Of the initial six cell lines originating from explants of Taxus globosa, or Mexican yew (stem internode, leaves and meristematic tissue), three were selected for their microbial and oxidation resistance, two from leaves and the other from stem internode. A study of their behavior, both in terms of cell growth, and of baccatin III and paclitaxel production, was developed in suspension cultures ...

Plant architecture results from the activity of the shoot apical meristem, which initiates leaves, internodes, and axillary meristems. KNOTTED1-like homeobox (KNOX) genes are expressed in specific patterns in the shoot apical meristem and play important roles in plant architecture. KNOX proteins interact with BEL1-like (BELL) homeodomain proteins and together bind a target sequence with high af...

In this paper we study the behaviour of solutions of Navier{Stokes equations with adherence to the bottom and traction by wind at the surface when the aspect ratio = depth=lenght of the domain tends to 0. Precisely we prove that when wind is moderate, a variational solution converges to the solution of a vertical diiusion model. This model is either quasistationary or nonstationary, according t...

-visual exposure Most of the time, knee prosthesis doesn’t require a long standard approach everting the patella and cuting extensor mechanism on a long distance. On the opposite, MIS is not operating through a keyhole. Lenght of the skin incision is not the most important even if it is the main thing that the patient will see postoperatively. But when it is possible to do it with a small incis...

In this paper, area preserving multi-scale representations of planar curves are described. This allows smoothing without shrinkage at the same time preserving all the scale-space properties. The representations are obtained deforming the curve via geometric heat flows while simultaneously magnifying the plane by a homethety which keeps the enclosed area constant. When the Euclidean geometric he...

We consider homogenization questions related to Maxwell partial differential equations. More precisely, we consider an assembly of particles, viewed as dipoles, separated in a peridioc way with a typical lenght denoted by ". The size of each dipole is denoted by r ". Depending on the relative size of these two scales, we describe the limiting partial differential equations, showing a typical di...

Search algorithms are considered as one of the most important parts of Information Retrieval. In this paper we show diierent algorithms regarding string matching and, speciically, the Shift Or algorithm. As far as eeciency is concerned, this algorithm depends on the pattern lenght which is bounded by the computer word size. Our main interest is to build a modiied version that does not depend on...

Using a glycerination procedure designed to avoid excessive plasmolysis or disruption of the ectoplasm, microfilaments in bundles at the ectoplasm-endoplasm interface of Nitella internode cell segments were found to bind rabbit heavy meromyosin (HMM) in situ. All HMM arrowheads in a bundle seem to have the same polarity and many lie in register as judged from the electron micrographs; the arrow...