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Wyświetlanie 1-15 z 142
Tytuł:
Isolation and Identification of Proteins From Potato Leaves
Autorzy:
Szajko, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2199681.pdf
Data publikacji:
2017-06-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
leaf proteomes
potato
protein profiles
Opis:
Potato leaves are a very convenient material to compare the differences in potato proteomes. Prote-ins isolation depends on the type of analysis. The method of isolation of proteins from potato leaves, 2D electrophoresis and liquid chromatography–tandem mass spectrometry (LC-MS/MS) were descri-bed in detail.
Źródło:
Plant Breeding and Seed Science; 2017, 75; 29-36
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Total RNA quality in boar spermatozoa with different freezability
Autorzy:
Fraser, L.
Brym, P.
Mogielnicka-Brzozowska, M.
Wasilewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/2087601.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
boar
spermatozoa
semen freezability
RNA profiles
Źródło:
Polish Journal of Veterinary Sciences; 2019, 1; 181-185
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problem of profile matching in sphericity measurements by the radial method
Autorzy:
Janecki, D.
Adamczak, S.
Stępień, K.
Powiązania:
https://bibliotekanauki.pl/articles/221170.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sphericity
measurement
profiles
matching
mathematical model
Opis:
At the Kielce University of Technology a new concept of accurate measurements of sphericity deviations of machine parts has been developed. The concept is based upon measurement of roundness profiles in many clearly defined cross-sections of the workpiece. Measurements are performed with the use of typical radial measuring instrument equipped with a unit allowing accurate positioning of the ball. The developed concept required finding a solution to numerous problems relating to the principle of the radial measurement. One of the problems to be solved was matching of measured roundness profiles. The paper presents an outline of the developed concept of sphericity measurement, a mathematical model of profile matching and results of the verification of the model.
Źródło:
Metrology and Measurement Systems; 2012, 19, 4; 703-714
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metamorphoses of resonance curves in systems of coupled oscillators
Autorzy:
Kyzioł, J.
Okniński, A.
Powiązania:
https://bibliotekanauki.pl/articles/279900.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
coupled oscillators
amplitude profiles
singular points
Opis:
We study dynamics of two coupled periodically driven oscillators in a general case and compare it with two simplified models. Periodic steady-state solutions to these system equations are determined within the Krylov-Bogoliubov-Mitropolsky approach. Amplitude profiles are computed. These two equations, each describing a surface, define a 3D curve – intersection of these surfaces. In the present paper, we analyse metamorphoses of amplitude profiles induced by changes of control parameters in three dynamical systems studied. It is shown that changes of the dynamics occur in the vicinity of singular points of these 3D curves.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1197-1204
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polish clusters and European clusters – differences in the mechanisms of their creation and functioning
Autorzy:
Winiarski, J.
Powiązania:
https://bibliotekanauki.pl/articles/348237.pdf
Data publikacji:
2017
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
cluster
research on clusters
cluster profiles
Opis:
As the significance of clusters has been growing, it is important to focus on the issues related to the mechanisms of their creation and functioning. The purpose of the article is to present the specific character of Polish clusters by comparing them with European clusters on the basis of the literature study and the author’s own research.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2017, 2; 151-164
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Long gravity waves in a canal with a corrugated bottom in the asymptotic description
Autorzy:
Bielski, Włodzimierz
Wojnar, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/1839674.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
bottom profiles
homogenization approach
effective depth
Opis:
We consider the classic Lagrange long gravitational wave of a homogeneous incompressible fluid in a shallow canal with a corrugated bottom. We use the asymptotic expansion method to find the effective depth of a one-dimensional canal and, hence, the effective wave velocity. A flow in a two-dimensional tank with a corrugated bottom is also studied by this method.
Źródło:
Journal of Theoretical and Applied Mechanics; 2021, 59, 3; 443-454
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Predictive modeling in a VoIP system
Autorzy:
Simionovici, A. M.
Tantar, A. A.
Bouvry, P.
Didelot, L.
Powiązania:
https://bibliotekanauki.pl/articles/308590.pdf
Data publikacji:
2013
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
particle algorithms
prediction
user-profiles
VoIP
Opis:
An important problem one needs to deal with in a Voice over IP system is server overload. One way for preventing such problems is to rely on prediction techniques for the incoming traffic, namely as to proactively scale the available resources. Anticipating the computational load induced on processors by incoming requests can be used to optimize load distribution and resource allocation. In this study, the authors look at how the user profiles, peak hours or call patterns are shaped for a real system and, in a second step, at constructing a model that is capable of predicting trends.
Źródło:
Journal of Telecommunications and Information Technology; 2013, 4; 32-40
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tectonostratigraphic model of the Late Cretaceous inversion along the Nowe Miasto–Zawichost Fault Zone, SE Mid-Pol ish Trough
Autorzy:
Krzywiec, P.
Gutowski, J.
Walaszczyk, J.
Wróbel, G.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/2059119.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
tectonostratigraphic model
Mid-Polish Trough
seismic profiles
Opis:
The Cenozoic tectonic evolution of the Polish Platform reflects repeated changes in loading condi tions at the Al pine–Carpathian and Arctic–North Atlantic margins of the European continent. After the Late Cretaceous–Paleocene main phase of the Mid-Polish Basin inversion, a second phase of limited uplift of the Mid-Polish Swell occurred during the Middle–Late Eocene. End Eocene and Early Oligocene subsidence of narrow grabens on the Fore-Sudetic Monocline was coeval with normal fault ing in the East Alpine foredeep basin and the development of the Central European rift system. At the sametime the Outer Carpathian flysch basins were rearranged, presumably in response to the build-up of compressional stresses at crustal levels, whilst subsidence and erosion patterns changed in the Carpathian Foreland from being dominated by the NW–SE trending Mid-Pol ish Swell to being controlled by the development of the W–E trending Meta-Carpathian Swell. At the end of the Oligocene the Fore-Sudetic graben system propagated into the area of the Trans-European Suture Zone and the Sudetes and remained active during the Early and Middle Miocene. This was paralleled by intensified subduction activity and thrusting of the Carpathians and the development of their flexural foredeep basin. A short early Sarmatian episode of basement in volving transpression along the SW margin of the Mid-Pol ish Swell correlates with the termination of north-directed nappe transport in the Outer Carpathians. This was followed by eastward migration of the subsidence centre of the Carpathian Foredeep Basin and the gradual termination of tectonic activity in the grabens of the Polish Lowlands. After a period ofpost-orogenic relaxation the present-day compressional stress regime built up during the Pliocene and Quaternary. Intensified ridge push forces exerted on the Arctic–North Atlantic passive margins contribute to this compressional stress field that is dominated by collision-related stresses reflecting continued indentation of the Adriatic Block. This sequence of events is interpreted in terms of changing tectonic loads in the Carpathians, Alps and at the NW passive margin of Europe. The complex and diachronous interaction of mechanically coupled and uncoupled plates along collision zones probably underlies the temporally varying response of the Carpathian Foreland that in addition was complicated by the heterogeneous structure of its lithosphere. Progressively increasing ridge push on the passive margin played a secondary role in the stress differentiation of the study area.
Źródło:
Geological Quarterly; 2009, 53, 1; 27-27
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Eksperymentalna weryfikacja obliczeń numerycznych procesu wyciskania profili aluminiowych w podwyższonych temperaturach
Experimental verification of numerical simulation of aluminium profiles extrusion at temperatures just below melting point
Autorzy:
Piwnik, J.
Skorulski, G.
Powiązania:
https://bibliotekanauki.pl/articles/270926.pdf
Data publikacji:
2010
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
wyciskanie profili na gorąco
aluminium profiles extrusion
Opis:
W niniejszej pracy pokazano i przedyskutowano kilka aspektów odnośnie dokładności metod teoretycznych i doświadczalnych w odniesieniu do analizy numerycznej skomplikowanego procesu wyciskania profili na gorąco. Podkreślono, że odpowiednie założenia odnośnie modelu lepko-plastycznego mają zasadniczy wpływ na otrzymywane wyniki. Najlepszą drogą weryfikacji wyników numerycznych jest przeprowadzenie badań doświadczalnych na materiałach zastępczych, a jeszcze lepiej na rzeczywistych stopach aluminium. W pracy pokazano zatem wyniki własnych badań modelowych i analizy numerycznej. Zaproponowano także wyposażenie stanowiska badawczego wraz ze schematem analizy rozpatrywanego problemu.
The accuracy of some experimental and theoretical methods with respect to numerical analysis based on finite elements has been discussed in this paper. It has been suggested, that assumption about visco-plasticity model has been determined the results of numerical analysis, where complicated process of hot extrusion takes place. The best way to verify the accuracy of numerical analysis is preparing experimental researches. The substitute material or much better - real material should be used to confirm the precision and usefulness of numerical simulation to obtain pressure distribution in symmetric and non - symmetric extrusion processes. Some results of modelling experiments and numerical analysis has been presented as well. Moreover, the experimental equipment to use with 140T press has been proposed in this paper.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2010, 15, 2; 107-112
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estrogen deprivation induces lipid profile impairment but not cardiac dysfunction in ovariohysterectomized dogs
Autorzy:
Boonyapakorn, C.
Punyapornwithaya, V.
Sawatphakdee, G.
Poolsawat, N.
Pongkan, W.
Powiązania:
https://bibliotekanauki.pl/articles/2087965.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dog
estragon
ovariohysterectomy
cardiac function
lipid profiles
Źródło:
Polish Journal of Veterinary Sciences; 2020, 23, 4; 521-528
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Raw Extract of Hybanthus enneaspermus (L.) F. Muell. on the Fertility Test in Female Mice (Mus musculus L)
Autorzy:
Chandru, G.
Jayakumar, Kaliyamoorthy
Navaneethakannan, D.
Powiązania:
https://bibliotekanauki.pl/articles/1182814.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Biochemical and Hematological profiles
Hybanthus enneaspermus
estrogenic effect
Opis:
Hybanthus ennespermus (L.) (Violaceae) has no toxicity asper the earlier reports of fertility traditional medicine used by the tribal people of Grizzled Giant Squirrel Wildlife Sanctuary, Srivilliputur, Southern India. In the present study, fertility effect of Hybanthus enneaspermus (Violaceae) whole part of plant evaluated in adult female mice (Mus musculus). Raw extract of Hybanthus enneaspermus (REHE) was administered orally at the doses of 100 mg/kg body weight for a duration of 30 days and normal salinw (0.9%) to control groups. There were no significance changes in the body weight (P<0.05). The Possibility of marked increase in serum estradiol level (P<0.05) significantly. Administered of REHE in mice did not show any variation in the hematological and biochemical parameters. It is raw extract of Hybanthus enneaspermus (REHE) showed on above result indicated that this alcoholic free extract of Hybanthus ennaespermus confirm the fertility effect of above study.
Źródło:
World Scientific News; 2017, 65; 160-170
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Mšeno-Roudnice Basin: problems of reconstruction of fossil stream pattern (Central Bohemian Coal Basins, Czech Republic)
Autorzy:
Skopec, J.
Pesek, J.
Kobr, M.
Powiązania:
https://bibliotekanauki.pl/articles/1204888.pdf
Data publikacji:
2002
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
seismic profiles
ancient river valleys
Mšeno-Roudnice Basin
Opis:
The Mšeno-Roudnice Coal Basin is an eastern part of the Central Bohemian Carboniferous Coal Basins. The total thickness of the Carboniferous sediments is ranging from several tens of metres in the south up to nearly 1 km in the basin centre. The basin was explored by nearly 55 deep boreholes with the aim to explore coal reserves. The seismic exploration in the basin has been carried out, too. Fossil stream pattern was reconstructed, of which rivers eroded the upper part of the Slaný Formation sediments during the intra-Stephanian hiatus between the Slaný and Líně Formation (Stephanian B/C). The project could have been realized due to some drilling close to seismic profiles, and also at least due to locally favourable seismological conditions. The results allowed to decipher the anomalous depositional structure of the Slaný and Líně formations that was difficult to be defined earlier. The results showed that some tectonic movements occurred towards the end of the Stephanian B which resulted in giving rise of erosional activity of ancient streams.
Źródło:
Polish Geological Institute Special Papers; 2002, 7; 229-236
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Developments of employment by broad age-groups in Poland in the years 1998–2008. Do their determinants differ?
Autorzy:
Grabowska, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/418251.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
employment profiles
age groups
employment determinants
work ability.
Opis:
The latest Eurostat projections show that both population and labour force ageing change employment profiles by age in the European Union countries even in case of an increase in labour force participation and employment (The 2012 Ageing Report). My research question is how basic individual (such as age, education, household position, place of residence) and contextual characteristics (such as the business cycle and the regional labour market situation) influence on employment opportunities in Poland. I test whether the impact of different factors varies with age, which has been categorized to reflect different stages of the life course: youth and young adults (15–29 years old), prime aged (30–54 years old), and older workers (for women: 55–59, for men: 55–64). To answer the research question three types of multilevel logistic models were applied: (a) general models with age as one of the basic determinants, (b) models for each age group for non-agriculture and agriculture. The data used come from the Polish Labour Force Survey (BAEL) of the years 1998–2008 and regional labour market data. The analysis reveals that there are differences in influence of individual and context variables on employment odd ratios between age groups, sex and employment sectors.
Źródło:
Studia Demograficzne; 2014, 165, 1; 55-81
0039-3134
Pojawia się w:
Studia Demograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Simultaneous Occurrence of Logarithmic and S-Shaped Velocity Profiles in Gravel-Bed River Flows
Autorzy:
Franca, M. J.
Lemmin, U.
Powiązania:
https://bibliotekanauki.pl/articles/241179.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
field measurements
gravel-bed river flows
velocity profiles
Opis:
Based on Acoustic Doppler Velocity Profiler (ADVP) field measurements, we discuss velocity profiles observed in two shallow gravel-bed rivers with low relative submergence. In these flows, log-shaped profiles and s-shaped profiles simultaneously exist, indicating the possibility of 3D flow inside the roughness layer. A quasi-2D layer is generally found in an intermediate region of the flow above the roughness layer. Therefore a best-fit log-law approach may lead to estimates of a roughness parameter which are reasonably correlated with the local flow resistance. However, above a certain limit of the ratio roughness/water depth (∼0.6 from our measurements), the velocity distribution in the lower regions predominantly corresponds to an s-shaped profile.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2009, 56, 1-2; 29-41
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Possibility of Obtaining Aviation Profiles from 7039 Aluminum Alloy in the Extrusion Process
Autorzy:
Pawłowska, Beata
Powiązania:
https://bibliotekanauki.pl/articles/175941.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
backward extrusion
aluminum alloys
extrusion profiles
7039 alloy
Opis:
This article presents the process of extrusion shape of complex geometry cross-sectional 7039 aluminum alloy for use in aerospace industry. This study aims to characterize the properties of aluminum alloy as structural material and to determine the technological parameters of the indirect extrusion press and their influence on mechanical properties and the microstructure of the final product. It has been proved that the proper choice of parameters in the case of a specific profile extruded from 7039 aluminum alloy allows the manufacturing of products of complex cross-sections and the quality required in aerospace industry.
Źródło:
Advances in Manufacturing Science and Technology; 2020, 44, 2; 46-50
0137-4478
Pojawia się w:
Advances in Manufacturing Science and Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 142

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