Derived count rate 意味
WebDec 3, 2015 · mean count rate是平均光强的意思 因为采集光强用的光电倍增管计数，所以光强又叫count rate，一般同一个样品在恒定的浓度下，光强的增加意味着样品分子量的增 …
Derived count rate 意味
Did you know?
If an attenuator is used during the measurement that allows only 0.3% of the light to pass then the measured mean count rate will only be 0.3% of the signal one would be obtaining if no attenuator were present. In the Zetasizer a range of different attenuators can be used, and in automatic mode the system will … See more If the detector in the Zetasizer collects 1,000,000 photons over the duration of 100 seconds, then the mean count rate during that measurement was 1,000,000 photons / 100 sec = … See more In principle, in a perfect sample the derived count rate could be used for static light scattering (SLS), where the scattering as a function of sample concentration leads to the … See more Select a workspace, for example the size workspace, and then edit it – Record View Parameters – Measurement – Size – Derived Count Rate and move it to the work space with the right arrow. The derived count rate for … See more WebDerived rates require an active Advanced Rates add-on! The derived rates allow for more flexible prices based on your standard rates. Derived rates calculate their prices by adding or subtracting amounts (Derived Amount rate) or percentage (Derived Percent Rate) to/from an existing standard rate. When the prices in a standard rate change, the ...
Webderived from the Polydispersity Index, a parameter calculated from a Cumulants analysis of the DLS-measured intensity autocorrelation function. In the Cumulants analysis, a single … WebIf the above function is estimated for many measured intervals with various values of D subtracted (and for various values of n) it should be found that for values of D above a …
WebThe effect in the derived count was substantial and the inflection point (or the CMT) was easily discernible at the intersect between the two lines, as demonstrated in Figure 1. For the initial temperature range, from 40°C – 51°C the count rate did not vary significantly, and hence a straight line was applied to the data points. WebNov 8, 2024 · The maximum count rate for the measurement should be 500-600 kcps. The attenuator will need to be adjusted after measuring the scattering intensity on maximum intensity in most cases, especially if the count rate is greater than 600 kcps. 2) Dilution check: The second way to verify that the concentration is suitable for DLS measurements …
WebA graph of the count rate of the source against time is plotted. From the graph, the time taken for the count rate to fall by half is measured. A number of measurements are made and an average ...
Webtime interval, constitutes the count rate. One may count again for the same amount of time and find a slightly different number of counts with a slightly different count rate. Here we see an example of a directly measured physical quantity (the counts) and a derived physical quantity (the count rate). The question which arises is what is the ... how to take care of pet jellyfishWebOnce the measurement is finished, on the Analyze page select the project the dispersant measurement was saved in, select the cog icon and add derived count rate to the records view. Then use the count rate value in the record (which is in kcps) when setting up the particle concentration measurement as the buffer scattering count rate. Figure 8 ... how to take care of pitcher plantWebThe derived count rate is the measured count rate divided by the attenuation factor, as shown in the expression below. Derived Count Rate = (Measured Count Rate) / … how to take care of plated jewelryWebThe derived count rate is the theoretical count rate one would obtain at 100% laser power with zero attenuation. Mean Count Rate (kcps) The actual average number of photons … how to take care of pit bullsWebJan 25, 2007 · When compensating for these effects, the derived count rate will increase by a factor, but the uncertainties will increase by the same factor, so the significance of detection is the same. 6. Modifications. 2005-12-04 - first revision . 2006-04-12 - … ready or not movie charactersWebThe derived count rate is the count rate the instrument would measure in the absence of attenuation. It is an indirect indication of the amount of scattering objects in your sample. If this derived cound rate trends with time, it may indicate that some particles of your sample may be sedimenting.It could also mean that some particles are ... how to take care of piercingsWebThe "derived count rate" is a calculated parameter in the Zetasizer Nano software, and is representative of the scattering intensity that would be measured at the APD in the absence of the laser attenuation filter. The APD detector in the Zetasizer Nano exhibits a linear response across a broad range of light intensity. ready or not movie age rating