Indian Institute of Technology Bhubaneswar

About: Indian Institute of Technology Bhubaneswar is a education organization based out in Bhubaneswar, India. It is known for research contribution in the topics: Large Hadron Collider & Higgs boson. The organization has 1185 authors who have published 3132 publications receiving 48832 citations.

Magnetoelectric coupling in the Haldane spin-chain system Dy 2 BaNiO 5

Abstract: We report the results of various measurements, namely magnetization, complex dielectric permittivity, and electric polarization ($P$), on Dy${}_{2}$BaNiO${}_{5}$ as a function of temperature ($T$) and magnetic field ($H$), apart from heat capacity ($C$), with the primary motivation of exploring the existence of magnetoelectric (ME) coupling among Haldane spin-chain systems The $M$($T$) and $C$($T$) data establish long-range magnetic ordering at 58 K The most noteworthy observations are: (i) Distinct anomalies are observed in the dielectric constant (\ensuremath{\epsilon}\ensuremath{'}) vs $T$ and loss (tan\ensuremath{\delta}) vs $T$ at different temperatures (ie, 125, 30, 50, and 58 K); at low temperatures, three magnetic-field-induced transitions are observed in \ensuremath{\epsilon}\ensuremath{'} vs $H$ at 6, 40, and 60 kOe These transition temperatures and critical magnetic fields track those obtained from magnetization data, establishing the existence of strong magnetoelectric coupling in this compound (ii) Correspondingly, electric polarization could be observed as a function of $T$ and $H$ in the magnetically ordered state, thereby indicating magnetism-induced ferroelectricity in this compound; this result suggests that this compound is a possible multiferroic material among spin $=$1 (nickel-containing) compounds, with successive magnetic transitions and strong magnetoelectric coupling

Cyclometallated iridium complexes inducing paraptotic cell death like natural products: synthesis, structure and mechanistic aspects.

Abstract: Six mononuclear Ir complexes (1–6) using polypyridyl-pyrazine based ligands (L1 and L2) and {[cp*IrCl(μ-Cl)]2 and [(ppy)2Ir(μ-Cl)]2} precursors have been synthesised and characterised. Complexes 1–5 have shown potent anticancer activity against various human cancer cell lines (MCF-7, LNCap, Ishikawa, DU145, PC3 and SKOV3) while complex 6 is found to be inactive. Flow cytometry studies have established that cellular accumulation of the complexes lies in the order 2 > 1 > 5 > 4 > 3 > 6 which is in accordance with their observed cytotoxicity. No changes in the expression of the proteins like PARP, caspase 9 and beclin-1, Atg12 discard apoptosis and autophagy, respectively. Overexpression of CHOP, activation of MAPKs (P38, JNK, and ERK) and massive cytoplasmic vacuolisation collectively suggest a paraptotic mode of cell death induced by proteasomal dysfunction as well as endoplasmic reticulum and mitochondrial stress. An intimate relationship between p53, ROS production and extent of cell death has also been established using p53 wild, null and mutant type cancer cells.

Anomaly Detection in Road Traffic Using Visual Surveillance: A Survey

Abstract: Computer vision has evolved in the last decade as a key technology for numerous applications replacing human supervision. In this paper, we present a survey on relevant visual surveillance related researches for anomaly detection in public places, focusing primarily on roads. Firstly, we revisit the surveys done in the last 10 years in this field. Since the underlying building block of a typical anomaly detection is learning, we emphasize more on learning methods applied on video scenes. We then summarize the important contributions made during last six years on anomaly detection primarily focusing on features, underlying techniques, applied scenarios and types of anomalies using single static camera. Finally, we discuss the challenges in the computer vision related anomaly detection techniques and some of the important future possibilities.