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The sample is spotted at one corner of a square plate, developed, air-dried, then rotated by 90 ° and usually redeveloped in a second solvent system.
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sample and is
The general theory of resonance shifts is used to derive a general expression for the second moment Af of a polycrystalline paramagnetic sample and is specialized to Af.
The first is a wide-ranging sample of successful tonal analyses.
The differentiation, however, is not very much greater, as shown by the fact that Athabascan shows 3.46 stems per meaning slot as against 2.75 for Yokuts, with a slightly greater number of languages represented in our sample: 24 as against 21.
Upon completion of the purging step, additional initiator appropriate for the molecular weight of the sample desired is added, and the system is then warmed to the polymerization temperature, at which the reaction is allowed to go to completion.
Therefore, it is recommended that in such cases the sample be replaced, or if used, the results of dimensional change or dimensional restorability tests be considered as indicative only.
stereo BGS 5031 ) is a good sample of the special, elegant art of English madrigal singing.
The collection is often the sample space of an experiment.
If the list is a statistical sample, we call the resulting statistic a sample mean.
The arithmetic mean of a variable is often denoted by a bar, for example ( read " x bar ") would be the mean of some sample space.
A test result ( calculated from the null hypothesis and the sample ) is called statistically significant if it is deemed unlikely to have occurred, assuming the truth of the null hypothesis.
The expected value of F is ( where n is the treatment sample size )
Reporting sample size analysis is generally required in psychology.
Power analysis is often applied in the context of ANOVA in order to assess the probability of successfully rejecting the null hypothesis if we assume a certain ANOVA design, effect size in the population, sample size and significance level.
Power analysis can assist in study design by determining what sample size would be required in order to have a reasonable chance of rejecting the null hypothesis when the alternative hypothesis is true.
Eta-squared is a biased estimator of the variance explained by the model in the population ( it estimates only the effect size in the sample ).
To do so, a sample of the soil is mixed into a clear container with some water, creating an almost completely saturated liquid.
A formula for calculating an unbiased estimate of the population variance from a finite sample of n observations is:
note that the above online algorithm III is a special case of an algorithm that works for any partition of the sample into sets,:
Based on this sample, the estimated population mean is 10, and the unbiased estimate of population variance is 30.
sample and spotted
Obviously this is an extreme distribution that would be spotted easily, but in a larger sample something similar could happen without it being so apparent.
sample and at
Since the absorption of radio waves in rocklike material varies with wave length, it should be possible to sample the temperature variation at different depths beneath the surface and possibly detect changes in the structure or composition of the lunar surface material.
Douglass prepared his sample of Af by thermal decomposition of aqueous chromic acid at 300 - 325-degrees-C.
One sample, which had been exposed to the atmosphere after evacuation at 375-degrees-C, showed the presence of adsorbed water ( about 0.3 wt ) ) as evidenced by a weak resonance line which was very narrow at room temperature and which disappeared, due to broadening, at low temperature.
The mixtures of sample plus cell suspension were allowed to stand at room temperature for 1 Aj.
For the albumin method, equal volumes of 30% bovine albumin, sample and 2% cells suspended in saline were allowed to stand at room temperature for 1 hr and then were centrifuged at 1000 rpm for 1 Aj.
Children whose reading scores were at least one standard deviation below the regression line of each total third-grade school population were considered under-achievers for the purposes of sample selection.
Efforts were made to take the grab samples at random periods so that the mass of data could be treated as a 6-hr. composite sample.
Three specimens for each sample to be tested are required in order to arrive at a satisfactory average of performance.
Sometimes an internal standard is added at a known concentration directly to an analytical sample to aid in quantitation.
Originally it was headerless, being simply 8-bit µ-law-encoded data at an 8000 Hz sample rate.
The application of the pulsed voltage to the sample allows for individual ions at the sample surface to have their electric field, and hence atomic bonding, temporarily disrupted.
This results in ejection of an ionised atom from the sample surface at a known time.
Semi-conductor materials are often analysable in atom probe, however sample preparation may be more difficult, and interpretation of results may be more complex, particularly if the semi-conductor contains phases which evaporate at differing electric field strengths.
This sample was used to synthesize the element ununseptium for the first time in 2009 at the Joint Institute for Nuclear Research, Russia, after it was bombarded with calcium-48 ions for 150 days.
* whiff rate: a term, usually used in reference to pitchers, that divides the number of pitches swung at and missed by the total number of swings in a given sample.
In HPLC the sample is forced by a liquid at high pressure ( the mobile phase ) through a column that is packed with a stationary phase composed of irregularly or spherically shaped particles, a porous monolithic layer, or a porous membrane.
A sample of households are visited by interviewers who record the details of the household as at census day.
Censuses during independence have been taken 1947, 1960 ( the first comprehensive demographic investigation ), 1970, 1976 ( a sample census ), 1981, 1994 and 2004 and the next would be taken at 2017.
It involves heating the sample at a controlled rate and recording the heat flow either into or from the specimen.
sample and one
One drop of each sample was added to one drop of a 2% suspension of group Af or group B red cells in a small Af test tube.
An interview schedule of open-ended questions and a multiple-choice questionnaire were prepared, and one parent of each of the sample children was seen in the home.
( 2006 ) have tested a sample of four Ainu men and have found that one of them belongs to haplogroup C3.
Based on analysis of one sample of 51 modern Ainus, their mtDNA lineages have been reported to consist mainly of haplogroup Y ( 11 / 51
Qualitative analysis gives an indication of the identity of the chemical species in the sample and quantitative analysis determines the amount of one or more of these components.
* In statistics, spatial autocorrelation between sample locations also helps one estimate mean value uncertainties when sampling a heterogeneous population.
Whenever a relative atomic mass value differs by more than 1 % from a whole number, it is due to this averaging effect resulting from significant amounts of more than one isotope being naturally present in the sample of the element in question.
This motion causes the column to see one partitioning step per revolution and components of the sample separate in the column due to their partitioning coefficient between the two immiscible liquid phases used.
For example, if n samples are taken from a Cauchy distribution, one may calculate the sample mean as:
When a sample consists of more than one variable, descriptive statistics may be used to describe the relationship between pairs of variables.
Several dozen other spheres are described as one-sentence blurbs, a few as page-long summaries, and one in detail as the setting for a sample adventure, " Journey to Stonekeep.
The translation given for " I like this one ", in the sample phrases in the main Esperanto article, offers a significant example.
* When scanning the fluorescent intensity across a plane one has fluorescence microscopy of tissues, cells, or subcellular structures, which is accomplished by labeling an antibody with a fluorophore and allowing the antibody to find its target antigen within the sample.
This is the use of the factor n-1 in the denominator of the formula, rather than just n. This occurs when the sample mean rather than the population mean is used to centre the data and since the sample mean is a linear combination of the data the residual to the sample mean overcounts the number of degrees of freedom by the number of constraint equations — in this case one.
The percentage chosen depends on the size of the protein that one wishes to identify or probe in the sample.
Some collections are capable of being completed, at least to the extent of owning one sample of each possible item in the collection.
A subject is presented with two known samples ( sample A, the reference, and sample B, an alternative ), and one unknown sample X, for three samples total.
The Corbino effect is a phenomenon involving the Hall effect, but a disc-shaped metal sample is used in place of a rectangular one.
That is, one may generate an inverse hexagonal columnar phase ( columns of water encapsulated by amphiphiles ) or an inverse micellar phase ( a bulk liquid crystal sample with spherical water cavities ).
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