A possible additional source of patterning information is spatial cues, which can be divided into dorsalising signals from the roof plate boundary organiser (Broom et al., 2012) and rostrocaudal cues originating from the midbrain/hindbrain isthmus.
In this study, we show that the initially contiguous expression of Atoh1 in dorsal r1 in chick and mouse is composed of two cryptic progenitor domains that can be distinguished by their differential dependency on two organisers: the midbrain-hindbrain isthmus and the roof plate boundary.
Based on the mechanical models of plane and stress analysis for elastic roof, using the boundary integral equation which is obtained by the natural boundary reduction, this paper obtains stress functions of elastic half roof, as well as the analytical and numerical solutions to the each stress field functions.
Among these are: roof, soils, septic, boundaries, underground tanks, structural pests (if the seller has not provided a report), and so forth.
The study results indicate: (1) the overlying sandstone layer to the coal layer is the key to the stability of the mining roof; (2) the broken boundary has the most effect, followed by the arc boundary and linear boundary; (3) the safe distance from the mining boundary should be at least 400 m if the proposed structure is to be built near an active mining site.
There were armed men on the roof of the house, boundary walls and around my car.
Wind loads used for loading effects estimation were obtained based on wind pressures measured from a 1 400 scaled roof model under a boundary layer wind flow configuration.
With the consideration of the immediate roof as the top boundary of support-top coal systems, the mechanical model for two-leg shield support and surrounding rock can be established.
Instead of using temperature at the bottom of a green roof as the lower boundary condition, the equations for heat conduction through the surface and bottom of the substrate are adopted.
In this study, simultaneous pressure measurements are made on a large gymnasium roof model in a boundary layer wind tunnel and parts of the model test data are used as the training sets for developing two ANN models to recognize the input output patterns.
