When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. List of human positions - Wikipedia

   en.wikipedia.org/wiki/List_of_human_positions

   When in lying position, the body may assume a great variety of shapes and positions. The following are the basic recognized positions: Supine position: lying on the back with the face up; Prone position: lying on the chest with the face down ("lying down" or "going prone") Lying on either side, with the body straight or bent/curled forward or ...

3. Mass spectrometry - Wikipedia

   en.wikipedia.org/wiki/Mass_spectrometry

   Ion mobility spectrometry-mass spectrometry (IMS/MS or IMMS) is a technique where ions are first separated by drift time through some neutral gas under an applied electrical potential gradient before being introduced into a mass spectrometer. [43] Drift time is a measure of the collisional cross section relative to the charge of the ion.

4. Mass chromatogram - Wikipedia

   en.wikipedia.org/wiki/Mass_chromatogram

   A mass chromatogram is a representation of mass spectrometry data as a chromatogram, where the x-axis represents time and the y-axis represents signal intensity. [1] The source data contains mass information; however, it is not graphically represented in a mass chromatogram in favor of visualizing signal intensity versus time.

5. Fast atom bombardment - Wikipedia

   en.wikipedia.org/wiki/Fast_atom_bombardment

   When a beam of high energy ions is used instead of atoms (as in secondary ion mass spectrometry), the method is known as liquid secondary ion mass spectrometry (LSIMS). [ 5 ] [ 6 ] [ 7 ] In FAB and LSIMS, the material to be analyzed is mixed with a non-volatile chemical protection environment, called a matrix , and is bombarded under vacuum ...

6. Lying (position) - Wikipedia

   en.wikipedia.org/wiki/Lying_(position)

   Supine: lying on the back on the ground with the face up. Prone: lying on the chest with the face down ("lying down" or "going prone"). See also "Prostration". Lying on either side, with the body straight or bent/curled forward or backward. The fetal position is lying or sitting curled, with limbs close to the torso and the head close to the knees.

7. Quadrupole mass analyzer - Wikipedia

   en.wikipedia.org/wiki/Quadrupole_mass_analyzer

   A variant of the quadrupole mass analyzer called the monopole was invented by von Zahn which operates with two electrodes and generates one quarter of the quadrupole field. [12] It has one circular electrode and one V-shaped electrode. The performance is, however, lower than that of a quadrupole mass analyzer.

8. Mass (mass spectrometry) - Wikipedia

   en.wikipedia.org/wiki/Mass_(mass_spectrometry)

   The mass defect used in nuclear physics is different from its use in mass spectrometry. In nuclear physics, the mass defect is the difference in the mass of a composite particle and the sum of the masses of its component parts. In mass spectrometry the mass defect is defined as the difference between the exact mass and the nearest integer mass.

9. Mass spectrum - Wikipedia

   en.wikipedia.org/wiki/Mass_spectrum

   A mass spectrum is a histogram plot of intensity vs. mass-to-charge ratio (m/z) in a chemical sample, [1] usually acquired using an instrument called a mass spectrometer. Not all mass spectra of a given substance are the same; for example, some mass spectrometers break the analyte molecules into fragments ; others observe the intact molecular ...