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GENUS TWO SMALE–WILLIAMS SOLENOID ATTRACTORS IN 3-MANIFOLDS
Using alternating Heegaard diagrams, we construct some 3-manifolds which admit diffeomorphisms such that the non-wandering sets of the diffeomorphisms are composed of Smale–Williams solenoid… Expand
A Lower Bound on Unknotting Number*
In this paper the authors use a modified Wirtinger presentation to give a lower bound on the unknotting number of a knot in S3.
Homology-genericity, horizontal Dehn surgeries and ubiquity of rational homology 3-spheres
- J. Ma
- 1 November 2012
In this paper, we show that rational homology 3-spheres are ubiquitous from the viewpoint of Heegaard splitting. Let M = H+ ∪F H− be a genus g Heegaard splitting of a closed 3-manifold and c be a… Expand
Orientable hyperbolic 4-manifolds over the 120-cell.
Since there is no hyperbolic Dehn filling theorem in higher dimensions, it is difficult to construct concrete hyperbolic manifolds of small volume in dimension at least four. We build up a census of… Expand
Geometrically bounding 3-manifold, volume and Betti number.
It is well known that an arbitrary closed orientable $3$-manifold can be realized as the unique boundary of a compact orientable $4$-manifold, that is, any closed orientable $3$-manifold is cobordant… Expand
Reaction Mechanisms in the Formation of Lead Zirconate Titanate Solid Solutions under Hydrothermal Conditions
Reaction mechanisms in the formation of PZT solid solution were studied under hydrothermal conditions (Pb/(Zr+Ti) = 1.0 to 1.9, Zr/Ti = 0/10 to 10/0, 1M to 5M KOH, 100° to 220°C, 2 h). A yellow… Expand
Wear analysis of swash plate/slipper pair of axis piston hydraulic pump
Abstract The paper presents a method on the basis of Elasto Hydrodynamic Lubrication (EHL) model to analyze the wear behavior of swash plate/slipper pair. Based on the analysis of film thickness, the… Expand
Large dynamic range high resolution digital delay generator based on FPGA
- Y. Song, H. Liang, L. Zhou, Jiye Du, J. Ma, Z. Yue
- International Conference on Electronics…
- 3 November 2011
A novel digital delay generator (DDG) based on FPGA was designed with 4.4ms range and 65ps resolution. The time-to-digital conversion (TDC) utilizing dual tapped delay lines was implemented in the… Expand
Stability analysis of an underground power cavern in a bedded rock formation
Abstract An underground power cavern situated in bedded sandstone rocks was evaluated using the finite element method. The rock formation had a set of joints vertically with an opening of less than… Expand
[Alkaloids from Stephania succifera H. S. Lo et Y-Tsoong].
- Z. Xue, P. L. Zhang, J. Ma
- Chemistry, Medicine
- Yao xue xue bao = Acta pharmaceutica Sinica
- 1 March 1986
Eight alkaloids were isolated from Stephania succifera H. S. Lo et Y-Ts0ong. Alkaioids Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅷ were identified as dehydrocrebanine, (1)-tetrahydropalmatine, crebanine, schefferine and… Expand