There are two different methods for coronary artery bypass grafting: end-to-side and side-to-side anastomosis. In vitro mock test, flow visualization and animal experiments were performed in parallel to compare the he...There are two different methods for coronary artery bypass grafting: end-to-side and side-to-side anastomosis. In vitro mock test, flow visualization and animal experiments were performed in parallel to compare the hemodynamic effect between two methods. Thus, bioengineers can provide practical useful information to the clinical team.展开更多
The purpose of this research is to develop an inexpensive pulsatile blood pump system for short-term use, as a combination of the usage of IABP console and spiral vortex pump. In vitro hydrodynamic test and in vitro h...The purpose of this research is to develop an inexpensive pulsatile blood pump system for short-term use, as a combination of the usage of IABP console and spiral vortex pump. In vitro hydrodynamic test and in vitro hemolysis test were conducted to check the practical performance.展开更多
The edge-to-edge technique is one of the surgical procedures for anterior mitral leaflet prolapse. The purpose of this study is to evaluate the effect of this technique by using an in vitro mitral simulator. The resul...The edge-to-edge technique is one of the surgical procedures for anterior mitral leaflet prolapse. The purpose of this study is to evaluate the effect of this technique by using an in vitro mitral simulator. The results provide a useful suggestion and can be contributed to evidence-based medicine (EBM).展开更多
The effects of enzyme treatments on the functional properties of commercial pea protein,pea:rice protein blend(3:2),pea:oat protein blend(1:1),and pea:hemp protein blend(1:1)were investigated.Treatments were applied t...The effects of enzyme treatments on the functional properties of commercial pea protein,pea:rice protein blend(3:2),pea:oat protein blend(1:1),and pea:hemp protein blend(1:1)were investigated.Treatments were applied through hydrolysis(pepsin or papain),crosslinking(transglutaminase,TG),and their combination(pepsin+TG or papain+TG).The protein content of each protein blend increased slightly or remained unchanged under treatments involving papain but decreased after treating with pepsin or pepsin+TG.Surface hydrophobicity increased for pea,pea:rice,and pea:oat blends after all enzyme treatments.Water holding capacity decreased for all samples compared to the untreated materials.For oil holding capacity,there was only improvement in the pea:rice blend with TG and pea:hemp with papain and papain+TG.Emulsion stability of pea:rice and pea:oat blends increased after all treatments;pepsin treatment specifically improved the emulsion stability to over 90%.Foaming capacity of each protein blend increased under all enzyme treatments whereas the foaming stability improved for the pea:rice blend but decreased for the pea:hemp blend.All treatments increased protein solu-bility.Specific enzyme treatment can be used to tailor the functionality of commercial plant protein blends.展开更多
A fully coherent free electron laser(FEL) seeded with a higher-order harmonic(HH) pulse from high-order harmonic generation(HHG) is successfully operated for a sufficiently prolonged time in pilot user experiments by ...A fully coherent free electron laser(FEL) seeded with a higher-order harmonic(HH) pulse from high-order harmonic generation(HHG) is successfully operated for a sufficiently prolonged time in pilot user experiments by using a timing drift feedback. For HHG-seeded FELs, the seeding laser pulses have to be synchronized with electron bunches. Despite seeded FELs being non-chaotic light sources in principle, external laser-seeded FELs are often unstable in practice because of a timing jitter and a drift between the seeding laser pulses and the accelerated electron bunches. Accordingly,we constructed a relative arrival-timing monitor based on non-invasive electro-optic sampling(EOS). The EOS monitor made uninterrupted shot-to-shot monitoring possible even during the seeded FEL operation. The EOS system was then used for arrival-timing feedback with an adjustability of 100 fs for continual operation of the HHG-seeded FEL. Using the EOS-based beam drift controlling system, the HHG-seeded FEL was operated over half a day with an effective hit rate of 20%–30%. The output pulse energy was 20 μJ at the 61.2 nm wavelength. Towards seeded FELs in the water window region, we investigated our upgrade plan to seed high-power FELs with HH photon energy of 30–100 e V and lase at shorter wavelengths of up to 2 nm through high-gain harmonic generation(HGHG) at the energy-upgraded SPring-8Compact SASE Source(SCSS) accelerator. We studied a benefit as well as the feasibility of the next HHG-seeded FEL machine with single-stage HGHG with tunability of a lasing wavelength.展开更多
文摘There are two different methods for coronary artery bypass grafting: end-to-side and side-to-side anastomosis. In vitro mock test, flow visualization and animal experiments were performed in parallel to compare the hemodynamic effect between two methods. Thus, bioengineers can provide practical useful information to the clinical team.
文摘The purpose of this research is to develop an inexpensive pulsatile blood pump system for short-term use, as a combination of the usage of IABP console and spiral vortex pump. In vitro hydrodynamic test and in vitro hemolysis test were conducted to check the practical performance.
文摘The edge-to-edge technique is one of the surgical procedures for anterior mitral leaflet prolapse. The purpose of this study is to evaluate the effect of this technique by using an in vitro mitral simulator. The results provide a useful suggestion and can be contributed to evidence-based medicine (EBM).
基金support for this research was provided by Roquette America IncProtein Industries Canada.
文摘The effects of enzyme treatments on the functional properties of commercial pea protein,pea:rice protein blend(3:2),pea:oat protein blend(1:1),and pea:hemp protein blend(1:1)were investigated.Treatments were applied through hydrolysis(pepsin or papain),crosslinking(transglutaminase,TG),and their combination(pepsin+TG or papain+TG).The protein content of each protein blend increased slightly or remained unchanged under treatments involving papain but decreased after treating with pepsin or pepsin+TG.Surface hydrophobicity increased for pea,pea:rice,and pea:oat blends after all enzyme treatments.Water holding capacity decreased for all samples compared to the untreated materials.For oil holding capacity,there was only improvement in the pea:rice blend with TG and pea:hemp with papain and papain+TG.Emulsion stability of pea:rice and pea:oat blends increased after all treatments;pepsin treatment specifically improved the emulsion stability to over 90%.Foaming capacity of each protein blend increased under all enzyme treatments whereas the foaming stability improved for the pea:rice blend but decreased for the pea:hemp blend.All treatments increased protein solu-bility.Specific enzyme treatment can be used to tailor the functionality of commercial plant protein blends.
文摘A fully coherent free electron laser(FEL) seeded with a higher-order harmonic(HH) pulse from high-order harmonic generation(HHG) is successfully operated for a sufficiently prolonged time in pilot user experiments by using a timing drift feedback. For HHG-seeded FELs, the seeding laser pulses have to be synchronized with electron bunches. Despite seeded FELs being non-chaotic light sources in principle, external laser-seeded FELs are often unstable in practice because of a timing jitter and a drift between the seeding laser pulses and the accelerated electron bunches. Accordingly,we constructed a relative arrival-timing monitor based on non-invasive electro-optic sampling(EOS). The EOS monitor made uninterrupted shot-to-shot monitoring possible even during the seeded FEL operation. The EOS system was then used for arrival-timing feedback with an adjustability of 100 fs for continual operation of the HHG-seeded FEL. Using the EOS-based beam drift controlling system, the HHG-seeded FEL was operated over half a day with an effective hit rate of 20%–30%. The output pulse energy was 20 μJ at the 61.2 nm wavelength. Towards seeded FELs in the water window region, we investigated our upgrade plan to seed high-power FELs with HH photon energy of 30–100 e V and lase at shorter wavelengths of up to 2 nm through high-gain harmonic generation(HGHG) at the energy-upgraded SPring-8Compact SASE Source(SCSS) accelerator. We studied a benefit as well as the feasibility of the next HHG-seeded FEL machine with single-stage HGHG with tunability of a lasing wavelength.
