نتایج جستجو برای: fullerenes

تعداد نتایج: 3608  

Journal: :Journal of immunology 2007
John J Ryan Henry R Bateman Alex Stover Greg Gomez Sarah K Norton Wei Zhao Lawrence B Schwartz Robert Lenk Christopher L Kepley

Fullerenes are a class of novel carbon allotropes that may have practical applications in biotechnology and medicine. Human mast cells (MC) and peripheral blood basophils are critical cells involved in the initiation and propagation of several inflammatory conditions, mainly type I hypersensitivity. We report an unanticipated role of fullerenes as a negative regulator of allergic mediator relea...

Journal: :European Journal of Combinatorics 2012

Journal: :Nano letters 2012
Nichole Cates Miller Sean Sweetnam Eric T Hoke Roman Gysel Chad E Miller Jonathan A Bartelt Xinxin Xie Michael F Toney Michael D McGehee

We compare the solar cell performance of several polymers with the conventional electron acceptor phenyl-C61-butyric acid methyl ester (PCBM) to fullerenes with one to three indene adducts. We find that the multiadduct fullerenes with lower electron affinity improve the efficiency of the solar cells only when they do not intercalate between the polymer side chains. When they intercalate between...

Journal: :Journal of Chemical Information and Computer Sciences 1996
Thierry Laidboeur Daniel Cabrol-Bass Ovidiu Ivanciuc

A new general molecular coding Prolog program is used in theoretical studies of the properties of fullerene isomers and derivatives to identify the topological equivalence classes of atoms and bonds in C20-C60 fullerenes. The symmetry perception algorithm is based on an exhaustive search of a minimal code. During this search all canonical labeled mapping trees are generated, allowing constructi...

2006
Věra HAMPLOVÁ

Fullerenes have been so far identified in a few rock types with unique geological history. One group of these finds is related to impacts of extraterrestrial bodies on Earth surface, strictly speaking the impact structure of Sudbury (Becker et al., 1994) and to events recorded from Permian/Triassic (Becker et al., 2001) and Cretaceous/Tertiary boundaries (Heymann et al., 1994). Generally two ba...

Journal: :Experimental oncology 2004
Anatolij P Burlaka Yevgeniy P Sidorik Svitlana V Prylutska Olga P Matyshevska Olexandr A Golub Yurij I Prylutskyy Peter Scharff

AIM To study the ability of fullerenes C(60) to catalyse the reactions of generation of reactive oxygen species (ROS) in water solution after photoexcitation and to affect the vitality of tumor cells in vitro. METHODS The number and vitality of cultured Ehrlich carcinoma cells or rat thymocytes were determined using tripane blue, ROS levels were registered using the methods of electron parama...

2017
Grace Watson

In a world where the scale of technology is continuously shrinking, from phones to cars to solar panels, nanotechnology is seeing a rise in applications. Recently, increased use of nanotechnology in the medical industry brought fullerenes, sometimes referred to as Buckyballs, to the forefront. Fullerenes are currently being developed by engineers to encapsulate a chemotherapeutic drug and deliv...

2001
Jack E. Graver

This paper is devoted to developing the structure of fullerene signatures. These structure results are then used to construct a complete catalog of fullerenes with ten or more symmetries. These fullerenes fall into 112 families. The Coxeter fullerenes, obtained by subdividing the faces of the icosahedron, form the prototype family. Like the Coxeter families, each family in the catalog is a one,...

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