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Przejdź do strony domowej biblioteki Pedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaPedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie
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Wyświetlanie 1-10 z 16
Tytuł:
Phenome-wide association analysis of LDL-cholesterol lowering genetic variants in PCSK9
Autorzy:
Denaxas, Spiros
Lester, Kirchner H.
Bondy, Melissa
Casas, Juan P.
Kitchner, Terrie
Fiorito, Giovanni
Roden, Dan M.
Hovingh, Kees
Swerdlow, Daniel I.
Hemminki, Kari
Nicolaides, Andrew
Mahajan, Anubha
Linneberg, Allan
Lill, Christina M.
Pazoki, Raha
Wright, John
Morris, Richard
Pare, Guillaume
Law, Philip
Price, Jackie F.
Welch, Catherine
Hakonarson, Hakon
Campbell, Archie
Panayiotou, Andrie G.
Eppinga, Ruben N.
Uitterlinden, Andre
Wareham, Nicholas J.
Cooper, Jackie
Malyutina, Sofia
Valentine, Dennis
Fairhurst-Hunter, Zammy
Christen, Tim
Ingelsson, Erik
Hopewell, Jemma C.
Lerch, Markus M.
Franco, Oscar
Costa, Rui Providencia E.
Sanchez-Galvez, Adelaida
Guarrera, Simonetta
Kiechl, Stefan
Asselbergs, Folkert W.
Hancock, Stephen
Speedy, Helen
Scott, Robert A.
Hansen, Torben
Goldschmidt, Hartmut
Meade, Tom
Froguel, Philippe
Brilliant, Murray
Lange, Leslie A.
Demuth, Ilja
McLachlan, Stela
Faraway, Rupert
Grobbee, Diederick E.
Bao, Yanchun
Engert, Andreas
Mason, Dan
ODonnell, Martin
Bertram, Lars
Roussel, Ronan
Luan, Jianan
Crosslin, David R.
Ward, Joey
Hansson, Markus
Hartwig, Fernando Pires
Chong, Michael
Dorr, Marcus
Ritchie, Marylyn D.
Pikhart, Hynek
Holliday, Elizabeth
Li, Ni
Padmanabhan, Sandosh
Houlston, Richard
McCarty, Catherine A.
Moldovan, Max
Langenberg, Claudia
Smart, Melissa
Snieder, Harold
Kinnersley, Ben
Cornish, Alex J.
Chasman, Daniel I.
van Iperen, Erik
Pell, Jill P.
Schmidt, Amand F.
Willeit, Johann
Morgan, Gareth
Humphries, Steve E.
Young, Robin
Whincup, Peter
Bonnefond, Amelie
Labreche, Karim
Volzke, Henry
Finan, Chris
Ridker, Paul M.
Wanamethee, Goya
Dale, Caroline
Went, Molly
Attia, John
Ben-Shlomo, Yoav
Hingorani, Aroon D.
Tamosiunas, Abdonas
van der Schouw, Yvonne T.
Seshadri, Sudha
Kumari, Meena
Carrell, David S.
Denny, Joshua C.
Maitland-van der Zee, Anke H.
Matullo, Giuseppe
Patel, Riyaz S.
Sacerdote, Carlotta
Sattar, Naveed
Norman, Kristina
Power, Christine
Ford, Ian
Pająk, Andrzej
Lind, Lars
Schofield, Peter
Yusuf6, Salim
Holmes, Michael V.
Baumeister, Sebastian
Volker, Uwe
Christophersen, Ingrid E.
Scott, Rodney
Onland-Moret, N. Charlotte
Allan, James
Weinhold, Niels
Nilsson, Bjorn
Steinhagen-Thiessen, Elisabeth
Preiss, David
Verweij, Niek
Coassin, Stefan
Cariou, Bertrand
Bobak, Martin
Sanson, Marc
Jess, Tine
Baranova, Ekaterina V.
Bots, Michiel L.
Kivimaki, Mika
Willeit, Karin
Thuillier, Dorothee
Sonneveld, Pieter
Hofman, Albert
Teumer, Alexander
Hypponen, Elina
Simon, Matthias
Sud, Amit
de Andrade, Mariza
Larson, Eric B.
Carty, Cara
Grarup, Niels
Reiner, Alex P.
Said, M. Abdullah
Marques-Vidal, Pedro
Demuth, Juri
Fatemifar, Ghazaleh
Keating, Brendan J.
Hemingway, Harry
van der Harst, Pim
Mook-Kanamori, D. O.
Dobbins, Sara E.
Kubinova, Ruzena
Horta, Bernardo Lessa
Dehghan, Abbas
Pedersen, Oluf
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Agent-based evacuation in passenger ships using a goal-driven decision-making model
Autorzy:
Ni, B.
Li, Z.
Li, X.
Tematy:
ship evacuation analysis
agent-based model
goal-driven decision-making model
social force model
steering behavior
Pokaż więcej
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:
https://bibliotekanauki.pl/articles/258666.pdf  Link otwiera się w nowym oknie
Opis:
A new agent-based model is proposed to support designers in assessing the evacuation capabilities of passenger ships and in improving ship safety. It comprises models for goal-driven decision-making, path planning, and movement. The goal-driven decision-making model determines an agent’s target by decomposing abstract goals into subgoals. The path-planning model plans the shortest path from the agent’s current position to its target. The movement model is a combination of social-force and steering models to control the agent in moving along its path. The utility of the proposed model is verified using 11 tests for passenger ships proposed by the Maritime Safety Committee of the International Maritime Organization.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An overview of design, control, power management, system stability and reliability in electric ships
Autorzy:
Ni, K.
Hu, Y.
Li, X.
Tematy:
electric ship
control algorithms
power electronics techniques
power drive system
stability
Pokaż więcej
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:
https://bibliotekanauki.pl/articles/1193412.pdf  Link otwiera się w nowym oknie
Opis:
With the fast development of power electronics techniques, electrification of shipboard power systems (SPS) is an unstoppable trend, and the concepts of electric ships (ESs) and all-electric ships (AESs) emerge. In order to meet the constantly increasing electricity demand in SPS, the medium voltage direct current (MVDC) SPS becomes a promising shipboard electrical network architecture. This paper aims to present a comprehensive review of the design, control, power management, system stability and reliability in ESs. The most recent technologies and academic achievements in these fields are discussed. In the near future, it is possible that the electric propulsion technology will be widely applied to various types of ships.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Continuous Growth of Bulk Si by Temperature Gradient Zone Melting Method
Autorzy:
Li, Jiayan
Wang, Liang
Hao, Jianjie
Ni, Ping
Tan, Yi
Tematy:
bulk Si
TGZM
Si-Al alloy
growth rate
impurities
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/356541.pdf  Link otwiera się w nowym oknie
Opis:
Temperature gradient zone melting (TGZM) method was used to obtain bulk Si continuously for the efficient separation and purification of primary Si from the Si-Al alloy in this work. The effects of alloy thickness, temperature gradient and holding time in TGZM purification technology were investigated. Finally, the continuous growth of bulk Si without eutectic inclusions was obtained. The results showed that the growth rate of bulk Si was independent of the liquid zone thickness. When the temperature gradient was changed from 2.48 K/mm to 3.97 K/mm, the growth rate of bulk Si was enhanced from 7.9×10-5 mm/s to 2.47×10-4 mm/s, which was increased by about 3 times. The bulk Si could grow continuously and the growth rate was decreased with the increase of holding time from 1 h to 5 h. Meanwhile, low refining temperature was beneficial to the removal of impurities. With a precipitation temperature of 1460 K and a temperature gradient of 2.48 K/mm, the removal rates of Fe, P and B were 99.8%, 94.0% and 63.6%, respectively.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear degradation modeling and maintenance policy for a two-stage degradation system based on cumulative damage model
System charakteryzujący się dwuetapowym procesem degradacji: nieliniowe modelowanie degradacji oraz wyznaczanie strategii eksploatacji systemu na podstawie modelu sumowania uszkodzeń
Autorzy:
Ni, X.
Zhao, J.
Song, W.
Guo, C.
Li, H.
Tematy:
two-stage
nonlinear
degradation modeling
cumulative damage model
maintenance policy
dwu-etapowy
nieliniowy
modelowanie degradacji
model sumowania uszkodzeń
strategia eksploatacji
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Powiązania:
https://bibliotekanauki.pl/articles/301523.pdf  Link otwiera się w nowym oknie
Opis:
This paper attempts to take into account a two-stage degradation system which degradation rate is non-stationary and change over time. The system degradation is thought to be caused by shocks, and system degradation model is established based on cumulative damage model. The nonlinear degradation process is expressed by different shock damage and shock counting. And shock damage and shock counting are assumed to be Gamma distribution and non-homogeneous Poisson process, respectively. On the basis of these, system reliability model and nonlinear degradation model are given. In order to optimal maintenance policy for considered system, adaptive maintenance policy and time-dependent maintenance policy are studied, and mean maintenance cost rate is established to evaluate the maintenance policies. Numerical examples are given to analyze the influences of degradation model parameters and find optimal maintenance policy for considered system.
W przedstawionym artykule badano system, w którym proces degradacji zachodzi dwuetapowo, a szybkość degradacji jest zmienna w czasie. Przyjęto, że do degradacji systemu dochodzi w wyniku wstrząsów. Model degradacji systemu oparto na modelu sumowania uszkodzeń. Nieliniowy proces degradacji określono jako taki, w którym uszkodzenie powodowane wstrząsem oraz częstotliwość wstrząsów są wartościami zmiennymi. Przyjęto, że uszkodzenie powodowane wstrząsem ma rozkład gamma a częstotliwość wstrząsów jest niejednorodnym procesem Poissona. Na tej podstawie utworzono model niezawodności systemu oraz model degradacji nieliniowej. W celu opracowania optymalnej strategii eksploatacji dla rozpatrywanego systemu, rozważono dwa typy strategii utrzymania ruchu: strategię adaptacyjną oraz strategię czasowo-zależną. Strategie te oceniano określając średni poziom kosztów eksploatacji. Przykłady numeryczne posłużyły do analizy wpływu parametrów modelu degradacji oraz pozwoliły określić optymalną strategię utrzymania dla rozpatrywanego systemu.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on Distribution and Morphology of Primary Si Under the Effect of Direct Current
Autorzy:
Li, Jiayan
Njuguna, Benson Kihono
Ni, Ping
Wang, Liang
Tan, Yi
Tematy:
silicon source
direct current
Joule heating
Si morphology
Fe impurity
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/2049663.pdf  Link otwiera się w nowym oknie
Opis:
A source of pure silicon was added into an alloy refining system during a refining process with the application of a direct electric current. The effect of the temperature difference between the graphite electrodes and the alloy was decreased. The temperature increase value (ΔT) of the Al-28.51wt.%Si alloy sample caused by Joule heating was calculated by weighing the mass of primary silicon. When the current density was 5.0×105A/m2, the overall temperature increase in the alloy was about 90°C regardless of the alloy composition. Adequate silicon atoms recorded the footprint of the electric current in the alloy melt. The flow convection generated by the electric current in the melt during the solidification process resulted in the refinement of primary silicon. The Fe impurity content in alloy refining without the electric current density was 2.16 ppm. However, it decreased to 1.27 ppmw with the application of an electric current density of 5.0×105A/m2.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flotation of long flame coal pretreated by polyoxyethylene sorbitan monostearate
Autorzy:
Ni, C.
Xie, G.
Li, Z.
Bu, X.
Peng, Y.
Sha, J.
Tematy:
flotation
hydrophobicity
low rank coal
Tween 60
pretreatment
Pokaż więcej
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:
https://bibliotekanauki.pl/articles/110299.pdf  Link otwiera się w nowym oknie
Opis:
In this investigation, polyoxyethylene sorbitan monostearate (Tween 60) was used to improve flotation of fine long flame coal. The flotation recovery of long flame coal could be increased when long flame coal was either pretreated or conditioned with Tween 60 in a flotation cell for a period before the addition of collector. Fourier Transform Infrared (FTIR) technique was used to indicate surface properties of long flame coal. The results of FTIR show that there are many oxygen functional groups on the sur-face. Contact angle measurements were used to indicate changes in hydrophobicity of coal surface before and after Tween 60 and/or diesel pretreatments. The results of contact angle measurements show that hydrophobicity of coal can be increased by Tween 60. Tween 60 can also enhance adsorption of diesel on the coal surface, and hence floatability of long flame coal can be further improved. Tween 60 primarily enhances the flotation recovery of low density coal fractions (<1.5 and 1.5-1.8 kg/dm3). However, the increase in flotatation recovery is less significant with an excessive addition of Tween 60.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective comminution and grinding mechanisms of spent carbon anode from aluminum electrolysis using ball and rod mills
Autorzy:
Ni, Chao
Zhou, Shaoqi
Gao, Jixuan
Bu, Xiangning
Chen, Yuran
Alheshibri, Muidh
Xie, Guangyuan
Li, Biao
Tematy:
selective comminution
ball mill
rod mill
spent carbon anode
grinding mechanizm
Pokaż więcej
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:
https://bibliotekanauki.pl/articles/2146907.pdf  Link otwiera się w nowym oknie
Opis:
The recovery of spent carbon anode (SCA) materials plays important roles in environment protection and resources recycling, while this cannot be efficiently achieved without liberation. In this study, grinding characteristics of spent carbon anode from aluminum electrolysis in both ball mill and rod mill were analyzed, and compared based on the utilization of the selective Fuerstenau upgrading curves. In addition, the different grinding mechanisms of ball and rod milling were evaluated by analyzing the shape factor and surface roughness of the ground samples. Results of mineralogical characterizations indicated that carbon particles (d50 = 46.86 μm) presented in the SCA were closely associated with cryolite particles. At 5 min grinding time, the maximum selective comminution factor (β) values of ball milling and rod milling were 2.00 and 1.63, respectively, indicating a higher degree of selective comminution of SCA was achieved from ball milling. Comparisons of the valuable component content (cv, cum) of -125 μm ground particles and the shape characterizations of 74–125 μm ground particles generated from ball and rod milling manifest that a direct relationship exists between the degree of selective comminution and the grinding mechanism.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on peripheral clamping of large-aperture laser transport mirror
Autorzy:
Cao, Tingfen
Liu, Bowu
Wang, Hui
Ni, Wei
Zhang, Jinli
Chen, Xiaojuan
Li, Yingang
Zhou, Hai
Jiang, Xiaodong
Hu, Dongxia
Zhu, Qihua
Tematy:
transport mirror
peripheral clamping
surface distortion
assembly structure
Pokaż więcej
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:
https://bibliotekanauki.pl/articles/27310087.pdf  Link otwiera się w nowym oknie
Opis:
This article introduces the study of peripheral clamping for large-aperture laser mirrors in high power laser facilities. Some multi-point clamping schemes were experimentally tested, the results of the experiments show that these schemes cannot meet the technical requirements, and in the simulation analysis, we explain the reason for this phenomenon. It is concluded that the additional bending moment caused by the non-ideal process factors in the multi-point clamping is the main cause for the surface distortion. Based on the above conclusions, we carried out research on minor-point clamping. Experimental verification of the minor-point clamping were done, the results show that the minor-point clamping can meet the requirements of technical indicators in whole process. This work can provide a reference for the design of the large-aperture transport mirror clamping structure, which may be used in huge laser devices and telescopes.
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 16

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