Point counting grid

For other quantification, specialized graticules are available, including point counting, grids, concentric circles, and special scales. The latest methods of quantification involve automatic image analysis. 

U220A14, and layer silicate-rich CS IDP U230A43. (d)-(f) Corresponding X-ray point count analyses obtained from the thin sections on a two-dimensional grid using a 200 keV electron probe with <50 nm spatial resolution at each point. Solid boxed area in (f) shows Mg-Fe-Si composition of the layer silicate and dotted boxed area shows carbonate Mg-Fe composition (source Bradley et aL, 1992). 

Metallurgical coke is heterogeneous and often contains several different types of optical texture. In order to obtain a statistically reliable description of optical texture, each coke is point-counted. The frequency of occurrence of each type of texture at points on a grid is recorded on a Swift Automatic point counter. 

Glagolev-Chayes Method A method of point counting thin sections using a superposed grid. 

For point analysis, point counting is done by randomly distributing a grid of points over the sample in the microscope or on a photomicrograph, or by randomly moving a microscope crosshair and counting the fraction of the total point count that falls in a given phase (Pp). 

Move the sample tube in toward the smoke source from all directions at this level to the point where particle counts show a sudden and rapid rise to high levels (lO per cubic foot). This defines the envelope of dispersion away from the smoke source and demonstrates the airflow parallelism control of the room. Repeat for all grid areas. Prepare a diagram showing grid areas and corresponding dispersion envelopes. 

Grid Area No. Work Zone Entrance Plane Smoke Generation Time Acceptance Criteria Actual Particulate Count Particulate Count at 2 ft from the Smoke Generation Point... 

Critical Sampling Point Determination in Cleanroom (Nonviable Count) by Grid Method... 

To identify sampling points for the monitoring particulate count (nonviable) by generating data for nonviable particulate matter in class 100 filling and lyophilization room by grid technique. 

A computer scores the math questions. For the multiple-choice math questions, the computer counts the number of correct answers and gives one point for each. Then it counts your incorrect answers and deducts one-quarter point from the total of your correct answers. For the grid-in math questions, the computer counts the number of correct answers and gives one point for each. No points are subtracted for incorrect answers to the grid-in questions. If the score that results from the subtraction is a fraction of a point,... 

Also, this method does not allow the recognition of shoulders, but of real local maxima only. If, especially for large step widths, a maximum is placed just between two grid points, the measured counting rates at both points will be smaller by several percent than the (unmeasured) maximum itself Using the above formula for A permits a rather accurate estimation of the unknown peak height. 

In the hard-sphere model [Ciubotariu, Medeleanu et al., 2004], the van der Waals molecular surface SA " (also known as Total molecular Surface Area, TSA) is then defined as the exterior surface of the union of all such spheres in the molecule, that is, the area of the van der Waals molecular surface. It can be calculated by generating a uniform grid around each sphere of the molecule atoms, followed by the counting of the number of points generated on the surface n, consisting in the points that satisfy at least one of the following equalities ... 

To set up the grid reference, count along the columns at the top of the board, starting from the left and then count down the rows. The position of point 4 3 would be 4 holes from the left and 3 holes down. 

You must decide whether or not the origin (0,0) is a point on your graph. Whether or not to include the origin will usually be clear from the nature of the results. For example, if the concentration of a reactant is shown to affect the rate of a reaction, it is reasonable to assume that if the reactant were absent the reaction would not occur, so the rate would be zero when the concentration was zero. The origin can then provide a further useful point to be plotted. Chosen scales should be easily readable, but errors are counted if unhelpful scales are used. For example, the division of each of the two-centimetre squares on the graph grid into three makes accurate plotting very difficult. 

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