Bonamiosis due to the parasite Bonamia ostreae has been associated with massive mortality in flat oyster stocks in Europe. Control of the disease currently relies on disease management practices and transfer restriction. Previously, massal selections based on survival to challenge to infection with B. ostreae have been applied to produce flat oyster families with resistant progeny. In an attemp...

We consider the Schrödinger operator on the zigzag and armchair nanotubes (tightbinding models) in a uniform magnetic field B and in an external periodic electric potential. The magnetic and electric fields are parallel to the axis of the nanotube. We show that this operator is unitarily equivalent to the finite orthogonal sum of Jacobi operators. We describe all spectral bands and all eigenval...

The Constrained Bipartite Vertex Cover problem asks, for a bipartite graph G with partite sets A and B, and integers kA and kB , whether there is a vertex cover for G containing at most kA vertices from A and kB vertices from B. The problem has an easy kernel with 2kA · kB edges and 4kA · kB vertices, based on the fact that every vertex in A of degree more than kB has to be included in the solu...

purpose: to compare the short and long-term efficacy and complications of releasable suture vs conventional interrupted suture for scleral flap in trabeculectomy. methods: in a prospective randomized clinical trial, 42 eyes of 42 consecutive patients requiring trabeculectomy for uncontrolled primary glaucoma underwent conventional trabeculectomy (group a) and trabeculectomy with releasable sutu...

Let p:M → B be a family of compact manifolds equipped with a unitarily flat vector bundle F → M . We generalize Igusa’s higher Franz-Reidemeister torsion τ(M/B;F ) to the case that the fibre-wise cohomologyH(M/B;F ) → B carries a parallel metric. If moreover M admits a fibre-wise Morse function, we compute the difference of τ(M/B;F ) and the higher analytic torsion T (M/B;F ). We also generalis...

Doppler imaging studies have revealed that most rapidly rotating cool stars have high-latitude spots, which in many cases cover the stellar poles. The spectroscopic signature of polar spots is a filling in of the cores of spectral lines, which become flat-bottomed and may show bumps. Although the existence of polar spots is corroborated by spectroscopic and photometric measurements, and althoug...

Fiber reinforced Composite (FRC) retainers have been introduced as an aesthetic alternative to conventional metallic splints, but present high rigidity. The purpose of the present investigation was to evaluate bending and fracture loads of FRC splints bonded with conventional full-coverage of the FRC with a composite compared with an experimental bonding technique with a partial (spot-) resin c...

The study assessed soil erosion features in hilly agricultural watersheds in central Sichuan Province, China. Relationships among area percentages of land covers, soil erosion modulus, soil loss rate, and area percentage of erosion in the watersheds were examined by multivariate regression analysis. The first two regression models were constructed with area percentages of land covers as indepen...

Infiltration rate of water into the soil depends on the factors such as rock and litter cover, canopy cover, rainfall intensity, coarse material, land slope, soil texture and amount of initial soil moisture. The most important factors that are effective in the water infiltration rate of rangelands are livestock trampling and vegetation reduction due to the overgrazing. In present study, through...