Study of Temporal Trends of Pollution in the Russian Coastal Areas of the Black Sea by Nuclear and Related Analytical Techniques by Frontasyeva MV in Annals of Chemical Science Research
About the Interaction between water and Pb, Zn, Cu, Cd, Fe, Mn, Ba Mineralize...QUESTJOURNAL
ABSTRACT: One of the most important environmental concerns at mining sites is acid mine drainage (DAM), which is formed by the exposure sulfide minerals to air and water. The consequent production of sulfuric acid reduces the quality of water bodies and may allow the solubilization of potentially toxic metals such as Pb, Zn, Cu, Cd, Fe, Mn and Al. There is a range of laboratory procedures, classified as static and kinetic. Which have been used to understand the acidification and neutralization potencies of a rock through water/rock interaction process. These procedures seek to describe, quantify and predict the compositional changes of the solid and liquid phases in natural systems. The choice of techniques, methods, procedures and protocols requires the understanding of the problem to be solved or mitigated and is related to the specific geochemical and geological characteristics of the site to be analyzed. The elaboration of experimental procedures involves sampling strategies, selection of methodologies, (Accuracy, precision, sensitivity, speed, cost) and thus equipment and other necessary materials. This work presents the main static and kinetic procedures, highlighting its principles, advantages and limitations for selection and application in carbonate rocks rich in sulphide minerals. PH, Acid-Base Accounting and Net Acid Generation (NAG) are the static methods chosen. While the kinetic procedures chosen for the study of the natural enrichment of toxic metals in sulfate carbonate rocks is leaching columns, the Soxhlet system and reaction reactors. To provide more consistent drainage forecasts and hence better plans for the management of The results of different methods should be analyzed together.
Environmental Qualitative assessment of rivers sedimentsGJESM Publication
In this study, the concentrations of heavy metals (Ca, Zn, Cu, Fe, Mn, Ni) in thesediment of Shavoor River in Khuzestan Province in Iran has been investigated. After the library studies and field studies, six samples of water
and sediment were taken from the river in order to evaluate heavy metal pollution in sediments. To determine the
geochemical phases of metals in sediment samples the 5-step method was used for chemical separation. For quantitative assessment of the severity of contamination in the sediments, the geochemical indicators such as enriched factor (EF) and the accumulation index (Igeo) were used. Also, the statistical analyses including methods such as correlation analysis cluster analysis the (CA), were conducted.The results of the experiments showed that the organic matter deposited varies
with the average of 2.49 and ranges between 1.95% and 3.43%. Samples showed concentrations of metals such as calcium, iron, manganese, copper and nickel at all the sampling points were below the global average, whereas the concentration of copper was slightly higher than the global scale. Enriched factor (EF) was calculated for the elements revealed that heavy metals are classified as non-infected. The Geo-accumulation Index showed that the studied elements were uninfected peers. Based on the results of multivariate statistical analysis it was concluded that metals such as manganese, copper, iron, nickel and zinc are mainly natural and calcium metal is likely to have an organic origin.
Artifi cial wetlands are useful for wastewater treatment; however, relatively little is known of the effects of sewage on artifi cial wetland microbial community structure. Therefore, we assessed the effect of municipal sewage on microbial community diversity in surface water throughout an artifi cial wetland (Xiantao artifi cial wetland) treating municipal sewage. We analyzed the relationship between physicochemical parameters of surface water (i.e., Chemical Oxygen Demand (COD), Total Nitrogen (TN), Total Phosphorus (TP), and
NH4+-N) with microbial community structure (Illumina MiSeq sequencing followed by abundance indices). The results showed that the total microbial community in surface water was signifi cantly correlated with COD, TN, TP, and NH4
+-N (r = 0.764, 0.897, 0.883, 0.839, P < 0.05). In addition, the most abundant taxa were significantly correlated with COD (r = 0.803, P < 0.05). The relative abundance of rare operational taxonomic units in the more purifi ed water farther downstream was higher than in the polluted area, suggesting that rare groups were more sensitive to physicochemical parameters than abundant groups, and that the abundance of some bacteria could indirectly indicate the degree of aquatic pollution. Our results indicate that the responses of microorganisms in artificial wetlands to environmental conditions should be considered to ensure efficient treatment.
About the Interaction between water and Pb, Zn, Cu, Cd, Fe, Mn, Ba Mineralize...QUESTJOURNAL
ABSTRACT: One of the most important environmental concerns at mining sites is acid mine drainage (DAM), which is formed by the exposure sulfide minerals to air and water. The consequent production of sulfuric acid reduces the quality of water bodies and may allow the solubilization of potentially toxic metals such as Pb, Zn, Cu, Cd, Fe, Mn and Al. There is a range of laboratory procedures, classified as static and kinetic. Which have been used to understand the acidification and neutralization potencies of a rock through water/rock interaction process. These procedures seek to describe, quantify and predict the compositional changes of the solid and liquid phases in natural systems. The choice of techniques, methods, procedures and protocols requires the understanding of the problem to be solved or mitigated and is related to the specific geochemical and geological characteristics of the site to be analyzed. The elaboration of experimental procedures involves sampling strategies, selection of methodologies, (Accuracy, precision, sensitivity, speed, cost) and thus equipment and other necessary materials. This work presents the main static and kinetic procedures, highlighting its principles, advantages and limitations for selection and application in carbonate rocks rich in sulphide minerals. PH, Acid-Base Accounting and Net Acid Generation (NAG) are the static methods chosen. While the kinetic procedures chosen for the study of the natural enrichment of toxic metals in sulfate carbonate rocks is leaching columns, the Soxhlet system and reaction reactors. To provide more consistent drainage forecasts and hence better plans for the management of The results of different methods should be analyzed together.
Environmental Qualitative assessment of rivers sedimentsGJESM Publication
In this study, the concentrations of heavy metals (Ca, Zn, Cu, Fe, Mn, Ni) in thesediment of Shavoor River in Khuzestan Province in Iran has been investigated. After the library studies and field studies, six samples of water
and sediment were taken from the river in order to evaluate heavy metal pollution in sediments. To determine the
geochemical phases of metals in sediment samples the 5-step method was used for chemical separation. For quantitative assessment of the severity of contamination in the sediments, the geochemical indicators such as enriched factor (EF) and the accumulation index (Igeo) were used. Also, the statistical analyses including methods such as correlation analysis cluster analysis the (CA), were conducted.The results of the experiments showed that the organic matter deposited varies
with the average of 2.49 and ranges between 1.95% and 3.43%. Samples showed concentrations of metals such as calcium, iron, manganese, copper and nickel at all the sampling points were below the global average, whereas the concentration of copper was slightly higher than the global scale. Enriched factor (EF) was calculated for the elements revealed that heavy metals are classified as non-infected. The Geo-accumulation Index showed that the studied elements were uninfected peers. Based on the results of multivariate statistical analysis it was concluded that metals such as manganese, copper, iron, nickel and zinc are mainly natural and calcium metal is likely to have an organic origin.
Artifi cial wetlands are useful for wastewater treatment; however, relatively little is known of the effects of sewage on artifi cial wetland microbial community structure. Therefore, we assessed the effect of municipal sewage on microbial community diversity in surface water throughout an artifi cial wetland (Xiantao artifi cial wetland) treating municipal sewage. We analyzed the relationship between physicochemical parameters of surface water (i.e., Chemical Oxygen Demand (COD), Total Nitrogen (TN), Total Phosphorus (TP), and
NH4+-N) with microbial community structure (Illumina MiSeq sequencing followed by abundance indices). The results showed that the total microbial community in surface water was signifi cantly correlated with COD, TN, TP, and NH4
+-N (r = 0.764, 0.897, 0.883, 0.839, P < 0.05). In addition, the most abundant taxa were significantly correlated with COD (r = 0.803, P < 0.05). The relative abundance of rare operational taxonomic units in the more purifi ed water farther downstream was higher than in the polluted area, suggesting that rare groups were more sensitive to physicochemical parameters than abundant groups, and that the abundance of some bacteria could indirectly indicate the degree of aquatic pollution. Our results indicate that the responses of microorganisms in artificial wetlands to environmental conditions should be considered to ensure efficient treatment.
Impact of the salinity gradient on the mollusc fauna in flooded mine subsiden...EdytaSierka
Archives of Environmental Protection, 2014
This paper presents the impact of salinisation on the aquatic mollusc fauna in fl ooded mine subsidences in the Karvina region (Czech Republic). The results of the previous research on salinity in fl ooded mine subsidences show that some of them contain a high content of dissolved inorganic substances (above 1000 mg•l-1). These substances can affect the vegetation and animals occurring in the water and the surrounding area. The phylum of Mollusca was selected as a model group for the fi eldwork as it includes species with the proven bioindication potential. The occurrence of aquatic mollusc species was studied at 10 sites. The sites were selected based on the content of dissolved substances (the salinity gradient from <500 to >1000 mg•l-1. A total of 12 aquatic mollusc species were found, including one species identifi ed as a potential bioindicator of the negative effect of salinisation on aquatic biota. The analysis showed statistically signifi cant positive correlations between the content of dissolved inorganic substances and the presence of alien species Potamopyrgus antipodarum (J.E. Gray, 1843). The gradient of salinity signifi cantly affects the species composition of the mollusc fauna in fl ooded mine subsidences and may affect the biodiversity of this group.
After mining activities, the process of natural succession begins and plant communities which differ from the surrounding vegetation start to grow. Re-vegetation accelerate the development of soil processes in the quarries. The study of this vegetation and soil cover will help to develop ways for the remediation of man-made landscapes. The project studies an important scientific and technical issue about anthropogenic habitats, in which vegetation was completely removed.
The project won the 1st Prize in National Quarry Life Award in 2012 in Kazakhstan.
Read more: http://www.quarrylifeaward.com/project/rehabilitation-topsoil-production-induced-landscapes
Assessment of the Water Quality of Lake Sidi Boughaba (Ramsar Site 1980) Keni...IJRTEMJOURNAL
Sidi Boughaba Lake, part of a wetland complex of Morocco (Ramsar site in 1980) is located on
the Atlantic coast of northwestern Morocco, oriented NNE - SSW and located in an interdunal depression. The
existence of this body of water is due to the fact that the topographic surface is at a lower cost than that of the
piezometric surface of the coastal water table, rainwater and runoff water. The objective of this study is to
determine the physical and chemical characteristics of the waters of this lake. Thus, several water samples were
taken monthly in the period 2016-2017. Parameters such as: temperature, pH, electrical conductivity (EC),
chloride (Cl-
), turbidity (NTU), calcium (Ca2+) and magnesium (Mg2+). The results obtained show that the
distribution of the analyzed elements in Lake waters is quite variable between seasons, as well as between
stations. However, the analysis showed that the studied waters are very mineralized, with an EC between 7 g/l
and 14.8 g/l. This mineralization is essentially evaporitic and is controlled by various processes, such as
evaporation and marine influence by aerosol.
Assessment of the Water Quality of Lake Sidi Boughaba (Ramsar Site 1980) Keni...journal ijrtem
Sidi Boughaba Lake, part of a wetland complex of Morocco (Ramsar site in 1980) is located on
the Atlantic coast of northwestern Morocco, oriented NNE - SSW and located in an interdunal depression. The
existence of this body of water is due to the fact that the topographic surface is at a lower cost than that of the
piezometric surface of the coastal water table, rainwater and runoff water. The objective of this study is to
determine the physical and chemical characteristics of the waters of this lake. Thus, several water samples were
taken monthly in the period 2016-2017. Parameters such as: temperature, pH, electrical conductivity (EC),
chloride (Cl-
), turbidity (NTU), calcium (Ca2+) and magnesium (Mg2+). The results obtained show that the
distribution of the analyzed elements in Lake waters is quite variable between seasons, as well as between stations.
However, the analysis showed that the studied waters are very mineralized, with an EC between 7 g/l and 14.8
g/l. This mineralization is essentially evaporitic and is controlled by various processes, such as evaporation and
marine influence by aerosol.
Growth, gas exchanges and accumulation of inorganic matter of Populus nigra L...Innspub Net
Tunisia has made considerable efforts to solve major environmental problems. Reforestation of vast marginal
spaces with appropriate species, such as poplar, is one of the economic and environmental challenges (I-488). The fast-growingof this rupicolous species has a high specific versatility in its use. However, its need for water will limit their use in reforestation in areas where water resources are scarce. To cope with this situation, the use of unconventional water resources, including wastewater treatment, is a promising way to increase domestic
production of wood. Thus, the treated wastewater is valued as a source of unquestionable water, but also as a
source of nutrients. These plants were raised under non-binding for four months and divided into two lots
irrigated daily to field capacity with (i) potable water (control : T) and (ii) with treated waste water (TWW).
Biomass production, gas exchange and some mineral ions were measured during the experiment, in summer. Our results indicate that irrigation with treated wastewater has submitted a substantially marked effect resulting in an increase of gas exchange. Furthermore, after 60 days, the accumulation of certain metal ions (Cd, Pb and Ni) has resulted in a major malfunction on gas exchange.
Seasonal Variations and Diversity of Marine Diatoms of Jegathapattinam and Ka...IJSRD
The present study entitled on Seasonal variations and diversity of plantonic marine diatoms of Jegathapattinam (Lat. 09º 95 N: Long. 79º 18 E) and Kattumavadi (Lat. 10º 13 N; Long.79º 22 E) South East Coast of India was carried out for a period of one year (from June 2011 to May2012).The study focuses attention on the survey, systematics of marine diatom diversity and the influence of physico-chemical factors on their seasonal distribution. A total of 52 species belonging to 38 genera of marine diatoms were recorded from both stations. The most common genera were Actinocyclus, Amphora, Bacteriastrum, Biddulphia, Chaetoceros, Coscinodiscus, Cyclotella, Diploneis, Gyrosigma, Licmophora, Melosira, Navicula, Nitzschia, Pleurosigma and Tropidoneis were present in the two stations. Higher values of diatom population density were found during summer at both stations. The seasonal distribution and abundance are discussed in relation to physico- chemical parameters.
Spatial variability of nutrients (N, P) in a deep, temperate lake with a low trophic level supported by global navigation satellite systems, geographic information system and geostatistics
Rainy seasonal analysis of Physico-chemical parameters of Mukungwa River at N...Agriculture Journal IJOEAR
Water availability and quality are important factors that determine not only where people can live, but also the quality of life. The Mukungwa river is affected by rainy season especially at Ngaru point before discharge in Nyabarongo river, where its physico-chemical properties are seasonally changed. This may cause serious problems on all forms of life in the river. Objective of this work was to assess the impacts of rainy season on physico-chemical properties of Mukugwa River before discharging into Nyabarongo River at Ngaru. The parameters such as pH, temperature, turbidity, electric conductivity, total dissolved solids (TSS), phosphates, nitrates, and ammonium were monitored in three rainy seasons: April, 2012; October, 2012 and May, 2017 respectively. In this research, pH, temperature, electric conductivity were analyzed in situ using multifunction pH-meter and others parameters, were analyzed in laboratory using electrometric, volumetric, turbidity tube and colorimetric methods. The measured values for each parameter in three seasons were analyzed using MS Excel, and then compared to their international standards for surface water delivered by World Health Organization (WHO). The findings showed high variation of TSS (134mg/l, 178mg/l, and 582mg/l), turbidity (322NTU, 317NTU and 1560NTU) and ammonium (0.498mg/L, 0.536mg/L and 0.78mg/L) in three rainy seasons assessed. The quality of Mukungwa River needs prevention measures in order to control its pollution by erosion.
Aspects of the Geomorphology and Limnology of some molluscinhabited freshwate...iosrjce
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) multidisciplinary peer-reviewed Journal with reputable academics and experts as board member. IOSR-JESTFT is designed for the prompt publication of peer-reviewed articles in all areas of subject. The journal articles will be accessed freely online
Do submerged plants improve the water quality in mining subsidence reservoirs?EdytaSierka
Applied Ecology and Environmental Research, 2020
This paper provides an analysis of the effect of submerged vegetation on the physicochemical parameters of water with particular regard to transparency in mining subsidence reservoirs (MSR). The research encompassed 8 subsidence reservoirs with a diversified structure of submerged plants in the littoral zone. It has been proven that reservoirs where submerged vegetation coverage is greater than 25% of the water surface area are characterized by significantly greater transparency of water. High water transparency is desirable due to a greater utility value of reservoirs and their biologic diversity. The results from this research indicate that supporting the development of submerged vegetation in mining subsidence reservoirs may be an effective method for improving the water quality of such reservoirs.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
— The formation, species composition and functional role of red algae were studied in the Black Sea's coastal zone. In sublittoral plant communities, red algae are dominant both by their number of species in the phytocenosis and by their active thallus-the one that ensures their high metabolism. Algae with a large specific surface area of thallus can accumulate heavy metals in higher concentrations. In the paper, we discuss possibilities of using red algae as biomarkers of marine pollution, and as bio filters in the processes of water natural.
Impact of the salinity gradient on the mollusc fauna in flooded mine subsiden...EdytaSierka
Archives of Environmental Protection, 2014
This paper presents the impact of salinisation on the aquatic mollusc fauna in fl ooded mine subsidences in the Karvina region (Czech Republic). The results of the previous research on salinity in fl ooded mine subsidences show that some of them contain a high content of dissolved inorganic substances (above 1000 mg•l-1). These substances can affect the vegetation and animals occurring in the water and the surrounding area. The phylum of Mollusca was selected as a model group for the fi eldwork as it includes species with the proven bioindication potential. The occurrence of aquatic mollusc species was studied at 10 sites. The sites were selected based on the content of dissolved substances (the salinity gradient from <500 to >1000 mg•l-1. A total of 12 aquatic mollusc species were found, including one species identifi ed as a potential bioindicator of the negative effect of salinisation on aquatic biota. The analysis showed statistically signifi cant positive correlations between the content of dissolved inorganic substances and the presence of alien species Potamopyrgus antipodarum (J.E. Gray, 1843). The gradient of salinity signifi cantly affects the species composition of the mollusc fauna in fl ooded mine subsidences and may affect the biodiversity of this group.
After mining activities, the process of natural succession begins and plant communities which differ from the surrounding vegetation start to grow. Re-vegetation accelerate the development of soil processes in the quarries. The study of this vegetation and soil cover will help to develop ways for the remediation of man-made landscapes. The project studies an important scientific and technical issue about anthropogenic habitats, in which vegetation was completely removed.
The project won the 1st Prize in National Quarry Life Award in 2012 in Kazakhstan.
Read more: http://www.quarrylifeaward.com/project/rehabilitation-topsoil-production-induced-landscapes
Assessment of the Water Quality of Lake Sidi Boughaba (Ramsar Site 1980) Keni...IJRTEMJOURNAL
Sidi Boughaba Lake, part of a wetland complex of Morocco (Ramsar site in 1980) is located on
the Atlantic coast of northwestern Morocco, oriented NNE - SSW and located in an interdunal depression. The
existence of this body of water is due to the fact that the topographic surface is at a lower cost than that of the
piezometric surface of the coastal water table, rainwater and runoff water. The objective of this study is to
determine the physical and chemical characteristics of the waters of this lake. Thus, several water samples were
taken monthly in the period 2016-2017. Parameters such as: temperature, pH, electrical conductivity (EC),
chloride (Cl-
), turbidity (NTU), calcium (Ca2+) and magnesium (Mg2+). The results obtained show that the
distribution of the analyzed elements in Lake waters is quite variable between seasons, as well as between
stations. However, the analysis showed that the studied waters are very mineralized, with an EC between 7 g/l
and 14.8 g/l. This mineralization is essentially evaporitic and is controlled by various processes, such as
evaporation and marine influence by aerosol.
Assessment of the Water Quality of Lake Sidi Boughaba (Ramsar Site 1980) Keni...journal ijrtem
Sidi Boughaba Lake, part of a wetland complex of Morocco (Ramsar site in 1980) is located on
the Atlantic coast of northwestern Morocco, oriented NNE - SSW and located in an interdunal depression. The
existence of this body of water is due to the fact that the topographic surface is at a lower cost than that of the
piezometric surface of the coastal water table, rainwater and runoff water. The objective of this study is to
determine the physical and chemical characteristics of the waters of this lake. Thus, several water samples were
taken monthly in the period 2016-2017. Parameters such as: temperature, pH, electrical conductivity (EC),
chloride (Cl-
), turbidity (NTU), calcium (Ca2+) and magnesium (Mg2+). The results obtained show that the
distribution of the analyzed elements in Lake waters is quite variable between seasons, as well as between stations.
However, the analysis showed that the studied waters are very mineralized, with an EC between 7 g/l and 14.8
g/l. This mineralization is essentially evaporitic and is controlled by various processes, such as evaporation and
marine influence by aerosol.
Growth, gas exchanges and accumulation of inorganic matter of Populus nigra L...Innspub Net
Tunisia has made considerable efforts to solve major environmental problems. Reforestation of vast marginal
spaces with appropriate species, such as poplar, is one of the economic and environmental challenges (I-488). The fast-growingof this rupicolous species has a high specific versatility in its use. However, its need for water will limit their use in reforestation in areas where water resources are scarce. To cope with this situation, the use of unconventional water resources, including wastewater treatment, is a promising way to increase domestic
production of wood. Thus, the treated wastewater is valued as a source of unquestionable water, but also as a
source of nutrients. These plants were raised under non-binding for four months and divided into two lots
irrigated daily to field capacity with (i) potable water (control : T) and (ii) with treated waste water (TWW).
Biomass production, gas exchange and some mineral ions were measured during the experiment, in summer. Our results indicate that irrigation with treated wastewater has submitted a substantially marked effect resulting in an increase of gas exchange. Furthermore, after 60 days, the accumulation of certain metal ions (Cd, Pb and Ni) has resulted in a major malfunction on gas exchange.
Seasonal Variations and Diversity of Marine Diatoms of Jegathapattinam and Ka...IJSRD
The present study entitled on Seasonal variations and diversity of plantonic marine diatoms of Jegathapattinam (Lat. 09º 95 N: Long. 79º 18 E) and Kattumavadi (Lat. 10º 13 N; Long.79º 22 E) South East Coast of India was carried out for a period of one year (from June 2011 to May2012).The study focuses attention on the survey, systematics of marine diatom diversity and the influence of physico-chemical factors on their seasonal distribution. A total of 52 species belonging to 38 genera of marine diatoms were recorded from both stations. The most common genera were Actinocyclus, Amphora, Bacteriastrum, Biddulphia, Chaetoceros, Coscinodiscus, Cyclotella, Diploneis, Gyrosigma, Licmophora, Melosira, Navicula, Nitzschia, Pleurosigma and Tropidoneis were present in the two stations. Higher values of diatom population density were found during summer at both stations. The seasonal distribution and abundance are discussed in relation to physico- chemical parameters.
Spatial variability of nutrients (N, P) in a deep, temperate lake with a low trophic level supported by global navigation satellite systems, geographic information system and geostatistics
Rainy seasonal analysis of Physico-chemical parameters of Mukungwa River at N...Agriculture Journal IJOEAR
Water availability and quality are important factors that determine not only where people can live, but also the quality of life. The Mukungwa river is affected by rainy season especially at Ngaru point before discharge in Nyabarongo river, where its physico-chemical properties are seasonally changed. This may cause serious problems on all forms of life in the river. Objective of this work was to assess the impacts of rainy season on physico-chemical properties of Mukugwa River before discharging into Nyabarongo River at Ngaru. The parameters such as pH, temperature, turbidity, electric conductivity, total dissolved solids (TSS), phosphates, nitrates, and ammonium were monitored in three rainy seasons: April, 2012; October, 2012 and May, 2017 respectively. In this research, pH, temperature, electric conductivity were analyzed in situ using multifunction pH-meter and others parameters, were analyzed in laboratory using electrometric, volumetric, turbidity tube and colorimetric methods. The measured values for each parameter in three seasons were analyzed using MS Excel, and then compared to their international standards for surface water delivered by World Health Organization (WHO). The findings showed high variation of TSS (134mg/l, 178mg/l, and 582mg/l), turbidity (322NTU, 317NTU and 1560NTU) and ammonium (0.498mg/L, 0.536mg/L and 0.78mg/L) in three rainy seasons assessed. The quality of Mukungwa River needs prevention measures in order to control its pollution by erosion.
Aspects of the Geomorphology and Limnology of some molluscinhabited freshwate...iosrjce
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) multidisciplinary peer-reviewed Journal with reputable academics and experts as board member. IOSR-JESTFT is designed for the prompt publication of peer-reviewed articles in all areas of subject. The journal articles will be accessed freely online
Do submerged plants improve the water quality in mining subsidence reservoirs?EdytaSierka
Applied Ecology and Environmental Research, 2020
This paper provides an analysis of the effect of submerged vegetation on the physicochemical parameters of water with particular regard to transparency in mining subsidence reservoirs (MSR). The research encompassed 8 subsidence reservoirs with a diversified structure of submerged plants in the littoral zone. It has been proven that reservoirs where submerged vegetation coverage is greater than 25% of the water surface area are characterized by significantly greater transparency of water. High water transparency is desirable due to a greater utility value of reservoirs and their biologic diversity. The results from this research indicate that supporting the development of submerged vegetation in mining subsidence reservoirs may be an effective method for improving the water quality of such reservoirs.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
— The formation, species composition and functional role of red algae were studied in the Black Sea's coastal zone. In sublittoral plant communities, red algae are dominant both by their number of species in the phytocenosis and by their active thallus-the one that ensures their high metabolism. Algae with a large specific surface area of thallus can accumulate heavy metals in higher concentrations. In the paper, we discuss possibilities of using red algae as biomarkers of marine pollution, and as bio filters in the processes of water natural.
Red Algae (Rhodophyta) in Biomonitoring of Coastal Ecosystems
Similar to Study of Temporal Trends of Pollution in the Russian Coastal Areas of the Black Sea by Nuclear and Related Analytical Techniques_Crimson Publishers
Physico-chemical parameters and macrobenthic invertebrates of the intertidal ...Angelo Mark Walag
Physico-chemical parameters and macrobenthic invertebrates of the intertidal zone of Gusa, Cagayan de Oro City, Philippines were assessed from March to May 2014. Water temperature, pH, salinity, dissolved oxygen, biological oxygen demand, and type of substrate were determined in the study were within the normal range. A modified transect-quadrat method was used in an approximately 14,000 m2 of study area. Seven hundred twenty seven individuals belonging to 15 species were found in the area. These organisms belong to four phyla namely: Mollusca, Arthropoda, Echinodermata, and Annelida. The three most abundant organisms found were Coenobita clypeatus, Ophiothrix longipeda, and Cypraea poraria with relative abundance of 73.86%, 4.13% and 3.71% respectively. Most of the macrobenthic fauna identified exhibited a clumped pattern of distribution, while the rest are randomly distributed. The species diversity of the area is 1.19 which is very low compared to reports from related studies.
Macrobenthic community-structure--an-approach-to-assess-coastal-water-polluti...Md. Monjurul Hasan
A research on the assemblages of benthic macro faunal community in the coastal areas of Bangladesh was
conducted during February-March, 2015 following the standard methods to assess the status of environmental
pollution. The abundance (r=0.846) and species richness (r=0.864) of the macrobenthic communities were
signifcantly influenced by the water salinity of the sampling sites (p ≤ 0.05). Both the study areas namely the
Bakkhali River Estuary and the Meghna River Estuary showing the highest (3909 ± 540 ind./m2) and lowest (2236
± 689 ind./m2) density of benthic macrofaunal abundance respectively might be considered as moderately polluted
areas according to the results obtained from Shannon-Wiener index of species diversity (2.69 ± 0.13 and 2.00 ± 0.11
respectively) and Margalef’s species richness (2.21 ± 0.43 and 1.36 ± 0.11 respectively). Therefore, it is plausible
that the macrobenthic community explained in the present study might be a key future outline to assess the status of
coastal water pollution of those concerned areas of Bangladesh.
Assessment on the Ecosystem Service Functions of Nansi Lake in ChinaIJERA Editor
The assessment of ecosystem service functions is one of the focused area in modern ecological and
environmental research. As a typical shallow macrophytic lake in China, Nansi Lake is selected as the study
area. Based the indicator system and assessment models established in this research, the ecosystem service
functions of Nansi Lake are assessed. The results show that the ecosystem service function of drinking water
source area/aquatic product supply/ecological habitat/entertainment and landscape/ water purification function of
the lakeside zone for Nansi Lake is assessed as medium (2.2)/good (3.5)/medium (3)/medium (2.55)/medium (3),
and the overall ecosystem service function of Nansi Lake can be considered as ―Medium‖. The eutrophication
control and ecological restoration of lakeside wetland need to be enhanced in the future.
IOSR Journal of Applied Chemistry (IOSR-JAC) is an open access international journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Fluctuation of NO3-N and PO4 Elements in The Traditional Pond Area at TidesIJAEMSJORNAL
Traditional pond technology depends on nature in management, such as filling and disposal of pond water utilizing the time of low and high tides. The food for traditional pond technology comes from nature. The availability of nutrients such as N and P greatly determines the productivity of pond. The study was aimed to determine the fluctuations of N and P elements in traditional pond areas at tides. This research was conducted with purposive sampling method and laboratory analysis for several water parameters. The results showed that pH ranged from 7 to 8 both at low tide and high tide. The average value of nitrate (NO3) from five locations was extended from 0.106 to 1.495 mg/l. The value of silica (Si) ranged from 5,287 to 10,876 mg/l in low tide. Orthophosphate at low tide ranged from 0.027 to 0.090 mg/l, the highest value was in the coast station and the lowest was in the sea station. Whereas the value of nitrate (NO3) and orthophosphate in high tide ranged from 0.830 to 1.495 mg/l and 0.039 to 0.090 mg/l. Nutrients were abundant enough to support the growth and development of primary producers. So, the waters in this region include fertile waters.
Diversity and abundance of Macrobenthos in a subtropical estuary, BangladeshAbdullaAlAsif1
Soft bottom macrobenthos are important component of the marine and coastal trophic chain. There has been sparse information regarding the distribution of soft bottom macrobenthos form the coastal water of Bangladesh. Consequently, the present study was an effort to reveal the diversity and abundance of macrobenthos in the Feni Estuary in a seasonal pattern together with the hydrological factors. A total of 17 taxa families of soft-bottom invertebrates were found over the two sampling seasons. The current study yielded a total number of 34,726 ind./m 2 (mean 2480ind./m 2) including 18,909ind./m 2 in wet season (mean 2682ind./m 2) and 15,817 ind./m 2 in dry season (2259ind./m 2). The highest density of soft-bottom invertebrates was in the wet season while the lowest number in the dry season. A total of 5 groups of macrobenthos were found over the two sampling seasons. The dominant group was Polychaeta that contributed 43.60% of the total soft-bottom invertebrates. The values of biodiversity indices were higher in dry season compare to the wet season in most of the sampling station during the study period.
Estuaries are well known for their potential in removing metal from fresh water to provide micro-nutrients to aquatic life. In the present investigation, we have tried to bring out the metal removal potential of estuaries during accidental spills. For this purpose artificial river water containing high concentration of Mn, Cu, Zn, Ni and Pb were mixed with sea water at different salinity regimes. Water samples were taken from a station on the main branch of Tajan River that flows in to the Caspian Sea. For this purpose, solutions with a concentration of 5 mg/L of each studied metal (Mn,Cu, Zn, Pb) were prepared in Tajan River water. The salinity regimes include 3, 6, 8, 10 and 11 ppt. It was noted that metal concentration decreased by increasing salinity. Metals were flocculated at different rates: Cu (88%) > Ni (86%) > Pb (84%) > Mn (74%).Thus, as average about 80% of total elemental content flocculates. Hence, it was concluded that a large amount of micro nutrients is carried by the river and flocculated in the estuary where the river water mixes with the sea water which may play a vital role in supplying nutrients to the aquatic animals. Cluster analyses have shown that Mn and Ni are governed by EC, pH and salinity.
The project’s aim is to promote the ecological education among school students and local people of Slatsy settlement by attracting them to the territory of the quarry. To make the process both interesting and useful they will be involved into a quest around the territory of the quarry. The main idea is to get people to learn more on biodiversity by playing and by arranging social activity like a photo exhibition, picture contest, designing of the ecology board game. The “Pechurki” quarry is going to be flooded as a part of the recultivation process; we propose to divide the area into two zones, one of which will be unavailable for humans to provide the place for mammals, birds, fish and other species common for the region. The other zone will be a good place to watch the animals from arranged watching stations.
The project won the International contest of the Quarry Life Award 2014 in the category “Biodiversity and Education”
Read more: http://www.quarrylifeaward.com/project/youth-view-quarry-nature
Determination of pH, Dissolved Oxygen, Sulphate, Phosphate and Total Hardness...Hanieh Farzaneh
Sampling of the Physico-chemical factors from two stations on the surface water of Kukkarahalli Lake in Mysore City-India was carried out biweekly over a period of 3 months of 2014. The aims were to determine some Physico chemical parameters of water pollution. Temperature was measured using mercury in glass thermometer. Dissolved oxygen was determined by modified Winkler azide method while Phosphate was determined by Vendo Molybdate Method, Estimation of Sulphate as Sulphur in sample by Nephelometric Method, measurements of total hardness by Complexometric Method. The result revealed that the major causes of water quality deterioration were related to excess usage of fertilizers and chemicals for increasing yield of the crop or releasing the sewage into the lake, due to cumulative effect of human activities where in sewage disposal oxygen is used in decomposing these organic water, eutrophication which causes algal bloom and therefore inability of oxygen to adequately dissolved in the water or the lentic nature of the site where was no serious upturns. As this Lake also used to be a source of water supply to the city of Mysore, and today is a house of different variety of birds, animals, plants and fishes it is very essential to stop sewage disposal and illegal excessive land encroachments to eliminate the eutropohication of the lake, which this results of the Physico-chemical examination of this lake could be helpful in the management of the lake for its water quality and fisheries.
Determination of pH, Dissolved Oxygen, Sulphate, Phosphate and Total Hardness...Hanieh Farzaneh
Sampling of the Physico-chemical factors from two stations on the surface water of Kukkarahalli Lake in Mysore City-India was carried out biweekly over a period of 3 months of 2014. The aims were to determine some Physico chemical parameters of water pollution. Temperature was measured using mercury in glass thermometer. Dissolved oxygen was determined by modified Winkler azide method while Phosphate was determined by Vendo Molybdate Method, Estimation of Sulphate as Sulphur in sample by Nephelometric Method, measurements of total hardness by Complexometric Method. The result revealed that the major causes of water quality deterioration were related to excess usage of fertilizers and chemicals for increasing yield of the crop or releasing the sewage into the lake, due to cumulative effect of human activities where in sewage disposal oxygen is used in decomposing these organic water, eutrophication which causes algal bloom and therefore inability of oxygen to adequately dissolved in the water or the lentic nature of the site where was no serious upturns. As this Lake also used to be a source of water supply to the city of Mysore, and today is a house of different variety of birds, animals, plants and fishes it is very essential to stop sewage disposal and illegal excessive land encroachments to eliminate the eutropohication of the lake, which this results of the Physico-chemical examination of this lake could be helpful in the management of the lake for its water quality and fisheries.
The study of physical oceanography helps in understanding all these aspects in detail. Let us see most of these factors and processes in our future modules. Mathematical models of all these processes are also developed using these phenomena and mechanisms. The individual aspects of all the elements of physical oceanography are to be studied in detail.
High scientific demand, sustainable management of sea
resources, assessment and monitoring of pollution sources and of
their environmental impact, urgency to understand how does the
biologic processes link to the Carbon cycle and how do they
impact climate: oceanic biologic parameters (primary production,
biomass, and pelagic populations) are in the depths of vital stakes
for our society sustainable development.
Today, Mercator-Ocean is strongly involved in producing
operational bulletins of the physical “blue” ocean. To use new
requirements, it is going to integrate the forecasting of the living
world seas’ component and become more “green”. A first quasireal
time demonstration phase will be launched in the beginning of
2006. LOBSTER biologic model will be integrated in the Mercator
operational chain. This new stage was made possible thanks to
the Bionuts research/operational collaboration. Five structures
contribute to this project: LEGOS (Toulouse), LEGI (Grenoble),
IPSL/OCEAN and IPSL/LSCE (Paris) and the GIP Mercator-
Ocean. In the News, Patrick Monfray & al. present us this project,
its stakes, as well as some recent results.
The three other Newsletter’s articles present an overview of the
Mercator associated research works on the “biology” thematic.
François Royer & al. are interested on the pelagic species’ spatial
dynamic, unavoidable stage for a better management of the sea
resources.
A toxic bloom of the cyanobacteria, Nodularia
spumigena has been reported in the Baltic Sea. On
July 24, 2003, SeaWiFS captured this view of the
blooming Baltic. (credits NASA)
In the scope of the Bionuts project, Leo Berline & al. have studied the assimilation impact (temperature, salinity, sea level)
on the biologic parameters of coupled biology/physical model. In fact, the confrontation of physical models to biology
constraints has revealed some negative effects of the assimilation scheme on the vertical processes performance. So,
improve them is a crucial stake for the biology/physical coupling.
At last, coupling between biologic and physical models is a great opportunity for Scientists to investigate how does the
dynamic impact the biology. Isabelle Dadou & al. have looked at the Rossby waves influence on the primary production.
Have a very good read!
Plankton diversity and aquatic ecology of a freshwater lake (L3) at Bharti Is...GJESM Publication
The Larsemann Hills range is an ice-free oasis on the Ingrid Christensen Coast of Princess Elizabeth
Land, East Antarctica, which includes Bharti Island, Fisher Island, McLeod Island, Broknes Peninsula, Stornes
Peninsula, and several other islands, promontories, and nunataks. The Larsemann Hills is an ice-free area of
approximately 50 km2, located halfway between the Vestfold Hills and the Amery Ice Shelf on the south-eastern
coast of Prydz Bay, Princess Elizabeth Land, East Antarctica. The ice-free area consists of two major peninsulas (Stornes and Broknes), four minor peninsulas, and approximately 130 near shore islands. The Larsemann Hills area contains more than 150 lakes at different Islands and peninsulas. Bharti Island of Larsemann Hills in east Antarctica was selected as a sampling site for the present study. Water sample was collected from a freshwater lake during XXXth Indian Scientific Expedition to Antarctica (ISEA) and analyzed for the physico-chemical parameters, major elements, trace metals and major plankton diversity in surface lake water by following standard methodology. The concentrations of metals Cu, Pb, Cd, Zn and Cr were measured using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Phytoplankton and zooplankton were also assessed in the aquatic ecosystem of Lake L3 at Bharti Island, Larsemann Hills over east Antarctica. Psychrophillic bacteria were found 71 cfu in lake water, while total bacterial count was found to be 5.4 × 102cfu.
Similar to Study of Temporal Trends of Pollution in the Russian Coastal Areas of the Black Sea by Nuclear and Related Analytical Techniques_Crimson Publishers (20)
Chemical Design, Synthesis and Bio-efficacy Screening of New Growth Inhibitor...CrimsonPublishersACSR
The present work aimed to find new growth inhibitors agents spodoptera littoralis (Boisd.), several
inhibitors structurally relevant to the insect growth regulator, Fenoxycarb and the naturally transpiring
juvenile hormone of insects were chemically designed, prepared and evaluated as anti-proliferative agents.
Epihalohydrins derivatives have been synthesized and their agricultural bio-efficacy as insecticides
against spodoptera littoralis (Boisd.). Insecticidal bio-efficacy data showed that that some compounds are
very active against spodoptera littoralis (Boisd.)
Recent cases of casualty of workers in rubber latex factories due to hydrogen sulfide call for urgent
attention to better understanding, prevention of damages in working and living in risky environments,
and promotion of public and labor awareness. Specific responsible organization here is the subcontractor
of latex factories. H2
S characteristics, sources and symptoms from exposure are emphasized. Proper
practice should be followed strictly along with better cooperation among experts for the main objective
in saving lives and greater safety in living and working.
Design, Synthesis and Structural Inspection of Some Novel Di- And Tri-Azometh...CrimsonPublishersACSR
In this study, NBA imine compound was synthesized via an easy one-pot condensation of 3-nitro-benzaldyhide with 2-amino benzoic acid in 1:1 ratio and DAPH imine compound derived from 2,6-diacetyl pyridine and phenyl hydrazine hydrochloride. Consequences of the newly synthesized compounds
hooked up with the aid of FT-IR, elemental analyses, 13C-NMR ,1H-NMR and digital spectral research.
Experiments had been consistent with their chemical structures. Theoretical DFT calculations had been
implemented to confirm the molecular geometry of the investigated chemo-sensors. The sensor property
of all organized imines had been tested upon addition of the metal ions, consisting of Cr(III) ,Fe(II) ,Co(II) ,
Ni(II) ,Cu(II) ,Zn(II) ,Mn(II), VO(II) and Pd(II) .The interactions among receptors and ions are effortlessly
monitored with the aid of UV-visible spectroscopy. DAPH receptor confirmed color modification from
blood red to excessive deep green color to Co(II) ,a yellow color to Cu(II) and different colors to different
ions. Where the NBA receptor showed color modification from light yellow to excessive deep orange color
to Fe(II), pale orange to Pd(II) and different colors for other ions.
Azomethine Metal Chelates as an Efficient Catalyst for Oxidation of Organic C...CrimsonPublishersACSR
Azomethine ligands and their metal chelates are flexible compounds synthesized from the condensation
of an amino compound with carbonyl compounds and extensively used for industrial purposes and also
show a broad range of biological efficiencies including antibacterial, antifungal, antiviral, antimalarial,
antiproliferative, anti-inflammatory, anticancer, anti-HIV, anthelminthic and antipyretic properties.
Azomethine metal chelates show excellent catalytic activity in diversity reactions. Over the past few
years, there have been many reports on their applications in homogeneous and heterogeneous catalysis.
The high thermal and moisture stabilities of many azomethine metal chelates were useful attributes for
their application as catalysts in reactions involving at high temperatures. Recent researches in oxidation
catalysis have focused on how to employ the metal-catalyzed oxidation of organic substrates. This review
concerns with the current developments for the oxidations of organic compounds.
With the objective of analyzing metal ions simultaneously in several samples which can be applied in
various areas, electrochemical methods based on anodic stripping voltammetry are prominent due to
the fact that their analytical performance can be increased by electrode modifications. The development
of electrodes and methods together with the availability of small and low cost instrument would be
beneficial for onsite analysis and makes it much more practical.
Botanic, Phytochemistry and Pharmacological Aspects of Phyllanthus Amarus Sch...CrimsonPublishersACSR
Botanic, Phytochemistry and Pharmacological Aspects of Phyllanthus Amarus Schum & Thorn as Powerful Tools to Improve its Biotechnological Studies by Maria Aparecida MM in Annals of Chemical Science Research
Properties of Zinc Phosphate Coatings on Carbon Steel Using a Thermostatic Ce...CrimsonPublishersACSR
Properties of Zinc Phosphate Coatings on Carbon Steel Using a Thermostatic Cell and a Mobile System by Reyes Astivia MJE, Torres JV*, Barrera GM and Díaz CB in Annals of Chemical Science Research
Characterization of Rubber Seed Shell and Kernel (Hevea brasiliensis) as Raw ...CrimsonPublishersACSR
Characterization of Rubber Seed Shell and Kernel
(Hevea brasiliensis) as Raw Materials for Coliquefaction with Low Rank Coal by Mohd Azlan Mohd Ishak*, Siti Nur Ain Mohd Hassan, Ali H Jawad and Khudzir Ismail in Annals of Chemical Science Research
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Astronomy Update- Curiosity’s exploration of Mars _ Local Briefs _ leadertele...
Study of Temporal Trends of Pollution in the Russian Coastal Areas of the Black Sea by Nuclear and Related Analytical Techniques_Crimson Publishers
1. Study of Temporal Trends of Pollution in the
Russian Coastal Areas of the Black Sea by Nuclear
and Related Analytical Techniques
Alexander NK1
, Olga Bunkova2
, Frontasyeva MV3
*, Pavel Nekhoroshkov3
,
Alexandra Kravtsova3
, Inga Zinicovscaia3
and Nikita Yushin3
1
Shirshov Institute of Oceanology, Russia
2
Faculty of Soil Science, Russia
3
Joint Institute for Nuclear Research, Russia
Introduction
The assessment of the biogeochemical state of the shallow water zone of the seas and the
coastal zone is an important fundamental scientific direction. Aquatic ecosystems exist under
enhanced anthropogenic pressure, which should be assessed by using modern analytical
techniques. At present, one of the essential directions of biogeochemistry is the assessment
of the mutual influence of various mineral elements on each other in natural and man-made
cycles. Due to the fact that the Black Sea coast is practically the only resort place in Russia,
the relevance of ecological and biological monitoring, including the analysis of soil, water,
bottom sediments and aquatic organisms in the coastal zone of the sea, become the primary
and urgent tasks of Russia and Krasnodar Region. The anthropogenic factor in environmental
pollution and the deterioration of the hydro-chemical indicators of the quality of the Black
Sea water becomes major topic of environmental analyses; its influence in some cases
has disastrous consequences for biota. In addition, the intensification of the technogenic
transformation of the Black Sea coastal zone, which has increased in recent years, leads to
Crimson Publishers
Wings to the Research
Research Article
*Corresponding author: Frontasyeva MV,
Joint Institute for Nuclear Research, Russia
Submission: May 13, 2019
Published: May 21, 2019
Volume 1 - Issue 2
How to cite this article: Alexander N, Olga
B, Frontasyeva M, Pavel N, Alexandra K, et
al. Study of Temporal Trends of Pollution
in the Russian Coastal Areas of the Black
Sea by Nuclear and Related Analytical
Techniques. Ann Chem Sci Res. 1(2).
ACSR.000511.2019.
Copyright@ Frontasyeva MV, This
article is distributed under the terms of
the Creative Commons Attribution 4.0
International License, which permits
unrestricted use and redistribution
provided that the original author and
source are credited.
1Annals of Chemical Science Research
Abstract
Ecological state assessments of coastal areas is a worldwide important task in management of the coastal
environment. The present study is focused on analysis of key patterns of elemental concentration levels
in aquatic organisms/bio-monitors from a model coastal area of the Black Sea at the Taman peninsula.
The objects of research were seawater and freshwater, bottom sediments, coastal soils and macrophytes
(algae and aquatic plants) of the Krasnodar Region, RF, (Cystoseira barbata, Cystoseira сrinita, Cladophora
seriace, Ulva rigida, Polysiphonia elongata, Enteromorpha intetinalis, Ceramium rubrum, Padina pavonica,
the species of higher hydrophytes: Zoostera noltii, Zoostera marina, Zannichellia palustris, Ruppia cirrhosa,
Stuckenia pectinata, Potamogeton pectinatus, Phragmites communis, Carex and Ceratophyllum demersum)
which were collected at different distances from the coast. Three complementary analytical techniques:
neutron activation analysis (INAA), atomic absorption spectrometry (AAS) and X-ray fluorescence
analysis (XRF) were used for determination of concentrations of 10-15 macro and 20-25-trace elements.
The study confirmed the uniformity in the character of concentrations/dispersion of elements by bottom
sediments in the model zones of the Russian Black Sea coastline, regardless of the increase in distance
from the coastline. All bio-monitors showed their own specificity in the accumulation of mineral elements.
Similar patterns of concentration and dispersion were found for different morphophysiological parts
of macrophytes (root system and supra-bottom green part) of all studied species. Sites of background,
polluted and in moderate pollution state among analyzed sites of the Russian coastal zone were proposed.
The observed key patterns of elemental accumulation in aquatic plants-bio-monitors, bottom sediments,
and soils may be used in the future coastal environmental management and special ecological studies.
This study was carried out in collaboration with the Faculty of Biology of Moscow State University and
Institute of Oceanography of Russian Academy of Sciences in the framework of the IAEA CRP “Study of
Temporal Trends of Pollution in Selected Coastal Areas by the Application of Isotopes and Nuclear Tools”
(Contract K41016).
Keywords: Bio-monitoring; Pollution; Soil; Bottom sediments; Aquatic vegetation; Taman peninsula;
NAA; AAS; XRF