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Wyszukujesz frazę "Lu, W." wg kryterium: Wszystkie pola


Tytuł:
Solution of some problems of single-scale wavelet transform processor using a magnetostatic surface wave device
Autorzy:
Lu, W.
Kuang, L.
Lü, X.
Zhu, C.
Zhang, T.
Zhang, J.
Powiązania:
https://bibliotekanauki.pl/articles/221174.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wavelet transform processor
magnetostatic surface wave (MSSW)
interdigital transducer
direct coupling
insertion loss
Opis:
In this paper, we investigate the implementation schemes of a single-scale wavelet transform processor using magnetostatic surface wave (MSSW) devices. There are three implementation schemes: the interdigital transducer, the meander line transducer and the grating transducer. Because the interdigital transducer has excellent properties, namely, good frequency characteristic and low insertion loss, we use the interdigital transducer as the implementation scheme of a single-scale wavelet transform processor using MSSW device. In the paper, we also present the solutions to the three key problems: the direct coupling between the input transducer and the output transducer, the insertion loss, and the loss characteristics of the gyromagnetic film having an influence on the wavelet transform processor. There are two methods of reducing the direct coupling between the input transducer and the output transducer: increasing the distance between the input transducer and the output transducer, and placing a metal "wall" between the input transducer and the output transducer. There also are two methods of reducing the insertion loss of a single-scale wavelet transform processor using a MSSW device for scale: the appropriate thickness of the yttrium iron garnet (YIG) film and the uniform magnetic field. The smaller the ferromagnetic resonance linewidth of the gyromagnetic film, the smaller the magnetostatic wave propagation loss.
Źródło:
Metrology and Measurement Systems; 2012, 19, 4; 685-692
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterizations and evaluations on the bonding quality of molybdenum disilicides
Charakterystyka i ocena jakości połączeń wytworzonych przez MoSi2
Autorzy:
Lu, L. W.
Qin, W. G.
Powiązania:
https://bibliotekanauki.pl/articles/352922.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
MoSi2
stal nierdzewna 316L
spiekanie
316L stainless steel
sintering
Opis:
In this study, we proposed a new method using the spark plasma sintering technique to bond ceramics to alloys. MoSi2 and 316L stainless steel were chosen as sample materials and can be welded well with graded interlayers. We found that dense uniformed bondings were achieved because of the comparable coefficient of thermal expansion of the interlayers. Furthermore, such a compatibility between the graded interlayers prevented MoSi2 with low toughness from the occurrence of microcracks resulted from the residual stresses formed during cooling of the bondings.
W pracy zaproponowano nowa metodę łączenia ceramiki i stopów metodą spiekania iskrowo plazmowego SPS (spark plasma sintering). MoSi2 i stal nierdzewna 316L zostały wybrane jako przykładowe materiały i moga byc łaczone poprzez gradientowe warstwy pośrednie. Okazało się, że zwarte, jednorodne połączenia zostały uzyskane dzieki porównywalnemu współczynnikowi rozszerzalności cieplnej warstw pośrednich. Ponadto, tego rodzaju zgodnosc pomiedzy warstwami pośrednimi zapobiegła wystapieniu mikropęknięć w MoSi2, który jest materiałem o niskiej twardości, będacych wynikiem naprezen powstałych podczas chłodzenia połączeń.
Źródło:
Archives of Metallurgy and Materials; 2011, 56, 4; 1271-1271
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Current Landscape of Management of Low Grade Mucinous Appendiceal Adenocarcinoma
Autorzy:
Lu, Pamela W.
Fields, Adam C.
Melnitchouk, Nelya
Powiązania:
https://bibliotekanauki.pl/articles/1623478.pdf
Data publikacji:
2020
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Źródło:
Państwo i Społeczeństwo; 2020, 4; 11-14
1643-8299
2451-0858
Pojawia się w:
Państwo i Społeczeństwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The idea of the golden age and ludi saeculares in ancient Rome
Idea złotego wieku a lu di saeculares w starożytnym Rzymie
Autorzy:
Kubiaczyk, Monika Anna
Powiązania:
https://bibliotekanauki.pl/articles/631035.pdf
Data publikacji:
2015-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Źródło:
Studia Europaea Gnesnensia; 2015, 13; 393-401
2082-5951
Pojawia się w:
Studia Europaea Gnesnensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effects of cavity geometry on an aspirated compressor cascade
Autorzy:
Guo, S.
Lu, H.-W.
Liu, J.
Wu, C.-J.
Powiązania:
https://bibliotekanauki.pl/articles/280871.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
highly loaded compressor cascade
boundary layer suction
suction flow distribution
off-take cavity
Opis:
The impact of the bleed off-take cavity within aspirated blades on the aerodynamic perfor- mance of a highly loaded compressor cascade was explored. Three-dimensional Navier-Stokes simulations were conducted in rectangular compressor cascades after validation against expe- rimental results were done. Five different off-take configurations with varying suction loca- tion were numerically evaluated. The results show that the regularities of the suction flow distribution on the suction slot inlet greatly influence the benefits of boundary layer suction. The distribution style greatly depends not only on the flow condition of the blade passage, but also on the realization of the suction process and the geometry of the cavity inside the aspirated blade. The low kinetic fluid in the endwall region compared with that around the midspan is usually prone to be sucked into the suction slot. The distribution of the suc- tion mass flow along the spanwise direction would be symmetrical if the suction position is properly selected and the inside off-take cavity is well designed, even though the bleeding system has been simplified to be asymmetrical as employed in the present document.
Źródło:
Journal of Theoretical and Applied Mechanics; 2014, 52, 1; 117-128
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the pyrolytic methylation to GC/MS profi ling of short-chain fatty acids in selected pharmaceutical preparations
Zastosowanie pirolitycznej metylacji w oznaczaniu profi lu krótkołańcuchowych kwasów tłuszczowych w wybranych preparatach farmaceutycznych techniką GC/MS
Autorzy:
Chodurek, Ewa
Kurkiewicz, Sławomir
Dzierżęga-Lęcznar, Anna
Stępień, Krystyna
Dzierżewicz, Zofia
Powiązania:
https://bibliotekanauki.pl/articles/1038403.pdf
Data publikacji:
2011
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
pyrolysis
gc/ms
tmah derivatization
scfa
lab
piroliza
derywatyzacja
tmah
krótkołańcuchowe kwasy tłuszczowe
bakterie kwasu
mlekowego
Opis:
Lactic Acid Bacteria (LAB) belong to the normal fl ora of human alimentary tract and vaginal epithelium. The main products of LAB metabolism are short chain fatty acids (SCFA), which are known to have signifi cant infl uence on human health. The aim of this study was to examine the suitability of direct pyrolytic methylation in GC/MS profi ling of SCFA in the selected pharmaceutical preparations of LAB. For method optimization, standard SCFA samples consisting of acetic, propionic, butyric and lactic acids were pyrolyzed under various temperature conditions in the presence of methanolic solution of tetramethylammonium hydroxide (TMAH) as a derivatizing reagent. It was demonstrated that pyrolytic derivatization of standard SCFA to methyl esters was the most effi cient with the use 10% TMAH and the pyrolytic fi laments with Curie temperature of 480°C, when the pyrolysis cell was kept at 150°C. It was shown that the method is suitable for GC/MS qualitative analysis of SCFA profi le in the pharmaceutical preparations that contain LAB in lyophilized form.
Bakterie kwasu mlekowego (Lactic Acid Bacteria – LAB) należą do naturalnej flory bakteryjnej zasiedlającej przewód pokarmowy oraz nabłonek pochwy człowieka. Głównym produktem metabolizmu LAB są krótkołańcuchowe kwasy tłuszczowe (short-chain fatty acids – SCFA) wywierające istotny wpływ na zdrowie człowieka. W pracy poddano ocenie przydatność techniki bezpośredniej metylacji pirolitycznej w oznaczaniu profi lu SCFA w wybranych preparatach farmaceutycznych LAB techniką GC/MS. W celu optymalizacji metody, wzorcowe próbki SCFA zawierające kwas octowy, propionowy, masłowy i mlekowy poddano pirolizie w obecności metanolowego roztworu wodorotlenku tetrametyloamoniowego (TMAH) w różnych warunkach temperaturowych. Stwierdzono, że derywatyzacja analizowanych kwasów tłuszczowych do estrów metylowych zachodziła z największą wydajnością pod wpływem 10% TMAH, gdy zastosowano druty pirolityczne o temperaturze Curie 480°C, a komorę pirolizera utrzymywano w temperaturze 150°C. Wykazano, że zoptymalizowana metoda jest przydatna w prowadzonej techniką GC/MS analizie jakościowej profi lu SCFA w wybranych preparatach farmaceutycznych zawierających LAB w formie liofi lizatu.
Źródło:
Annales Academiae Medicae Silesiensis; 2011, 65, 3; 16-20
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Incorporating Fault Tolerance into Component-based Architectures for Embedded Systems
Autorzy:
Lu, S.
Halang, W. A.
Powiązania:
https://bibliotekanauki.pl/articles/384865.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
software engineering
software architecture
fault tolerance
component technique
Opis:
Component-based software architecture is presented to support the process of designing and developing fault-tolerant computerised control systems. To this end, we combine an idealised fault-tolerant component, the C2 architecture style and protective wrappers, and embed fault tolerance techniques into component definitions. The resulting architecture is described by normal- and abnormal-activity components aiming to support a wide range of fault tolerance features. Use of this architecture enables to reason about system dependability already from the earliest development stages on, and to customise fault tolerance strategies according to application characteristics.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 1; 46-51
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hierarchy of plasticity traits in responses of Quercus aliena to light conditions and water availability
Autorzy:
Xu, N.
Wang, R.
Liu, J.
Lu, P.
Guo, W.
Powiązania:
https://bibliotekanauki.pl/articles/41404.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Opis:
This study aimed to investigate plasticity of different plant traits to varied light and water availability. A greenhouse experiment was conducted with Quercus aliena seedlings with two light and four soil water levels. Plant traits related to leaf physiology, morphology, anatomy, and biomass production were determined. The results showed that plant size had significant effects on leaf area, leaf number, shoot height, basal diameter and crown area. After excluding the influence of plant size, water treatment had stronger effects on plants compared to light levels, and their interaction effect was significant. The limited water supply significantly inhibited leaf photosynthetic rate and the fluorescence efficiency under high light. However, leaves submitted to moderate drought stress showed enhanced fluorescence activity under shade condition. Grand plasticity of leaf physiology and growth was the highest, followed by biomass allocation and leaf morphology, and lastly anatomy, and this ranking did not change as resources considered. Among the variables, leaf petiole length, chlorophyll content and leaf area could be selected as candidates for estimation of species’ plasticity to water, light and their interaction, respectively. Therefore, our results suggested that there was a hierarchy existing among traits plasticity in Q. aliena, and supported the aboveground facilitation hypothesis that shade could alleviate the adverse effect of drought.
Źródło:
Dendrobiology; 2015, 74
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Posture Stability Evaluation Using Static Posturography in Patients after Cruciate Ligament Reconstruction
Autorzy:
Kubisz, L.
Werner, H.
Bosek, M.
Weiss, W.
Powiązania:
https://bibliotekanauki.pl/articles/1504202.pdf
Data publikacji:
2011-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.19.lu
87.19.R-
87.19.U-
Opis:
Ligament reconstruction is one of the surgical methods for treatment of anterior cruciate ligament injury. The main purpose of rehabilitation after surgical ligament reconstruction is to obtain maximal efficiency of knee joint, their stability and appropriate lower limbs encumbrance. Static posturography is one of the control, rehabilitative and diagnostic tools in such treatment. The purpose of the study was to evaluate the posture stability differences between healthy people and patients after anterior cruciate ligament reconstruction. The centre of pressure sway was registered using the standard posturography platform (Pro-med). During the test, the subject stood freely with eyes open and closed. In order to determine the stability of the subject, the average velocity of the centre of pressure sway, and the average accretion rate of surface area encircled by centre of pressure, a mean radius of centre of pressure and amount of its displacement were calculated. Parameters measured for the eyes closed posture were significantly greater for people after anterior cruciate ligament reconstruction, while differences between groups for eyes open test were statistically insignificant. This indicates impairment of the somatosensoric posture control system. It should be noted that selected stability indicators: an average velocity of the centre of pressure sway, its anterior-posterior and mediolateral components, a mean radius of centre of pressure and a mean accretion rate of surface area encircled by centre of pressure varied in both groups.
Źródło:
Acta Physica Polonica A; 2011, 119, 6A; 957-960
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Defect solitons supported by kagome photonic lattices in biased photovoltaic-photorefractive crystals
Autorzy:
Hui, J.
Lu, K.
Zhao, C.
Gao, L.
Chen, W.
Powiązania:
https://bibliotekanauki.pl/articles/173797.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
defect solitons
photonic lattices
photorefractive nonlinearity
nonlinear optics
Opis:
We report that defect solitons can be supported by kagome photonic lattices with a defect in biased photovoltaic-photorefractive crystals. For a positive defect, these defect solitons exist only in the semi-infinite bandgap and are stable in the low power region but unstable in the high power region. For a negative defect, these defect solitons exist in both of the semi-infinite bandgaps and the first bandgap. In the semi-infinite bandgap, low-power defect solitons are stable when the negative defect depth is low and unstable when the negative defect depth is high, moderate-power defect solitons are stable when the negative defect depth is high, and high-power defect solitons are unstable for all the negative defect depths. In the first bandgap, defect solitons are stable in all the power regions when the negative defect depth is low. When the negative defect depth is high, defect solitons are stable in the high power region and unstable in the low power region. On the other hand, these defect solitons are those studied previously in kagome photonic lattices with a defect in biased non-photovoltaic-photorefractive crystals when the bulk photovoltaic effect is negligible and those in kagome photonic lattices with a defect in photovoltaic-photorefractive crystals when the external bias field is absent.
Źródło:
Optica Applicata; 2018, 48, 3; 349-359
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł

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