76 research outputs found

    Sustainable development of maritime cultural heritage in the Gulf of Maine

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    In this study the principles of sustainable development and ecosystem-based management are applied to develop a conservation policy for maritime cultural heritage in the Gulf of Maine. This dissertation first examines the effectiveness of existing laws, policies and preservation programs available for the protection and conservation of maritime historical and archaeological resources in the region, and provides an assessment of the diversity and abundance of these resources. Then the principles of sustainability and ecosystem-based management, including inter- and intra-generational equity, precaution, system interconnectedness, and diversity, are applied to form a theoretical framework upon which policies and cultural resource management techniques are developed. To this end, the study identifies the cultural and economic values associated with maritime cultural heritage and the costs and benefits of conservation projects. Finally, policy recommendations are made regarding the governments\u27 role and responsibility in protecting and managing the public interest in this cultural heritage: government should enact law that asserts public property ownership and protection of all maritime cultural resources in waters under U.S. federal jurisdiction, implement a regional governance structure based on the tenets of ecosystem-based management to manage and develop these resources effectively, and integrate valuation techniques in environmental and historic preservation regulatory procedures. Given these policy developments, governments can make informed decisions about the use of cultural resources, support coastal communities\u27 development efforts, and identify the social and economic benefits of conservation projects

    Book Review: Looking for Leads: Shipwrecks of the Past Revealed by Contemporary Documents and the Archaeological Record by Christian Ahlstrom

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    Book Review: Looking for Leads: Shipwrecks of the Past Revealed by Contemporary Documents and the Archaeological Record by Christian Ahlstrom, 1997, The Finnish Academy of Science and Letters, Helsinki. 238 pages, 57 figures, 16 tables, 1 appendix, no price given

    A Preliminary Report on the Excavation of a 19th-Century Derelict Vessel in Cape Neddick, Maine: The Southern New Jersey Coasting Schooner Annabella

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    In 1995, the Insistute of Maritime History conducted the archaeological investigation of a 19th-century coasting schooner, Annabella, in Cape Neddick, Maine. This type of craft, though ubiquitous on the eastern seaboard in the 19th century, has not been documented in an archaeological setting to date in New England. Maine played a pivotal role in America\u27s economy, supplying the southern states and Caribbean Islands with a seemingly inexhaustible supply of raw materials such as timber, stone, ice, lime, and agricultural goods. This vessel was primarily involved in the transportation of cordwood along the east coast of the United States. Its heavily-built, shallow-draft hull was ideal for transporting heavy cargoes through the shallow tidal inlets of New England. Built in New Jersey in 1834 and finally abandoned in Cape Neddick in 1885, Annabella endured over 50 years of service, surviving the antebellum coasting trade, the Civil War, and beyond; thus, its excavation affords us a detailed look at the coasting trade that heretofore has been absent

    Maine’s Potential to Be a Global Leader in Sustainable Seaweed Harvesting and Management

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    A multitude of macroalgae (i.e., seaweed) species that are harvested in Maine are economically and ecologically important. Currently, management of these resources in Maine is focused on rockweed (Ascophyllum nodosum). This seaweed grows in abundance along intertidal rocky shores and provides a number of benefits including serving as habitat and nursery for many species including fin-fish, coastal protection from storms and sea level rise, carbon sequestration, and is a harvestable natural resource used primarily in fertilizer and animal feed production. It is critical that these functions and benefits are maintained and harvesting activities managed to ensure a sustainable fishery and healthy ecosystem. In 2014, Maine drafted a rockweed fisheries management plan; however, this plan has yet to be adopted. The delay in adoption is now an opportunity to re-examine the plan from an ecosystem-based management (EBM) perspective. We compare EBM strategies to the existing rockweed fisheries management plan, and identify areas of synergy as well as gaps in the management of Maine’s seaweeds and harvesting activities. Based on this analysis we propose Maine adopt an EBM approach and strategies for wild as well as farmed seaweeds

    The origin of the Palaeoproterozoic AMCG complexes in the Ukrainian Shield : new U-Pb ages and Hf isotopes in zircon

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    This research gained financial support granted by the Royal Society, UK (2006/R4 IJP), and the Swedish Institute, Sweden. This paper is NORDSIM contribution number 484, and publication no. 62 of the Large Igneous Provinces – Supercontinent Reconstruction – Resource Exploration Project (CAMIRO Project 08E03, and NSERC CRDPJ 419503-11) (www.supercontinent.org, www.camiro.org/exploration/ongoing-projects), and a contribution to IGCP 648.The Ukrainian shield hosts two Palaeoproterozoic anorthosite-mangerite-charnockite-granite (AMCG) complexes (the Korosten and Korsun-Novomyrhorod complexes) that intruded Palaeoproterozoic continental crust in north-western and central parts of the shield, respectively. We report results of U-Pb zircon and baddeleyite dating of 16 samples from the Korosten plutonic complex (KPC), and 6 samples from the Korsun-Novomyrhorod plutonic complex (KNPC). Fifteen zircon samples from both complexes were also analysed for Hf isotopes. These new, together with previously published data indicate that the formation of the KPC started at c. 1815 Ma and continued until 1743 Ma with two main phases of magma emplacement at 1800-1780 and 1770-1758 Ma. Each of the main phases of magmatic activity included both basic and silicic members. The emplacement history of the KNPC is different from that of the KPC. The vast majority of the KNPC basic and silicic rocks were emplaced between c. 1757 and 1750 Ma; the youngest stages of the complex are represented by monzonites and syenites that were formed between 1748 and 1744 Ma. Both Ukrainian AMCG complexes are closely associated in space and time with mantle-derived mafic and ultramafic dykes. The Hf isotope ratios in the zircons indicate a predominantly crustal source for the initial melts with some input of juvenile Hf from mantle-derived tholeiite melts. The preferred model for the formation of the Ukrainian AMCG complexes involves the emplacement of large volumes of hot mantle-derived tholeiitic magma into the lower crust. This resulted in partial melting of mafic lower-crustal material, mixing of lower crustal and tholeiitic melts, and formation of ferromonzodioritic magmas. Further fractional crystallization of the ferromonzodioritic melts produced the spectrum of basic rocks in the AMCG complexes. Emplacement of the ferromonzodioritic and tholeiitic melts into the middle crust and their partial crystallization caused abundant melting of the ambient crust and formation of the large volumes of granitic rocks present in the complexes.PostprintPeer reviewe

    Composition, Diversity, and Origin of the Bacterial Community in Grass Carp Intestine

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    Gut microbiota has become an integral component of the host, and received increasing attention. However, for many domestic animals, information on the microbiota is insufficient and more effort should be exerted to manage the gastrointestinal bacterial community. Understanding the factors that influence the composition of microbial community in the host alimentary canal is essential to manage or improve the microbial community composition. In the present study, 16S rRNA gene sequence-based comparisons of the bacterial communities in the grass carp (Ctenopharyngodon idellus) intestinal contents and fish culture-associated environments are performed. The results show that the fish intestinal microbiota harbors many cellulose-decomposing bacteria, including sequences related to Anoxybacillus, Leuconostoc, Clostridium, Actinomyces, and Citrobacter. The most abundant bacterial operational taxonomic units (OTUs) in the grass carp intestinal content are those related to feed digestion. In addition, the potential pathogens and probiotics are important members of the intestinal microbiota. Further analyses show that grass carp intestine holds a core microbiota composed of Proteobacteria, Firmicutes, and Actinobacteria. The comparison analyses reveal that the bacterial community in the intestinal contents is most similar to those from the culture water and sediment. However, feed also plays significant influence on the composition of gut microbiota

    Greenland Geothermal Heat Flow Database and Map (Version 1)

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    We compile and analyze all available geothermal heat flow measurements collected in and around Greenland into a new database of 419 sites and generate an accompanying spatial map. This database includes 290 sites previously reported by the International Heat Flow Commission (IHFC), for which we now standardize measurement and metadata quality. This database also includes 129 new sites, which have not been previously reported by the IHFC. These new sites consist of 88 offshore measurements and 41 onshore measurements, of which 24 are subglacial. We employ machine learning to synthesize these in situ measurements into a gridded geothermal heat flow model that is consistent across both continental and marine areas in and around Greenland. This model has a native horizontal resolution of 55ĝ€¯km. In comparison to five existing Greenland geothermal heat flow models, our model has the lowest mean geothermal heat flow for Greenland onshore areas. Our modeled heat flow in central North Greenland is highly sensitive to whether the NGRIP (North GReenland Ice core Project) elevated heat flow anomaly is included in the training dataset. Our model's most distinctive spatial feature is pronounced low geothermal heat flow (<ĝ€¯40ĝ€¯mWĝ€¯m-2) across the North Atlantic Craton of southern Greenland. Crucially, our model does not show an area of elevated heat flow that might be interpreted as remnant from the Icelandic plume track. Finally, we discuss the substantial influence of paleoclimatic and other corrections on geothermal heat flow measurements in Greenland. The in situ measurement database and gridded heat flow model, as well as other supporting materials, are freely available from the GEUS Dataverse (10.22008/FK2/F9P03L; Colgan and Wansing, 2021).publishedVersionPeer reviewe

    Role of gut microbiota in chronic low-grade inflammation as potential driver for atherosclerotic cardiovascular disease:a systematic review of human studies

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    A hallmark of obesity is chronic low-grade inflammation, which plays a major role in the process of atherosclerotic cardiovascular disease (ACVD). Gut microbiota is one of the factors influencing systemic immune responses, and profound changes have been found in its composition and metabolic function in individuals with obesity. This systematic review assesses the association between the gut microbiota and markers of low-grade inflammation in humans. We identified 14 studies which were mostly observational and relatively small (n = 10 to 471). The way in which the microbiome is analysed differed extensively between these studies. Lower gut microbial diversity was associated with higher white blood cell counts and high sensitivity C-reactive protein (hsCRP) levels. The abundance of Bifidobacterium, Faecalibacterium, Ruminococcus and Prevotella were inversely related to different markers of low-grade inflammation such as hsCRP and interleukin (IL)-6. In addition, this review speculates on possible mechanisms through which the gut microbiota can affect low-grade inflammation and thereby ACVD. We discuss the associations between the microbiome and the inflammasome, the innate immune system, bile acids, gut permeability, the endocannabinoid system and TMAO. These data reinforce the importance of human research into the gut microbiota as potential diagnostic and therapeutic strategy to prevent ACVD

    Seek, develop and take care of : when key competence walk on two legs

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    Syfte: Att studera hur relationen mellan arbetsgivaren och den enskilde arbetstagaren pÄverkar offentlig verksamhets möjlighet att attrahera, rekrytera samt behÄlla nyckelkompetens inom organisationen.   Metod: Studien har utgÄtt frÄn en kvalitativ datainsamlingsmetod genom intervjuer med respondenter ur Landstinget GÀvleborg. Materialet frÄn de genomförda intervjuerna har dÀrefter sammanförts och stÀllts mot olika sekundÀra informationskÀllor, vidare har respondenternas svar analyserats med tillÀmplig litteratur för att dÀrefter utmynna i vÄra slutsatser.   Resultat &amp; slutsats: Verksamheten Àr idag allt för fokuserad pÄ mÀtning av nyckeltal för att se vad som produceras per skattekrona, och ser inte vilken pÄverkan som ett ineffektivt kompetensförsörjningssystem av nyckelkompetenser har. Ett vidgat synsÀtt och omhÀndertagande av kompetensförsörjningen i allmÀnhet och kompetensutvecklingen i synnerhet gör att dessa kostnader kommer att betala sig, inkompetensen kostar mer i flera perspektiv.   Förslag till fortsatt forskning: Framtida studier skulle kunna inrikta sig mot att studera hur kompetensförsörjningssystemet ser ut i dag och hur en tÀnkbar utveckling kan se ut. Den högsta ledningen lÀgger stort fokus och ansvar pÄ "chefen". Vilken chefs- och ledarskapsutveckling bedrivs idag, vilka brister finns och vad skulle kunna göras för att utveckla den. Vilka kompetensÄtgÀrder genomförs till vilken kostnad och hur pÄverkar det verksamhetens möjlighet till resurseffektiv verksamhet.   Uppsatsens bidrag: En lyckad och vÀl fungerande kompetensförsörjning av nyckel-kompetenser krÀver ett engagemang frÄn högsta ledningen, som genomsyrar hela organisationen. Arbetsgivarens roll samt hur organisationen Àr uppbyggnad Àr en viktig del i om företaget ska ha en framgÄngsrik och effektiv kompetensförsörjning eller inte. Kom-petensförsörjning omfattar alla pÄverkansfaktorer och dÀrför kan delomrÄden inte behandlas var för sig utan mÄste ingÄ i en helhet, en kompetensförsörjningsprocess.Aim: To study how the relation between the employer and the employee influence public sectors possibility to attract, recruit and keep key competence within the organisation.   Method: The study is founded on a qualitative method for collection of data through interviews with personnel attached to "Landstinget GÀvleborg"[1]. The material gathered during the interviews has then been brought together and compared with different secondary sources, further on the respondents replies has been analyzed in comparison to applicable literature and thereafter derive our conclusions.   Result &amp; Conclusions: The activity today is all too focused on business ratio and to see what is produced for received tax revenues, and donŽt reflect on which implications a ineffective system for developing key competences have. A broader perspective and caring for developing competences in general and key competences in particular will make invest-ments worth while, incompetence are more costly in a variety of perspectives.   Suggestions for future research: Future studies could e.g. look further into how a conceivable development of the exciting system for development of competences could look like in the future. Top management have a large focus on and give the director vast responsibility. What director- and leadership development is conducted and what flaws can be seen, and what could be done to eliminate these flaws and develop the system concerning key competences. What measures regarding competences is conducted and to what cost, and how does this inflict on the organisations opportunity to perform a resource effective activity.   Contribution of the thesis: A successful and well functioning competence development of key competences demands a commitment from the top management which permeate the entire organisation. The directorsŽ role and how the organisation is structured are important parts if the organisation shall have a successful and efficient competence supply, or not. Supplying competence to an organisation includes all factors that have influence on the process, so for that reason can single areas or matters not be managed separately but be part in a solution as a whole, in a competence supplying process. [1] County council, politically elected body representing a number of municipalities regarding issues concerning e.g. health- and medical service, education and social care
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