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Wyświetlanie 1-15 z 89
Tytuł:
Influence of mulching and foliar nutrition on the formation of bulbs and content of some components in leaves and bulbs of Spanish bluebell (Hyacinthoides hispanica (Mill.) Rothm.)
Autorzy:
Blazewicz-Wozniak, M.
Wach, D.
Najda, A.
Mucha, S.
Powiązania:
https://bibliotekanauki.pl/articles/14007.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:
Journal of Elementology; 2019, 24, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for analysis and interpretation of data from field and brewery trials
Autorzy:
Mejza, I.
Ambrozy-Deregowska, K.
Bocianowski, J.
Blazewicz, J.
Liszewski, M.
Nowosad, K.
Powiązania:
https://bibliotekanauki.pl/articles/9595.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Katedra Zastosowań Matematyki i Informatyki
Źródło:
Colloquium Biometricum; 2018, 48
1896-7701
Pojawia się w:
Colloquium Biometricum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on the complexity of scheduling of communication-aware directed acyclic graph
Autorzy:
Musial, J.
Guzek, M.
Bouvry, P.
Blazewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/202127.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computational complexity
cloud computing
communication-aware cloud computing
directed acyclic graph
NP-hardness in cloud computing
złożoność obliczeniowa
chmura obliczeniowa
skierowany graf acykliczny
Opis:
The most recent incarnation of distributed paradigm is cloud computing. It can be seen as the first widely accepted business model of mass consumption of the distributed computing resources. Despite the differences in business models and technical details regarding cloud platforms, the distributed computing underlies cloud. Communications in cloud systems include transmissions of the results of cloud applications, users interactions, and exchange of data between different services that compose applications. The latter becomes more critical as applications become richer as well as more complex, and may consist of services operated by various providers. The effective communication between components of cloud systems is thus critical to the end user satisfaction and to the success of cloud services. We will discuss different cloud computing models (communication aware and unaware). Main focus will be placed on communication-aware directed acyclic graph (CA-DAG), which extends the classical DAG model by explicitly modeling communication tasks. Moreover, we will analyze and consult computational complexity of this innovative distributed computation model inspired by the characteristics of cloud computing. Providing a proof of strong NP-hardness of the problem allows for a future implementation and evolution of the communication-aware DAG models.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 2; 187-191
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applications of Comet Assay for the Evaluation of Genotoxicity and DNA Repair Efficiency in Nanomaterials Research
Autorzy:
Panek, A.
Błażewicz, M.
Frączek-Szczypta, A.
Adamczyk, J.
Wiltowska-Zuber, J.
Paluszkiewicz, C.
Powiązania:
https://bibliotekanauki.pl/articles/1030633.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.53.-j
87.85.jj
87.14.gk
Opis:
The single cell gel electrophoresis method, known as comet assay, is a rapid and sensitive technique for testing novel chemicals and nanoparticles for genotoxicity, monitoring environmental contamination with genotoxins and human biomonitoring. In our studies we check the applicability of this method for the evaluation of biocompatibility of modified (MWNF) and non-modified multi-walled carbon nanotubes (MWNT) as well as potential genotoxicity of mercury(II) nitrate. The obtained results enabled us to conclude that the presence of Hg(NO₃)₂ (p<0.001) and MWNT (p<0.04) cause a significantly higher level of DNA damage in comparison to functionalised nanomaterials MWNF. It was implied that for the three investigated agents only mercury significantly enhanced genotoxic effect of X-ray exposure (p<0.001) and inhibition of radio-induced DNA damage repair. On the contrary, the presence of MWNF have no influence on cellular repair efficiencies, while incubation with MWNT causes apoptosis and consequently results in lack of attached cells. In conclusion, our results confirmed the genotoxicity of mercury and non-modified carbon nanotubes as well as the biocompatibility of modified nanotubes. Additionally, we proved the usefulness of comet method for the evaluation of genotoxicity and DNA repair under the influence of different compounds and nanomaterials.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 280-282
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genotoxicity Study of Carbon Nanoforms using a Comet Assay
Autorzy:
Panek, A.
Frączek-Szczypta, A.
Długoń, E.
Nocuń, M.
Paluszkiewicz, C.
Błażewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/1030655.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.85.jj
87.14.gk
61.48.De
Opis:
Carbon nanoforms due to their unique properties can be applied in many areas also in medicine. This article presents preliminary genotoxicity studies of electrospun carbon nanofibers (ECNF). This material, apart from its numerous applications, may also be a candidate for use in medical therapy and diagnostics. Polyacrylonitrile (PAN) nanofibers received in the electrospinning process were carbonized and thereafter subjected to oxidation treatment (ECNF-F). Both types of fibres were analyzed with regard to genotoxic influence on the fibroblast line cells using comet assay. Additionally, comet assay experiments were conducted on biocompatible carbon nanotubes with a hydrophilic surface. The results indicate the key role of the oxidation process in the functionalization of carbon nanoparticles intended for medical purposes.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 306-308
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of growing conditions and foliar nutrition on growth and development of Spanish bluebell (Hyacinthoides hispanica (Mill.) Rothm.)
Autorzy:
Błażewicz-Woźniak, M.
Budzińska, J.
Mucha, S.
Wach, D.
Baltyn, M.
Pitura, K.
Powiązania:
https://bibliotekanauki.pl/articles/11863726.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
Spanish bluebell
Hyacinthoides hispanica
ornamental plant
flowering plant
decorative value
flowering
plant growth
plant development
growing condition
foliar nutrition
mulching
pine bark
phosphorus
Opis:
Hyacinthoides hispanica (Mill.) Rothm. is a valuable bulbous ornamental plant grown in parks and gardens. It comes from the Iberian Peninsula, hence its cultivation under Polish conditions may be inefficient. The purpose of the study was to determine the effect of growing conditions and foliar feeding using phosphorous fertilizer on the growth and decorative qualities of H. hispanica. It was found that the pine bark layer effectively protected the plants from freezing, which had a beneficial effect on their growth and flowering characteristics. Flowering of plants grown without the mulch was minimal, which clearly indicates that mulching of the soil under H. hispanica can be necessary. Plants grown using the mulch produced more and longer leaves, and also formed more inflorescences and fruits as well as longer inflorescence stems. The addition of peat to the soil did not favour the growth and decorative qualities of H. hispanica, while foliar nutrition with phosphorous had a positive effect. In addition, the decorative values of H. hispanica were influenced by the interaction of soil mulching with bark and foliar feeding. Plants grown in this combination had more inflorescences, which were higher, composed of more flowers in the inflorescence and reached a greater diameter than non-fertilized ones. Tested cultivars of H. hispanica differed in their features of growth and flowering.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 3; 137-146
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Siloxane layers modified with carbon nanoforms for medical applications
Autorzy:
Gawęda, M.
Długoń, E.
Markowski, J.
Sitarz, M.
Błażewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/284456.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
siloxane
carbon
medical application
Źródło:
Engineering of Biomaterials; 2018, 21, 148; 114
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carbon nanotubes, carbon nanofibers - in vitro study
Autorzy:
Menaszek, E.
Długoń, E.
Bania, I.
Markowski, J
Plich, J.
Błażewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/285810.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
carbon nanotubes
carbon nanofibers
nanomaterials
Źródło:
Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 80
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CNTs alter the biocompatibility of PAN-derived CNFs
Autorzy:
Benko, A.
Kolecka, B.
Nocuń, M.
Menaszek, E.
Błażewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/284816.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
CNTs
biocompatibility
osteoblasts
Źródło:
Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 71
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tabu search for the RNA partial degradation problem
Autorzy:
Rybarczyk, A.
Hertz, A.
Kasprzak, M.
Blazewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/330324.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
RNA degradation
tabu search
bioinformatics
rozkład RNA
algorytm tabu search
bioinformatyka
Opis:
In recent years, a growing interest has been observed in research on RNA (ribonucleic acid), primarily due to the discovery of the role of RNA molecules in biological systems. They not only serve as templates in protein synthesis or as adapters in the translation process, but also influence and are involved in the regulation of gene expression. The RNA degradation process is now heavily studied as a potential source of such riboregulators. In this paper, we consider the so-called RNA partial degradation problem (RNA PDP). By solving this combinatorial problem, one can reconstruct a given RNA molecule, having as input the results of the biochemical analysis of its degradation, which possibly contain errors (false negatives or false positives). From the computational point of view the RNA PDP is strongly NP-hard. Hence, there is a need for developing algorithms that construct good suboptimal solutions. We propose a heuristic approach, in which two tabu search algorithms cooperate, in order to reconstruct an RNA molecule. Computational tests clearly demonstrate that the proposed approach fits well the biological problem and allows to achieve near-optimal results. The algorithm is freely available at http://www.cs.put.poznan.pl/arybarczyk/tabusearch.php.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 2; 401-415
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithms solving the Internet shopping optimization problem with price discounts
Autorzy:
Musial, J.
Pecero, J. E.
Lopez-Loces, M. C.
Fraire-Huacuja, H. J.
Bouvry, P.
Blazewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/200209.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
e-commerce
Internet shopping
applications of operations research
approximations
algorithms
heuristics
combinatorial optimization
zakupy przez Internet
wnioski z badań operacyjnych
aproksymacje
algorytmy
heurystyki
optymalizacja kombinatoryczna
Opis:
The Internet shopping optimization problem arises when a customer aims to purchase a list of goods from a set of web-stores with a minimum total cost. This problem is NP-hard in the strong sense. We are interested in solving the Internet shopping optimization problem with additional delivery costs associated to the web-stores where the goods are bought. It is of interest to extend the model including price discounts of goods. The aim of this paper is to present a set of optimization algorithms to solve the problem. Our purpose is to find a compromise solution between computational time and results close to the optimum value. The performance of the set of algorithms is evaluated through simulations using real world data collected from 32 web-stores. The quality of the results provided by the set of algorithms is compared to the optimal solutions for small-size instances of the problem. The optimization algorithms are also evaluated regarding scalability when the size of the instances increases. The set of results revealed that the algorithms are able to compute good quality solutions close to the optimum in a reasonable time with very good scalability demonstrating their practicability.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 505-516
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carbon nanocomposite membrane with bioactive fillers
Autorzy:
Stodolak-Zych, E.
Szatkowski, P
Błażewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/285168.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
nanocomposites
membranes
bioactive fillers
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 57
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carbon nanofibers for medical applications
Autorzy:
Końko, J.
Chrzanowski, M.
Boguń, M.
Długoń, E.
Jeleń, P.
Krucińska, I.
Błażewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/284139.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
carbon nanofibers
carbon nanotubes
treatment
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 91
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of magnetite composite on the amount of double strand breaks induced with X-rays
Autorzy:
Wiecheć, A.
Nowicka, K.
Błażewicz, M.
Kwiatek, W.
Powiązania:
https://bibliotekanauki.pl/articles/1065182.pdf
Data publikacji:
2016-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.50.-a
87.53.-j
81.05.Mh
81.05.Ni
81.05.Pj
81.05.Qk
75.50.Bb
Opis:
The aim of this study was to find out if polylactide (PLA) modified with magnetite might affect the amount of DNA double strand breaks induced with X-rays. The human osteosarcoma cells (MG63) were seeded on the polystyrene cell culture dishes (PS), PLA and PLA modified with magnetite substrates. The double strand breaks were analyzed after X-ray irradiation (dose rate 2 Gy/min), in the first day of culturing. The number of double strand breaks increased in the PLA modified with magnetite, for example after 1 Gy of X-rays irradiation, double strand breaks/cell equaled: 24.5 vs. 17.5 and 17.3, for PLA modified with magnetite vs. PLA and PS, p < 0.0003. We conclude that PLA modified with magnetite changed the number of double strand breaks induced with X-rays. However, more research is needed to confirm that such composite might be considered as radiosensitizer in radiotherapy.
Źródło:
Acta Physica Polonica A; 2016, 129, 2; 174-175
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exact and heuristic approaches to solve the Internet shopping optimization problem with delivery costs
Autorzy:
Lopez-Loces, M. C.
Musial, J.
Pecero, J. E.
Fraire-Huacuja, H. J.
Blazewicz, J.
Bouvry, P.
Powiązania:
https://bibliotekanauki.pl/articles/330508.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
internet shopping optimization
integer linear programming
cellular processing algorithm
heuristic algorithms
optimization in e-commerce
zakupy internetowe
programowanie liniowe
algorytm heurystyczny
handel elektroniczny
Opis:
Internet shopping has been one of the most common online activities, carried out by millions of users every day. As the number of available offers grows, the difficulty in getting the best one among all the shops increases as well. In this paper we propose an integer linear programming (ILP) model and two heuristic solutions, the MinMin algorithm and the cellular processing algorithm, to tackle the Internet shopping optimization problem with delivery costs. The obtained results improve those achieved by the state-of-the-art heuristics, and for small real case scenarios ILP delivers exact solutions in a reasonable amount of time.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2016, 26, 2; 391-406
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 89

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