scholarly journals Assessment of aquatic genotoxicity of the Lake Sevan basin, Armenia using natural bioindicators

2021 ◽  
Vol 4 ◽  
Author(s):  
Anzhela Sargsyan ◽  
Anna Simonyan ◽  
Galina Hovhannisyan ◽  
Bardukh Gabrielyan ◽  
Rouben Aroutiounian
Keyword(s):  
Water Pollution ◽  
Dna Damage ◽  
Chemical Analysis ◽  
Water Samples ◽  
Primary Concern ◽  
Reference Sites ◽  
The South ◽  
Lake Sevan ◽  
The Republic ◽  
The Village

Water pollution can cause genomic instability, thereby threatening aquatic wildlife and human health․ For a correct assessment of the impact of the mixture of pollutants, chemical analysis of environmental contaminants should be simultaneously applied with genotoxicity assays. The сomet assay is a sensitive, versatile and extensively used method for genotoxicity assessment in a water environment and was successfully applied in aquatic wild species, including fish and crayfish. Earlier we investigated the genotoxicity of waters of the Lake Sevan basin (Simonyan et al. 2016, Simonyan et al. 2019)․ Lake Sevan is the largest lake of the Caucasus Region, situated in the Republic of Armenia, in the Gegharkunik Province. Water pollution in the lake is a result of both anthropogenic and natural pressures. A combination of comet assay (Tice et al. 2000) and chemical analysis was applied for evaluation of water genotoxicity using gibel carp Carassius auratus gibelio and crayfish Astacus leptodactylus as sentinel organisms. Fish and water samples were collected from the south–southwest of the village Shorzha (40028′33″N and 45014′22″E), Peninsula of Lake Sevan (40033′46″N and 45001′37″E), the estuaries of the Rivers Gavaraget (40025′12″N and 45009′53″E) and Dzknaget (40036′55″N and 44058′13″E). Сrayfish and water samples were collected from the estuary of the River Masrik (40013′25″N and 45038′21″E) and near the villages of Artanish (40027′19″N and 45025′12″E) and Tsapatakh (40024′34″N and 45028′22″E). According to the chemical analysis of waters, the south–southwest of the village Shorzha and the estuary of the River Masrik were chosen as reference sites․ The content of contaminants in water was analyzed according to the standard methods in the Environmental Impact Monitoring Center, Ministry of Environment of the Republic of Armenia. The obtained results showed that the levels of DNA damage were significantly higher in both species in polluted areas than in reference sites. A significant positive correlation between DNA damage in C. auratus gibelio and contents of Al, Fe, Cu and Mn in water was shown. DNA damage in A. leptodactylus correlated with Al, Fe, Cu and Mo. C. auratus gibelio and A. leptodactylus were found to be sensitive mostly to the same pollutants, which indicate that these metals may be of primary concern as contaminants of the studied aquatic environment. Thus, the current study indicates that C. auratus gibelio and A. leptodactylus are sensitive bioindicators for monitoring of water pollution in the Lake Sevan basin.

Status of Heavy Metal Contaminations of Lake Water of Dhaka Metropolitan City

2013 ◽  
Vol 5 (2) ◽  
pp. 345-348 ◽  
Author(s):  
MAA Mokaddes ◽  
BS Nahar ◽  
MA Baten
Keyword(s):  
Water Pollution ◽  
Heavy Metal ◽  
Chemical Analysis ◽  
Natural Resources ◽  
Lake Water ◽  
Water Samples ◽  
Ph Value ◽  
Central Laboratory ◽  
Metropolitan City

A study was conducted to evaluate level of water pollution and its influence on heavy metal contaminations of lake water of Dhaka metropolitan city. The water samples were collected from lakes of Dhaka metropolitan city during February to March, 2008. The chemical analysis of water samples included pH, EC, As, Cu, Mn, 'ln. Pb and Cd. Analysis of lake water samples was done at the Central Laboratory of Bangladesh Agricultural University, Mymensingh. The concentrations of heavy metal of lake water were recorded as: in case of pH = 6.95, in case of EC = 22.44 (?scm-1), in case of Cu = 0.018 ppm, in case of Zn = 0.274 ppm, in case of Mn = 0.084 ppm, in case of As = 0.002 ppb, in case of Pb = 0.002 ppm and in case of Cd = 0.044 ppm. The pH value of lakes water range from 5.34 to 7.68, an indication of slightly acidic to alkaline in nature. The average EC value for lakes water ranged from 17.61 to 34.61 ?Scm-1 where EC value varied from 14.24 to 33.48 ?Scm-1 in the lake water.DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14841 J. Environ. Sci. & Natural Resources, 5(2): 345-348 2012

Epitaphic Nation: The Problem of the South and Necropolitics in Early Modern Vietnamese National Literature

PMLA ◽  
2011 ◽  
Vol 126 (3) ◽  
pp. 685-692
Author(s):  
Nguyễn-Võ Thu-Hương
Keyword(s):  
Early Modern ◽  
Literary History ◽  
State Violence ◽  
The South ◽  
The North ◽  
Literary Genealogy ◽  
The Republic ◽  
The Village ◽  
North And South ◽  
The Church

Whoever goes down to Bà Ria and happens by the cemetery in the sand at the village of Phu'ó'c Lě, I beg you to go in that cemetery and look for the grave with a cross painted half black, half white, by the side of the Church of Martyrs–to visit that grave lest it become pitiful. Because it has been two years since anyone visited or cast as much as a glance.—Nguyễn Trong QuanSO opens nguyễn trọng quản's thẩy lazaro phiển (“lazaro phiển” 22). The narrative begins at an obscure gravesite evokes the life of a man as both victim of state violence and perpetrator of private deaths. Lazaro Phiển is a ictional work written in the romanized script and was published in Saigon in 1887 in a novelistic format almost forty years before Hoàng Ngọc Phách's Tố Tâm. Yet the latter, published in Hanoi in 1925, is oten touted in official literary history as the first modern Vietnamese novel. Although Nguyễn Trọng Qu.n's narrative revolves around the recovery of an elided story, the author could not have anticipated the elision of his work from a nationalist literary genealogy that locates the origin of modern Vietnamese literature in the North. he elision was part of a general omission of works from the South in the last decades of the nineteenth century and irst two decades of the twentieth. his genealogy was by no means limited to the Democratic Republic of Vietnam in the North but was also perpetuated in the Republic of Vietnam in the South ater independence and the partitioning of the country into North and South in 1954

scholarly journals Paleohydrogeological and geophysicalresearch aimed at reonstruction of paleoclimate in lake Sevan basin, Armenia

2019 ◽  
Author(s):  
Р.С. Минасян ◽  
Дж.К. Карапетян ◽  
Р.А. Карамян ◽  
А.А. Игитян ◽  
А.А. Геворгян ◽  
...  
Keyword(s):  
Structural Features ◽  
Water Area ◽  
Tectonic Subsidence ◽  
Main Role ◽  
The South ◽  
Natural Conditions ◽  
Lake Sevan ◽  
Bathymetric Data ◽  
Lake Waters ◽  
The Village

целях определения природных условий для восстановления палеоклимата бассейна оз. Севан (Армения) проанализированы и обобщены материалы, относящиеся к геоморфолого-тектоническому и палеогидрогеологическому строению прибрежной и акваториальной частей озера. Проведены специальные геофизические исследования палеогидрогеологической направленности: выполнено палеогидрогеологическое районирование водосборного бассейна, получены данные о строении его палеорельефа, установлены ряд палеорусел, определены основные пути сосредоточенного движения и места разгрузки подземных вод, в томчисле и в пределах акватории озера. По палеомагнитным исследованиям получены данные о датировке разреза терригенных отложений прибрежных частей озера. Выполненные в акваториальной части Малого Севана сейсмоакустические исследования позволили составить геофизические разрезы, характеризующие особенности строения донных отложений озера. В целом полученные данные будут использованы при уточнении возраста лимнологических отложений  прибрежных и донных частей озера, для установления палеогидрогеологических, геоэкологических и палеогеографических особенностей его развития в голоцене в связи с попыткой реконструкции палеоклимата изучаемого региона. In order to determine the natural conditions for the restoration of the paleoclimate of the lake Sevan basin (Armenia) the materials related to the geomorphological-tectonic and paleohydrogeological structure of the inshore and aquatic parts of the lake were analyzed and summarized. Special geophysical studies of the paleohydrogeological orientation have been carried out: the paleohydrogeological zoning of the catchment area has been carried out, data on the structure of its paleorelief have been obtained, a number of paleochannels have been identified, the main routes of concentrated movement and the groundwater discharge area have been determined, including within the lake waters. Data on the section of terrigenous deposits dating of the lake coastal parts were obtained according to paleomagnetic studies The seismic-acoustic wave studies carried out in the water area of the Small Sevan made it possible to draw up geophysical sections characterizing the structural features of the lake’s bottom sediments. In general, the obtained data will be used to determine the age of the limnological deposits of the inshore and bottom parts of the lake, to establish the paleohydrogeological, geoecological, and paleogeographic features of its development in the Holocene in connection with an attempt to reconstruct the paleoclimate of the studied region. According to the bathymetric data, the bottom of the Greater Sevan represents a flat plain with fluctuations of depths on average 40 ÷ 51.5 m. In the south-western part of the territory, north of the village of Getashen, erosion troughs that are associated with the ancient valley of the river of Argichi are traced. The existence of the latter is also confirmed by geophysical data. It is assumed that the morphology of the deep part of the Small Sevan bottom reflects the presence of significant tectonic subsidence here. At the same time, on the south-western and western slopes, in the formation of the present-day relief of the bottom of the lake, the main role was played by outpourings of Holocene-age lavas. In the northeastern coastal part of the Small Sevan, to a depth of 70 ÷ 99 m, closed depressions have been established, the origin of which is explained by local tectonic subsidence. In general, the bottom relief of the Small Sevan differs significantly from the Greater Sevan, both in terms of complexity and origin.

scholarly journals Hydro Chemical Analysis and Suitability Determination for Irrigation for Ground Water near Solid Waste Dump Site at Pune

2020 ◽  
Author(s):  
S. A. Nihalani ◽  
S. N. Behede ◽  
A. R. Meeruty
Keyword(s):  
Water Pollution ◽  
Chemical Analysis ◽  
Ground Water ◽  
Solid Waste ◽  
Water Samples ◽  
Monsoon Season ◽  
Waste Dump ◽  
Dump Site ◽  
Piper Diagram ◽  
Post Monsoon Season

Abstract Over exploitation and pollution of groundwater resources is considered to one of the major pollution problems these days. Even pollution of air, surface water or land may have a significant effect on pollution and contamination of ground water. Industries, human activities, agriculture, etc generate waste in various forms like solid, liquid and gas. If all this waste is not treated properly, it shall result polluting the environment and further affecting the quality of ground water due to its hydraulic connectivity with the hydrological cycle. In addition, leachate resulting from municipal or industrial solid waste dump site as well agricultural run-off also leads to ground water pollution. It has been estimated that around 45 million people globally are affected by water pollution resulting from excess iron, fluoride, arsenic, or sea water intrusion. The current study deals with physico-chemical analysis of ground water samples and suitability determination of water by using water quality index and Piper diagram for solid waste dump site near Pune. Water samples were collected from open wells as well as bore wells for pre-monsoon and post monsoon season and results were evaluated using residual sodium carbonate, sodium hazard, sodium adsorption ratio, and piper diagram. It can be inferred that, Ca-Cl type of water predominates the study area for both pre-monsoon as well as post-monsoon season.

The Medieval Population of Mountainous Ingushetia According to Odontological Data

2019 ◽  
Vol 48 (4) ◽  
pp. 178-196
Author(s):  
Natalya A. Lejbova ◽  
Umalat B. Gadiev
Keyword(s):  
Morphological Traits ◽  
Dental Anthropology ◽  
Deep Roots ◽  
The Caucasus ◽  
New Material ◽  
The Republic ◽  
The Village ◽  
Medieval Population

Although population of the Caucasus has been studied in a rather detailed way, there are peoples whose anthropological portrait is still incomplete. Among them are the Ingush, one of the oldest autochthonous peoples of the Caucasus. This work presents new material on the dental anthropology of medieval Ingush, collected in 2017 during expeditions to the Jairakh and Sunzhen districts of the Republic of Ingushetia. In the Jairakh district, the investigations were carried out in the crypt complexes of the 15th–18th centuries – Targim, Agikal, Tsori, Salgi, and in Sunzhen region - in crypts near the village of Muzgan. The craniological series of medieval Ingush studied according to the dental anthropology program can be described as belonging to the western range of odontological complexes. Unlike most modern Caucasian groups, it does not belong to gracile forms, but rather to a maturized odontological variant, which has deep roots in the Caucasus. The results once again demonstrate a certain conservatism and stability of the dental system, which preserves morphological traits of ancestral groups longer than other anthropological systems.

Current Situation of Water Pollution and Human Health in the Republic of Benin

2018 ◽  
Vol 8 (3) ◽  
Author(s):  
Kpatinde Talagbe Aime ◽  
A. H. Abdul Wahab ◽  
K. S. J. Fadina ◽  
W. K. A. Oting ◽  
D. B. O. Sinatoko
Keyword(s):  
Water Pollution ◽  
Human Health ◽  
Current Situation ◽  
Republic Of Benin ◽  
The Republic

To syntaxonomy and ecology of communities with participation of alien species Hordeum jubatum L. in the South Urals

2020 ◽  
pp. 13-26
Author(s):  
Ya. M. Golovanov ◽  
L. M. Abramova
Keyword(s):  
Poa Pratensis ◽  
Steppe Zone ◽  
Forest Belt ◽  
Mountain Forest ◽  
South Urals ◽  
Forest Steppe ◽  
The South ◽  
Juncus Gerardii ◽  
Hordeum Jubatum ◽  
The Republic

The synthaxonomy and ecology of communities with predominance of Hordeum jubatum L., included in the «black list» of the Republic of Bashkortostan (Abramova, Golovanov, 2016a), the preliminary «black list» of the Orenburg Region (Abramova et al., 2017) and the «Black book of flora of Middle Russia» (Vinogradova et al., 2010), are discussed in the article, which continues a series of publications on the classification of communities with alien species in the South Urals (Abramova, 2011, 2016; Abramova, Golovanov, 2016b). H. jubatum was first found in the South Urals in 1984 as an adventive plant occurring along streets in the town of Beloretsk, as well as in gardens where it was grown as an ornamental plant. During the 1980s, it was met also at some railway stations and in several rural localities. Its active distribution throughout the South Urals started in XXI century (Muldashev et al., 2017). Currently, H. jubatum, most naturalized in the native salted habitats of the steppe zone, is often found in disturbed habitats in all natural zones within the region. The short vegetating period and resistance to drought allowed it to be naturalized also in dry steppes, where it increasingly acts as the main weed on broken pastures. The aim of the work, conducted during 2011–2017, was further finding the centers of H. jubatum invasion in 3 regions adjacent to the South Urals — the Republic of Bashkortostan and the Chelyabinsk and Orenburg Regions (Fig. 1). In the main sites of H. jubatum invasion 71 relevès were performed on 10–100 m² sample plots with the information of location, date, the plot size, the total cover, average and maximum height of herb layer. Classification was carried out following the Braun-Blanquet method (Braun-Blanquet, 1964) with using the Kopecký–Hejný approach (Kopecký, Hejný, 1974). The community ecology was assessed by weighted average values according to the optimal ecological scales by E. Landolt with usfge of the software of IBIS (Zverev, 2007). PCA-ordination method with usage CANOCO 4.5 software package was applied to identify patterns of environmental differentiation of invasive communities. The current wide distribution area of H. jubatum and its naturalization in synanthropic, meadow and saline communities in the South Urals, as well as its occurrence within mountain-forest belt, forest-steppe and steppe zones both in the Cis- and Trans-Urals, indicates species wide ecological amplitude, high adaptive capability and invasive potential. Its vast thickets are known in the steppe zone, both in disturbed steppes around settlements and along the banks of water bodies. The invasion sites are smaller in the northern regions and mountain forest belt, where these are located in settlements or along communication lines. Therefore, the steppe zone is more favorable for invasive populations, and their distribution will continue from the south to the north. Communities with predominance of H. jubatum, described earlier (Abramova, Golovanov, 2016b) in the Cis-Urals as two derivative communities (associations Hordeum jubatum [Scorzonero–Juncetea gerardii], Hordeum jubatum [Artemisietea]) and Polygono avicularis–Hordeetum jubati, were met in other regions of the South Urals. Also a new derivative community Hordeum jubatum–Poa pratensis [Cynosurion cristati], occuring in the northern part of the Cis-Urals and Trans-Urals, was established. In new habitats this species forms three types of communities: ass. Polygono avicularis–Hordeetum jubati (Fig. 2) the most widespread in anthropogenic habitats throughout the South Urals; derivative community Hordeum jubatum–Juncus gerardii [Scorzonero–Juncetalia gerardii] (Fig. 5) which replaces saline meadows mainly in the steppe zone of the region; derivative community Hordeum jubatum–Poa pratensis [Cynosurion cristati] (Fig. 4) which y replaces low-herb meadows in the forest-steppe zone and mountain-forest belt. PCA ordination (Fig. 6) shows that moisture (H) and soil richness-salinization (S) factors are in priority in differentiation of communities with predominance H. jubatum. The first axis is mainly related to the salinization and soil richness. The community pattern along the second axis is associated with wetting factor. The cenoses of the derivative community Hordeum jubatum–Poa pratensis [Cynosurion cristati] (less salted substrates in drier conditions in the northern part of the forest-steppe zone and the mountain forest belt) are grouped in the upper part of the ordination diagram, while communities of ass. Polygono avicularis–Hordeetum jubati (drier conditions in settlements, the steppe zone) in its low left part. Thus, axis 1 also reflects the intensity of trampling. Another group is formed by cenoses of the derivate community Hordeum jubatum–Juncus gerardii [Scorzonero–Juncetalia gerardii], (salt substrates with a high level of moisturization, on not very damaged water body banks). All communities with H. jubatum are well differentiated in the space of the main ordination axes that indirectly confirms the correctness of our syntaxonomic decision. Undoubted is further expansion of H. jubatum with its entering both anthropogenic and natural plant communities within the South Urals that suggests a constant monitoring in centers of species invasion.

Safeguarding the Republic? The South African Police Service, Legitimacy and the Tribulations of Policing a Violent Democracy

2021 ◽  
Vol 56 (1) ◽  
pp. 92-108
Author(s):  
Guy Lamb
Keyword(s):  
South Africa ◽  
South African ◽  
Public Trust ◽  
The South ◽  
Police Service ◽  
South African Police Service ◽  
The Republic ◽  
South African Police ◽  
High Crime ◽  
Excessive Use Of Force

Since 1994 the South African Police Service (SAPS) has undertaken various efforts to build legitimacy in South Africa. Extensive community policing resources have been made available, and a hybrid community-oriented programme (sector policing) has been pursued. Nevertheless, public opinion data has shown that there are low levels of public trust in the police. Using Goldsmith’s framework of trust-diminishing police behaviours, this article suggests that indifference, a lack of professionalism, incompetence and corruption on the part of the police, particularly in high-crime areas, have eroded public trust in the SAPS. Furthermore, in an effort to maintain order, reduce crime and assert the authority of the state, the police have adopted militaristic strategies and practices, which have contributed to numerous cases of excessive use of force, which has consequently weakened police legitimacy in South Africa

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