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Tripathy, Suman Kumar,De, Umasankar,Dehury, Niranjan,Pal, Satyanarayan,Kim, Hyung Sik,Patra, Srikanta The Royal Society of Chemistry 2014 Dalton Transactions Vol.43 No.39
<P>Phpy bridged homodinuclear Ru–Ru (<B>1</B>) and heterodinuclear Ir–Ru complexes (<B>2</B>) have been developed. Complex <B>2</B> induces autophagy towards the cisplatin resistant human breast cancer (MCF7) cell line, whereas <B>1</B> is inactive.</P> <P>Graphic Abstract</P><P>Heterodinuclear Ir–Ru (<B>2</B>) with polypyridyl based phpy ligand shows autophagy induced cell death, whereas homodinuclear Ru–Ru (<B>1</B>) is inactive. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4dt01033g'> </P>
Tripathy A.,Bhuyan Satyanarayan,Das S. N.,Choudhary R. N. P. 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.2
A double perovskite ceramic electronic sample of Bi2MnFeO6 has been formulated and synthesized using an ordinary solid-state sintering route from the metal oxides of bismuth, manganese, and iron. The crystallographic structure, morphological, dielectric, electrical, and current–voltage parameters have been analyzed for the fabricated sample. Room temperature XRD (X-ray diffraction) investigation confirms the monoclinic phase. The microstructure obtained from scanning electron microscope reveals compact grain structures with little or no voids. The impedance as well as its electrical properties have been appraised through the impedance analyzer (LCR meter) for a wide range of temperatures and frequencies (30–230 °C and 1 kHz–1 MHz). The negative temperature coefficient of the material is derived from the impedance analysis. The non-ohmic behavior of the sample was confirmed by the current versus voltage (V–I) characteristic of the sample. Most of the significant physical and chemical properties linked with this compound may be critical in the development of future peer group electrical and electronic devices.
On I-Convergent Double Sequences of Fuzzy Real Numbers
Tripathy, Binod Chandra,Sarma, Bipul Department of Mathematics 2012 Kyungpook mathematical journal Vol.52 No.2
In this article we introduce the class of I-convergent double sequences of fuzzy real numbers. We have studied different properties like solidness, symmetricity, monotone, sequence algebra etc. We prove that the class of I-convergent double sequences of fuzzy real numbers is a complete metric spaces.
Tripathy, Suman Kumar,De, Umasankar,Dehury, Niranjan,Laha, Paltan,Panda, Manas Kumar,Kim, Hyung Sik,Patra, Srikanta The Royal Society of Chemistry 2016 Dalton Transactions Vol.45 No.38
<P>Six mononuclear Ir complexes (1-6) using polypyridyl-pyrazine based ligands (L-1 and L-2) and {[cp*IrCl-(mu-Cl)](2) and [(ppy)(2)Ir(mu-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.</P>
Some Difference Double Sequence Spaces Defined By Orlicz Function
Tripathy, Binod Chandra,Choudhary, Bisweshwear,Sarma, Bipul Department of Mathematics 2008 Kyungpook mathematical journal Vol.48 No.4
In this article we introduce some difference sequence spaces defined by Orlicz function and study different properties of these spaces like completeness, solidity, symmetricity etc. We establish some inclusion results among them.
Effect of ZnO nanoparticles aggregation on the toxicity in RAW 264.7 murine macrophage
Tripathy, N.,Hong, T.K.,Ha, K.T.,Jeong, H.S.,Hahn, Y.B. Elsevier Scientific Pub. Co 2014 Journal of hazardous materials Vol.270 No.-
Nanostructured zinc oxide (ZnO) has received much attention due to its biological and medical applications, where detailed knowledge about particle sizing, aggregation propensity and its related hazards are crucial. Herein, the aggregation propensity and dissolution behavior of ZnO nanoparticles in aqueous medium (PBS) were studied as a function of concentration and further correlated with its toxicity in RAW 264.7 murine macrophages. Fast formation of smaller aggregates having high dissolution rate was observed at low concentration ZnO (LC-ZnO). Compared to high concentration ZnO (HC-ZnO) aggregates, the LC-ZnO aggregates were highly pronounced in terms of reactive oxygen species generation and exerting cell apoptosis, ascribed to the secondary size effect, size-dependent cellular uptake and ion solubility. This study outlines the nanoparticle concentration as a key factor in scaling its aggregation, dissolution tendency and also emphasizes the accounting of ingested nanomaterials long-term fate inside the cells.
I-Monotonic and I-Convergent Sequences
Tripathy, Binod Chandra,Hazarika, Bipan Department of Mathematics 2011 Kyungpook mathematical journal Vol.51 No.2
In this article we study the noton of I-monotonic sequences. We prove the decomposition theorem and generalize some of the results on monotonic sequences. We also introduce I-convergent series and studied some results.
On b-Locally Open Sets in Bitopological Spaces
Tripathy, Binod Chandra,Sarma, Diganta Jyoti Department of Mathematics 2011 Kyungpook mathematical journal Vol.51 No.4
In this article we introduce the notion of b-locally open sets, $bLO^*$ sets, $bLO^{**}$ sets in bitopological spaces and obtain several characterizations and some properties of these sets.
Tripathy, Binod Chandra,Borgohain, Stuti Department of Mathematics 2013 Kyungpook mathematical journal Vol.53 No.3
The sequence space $m(M,{\phi})^F$ of fuzzy real numbers is introduced. Some properties of this sequence space like solidness, symmetricity, convergence-free etc. are studied. We obtain some inclusion relations involving this sequence space.
Metal oxide modified ZnO nanomaterials for biosensor applications
Tripathy Nirmalya,Kim Deok-Ho 나노기술연구협의회 2018 Nano Convergence Vol.5 No.27
Advancing as a biosensing nanotechnology, nanohybrids present a new class of functional materials with high selectivity and sensitivity, enabling integration of nanoscale chemical/biological interactions with biomedical devices. The unique properties of ZnO combined with metal oxide nanostructures were recently demonstrated to be an efficient approach for sensor device fabrication with accurate, real-time and high-throughput biosensing, creating new avenues for diagnosis, disease management and therapeutics. This review article collates recent advances in the modified ZnO nanostructured metal oxide nanohybrids for efficient enzymatic and non-enzymatic biosensor applications. Furthermore, we also discussed future prospects for nanohybrid materials to yield high-performance biosensor devices.