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Tytuł:
Impact of Voltage Conditions on Distributed Generation Connectivity in Medium Voltage Grids
Wpływ warunków napięciowych na możliwości przyłączenia generacji rozproszonej w sieci średniego napięcia
Autorzy:
Grządzielski, I.
Marszałkiewicz, K.
Trzeciak, A.
Powiązania:
https://bibliotekanauki.pl/articles/397051.pdf
Data publikacji:
2015
Wydawca:
ENERGA
Tematy:
distributed generation in medium voltage grid
connectivity voltage criteria
generacja rozproszona w sieci średniego napięcia
sieć średniego napięcia
kryteria napięciowe przyłączania
Opis:
A significant increase in the distributed generating sources connected and planned for connection to medium voltage (MV) grids makes voltage criteria very important in assessing the sources’ connectivity. Many requests have been submitted for connection of distributed generation sources at a considerable distance (even a dozen or so kilometres) from a main supply substation’s MV buses. As a rule, these are requests for the interconnection deep in an existing MV bus, but also directly to MV switching substation bays. Then maintaining appropriate voltage levels becomes a basic technical problem. Another technical problem relates to meeting the power quality criteria. THD index, and the level of individual harmonics, significantly increases, in many cases reaching or even exceeding the boundary values. With their extensive experience, the authors present examples and results of some analyses herewith. They indicate the impact of voltage conditions on the connection possibilities of distributed generation to MV grids.
Znaczny wzrost przyłączanych i planowanych do przyłączenia źródeł wytwórczych generacji rozproszonej do sieci średniego napięcia (SN) powoduje, że kryteria napięciowe stają się bardzo ważne przy ocenie możliwości przyłączenia przedmiotowych źródeł. Odnotowuje się dużo składanych wniosków o przyłączenie źródeł wytwórczych generacji rozproszonej w znacznej odległości (nawet kilkunastu km) od szyn średniego napięcia GPZ. Z reguły są to wnioski o przyłączenie w głębi istniejących magistrali średniego napięcia, a także bezpośrednio do pól rozdzielni SN. Jednym z podstawowych problemów technicznych staje się wtedy dotrzymanie odpowiednich poziomów napięć. Inny problem techniczny dotyczy spełnienia kryterium jakości energii. Współczynnik THD, a także poziom indywidualnych harmonicznych, znacznie wzrasta, osiągając lub nawet przekraczając już w wielu przypadkach wartości graniczne. Autorzy, dysponując bogatym doświadczeniem, przedstawiają w artykule przykłady i wyniki przeprowadzanych niektórych analiz. Wskazują, jaki wpływ mają warunki napięciowe na możliwości przyłączenia generacji rozproszonej do sieci SN.
Źródło:
Acta Energetica; 2015, 4; 27-40
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the results of mathematical modeling of a GTM 120 miniature turbine jet engine with the research results
Autorzy:
Chachurski, R.
Trzeciak, A.
Jędrowiak, B.
Powiązania:
https://bibliotekanauki.pl/articles/133071.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
miniature jet engine
jet engine
miniaturowy silnik odrzutowy
silnik odrzutowy
Opis:
The paper presents gas-dynamic calculations of a GTM 120 miniature turbine jet engine. The engine performance parameters have been determined and then validated with theory contained in literature as well as the results of research carried out on a laboratory test stand.
Źródło:
Combustion Engines; 2018, 57, 2; 30-33
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tests and Trials Viewing Specifications of Power and Wind Farms – Selected Issues
Testy i próby sprawdzające parametry techniczne elektrowni i farm wiatrowych. Wybrane zagadnienia
Autorzy:
Marszałkiewicz, K.
Grządzielski, I.
Trzeciak, A.
Maćkowiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/397405.pdf
Data publikacji:
2014
Wydawca:
ENERGA
Tematy:
wind farm
operational tests
farma wiatrowa
testy eksploatacyjne
elektrownia wiatrowa
Opis:
After connecting and running the wind farm must undergo a series of tests to confirm the specific supplies’ properties. This article presents selected issues associated with tests and trials viewing technical parameters – regulatory properties of wind farms in the field of active power, voltage drops and the influence on energy quality at the point of attachment.
Po przyłączeniu i uruchomieniu farma wiatrowa musi przejść serię testów potwierdzających określone właściwości eksploatacyjne. W artykule autorzy przedstawili wybrane zagadnienia związane z testami i próbami sprawdzającymi parametry techniczne, właściwości regulacyjne farm wiatrowych w zakresie mocy czynnej, prz zapadach napięcia oraz wpływ na jakość energii w punkcie przyłączenia.
Źródło:
Acta Energetica; 2014, 3; 101-113
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Platelets – an important element of the immune system
Autorzy:
Trzeciak-Ryczek, A.
Tokarz-Deptula, B.
Deptula, W.
Powiązania:
https://bibliotekanauki.pl/articles/31958.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Platelets are anucleate cells derived from the megakaryocyte series, and have long been considered only as cells responsible for coagulation and the fibrinolysis process. However, recently more data shows that they are also effector cells in the inflammatory response and important elements of the immunological response. Platelets store and release many biologically active substances, including growth factors, cytokines and chemokines (tab. 1), which actively affect i.a. elements of the immune system, and thus become regulators of immunity and mediators of inflammatory response. Their impact on the immune system cells is also associated with the induction of leucocytes and progenitor cells to the site of pathogen permeation or vascular injury inflow, as well as endothelial cells. Interacting with neutrophils, monocytes and lymphocytes, they not only activate them, but also form platelet-leukocyte aggregates that immobilise pathogens and prevent their spreading. Furthermore, platelets are capable of absorbing pathogens, affecting anti-infection immunity of the system. It is also assumed that the presence of receptors on their surface, such as Toll-like receptors (TLRs), affects their initiation and activity of the immunological response.
Źródło:
Polish Journal of Veterinary Sciences; 2013, 16, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Values of apoptosis of lymphocytes and granulocytes in peripheral blood of Polish mixed-breed rabbits in the annual cycle
Autorzy:
Tokarz-Deptula, D.
Hukowska-Szematowicz, B.
Niedzwidzka-Rystwej, P.
Trzeciak-Ryczek, A.
Deptula, W.
Powiązania:
https://bibliotekanauki.pl/articles/31009.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The objective of the study was to determine values of apoptosis for peripheral blood lymphocytes and granulocytes, including dependency on the season of the year, in Polish mixed-breed rabbits and in mixed-breed rabbits with the addition of blood of meat-breed rabbits. The study was carried out in four seasons of the year (spring, summer, autumn, winter) involving 120 Polish mixed-breed rabbits – group I, and 120 Polish mixed-breed rabbits with addition of meat-breed rabbit blood – group II. Assessment of apoptosis of lymphocytes and granulocytes was performed using as FACScan cytometer by Becton Dickinson with FACSDiva software (USA), using as ApoFluor®Green Caspase reagent kit (MP Biomedicals, USA) to detect the activity of the total caspase pool 1, 3, 4, 5, 6, 7, 8, 9 in granulocytes and lymphocytes of rabbit peripheral blood. The results for apoptosis of lymphocytes and granulocytes in peripheral blood in the animals investigated (group I and II) were subjected to statistical analysis with the t’Student test at p=0.05. It was noted that, in rabbits from group I, the values for apoptosis of lymphocytes were the highest in winter and autumn (36.02% and 31.24%, respectively), and the lowest in spring and summer (26.73% and 22.72%, respectively), whereas in the case of granulocytes the highest values were in summer and spring (14.69% and 12.95%, respectively), and the lowest in winter and autumn (8.16% and 8.57%, respectively). In mixed-breed rabbits with the addition of meat-breed blood (group II), the values for apoptosis of lympocytes were the highest in spring (29.13%), and the lowest in summer (25.43%); whereas in the case of granulocytes the highest values were in summer and spring (14.0% and 11.15%, respectively), and the lowest in autumn and winter (7.46% and 7.64%, respectively).
Źródło:
Polish Journal of Veterinary Sciences; 2017, 20, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Values of white and red blood cell parameters in Polish mixed breed rabbits in the annual cycle
Autorzy:
Tokarz-Deptula, .
Niedzwiecka-Rystwej, P.
Adamiak, M.
Hukowska-Szematowicz, B.
Trzeciak-Ryczek, A.
Deptula, W.
Powiązania:
https://bibliotekanauki.pl/articles/32430.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of the study was to develop reference values for such haematologic values as haemoglobin concentration, haematocrit value, volume of erythrocytes, thrombocytes, leucocytes, lymphocytes, neutrophils, basophils, eosinophils and monocytes in peripheral blood in Polish mixed-breed rabbits, considering the impact of the season (spring, summer, autumn, winter), and sex of the animals. The results reveal, that the season of the year has a small impact in Polish mixed-breed rabbits, and it principally referred to spring and summer. Finally it was shown, that sex has average impact on the studied values of haematological parameters.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hematological parameters in Polish mixed breed rabbits with addition of meat breed blood in the annual cycle
Autorzy:
Tokarz-Deptula, B.
Niedzwiecka-Rystwej, P.
Adamiak, M.
Hukowska-Szematowicz, B.
Trzeciak-Ryczek, A.
Deptula, W.
Powiązania:
https://bibliotekanauki.pl/articles/30719.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
In the paper we studied haematologic values,such as haemoglobin concentration, haematocrit value, thrombocytes, leucocytes: lymphocytes, neutrophils, basophils, eosinophils and monocytes in the pheral blood in Polish mixed-breeds with addition of meat breed blood in order to obtain the reference values which are until now not available for this animals. In studying this indices we took into consideration the impact of the season (spring, summer, autumn, winter), and sex of the animals. The studies have shown a high impact of the season of the year on those rabbits, but only in spring and summer. Moreover we observed that the sex has mean impact on the studied values of haematological parameters in those rabbits. According to our knowledge, this is the first paper on haematologic values in this widely used group of rabbits, so they may serve as reference values.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
B-cell and T-cell values in peripheral blood in Polish mixed-breed rabbits with addition of blood of meet breeds
Autorzy:
Tokarz-Deptula, B.
Niedzwiedzka-Rystwej, P.
Hukowska-Szematowicz, B.
Adamiak, M.
Trzeciak-Ryczek, A.
Deptula, W.
Powiązania:
https://bibliotekanauki.pl/articles/30822.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
In Poland, rabbit is a highly valued animal, due to dietetic and flavour values of its meat, but above all, rabbits tend to be commonly used laboratory animals. The aim of the study was developing standards for counts of B-cells with CD19+ receptor, T-cells with CD5+ receptor, and their subpopulations, namely T-cells with CD4+, CD8+ and CD25+ receptor in the peripheral blood of mixed-breed Polish rabbits with addition of blood of meet breeds, including the assessment of the impact of four seasons of the year and animal sex on the values of the immunological parameters determined. The results showed that the counts of B- and T-cells and their subpopulations in peripheral blood remain within the following ranges: for CD19+ B-cells: 1.05 - 3.05%, for CD5+ T-cells: 34.00 - 43.07%, CD4+ T-cells: 23.52 - 33.23%, CD8+ T-cells: 12.55 - 17.30%, whereas for CD25+ T-cells: 0.72 - 2.81%. As it comes to the season of the year, it was observed that it principally affects the values of CD25+ T-cells, while in the case of rabbit sex, more changes were found in females.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Natural immunity factors in Polish mixed breed rabbits
Autorzy:
Tokarz-Deptula, B.
Niedzwiedzka-Rystwej, P.
Adamiak, M.
Hukowska-Szematowicz, B.
Trzeciak-Ryczek, A.
Deptula, W.
Powiązania:
https://bibliotekanauki.pl/articles/2087985.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Mixed-breed rabbits in Poland are widely used for diagnostic and scientific research and as utility animals, therefore there is a need to know their immunological status, as well as their haematological status. In this study natural immunity factors were analyzed in Polish mixed-breed rabbits and Polish mixed-breed rabbits with addition of blood of meet-breed, considering the impact of sex and season of the year (spring, summer, autumn, winter) using measurement of non-specific cellular and humoral immunity parameters in peripheral blood. The study has revealed that there is a variety between the two commonly used mixed-breed types of rabbits, especially when sex and season is concerned, which is crucial for using these animals in experiments.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel isoforms of transcript of the EDA gene confirm X-linked inheritance of anhidrotic ectodermal dysplasia
Autorzy:
Kobielak, K
Kobielak, A.
Trzeciak, W.H.
Powiązania:
https://bibliotekanauki.pl/articles/2043606.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dysplasia
inheritance
anhidrotic ectodermal dysplasia
Christ-Siemens-Touraine syndrome
Tabby gene
EDA gene
gene transcript
Źródło:
Journal of Applied Genetics; 1999, 40, 4; 355-364
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Is the recently discovered EDA gene associated with anhidrotic ectodermal dysplasia?
Autorzy:
Kobielak, K
Kobielak, A
Trzeciak, W H
Powiązania:
https://bibliotekanauki.pl/articles/2046683.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ectodermal-mesodermal interaction
X chromosome
submicroscopic deletion
hyperthermia
Christ-Siemens-Touraine syndrome
hybridization
ectodermal dysplasia
mutation
somatic cell
linkage analysis
embryonic life
transmembrane receptor
Opis:
The evidence from literature strongly suggests that Christ-Siemens-Touraine (CST) syndrome is associated with mutations of the newly discovered EDA gene. The gene is situated on the long arm of the X chromosome (Xq12.2-q13.1) and contains two exons separated by a 200 kbp intron. The 5’-untranslated region and most of the coding sequence are localized in exon 1, while three C-terminal amino acids are encoded by exon 2. The coding sequence was interrupted by translocations in three affected females: t(X;l), t(X;12), t(X;9), and submicroscopic deletions of the EDA gene were found in five males with CST syndrome, and point mutations were discovered in exon 1 in nine other patients. Northern blot analysis and in situ hybridization studies revealed that the EDA gene was expressed in the foetus, and postnatally in a specific type of skin cell and that the expression was limited to cells of ectodermal origin. A predicted protein product of the EDA gene contains 135 to 140 amino acids, organized in three distinct domains and may belong to class II transmembrane receptors.
Źródło:
Journal of Applied Genetics; 1997, 38, 3; 343-357
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The application of in vitro cattle embryo production system to study the influence of elevated temperature on oocyte maturation, fertilization and early embryonic development
Autorzy:
Rynkowska, A.
Rapala, L.
Trzeciak, P.
Duszewska, A.M.
Powiązania:
https://bibliotekanauki.pl/articles/80225.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antioxidant
apoptosis
cattle
embryo
embryonic development
female reproductive system
fertilization
glutathione
heat shock protein
Hsp70 protein
hyperthermia
in vitro
oocyte
oocyte maturation
sperm
temperature
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2011, 92, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors determining range and tendencies of groundwater level changes in Kampinos National Park wetland areas
Autorzy:
Krogulec, E.
Furmankowska, A.
Trzeciak, J.
Zabłocki, S.
Powiązania:
https://bibliotekanauki.pl/articles/2063004.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
renaturalisation
wetland areas
monitoring observations
groundwater level
Kampinos National Park
Opis:
The marsh zone areas include about 2,440 km2 in Kampinos National Park, which amount nearly 30% of park and its buffer’s surface. The specific characteristic of the KNP marsh zones is presence of shallow groundwater; mean depth to groundwater table is formed from 0.16 do 2.30 m. Range and tendencies of groundwater level changes in marsh zones are related to the influence of geogenic and anthropogenic factors. Among geogenic factors, the most important sense have distribution and seasonality of precipitation, which determine the value of infiltration recharge, evapotranspiration and watercourse drainage of shallow groundwater system. The basis of the researches on defining the role of factors determining range and tendencies of groundwater level changes in KNP, has been regular monitoring observations conducted in the park since 1999. The results of correlation indicate on high diversification of relation: atmospheric precipitation – depth to groundwater level. Determination of trend on the different significance levels provides detaching areas where relation between groundwater levels and precipitation is so high that influence of other environmental factors indicating on depth to groundwater table could be skipped and areas where the relation is so low, which indicates on influence of various factors. Groundwater level in marsh areas are characterized by large dynamic of changes. Since 1999, the beginning of the observations, downward trend of groundwater table has been observed, after 2003 the character of trend has been conversed. Another decreasing trend has started in 2007 and with assumption of previous tendencies, its inversion will occur after 2011 (after extremely dry year). Geostatistical analysis of spatial difference of mean year amplitude of depth to groundwater level enabled the assessment of surface water influence on groundwater level changes. The areas of highest value of amplitudes are localized in southern part of northern marsh belt and central part of southern marsh belt. Anthropogenic factors such as: water withdrawal and improper draining system, have not changed in recent years, so their influence can be called as “steady” and acceptably to eliminate in case of elaborating of programs of wetland areas renaturalisation.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2010, 441 Hydrogeologia z. 10; 73--81
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Volvulus of Transverse Colon as A Rare Cause of Obstruction – A Case Report and Literature Review
Autorzy:
Walczak, Dominik A.
Czerwińska, Monika
Fałek, Wojciech
Trzeciak, Piotr W.
Powiązania:
https://bibliotekanauki.pl/articles/1396410.pdf
Data publikacji:
2013-10-01
Wydawca:
Index Copernicus International
Tematy:
colon volvulus
transverse colon volvulus
intestinal obstruction
transverse colon
Opis:
Volvulus of transverse colon is a rare cause of large bowel obstruction. Diagnosis can be challenging and the effective management remains controversial. We report a case of volvulus of the transverse colon in a 76-year-old woman. The literature regarding diagnosis and treatment of such pathology was also reviewed.
Źródło:
Polish Journal of Surgery; 2013, 85, 10; 605-607
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Retroperitoneal „Ancient” Schwannoma – A Rare Case of Rare Location: Case Report and Literature Review
Autorzy:
Walczak, Dominik A.
Jaguścik, Rajmund
Olborski, Bogusław
Fałek, Wojciech
Trzeciak, Piotr W.
Powiązania:
https://bibliotekanauki.pl/articles/1397019.pdf
Data publikacji:
2012-12-01
Wydawca:
Index Copernicus International
Tematy:
schwannoma
“ancient schwannoma”
neurilemmoma
retroperitoneal tumor
Opis:
Schwannomas are benign tumors derived from glial cells of peripheral nerve sheaths. They usually occur in association with Von Recklinghausen‘s disease and most commonly are observed on the head, neck, and upper extremities. Rare morphological variants may be misinterpreted as a malignancy under microscopic examination. The study presented a case of a sporadic “ancient” Schwannoma cell tumor located in the retroperitoneum. Literature data concerning diagnosis and treatment of the above-mentioned pathology was also reviewed.
Źródło:
Polish Journal of Surgery; 2012, 84, 12; 646-650
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł

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