Autor: Wang, L.-T. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Physics with the KLOE-2 experiment at the upgraded DAΦNE
Autorzy:: Toro, N.
Campana, P.
Wolke, M.
Moricciani, D.
Matsyuk, M. A.
Wislicki, W.
Ivashyn, S.
Messi, R.
Boito, D. R.
Happacher, F.
Domenico, A. Di
Graziani, E.
Bulychjev, S. A.
Loddo, F.
Kluge, W.
Patera, V.
Müller, S.
Silarski, Michał
Sarkar, S.
Lehnert, R.
Passera, M.
Czerwiński, Eryk
Martemianov, M. A.
Budano, A.
Mescia, F.
Morello, G.
Giacosa, F.
Amelino-Camelia, G.
Tortora, L.
Pennington, M. R.
Bossi, F.
Mavromatos, N. E.
Passeri, A.
Quintieri, L.
Fiore, S.
Wang, L.-T.
Bernabeu, J.
Kupsc, A.
Simone, P. De
Jegerlehner, F.
Santis, A. De
Zorzi, G. De
Höistad, B.
Nguyen, F.
Lukin, P.
Jacewicz, M.
Lucia, E. De
Micco, B. Di
Schuster, P. C.
Escribano, R.
Ciambrone, P.
Sarra, I.
Bencivenni, G.
Felici, G.
Bloise, C.
Domenici, D.
Fedotovich, G. V.
Sciubba, A.
Hiesmayr, B. C.
Venanzoni, G.
Ceradini, F.
Gauzzi, P.
Branchini, P.
Bocci, V.
Eidelman, S. I.
Santangelo, P.
Erriquez, O.
Ranieri, A.
Prades, J.
Iarocci, E.
Archilli, F.
Versaci, R.
Johansson, T.
Czyz, H.
Martini, M.
Bertlmann, R. A.
Donato, C. Di
Schioppa, M.
Babusci, D.
Zdebik, Jarosław
D’Ambrosio, G.
Lee-Franzini, J.
Passemar, E.
Miscetti, S.
Kulikov, V. V.
Dané, E.
Robertis, G. De
Capon, G.
Badoni, D.
Taccini, C.
Giovannella, S.
Sciascia, B.
Bini, C.
Franzini, P.
Gonnella, F.
Moskal, Paweł
Essig, R.
Reece, M.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

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Skocz do pozycji: 2.

Tytuł:: Improvements on the HVDC Reliability Assessment Index System considering preventive maintenance
Poprawa systemu wskaźników niezawodności HVDC z uwzględnieniem konserwacji zapobiegawczej
Autorzy:: Wang, T.
Guan, L.
Tematy:: power system
HVDC
reliability assessment
reliability index system
preventive maintenance
system zasilania
ocena niezawodności
system wskaźników niezawodności
konserwacja zapobiegawcza; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Powiązania:: https://bibliotekanauki.pl/articles/301746.pdf Link otwiera się w nowym oknie
Opis:: This paper proposes two novel reliability indexes for HVDC and a risk evaluation system for quantifying the risk brought by HVDC outage. Based on a proactive and preventive strategy of maintenance arrangement, the paper puts forward the “Power Availability” index to correct the situation that Energy Availability leads to inconsistent problems with power system reliability and security in the process of application. Then, the paper introduces the quantitative evaluation method which provides an effective analysis tool for scheduling department to arrange maintenance during the appropriate time by judging the operation risk. Based on this method, the index of “Active Planned Energy Unavailability” is put forward in order to encourage the scheduling department to arrange maintenance initiatively according to the power grid risk. It could change and improve the maintenance mode of HVDC using the guiding role of the reliability index. Blend the proposed new index into the original reliability index system of HVDC, sphere of application and the assessment objects will not only be limited to the equipment department and the dispatching department, power grid corporations will also be involved. Finally, this paper chooses the China Southern Power Grid as the simulation and analysis case. The results demonstrate a practical application of the proposed procedure and method.
Niniejszy artykuł proponuje dwa oryginalne wskaźniki niezawodności dla linii wysokiego napięcia prądu stałego (HVDC) oraz system oceny ryzyka dla kwantyfikacji ryzyka na skutek przerw w dostawie HVDC. W oparciu o aktywną i prewencyjną strategię konserwacji, artykuł proponuje wskaźnik „Power Availability (Dostępności mocy)” w celu naprawy sytuacji, gdy Dostępność Energii prowadzi do niespójnych problemów z niezawodnością systemu elektroenergetycznego i bezpieczeństwem w procesie eksploatacji. Następnie artykuł wprowadza metodę oceny ilościowej, który zapewnia skuteczne narzędzie analizy dla działu planowania tak, aby można było zarządzać konserwację we właściwym momencie dzięki odpowiedniej ocenie ryzyka operacyjnego. Na bazie tej metody, zaproponowano wskaźnik „Aktywnego planowania niedostępności energii” w celu zachęcenia działu planowania do ustalania konserwacji zgodnej z poziomem ryzyka sieci energetycznej. Może to zmienić i poprawić tryb konserwacji HVDC za pomocą wskaźnika niezawodności. Proponowany nowy wskaźnik mógłby zostać wprowadzony do pierwotnego systemu wskaźników niezawodności HVDC i mógłby znaleźć zastosowanie i służyć ocenie obiektów nie tylko w działach sprzętu i dziale dyspozytorskim ale także w firmach eksploatujących sieci energetyczne. Na potrzeby symulacji i analizy, artykuł omawia przedsiębiorstwo China Southern Power Grid. Wyniki pokazują praktyczne zastosowanie proponowanej procedury i metody.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: The Antibacterial Activities of Ag/$Nano-TiO_2$ Modified Silicone Elastomer
Autorzy:: Wang, L.
Sun, T.
Zhou, S.
Shao, L.
Tematy:: 78.67.Bf; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1215694.pdf Link otwiera się w nowym oknie
Opis:: We studied the ability of Ag/$nano-TiO_2$ to inhibit Staphylococcus aureus growth on silicone elastomer material. Ag/$nano-TiO_2$ silicone elastomer was prepared with different concentrations of 0%, 2%, 4%, 6%, 8%, 10%. The antibacterial efficacy of Ag/$nano-TiO_2$ silicone elastomer was determined by the inhibition zone method and the impregnated culture method. The antibacterial timeliness of Ag/$nano-TiO_2$ silicone elastomer was tested by direct contact method. The samples were kept through thermal aging process in an accelerated aging chamber. The effect of concentrations of Ag/$nano-TiO_2$ was insignificant (P < 0.05). There was significant difference between the Ag/$nano-TiO_2$ silicone elastomer and the blank silicone elastomer (P < 0.5). There was also significant difference among specimen groups whose aging periods were 50°C, 100°C, 150°C, 200°C for 87 h (P < 0.5). The silicone elastomer with different concentrations of Ag/$nano-TiO_2$ effectively inhibits Staphylococcus aureus growth.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The Influence of Different Resin Cements and Pretreatments on the Bond Strength between Zirconia and Cement
Autorzy:: Sun, T.
Hu, C.
Wang, L.
Shao, L.
Tematy:: 87.85.jc; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1218424.pdf Link otwiera się w nowym oknie
Opis:: The aim of this study was to analyze the influence of various luting materials and surface treatments on adhesive strength for zirconia ceramics and luting cements. The zirconia framework specimens were made into cylinders. Prior to cement, zirconia framework specimens underwent various surface treatments (sandblasting with 110 μm $Al_2O_3$ particles, milling with 240-grift silicon sand paper and silanization). Resin luting cement and glass ionomer luting cement were then applied on the surface of zirconia specimens. The specimens were then subjected to a shear force. The fractured surfaces were visually analyzed by scanning electron microscopy. The shear bond strength values of resin luting cement bonded to zirconia specimens were significantly higher than glass ionomer luting cement bonded to zirconia specimens (P < 0.05). The shear bond strength values of zirconia specimens sandblasted with 110 μm $Al_2O_3$ particles were significantly higher than those milled with silicon carbide papers and underwent silanization (P < 0.05). The shear bond strength values of zirconia specimens milled with silicon carbide papers and underwent silanization were not significantly different (P < 0.05). The highest shear bond strength values were achieved when the zirconia specimens were sandblasted and bonded to resin luting cement. Airborne-particle abrasion was an effective method which could enhance the bond strength of zirconia ceramics and cements. The resin luting cement exhibited a higher bond to zirconia than glass ionomer luting cement.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 5.

Tytuł:: Inﬂuence of selenium on growth, lipid peroxidation and antioxidative enzyme activity in melon (Cucumis melo L.) seedlings under salt stress
Autorzy:: Hu, K.L.
Zhang, L.
Wang, J.T.
You, Y.
Tematy:: selenium
plant growth
lipid peroxidation
antioxidative enzyme
enzyme activity
melon
Cucumis melo
seedling
salt stress; Pokaż więcej
Wydawca:: Polskie Towarzystwo Botaniczne
Powiązania:: https://bibliotekanauki.pl/articles/58727.pdf Link otwiera się w nowym oknie
Opis:: The objective of this study was to investigate the effect of exogenous selenium (Se) supply (0, 2, 4, 8, 16 μM) on the growth, lipid peroxidation and antioxidative enzyme activity of 100 mM NaCl-stressed melon (Cucumis melo L.) seedlings. Salt stress significantly reduced the growth attributes including stem length, stem diameter, dry weight and increased antioxidative enzyme activity [superoxide dismutase (SOD), peroxidase (POD), catalase (CAT)]. Moreover, the plant exhibited a significant increase in electrolyte leakage and malondialdehyde (MDA) content under NaCl stress. Se supplementation not only improved the growth parameters but also successfully ameliorated the adverse effect caused by salt stress in melon seedlings. However, the mitigation of NaCl-stressed seedlings was different depending on the Se concentration. At lower concentrations (2–8 μM), Se improved growth and acted as antioxidant by inhibiting lipid peroxidation and increasing in SOD and POD enzymes activity under salt stress. At higher concentrations (16 μM), Se exerted diminished beneficial effects on growth. Whereas CAT activity was enhanced. The result indicated that Se supplementation had a positive physiological effect on the growth and development of salt-stressed melon seedlings.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 6.

Tytuł:: Chemical interaction between polymer and cement in polymer-cement concrete
Autorzy:: Wang, R.
Li, J.
Zhang, T.
Czarnecki, L.
Tematy:: chemical interaction
polymer
Portland cement
concrete-polymer composites
polymer-cement concrete
oddziaływanie chemiczne
polimer
cement portlandzki
betonopodobne kompozyty polimerowe
beton cementowo-polimerowy; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/200865.pdf Link otwiera się w nowym oknie
Opis:: Polymers are widely used in cement mortar and concrete modification due to their significant role in improving the overall performance of cement-based materials. Their physical interaction is well-accepted, while less attention is given to chemical interaction between the polymers and cement. Through a review of prior arts, chemical interactions are discussed and summarized in this paper. Various chemical interactions may take place between cement and different types of polymers. Understanding these chemical interactions will play an important role in clarifying the relationship between microstructure and macrostructure of polymer-modified cementitious materials. Authors expressed and proved the conviction that the organic-inorganic (Polymer-Portland cement) composite with some components chemically bonded, in parallel to the physical interaction, will be the next stage in concrete technology progress.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 7.

Tytuł:: Theoretical Studies of High-nitrogen-containing Energetic Compounds Based on the s-Tetrazine Unit
Autorzy:: Man, T. T.
Wang, K.
Zhang, J.G.
Niu, X. Q.
Zhang, T. L.
Tematy:: high-energy-density materials (HEDMs)
substituted s-tetrazine
compounds
electronic properties
thermodynamic properties
detonation
properties; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Powiązania:: https://bibliotekanauki.pl/articles/358527.pdf Link otwiera się w nowym oknie
Opis:: In order to develop new high-energy-density materials (HEDMs), we have investigated 12 substituted s-tetrazine (TZ) compounds, where s-tetrazine was substituted by amino, amido and related groups. Density functional theory (DFT) was used to predict the optimized geometries, electronic structures, total energy, heats of formation (HOFs) and densities. In addition the detonation properties were evaluated by using the VLW equation of state (EOS). The standard enthalpy of formation, the Gibbs free energy, entropy and equilibrium constants were used to estimate the success of the synthetic substitution reactions, which provided theoretical support for practical work. The bond dissociation energy (BDE) of bond C-R was calculated at each stage of the substitution reaction. The calculated results showed that substitution of amino, amido and their derivatives in the TZ ring enhances the HOF values and is favorable for increasing the thermal stability. The calculated detonation properties indicated that incorporating the above groups into the TZ ring is benefcial for improving the explosive performance. Considering the detonation properties and thermal stability, the 12 derivatives may be regarded as promising candidates as high-energy-density materials (HEDMs).
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 8.

Tytuł:: Shear properties of a honeycomb structure with zero Poisson’s ratio
Autorzy:: Song, L.
Sun, Y.
Han, Z.
Wang, T.
Wang, H.
Yin, C.
Shen, X.
Tematy:: honeycomb structure
zero Poisson’s ratio
shear properties
small deformation
large deformation; Pokaż więcej
Wydawca:: Instytut Podstawowych Problemów Techniki PAN
Powiązania:: https://bibliotekanauki.pl/articles/38697109.pdf Link otwiera się w nowym oknie
Opis:: Honeycomb structures with zero Poisson’s ratio show promising potential for application in variable-sweep wing aircraft. The shear properties of these honeycomb structures serve as a crucial indicator of their morphing capacity. This paper derives the linear and non-linear shear properties of a honeycomb structure with zero Poisson’s ratio. A modified factor is introduced to establish a relationship between the linear and non-linear shear modulus of the honeycomb structure, simplifying the calculation method of the non-linear shear modulus. The validity of theoretical predictions is then confirmed using the finite element method Furthermore, the influences of the geometric parameters on the shear properties of the honeycomb structure with zero Poisson’s ratio are investigated, highlighting the varying contributions of these cell geometric parameters to the shear properties.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Calculating study of the turbine at last stage flow field in the small volume flow condition
Autorzy:: Jiang, T.
Jin, J.
Wang, Z.
Cao, L.
Li, B.
Tematy:: turbine
small volume flow
flow model
backflow; Pokaż więcej
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:: https://bibliotekanauki.pl/articles/258680.pdf Link otwiera się w nowym oknie
Opis:: Based on basic equation and boundary layer theory of pneumodynamics, the thesis conducts numerical modeling and theoretical analysis on the last stage of turbine characteristics at a small volume flow by using FLUENT, gives an emphasized analysis on the position of first occurrence of backflow and its expansion direction and comes up with flow structure of the turbine flow field at last stage in the small volume flow condition. In connection with specific experiments, it puts forward the flow model of backflow occurring in the last stage field and the solution to the model. The flow field at last stage for a 100MW turbine in the small volume flow condition that is calculated by using the model is basically in conformity to the actual result.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 10.

Tytuł:: Summary of the port shoreline resource evaluation based on triangular fuzzy analytic hierarchy process
Autorzy:: Jiang, L.
Tao, T.
Zhang, C.
Jiang, H.
Wang, J.
Tematy:: port shoreline evaluation
triangular fuzzy AHP
fuzzy comprehensive evaluation
shoreline of Nanjing port; Pokaż więcej
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:: https://bibliotekanauki.pl/articles/259464.pdf Link otwiera się w nowym oknie
Opis:: Port shoreline resources are the basis of port and shipping development, and its assessment method has become one of the hot issues in port research. On the basis of constructing a reasonable index evaluation system, this paper constructs the fuzzy evaluation matrix based on the triangular fuzzy analytic hierarchy process and constructs the fuzzy evaluation matrix by using the fuzzy comprehensive evaluation method, and obtains the maximum membership degree of the port shoreline resources. Compared with the traditional port shoreline Resource evaluation methods, the new one got more advantages in objective and quantitative. Finally, Combined with the Nanjing section of the Yangtze River as a case for verification, the results show that the model can accurately solve the problem of resource evaluation of port shoreline.
Dostawca treści:: Biblioteka Nauki

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