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We have developed surface plasmon interferometric microscope and demonstrated that by integrating a phase spatial light modulator (SLM) on conjugate back focal plane of confocal microscope objective lens, this enables us to perform surface plasmon phase imaging and phase sensing using phase stepping interferometry over well confined region [1-6]. In this paper, we address one of the key limitations...
Two types of augmented feedback (FB) were compared during reaching training in the Virtual Reality (VR) environment for chronic stroke patients. Six participants were assigned to receive either the Knowledge of Result (KR) or the Knowledge of Performance (KP) FB. They went through 12 training sessions, of which there were 75 Reach-to-Target trials in the VR. They were instructed to perform the actions...
Regeneration of damaged tissues by cell-based strategies has attracted much interest in various tissue engineering applications. For the repair of small cartilage defects, in situ encapsulation of stem cells in injectable, photopolymerizable hydrogels can be used to facilitate new cartilage formation with minimal invasive surgery. In this study, poly(ethylene glycol) diacrylate (PEGDA) hydrogels embedded...
A shunt-series mixed resonant coupled structure for the implantable medical devices is demonstrated experimentally. The experiment conducted by using 1 cm thickness pork tissue at 6.78 MHz operating frequency. The transmitter coil outside the pork tissue, the 4 cm square coils on 2-layer PCB is used. On the while, the receiver coil inside the pork tissue, 1 cm diameter of copper wire is used. The...
Nowadays stroke is the third leading cause of mortality of all life periods. The statistics from the Office of the National Economic and Social Development Board (NESDB) between 1994 and 2013 found that the stroke caused 255,307 cases mortality. Period of treatment in stroke patients depends on symptom and damage of organs. It seems to be beneficial if the data analysis method likes data mining can...
Pulmonary microwave ablation has been trailed and became dramatically recognized as an alternative surgical method for lung cancer treatment due to its minimal invasive technique and destroyable only a small part of malignant tissue. Even though, lung is realized as a porous tissue in which filled of humid air and a capillary network that rather difficult to control an ablation region, then a prediction...
For the first time, FEM analysis was utilized to study the ways in which RAMPA affects the human skull. We calculated the deformation of the completed model with ANSYS Software and analyzed the effect of RAMPA on the human skull with the obtained data. Moreover, by comparing to actual patient treatments, we validated the feasibility of this engineering approach and provide suggestions for treatment...
A small current through low frequency is able to treat patients by attenuating or malfunctioning mechanism of microbes which flow through the blood. In addition, the performance delivery of oxygen and nutrients in blood are improved. With the advance, blood viscosity and hematocrit are coincidentally approached to normal level, adaptive flow-rate. This paper proposes the conceptual design of an electrotherapeutic...
Freshwater stingray is one of the ornamental fish trade in Thailand. The information of reproductive management has been limited. No studies have been carried out on ovarian status. Therefore, the main objective of this study was to apply and develop techniques for monitoring ovarian status in freshwater stingray by using ultrasonography. The ovarian fecundity varied among species and only the left...
Autonomic dysfunction is known to be associated with sleep apnea and insulin resistance. With the growing prevalence of obesity, the common factor among subjects with sleep apnea and insulin resistance, we sought to determine how autonomic cardiovascular function is affected by the independent and combined effects of sleep apnea and insulin resistance at the early stage of these syndromes. In this...
This paper is a part of designing a volume catheter monitor using conductance techniques. An electronic instrument has been constructed for real-time blood volume monitoring during the cardiac cycle. Results show how possible to design and construct electric current driver and voltage measuring circuits via electrodes of a conductance catheter for blood volume measurement.
This paper presented a design of angle measurement system using accelerometer and Arduino. The main components consist of 2 parts, ADXL33S Accelerometer IC chip and Arduino microcontroller. The function of ADXL335 Accelerometer is to perform an AC amplification, Demodulation unit, and output amp. The Arduino serves as signal amplification, analog to digital converter, low pass filter, isolator and...
Functional electrical stimulation has been introduced for over five decade to help paralyzed patients regain some lost functions. The technology, however, still does not exist in Thailand. The high cost of imported devices makes it unaffordable for most Thai people. The purpose of this project is to develop the FES technology for the country. Our device IS a common peroneal nerve stimulator for foot-drop...
A patient-ventilator system is introduced where the input is pressure support level (PSV) from the ventilator and the output is the patient's mechanical work of breathing per minute, or power of breathing (POB). With higher level of pressure support from the ventilator, less effort is needed by the patient to attain the needed the level of ventilation. However, due to several physiological control...
The Electric Pulp Test (EPT) is one of the common method to evaluate the pulp vitality. Generally, the devices which provided in Thailand are imported and mostly expensive which limited the use of this technique. Then the objective of this research is to design and construct the low-cost electric pulp tester. The devices consisted of 3 parts; part 1 is the current source, part 2 is the current display...
Vast variety of EMG signal applications have been proposed and practiced on EMG control system such as rehabilitation and prosthetic hand and so on. In this paper, a realization of a robust real time robotic arm control system is proposed. First, the root mean square (RMS) of EMG signal for a hand movement is measured and the measured EMG signal is transformed to a complex number. Secondly, the transformed...
The aim of this study is to find appropriate parameters of a trapping device, i.e. equilateral triangular microwell array, using a computational simulation. This simulation was divided into nine cases of microwell with various depths and widths to help analyze the effects of them on velocity and vorticity distribution induced inside the microwell. The microwells with equilateral length of 40, 60 and...
Recording the electrical current of the cortex is called electroencephalography (EEG). EEG signals can be affected by high and low frequency noises which are caused due to muscular activity (EMG), Power line interference, eye blinks and etc. In this paper, we introduce an adaptive wavelet method for elimination of high frequency noises from EEG. The desired noise is extracted from the raw signal by...
Physically modified (pregelatinized or pregel) and chemically modified (hydroxypropyl, acid-thinned) tapioca starches were used to prepare plasma expander (PE). Physical properties such as pH, turbidity, colloid osmotic pressure and viscosity were determined. Pregel and hydroxypropyl, acid-thinned tapioca starch-based PEs had high turbidity. Colloid osmotic pressure and pH of hydroxypropyl, acid-thinned...
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