scholarly journals Spatial Assessment of Seasonal Changes in Pollution of the Air Ground Layer with Aerosol Particles in School Yards of Tiaret city (Algeria)

2019 ◽  
Vol 28 (1) ◽  
pp. 140-147
Author(s):  
Khadidja Naceur ◽  
Mhamed Maatoug ◽  
Lazreg Benaichata ◽  
S. А. Stankevich ◽  
O. V. Titarenko ◽  
...  

According to the data obtained in the autumn-winter period, the excess of PM2.5 in air during the schoolday after a short stay by pupils in the school yards was 1.5 –2 times. The PM2.5 concentration in the autumn - winter period was up to 1.5 times higher than that of the spring – summer time. High concentrations of dust particles are observed in areas close to heavy traffic in winter in the South-Eastern part of the city. Low concentrations were recorded in the autumn-winter time in areas adjacent to forests in the North –Western part of the city of Tiaret. However, the protective function of forest stands in the spring – summer period in the North-Western part of the city of Tiaret is less evident. The need for introduction of several nature protection measures in the city is obvious. Among them: fuel quality control and fines for the use of low-grade fuel, increasing the density of trees and shrubs in the city in the areas uncovered by vegetation.

1973 ◽  
Vol 4 ◽  
pp. 11-18 ◽  
Author(s):  
J. A. Lloyd

A full account of the Society's involvement with the emergency excavations at Sidi Khrebish, Benghazi, is contained in the Annual Reports for 1970–1 and 1971–2. In November 1972, at the invitation of the Libyan Department of Antiquities, the Society sent out a fresh team of archaeologists to begin the new season's excavations. Work has since continued uninterrupted until the time of writing (1 July 1973) and is due to finish at the end of September.The preservation of the site from redevelopment for another year owes a great deal to the keen and active interest of the late Director-General of Antiquities, Mr Awad Sadawya, and the success of the expedition is greatly indebted to his efforts. We owe our thanks also to the officials of the Department of Antiquities whose sustained good will and co-operation has helped us greatly over this long period. In particular Mr Mohammed Nemri, Acting Director-General of Antiquities, Mr Abdulhamid Abdussaid, Controller of Antiquities for the Benghazi area, and Mr Ali Salem Letrik, Deputy Controller of Antiquities for Benghazi have taken full part in what has always been a team operation.The disused Turkish cemetery of Sidi Khrebish lies close to the sea, a short distance to the north of the bustling commercial heart of modern Benghazi (see Fig. 1). It covers part of the north-western outskirts of the city of Berenice, founded in 247 B.C., the Hellenistic and Roman successor to the Hellenic city of Euesperides. The major part of the city lies to the south and to the east of the cemetery, under the mixture of Turkish, Italian and more recent buildings which form the modern town.


Public Health ◽  
2022 ◽  
Vol 1 (4) ◽  
pp. 34-48
Author(s):  
D. O. Ivanov ◽  
V. K. Yuryev ◽  
Yu. V. Petrenko ◽  
K. E. Moiseeva ◽  
I. I. Mogileva ◽  
...  

In order to assess the mortality and lethality rates of newborns in obstetric organizations of the North-Western Federal District in 2013–2019, a comparative analysis of official statistics data was carried out. It was found that in the North-Western Federal District in the period from 2013 to 2019, there was an almost annual decrease in newborn mortality rates. The overall decrease in mortality in maternity care organizations of the Federal District (from 2,5% to 1,9%) was mainly due to a decrease in mortality in obstetric hospitals of the first and second levels (respectively from 3,2% to 1,2% and from 1,7% to 0,7%), while most children died in perinatal centers, where the mortality rate has not changed in recent years (2013 – 4,1%; 2019 – 4,0%). The study showed a decrease in mortality rates in the subjects of the Russian Federation that are part of the federal district, except for the city of St. Petersburg. The average hospital lethality rate of newborns in maternity care organizations of the North-Western Federal District during 2013–2019 was in the range of 1,9%–2,0%, did not change significantly and corresponded to the national average. However, the level of hospital lethality significantly differed in individual subjects of the district – in more than half of them, the level of hospital lethality exceeded the average, while in others it was significantly lower. Thus, the decrease in the mortality and lethality rates of newborns in maternity care organizations indicates an increase in the quality of medical care for children in the North-Western Federal District. dicates an increase in the quality of medical care for children in the North-Western Federal District. 


2007 ◽  
Vol 52 (1) ◽  
pp. 105-109 ◽  
Author(s):  
David Feldman

In May 1928 The Watling Resident, a local newspaper directed at a readership among the inhabitants of a working-class estate created by the London County Council on the north-western outskirts of the city, published its first issue. It took the opportunity to represent what it saw as its readers' urgent and existential difficulties: “We have been torn up by the roots and rudely transplanted to foreign soil.” According to the newspaper, these painful feelings of displacement were voiced “over and over again” by people living on the new estate. These migrants and their mouthpiece spoke and wrote in terms that prefigure the pioneering historical work of Oscar Handlin or suggest they were of one mind with the Chicago School of sociology. In this light it is remarkable that these migrants were not recent arrivals from Poland, or even from Ireland or Scotland; rather they had moved to the estate from inner London, and more than half had previously lived a few miles away in the north London boroughs of St Pancras, Islington, Finsbury, and Paddington.


Author(s):  
I.V. Sheverdyaev ◽  
◽  
А.V. Kleschenkov ◽  
S.А. Misirov ◽  

The rivers of the Northwestern Caucasus between Anapa and Tuapse are characterized by a flood runoff regime. Floods leading to material damage occur on the rivers of the region every year. After the 2012 flood, a network of automatic level gauges is developing in the region, recording water levels every 10 minutes. During the expeditions of the SSC RAS in the winter period 2019-2020 the analysis of the installation sites of 69 level gauges was carried out. The features of level gauges influencing the collection of observations are identified: the installation options, floodplain vegetation, the features of the channel, floodplain and river valley. The analysis of the accumulated for 2014–2020 database of level observations on rivers with catchment areas from 1.4 km2 to 1245 km2 was carried out. 34 778 periods of growth, 70 135 periods of stagnation, 39 485 periods of decline and 42 032 gaps were identified. Of these, 3398 flood situations were considered. More than 100 flood events were recorded on 11 level gauges: on the rivers Abin, Shebsh, Psekups, Pshish (3 gauges), Nechepsukho, Dzhubga, Vulan, Pshada and Mezyb. Less than 10 flood situations were recorded on 14 level gauges. To increase the efficiency of the network of automatic level gauges, it is necessary to expand it to the watersheds between rivers Abin and Khable, as well as on Pshish on the northern macroslope and on the watersheds of Pshada, Nechepsukho and Tuapse on the southern macroslope.


2010 ◽  
Vol 33 (1) ◽  
pp. 177
Author(s):  
Akihisa Motoki ◽  
Yuji Orihashi ◽  
Jose A. Naranjo ◽  
Daiji Hirata ◽  
Pedro Skvarca ◽  
...  

Lautaro is the volcano closest to the Chile Triple Junction in the Andean Austral Volcanic Zone. The volcanic edifice of 3,607 m a.s.l. stands out on the north-western part of the plateau of the South Patagonian Ice Field. The volcano basement is composed of low-grade meta-pelites that are cut by tabular intrusive bodies of hornblende-biotite granite. The volcano is almost completely covered by ice and the study was performed on volcanic detritus present in terminal moraines of the Lautaro Glacier and the tephra on the surface of the O'Higgins Glacier. The terminal moraines of Lautaro Glacier contain fragments of light grey dacite rich in plagioclase and hornblende phenocrysts. Some dacite blocks show prismatic jointing, suggesting an origin of hot emplacement and subsequent rapid cooling, possibly resulted from collapse of a steep lava front. Some samples have glassy groundmass and rhyolite-like flow texture, with presence of mafic inclusions and bread crust bomb texture. The surface of the O'Higgins Glacier is covered by lapilli-size pumice fallout deposit. There are many dirt cones covered by volcanic ash composed of pumice fragments, volcanic glass, quartz, plagioclase, biotite, hornblende, and orthopyroxene. The ash and pumice are similar in chemical composition, both indicating an adakitic signature. At least three layers of fallout deposits have been recognised in parts of the surface of the glacier, which may correspond to the latest known eruptions.


2021 ◽  
Vol 12 (10) ◽  
pp. 677-693
Author(s):  
Lumami Kapepula Vercus ◽  
Théophile Ndikumana ◽  
Njoyim Estella Buleng Tamungang ◽  
Musibono Dieu-Donné ◽  
Lukusa Mbaya Alain ◽  
...  

2018 ◽  
Vol 7 (4) ◽  
pp. 138-144
Author(s):  
Rezeda Firgatovna Khasanova ◽  
Irina Nikolaevna Semenova ◽  
Yuliya Samigullovna Rafikova ◽  
Yalil Tukhvatovich Suyundukov ◽  
Irina Valerievna Ilyina

The research studies the content of heavy metals (HM) in soils of residential zones of Sibay - the mining industry center of the South-East of the Republic of Bashkortostan. It is shown that in soils under herbaceous vegetation there is an increased content of a number of HMS, such as copper, zinc and cadmium. At the same time the areas located under the crown of Betula pendula Roth. are less contaminated with HM compared to open areas. Reduced content of a number of metals (iron, cadmium, cobalt and mobile forms of Nickel) in soils under the crown of the Roth confirms the barrier role of woody plants that protect the soil from airborne toxicants. The study showed the prospects of using a birch as a type of accumulator-phytoremediant in the greening of the mining region urban areas of the Republic of Bashkortostan. Studies of TM content in organs and tissues have shown that representatives of the species growing in Sibay can accumulate a significant amount of phytotoxicants, especially zinc, the content of which ranged 1041-1855 mg/kg. One of the sources of the increased TM content in the leaves and the bark of trees is dust. The paper presents a comparative study of the dustiness of birch leaves growing in the Central part of the city with heavy traffic and in the vicinity of the Sibay quarry, developing a Deposit of copper-zinc ore. The amount of dust on the leaves collected near the dumps of the Sibay quarry was 3,53 0,64 g/m, which is less than in the Central part of the city, where this figure reached 41,04 10,38 g/m. Obviously, this is due to the fact that the dumps of the Sibay quarry are located in an open and intensively ventilated area, which explains the strong dispersion of dust. At the same time dust particles near the quarry dumps are much more contaminated with manganese, cobalt and cadmium than in the Central part of the city.


1957 ◽  
Vol 52 ◽  
pp. 152-189
Author(s):  
J. E. Jones ◽  
L. H. Sackett ◽  
C. W. J. Eliot

The wall surveyed in this article is a continuous defensive fieldwork in north-western Attica, situated some six miles from Athens; it closes a prominent gap in the mountain-ring around the city, linking the ranges of Aigaleos to the south and Parnes to the north (Fig. 1). The local name for this wall, Τὸ Δέμα ‘The Link’, is both apt and specific and is being used in this article; in the past the wall has sometimes been referred to as the Aigaleos–Parnes wall and sometimes also as the Ano-Liosia wall from its relation to the nearest modern village.The lack of a detailed survey of the Dema, combined with a complete absence of literary references in ancient authors, has compelled earlier writers to base their theories largely on grounds of historical probability. The divergences in their conclusions are not surprising, and clearly demonstrate the need for detailed information about the remains. We have accordingly made a field survey of the Dema and offer a full description of the wall in the belief that this will lead to a truer interpretation of its function and also its date.


2018 ◽  
Vol 21 ◽  
pp. 89-117
Author(s):  
Inga Głuszek

The article discusses fragments of the Athenian red-figure pottery discovered during excavations in Nikonion, an ancient Greek colony founded on the northern coast of the Black Sea, at the end of the 6th century BC. The collection of Athenian pottery finds at this site is very diverse in terms of technique, style and phase of production. In a short introduction to the article the state of research on the finds of Athenian red–figure pottery from the site is presented, but the main focus is on the findings of the Ukrainian-Polish team of archaeologists who conducted joint excavations at the site in the years 2007–2012. The described fragments of vessels, except for one item, come from the same archaeological context – a residential building discovered in the north-western part of the site dating back to the end of the 5th century – the first half of the 4th century BC. One vessel fragment comes from an earlier phase of the city development dated preliminarily to the second half of the 5th century BC.


2003 ◽  
Vol 19 (1) ◽  
Author(s):  
Ole Worm

Danske OL-deltageres møde med de olympiske lege. Bl.a. svømmeren Jytte Hansen i 1948.PALÆSTRA in O-D-I-N’s training facilityThe shrines at Olympia, Delphi, Isthmia and Nemea took their turn in fixed rotation to organize festivals in which sporting competitions were a central element. They were characterised by being ”stefanoforos”, which is to say that the victor would be wreathed and not directly rewarded with gifts. Preparatory training in situ was a requirement. This took place at a training facility separate from the shrine and from the competition ground. Palæstra was part of this facility. Facilities of this kind of differing sizes have been dated and identified at Olympia and Delphi, and excavations are in progress to find similar sites at the other two shrines in the north-western Peloponnese. American archaeologists on location have found traces which are reported to be promising. This arena for wrestling and fighting with its square building was the site of both physical and intellectual training and from the beginning developed in Hellenic architectural activity in ways that correspond to other secular buildings. Where palæstra in the city state was part of the everyday life of men and boys, this training facility in OD- I-N became the site of an unadulterated presentation of an example of the good life.


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