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The purpose of this work was to investigate the cardiovascular toxicity of different sizes and different dosages of silica nanoparticles in Wistar rats. The three silica nanoparticles (30, 60, and 90 nm) and one fine silica particles (600 nm) at three doses of 2, 5, and 10 (mg/Kg bw) were used in the present experiment. After intratracheal instillation for(More)
This study aimed to evaluate the acute toxicity of intravenously administrated amorphous silica nanoparticles (SNPs) in mice. The lethal dose, 50 (LD50), of intravenously administrated SNPs was calculated in mice using Dixon's up-and-down method (262.45±33.78 mg/kg). The acute toxicity was evaluated at 14 d after intravenous injection of SNPs at 29.5, 103.5(More)
The mechanisms behind the repairing effects of the cotransplantation of olfactory ensheathing cells (OECs) with bone marrow mesenchymal stromal cells (BMSCs) have not been fully understood. Therefore, we investigated the effects of the cotransplantation of OECs with BMSCs on antiapoptotic effects in adult rats for which the models of SCI are induced. We(More)
In many circumstances, the structural conflicts in workflow processes lead to malfunctioning of workflow management systems. So the conflicts should be detected and resolved before workflow processes are actually put into execution. Up to now, there is still no effective algorithm which can be able to detect out the structural conflicts both in the workflow(More)
To design a more secure and efficient single sign-on system, this paper analyzed the popular single sign-on systems and then introduced the original design model of SSO, due to the limitation of the original design model, we present the proposed design model named as PKI and password protected card-based single sign-on system (3PC-SSO), which combines the(More)
The nearest neighbor wouldn't be replaced by any other dataset while query point didn't cross over the border of the safe area. However, it is hard to work out the traditional safe area which is an irregular spatial region. In this paper, we designed spherical safe area to resolve the above-mentioned problem, and proved the procedure of calculation is(More)
People have benefited a lot from the fast development of the Internet, but at the same time, it also spreads harmful and erotic content widely. Compared with the past when the researchers concentrated on the mechanical filtering and text-based filtering, they have more focused on the researches of image-based filtering and fusion algorithm filtering now.(More)
The purpose of this paper is to combine the embedded GIS technology with GPS and PDA to develop a mobile line-inspection system,which can be used to inspect the lines for electric power transmission, mobile communications, petroleum and natural gas transmission,etc.The system can facilitate inspectors'work,improve inspection work more efficiency,and(More)
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