The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Single-molecule spectroscopy (SMS) is a powerful and versatile technique that can be utilized to unravel the bio-molecule dynamics and to sense specific bio-molecules with extremely high sensitivity. A key requirement for successfully performing SMS is to incorporate suitable reporters/sensors. When the target molecules interact with them, the signals (such as fluorescence intensity/lifetime) can...
A lightweight imaging method based on electrolyte-insulator-semiconductor (EIS) structure was developed to analyze single cells. Cells were cultured on the EIS structure surface, and the impedance of this cell-based biosensor was measured by two-electrode electrochemical system. For the field-effect and internal photoelectric effect of semiconductor and the electric insulativity of living cell, difference...
In this paper, we use the Hilbert-Huang transform (HHT) analysis method to explore the time-frequency characteristics of spike waves for epilepsy symptoms. We obtained a sample of spike I wave and non-spike waves for HHT decomposition using a number of intrinsic mode functions of the Hilbert transform (HT) to determine the instantaneous spectrum, marginal spectrum, and Hilbert energy spectrum. We...
Brain oscillations and connectivity have received considerable attention in cognitive neuroscience. In this study, we recorded the electroencephlography (EEG) signals of thirteen subjects recruited for the natural auditory memory retrieval task. EEGs were recorded using an electrode cap with event-related potentials (ERPs) and event-related spectral perturbations (ERSPs) computed. For evaluating the...
Diabetes is a debilitating metabolic disorder resulting from hyperglycemia and glucose intolerance. High glucose-induced endothelial dysfunction is an important contributor to vascular disease in diabetes. In this study, we profiled the global gene expression changes in human umbilical vein endothelial cells treated with high glucose at the 0-, 24-, and 48-hour intervals. Differentially expressed...
In order to improve the way of data collection and workflow of vital signs measurement in hospital, this paper proposed a Tablet PC based vital signs data collection and information system. This system comprises a database server, Tablet PC, and wireless devices such as blood pressure monitor, infrared thermometer and barcode scanner. The Tablet PC and wireless devices are put on a cart to serve as...
In this study we present a multi-step constant pressure pulse measurement system based on the technology and operating principles of electronic sphygmomanometer. We approach pulse diagnosis in a way that's comparable to pulse diagnosis practiced by traditional Chinese medicine (TCM) physicians, in particular where the administration of superficial, middle, and deep pressure were applied during pulsation...
Laparoscopic surgery is indispensable from the current surgical procedures. Conventional laparoscope (endoscope) systems produce 2D colored video images which do not provide surgeons an actual depth perception of the scene. In this work, the problem was formulated as synthesizing a stereo image of the monocular (conventional) laparoscope image by incorporating into them the depth information from...
Traditional evaluations of human psychological status usually have a great dependence on the experience of the operator, and it is still a challenge to automate the evaluation process. In this study, a new image system ThuPIS (the Tsinghua Psychological Image System) is designed based on Minnesota Multiphasic Personality Inventory (MMPI), a classical personality inventory in clinical mental health...
In this paper, we present a PET and MR brain image fusion method based on wavelet transform for low- and high-activity brain image regions, respectively. Our method can generate very good fusion result by adjusting the anatomical structural information in the gray matter (GM) area, and then patching the spectral information in the white matter (WM) area after the wavelet decomposition and gray-level...
In this paper, a high Common-Mode Rejection Ratio (CMRR) and low power CMOS Instrumentation Amplifier (IA) for use in Bio-impedance Spectroscopy (BIS) is presented. It consists of a complementary Differential Voltage - Current Conveyor (DVCC) that provides the common-mode signal rejection and high input impedance, a Folded - Cascode Operational Transconductance Amplifier (FC-OTA) that serves as a...
A smart phone-based pocket fall accident detection system is proposed in this paper. To realize the system, the angles acquired by the electronic compass and the waveform sequence of the triaxial accelerometer on the smart phone are used as the input signals of the proposed system. The acquired signals are then used to generate an ordered feature sequence and examined in a sequential manner by the...
This paper describes a novel region segmentation method created to enhance spatial relationships in 3-D optical coherence tomography (OCT) images. To reduce the noise and distortion problems in low-resolution OCT images, previous work used the mean value and an enhanced-fuzzy-c-mean algorithm to cluster pixels in 2-D OCT images and find the edge between different clustered regions. To utilize more...
Low level laser therapy (LLLT) is effective in a lot of clinical treatments, but the photobiological basis of this therapy is not well understood. From our previous study, the effectiveness of laser acupuncture (LA) and cupping applied on low back pain (LBP) has been proved. However, the variation of the plasma cortisol level is unknown. Thus, this study aims to evaluate the effectiveness of LA and...
In this paper, a system that records photoplethysmography and performs motion artifact reduction is proposed. In order to calculate SpO2, accurate amplitude of PPG is essential. As a matter of fact that the PPG signal is acquired through an optical sensor, it is prone to be affected by motion artifact. As a result, noise cancellation is a major issue in the calculation of SpO2. In the calculation...
A simple, objective and quantitative unsupervised outcome measure is considered vital in the home-based rehabilitation for stroke patients. The Fugl-Meyer Assessment (FMA) scale is widely utilized in the clinical practice, while not suitable in the home settings due to its subjective and time-consuming property. In this paper, a Support Vector Regression (SVR) based evaluation model was presented...
Blood typing is a critical test in many medical procedures, especially for blood transfusion. Incompatible red blood cells (RBCs) in transfusion might result in intravascular hemolysis and even cause recipient's death. The test result of blood typing can be determined by observing the agglutination of RBCs. In this study, a novel method for determining the extent of RBC agglutination using the integrated...
A 23(cm) × 11(cm) tissue cancer detector based on frequency-domain photon migration (FDPM) technique is studied in this paper. The high cost and bulky network analyzer-based FDPM was implemented on PCB with high phase sensitivity. A Network Analyzer costs over one million NT dollars however the proposed detector costs only about several thousand NT dollars. So the proposed FDPM architecture features...
This paper presents a tracking control circuit designed with a standard TSMC 5V 0.35-µm CMOS technology for smart vehicle. The infrared rays are used to detect the distance between the traffic lanes and the vehicle position. The proposed tracking control circuit can correct the vehicle position when the vehicle represents a departure from its traffic lane. Moreover, because the external relays are...
Develop a system with heart-rate detecting function, convenient-moving and effectively to ease the medical staff's working efficiency when facing the patients in clinic is our main goal. Prognosis, which means the results of disease-prediction based on groups of clue's samples in medical, the bigger the samples, the more precise the prognosis. This research uses the conductive silk in the textile...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.