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The Scherrer equation, in X-ray diffraction and crystallography, is a formula that relates the size of sub-micrometre crystallites in a solid to the broadening of a peak in a diffraction pattern. It is often referred to, incorrectly, as a formula for particle size measurement or analysis. It is named after Paul Scherrer.
The size of amoeboid cells and species is extremely variable. The marine amoeboid Massisteria voersi is just 2.3 to 3 micrometres in diameter, [ 20 ] within the size range of many bacteria. [ 21 ] At the other extreme, the shells of deep-sea xenophyophores can attain 20 cm in diameter. [ 22 ]
Plant cellulose, which makes up the cell walls of most plants, is a tough, mesh-like bulkwork in which cellulose fibrils are the primary architectural elements. While bacterial cellulose has the same molecular formula as plant cellulose, it has significantly different macromolecular properties and characteristics. [ 8 ]
The secondary cell wall, a thick layer formed inside the primary cell wall after the cell is fully grown. It is not found in all cell types. It is not found in all cell types. Some cells, such as the conducting cells in xylem , possess a secondary wall containing lignin , which strengthens and waterproofs the wall.
ρ p: Actual particle density (g/cm 3) ρ g: Gas or sample matrix density (g/cm 3) r 2: Least-squares coefficient of determination. The closer this value is to 1.0, the better the data fit to a hyperplane representing the relationship between the response variable and a set of covariate variables.
Though the effects of nanotopography on cell behavior have only been recognized since 1964, some of the first practical applications of the technology are being realized in the field of medicine. [4] Among the few clinical applications is the functionalization of titanium implant surfaces with nanotopography, generated with submersion etching ...
2.3 nm – length of a phospholipid; 2.3 nm – smallest gate oxide thickness in microprocessors; 3 nm – width of a DNA helix; 3 nm – flying height of the head of a hard disk; 3 nm – the average half-pitch of a memory cell manufactured circa 2022; 3.4 nm – length of a DNA turn (10 bp) 3.8 nm – size of an albumin molecule
1.233 × 10 3: One acre-foot: 2.5 × 10 3: Volume of an Olympic size swimming pool of minimal depth (50 m × 25 m × 2 m). 3.054 × 10 3: Volume of each of the nine spheres of the Atomium in Brussels 1.13 × 10 4: Gas volume in the first zeppelin LZ 1: 1.1866 × 10 4: Amount of concrete in Trbovlje Chimney: 1.56 × 10 4: Quebec's 2001 output of ...