PDB Search Results

Now showing 1 - 10 of 1546
  • research article
    Musacchio, Arianna
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    Re, Viviana
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    Delconte, Carlo Andrea
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    Racchetti, Erica
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    Soana, Elisa
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    Balestrini, Raffaella
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    Viaroli, Pierluigi
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    Sacchi, Elisa
    Rendiconti online della Società Geologica Italiana. Roma : Società Geologica Italiana, 2019, vol. 47., p. 73-78
    Long term projection of N and P concentrations in surface and ground waters cannot be entirely achieved unless groundwater features and processes affecting nutrients at the watershed scale are considered. This work presents the general approach of the INTEGRON project whose aim is to "square the cycle" in nutrient budgets, evaluating the role of groundwater as a temporary/permanent sink or as a release term at the catchment scale, in the Adda and the Ticino basins (northern Italy). An integrated approach is currently tested, which considers surface and groundwater, N and P species combining hydrogeology, biogeochemistry and socio-hydrogeology. The availability of nutrient excess, the nutrient increase in rivers during the irrigation period, and nitrate trends in different groundwater bodies confirm that groundwater in the area acts as both sink and source term of nutrients. Given the complexity of the studied system, the proposed multidisciplinary approach can permit to effectively implement science-based management strategies for water protection that consider both the social and environmental domains.
    Scopus© Citations 4Scopus© SNIP 0.299
  • research article
    Dulskas, Audrius
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    Gaižauskas, Vytautas
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    Kildušienė, Inga
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    Smailytė, Giedrė
    Journal of clinical medicine
    Purpose: In this study, we analyzed the mortality and survival of colorectal cancer patients in Lithuania. Methods: This was a national cohort study. Population-based data from the Lithuanian Cancer Registry and period analyses were collected. Overall, 20,980 colorectal cancer patients were included. We examined the changes in colorectal cancer mortality and survival rates between 1998 and 2012 according to cancer anatomical sub-sites and stages. We calculated the 5-year relative survival estimates using period analysis. Results: Overall, 20,980 colorectal cancer cases reported from 1998 to 2012 were included in the study. The total number of newly diagnosed colorectal cancers increased from 1998–2002 to 2008–2012 by 12.1%. The highest number of colorectal cancers was localized and increased from 33.9% to 42.0%. The number of cancers with regional metastases and advanced cancers decreased by 11.1% and 15.5%, respectively. An increased number of new cases was observed for almost all colon cancer sub-sites. The overall 5-year relative survival rate increased from 37.9% in 1998–2002 to 51.5% in 2008–2012. We showed an increase in survival rates for all stages and all sub-sites. In the most recent period, patients with a localized disease had a 5-year survival rate of 78.6%, while survival estimates for advanced cancer patients remained low at 6.6%. Conclusion: Although survival rates variated in colorectal cancer patients according to disease stages and sub-sites, we showed increased survival rates for all patients.
      6Scopus© Citations 11WOS© IF 4.241WOS© AIF 5.181
  • research article
    Chapman, S.J.
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    ; ;
    Nutautienė, Vitalija
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    Žeromskas, Paulius
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    Aliošin, Oleg
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    Slepavičius, Algirdas
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    Kybransienė, Miglė
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    Dulskas, Audrius
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    Kuliavas, Justas
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    Kavaliauskas, Povilas
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    Kavaliauskaitė, R.
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    Poškus, Eligijus
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    Danys, Donatas
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    Kryžauskas, Marius
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    Mikalauskas, Saulius
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    Račkauskas, Rokas
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    Drungilas, Mantas
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    Poškus, Tomas
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    Jotautas, Valdemaras
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    Strupas, Kęstutis
    British journal of surgery
    Background: Ileus is common after elective colorectal surgery, and is associated with increased adverse events and prolonged hospital stay. The aim was to assess the role of non-steroidal anti-inflammatory drugs (NSAIDs) for reducing ileus after surgery. Methods: A prospective multicentre cohort study was delivered by an international, student- and trainee-led collaborative group. Adult patients undergoing elective colorectal resection between January and April 2018 were included. The primary outcome was time to gastrointestinal recovery, measured using a composite measure of bowel function and tolerance to oral intake. The impact of NSAIDs was explored using Cox regression analyses, including the results of a centre-specific survey of compliance to enhanced recovery principles. Secondary safety outcomes included anastomotic leak rate and acute kidney injury. Results: A total of 4164 patients were included, with a median age of 68 (i.q.r. 57-75) years (54·9 per cent men). Some 1153 (27·7 per cent) received NSAIDs on postoperative days 1-3, of whom 1061 (92·0 per cent) received non-selective cyclo-oxygenase inhibitors. After adjustment for baseline differences, the mean time to gastrointestinal recovery did not differ significantly between patients who received NSAIDs and those who did not (4·6 versus 4·8 days; hazard ratio 1·04, 95 per cent c.i. 0·96 to 1·12; P = 0·360). There were no significant differences in anastomotic leak rate (5·4 versus 4·6 per cent; P = 0·349) or acute kidney injury (14·3 versus 13·8 per cent; P = 0·666) between the groups. Significantly fewer patients receiving NSAIDs required strong opioid analgesia (35·3 versus 56·7 per cent; P < 0·001). Conclusion: NSAIDs did not reduce the time for gastrointestinal recovery after colorectal surgery, but they were safe and associated with reduced postoperative opioid requirement.
      9Scopus© Citations 32WOS© IF 6.939WOS© AIF 3.143Scopus© SNIP 2.44
  • Publication
    Analysis of the ecological parameters of the diesel engine powered with biodiesel fuel containing methyl esters from Camelina sativa oil
    [Dyzelinio variklio ekologinių parametrų tyrimai jam naudojant vasarinės judros metilesterių biodyzeliną]
    research article; ;
    Makarevičienė, Violeta
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    Kazanceva, Irina
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    Kazancev, Kiril
    Transport
    The article explores the possibilities of using fatty acid methyl esters derived from the oil of a new species of oily plant Camelina sativa not demanding on soil. The performed research on the physical and chemical properties of pure methyl esters from Camelina sativa show that biofuels do not meet requirements for the biodiesel fuel standard (LST EN 14214:2009) of a high iodine value and high content of linoleic acid methyl ester, so they must be mixed with methyl esters produced from pork lard the content of which in the mixture must be not less than 32%. This article presents the results of tests on combustion emission obtained when three-cylinder diesel engine VALMET 320 DMG was fuelled with a mixture containing 30% of this new kind of fuel with fossil diesel fuel comparing with emissions obtained when the engine was fuelled with a fuel mixture containing 30% of conventional biodiesel fuel (rapeseed oil methyl esters) with fossil diesel fuel. The obtained results show that using both types of fuel, no significant differences in CO and NOx concentrations were observed throughout the tested load range. When operating on fuels containing methyl esters from Camelina sativa, HC emissions decreased by 10 to 12% and the smokeness of exhaust gas by 12 to 25%.
      2Scopus© Citations 22
  • research article
    Hofmeister, Richard
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    Bolding, Karsten
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    Hetland, Robert D
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    Siegel, Herbert
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    Burchard, Hans
    Continental shelf research. Oxford : Pergamon-Elsevier Science, 2013, vol. 71., p. 68-77
    The dynamics of cooling water spreading in a non-tidal embayment is subject of a modelling-based study of Greifswald Bay, a shallow embayment at the south-western coast of the Baltic Sea. Potential cooling water spreading due to a possible power plant at Greifswald Bay is evaluated as differences between a realistic hind-cast simulation and a similar simulation but including the cooling water pumping. The model results are confirmed with satellite imagery of the embayment during operation of a nuclear power plant in the 1980s. The effect of cooling water pumping on the residual circulation, additional stratification and the heating of near-bed waters in the herring spawning areas is evaluated from the simulation. The model results for an idealised embayment and the realistic scenario, as well as the satellite images, show a clear dependence of the plume spreading on the wind direction. Although the surface plume affects a large area of the embayment, the results show a localised impact on residual circulation, bulk stratification and heating of the waterbody.
    Scopus© Citations 6WOS© IF 2.115WOS© AIF 2.025Scopus© SNIP 1.436
  • Publication
    Ship safety in open ports
    [Laivų saugumas atviruose uostuose]
    research article; ;
    Wijffels, Joep
    Transport. Vilnius : Technika, 2009, vol. 24, no. 2., p. 113-120
    Ports and terminals open to prevailing winds can cause problems to moored ships with a high freeboard. Such ships, i.e. ship and berth mooring systems, have to deal with signifi cant aerodynamic loads.Th is paper addresses the theoretical approach of the infl uence of aerodynamic loads on a mooring system for ship and investigates whether windscreens can reduce aerodynamic loads on ships in ports.
    Scopus© Citations 11WOS© IF 2.552WOS© AIF 0.884
  • Publication
    Rogerio Bacono mokslo vizija
    [Roger Bacon’s vision of science]
    research article
    Logos. Vilnius, 2017, Nr. 91., p. 39-46
    Straipsnyje analizuojama XIII amžiaus pranciškonų mokslininko Rogerio Bacono mokslo samprata. Baconas suvokė mokslo svarbą reformuojant visuomenės gyvenimą, todėl jo tikslas buvo įgyvendinti tarpdisciplininę komunikaciją. Jis siekė sukurti universalią mokslo sistemą (scientia integralis), kurioje derėtų tiek Biblija, tiek filosofija, tiek gamtos mokslai. Jungiančioji grandis šioje mokslų sistemoje yra matematika ir eksperimentinis mokslas (scientia experimentalis). Pasaulio ir gamtos supratimas, Bacono teigimu, galimas tik apjungiant proto ir eksperimento pradus. Bacono mokslo vizija analizuojama remiantis jo traktatu Opus Maius.
    Scopus© SNIP 0.18
  • research article
    Klemas, Victor
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    Baltica. Vilnius, 2014, vol. 27, spec. iss., p. 1-2
      8Scopus© Citations 1WOS© IF 0.579WOS© AIF 2.059Scopus© SNIP 0.325
  • research article;
    Lehtiniemi, Maiju
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    Biological invasions. Dordrecht : Springer, 2011, vol. 13, no. 8., p. 1739-1765
    This paper presents an overall bioinvasion impact assessment on the scale of a large marine region—the Baltic Sea, as defined by the Helsinki Commission. The methodology is based on a classification of the abundance and distribution range of alien species and the magnitude of their impacts on native communities, habitats and ecosystem functioning aggregated in a ‘‘Biopollution Level’’ index (BPL) which ranges from ‘no impact’ (BPL = 0) to ‘massive impact’ (BPL = 4). The assessment performed for nine Baltic sub-regions revealed that documented ecological impact is only known for 43 alien species out of 119 registered in the Sea. The highest biopollution (BPL = 3, strong impact) occurs in coastal lagoons, inlets and gulfs, and the moderate biopollution (BPL = 2)—in the open sea areas. The methodology was also used to classify species into alien (BPL = 0) versus ‘impacting’ species (BPL[0), which can be divided into ‘potentially invasive’ (BPL = 1) and ‘invasive’ (BPL[1) ones. No clear correlation between the number of established alien and impacting species was found in the sub-regions of the Baltic Sea. The methodology, although requiring a substantial research effort, proved to be useful for interregional comparisons and evaluating the bioinvasion effects of individual alien species.
    Scopus© Citations 59WOS© IF 2.896WOS© AIF 3.095Scopus© SNIP 1.397
  • research article
    Muñoz-Colmeneroa, Marta
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    Ardura, Alba
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    Clusa, Laura
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    Miralles, Laura
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    Gower, Fiona
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    Garcia-Vazquez, Eva
    Journal for nature conservation. Jena : Elsevier GmbH : Urban & Fischer Verlag, 2018, vol. 43., p. 173-178
    The tubeworm Ficopomatus enigmaticus is a highly invasive species with an increasingly expanding distribution in Europe and America. In port areas it causes damage to structures and sewage systems because it is an active reef builder. Having short generation time and high reproduction capacity it is especially important to detect the species before it is fully settled down. Here we have designed a PCR-based species-specific molecular marker within the Cytochrome Oxidase subunit I gene (COI). The new marker was validated in vitro and from field water samples obtained in southwest Bay of Biscay ports (north of Spain). The species was detected only from eDNA in Villaviciosa port, where it was not found de visu in the intertidal zone and floating structures. Adults were found in the same port one year later as confirmed taxonomically and by conventional barcoding, which confirms the utility of the new eDNA marker for early detection of F. enigmaticus. This new and cheap molecular tool could be used for routine monitoring of coastal areas, in order to early detecting this invasive species.
    Scopus© Citations 7WOS© IF 2.289WOS© AIF 3.247Scopus© SNIP 1.123