PURPOSE To evaluate the effect of intrastromal corneal ring implantation on corneal curvature in rabbits. METHODS Thirty eyes of 15 rabbits were divided into two groups: group 1 with 7 animals and group 2 with 8 animals. The left eye underwent surgery and the right eye was used as control. Ultrasound pachymetry and corneal topography were performed prior to surgery. Anterior segment biomicros...

The mechanical construction method for a subway contact channel has the advantages of short period and high safety, is more being applied in coastal soft-soil areas. In order to explore suitability this inland areas, full-scale model test platform used simulate shield-cutting process channel. convergence deformation segments strain reinforcement concrete are tested, so as analyze internal force...

This work proposes the segment fault protection mechanism called Non-Overlap Segment Protection (NOSP) and Overlap Segment Protection (OSP) using the method of multiple-ring search in Wavelength Division Multiplexing (WDM) mesh networks. Multiple-ring search operates in distributed control, and gathers network information through neighboring nodes. Hence, the proposed methods can be adopted in ...

In the title compound, C(13)H(9)ClN(2)O(5)S, the N-C bond in the C-SO(2)-NH-C segment has a gauche torsion with respect to the S=O bonds. The conformation between the N-H bond and the ortho-nitro group in the sulfonyl benzene ring is syn, and that between the C=O and the meta-Cl atom in the benzoyl ring is anti. The mol-ecule is twisted at the S-N bond, with a torsion angle of 65.41 (38)°. The ...

in this note we introduce the notion of weak mccoy rings as a generalization of mccoy rings, and investigate their properties. also we show that, if is a semi-commutative ring, then is weak mccoy if and only if is weak mccoy.

The compound, C(15)H(16)N(2)O(2), features a pyrroline ring fused with a seven-membered diazepine ring; the latter system adopts a boat conformation (with the methine C atom as the prow and the two C atoms of the aromatic ring as the stern). A CH(2)-CH(2) segment of the pyrroline ring is disordered over two positions in a 1:1 ratio.

We present three cases of intracorneal pencil graphite particles following penetrating ocular injury. Slit lamp examination revealed pencil graphite particles in the corneal stroma in all cases. Although we did not remove the particles, no complications occurred during the follow-up period. We assumed that removal of the pencil graphite particles was unnecessary, and it was avoided to prevent t...