Pregnane glycosides from the leaves of and their α-glucosidase and α-amylase inhibitory activities.

Three new pregnane glycosides, drevoluosides O-Q (-) along with five known volubiloside C (), dreageoside A11 (), 17-marsdenin (), stavaroside H (), and hoyacarnoside G () were isolated from the methanol extract of the leaves. Their structures were elucidated by chemical and spectroscopic methods. Compounds - showed significant anti -glucosidase activity with the inhibitory percentages ranging from 32.

Feasible Self-Calibration of Larger Field-of-View (FOV) Camera Sensors for the Advanced Driver-Assistance System (ADAS).

This paper proposes a self-calibration method that can be applied for multiple larger field-of-view (FOV) camera models on an advanced driver-assistance system (ADAS). Firstly, the proposed method performs a series of pre-processing steps such as edge detection, length thresholding, and edge grouping for the segregation of robust line candidates from the pool of initial distortion line segments. A novel straightness cost constraint with a cross-entropy loss was imposed on the selected line candidates, thereby exploiting that novel loss to optimize the lens-distortion parameters using the Levenberg-Marquardt (LM) optimization approach.

fPADnet: Small and Efficient Convolutional Neural Network for Presentation Attack Detection.

The rapid growth of fingerprint authentication-based applications makes presentation attack detection, which is the detection of fake fingerprints, become a crucial problem. There have been numerous attempts to deal with this problem; however, the existing algorithms have a significant trade-off between accuracy and computational complexity. This paper proposes a presentation attack detection method using Convolutional Neural Networks (CNN), named fPADnet (fingerprint Presentation Attack Detection network), which consists of Fire and Gram- modules.

Novel Hydroxamic Acids Incorporating 1-((1H-1,2,3-Triazol-4-yl)methyl)- 3-substituted-2-oxoindolines: Synthesis, Biological Evaluation and SAR Analysis.

Background: Histone deacetylases (HDAC) enzymes are emerging as potential targets for cancer treatments. In this study, several series of novel hydroxamic acids incorporating 1-((1H- 1,2,3-triazol-4-yl)methyl)-3-substituted-2-oxoindolines were explored.

Methods: The compounds were designed using Autodock Vina program, then synthesized and evaluated in vitro and in silico for their inhibitory activity against HDACs.