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131.
Sławomir Jaworski Mateusz Hinzmann Ewa Sawosz Marta Grodzik Marta Kutwin Mateusz Wierzbicki Barbara Strojny Krishna P. Vadalasetty Ludwika Lipińska André Chwalibog 《Environmental science and pollution research international》2017,24(27):21671-21679
With the rapid development of graphene synthesis and functionalization approaches, graphene and its related derivatives have shown great potential in many applications in material science, including biomedical applications. Several in vitro and in vivo studies clearly showed no definitive risks, while others have indicated that graphene might become health hazards. In this study, we explore the biocompatibility of graphene-related materials with chicken embryo red blood cells (RBC). The hemolysis assay was employed to evaluate the in vitro blood compatibility of reduced graphene, graphene oxide, and reduced graphene oxide, because these materials have recently been used for biomedical applications, including injectable graphene-related particles. This study investigated structural damage, ROS production and hemolysis of chicken embryo red blood cells. Different forms of graphene, when incubated with chicken embryo RBC, were harmful to cell structure and induced hemolysis. 相似文献
132.
Kalbarczyk Marta Szcześ Aleksandra Sternik Dariusz 《Environmental science and pollution research international》2021,28(2):1725-1733
Environmental Science and Pollution Research - Using the hen eggshells (biowaste) as a source of calcium and an environmentally friendly approach, the nanopowder composed of 74% of hydroxyapatite... 相似文献
133.
Mart�� Nadal N��ria Casacuberta Jordi Garcia-Orellana N��ria Ferr��-Huguet Pere Masqu�� Marta Schuhmacher Jos�� L. Domingo 《Environmental monitoring and assessment》2011,175(1-4):455-468
This study was aimed at assessing the levels of 210Pb and 210Po concentrations as well as gross alpha and beta activities in environmental monitors from the Catalan stretch of the Ebro River (Spain), potentially influenced by the presence of sediments with high concentrations of 238U and its decay chain daughters in the Flix reservoir. The chronic daily intake of 210Pb and 210Po through ingestion and inhalation of soils was evaluated, and the derived non-carcinogenic and carcinogenic risks were characterized. The low concentration of radioisotopes in soils resulted in a negligible annual effective dose. The levels of 210Pb and 210Po were determined in various groups of highly consumed food (fish and seafood, vegetables, fruits, and rice), and their dietary intake was calculated. The annual effective dose for the adult people from food intake was estimated in 3.3 × 10???2 mSv, mostly due to 210Po. Overall, the current radioactivity levels in the Catalan stretch of the Ebro River should not mean any additional health risk for the population living nearby. However, an integral assessment of the risks derived from exposure to other pollutants (e.g., metals and organochlorine compounds) jointly with radionuclides could be of great interest. 相似文献
134.
Marta Derlicka Houshang Shahnavaz 《International journal of occupational safety and ergonomics》2013,19(1):129-143
The study deals with working conditions in small private enterprises in Poland. Data come from 50 small enterprises from the Warsaw area. Information about the evaluation of working conditions and the existence of programmes for their improvement was gathered with the help of questionnaires addressed to employees and employers. The results constitute a ‘photograph’ of the Polish reality at the beginning of its transition from planned to market economy. The study revealed a lack of programmes for the improvement of working conditions in a significant number of the enterprises studied as well as little interest in occupational safety on the part of employers (owners).The study also revealed that all decisions—including those about the improvement of working conditions—were made by employers. Hence, the need for the widest possible dissemination of knowledge on occupational safety and the protection of human in the working environment with particular stress put on employers. Employers who are knowledgeable in this field and who are aware of its importance can significantly influence the improvement of working conditions in small enterprises. 相似文献
135.
During the Mesozoic, one of the most significant evolutionary processes was the secondary adaptation of tetrapods to life
in water. Several non-related lineages invaded from the terrestrial realms and from the oceans of the entire world. Among
these lineages, ichthyosaurs were particularly successful. Advance parvipelvian ichthyosaurs were the first tetrapods to evolve
a fish-shaped body profile. The deep skeletal modifications of their bodies, as well as their biology, depict advance ichthyosaurs
as the paradigm of secondary adaptation of reptiles to marine life. Functional inferences point to them as off-shore cruising
forms, similar to a living tuna, and some of them were capable of deep diving. Bone histology of some genera such as Temnodontosaurus, Stenopterygius, Ichthyosaurus, and Caypullisaurus, characterized by overall cancellous bone, is consistent with the idea of a fish-shaped ichthyosaurs as fast and far cruisers.
Here, we provide histological examination of the ribs of the Middle Jurassic parvipelvian Mollesaurus. Contrasting with the bone histology of other parvipelvian, Mollesaurus ribs are characterized by a compact and thick cortex. Our data indicate that the rib cage was heavy and suggest that not
all advanced ichthyosaurs were fast cruisers. The compact and dense ribs in these parvipelvian show that advance ichthyosaurs
were ecologically more diverse than previously thought and that the lightening of the skeleton reversed, as also occurred
in the evolution of cetacean, at least once along the evolutionary history of ichthyosaurs. 相似文献
136.
Katarina Kova? Marta Diez-Valcarce Peter Raspor Marta Hernández David Rodríguez-Lázaro 《Food and environmental virology》2012,4(4):209-212
The application of plant essential oils (EOs) (hyssop and marjoram) was evaluated for inactivation of non-enveloped viruses using murine norovirus and human adenovirus as models. No significant reduction of virus titres (TCID50) was observed when EOs were used at different temperatures and times. 相似文献
137.
León Orietta Soto Diana Muñoz-Bonilla Alexandra Fernández-García Marta 《Journal of Polymers and the Environment》2022,30(6):2314-2328
Journal of Polymers and the Environment - High-amylose maize starch (AS) was modified by graft copolymerization with sodium acid maleate and disodium maleate, using the KMnO4-NaHSO3 redox system,... 相似文献
138.
Eugenio Erika de Queiros Campisano Ivone Sampaio Pereira de Castro Aline Machado Coelho Maria Alice Zarur Langone Marta Antunes Pereira 《Journal of Polymers and the Environment》2022,30(4):1627-1637
Journal of Polymers and the Environment - The search for a straightforward technology for post-consumer poly(ethylene terephthalate) (PC-PET) degradation is essential to develop a circular economy.... 相似文献
139.
Iokiñe Rodríguez Bjørn Sletto Bibiana Bilbao Isabelle Sánchez-Rose Alejandra Leal 《Journal of Environmental Policy & Planning》2018,20(6):689-703
ABSTRACTThe concept of reflexive governance has to a large extent emerged from an increasing recognition of the need to consider different meanings of nature in the environmental policy-making process. Yet, so far, little attention has been paid to creating conditions for reflexive governance among different actors in intercultural settings, particularly in the context of environmental conflict and strong cultural change among indigenous peoples. This paper reviews three participatory research projects carried out in the Gran Sabana in Canaima National Park, Venezuela, which facilitated dialogue among indigenous people regarding their conflicting views of fire, in part by developing community-wide critical reflections on processes of cultural change and identity formations. These experiences suggest that once marginalized environmental knowledge is publicly acknowledged within the context of endogenous cultural processes, indigenous people feel more confident to engage in dialogue with other actors, thus allowing the emergence of reflexive environmental governance. 相似文献
140.
Alejandra Merlotto Germán Ricardo Bértola María Cintia Piccolo 《Journal of Coastal Conservation》2016,20(5):351-362
This contribution determines the coastal erosion risk of Necochea and Quequén cities, Necochea Municipality, Buenos Aires Province (Argentina). Both risk components, hazard and vulnerability, were assessed by the construction of indices. The hazard index is composed of four indicators: the erosion or accretion rate, coastal geomorphology, storm waves effects, and sediment supply. The vulnerability index is comprised of land use/cover, demographic, life conditions, and work and consumption indicators, and includes population census data such as demographic, education, health, sanitary, economic, production, work and population exposure aspects. The analysis concluded that coastal erosion risk ranges from very low to high along the study area, Quequén yielding the highest values. Risk levels vary in both cities based on the uneven spatial distribution of hazard. The risk assessment developed herein constitutes a practical and adequate tool that can be utilized with other elements and tasks in the elaboration of a coastal management program. 相似文献