Skocz do pozycji: 1.

Tytuł:

„Emotional defeats” of parents

Autorzy:

Mastalski, Janusz

Powiązania:

https://bibliotekanauki.pl/articles/668225.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Papieski Jana Pawła II w Krakowie

Tematy:

parents
emotions
defeats
toxic tactics

Opis:

In a family all kinds of conflicts and problems occur that affect both the parents and their children. The conflicts which are especially painful are those related to the inability of parents to deal with their own emotions and feelings. In this article, after clarifying the main concepts, the author first discusses the typical features of parental emotions and feelings (creativity, proximity, intensity) in order to identify the reasons for “emotional defeats” (the inability to express emotions, the inability to recognize emotions, emotional liability, “getting stuck” in some emotion, harmful suppression of emotions, masking of one’s feelings, stress, fatigue, addiction). Secondly, the author describes their effects (codependency, emotional distance, weakening of emotional ties, superficiality, impaired communication, “internal emigration”, family identity crisis). At the end, he discusses toxic tactics in dealing with these defeats (suppression; avoidance; pretending they do not exist; transfer of emotions on others; resignation in coping with emotions). Consequentially, these tactics lead them to formulate remedies. A discussion of these solutions concludes the article.

Źródło:

The Person and the Challenges. The Journal of Theology, Education, Canon Law and Social Studies Inspired by Pope John Paul II; 2017, 7, 1
2391-6559
2083-8018

Pojawia się w:

The Person and the Challenges. The Journal of Theology, Education, Canon Law and Social Studies Inspired by Pope John Paul II

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Influence of Ozone Aeration on Toxic Metal Content and Oxygen Activity in Green Waste Compost

Autorzy:

Gliniak, M.
Grabowski, Ł
Wołosiewicz-Głąb, M.
Polek, D.

Powiązania:

https://bibliotekanauki.pl/articles/124489.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

compost
ozone
toxic metals

Opis:

This paper presents the results of work on the reduction of toxic metal content while decreasing its oxygen activity. During the study the effects of different doses of ozone in the air used for aeration of the stabilized compost in the first post-thermophilic phase were analyzed. The results showed the possibility of reducing the concentrations of toxic metals and decrease the activity of oxygen by up to 30%, compared to traditional stabilized compost aeration system without using ozone.

Źródło:

Journal of Ecological Engineering; 2017, 18, 4; 90-94
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

John William Trevan’s concept of Median Lethal Dose (LD50/LC50) – more misused than used

Autorzy:

Pillai, S.K.
Kobayashi, K.
Michael, M.
Mathai, T.
Sivakumar, B.
Sadasivan, P.

Powiązania:

https://bibliotekanauki.pl/articles/2098545.pdf

Data publikacji:

2021

Wydawca:

Instytut Medycyny Wsi

Tematy:

lethal dose
toxic substance
acute toxicity

Opis:

Introduction: Median lethal dose (MLD) has been a controversial subject among biologists and animal ethicists since its inception in 1927 by Trevan. Toxicologists use MLD (LD50) as the first step to assess the toxicity of a substance. Animal ethicists criticize LD50 tests because animals suffer pain, and LD50 is irreproducible. The disadvantage of classifying chemicals based on LD50, the importance of the ‘characteristics’ proposed by Trevan, and the ideal mortality range for determining the best estimate of LD50 are also discussed. Objective: The aim of this review was to understand Trevan’s concept of LD50 and the method of Litchfield and Wilcoxon (L and W), and Finney’s probit analysis for LD50 determination Materials and method: A literature survey was conducted using Google search and Pubmed. Simulated data set was used for identifying the ideal mortality range for calculating the ‘best estimate’ of LD50. Brief description of the state of knowledge: After Trevan, the extensively used classical methods for LD50 determination are Finney’s probit analysis and the L and W method. Animal ethicists questioned LD50, because of its irreproducibility. Presently used methods for LD50 tests do not provide information on the dose-response, hence assessing the complete spectrum of toxicity is not possible. However, LD50 is used to classify chemicals. Conclusions: 'The 'characteristic' is more specific than the slope or LD50 of a dose-response curve. LD50 does not manifest the exact nature of the toxicity of a substance; hence, classifying chemicals based on LD50s may have little relevance

Źródło:

Journal of Pre-Clinical and Clinical Research; 2021, 15, 3; 137-141
1898-2395

Pojawia się w:

Journal of Pre-Clinical and Clinical Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Determination of metals in sea water of the Baltic Sea in Międzyzdroje

Autorzy:

Daniszewski, P.

Powiązania:

https://bibliotekanauki.pl/articles/412273.pdf

Data publikacji:

2013

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

toxic heavy metals
sea water
Baltic Sea

Opis:

The present research work deals with the quantification of toxic heavy metals in the water samples collected from sea water in Międzyzdroje. While the annual average concentration of Cadmium was calculated as 0.44 ppm in 2008 of the year and 0.46 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 2.67 ppm in 2008 of the year and 2.64 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface water. The observed annual average concentration of Copper in the water was 0.08 ppm in 2008 of the year and 0.05 ppm in 2009 of the year, which was below the permissible limit of 3.0 ppm set for inland surface water. While the annual average concentration of Mercury was calculated as 0.05 ppm in 2008 of the year and 0.05 ppm in 2009 of the year, which was very much above the maximum limit of 0.01 ppm set for inland surface water. The annual average concentration of Nickel in the water samples was observed to be 2.47 ppm in 2008 of the year and 2.70 ppm in 2009 of the year, which is close to the limit of 3.0 ppm set for inland surface water. The annual average concentration of Lead in the water samples was observed to be 0.06 ppm in 2008 of the year and 0.05 ppm in 2009 of the year, which is above the permissible limit of 0.1 ppm set for inland surface water. The results of the present investigation indicate that the annual average concentration of Zinc in water samples was 3.45 ppm in 2008 of the year and 3.73 ppm in 2009 of the year, which is above the permissible limit of 5.0 ppm set for inland surface water.

Źródło:

International Letters of Chemistry, Physics and Astronomy; 2013, 13; 13-22
2299-3843

Pojawia się w:

International Letters of Chemistry, Physics and Astronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

The investigations of fume emissions of engines

Autorzy:

Żółtowski, B.

Powiązania:

https://bibliotekanauki.pl/articles/243973.pdf

Data publikacji:

2008

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engines
toxic fume components
environmental protection

Opis:

The results of the investigations of the post and exploitation emissions of the harmful components of the fumes of engines from CI were introduced In the work. Obtained results were subjected to a statistical study according to new computer procedures. Qualitative and quantitative reports were established for the level and kind of emission in reference to the changes of the state of studied engines. The need for detailed analysis ofphenomena changes of state destruction of the examined engines, with a vast number of measuring data, requires the use of specialized methods of statistical concluding. The presented results were submitted to statistical analysis, where the methods OPTIMUM and AVD were used, as well as correlation and regression methods. It gave the possibility of quality and quantity comparison of results of fumes contents from stationary tests and exploitation researches. The results of this research allow a model (mathematical relations) determination of relations between smoking and the quantity of toxic fume components of a high-pressure engine. The performed tests and analyses in his work's researches indicate tothe conclusions: in the engine of self-acting ignition (CI) the emission of carbon oxide (CO), hydrocarbons (HC) and smoking are considerable, especially during start-up and engine warming; along with the decrease of environment temperature, the emission of CO, HC and smoking increase, whilst the quantity of NOx goes down, providing premises confirming the specified regulations of forming dangers on the side of engine fumes emission; the phases of start-up and warming up of the CI engine are characterized by increased fuel usage and increased emission of carbon oxide - CO, giving information and sensitising vehicle users to these harmful for the engine working conditions, the influence of environment temperature on the emission and smoking of fumes during hot start-ups is weaker than during cold start-ups.

Źródło:

Journal of KONES; 2008, 15, 2; 579-592
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Analysis of the accidental release of chlorine

Autorzy:

Stolecka, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/88684.pdf

Data publikacji:

2019

Wydawca:

Stowarzyszenie Menedżerów Jakości i Produkcji

Tematy:

chlorine
hazard zones
toxic
chlor
strefy zagrożenia

Opis:

Due to its properties, chlorine is one of the highly toxic substances used by humans. This gas attacks the respiratory system, eyes and skin. In higher concentrations, its inhalation leads to death. It is mainly used in water treatment plants where it guarantees a bacteriologically safe water in water supply systems. It is also used as a disinfectant and bleaching agent. The use, transport and storage of chlorine may pose serious hazard associated with its uncontrolled release from technological installations or tanks. The level of this threat will depend on the run of the release scenario or meteorological conditions. The article presents an analysis of the hazards associated with the uncontrolled release of chlorine. The ranges of zones with dangerous level of gas concentration are presented as a result of its instantaneous and continuous release.

Źródło:

System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 149-155
2657-5450

Pojawia się w:

System Safety : Human - Technical Facility - Environment

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Groundwater Contamination and Health Risk Evaluation of Naturally Occurring Potential Toxic Metals of Hatiya Island, Bangladesh

Autorzy:

Rahman, Mahfuzur
Khan, Md. Sadril Islam
Hossain, Mohammad Sabbir
Hossain, Md. Imam Shohel
Hasan, Mahmudul
Hamli, Hadi
Mustafa, M. Golam

Powiązania:

https://bibliotekanauki.pl/articles/2105279.pdf

Data publikacji:

2022

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

drinking water
toxic elements
pollution indices
Hatiya Island

Opis:

Groundwater meets the majority portion of drinking water needs, particularly in the rural area of Bangladesh. Groundwater has been continuously contaminated by potentially harmful metals as a result of natural processes as well as some anthropogenic activities, creating a variety of health impacts. The current research aimed to evaluate the naturally occurring level of metal contamination and the human health risk associated with deep groundwater in the Hatiya Island. Because of the arsenic, iron, and salinity problem in shallow groundwater, the inhabitants of the Hatiya Island use deep groundwater. During the field investigation, no shallow tubewells were observed; therefore, only deep groundwater samples were collected. The total sample size collected throughout the Hatiya island was 17. Five metals (Zn, Fe, Mg, Mn, and Cu) were analyzed using an Atomic Absorption Spectrophotometer (AAS). The concentrations of studied potential risky metals were ranked as follows: Mg > Zn > Fe >Mn> Cu. The detected values of all metals except Fe were found within the drinking water limits of WHO (2017), BIS (2012), and BDWS (1997), where only 29.41% of the Fe sample exceeded the standard drinking limits. According to the metal evaluation index (MEI) and degree of contamination (Cd), the groundwater of the study area is free from contamination but the metal pollution index (MPI) and nemerow pollution index (NI) exhibited little pollution in the mid-western part of the study area. The hazard quotient (HQ) values revealed no oral and dermal health risk for individual metals (Cu, Zn, Fe, Mn). On the other hand, the hazard index (HI) values exhibited no risk for combined metals as none of the values exceeded the safety limit value of 1. According to the HQ and HI results, the deep groundwater on Hatiya Island is non-carcinogenic and risk-free for children and adults. However, children were more susceptible to oral health risks than adults. In contrast, adults were more vulnerable to dermal health risks than children.

Źródło:

Journal of Ecological Engineering; 2022, 23, 6; 223--236
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Beneficiation of arsenic bearing complex sulphide ore by flotation

Autorzy:

Gul, A.
Bulut, G.
Sirkeci, A. A.

Powiązania:

https://bibliotekanauki.pl/articles/110834.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

arsenic
non-toxic depressants
sulphide minerals
flotation

Opis:

In this study beneficiation of a sulphide ore from the Gümüşhane-Black Sea Region of Turkey was investigated. Detailed flotation studies were carried out with the ore sample which contained 2.95% Pb, 6.72% Zn and 0.32% Cu. Mineralogical analyses showed that the sample includes pyrite, galena, sphalerite, chalcopyrite, tennantite, cerussite, anglesite and smithsonite. On the other hand, hematite, goethite, limonite, calcite and quartz were determined as gangue minerals. Selective sulphide concentrates with low arsenic content were tried to be produced by froth flotation. Individual concentrates of Pb, Zn and Cu assayed 67.54% Pb, and 61.49% Zn and 23.31% Cu where corresponding recoveries were 73.0% and 77.1% and 38.7%, respectively. Arsenic contents were less than 2000 ppm in the lead and zinc con-centrates. Copper concentrate assayed 5.03% As since the major copper minerals were in tennantite form (copper arsenic sulphide mineral). In flotation tests, non-toxic reagents such as metabisulphite, caustified starch, and activated carbon were used to depress minerals in relevant circuits.

Źródło:

Physicochemical Problems of Mineral Processing; 2013, 49, 1; 203-212
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Use of Phytomeliorant Plants for Waste Water Purification

Autorzy:

Issayeva, Akmaral U.
Yeshibayev, Arystanbek A.
Tleukeyeva, Assel Ye.
Issayev, Yerzhan B.

Powiązania:

https://bibliotekanauki.pl/articles/1955577.pdf

Data publikacji:

2021

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

phytomeliorant plant
wastewater
purification
toxic ingredient
phytoremediation

Opis:

The use of phytomeliorant plants is one of the promising trends in environmental biotechnology to purify waste water. The study was carried out to understand the phytomeliorative qualities of plants of the indigenous flora of the Turkestan Region under controlled conditions and to develop a method for treating wastewater. It was established that the use of a three-stage treatment of municipal wastewater using phytomeliorant plants: Ceratophуllum demersum L., Potamogeton trichoides Cha. Et Schlecht., Potamogeton pectinatus L., Potamogeton natans L.; Cardamine densiflora N. Gontsch., Sium sizaroideum DC.; Veronica beccabunga L, Veronica anagallis aquatica L. and Azolla caroliniana Willd for 30 days of the controlled experiment reduces the content of organic and mineral ingredients to the MPC values. A method for phyto-meliorative wastewater treatment of one of the sanatoriums in the south of Kazakhstan was developed and carried out in multi-stage bioponds, where water was purified from mineral and organic compounds by 94.9 ± 8.3 – 98.9 ± 7.8% in 12 days. In this study, first of all, nitrogenous compounds were utilized, then there was an active absorption of mineral ions and residual organic matter by plants. In conclusion, significant purification of wastewater was achieved by using indigenous phytomeliorant plants in much shorter time period.

Źródło:

Journal of Ecological Engineering; 2021, 22, 9; 48-57
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Concentration of Toxic Metals in Agricultural Land and Wheat Culture (Triticum Aestivum L.)

Autorzy:

Dreshaj, Adem
Millaku, Bedri
Gashi, Arian
Elezaj, Elvis
Kuqi, Bekë

Powiązania:

https://bibliotekanauki.pl/articles/2027787.pdf

Data publikacji:

2022

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

toxic metals
national road
wheat
vehicle pollution

Opis:

Concentrations of heavy metals in the soil such as: (Pb, Cd, Zn and Cr), play a role in contamination of agricultural crops such as wheat (Triticum aestivum L.). Roads in the Republic of Kosovo are congested with traffic; in addition, over 55% are more than 20 years old. The agricultural land near roads in Kosovo is cultivated with agricultural products, especially wheat. This study aimed to investigate the concentration of toxic metals in soil and wheat crops due to vehicle emissions. In this research are examined the physico-chemical factors that affect the mobility of metals in the soil of the research area as; pH, concentration of organic carbon and heavy metals such as: (Pb, Cd, Zn and Cr). Analytical research shows that the content of toxic metals decreases with increasing distance or along highways. The concentration tests of toxic metals near roads and lands planted with analyzed agricultural crop of corn showed that heavy metal deposits also depend on atmospheric conditions and emissions from vehicle traffic.

Źródło:

Journal of Ecological Engineering; 2022, 23, 2; 18-24
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Diesel engines with respect to Euro 6 and Bin5/Lev II emission limits

Autorzy:

Brzeżański, M.

Powiązania:

https://bibliotekanauki.pl/articles/247277.pdf

Data publikacji:

2011

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engines
emission of toxic components of exhaust gases

Opis:

The article presents future requirements concerning emission of toxic components of exhaust gases valid for Diesel engine passenger cars. Questions connected with fulfilment of these standards were discussed. Chosen structural solutions permitting fulfilment of future requirements concerning emission were presented. In Europe passenger cars equipped with Diesel engines which get the homologation certificate for the first time the emission limit determined by the standard Euro 6 will be binding from year 2014. The relation to the at present binding limit Euro 5 emission of nitric oxides, the sum of hydrocarbons and nitric oxides as well as emission of particulate matter must be reduced. On the European market use could be made of experience gained during exploitation heavy duty vehicles in which decrease in nitric oxides emission is achieve by means of selective catalytic reduction (SCR). A more complex system of emission appraisal is valid in USA and especially in the states where the so called Californian standards were adopted. On the example of Volkswagen 2.0 TDI engine it was shown that in modern constructions of combustion engines there is still a large developmental potential. In this case the development went in the direction of fulfilment of new very requiring standards of emission of toxic components of exhaust gases. Well known in Europe 2.0 TDI engine which in its new version fulfils the most strict emission standards BIN5/LEV II constitutes the structural basis of the drive unit designed for the American market. Under such conditions the firm Volkswagen belongs to the small number of cars producers who for a couple of year have offered with success, passenger cars equipped with Diesel engines.

Źródło:

Journal of KONES; 2011, 18, 4; 33-40
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Toxic metals (Cd, Pb) in flatfish, mollusc Macoma balthica, water and sediments from the southern Baltic Sea

Autorzy:

Polak-Juszczak, L.

Powiązania:

https://bibliotekanauki.pl/articles/1190197.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Tematy:

Baltic Sea
toxic metals
flatfish
Macoma balthica
sediment
water

Opis:

Environmental pollution is a worldwide problem, with toxic metals being among the most noxious pollutants. Aquatic organisms can accumulate toxic elements from their environment through different pathways, including water, diet and sediments. The aim of the study was to determine the distribution of toxic metals (Cd and Pb) in tissues of three species of flatfish (Platichthys flesus, Pleuronectes platessa, Scophthalmus maximus), and in their environment (water, sediment and their prey mollusc Macoma balthica) in four regions of the southern Baltic Sea, in order to identify the most important pathways of metal uptake in these fish. The concentrations of toxic metal were measured in a graphite furnace by atomic absorption spectrometry. Toxic metal concentrations in flatfish liver were significantly higher than in the muscle tissue. The liver was the target organ for Cd and Pb accumulation. The flatfish liver, M. balthica, sediment, and water from the Gulf of Gdansk contained higher level of Pb than did the samples from the central Baltic Sea coast. The Pb concentrations in the liver of P. flesus and P. platessa showed positive correlations with Pb in the soft tissue of M. balthica, sediment and sea water. The high correlation coefficient values for Pb suggest that flatfish took up this metal through the food chain from molluscs. In turn, M. balthica took up Pb and Cd from sediment and water, which was confirmed by the high correlation coefficients for these metals between this mollusc and sediment and water. The positive correlations for concentrations Pb and Cd in sediment and in water indicate the next stage of the pathway along which the metals travel in the Baltic Sea environment.

Źródło:

Journal of Elementology; 2017, 22, 2; 487-496
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:

Mercury fluxes through the sediment water interface and bioavailability of mercury in Southern Baltic Sea sediments

Autorzy:

Beldowski, J.
Miotk, M.
Pempkowiak, J.

Powiązania:

https://bibliotekanauki.pl/articles/49177.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Oceanologii PAN

Tematy:

speciation
sediment
remobilization
Baltic Sea
bioavailability
mercury
toxic metal

Opis:

Sediment cores collected in several areas of the southern Baltic were analysed for total mercury (HgTOT) and five operationally defined mercury fractions: HgA – contained in pore waters, HgF – bound to fulvic acids, HgH – bound to humic acids, HgS – bound to sulphide, and HgR – residual. An effort was made to quantify mercury fluxes at the sediment/water interface in the study area. Net mercury input, calculated on the basis of sedimentation rate and concentration in the uppermost sediments, ranged from 1 to 5.5 ng cm−2 year−1. Mercury remobilisation from sediments due to diffusion and resuspension was calculated from the proportion of labile mercury and the velocity of near-bottom currents. The results showed that the return soluble and particulate fluxes of mercury from the sediments to the water column constitute a substantial proportion of the input (20–50%), and are slightly higher than those found in pristine areas, although they are less than the values recorded in areas with a history of mercury contamination. In addition, an index was developed to assess the methylation potential of mercury in sediments. Mercury contained in pore waters, and mercury bound to fulvic and humic acids together with Loss on Ignition were used to calculate the semiquantitative methylation potential (Pm). Despite the simplicity of this approach, Pm correlates well with methyl mercury in fish from the study area.

Źródło:

Oceanologia; 2009, 51, 2; 263-285
0078-3234

Pojawia się w:

Oceanologia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Impact of raw liquid natural gas composition on combustion properties and emission characteristic

Autorzy:

Czyżewski, Paweł
Ślefarski, Rafał
Jójka, Joanna

Powiązania:

https://bibliotekanauki.pl/articles/2204069.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

toxic compounds
fuel flexibility
liquid natural gas
NO emission

Opis:

The article presents the results of numerical and analytical investigations of the influence of raw liquid natural gas (LNG) composition on parameters characterizing the combustion process. The high content of higher hydrocarbons influences the thermodynamic combustion process described with parameters like the adiabatic flame temperature, laminar flame speed and ignition delay time. A numerical study of the impact of LNG fuels on emission characteristics using the Cantera code has been performed. Results have shown that the change of grid natural gas to some types of liquid natural gas can result in an incomplete combustion process and an increase of emission of toxic compounds such as carbon monoxide and unburned hydrocarbons. For all investigated fuels the laminar flame speed rises by about 10% compared to natural gas, while the adiabatic flame temperature is nearly the same. The ignition delay time is decreased with an increase of ethane share in the fuel. The analysis of chemical pathways has shown that hydrogen cyanide and hydrogen formation is present, particularly in the high temperature combustion regimes, which results in an increase of nitric oxide molar fraction in flue gases by even 10% compared to natural gas. To summarize, for some applications, liquid natural gases cannot be directly used as interchangeable fuels in an industry sector, even if they meet the legal requirements.

Źródło:

Archives of Thermodynamics; 2023, 44, 1; 3--21
1231-0956
2083-6023

Pojawia się w:

Archives of Thermodynamics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Arsenic, Cadmium, and Thallium Content in the Plants Growing in Close Proximity to a Zinc Works – Long-Term Observations

Autorzy:

Kicińska, Alicja

Powiązania:

https://bibliotekanauki.pl/articles/123666.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

potentially toxic elements
Agrostis capillaris
Betula pendula
zinc works

Opis:

The paper comprises an analysis of the As, Cd, and Tl content in two plant species (Agrostis capillaris and Betula pendula) commonly growing in the vicinity of the Miasteczko Śląskie Zinc Works, in the period of 1998–2018. In 2018, the As, Cd, and Tl content (in mg/kg) in the grasses was 1.10–1.68, 3.14–19.05, and 0.53–5.96, respectively, i.e. lower by 50–70%, compared to the year 1998. The As, Cd, and Tl content (in mg/kg) in birch leaves at the same time point was 0.74–1.54, 4.65–32.44, and 0.80–7.57, respectively, i.e. lower by 10–80%, compared to values found 20 years earlier. In all grass and birch leaf samples collected in 1998 and 2018, the content of the studied elements exceeded the so-called “natural levels”. The 1998 content of As, Cd, and Tl in the plants was due to the settling of dust containing industrial pollutants and reached 77–96%. After 20 years, the contribution of this source of pollution was considerably lower, reaching 63–79%. The performed analyses demonstrated the following mean contents of the analyzed elements in dust: 243 mg As/kg, 1113 mg Cd/kg, and 44 mg Tl/kg, which confirms the hypothesis on the major role of dust in the current soil and plant pollution. In all the habitats analyzed, a significant decrease of the transfer factor (TF) was found for As and Cd in 2018, compared to 1998. For Tl, a different observation was made. In three out of four analyzed habitats, TF decreased over the two decades studied, whereas in the remaining habitat, TF was higher in 2018 than in 1998 both for the grasses and for the birch leaves. Over the past 20 years, the most polluted area changed as well, from the land located closest to the zinc works, in the direction aligned with the most common winds, to the areas subject to the most intense settling of pollutants carried by the wind from unsecured heaps and industrial waste storage areas.

Źródło:

Journal of Ecological Engineering; 2019, 20, 7; 61-69
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Muzyczno-synestezyjna przestrzeń Mariny Cwietajewej w eseju autobiograficznym „Matka i muzyka”
Marina Tsvetaeva’s Musical and Synaesthetic Space in My Mother and Music, Her Autobiographical Essay

Autorzy:

Ojcewicz, Grzegorz

Powiązania:

https://bibliotekanauki.pl/articles/444676.pdf

Data publikacji:

2020-06-01

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

Marina Tsvetaeva
music
synesthesia
childhood
poetry
toxic mother

Opis:

The author presents Marina Tsvetaeva’s musical and synaesthetic space on the basis of My Mother and Music, her autobiographical essay. Synaesthesia, although present in the life of Tsvetaeva as a young child and adult poet, is not especially depict-ed in this particular piece of work. The writer chose her memories which encompass a significant period of time from her birth to her 42nd birthday as her main narrative focus. The musical sphere of the young child was presented through the piano and its attributes (the keyboard, pedals, music stand, metronome, notes, piano stool), which were a source of various – both positive and negative – experiences for this sensitive girl. Marina Tsvetaeva’s mother, unfulfilled as a pianist, undoubtedly played a toxic role in her musical education. Maria Tsvetaeva “drowned and killed her daughters with music”, making them feel an organic resistance towards required physical and mental efforts far too great for their age. The situation changed after her mother’s death when Marina could pour all her love for music into incredibly original lyric poetry, becoming one of the greatest writers of the 20th century.

Źródło:

Acta Neophilologica; 2020, XXII/1; 149-170
1509-1619

Pojawia się w:

Acta Neophilologica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Performance of Avicennia alba and Rhizophora mucronata as Lead Bioaccumulator in Bee Jay Bakau Resort, Indonesia

Autorzy:

Mahmudi, Mohammad
Adzim, Aliyyil
Fitri, Difia Helsa
Lusiana, Evellin Dewi
Buwono, Nanik Retno
Arsad, Sulastri
Musa, Muhammad

Powiązania:

https://bibliotekanauki.pl/articles/1839104.pdf

Data publikacji:

2021

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

Avicennia alba
Rhizophora mucronata
lead accumulation
toxic metals

Opis:

Mangroves are a crucial ecosystem in coastal areas and serve a significant ecological function. However, this ecosystem is under the continuous pressure of anthropogenic activities which create toxic contaminants, such as heavy metals. The presence of marine ports and electric steam power plants next to Bee Jay Bakau Resort (BJBR) Mangrove Forest may worsen the heavy metal pollution, especially in the case of non-essential metals like lead (Pb). The vegetation in mangrove ecosystems can help store and trap this contaminant. Therefore, the objective of this study was to determine the potency of the Avicennia alba and Rhizopora mucronata mangrove species, which dominate the mangrove vegetation in BJBR Mangrove Forest, as Pb phytoremediation agents. The samples were taken from the sediment, roots, stems, and leaves of the mangrove trees. The results showed that the Pb found in the sediment of these species ranged from 10.323 to 11.071 ppm, while the Pb concentration in the mangrove parts was less than 1 ppm with the order roots > stems > leaves. Furthermore, the statistical analysis indicated that there were no statistically significant differences in the Pb values across sites and species. Moreover, the BCF, BAC, and TF in this study were less than 1, making the observed mangrove species unsuitable for phytoextraction or phytostabilization.

Źródło:

Journal of Ecological Engineering; 2021, 22, 2; 169-177
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Toxic Elements in Mountain Soils (Little Beskids, Polish Carpathians)

Autorzy:

Jaguś, Andrzej
Skrzypiec, Mariusz

Powiązania:

https://bibliotekanauki.pl/articles/124957.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

toxic elements
mountain areas
soil contamination
soil acidity

Opis:

The research consisted in the analyses pertaining to the occurrence of elements regarded as toxic (Zn, Cu, Ni, Cr, As, Pb, Cd, Hg), the presence of which in the environment is mainly associated with economic-industrial activities in mountain soils. The research area of about 5 sq. km. included the hilltops and south-western slopes of the Magurka Wilkowicka massif. The massif is situated on the western edge of the Little Beskids near the area of Bielsko-Biała city. The concentrations of elements were measured in 50 soil samples taken from three zones: at the foothill of the massif (arable fields), on its slopes (forest areas) and on the hilltop (grassland). Additionally, the pH of the soil samples was determined. The research showed that zinc and, to a lesser degree, copper and nickel, occurred in the highest concentrations at the foot of the massif, near built-up areas, while the highest concentrations of arsenic and lead were detected in the hilltop part of the grassland. The concentrations of chromium, cadmium and mercury did not differ spatially. The analysed elements, especially zinc and lead, often occurred in the concentrations higher than those regarded as natural. It is a disturbing fact combined with serious acidity of the analysed soils (almost 60% of the samples were very acid soils), which may increase mobility of metals. The research shows that the soil environment of the Polish Carpathians may be contaminated with toxic elements not only in the neighbourhood of built-up areas, but also in the undeveloped land.

Źródło:

Journal of Ecological Engineering; 2019, 20, 1; 197-202
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Ozon bezpieczeństwo ludzi i środowiska
Ozone – the safety of people and the environment

Autorzy:

Makles, Z.
Galwas-Zakrzewska, M.

Powiązania:

https://bibliotekanauki.pl/articles/180896.pdf

Data publikacji:

2004

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

ozon
substancje toksyczne
regulacje prawne
ozone
toxic substances
law regulations

Opis:

Ozon odgrywa fundamentalną rolę w zachowaniu życia na Ziemi. Jego obecność w stratosferze zapobiega destruktywnemu oddziaływaniu promieniowania ultrafioletowego na przyrodę ożywioną, ma również wpływ na warunki pogodowe w różnych strefach geofizycznych globu ziemskiego. W materiale przedstawiono informacje o tym połączeniu, jego gospodarczym znaczeniu i wykorzystaniu oraz o czynnikach chemicznych zubożających warstwę ozonowa, a także o zagrożeniach dla ludzi i środowiska powodowanych zmniejszaniem się zawartości ozonu w atmosferze ziemskiej. Podano również przepisy prawne związane z ogólnie pojętą ochroną środowiska.
Ozone is an essential matter in life on Earth. Its presence in the stratosphere protects the living nature from the destructive effect of ultraviolet radiation. It affects weather conditions in various geophysical zones. In this paper we report on the economic importance of information about the impact of ozone on nature, ozone utilization and the effect of chemical substances depleting the ozone layer. In addition, we present regulations related to the environment and consequently to the protection of the atmosphere.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2004, 6; 25-28
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Selection of outfitting and decorative materials for ship living accommodations from the point of view of toxic hazard in the initial phase of fire progress

Autorzy:

Dobrzyńska, R.

Powiązania:

https://bibliotekanauki.pl/articles/258712.pdf

Data publikacji:

2009

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

fire safety of ship
quantitative method of toxic hazard assessment

Opis:

Upholstery furniture and bedding components which presently are required to satisfy conditions of resistance to only small fire setting sources, really constitute a serious source of toxic hazard. The proposed method of toxic hazard assessment in the initial phase of fire progress, due to thermal decomposition and combustion of materials, makes appropriate selection of outfitting materials for shipboard living and service accommodations already in ship design phase, possible. Practical application of the proposed algorithm of selection procedure of suitable outfitting and decorative materials intended for shipboard living accommodations would decrease fire toxic hazard level in such accommodations.

Źródło:

Polish Maritime Research; 2009, 2; 72-74
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

The effect of alternative fuels injection timing on toxic substances formation in CI engines

Autorzy:

Wojs, M. K.
Orliński, P.
Lasocki, J.

Powiązania:

https://bibliotekanauki.pl/articles/133347.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

biofuels
diesel engine
toxic substances
biopaliwa
silnik spalinowy
substancje toksyczne

Opis:

The present study describes selected issues associated with the emission level in toxic exhaust gases and fuel injection timing. The study was focused on the following types of fuels: Diesel oil (the base fuel) and the other fuels were the mixture of fatty acid methyl ester with Camelina (L10 – diesel fuel with 10% V/V FAME of Camelina and L20 – diesel fuel with 10% V/V FAME of Camelina) was used. Fuel injection advanced angle was set for three different values – the factory setting – 12° before TDC, later injection – 7° and earlier injection – 17°. The most important conclusion is that in most measurement points registered in the same engine operating conditions, the concentration of fuel NOx in L10 and L20 increased but PM emissions decreased which is caused by active oxygen located in the internal structure of the fuel. This fact contributes to the rise in temperature during the combustion process. At the same time factory settings of the angle makes NOx emissions lower and close to reference fuel.

Źródło:

Combustion Engines; 2017, 56, 1; 73-76
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

The concept of mobile, maritime system for location, assessment of technical condition, recovery and destruction of dumped chemical munitions

Autorzy:

Fabisiak, J.
Paczek, B.

Powiązania:

https://bibliotekanauki.pl/articles/30147146.pdf

Data publikacji:

2018

Wydawca:

Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki

Tematy:

chemical munitions
toxic warfare agents
BST
Baltic Sea
ecological threat

Opis:

After the World War II, acting under the terms of the Potsdam Agreement, the anti-Nazi coalition commenced destroying chemical and conventional munitions by dumping it in the seas (including in the Baltic Sea). As a result of these activities, tens of thousands of tons of ammunition were brought to the Baltic. The international project CHEMSEA has shown that dumped chemical munitions pose a threat to the environmental safety of the Baltic Sea, and that the need to collect and destroy munitions should be taken into account. The article describes the assumptions of a pilot system to identify chemical munitions in the Baltic Sea (including selected areas of the Polish Maritime Areas), assess its technical condition and the potential for its recovery. In addition, existing technical solutions (allowing for the use of the best available techniques – BAT) provide the opportunity to collect and neutralize sunken chemical munitions.

Źródło:

Scientific Journal of the Military University of Land Forces; 2018, 50, 2(188); 19-30
2544-7122
2545-0719

Pojawia się w:

Scientific Journal of the Military University of Land Forces

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Toxic Gases Detection and Tolerance Level Classification Using Machine Learning Algorithms

Autorzy:

Deepan, S.
Saravanan, M.

Powiązania:

https://bibliotekanauki.pl/articles/27311941.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

Artificial Sensing Methodology
Machine Learning
Toxic gases
Tolerance Detections

Opis:

With rapid population increases, people are facing the challenge to maintain healthy conditions. One of the challenges is air pollution. Due to industrial development and vehicle usage air pollution is becoming a high threat to human life. This air pollution forms through various toxic contaminants. This toxic contamination levels increase and cause severe damage to the living things in the environment. To identify the toxic level present in the polluted air various methods were proposed by the authors, But failed to detect the tolerance level of toxic gases. This article discusses the methods to detect toxic gasses and classify the tolerance level of gasses present in polluted air. Various sensors and different algorithms are used for classifying the tolerance level. For this purpose “Artificial Sensing Methodology” (ASM), commonly known as e-nose, is a technique for detecting harmful gases. SO2-D4, NO2-D4, MQ-135, MQ136, MQ-7, and other sensors are used in artificial sensing methods (e-nose). “Carbon monoxide, Sulfur dioxide, nitrogen dioxide, and carbon dioxide” are all detected by these sensors. The data collected by sensors is sent to the data register from there it is sent to the Machine learning Training module (ML) and the comparison is done with real-time data and trained data. If the values increase beyond the tolerance level the system will give the alarm and release the oxygen.

Źródło:

International Journal of Electronics and Telecommunications; 2023, 69, 3; 499--506
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Applying a Gouy–Chapman–Stern Model for Adsorption of Toxic Metals to Soils in Arsenic Affected Areas of Chhattisgarh

Autorzy:

Bhui, Ashish Kumar
Sen, Satish Kumar

Powiązania:

https://bibliotekanauki.pl/articles/1031874.pdf

Data publikacji:

2020

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Electrostatic models
Gouy-Chapman
heavy metal Phytoremidation
toxic metals

Opis:

An effective adsorption model was developed by S. Nir in 1978 for predicting adsorption to synthetic membranes and was also adapted by him afterwards to clay minerals. The main principles of the model are the solution of the electrostatic Gouy-Chapman equations while calculating the adsorbed amounts of the cations as the sum of those residing in the double-layer region and the cations that are chemically bound in a closed system. Thus, the equilibrium concentration in solution is influenced by the adsorption as the function of the amounts bound. The model was later developed and adapted for the adsorption of METAL cations, and, in most cases, the fit of calculated results to measured adsorbed amounts of cations was very good, after calibrating the model for the chemical tested, with only two adjustable parameters for each chemical. In the current work, we tested the applicability of this model for the adsorption of a monovalent and a divalent METAL cation by several soils, by considering the cation exchange capacities (CEC) and the specific surface areas (SSA) of the soils. For three out of four soils, a very good fit was obtained by using the required parameters for the calculations from previous studies of cation adsorption on clay minerals. The main advantage of the presented model over Langmuir and Freundlich adsorption isotherms is that no additional changes in the parameters were needed when the background concentration of salts in the suspensions was increased from 10 to 50 or 500 mM.

Źródło:

World News of Natural Sciences; 2020, 30, 2; 178-186
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Comparative research of organic components of emissions using compression ignition engine fuelled with diesel oil or rape seed methyl esters

Autorzy:

Rusin, M.

Powiązania:

https://bibliotekanauki.pl/articles/246049.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

Cl internal combustion engines
motor fuels
toxic exhaust emissions

Opis:

The results of comparative research of the organie components in the exhaust emissions of the CI engine fuelled with Diesel oil or rape seed methyl esters (RSME) were presented in this paper. The experimental works reported here was carriedout on the turbocharged, four cylinder, water cooled, CI engine, T 370 type (80 kW rated power at 2400 rpm, 400 Nm maximum torque at 1440 rpm, bore/stroke - 110/120 mm, displacement volume - 4560 cm3, compression ratio 17:1). The Signal equipment and AVL eeuipment were used for regulated exhaust emissions measurements and Hewlett Packard chromatograph type HP 5890 H for measurements of organic species emissions. The research was carried out under engine full load at maximum torque speed and at rated power speed. Using special equipment and normalized procedures the chromatographic test samples were collected. The 83 species were identified in HC emissions at these experiments but only the benzene, toluene and acetaldehyde were the components which were detected in substantial guantity. The research results show that the percentage emissions of individual components in total emissions of HC were weakly dependent on the used fuel. However in the case of RSME engine feed the HC emissions were lower than hose of the engine fuelled with Diesel oil and total emissions of their components were lower. Concluding, emissions from RSME combustion are less harmful than emissions of the engine fuelled with Diesel oil.

Źródło:

Journal of KONES; 2010, 17, 1; 351-358
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Characteristics and Household Toxic Hazardous Waste Generation Based on Economic Status and Topographic Regions in Semarang City, Indonesia

Autorzy:

Fikri, E.
Purwanto, P.
Sunoko, H. R.

Powiązania:

https://bibliotekanauki.pl/articles/124293.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

households toxic
hazardous waste
economic level
generation
topographic regions

Opis:

Hazardous and toxic waste are not only produced by industry, but also by households. But in fact, the household activities also produce Household Toxic and Hazardous Waste (HTHW). Considering the potential of the impact of HTHW to worsening environment quality, the effort of HTHW management must have been started well. One important aspect in the management strategy is to determine the characteristics and the HTHW generation. The method used to determine the characteristics HTHW refers to SNI 19–2454–2002, while the calculation of HTHW generation refers to the SNI 19–3694–1994 calculated based on weight and volume. Sampling was conducted in four districts of Semarang (Pedurungan, Semarang Barat, Semarang Utara and Banyumanik). The samples used in this study were 400 families that were selected based on the proportion of Slovin Formula. Data analysis performed using Analysis of Variance (ANOVA) and Kruskal-Walis test (α = 0.05). The largest characteristic of HTHW in Semarang City is infectious (79%), further Poisonous (13%), Combustible (6%) and Corrosive (2%). While HTHW generation is 0.01 kg/person/day (5.1% MSW). Statistical test result showed there was a significant difference (p-value : 0.001) between HTHW generation based on economic level, but there was no significant difference (p-value :0.442) between HTHW characteristics in Semarang city. The level of education, occupation, income level and lifestyle may become potential factors in differentiating the characteristics and HTHW generation in Semarang city.

Źródło:

Journal of Ecological Engineering; 2017, 18, 5; 8-17
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Toxic effect of distilled water on bacteria

Autorzy:

Koterska, B.
Bielecka, M.
Hnatkowska, M.
Derejska-Benedict, K.
Biedrzycka, E.

Powiązania:

https://bibliotekanauki.pl/articles/1371607.pdf

Data publikacji:

1993

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

distilled water
Escherichia coli
bacteria
water
toxic effect
survival

Źródło:

Polish Journal of Food and Nutrition Sciences; 1993, 02, 4; 93-98
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Lead and cadmium content in wheat grain from different regions of Poland and risk analysis

Autorzy:

Jędrzejczak, Renata
Ręczajska, Wiesława

Powiązania:

https://bibliotekanauki.pl/articles/2174347.pdf

Data publikacji:

2022

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

contamination
Polska
risk analysis
excessive content
toxic metals
wheat

Opis:

The level of wheat grain contamination with lead and cadmium was determined using electrothermal atomic absorption spectrometry with Zeeman background correction (ETAAS) after microwave digestion. The obtained limits of quantification were 0.001 mg∙kg-1, for both metals. A total of 300 samples of wheat grain from agricultural regions of Poland were examined, 150 each from the two consecutive harvest years 2017 and 2018. None of the tested samples exceeded the maximum level of these metals, as specified in the European regulations. The contents of lead and cadmium in wheat grain from both years of harvest ranged from <0.001 to 0.098 mg∙kg-1 and from 0.006 to 0.098 mg∙kg-1, respectively. Despite similar ranges of these metals, the highest lead contents were two times lower than the maximum limit value, while the highest cadmium contents were close to it. As for lead, a significantly higher (p < 0.05) mean content of this metal was found in wheat grain from the 2018 harvest compared to 2017 and in the western compared to eastern regions of the country. However, the cadmium contents did not differ significantly between the two harvest years, but were significantly higher (p < 0.05) in wheat grain from the southern regions compared to northern regions of Poland. Additionally, the highest contents of cadmium, close to the maximum limit, were found in the South-West region and in the both years of harvest. The risk analysis of the occurrence of the excessive contents of toxic metals in wheat grain showed a low risk level for lead in all investigated regions, and a medium level for cadmium, in general.

Źródło:

Journal of Water and Land Development; 2022, 55; 192--199
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

The Art of Women – form the Margin to the Mainstream
Sztuka kobieca – od marginesu do mainstreamu

Autorzy:

Samborska, Magdalena

Powiązania:

https://bibliotekanauki.pl/articles/593763.pdf

Data publikacji:

2014

Wydawca:

Łódzkie Towarzystwo Naukowe

Tematy:

feminism
postfeminism
herstory
Judy Chicago
feminine aesthetic
women’s art
Vanessa Beecroft
Toxic Tittes
feminizm
postfeminizm
estetyka kobieca
sztuka kobiet
Toxic Tittes.

Opis:

Confronting the second wave of feminism with postfeminism allows us to show the change in the perception of art and the position of women in the art world. The activists of the 1970s aroused extreme emotions in the public, and attempts were made to downplay the value of their work. At the end of the 20th century, however, when ambiguity and controversy have become the desired quality of art, feminist ideas are sometimes a necessary ornament of the careers of celebrities. In this article I present the history of the difficulties that artists who debuted on the art scene in the 1970s had to overcome. I use the example of Judy Chicago and her iconic work Dinner Party. Other heroines of the pioneering times are Marina Abramowic, Carolee Schneemann, and Valie Export, whose attitude I compare to that of the star of the younger generation, Vanessa Beecroft. Beecroft leaves her attractive installations without any comment, she does not settle any controversies, which fits the characteristics of the post-modern game on the art market.
Konfrontacja drugiej fali feminizmu z postfeminizmem pozwala ukazać zmianę w percepcji sztuki i pozycji kobiet w świecie sztuki. Aktywistki lat 70. budziły skrajne emocje odbiorców, próbowano bagatelizować wartość realizowanych przez nie prac. U schyłku XX wieku jednak, gdy pożądaną jakością sztuki stała się niejednoznaczność, kontrowersyjność, idee feminizmu stają się czasem niezbędną dekoracją dla karier celebrytek. W artykule przedstawiam historię trudności, jakie musiały pokonać artystki startujące na scenie sztuki w latach 70. Jako przykład występuje tu Judy Chicago i jej sztandarowa praca Dinner Party. Inne bohaterki pionierskich czasów to Marina Abramowic, Carolee Schneemann, Valie Export, których postawę porów-nuję z gwiazdą młodego pokolenia Vanessą Beecroft. Beecroft pozostawia swoje atrakcyjne instalacje bez komentarza, nie rozstrzyga kontrowersji, czym wpisuje się w znamienną dla postmodernizmu grę na rynku sztuki.

Źródło:

Art Inquiry. Recherches sur les arts; 2014, 16; 275-284
1641-9278

Pojawia się w:

Art Inquiry. Recherches sur les arts

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Badania stężeń związków szkodliwych spalin turbinowego silnika śmigłowego w ustalonych warunkach eksploatacyjnych
Emmision tests of the turboprop engine of steady operating conditions

Autorzy:

Merkisz, J.
Markowski, J.
Pielecha, J.
Mikutel, T.
Kozłowski, R.

Powiązania:

https://bibliotekanauki.pl/articles/222826.pdf

Data publikacji:

2013

Wydawca:

Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich

Tematy:

emisja
związki szkodliwe
turbinowy silnik śmigłowy
emissions
toxic compounds
turboprop engines

Opis:

W artykule przedstawiono wyniki badań emisji związków szkodliwych spalin silnika będącego źródłem napędu samolotu PZL M28 „Bryza”. Przeprowadzono je w warunkach próby silników na płycie lotniska. Następnie dokonano ich analizy, która pozwoliła na ocenę możliwości wykorzystania tego typu testów statycznych w pomiarach emisji związków toksycznych spalin z turbinowych silników śmigłowych.
The article presents the results of the exhaust gas emissions research of the aircraft PZL M28 ‘Bryza’ engine provided during the stationary engines test on the apron. The paper presents the results of the comparative analysis of achieved measurements. The analysis enables us to assess the method of the emissions measurement of the toxic gases contained in the exhaust gases of the turboprop engines.

Źródło:

Zeszyty Naukowe Akademii Marynarki Wojennej; 2013, R. 54 nr 1 (192), 1 (192); 89-96
0860-889X

Pojawia się w:

Zeszyty Naukowe Akademii Marynarki Wojennej

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Heavy Metal Content in Water of Resko Lake (North-West Poland)

Autorzy:

Daniszewski, P.
Konieczny, R.

Powiązania:

https://bibliotekanauki.pl/articles/412339.pdf

Data publikacji:

2013

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Toxic Heavy Metals
lake water
Lake of Resko (North-West Poland)

Opis:

The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Resko (North-West Poland). While the annual average concentration of Cadmium was calculated as 0.34 ppm in 2008 of the year and 0.28 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 1,75 ppm in 2008 of the year and 1.97 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface water. The observed annual average concentration of Copper in the water was 0.05 ppm in 2008 of the year and 0.06 ppm in 2009 of the year, which was below the permissible limit of 3.0 ppm set for inland surface water. While the annual average concentration of Mercury was calculated as 0.03 ppm in 2008 of the year and 0.04 ppm in 2009 of the year, which was very much above the maximum limit of 0.01 ppm set for inland surface water. The annual average concentration of Nickel in the water samples was observed to be 2.07 ppm in 2008 of the year and 2.09 ppm in 2009 of the year, which is close to the limit of 3.0 ppm set for inland surface water. The annual average concentration of Pb in the water samples was observed to be 0.07 ppm in 2008 of the year and 0.05 ppm in 2009 of the year, which is above the permissible limit of 0.1 ppm set for inland surface water. The results of the present investigation indicate that the annual average concentration of Zn in water samples was 3.02 ppm in 2008 of the year and 2.74 ppm in 2009 of the year, which is above the permissible limit of 5.0 ppm set for inland surface water.

Źródło:

International Letters of Chemistry, Physics and Astronomy; 2013, 8, 3; 279-287
2299-3843

Pojawia się w:

International Letters of Chemistry, Physics and Astronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Próba oceny możliwości zastosowania szkieł wodnych do usuwania metali ciężkich
An attempt to asses the potential of water glasses application to aluminum removal from media

Autorzy:

Koźlak, W.

Powiązania:

https://bibliotekanauki.pl/articles/272214.pdf

Data publikacji:

2008

Wydawca:

Górnośląska Wyższa Szkoła Pedagogiczna im. Kardynała Augusta Hlonda

Tematy:

szkło wodne
metale ciężkie
środowisko
water glass
toxic aluminium ions
environment

Opis:

Metodą turbidymetryczną, polegającą na otrzymywaniu rozpuszczalnego koloidalnego krzemianu glinu, badano układy zawierające szkło wodne sodowe produkcji szwedzkiej oraz wybrane sole glinu. Z przebiegu krzywych zmętnienia wynika, że w wielu przypadkach krzemian glinu powstaje natychmiast w czasie t = 0 tj. w początkowej fazie pomiaru i w zasadzie nie ma dalszego przyrostu zmętnienia w czasie. Wykazano, że na powstanie krzemianu glinu ma również wpływ rodzaj anionu badanej soli. Względne rozmiary cząsteczek krzemianu glinu i ich średnie promienie są podobne co świadczy, że jony Al1+ reagują z tym samym rodzajem anionów krzemianowych. Stwierdzono, że szkła wodne sodowe mogą być wykorzystane do usuwania toksycznych jonów glinu z mediów.
Systems including Swedish-made sodium water glass and selected aluminum salts were tested using turbimetric method consisting in producing soluble colloidal aluminum silica. The course of the turbidity curves indicates that aluminum silicate is produced instantly in time = 0 i.e. at the initial phase of the measurement and practically no further increase of turbidity in time is observed. It has been proved that the anion type of a selected salt impacts the production of the aluminum silicate. A relative size of the aluminum silicate particles and their average radiuses are similar which proves that Al3+ ions react with the same type of silica anions. It has been stated that sodium water glasses may be used for removal of toxic aluminum ions from media.

Źródło:

Problemy Ekologii; 2008, R. 12, nr 4, 4; 215-221
1427-3381

Pojawia się w:

Problemy Ekologii

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Determination of 13 toxic and physiological elements in herbs originating from China by ICPMS

Autorzy:

Koko, E.
Sajnog, A.
Baralkiewicz, D.

Powiązania:

https://bibliotekanauki.pl/articles/1192570.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Tematy:

herbs
Chinese plants
toxic elements
metrology
ICPMS
procedure development
validation
PCA

Opis:

The aim of the study was to develop an analytical procedure for determining 13 elements in 40 herbs and mixtures of herbs of Chinese origin by the ICPMS method after acidic digestion of samples. The correctness of the analytical procedure was verified by estimating the validation parameters. The traceability of a measurement result was established by the certified reference materials: Mixed Polish Herbs (INCT-MPH-2) Apple Leaves (1515 NIST) and Spinach Leaves (1570a NIST). Appropriate optimization has determined the sensitivity of determinations, precision, detection limits. The limits of detection were in the range 0.015-15 mg kg-1 for Co and Mg respectively, the precision was in the range 1% - 48% for Ba and Se, respectively, and the recoveries were in the range 69% - 101% for Ni and Mn, respectively. The determined content (mg kg-1) of elements in all samples was in the ranges: Mg (288-5755), V (<0.031-2.4), Mn (8.1-2095), Co (0.020-1.36), Ni (<1.1-6.9), Cu (<0.55-24), Zn (3.2-232), As (<0.096-1.4), Se (<0.15-0.85), Sr (1.1-277), Cd (<0.048-1.5), Ba (2.1-117) and Pb (<0.15-2.94). The content of As was higher than 0.25 mg kg-1 in 30% of the samples, the content of Cd was above the 0.2 mg kg-1 in 42.5% of the samples, and the content of Pb was above the value 0.3 mg kg-1 in 72.5% of the herbs. This means that the toxic elements were present in significant amounts able to cause toxic effects in the human body. Principal component analysis allowed us to distinguish 3 groups in which elements are well correlated: (i) V, As and Mg , (ii) Mn, Zn and Pb and (iii) Ni, Co and Cu.

Źródło:

Journal of Elementology; 2020, 25, 4; 1349-1362
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 34.

Tytuł:

Influence of lead on growth and nutrient accumulation in Black gram (Vigna mungo L.)

Autorzy:

Ravikumar, S.
Thamizhiniyzn, P.

Powiązania:

https://bibliotekanauki.pl/articles/11034.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

lead
toxic effect
plant growth
nutrient accumulation
black gram
Vigna mungo

Opis:

This study was conducted to investigate toxic effects of Pb on growth and nutrient uptake in Black gram. Black gram was subjected to seven (5, 10, 25, 50, 75, 100 & 200 kg-1) levels of lead. Due to Pb toxicity, plant growth was adversely affected and relatively a severe reduction in root biomass was recorded. The Pb accumulation increased with the increase in lead concentrations. The uptake of different nutrients, i.e., N, P, K, Ca and Mg was reduced in black gram due to the lead treatment.

Źródło:

International Letters of Natural Sciences; 2014, 16
2300-9675

Pojawia się w:

International Letters of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Sulphur hexafluoride as a high-voltage insulation - selected problems

Autorzy:

Opydo, W.
Juszczyk, Z.
Stawicki, J.
Opydo-Szymaczek, J.

Powiązania:

https://bibliotekanauki.pl/articles/97179.pdf

Data publikacji:

2014

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

high-voltage insulation
electric strength
sulphur hexafluoride (SF6)
toxic byproducts

Opis:

The paper presents some selected properties of sulphur hexafluoride (SF₆) a medium used for high-voltage insulation and electric arc suppression purposes. The results are presented of the studies aimed at determining the effect of the electrode material type, temperature, gas density and interelectrode gap on the SF₆ electric strength. The considered systems had both flat electrodes or one flat and the other (cathode) having the form of a rod of 3 mm or 30 mm diameter, ended with a hemisphere. The electrodes have been made of stainless steel or aluminum. The results were mathematically processed with the use of the Statistica [11] computer software. It was found that SF₆ temperature changes in the range from 243 K to 293 K with constant SF6 density did not cause variation of electric strength of the gas. Moreover, the effect of the electrode material type on electric strength of SF₆ was observed only in the systems distinguished by macroscopic uniformity of the electric field and in case of the gas density exceeding 15 kg/m³, corresponding to SF₆ pressure amounting about to 2.5-10⁵ Pa in the temperature 293 K. Physical interpretation of the study results is proposed and formulated. Additionally, the paper discusses the hazards arising from the use of SF₆ for the health of the persons operating the equipment and for the environment.

Źródło:

Computer Applications in Electrical Engineering; 2014, 12; 206-216
1508-4248

Pojawia się w:

Computer Applications in Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

A scoping survey of attitudes towards occupational exposure limits and REACH derived no effect levels for workers among chemical risk managers at Swedish workplaces

Autorzy:

Schenk, Linda

Powiązania:

https://bibliotekanauki.pl/articles/2116556.pdf

Data publikacji:

2020-09-17

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

occupational health
chemicals
legislation
MAC
toxic industrial agents
chemical risk management

Opis:

ObjectivesSetting and implementing occupational exposure limits (OELs) is one of the measures taken to protect workers from adverse effects of hazardous chemicals. The EU Regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) introduced an additional kind of exposure guidance values for workers; namely, the derived no effect level (DNEL) for workers’ inhalation exposure (worker DNEL). About 500 substances have a Swedish OEL, while roughly 5000 substances have a worker DNEL derived by REACH registrants. This work aims to investigate how the Swedish OELs and worker DNELs are perceived at Swedish workplaces, and whether worker DNELs are considered a possible alternative to OELs when the latter are lacking.Material and MethodsAn online questionnaire was designed and sent to Swedish companies identified through the European Chemicals Agency’s database of registered substances (N = 126) and the Swedish Chemicals Agency’s registry of companies that import or manufacture notifiable chemical products (N = 227). The response rates were 52% and 38%, respectively.ResultsThe respondents stated that they were using the Swedish OELs and most of them considered these to be a suitable risk management tool. As about one-third of the respondents expressed that they had some experience in using substances without the Swedish OELs, there are certain data gaps that worker DNELs may fill. One-third of the respondents familiar with worker DNELs stated that they would consider using worker DNELs for substances without the Swedish OELs. However, nearly half of the respondents reported to be unfamiliar with worker DNELs.ConclusionsPoor familiarity with DNELs may pose an obstacle to properly recognizing DNELs’ potential as well as the possible limitations of individual DNELs. There is a need for education about DNELs, as well as for tools facilitating the evaluation of DNELs and OELs from other sources in cases where the applicable Swedish OEL is lacking.

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2020, 33, 5; 611-620
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:

More insight into the concept of iron plaque formation and its characteristics in rice (Oryza sativa L.)

Autorzy:

Zandi, Peiman
Puła, Joanna
Xia, Xing
Bloem, Elke
Darma, Aminu
Wang, Yaosheng
Turisová, Ingrid
Li, Qian
Ngoc Sinh, Luu
Li, Na

Powiązania:

https://bibliotekanauki.pl/articles/2173114.pdf

Data publikacji:

2021-11-19

Wydawca:

Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie

Tematy:

iron oxide plaque
toxic metals immobilisation
radial oxygen loss
paddy fields

Opis:

Trwały i bioakumulacyjny charakter toksycznych metali(oidów) (TM) jest głównym problemem związanym z ich obecnością w środowisku. Skażenie TM w glebie i osadach zwiększa potencjalne ryzyko utraty zdrowia człowieka, przez narażenie na skażenie łańcucha pokarmowego. Odkładanie płytki tlenku żelaza na korzeniach hydrofitowych (np. ryżu) jest wynikiem różnych czynników biotycznych i abiotycznych. Promieniowa utrata tlenu (ROL) odgrywa kluczową rolę w utlenianiu żelaza w ryzosferze, a następnie wytrącaniu nisko- lub wysoko krystalicznych i/lub amorficznych minerałów żelaza na powierzchni korzeni. Biorąc pod uwagę, że każdy gatunek rośliny ma unikalną zdolność tworzenia utlenionej ryzosfery w warunkach beztlenowych gleby, obecność żelaza w ryzosferze ma ogromne znaczenie. Grupy funkcyjne (-OH) i specyficzne powierzchnie reagujące w blaszkach żelaza mają wysokie powinowactwo do adsorpcji różnych metali śladowych (toksycznych/nietoksycznych), wpływając na ich wchłanianie i akumulację w roślinach. W akumulacji różnych pierwiastków ważną rolę odgrywają płytki żelaza (IP). Gatunki roślin o niskim IP na swoich korzeniach mogą lepiej akumulować metale ciężkie, niezależnie od tego, czy IP jest barierą, czy buforem. Rośliny jadalne o wysokim IP są lepszymi fito-remediatorami potencjalnie fitotoksycznych metali(oidów) i mogą być bezpieczniejsze do spożywania przez ludzi. Niniejszy przegląd podsumowuje obecną wiedze dotyczącą czynników związanych z tworzeniem i funkcjami płytki żelaza w zarządzaniu transportem metali w systemie korzeniowym.
Trwały i bioakumulacyjny charakter toksycznych metali(oidów) (TM) jest głównym problemem związanym z ich obecnością w środowisku. Skażenie TM w glebie i osadach zwiększa potencjalne ryzyko zanieczyszczenia i zagraża zdrowiu człowieka przez narażenie na skażenie łańcucha pokarmowego. Odkładanie się płytki tlenku żelaza na korzeniach hydrofitowych (np. ryżu) jest wynikiem różnych czynników biotycznych i abiotycznych. Promieniowa utrata tlenu (ROL) odgrywa kluczową rolę w utlenianiu żelaza w ryzosferze, a następnie wytrącaniu nisko- lub wysoko krystalicznych i/lub amorficznych minerałów żelaza na powierzchni korzeni. Biorąc pod uwagę, że każdy gatunek rośliny ma unikalną zdolność tworzenia utlenionej ryzosfery w warunkach beztlenowych gleby, obecność żelaza w ryzosferze ma ogromne znaczenie. Grupy funkcyjne (-OH) i specyficzne powierzchnie reagujące w blaszkach żelaza mają wysokie powinowactwo do adsorpcji różnych metali śladowych (toksycznych/nietoksycznych), wpływając na ich wchłanianie i akumulację w roślinach. W akumulacji różnych pierwiastków ważną rolę odgrywają płytki żelaza (IP). Gatunki roślin o niskim IP na swoich korzeniach mogą lepiej akumulować metale ciężkie, niezależnie od tego, czy IP jest barierą czy buforem. Rośliny jadalne o wysokim IP są lepszymi fitoremediatorami potencjalnie fitotoksycznych metali(oidów) i mogą być bezpieczniejsze do spożywania przez ludzi. Niniejszy przegląd podsumowuje obecne zrozumienie czynników związanych z tworzeniem się i funkcjami płytki żelaza w zarządzaniu transportem metali w systemie korzeniowym.

Źródło:

Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2021, 6; 226-250
2543-8832
2545-0999

Pojawia się w:

Annales Universitatis Paedagogicae Cracoviensis Studia Naturae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Toxic YouTubers “hated” by Doctor Who? Animating multiphrenic incarnations of Not My Doctor anti-fandom

Autorzy:

Hills, Matt

Powiązania:

https://bibliotekanauki.pl/articles/2029234.pdf

Data publikacji:

2021-11-22

Wydawca:

Polskie Towarzystwo Ludoznawcze

Tematy:

fan studies
toxic fandom
anti-fandom
Doctor Who
Not My Doctor

Opis:

This article considers how popular/spreadable misogyny enters into Doctor Who fans’ discourse communities via fan-cultural appropriation, mixing external political and internal fan discourses. This can oppose fannish communal norms such as “convivial evaluation” and “ante-fandom”. The theoretical perspective taken in the article combines work on toxic fandom with anti-fandom to thus understand fan toxicity as “multiphrenic”, i.e. drawing on multiple discourses and self-investments, including responding to its own anti-fans. The article goes on to examine YouTube voiceover-commentary videos from one communally-prominent Whotuber representing Not My Doctor anti-fandom, showing how they use devices such as the acousmetre and “stripped down” subjectivity to open a projective space for toxic fandom and enact a flat affect characterising what is termed “performative rationality”. Crucially, leftwing narratives of toxicity and hate are completely inverted to the extent that Doctor Who and the BBC are presumed, without evidence, to “hate” straight white male conservative fandom.

Źródło:

Literatura Ludowa; 2021, 65, 2; 69-89
2544-2872
0024-4708

Pojawia się w:

Literatura Ludowa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Experimental tests on a dual fuel compression-ignition engine powered by biogas with a varying chemical composition

Autorzy:

Wierzbicki, S.
Śmieja, M.
Kozłowski, M.
Nieoczym, A.
Krzysiak, Z.

Powiązania:

https://bibliotekanauki.pl/articles/247546.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

biogas
dual fuel compression-ignition engine
emission of toxic compounds

Opis:

Biogas is among the fuels whose significance in the general energy balance will increase. These results from the fact that it may be produced from various kinds of waste materials, and it is therefore considered a renewable fuel of the second generation. Because of its properties, biogas may be used directly to power spark-ignition engines. Nonetheless, numerous tests are underway involving the possibility of using biogas to power compression-ignition engines. In order to use biogas, whose main combustible component is methane, in compression-ignition engines, it is necessary to use a dual fuel power supply system. With such a system supplying power to the engine, the gas and air mixture in the cylinder is ignited by a small dose of liquid fuel. This paper presents a fragment of the research on the use of biogas with a varying chemical composition for powering compression-ignition engines. The described tests were conducted using a one-cylinder compressionignition engine mounted on an engine test stand. The fuel gas consisted of a mixture of natural gas and carbon dioxide; the share of each individual component was regulated from the station, which controlled the operation of the whole test stand. The developed control system also enabled the adjustment of the operating parameters of the engine test stand and the parameters of the injection of liquid fuel, such as the injection pressure, the timing angle of injection and the size of the dose. The results presented in the paper show the impact of the individual control parameters of the engine on the value of the engine’s torque and the amount of toxic compounds in the exhaust fumes.

Źródło:

Journal of KONES; 2016, 23, 3; 549-554
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Potential hazards of toxic metals found in toothpastes commonly used in Nigeria

Autorzy:

Orisakwe, O.E.
Okolo, K.O.
Igweze, Z.N.
Ajaezi, G.C.
Udowelle, N.A.

Powiązania:

https://bibliotekanauki.pl/articles/877777.pdf

Data publikacji:

2016

Wydawca:

Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny

Tematy:

potential hazard
hazard
toxic metal
determination
toothpaste
health risk
Nigeria

Opis:

Background. Toothpastes have multi-functional configurations as oral care products. They can however constitute a possible source, amongst others, of toxic metal exposure in public health. Indeed, the public health impact of personal hygiene and consumer products is largely unknown. Objective. To determine the level of toxic metals (lead, cadmium, cobalt, chromium, nickel) in toothpastes available in Nigeria, (home produced and imported), and assess the potential risk to the people. Material and Method. The samples of toothpastes commonly used in Nigeria were tested. Using a market basket protocol thirty five different brands of toothpaste were used. Samples were digest by addition of 10 mL mixture of conc. nitric and hydrochloric acids (HCl:HNO3, 3:1), followed by heating to dryness. 20 mL deionized water was added, stirred and filtered. The filtrate was made up in standard volumetric flask and lead, cadmium, chromium, cobalt and nickel concentrations were determined using the atomic absorption spectrophotometry 205A. The daily intake of metals and target hazard quotient (THQ) were then calculated. Results. Pepsodent and Flodent had the highest levels of lead at respectively 23.575 and 18.092 mg/kg while Colgate Herbal had the highest nickel of 18.535 mg/kg. The daily intake estimates of all imported toothpaste samples were below the stated upper limits (UL). All target hazard quotients were also found to be below one. Conclusions. Although the UL, THQ and daily intake rates were all normal, the high levels of lead in some of the toothpastes an important concern to public health suggesting that pre-marketing safety studies of toothpastes may be worthwhile for the regulatory authorities.

Źródło:

Roczniki Państwowego Zakładu Higieny; 2016, 67, 2
0035-7715

Pojawia się w:

Roczniki Państwowego Zakładu Higieny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Analysis of operating conditions and emissions of the selected components of exhaust gas during SI engine braking phase

Autorzy:

Ubysz, A.
Łazarz, B.
Flekiewicz, M.

Powiązania:

https://bibliotekanauki.pl/articles/245339.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

toxic emissions
engine braking phase
catalytic converter
non-driving phases

Opis:

This paper presents analysis of conditions of CO2, CO, HC and NOX emissions during engine braking phase invehicles with 1.6 SI engine, based on the results of investigations by Professor Romaniszyn. The analysis aimed to determine the effect of cooling of catalytic converter and engine chamber on emissions of toxins and fuel efficiency in next driving phase. Based on own investigations, the synthesis of fuel consumption under three non-driving conditions of engine operation (i.e. continuous drive, engine braking and drive in neutral) is also presented. Current research centres often carry out extensive investigations of fuel efficiency and emissions of toxic compounds during real use of vehicles. Their results, due to previous assumptions or limitations in the scope of investigations, rarely provide an overall view of the problem. These attempts are typically made in scientific papers and dissertations [1-3]. Selective approach to the problem can be justified by the complexity and varied impact of each phase of engine 's operation on fuel consumption under unsteady heat conditions. Fuel consumption map in speed-acceleration coordinates for vehicle and engine, characteristics of CH emissions, parameters of engine braking phase and temperature characteristics of exhaust gases before catalytic converter are presented in the paper.

Źródło:

Journal of KONES; 2009, 16, 4; 469-476
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Substancje toksyczne występujące w ziemniaku
Toxic substances in potato plant

Autorzy:

Kluszczyńska, D.

Powiązania:

https://bibliotekanauki.pl/articles/228346.pdf

Data publikacji:

2009

Wydawca:

Wyższa Szkoła Menedżerska w Warszawie

Tematy:

ziemniaki
substancje toksyczne
występowanie
glikoalkaloidy steroidowe
potatos
toxic compounds
glycoallcaloids

Opis:

Celem pracy zaprezentowanej w artykule była charakterystyka substancji toksycznych występujących naturalnie w ziemniakach. Ziemniak oprócz wielu cennych składników pokarmowych zawiera w swoim składzie substancje o działaniu negatywnym, którymi są glikoalkaloidy steroidowe. Przedstawiono budowę tych związków, ich zawartość w roślinie, czynniki wpływające na ich ilość oraz działania niepożądane wywoływane przez nie.
Potato is rich of beneficial is animals and humans the ace well the ace potentially toxic compounds – glycoallcaloids, which at appropriate levels may baa toxic.

Źródło:

Postępy Techniki Przetwórstwa Spożywczego; 2009, 2; 98-102
0867-793X
2719-3691

Pojawia się w:

Postępy Techniki Przetwórstwa Spożywczego

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Obuwie chroniące przed substancjami chemicznymi i mikroorganizmami - prace nad projektem normy europejskiej
Footwear protecting against chemicals and micro-organisms—work on a draft European standard

Autorzy:

Andrzejewska, A.
Szczecińska, K.

Powiązania:

https://bibliotekanauki.pl/articles/179232.pdf

Data publikacji:

2003

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

obuwie ochronne
substancje szkodliwe
norma europejska
safety shoes
toxic substances
European standard

Opis:

Artykuł prezentuje podstawowe informacje na temat obuwia ochronnego stosowanego do prac z substancjami chemicznymi. W artykule przedstawiono również informacje na temat projektu badawczego realizowanego przez sześć europejskich instytucji badawczych, w tym Centralny Instytut Ochrony Pracy w ramach 5 Programu Ramowego UE polegającego na opracowaniu normy dla obuwia chroniącego przed substancjami chemicznymi i mikroorganizmami. W wyniku realizacji prac badawczych opracowany został projekt normy europejskiej, który zostanie złożony w Komitecie Technicznym CEN/TC 161 do ustanowienia.
This article presents basic information on protective footwear used by workers exposed to chemicals. It also presents general information concerning a project realized within the 5th Framework Programme of the EU, the aim of which is to work out a standard for footwear protecting against chemicals and micro-organisms. This research has resulted in a draft European standard, which will be submitted to the CEN/TC 161 Technical Committee for acceptance.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2003, 9; 10-11
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Comparison of unburnt hydrocarbon emissions for diesel engines fueled by diesel oil and rapeseed fuel

Autorzy:

Rusin, M.

Powiązania:

https://bibliotekanauki.pl/articles/245894.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

transport
CI internal combustion engines
motor fuels
alternative fuels
toxic exhaust emissions

Opis:

The article presents the results of the of the HC emissions composition for the compression ignition - diesel engine fuelled with rapeseed fuel (a mixture of methyl esters of fatty acids - RSME). The investigations were conducted on a turbocharged, four-cylinder compression-ignition engine type T370 (of 80 hW power at 2400 rpm engine speed and maximum torque of 400 Nm at 1440 rpm engine speed, with bore/stroke 110 mm /l20 mm, displacement volume 4560 cm3, compression ratio 17). For the exhaust toxicity investigations the eauipment of Signal and AVL companies was used, and for composition of nonregulated hydrocarbons emissions investigations the Hewlett Packard Company chromatograph type HP-5890II was used. The investigations were conducted under engine full load at maximum torque speed and for engine rotational speed of the rated power. Chromatographic test for emissions were collected using special equipment and special procedures. The article presents the results of chromatographic investigations focusedon: benzene, toluene and acetaldehyde. It was found that the percentage of emission of individual components in the total emissions of HC was independent of the fuel used. However, due to the fact that in the case of rape fuel, emission of unburned HC was smaller and smaller were the absolute amounts of emissions components. Thus, emissions from combustion of rape fuel are less harmful than emissions from the engine fuelled with diesel oil.

Źródło:

Journal of KONES; 2009, 16, 4; 549-555
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Preliminary evaluation of maternotoxic effect of Ascaris alpha-chymotrypsin inhibitor in mice
WSTĘPNA OCENA TOKSYCZNEGO DZIAŁANIA INHIBITORA о-СНУМОТВУРЗУМУ 7 ASCARIS NA ORGANIZM CIĘŻARNYCH MYSZY

Autorzy:

Blaszkowska, J.
Kadłubowski, R.

Powiązania:

https://bibliotekanauki.pl/articles/2148308.pdf

Data publikacji:

2001

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

parasite
pregnancy
mouse
mice
Ascaris
host organism
toxic effect
alpha-chymotrypsin inhibitor

Opis:

Administration intraperitoneally of the Ascaris α-chymotrypsin inhibitor (40-300 mg/kg/day.) at a late stage of organogenesis (8-12 days of gestation) disturbed course of mouse pregnancy. The low doses of α-chymotrypsin inhibitor (40-80 mg/kg/day) significantly decreased the number of live fetuses per litter, increased the number of fetal resorptions. The symptoms of matemal toxicity that occurred after administration of the highest doses of the inhibitor (80-300 mg/kg/day) to pregnant mice included: decreased body weight gain as compared to control, vaginal hemorrhage, intrauterine resorption of litters, abortions, altered behaviour of animals immediately after injection and death. There is a linear interrelationship between the logarithm of the doses of the inhibitor and mortality of pregnant mice. The DL50 value of the inhibitor for female was 116 mg/kg /day (confidence interval: 95.5-140.0 mg/kg/day).

Źródło:

Wiadomości Parazytologiczne; 2001, 47, 4; 705-710
0043-5163

Pojawia się w:

Wiadomości Parazytologiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Adverse effects of antioxidative vitamins

Autorzy:

Rutkowski, Maciej
Grzegorczyk, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/2180105.pdf

Data publikacji:

2012-06-01

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

vitamins A
E and C
β-carotene
supplementation
side actions
toxic effects

Opis:

High doses of synthetic antioxidative vitamins: A, E, C and β-carotene are often used on long-term basis in numerous preventive and therapeutic medical applications. Instead of expected health effects, the use of those vitamins may however lead to cases of hypervitaminosis and even to intoxication. The article points out main principles of safety which are to be observed during supplementation with antioxidative vitamins. Toxic effects resulting from erroneous administration of high doses of those substances on organs and systems of the organism are also discussed. Attention is drawn to interactions of antioxidative vitamins with concomitantly used drugs, as well as intensification of adverse effects caused by various exogenous chemical factors. Moreover, the article presents the evaluation of supplementation with these vitamins, which was performed in large studies.

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2012, 25, 2; 105-121
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Social Pedagogy and Selected Aspects of the Primary Prevention of Drug Addictions under the Slovak Republic Elementary School Conditions

Autorzy:

Emmerova, Ingrid

Powiązania:

https://bibliotekanauki.pl/articles/52157911.pdf

Data publikacji:

2004-06-30

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

social pedagogy
toxic-manic disorder
drug addiction prevention
prevention programmes
prevention coordinator

Opis:

The study deals with the task of a social pedagogue in the prevention of drug addiction in elementary schools as well as with selected aspects of the primary prevention in the Slovak Republic. The author also points to the tasks of the coordinator of drug addiction as well as other pathological phenomena, and she also pays attention to the aspects of free time in the drug addiction prevention in elementary schools.

Źródło:

The New Educational Review; 2004, 3; 75-85
1732-6729

Pojawia się w:

The New Educational Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Toxic heavy metals in the Mahul Creek water of Mumbai, India

Autorzy:

Singare, P.U.
Ansari, M.V.A.
Dixit, N.N.

Powiązania:

https://bibliotekanauki.pl/articles/11858.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

toxic metal
heavy metal
Mahul Creek
creek water
industrial effluent
India

Opis:

The present study was performed for the period of one year from January 2013 to December 2013 in order to understand the level of toxic heavy metals in the water of Mahul Creek near Mumbai. It was observed that the annual average concentration of heavy metals like Cd, As, Hg, Cr, Pb, Cu, Ni and Zn, was found to be 0.003, 0.004, 0.0009, 0.012, 0.015, 0.019, 0.04 and 0.23 ppm respectively. The results suggest that there is a need to have such scientific monitoring for longer time period in order to understand the trend in level of these toxic heavy metals discharged in to the creek water. It is feared that the existing problem if ignored may increase the level of this heavy metals in creek water thereby creating threat to the biological life of an aquatic ecosystem. From the results of the present investigation it seems that the time has come to move towards ecosystem specific discharge standards to maintain the health and productivity of natural resources on which the majority of Indians are dependent.

Źródło:

International Letters of Natural Sciences; 2014, 10
2300-9675

Pojawia się w:

International Letters of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Aluminum Powder Infuence on ANFO Detonation Parameters

Autorzy:

Maranda, A.
Paszula, J.
Zawadzka-Małota, I.
Kuczyńska, B.
Witkowski, W.
Nikolczuk, K.
Wilk, Z.

Powiązania:

https://bibliotekanauki.pl/articles/358453.pdf

Data publikacji:

2011

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

ANFO
aluminum powder
detonation parameters
blast wave
toxic products of explosion

Opis:

Nowadays, ammonium nitrate-fuel oil (ANFO) is the most often used explosive in mining industry. Its advantages are: simple production, low price and practically lack of sensitivity to mechanical impacts during mechanical loading to shot-holes. ANFO has also some disadvantages: lack of waterproofness and low detonation parameters which reduce their range of use to dry blasting holes in low compactness rock masses. This paper presents the results of measurements of detonation parameters for aluminized ANFO with different amount of metallic powder. The experiment included application of faked aluminum into granulated ammonium nitrate(V) (type "Extra" - YARA company) with an addition of oil FLEX 401. Positive effects of aluminum powder content on the decrease of concentration of toxic gases in detonation products, and on the blast wave performance and the work ability of ANFO/Al are also discussed.

Źródło:

Central European Journal of Energetic Materials; 2011, 8, 4; 279-292
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Analysis concerning possibilities of reduction of toxic substances and co2 emission by use of dual fuel diesel engines for seagoing ships main propulsion

Autorzy:

Giernalczyk, M.
Górski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/244704.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

toxic substances
carbon dioxide
fuel consumption
dual fuel engines
natural gas

Opis:

The goal of the paper is to focus the problem of emission of toxic compounds e.g. NOx, SOx and CO2 from seagoing ships to environment. The VI Amendment to Marpol Convention concerning prevention against air pollution by seagoing ships brought into practice in May 19th 2005 forced ship owners to use means for reduction of environment harmful substances emission to atmosphere. Considerable reduction of these harmful substances can be use dual fuel diesel engines for ship propulsion. Dual fuel engines are fuelled by natural gas having methane as main component. Leading producers of marine diesel engines introduced into production diesel engines DF (Dual Fuel) type. These engines can be fuelled alternatively with natural gas or with heavy fuel oil and marine diesel oil. Today the propulsion by diesel engines fuelled with natural gas is the most popular on ships carrying natural gas cargo i.e. LNG carriers (Liquefied Natural Gas Carriers). Natural gas is freight in liquid form under atmospheric pressure in temperature -163 °C. Due to heat penetration into cargo tanks, the liquefied gas evaporates. Evaporated cargo BOF (Boil Off Gas) is used as a fuel in ship diesel engines. However, dual fuel engines are used on other types of ships not only on LNG carriers. A number of seagoing ships fuelled with natural gas are now under construction. For example container ship 9,000 TEU in Japan shipyard Kawasaki Heavy Industries or container ship 14,000 TEU in Korean shipyard Daewoo Shipbuilding & Marine Engineering for company CMA-CGM. Ships fuelled with natural gas e.g. modern ferries are also built by Stocznia Remontowa Shipbuilding in Poland for Norwegian owner. Adaptation of presently operated ships for fuelling with natural gas is also considered.

Źródło:

Journal of KONES; 2014, 21, 2; 77-82
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

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