National Institute of Technology, Silchar

About: National Institute of Technology, Silchar is a education organization based out in Silchar, Assam, India. It is known for research contribution in the topics: Control theory & Electric power system. The organization has 1934 authors who have published 4219 publications receiving 41149 citations. The organization is also known as: NIT Silchar.

Co-pyrolysis of rice straw and water hyacinth: Characterization of products, yields and biomass interaction effect

Abstract: Co-pyrolysis of biomass with abundantly available materials could be an economical method for production of bio-fuels. Pyrolysis behavior of rice straw (RS) and water hyacinth (WH) were carried out in fixed bed reactor at temperature ranging from 300 to 450 °C at a heating rate of 20 °C/min. Co-pyrolysis of biomass with different reaction mixture were carried out at optimum condition 400 °C. The maximum liquid product yields for the pyrolysis of RS and WH obtained were 28.2 wt% and 24.7 wt%, respectively, whereas the maximum liquid product yield for RS+WH co-pyrolysis was 44.4 wt% at 400 °C with 5: 5 biomass mixture ratio. The bio-oils obtained from pyrolysis and co-pyrolysis was analyzed by using GC-MS, FT-IR, 1H NMR. The results of GC-MS and FT-IR analysis confirmed the interaction between RS and water hyacinth during co-pyrolysis, which resulted into increases the number of compounds and compound selectivity. The intensity of the peak enhanced at 1633 cm−1 in the case of bio-char due to an increase in the amount of aromatic carbon and decreased cellulose and hemicellulose contents in the biomass. This work aimed to summarize research progress on co-pyrolysis as well as their benefits on enhancement of bio-oils derived from biomass.

Geometric transformation invariant block based copy-move forgery detection using fast and efficient hybrid local features

Abstract: Copy-move forgery in images is a popular tampering method, in which a portion of an image is copied and pasted on some other location of the same image. This paper proposes an enhancement of block based copy-move forgery detection using hybrid local features extraction. In this system, the image is divided into non-overlapping blocks and SURF features are computed from each block. SURF features are matched using 2NN procedure and large blocks are formed by considering the eight neighboring blocks of each SURF features match block. Maximally Stable Extremal Regions are detected from each large region and the extracted SURF descriptors from these regions are compared for matching. Finally, affine transform is applied to remove the outliers. The proposed system is experimented using MICC-F220, MICC-F2000 and MICC-F600 benchmark datasets and it yields better performance in comparison with state of the art techniques.

GOA optimised frequency control of solar-thermal/sea-wave/biodiesel generator based interconnected hybrid microgrids with DC link

Abstract: This work presents an independent interconnected hybrid microgrid system that consists of sea wave generator, biodiesel generator, and battery energy storage system in microgrid 1 whereas, organic ...

Five new 4-D autonomous conservative chaotic systems with various type of non-hyperbolic and lines of equilibria

Abstract: Very little research is available in the field of 4-D autonomous conservative chaotic systems. This paper presents five new 4-D autonomous conservative chaotic systems having non-hyperbolic equilibria with various characteristics. The proposed systems have different numbers of non-hyperbolic equilibrium points. One of the new systems has four non-hyperbolic equilibria points along with lines of equilibria. Hence, this system may belong to the category of hidden attractors chaotic system. The first, second, fourth and fifth type of the systems exhibit coexistence of chaotic flow, whereas the third type of the system exhibits coexistence of chaotic flows with quasi-periodic behaviour. The chaotic behaviours of the proposed systems are verified by using phase portrait plot, Poincare map, local Lyapunov spectrum, bifurcation diagram and frequency spectrum plots. The conservative nature of the proposed systems is proved by finding the sum of finite-time local Lyapunov exponents, finite-time local Lyapunov dimensions and divergence of the vector field. The sum of the finite-time local Lyapunov exponents and divergence of the vector field are equal to zero, and local Lyapunov dimension is equal to the order of the system confirm the conservative nature of the new chaotic systems.