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Wyszukujesz frazę "Tkaczyk, A." wg kryterium: Autor


Tytuł:
Wirtualna stabilizacja kręgosłupa człowieka po złamaniu kompresyjnym na odcinku piersiowo-lędźwiowym
Virtual stabilization of human thoracic – lumbar spine with a compressive fracture
Autorzy:
Zięba, Ł.
Dąbrowska-Tkaczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/99259.pdf
Data publikacji:
2011
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
kręgosłup piersiowo-lędźwiowy
złamanie kompresyjne
stabilizacja kręgosłupa
model geometryczny
thoracic-lumbar spine
compressive fracture
spine stabilization
geometrical model
Opis:
W pracy przedstawiono model geometryczny odcinka piersiowo lędźwiowego kręgosłupa (Th12 - L2), ze złamanym kompresyjnie trzonem kręgu L1 wraz z systemem korekcyjno - stabilizacyjnym USS Fracture System. Opracowano modele geometryczne struktur anatomicznych w tym trzonów Th12, L2 oraz połamanego trzonu L1, tkanek miękkich, czyli: więzadeł podłużnych: przedniego ALL i tylnego PLL oraz krążków międzykręgowych, jak również modele implantów zastosowanych do dwupoziomowej stabilizacji. Wykorzystano dane CT pacjenta oraz oprogramowanie Mimics 13.1 i SolidWorks 2010.
A geometrical model of the two-level-stabilization of human thoraciclumbar spine (Th12 – L2) with compressive fractured L1 vertebral body has been presented in the paper. The developed model comprises both the aforementioned bone anatomical structures and the soft tissue ones (anterior and posterior longitudinal ligaments (ALL, PLL) and spinal discs) and models of the applied USS Fracture system of implants. CT data of a patient and the Mimics 13.1 and SolidWorks 2010 software packages have been used in the modeling procedure.
Źródło:
Aktualne Problemy Biomechaniki; 2011, 5; 189-194
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication and Electrical Characterization of PbS-EuS Ferromagnetic Semiconductor Microstructures
Autorzy:
Wrotek, S.
Morawski, A.
Tkaczyk, Z.
Mąkosa, A.
Wosiński, T.
Dybko, K.
Łusakowska, E.
Story, T.
Sipatov, A. Yu.
Pécz, B.
Grasza, K.
Szczerbakow, A.
Wróbel, J.
Powiązania:
https://bibliotekanauki.pl/articles/2038135.pdf
Data publikacji:
2004-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.61.Le
75.30.Et
75.70.Cn
Opis:
Current-voltage characteristics and temperature dependence of differential conductance were studied in lithographically patterned (lateral dimensions from 10 x 10 μm$\text{}^{2}$ to 100 x 100 μm$\text{}^{2}$) ferromagnetic EuS-PbS-EuS microstructures. Below the ferromagnetic transition temperature a 4% decrease in the structure conductance was observed for mutual antiferromagnetic orientation of magnetization vectors of ferromagnetic EuS layers.
Źródło:
Acta Physica Polonica A; 2004, 105, 6; 615-620
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vertical Electron Transport through PbS-EuS Structures
Autorzy:
Wrotek, S.
Dybko, K.
Morawski, A.
Mąkosa, A.
Wosiński, T.
Figielski, T.
Tkaczyk, Z.
Łusakowska, E.
Story, T.
Sipatov, A. Yu.
Szczerbakow, A.
Grasza, K.
Wróbel, J.
Palosz, W.
Powiązania:
https://bibliotekanauki.pl/articles/2036032.pdf
Data publikacji:
2003-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.20.Ck
75.30.Et
Opis:
Temperature dependence of current-voltage I-V characteristics and resistivity is studied in ferromagnetic PbS-EuS semiconductor tunnel structures grown on n-PbS (100) substrates. For the structures with a single (2-4 nm thick) ferromagnetic EuS electron barrier we observe strongly non-linear I-V characteristics with an effective tunneling barrier height of 0.3-0.7 eV. The experimentally observed non-monotonic temperature dependence of the (normal to the plane of the structure) electrical resistance of these structures is discussed in terms of the electron tunneling mechanism taking into account the temperature dependent shift of the band offsets at the EuS-PbS heterointerface as well as the exchange splitting of the electronic states at the bottom of the conduction band of EuS.
Źródło:
Acta Physica Polonica A; 2003, 103, 6; 629-635
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mineral nitrogen content in hydrographic areas of Poland depending on land use
Autorzy:
Watros, A.
Lipińska, H.
Lipiński, W.
Tkaczyk, P.
Krzyszczak, J.
Baranowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/2082611.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
nitrogen
spatial distribution
hydrographic areas
land use
grassland
Opis:
One unintended consequence of nitrogen use in agriculture is an increase in nitrate content in ground waters. Nitrogen content was evaluated in soil samples from specific hydrographic regions of Poland from the 60-90 cm soil layer, in which this nutrient is not readily available to the main root mass of crop plants and may negatively affect the environment. It was revealed that Nmin content in specific hydrographic regions was highly dependent on both the soil type and land use. Notably higher values of Nmin content were observed for organic soils. The highest N contents were found in the grasslands of the northwestern area of Poland, while they were slightly lower in several regions of the main Odra River catchment and west of the Vistula River. The area with a high Nmin content in soils under maize was significantly larger compared to the grasslands area and primarily included the hydrographic regions of the Odra River basin in its south-western stretch, and of the Vistula River on its western and south-eastern side. With regard to the arable land under mixed cereals, the soils with the highest Nmin content in the non-root layer were predominantly located in hydrographic regions belonging to the main Odra catchment and to the catchment of the Vistula River in its upper course.
Źródło:
International Agrophysics; 2019, 33, 4; 481-491
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mineral nitrogen content in the 60-90 cm layer of grassland soils relative to other fodder crops, way of managing agricultural lands and farming intensity
Zawartość azotu mineralnego w warstwie 60-90 cm gleb użytków zielonych na tle innych upraw o przeznaczeniu paszowym, sposobów zagospodarowania użytków rolnych oraz intensywności gospodarowania
Autorzy:
Watros, A.
Lipinska, H.
Lipinski, W.
Tkaczyk, P.
Krzyszczak, J.
Baranowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/36512.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Źródło:
Acta Agrophysica; 2018, 25, 3
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the effectiveness of training on a machine with a variable-cam
Autorzy:
Urbanik, C.
Staniszewski, M.
Mastalerz, A.
Karczewska, M.
Lutosławska, G.
Iwańska, D.
Madej, A.
Ostrowska, E.
Gwarek, L.
Tkaczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/307428.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
resistance training
elbow flexors
variable-cam
creatine kinase
trening
łokieć
mięśnie
kreatyna
kinaza
Opis:
The aim of the study was to assess the effectiveness of the training of elbow flexors through the use of 2 machines, one of which was equipped with a disc plate of constant radius, the other one with a variable-cam having a radius adjustable to muscle strength. The experiment included 45 men divided into 3 equal groups: training group A (variable-cam), training group B (circle), and control group C. The training lasted for 8 weeks, 3 times a week. In order to control the effects, the values of peak torque and power of the flexor muscles of the elbow were isokinetically measured for the angular velocities of 30°/s and 60°/s. Also taken were anthropometric measurements of the arm and the creatine kinase (CK) activity in the blood plasma. As a result of the training, significant increases of biomechanical values were noted only in group A: power increased over 20%, the peak torque over 14%. After the training, significant increases of arm circumference in the relaxed position were noted in group A (17 mm), as well as in group B (11 mm). Also, some changes in CK activity were observed between Monday and Friday in a training week. On the basis of the experimental measurements, it may be ascertained that training elbow flexor muscles on a machine with a variable-cam is more efficient for increases in strength and power, as well as for some anthropometric parameters, than training on a machine with a disc plate.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 4; 93-102
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mycophenolate mofetil for treatment of idiopathic nephrotic syndrome – a single center experience (preliminary study)
Autorzy:
Tomczyk, D.
Jander, A.
Mihailescu, J.
Tkaczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/1916459.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
idiopathic nephrotic syndrome
mycophenolate mofetil
child
recurrence
Opis:
Introduction: Mycophenolate mofetil (MMF) is used in treatment of idiopathic nephrotic syndrome in children (INS). Purpose: To evaluate clinical results of MMF treatment in steroid-dependent (SD) and steroid-resistant (SR) nephrotic syndrome. Materials and methods: A retrospective analysis of 26 patients (19 boys, 7 girls) with SDINS and SRINS treated with MMF during the years 2003–2013 was made. The remission length of INS and number of relapses per year before the introduction of MMF and after 12 months was calculated. An analysis of the side effects was made. Results: The median age of INS diagnosis was 26.5 months (IQRs 24-36 months). Nineteen of the patients (73%) suffered from SDINS whereas the remaining 7 (27%) had SRINS. Twenty three (88.5%) patients underwent renal biopsy: minimal change disease (MCD) in 69.6% (n=16), focal segmental glomerulosclerosis (FSGS) in 17.4% (n=4), membranoproliferative glomerulonephritis (MPGN) in 8.7% (n=2) and mesangial cell proliferation in one case. The median MMF dosage was 956.0 mg/m2/24h (IQRs 768.1-1059.7 mg/m2/24h). Eleven patients (42.3%) were taking MMF together with cyclosporine A (CsA). In patients suffering from SDINS, there was a trend to lower the recurrence rate during MMF treatment [2.0/year (IQRs 0.25-2.0 per year) vs 2.0/year (IQRs 1.0-2.75 per year), p=0.09]. Remission without proteinuria was significantly longer in patients treated with MMF; remission median was 8.5 month (IQRs 6.25-11.0 month) vs 4.5 month (IQRs 4.0-7.5 month), (p=0.014), similarly the average length of remission without corticosteroids was 6.0 months (IQRs 0.25-8.5 months) vs 3.0 months (IQRs 0.0-7.25) months (p=0.028). In children SRINS, 4/7 children MMF treatment was clinically ineffective. Side effects of the treatment were: leucopenia (n =10), hyperbilirubinemia (n = 3), gastrointestinal disorders (n = 1) and anemia (n = 1). Conclusion: This study confirmed the efficacy of the treatment with MMF in SDINR in comparison with previously used drugs, with a small number of side effects.
Źródło:
Progress in Health Sciences; 2014, 4, 1; 61-67
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany odczynu i zasobności wskładniki pokarmowe gleb uprawnych Lubelszczyzny
Changes in the pH and nutrient content of cultivated soils in the Lublin region
Autorzy:
Tkaczyk, P.
Rutkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/13096024.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Źródło:
Agronomy Science; 2020, 75, 3; 5-18
2544-4476
2544-798X
Pojawia się w:
Agronomy Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of CO2 enhancement on beech (Fagus sylvatica L.) seedling root rot due to Phytophthora plurivora and Phytophthora cactorum
Autorzy:
Tkaczyk, M.
Sikora, K.
Nowakowska, J.A.
Kubiak, K.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/38525.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 3
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Field of pressure in zone contact elements assembly PRC stationary quantification
Autorzy:
Tkaczyk, M.
Kaźmierczak, A.
Kaźmierczak, Ł.
Górniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/246221.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
piston combustion engines
PRC systems
CFD
Opis:
One of the most common worldwide rubbing couple which performs plane-turning motion is a pair of selling rings - cylinder sleeve of a Piston - Ring- Cylinder (PRC) system of a combustion engine. It explains the necessity of performing investigations concerning the phenomenon occurring in rubbing couple PRC. One of the most important issues is the friction losses as well as losses of the working medium from the combustion chamber. Mathematical models of gas flow in the PRC are described in the literature differ in the way of description and scope of the phenomena taken into account. In this paper approach to determine the flow spaces between the rings considering the effect of the geometry of the PRC system has been proposed. Investigation conducted with aid of CFD (Computational Fluid Dynamics) were aimed on determination of flow resistance within the surface between the piston, rings, and cylinder liner. Aim of the study was achieved - The pressure field. it has been found that it is possible to determine the pressure field in the space of the PRC system basing on the approximation of the generalized transport equations for a discrete geometric model using the finite volume method. The precision of the results depends on the account in the form of boundary conditions as well as external conditions.
Źródło:
Journal of KONES; 2011, 18, 3; 463-471
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Four different Phytophthora species that are able to infect Scots pine seedlings in laboratory conditions
Autorzy:
Tkaczyk, M.
Sikora, K.
Nowakowska, J.A.
Anisko, E.
Oszako, T.
Belbahri, L.
Milenkovic, I.
Powiązania:
https://bibliotekanauki.pl/articles/38602.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2016, 58, 3
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nawozy fosforynowe jako stymulatory wzrostu roślin w szkółkach leśnych
Phosphite fertilizers as a plant growth stimulators in forest nurseries
Autorzy:
Tkaczyk, M.
Nowakowska, J.A.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/991118.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
szkolki lesne
nawozy
Actifos
stymulatory wzrostu
sadzonki
sosna zwyczajna
Pinus sylvestris
swierk pospolity
Picea abies
dab szypulkowy
Quercus robur
buk zwyczajny
Fagus sylvatica
olsza czarna
Alnus glutinosa
wzrost roslin
fertilizer
actifos
seedlings
pinus sylvestris
picea abies
quercus robur
fagus sylvatica
alnus glutinosa
Opis:
In the situation of limited number of pesticides being approved for use in forest nurseries it is necessary to examine new products available on European market that stimulate growth and improve resilience and vitality of seedlings as a part of intgrated plant protection program. Paper presents test of fertilizer Actifos used in seven Polish nurseries in order to stimulate the growth of seedlings. In 64% of cases, Actifos stimulated increament of shoots (significantly for oaks, beeches, pines, spruces and alders) as well as for roots (significantly only for alders and oaks).
Źródło:
Sylwan; 2014, 158, 01; 3-9
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phosphite fertilisers as inhibitors of Hymenoscyphus fraxineus (anamorph Chalara fraxinea) growth in tests in vitro
Autorzy:
Tkaczyk, M.
Pacia, A.
Siebyla, M.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/38378.pdf
Data publikacji:
2017
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2017, 59, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant bio-stimulator fertilizers can be applied in integrated plant management (IPM) in forest nurseries
Autorzy:
Tkaczyk, M.
Nowakowska, J.A.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/38586.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2015, 57, 4
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibility of Detecting Species from the Phytophthora Genus in the Rhisosphere Soil of oak Trees Using Visual Crown Assessment
Autorzy:
Tkaczyk, M.
Milenković, I.
Kubiak, K. A.
Powiązania:
https://bibliotekanauki.pl/articles/213621.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
Phytophthora
oak decline
soil
rhizosphere soil
Opis:
This paper explains biological background of the project. Oak decline in Polish stands in recent years has become a serious problem. Symptoms of disease like thinning crowns, yellowing of the leaves or the appearance of dark exudates on the trunks are observed. Such symptoms are characteristic for pathogenic organisms of the genus Phytophthora. Identification and confirmation of the presence of these pathogens is difficult. That is why we have tried to estimate the presence of pathogens in the rhizosphere soil in oak stands on the basis of visual assessment of crowns trees with symptoms typical of Phytophthora infection.
Źródło:
Prace Instytutu Lotnictwa; 2014, 4 (237) December 2014; 92-101
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł

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