Do single-use facemask users' care for the effects on the (marine) environment during the COVID-19 pandemic? Preliminary results from Greece

2021 ◽  
Vol 167 ◽  
pp. 112320
Author(s):  
Iosif Botetzagias ◽  
Chrysovaladis Malesios
Keyword(s):  
Marine Environment ◽  
Preliminary Results ◽  
Single Use

scholarly journals Palynology of the dinosaur beds of Tendaguru (Tanzania) — preliminary results

Fossil Record ◽  
1999 ◽  
Vol 2 (1) ◽  
pp. 171-183 ◽  
Author(s):  
E. Schrank
Keyword(s):  
Marine Environment ◽  
Aquatic Environment ◽  
Freshwater Algae ◽  
Preliminary Results ◽  
Rare Elements ◽  
Palynological Assemblages ◽  
Terrestrial Source ◽  
Marine Influence ◽  
Abundant Element ◽  
Angiosperm Pollen

The Tendaguru Beds, southeastern Tanzania, have yielded two palynological assemblages of Kimmeridgian to Tithonian age: (1) the <i>Anapiculatisporites-Densoisporites-Trisaccites</i> assemblage from the Middle Saurian Beds and (2) the <i>Barbatacysta-Pareodinia</i> assemblage from the overlying <i>Smeei</i> Beds. A third assemblage with <i>Rhizophagites</i> and rare angiosperm pollen from the Upper Saurian Beds is contaminated by recent and subrecent material. <br><br> The <i>Anapiculatisporites-Densoisporites-Trisaccites</i> assemblage is characterized by the presence of freshwater algae (<i>Ovoidites</i>), pteridopyhtic-bryophytic spores and gymnosperm (conifer) pollen, with <i>Classopollis</i> as the most abundant element. Among the rare elements of this assemblage is the questionable dinoflagellate <i>Mendicodinium</i>? <i>quadratum</i>, possibly a Kimmeridgian-Tithonian marker. The miospores show palaeobiogeographic links to Southern Gondwana, especially Madagascar, Australia, Argentina and India. Deposition of this assemblage took place in an aquatic environment with strong palynological influx from a terrestrial source and questionable marine influence. <br><br> The <i>Barbatacysta-Pareodinia</i> assemblage contains a considerable number of dinoflagellates suggesting deposition in a marine environment. The terrestrially-derived miospores are impoverished and dominated by conifer pollen, while pteridophytic-bryophytic spores form a very subordinate element or are absent. <br><br> Die Tendaguru-Schichten, Südost-Tansania, haben zwei palynologische Assoziationen, deren Alter als Kimmeridge bis Tithon interpretiert wird, geliefert. Die <i>Anapiculatisporites-Densoisporites-Trisaccites</i>-Assoziation stammt aus den Mittleren Saurierschichten, und die <i>Barbatacysta-Pareodinia</i>-Assoziation charakterisiert die darüberlagernden <i>Smeei</i>-Schichten. Eine dritte Vergesellschaftung mit <i>Rhizophagites</i> und seltenen Angiospermen-Pollen aus den Oberen Saurierschichten ist durch rezentes bis subrezentes Material kontaminiert. <br><br> Die <i>Anapiculatisporites-Densoisporites-Trisaccites</i>-Assoziation ist durch die Anwesenheit von Süßwasser-Algen (<i>Ovoidites</i>), Pteridophyten-Bryophyten-Sporen und Gymnospermen-Pollen (Koniferen) gekennzeichnet mit <i>Classopollis</i> als dem häufigsten Element. Zu den seltenen Elementen dieser Assoziation gehört der fragliche Dinoflagellat <i>Mendicodinium</i>? <i>quadratum</i>, der möglicherweise als leitend für das Kimmeridge-Tithon angesehen werden kann. Die Miosporen zeigen paläobiogeographische Verbindungen nach Südgondwana, besonders nach Madagaskar, Australien, Argentinien und Indien. Das Ablagerungsmilieu dieser Assoziation war aquatisch mit starker Zufuhr von terrigenem Material, während mariner Einfluß fraglich ist. <br><br> Die Dinoflagellaten-führende <i>Barbatacysta-Pareodinia</i>-Assoziation wurde in einem marinen Milieu gebildet, in dem die Zufuhr terrigener Palynomorphe reduziert und im wesentlichen auf Koniferen-Pollen beschränkt war, während Pteridophyten-Bryophyten-Sporen nur sehr untergeordnet vorkommen oder ganz fehlen. <br><br> doi:<a href="http://dx.doi.org/10.1002/mmng.1999.4860020113" target="_blank">10.1002/mmng.1999.4860020113</a>

scholarly journals Design of a serious game for children to raise awareness on plastic pollution and promoting pro-environmental behaviors

2021 ◽  
pp. 1-27
Author(s):  
Loukia Panagiotopoulou ◽  
Nora Cía Gayarre ◽  
Giulia Wally Scurati ◽  
Roberta Etzi ◽  
Gemma Massetti ◽  
...  
Keyword(s):  
Waste Management ◽  
Human Health ◽  
Marine Environment ◽  
Plastic Pollution ◽  
Environmental Behaviors ◽  
Production And Consumption ◽  
Great Production ◽  
Single Use ◽  
Global Concern ◽  
Definition Of

Abstract The massive presence of plastic in the oceans, both in form of large debris and micro-plastic, is raising global concern due to its serious effects on the marine environment and fauna, causing loss of biodiversity and potentially threatening human health. Even though this is due to poor waste management, the great production and consumption of single-use plastic is a significant exacerbating factor. Despite policies and bans can be effective measures, there is also the need to raise consumers' awareness, so they can make more sustainable choices when purchasing, using and, dismissing products. In particular, educating young citizens and encouraging them to engage in pro-environmental behaviors is a fundamental task to reach this goal. In this work, we present Contact from the future, a digital game on plastic pollution for children, to create awareness and stimulate pro-environmental behaviors, discussing the definition of objectives and requirements, as well as the design and development of the application.

Prospects for the use of used plastic products in the construction industry

2021 ◽  
Vol 7 (2) ◽  
pp. 284-290
Author(s):  
Ruslan Parazhutdinovich Aliev ◽  
Ilia Aleksandrovich Krevskii ◽  
Egor Alekseevich Simin ◽  
Maksim Olegovich Kirichenko
Keyword(s):  
Construction Industry ◽  
Marine Environment ◽  
New Products ◽  
Marine Ecosystem ◽  
Plastic Waste ◽  
The Body ◽  
Reliable Source ◽  
Single Use ◽  
Harmful Effects ◽  
Plastic Products

The waste generated by the use of single-use plastic products becomes extremely dangerous to the environment due to their large amount generated, which causes serious harm to both the environment and its inhabitants. The main victim of this threat is the marine environment. Plastic waste generated on land ends up in water bodies, where it causes harmful effects such as flooding and poisoning of animals in the marine ecosystem. Plastics in the marine environment that enter the body of fish are also harmful to human health if such fish are eaten, as this can cause cancer in humans. To find an effective way to manage this waste and improve the sustainability of the environment, different approaches to recycling plastic waste into new products are being explored. In particular, the use of plastic waste in construction will significantly improve the sustainability of the environment, as well as serve as a reliable source of materials for construction purposes.

An experimental approach to the determinants of biological water quality

1979 ◽  
Vol 286 (1015) ◽  
pp. 465-481 ◽  
Keyword(s):  
Water Quality ◽  
Marine Environment ◽  
Water Samples ◽  
Experimental Approach ◽  
Sea Water ◽  
Preliminary Results ◽  
Biological Water ◽  
Chemical Techniques ◽  
Swansea Bay ◽  
Biological Water Quality

A case is presented for the use of experimental bioassay techniques to detect and measure variations in water quality in the marine environment by exposing suitable organisms in the laboratory to water samples collected in the field. A technique is described which was developed for this purpose with the use of a clonal hydroid; preliminary results from Swansea Bay show that it is sensitive to the variations in water quality that occur there. Chemical techniques are being developed for use in conjunction with such bioassays to identify the kinds of contaminants responsible for a detected effect, and some preliminary experiments suggest that divalent metals and the volatile constituents of hydrocarbons can be removed selectively from sea water.

Simulation of Deployment Process of Junction Box

2013 ◽  
Vol 300-301 ◽  
pp. 294-300 ◽  
Author(s):  
Fan Yi Xia ◽  
De Jun Li ◽  
Ji Yuan Zhang
Keyword(s):  
Marine Environment ◽  
Dynamic Characteristics ◽  
Virtual Prototype ◽  
Correct Position ◽  
Preliminary Results ◽  
Scientific Support ◽  
Adams Software ◽  
Cabled Seafloor Observatory ◽  
Seafloor Observatory

Junction box is an important part of cabled seafloor observatory. And it should be deployed to correct position safely, smoothly and precisely. A model of virtual prototype simulation is put forward in this paper to analyze the dynamic characteristics of the deployment process in Marine Environment. The analysis is focus on the influence of different sea condition and different vibrating movement of ship caused by the wave, as well as the some important deploying parameters during the deployment process. The preliminary results of the simulation with ADAMS software provides scientific support for deployment system designers and operators to refer to.

scholarly journals Assessing the Diversity of Marine Bacterial β-Glucosidases by Capillary Electrophoresis Zymography

2001 ◽  
Vol 67 (10) ◽  
pp. 4896-4900 ◽  
Author(s):  
Jesús M. Arrieta ◽  
Gerhard J. Herndl
Keyword(s):  
Capillary Electrophoresis ◽  
Kinetic Parameters ◽  
North Sea ◽  
Marine Environment ◽  
Bacterial Communities ◽  
Environmental Samples ◽  
New Method ◽  
Preliminary Results ◽  
Fast Separation ◽  
Substrate Concentrations

ABSTRACT We propose a new method for the fast separation and detection of β-glucosidases in environmental samples. With this approach, β-glucosidases extracted from bacteria are evidenced by substrate-incorporated capillary electrophoresis (CE zymography) and their kinetic parameters can be determined by repeated injections using different substrate concentrations. Preliminary results obtained with natural bacterial communities from the coastal North Sea suggest that the diversity of β-glucosidases in the marine environment might be much higher than previously observed.

Long-Term Behavior of Embiez Archaeological Glass: Results after 1800 Years of Alteration in a Marine Environment

2006 ◽  
Vol 932 ◽  
Author(s):  
Stéphane Gin ◽  
Jean-Louis Chouchan ◽  
Danièle Foy
Keyword(s):  
Dissolution Rate ◽  
Surface Area ◽  
Marine Environment ◽  
Morphological Similarity ◽  
Preliminary Results ◽  
Glass Dissolution ◽  
Internal Surfaces ◽  
Different Temperatures ◽  
Long Term Behavior

ABSTRACTAn archaeological glass initially fractured and altered for 1800 years in a marine environment is now being examined by the CEA because of its strong morphological similarity to the nuclear glasses used for immobilization of long-lived radionuclides (i.e. the presence of fractures and cracks formed during cooling, which significantly increase the surface area accessible to water). The issue concerns glass alteration by water, and in particular the different behavior of the external surfaces in contact with a solution highly renewed and the internal surfaces, which constitute a much more confined medium.The preliminary results of this study are discussed. The cracks in the archaeological glass have been filled by crystallized alteration products formed jointly by elements from the glass and elements dissolved in seawater. The glass is distinctly less altered (by a factor of 10 to 100) on the internal surfaces generated by the cracks than on the external surfaces. The forward glass dissolution rate was measured at different temperatures on pristine glass samples and under conditions that allowed us to estimate the dissolution rate of the external surfaces under realistic conditions at about 200 μm in 1800 years. The implications of this study are then discussed.

Sign in / Sign up

Export Citation Format

Share Document