Wyniki wyszukiwania - AGRO

1

Urban flash flood in Gdansk - 2001. Case study

100%

Majewski W.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2016

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tom 04

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nr 2

Gdańsk is an important Polish city and harbour situated on the southern coast of the Baltic Sea in the Gulf of Gdańsk, in the lowland delta at the mouth of the Vistula River. At present Gdańsk has 460 thousand inhabitants and covers an area of 262 km2. The population and the area of the city have not changed over recent decades. In previous centuries the city was affected by severe floods, which caused considerable economic damage and the death of inhabitants. Most of these floods were caused by ice jams. The complicated system of rivers and channels within the city and in its close surroundings is called the Gdańsk Water Node (GWN ). The possible directions of flood hazard are: from the sea (Martwa Vistula), and from the main Vistula channel in the case of a breached left embankment. Flood hazard from the catchment of the RC h was not considered by city authorities. In July 2001, a devastating flash flood unexpectedly hit the city of Gdańsk. The paper presents this flood as a case study, without reference to other floods of similar character. It describes the city of Gdańsk, which is an important economic, cultural, scientific, political and industrial center, the system of rivers and channels within Gdańsk which form Gdańsk Water Node (GWN ), the precipitation regime, the course of the flood, and its effects. A special project was formulated after the flood with the aim of developing the proposal of new hydraulic engineering solutions in the GWN and in the catchment of Radunia Channel to prevent similar floods in the city in cases of rainfall similar to that of 2001. The paper also presents the implementation of the proposed engineering solutions.

2

Mercury in surface sediments associated with shipyard activity in the city of Gdansk

88%

Falandysz J.

Polish Journal of Environmental Studies

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1999

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tom 08

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nr 4

The aim of the present work was to elucidate if a long tradition of the shipyard activity has an influence on a status of mercury contamination of the surface sediments and port watercourse of the city of Gdansk. Concentrations of total mercury (Hg) were determined in surface (0-10 cm) sediments collected from the area of the shipyard canals in the city of Gdansk in 1996. Only a relatively small variations in spatial distribution of mercury in surface sediments examined were found, and the range of concentrations was from 300 to 1300 ng/g dry weight. Despite of relatively high mercury concentrations determined in surface sediments examined the overall range of the values was of the same order of magnitude as indicated earlier in samples collected from the Old Motlawa River and the Dead Vistula River Channel (Martwa Wisla) from the administrative area of the city of Gdansk in 1993-1995. The results did indicate that the shipyard activity doesn't has any impact on mercury load of the sediment in surrounding canals. The source of pollution with mercury in the canals investigated can be a storm water washing out various surfaces both from the urbanised area and including the shipyards of the city of Gdansk.

3

IV Miedzynarodowa Wystawa Wynalazkow Innowacje 2001 [Gdansk, 17-19 pazdziernika 2001 r.]

75%

Pawlak W. R.

Problemy Jakości

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2001

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tom 33

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nr 12

46-47

4

Sulphate-reducing bacteria, their properties and methods of elimination from groundwater

75%

Wargin A., Olanczuk-Neyman K., Skucha M.

Polish Journal of Environmental Studies

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2007

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tom 16

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nr 4

639-644

In the Gdańsk region urban development and intensive take off have caused an increase in water exploitation. As a consequence of the changes of hydrogeological conditions, a deterioration of chemical and bacteriological quality of water has been observed. Routine bacteriological quality control does not include some specific bacteria which are characteristic for the groundwater environment and can have negative influence on the physical and chemical properties of water. Among such bacteria there are sulphate-reducing bacteria (SRB). In the paper frequency of SRB occurrence in raw water from Cretaceous and Quaternary formations and in treated water has been described. It has been proved that bacterial consortium isolated from groundwater show preference to sodium lactate as a main source of carbon and energy. SRB have a negative influence on organoleptic properties of water quality and the technical condition of distribution net, the water should be disinfected. It has been proved that non-reagent methods, like UV radiation and microfiltration, are effective for SRB elimination from groundwater.

5

Probable rainfall in Gdansk in view of climate change

75%

Szpakowski W., Szydlowski M.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 3

One of the manifestations of climate changes is the occurrence of a greater number of precipitation events, characterized by greater rain intensity that affects the economic stability of cities. Gdańsk is an example of a city in which such events have occurred since the beginning of the twenty-first century. Due to the altitude differences in the area of Gdańsk city (between –2 m and 180 m a.s.l.), the occurrence of extreme atmospheric precipitation almost immediately causes hydrological effects in the water network consisting of several streams of montane character, which flow eastwards from the plateau of the Kashubian Lakeland. Meteorological stations of the National Meteorological Service (IMGW-PIB) are located in the coastal zone (Port Północny/Northern Port, Świbno) and in the highest part of the city (the Rębiechowo airport). Because this is insufficient, the city of Gdańsk has been expanding the local rain monitoring network since 2001, currently having reliable 10-year observation data sequences. The said network is operated by the Gdańsk Water municipal company. Climate changes resulting in different characteristics of rainfall episodes in Gdańsk naturally influence the determination of the probability of their occurrence. According to the rainfall model developed by Bogdanowicz and Stachy at the turn of the 20th and 21st centuries, at least 4 rainfall events lasting for over 8 hours in the last 17 years should be classified as a 100-year rain event. One of these extended the parameters of a 300-year rain event; whereas we asses the rain in the year 2016, when even 170 mm of rainfall was recorded on July 14, as at least a 500-year rain event. During this period, several-minute events were also recorded, which also exceeded the parameters of a 100-year rain event. The paper presents precipitation models for the region of Gdańsk. Based on the maximum annual daily rainfall from Rębiechowo meteorological station from the years 1974–2017, an analysis of changes in precipitation values corresponding to certain probabilities of occurrence was conducted. An assessment was also made of the projected decrease in the value of precipitation in relation to hydro-technical constructions, road-engineering structures, and rainwater drainage systems in view of changing legal regulations, as well as the latest trends related to the management of rainwater.

6

Sea relation between a sea depth detected by acoustical methods and a nautical depth

75%

Gajewski L., Morgas W., Relisko J., Tegowski J.

Oceanological Studies

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2000

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tom 29

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nr 3

7

Fluoride and cadmium content in urine of children in Gdansk

75%

Czarnowski W., Hac E., Krechniak J.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 3

The aim of this study was (a) to determine the concentration of fluoride and cadmium in urine of 1240 children ( 635 boys, 605 girls) from Gdańsk, aged 7-14; and (b) to examine whether a correlation exists between age and sex of children, the location of the schools, and the urinary levels of fluoride and cadmium. Fluoride was determined potentiometrically using a fluoride-specific electrode. Cadmium was determined by atomic absorption spectrometry. The mean fluoride concentration in urine in children attending two schools located close to a phosphate fertilizer waste disposal site was 2.14 ± 1.16 mg F¯/L, in three others 1.05 ± 0.49 mg F¯/L. The mean cadmium concentration in urine was 0.17 ± 0.19 μg Cd/L. In children aged 7 the cadmium concentration was significantly lower than in older ones.

8

Influence of the Gdansk - East wastewater treatment plant on the coastal zone of the Gulf of Gdansk - hydrodynamic aspects

75%

Robakiewicz M.

Oceanological Studies

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2000

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tom 29

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nr 4

9

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Prevalence of overweight and underweight in children and adolescents in districts of Gdansk

63%

Resiak M., Walentukiewicz A., Lysak A., Drabik J., Niedzielska A., Jankowski M., Skonieczny P.

Journal of Pre-Clinical and Clinical Research

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2014

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tom 08

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nr 1

10

Plumage polymorphism and breeding parameters of various Feral Pigeon [Columbia livia Gm.] morphs in urban area [Gdansk, North Poland]

63%

Hetmanski T., Jarosiewicz A.

Polish Journal of Ecology

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2008

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tom 56

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nr 4

683-691

In 2007, the population of Feral Pigeons in Gdańsk City (almost 500,000 inhabitants) constituted 14 200 individuals. The population density in the built-up areas of Gdańsk (82.2 km²) was estimated at an average of 17.2 birds 10⁻¹ ha, however the highest density occurred in Gdańsk’s city centre area (5.7 km²) – 44 birds 10⁻¹ ha. Blue plumage type pigeons dominated in the population (93%), while black, red and albinotic types were rarely observed. Melanistic birds were more frequently found than blue-bar birds, whose plumage is inherited from the Rock Pigeon. However, blue-bars were more numerous in Gdańsk compared with other pigeon populations in central and northern Europe. Old pre-war buildings were not confirmed as influencing the plumage pattern of pigeons. Melanistic birds were more numerous in old district of Oliwa, whereas blue bars in old Gdańsk city centre. The plumage of pigeons in small flocks of up to 50 birds did not differ from that of pigeons in flocks of over 50 and 100 birds. Blue-bars, checkers and dark checkers did not differ in body mass or breeding parameters. Other causes of polymorphism variation among pigeons in a population are discussed.

11

Submerged objects - a nice place to live and develop. Succession of fouling communities in the Gulf of Gdansk, Southern Baltic

63%

Dziubinska A., Janas U.

Oceanological and Hydrobiological Studies

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2007

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tom 36

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nr 4

65-78

12

Jak zyc z powodziami

63%

Majewski W.

Academia. Magazyn Polskiej Akademii Nauk

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2005

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nr 1

30-31

13

Seafood technology in Poland - teaching and research

63%

Sikorski Z. E., Kolakowski E.

Magazyn Przemysłu Rybnego

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1998

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nr Spec.iss.

14

Microbiological and biological aspects of the Wastewater Treatment Plant Wschod in Gdansk

63%

Olanczuk-Neyman K., Geneja M., Quant B., Dembinska M., Kruczalak K., Kulbat E., Kulik-Kuziemska I., Mikolajski S., Gielert M.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 6

This study indicates that in the wastewater treatment plant "Wschód" in Gdańsk, working in the modified UCT system, the effectiveness of bacteria pollutant removal varies from 92 to 99% and almost 100% of parasites are removed. Despite this, the number of indicator bacteria and periodical presence of Salmonella in the effluent indicates that it is strongly bacteriologically polluted. It was discovered that the number of indicator bacteria in primary sludge was by 1 to 3 orders of magnitude higher than in the excess activated sludge. Also, Salmonella was twice more frequently detected in the primary sludge than in excess activated sludge (70% and 30%, respectively). In contrast, the average number of invading helminths' ova (ATT) was over two times higher in excess activated sludge than in primary sludge. An efficient method for controlling activated sludge bulking resulting from intensive growth of Microthrixparvicella was dosing of PAX-16 (the doses from 2.5 to 4.8 g Al3+/kg d.m.-d).

15

Analysis and long-term forecast of sea levels along the Polish Baltic Sea coast. Part II. Annual mean sea levels - forecast to the year 2100

63%

Wroblewski A.

Oceanologia

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1994

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tom 36

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nr 2

16

Centre of Excellence in Environmental Analysis and Monitoring at the Chemical Faculty of the Gdansk University of Technology

63%

Szpinek P., Chrzanowski W., Namiesnik J.

Polish Journal of Environmental Studies

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2004

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tom 13

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nr 2

17

Examining the effect of the type of roofing on pollutant content in roof runoff waters from buildings in selected districts of the city of Gdansk

63%

Polkowska Z.

Polish Journal of Environmental Studies

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2004

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tom 13

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nr 2

This paper presents results of research regarding concentration levels of selected pollutants in samples of roof runoff waters from buildings. The concentrations of the following analytes were marked: organonitrogen, organophosphorus and organochlorine pesticides, the cations: Na+, K+, NH4+, Mg2+, Ca2 and the anions: F-, Br-, Cl-, NO2-, NO3-, PO43-, SO42-, furthermore, measurements of conductance and pH value were performed. Samples were collected in several districts of the city of Gdańsk (Karczemki, Osowa, Przymorze) with old and modern-type buildings with various types of roofing. Catchings were taken over a period of 6 months, always during rainfall. The results obtained allowed us to assess the presence and concentration of the given analytes contained in roof runoff waters from buildings, and so, their contribution to the general pollution of runoff waters. A correlation between the type of roofing and the level of concentration of particular analyte groups was noted, which shows that the materials that roofs are made from (as surfaces and as materials) can be an additional factor influencing the pollution of waters running off them.

18

Structure and reproduction of water frog populations, predominantly RLL triploids, from Wysoka Kamienska, Poland

63%

Rybacki M.

Zoologica Poloniae

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1994

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tom 39

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nr 3-4

19

Heavy metals removal in the mechanical-biological wastewater treatment plant Wschod in Gdansk

63%

Kulbat E., Olanczuk-Neyman K., Quant B., Geneja M., Haustein E.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 5

Heavy metals removal from municipal wastewater has been studied. This paper presents results of investigations carried out in 2000-2001. The investigations concerned analysis of wastewater and sewage sludge from the wastewater treatment plant "Wschód" in Gdańsk, where the modified system UCT (MUCT) is used. It was indicated that the concentrations of seven heavy metals (Zn, Cu, Pb, Cd, Cr, Ni, Ag) in wastewater were rather low. After treatment, the metals concentration met criteria given in the Regulation of the Minister of Environmental Protection of Aug.1, 2002, that was valid at the time of the investigations. Analysis of effectiveness of metals removal during wastewater treatment processes undoubtedly indicates the fundamental role of biological treatment stage in metals removal. Analysis of heavy metals concentrations in primary and biological sludge have proved that the sludge from the WWTP "Wschód" can be utilized in land-farming and land reclamation (according to the Regulation of the Minister of Environmental Protection of Aug.1, 2002).

20

Pestycydy chloroorganiczne i polichlorowane bifenyle w powietrzu atmosferycznym w Gdansku

51%

Falandysz J., Brudnowska B., Iwata H., Tanabe S.

Roczniki Państwowego Zakładu Higieny

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1999

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tom 50

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nr 1

39-47

Zbadano skład i zmiany sezonowe stężenia pestycydów chloroorganicznych (DDTs, HCHs, CHLs i HCB) oraz chlorobifenyli (PCBs) w powietrzu atmosferycznym w Gdańsku. Próbki powietrza pobierano comiesięcznie w okresie od września 1991 do lipca 1992. Stałym składnikiem powietrza atmosferycznego w Gdańsku były: HCB, α-HCH, y-HCH, p,p'-DDT, o,p'-DDT, p,p'-DDE, o,p DDE, p,p'-DDD, o,p'-DDD i PCBs. Składników chlordanu (CHLs) nie wykryto w stężeniach powyżej granicy oznaczalności metody.

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