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Search Results: 1 - 10 of 546707 matches for " S.H. Wang "
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A Decomposition-Based Algorithm for Flexible Flow Shop Scheduling with Stochastic Processing Times
K. Wang,S.H. Choi
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
Decomposition-Based Scheduling for Makespan Minimisation of Flexible Flow Shop with Stochastic Processing Times
K. Wang,S.H. Choi
Engineering Letters , 2010,
Abstract:
Morphology and damping behavior of polyurethane/PMMA simultaneous interpenetrating networks
Wang, S.H.;Zawadzki, S.;Akcelrud, L.;
Materials Research , 2001, DOI: 10.1590/S1516-14392001000100007
Abstract: a series of polyurethane/pmma simultaneous interpenetrating networks (sins) with various hard segment contents (x) in the polyurethane phase (x = 15.5 to 36.5% in polyurethane) and wide range of polyurethane (pu) to polyacrylate (pa) ratio (pu/pa = 20:80 to 80:20) were prepared, and the damping and mechanical properties of these materials were studied. the damping of polyurethane soft phase was increased and shifted to lower temperature with increased content of pa vitreous phase. the mechanical properties were improved with increasing pa contents. the results show that pa and the polyurethane hard segment interaction play a special role in chain interpenetration density and its magnitude is revealed by the decreased dispersed domain size observed by scanning electron microscopy (sem) and increased loss area as measured by dynamic mechanical thermal analysis (dmta). when the weight ratio of pu/pa was 40:60, the resulting sin materials possessed better damping properties, independent of x concentration.
Morphology and damping behavior of polyurethane/PMMA simultaneous interpenetrating networks
Wang S.H.,Zawadzki S.,Akcelrud L.
Materials Research , 2001,
Abstract: A series of polyurethane/PMMA simultaneous interpenetrating networks (SINs) with various hard segment contents (X) in the polyurethane phase (X = 15.5 to 36.5% in polyurethane) and wide range of polyurethane (PU) to polyacrylate (PA) ratio (PU/PA = 20:80 to 80:20) were prepared, and the damping and mechanical properties of these materials were studied. The damping of polyurethane soft phase was increased and shifted to lower temperature with increased content of PA vitreous phase. The mechanical properties were improved with increasing PA contents. The results show that PA and the polyurethane hard segment interaction play a special role in chain interpenetration density and its magnitude is revealed by the decreased dispersed domain size observed by scanning electron microscopy (SEM) and increased loss area as measured by dynamic mechanical thermal analysis (DMTA). When the weight ratio of PU/PA was 40:60, the resulting SIN materials possessed better damping properties, independent of X concentration.
Experimental investigation and thermodynamic modeling of the Zr-Y system
Bu M.J.,Wang P.S.,Xu H.H.,Liu S.H.
Journal of Mining and Metallurgy, Section B : Metallurgy , 2010, DOI: 10.2298/jmmb1002181b
Abstract: Based on the critical review of all the available experimental data in the literature, 8 key alloys were prepared by arc melting to investigate the phase equilibria in the Zr-Y system, These alloys, which were annealed at 5 different temperatures (800°C, 1000°C, 1100°C, 1120°C, 1160°C), were analyzed by means of X-ray diffraction, differential scanning calorimetry, optical microscopy and scanning electron microscopy with energy-dispersive X-ray spectroscopy. The results showed that a peritectoid reaction (βZr) + (αY) = (αZr) occurs at 886°C ± 5°C, and an eutectic reaction L = (βZr) + (αY) occurs at 1313°C ± 5°C. Taking into account the experimental data obtained both from this work and the literature, the Zr-Y system was thermodynamically modeled. The previously reported temperature for the peritectic reaction of (βY) + L = (αY) at about 1490 °C is supported by our thermodynamic calculation. Comparison between the calculated and measured phase diagrams shows that the thermodynamic calculation can well account for the experimental data.
Shelf-life and Microbiological Profiler of Chicken Wing Products Following Sous vide Treatment
S.H. Wang,M.H. Chang,T.C. Chen
International Journal of Poultry Science , 2004,
Abstract: Chicken wings were vacuum-packaged and cooked (sous vide) at 75 and 90°C until the internal temperature reached 73.8°C was reached. The cooked samples were stored at 2 and 7°C, separately. The TBA values, aerobic plate count, aerobic and anaerobic plate counts and Warner-Bratzler (WB) shear force of the samples were evaluated weekly for 7 wk. The sous vide treatment chicken wings had lower TBA values, aerobic and anaerobic plate counts throughout the 7 wk of storage when compared with the control. The sous vide treatment did not affect the WB shear force of chicken wings. At 2°C, the sous vide cooked chicken wings had a shelf life of at least 7 wk. Results demonstrate that sous vide treatment was an effective method to prevent lipid oxidation during storage and enhance shelf life of chicken wing products.
Effects of landscape fragmentation on genetic diversity of Stipa krylovii roshev (Stipa L.) in agro-pastoral ecotone in Northern China
X.Q Sui, K Wang, S.H Zheng, S.Z An, L Li
African Journal of Biotechnology , 2009,
Abstract: Stipa krylovii Roshev (Stipa L.) is one of the most important grass species for rangeland ecology and animal husbandry. But some populations of this species are under threat due to landscape fragmentation and habitat isolation resulting from the reclamation and cultivation in ecotone. To determine if and how these disturbances have impacted on genetic structure of S. krylovii populations, an inter-simple sequence repeat (ISSR) markers was used to characterize them for the first time in China. S. krylovii populations from 10 isolated patches were compared with population from unbroken natural rangeland. Eight primers screened were employed to assess genetic diversity within and among populations. The results revealed the total genetic diversity (Ht) and the within population genetic diversity (Hs) were 0.2054 and 0.1388 respectively, while the coefficient of genetic differentiation (Gst) were 0.3241 suggesting more variability within the populations than among them. The cluster pattern of S. krylovii indicated that the populations with larger habitat size were grouped together with CK population in one cluster; likewise, populations with moderate habitat size and smaller area were also grouped together respectively, while the smallest population formed itself into a solo cluster due to genetically different from others. These findings may be early signs of fragmentation effects that in the future will result in species loss even if the present populations are maintained.
A Unified Framework of Data Exchange Mechanism in an Intelligent Transportation System
S.C. Wang,S.H. Pan,Y.L. Lo,K.Q. Yan
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
On the Sackur-Tetrode equation in an expanding universe
Pereira, S.H.;
Revista mexicana de física E , 2011,
Abstract: in this work we investigate the thermodynamic properties satisfied by an expanding universe filled with a monoatomic ideal gas. we show that the equations for the energy density, entropy density and chemical potential remain the same of an ideal gas confined to a constant volume v. in particular the sackur-tetrode equation for the entropy of the ideal gas is also valid in the case of an expanding universe, provided that the constant value that represents the current entropy of the universe is appropriately chosen.
A rhenium-gold contact alloy for sensitive relays
S.H.
Gold Bulletin , 1976, DOI: 10.1007/BF03215422
Abstract:
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