166 research outputs found

    Examining Groundtrack Geometry Transitions by Evaluating the Number of Longitude-Rate Zeros

    Full text link
    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76356/1/AIAA-34089-698.pd

    Comparative study of the environmental footprints of marinas on European Islands

    Get PDF
    Ports have been key elements in Europe's economic development. This situation is even more relevant on islands, which are highly dependent on the maritime sector. Consequently, over the years, ports with diverse functionalities have been established both in mainland Europe and on its outlying islands. This article discusses the environmental impact of leisure marinas on European islands, especially as they are closely linked to economic development through tourism. The aim is to study the environmental impact of these infrastructures by determining the carbon and water footprints of marinas on European islands in the Atlantic and the Mediterranean. The results obtained enable the authors to make recommendations in order to reduce the overall environmental footprint of marinas on islands, considering that these territories are much more vulnerable to climate change than mainland locations in Europe

    INCAMP: Master's Degree In The Carbon Neutral Management of Sport Marinas.

    Get PDF
    INCAMP project is developing an International Master’s Degree in the Carbon Neutral Management of sport marinas. In this article we present a draft on the distribution of the Master, with main learning materials that will be taught. The content has been divided into paths, modules and subjects, as following: 6 Fundamental modules; 18 Subjects; Practical and a Dissertation. Subjects of the Master has been selected to give the appropriate knowledge to the future students interested in Carbon Neutral Management of sport marinas. INCAMP has been created to meet future skills needs and to enhance the opportunities for cooperation between Higher Education, Vocational Educational Training and Industry, providing opportunities for cooperation among stakeholders as well as the exchange and transfer of knowledge to increase know-how. Throughout the master, students will be taught to understand and investigate the major processes and change drivers which contribute to climate conditions in the earth system at different scales, among them, the understanding of the interdependencies between the grand cycles (water, carbon, nitrogen, phosphorus) in the Sport Marinas Management System. Furthermore, they will analyse the roles played by the biosphere in global and local environmental change: how is it affected by environmental change and how can changes in the biosphere affect global change? A macro-scale view of global biosphere function in Earth history and the global impact of humanity, putting contemporary environmental change into wider context. Human systems of knowledge, values, organization, technology, and behaviour will be examined in relation to environmental change in an evolutionary and social development context. What is the utility of viewing human societies as systems? How do the complexity, diversity, stratification, and resource management strategies of human societies shape their contributions and responses to critical environmental parameters and challenges? The module introduces relevant cognitive, social, economic, and human ecological concepts and theory to understand historical developments in social-ecological systems and address contemporary issues of sustainability and wellbeing in an increasingly populous and globalised society. Specifically, the students will investigate the role of energy systems in causing and mitigating climate change for carbon neutral management of sport marinas. Debates and major trends in the role of technologies, economics, human behaviour, social change and governance in avoiding dangerous anthropogenic climate change

    Protein dynamics with off-lattice Monte Carlo moves

    Full text link
    A Monte Carlo method for dynamics simulation of all-atom protein models is introduced, to reach long times not accessible to conventional molecular dynamics. The considered degrees of freedom are the dihedrals at Cα_\alpha-atoms. Two Monte Carlo moves are used: single rotations about torsion axes, and cooperative rotations in windows of amide planes, changing the conformation globally and locally, respectively. For local moves Jacobians are used to obtain an unbiased distribution of dihedrals. A molecular dynamics energy function adapted to the protein model is employed. A polypeptide is folded into native-like structures by local but not by global moves.Comment: 10 pages, 4 Postscript figures, uses epsf.sty and a4.sty; scheduled tentatively for Phys.Rev.E issue of 1 March 199

    Leisure Boating Environmental Footprint: A Study of Leisure Marinas in Palermo, Italy

    Get PDF
    Ports have played a significant role in the touristic development and further economic growth of Italy. It is the country with the highest number of berths among the nations in the Mediterranean Sea; over time, Italy has created ports with a range of functions. Therefore, it is of vital importance to evaluate the potential pollutants generated from these docks and propose ways to eliminate those problems. A survey that asked about the carbon footprint and the quality of the water in the water footprint calculation was created and distributed to the management of the marinas’ operations. After receiving the completed surveys, the data were analyzed and translated using emission factors into tons of CO2 equivalent. The amount of greenhouse gases generated by the investigated marinas was determined by calculating the carbon and water footprints of five representative Palermo marinas, and we aimed to better understand how these port-related operations affect the environment. To pinpoint the pollutant sources within the investigated marinas, an original P-Mapping/Pareto ratio approach was performed as supported by Pareto’s principle. The findings indicated that the primary operations of the marina sector are the main sources of pollution. However, a sizable portion of the emissions were also caused by pollution from supporting operations. Based on the study, the origins of CO2 and pollution in marina operations were clarified. The results obtained enable the authors to make recommendations that all recreational boating activities should be closely supervised in order to reduce CO2 emissions and their input in relation to environmental degradation

    Terahertz underdamped vibrational motion governs protein-ligand binding in solution

    Get PDF
    Low-frequency collective vibrational modes in proteins have been proposed as being responsible for efficiently directing biochemical reactions and biological energy transport. However, evidence of the existence of delocalized vibrational modes is scarce and proof of their involvement in biological function absent. Here we apply extremely sensitive femtosecond optical Kerr-effect spectroscopy to study the depolarized Raman spectra of lysozyme and its complex with the inhibitor triacetylchitotriose in solution. Underdamped delocalized vibrational modes in the terahertz frequency domain are identified and shown to blue-shift and strengthen upon inhibitor binding. This demonstrates that the ligand-binding coordinate in proteins is underdamped and not simply solvent-controlled as previously assumed. The presence of such underdamped delocalized modes in proteins may have significant implications for the understanding of the efficiency of ligand binding and protein–molecule interactions, and has wider implications for biochemical reactivity and biological function

    Reactivity of neonicotinoid insecticides with carbonate radicals

    Get PDF
    “NOTICE: this is the author’s version of a work that was accepted for publication in Water Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in WATER RESEARCH, [VOL46, ISSUE11, jul 2012] DOI10.1016/j.watres.2012.03.051¨ ©IWA Publishing 2012. The definitive peer-reviewed and edited version of this article is published in Water Research 46 11 3476-3489 2012 10.1016/j.watres.2012.03.051 and is available at www.iwapublishing.comThe reaction of three chloronicotinoid insecticides, namely Imidacloprid (IMD), Thiacloprid (THIA) and Acetamiprid (ACT), with carbonate radicals (CO3 center dot-) was investigated. The second order rate constants (4 +/- 1) x 10(6), (2.8 +/- 0.5) x 10(5), and (1.5 +/- 1) x 10(5) M-1 s(-1) were determined for IMD, THIA and ACT, respectively. The absorption spectra of the organic intermediates formed after CO3 center dot- is approximately equal to attack to IMD is in line with those reported for alpha-aminoalkyl radicals. A reaction mechanism involving an initial charge transfer from the amidine nitrogen of the insecticides to CO3 center dot- is proposed and further supported by the identified reaction products. The pyridine moiety of the insecticides remains unaffected until nicotinic acid is formed. CO3 center dot- radical reactivity towards IMD, ACT, and THIA is low compared to that of HO center dot radicals, excited triplet states, and O-1(2), and is therefore little effective in depleting neonicotinoid insecticides. (C) 2012 Elsevier Ltd. All rights reserved.This research was financially supported by Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Agencia Nacional de Promocion Cientifica y Tecnologica (Argentina, project PICT 2007 number 00308), and Agencia Espanola de Cooperacion Internacional (project A/8199/07). M.L.D. thanks CONICET for a graduate studentship. M.C.G. is a research member of CONICET. D.O.M. is a research member of Comision de Investigaciones Cientificas de la Provincia de Buenos Aires (CIC), Argentina. L.S.J. acknowledges Ministerio de Ciencia e Innovacion for his Juan de la Cierva scholarship.Dell'arciprete, ML.; Soler Escoda, JM.; Santos-Juanes Jordá, L.; Arques Sanz, A.; Martire, DO.; Furlong, JP.; González, MC. (2012). Reactivity of neonicotinoid insecticides with carbonate radicals. Water Research. 46(11):3476-3489. https://doi.org/10.1016/j.watres.2012.03.051S34763489461

    Comparative study of the environmental footprints of marinas on European Islands

    Get PDF
    Ports have been key elements in Europe's economic development. This situation is even more relevant on islands, which are highly dependent on the maritime sector. Consequently, over the years, ports with diverse functionalities have been established both in mainland Europe and on its outlying islands. This article discusses the environmental impact of leisure marinas on European islands, especially as they are closely linked to economic development through tourism. The aim is to study the environmental impact of these infrastructures by determining the carbon and water footprints of marinas on European islands in the Atlantic and the Mediterranean. The results obtained enable the authors to make recommendations in order to reduce the overall environmental footprint of marinas on islands, considering that these territories are much more vulnerable to climate change than mainland locations in Europe

    Establishment of a national network of cetacean monitoring within the marine strategy

    Get PDF
    CONISMA, CNR and CIRCE, involved Italian research units (RUs) working on cetaceans to joina National Network answering the Marine Strategy Framework Directive (MSFD) requirements by sharing monitoring data. Data obtained during the 2016 monitoring campaigns by 13 RUs are presented here

    R2R - software to speed the depiction of aesthetic consensus RNA secondary structures

    Get PDF
    <p>Abstract</p> <p>Background</p> <p>With continuing identification of novel structured noncoding RNAs, there is an increasing need to create schematic diagrams showing the consensus features of these molecules. RNA structural diagrams are typically made either with general-purpose drawing programs like Adobe Illustrator, or with automated or interactive programs specific to RNA. Unfortunately, the use of applications like Illustrator is extremely time consuming, while existing RNA-specific programs produce figures that are useful, but usually not of the same aesthetic quality as those produced at great cost in Illustrator. Additionally, most existing RNA-specific applications are designed for drawing single RNA molecules, not consensus diagrams.</p> <p>Results</p> <p>We created R2R, a computer program that facilitates the generation of aesthetic and readable drawings of RNA consensus diagrams in a fraction of the time required with general-purpose drawing programs. Since the inference of a consensus RNA structure typically requires a multiple-sequence alignment, the R2R user annotates the alignment with commands directing the layout and annotation of the RNA. R2R creates SVG or PDF output that can be imported into Adobe Illustrator, Inkscape or CorelDRAW. R2R can be used to create consensus sequence and secondary structure models for novel RNA structures or to revise models when new representatives for known RNA classes become available. Although R2R does not currently have a graphical user interface, it has proven useful in our efforts to create 100 schematic models of distinct noncoding RNA classes.</p> <p>Conclusions</p> <p>R2R makes it possible to obtain high-quality drawings of the consensus sequence and structural models of many diverse RNA structures with a more practical amount of effort. R2R software is available at <url>http://breaker.research.yale.edu/R2R</url> and as an Additional file.</p
    corecore