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The basic working principle of single-ring absolute photoelectric shaft encoder is to use light-emitting diode as light source to illuminate the encoder, at the same time using linear CCD as photoelectric signal receiving device and subdivision device. So the essence of single ring absolute encoder subdivision technology is based on line array CCD subdivision technology. This paper proposes a linear...
Visualization is a research hotspot in Digital Earth. Available Digital Earth platforms, such as Google Earth and World Wind could only display the prebuilt tiles of geospatial data statically, due to inability to deal with massive geospatial data (especially the remotely sensed imagery) and to adapt for diversified configurations of visualization in real time. In this paper, we propose a complete...
First messengers and viral transfection are the two most common ways to stimulate cells for signal output, although their applications are limited. We investigated mechanisms of inducing neural stem cell differentiation using recombinant ephrin-B2/Fc and found that it acted as a ligand and inhibited endogenous ephrin-B2, which maintenance of the neural progenitor cell state, by direct interference...
The relationship of the 4 kinds of noise about the excavator as noise discharged out of diesel, noise exhausted through resistance muffler, noise radiation of the diesel and the noise in manipulator cell has been studied in this paper with the method of spectrum analysis after the according noise signal collected, and the conclusions have been obtained as follows: the noise signal discharged out of...
The spectrums of noise discharged out of excavator diesel, noise exhausted through resistance muffler, noise well radiation of the diesel and the noise in manipulator cell has been analyzed with the corresponding noise signal collected, and the A sound pressure levels have been measured with different diesel rotation respectively. Conclusions have been obtained as following: the noise signal discharged...
The method of ventilating system optimization for Roots Blower workshop has been studied according to the problem of bad ventilating effect with the transmitted medium of carbon monoxide in a chemical factory based on computational fluid dynamics (CFD). An optimized ventilating system has been designed and carried out as follows: the ventilating system is effective with the cooling air flowing in...
In this paper, acoustic performance of a complicated resistance muffler has been studied. A numerical model is established to reveal the filtering mechanism of the complicated muffler with the acoustic performance. Simulated result is compared with actual experiment signals to verify the validation of the model. The filter model is concern with the structure of the muffler. The filtering relation...
The noise attenuate of resistance muffler has been studied with the pressure signals of resource noise and the noise exhausted out of muffler with different diesel rotational velocity collected, and the acoustics performance of the double noise has been researched with the signal spectrum analysis. Corresponding conclusions have been obtained as following: the resource noise has similar spectrum performances...
As the technical basis of theory of sensor information computation, the sensor information computation environment is the premise of leading remote sensing spatial information to the area of application and services. Under the direction of sensor information computation theory, this paper proposes the architecture of SINCE. Afterward, the technical policy of computation based on pixel and objects...
Laser lift-off (LLO) technology is successfully used to prepare GaN-based TEM cross-sectional specimens. Detailed procedures of the method to prepare the specimens are demonstrated. Large thin areas suitable for TEM analysis were obtained. TEM images of the resulting GaN interface are studied, and the changes in structural quality are confined to approximately the first 250nm of the epilayer. Clear...
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