize: trade and human health

2015 ◽  
Vol 8 (2) ◽  
pp. 137-142 ◽  
Author(s):  
F. Wu
Keyword(s):  
Animal Health ◽  
Aflatoxin Contamination ◽  
Economic Effects ◽  
Economic Losses ◽  
Subsistence Farming ◽  
Global Level ◽  
Special Issue ◽  
Main Determinant ◽  
Naturally Occurring ◽  
Global Impacts

Maize is one of the most important agricultural commodities worldwide in terms of amounts produced, consumed, and traded. Hence, naturally occurring aflatoxin contamination in maize has important ramifications for both global trade and health. Aflatoxin is produced by certain species of the genus Aspergillus in a variety of food crops, including maize, peanuts, and tree nuts. Over 100 nations have aflatoxin regulations, which are intended to protect human and animal health, but also incur economic losses to nations that attempt to export maize and other aflatoxin-contaminated commodities. These economic effects must be balanced against the health protection afforded by the regulations. It is important to acknowledge that, even in nations that have aflatoxin regulations, many individuals consume maize that has undergone no regulatory inspection, especially in nations where subsistence farming is widespread. Hence, aflatoxin contamination, exposure, and lack of regulation can also contribute to adverse effects on trade and health worldwide. This review, part of a special issue on aflatoxin in maize, describes economic and health effects of aflatoxin in maize on a global level. It ends with a story of an intervention that reduced maize consumption in one population in China, which is likely the main determinant of the reduction in liver cancer mortality in that population over the last 30 years, from reduced aflatoxin exposure.

Yeast as Coupling Agent for Corn Filler in Tyre Tread Compound

2005 ◽  
Vol 21 (3) ◽  
pp. 231-242 ◽  
Author(s):  
S.L. Agrawal ◽  
S.K. Mandot ◽  
N. Mandal ◽  
S. Bandyopadhyay ◽  
R. Mukhopadhyay ◽  
...  
Keyword(s):  
Carbon Black ◽  
Natural Resources ◽  
Coupling Agent ◽  
Energy Efficient ◽  
Silane Coupling Agent ◽  
Rolling Resistance ◽  
Naturally Occurring ◽  
Polymer Filler ◽  
Silane Coupling

Tyre manufacturers are continually developing energy efficient, low rolling resistance tyres, using more and more naturally occurring materials, with minimum depletion of petroleum/natural resources. Of all the components of a typical tyre, the tread component contributes most to rolling resistance properties. So continuous efforts are in progress around the globe to develop suitable tread compounds in order to fulfil the above criteria with different filler combinations, including treated fillers. In the present study, the effect of a naturally occurring coupling agent, yeast, was investigated in the context of a corn – carbon black filler system, and the results were compared with those for corn powder treated with a silane coupling agent – carbon black system in a radial passenger tyre tread compound. The yeast increased polymer-filler interaction significantly by modifying the corn surface, giving rise to optimum properties for the tread compound.

scholarly journals Community, Natural Resources, and Sustainability: Overview of an Interdisciplinary and International Literature

2020 ◽  
Vol 12 (3) ◽  
pp. 1061
Author(s):  
Hua Qin ◽  
Martha Bass ◽  
Jessica D. Ulrich-Schad ◽  
David Matarrita-Cascante ◽  
Christine Sanders ◽  
...  
Keyword(s):  
Resource Management ◽  
Natural Resources ◽  
Natural Resource Management ◽  
Natural Resource ◽  
Future Research ◽  
Community Resources ◽  
Special Issue ◽  
Complete Understanding ◽  
Community Based ◽  
Meta Analyses

The Special Issue Community, Natural Resources, and Sustainability seeks to engage in an interdisciplinary and international dialogue on the interrelationships of society, natural resources, and sustainability at the community level. In addition to introducing the twelve research articles published in this collection, we provide an overview of the existing literature on community and natural resource management, mainly through a review of previous reviews and a bibliometric analysis. While this literature is dominated by studies on various aspects of community-based natural resource management, the present Special Issue showcases multiple thematic areas of research that collectively contribute to a more complete understanding of the community-resources-sustainability linkages. Our review also pinpoints important gaps in existing meta-analyses and bibliometric analyses. Promising directions for future research are highlighted.

scholarly journals Geoheritage and Geotourism Resources

Resources ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 80
Author(s):  
Nicoletta Santangelo ◽  
Ettore Valente
Keyword(s):  
Remote Sensing ◽  
Environmental Education ◽  
Natural Resources ◽  
Protected Areas ◽  
Rural Areas ◽  
Sustainable Tourism ◽  
Geological History ◽  
Special Issue ◽  
Geological Sciences

This Special Issue wants to outline the role of Geoheritage and Geotourism as potential touristic resources of a region. The term “Geoheritage” refers to a peculiar type of natural resources represented by sites of special geological significance, rarity or beauty that are representative of a region and of its geological history, events and processes. These sites are also known as “geosites” and, as well as archaeological, architectonic and historical ones, they can be considered as part of the cultural estate of a country. “Geotourism” is an emerging type of sustainable tourism, which concentrates on geosites, furnishing to visitors knowledge, environmental education and amusement. In this meaning, Geotourism may be very useful for geological Sciences divulgation and may furnish additional opportunities for the development of rural areas, generally not included among the main touristic attractions. The collected papers focused on these main topics with different methods and approaches and can be grouped as follows: (i) papers dealing with geosites promotion and valorisation in protected areas; (ii) papers dealing with geosites promotion and valorisation in non-protected areas; (iii) papers dealing with geosites promotion by exhibition, remote sensing analysis and apps; (iv) papers investigating geotourism and geoheritage from the tourists’ perspective.

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