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Wireless communication systems and Ethernet networks call for moderate-resolution GS/s energy-efficient ADCs. While previous work [1] shows that the multi-bit per cycle SAR ADC can achieve low power due to various hardware reduction techniques, there are still a few limitations that restrain this architecture. First, the pre-charge slows down the logic and the DAC settling, especially during the MSB...
A Si-Glass based MEMS piezoresistive pressure sensor is designed for harsh environment applications, such as vibration, shock and environment conditions with humidity, alkalescence or acidity, electrostatic particles and so on. The sensor chips were fabricated using SOI wafer-glass anodic bonding technology, which enables a single boron-implanted piezoresistor to be on lower surface of silicon diaphragm...
Accurate recognition of burning state is critical in sintering process control of rotary kiln. Recently, flame image-based burning state recognition has received much attention. However, most of the existing methods demand accurate image segmentation, which is quite challenging due to poor image quality caused by smoke and dust inside the kiln. In this study, we develop a more reliable method for...
Monitoring indoor environmental state of large communication rooms, warehouses and power stations is an important task. Based on mobile robotics, we have developed an intelligent environmental monitoring system. In this system, a mobile robot carrying a number of sensors autonomously navigates and dynamically sample the environmental data including the temperature, humidity and airflow velocity. The...
Up and Down-converters are the very important equipments in the Two Way Satellite Time and Frequency Transfer (TWSTFT). Up-converter is the transmit equipment while the Down-converter belong to receive facility. They take the role of changing from middle frequency signal (70MHz) to high frequency (up link is 14GHz, down link is 12GHz). In order to improve the time transfer precise, we measure and...
Artemisinin is difficult to formulate for parenteral administration because of its low aqueous solubility and Cremophor EL, the excipient used for its formulation, has been shown to cause serious side effects. This study reports the preparation method and properties of artemisinin lipid emulsion for parenteral administration. High-pressure homogenization was used to prepare artemisinin lipid emulsion...
As a functional material of the enhanced cooling, porous matrix has been widely used in the environments concerned with very high temperature. Through the pores of the porous matrix, the flowing coolant absorbs and takes away the heat inside the matrix to achieve the thermal protection of high temperature structures. In the past investigations on the permeability of porous materials, experiments and...
With the development of IR technology, there are increasing needs for surface BB. A novel surface blackbody (BB) with honeycombs for calibrating infrared (IR) imaging ranging 240~450K in the long IR wavelength bands of 3~15μm is developed and its features are experimental tested. Traditional radiant source of BB cavities are often with simple axisymmetrical structure, such as cylinder, cone, cylinder-cone,...
The extra or intracellular ice crystal during the freezing of biomaterials is lethal to cells. It is an important topic in cryobiology how to control, reduce, or even eliminate the ice formation. The purpose of this study is to testify an assumption that electric field could significantly influence ice formation and induce the structure of microcrystal or glassy ice in some samples at a relative slow...
Recognition of burning states is a critical issue in sintering process control of rotary kiln, and the recognition is usually based on the temperatures of burning zone. Recently, flame image-based burning states recognition has received much attention. However, most of the methods reported involve image segmentation, which is a very challenging problem due to the poor quality of flame images of rotary...
Aviation industry has a serious problem with ice, which forms on the aircraft that could endanger the crew and vehicle. To solve this problem, fiber-optic technology is employed to present a novel ice detection and measurement system. Comparing with existing ice detection system, this system does not require the measurement of ambient air temperature and liquid water content to determine icing condition...
Ultrasonic computed tomography (UCT) is used for noninvasive temperature measurement in hyperthermia in human body. A model for temperature measurement has been established, and an UCT algorithm for the model has been developed. The authors also analyze the resolution and the time requirements of the measurement, and a method of sparse reconstruction to measure the distribution of sound speed and...
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