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Tytuł:
Starzenie się społeczeństwa polskiego wyzwaniem dla zrównoważonego rozwoju
Aging of the polish society as a challenge to sustainable development
Autorzy:
Adamczyk, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/321990.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
starzenie się społeczeństwa
zmiany demograficzne
rozwój zrównoważony
population ageing
demographic changes
sustainable development
Opis:
Celem artykułu jest ukazanie starzenia się społeczeństwa polskiego w kontekście wyzwań, jakie niesie ten proces dla zrównoważonego rozwoju. Skoncentrowano się na problematyce starzenia się ludności w kontekście wybranych wskaźników zrównoważonego rozwoju: zdrowia publicznego i zmian demograficznych.
It is the objective of the article to show aging of the Polish society in the context of challenges presented by the process to sustainable development. It focuses on issues connected with aging of the population in the context of selected sustainable development ratios such as public health and demographic changes.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2017, 106; 105-113
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
With-Fracture Gurney Model to Estimate both Fragment and Blast Impulses
Autorzy:
Hutchinson, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/358683.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
Gurney
Taylor
casing
fracture
explosive
Opis:
Work to extend Gurney’s model for fragment velocity to predict blast impulse is ongoing by means of analytical calculations, based on gas and casing dynamics, with comparisons to available experimental data. The issue of early case fracture, with release of explosive gases thus retaining a greater degree of momentum, is also addressed. The method is based on that of G.I. Taylor and can include both case material compressive fow stress and explosive properties such as Chapman-Jouguet pressure. Comparisons between this new Taylor-based theory and blast data from studies of cased charges are shown. The potential effects on blast output of casing dynamic material properties appear considerable. Dynamic testing of case metals is needed to confrm the yield stresses implied by the blast data. It is expected that this method will be useful to the researcher in a number of roles.
Źródło:
Central European Journal of Energetic Materials; 2010, 7, 2; 175-186
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kapitał ludzki jako źródło konkurencyjności państw członkowskich Unii Europejskiej
Human capital as a source of competitiveness of European Union member states
Autorzy:
Kowalewska, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/842991.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Opis:
The purpose of the article was to present the essence of competitiveness and human capital from the macroeconomic perspective, as well as to present human capital as a source of competitiveness of the European Union member states. In order to assess the human capital of the member states, the level of education of residents, as well as calculated synthetic indicator of human capital were analysed. In addition, relationship between the level of the indicator of human capital and competitiveness of the member states, measured by GDP per capita was examined.
Źródło:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego. Ekonomika i Organizacja Gospodarki Żywnościowej; 2014, 107
2081-6979
Pojawia się w:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego. Ekonomika i Organizacja Gospodarki Żywnościowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sustainable logistics as a source of competitive advantage in remote locations
Autorzy:
Helm, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/2140955.pdf
Data publikacji:
2018
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
sustainability
logistics
remote locations
sources of competitive advantage
Opis:
Governments, corporations, and other organizations are expanding further into remote locations, such as polar regions, space, and other relatively inaccessible areas with minimal development. However, with this increased interest in remote areas, there is a shortage of scholarly work to draw upon for operating in these regions. Therefore, this presents an opportunity to fill an academic gap, and the article asks, ‘How can sustainability be a source of competitive advantage for logistics in remote locations?’ To explore this question and to serve as a resource for future researchers, the article defines key terms, utilizes an interdisciplinary framework by integrating the academic disciplines of business and sustainability, and supplies a detailed literature review. From this groundwork, the article follows a qualitative methodology whereby three hypotheses emerge. The research results offer that sustainability can be a source of competitive advantage for logistics in remote locations by: sustainable logistics innovation; reducing, reusing, and recycling; and optimizing supply networks. Finally, the article closes with a discussion and summary, by recognizing research limitations and by contributing recommendations for future dialogue and research.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2018, 3, 3; 6-26
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peculiarities of the operation of the oil pipeline in the process of its cleaning from paraffin deposition
Autorzy:
Serediuk, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/1818782.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
pipeline capacity
mechanical cleaning method
cleaning device
hydrodynamic calculations
plug formed by paraffin deposition
viscoplastic fluid
specific electricity consumption
wydajność
rurociąg
oczyszczanie mechaniczne
urządzenie czyszczące
zatyczka
parafina
płyn lepkoplastyczny
zużycie energii elektrycznej
Opis:
Purpose: Improving the technology of cleaning the inner surface of the main oil pipelines from paraffin deposition by specifying the hydrodynamic parameters of the movement of the cleaning device in the cavity of the pipeline, by more accurate prediction of the time of its approach to the final point of purification. Design/methodology/approach: Performing theoretical researches and application of mathematical modelling methods in order to establish the regularities of the cleaning device movement in the oil pipeline. Findings: Regularities of changes in the capacity of the pipeline, the speed of the cleaning process, the specific energy consumption for oil transportation as a function of the linear coordinates of the place and time of the cleaning device movement in the pipeline were established. Research limitations/implications: The next stage of research is to establish the influence of the characteristics of the viscoplastic fluid of the paraffin plug on the additional resistance and the mode of the cleaning device movement in the pipeline. Practical implications: It was developed the method that allows predicting the capacity and energy efficiency of the pipeline operation for each point in time of the process of cleaning from paraffin deposition. Originality/value: The originality of the method is the taking into account the additional hydraulic resistance of the paraffin plug and the available energy resources of oil pumping stations on the hydrodynamic process of moving the cleaning device in the oil pipeline.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2021, 106, 2; 77--85
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of hydrodynamic calculation oil pipeline sequential transportation of small batches of various oil
Autorzy:
Serediuk, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/24200581.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
sequential pumping
small batches of oil
contact zone
route profile
throughput
specific electricity consumption
pompowanie sekwencyjne
małe partie oleju
strefa kontaktu
profil trasy
przepustowość
jednostkowe zużycie energii elektrycznej
Opis:
Purpose: To improve the technologies of different oil types of sequential pumping through the pipeline by establishing the laws of changing the throughput and energy efficiency of the oil pipeline operator in the process of pumping and displacing oil batches. The identified regularities would contribute to more effective management of the mixture realisation process at the end of the oil pipeline and reliable forecasting of the results of the different oil types of mixture formation. Design/methodology/approach: Carrying out theoretical studies and applying mathematical modelling methods in order to establish the regularities of hy-drodynamic processes during the injection into the oil pipeline and the displacement of oil different grades from it. Findings: The regularities of changes in oil pipeline capacity and specific electricity costs for transportation as a function of the coordinates of different oil types of batches contacts and the time of sequential pumping cycle implementation they have been established. Research limitations/implications: The next stage of the research is to establish the influence of the hydrodynamic processes features on the intensity of the oil different grades mixture formation in the process of their successive pumping in the oil pipeline. Practical implications: A method and software have been developed that make it possible to predict the throughput and energy efficiency of oil pipeline operation for each moment of the sequential pumping cycle of small batches of different grade oil. The application of the method for the conditions of an operating oil pipeline proved that during the cycle of four types of sequential oil pumping, the change in throughput exceeds 20%, and the change in energy consumption exceeds 10%. Originality/value: The originality of the method consists in taking into account the regularities of the hydrodynamic process of the movement of several batches of oil of different grades in the pipeline, the features of the profile of the pipeline route and the physical properties of the liquid that fills the cavity of the pumps.
Źródło:
Archives of Materials Science and Engineering; 2022, 117, 1; 25--33
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of selected landfill impacts on selected segments of the environment – a case study
Ocena oddziaływania wybranego składowiska odpadów na środowisko – studium przypadku
Autorzy:
Vaverková, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/28765669.pdf
Data publikacji:
2023
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Acta Scientiarum Polonorum. Architectura; 2023, 22; 38-49
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Raport bałkański II : seryjny kołowy pojazd opancerzony wypróbowuje swoją wartość w warunkach macedońskiej zimy
Autorzy:
Morton, M. D.
Powiązania:
Przegląd Informacyjno-Dokumentacyjny Centralny Ośrodek Naukowej Informacji Wojskowej, 1997, nr 1, s. 34-41
Współwytwórcy:
Pawłowski, Tomasz. Opracowanie
Data publikacji:
1997
Tematy:
NATO misje wojskowe Macedonia
Pojazdy opancerzone NATO Macedonia
Siły zbrojne międzynarodowe wyposażenie Macedonia
Siły Implementacyjne (IFOR) wyposażenie Macedonia
Opis:
Oprac. art. zamieszcz. w "Armor". --- 1996, lipiec-sierpień.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Wirtualizacja łańcuchów dostaw
Virtualization of supply chains
Autorzy:
Dobrzyński, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/399006.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
organizacja wirtualna
wirtualizacja SCM
analiza neuromarketingu
virtual organization
SCM virtualization
website neuroscience analysis
Opis:
The term "virtual organization" has emerged in practice and management theory in the early nineties of the twentieth century. This concept does not have a uniform definition. It is dominated by two main approaches: procedural and structural. The first approach refers to the operations and activities of the organization (processes), and the second focuses on the structure of the organization, its components and interconnections among these elements. A continuous evolution of this concept is also the result of the lack of a uniform definition of the organization as well as economic and business practices associated with the use of such structures. The aim of this paper is to present the author's research results in the diagnosis of the current situation and proposals to implement the concept of virtual supply chains in online stores.
Źródło:
Ekonomia i Zarządzanie; 2011, 3, 4; 50-62
2080-9646
Pojawia się w:
Ekonomia i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja operacji transportowych
Optimization of transport operations
Autorzy:
Dobrzyński, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/399118.pdf
Data publikacji:
2010
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
operacje transportowe
optymalizacja kosztów transportu
zarządzanie zasobami
transport operations
optimization of transportation costs
management of resources
Opis:
Freight market passenger cars in Poland is highly competitive. A large number of competitors makes it a competitive advantage to determine even small differences in prices of transport services offered. In this article author's goal is to develop methods to optimize the cost of transport operations in the selected company. Objective was achieved through the analysis of the logistics chain (transport) in the company's proposal Adampol SA and optimizing of loading and unloading operations, leading to lower their costs.
Źródło:
Ekonomia i Zarządzanie; 2010, 2, 4; 31-38
2080-9646
Pojawia się w:
Ekonomia i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy integral of the Stokes flow in a singularly perturbed exterior domain
Autorzy:
Riva, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/255971.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
boundary value problem for Stokes system
singularly perturbed exterior domain
real analytic continuation in Banach space
Opis:
We consider a pair of domains Ωb and Ωs in Rn and we assume that the closure of Ωb does not intersect the closure of ε Ωs for ε ∈ (0, ε 0). Then for a fixed ε ∈ (0, ε0)we consider a boundary value problem in Rn\ (Ωb ∪ εΩs) which describes the steady state Stokes flow of an incompressible viscous fluid past a body occupying the domain Ωb and past a small impurity occupying the ε Ωs. The unknown of the problem are the velocity field u and the pressure field p, and we impose the value of the velocity field u on the boundary both of the body and of the impurity. We assume that the boundary velocity on the impurity displays an arbitrarily strong singularity when ε tends to 0. The goal is to understand the behaviour of the strain energy of (u, p) for ε small and positive. The methods developed aim at representing the limiting behaviour in terms of analytic maps and possibly singular but completely known functions of ε, such as ε-1, log &epsilon.
Źródło:
Opuscula Mathematica; 2012, 32, 4; 647-659
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study on the influence of the discretisation unit on the effectiveness of modelling currency exchange rates using the binary-temporal representation
Autorzy:
Stasiak, M. D
Powiązania:
https://bibliotekanauki.pl/articles/406673.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
foreign exchange market
technical analysis
decision support for currency market investment
modelling of currency exchange rates
Opis:
An exchange rate can be expressed in the form of a binary-temporal representation. Such a representation is based on a discretization of movements in the exchange rate, in which to each change in the value - equal to a given discretization unit – two parameters are allocated: a binary value, consistent with the direction of change in the exchange rate (increase 1, decrease 0) and duration. Statistical examination proves the existence of dependencies between the parameters of previous changes and the direction of future changes. To model the exchange rate using the applied binary-temporal representation, an appropriate model was developed that enables estimation of the probability of the direction of future changes in the currency exchange rate based on the parameters of historical changes. This article presents an analysis of the influence of the chosen discretization unit on the quality of exchange rate modelling. For this purpose, software was written in MQL4 and C++. As a result of the study, an optimal value for the discretization unit and the optimal parameters of the model providing the highest efficiency were determined. The input data used in the analysis involved tick data for the AUD/NZD exchange rate for a five-year time frame 2012–2017.
Źródło:
Operations Research and Decisions; 2018, 28, 2; 57-70
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bridge carrying robot using ZigBee carrying multiple sensor
Autorzy:
Reddy, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/411577.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ZigBee
microcontroller
Light-dependent resistor (LDR)
Opis:
MULTI-UTILITY VEHICLE is a vehicle which carries a folding bridge and multiple sensors. This vehicle is mainly used in war-field, it helps the soldiers to cross The un-even areas with the help of the bridge. It also helps other heavy vehicles to cross the disturbed path using its bridge. It is also equipped with multiple sensors like the fire detector, gas detector, light detector. This helps the soldiers to identify the different types of threats bearing poisonous gases, increase in temperature etc. from a longer distance. Those threats can be recognized by the soldiers with the help of buzzers equipped in the detector. As it is a remote vehicle which works on the wireless transmission of ZigBee, the light detector in the vehicle is used to automatically switch on the main lights when the visibility level starts decreasing due to sunlight. This project is already implemented in European countries during the First World War. It is an upcoming technology in our country. For solving the problem of the cooperation between multi-robots, a communication system based on the ZigBee network was designed. In the hardware of the robots, the ZigBee nodes are introduced. The multi-robots form a star network by the ZigBee nodes, and they keep communication with each other by the central node. The ZigBee network has many characteristics such as low cost, low power consume, strong anti-jamming ability and real-time performance etc, it adapts to the application of intelligence. Experiments showed that the communication between the robots is reliable. This scheme is a good way for robots to complete complex task and improve working efficiency.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2015, 41; 1-14
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bezpieczne zagospodarowanie odpadów więźby dachowej
Safe management of wastes from the timber roof truss
Autorzy:
Kajda-Szcześniak, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/357536.pdf
Data publikacji:
2015
Wydawca:
Politechnika Śląska
Tematy:
roof truss
impregnate
fuel properties
waste management
więźba dachowa
impregnaty
właściwości paliwowe
zagospodarowanie
Opis:
The article presents characteristics of fuelling properties and elemental composition of the combustion mass of the wastes from post-consumed timber. Two wasted timber roof truss elements were tested. The wastes came from the works related to the repair of the roof of approximately 50 years old house (WD1) and the construction of a new detached house (WD2). These wastes belong to the group of dangerous wastes due to their charges with chemical substances, i.e. timber protection agents. For the products these substances fulfil the role of preservatives of wood against fungi, mould, moss and algae. Tests were performed in order to determine possibilities of safe management of the discussed wastes.
W artykule przedstawiono charakterystykę właściwości paliwowych i składu elementarnego masy palnej odpadów drewna poużytkowego. Badaniami objęto dwa odpady więźby dachowej pochodzące z prac związanych z remontem dachu około 50cio letniego domu jednorodzinnego (WD1) oraz z budową nowego domu jednorodzinnego (WD2). Odpady te należą do grupy odpadów niebezpiecznych ze względu na obciążenia substancjami chemicznymi tj. środkami ochrony drewna. Substancje te w produktach pełnią funkcję impregnatów mających na celu ochronę drewna m.in. przed grzybami, pleśniami, mchami oraz glonami. Badania przeprowadzono w celu określenia możliwości bezpiecznego zagospodarowania omawianych odpadów. Odpady cechuje wartość opałowa mieszcząca się w przedziale od 17,38 MJ/kg dla odpadu WD2 do 18,95 MJ/kg dla odpadu WD1. Uzyskana wilgotność nie przekracza 9%, a zawartość popiołu odnotowano na poziomie poniżej 1% dla obu badanych odpadów.
Źródło:
Archiwum Gospodarki Odpadami i Ochrony Środowiska; 2015, 17, 4; 21-28
1733-4381
Pojawia się w:
Archiwum Gospodarki Odpadami i Ochrony Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A peculiar faunivorous metatherian from the early Eocene of Australia
Autorzy:
Beck, R.M.D.
Powiązania:
https://bibliotekanauki.pl/articles/945605.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Mammalia
Metatheria
Marsupialia
Sparassodonta
Archaeonothos henkgodthelpi
new species
Eocene
fossil
deposit
paleontology
Australia
Opis:
I describe Archaeonothos henkgodthelpi gen. et. sp. nov., a small (estimated body mass ~40–80 g) tribosphenic metatherian from the early Eocene Tingamarra Fauna of southeastern Queensland, Australia. This taxon, known only from a single isolated upper molar (M2 or M3) is characterised by a very distinctive combination of dental features that, collectively, probably represent faunivorous adaptations. These include: a straight, elevated centrocrista; a metacone considerably taller than the paracone; a wide stylar shelf (~50% of the total labiolingual width of the tooth); reduced stylar cusps; a long postmetacrista; a small and anteroposteriorly narrow protocone; an unbasined trigon; and the absence of conules. Some of these features are seen in dasyuromorphians, but detailed comparisons reveal key differences between A. henkgodthelpi and all known members of this clade. A. henkgodthelpi also predates recent molecular estimates for the divergence of crown-group Dasyuromorphia. Similar dental features are seen in a number of other metatherians, including the South American sparassodonts, Wirunodon chanku from the ?middle–late Eocene Santa Rosa local fauna of Peru, and Kasserinotherium tunisiense from the early Eocene Chambi fauna of Tunisia, although whether A. henkgodthelpi is closely related to any of these taxa is unclear based on available evidence. I therefore refer A. henkgodthelpi to Metatheria incertae sedis. Potential relatives of A. henkgodthelpi are unknown from any other Australian fossil deposit.
Źródło:
Acta Palaeontologica Polonica; 2015, 60, 1; 123-129
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recurrent Method for Blocking Probability Calculation in Switching Networks with Overflow Links
Autorzy:
Głąbowski, M.
Stasia, M. D.
Powiązania:
https://bibliotekanauki.pl/articles/307836.pdf
Data publikacji:
2013
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
intersection links
switching networks
Opis:
This article presents a new recurrent method for modelling multi-service switching networks with overflow links. In the proposed method, the blocking probability for a given stage of the switching network is determined on the basis of the characteristics of the preceding stage. A particular attention is given to a possibility of a considerable reduction of the internal blocking probability of the switching network that would result from an application of additional overflow links between neighbouring switches of the first stage of the network. The results of the analytical modelling of selected multi-service switching networks with overflow links in the first stage are compared with the results of the simulation experiments. The study confirms the accuracy of all the adopted theoretical assumptions in the proposed analytical model of the multi-service switching network.
Źródło:
Journal of Telecommunications and Information Technology; 2013, 1; 56-64
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ERF022 controls somatic embryogenesis in Arabidopsis via ethylene-related mechanism
Autorzy:
Nowak, K.
Gaj, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/80300.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
gene encoding
transcription factor
somatic embryogenesis
ERF022 gene
Arabidopsis
expression pattern
tf gene
plant stress
ethylene biosynthesis
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High activity of auxin response factors (ARF5, ARF6, ARF10 and ARF16) in somatic embryogenesis of Arabidopsis
Autorzy:
Wojcikowska, B.
Gaj, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/80554.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
high activity
auxin response factor
indole-3-acetic acid
somatic embryogenesis
Arabidopsis
somatic cell
zygotic embryogenesis
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Auxin-related functions of LEAFY COTYLEDON2 gene in the induction of somatic embryogenesis in Arabidopsis
Autorzy:
Wojcikowska, B.
Gaj, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/951295.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
somatic embryogenesis
Arabidopsis
transcription factor
zygotic embryogenesis
leafy cotyledon2
gene expression
auxin response factor
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biodegrability of Bioplastic Materials in a Controlled Composting Environment
Autorzy:
Vaverková, M. D.
Adamcová, D.
Powiązania:
https://bibliotekanauki.pl/articles/124719.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
biodegradation
composting
waste treatment
controlled environment
bioplastic
sponge cloth
Opis:
The objective of this study was to determine the biodegradability of bioplastic materials – sponge cloths – available on the European market that are labeled as 100% biodegradable but not certified as compostable. The test was carried out in a controlled composting environment. The project length was 22 weeks. The emphasis was put on discovering whether the sponge cloths are biodegradable or not. Based on the results thereof it can be concluded that sponge cloths have not decomposed completely but their color has changed and that degradation and physical changes occurred. Samples A1, and A2 have not decomposed completely and exhibited very slow degradation rate. Sample B5 exhibited the highest degradation rate. Samples B3, B4 exhibited high degree of decomposition. The main conclusion from this study is that biodegradation of bioplastics materials strongly depends on both the environment in which they are placed and the chemical nature of the material.
Źródło:
Journal of Ecological Engineering; 2015, 16, 3; 155-160
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of landfill leachate pollution: findings from a monitoring study at municipal waste landfill
Autorzy:
Vaverková, M. D.
Adamcová, D.
Powiązania:
https://bibliotekanauki.pl/articles/125392.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
groundwater monitoring
leachate monitoring
municipal solid waste landfill
surface water
water monitoring
Opis:
The monitoring that was carried out at the landfill specialized in leachate, groundwater and surface water. There were 6 sampling sites. The observed parameters were pH, BOD5, CODCr, conductivity. Leachate reached the high values in all observed parameters. Groundwater samples were collected at two monitoring wells and the sampling site (A, B, C). Surface water was collected from two sampling sites (D, E). The pH showed slightly acid values at all sampling points. The pH of surface water was slightly acid to neutral. Both BOD5 and CODCr values remained stable over the reporting period. The average conductivity value at sampling points D, E remained constant. In line with the Czech National Standard ČSN 75 7221 “Classification of Surface Water Quality” sampling point D belongs to II Water Quality Class – slightly polluted water and sampling site E to Class I water quality – unpolluted water. The authors believe that the fluctuations occurring with regard to the values of certain samples were not caused by the operation of the landfill itself, but were a result of the intense agricultural activity nearby the landfill.
Źródło:
Journal of Ecological Engineering; 2015, 16, 2; 19-32
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Taxonomic implications of morphometric analysis of earless seal limb bones
Autorzy:
Churchill, M.
Uhen, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/21910.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Fossil Phocidae (earless seals) are mostly known from isolated postcranial material, forcing researchers to rely upon humeri and femora for the diagnosis of taxa and reconstruction of phylogeny. However, the utility of these elements has never been rigorously tested. Here, we provide the first quantitative analysis of morphometric data from the humerus and femur, incorporating measurement data from all extant genera as well as several fossil taxa. Principle components analysis (PCA) found that genera clustered together on PC1 and PC2, although there was poor segregation of taxa and extensive overlap with genera in adjacent regions of the morphospace. Discriminant function analysis (DFA) was able to sort fossil taxa into different subfamilies, but performed poorly at lower taxonomic levels. A preliminary review of phylogenetic characters found that while some characters performed well at distinguishing different subfamilies, many characters were poorly defined and not quantified, possessed greater individual variation than past studies suggested, or were more variable in fossil taxa. Our analyses suggest that the utility of isolated humeri and femora for diagnosis of new taxa has been greatly exaggerated, and that extreme caution should be applied to interpretations of taxonomy of fossil material based on isolated elements. Future research should instead focus on study of associated skeletons and cranial material. A thorough revision of fossil phocid taxonomy is needed, and many described taxa are likely to be nomina dubia and of limited use in phylogenetic analysis.
Źródło:
Acta Palaeontologica Polonica; 2019, 64, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphogenic responses of Arabidopsis explants cultured in vitro in relation to the level of oxidative stress
Autorzy:
Kudelko, K.
Gaj, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/951273.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
morphogenic activity
Arabidopsis
explant
in vitro culture
oxidative stress
antioxidant activity
reactive oxygen species
somatic embryogenesis
immature zygotic embryo
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Armie Kastylii i Aragonii 1370-1516
Autorzy:
Pohl, John M. D. (1951- ).
Współwytwórcy:
Embleton, Gerry A. (1941- ). Ilustracje
Szadkowski, Paweł. Tłumaczenie
Firma Handlowo Usługowa NAPOLEON V, Dariusz Marszałek. pbl
Data publikacji:
2016
Wydawca:
[Oświęcim] : Wydawnictwo Napoleon V
Tematy:
Wojsko Hiszpania 14-16 w.
Opis:
Na okł. także logo wydawcy oryg.: Osprey Publishing.
Na s. red. błędny ISBN.
Bibliogr. s. 48-49. Indeks.
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Tea tree and wintergreen essential oils in the management of the invasive species Cortaderia selloana and Nicotiana glauca
Autorzy:
Ibanez, M.D.
Blazquez, M.A
Powiązania:
https://bibliotekanauki.pl/articles/65425.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The chemical composition of tea tree (Melaleuca alternifolia) and wintergreen (Gaultheria procumbens) essential oils as well as their phytotoxic effects against two invasive species – Cortaderia selloana and Nicotiana glauca – were studied. Fifty-eight compounds accounting for 98.89–99.94% of the total commercial tea tree and wintergreen essential oils were identified by Gas Chromatography-Mass Spectrometry (GC-MS) analysis. Tea tree essential oil with terpinen- 4-ol (28.37 ± 0.05%) followed by 1,8-cineole (15.81 ± 0.06%), γ-terpinene (15.60 ± 0.03%), α-pinene (10.92 ± 0.08%) and α-terpinene (8.52 ± 0.01%) as the main compounds did not produce significant effects against seed germination and hypocotyl growth of N. glauca, but showed significant effects in seed germination inhibition of C. selloana (34.69%) as well as in hypocotyl (60.96%) and radicle (62.55%) growth, at the highest dose (1 μl ⋅ ml–1) assayed. High amounts of methyl salicylate (99.63 ± 0.02%) were found in G. procumbens essential oil with remarkable phytotoxic effects in C. seollana. Methyl salicylate inhibited seed germination (77.38%) and hypocotyl and radicle growth (96.38% and 96.65%, respectively) at the highest dose (1 μl ⋅ ml–1) assayed. Wintergreen essential oil constitutes an eco-friendly alternative to control the high capacity of invasiveness of C. selloana.
Źródło:
Journal of Plant Protection Research; 2019, 59, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first possible remingtonocetid stem whale from North America
Autorzy:
Uhen, M.D.
Peredo, C.M.
Powiązania:
https://bibliotekanauki.pl/articles/2082285.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Mammalia
Archaeocete
Remingtonocetidae
middle Eocene
Castle Hayne Formation
North Carolina
USA
Opis:
Remingtonocetid cetaceans are a group of stem whales known from the Indo-Pakistan and North African Tethys Ocean. An unusual tooth was discovered by Peter J. Harmatuk in 1973 in the middle Eocene Superior Stone Quarry (now the Martin Marietta Quarry) near Castle Hayne, North Carolina, USA. Here we identify this tooth as a premolar of a possible member of the Remingtonocetidae, which would extend the range of this family across the Atlantic to eastern North America. This partial tooth includes most of the crown (missing the mesial end) and the posterior root. The tooth bears a single central cusp and a worn accessory cusp on the posterior end. This tooth most closely resembles premolars of Remingtonocetus and is rather dissimilar to premolars of other archaeocetes known from the middle Eocene of North America, such as the families Protocetidae and Basilosauridae. This new record potentially expands the geographic distribution of the amphibious cetacean family Remingtonocetidae across the Atlantic.
Źródło:
Acta Palaeontologica Polonica; 2021, 66, 1; 77-83
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MiR396 involvement in regulation of somatic embryogenesis in Arabidopsis
Autorzy:
Szczygiel-Sommer, A.
Gaj, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/80953.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
microRNA
biogenesis
gene expression
eukaryotic organism
hormone signalling
environmental stress
somatic embryogenesis
Arabidopsis
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowoczesne technologie dla systemów zdalnej edukacji
New technologies for distance learning systems
Autorzy:
Diarra, M.D.T.
Kaczmarek, J.
Powiązania:
https://bibliotekanauki.pl/articles/268369.pdf
Data publikacji:
2003
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Opis:
Internet staje się obecnie obszerną bazą wiedzy w nieomalże wszystkich dziedzinach. W przyszłości może się stać podstawowym źródłem materiałów do nauczania w szkolnictwie. Nierozwiązanymi problemami w tej dziedzinie są sposoby tworzenia i przechowywania danych oraz metody poszukiwania materiałów na ściśle określony temat. Obecnie istnieją międzynarodowe standardy do tworzenia materiałów edukacyjnych, które zostaną opisane w niniejszym artykule. W publikacji zostanie również przedstawiona całościowa koncepcja systemu typu e-learning. W koncepcji tej system jest rodzajem biblioteki materiałów dydaktycznych z różnych przedmiotów. Z założenia system taki może być wykorzystany nawet na terenie całego kraju. W chwili obecnej projektowany jest system dla nauczycieli w Mali (Afryka). Przedstawiona będzie analiza SWOT tego systemu. Zostaną opisane sposoby tworzenia obiektów edukacyjnych w oparciu o język XML. Zostaną również poruszone możliwości rozwiązania problemów zapisu, przechowywania i poszukiwania danych edukacyjnych z wykorzystaniem serwerów UDDI.
Internet becomes currently a broad base of knowledge in the majority of the fields. It could be, in the future, the fundamental source of the educational materials at school. In this field, however unsolved problems remain the way of creating and of storing data as well as methods of search of materials on a precise topic. There are currently international standards for the creation of educational object that is described besides in this article. In our publication, it will be also presented the whole system design in which, the system is a kind of digital library of didactic objects in various subjects. Such a system is supposed to be used on all the extent of the national territory. A system of assistance to the teacher of Mali (Africa), whose analysis SWOT is inserted in this article, is currently conceived. Based on the XML language, the methodology of creation of the educational objects will be described. The approaches or outlines of solutions to the problems of recording, storage and educational data retrieval by means of UDDI servers will be briefly analyzed.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2003, 19; 15-22
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Education Legitimates Income Inequality: Normative Beliefs in Early Post-Communist and Market-oriented Nations
Autorzy:
Evans, M.D.R.
Kelley, Jonathan
Powiązania:
https://bibliotekanauki.pl/articles/1790734.pdf
Data publikacji:
2017-12-30
Wydawca:
Polskie Towarzystwo Socjologiczne
Tematy:
education
human capital
pay equity
income justice
legitimate earnings
East Central Europe
communism
Opis:
Using data from large, representative national samples in in Poland, Hungary, Bulgaria, Australia, Finland, and the Netherlands, we examine moral norms about just rewards for education. Comparing these norms in East Central Europe shortly after Communism-where the dominant ideology was egalitarian, schooling free, rewards to education modest, and alternative investments absent-and in market-oriented societies where the opposite held, provides insight into the influence of institutional arrangements on moral norms. We find that the publics in all these countries favor large rewards for education (which legitimates substantial income inequality), showing that these moral norms are resilient to institutional arrangements. These results align with Aristotle’s claim that people believe job performance merits reward because it makes valuable contributions. They undermine alternative theories: credentialism, radical egalitarianism, and the hegemonic power of dominant political elites. These results also undermine economists’ human capital arguments insofar as they are seen as a moral justification for income inequality.
Źródło:
Polish Sociological Review; 2017, 200, 4; 441-463
1231-1413
2657-4276
Pojawia się w:
Polish Sociological Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant height and yield components of inbred isogenic and F1 hybrid Rht dwarf wheats
Autorzy:
Flintham, J E
Gale, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/2044459.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chemical hybridizing agent
F1 hybrid
wheat
plant height
grain yield
hybrid genotype
heterosis
alpha-amylase
enzyme activity
breeding programme
yield component
Rht allele
Opis:
Single and double-gene Rhtl, Rht2, Rht3, Rht1 + Rht2 and Rht3 + Rht2 isogenic lines of wheat in four parental rht varieties were grown in drilled yield trials at four sites in 1989. The same lines were also grown in 1988 together with hybrid genotypes from CHA (chemical hybridising agent) F₁ production plots. In the inbred lines shorter than one metre, Rht alleles reduced total shoot biomass by shortening the straw; mass of straw per unit plant height was unaffected. Highest grain yield was obtained from plant heights between 70 and 100 cm. The Rht genotype achieving this stature varied according to parent varietal height. The hybrids grown allowed comparisons between intra- and inter-varietal crosses over a range of Rht genotypes. In F₁ hybrids positive heterosis was observed for plant height, grain yield and mean grain weight. Highest yields were obtained from inter-varietal hybrids carrying one, two or three doses of Rht1 or Rht2 or one dose of Rht3. An Rht3lrht hybrid showed resistance to premature α-amylase production during grain ripening.
Źródło:
Journal of Applied Genetics; 1998, 39, 1; 73-83
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie emisji formaldehydu z wyrobów budowlanych metoda komorową z zastosowaniem techniki GC-MS-PT
Determination of formaldehyde emissions from construction products using chamber method and GC-MS-PT
Autorzy:
Nowacka, M D
Kaniowska-Klarzyńska, E.
Powiązania:
https://bibliotekanauki.pl/articles/1819416.pdf
Data publikacji:
2012
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
materiały budowlane
formaldehyd
technika GC-MS-PT
Opis:
Increased public awareness and concern for indoor air pollution health consequences for the internal environment, demand for building materials and items of equipment with low emission of organic compounds. Formaldehyde has been classified as toxic and carcinogenic category 1. Formaldehyde can cause allergies, conjunctivitis, cough, headache, and may cause irreversible changes in the risk of a health condition. In world there is still a lot of information on the toxicity of formaldehyde on the human body. The aim of the study was to evaluate the emission of formaldehyde and other compounds with a new analytical method with the identification. We demonstrated that GC-MS technique in combination with Purge & Trap (P&T) can be useful in the analysis of volatile organic compounds in building products containing synthetic resins. Described method applies techniques to enable the determination of formaldehyde is based on air samples in laboratory chambers, followed by absorption in water, concentrating in Purge & Trap device and analysis volatile organic compounds technique of gas chromatography with MS detection. The combination of GC-MS with Purge & Trap system provides 1000-fold concentration of samples prior to the chromatographic column DB-VRX (length 60 m, diameter 0,25 mm, a thickness of 1,4 microns stationary phase). Elaborated method for determination of emissions of formaldehyde GC-MS-PT is characterised by good linearity of 1-80 mu g/l repeatability is 1.2% (for the concentration of 80 mu g/l) and 7.5% (for concentrations of 1 mg/l). The uncertainty at the level of 1 mu g/l reaches 20.6%. The limit of quantification is 0.26 g/l, corresponding to emission of 1.3 mu g/m3. The method is designed to analyze the emission of formaldehyde from samples: including laminate flooring, parquet, mineral wool and wood-based materials that is made by binding with adhesives or glues one or more of the following materials: wood fibres, or stripped, or sheared wood sheets, and/or wood residues from forest, plantations, sawn-wood, residues from pulp/paper industry as well recycled wood. Wood-based materials comprise: hardboard, fibreboard, medium density fibreboard, particleboard, OSB (Oriented Strand Board), plywood, and panels in solid wood. The term 'wood-based material' also refers to composite materials made from wood-based panels coated by plastics, or laminated plastics, metals and other coating materials as well as finished/semi-finished wood-based panels. The results indicate that target compound varied in the range of 0.75 mg/m3) for the panels completely covered up to 22.5 mg/m3 for MDF. Emission of formaldehyde from samples of mineral wool was of 5.5 to 18.75 mu g/m3. Emissions of plywood veneered panels was 50.88 mg/m3. Emission of formaldehyde from mineral wool samples ranged from 5.5 to 18.75 mg/m3. In the case of MDF emissions were above 50 mg/m3 (58.4 and 54.0 mg/m3). Results of our research concerning emissions of formaldehyde from wood products confirm that such materials meet the requirements for the class of El in Europe. In materials intended for the use inside the premises with mineral wall the limit of formaldehyde concentrations was not exceeded. In construction products containing synthetic resins was confirmed by GC-MS of acetonitrile and acetone. The performed identification of hazardous chemicals showed that wood., based materials emit irritating and allergenic substances: formaldehyde, acetonitrile, acetone, carbamide, formamide, acetaldehyde, acetic acid, dimethylosilanol, butanal, 2-butanone, 3-ethylobutanal. Trace levels of aldehydes, amines, amides, nitriles and esters have been found in construction materials containing plastics resin formaldehyde.
Źródło:
Rocznik Ochrona Środowiska; 2012, Tom 14; 708-717
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time-dependent thermo-elastic creep analysis of thick-walled spherical pressure vessels made of functionally graded materials
Autorzy:
Kashkoli, M. D.
Nejad, M. Z.
Powiązania:
https://bibliotekanauki.pl/articles/949351.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
spherical pressure vessels
creep
time-dependent
thermoelastic
functionally graded material
Opis:
Assuming that the thermo-elastic creep response of the material is governed by Norton’s law and material properties, except Poisson’s ratio, are considered as a function of the radius of the spherical vessel, an analytical solution is presented for calculation of stresses and displacements of axisymmetric thick-walled spherical pressure vessels made of functionally graded materials. This analytical solution could be used to study the time and temperature dependence of stresses in spherical vessels made of functionally graded materials. Creep stresses and displacements are plotted against dimensionless radius and time for different values of the powers of the material properties.
Źródło:
Journal of Theoretical and Applied Mechanics; 2015, 53, 4; 1053-1065
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Catascopia, a new genus for three nearctic and one Palaearctic stagnicoline species (Gastropoda: Lymnaeidae)
Autorzy:
Meier-Brook, C.
Bargues, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/83309.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Opis:
A new genus, Catascopia Meier-Brook et Bargues, is erected for the North American stagnicoline lymnaeid snails catascopium, emarginata and elodes, and the Palaearctic species occulta Jackiewicz, 1959 is included. The separation from the genus Stagnicola is based on striking dissimilarities in base pair lengths of the rDNA ITS-2 sequences.
Źródło:
Folia Malacologica; 2002, 10, 2
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trapped mode resonances in metalo-dielectric structures with electric asymmetry materials
Autorzy:
Rotaru, M.D.
Sykulski, J.K.
Powiązania:
https://bibliotekanauki.pl/articles/141338.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
jakość
metamateriały elektromagnetyczne
asymetria elektryczna
trapped mode resonance
high quality factor
electromagnetic metamaterials
electrical asymmetry
Opis:
This paper investigates the possibility of exciting high quality trapped resonant modes on frequency selective surfaces consisting of identical sub-wavelength metallic inclusions (symmetrically split rings) with no structural asymmetry but exhibitting electrical asymmetry. The electrical symmetry is broken by using different dielectric substrates. The existence of such anti-symmetric trapped mode on geometrical symmetric structure is demonstrated through numerical simulation. Numerical results suggest that the high quality factor observed for these resonant modes is achieved via weak coupling between the "trapped modes" and free space which enables the excitation of these modes.
Źródło:
Archives of Electrical Engineering; 2011, 60, 1; 85-93
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The early fossil record of dinosaurs in North America: a new neotheropod from the base of the Upper Triassic Dockum Group of Texas
Autorzy:
Nesbitt, S.J.
Ezcurra, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/22614.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
The dinosaur record from the stratigraphically-lowest portions of Upper Triassic deposits of western North America is poor and only consists of a handful of fragmentary hind limb elements. Here we present an articulated segment of the ankle region of a dinosaur that consists of the distal ends of the tibia and fibula and a complete astragalocalcaneum. Additionally, we suggest that an isolated femur and maxilla from the same locality may belong to the same taxon. Using the most comprehensive analysis of early theropod relationships currently available, we determined that the new specimen pertains to a coelophysoid neotheropod (i.e., more closely related to Coelophysis bauri than to Allosaurus fragilis). The stratigraphic position of the locality where the new specimen was discovered is equivalent to the famous Otis Chalk localities and this set of localities likely predates the rest of the Dockum Group and possibly the entirety of the fossiliferous portion of the Chinle Formation on the Colorado Plateau. Therefore, the new specimen represents one of the oldest neotheropods. Accordingly, neotheropods were present at or just after the onset of both the Chinle Formation and Dockum Group deposits.
Źródło:
Acta Palaeontologica Polonica; 2015, 60, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Konflikty społeczne przy realizacji projektów Via Baltica i Rail Baltica
Social conflicts in the implementation of the Via Baltica and Rail Baltica projects
Autorzy:
Dobrzyński, M.D.
Butkiewicz, K.K.
Powiązania:
https://bibliotekanauki.pl/articles/399108.pdf
Data publikacji:
2010
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
Rail Baltica
konflikty społeczne
konflikty konstruktywne
social conflicts
constructive conflicts
Opis:
The development of road and rail infrastructure is one of the priorities of EU transport policy. Transportation projects often result in conflicts with local communities. Conflicts make the implementation of projects expands and becomes more expensive. The same is true in the case of two transport projects Via Baltica and Rail Baltica. Already at the design stage, they led to a number of social conflicts in the ecological. Our aim is to show ways of resolving social conflicts and the possibility of applying them to solve problems concerning the implementation of transport projects. Proper preparation of the project on transport infrastructure should take into account not only its technical aspects but also social conditions. Preparatory activities, which may include public consultation, avoid protests and conflicts.
Źródło:
Ekonomia i Zarządzanie; 2010, 2, 4; 7-16
2080-9646
Pojawia się w:
Ekonomia i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Budowa repozytoriów materiałów dydaktycznych dla nauczycieli
Building a teacher-dedicated repository of didactical materials
Autorzy:
Diarra, M.D.T.
Kaczmarek, J.
Powiązania:
https://bibliotekanauki.pl/articles/268498.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Opis:
Systemy komputerowe wykorzystywane w dziedzinie e-learning mogą nie tylko służyć do nauczania, ale również wspomagać przygotowanie lekcji w procesie edukacyjnym. W artykule opisano sposób realizacji repozytorium, które będzie biblioteką materiałów dydaktycznych dla nauczycieli. Repozytorium przeznaczone jest dla krajów afrykańskich, w szczególności dla Republiki Mali. Opisano mechanizm tworzenia, kontroli jakości i zatwierdzenia obiektów edukacyjnych włączonych do repozytorium. Omówiono zastosowane standardy i technologie WebServices, w tym rolę serwerów UDDI w budowie repozytorium.
The computer systems used in e-learning can be used in self-learning, but also in teaching. The paper describes how the digital repository can become a learning materials store. The repository is mainly intended for African countries and especially for Republic of Mali. The article describes the mechanism of the quality control and the method of the learning objects approval to repository. Finally it briefly discusses applied standards, and WebService technologies where the role of the UDDI register was in particular underlined in the building of the repository.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2004, 20; 41-46
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual-band absorption of a GaAs thin-film solar cell using a bilayer nano-antenna structure
Autorzy:
Khalaf, A. A. M.
Gaballa, M. D
Powiązania:
https://bibliotekanauki.pl/articles/1818246.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
dual absorption band
light trapping
plasmonic solar cell
nanoantenna
nanoparticles
Opis:
The paper presents a dual-band plasmonic solar cell. The proposed unit structure gathers two layers, each layer consists of a silver nanoparticle deposited on a GaAs substrate and covered with an ITO layer, It reveals two discrete absorption bands in the infra-red part of the solar spectrum. Nanoparticle structures have been used for light-trapping to increase the absorption of plasmonic solar cells. By proper engineering of these structures, resonance frequencies and absorption coefficients can be controlled as it will be elucidated. The simulation results are achieved using CST Microwave Studio through the finite element method. The results indicate that this proposed dual-band plasmonic solar cell exhibits an absorption bandwidth, defined as the full width at half maximum, reaches 71 nm. Moreover, It can be noticed that by controlling the nanoparticle height above the GaAs substrate, the absorption peak can be increased to reach 0.77.
Źródło:
Opto-Electronics Review; 2020, 28, 3; 171--175
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza bibliometryczna artykułów w „Gospodarce Materiałowej i Logistyce” z lat 2010-2012
Bibliometric analysis of articles in „Materials Management and Logistics” in the years 2010-2012
Autorzy:
Dobrzyński, M. D.
Dziekoński, K.
Jurczuk, A.
Powiązania:
https://bibliotekanauki.pl/articles/1377547.pdf
Data publikacji:
2013
Wydawca:
Polskie Wydawnictwo Ekonomiczne
Tematy:
bibliometria
logistyka
łańcuch dostaw
zarządzanie łańcuchem dostaw
bibliometrics
logistic
supply chain
supply chain management
Opis:
Analiza bibliometryczna artykułów naukowych dostarcza cennych informacji o strukturze zarówno nauki, jak i jej wybranych obszarów (np. zarządzania łańcuchem dostaw). Autorzy artykułu dokonali przeglądu publikacji w "Gospodarce Materiałowej i Logistyce" za lata 2010-2012 z zastosowaniem narzędzi analizy bibliometrycznej. Celem przeglądu była identyfikacja obszarów badawczych w zakresie zarządzania łańcuchem dostaw oraz ustalenie zawartości i struktury. Cel badań został zrealizowany poprzez analizę bibliometryczną bazy opublikowanych w latach 2010-2012 artykułów (ich anglojęzycznych abstraktów). Rezultaty analizy posłużyły do sformułowania wniosków dotyczących kluczowych, newralgicznych kierunków rozwojowych badań zarządzania łańcuchem dostaw w polskim obszarze badawczym na najbliższe lata.
Bibliometric analysis of scientific articles provides valuable information on the structure of both science and the selec- lod areas (eg. supply chain management). The authors reviewed the publication in „Materials Management and Logistics” for the years 2010-2012 using bibliometric analysis tools. The purpose of the review was to identify areas of research in the field of supply chain management and to determine the content and structure. Aim of the study was carried out by analyzing the bibliometric database for 2010-2012 published articles (the English-language abstracts). Bibliometric analysis confirmed the high performance potential of supply chain management as an area of scientific and research activities. Despite the narrow time frame of the analysis in the study area was observed high variability subjects of articles (as well as research projects, the underlying). Some research areas have remained unchanged, and the number of published articles confirmed the continued interest of researchers defined issues (eg. transport processes within the supply chain). In some of the analyzed periods occurred more than average interest in part of the problem areas.
Źródło:
Gospodarka Materiałowa i Logistyka; 2013, 12; 24--29
1231-2037
Pojawia się w:
Gospodarka Materiałowa i Logistyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TSD1 (TUMORUS SHOOT DEVELOPMENT1) and TSD2 genes related with cell wall function are involved in somatic embryogenesis induced in vitro in Arabidopsis
Autorzy:
Kudelko, K.
Grzybkowska, D.
Gaj, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/80111.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
TSD1 gene
TSD2 gene
cell wall
somatic embryogenesis
Arabidopsis
cellulose biosynthesis
methyltransferase
cell adhesion
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Toxicity of Two Types of Sewage Sludge from Wastewater Treatment Plant for Plants
Autorzy:
Adamcová, D.
Vaverková, M. D.
Břoušková, E.
Powiązania:
https://bibliotekanauki.pl/articles/123316.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
sewage treatment plant
phytotoxicity
Sinapis alba L
land application
Opis:
The aim of the present study was the estimation of the phytotoxicity of soils amended with sewage sludge with relation to Sinapis alba L. The study was realized in the system of a plot experiment. Two kinds of sewage sludge: dewatered and anaerobically stabilized sludge with dry matter content of about 24%, and dewatered sludge “Palikal” with dry matter content of about 92%. The results indicate that the tested samples are toxic. Growth inhibition at the studied samples ranged from 70.45% to 100%.
Źródło:
Journal of Ecological Engineering; 2016, 17, 2; 33-37
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance of earth pressure cell as grain pressure transducer in a model silo
Autorzy:
Molenda, M.
Montross, M.D.
Horabik, J.
Powiązania:
https://bibliotekanauki.pl/articles/25950.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
pressure cell
silo load
earth pressure
bulk solid
storage structure
granular material
pressure ratio
Źródło:
International Agrophysics; 2007, 21, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calcium Content Indicator of Scouring Efficiency
Zawartość wapnia jako wskaźnik wydajności odtłuszczenia bawełny
Autorzy:
Dochia, M.
Stanescu, M. D.
Constantin, C.
Powiązania:
https://bibliotekanauki.pl/articles/231775.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
scouring
bioscouring
calcium content measurement
hydrophilicity
czyszczenie
proces eliminacji pektyn
pomiar zawartości wapnia
hydrofilowość
Opis:
The pectin content of cotton fibers disrupts the uniform dyeing of cotton materials, decreasing their quality. The process of pectin elimination, known as scouring, may be realised by classic alkaline treatment or ecological enzymatic procedures. Pectins are galacturonic based polymers having as monomers: galacturonic acid (mainly as calcium salt) and methylgalacturonate. The efficiency of pectin elimination is usually evidenced by analyses of the hydrophilicity and weight loss of the scoured material. A solution for accurate evaluation of the scouring degree is measurement of the calcium content due to diminishing of calcium content proportional with pectin removal.
Zawartość pektyn w włóknach bawełnianych zakłóca równomierność wybarwienia materiałów bawełnianych obniżając ich jakość. Proces eliminacji pektyn, zwany również odtłuszczaniem, może być realizowany klasyczną metodą alkaliczną lub ekologiczną metodą z zastosowaniem enzymu. Pektyny są polimerami zbudowanymi z monomerów kwasu galaktouronowego i galaktouronianu metylu. Wydajność eliminacji pektyn oceniana jest zazwyczaj poprzez analizę hydrofilowości i zmniejszenia masy obrabianego materiału. Okazuje się, że dokładna ocenę wydajności możemy przeprowadzić poprzez pomiar zawartości wapnia.
Źródło:
Fibres & Textiles in Eastern Europe; 2013, 3 (99); 22-25
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 6423

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