Due to hollow and tubular structure, a natural kapok fiber (KF) was used as the support and orientation matrix to control the polymerization of ethyleneglycol dimethacrylate (EGDMA) and N-vinylimidazole (VIM) along its inherent axial surface via a facile in situ rapid polymerization reaction in air atmosphere. The as-formed KF@VIM/EGDMA composite is featured with porous surface and rich N-conta...

The Kölliker-Fuse nucleus (KF) in the dorsolateral pons has been shown to be the major source of catecholamine innervation of the spinal cord. This has important implications in terms of pain control mechanisms, since catecholamine-mediated mechanisms are essential for the expression of opiate and other varieties of antinociception. This study examines the effects of KF stimulation on responses...

Hamstring muscle function during knee flexion has been linked to hamstring injury and performance. However, it is unclear whether alone (KF) requires similar electromyography (EMG) activity pattern simultaneous hip extension (HE-KF), a combination that occurs in the late swing phase of sprinting. This study examined HE-KF maximal voluntary isometric contraction (MVIC) evokes higher biceps femor...

OBJECTIVES Ketotifen fumarate (KF) is a selective and noncompetitive histamine antagonist (H1-receptor) that is used topically in the treatment of allergic conditions of rhinitis and conjunctivitis. The aim of this study was to formulate and improve an ophthalmic delivery system of KF. Ocular nanoparticles were prepared with the objective of reducing the frequency of administration and obtainin...

Wilson disease is a pathology because of a gene mutation causing malfunction in the copper excretion from the organism. Therefore, copper accumulation in the human body gives rise to oxidative processes. Hence, Wilson disease causes several disorders including affecting tissues and organs. Neurological disorders leads to copper accumulation in the human body. Approximately 95% of individuals wi...

—Traditional Kalman filter (KF) is derived under the well-known minimum mean square error (MMSE) criterion, which is optimal under Gaussian assumption. However, when the signals are non-Gaussian, especially when the system is disturbed by some heavy-tailed impulsive noises, the performance of KF will deteriorate seriously. To improve the robustness of KF against impulsive noises, we propose in ...

Abstract: Aircraft engine gas-path health monitoring (GPHM) plays a critical role in engine health management (EHM). Among model-based approaches, the Kalman filter (KF) has been widely employed in GPHM. The main shortcoming of KF-based scheme lies in the lack of robustness against uncertainties. To enhance robustness, this paper describes a new GPHM architecture using a sliding mode observer (...

Measurement and on-line display of reactivity are of great help in calibration of reactivity control and safety devices and planning of suitable actions during the reactor operation. Reactivity can be estimated by the traditional Inverse Point Kinetics (IPK) method or by a recently developed Kalman filtering (KF) based method. The KF based reactivity estimation proves superior to IPK method, es...

Obstacle avoidance is an essential function for the navigation of mobile robots. Noise filtering improves the measurement accuracy of senors and plays an important role for obstacle avoidance in the applications of mobile robots. This study evaluates the performance of the extended Kalman filtering (EKF) and Kalman filtering (KF) for obstacle avoidance of a two-wheeled mobile robot. EKF is an a...