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Tytuł:
Deteriorations of pulmonary function, elevated carbon monoxide levels and increased oxidative stress amongst water-pipe smokers
Autorzy:
Yalcin, Funda K.
Er, Mukremin
Hasanoglu, H. Canan
Kilic, Hatice
Senturk, Aysegul
Karalezli, Aysegul
Ergin, Merve
Erel, Ozcan
Powiązania:
https://bibliotekanauki.pl/articles/2161884.pdf
Data publikacji:
2017-07-14
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
Oxidative stress
carbon monoxide
cigarette smoking
pulmonary function tests
antioxidant status
water-pipe smoking
Opis:
Objectives A water pipe (hookah) is a tobacco smoking tool which is thought to be more harmless than a cigarette, and there are no adequate studies about its hazards to health. Water-pipe smoking is threatening health of the youth in the world today. The objective of this study has been to investigate the carbon monoxide (CO) levels in breath, examine the changes in pulmonary function tests (PFT) and to assess the change of the oxidative stress parameters in blood after smoking a water pipe. Material and Methods This study is a cross-sectional analytical study that has included 50 volunteers who smoke a water pipe and the control group of 50 volunteers who smoke neither a cigarette nor a water pipe. Carbon monoxide levels were measured in the breath and pulmonary function tests (PFTs) were performed before and after smoking a water pipe. Blood samples were taken from either the volunteer control group or water-pipe smokers group after smoking a water pipe for the purpose of evaluation of the parameters of oxidative stress. Results Carbon monoxide values were measured to be 8.08±7.4 ppm and 28.08±16.5 ppm before and after smoking a water pipe, respectively. This increment was found statistically significant. There were also significant reductions in PFTs after smoking a water pipe. Total oxidative status (TOS), total antioxidant status (TAS) and oxidative stress index (OSI) were found prominently higher after smoking a water pipe for the group of water-pipe smokers than for the control group. Conclusions This study has shown that water-pipe smoking leads to deterioration in pulmonary function and increases oxidative stress. To the best of our knowledge this study is the only one that has shown the effect of water-pipe smoking on oxidative stress. More studies must be planned to show the side effects of water-pipe habit and protective policies should be planned especially for young people in Europe. Int J Occup Med Environ Health 2017;30(5):731–742
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2017, 30, 5; 731-742
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Tribological and Mechanical Properties of Biodegradable AZ91 Alloy Produced by Cold Chamber High Pressure Casting Method
Autorzy:
Urtekin, Levent
Arslan, Recep
Bozkurt, Fatih
Er, Ümit
Powiązania:
https://bibliotekanauki.pl/articles/2049430.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
die casting
AZ91 magnesium alloy
cold chamber high pressure casting method
mechanical properties of AZ91 magnesium alloy
wear of AZ91 alloy
tribological properties of AZ91 alloy
Opis:
In this study, AZ91 Magnesium alloy is produced by cold chamber high pressure die casting (HPDC) method. Different combinations of the cold chamber HPDC process parameters were selected as; in-mold pressure values of 1000 bar and 1200 bar, the gate speed of 30 m/s and 45 m/s, the casting temperatures of 640°C and 680°C. In addition, the test samples were produced by conventional casting method. Tensile test, hardness test, dry sliding wear test and microstructure analysis of samples were performed. The mechanical properties of the samples produced by the cold chamber HPDC and the conventional casting method were compared. Using these parameters; the casting temperature 680°C, in-mold pressure 1000 bar and the gate speed 30 m/s, the highest tensile strength and the hardness value were obtained. Since the cooling rate in the conventional casting method is slower than that of the cold chamber HPDC method, high mechanical properties are obtained by the formation of a fine-grained structure in the cold chamber HPDC method. In dry sliding wear tests, it was observed that there was a decrease in friction coefficient and less material loss with the increase of hardness values of the sample produced by the cold chamber HPDC method.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 1; 205-216
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Health and Safety Perception of Workers in Turkey: A Survey of Construction Sites
Autorzy:
Ulubeyli, S.
Kazaz, A.
Er, B.
Powiązania:
https://bibliotekanauki.pl/articles/90956.pdf
Data publikacji:
2014
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
construction labor
worker health
occupational safety
survey
Turkey
praca
zdrowie pracownika
bezpieczeństwo pracy
Turcja
Opis:
This study reports the general health and safety (HS) conditions in the Turkish construction industry from the perspective of construction labor. Toward this aim, a questionnaire survey was carried out with 800 workers employed in 32 construction projects in Turkey. Contractors were found to neglect their legal liabilities in paying workers’ insurance premiums. Also, they overlooked safety training and were reluctant to hiring physicians at construction sites and investing in personal protective equipment (PPE). As the real constructors of projects, workers did not attach adequate importance to occupational training. In addition, they were not willing to use some PPE. Key participants of HS affairs such as workers, contractors, unions, and government should comprehend their drawbacks to overcome the current dangerous view of the industry. In this regard, related government bodies should compel contractors and workers to adapt to the relatively new regulations on occupational HS.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2014, 20, 2; 323-338
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of dietary supplementation with alfalfa protein-xanthophyll concentrate (PX) on ewe milk performance
Wpływ stosowania koncentratu białkowo-ksantofilowego z lucerny (PX) w żywieniu owiec matek na ich mleczność i wzrost potomstwa
Autorzy:
Szymanowska, A.
Patkowski, K.
Gruszecki, T.M.
Szymanowski, M.
Grela, E.R.
Miroslaw, M.
Powiązania:
https://bibliotekanauki.pl/articles/843984.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Zootechniczne
Źródło:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego; 2015, 11, 4
1733-7305
Pojawia się w:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new method for automatic determining of the DBSCAN parameters
Autorzy:
Starczewski, Artur
Goetzen, Piotr
Er, Meng Joo
Powiązania:
https://bibliotekanauki.pl/articles/1837535.pdf
Data publikacji:
2020
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
clustering algorithms
DBSCAN
data mining
Opis:
Clustering is an attractive technique used in many fields in order to deal with large scale data. Many clustering algorithms have been proposed so far. The most popular algorithms include density-based approaches. These kinds of algorithms can identify clusters of arbitrary shapes in datasets. The most common of them is the Density-Based Spatial Clustering of Applications with Noise (DBSCAN). The original DBSCAN algorithm has been widely applied in various applications and has many different modifications. However, there is a fundamental issue of the right choice of its two input parameters, i.e the eps radius and the MinPts density threshold. The choice of these parameters is especially difficult when the density variation within clusters is significant. In this paper, a new method that determines the right values of the parameters for different kinds of clusters is proposed. This method uses detection of sharp distance increases generated by a function which computes a distance between each element of a dataset and its k-th nearest neighbor. Experimental results have been obtained for several different datasets and they confirm a very good performance of the newly proposed method.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2020, 10, 3; 209-221
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electron Paramagnetic Resonance Study of Se-Doped AlSb: Evidence for Negative-U of the DX Center
Autorzy:
Stallinga, P.
Walukiewicz, W.
Weber, E.R.
Becla, P.
Lagowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1943839.pdf
Data publikacji:
1995-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Eq
76.30.Da
Opis:
A metastable electron paramagnetic resonance signal is observed in Se doped AlSb. After illumination a strong, persistent electron paramagnetic resonance signal with an isotropic g-factor of 1.949 is observed. The absence of any electron paramagnetic resonance when cooled in the dark is direct evidence for the negative-U model. The electron paramagnetic resonance arises from the effective-mass state of the defect, which is not filled at thermal equilibrium. An analysis of the lineshape reveals that the linewidth is determined by hyperfine interactions. The extend of the wave function is found to be comparable to the prediction for the effective-mass state.
Źródło:
Acta Physica Polonica A; 1995, 88, 5; 1043-1047
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of inulin extraction method and level in growing-finishing pig diets on performance, carcass traits and nutrients digestibility
Wpływ metody ekstrakcji i poziomu inuliny w mieszankach dla tuczników na efekty produkcyjne, wartość rzeźną tusz oraz strawność składników pokarmowych
Autorzy:
Sobolewska, S.
Grela, E.R.
Powiązania:
https://bibliotekanauki.pl/articles/2196913.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
inulin
extraction method
diet supplementation
animal diet
growing-finishing pig
pig
growth performance
carcass trait
nutrient digestibility
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica; 2013, 31, 2; 56-64
0239-4243
2083-7399
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The oldest and youngest records of afrosoricid placentals from the Fayum Depression of northern Egypt
Autorzy:
Seiffert, E.R.
Powiązania:
https://bibliotekanauki.pl/articles/20820.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
oldest record
youngest record
Mammalia
Adapisoriculidae
Tenrecidae
Garatherium
Widanelfarasia
Eocene
Oligocene
Faiyum Oasis
Egypt
Opis:
Tenrecs (Tenrecoidea) and golden moles(Chrysochloroidea) are among the most enigmatic mammals alive today. Molecular data strongly support their inclusion in the morphologically diverse clade Afrotheria, and suggest that the two lineages split near the K−T boundary, but the only undoubted fossil representatives of each superfamily are from early Miocene (~20 Ma) deposits in East Africa. A recent analysis of partial mandibles and maxillae of Eochrysochloris, Jawharia, and Widanelfarasia, from the latest Eocene and earliest Oligocene of Egypt, led to the suggestion that the derived “zalambdomorph” molar occlusal pattern (i.e., extreme reduction or loss of upper molar metacones and lower molar talonids) seen in tenrecoids and chrysochloroids evolved independently in the two lineages, and that tenrecoids might be derived from a dilambdomorph group of “insectivoran−grade” placentals that includes forms such as Widanelfarasia. Here I describe the oldest afrosoricid from the Fayum region, ~37 Ma Dilambdogale gheerbranti gen. et sp. nov., and the youngest, ~30 Ma Qatranilestes oligocaenus gen. et sp. nov. Dilambdogale is the most generalized of the Fayum afrosoricids, exhibiting relatively broad and well−developed molar talonids and a dilambdomorph arrangement of the buccal crests on the upper molars, whereas Qatranilestesis the most derived in showing relatively extreme reduction of molar talonids. These occurrences are consistent with a scenario in which features of the zalambdomorph occlusal complex were acquired independently and gradually through the later Paleogene. Phylogenetic analysis places Dilambdogale and Widanelfarasia as sister taxa to the exclusion of crown afrosoricids, but derived features that these taxa share with early Miocene Protenrec hint at the possibility that both taxa might be stem tenrecoids. Late Paleocene Todralestes and Afrodon from Morocco are similarly placed as stem afrosoricids, indicating that African adapisoriculids (including Garatherium) might also be relevant to the origin of the tenrecoid and chrysochloroid clades.
Źródło:
Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of inulin extracts and inulin-containing plants on haematobiochemical responses, plasma mineral concentrations, and carcass traits in growing-finishing pigs
Autorzy:
Samolinska, W.
Grela, E.R.
Kiczorowska, B.
Powiązania:
https://bibliotekanauki.pl/articles/16117.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:
Journal of Elementology; 2019, 24, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of degradation modes and their effects on reliability of photovoltaic modules after 12 years of field operation in the steppe region
Autorzy:
Saadsaoud, M.
Ahmed, A.
Er, Z.
Rouabah, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1054959.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
88.40.-J
88.40.H-
88.40.FF
Opis:
This paper presents an evaluation of the performance degradation of photovoltaic modules after twelve operation years in a steppe region environment in Algeria. The objective is to understand the different degradation modes of the photovoltaic modules and associated factors and their impact on the electrical properties (V_{oc}, I_{sc}, V_{max}, I_{max}, P_{max} and FF) using the degradation tests of IEC 61215 qualification standard and the electroluminescence test. The experimental results show that yearly degradation rates of the maximum power output P_{max} present the highest possible loss, ranging from 2.08% to 5.2%. Additionally, the results show that the short-circuit current I_{sc} comes second with yearly degradation rates spanning from 2.75% to 2.84%. Finally the open-circuit voltage V_{oc} is the least affected, with yearly degradation occurring from 0.01% to 4.25%.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 930-935
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tensile strength and relaxation of tomato skin by a loop technique
Autorzy:
Rajabipour, A.
Zariefard, M.R.
Dodd, G.T.
Norris, E.R.
Powiązania:
https://bibliotekanauki.pl/articles/26629.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
relaxation
skin cracking
loop technique
tomato skin
tensile strength
fruit cracking
Źródło:
International Agrophysics; 2004, 18, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of protein-xanthophyll concentrate of alfalfa on growth performance and carcass value of growing-finishing pigs
Wpływ dodatku koncentratu białkowo-ksantofilowego z lucerny na efekty produkcyjne i wartość rzeźną tusz tuczników
Autorzy:
Pietrzak, K.
Grela, E.R.
Powiązania:
https://bibliotekanauki.pl/articles/2196927.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
protein-xanthophyll concentrate
alfalfa
Medicago sativa
protein content
growth performance
carcass value
growing-finishing pig
slaughter trait
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica; 2013, 31, 3; 10-17
0239-4243
2083-7399
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ dodatku preparatu białkowego z lucerny (APC) w mieszankach dla loch i prosiąt na strawność podstawowych składników pokarmowych i frakcji włókna detergentowego
The effect of alfalfa protein concentrate (APC) addition in mixtures for sows and piglets on the total tract digestibility of the basic nutrients and detergent fiber fractions
Autorzy:
Pietrzak, K.
Grela, E.R.
Powiązania:
https://bibliotekanauki.pl/articles/2196815.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
lucerna
preparaty bialkowe
preparat bialkowy z lucerny
dodatki paszowe
mieszanki paszowe
skladniki pokarmowe
wlokno detergentowe
strawnosc
zywienie zwierzat
lochy
prosieta
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica; 2015, 33, 1; 17-25
0239-4243
2083-7399
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Suidae and Sanitheriidae from Wadi Moghra, Early Miocene, Egypt
Autorzy:
Pickford, M.
Miller, E.R.
El-Barkooky, A.N.
Powiązania:
https://bibliotekanauki.pl/articles/20171.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Suidae
Sanitheriidae
Wadi Moghra
Early Miocene
Miocene
Egypt
paleontology
Mammalia
biochronology
Africa
paleoenvironment condition
Opis:
New suid and sanithere material from Wadi Moghra, early Miocene, Egypt, is described and discussed. The new material greatly improves the sample size and diversity of suoids known from North Africa, and includes one species of Sanitheriidae and three species of Kubanochoerinae. The Moghra suoid assemblage most closely resembles that from Gebel Zelten, Libya, suggesting that at least part of the Moghra deposits may overlap in time with part of Zelten, i.e., is equivalent in age to MN 4–5 of the European mammal zonation, or PIII of the East African one. Information from suids and sanitheres is consistent with previous interpretations, that the Moghra deposits were formed under swampy and littoral paleoenvironmental conditions.
Źródło:
Acta Palaeontologica Polonica; 2010, 55, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MON wciąż do wzięcia.
Autorzy:
Pastusiak, Longin.
Powiązania:
Trybuna 1994, nr 288, s. 8
Współwytwórcy:
Rosolak, Ewa. Opracowanie
ER. Opracowanie
Data publikacji:
1994
Tematy:
Władza wojskowa organy naczelne Polska 1994 r.
Opis:
Zawiera: Poczekajmy na fakty : rozmowa z prof. Longinem Pastusiakiem / rozm. Ewa Rosolak; Potrafię sobie ułożyć pracę z generałami : rozmowa ze Zbigniewem Okońskim, która się nie odbyła / oprac. ER.
Dostawca treści:
Bibliografia CBW
Artykuł

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