Computed Tomography Beam Hardening Correction Based on Non-linear Segmentation

Abstract

The RecA protein has an essential role in DNA recombination and repair which is mediated by its ability to bind ATP/ADP. SWISS-MODEL, an online automated server, was used to predict its tertiary structure of C. jejuni RecA. Four evaluation tools were used for quality assessment of the constructed model: QMEAN6, ERRAT, ANOLEA and PROCHECK. Quality assessments indicated that the model was of high quality and reliable for docking experiments. A total of forty natural products were used in docking the model by Hex 8.0.0 and ArgusLab 4.0.1 using ADP as control. Ten compounds had docking scores higher than that of ADP in ArgusLab 4.0.1 where quercetin had the highest docking score of -10.34 Kcal/mol. In Hex 8.0.0 docking, only cucurmin, taxifolin, isoquercitrin and vitexin had docking scores higher than that of ADP. These natural occurring compounds may be possible inhibitors of ATPase activity and, therefore, may be further analyzed to develop new antimicrobials targeting RecA in pathogenic bacteria.

[Retracted] Emergency Project Management Decision Support Algorithm for Network Public Opinion Emergencies Based on Time Series

“…e Internet has become an integral component of the majority of people's daily life. Such a platform enables the free expression of attitudes and opinions regarding a particular social phenomenon or issue, forming the network of public opinion by mapping social public opinion in the Internet space, which is a direct mirror of social public opinion [2]. When certain emergencies occur in real society, the rapid spread of these events through the Internet will quickly become a hot topic on the Internet.…”

Reconstruction Algorithm for Polychromatic Computed Tomography Images Based on Equivalent Tissue Length

“…Now, using (4), we calculated the Lb×Lb, Lw×Lb, and Lw×Lw terms, denoted as 2 , Lwb, and 2 , respectively. Zhang et al [17] obtained artifact-free images by removing the 2 error terms. Accordingly, we modified the polychromatic projection model to:…”

“…In our previous work [17], we presented an algorithm based on the mathematical perspective of constructing a projection correction model using the projection data as the independent variable. This method is suitable for hardening artifact correction with a single homogeneous material or a combination of two such materials.…”