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Polymer Modelling in Wall Ironing Simulations of a PET-Steel Laminate
J. Mulder,G.T. Nagy,P. ?u?tari?,T. ?u?tar,T. Rodi? 한국소성가공학회 2010 기타자료 Vol.2010 No.6
Steel laminates with a poly(ethylene terephthalate) coating can provide an environmental friendlier solution for packaging applications than current lacquered processes. One of the most challenging applications is the beer and beverage can where the PET layer is subjected to high temperatures (> 100°C), high strain rates (> 3000 1/s) and high hydrostatic pressure (> 500 MPa) in the wall ironing process. Specific issues to be solved are polymer hairs in the process and scuffing or scraping of the coating. A realistic simulation of the wall ironing process is needed to understand the processing conditions that influence these phenomena. The Arruda-Boyce model proved to be a good constitutive model for PET in the as supplied state as well as the deformed state of the coating. An improvement can be made by a full thermomechanical coupling of strain rate, temperature and pressure. The major factor of influence in the wall ironing process is the entry angle of the ironing die. To overcome issues with the required small entry angle and high expansion forces in the die a special die profile has been patented.
Spin asymmetries in jet-hyperon production at LHC
Boer, D.,Bomhof, C.J.,Hwang, D.S.,Mulders, P.J. North-Holland Pub. Co 2008 Physics letters: B Vol.659 No.1
We consider polarized Λ hyperon production in proton-proton scattering, pp->(Λ<SUP>&</SUP>uarr;jet)jetX, in the kinematical region of the LHC experiments, in particular the ALICE experiment. We present a new Λ polarization observable that arises from the Sivers effect in the fragmentation process. It can be large even at midrapidity and therefore, is of interest for high energy hadron collider experiments. Apart from its potential to shed light on the mechanisms behind the phenomenon of Λ polarization arising in unpolarized hadronic collisions, the proposed observable in principle also allows to test the possible color flow dependence of single spin asymmetries and the (non)universality of transverse momentum dependent fragmentation functions.
Amanda G.Y. Chen,Marleen S.L. Offereins,Christopher J. Mulder,Christopher M. Frampton,Richard B. Gearry 한국식품영양과학회 2018 Journal of medicinal food Vol.21 No.12
We investigated the impact of the ingestion of two green kiwifruit (Actinidia deliciosa var. Hayward) and one Royal Gala apple on breath hydrogen and methane production in humans. Consumption of two green kiwifruit led to no evidence of carbohydrate malabsorption (0/20), whereas consumption of one apple was associated with carbohydrate malabsorption in 6/20 participants (P = .008). There were no significant differences in the area under the curve for hydrogen or methane breath concentrations after consumption of the two fruits. Rates of lactose and fructose breath tests in this cohort were within expected parameters. Green kiwifruit are not associated with clinically significant carbohydrate malabsorption compared with apples in this pilot study.