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Tytuł:
Determining degree of complexity in different interfirm relations : formal versus informal relations of authoritative system
Wyznaczanie poziomu złożoności w różnych relacjach : formalnych versus nieformalnych w systemach autoratywnych
Autorzy:
Osman, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/361775.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
interfirm relationship
network complexity
interorganizational relationships
zależności międzyfirmowe
złożoność sieci
relacje międzyorganizacyjne
Opis:
Background: Inter-organizational network complexity exists in many forms. Depending on the type of network relationship, we could see different pattern of complexity emerged from the complex interorganizational relations. Yet managing them has taken rather a monotonous approach. However, no previous study has attempted how this complexity may appear in the different type of network structure. Methods: Using the social network analysis methodology, this study embarks on the objective in determining the structure of complexity of inter-organizational structure base on the different type of network relationships. Results and conclusions: Findings of this study indicated that firms' degree of complexity emerged from the firms' involvement differs in the different type of inter-organizational relationships that they are embedded in. Implication of the findings highlights the importance of network management base on type of inter-organizational relations and selective resource allocations management for inter-organizational network.
Wstęp: Międzyorganizacyjna złożoność sieci przejawia się w wielu postaciach. Uwzględniając typ relacji sieciowych, można mówić o wieloelementowym wzorze powiązań związków międzyorganizacyjnych. Niemniej jednak można je analizować w dość schematyczny sposób. Mimo to, brak jest badań jak ta złożoność przejawia się w różnego rodzaju typach struktur sieciowych. Metody: Stosując metodologię analizy sieci społecznych, przeanalizowano strukturę zależności międzyorganizacyjnych w zależności od rodzaju powiązań sieciowych. Wyniki i wnioski: Wyniki otrzymane w trakcie analizy wykazują poziom złożoności w zależności od powiązań danej organizacji z innymi uczestnikami. Sugerują one istotność zarządzania sieciowego zależnościami międzyorganizacyjnymi oraz selektywną alokację zasobów do obszaru zarządzania sieciowego.
Źródło:
LogForum; 2017, 13, 2; 195-208
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Occupational Safety Communication for Hazardous Goods: The Development of a Policy in Israel
Autorzy:
Glinert, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/90870.pdf
Data publikacji:
2002
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
safety
communication
Israel
policy
Izrael
bezpieczeństwo pracy
produkty przemysłowe
produkty niebezpieczne
Opis:
Israeli policy governing written occupational safety information for carriage and supply of hazardous goods, and procedures for implementation, are described and evaluated for their potential communicative effectiveness, in view of users’ linguistic abilities and the language employed. We also consider whether the addressee should include the end-user and the reading-impaired. The evaluation is set in the context of broader Israeli language policy, and comparison is made with communication policies for hazardous goods adopted by the European Union, the UK, and the USA.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2002, 8, 1; 3-22
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A social network model of supply chain management in formal and informal inter-firm engagement
Model powiązań socjalnych w obrębie łańcucha dostaw w przypadku formalnej i nieformalnej współpracy biznesowej
Autorzy:
Osman, L. H. B.
Powiązania:
https://bibliotekanauki.pl/articles/361908.pdf
Data publikacji:
2015
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
supply chain management
network studies
inter-organizational relations
social capital
supply chain complexity
zarządzanie łańcuchem dostaw
prace nad siecią
stosunki międzyorganizacyjne
kapitał socjalny
kompleksowość łańcucha dostaw
Opis:
Background: This research looks into the different effects of firms' network structural positions in an upstream supply network upon the firms' level of relational capital outcomes. Previous research has largely focus on the context of decentralized network structure. However, the supply network is a centralized network because of the existence of the focal firm. The existence of the focal firm may influence the impact of relational capital outcomes. Methods: The objective of this research is to determine the type of network structural positions required to obtain reasonable relational capital outcome in upstream supply network. Results and conclusions: This study found that, network structural positions i.e. betweeness centrality contributed to firms' level of relational capital influence. In conclusion, firms, embedded in upstream supply network benefits differently in terms of relational capital through different degree of embeddedness. Firms' resources should be re-aligned to match the benefits with the different network structural positions.
Wstęp: Różne efekty wpływu pozycji firm w strukturze powiązań łańcucha dostaw typu upstream na poziom oferowanych przez te firmy jakości obsługi był przedmiotem przeprowadzonych badań. Wcześniejsze badania koncentrowały się głównie na zawartości zdecentralizowanej struktury sieciowej. Jednak łańcuch dostaw jest siecią scentralizowaną z powodu istnienia firmy o największym znaczeniu w obrębie tego łańcucha. Istnienie takiej firmy wpływa na relacje i sposób działania pozostałych firm w łańcuchu. Metody: Celem pracy było określenie typu pozycji w strukturze sieciowej wymaganej w celu uzyskania zadowalających relacji w obrębie łańcucha dostaw typu upstream. Wyniki i wnioski: Pozycja w strukturze sieciowej, tj. wartość wskaźnika centralizacji gniazda sieci (betweeness centrality) wpływa na poziom oddziaływania na innych, możliwy do realizacji przez daną firmę. Firmy znajdujące się w strukturze łańcucha dostaw w różny sposób korzystają z możliwości oddziaływań na innych w zależności od ich pozycji w tym łańcuchu. Zasoby firmy powinny być tak dobrane, aby mogła ona czerpać korzyści, znajdując się w różnych pozycjach w obrębie danej struktury sieciowej.
Źródło:
LogForum; 2015, 11, 4; 359-373
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plants and soil amendments for remediation of soil affected by synthetic oil and gas production wastewater
Autorzy:
Clay, L. H.
Pichtel, J.
Powiązania:
https://bibliotekanauki.pl/articles/363254.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
Bioconcentration factor
constructed wetlands
heavy metals
hyperaccumulator
produced water
soil remediation
Opis:
Oil and gas production water (PW) is brought to the surface when hydrocarbon reservoirs deep within geologic strata are extracted. Large volumes of PW present environmental challenges when released to the land surface due to high levels of salinity and potentially toxic elements. The effects of PW on soil chemical properties and plant response were investigated in both growth chamber and field studies. In the growth chamber, wheat (Triticum aestivum) and red clover (Trifolium repens) were grown in soil which was flooded with synthetic PW. The PW was enriched with several metals (Na, Cu, Cr, Pb) and had an acidic pH (2.5) and EC of 33,650 dSm-1. Soil amendments included food waste compost, composted biosolids, gypsum (CaSO4) and NPK 10-10-10 fertilizer. Metal concentrations in soil and plants were determined using flame atomic absorption spectrophotometry. The food waste compost provided for maximal uptake by clover of Cu, Cr and Pb compared to all other amendments. In several soil treatments both wheat and clover behaved as metal hyperaccumulators having high bioconcentration factors (BCF, ratio of metal concentrations of plant tissue to soil). Clover was the most efficient in accumulating Cu and Cr in shoots (BCF = 22.2 and 30.6, respectively). Greatest metal uptake in both plant species occurred in either the biosolids or compost treatment. In a field study, plots were flooded with synthetic PW and grown to corn (Zea mays) and a turf mixture (Kentucky bluegrass, Poa pratensis and perennial ryegrass, Lolium perenne). Both corn and turf accumulated substantial soil Cu and Pb. Corn experienced significant die-off; however, turf survived the PW application. Turf mixtures, clover and/or wheat may be suitable for phytoremediation of PW-affected soil. Addition of organic amendments to soil may enhance metal uptake by plants.
Źródło:
Environmental Biotechnology; 2017, 13, 2; 1-13
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photoionization of Ge¯-DX State in GaAs
Autorzy:
Piotrzkowski, R.
Dmowski, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/1968412.pdf
Data publikacji:
1997-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
63.20.Mt
71.55.-i
72.40.+w
Opis:
We have determined the efficiency of photoionization of Ge¯-DX state in GaAs as a function of photon energy. The optical ionization energy derived from the fitting is about 1.0 eV. It proves a large difference between optical and thermal ionization energies and confirms that for Ge-impurity, the broken-bond model and large lattice relaxation are valid and not the breathing mode with small lattice relaxation, resulting from the calculations presented for Ge-impurity in T.M. Schmidt, A. Fazzio, M.J. Caldas, Mater. Sci. Forum 196/201, 273 (1995).
Źródło:
Acta Physica Polonica A; 1997, 92, 5; 950-952
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of Casting Technologies for Al-Si-Cu Plate Casting
Autorzy:
Cupido, L. H.
Żak, P. L.
Powiązania:
https://bibliotekanauki.pl/articles/379873.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
information technology
foundry industry
aluminium alloy
oxide film
casting simulation
krzepnięcie stopu
technologia informatyczna
przemysł odlewniczy
stop aluminium
warstwa tlenkowa
symulacja odlewania
Opis:
During the casting of aluminium alloys, the susceptibility to form oxide films is high, due to the turbulent flow of the melt and constant exposure of new surface area. This have impact on the properties of the material and the service life of the casting components. Also, hydrogen solubility in the solid state are very low, which ends up being rejected and causing porosity. After pouring, when solidification occurs, another phenomenon arise called shrinkage. This require excess molten metal to be fed during this phase change to eliminate or reduce the effect of volumetric changes. Filling and feeding during aluminium casting is therefore of paramount importance, and careful steps needs to be undertaken to reduce possible defects in the castings. The objective is to apply studied literature guides and rules and simulate the casting process of aluminium alloys, and understand the how certain defects are occurring during this process. This is a preliminary study towards the understanding of the “macro evolution” of Al-Si-Cu alloy during solidification, which will be the bases for the study of microsegregation of the specified alloy.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3 spec.; 11-14
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conservative finite volume element schemes for the complex modified Korteweg–de Vries equation
Autorzy:
Yan, J. L.
Zheng, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/330164.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
mass
energy
momentum
finite volume method
Korteweg–de Vries equation
pęd
metoda objętości skończonych
równanie Kortewega-de Vries
Opis:
The aim of this paper is to build and validate a class of energy-preserving schemes for simulating a complex modified Korteweg–de Vries equation. The method is based on a combination of a discrete variational derivative method in time and finite volume element approximation in space. The resulting scheme is accurate, robust and energy-preserving. In addition, for comparison, we also develop a momentum-preserving finite volume element scheme and an implicit midpoint finite volume element scheme. Finally, a complete numerical study is developed to investigate the accuracy, conservation properties and long time behaviors of the energy-preserving scheme, in comparison with the momentum-preserving scheme and the implicit midpoint scheme, for the complex modified Korteweg–de Vries equation.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 3; 515-525
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Toxicity of antimony, gallium, and indium toward a teleost model and a native fish species of semiconductor manufacturing districts of Taiwan
Autorzy:
Yang, J.-L.
Chen, L.-H.
Powiązania:
https://bibliotekanauki.pl/articles/13555.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:
Journal of Elementology; 2018, 23, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of Temperature-Sensitive Polyurethanes Based on Modified Castor Oil
Otrzymywanie termowrażliwych poliuretanów na bazie zmodyfikowanego oleju rycynowego
Autorzy:
Bao, L.-H.
Ma, H.-T.
Powiązania:
https://bibliotekanauki.pl/articles/231815.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
modified castor oil
temperature-sensitive polyurethane
waterproof fabrics
breathable fabrics
zmodyfikowany olej rycynowy
termowrażliwe poliuretany
tkaniny wodoodporne
tkaniny oddychające
przepuszczalność pary wodnej
Opis:
A series of temperature-sensitive polyurethanes (TSPUs) with polytetrahydrofuran glycol (PTMG), poly(ethylene glycol) (PEG) and maleic anhydride modified castor oil (MCO) as soft segments were prepared in this paper. The morphology of the temperature-sensitive polyurethane films was characterised by SEM, DSC and WAXD. SEM studies were also carried out to investigate the surface structure of coated and uncoated fabrics. The water vapour permeability of the coated and uncoated fabrics were measured as well. The results showed that a nonporous TSPU layer was formed on the coated fabric surface. The tailor -made TSPUs had one to three soft segment crystal melting point temperatures, with the lower peak temperature Tpm1 belonging to the soft segment PTMG and the higher peak temperature Tpm2 to the hydropilic soft segment PEG2000. The water vapour permeability of TSPUs coated fabrics increased with an increase in PEG2000 concentration and PEG molecular weight, but decreased with an increase in the hard segment content, and triggered around the soft segment crystal melting point temperature of TSPUs.
W pracy otrzymano termowrażliwe poliuretany (TSPU) z glikolu politetrahydrofuranowego (PTMG), glikolu polietylenowego (PEG) i bezwodnika maleinowego zmodyfikowanego olejem rycynowym (MCO). Za pomocą SEM, DSC i WAXD zbadano morfologię termowrażliwych folii poliuretanowych. Przeprowadzono również badania SEM w celu zbadania struktury powierzchni powleczonych i niepowleczonych tkanin. Zmierzono także przepuszczalność pary wodnej powleczonych i niepowleczonych tkanin.
Źródło:
Fibres & Textiles in Eastern Europe; 2017, 3 (123); 34-39
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technetium-99m : from nuclear medicine applications to fi ne sediment transport studies
Autorzy:
Bandeira, J. V.
Salim, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/971527.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
fine sediment transport
99mTc
mathematical modelling
environmental impacts
water environment
Opis:
The present work is a contribution to rescue the history of development of the application of 99mTc, widely used in nuclear medicine, to its use as tracer for the study of the transport of fi ne sediment in suspension, in water environment. It addresses the usefulness of its application in obtaining important parameters in environmental studies, illustrating them with some applications already performed and the results obtained. This kind of study, when associated with information on hydrodynamic parameters, for example, river, tidal, wind and wave currents, are powerful tools for the understanding and quantification of fi ne sediment transport in suspension. Fine sediment is an important vector in the transportation of heavy metals, organic matter and nutrients in water environment, and the quantitative knowledge of its behaviour is mandatory for studies of environmental impacts. Fine sediment labelled with 99mTc, can also be used to study the effect of human interventions, such as dredging of reservoirs, access channels and harbours, and the dumping of dredged materials in water bodies. Besides that, it can be used to optimize dredging works, evaluating the technical and economic feasibility of dumping sites and their environmental impact. It is a valuable support in the calibration and validation of mathematical models for sediment dynamics.
Źródło:
Nukleonika; 2017, 62, 4; 295-302
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carbon-based acid catalyst from waste seed shells: preparation and characterization
Autorzy:
Wang, L. H.
Liu, H.
Li, L.
Powiązania:
https://bibliotekanauki.pl/articles/778575.pdf
Data publikacji:
2015
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
carbon-based solid acid
waste seed shells
esterification
transesterification
biodiesel
Opis:
A carbon-based solid acid catalyst was prepared by the sulfonation of carbonized seed shells of Jatropha curcas (J. curcas L.). The structure of amorphous carbon consisting of polycyclic aromatic carbon sheets attached a high density of acidic SO3H groups (2.0 mmol · g−1) was identified with scanning electron microscopy (SEM), fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The performance of the solid acid catalyst was evaluated for biodiesel production in the esterification of oleic acid with methanol. 95.7% yield of biodiesel was obtained after 2 h reaction and the conversions with reused catalyst varied in the range of 95.7% to 95.1%, showing better activity and stability than commercial catalyst amberlyst-46. It was also observed that the prepared catalyst showed enhanced activity in the transesterification of triolein with methanol when compared with other solid acid catalysts. A synergistic effect results from the high density of SO3H groups and the good access of reactants to the acidic sites can be used to explain the excellent catalytic activity, as well as the strong affinity between the hydrophilic reactants and the neutral OH groups bonded to the polycyclic aromatic carbon rings.
Źródło:
Polish Journal of Chemical Technology; 2015, 17, 4; 37-41
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculus and applications of Studniarski’s derivatives to sensitivity and implicit function theorems
Autorzy:
Anh, N. L. H.
Khanh, P. Q.
Powiązania:
https://bibliotekanauki.pl/articles/205490.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
Studniarski’s derivatives
sum rule
chain rule
product rule
quotient rule
sensitivity analysis
implicit multifunction theorems
Opis:
We first discuss basic calculus rules for Studniarski’s derivatives. Then, we apply these derivatives to sensitivity analysis of solutions to inclusions and to computing the derivative of implicit multifunctions.
Źródło:
Control and Cybernetics; 2014, 43, 1; 33-57
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A glimpse into ancient food storage: Sequestrichnia and associated nucleocave Chondrites from Eocene deep-sea deposits
Autorzy:
Šamánek, J.
Vallon, L.H.
Mikuláš, R.
Vachek, M.
Powiązania:
https://bibliotekanauki.pl/articles/31341414.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
Zoophycos brianteus
Chondrites intricatus
Helminthopsis tenuis
Tubulichnium mediterranensis
Scolicia strozzii
Dactyloidites
Megagrapton irregulare
Planolites
Eocene
deep-sea deposit
Zoophycos
trace fossil
fossil
flysch
Western Carpathians Mountains
Czech Republic
Źródło:
Acta Palaeontologica Polonica; 2022, 67, 3; 767-779
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of biochar as media for propagation of some difficult-to-root ornamental plants
Autorzy:
Adzraku, H.-V.
Tandoh, P.K.
Zurei, L.H.
Powiązania:
https://bibliotekanauki.pl/articles/10001.pdf
Data publikacji:
2017
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
biochar
propagation
difficult-to-root
ornamental plant
Ixora coccinea
Ficus pumila
root medium
Opis:
A study was carried out at the Department of Horticulture, KNUST from 8th January, 2017 to 17th March, 2017 to determine the best propagating medium for Ixora coccinea and Ficus pumila. The design was a Complete Randomized Design with four treatments replicated three times. The treatments were; topsoil only, biochar only, mixture of topsoil and biochar (1:1) and mixture of topsoil and biochar (2:1) . The study revealed that the treatment with the mixture of topsoil and biochar (2:1) was the best medium, in terms of physical and chemical properties and produced the highest number of leaves and rooted cuttings in Ficus pumila. Topsoil only had highest number of leaves and roots for Ixora coccinea. The biochar medium started rooting earlier for Ficus pumila at 2 weeks and recorded the highest number of leaves, while that of Ixora coccinea rooted at the fourth week towards the fifth week. The study concluded that mixture of topsoil and biochar (2:1) could be used for propagating difficult to root ornamental plants whiles Biochar only could also be used to propagate Ficus pumila.
Źródło:
Environment, Earth and Ecology; 2017, 1, 2
2543-9774
2451-4225
Pojawia się w:
Environment, Earth and Ecology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Far-Infrared Narrow-Band Photodetector Based on Magnetically Tunable Cyclotron Resonance-Assisted Transitions in Pure n-Type InSb
Autorzy:
Dmowski, L. H.
Cheremisin, M.
Skierbiszewski, C.
Knap, W.
Powiązania:
https://bibliotekanauki.pl/articles/1968062.pdf
Data publikacji:
1997-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.20.Ls
72.40.+w
78.90.+t
Opis:
We present the possibility of using magnetic field to enhance responsivity and to tune spectral range of far-infrared InSb detector (based on photoconductivity effect) beyond its standard range limited to about 30 cm$\text{}^{-1}$. We show that due to cyclotron resonance assisted transitions we can use it as a tunable detector working up to energies about 180 cm$\text{}^{-1}$ (22 meV). We have used such a detector as a spectrometer for measurements of the Landau emission from GaAs emitter.
Źródło:
Acta Physica Polonica A; 1997, 92, 4; 733-736
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of phytogenics on growth performance, fecal score, blood profiles, fecal noxious gas emission, digestibility, and intestinal morphology of weanling pigs challenged with Escherichia coli K88
Autorzy:
Mohana Devi, S.
Lee, S.I.
Kim, L.H.
Powiązania:
https://bibliotekanauki.pl/articles/30946.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Phytogenic feed additives have become attractive alternatives for use in animal diets. The objective of the present study was to evaluate the effect of a phytogenic-based feed additive on growth performance, nutrient digestibility, blood profiles, fecal noxious gas emission, and intestinal morphology of weaning pigs after dietary challenge with E. coli K88. A total of 120 crossbred pigs [(Yorkshire × Landrace) × Duroc)] with an initial body weight (BW) of 6.09 ± 0.96 kg (21 d of age) were assigned randomly to 1 of the 4 dietary treatments. Each pen housed 5 pigs, and there were 6 pens/treatment. Treatments included: T1, negative control (without antibiotics); T2, T1 + antibiotic; T3, T1 + 0.05% phytogenics; and T4, T1 + 0.2% commercial mix of organic acids. Overall, the average daily gain (ADG) with the T3 treatment was higher (P<0.05). At wk 1, the apparent total tract digestibility (ATTD) of dry matter (DM) was increased (P<0.05) with T4 treatment. The ATTD of ash with T3 and T4 treatments was greater (P<0.05). At wk 3, pigs fed with the T4 diet had a significantly higher (P<0.05) ATTD of DM. The ATTD of ash and calcium (Ca) was significantly increased (P<0.05) with the T4 treatment. Pigs fed with the T3 diet had a higher (P<0.05) ATTD of phosphorus (P). At wk 6, the ATTD of ash was significantly increased (P<0.05) with the T1 and T3 treatments. The data indicate that phytogenics positively affect growth performance of weaning pigs, indicating that their use as an alternative in the diets of weaning pigs can significantly improve ADG, under challenge with E.coli K88.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of the terms trace, mark and structure
Autorzy:
Vallon, L. H.
Rindsberg, A. K.
Martin, A. J.
Powiązania:
https://bibliotekanauki.pl/articles/191828.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
ichnology
terminology
mark
trace
sedimentary structure
Opis:
Mark, trace and structure have been in consistently used in ichnology for many years; we wish to clarify the origins and to prescribe correct usage of these terms. The origins of the words are ancient and complex; in the twentieth century they were given clear definitions as ichnologic terms. Seilacher (1953) defined a mark (German Marke) as a physical (abiogenic) sedimentary structure, as in the common terms sole mark, flute mark, but not bite mark or scratch mark. Trace has been defined many times; we recommend the consensus definition of Bertling et al. (2006) as “a morphologically recurrent structure resulting from the life activity of an individual organism (or homotypic or ganisms) modifying the substrate”; this in cludes dwelling trace, feeding trace, bite trace. Structure, as implied in another consensus paper (Frey, 1973), is a neutral term for geologic patterns resulting from either biogenic or abiogenic processes. Use of the three terms in a clear consistent manner will aid communication both among ichnologists and between ichnologists and their colleagues in other fields.
Źródło:
Annales Societatis Geologorum Poloniae; 2015, 85, 3; 527-528
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single-phase power active filter using instantaneous reactive power theory : theoretical and practical approach
Autorzy:
Altus, J.
Michalik, J.
Dobrucky, B.
Viet, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/262653.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
power active filter
p-q power theory
orthogonal transformations
single-phase system
fictitous virtual quantity
Opis:
The paper deals with the new method of analysis, synthesis and experimentation of single-phase power active filters. By using a new particular transformation theory, the ordinary single-phase system can be transformed into an equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented bv fictitious second phase so that both of them will create an orthogonal system, as is usual in three-phase systems, in spite of [1]. Application of the above theory makes it possible to use complex methods of analysis as the instantaneous reactive power method, which have not been usable for single-phase systems so far. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of reference current determination for single-phase power active filter. The paper shows some examples of the simu-lution verification results, which proved a high accuracy and extremely fast response of the single-phase active filter with control, based on the introduced method. The effectiveness of proposed control algorithm is also demonstrated by experimental results, which were carried out on the single - phase active parallel filter, power rate of 25 kVA and controlled by 32 - bit Heating point digital signal processor TMS 320C31.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2005, 11, 1; 33-38
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Product Lifecycle Management framework for business transformation
Zarządzanie cyklem życia produktu w okresie transformacji gospodarczej
Autorzy:
Donoghue, I. D. M.
Hannola, L. H.
Papinniemi, J. J.
Powiązania:
https://bibliotekanauki.pl/articles/361949.pdf
Data publikacji:
2018
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
product life cycle management
product management
enterprise architecture
business model
business strategy
zarządzanie cyklem życia produktu
zarządzanie produktem
struktura przedsiębiorstwa
model biznesowy
strategia biznesowa
Opis:
Background: The role of Product Lifecycle Management (PLM) in business change varies in scope and impact. PLM initiatives range from Information System (IS) change to strategic business transformation, and capabilities to implement PLM successfully are unclear. The paper identifies a PLM framework for transition and related variables. Understanding these variables influence successful PLM transformation. Methods: The methods used in this paper include a literature review on existing frameworks available for PLM initiatives. This paper is based on a PLM case study done between 2011-2015, when the company's strategy transformed it from an engineering company to a product and service company. Results: The results show that strategy-driven PLM transformation impacting a company on many levels, and PLM focusing on IS-driven process harmonisation fails due to limited knowledge of the business models, products and services. Conclusions: The conclusions are that PLM is at the core of business transformation and cross-functional impacting products, services and customers.
Wstęp: Znaczenie i wielkość roli zarządzania cyklem życia produktu (PLM) zależy od obszaru działalności gospodarczej. Zarządzanie cyklem życia produktu inicjuje różne zmiany zarówno w systemie informacyjnym przedsiębiorstwa jak z transformacji na poziomie strategicznym. Trudno też określić jednoznacznie warunki pomyślnego wdrożenia zarządzania życiem produktu. W pracy zidentyfikowano ramy dla zarządzania cyklem życia produktu jak i zmienne zależne procesu. Prawidłowe zrozumienie wpływu tych czynników ma istotne znaczenie dla pomyślnej transformacji zarządzania cyklem życia produktu. Metody: Główną metodą pozyskiwania danych był przegląd istniejącej literatury naukowej dotyczącej różnych inicjatyw związanych z zarządzaniem cyklem życia produktu. Praca obejmuje analizę przypadku zarządzania cyklem życia produktu w oparciu o dane konkretnego przedsiębiorstwa z lat 2010-2015, w okresie którym uległa transformacji strategia tego przedsiębiorstwa z profilu inżynierskiego na produktowy i usługowy. Wyniki: Otrzymane wyniki pokazują, że przeprowadzona transformacja miała wpływ na działalność przedsiębiorstwa na wielu poziomach. Zarządzanie cyklem życia produktu skupione tylko na harmonizacji procesu w oparciu o system informacyjne nie odniósł pożądanego skutku ze względu na ograniczoną wiedzę na temat modeli przedsiębiorstwa, produktów i usług. Wnioski: Zarządzenie cyklem życia produktu jest kluczowym elementem transformacji biznesowej i ma wpływ na wzajemne zależności pomiędzy produktami, usługami i klientami.
Źródło:
LogForum; 2018, 14, 3; 293-303
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intelligent control algorithm for ship dynamic positioning
Autorzy:
Meng, W.
Sheng, L. H.
Qing, M.
Rong, B. G.
Powiązania:
https://bibliotekanauki.pl/articles/229337.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dynamic positioning
fuzzy control
neural network control
BP algorithm
Opis:
Ship motion in the sea is a complex nonlinear kinematics. The hydrodynamic coefficients of ship model are very difficult to accurately determine. Establishing accurate mathematical model of ship motion is difficult because of changing random factors in the marine environment. Aiming at seeking a method of control to realize ship positioning, intelligent control algorithms are adopt utilizing operator's experience. Fuzzy controller and the neural network controller are respectively designed. Through simulations and experiments, intelligent control algorithm can deal with the complex nonlinear motion, and has good robustness. The ship dynamic positioning system with neural network control has high positioning accuracy and performance.
Źródło:
Archives of Control Sciences; 2014, 24, 4; 479-497
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Recommended Integrated Mechanism to Enhance OSH Management of Blue-Collar Foreign Workers in Taiwan
Autorzy:
Liao, H. C.
Cheng, S. F.
Wang, Y.
Lee, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/90376.pdf
Data publikacji:
2014
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
occupational safety and health
Labor Safety and Health Act
OSH training program
manpower agency
blue-collar foreign worker
bezpieczeństwo i higiena pracy
zdrowie
szkolenie BHP
Opis:
This study examines the roles and functions of businesses, labor-exporting countries’ representative offices in Taiwan, religious organizations, and manpower agencies in promoting occupational safety and health (OSH). It also offers advice to Taiwanese authorities on making policies and improvements regarding the oversight mechanism mandated by the Labor Safety and Health Act, giving them an idea of what to focus on when enforcing control over blue-collar foreign workers’ OSH conditions. This study also proposes that Taiwanese authorities may serve not only as an overseer/inspector of those hiring blue-collar foreign workers in Taiwan, but also expand their role to lay down policies regarding a variety of OSH teaching materials in the blue-collar foreign workers’ native languages (spoken or written), the qualifications of translators in blue-collar foreign workers’ OSH training programs, and regulations concerning the longer hours such training programs take.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2014, 20, 4; 537-549
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication Of Zn4Sb3 Alloys By A Combination Of Gas-Atomization And Spark Plasma Sintering Processes
Wytwarzanie i konsolidacja proszków stopowych zn4sb3 przez kombinację procesów atomizacji gazowej i spiekania
Autorzy:
Dharmaiah, P.
Kim, H.-S.
Lee, L. H.
Hong, S.-J.
Powiązania:
https://bibliotekanauki.pl/articles/355894.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gas atomization
microstructure
spark plasma sintering (SPS)
X-ray diffraction
atomizacja gazowa
mikrostruktura
SPS
spiekanie plazmowe
analiza rentgenowska (XRD)
Opis:
In this study, single phase polycrystalline Zn4Sb3 as well as 11 at.% Zn-rich Zn4Sb3 alloy having ε-Zn4Sb3 (majority phase) and Zn (minority phase) phases bulk samples produced by gas-atomization and subsequently consolidated by spark plasma sintering (SPS) process. The crystal structures were analyzed by X-ray diffraction (XRD) and cross-sectional microstructure were observed by the scanning electron microscopy (SEM). The internal grain microstructure of 11at.% Zn-rich Zn4Sb3 powders shows lamellar structure. Relative density, Vickers hardness and crack lengths were measured to investigate the effect of sintering temperature of Zn4Sb3 samples which are sintered at 653, 673 and 693 K. Relative density of the single phase bulk Zn4Sb3 sample reached to 99.2% of its theoretical density. The micro Vickers hardness of three different sintering temperatures were found around 2.17 – 2.236 GPa.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2B; 1417-1421
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Hamiltonian approach to fault isolation in a planar vertical take-off and landing aircraft model
Autorzy:
Rodriguez-Alfaro, L. H.
Alcorta-Garcia, E.
Lara, D.
Romero, G.
Powiązania:
https://bibliotekanauki.pl/articles/330664.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
Hamiltonian method
observer
fault diagnosis
nonlinear system
UAVs
metoda Hamiltonowska
obserwator
diagnoza uszkodzeń
układ nieliniowy
Opis:
The problem of fault detection and isolation in a class of nonlinear systems having a Hamiltonian representation is considered. In particular, a model of a planar vertical take-off and landing aircraft with sensor and actuator faults is studied. A Hamiltonian representation is derived from an Euler–Lagrange representation of the system model considered. In this form, nonlinear decoupling is applied in order to obtain subsystems with (as much as possible) specific fault sensitivity properties. The resulting decoupled subsystem is represented as a Hamiltonian system and observer-based residual generators are designed. The results are presented through simulations to show the effectiveness of the proposed approach.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 1; 65-76
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Presence of cellulolytic and xylanolytic activities in the gut fluid of grasshopper Oxya velox
Autorzy:
Dash, S.
Mubareka, L.H.
Shil, R.K.
Mojumder, S.
Sikdar, D.
Powiązania:
https://bibliotekanauki.pl/articles/80315.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Oxya velox
grasshopper
gut fluid
cellulolytic activity
xylanolytic activity
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors promote germination and initial growth of Monochoria vaginalis
Autorzy:
Xuan, T.D.
Anh, L.H.
Minh, T.N.
Khanh, T.D.
Powiązania:
https://bibliotekanauki.pl/articles/10926.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2016, 59
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First report of phytoplasma detection on sand olive, cowpea and alfalfa in Iraq
Autorzy:
Al-Kuwaiti, N.
Kareem, T.
Sadaq, F.H.
Al-Aadhami, L.H.
Powiązania:
https://bibliotekanauki.pl/articles/2084636.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
16SrII-D phytoplasma
16SrXIV-A phytoplasma
flat stem
in silico RFLP
white leaf
Opis:
The association of phytoplasma was investigated in sand olive [Dodonaea viscosa ssp. Angustifolia (L. f.) J.G. West], cowpea [Vigna unguiclata (L.)] Wap and alfalfa (Medicago sativa L.) plants exhibiting witches broom, fasciation and little leaf symptoms, respectively. Sequence analysis of ~1.7 kb DNA fragments amplified by P1/P7 primer set confirmed the association of ‘Candidatus Phytoplasma aurantifolia’ within symptomatic alfalfa, while ‘Ca. Phytoplasma cynodontis’ was associated within cowpea and sand olive.
Źródło:
Journal of Plant Protection Research; 2019, 59, 3; 428-431
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecdysichnia : a new ethological category for trace fossils produced by moulting
Autorzy:
Vallon, L. H.
Schweigert, G.
Bromley, R. G.
Röper, M.
Ebert, M.
Powiązania:
https://bibliotekanauki.pl/articles/191743.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Animal behaviour
ecdysis
Solnhofen lithographic limestones
Schwoimarken
Opis:
The shedding of exoskeletons is an important aspect of the lifecycle of some in vertebrates (mainly arthropods). To rid them selves of the old cuticula (= exuvia), these animals of ten have to thrash about, twist around or rub themselves against the sediment or other more or less solid objects. In softgrounds, this behaviour may create distinctive patterns that have to be regarded as trace fossils. Accordingly, some ichnospecies of Rusophycus have recently been interpreted as traces made during ecdysis. Most of the so-called “Schwoimarken” from the Solnhofen lithographic limestones (Upper Jurassic, SE Germany), usually interpreted as structures made by dead organisms swaying in response to water movements, must be understood as traces of arthropod ecdysis. In this context, we erect Harpichnus bartheli igen. et isp. nov. and propose the new ethological category, ecdysichnia, for moulting traces. In most “Schwoimarken” containing body-fossil remains other than arthropods, we see sediment displacement by scavenging arthropods rather than mortichnia (sensu Seilacher, 2007). We further propose inclusion of the recently erected category pupichnia for pupation chambers as a subcategory of ecdysichnia. In our opinion, pupation is a special form of moulting that does not justify the splitting of categories, as briefly noted by Vallon et al. (2013).
Źródło:
Annales Societatis Geologorum Poloniae; 2015, 85, 3; 433-444
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image compression-encryption algorithm combining compressive sensing with log operation
Autorzy:
Chen, R.-L.
Zhou, Y.
Luo, M.
Zhang, A.-D.
Gong, L.-H.
Powiązania:
https://bibliotekanauki.pl/articles/174009.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
image encryption
image compression
compressive sensing
log operation
Opis:
Based on compressive sensing and log operation, a new image compression-encryption algorithm is proposed, which accomplishes encryption and compression simultaneously. The proposed image compression-encryption algorithm takes advantage of not only the physical realizability of partial Hadamard matrix, but also the resistance of the chosen-plaintext attack since all the elements in the partial Hadamard matrix are 1, –1 or log 1 = 0. The proposed algorithm is sensitive to the key and it can resist various common attacks. The simulation results verify the validity and reliability of the proposed image compression-encryption algorithm.
Źródło:
Optica Applicata; 2018, 48, 4; 563-573
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Symulacja MES i optymalizacja prędkości gięcia w procesie kucia ciężkich, jednolitych wałów korbowych z ciągłym przebiegiem włókien metodą N-TR
FE simulation and bending speed optimization of N-TR continuous grain flow forging process for solid heavy crankshaft
Autorzy:
Zhang, L. H.
Zhang, Z. C.
Li, S. Y.
Cui, H.
Cui, H. X.
Powiązania:
https://bibliotekanauki.pl/articles/211742.pdf
Data publikacji:
2006
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Obróbki Plastycznej
Tematy:
ciężkie wały korbowe
kucie z ciągłym przebiegiem włókien
spęczanie
N-TR
symulacja MES
optymalizacja procesu
heavy crankshaft
continuous grain flow forging
upset forging
FE simulation
process optimization
Opis:
Autorzy przedstawili metodę N-TR (nowa TR) będącą nowym procesem kucia ciężkich, jednolitych wałów korbowych z ciągłym przebiegiem włókien. W metodzie N-TR mechaniczne sprzężenie spęczania z równoczesnym wyginaniem, spowodowane działaniem mechanizmu kolanowego w metodzie TR, zostało zlikwidowane dzięki zastosowaniu siłownika powodującego niezależne wyginanie, co umożliwia optymalizację procesu kucia. Przeprowadzono optymalizację procesu kucia ciężkiego wału korbowego typu 601 metodą N-TR korzystając z symulacji MES w programie DEFORM-3D. Badano związek stopnia wypełnienia wykrojów narzędzi z prędkością wyginania. Stwierdzono, że niższa prędkość wyginania na początku procesu i wyższa prędkość wyginania na końcu procesu sprzyjają wypełnieniu wykrojów. Uzyskano optymalne wypełnienie wykrojów narzędzi dla technicznie realnych prędkości wyginania.
N-TR (new TR) is a new continuous grain flow forging process for solid heavy crankshafts forming proposed by the authors. In N-TR process, the mechanical coupling of upsetting and bending action via the toggle mechanism in TR process is decoupled by an independent additional cylinder to provide bending action, which provides the feasibility of process optimization. In this paper, a heavy crankshaft modeled 601 was selected as a case study to optimize the N-TR process with FE simulation in DEFORM-3D. Relationship of die filling versus bending speed-stroke parameters was set up from the simulations, which shows that lower bending speed in the beginning stage and higher speed in the ending stage benefit die filling. Optimum die filling and engineering feasible speed-stroke parameters was acquired.
Źródło:
Obróbka Plastyczna Metali; 2006, 17, 2; 3-13
0867-2628
Pojawia się w:
Obróbka Plastyczna Metali
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Investigation Of Modified Heat Treatment Of AK64-Type Al-Si-Cu Sand Cast Alloy
Eksperymentalne badania zmodyfikowanej obróbki cieplnej odlewu piaskowego ze stopu Al-Si-Cu typu AK64
Autorzy:
Cupido, L. H.
Żak, P. L.
Mahomed, N.
Lelito, J.
Piwowarski, G.
Krajewski, P. K.
Powiązania:
https://bibliotekanauki.pl/articles/355727.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminium Al-Si-Cu cast alloy
T6 heat treatment
nucleation temperature
Al2Cu and Al-Fe-Si phases
aluminium Al-Si-Cu odlewane ze stopu
obróbka cieplna T6
temperatura zarodkowania
fazy Al2Cu i Al-Fe-Si
Opis:
An experimental investigation was conducted to observe and analyze the microstructural evolution of phases present in the AK64 Al-Si-Cu alloy subjected to a modified T6 heat treatment (HT). The AK64 alloy1 is the Polish alternative of the A319.0 ASM standard aluminium alloy. The modified T6 HT schedule with a higher temperature and shorter duration was applied in the solutioning process and lower quenching and higher artificial ageing temperature than the prescribed by the ASM standard were used. The cooling curves registered during the liberating of overheating and solidifying processes give important information on nucleation temperatures for the Al dendrite network, Al-Si eutectic reaction and precipitation of Cu-rich phases. Comparison of the as-cast and heat treated microstructures revealed predicted microstructural changes and also partial fragmentation of the Fe-rich phases was observed after the application of the modified HT programme.
Artykuł poświęcony jest obróbce cieplnej stopu AK64, który jest odpowiednikiem stopu ASM: A319.0. W badaniach zastosowano zmodyfikowaną obróbkę cieplną T6 o podwyższonej (w stosunku do procedury T6 HT – ASM) temperaturze wyżarzania i skróconym czasie starzenia naturalnego po przesyceniu w wodzie. Obserwacje struktury stopu po obróbce cieplnej wykazały dużą zgodność ze strukturami przewidzianymi na podstawie przeprowadzonych symulacji numerycznych. Dodatkowo określono wartości temperatury odpowiadającej początkowi zarodkowania fazy α(Al), reakcji eutektycznej Al-Si oraz wydzielania z roztworu fazy bogatej w Cu. Opisano również częściową fragmentację fazy zawierającej Fe, będącą następstwem zastosowanej zmodyfikowanej obróbki cieplnej.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 3; 2397-2402
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of bamboo vinegar powder on the expression of the immune-related genes MyD88 and CD14 in weaning piglets
Autorzy:
Qin, W.Y.
Gan, L.N.
Dong, L.
Yu, L.H.
Wu, S.L.
Bao, W.B.
Powiązania:
https://bibliotekanauki.pl/articles/2087674.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bamboo vinegar powder
pig
antibiotics
MyD88 gene
CD14 gene
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 3; 525-532
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of genetic diversity of local-colored rice landraces using SSR markers
Autorzy:
Thi Hue, H.
Nghia, L.T.
Minh, H.T.
Anh, L.H.
Thi Thu Trang, L.
Khanh, T.D.
Powiązania:
https://bibliotekanauki.pl/articles/11570.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2018, 67
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodological aspects of the quantification of dispersible clay and its relationship with soil properties along a catena under no-till management
Autorzy:
de Paula, A.L.
Giarola, N.F.B.
de Lima, R.P.
Wiecheteck, L.H.
da Silva, A.P.
Powiązania:
https://bibliotekanauki.pl/articles/2082881.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil structure
erodibility
aggregation
Opis:
Continuous no-till management of sloping cultivated areas can promote soil property transformations, causing changes in aggregation and dispersion. The objective of this work was (i) to quantify the readily and mechanically dispersible clays using different methods and (ii) to examine their relationships with soil properties along a catena under no-till management. For this study, the catena was divided into three distinct parts: crest, upper-slope and mid-slope positions. Undisturbed soil cores were sampled at each slope position to determine the following soil properties: organic carbon, Ca2+, Mg2+, K+, Al3+, P, pH, cation exchange capacity and total clay content. Additionally, the levels of readily dispersible clay were measured using turbidimeter and hydrometer methods, whereas mechanically dispersible clay was quantified using the turbidimeter method. We observed high influence of total clay content and organic carbon on soil flocculation; P, Mg2+ and cation exchange capacity were positively related to clay dispersion. Soil management and water transport downslope are probably influencing changes in soil properties and determining the distribution of dispersible clay contents along the catena. No relationships were observed between readily dispersible clay measured using turbidimeter and hydrometer in terms of quantity. Hydrometer and turbidimeter measurements can deliver significantly different results regarding dispersible clay quantification, potentially leading to misinterpretations concerning the amount of clay dispersed in water.
Źródło:
International Agrophysics; 2020, 34, 2; 273-280
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An elbow planar manipulator driven by induction motors using sliding mode control for current loop
Autorzy:
Diniz, E. C. de
Júnior, A. B. S.
Honório, D. A.
Barreto, L. H. S. C.
Reis, L. L. N. dos
Powiązania:
https://bibliotekanauki.pl/articles/206213.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
sliding mode control
induction motor drives
manipulators
digital signal processor
PI controllers
Opis:
The control of a planar elbow manipulator driven by a squirrel-cage induction motor using sliding mode control (SMC) is presented in this paper. The modeling of the manipulator mechanical coupling as a load applied to the induction motor shaft is developed. This has direct influence on both dq currents, which are chosen as the sliding manifold instead of controlling both mechanical and electrical parts as individual processes like most industrial manipulators do. Conventional proportional-integral (PI) controllers are used for each loop, implying easy design procedure and implementation with low computational effort. The system can then be implemented by using a digital signal processor (DSP) and applied in industrial environments. Simulation and experimental results on a real manipulator are shown to validate the proposed control scheme. The results show that there is low steady-state error for the manipulator position.
Źródło:
Control and Cybernetics; 2012, 41, 2; 395-413
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pressure Investigation of Tunneling in an InAlAs-InGaAs Double Barrier Structure
Autorzy:
Cury, L.
Dmowski, L. H.
Celeste, A.
Portal, J. C.
Davies, M.
Heath, M.
Sivco, D. L.
Cho, A. Y.
Powiązania:
https://bibliotekanauki.pl/articles/1879918.pdf
Data publikacji:
1991-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
07.35.+k
73.20.Dx
79.80.+w
Opis:
AnIn$\text{}_{0.52}$Al$\text{}_{0.48}$As-In$\text{}_{0.53}$Ga$\text{}_{0.47}$As double-barrier structure was studied under hydrostatic pressures up to 15 kbar. Two resonances in the I(V) curves are observed. The possible tunneling mechanisms to interpret this effect are analysed.
Źródło:
Acta Physica Polonica A; 1991, 79, 2-3; 199-202
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hybrid position control technique of induction motor drive
Autorzy:
Júnior, A. B. S.
Diniz, E. C. de
Honório, D. A.
Barreto, L. H. S. C.
Reis, L. L. N. dos
Powiązania:
https://bibliotekanauki.pl/articles/206685.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
vector control
predictive control
hybrid control
fuzzy logic
Opis:
This paper presents the study and implementation of a new vector control strategy using a hybrid control technique applied to the mechanical position loop aiming to obtain a system that acts in the fractional horsepower motor driver running at near zero frequency. For this purpose, some control techniques are employed to check which one has the best performance regarding this type of application. The use of three control techniques is considered: the Proportional-Integral-Derivative (PID) controller with fixed gain; the Generalized Predictive Control (GPC) controller; and a hybrid controller. The last one behaves as both PID and GPC using fuzzy logic in order to achieve improved system performance. Simulation and experimental results are shown and discussed to demonstrate the merits of the proposed approach.
Źródło:
Control and Cybernetics; 2013, 42, 4; 754-772
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fungal spores in four catholic churches in the metropolitan area of Monterrey, Nuevo León State, Mexico – First study
Autorzy:
Estrada, A.R.
Torres, E.M.
Vazquez, M.A.A.
Pinero, J.L.H.
Lucio, M.A.G.
Martinez, S.M.S.
Powiązania:
https://bibliotekanauki.pl/articles/52132.pdf
Data publikacji:
2015
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2015, 22, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Association of hemophagocytic lymphohistiocytosis with kidney lesions in acute African swine fever virus infection
Autorzy:
Karalyan, N.Yu.
Tatoyan, M.R.
Semerjyan, A.B.
Nersisyan, N.H.
Semerjyan, Z.B.
Hakobyan, L.H.
Karalyan, Z.A.
Powiązania:
https://bibliotekanauki.pl/articles/6239.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Parazytologiczne
Źródło:
Annals of Parasitology; 2018, 64, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection of significant wavelengths for identifying and classifying Fusarium oxysporum during the incubation period and water stress in Solanum lycopersicum plants using reflectance spectroscopy
Autorzy:
Ortiz, J.C.M.
Carvajal, L.M.H.
Fernandez, V.B.
Powiązania:
https://bibliotekanauki.pl/articles/65540.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Spectroscopy has become one of the most used non-invasive methods to detect plant diseases before symptoms are visible. In this study it was possible to characterize the spectral variation in leaves of Solanum lycopersicum L. infected with Fusarium oxysporum during the incubation period. It was also possible to identify the relevant specific wavelengths in the range of 380–1000 nm that can be used as spectral signatures for the detection and discrimination of vascular wilt in S. lycopersicum. It was observed that inoculated tomato plants increased their reflectance in the visible range (Vis) and decreased slowly in the near infrared range (NIR) measured during incubation, showing marked differences with plants subjected to water stress in the Vis/NIR. Additionally, three ranges were found in the spectrum related to infection by F. oxysporum (510–520 nm, 650–670 nm, 700–750 nm). Linear discriminant models on spectral reflectance data were able to differentiate between tomato varieties inoculated with F. oxysporum from healthy ones with accuracies higher than 70% 9 days after inoculation. The results showed the potential of reflectance spectroscopy to discriminate plants inoculated with F. oxysporum from healthy ones as well as those subjected to water stress in the incubation period of the disease.
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:
Engineering the optical and mechanical properties exhibited by a titanium dioxide thin film with gold nanoparticles
Autorzy:
Morales-Bonilla, S
Torres-Torres, C
Trejo-Valdez, M
Torres-Torres, D
Urriolagoitia-Sosa, G
Hernandez-Gomez, L H
Urriolagoitia-Calderon, G
Powiązania:
https://bibliotekanauki.pl/articles/174855.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
optical Kerr effect
nonlinear optics
nanomaterials
Opis:
Thermo-optic and electrostrictive contributions to the nonlinear refractive index were observed in a titanium dioxide thin film with embedded gold nanoparticles. A sol–gel method was employed for preparing thin solid film samples. The nanosecond nonlinear optical properties and the Young’s modulus parameter were changed by shifting the optical absorption band associated with the localized surface plasmon of resonance of the gold nanoparticles with platinum. The third order nonlinear optical phenomena exhibited by the sample were induced by the second harmonic of a Nd-YAG laser with 532 nm wavelength; the nonlinear optical measurements were obtained by monitoring the transmittance and the amplitude modification for the vectorial components of the electric fields in a two-wave interaction. Optical evaluations were confirmed considering a straightforward measurement of the change in the refractive index of the sample when the sample was located in a Michelson interferometer.
Źródło:
Optica Applicata; 2013, 43, 4; 651-661
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Induction, growth and paclitaxel content of needle- and petiole-derived calli in Himalayan yew (Taxus wallichiana Zucc.) under light-emitting diodes
Autorzy:
Nhut, D.T.
Nguyen, P.L.H.
Don, N.T.
Hien, N.T.T.
Huy, N.P.
Nam, N.B.
Vinh, B.T.
Luan, T.C.
Powiązania:
https://bibliotekanauki.pl/articles/19361.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2014, 56, 2
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of salt on growth of rice landraces in Vietnam
Autorzy:
Anh, L.H.
Hue, H.T.
Quoc, N.K.
Nghia, L.T.
Trung, K.H.
Trung, T.N.
Trang, D.H.
Xuan, T.D.
Khanh, T.D.
Powiązania:
https://bibliotekanauki.pl/articles/10833.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2016, 59
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł

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