Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "channel regulation" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Numerical modeling of hydrodynamic and sediment siltation due to typhoon in estuary channel regulation
Autorzy:
Zhao, H.
Zhang, Q.
Xie, M.
Powiązania:
https://bibliotekanauki.pl/articles/259087.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
Oujiang Estuary
numerical model
channel regulation
sediment siltation
typhoon
Opis:
Oujiang Estuary is a complex tidal estuary with many channels and shoals in the East China Sea, which was affected by typhoon frequently. The navigation channel of Wenzhou Port is located in the north branch of Oujiang Estuary, which happened serious sediment siltation in many times due to typhoon impact. The regulation is considered to decrease siltaion of the channel and protect shoals as well. According to the site survey data, the mathematic model is established and validated, which simulates the hydrodynamic, sediment transport and channel siltation due to typhoon in Oujiang Estuary. The channel regulation scenario is studied by the model simulation after analysis of the silation character. It indicates that the high concentration sediment from shoals north of channel is main sediment source caused siltation in the channel, which can be prevented into the channel by the regulation scenario and decrease siltation efficiently.
Źródło:
Polish Maritime Research; 2015, S 1; 61-66
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fauna bezkręgowa w strumieniach i rzekach miasta Łodzi
Macroinvertebrates in streams and rivers in the City of Łódź
Autorzy:
Tszydel, Mariusz
Kruk, Andrzej
Galicka, Wanda
Tybulczyk, Szymon
Pietraszewski, Dariusz
Marszał, Lidia
Janic, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/970749.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
aquatic invertebrates
urban streams
channel regulation
pollution
bezkręgowce wodne
cieki miejskie
regulacja koryta
zanieczyszczenie
Opis:
In the City of Łódź there are 29 streams and rivers of various sizes, 18 of them named and 11 unnamed, whose total length is 125 km. The aim of the present study was gaining initial knowledge of the abundance and diversity of aquatic macroinvertebrates in water courses in the City of Łódź. Collected aquatic macroinvertebrates were represented by 18 taxons. The highest occurrence was recorded for Dipterans (Chironomidae) (present in all samples), Oligochaeta, Ephemeroptera and Gastropoda. The distribution of macroinvertebrates along the investigated streams varied very much. The Jasień and Łódka Streams turned out least abundant and taxonomically diverse in macroinvertebrates. The opposite were the Bzura and Łagiewniczanka Streams. It confirmed that usually the differences in macroinvertebrate distribution and diversity resulted from pollution of the running waters with domestic and industrial sewage, transforming of certain water courses into sewage-storm canals, regulation including covering of river beds and banks with concrete.
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2006, Supplementum; 43-54
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ regulacji koryta na warunki sedymentacji osadów na równinie zalewowej dolnego Dunajca
Impact of channel regulation on sedimentation on the Lower Dunajec floodplains
Autorzy:
Liro, M.
Powiązania:
https://bibliotekanauki.pl/articles/2074954.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
regulacja koryta
depozycja osadów
opuszczone koryto
falochrony
Dunajec
diagram C/M
channel regulation
overbank deposits
abandoned channel
groynes
Dunajec river
C/M diagram
Opis:
In the last century the Dunajec channel in its lower river course was considerably transformed due to channelization works. The former multi-thread river channel was replaced by a single one, resulting in abandonment of side channels. Groynes were constructed on both main and side channel. Quick filling up of the inter-groyne basins reduced channel width and capacity. In the study area, a side channel with groynes was abandoned and filled up. The aim of this study was to reconstruct the rate and depositional conditions of the sediments infilling the abandoned channel. These sediments are 215-222 cm thick and were deposited at an average rate of 5-5.2 cm/year. Their sedimentary environment was inferred based on a C/M diagram. The depositional conditions in the abandoned channel were determined by two major factors: distance to the active channel and difference in elevation between depositional surface and active channel. Close to the active channel, 61% of sediment was deposited from suspension and 39% by traction current. At a distance of 200 m to the active channel, 100% of sediment was deposited from suspension, with 25% falling from pelagic suspension. At an early stage of infilling of abandoned channel, the depositional flows are more energetic and the deposition rate is higher than in the later stage. The investigated sediments are an example of accumulation induced by channelization works. The spatial distribution of these fine-grained, quickly deposited sediments is determined by the course of the abandoned channel.
Źródło:
Przegląd Geologiczny; 2012, 60, 7; 380--386
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Riverbed erosion estimation in the selected cross-sections of the upper Vistula River
Autorzy:
Lapuszek, M.
Powiązania:
https://bibliotekanauki.pl/articles/60197.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
riverbed erosion
river regulation
Vistula River
river channel
technical regulation
erosion process
Opis:
The analysis of time variability of riverbed elevation recorded at eight cross-sections of the Upper Vistula River is presented in the paper. The variability is analyzed on the base on the observed low annual water stages and the cross-sectional geometry variation observed over decades. Furthermore, the analysis of riverbed changes in the years 2001 – 2011 was done in 16 cross-sections located between the Koło and Zawichost gauging stations. Based on the analyzed changes in the riverbed elevation of the eight tested gauging stations it should be noted that since the beginning of the observation period, that is from about the beginning of the 20th century to the mid 1960’s, in the Upper Vistula River riverbed erosion can be observed with a slight tendency for accumulation. As a result of technical regulations of the river channel of the Vistula River from km 247 +000 to 295 +000 carried out in the years 1975 to 1982, intensive processes of riverbed erosion has occured. In most of the 16 profiles it was found that in the years 2001-2011 the river channel was deepened. The occurrence of local riverbed deepening at the river banks was also observed.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2013, 2/IV
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regulation of gastric mucosal calcium channel activity by an antiulcer agent, ebrotidine
Autorzy:
Slomiany, B L
Liu, J.
Piotrowski, J.
Czajkowski, A.
Yotsumoto, F.
Slomiany, A.
Powiązania:
https://bibliotekanauki.pl/articles/70407.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
calcium channel
regulation
gastric mucosa
antiulcer agent
ebrotidine
Źródło:
Journal of Physiology and Pharmacology; 1994, 45, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Managing through contracts (a case study municipality of Elbasan, Albania)
Zarządzanie przez kontrakty – studium działalności zarządczej miasta Elbasan w Albanii
Autorzy:
Turhani, A.
Powiązania:
https://bibliotekanauki.pl/articles/79197.pdf
Data publikacji:
2013
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
management
contract
public sector
law
regulation
institutional economics
policy
human factor
environmental factor
communication channel
long-term relationship
Elbasan city
Albania
Źródło:
Folia Pomeranae Universitatis Technologiae Stetinensis. Oeconomica; 2013, 73
2081-0644
Pojawia się w:
Folia Pomeranae Universitatis Technologiae Stetinensis. Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies