Histograms, particle size

Average particles area (A), its standard deviation (6A), and particle area histogram (particle size distribution based on area) ... 

Figure 13. Histogram particle size distribution obtained by electron microscopy. Curve the normal distribution with mean 1530 and standard deviation 340. Analytical centrifuge I960 A.

Fig. 6 a TEM image of the silver nanoparticles, b Histogram particle size distribution measurements made from the TEM image by counting 100 particles in order to obtain average particle diameter... 

Fig. 1.12 Histogram showing the distribution of particle sizes for the sample of powder referred to in Table 1.5. (After Herdan )...

Bulk particulates of various sizes can be analysed to display their particle size distribution and a frequency histogram plotted, as shown in Figure 1.8. 

Fig. 2. TEM images and the corresponding particle size distribution histograms of (a) 6 nm, (b) 7 nm, (c) 8 nm, (d) 9 nm, (e) 10 nm, (f) 11 nm, (g) 12 nm, and (h) 13 nm sized iron nanoparticles showing the one nanometer level increments in diameter. The scale bars at the bottom of the TEM images indicate 20 nm...

Particle size data are usually represented by a histogram, where the dimensions of the particles are plotted against their frequencies of occurrence. 

Figure 1 represents a particle size distribution histogram. Where a preponderance of smaller particles occurs, the curve is right skewed and where a preponderance of larger particles occurs, the curve is left skewed. The symmetrical histogram is rarely found in practical applications. 

Figure 3. Transmission electron microphotographs and histograms of the particle size distribution for Pd nanoparticles synthesized at Wo 3 (a) and 7 (b) [23] and isolated via the proposed method.

Histograms of gold particle size distributions are shown in Figure 4. 

Figure 4. Particle size histograms for the gold deposited onto various carbon samples. (Partially reprinted from Topics in Catalysis, 122 (1) 2007, pg 248, with permission from Elsevier Science).

Pt particle size distributions (histograms) measured directly from TEM images are shown in Figure 6. 

Figure 4. Electron micrographs and relative histograms of the particle size distribution of commercial Rh/y-Al203 (Bl) and Rh/y-Al203 (MVS) (B2). (Reprinted from Ref [24], 2003, with permission from Elsevier.)...

Figure 6. Electron micrographs and relative histograms of the particle size distribution of Pd/PDMP (MVS).

Figure 7. Electron micrographs and relative histograms of the particle size distribution of 5% (w/w) of Pt/y-Al203 systems obtained (a) from the solution containing Pt particles with hydrodynamic diameter of 0.9 nm (b) from the solution containing Pt particles with hydrodynamic diameter of 1.5 nm.

Typical HRTEM images of samples calcined at different temperature and then activated at 800°C are reported in Fig.3, along with the histograms of particle size distribution. 

Table 1 details the method of preparation and the chemical characteristics of the three studied samples which representative micrographs are shown in Figure 1. The table also reports the mean diameters of the gold nanoparticles that were evaluated from the histograms of particle sizes (fig. 1) established by counting the sizes of more than 10000 particles per sample... 

Particle size distribution may be characterized in terms of a spread of values in a table, a graphical representation in the form of a histogram (block diagram), or as... 

The shade of a product is another parameter which is influenced by the particle size (Sec. 1.6.1.2). This is easy to see by comparing the reflection curves of two Pigment Yellow 83 white reductions in an alkyd-melamine resin system. The electron photomicrographs in Fig. 65 and the particle size distribution histograms in Fig. 66 represent these samples. At equal pigment concentration, curve 1 of the two remission curves in Fig. 67 reflects the behavior of the pigment with the smaller... 

A few examples will exemplify the relation between the particle size distribution of a pigment and its lightfastness. Fig. 73 shows histograms of the respective... 

Mass fractions are easily reported using a histogram. Figure 15.19 is a histogram of the mass fraction vs. the particle size for the data in Table 15.4. 

Figures 13.23a and b show the PdO particle size distribution of PdO-supported catalysts prepared from an acidic hydrosol (neutralization of palladium nitrate solution by addition of soda) and a basic one (neutralization of soda by addition of palladium nitrate). Comparisons with the corresponding histograms of the initial suspensions (Figs. 7b and 9b), show that the distributions are not significantly modified. Only a very slight increase of the standard deviation of the dispersion values is observed...

FIGURE 13.28. TEM micrograph and histogram of the PdOSn catalyst and particle size distribution. 

Figure 1. Particle size histogram of dust collected during mock run (no cotton being processed) with humidifier off and Pneumafil lint capture system on. Conditions dgn., nonlinear 16,059 particles VE, 80 g-g/m. ...

Figure 4. Particle size histograms of dust collected while processing cotton and polyfethylene terephthalate) (PET). Key 100% PET VE, 577 gg/nP N,...

When selecting a particle for analysis, it is important to consider the effects of particle size on fluorescence histogram coefficient of variation (CV). Small particles of uniform size, such as 1 pm diameter latex spheres, exhibit a sharp, narrow histogram with a relatively small CV (Fig. lA). Spherical bacteria. 

Table 6.3 includes particle sizes for bimetallic catalysts determined by TEM. Figure 6.4 shows particle size distribution histograms of PtSn-BM and NiSn-BM bimetallic catalysts and the corresponding Pt and Ni monometallic ones. In all the cases, the sohds were subjected to a hydrogen reduction pretreatment. These... 

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