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A New Open Access Journal of Marine Science and Engineering
2013
Anthony S. Clare
The oceans cover approximately 71% of the Earth’s surface and contain more than 97% of the planet’s water, representing over 100 times more liveable volume than the terrestrial habitat. Approximately fifty percent of the species on the planet occupy this ocean biome, much of which remains unexplored. The health and sustainability of the oceans are threatened by a combination of pressures associated with climate change and the ever-increasing demands we place on them for food, recreation, trade, energy and minerals. The biggest threat, however, is the pace of change to the oceans, e.g., ocean acidification, which is unprecedented in human history. Consequently, there has never been a greater need for the rapid and widespread dissemination of the outcomes of research aimed at improving our understanding of how the oceans work and solutions to their sustainable use. It is our hope that this new online, open-access Journal of Marine Science and Engineering will go some way to fulfilling this need. [...]
اظهر المزيد [+] اقل [-]A New Open Access Journal of Marine Science and Engineering
2013
Anthony Clare
The oceans cover approximately 71% of the Earth’s surface and contain more than 97% of the planet’s water, representing over 100 times more liveable volume than the terrestrial habitat. Approximately fifty percent of the species on the planet occupy this ocean biome, much of which remains unexplored. The health and sustainability of the oceans are threatened by a combination of pressures associated with climate change and the ever-increasing demands we place on them for food, recreation, trade, energy and minerals. The biggest threat, however, is the pace of change to the oceans, e.g., ocean acidification, which is unprecedented in human history. Consequently, there has never been a greater need for the rapid and widespread dissemination of the outcomes of research aimed at improving our understanding of how the oceans work and solutions to their sustainable use. It is our hope that this new online, open-access Journal of Marine Science and Engineering will go some way to fulfilling this need. [...]
اظهر المزيد [+] اقل [-]The EBB and flow of US coal research 1970–2010 with a focus on academic institutions
2013
Mathews, Jonathan P. | Miller, Bruce G. | Song, Chunshan | Schobert, Harold H. | Botha, Francois | Finkleman, Robert B.
There has been a remarkable rise and fall in the frequency of coal science related journal publications from US entities. There has been a passing of the mantle from the US to China as the leading nation for English-language coal journal articles. An ISI Web of Knowledge (using the Web of Science database) evaluation of journal articles with “coal” in the title (in English-language journals) for the periods 1970–2010 and 2000–2010 was used as an approach to evaluate the historically active and currently active research centers in coal science. This approach underestimates the contributions but provides a basis for unbiased comparisons. Contributions were broken down by research institutions and by countries of contributing authors using analysis tools within ISI Web of Knowledge webpage. The United States has 30% of the publications between 1970 and 2010, with Japan contributing 7.8% and the People’s Republic of China 7.5%. England, Australia, India, Canada, Poland, Spain, Germany, and France contributed between 5% and 2% each. However, China has been the leading country for coal title publications since 2006. The peak publication year for the US was the early 1980s. A decline in US funding opportunities in basic research resulted in multiple once-active coal research centers to focus their efforts elsewhere. This paper focuses on the academic contributions to coal research in the United States and identifies centers that are still active and their focus areas. The leading academic institutions publication records were evaluated using Wordle to visually determine research focus areas through word frequency analysis of the journal article titles. The Wordle analysis and scanning of article titles determined areas of specialty for the various universities and other institutions. Active authors (for the period of analyses) were also determined using this approach. Among the US academic entities, the leading institutions (by quantity of journal articles) were The Pennsylvania State University (Penn State), Kentucky, West Virginia, Southern Illinois at Carbondale, University of Illinois, MIT, Utah, Brigham Young, Pittsburgh, Ohio State, Virginia Tech, Wyoming, Auburn, Carnegie Mellon, North Dakota, Iowa, California at Berkeley, Tennessee, Texas, Purdue, Texas A&M, Missouri, Georgia, and Western Kentucky. Of these, about half are still “active” in “coal science” as defined as 15 coal science publications (by this search approach) between 2000 and 2010, where the focus is science and engineering research on coal, but does not include coal-related areas such a post-combustion pollution control or the various catalytic interaction of coal-derived synthesis gas.
اظهر المزيد [+] اقل [-]Editorial
2013
Christopher W Anderson
Around the world there is growing appreciation of the status of productive land as one of the planet’s most important natural assets. The extent to which land can support primary production is linked to landquality and this is defined by a range of chemical, physical and biological parameters. Sustaining these parameters is essential in the context of feeding a global population that exceeded 12 billion people in 2012. Where the productive status of land is impaired, then this land can be considered degraded. Degradation can result from poor land management, industrial land use, or as a consequence of the discharge of contaminants into soil. Degraded land is often synonymous with mining lands, especially in the developing world where environmental protection is often not a priority. Indonesia is perhaps one country where the conflict between population, economic development and land degradation is very apparent. Indonesia is the world’s fourth most populous country, yet it is the world’s 15th-largest country in terms of land area[1]. Indonesia has some of the world’s most pristine rainforest, yet also has the world’s most populous island (Java)[2]; volcanic activity has endowed Indonesia with fertile soils that have historically supported high levels of agricultural productivity. Indonesia’s economy has been a strong performer throughout the current decade, although poverty is widespread, especially in eastern Indonesia. Economic development and the exploitation of natural resources have seen significant pressure on land throughout the archipelago.Land degradation is today a major concern. In 2012, the International Research Centre for the Management of Degraded and Mining Lands (IRC-MEDMIND) was officially opened during a ceremony at the University of Brawijaya, Malang, Indonesia. The Centre is a collaborative effort between The University of Brawijaya, The University of Mataram (Indonesia), Massey University (New Zealand) and the Institute of Geochemistry of the Chinese Academy of Sciences (China). The Centre has a clear objective: to ‘translate research outcomes into practices that will lead to the proper management of degraded and mining lands through working closely with communities, government, industry and NGOs.’ The Centre is working on the subject of artisanal and small-scale mining as a key focus area. Artisanal gold mining on the Indonesian islands of Lombok and Sumbawa is today releasing mercury and cyanide into the environment. The discharge of contaminants and associated land degradation is affecting human health and food safety. To support the Centre’s work, IRC-MEDMIND has created the Journal of Degraded and Mining Lands Management, and it is my pleasure to write this first editorial for the journal. The first issue is a collection of eight papers presented during the 1st International Conference on Environmental, Socio-economic, and Health Impacts of Artisanal and Small-Scale Mining which was held in Malang during February 2012. These eight papers have been authored by leading scientists from South-East Asia and Australasia, and describe new initiatives in the management of degraded and mining lands. On behalf of the Journal of Degraded and Mining Lands Management I thank you for reading this first journal issue of Volume 1. The editorial board invites you to support this journal and signals its intention to aspire to high standards of scientific and written excellence. As a result of the generous support of the University of Brawijaya, the Journal will have no page charges. The Journal of Degraded and Mining Lands Management therefore represents a new mechanism to present relevant, high quality and peer reviewed science and commentary to the international community. Christopher Anderson Associate-Editor, Journal of Degraded and Mining Lands Management Senior Lecturer, Institute of Agriculture and Environment, Massey University, New Zealand Adjunct Professor, Institute of Geochemistry, Chinese Academy of Science Adjunct Professor, NBK Institute of Mining Engineering, University of British Columbia, Canada [1]CIA (2013). “World Factbook.” https://www.cia.gov/library/publications/the-world-factbook/rankorder/2147rank.html retrieved 28 October 2013 [2] Calder, J (2007). “Most Populous Islands.” www.worldislandinfo.com/POPULATV2.htm retrieved 28 October 2013.
اظهر المزيد [+] اقل [-]Ecosystem-based management objectives for the North Sea: riding the forage fish rollercoaster
2013
kooten | brunel | a. | aarts | engelhard | deurs | scott | k. | lauerburg | k.h. | beare | m.a | t. | garthe | smout | hoff | dickey-collas | andersen | peck | raab | s. | rindorf | r.a.m. | g. | d. | g.h. | f. | m.
Dickey-Collas, M., Engelhard, G.H., Rindorf, A., Raab, K., Smout, S., Aarts, G., Deurs, M., Brunel, T., Hoff, A., Lauerburg, R.A.M., Garthe, S., Andersen, K.H., Scott, F., Kooten, T., Beare, D., Peck, M.A. (2013) ICES Journal of Marine Science, 71(1): 128-142 (open access) | The North Sea provides a useful model for considering forage fish (FF) within ecosystem-based management as it has a complex assemblage of FF species. This paper is designed to encourage further debate and dialogue between stakeholders about management objectives. Changing the management of fisheries on FF will have economic consequences for all fleets in the North Sea. The predators that are vulnerable to the depletion of FF are Sandwich terns, great skua and common guillemots, and to a lesser extent, marine mammals. Comparative evaluations of management strategies are required to consider whether maintaining the reserves of prey biomass or a more integral approach of monitoring mortality rates across the trophic system is more robust under the ecosystem approach. In terms of trophic energy transfer, stability, and resilience of the ecosystem, FF should be considered as both a sized-based pool of biomass and as species components of the system by managers and modellers. Policy developers should not consider the knowledge base robust enough to embark on major projects of ecosystem engineering. Management plans appear able to maintain sustainable exploitation in the short term. Changes in the productivity of FF populations are inevitable so management should remain responsive and adaptive
اظهر المزيد [+] اقل [-]Determinants of food security in selected agro-pastoral communities of Somali and Oromia regions, Ethiopia
2013 | 2014
Asenso-Okyere, Kwadwo; Mekonnen, Daniel Ayalew; Zerfu, Elias
Non-PR | IFPRI3; E.1 Policies, institutions and investments for resilient social systems | ESARO
اظهر المزيد [+] اقل [-]Dextran sulphate and ficcol fail as macromolecular crowders to enhance extracellular matrix deposition
2013
Pirraco, Rogério | Carvalho, F. | Reis, R. L. | Marques, A. P.
Publicado em "Journal of Tissue Engineering and Regenerative Medicine", vol. 7, supp. 1 (2013) | The development of strategies based on the use of scaffolds for Tissue Engineering and Regenerative Medicine(TERM) has been hindered by the inability of researchers to present solutions to overcome problems mainly related with the biocompatibility of materials andin vivoperfusion of the 3D structures. It is in this context that scaffold-free methodologies are being presented as increasingly attractive strategies for TERM. Scaffold-free approaches in general rely on the production of<br>extracellular matrix(ECM) by the cells of interest. However, the creation of an ECM robust enough for use in TERM is many times a challenge. Therefore, there is an important need to develop protocols that boost cell’s ability to produce ECM. One way to achieve this is to expose cells to an environment crowded with adequate macromolecules in order to mimic the physiological cellular milieu. Dextran sulphate(DxS) and Ficoll(Fc) have been suggested as compounds capable of increasing ECM deposition. The involved mechanism is closely related to the increase in enzyme-mediated collagen deposition. In the present work, we hypothesized that the use of DxS or of a combination of Fc of different molecular weights (Fc70/Fc400) as crowders in culture medium could increase the robustness of the ECM produced by humanfibroblasts(hFb) or human adipose-derived Stem Cells(hASCs). 5x10<sup>4 </sup>hFb or hASC were seeded on wells of 24 and 48 well plates, and cultured for 24 h in a-MEM supplemented wih10% FBS and 1% antibiotics. After thefirst 24 h, the medium was replaced by fresh medium supplemented with 1% FBS and a)50lg/mL of Ascorbic Acid, b)50lg/mL of Dextran Sulphate, or c)37.5 mg/mL of Fc70+25 mg/mL of Fc400. Cells were cultured for further 2 and 5 days. dsDNA quantification showed that in both conditions b) and c), and independently of the cell type, cell proliferation was significantly reduced. ECM production was<br>evaluated by quantifying the deposited collagen using a semi-quantitative Sirius Red kit (Picrosirius, Chondrex, USA). Collagen quantification, normalized with dsDNA, demonstrated that for both cells types, the presence of either DxS or Fc70/Fc400 resulted in the decrease of ECM deposition. In conclusion, the use of DxS and Fc70/Fc under the conditions herein described failed to increase the ECM production by both hFb and hASCs. | This research has been funded by the EU Seventh Framework Programme under grant agreement FP7-KBBE-2010-4266033-SPECIAL and by the Portuguese Foundation for Science and Technology (FCT)-funded project Skingineering (PTDC/SAU-OSM/099422/2008).
اظهر المزيد [+] اقل [-]A potential flow based flight simulator for an underwater glider
2013
Phoemsapthawee, Surasak | Le Boulluec, Marc | Laurens, Jean-marc | Deniset, Francois
Underwater gliders are recent innovative types of autonomous underwater vehicles (AUVs) used in ocean exploration and observation. They adjust their buoyancy to dive and to return to the ocean surface. During the change of altitude, they use the hydrodynamic forces developed by their wings to move forward. Their flights are controlled by changing the position of their centers of gravity and their buoyancy to adjust their trim and heel angles. For better flight control, the understanding of the hydrodynamic behavior and the flight mechanics of the underwater glider is necessary. A 6-DOF motion simulator is coupled with an unsteady potential flow model for this purpose. In some specific cases, the numerical study demonstrates that an inappropriate stabilizer dimension can cause counter-steering behavior. The simulator can be used to improve the automatic flight control. It can also be used for the hydrodynamic design optimization of the devices.
اظهر المزيد [+] اقل [-]Determinants of food security in selected agro-pastoral communities of Somali and Oromia regions, Ethiopia
2013
Asenso-Okyere, Kwadwo | Mekonnen, Daniel Ayalew | Zerfu, Elias
Measurement of Diurnal Body Tilt Angle Distributions of Threeline Grunt Parapristipoma trilineatum Using Micro-Acceleration Data Loggers
2013
Hideaki Tanoue | Teruhisa Komatsu | Alabsi Natheer | Isamu Mitani | Shinichi Watanabe | Yuuki Watanabe | Akira Hamano | Nobuyuki Miyazaki
The body tilt angle of a fish has a large effect on the acoustic target strength. For an accurate estimation of fish abundance using acoustic methods, it is necessary to measure body tilt angles in free-ranging fish. We measured diurnal body tilt angle distributions of threeline grunt (Parapristipoma trilineatum) while swimming in schools in a fish cage. Micro-acceleration data loggers were used to record (for 3 days) swaying and surging accelerations (at 16 Hz intervals) of 10 individuals among 20 forming a school in a fish cage. Time series analysis of 1-h mean body tilt angles revealed significant differences in body tilt angles between day (−7.9 ± 3.28°) and night (0.8 ± 5.89°), which must be taken into account when conducting acoustic surveys. These results will be useful for calculating the average dorsal aspect target strength (TS) of threeline grunt for accurate estimations of fish abundance.
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