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Search for "reactive oxygen species" in Full Text gives 131 result(s) in Beilstein Journal of Nanotechnology.

Antimicrobial properties of CuO nanorods and multi-armed nanoparticles against B. anthracis vegetative cells and endospores

  • Pratibha Pandey,
  • Merwyn S. Packiyaraj,
  • Himangini Nigam,
  • Gauri S. Agarwal,
  • Beer Singh and
  • Manoj K. Patra

Beilstein J. Nanotechnol. 2014, 5, 789–800, doi:10.3762/bjnano.5.91

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  • less prominence of a slime like layer in treated cells compared to the control cells. Recently Yang Li et al. have established that CuO NPs do not produce reactive oxygen species (ROS) even after 48 h of irradiation with UV light. Therefore, photocytotoxicity plays no role in the strong bactericidal
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Published 05 Jun 2014

Mesoporous cerium oxide nanospheres for the visible-light driven photocatalytic degradation of dyes

  • Subas K. Muduli,
  • Songling Wang,
  • Shi Chen,
  • Chin Fan Ng,
  • Cheng Hon Alfred Huan,
  • Tze Chien Sum and
  • Han Sen Soo

Beilstein J. Nanotechnol. 2014, 5, 517–523, doi:10.3762/bjnano.5.60

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  • effective chemical methods is an acute problem that has been tackled by advanced oxidation processes [1]. The photocatalytic production of reactive oxygen species by using semiconductor technology has emerged as a sustainable and promising route for such advanced oxidation processes [2][3][4][5][6]. In
  • ambient conditions and react with water and air to form reactive oxygen species such as •OH, •OOH, H2O2, and O2− for example [1][2][4][5][6]. These reactive oxygen species can subsequently decompose organic pollutants. Recent developments in nanotechnology have enhanced the performance of photocatalytic
  • the course of the 6 h irradiation (see Supporting Information File 1). These included N-hydroxylated desethyl rhodamine B, phthalic acid, and even ring-opened products [6]. The composition of the degradation products alludes to oxidative decomposition by reactive oxygen species, such as hydroxyl
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Letter
Published 24 Apr 2014

Near-infrared dye loaded polymeric nanoparticles for cancer imaging and therapy and cellular response after laser-induced heating

  • Tingjun Lei,
  • Alicia Fernandez-Fernandez,
  • Romila Manchanda,
  • Yen-Chih Huang and
  • Anthony J. McGoron

Beilstein J. Nanotechnol. 2014, 5, 313–322, doi:10.3762/bjnano.5.35

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  • : We explored cellular response after rapid, short-term and low thermal dose laser-IR820-PGMD NPs (laser/NPs) induced-heating, and compared it to slow, long-term and high thermal dose heating by a cell incubator. The expression levels of the reactive oxygen species (ROS), HIF-1 and VEGF following the
  • ]. Given the importance of HIF-1, studies of the effect of HT on this protein are very relevant for therapeutic HT applications in cancer. Goyal et al. and Chandel et al. reported that elevated reactive oxygen species (ROS) levels in cells stabilize HIF-1 expression [18][19]. On the other hand, ROS was
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Published 18 Mar 2014

Cytotoxic and proinflammatory effects of PVP-coated silver nanoparticles after intratracheal instillation in rats

  • Nadine Haberl,
  • Stephanie Hirn,
  • Alexander Wenk,
  • Jörg Diendorf,
  • Matthias Epple,
  • Blair D. Johnston,
  • Fritz Krombach,
  • Wolfgang G. Kreyling and
  • Carsten Schleh

Beilstein J. Nanotechnol. 2013, 4, 933–940, doi:10.3762/bjnano.4.105

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  • oxygen species (ROS) in human lung fibroblasts in a dose-dependent manner [19]. In contrast, very little is known about the cytotoxic and proinflammatory effects of AgNP in the respiratory system in vivo [20]. Intratracheal instillation of slightly agglomerated AgNP in mice resulted in progressively
  • -dependent decrease in cell viability. In addition, a proinflammatory response was shown by increased levels of tumor necrosis factor-α (TNF-α), macrophage inflammatory protein-2 (MIP-2), and interleukin-1β (IL-1β) [18]. Furthermore, AgNP caused damage to mitochondria and an increased production of reactive
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Published 19 Dec 2013

Synthesis of indium oxi-sulfide films by atomic layer deposition: The essential role of plasma enhancement

  • Cathy Bugot,
  • Nathanaëlle Schneider,
  • Daniel Lincot and
  • Frédérique Donsanti

Beilstein J. Nanotechnol. 2013, 4, 750–757, doi:10.3762/bjnano.4.85

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  • scheme of the assumed substitution mechanism at the surface. The following exchange reactions can explain the substitution of S atoms by reactive oxygen species generated in the plasma. Indeed, their free standard enthalpies all have negative values: Thus, when comparing these reactions with the reaction
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Published 13 Nov 2013

Catalytic activity of nanostructured Au: Scale effects versus bimetallic/bifunctional effects in low-temperature CO oxidation on nanoporous Au

  • Lu-Cun Wang,
  • Yi Zhong,
  • Haijun Jin,
  • Daniel Widmann,
  • Jörg Weissmüller and
  • R. Jürgen Behm

Beilstein J. Nanotechnol. 2013, 4, 111–128, doi:10.3762/bjnano.4.13

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Published 19 Feb 2013
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