The composition of resins is highly variable ; each species produces a unique blend of chemicals which can be identified by the use of pyrolysis – gas chromatography – mass spectrometry.

An Accelerator mass spectrometry | accelerator mass spectrometer used for radiocarbon dating and other analysis.

Also, mass spectrometry is categorized by approaches of mass analyzers: magnetic-sector, quadrupole mass analyzer, quadrupole ion trap, time-of-flight, Fourier transform ion cyclotron resonance, and so on.

Among the main branches of contemporary analytical atomic spectrometry, the most widespread and universal are optical and mass spectrometry.

In the direct elemental analysis of solid samples, the new leaders are laser-induced breakdown and laser ablation mass spectrometry, and the related techniques with transfer of the laser ablation products into inductively coupled plasma.

Protein identification and peptide sequencing by mass spectrometry opened a new field of proteomics.

* Inductively coupled plasma mass spectrometry

Through coupling of this magnification method with time of flight mass spectrometry, ions evaporated by application of electric pulses can have their mass-to-charge ratio computed.

Protein microarrays and high throughput ( HT ) mass spectrometry ( MS ) can provide a snapshot of the proteins present in a biological sample.

** Techniques: electrophoresis — His tag — affinity chromatography — x-ray diffraction — Proteomics — mass spectrometry

Techniques using mass spectrometry and a double spike isotope dilution have been used for K-Ca age dating.

Pyrolysis gas chromatography mass spectrometry is a method of chemical analysis in which the sample is heated to decomposition to produce smaller molecules that are separated by gas chromatography and detected using mass spectrometry.

* Collision-induced dissociation, a mass spectrometry mechanism

In mass spectrometry, discrete peaks appeared corresponding to molecules with the exact mass of sixty or seventy or more carbon atoms.

* Fourier transform ion cyclotron resonance mass spectrometry to determine the mass of ions from the frequency of cyclotron motion in a magnetic field.

DNA Gel electrophoresis is usually performed for analytical purposes, often after amplification of DNA via PCR, but may be used as a preparative technique prior to use of other methods such as mass spectrometry, RFLP, PCR, cloning, DNA sequencing, or Southern blotting for further characterization.

The problem is rather to find out what is actually happening, and this is especially difficult for the reason that `` we are busily being defended from a knowledge of the present, sometimes by the very agencies -- our educational system, our mass media, our statesmen -- on which we have had to rely most heavily for understanding of ourselves ''.

the prolusion in which the autobiographic statement about the epithet occurs is such a mass of intentionally buried allusions that almost nothing in it can be accepted as true -- or discarded as false.

Much more important is to grasp the feelings of the narrator ( whose full name is never given ) as he becomes aware of the disorganized and bewildered mass of French prisoners clustered together in a temporary prison camp in and around the cathedral of Chartres.

The human is deeper than a mass ideology, certainly deeper than the isolated individual ; ;

Although Mr. Brown was not himself its inventor ( it was a French idea ), it is typical that his intuition first conceived the importance of mass producing this basic tool for general use.

As mass dealer and distributor organizations grow in size, there is every reason to expect them to try to share in the manufacturer's as well as the distributor's profits -- which is, in effect, what the sale of private brands tends to do.

This calculation results in an enthalpy rise which is somewhat high because it assumes a mass flow equally distributed over the plug cross section whereas in reality the mass velocity is expected to be smaller in the regions of higher temperatures.

Note that the mass threshold is four times that of 1958 Alpha and that the flux is one fifth as large.

With detectors sensitive to three mass intervals and based on a few counts, the second and third Russian space probes indicate that the flux of the smallest particles detected is less than that of larger ones.

The threshold mass is derived from the momentum threshold with the assumption of a mean impact velocity of Af in the U.S. work and Af in the U.S.S.R. work.

However, the conversion from mass to size is unreliable, since many photographic meteors give evidence of a fluffy, loosely bound meteorite structure with densities as low as Af.

if a substantial fraction of the dust is orbiting about the Earth, only about one third the above-mentioned average velocity should be used in deriving the mass.

The radius is calculated from the mass by assuming spheres of density Af except for the smallest particles, which must have a higher mass density to remain in the solar system in the presence of solar-radiation pressure.

It is assumed that the flux values increase by a factor of 2.512 per magnitude, in accordance with the opinion that the total mass flux in each unit range in magnitude is constant.

Note that the mass scale is one to two orders of magnitude greater than some previously used ; ;

After the team had developed a method of purifying penicillin to an effective first stable form in 1940, several clinical trials ensued, and their amazing success inspired the team to develop methods for mass production and mass distribution in 1945.

A biological weapon is useful to terrorists mainly as a method of creating mass panic and disruption to a state or a country.

This method was first tried on a mass scale during the Bangladesh Liberation War, and was found to have much success.

1520 – 1591 ), father of Galileo and the inventor of monody, made use of the method in successfully solving musical problems, firstly, of tuning such as the relationship of pitch to string tension and mass in stringed instruments, and to volume of air in wind instruments ; and secondly to composition, by his various suggestions to composers in his Dialogo della musica antica e moderna ( Florence, 1581 ).

The initial extermination method of shooting people in burial pits proved logistically and psychologically inefficient, so in late 1941, the Nazis established camps specifically for mass extermination via gas chambers.

Steel is often cited as the first of several new areas for industrial mass-production, which are said to characterise a " Second Industrial Revolution ", beginning around 1850, although a method for mass manufacture of steel was not invented until the 1860s, when Sir Henry Bessemer invented a new furnace which could convert wrought iron into steel in large quantities.

A spacecraft traveling from Earth to Mars via this method will arrive near Mars orbit in approximately 8. 5 months, but because the orbital velocity is greater when closer to the center of mass ( i. e. the Sun ) and slower when farther from the center, the spacecraft will be traveling quite slowly and a small application of thrust is all that is needed to put it into a circular obit around Mars.

The first method relies on differences in the particles ' intrinsic physical properties, such as mass, electric charge, and spin.

Greenberg first called this method " mass comparison " in an article in 1954 ( reprinted in Greenberg 1955 ).

Their objection is methodological: if mass comparison is not a valid method, it cannot be expected to successfully have brought order out of the chaos of African languages.

Specialists find extensive inaccuracies in Greenberg ’ s examples and they reject his method of multilateral ( or mass ) comparison upon which the classification is based.

First, the radiocarbon dating method, invented in 1949, had, by the 1970s, become sufficiently inexpensive to be applied on a mass scale.

These elements are created in quantities on the atomic scale and no method of mass creation has been found.

The most effective method to distinguish walking from running is to measure the height of a person's center of mass using motion capture or a force plate at midstance.

This method of marketing to an extremely expansive user-base while maintaining the idea that the product was made for each individual " the best of all possible worlds — mass marketing and personal differentiation ".

This method is a form of mass spectrometry, and is sometimes referred to by that name.

The method of accelerating the ions varies, but all designs take advantage of the charge / mass ratio of the ions.

A mass driver or electromagnetic catapult is a proposed method of non-rocket spacelaunch which would use a linear motor to accelerate and catapult payloads up to high speeds.

This concept, called a laser-pushed lightsail, was analyzed by physicist Robert L. Forward in 1989 as a method of Interstellar travel that would avoid extremely high mass ratios by not carrying fuel.

An early champion of the electromagnetic separation method to enrich uranium and increase its percentage of fissile U-235, Lawrence manufactured his magnetic calutrons — specialized forms of mass spectrometers — for the massive isotope separation plants in Oak Ridge, Tennessee.

Telecommunications is a method of communication ( e. g., for sports broadcasting, mass media, journalism, etc .).