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Wound closure after endoscopic submucosal dissection of the colon using a novel detachable traction device: a rubber ring with a figure-of-eight sliding knot. [PDF]
EndoscopyWang J +6 more
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Chord transfer and leaflet management for Barlow's valve repair. [PDF]
Ann Cardiothorac SurgMcCarthy PM.
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Cyclic Polymers by Ring‐Closure Strategies
Angewandte Chemie International Edition, 2016AbstractThe preparation of cyclic macromolecules has always represented a challenging task for polymer science, mainly because of difficulties in connecting chain extremities together. Initiated by the pioneering studies of Jacobson and Stockmayer, preparative pathways to cyclic polymers have been considerably improved within the last two decades ...
Thomas, Josse +3 more
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Current Organic Chemistry, 2015
We consider generalization of the terminal matrix of Zaretsky, in which only distances are listed between terminal vertices of acyclic graphs, to a condensed matrix for cyclic and polycyclic systems. Some 50 years ago Zaretsky has proved that the distance matrix between terminal vertices of acyclic graphs ...
Randić, Milan +2 more
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We consider generalization of the terminal matrix of Zaretsky, in which only distances are listed between terminal vertices of acyclic graphs, to a condensed matrix for cyclic and polycyclic systems. Some 50 years ago Zaretsky has proved that the distance matrix between terminal vertices of acyclic graphs ...
Randić, Milan +2 more
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Journal of the Chemical Society, Chemical Communications, 1976
The ease of formation of cyclic structures shows some regularity which can be described by a set of 'rules' for ring closure. The restrictions on the endocyclic transfer of groups due to SN2 displacements having linear transition states are exemplified by studied on a biogenetic type synthesis of penicillin and, more generally, on the endocyclic attack
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The ease of formation of cyclic structures shows some regularity which can be described by a set of 'rules' for ring closure. The restrictions on the endocyclic transfer of groups due to SN2 displacements having linear transition states are exemplified by studied on a biogenetic type synthesis of penicillin and, more generally, on the endocyclic attack
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International Journal of Mathematics, 2001
We study the operation E → cl (E) defined on subsets E of a unital ring R, where x ∈ cl (E) if (x + Rb) ∩ E ≠ ∅ for each b in R such that Rx + Rb = R. This operation, which strongly resembles a closure, originates in algebraic K-theory. For any left ideal L we show that cl (L) equals the intersection of the maximal left ideals of R containing L ...
Ara, P. +2 more
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We study the operation E → cl (E) defined on subsets E of a unital ring R, where x ∈ cl (E) if (x + Rb) ∩ E ≠ ∅ for each b in R such that Rx + Rb = R. This operation, which strongly resembles a closure, originates in algebraic K-theory. For any left ideal L we show that cl (L) equals the intersection of the maximal left ideals of R containing L ...
Ara, P. +2 more
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Ring Closure of Carbon Nanotubes
Science, 2001Lightly etched single-walled carbon nanotubes are chemically reacted to form rings. The rings appear to be fully closed as opposed to open coils, as ring-opening reactions did not change the structure of the observed rings. The average diameter of the rings was 540 nanometers with a narrow size distribution.
M, Sano +3 more
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Flux Closure Structures in Cobalt Rings
Physical Review Letters, 2001Physical Review ...
Li SP +7 more
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