Search results for: STORM WATER CONDUIT

Zaprojektowano nową obudowę próbnika typu Chemcatcher, tzw. próbnik typu Chemcatcher drugiej generacji. Większość badań kalibracyjnych przeprowadzono stosując próbnik typu Chemcatcher pierwszej generacji. Dlatego zbadano wpływ obudowy próbnika typu Chemcatcher na jego działanie.

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Effect of crystalline emulsifier composition on structural transformations of water-in-oil emulsions: Emulsification and quiescent conditions

Publication

- COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS - Year 2009

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Seasonal changes in organotin compounds in water and sediment samples from the semi-closed Port of Gdynia

Publication

B. Radke
A. Wasik
L. L. Jewell
S. Piketh
U. Pęczek
J. Namieśnik

- SCIENCE OF THE TOTAL ENVIRONMENT - Year 2012

The effect of seasonal changes on the distribution of organotin compounds (OTC) in the sediments and seawaterfrom the docks of the Port of Gdynia was investigated. Sediment and seawater samples were collectedfrom four industrial docks in February (winter) and June (summer) in 2009. The samples were analyzed forbutyltin, phenyltin, octyltin, and tricyclohexyltin (total of 9 OTC derivatives). The fine fraction (b0.063 mm)accumulated...

Assessment of possible application of water lubricated sintered brass slide bearing for marine propeller shaft

Publication

- Polish Maritime Research - Year 2012

W artykule przedstawiono wyniki badań eksperymentalnych smarowanego wodą łożyska poprzecznego z panwią wykonaną ze spieku brązu.Przedstawiono wyniki pomiarów rozkładu ciśnienia w filmie smarnym, trajektorie osi wału oraz oporów ruchu.Przeprowadzono ocenę przydatności tego typu łożyska do łożyskowania okrętowych wałów śrubowych.

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Shaft Misalignment Influence on Water Lubricated Turbine Sliding Bearings with Various Bush Modules of Elasticity

Publication

- Key Engineering Materials - Year 2012

W artykule przeanalizowano wpływ wielkości przenoszenia osi wału względem panwi na nośność łożyska. Analizie poddano łożyska z odmiennymi rodzajami panwi o różnej sztywności.

Water absorption and blistering of glass fibre-reinforced polymer marine laminates with nanoparticle-modified coatings

Publication

- JOURNAL OF COMPOSITE MATERIALS - Year 2014

Macro and microstructural damage was studied in typical glass fibre-reinforced polymer laminates with two types of coating systems – (a) isophtalic gel coat: pure or mixed with SiO2 nanoparticles 5 wt% (5%N) or 10 wt% (10%N) and (b) a two-layer coating system: urethane-modified vinyl ester-based gel coat and additional polyester barrier coat layer. Accelerated tests were performed at 50C for 50 days for specimens with nanoparticle-modified...

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Effect of some organic solvent - water mixtures composion on precipitated calcium carbonate in carbonation process

Publication

- JOURNAL OF CRYSTAL GROWTH - Year 2015

Precipitated calcium carbonate particles were obtained during carbonation of calcium hydroxide slurry with carbon dioxide. Aqueous solutions of isopropyl alcohol, n-butanol and glycerol were used as solvents. Concentration of organic additives in the reactive mixture was from 0 to 20 % (vol.). Precipitation process were performed in a stirred tank reactor equipped with gas distributor. Multimodal courses of particles size distribution...

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Critical evaluation of employment possibilities of OTT technique for isolation of the PAHs and PCBs from samples of water

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- Year 2005

W pracy przedstawiono krótki przegląd technik wykorzystywanych na etapie izolacji i/lub wzbogacania analitów z grupy WWA i PCB z próbek wody. W części doświadczalnej dokonano oceny możliwości wykorzystania krótkiego odcinka kapilarnej kolumny chromatograficznej jako pułapki sorpcyjnej na etapie izolacji i wzbogacania analitów z grupy WWA i PCB z próbek wody. Ponadto przedstawiono wpływ zjawiska sorpcji analitów na ściankach używanych...

Impact of Volcanic Eruptions on the Occurrence of PAHs Compounds in the Aquatic Ecosystem of the Southern Part of West Spitsbergen (Hornsund Fjord, Svalbard)

Publication

K. Kozak
M. Ruman
K. Kosek
G. Karasiński
S. Łukasz
Ż. Polkowska

- Water - Year 2017

The paper presents changes in concentration levels of dioxin-like compounds that can be observed over the course of four study seasons in water samples collected from the Arctic watershed of Svalbard. The conducted analysis involved anthropogenic and natural factors that may affect the concentration of PAHs in the study samples of water. An attempt is made to indicate the emission source of the compounds being deposited and to...

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Subsoil degradation effect in reliability analysis of the jack-up platform structure

Publication

- Logistyka - Year 2015

Structural reliability analysis is considered, by FORM and SORM applied to a certain idealized soil-platform structure interaction problem due to cyclic water wave and wind loads. Wave and wind loads are random variables, whereas dead load is deterministic. Load parameters are typical for storm conditions in the Baltic Sea. The soil-structure interaction is idealized as a set of linear translational and rotational springs. Due...

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Mathematical Modeling of Ice Thrusting on the Shore of the Vistula Lagoon (Baltic Sea) and the Proposed Artificial Island

Publication

- Water - Year 2019

Coastal lagoons are inland and shallow water bodies, separated from the ocean by a barrier. In cold regions, ice phenomena in shallow water coastal lagoons occur every winter season. Ice is predominantly formed on the surface due to density stratification and surface cooling. The ice dynamics in such areas are dominantly affected by winds. Water dynamics also cause ice movement, but due to the large areal scale of lagoons, the...

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Investigation of vortex assisted magnetic deep eutectic solvent based dispersive liquid–liquid microextraction for separation and determination of vanadium from water and food matrices: Multivariate analysis

Publication

N. Altunay
M. Farooque Lanjwani
M. Tuzen
G. Boczkaj

- JOURNAL OF MOLECULAR LIQUIDS - Year 2024

A new and simple vortex assisted magnetic deep eutectic solvent dispersive liquid–liquid microextraction procedure (VA-MDES-DLLME) was developed for the determination of vanadium (V) in food and water samples by flame atomic absorption spectrometry (FAAS). In the extraction medium, a bis(acetylpivalylmethane) ethylenediimine (H2APM2en) was used for the complexation of V(V) in sample solution at pH 6. The VA-MDES-DLLME was optimized...

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Chemometric Evaluation of WWTPs’ Wastewaters and Receiving Surface Waters in Bulgaria

Publication

V. Mihaylova
G. Yotova
B. Kudłak
T. Venelinov
T. Stefan

- Water - Year 2022

Wastewater treatment plant (WWTP) installations are designed and operated to reduce the quantity of pollutants emitted to surface waters receiving treated wastewaters. In this work, we used classical instrumental studies (to determine chemicals and parameters under obligations put with Directive 91/271/EEC), ecotoxicological tools (Sinapis alba root growth inhibition (SA-RG) and Heterocypris incongruens mortality (MORT) and growth...

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Review on the quality of sediments from the stormwater drainage system in the urban area

Publication

- Year 2017

The main task of the stormwater drainage system is a safe drainage of rainwater and snowmelt from the urban area to the receiver. The flow of rain water in the drainage pipes is directly related with the formation of sediments in the whole stormwater system. In addition, pollutants from land runoff get adsorbed to the sediments. The sludge is mainly formed in those elements of stormwater drainage system, wherein the flow conditions...

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Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015–2016 snow accumulation season

Publication

E. Barbaro
K. Kozioł
M. P. Björkman
C. P. Vega
C. Zdanowicz
T. Martma
J. Gallet
D. Kępski
C. Larose
B. Luks... and 4 others

- ATMOSPHERIC CHEMISTRY AND PHYSICS - Year 2021

The Svalbard archipelago, located at the Arctic sea-ice edge between 74 and 81∘ N, is ∼60 % covered by glaciers. The region experiences rapid variations in atmospheric flow during the snow season (from late September to May) and can be affected by air advected from both lower and higher latitudes, which likely impact the chemical composition of snowfall. While long-term changes in Svalbard snow chemistry have been documented in...

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Analysis of effects of formation of non-condensable gases and water vapor during a severe accident in a boiling water nuclear reactor Analiza skutków powstawania niekondensujących gazów i pary wodnej podczas ciężkiej awarii wrzącego reaktora jądrowego

Publication

P. Darnowski

- Przemysł Chemiczny - Year 2017

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Implementation of Solute Transport in the Vadose Zone into the “HYDRUS Package for MODFLOW”

Publication

S. Beegum
J. Šimůnek
A. Szymkiewicz
K. Sudheer
I. Nambi

- GROUND WATER - Year 2018

The “HYDRUS package for MODFLOW” is an existing MODFLOW package that allows MODFLOW to simultaneously evaluate transient water flow in both unsaturated and saturated zones. The package is based on incorporating parts of the HYDRUS‐1D model (to simulate unsaturated water flow in the vadose zone) into MODFLOW (to simulate saturated groundwater flow). The coupled model is effective in addressing spatially variable saturated‐unsaturated...

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Heavy Metals in a High Arctic Fiord and Their Introduction with the Wastewater: A Case Study of Adventfjorden-Longyearbyen System, Svalbard

Publication

- Water - Year 2020

Longyearbyen is the largest settlement on Svalbard archipelago, with 2400 permanent residents and approximately 150,000 tourists visiting every year. The city annually releases approximately 285,000 m3 of untreated wastewater to the nearby Adventfjorden. To date, the environmental impact of this continuous input has been studied mainly regarding the sediments and benthic fauna in the fiord. Here, we present results from a study...

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Assessing groundwater vulnerability to sea water intrusion in the coastline of the inner Puck Bay using GALDIT method

Publication

- Year 2018

In this research, GALDIT method was used to assess seawater intrusion in the coastal aquifer of the inner Puck Bay (Southern Baltic Sea). The impact of potential sea-level rise on groundwater vulnerability for years 2081-2100 was also considered. The study area was categorized into three classes of vulnerability: low, moderate and high. The most vulnerable area is the Hel Peninsula with northern part of the Kashubian Coastland....

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Assessing groundwater vulnerability to sea water intrusion in the coastline of the inner Puck Bay using GALDIT method

Publication

- E3S Web of Conferences - Year 2018

In this research, GALDIT method was used to assess seawater intrusion in the coastal aquifer of the inner Puck Bay (Southern Baltic Sea). The impact of potential sea-level rise on groundwater vulnerability for years 2081-2100 was also considered. The study area was categorized into three classes of vulnerability: low, moderate and high. The most vulnerable area is the Hel Peninsula with northern part of the Kashubian Coastland....

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Solubility of sulfanilamide in binary solvents containing water: Measurements and prediction using Buchowski-Ksiazczak solubility model

Publication

T. Jeliński
N. Bugalska
K. Koszucka
M. Przybyłek
P. Cysewski

- JOURNAL OF MOLECULAR LIQUIDS - Year 2020

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Vibrational spectroscopic studies of N,N'-dimethylpropyleneurea-water system: Affected solvent spectra and factor analysis

Publication

M. Śmiechowski

- SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY - Year 2011

Zmierzono widma FT-IR układu N,N'-dimetylopropylenomocznik (DMPU) - woda w całym zakresie składów w zakresie 4000-500 cm-1 przy użyciu techniki całkowitego wewnętrznego odbicia (ATR). Hydratacja DMPU została dodatkowo zbadana przy pomocy transmisyjnej spektroskopii FT-IR izotopowo rozcieńczonej HDO w H2O. Widma zanalizowano przy użyciu ilościowej wersji metody widm różnicowych, prowadzącej do wyizolowania widma rozpuszczalnika...

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Stability analysis of the internal cylindrical shell wall of a vertical double shell tank under a water test.

Publication

- Year 2002

Przedstawiono analizę zagrożenia stateczności lokalnej płaszcza wewnętrznego przy różnicy poziomów wody w zbiorniku wewnętrznym i przestrzeni międzypłaszczowej podczas próby wodnej zbiornika. Podano krytyczne różnice poziomów wody dla typowych zbiorników o pojemności od 10 000 do 100 000 m3.

Determination of ionic concentration in water using reflectometric optical reader. IV Workshopon Atomic and Molecular Physics.

Publication

A. Stańczak

- Proceedings of SPIE - Year 2003

W artykule zaprezentowano reflektometryczną metodę oznaczania stężenia jonów w wodzie wykorzystując suche testy. Kształt widma reflektancyjnego pola testowego jest proporcjonalny do stężenia jonu w roztworze.

Research of low-speed high torque planet motors supplied with oil-in-water emulsion as working liquid.

Publication

P. Śliwiński

- Year 2004

Większość hydraulicznych układów napędowych obecnie jest zasilanych olejami. Ale olej jako medium robocze nie może być stosowany wszędzie tam, gdzie istnieje ryzyko pożaru. dlatego też są stosowane trudnopalne i niepalne ciecze hydrauliczne ja: emulsje, mikroemulsje i roztwory. W referacie opisano stanowisko badawcze zaprojektowane i zbudowane w Katedrze Hydrauliki i Pneumatyki PG, przedstawiono wyniki badań hydraulicznego silnika...