Impact of new K Area geotechnical parameters on K Reactor restart response spectra

Amin, J.A.; Chen, R.C.; Mulliken, J.S.

doi:10.2172/5059235

Cited by 2 publications

(3 citation statements)

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“…The addition of UPE NPs to the hydrogel did not increase hemolysis significantly compared to that of hydrogel coatings alone. Importantly, the NPs and the coatings observed hemolysis much below the acceptable hemolysis limit 36 . Thus, the nanoparticles and coating strategies used were confirmed to be cyto-compatible and hemo-compatible.…”

Section: Cyto-and Hemo-compatibility Of Nanoparticles and Coatingsmentioning

confidence: 95%

Nanoparticle eluting-angioplasty balloons to treat cardiovascular diseases

Iyer

Kuriakose

Yaman

et al. 2019

International Journal of Pharmaceutics

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Nanoparticles (NPs) can be used to locally deliver anti-restenosis drugs when they are infused directly to the injured arteries after intervention procedures such as angioplasty. However, the efficacy of transferring NPs via infusion to the arterial wall is limited, at least partially, due to poor NP retention on the inner artery wall. To improve NP retention, angioplasty balloons coated with drug-loaded NPs were fabricated via either layer-by-layer (LbL) electrostatic coating or acrylicbased hydrogel (AAH) coating techniques. Three types of NPs, namely poly (lactide-co-glycolide) (PLGA), biodegradable photo-luminescent PLGA and urethane doped polyester were studied. The transfer efficacy of NPs from various coatings to the arterial wall were further evaluated to find the optimal coating conditions. The ex vivo NP transfer studies showed significantly more NPs being transferred to the rat arterial wall after the angioplasty procedure by the AAH coating (95% transfer efficiency) compared to that of the LbL technique (60%) and dip coating (20%) under flow conditions (10 dyn/cm 2 ). Our results suggest that the AAH coating of drug-loaded NPs on the angioplasty balloon could potentially provide superior retention of drug-loaded NPs onto the arterial wall for a better local delivery of drug-loaded NPs to effectively treat arterial diseases.

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Section: Cyto-and Hemo-compatibility Of Nanoparticles and Coatingsmentioning

confidence: 95%

Nanoparticle eluting-angioplasty balloons to treat cardiovascular diseases

Iyer

Kuriakose

Yaman

et al. 2019

International Journal of Pharmaceutics

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“…Therefore, in this paper, an improved control mechanism for WRIG has been developed for the minimization of the copper losses of the machine over the entire period of operation. The optimum efficiency operation of the WRIG has been addressed in [13] and [14]. A flux weakening mechanism is used in [13] and the adaptable stator flux technique has been implemented in [14].…”

Section: Introductionmentioning

confidence: 99%

“…The optimum efficiency operation of the WRIG has been addressed in [13] and [14]. A flux weakening mechanism is used in [13] and the adaptable stator flux technique has been implemented in [14]. However, the issue of magnetic circuit saturation over low wind speed situations limits its applicability over wide speed range operation.…”

Section: Introductionmentioning

confidence: 99%

Accurate MRAS Embedded Minimum Copper-Loss Based Controller for WRIG Coupled With Variable Speed Wind Turbine

Parida,

Paul,

Chatterjee

2023

IEEE Access

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Sensorless control of the wound rotor induction generator (WRIG) using the model reference adaptive system (MRAS) technique is an attractive option in wind energy generation schemes. However, the accuracy of MRAS under variable wind speed situations is a major issue as the rotor current of the WRIG continuously changes. To address this issue, in this paper, a simple MRAS model has been developed considering the air-gap reactive power of the WRIG as the adaptable variable for the computation of WRIG rotor position. The accuracy of the proposed model is comparatively high and almost insensitive to the machine parameter variation of the generator. The maximum rotor position estimation error is found to be 0.009 (rad.) for a 50% variation of the magnetizing inductance of the WRIG. Thus, the model is comparatively reliable. Also, the optimized efficiency operation of the WRIG is another major issue in terms of maintenance cost and life expectancy of the WRIG. Therefore, to address this issue, a minimum copper-loss-based control technique has been developed and presented in this paper for rotor side converter control (RSC) of the WRIG. It has been observed that the proposed control technique improves by 1% efficiency in comparison to similar types of other controllers. The proposed MRAS model has been embedded with the proposed RSC controller to improve the accuracy in control and the efficiency of the wind energy generation system. The proposed system is implemented with appropriate simulations and hardware using a wound rotor induction machine of 2.5kW, and a dSPACE CP1104 modulation device, which produces acceptable results.INDEX TERMS Model reference adaptive system, optimum efficiency, sensorless control, wound rotor induction generator.

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Impact of new K Area geotechnical parameters on K Reactor restart response spectra

Abstract: This repo,_ was prepared as an account of work sponsored by an agency of the United States Government.

Cited by 2 publications

References 0 publications

Nanoparticle eluting-angioplasty balloons to treat cardiovascular diseases

Nanoparticle eluting-angioplasty balloons to treat cardiovascular diseases

Accurate MRAS Embedded Minimum Copper-Loss Based Controller for WRIG Coupled With Variable Speed Wind Turbine

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