Fluorescence two-dimensional differential gel electrophoresis ( 2-D DIGE ) can be used to quantify variation in the 2-D DIGE process and establish statistically valid thresholds for assigning quantitative changes between samples .< ref > Tonge, R., Shaw, J., Middleton, B., Rowlinson, R., Rayner, S., Young, J., Pognan, F., Hawkins, E., Currie, I. and Davison, M. ( 2001 ), Validation and development of fluorescence two-dimensional differential gel electrophoresis proteomics technology.

The heat equation is an important partial differential equation which describes the distribution of heat ( or variation in temperature ) in a given region over time.

The heat equation is an important partial differential equation that describes the distribution of heat ( or variation in temperature ) in a given region over time.

A variation of ECL in which all signal paths and gate inputs are differential is known as differential current switch ( DCS ) logic.

A proposed way to distribute the power to the wheels, is to use the concept of gearless differential, of which a review has been reported by Provatidis, but the various configurations seem to correspond either to the " sliding pins and cams " type, such as the ZF B-70 available for early VWs, or are a variation of the ball differential.

Two long papers published in 1840 — one on attractions and Clairaut's theorem, and the other on the variation of gravity at the surface of the earth — also demand notice, as do his mathematical memoirs on the critical values of sums of periodic series ( 1847 ) and on the numerical calculation of a class of definite integrals and infinite series ( 1850 ) and his discussion of a differential equation relating to the breaking of railway bridges ( 1849 ), research related to his evidence given to the Royal Commission on the Use of Iron in Railway structures after the Dee bridge disaster of 1847.

For a general differential form, the Lie derivative is likewise a contraction, taking into account the variation in X:

Using the first variation of,, in place of yields the first variation of, ; this is similar to how the differential is obtained from the gradient.

In that same year, Charles Ehresmann, a student of Cartan's, presented a variation on the connection as a differential form view in the context of principal bundles and, more generally, fibre bundles.

One of the most important aspects of functions of bounded variation is that they form an algebra of discontinuous functions whose first derivative exists almost everywhere: due to this fact, they can and frequently are used to define generalized solutions of nonlinear problems involving functionals, ordinary and partial differential equations in mathematics, physics and engineering.

Olga Arsenievna Oleinik introduced her view of generalized solutions for nonlinear partial differential equations as functions from the space BV in the paper, and was able to construct a generalized solution of bounded variation of a first order partial differential equation in the paper: few years later, Edward D. Conway and Joel A. Smoller applied BV-functions to the study of a single nonlinear hyperbolic partial differential equation of first order in the paper, proving that the solution of the Cauchy problem for such equations is a function of bounded variation, provided the initial value belongs to the same class.

Unlike a parabolic profile flow generated from a pressure differential, a plug flow ’ s velocity profile is approximately planar, with slight variation near the electric double layer.

In 1863 he had still not converted to the new ideas, but by 1874 he was able to write: " Fifteen years have sufficed to establish a theory, of which the principal ponts, so far as they affect systematic botany ... in familiar Darwinian manner, variation, differential survival and heredity producing new varieties and species.

Torsional oscillations are the time variation in solar differential rotation.

Essentially, one splits the output of the fiber into two principal polarizations ( usually those with dτ dω = 0, i. e. no first-order variation of time-delay with frequency ), and applies a differential delay to bring them back into synch.

Some may have a uniform slate-grey color, but others demonstrate a considerable variation of dark blues, greys and blacks, all tightly mottled .< ref name =" factsheet ">

The auguste face base makeup color is a variation of pink, red, or tan rather than white.

ClearType attempts to improve the appearance of text on certain types of computer display screens by sacrificing color fidelity for additional intensity variation.

This opinion is shared by the font designer Thomas Phinney, program manager for fonts and core technologies at Adobe Systems: " There is also considerable variation between individuals in their sensitivity to color fringing.

Chart showing the variation of color of universal indicator paper with pH

There is great variation in color, size, and type of the bird species that call the gulf home.

In any case, it is rather likely that the underlying mechanism is not overly complex and, as indicated above, does not involve very many genes and alleles: Unlike for example the variation seen in human skin color, Peppered Moth morphs are not clinal and can generally be readily distinguished from another.

The Styan's red panda is supposedly larger and darker in color than its Western conspecific, but with considerable variation in both subspecies, and some individuals may be brown or yellowish brown rather than red.

The word originated as a term used in a neutral context to refer to black people, as a variation of the Spanish / Portuguese noun negro, a descendant of the Latin adjective niger (" color black ").

After 1943, however, both series were produced in color and became virtually indistinguishable, with the only stylistic difference being in the variation between the opening theme music and titles.

These fair skinned individuals often have lightly pigmented or amelanotic melanomas which will not present easy-to-observe color changes and variation in colors.

The Texas longhorns show great variation in coat color

Seurat believed that a painter could use color to create harmony and emotion in art in the same way that a musician uses counterpoint and variation to create harmony in music.

Some color variation can be observed between types, caused by differences in the gas mixtures used.

The team logo remained the same, for the exception of the new color variation.

A common example is the color variation that appears in pearlescent auto finishes or " metallic " paper ; e. g., Kodak Endura Metallic, Fujicolor Crystal Archive Digital Pearl.

Though this explanation gives an idea of eye color delineation, it is incomplete, and all the contributing factors towards eye color and its variation are not fully understood.

In this species ' wide geographic range, much variation of size, color, and markings commonly occurs.

However, not only the color of the model's body must be regarded, but rather the < u > entire </ u > model — including baseplate, interior, windows — and thus changes in different components can lead to a factorial increase in variation possibilities.

The Cat Fanciers ' Association considers the Himalayan a color variation of the Persian rather than as a separate breed, although they do compete in their own color division.

The Regular pisco variation is quite bland in taste since the alcohol is mixed with water, reminiscent of a weak rum, and its odor is very sweet and woody with a slight yellowish tinge to the color.

Another useful distinction is between traits that are likely to be adaptations ( such as the nose ) vs. those that are byproducts of adaptations ( such the white color of bones ), or are due to random variation ( non-adaptive variation in, say, nose shape or size ).

* Sensitivity analysis – the study of how the variation in the output of a model depends on variations in the inputs

* I / O ports: Expansion port, tape recorder connector ( 1200 baud variation on the Kansas City standard for data encoding ), aerial TV connector ( RF modulator ), composite video and RGB monitor output

Ringing refers to an output variation that cycles above and below an amplifier's final value and leads to a delay in reaching a stable output.

Based on passive cable theory one can track how changes in a neuron ’ s dendritic morphology changes the membrane voltage at the soma, and thus how variation in dendrite architectures affects the overall output characteristics of the neuron.

* Levcopoulos and Petersson describe a variation of heapsort based on a Cartesian tree that does not add an element to the heap until smaller values on both sides of it have already been included in the sorted output.

The variation caused by the sunspot cycle to solar output is relatively small, on the order of 0. 1 % of the solar constant ( a peak-to-trough range of 1. 3 W · m < sup >− 2 </ sup > compared to 1366 W · m < sup >− 2 </ sup > for the average solar constant ).

The high point of their symphonic prog output was Foxtrot ( 1972 ), which contains their only long suite " Supper's Ready " written as a variation of sonata form, and Selling England by the Pound ( 1973 ).

) The delay variation means that signals consisting of multiple frequency components will suffer distortion because these components are not delayed by the same amount of time at the output of the device.

**( a ) over the permitted dynamic range, negligible variation in the expected characteristic of the output signal, and

It is the view within monetary economics that variation in the money supply has major influences on national output in the short run and the price level over longer periods and that objectives of monetary policy are best met by targeting the growth rate of the money supply.

Many, possibly most, stars have at least some variation in luminosity: the energy output of our Sun, for example, varies by about 0. 1 % over an 11 year solar cycle.

To guide therapy, a central venous catheter and an arterial catheter may be placed ; measurement of other hemodynamic variables ( such as cardiac output, mixed venous oxygen saturation, or stroke volume variation ) may also be used.

The function of this capacitor, known as a reservoir capacitor ( or smoothing capacitor ) is to lessen the variation in ( or ' smooth ') the rectified AC output voltage waveform from the bridge.

A saltwater thermal sink in the collector could ' flatten ' the diurnal variation in energy output, while airflow humidification in the collector and condensation in the updraft could increase the energy flux of the system.

It is seen through variation in output.

The reflector voltage may be varied slightly from the optimum value, which results in some loss of output power, but also in a variation in frequency.

The electronic tuning range of the reflex klystron is usually referred to as the variation in frequency between half power points — the points in the oscillating mode where the power output is half the maximum output in the mode.

Total solar output is now measured to vary ( over the last three 11-year sunspot cycles ) by approximately 0. 1 %; see solar variation for details.

" Shewhart stressed that bringing a production process into a state of statistical control, where there is only common-cause variation, and keeping it in control, is necessary to predict future output and to manage a process economically.

Another source of the variation in reproductive output is Spotted Owl age.

Actual production of any product ( or operation of any system ) involves some inherent variation of input and output.

The main drawback of this device is that, as a result of the variation in the frequency of the oscillating voltage supply, only a very small fraction of the ions leaving the source are captured in phase-table orbits of maximum radius and energy so that the output beam current is rendered weak.