Polar grid

Centered contamination Polar grid or stratified rectangular or bottle rack grid... 

Some of the deficiencies of the empirical two-product model can be eUnunated by adding information to a multiple product model. One solution is to map products from chamber experiments onto a carbon-number-polarity grid based not only on the empirically observed SOA mass but also expected product properties [55]. Chemical evolution could be described on the grid, enabling a sensible description of aging. 

Pankow JF, Barsanti KC (2009) The carbon number-polarity grid a means to manage the complexity of the mix of organic compounds when modeling atmospheric organic particulate matter. Atmos Environ 43(17) 2829-2835... 

A clearer plot can be produced using a polar grid, instead of a rectilinear grid. First, we define a polar grid of points ... 

Another view of the vector field is presented in Figure 2.2(b), in which the points are on a polar grid. Note that the magnitude of the electric field is constant at a given radius from the origin. There is no field along the z axis. 

Figure 2.2 (a) Electric field vector, Cartesian grid and (b) electric field vector, polar grid... 

This application is designed to analyze the concentrations of solute molecules near the wall when the hydropathic states of both wall and solutes are varied. The simulations are run using a grid of 55 x 55 cells forming a cylinder. The cylinder walls consist of stationary cells, B, that are either polar or nonpolar... 

Once the atomic contributions FA are determined, the corresponding integrals IA are subsequently computed on grids that consist of points on concentric spheres around each atom. Switching to polar coordinates r, 0, and < ) the radial and angular integrations are separated according to... 

The experiments described here were performed with a Digilab FTS40 Fourier transform instrument, with a liquid nitrogen-cooled Mercury Cadmium Telluride, (MCT), detector. The instrument is provided with a computer for data acquisition, storage and mathematical treatment. P-polarized incident light was obtained by means of an A1 wire-grid polarizer supported on a BaF2 substrate. 

Samples for infra-red absorption measurement were introduced between two rubbed nylon coated calcium fluoride substrates spaced 10 pm apart. To insure proper parallel alignment, samples were cooled at 0.02° C/minute from the isotropic to the Smectic C phase. The alignment was then checked using polarizing microscopy. Polarized IR spectra (32 scans per spectrum) were obtained using an FTIR spectrometer (IFS-66 Bruker, Pillerica, MA) equipped with a wire grid polarizer at a resolution of 2 cm"1. 

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