Yan-Jun Huang

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Electroencephalography (EEG) is an important biopotential, and has been widely applied in clinical applications. The conventional EEG electrode with conductive gels is usually used for measuring EEG. However, the use of conductive gel also encounters with the issue of drying and hardening. Recently, many dry EEG electrodes based on different conductive(More)
A new water-soluble polysaccharide (longan polysaccharide 1 (LP1)) was extracted and successfully purified from Dimocarpus longan pulp via diethylaminoethyl (DEAE)-cellulose anion-exchange and Sephacryl S-300 HR gel chromatography. The chemical structure was determined using Infrared (IR), gas chromatography (GC) and nuclear magnetic resonance (NMR)(More)
Real-time monitoring of cardiac health is helpful for patients with cardiovascular disease. Many telemedicine systems based on ubiquitous computing and communication techniques have been proposed for monitoring the user's electrocardiogram (ECG) anywhere and anytime. Usually, wet electrodes are used in these telemedicine systems. However, wet electrodes(More)
In this paper, the monthly gross beta activities in aerosol during 1995-2004 at Daya Bay area are reported. The gross beta activities were observed to vary in the range of 0.22-5.14 mBq m(-3) with an arithmetic average of 1.60+/-1.00 mBq m(-3) and a geometric average about 1.78+/-0.33 mBq m(-3). It is shown an obvious seasonal variation characteristic,(More)
Traumatic brain injury (TBI) usually results from brain shaking or impact. It can affect the normal function of the brain and even cause people become disabled and death. However, there is lack of studies for the physiological changes of humans or animals under brain injury. In order to obtain the information of physiological state change, we designed and(More)
Compared with the original system that has unidirectional broadcasting characteristics, the interactive satellite remote education system which based on DTN greatly improved. However, in the special application environment of the satellite remote education system, the traditional Internet security mechanism can't meet the DTN security needs. In order to(More)
Electrocardiography (ECG) is a kind of electrical activities of the heart measured along the skin, and is also an important tool to diagnosis heart decease. In clinical, the conventional ECG electrode is generally used for measuring ECG signal. However, it requires skin preparation and conductive gels to reduce the impedance of the skin-electrode interface.(More)
In this paper, an estimation method of gross beta activity from radionuclide concentrations in river water based on decay data was presented by introducing a concept of gross beta conversion factor. With the factors, the gross beta activities of some downstream water intakes and the locations downstream 1 km away from a planning nuclear power plant in(More)
An analytical method for (14)C in environmental water based on a wet-oxidation process was developed. The method can be used to determine the activity concentrations of organic and inorganic (14)C in environmental water, or total (14)C, including in drinking water, surface water, rainwater and seawater. The wet-oxidation of the organic component allows the(More)
Online video search or stream live on social media has become tremendous widespread and speedy increased continuously in recent years. Most of the videos shared on social media are aimed at the more number of views from audiences. What and how many videos the users shared all around the world have created a great amount and varied videos and the other data(More)