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Tytuł:
Nowe obrabiarki firmy DMG MORI
New DMG MORI machine-tools
Autorzy:
Matuszewski, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/950892.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo AWART
Tematy:
DMG MORI
Open House
machine tool
innovation
producent obrabiarek
model obrabiarki
Opis:
Firma DMG MORI to ścisła czołówka wśród producentów obrabiarek. Ta międzynarodowa firma w jednym ze swoich zakładów w Pfronten co roku organizuje imprezę, na której prezentuje nowe obrabiarki. Zaproszeni goście mogą zapoznać się z zakładem, a także z jego produktami. W artykule przedstawiono wrażenia uczestnika tegorocznej edycji imprezy.
DMG MORI is a leading manufacturer of machinetools. The international company holds an annual event at one of its plants in Pfronten, where it presents the new machine-tools. Invited guests can get acquainted with the plant and its products. In this paper the impression of the participants of this year’s editions of the event were presented.
Źródło:
Obróbka Metalu; 2019, 1; 26-28
2081-7002
Pojawia się w:
Obróbka Metalu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combining ability analysis of seven silk yield attributes in silkworm, Bombyx mori L.
Autorzy:
Bhargava, S K
Powiązania:
https://bibliotekanauki.pl/articles/2048119.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
silkworm
silk yield
Bombyx mori
combining ability
Opis:
The combining ability effects of five silkworm (Bombyx mori L.) strains and their 20 F₁'s including reciprocals were analysed in a 5x5 diallel cross for seven silk yield attributes, viz. effective rate of rearing (ERR), a measure of survival, cocoon yield, cocoon weight, shell weight, raw silk percentage, silk filament length/cocoon and silk reelability. Higher values of specific combining ability (SCA) than the corresponding general combining ability (GCA) for all the attributes except ERR and cocoon yield are indicative of non-additive gene action. The parental strain JC2P was the best general combiner for all the attributes, except cocoon yield. The highest general combining ability effect for cocoon yield was shown by N4. The highest desirable or positive SCA effects resulted from N4 × SH2 (all the attributes except shell weight), JC2P × 14M (all the attributes except cocoon weight and shell weight), 14M × SH2 (all the attributes except ERR), N4 × SPJ1 (all the attributes except shell weight and raw silk percentage). Only one reciprocal, namely SPJ1 × N4, showed positive effects for all the attributes except silk reelability. The improvement of cocoon yield through mass selection followed by intermating and the use of the parental strain JC2P in future cross breeding are discussed.
Źródło:
Journal of Applied Genetics; 1995, 36, 1; 59-67
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trendy obserwowane w maszynach technologicznych na przykładzie firmy DMG MORI
Trends observed in technological machines using the example of DMG MORI
Autorzy:
Styp-Rekowski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/1818869.pdf
Data publikacji:
2020
Wydawca:
Wydawnictwo AWART
Tematy:
DMG MORI
cutting machine
trend in machine-tool construction
modularity constructional structure
modułowość konstrukcji
maszyna do cięcia
Opis:
W artykule przedstawiono wrażenia z dorocznej imprezy Open House jaką organizuje czołowy w skali światowej producent obrabiarek – firma DMG MORI w swojej siedzibie w Pfronten. W relacji wskazano trendy, które wdraża w swojej produkcji firma, a także te, które sama wyznacza. Na podstawie obserwacji można jednoznacznie stwierdzić, że obrabiarki firmy DMG MORI reprezentują najwyższy światowy poziom rozwiązań konstrukcyjnych.
In the paper impression from annual Open House event organized by the worlds' leading machine tools manufacturer DMG MORI in its headquarter I Pfronten were presented. The relation indicates the trends that the company implements in its production, as well as those that it sets itself. On the ground of observations it can be clearly stated that DMG MORI machine-tools represent the world's highest level of constructional solutions.
Źródło:
Obróbka Metalu; 2020, 1; 20--24
2081-7002
Pojawia się w:
Obróbka Metalu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elastic solutions based on the Mori-Tanaka scheme for pressurized functionally graded cylinder
Autorzy:
Eker, Mehmet
Yarımpabuç, Durmu
Yıldırım, Ali
Çelebi, Kerimcan
Powiązania:
https://bibliotekanauki.pl/articles/1839733.pdf
Data publikacji:
2020
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
FGM
functional gradient material
pseudospectral Chebyshev method
Mori-Tanaka homogenization
cylindrical pressure vessel
materiał funkcjonalnie gradientowy
cylindryczny zbiornik ciśnieniowy
pseudospektralna metoda Czebyszewa
metoda Czebyszewa
homogenizacja Mori-Tanaka
Opis:
In this paper, an elastic analysis of a thick-walled functionally graded cylinder subjected to internal pressure is examined. Material properties for the isotropic material are estimated to obey the Mori-Tanaka homogenization scheme through the thickness. The resulting two-point irregular boundary value problem is solved by the pseudospectral Chebyshev method that converts the boundary value problem to the system of equations, which can be solved by any appropriate decomposition method. Benchmark solutions are used to validate the method. The effect of the arbitrarily chosen volume fraction index is demonstrated for stress and displacement distributions. The effective stresses for different inner radius and volume fraction index are also discussed.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 4; 57-68
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elastic solutions based on the Mori-Tanaka scheme for pressurized functionally graded cylinder
Autorzy:
Eker, Mehmet
Yarımpabuç, Durmu
Yıldırım, Ali
Çelebi, Kerimcan
Powiązania:
https://bibliotekanauki.pl/articles/1839749.pdf
Data publikacji:
2020
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
FGM
functional gradient material
pseudospectral Chebyshev method
Mori-Tanaka homogenization
cylindrical pressure vessel
materiał funkcjonalnie gradientowy
cylindryczny zbiornik ciśnieniowy
pseudospektralna metoda Czebyszewa
metoda Czebyszewa
homogenizacja Mori-Tanaka
Opis:
In this paper, an elastic analysis of a thick-walled functionally graded cylinder subjected to internal pressure is examined. Material properties for the isotropic material are estimated to obey the Mori-Tanaka homogenization scheme through the thickness. The resulting two-point irregular boundary value problem is solved by the pseudospectral Chebyshev method that converts the boundary value problem to the system of equations, which can be solved by any appropriate decomposition method. Benchmark solutions are used to validate the method. The effect of the arbitrarily chosen volume fraction index is demonstrated for stress and displacement distributions. The effective stresses for different inner radius and volume fraction index are also discussed.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 4; 57-68
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pinellia ternata agglutinin produced in Bombyx mori cells exhibits bioactivity
Autorzy:
Xu, Tao
Wang, Bo
Wang, Liya
Zhang, Yaozhou
Lv, Zhengbing
Powiązania:
https://bibliotekanauki.pl/articles/1039738.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Pinellia ternata agglutinin
silkworm bioreactor
plant lectin
Bombyx mori cells
Opis:
Pinellia ternata agglutinin (PTA) is highly homologous to many other monocot mannose-binding lectins which reportedly possess antitumor activities. Its production in silkworm cells has great application potential because the baculovirus expression system can produce post-translationally modified proteins at low cost. In the current study, the pta gene was cloned and expressed in silkworm cells, and the expressed protein was analyzed using a hemagglutination assay. A preliminary in vitro study on its anti-proliferative activity was performed. The results show that the recombinant PTA with an apparent molecular mass of 29 kDa can hemagglutinate rabbit erythrocytes and this activity can be inhibited by D-mannan at a low concentration. In addition, the recombinant hemagglutinin exhibited a dose-dependent anti-proliferative activity on hepatoma cells. The results of the current study suggest that PTA and other important bioactive proteins could be produced by silkworm bioreactor for biomedicine research and application.
Źródło:
Acta Biochimica Polonica; 2012, 59, 2; 231-236
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative profile analysis of mulberry silkworm Bombyx mori L. (CSR2XCSR4)
Autorzy:
Reddy, B.V.
Divya, P.
Anitha, M.
Powiązania:
https://bibliotekanauki.pl/articles/11923.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
quantitative profile analysis
mulberry silkworm
Bombyx mori
growth parameter
crossbreed
Opis:
Bombyx mori. L. (CSR2XCSR4) is a bivolitne crossbreed that produces high quantity of silk. The weights of worms and glands are directly related to the yield of silk, higher larval weights leads to higher silk production. In the present study, quantitative parameters of 5th instar and pupal stages of silkworm larvae were observed. The analysis of quantitative estimation showed that the maximum weights and lengths of silk gland and silk worm were recorded on 7th day of 5th instar larval stage. The day dependent variation in protein concentration was observed in total silk gland 5th instar larval and pupal stages.
Źródło:
International Letters of Natural Sciences; 2015, 07
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elastic analysis of polymeric cylinders reinforced with carbon nanotubes
Autorzy:
Hosseini, H.
Kolahchi, R.
Heydari, M.
Powiązania:
https://bibliotekanauki.pl/articles/122599.pdf
Data publikacji:
2016
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
CNT
carbon nanotubes
cylinder
elastic analysis
Mori-Tanaka model
nanorurki węglowe
model Mori-Tanaka
nanotechnologia
Opis:
In this work, stress analysis of a polymeric cylinder’s cylindrical shell reinforced with carbon nanotubes (CNTs) is investigated. The cylinder is subjected to mechanical and thermal loadings. All the equivalent mechanical and thermal properties of nano-composite cylinder are obtained using Mori-Tanaka model. Based on equilibrium, the governing equation is derived. Using an exact solution, the stresses and radial displacement distributions in the structure are calculated. The effects of CNTs volume percent on the stresses and radial displacement for internal and external pressure cylinder are the main discussion of this study. Numerical results indicate that with increasing CNTs volume percent, the stresses decrease. However, this shows the important effect of nanotechnology in stress reduction of cylinder which may be useful in sensors and actuators.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2016, 15, 2; 31-39
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetism of Higher Borides
Autorzy:
Mori, T.
Powiązania:
https://bibliotekanauki.pl/articles/1813620.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Je
75.50.Ee
Opis:
Magnetism of borides which contain the $B_{12}$ icosahedra as a structural building block are attracting increasing interest since they exhibit unexpectedly strong magnetic interactions, despite being magnetically dilute f-electron insulators. The magnetic behavior among the different compounds has also been found to be diverse. The f-electron dependence of magnetic B_{12} icosahedra borides is compared, and found to be different from conventional mechanisms. The $TbB_{25}$ system is also investigated further and the transition is assigned to a typical antiferromagnetic transition.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 231-234
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
REVIEW OF Laura Mori (ed.), Observing Eurolects: Corpus analysis of linguistic variation in EU law.
RECENZJA KSIĄŻKI Observing Eurolects: Corpus analysis of linguistic variation in EU law, red. Laura Mori
Autorzy:
MATTILA, Heikki E. S.
Powiązania:
https://bibliotekanauki.pl/articles/921275.pdf
Data publikacji:
2019-11-28
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Źródło:
Comparative Legilinguistics; 2019, 38, 1; 83-94
2080-5926
2391-4491
Pojawia się w:
Comparative Legilinguistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
"Melius est mori quam vivere"- wizerunek śmierci w polskich drukowanych oracjach pogrzebowych XVII wieku
"Melius est mori quam vivere"- representation of death in polish printed funeral orations in the 17 th century
Autorzy:
Kicińska, Urszula
Powiązania:
https://bibliotekanauki.pl/articles/1216064.pdf
Data publikacji:
2012
Wydawca:
Instytut Wydawniczy Księży Misjonarzy Redakcja "Nasza Przeszłość"
Opis:
Eschatological issues became the primary part of the17th century funeral orations. Such situation was influenced by the parenetic character of this source as well as high mortality of people in the Baroque era, caused by wars, natural calamities and disastrous hygienic conditions. The perception of female and male death at that time was different. Male death was considered to be heroic, meritorious and – most of all – public and thus worthy of presentation in culture. Female death, however, usually took place in the privacy of home, during a hard childbirth or as a result of illness, and thus was considered to be common, not worthy of public view. In the Baroque era, the model of good death became popular. It presumed an acceptance of the transient nature of life and preparation for death’s arrival by reading ars bene moriendi manuals. Good death was also awaited through listening to sermons of thanatological subjects, contemplating pictures depicting death scenes and monthly or annual “trainings” in dying. Special devotional services in which the members of religious confraternities participated were popular at that time. Charity and mercy towards both the living and the dead were also valued. Moreover, good death in old Poland was understood as natural death preceded by suffering and illnesses, as they allowed for the completion of all earthly issues and parting with family. The sacraments (of penance, Holy Communion and holy oils), which the moribund received for his last journey, began to play a very important role at that time. The perusal of funeral sermons leads to a conclusion that thoughts about death and life beyond the grave accompanied the people of the Baroque era almost all the time. Because of that, people strove to lead a pious and virtuous life and apologize to God for bad deeds, in order to deserve eternal life in heaven.
Źródło:
Nasza Przeszłość. Studia z dziejów Kościoła i kultury katolickiej w Polsce; 2012, 118; 91-108
0137-3218
2720-0590
Pojawia się w:
Nasza Przeszłość. Studia z dziejów Kościoła i kultury katolickiej w Polsce
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nutritional parameters of CSR2 and PM X CSR2 strains of Bombyx mori fed with Neutral red as a food supplement
Autorzy:
Anto, Anumol
Vasugi, S. R.
Ganga, S.
Powiązania:
https://bibliotekanauki.pl/articles/1177436.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bombyx mori
efficiency conversion
neutral red
nutritional traits
Opis:
Recently, there are various methods to incorporate additional properties into silkworm silk, during its production in the silk gland itself. These advanced properties involve additional mechanical strength, colour, ultraviolet resistance, etc. and it is utilized for a wide range of applications. The property which focused in this study is the colour, an important quality attribute of silk. Effect of neutral red, a vital dye used as dietary supplement and its nutritional effects on Bombyx mori (B. mori) along with the colour manipulating efficiency on the larvae were observed. The colour change noticed from larval to cocoon stage confirms its efficiency to get into the silk gland of the animal crossing through the integument and haemolymph. The results of the observed nutritional parameters confirms that the selected dye in the selected concentration is suitable to produce colour cocoons without disturbing the nutritional traits such as ingesta, digesta, approximate digestibility percentage, growth rate, efficiency conversion rate, etc. of the larva. The findings elucidates that more vital dyes may use for the production of colour silk without causing any harm to the silkworm physiology. As the dye has no harmful effect in the dietary parameters, which plays a major role in the growth of the larva and production of silk, it is assumed that it may not affect the economical and biochemical parameters also. However, it has to be confirmed by further analyses.
Źródło:
World Scientific News; 2018, 103; 157-166
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular cloning, expression and characterization of Bmserpin-2 gene from Bombyx mori
Autorzy:
Pan, Ye
Xia, Hengchuan
Lü, Peng
Chen, KePing
Yao, Qin
Chen, Huiqin
Gao, Lu
He, Yuanqing
Wang, Lin
Powiązania:
https://bibliotekanauki.pl/articles/1040486.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
serpin-2
Bombyx mori
bioinformatics
subcellular location
qPCR
Opis:
Serpins are a broadly distributed family of protease inhibitors. In this study, the gene encoding Bombyx mori serpin-2 (Bmserpin-2) was cloned and expressed in E. coli. The Bmserpin-2 cDNA contains a 1125 bp open reading frame (ORF). The deduced protein has 374 amino-acid residues, contains a conserved SERPIN domain and shares extensive homology with other invertebrate serpins. RT-PCR analysis showed that Bmserpin-2 was expressed in all developmental stages of B. mori larvae and various larval tissues. Subcellular localization analysis indicated that Bmserpin-2 protein was located in the cytoplasm. Interestingly, real-time quantitative PCR revealed that the expression of Bmserpin-2 in the midgut of susceptible B. mori strain 306 significantly increased at 72 hours post inoculation (hpi) when infected with BmNPV. However, there was no significant increase of the Bmserpin-2 expression in resistant strain NB infected with BmNPV. Thus, our data indicates that Bmserpin-2 may be involved in B. mori antiviral response.
Źródło:
Acta Biochimica Polonica; 2009, 56, 4; 671-677
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative proteomic analysis of Bombyx mori hemolymph and fat body after calorie restriction
Autorzy:
Chen, Huiqing
Li, Yijia
Chen, Keping
Yao, Qin
Li, Guohui
Wang, Lin
Powiązania:
https://bibliotekanauki.pl/articles/1040312.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
calorie restriction
Bombyx mori
two-dimensional gel electrophoresis
proteomic analysis
MALDI-TOF/TOF MS
Opis:
Calorie restriction (CR) is known to extend life span from yeast to mammals. To gain an insight into the effects of CR on growth and development of the silkworm Bombyx mori at protein level, we employed comparative proteomic approach to investigate proteomic differences of hemolymph and fat body of the silkworm larvae subjected to CR. Thirty-nine differentially expressed proteins were identified by MALDI TOF/TOF MS. Among them, 19 were from the hemolymph and 20 from the fat body. The hemolymph of the CR group contained two down-regulated and 17 up-regulated proteins, whereas the fat body contained 15 down-regulated and five up-regulated ones. These proteins belonged to those functioning in immune system, in signal transduction and apoptosis, in regulation of growth and development, and in energy metabolism. Our results suggest that CR can alter the expression of proteins related to the above four aspects, implying that these proteins may regulate life span of the silkworm through CR.
Źródło:
Acta Biochimica Polonica; 2010, 57, 4; 505-511
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of effective properties of fiber-reinforced composite laminates
Autorzy:
Skrzat, A.
Stachowicz, F.
Powiązania:
https://bibliotekanauki.pl/articles/102150.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
micromechanics
Mori-Tanaka
multilayer composite
Opis:
The determination of effective mechanical properties of multi-layer composite is presented in this paper. Computations based on finite element method predicting properties of inhomogeneous materials require solving huge tasks. More effective is Mori-Tanaka approach, typical for micromechanics problems. For regularly distributed fibers closed-forms for effective composite material properties are possible to derive. The results of homogenization are used in strength analysis of the composite pressure vessel.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 22; 56-59
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of mulberry leaves treated with seed powder cowpea, Vigna unguiculata (L) for feeding the fifth instar larvae of silkworm, Bombyx mori (L) (Race: PM x CSR2)
Autorzy:
Khyade, Vitthalrao B.
Gosavi, Atharv Atul
Powiązania:
https://bibliotekanauki.pl/articles/1191456.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bombyx mori L.
Morus alba L.
Vigna unguiculata
digestive enzymes
midgut
Opis:
The present attempt was to screen the changes in the cocoon parameters; silk filament parameters and activities of biochemical reactions catalyzed by the midgut enzymes fifth instsr larvae of silkworm fed with mulberry leaves treated with aqueous solution of seed powder of Cowpeas (Vigna unguiculata). The cowpea seed powder was dissolved in distilled water and diluted to 2.5%, 5%, 7.5%, and 10% concentrations. Fresh mulberry leaves were dipped in each concentration of aqueous solution of cowpea seed powder for half an hour. 1000 ml solution was used for 100 grams of mulberry leaves. Treated mulberry leaves were drained off completely and then used for feeding. The mulberry leaves were fed five times per day at the rate of 100 grams per 100 larvae for each time. Untreated group of larvae were feed with untreated mulberry leaves. Water treated group of larvae were feed with water treated mulberry leaves. The experimental groups of larvae were feed with feed separately with 2.5 percent cowpea treated; 5.00 percent cowpea treated; 7.5 percent cowpea treated and 10.00 percent cowpea treated mulberry leaves. Treating the mulberry leaves with various concentrations of aqueous solutions of cowpea seed powder and feeding to the fifth instar larvae of multivoltine cross breed race of silkworm, Bombyx mori (L) was found reflected into significant improvement in the weight of cocoon (31.862 Percentages); cocoon shell weight (52.336 percentages); pupal weight (26.336 percentages) and shell ratio. There was significant improvement in the silk filament length ( 00.323 percentages); silk filament weight ( 21.317 percentages) and denier scale of silk filament. Midgut enzymes (Protease, Amylase, Trehalase, Sucrase and Urease) were found influenced through treating mulberry leaves with cowpea seed powder and feeding to the fifth instar larvae of multivoltine cross breed race of silkworm, Bombyx mori (L) (Race: PM x CSR2). The contents of cowpea seeds may be associated with improvement in the growth and development through increased pattern of protein turn over and overall metabolism.
Źródło:
World Scientific News; 2016, 40; 147-162
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of effective properties of piezocomposites by the subregion BEM-Mori-Tanaka approach
Analiza własności zastępczych piezokompozytów połączona metodą elementów brzegowych i Mori-Tanaki
Autorzy:
Dziatkiewicz, G.
Powiązania:
https://bibliotekanauki.pl/articles/368936.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
metoda elementów brzegowych
pola sprzężone
materiały piezoelektryczne
homogenizacja
własności materiałowe
boundary element method
coupled fields
piezoelectric materials
homogenization
material properties
Opis:
Recently, many approaches have been proposed to estimate the effective properties of composites. The most typical are: the self-consistent method and the Mori-Tanaka method. However, they are restricted to simple geometries of phases. Also for complex constitutive laws the analytical results are complicated. On the other hand, the combination of numerical methods and these approaches gives an efficient computational scheme for estimating effective properties of composite materials. In this paper the hybrid subregion boundary element method (BEM) and Mori-Tanaka approach is implemented to solve coupled field equations of linear piezocomposites in the unit cell approach and then to determine the effective properties. To obtain the BEM fundamental solutions, the Stroh formalism is used. The numerical examples demonstrate an effectiveness of the BEM-Mori-Tanaka approach.
Do wyznaczania własności zastępczych kompozytów zostało opracowanych wiele metod. Do najbardziej znanych należą metody: samospójna (estymator wewnętrznie zgodny) oraz Mori-Tanaki. Są one jednak ograniczone do prostych geometrii faz kompozytu. Również dla złożonych związków konstytutywnych zależności analityczne są skomplikowane. Z drugiej strony, kombinacja metod numerycznych i wspomnianych metod mikromechaniki daje efektywne narzędzie obliczeniowe określania własności zastępczych materiałów kompozytowych. W niniejszej pracy opisano hybrydową metodę bazującą na połączeniu sformułowania metody elementów brzegowych dla podobszarów i metody Mori-Tanaki, którą zastosowano do rozwiązania równań pól sprzężonych liniowych piezokompozytów dla komórki elementarnej, aby wyznaczyć własności zastępcze. Do otrzymania rozwiązań fundamentalnych metody elementów brzegowych zastosowano formalizm Stroha. Przykłady numeryczne pokazują efektywność opracowanej metody.
Źródło:
Mechanics and Control; 2011, 30, 4; 194-202
2083-6759
2300-7079
Pojawia się w:
Mechanics and Control
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The uncanny: development and perspectives on the future
Autorzy:
Mrówczyńska, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/2048769.pdf
Data publikacji:
2021-12-23
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
Derrida
Cixous
the uncanny
Sigmund Freud
Ernst Jentsch
Mori
Todorov
Opis:
In 1919 Sigmund Freud raised the interest in the uncanny by claiming in his essay "Das Unheimliche" that something can be familiar and unfamiliar at the same time. Since the emergence of the concept in the 20th century, many scholars have presented their own definition of the uncanny. The concept originates from the German unheimlich but the meaning reaches far beyond its dictionary definition. As Masschelein suggests, the word itself "is untranslatable qua form and content" (Masschelein 2011, 7) and as long as the uncanny cannot be understood literally, the ambiguity of the term can lead to a multitude of interpretations. The aim of this paper is to explore how the perception of the uncanny has been changing through the years in connection with the Freudian definition. The paper offers an overview of various interpretations of the concept starting from 1906 until today. The juxtaposition of the most significant views on the uncanny shows how the concept has gradually formed a basis for various fields of study such as literature and art. The paper presents future perspectives of the uncanny where it no longer refers only to the motif of the double or supernatural elements but it also tackles the problems of body transformations and politics.
Źródło:
Forum for Contemporary Issues in Language and Literature; 2021, 2; 50-59
2391-9426
Pojawia się w:
Forum for Contemporary Issues in Language and Literature
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilisation of IoT and sensing for machine tools
Autorzy:
Fujishima, Makoto
Mori, Masahiko
Narimatsu, Koichiro
Irino, Naruhiro
Powiązania:
https://bibliotekanauki.pl/articles/99978.pdf
Data publikacji:
2019
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
sensing
IoT
machine tools
automation
Opis:
Strong requirements for automation in the production processes using machine tools have been increasing due to lack of high-skilled machining engineers. Automation used to be utilised in mass production, but it is also necessary in medium- to low-volume production recently. Next requirements will be monitoring or sensing functions to make the following possible: prompt service when the machine stops; detection of abnormality before the machine breaks down; and compensation of thermal displacement to ensure machining accuracy. These now need to be performed automatically in place of operators so that abnormality can be detected during machining operation. In this paper core technologies to support automation system will be discussed which are operation monitoring, predictive maintenance, sensing interface and thermal displacement compensation as a sensing application.
Źródło:
Journal of Machine Engineering; 2019, 19, 1; 38-47
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected aspects of manufacturing and strength evaluation of porous composites based on numerical simulations
Wybrane aspekty formowania oraz wytrzymałości polimerowych kompozytów porowatych w oparciu o symulacje numeryczne
Autorzy:
Frącz, W.
Janowski, G.
Ryzińska, G.
Powiązania:
https://bibliotekanauki.pl/articles/195066.pdf
Data publikacji:
2017
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
microcellular composites
numerical simulations
Digimat
ANSYS
Mori-Tanaka homogenization method
kompozyty mikroporowate
symulacje numeryczne
homogenizacja metodą Mori-Tanaka
Opis:
In this paper the numerical simulations of microcellular injection molding process for polymer composite with glass fiber for variable content of pores were carried out. In order to evaluate the strength of the three-phase composite structure (polypropylene PP as a matrix, 20% wt. of glass fiber GF and 1-9 % vol. of the pores) a microstructural analysis was performed and strength calculations were conducted using the Mori-Tanaka homogenization model. The analyzed product (the base of industrial mop) was subjected to the loading in Ansys 14.5 commercial code, considering the impact of pores content on its mechanical properties. Furthermore, the paper presents the visualization of calculated composite microstructure for variable pores contents.
W pracy przeprowadzono symulacje numeryczne procesu wtryskiwania z mikroporowaniem wypraski z kompozytu polimerowego z włóknem szklanym dla zmiennej zawartości objętościowej porów. W celu oceny wytrzymałościowej trójfazowej struktury kompozytu (matryca polipropylenowa PP, 20% wag. włókien szklanych WS oraz 1-9% obj. porów) wykonano analizę mikrostrukturalną oraz przeprowadzono obliczenia wytrzymałościowe z użyciem modelu homogenizacji Mori-Tanaka. Analizowany wytwór (element mopa przemysłowego) poddano symulacji obciążenia w programie Ansys 14.5, określając wpływ zmiennego stopnia porowania na jego właściwości wytrzymałościowe. Ponadto w pracy przedstawiono wizualizację prognozowanej mikrostruktury dla kompozycji przy zmiennym stopniu porowatości kompozytu.
Źródło:
Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika; 2017, z. 89 [295], 1; 31-43
0209-2689
2300-5211
Pojawia się w:
Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kompozyty WPC wytwarzane w procesie porowania mikrokomórkowego : prognozowanie i ocena właściwości mechanicznych
Wood-polymer composites with microcellular foaming : forecasting and evaluation of mechanical properties
Autorzy:
Frącz, W.
Janowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/278417.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Inżynierii Materiałów Polimerowych i Barwników
Tematy:
wtryskiwanie porujące
kompozyty mikroporowate
symulacje numeryczne
Digimat
ANSYS
homogenizacja Mori-Tanaka
microcellular injection molding process
microporous composites
numerical simulations
Mori-Tanaka homogenization method
Opis:
W pracy przeprowadzono symulacje numeryczne procesu wtryskiwania z porowaniem mikrokomórkowym wyprasek z kompozytu polimerowego WPC (drewno - polimer) dla zmiennej zawartości gazu. W celu oceny właściwości trójfazowej struktury kompozytu (matryca polipropylenowa, 10% włókien drewna sosnowego oraz 1-15% porów) wykonano analizę mikrostrukturalną oraz przeprowadzono obliczenia wytrzymałościowe z użyciem modelu homogenizacji Mori-Tanaka. Analizowany wytwór (próbka do rozciągania zgodnie z PN-ISO 527-1) poddano symulacji obciążenia w programie Ansys, określając wpływ zmiennego stopnia porowania wytworu na jego właściwości wytrzymałościowe. Ponadto w pracy przedstawiono komputerową wizualizację przewidywanej, obliczonej mikrostruktury dla kompozycji sporowanego WPC, przy zmiennym stopniu porowatości struktury kompozytu oraz obliczone dla badanych kompozytów macierze sztywności.
The numerical simulations of injection molding process with microcellular foaming for WPC (wood-polymer composite) was carried out in this work for variable volume content of gas. In order to evaluate the properties of three-phase composite structure (polypropylene matrix, 10% of wood fibers from pine and 1-15% of pores) microstructural analysis was performed and the strength calculations were carried out using the Mori-Tanaka homogenization model. The analyzed product (the dumbbell for tensile testing, according to PN-ISO 527-1) was used to tensile testing simulation in Ansys commercial code, determining the influence of variable degree of foaming on its mechanical properties. In addition, the paper presents the computer visualization for the expected, calculated microstructure of foamed WPC composite (with varying degrees of porosity of the composite structure) and stiffness matrix calculated for the tested composites.
Źródło:
Przetwórstwo Tworzyw; 2016, T. 22, Nr 6 (174), 6 (174); 508-515
1429-0472
Pojawia się w:
Przetwórstwo Tworzyw
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Access to Business Development Support Services and Performance of Youth-Owned Enterprises in Tanzania
Autorzy:
Mori, Neema
Powiązania:
https://bibliotekanauki.pl/articles/474886.pdf
Data publikacji:
2015
Wydawca:
Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
Tematy:
youth
business development services
YOEs
Tanzania
Opis:
We investigated a sample of 3,098 randomly chosen youth-owned enterprises (YOEs) in Tanzania and studied their access to business development support (BDS) services. YOEs are defined as enterprises owned and run by young entrepreneurs, aged between sixteen and thirty-five, according to the Tanzanian definition of youth. We analyzed which BDS services affect the performance of YOEs in terms of (i) number of employees, (ii) whether the enterprise keeps financial records and (iii) the entrepreneurs’ perception of the performance of their enterprises. With the support of the resourcebased view, we found that access to expert advice is positively associated with a YOE’s number of employees and their ability to keep financial records. We also found that access to business management training and entrepreneurship training positively influences financial record keeping and enterprises’ perceived performance. Overall, we conclude that the resources that young entrepreneurs obtain through their access to BDS services are crucial for their enterprises.
Źródło:
Journal of Entrepreneurship, Management and Innovation; 2015, 11, 2; 57-81
2299-7075
2299-7326
Pojawia się w:
Journal of Entrepreneurship, Management and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Silkworm Excrement Organic Fertilizer on Hemp Biomass Yield and Composition
Autorzy:
Łochyńska, Małgorzata
Frankowski, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/125334.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
mulberry silkworm
Bombyx mori L.
waste management
Cannabis sativa L.
Opis:
The organic fertilization and ecological farming are becoming increasingly popular and required. The studies on the organic farming of hemp (Cannabis sativa L.) were presented in this article. One of the options of organic fertilizer is the mulberry silkworm (Bombyx mori L.) breeding waste. The breeding of this insect is a cheap source of waste which gives very positive results on the plants yield. In this research, 3 repetition pots were tested: with silkworm fertilizer 15 t/ha, 30 t/ha and pots without fertilization (control). The total length, technical length, panicles length and diameter of hemp were measured. Moreover, the chemical composition of plants with and without fertilization was compared. The mean total length and technical length were highest in 15t/ha of manure dose. In turn, the panicles and the diameter of hemp were highest after 30 t/ha of manure dose.
Źródło:
Journal of Ecological Engineering; 2019, 20, 10; 63-71
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of various carbohydrate sources on postprandial glucose, insulin and NEFA concentrations in obese cats
Autorzy:
Mori, A.
Ueda, K.
Lee, P.
Oda, H.
Ishioka, K.
Sako, T.
Powiązania:
https://bibliotekanauki.pl/articles/31194.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Carbohydrate is an important source of energy, which can significantly affect postprandial blood glucose and insulin levels in cats. In healthy animals, this is not a big concern; however, in obese and diabetic animals, this is an important detail. In the present study, the impact of four different carbohydrate sources (glucose, maltose, corn starch, and trehalose) on short-term post-prandial serum glucose, insulin, and non-esterified fatty acid (NEFA) concentrations was investigated with four obese cats. Each of the carbohydrate sources was added to a commercial wet food diet for feeding the animals. A significant difference was observed in postprandial glucose, insulin, and NEFA area under the curve (AUC) values between each carbohydrate source in obese cats. Furthermore, glucose and maltose induced the highest postprandial glucose and insulin AUC values, whereas trehalose induced the lowest postprandial glucose and insulin AUC value amongst all carbohydrate sources, respectively, in obese cats. However, trehalose has a higher risk of inducing side effects, such as diarrhea, as compared to other carbohydrate sources. As such, different carbohydrate sources appear to have a very significant impact on post-prandial glycemia and subsequent insulin requirement levels in obese cats. These results might be useful when selecting a prescription diet for obese or diabetic cats. In addition, maltose appears to be capable of inducing experimentally evoked postprandial hyperglycemia in obese cats, which may serve as a good tool for use to check the impact and effectiveness of newly developed oral hypoglycemic drugs or supplements for cats in future experiments.
Źródło:
Polish Journal of Veterinary Sciences; 2016, 19, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 58

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