system of environment digestion of marine area with a pandurog

  • The Digestive Tract of Cephalopods: at the Interface ...

    2020-6-25 · Cephalopods are marine predators with most species actively hunting for their preys, while other are scavengers. Understanding the physiological adaptations of these fascinating and complex molluscs poses important challenges for several disciplines. Very little research has been done on the digestive tract of cephalopod molluscs during the last 30 years, in contrast to many other areas of ...

  • Plastic contamination of a Galapagos Island (Ecuador) …

    The marine environment is not dominated by one major process (fluvial flow direction) such as in rivers. Physical processes such as wave action and tidal patterns are considered key to the accretion of microplastics on beaches, and further, aspect, slope, and shape of beach will likely play important roles in accumulation (Mathalon and Hill, 2014).

  • Flushing Toilets With Seawater Could Protect Marine …

    2015-11-10 · Flushing Toilets With Seawater Could Protect Marine Life Environment: Salty wastewater is less toxic to some marine organisms than freshwater, despite concern about disinfection by-products ...

  • Plastic as a Persistent Marine Pollutant | Annual …

    2018-8-1 · Synthetic organic polymers—or plastics—did not enter widespread use until the 1950s. By 2015, global production had increased to 322 million metric tons (Mt) year−1, which approaches the total weight of the human population produced in plastic every year. Approximately half is used for packaging and other disposables, 40% of plastic waste is not accounted for in managed landfills or ...

  • Health risk assessment of heavy metals in marine fish …

    2021-5-26 · Environmental pollution with toxic metals can lead to the possible contamination of the marine fish. We investigated the levels of As, Cd, Cr, Hg and Pb in 652 marine …

  • Precise measurement of Fe isotopes in marine …

    [en] A novel analytical technique for isotopic analysis of dissolved and particulate iron (Fe) from various marine environments is presented in this paper. It combines coprecipitation of dissolved Fe (DFe) samples with Mg(OH) 2, and acid digestion of particulate Fe (PFe) samples with double pass chromatographic separation.Isotopic data were obtained using a Nu Plasma MC-ICP-MS in dry …

  • Editorial Board

    Environmental Science, Energy, Climate and Environmental Complex System Modeling, Integrative assessment framework on renewable energy, Low-carbon development and its co-benefit to air pollution control, Big data analysis of energy storage and variable renewable sources, Emissions inventory on greenhouse gases and air pollutants, Energy system ...

  • The environmental sustainability of anaerobic …

    2012-10-1 · Anaerobic digestion is one of the most efficient biomass-to-energy routes. A saving of over 90% resources is achieved in most resource categories. Maximizing organic waste valorization is an environmentally sustainable strategy. Controlling emissions in digestion and agriculture induces an improvement up to 50%.

  • How Digestion Works: 5 Stages of Human Digestion

    2020-3-8 · Learn the five stages of digestion of the human digestive system. This article explains the whole process of digestion of food from ingestion to excretion from our body. This article explains how our digestive system digest fats, proteins, carbohydrates, …

  • Digestive System (Anatomy): How It Works

    2020-6-21 · Your digestive system is uniquely designed to turn the food you eat into nutrients, which the body uses for energy, growth and cell repair. Here''s how it works. Mouth. The mouth is the beginning ...

  • A long-term record of early to mid-Paleozoic marine …

    2021-7-7 · The extent to which Paleozoic oceans differed from Neoproterozoic oceans and the causal relationship between biological evolution and changing environmental conditions are heavily debated. Here, we report a nearly continuous record of seafloor redox change from the deep-water upper Cambrian to Middle Devonian Road River Group of Yukon, Canada. Bottom waters were largely …

  • Zhiwu (Drew) Wang | Civil & Environmental …

    2021-7-21 · A novel anaerobic digestion system with water recirculation to treat poultry litter for struvite and biogas production, USDA-NIFA (2019-67021-29945), $457,011, 2019-2022, with Zhu and Wu Synergistic integration of the biogranulation theory into advanced membrane bioreactors for value-added chemicals production from food waste, USDA-NIFA (2018 ...

  • Our polluted sea and disappearing marine life – The …

    2021-6-18 · Our polluted sea and disappearing marine life. Many lists, figures and numbers could be seen in the public media on the toxic materials supposed to be in the containers of the wrecked ship. Some materials have been discharged to sea. More may be in containers. Experts seem to assume that all the oil in the ship got burned in the fire.

  • The impact of scrubber discharge on the water quality …

    2020-7-23 · The International Maritime Organization (IMO) has set limits on sulphur content in fuels for marine transport. However, vessels continue to use these residual high-sulphur fuels in combination with exhaust gas cleaning systems (EGCS or scrubbers). Next to high sulphur, combustion of these fuels also results in higher emissions of contaminants including metals and PAHs.

  • Evidence of microplastic ingestion by cultured …

    2021-7-1 · Since the beginning of the century, plastic pollution in the marine environment has continuously gained attention and has become a major problem worldwide (GESAMP, 2019; UNEP, 2016).Yearly increasing numbers of production (PlasticsEurope, 2016, PlasticsEurope, 2018a, PlasticsEurope, 2018b, PlasticsEurope, 2019) and effects on marine wildlife due to entanglement, …

  • Pyrolyzed waste stream and biochar performance …

    2020-5-23 · The pretreated and stored food waste representative samples were collected for the continuous stirred tank reactor system of anaerobic digestion, and its entire experimental and operational procedure is shown in Table 2. The representative samples were digested in a 2-L-volume reactor labeled as CK (control reactor with only inoculum and food waste), CK1 (reactor with inoculum, food …

  • The health and environmental impacts of hazardous wastes

    In hazard score terms, the top 10-12 wastes exhibit hazard characteristics of biohazard (clinical and related waste), chromium-based toxicity/ eco-toxicity (wood preserving chemicals and hexavalent chromium compounds), explosivity, or persistent (mainly chronic) debilitative impacts widely in the environment as well as to human health (dioxins and furans, pesticides, PCBs and other halogenated ...

  • Environmental fluctuations accelerate molecular …

    2018-4-30 · Earth system models predict that global warming will result in significant declines in net primary production by marine phytoplankton throughout the 21st century (up to 20%) 1,2 driven by rising ...

  • Determination of lignin in marine sediment using …

    2013-1-23 · Abstract. Lignin serves as one of the most important molecular fossils for tracing Terrestrial Organic Matters (TOMs) in marine environment. Extraction and derivatization of lignin oxidation products (LOPs) are crucial for accurate quantification of lignin in marine sediment. Here we report a modification of the conventional alkaline cupric oxide ...

  • Effect of microplastics in water and aquatic systems ...

    2021-3-2 · Surging dismissal of plastics into water resources results in the splintered debris generating microscopic particles called microplastics. The reduced size of microplastic makes it easier for intake by aquatic organisms resulting in amassing of noxious wastes, thereby disturbing their physiological functions. Microplastics are abundantly available and exhibit high propensity for interrelating ...

  • Microbial community structure and dynamics during ...

    2013-4-28 · Microbial activity and composition of the biogas depend on the substrate type. The first three phases of anaerobic digestion—hydrolysis, acidogenesis, and acetogenesis—occur by distinct bacterial consortia, while the fourth step of methanogenesis is carried out …

  • Host responses of a marine bacterium, Roseobacter ...

    2011-10-28 · After the RDJLΦ1 suspension was added to the exponentially growing bacterial culture and incubated for 15 min, a single infected cell was autoimaged continuously using AFM in PBS, which mimic the marine environment. Every 4 min, an image of the changing morphology of the single infected R. denitrificans OCh114 cell was obtained. Despite the considerable efforts expended, we did not obtain …

  • The Digestive Tract of Cephalopods: at the Interface ...

    2020-6-25 · Nevertheless, the normal functioning of the digestive tract relates to important physiological aspects such as appetitive drive, signaling satiety, storage and coordinated oro-anal movement of ingested food and digesta, extra- and intra-cellular digestion, epithelial and intra-cellular transport, metabolism and incorporation of nutrients in the tissues.

  • Mohamed HASSAAN | Researcher | Doctor of …

    •B.Sc. in Marine Science, Faculty of Science, University of Al-Azhar, Cairo, Egypt (2005). •M.Sc. Thesis in Chemical Oceanography. Faculty of Science, University of Alexandria, Alexandria ...

  • Separation of microplastics from mass-limited …

    Under this condition, the SCS as a focal point in land-ocean interaction offers a unique opportunity to understand how anthropogenic stress acts on the marine environment. Microplastic is one of the major anthropogenic pollutants entering the marine environment especially via rivers ( Eerkes-Medrano et al., 2015 ; Hoellein et al., 2019 ), making the SCS an excellent study site for microplastic pollution.

  • Toward a global reference database of COI ...

    2021-5-3 · Characterization of species diversity of zooplankton is key to understanding, assessing, and predicting the function and future of pelagic ecosystems throughout the global ocean. The marine zooplankton assemblage, including only metazoans, is highly diverse and taxonomically complex, with an estimated ~28,000 species of 41 major taxonomic groups. This review provides a comprehensive …

  • Global distribution of microplastics and its impact on ...

    2020-5-7 · Microplastics are the major environmental health hazards spotted in almost all the marine habitats and biota of world. The earlier research on microplastics have mainly focused on studying abundance and distribution as well as impacts on organisms, while the existing review articles have reviewed on any one of the above aspects or the environmental fate of microplastics. The current …

  • The marine biome

    The marine biome. Reef fish and coral off Eniwetok atoll in the central Pacific. Marine regions cover about three-fourths of the Earth''s surface and include oceans, coral reefs, and estuaries. Marine algae supply much of the world''s oxygen supply and take in a huge amount of atmospheric carbon dioxide. The evaporation of the seawater provides ...

  • Detection of introduced and resident marine species …

    2019-8-9 · In Quantitative Monitoring of the Underwater Environment: Results of the International Marine Science and Technology Event MOQESM ''14 in Brest, France (eds Zerr, B. et al.) 31–46 (Springer ...

  • Durability and protection of timber structures in …

    2021-7-27 · Timber Structures in the Marine Environment. Timber structures in marine applications are exposed to harsh environments in the intertidal and subtidal zones (Tsinker 1995). These diverse environments include a wide range of deteriorating organisms such as bacteria, decay fungi, and marine wood borers (Oevering et al. 2001). In addition to the ...

  • Investigating the presence of microplastics in …

    2020-7-22 · Research on plastic in the marine environment has accelerated rapidly in the last decade, with numerous publications describing its impact on ecosystems and marine taxa 1,2,3,4,5,6,7.

  • Environments | Free Full-Text | An Investigation of the ...

    Anaerobic digestion (AD) has been recognised as an effective means of simultaneously producing energy while reducing greenhouse gas (GHG) emissions. Despite having a large agriculture sector, Ireland has experienced little uptake of the technology, ranking 20th within the EU-28. It is, therefore, necessary to understand the general opinions, ...