13 documents found, page 1 of 2
Optimization for a multi-constraint truck appointment system considering mornin...
Xu, B.; Liu, X.; Yang, Y.; Li, J.; Postolache, O.Gate and yard congestion is a typical type of container port congestion, which prevents trucks from traveling freely and has become the bottleneck that constrains the port productivity. In addition, urban traffic increases the uncertainty of the truck arrival time and additional congestion costs. More and more container terminals are adopting a truck appointment system (TAS), which tries to manage the truck arr...
Exploring the resilience of uncertain nonlinear handling chain systems in conta...
Xu, B.; Li, J.; Yang, Y.; Wu, H.; Dai, W.; Postolache, O.Uncertain handling chain system (HCS) of container ports brings steady-state error to the original control decisions, and even worse, dramatically degrades the system performance. The steady-state error will cause unsatisfied freight requirement to be much higher than the expected value for a long time, resulting in the decrease of system robustness and resilience. In this work, a novel sliding mode control wit...
Polymeric hydrogel coating for modulating the shape of keratin fiber
Wang, Lanlan; Cavaco-Paulo, Artur; Xu, B.; Martins, MadalenaHydrogel coating was explored to modulate the shape of keratin hair fiber. The motivation was the development of an eco-friendly methodology with non-toxic chemicals to modulate keratin fiber. Polymeric hydrogel of acrylic acid and N-N-dimethylacrylamide was prepared by free-radical polymerization in aqueous solution, using nano-alumina particles as crosslinker and potassium persulfate as an initiator. Physico-...
Humidity induces changes in the dimensions of hydrogel-coated wool yarns
Wang, Lanlan; Cavaco-Paulo, Artur; Xu, B.; Sá, M.Polymeric hydrogel based on acrylic acid (AA) and N,N-dimethylacrylamide (DMAA) was prepared by photopolymerization reaction, using nano-alumina as the inorganic crosslinker. Hydrogel-coated wool yarns determine their dimensional changes under humidity conditions. Surface morphology of the hydrogel-coated wool yarns was carried out using SEM microscopy. The hydrogel was further characterized by Fourier transfor...
Ultrasound-assisted lipase catalyzed hydrolysis of aspirin methyl ester
Chiplunkar, Pranali P.; Zhao, Xiaoman; Tomke, Prerana D.; Noro, Jennifer; Xu, B.; Wang, Qiang; Silva, Carla; Pratap, Amit P.; Cavaco-Paulo, ArturThe ultrasound-assisted hydrolysis of aspirin methyl ester (AME) was investigated using immobilized Candida antarctica lipase B (CALB) (1%) in the presence of solvents like triolein, chloroform (CHCl3) and dichloromethane (DCM). The effect of ultrasound and the role of water on the conversion rates have also been investigated. Proton nuclear magnetic resonance spectroscopic (1H NMR) was chosen to calculate hydr...
Robust modeling and planning of radio-frequency identification network in logis...
Xu, B.; Li, J.; Yang, Y.; Postolache, O.; Wu, H.To realize higher coverage rate, lower reading interference, and cost efficiency of radio-frequency identification networkin logistics under uncertainties, a novel robust radio-frequency identification network planning model is built and arobust particle swarm optimization is proposed. In radio-frequency identification network planning model, coverage isestablished by referring the probabilistic sensing model o...
Anthropometric data collection of Portuguese children using 3D body scanning: c...
de Campos, R; Carvalho, M. A.; Lopes, H. P.; Xu, B.This paper presents some considerations regarding the scanning booth used in an anthropometric study done with a 3D body scanning technology. The data collected is part of a Ph.D. study conducted in Textile Engineering at University of Minho in Portugal, which aims to develop clothing for overweight and obese Portuguese children aged 2-11 years, of both genders. The challenges faced during data collection are d...
Sizing for the apparel industry using statistical analysis - a Brazilian case s...
Capelassi, C. H.; Carvalho, Miguel; El Kattel, C.; Xu, B.The study of the body measurements of Brazilian women used the Kinect Body Imaging system for 3D body scanning. The result of the study aims to meet the needs of the apparel industry for accurate measurements. Data was statistically treated using the IBM SPSS 23 system, with 95% confidence (P<0,05) for the inferential analysis, with the purpose of grouping the measurements in sizes, so that a smaller number of ...
Anthropometric data collection of Portuguese children using 3D body scanning: c...
Campos, Raquel de; Carvalho, Miguel; Lopes, H. P.; Xu, B.This paper presents some considerations regarding the scanning booth used in an anthropometric study done with a 3D body scanning technology. The data collected is part of a Ph.D. study conducted in Textile Engineering at University of Minho in Portugal, which aims to develop clothing for overweight and obese Portuguese children aged 2-11 years, of both genders. The challenges faced during data collection are d...
Lipase-ultrasound assisted synthesis of polyesters
Tomke, Prerana D.; Zhao, Xiaoman; Chiplunkar, Pranali P.; Xu, B.; Wang, Hongbo; Silva, Carla; Rathod, Virendra K.; Cavaco-Paulo, ArturPoly (ethylene glutarate), poly (ethylene malonate) and poly (ethylene phthalate), were enzymatically synthesized by immobilized Candida antarctica lipase B in solvent free conditions. The synthesis of these polyesters was based on the ester-ester exchange reaction between ethylene glycol diacetate and di-ethyl glutarate, di-benzyl malonate, di-n-octyl phthalate to produce poly (ethylene glutarate), poly (ethyl...