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Kaliraj, Lalitha,Ahn, Jong Chan,Rupa, Esrat Jahan,Abid, Suleman,Lu, Jing,Yang, Deok Chun Elsevier Sequoia 2019 Journal of photochemistry and photobiology Biology Vol.199 No.-
<P><B>Abstract</B></P> <P>Green synthesis of zinc oxide has gained extensive attention as a reliable, sustainable, and eco-friendly protocol to reduce the destructive effects associated with the traditional synthesis methods commonly utilized in laboratory and industry. Here for the first time, we have synthesized quaker ladies flower type ZnO (ZnO/QNF) from panos extract (extract from four panax plants such as <I>Panax ginseng</I>, <I>Acanthopanax senticosus</I>, <I>Kalopanax septemlobus</I> and Dendropanax morbifera). The synthesized ZnO materials was characterized using powder X-ray diffraction, Fourier infrared spectroscopy, X-ray photoelectron spectroscopy and Transmission electron microscope. The newly synthesized ZnO/QNF was applied for the removal of industrial dyes such as methylene blue (MB), Eosin Y (EY) and Malachite green (MG) under UV illumination. The photocatalyst degraded the 15 mg L<SUP>−1</SUP> MB, EY and MG to >99% within 80, 90 and 110 min of contact time, respectively. In addition, the ZnO/QNF photocatalyst removed the low concentrated 5 mg L<SUP>−1</SUP> of MB, EY, and MG within 30, 35 and 40 min of contact time, respectively. The pedal structure provided all the active sites available for the easy interaction with dye molecule under UV, and that enabled fast kinetics of dye degradation than the many other benchmark materials reported previously. The ZnO photocatalyst could be reused minimum of five cycles without any significant loss in degradation efficiency.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Panos extract mediated quaker ladies type ZnO nano flower (ZnO/QNF) was synthesized. </LI> <LI> ZnO/QNF was characterized using various analytical techniques. </LI> <LI> ZnO/QNF was applied as photocatalyst for industrial dye degradation under UV. </LI> <LI> ZnO/QNF was reused at least five times without much lose in degradation efficiency. </LI> </UL> </P> <P><B>Graphical Abstract</B></P> <P>[DISPLAY OMISSION]</P>
ON HARMONIOUS COLORINGS OF LEXICOGRAPHIC PRODUCT OF GRAPHS
K. KALIRAJ,M. MANJULA,VERNOLD VIVIN,Ismail Naci CANGUL 장전수학회 2021 Advanced Studies in Contemporary Mathematics Vol.31 No.2
Harmonious coloring was rst introduced by Harary and Plantholt in 1982. A harmonious coloring is a proper vertex coloring in which every pair of colors appears on at most one pair of adjacent vertices. The harmonious chromatic number χH(G) of a graph G is the minimum number of colors needed for any harmonious coloring of G. In this paper, we obtain the harmonious chromatic number of lexicographic product of two graphs G and H, denoted by G[H]. Path and complete graphs are used to obtain extremal properties of graphs and to obtain upper and lower bounds for some graph parameters. Here, we rst consider the graph G[H] where G is the complete graph and H is any simple graph such as the path graph, cycle graph, wheel graph, complete graph, star graph, fan graph or complete bipartite graph. Secondly, we consider G as the path graph and H as the complete graph or path graph respectively. Finally, we consider G as the wheel graph and H as the complete graph.
판오스 추출물을 이용한 산화 아연 나노파티클의 생합성과 산업용 염료 분해 촉매 활성 및 항균 효과
Lalitha Kaliraj,Gokulanathan Anandapadmanaban,Ramya Mathiyalagan,Esrat Jahan Rupa,Veronika Soshinikova,안종찬,양동욱,Zuly Elizabeth Jimenez Perez,Josua Markus,양덕춘 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.10
Background : Panos extract is a mixture of four Panax plant extracts namely Dendropanax morbifera, Panax ginseng, Acanthopanax senticosus and Kalopanax septemlobus. We intended to use Panos extract for ZnO nanoparticles(NPs) synthesis and application for waste water treatment. Methods and Results : In the present study, we have synthesized Panos ZnO nanoparticles via co precipitation method. Characterization of the NPs has been done using X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR) and UV-Visible spectroscopy. An average of 75% efficacy in degrading the methylene blue dye has been observed. The nanoparticles showed antibacterial activity against E. coli and S. aureus. Conclusion : The results shows that Panos ZnO NPs can be a potential eco-friendly and economical tool for waste water management in the current scenario where there an intense urge to remediate the polluted environment through novel approaches such as Nanobiotechnology.
Ruttala, Hima Bindu,Chitrapriya, Natarajan,Kaliraj, Kaliappan,Ramasamy, Thiruganesh,Shin, Woo Hyun,Jeong, Jee-Heon,Kim, Jae Ryong,Ku, Sae Kwang,Choi, Han-Gon,Yong, Chul Soon,Kim, Jong Oh Elsevier Science B.V. Amsterdam 2017 ACTA BIOMATERIALIA Vol. No.
<P><B>Abstract</B></P> <P>In this study, we developed pH and redox-responsive crosslinked polypeptide-based combination micelles for enhanced chemotherapeutic efficacy and minimized side effects. The stability and drug release properties of the polypeptide micelles were efficiency balanced by the corona-crosslinking of the triblock copolymer, poly(ethylene glycol)-<I>b</I>-poly(aspartic acid)-<I>b</I>-poly(tyrosine) (PEG-<I>b</I>-pAsp-<I>b</I>-pTyr) with coordinated redox and pH dual-sensitivity by introducing disulfide crosslinkages. Because of the crosslinking of the middle shell of the triblock polypeptide micelles, their robust structure was maintained in strong destabilization conditions and exhibited excellent stability. GSH concentrations were significantly higher in tumor tissue than in normal tissue, which formed the basis for our design. Drug release was elevated under redox and low acidic conditions. Furthermore, crosslinked micelles showed a superior anticancer effect compared to that of non-crosslinked micelles. Incorporation of docetaxel (DTX) and lonidamine (LND) in crosslinked polypeptide micelles increased the intracellular reactive oxygen species (ROS) level and oxidative stress and caused damage to intracellular components that resulted in greater apoptosis of cancer cells than when DTX or LND was used alone. The combination of DTX and LND in crosslinked micelles exhibited efficacious inhibition of tumor growth with an excellent safety profile compared to that reported for drug cocktail combinations and non-crosslinked micelles. Overall, redox/pH-responsive polypeptide micelles could be an interesting platform for efficient chemotherapy.</P> <P><B>Statement of Significance</B></P> <P>We have synthesized a biodegradable polypeptide block copolymer to construct a facile pH and redox-responsive polymeric micelle asan advanced therapeutic system for cancer therapy. We have designed a corona-crosslinked triblock copolymer (poly (ethylene glycol)-<I>b</I>-poly(aspartic acid)-<I>b</I>-poly(tyrosine) (PEG-<I>b</I>-pAsp-<I>b</I>-pTyr)) micelles co-loaded with docetaxel and lonidamine (cl-M/DL). The corona of triblock polymer was crosslinked to maintain its structural integrity in the physiological environment. The mitochondrial targeting LND is expected to generate ROS, oxidative stress and thereby synergize the chemotherapeutic efficacy of DTX in killing cancer cells. Consistently, cl-M/DL exhibited excellent antitumor efficacy in xenograft tumor model with remarkable tumor regression. Overall, we demonstrated the construction of bioreducible nanosystem for the effective synergistic delivery of DTX/LND in tumor tissues towards cancer treatment.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>