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K. Yuvaraj,M. Sakthivel,M. Dhivakar Karthick,T. Pradeep,M. Veerapathran,S. Gowtham 한양대학교 청정에너지연구소 2024 Journal of Ceramic Processing Research Vol.25 No.2
An attempt was undertaken to elevate the efficacy of Engineered Cementitious Composites (ECC) mixes by inclusion ofsilica fume alongside mono fiber and hybrid fiber in this study. Totally, six mixes were prepared with low modulus and highmodulus fiber. The initial three mixtures consist of mono fiber engineered cementitious composites (MFECC), incorporatingPoly Vinyl Alcohol (PVA), Polypropylene (PP), and Glass fiber, each with a 2% volume fraction. The remaining three mixtureswere formulated as hybrid fiber engineered cementitious composites (HFECC), combining PVA (1%) and PP (1%), PP (1%)and Glass (1%), and lastly, PVA (1%) and Glass (1%). In addition, all six mixtures were consistently maintained with a fixedcomposition comprising 40% silica fume, 30% fly ash, 80% M-sand, a water-to-binder ratio of 0.35, and 1% superplasticizer. The findings suggest that within the examined compositions, MFECC reinforced with 2.0% PVA fiber and HFECC reinforcedwith 1% PVA fiber and 1% glass fiber exhibit more significant strength characteristics than other mixtures.
AUGMENTED INVERSE GRAPHS WITH RESPECT TO A GROUP
M. LAKSHMI KAMESWARI,N. NAGA MARUTHI KUMARI,T.V. PRADEEP KUMAR The Korean Society for Computational and Applied M 2023 Journal of applied mathematics & informatics Vol.41 No.2
In this paper, the Augmented graph Es(τ) of the inverse graph Gs(τ) of a cyclic group (τ,◦) was studied. The Augmented inverse graph was constructed by applying the method of Mycielski's construction. The dimension of Augmented inverse graph and different properties of the graph were investigated. Later the chromatic number of Augmented inverse graph was discussed and the relation between the maximum degree of the graph and the chromatic number was established. In the Mycielski's construction, the properties of the key node 'u' in Es (τ) were established based on cardinality of the cyclic group (τ,◦) and also proved that the Augmented inverse graph Es(τ) was a triangle free graph.
Vinayakprasanna N. Hegde,K.C. Praveen,T.M. Pradeep,N. Pushpa,John D. Cressler,Ambuj Tripathi,K. Asokan,A.P. Gnana Prakash 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.5
The total ionizing dose (TID) and non ionizing energy loss (NIEL) effects of 100 MeV phosphorous (P7þ)and 80 MeV nitrogen (N6þ) ions on 200 GHz silicon-germanium heterojunction bipolar transistors (SiGeHBTs) were examined in the total dose range from 1 to 100 Mrad(Si). The in-situ IeV characteristics likeGummel characteristics, excess base current (DIB), net oxide trapped charge (NOX), current gain (hFE),avalanche multiplication (M 1), neutral base recombination (NBR) and output characteristics (IC-VCE)were analysed before and after irradiation. The significant degradation in device parameters wasobserved after 100 MeV P7þ and 80 MeV N6þ ion irradiation. The 100 MeV P7þ ions create more damagein the SiGe HBT structure and in turn degrade the electrical characteristics of SiGe HBTs more whencompared to 80 MeV N6þ. The SiGe HBTs irradiated up to 100 Mrad of total dose were annealed from50 C to 400 C in different steps for 30 min duration in order to study the recovery of electrical characteristics. The recovery factors (RFs) are employed to analyse the contribution of room temperature andisochronal annealing in total recovery.