13 research outputs found
In-Vitro Anti-Fungal Activity and Phytochemical Screening of Stem Bark Extracts from Ventilago denticulata
The objective of the present study was to assess the antifungal activity of pet. Ether extract, acetone extract, ethyl acetate, and ethanol bark extract of Ventilago denticulata (VD).The material was dried in shade made to a coarse powder and weighted quantity of the powder (1000 g) was subjected to hot percolation in a soxhlet apparatus using petroleum ether, ethyl acetate, acetone and ethanol, at a temperature range of 40-800C. Phytochemical tests were done in presence of phytoconstituents like glycosides, alkaloids, tannins, steroids, flavonoids. The anti-fungal activity was carried out by using cup method using Sabraud’s agar as medium. Plates were incubated at 250C for 42hr and later observed for zones of inhibition. The effect of the extracts on fungal isolates was compared with Griseofluvin at a concentration of 10 mg/ml. The Ethyl acetate extract at low as well as high doses gives antifungal effect. Pet-ether extract, acetone extract and ethanolic extract did not produce any antifungal effect at both doses. Ethyl acetate extract shows zone of inhibition at low dose (T1 10 mg/ml) 10 mm and at high dose (T2 20 mg/ml) 16 mm.
Keyword: Ventilago denticulata, Anti- fungal, Griseofluvin
A multi-biometric iris recognition system based on a deep learning approach
YesMultimodal biometric systems have been widely
applied in many real-world applications due to its ability to
deal with a number of significant limitations of unimodal
biometric systems, including sensitivity to noise, population
coverage, intra-class variability, non-universality, and
vulnerability to spoofing. In this paper, an efficient and
real-time multimodal biometric system is proposed based
on building deep learning representations for images of
both the right and left irises of a person, and fusing the
results obtained using a ranking-level fusion method. The
trained deep learning system proposed is called IrisConvNet
whose architecture is based on a combination of Convolutional
Neural Network (CNN) and Softmax classifier to
extract discriminative features from the input image without
any domain knowledge where the input image represents
the localized iris region and then classify it into one of N
classes. In this work, a discriminative CNN training scheme
based on a combination of back-propagation algorithm and
mini-batch AdaGrad optimization method is proposed for
weights updating and learning rate adaptation, respectively.
In addition, other training strategies (e.g., dropout method,
data augmentation) are also proposed in order to evaluate
different CNN architectures. The performance of the proposed
system is tested on three public datasets collected
under different conditions: SDUMLA-HMT, CASIA-Iris-
V3 Interval and IITD iris databases. The results obtained
from the proposed system outperform other state-of-the-art
of approaches (e.g., Wavelet transform, Scattering transform,
Local Binary Pattern and PCA) by achieving a Rank-1 identification rate of 100% on all the employed databases
and a recognition time less than one second per person