Wszystkie pola: environmental water analysis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Towards automation of measurement processes of surface water parameters by a remote-controlled catamaran
Autorzy:: Wiora, A.
Kozyra, A.
Wiora, J.
Powiązania:: https://bibliotekanauki.pl/articles/201946.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: measurement automation
remote controlled boat
environmental water analysis
potentiometry
automatyka pomiarowa
zdalnie sterowana łódź
analiza środowiska wodnego
potencjometria
Opis:: This paper describes a way of determining selected water parameters using a prototype of a remote-controlled catamaran. The remote controlling allows to steer the boat and to manage the measurement process from the shore. It is possible to monitor the water parameters online as well as to store them and analyze them afterwards. The measured parameters are determined mainly using potentiometric methods and include several ion concentrations. The system is orientated towards monitoring breeding ponds or other similar surface waters. The mechanical construction of the catamaran, its electronic circuits and implemented software are described in detail in the paper. Conclusions obtained from preliminary tests are also included. The described construction allows analysts to perform simple and inexpensive remote measurements or assessments of water quality and reduces the time of such analysis in comparison to traditional sampling.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 3; 351-359
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Environmental protection and water management of the country - analysis of expenditures on fixed assets, improving the condition of the environment in Poland
Autorzy:: Imiołczyk, Justyna
Powiązania:: https://bibliotekanauki.pl/articles/1075637.pdf
Data publikacji:: 2019
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: environmental protection
sustainable development
water management
Opis:: The following study addresses the subject of environmental protection in the country. The essence of this concept was explained and its role in shaping eco-development was determined. The most important investment expenditures designated for the improvement of the level of environmental protection and water management in Poland were indicated. The amount of funds spent on fixed assets to improve the state of the environment was scaled.
Źródło:: World Scientific News; 2019, 125; 159-168
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Simple, responsive and cost effective simultaneous quantification of Ga(III) and In(III) in environmental water samples
Autorzy:: Grabarczyk, M.
Adamczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/2082480.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: gallium(III)
indium(III)
trace analysis
environmental
water samples
Opis:: The simultaneous determination of Ga(III) and In(III) in environmental water samples was described. The procedure was based on adsorptive stripping voltammetry using an in situ plated bismuth film electrode as a working electrode. In order to obtain low detection limits and satisfactory separations of gallium and indium peaks on the voltammogram, cupferron was used as a complexing agent. The optimum composition of the supporting electrolyte was found to be: 0.1 mol l-1 acetate buffer (pH=5.0), 2 × 10-4 mol l-1 cupferron, 2 × 10-4 mol l-1 Bi(III), optimal voltammetric parameters were found to be: accumulation potential -0.9 V, accumulation time 60 s. The linear range of Ga(III) as well as In(III) was observed over a concentration range from 2.5 × 10-8 mol l-1 to 1.5 × 10-6 mol l-1. The method was satisfactorily applied to the simultaneous quantification of gallium and indium in environmental water samples. This facilitated a promising application of the recommended procedure for monitoring the environment, which is necessary to evaluate the soil-plant system.
Źródło:: International Agrophysics; 2019, 33, 2; 161-166
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Thermo-economic analysis and environmental aspects of absorption refrigeration unit operation onboard marine vehicles: RO- PAX vessel case study
Autorzy:: Ammar, N. R.
Sediek, I. S.
Powiązania:: https://bibliotekanauki.pl/articles/260242.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: ship emissions
IMO
lithium bromide-water ARU
thermodynamic analysis
economic and environmental analysis
Opis:: Marine diesel engines lose a huge amount of fuel heat content in the form of exhaust gas and jacket cooling water, especially onboard high-powered marine vehicles such as Ro-Pax ships. In this paper, the possibility of using the waste heat of marine diesel engines as a source of heat for air conditioning absorption system is investigated. The thermodynamic analysis, in addition to the environmental and economic analysis of the air condition absorption cycle operated with two heat sources using lithium bromide as absorbent, are performed using the Engineering Equation Solver (EES) software. The last 10 years have seen a steady growth in the passenger ferry and Ro-Pax market, with particularly strong growth in passenger numbers. As a case study, a Ro-Pax vessel operating in the Red Sea area is considered, regarding the profitability of using air conditioning absorption system. The results show specific economic benefits of the jacket cooling water operated absorption refrigeration unit (ARU) over the exhaust gas operated unit, with annual costs of capital money recovery of 51,870 $/year and 54,836 $/year, respectively. Environmentally, applying an ARU machine during cruising will reduce fuel consumption by 104 ton/year. This, in turn, will result in reducing NOx, SOx, and CO2 emissions with cost-effectiveness of 7.73 $/kg, 20.39 $/kg, and 0.13 $/kg, respectively.
Źródło:: Polish Maritime Research; 2018, 3; 94-103
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Cost analysis of water charge rates in the Czech Republic – Case study
Autorzy:: Oblouková, Aneta
Vítková, Eva
Powiązania:: https://bibliotekanauki.pl/articles/36074702.pdf
Data publikacji:: 2024
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: water charge rates
calculation formula
water management companies
region
Czech Republic
vertical analysis
horizontal analysis
Opis:: The article was conceived as an initial insight into the issues related to the representation of individual type costs (e.g. material, labor costs, property depreciation, etc.) in the price of water in the Czech Republic. The aim of the article was to point out the possibility of dependence between the size of the company operating the infrastructural property of water supply and sewerage and the representation of individual costs in the water price within the framework of the case study. As a sample that formed the outputs of the case study, 14 companies were taken, which were selected according to the unified regions of the Czech Republic. Both basic mathematical methods and elementary methods used in financial analysis were used in the analysis. Within the scope of the case study, it can be stated that there is no dependence between the size of the companies and the representation of costs. Among the largest costs from the point of view of financial representation are other direct costs, where the costs of depreciation, property repairs, rental property, as well as wage costs and material costs are mainly represented. Insignificant costs include, for example, energy costs, which are only represented in the range of 1.39–5.70% of the total costs. Therefore, in order for the results included in the case study to be considered statistically relevant, it is necessary to expand the sample and confirm or refute the initial findings published in this article.
Źródło:: Scientific Review Engineering and Environmental Sciences; 2024, 33, 1; 33-52
1732-9353
Pojawia się w:: Scientific Review Engineering and Environmental Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Analysis of the Physicochemical Quality of Water Within the Hydropower Plant on the Ślęza River in Wrocław, Poland
Autorzy:: Tomczyk, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/2069885.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: water quality
hydropower plants
environmental impacts
renewable energy sources
Water Framework Directive
Opis:: The aim of the article was the analysis of the physicochemical quality of water within the hydropower plant on the Ślęza River in Wrocław (south-west Poland) in the context of the European Union's classification of water quality, as well as an assessment of the potential impact of hydropower plants on this quality. The study uses the results of monthly tests from three measurement points within the hydropower plant on the Ślęza River in the city of Wrocław (points upstream and downstream the hydropower plant and the reference point), from the period June 2018 to May 2020. The analyses covered 10 physicochemical parameters, i.e.: pH, electrical conductivity (EC), water temperature, turbidity, NH4-N, NO3-N, NO2- N, total phosphorus, dissolved oxygen and BOD5. The conducted analysis showed that the hydropower plant has no clear influence on the physicochemical quality of the water in the Ślęza River, other interactions present in the catchment area are more important. From the effects visible in the results, a decrease in the amplitudes of water temperature downstream the hydropower plant compared to the other points was noted, as well as a lower median of its value (statistically significant changes). An additional noticeable effect was the increase in water oxygenation below the damming, but it was not statistically significant. It has been shown that the physicochemical condition of water at the tested points does not meet the assumed standards for 8 out of 9 parameters (except for water temperature). The largest exceedances of the limit values concerned NO2-N (up to 923% of the norm), and the most consistent, almost constantly occurring – EC (23 out of 24 months). The reason for the high NO2-N content was most probably surface runoff from the fields and the re-suspension of sediments rich in nutrients, while in the case of EC, its high values result from the specificity of the catchment area.
Źródło:: Rocznik Ochrona Środowiska; 2021, 23; 795--810
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Environmental Protection and Improvement of Water Quality as a Factor in the Development of Tourism in the Erenik River
Autorzy:: Gashi, Bardha
Kuqi, Beke
Dreshaj, Adem
Powiązania:: https://bibliotekanauki.pl/articles/24201792.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: parameter
river
urban discharge
water analysis
water quality
Opis:: This paper examines the impact of urban discharges on the water quality of the Erenik River in the city of Gjakova, Kosovo which is the most of key factor in developing the tourism. The primary goal of this project-based research was to provide results through water analysis in order to show the impact of urban discharges on the water quality for the tourists coming. The research was carried out by taking water samples at the entrance and exit of the Erenik River, while the measured parameters of the analyses were: temperature, pH value, electrical conductivity, turbidity, permanganates, phosphorus; and chlorides. Due to the conditions, measurements were not performed for: biological and chemical expenditure, dissolved oxygen, and alkalinity of the water. In order to achieve reliable results, the experimental research model was used, applying the techniques and methods of water analysis during the period of November-December 2021. The analyzed water result and the final findings showed that urban wastes affect the water quality, in particular the pollution from the discharges in the river potentiating the condition in which the Erenik River is found.
Źródło:: Journal of Ecological Engineering; 2023, 24, 3; 333--340
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Analiza sposobów pomiaru oraz skutków deficytu zasobów wodnych na świecie
Analysis of ways of measurement and the consequences of water shortage in the world
Autorzy:: Thier, Agnieszka
Powiązania:: https://bibliotekanauki.pl/articles/433948.pdf
Data publikacji:: 2016
Wydawca:: Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:: deficit of water resources
water resources
water cycle
water management
economic policy
environmental policy
ecology
national income
Opis:: The paper presents a hydrological cycle that takes place in nature and addresses the concept of water resources and the methods of their measurement as well as the shortage of water resources. In the ensuing discussion, the paper assesses those conditions by the continents and regions, pointing out the difficult situation in Northern Africa, the Middle East and Central Asia. Further, it presents the investigation of the correlation between the volume of GDP and the particular features of water management within the continents. The results of calculations show differences, yet there is a clear correlation between the number of population, the water consumption and other indexes of water management. The paper ends with the conclusion that there is basically no shortage of water resources within the world economy, yet there is more and more acute crisis in water supply on the regional scale due to the insufficient water supply and sewerage infrastructure, improper economic policy and environmental policy, and poverty among large groups of population.
Źródło:: Śląski Przegląd Statystyczny; 2016, 14 (20); 111-130
1644-6739
Pojawia się w:: Śląski Przegląd Statystyczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Addressing Water Scarcity in Samdrupjongkhar Thromde, Bhutan : feasibility Study and Design of a Sustainable Gravity Water Supply System
Autorzy:: Tamang, Phurba
Tenzin, Rigden Yoezer
Tshering, Dawa
Sharma, Vasker
Powiązania:: https://bibliotekanauki.pl/articles/31340454.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: water supply
gravity water flow
EPANET analysis
water pipe system design
Opis:: The provision of a reliable water-supply system is essential for the development and well-being of urban communities. Samdrupjongkhar Thromde, located in Bhutan, has been facing water supply challenges despite the presence of a water treatment plant. The non-perennial nature of the current water source coupled with malfunctions in water pumps has led to acute water shortages in the municipality. To address this issue, this study carried out a feasibility investigation and designed a gravity water supply system by conducting an EPANET (Environment Protection Agency Network Evaluation Tool) analysis. The study involved field visits to identify potential water sources, and a topographic survey using RTK (Real Time Kinematics) technology to determine the optimal pipeline route. The EPANET analysis was then conducted to evaluate the hydraulic performance of the initial route. Based on these findings, a final water pipeline route was selected considering factors such as terrain characteristics, construction feasibility, avoidance of negative water pressure, and minimum encroachment of private land. The results showed that the maximum pressure head within the pipeline system reached 296 m with a maximum water flow velocity of 5 m/s. However, at the outlet, the pressure head decreased to 70 m and the velocity decreased to 2 m/s. Two Break Pressure Tanks (BPT) were strategically placed to achieve this pressure reduction. The chosen pipe materials and their placement ensure the long-term reliability and functionality of the water supply system, while considering maintenance convenience and terrain characteristics.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2023, 70, 1; 101-113
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The analysis of environmental and human impacts of using Strong Alkaline Water for cooling during machining
Autorzy:: Da Silva, P.
Tanabe, I.
Junior, D. C. R.
Takahashi, S.
Powiązania:: https://bibliotekanauki.pl/articles/99481.pdf
Data publikacji:: 2018
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: eco-friendly
strong alkaline water
emission
cooling
Opis:: An eco-friendly manufacturing approach is important for the environment. Enhancing machining performances is not only required to improve product’s quality, time saving, and reduces costs; it is also contributed to the environmental protection efforts. Cooling is important aspect for obtaining this purpose. Therefore the benefits of Strong Alkaline Water (SAW) cooling method was assessed and compared with conventional wet cutting method. An experiment was performed at Nagaoka University of Technology machining centre. Three machine tools including a milling machine, a drilling machine and a turning machine were used. The study shows that using SAW for cooling is far more efficient than conventional cooling method. It reduces annual global warming potential by 72.95%, acidification potential 98.18%, ozone depletion potential 99.6%, smog formation potential 85.71% and human toxicity potential 42.86% compare with conventional method. The study concludes that besides inhibiting corrosion, prolonging tool life, improving surface roughness of final cutting and reducing energy usage, strong alkaline water cooling is an environmentally friendly approach and has positive impact on human health.
Źródło:: Journal of Machine Engineering; 2018, 18, 1; 45-60
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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