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Wyszukujesz frazę "Zaniewski, Piotr" wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
The proposal of a new provisional border of range of the acidophilous oak forest Calamagrostio arundinaceae-Quercetum petraeae Hartm. 1934 Scam. et Pass. 1959 in central Poland
Autorzy:
Zaniewski, Piotr T.
Ciurzycki, Wojciech
Zaniewska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2041024.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest association range border
Quercetea-robori petraeae
sessile oak
Mazowsze
Kujawy
Łódź
Wielkopolska
Opis:
The range of acidophilous oak forest from Quercetea robori-petraeae Br-Bl. et Tx. ex Oberd. 1957 in Central Europe depends largely on the syntaxonomical concept used and is still provisional. The most continental association from this class occurring in Poland is Calamagrostio arundinaceae-Quercetum petraeae Hartm. 1934 Scam. et Pass. 1959. It is present in western and central Poland, but its eastern boundary is not well known. The aims of the study were to survey and document new patches of Calamagrostio-Quercetum in central Poland, to check the internal variation of the association and to summary the known distribution of it in lowlands of central-western and central Poland. 23 phytosociological relevés were made within new stands together with soil sampling. New relevé data was subjected to the numerical Wards classification together with acidophilous oak forests datasets from western Poland and oak-pine forests ones from eastern part of the Country. The new dataset was similar to Calamagrostio-Quercetum. Three subassociations were distinguished. Soil parameters and oak site index did not differ from acidophilous oak forest stands from other parts of Poland. The provisional range of Calamagrostio-Quercetum in central Poland was proposed to be moved by circa 60–90 km to the north-east (approximately as far as the Vistula river line) in order to include south-western part of Mazowsze.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 243-259
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contribution to the knowledge of fungi of the Kampinos National Park (Poland) with particular emphasis on the species occurring in burnt places
Autorzy:
Gierczyk, Błażej
Szczepkowski, Andrzej
Kujawa, Anna
Ślusarczyk, Tomasz
Zaniewski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/952609.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
fungal biota
macromycetes
pyrophilous species
post-fre fungi
ascomycota
basidiomycota
poland
Opis:
The paper presents 32 species of macrofungi new to the Kampinos National Park, found during the studies on fire-damaged areas after the forest fires in 2015. Three species new to Poland were described and illustrated (Calycellina leucella, Exobasidium juelianum, and Gymnopilus decipiens). Four species from Polish red list of macrofungi have been recorded in the Kampinos National Park for the first time: Botryobasidium vagum (R), Geastrum coronatum (V), Helicogloea farinacea (E), Inonotus cuticularis (R). During the current studies 17 pyrophilous species new to the Kampinos National Park were found.
Źródło:
Acta Mycologica; 2017, 52, 1
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scots pine Pinus sylvestris mortality after surface fire in oligotrophic pine forest Peucedano-Pinetum in Kampinos National Park
Autorzy:
Tyburski, Łukasz
Zaniewski, Piotr T.
Bolibok, Leszek
Piątkowski, Mateusz
Szczepkowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2044173.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
burn
Kampinos National Park
Scots pine
survival
Opis:
Pines are generally fire-resistant trees. There is a shortage of research on the behaviour of Scots pine after surface fire in older stands. The aim of the work was to describe the effect of the surface fire intensity on the mortality of pines of various diameter at breast height (DBH), including older trees. The research was conducted in Peucedano-Pinetum oligotrophic Scots-pine forest in Kampinos National Park (KPN, central Poland) on the area of two adjacent surface fire sites originated in spring 2015 in 60- to 200-year-old stands (site area: 10,92 ha). There were 45 (28 burned and 17 control) permanent plots established after the fire. The share of not burned, superficially burned and completely burnout organic horizon of the soil was determined within all of them. DBH and location of pine trees were measured within all of the plots on the area of 200 m2. For all of the trees for which full information about soil organic horizon damage was mapped, the prevailing type of disturbance in their close neighbourhoods with radii of 1 and 2 m was assessed. The mortality of trees was assessed after each vegetation period up to 2017, basing on the presence of green needles on the trees. The influence of fire intensity on the survival of trees was examined on whole permanent plot level as well as on individual tree level. Strong linear correlation was observed between Scots pine mortality and the share of plots area with damaged organic layer, especially at the end of the third vegetation period after fire. Logistic regression models constructed for individual trees suggest that bigger tree diameter (hence, thicker bark) diminished the odds of mortality only after two vegetation periods from the fire. After the third vegetation period, only the intensity of surface fire in the close neighbourhood of trees influenced (negatively) the chance on survival. The size of trees did no matter in this case. Nearly all of the trees that were located within burnout organic matter areas died. The results did not support the commonly known mechanism of enhancement of bigger Scots pine tree survival after surface fire because of thicker bark responsible for heat protection. Probably, the main cause of observed mortality was not overheating of cambium but it was rather connected to massive fine root loses. Scots pines growing on oligotrophic arid sites modify their root system to explore topsoil layers with higher proportion of shallow roots, growing even in organic litter layer. This corresponds with massive (regardless of size) pine mortality within sites characterised by complete burnout of organic matter layer and very high survival in those ones with only surfacely burned litter layer. The results can improve the assessment of surface fires consequences in managed Scots pine stands growing in oligotrophic conditions.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 1; 51-57
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A case study of working fluid selection for a small-scale waste heat recovery ORC system
Autorzy:
Klimaszewski, Piotr
Zaniewski, Dawid
Witanowski, Łukasz
Suchocki, Tomasz
Klonowicz, Piotr
Lampart, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/240748.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
waste heat recovery
organic Rankine cycle
ORC fluids
heat exchangers
turboexpander
ciepło odpadowe
odzysk ciepła
ORC
organiczny cykl Rankine'a
wymienniki ciepła
turboekspander
Opis:
The paper illustrates a case study of fluid selection for an internal combustion engine heat recovery organic Rankine cycle (ORC) system having the net power of about 30 kW. Various criteria of fluid selection are discussed. Particular attention is paid to thermodynamic performance of the system and human safety. The selection of working fluid for the ORC system has a large impact on the next steps of the design process, i.e., the working substance affects the turbine design and the size and type of heat exchangers. The final choice is usually a compromise between thermodynamic performance, safety and impact on natural environment. The most important parameters in thermodynamic analysis include calculations of net generated power and ORC cycle efficiency. Some level of toxicity and flammability can be accepted only if the leakages are very low. The fluid thermal stability level has to be taken into account too. The economy is a key aspect from the commercial point of view and that includes not only the fluid cost but also other costs which are the consequence of particular fluid selection. The paper discusses various configurations of the ORC system – with and without a regenerator and with direct or indirect evaporation. The selected working fluids for the considered particular power plant include toluene, DMC (dimethyl carbonate) and MM (hexamethyldisiloxane). Their advantages and disadvantages are outlined.
Źródło:
Archives of Thermodynamics; 2019, 40, 3; 159-180
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of an impulse and a reaction turbine stage for an ORC power plant
Autorzy:
Zaniewski, Dawid
Klimaszewski, Piotr
Witanowski, Łukasz
Jędzejewski, Łukasz
Klonowicz, Piotr
Lampart, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/240056.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CFD
waste heat recovery
steam turbine
organic Rankine cycle
ciepło odpadowe
odzysk ciepła
ORC
organiczny cykl Rankine'a
Opis:
Turbine stages can be divided into two types: impulse stages and reaction stages. The advantages of one type over the second one are generally known based on the basic physics of turbine stage. In this paper these differences between mentioned two types of turbines were indicated on the example of single stage turbines dedicated to work in organic Rankine cycle (ORC) power systems. The turbines for two ORC cases were analysed: the plant generating up to 30 kW and up to 300 kW of net electric power, respectively. Mentioned ORC systems operate with different working fluids: DMC (dimethyl carbonate) for the 30 kW power plant and MM (hexamethyldisiloxane) for the 300 kW power plant. The turbines were compared according to three major issues: thermodynamic and aerodynamic performance, mechanical and manufacturing aspects. The analysis was performed by means of the 0D turbomachinery theory and 3D computational aerodynamic calculations. As a result of this analysis, the paper indicates conclusions which type of turbine is a recommended choice to use in ORC systems taking into account the features of these systems.
Źródło:
Archives of Thermodynamics; 2019, 40, 3; 137-157
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endovascular aneurysm repair or open aneurysm repair for the treatment of abdominal aortic aneurysm – the latest update
Autorzy:
Kulig, Piotr
Lewandowski, Krzysztof
Ziaja, Damin
Zaniewski, Maciej
Kulig, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1394161.pdf
Data publikacji:
2016
Wydawca:
Index Copernicus International
Źródło:
Polish Journal of Surgery; 2016, 88, 3; 166-174
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda wewnątrznaczyniowa czy otwarta w leczeniu tętniaka aorty brzusznej – najnowsze doniesienia
Autorzy:
Kulig, Piotr
Lewandowski, Krzysztof
Ziaja, Damin
Zaniewski, Maciej
Kulig, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1394192.pdf
Data publikacji:
2016
Wydawca:
Index Copernicus International
Źródło:
Polish Journal of Surgery; 2016, 88, 3; 286-306
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ostra niedrożność przewodu pokarmowego. Ocena zapadalności na podstawie analizy materiału własnego
Acute intestinal obstruction. Incidence estimation based on own material analysis
Autorzy:
Kostecki, Jacek
Zaniewski, Maciej
Hadasik, Dawid
Smyła, Zbigniew
Majewski, Eugeniusz
Korzeniowski, Tomasz
Piekorz, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1034684.pdf
Data publikacji:
2011
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
niedrożność przewodu pokarmowego
rak jelita grubego
zrosty otrzewnowe
intestinal obstruction
colorectal cancer
abdominal adhesions
Opis:
BACKGROUND Intestinal obstruction is cured in surgery department. Despite endoscopy, which is fast developing alternative method, classical surgery is still basic and most effective way of treatment. Except obstruction, mainly caused by cancer, incarcerated hernia and adhesions are the other main reasons of ileus. Abdominal adhesions develop mainly as an effect of previous operations. The aim of this study was to compare frequency of each type of ileus in two similar periods. MATERIAL AND METHODS Retrospective analysis was performed on 318 patients operated in two periods: 1980–1983 and 2006–2009 in Department of Surgery of District Specialist Hospital in Tychy. RESULTS Ileus caused by incancerated hernia and abdominal adhesions was found in 210 cases (66.1%). Obstruction was reason of 108 cases (33.9%). The most frequent reason of strangulation ileus was incancerated hernia (53.6%). The main reason of obstructive ileus was cancer (93%). There were significant differences between analised two periods. There were more cases of ileus in period 2006–2009 comparing to years 1980–1983 (200 vs 118). We observed significant more abdominal adhesions (67 vs 30) and obstructions as an eff ect of cancer (76 vs 25). There were no significant differences in frequency of incancerated hernias. CONCLUSIONS It’s urgent and still great problem to find effective way of preventing abdominal adhesions. Such big increase of colorectal cancer in advanced stage cannot be explained by longer mean length of live. Physician’s more effective training in oncology is urgent necessity. More effective diagnostic and prophylactic programs should be introduced.
WSTĘP Niedrożność mechaniczna przewodu pokarmowego jest chorobą leczoną w oddziałach chirurgii. Pomimo szybkiego rozwoju alternatywnych endoskopowych metod leczenia, klasyczna chirurgia jest nadal podstawowym i najskuteczniejszym sposobem postępowania w przypadku niedrożności. Poza zatkaniem, którego najczęstszą przyczyną są nowotwory, innymi głównymi powodami niedrożności są uwięźnięta przepuklina lub zrosty jelitowe (powstające głównie jako wynik poprzednich laparotomii). Celem pracy było porównanie częstości występowania poszczególnych typów ostrej niedrożności przewodu pokarmowego w dwóch odległych od siebie jednakowych okresach czasu. MATERIAŁ I METODY W latach 1980–1983 oraz 2006–2009 na Oddziale Chirurgii Ogólnej Wojewódzkiego Szpitala Specjalistycznego w Tychach z powodu ostrej niedrożności jelit leczono operacyjnie 318 chorych. Dokonano retrospektywnej analizy historii chorób. WYNIKI Niedrożność z zadzierzgnięcia stwierdzono u 210 (66,1%), a z zatkania u 108 chorych (33,9%). U chorych z niedrożnością z zadzierzgnięcia dominowała niedrożność spowodowana uwięźnięciem przepukliny (53,6%). Główną przyczyną niedrożności z zatkania była zmiana nowotworowa (93%). Stwierdzono istotne różnice w częstości występowania ostrych niedrożności w obydwu okresach czasowych. Porównując lata 2006–2009 z okresem wcześniejszym stwierdzono istotny wzrost przypadków (200 vs 118) niedrożności. Analizując poszczególne typy niedrożności, poza znacząco większą liczbą niedrożności wywołanych nowotworami (76 vs 25), uwagę zwraca częstsze występowanie niedrożności spowodowanej przez zrosty jelitowe (67 vs 30). Nie zaobserwowano istotnych różnic w liczbie niedrożności wywołanych uwięźnięciem przepukliny. WNIOSKI Poszukiwanie skutecznego zapobiegania zrostom otrzewnowym pozostaje pilnym, nadal otwartym problemem. Znaczący wzrost liczby nowotworów jelita grubego nie może być tłumaczony starzeniem się społeczeństwa. Konieczne jest zwrócenie większej uwagi na szkolenie lekarzy w zakresie onkologii i wprowadzenie skutecznych programów diagnostycznych oraz profilaktycznych.
Źródło:
Annales Academiae Medicae Silesiensis; 2011, 65, 1-2; 20-24
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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