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  • 1
    Keywords: Kunststoffabfall ; Meeresverschmutzung ; Artensterben
    Description / Table of Contents: Herausgeberinfo: A new report commissioned by WWF provides the most comprehensive account to date of the extent of plastic pollution in the world's oceans. comprehensive account of the extent of plastic pollution in the oceans. oceans, its impact on marine species and ecosystems, and how these trends are and the likely development of these trends in the future.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (221 Seiten) , Illustrationen
    ISBN: 9783946211464
    Language: English
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  • 2
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The prevalence of anastomotic strictures in esophageal anastomoses provides us with limited information about the anastomotic healing process. This prospective study evaluates the exact esophageal anastomotic diameters in 256 patients who underwent esophagectomy and esophagogastrostomy without pyloroplasty (n= 107) or total gastrectomy and Roux reconstruction (n= 149). No perioperative chemoradiotherapy was given. Anastomotic strictures and diameters were assessed during endoscopy by a separately inserted (inflated to the anastomotic width) balloon catheter. The anastomotic diameters increased significantly during the first postoperative year in the esophagectomy (p= 0.001) and gastrectomy (p 〈 0.001) groups. The anastomoses in the gastrectomy group were significantly wider than those in the esophagectomy group 3 (25.7 versus 19.9 mm), 6 (28.5 versus 22.0 mm), and 12 (30.5 versus 23.3 mm) months after surgery (p 〈 0.001). Neither the anastomotic site (neck or chest) in the esophagectomy group (p= 0.176) nor that in the gastrectomy group (abdomen or chest) (p= 0.577) influenced the anastomotic diameter. Benign anastomotic strictures were most frequently found after 3 months and after esophagectomy. Esophagojejunostomies performed with 2 linear stapling devices or cartridge size 28 mm showed the widest anastomoses with only 1 stricture. Esophagogastric anastomoses following esophagectomy are narrower and develop more strictures than esophagojejunal anastomoses after total gastrectomy, but both dilate during the first year.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1530-0358
    Keywords: Colonic anastomoses ; Fibrin glue ; Staples ; Sutures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 10 pigs a nonsutured, glued colonic anastomosis was constructed with a modified stapling device without staples and compared with an EEA-stapled anastomosis and a one-layer-sutured anastomosis concerning radiologic appearance, breaking strength, circulation, and collagen concentration.141Ce-labeled microspheres were used for measurements of the anastomotic blood flow before the animals were sacrificed on the 4th postoperative day. The breaking strength was recorded and an anastomotic index calculated. No leakage was found. The anastomotic width did not differ between the groups, but the interindividual variation was more prominent in the sutured group. The handsewn and stapled anastomoses were stronger than the glued anastomosis (P=0.0009 and 0.0054, respectively). There was an increase in the anastomotic circulation in all of the anastomoses, but no differences were seen between groups. The collagen concentration was independent of the technique used.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Diseases of the colon & rectum 35 (1992), S. 892-896 
    ISSN: 1530-0358
    Keywords: Small bowel anastomosis ; Colonic anastomosis ; Stapling devices ; Microcirculation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To determine the safety of intersecting staple lines, 22 pigs were operated upon with a functional end-to-end enteroanastomosis 40 cm distal to the ligament of Treitz using linear stapling devices. The procedure was repeated on the colon, where a colocolostomy was created. The blood flow at intersecting staple lines and single-row staple lines for each anastomosis was studied with the reference organ method 24 hours after the first operation. The purpose was to evaluate whether there is a reduction in blood flow at the site of intersecting staple lines, causing an increased risk for anastomotic leakage. The reduction in mean blood flow in crossing compared with noncrossing staple lines was 6 percent (−5–17 percent) for small bowel anastomoses and 7 percent (−6–19 percent) for colonic anastomoses. An equivalence test showed that, if a reduction in blood flow exists between crossing and noncrossing staple lines, it is most likely less than 30 percent (P 〈0.001) for both small bowel and colonic anastomoses. This experimental study demonstrates that intersecting staple lines in small bowel and colonic anastomoses do not reduce anastomotic blood flow to a dangerous level.
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 2024-02-07
    Description: A new report commissioned by WWF provides the most comprehensive account to date of the extent to which plastic pollution is affecting the global ocean, the impacts it’s having on marine species and ecosystems, and how these trends are likely to develop in future. The report by researchers from the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) reveals a serious and rapidly worsening situation that demands immediate and concerted international action: ● Today almost every species group in the ocean has encountered plastic pollution, with scientists observing negative effects in almost 90% of assessed species. ● Not only has plastic pollution entered the marine food web, it is significantly affecting the productivity of some of the world’s most important marine ecosystems like coral reefs and mangroves. ● Several key global regions – including areas in the Mediterranean, the East China and Yellow Seas and Arctic sea ice – have already exceeded plastic pollution thresholds beyond which significant ecological risks can occur, and several more regions are expected to follow suit in the coming years. ● If all plastic pollution inputs stopped today, marine microplastic levels would still more than double by 2050 – and some scenarios project a 50-fold increase by 2100.
    Type: Book , NonPeerReviewed
    Format: text
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  • 6
    Publication Date: 2021-01-25
    Description: Plastic pollution has become an increasing environmental threat, and means to mitigate it need to be developed. Since Taiwan has introduced numerous policies to reduce plastic use and pollution, we here review the strategies, actions, and policies by Taiwan’s stakeholders to reduce plastic use and pollution. The information was obtained through a literature review and expert knowledge. We first provide some historical background about the development of environmental issues in Taiwan over the last few decades. We then review the main contributions of each stakeholder (ENGOs, media, government, and industry) to the plastic pollution problem during Taiwan’s last three national governments. During the 2000–2008 government phase, ENGOs learned cleanup, monitoring, and outreach methods which they used to raise public awareness. The 2008–2016 government phase was characterized by ENGOs learning more scientific methods and increasing public outreach. The media began to report on this issue, while the government drifted with few responses. The current government phase has been characterized by continued ENGO activities and a sudden explosion of media interest; this coincided with a much more active and positive government approach which culminated in an ambitious, unprecedented, and wide-ranging 10-year Action Plan which should greatly advance source reduction and removal of plastic waste, scientific monitoring and research, and public outreach. Due to the long-time efforts by ENGOs to influence other stakeholders, Taiwan has become a relatively successful example of how to tackle the plastic pollution problem which may inspire a more concerted effort by other governments using Taiwan as a blueprint.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 7
    Publication Date: 2020-12-14
    Description: Coronavirus disease 2019 (COVID-19) characterized by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has created serious concerns about its potential adverse effects. There are limited data on clinical, radiological, and neonatal outcomes of pregnant women with COVID-19 pneumonia. This study aimed to assess clinical manifestations and neonatal outcomes of pregnant women with COVID-19.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 8
    Publication Date: 2021-03-05
    Description: The Anthropocene causes many massive and novel impacts, e.g., on migratory birds and their habitats. Many species of migratory birds have been declining on the Palearctic-African flyway in recent decades. To investigate possible impacts on a continental scale, we used 18 predictors extracted from 16 publicly available GIS layers in combination with machine learning methods on the sub-Saharan distributions of 64 passerine migrant species. These bird species were categorized as having experienced a ‘large decline’ (n = 12), a ‘moderate decline’ (n = 6) or ‘no decline’ (n = 46) based on European census data from 1970-1990. Therefore, we present the first study for these species which uses publically available Open Access GIS-data and a multivariate (n = 18) and multi-species (n = 64) machine learning approach to deduce possible past impacts. We furthermore modelled likely future human population change and climate change impacts. We identified three predictor themes related to the distributions and declines of these migratory birds: (I) locations, represented by African ecosystems, countries, and soil types; (II) human population pressures and land-use intensities, the latter represented by land-use categories, habitat area, and cropland proportion; (III) climatic predictors. This is the first study to relate migratory bird declines to human population pressures and land-use intensities using this type of analysis. We also identified areas of conservation concern, such as the Sahel region. Our models also predict that the declining trends of migratory birds will continue into the foreseeable future across much of Africa. We then briefly discuss some wider conservation implications in the light of the increasing drivers of biodiversity change associated with the Anthropocene as well as some possible solutions. We argue that only comprehensive systemic change can mitigate the impacts on the migratory birds and their habitats.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 9
    Publication Date: 2021-01-26
    Description: Microplastics have already been detected in various human foods, especially seafood. This problem should be especially pertinent to the Taiwanese public because a relatively high proportion of people’s diet comes from seafood. Therefore, a pilot study of microplastic contamination of seafood products commonly consumed by Taiwanese people is presented. Six batches of three seafood species were examined for the presence of microplastics using FTIR spectroscopy. A total of 107 seafood individuals from three species (hard clam Meretrix lusoria, oyster Crassostrea gigas, Loligo squid Loliginidae spp.) weighing a total of 994 g yielded a total of 100 microplastic particles consisting of nine different polymer types. The most common polymer types were polypropylene, poly(ethylene:propylene:diene), and polyethylene terephthalate; we also detected six additional, but less common polymer types. A total of 91% of microplastic particles were fragments that likely originated from fragmented plastic debris which was then consumed by the seafood species; the remaining particles were fibers and a pellet. The mean number of microplastics kg−1 was 87.9 microplastics kg−1 across the three examined species. Given that the Taiwanese public average about 10 kg of seafood consumption per year, a few thousand microplastic particles are estimated to be annually consumed on average. The methodology of this pilot study can now be used to conduct examinations of more seafood species and samples.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 10
    Publication Date: 2021-10-26
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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