| spectrophotometry | Quantitative measurements of concentrations of reagents made by measuring the absorption of visible, ultraviolet or infrared light. (18 Nov 1997) |
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| spectrophotometry, atomic absorption | A highly sensitive technique used to analyze various elements, especially metals, including aluminum, arsenic, beryllium, calcium, copper, iron, lead, and lithium, which are present in trace amounts. The atoms are excited above a ground state by flame vaporization, and the radiation emitted as the molecules return to a ground state is measured in unexcited non-ionised molecules. (12 Dec 1998) |
| spectrophotometry, infrared | Spectrophotometry in the infrared region, usually for the purpose of chemical analysis through measurement of absorption spectra associated with rotational and vibrational energy levels of molecules. (12 Dec 1998) |
| spectrophotometry, ultraviolet | Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example cl2, so2, no2, cs2, ozone, mercury vapor, and various unsaturated compounds. (12 Dec 1998) |
| spectropolarimeter | An instrument for measuring the rotation of the plane of polarised light of specific wavelength upon passage through a solution or translucent solid. Origin: spectro-+ polarimeter (05 Mar 2000) |
| spectroscope | <instrument, physics> An optical instrument for forming and examining spectra (as that of solar light, or those produced by flames in which different substances are volatilized), so as to determine, from the position of the spectral lines, the composition of the substance. Origin: Spectrum + -scope. Source: Websters Dictionary (01 Mar 1998) |
| spectroscopic | Relating to or performed by means of a spectroscope. (05 Mar 2000) |
| spectroscopical | Of or pertaining to a spectroscope, or spectroscopy. Spectroscop"ically. Source: Websters Dictionary (01 Mar 1998) |
| spectroscopist | One who investigates by means of a spectroscope; one skilled in the use of the spectroscope. Source: Websters Dictionary (01 Mar 1998) |
| spectroscopy | <procedure> Spectroscopy is the science of measuring the emission and absorption of different wavelengths (spectra) of visible and non-visible light, this can be done via a spectroscope, which consists of a slit, prism, collimator lens, object lens, and a grating. (09 Oct 1997) |
| spectroscopy, fourier transform infrared | A spectroscopic technique in which a range of wavelengths is presented simultaneously with an interferometer and the spectrum is mathematically derived from the pattern thus obtained. (12 Dec 1998) |
| spectroscopy, mossbauer | A spectroscopic technique which uses the mossbauer effect (inelastic scattering of gamma radiation resulting from interaction with heavy nuclei) to monitor the small variations in the interaction between an atomic nucleus and its environment. Such variations may be induced by changes in temperature, pressure, chemical state, molecular conformation, molecular interaction, or physical site. It is particularly useful for studies of structure-activity relationship in metalloproteins, mobility of heavy metals, and the state of whole tissue and cell membranes. (12 Dec 1998) |
| spectroscopy, near-infrared | A noninvasive technique that uses the differential absorption properties of haemoglobin and myoglobin to evaluate tissue oxygenation and indirectly can measure regional haemodynamics and blood flow. Near-infrared light (nir) can propagate through tissues and at particular wavelengths is differentially absorbed by oxgenated vs. Deoxygenated forms of haemoglobin and myoglobin. Illumination of intact tissue with nir allows qualitative assessment of changes in the tissue concentration of these molecules. The analysis is also used to determine body composition. (12 Dec 1998) |
| spectrum | A charted band of wavelengths of electromagnetic vibrations obtained by refraction and diffraction. By extension, a measurable range of activity, such as the range of bacteria affected by an antibiotic (antibacterial spectrum) or the complete range of manifestations of a disease. (18 Nov 1997) |
| spectrum analysis | The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (12 Dec 1998) |
Synonyms : Agglutination, Sperm, Agglutinations, Sperm, Sperm Agglutinations
Synonyms : Bank, Sperm, Banks, Sperm, Sperm Bank
Synonyms : Capacitation of Spermatozoa, Capacitation, Sperm, Spermatozoa Capacitation
Synonyms : Count, Sperm, Counts, Sperm, Number, Sperm, Numbers, Sperm, Sperm Counts, Sperm Numbers
Synonyms : Head, Sperm, Heads, Sperm, Sperm Heads
| specialism |
the concentration of your efforts on a particular field of study or occupation specialization: the special line of work you have adopted as your career; "his specialization is gastroenterology"
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| spectral |
of or relating to a spectrum; "spectral colors"; "spectral analysis" apparitional: resembling or characteristic of a phantom; "a ghostly face at the window"; "a phantasmal presence in the room"; "spectral emanations"; "spiritual tappings at a seance"
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| spectrograph |
a spectroscope by which spectra can be photographed spectrogram: a photographic record of a spectrum
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| spectinomycin |
an antibiotic used to treat gonorrhea
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| spectroscopic analysis |
spectroscopy: the use of spectroscopes to analyze spectra
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| SPE | an expert who is devoted to one occupation or branch of learning |
|---|---|
| SPE | to a distinctly greater extent or degree than is common |
| SPE | in a special manner |
| SPE | a distinguishing trait |
| SPE | the special line of work you have adopted as your career |
| SPE | a distinguishing trait |
| SPE | an asset of special worth or utility |
| SPE | a store that sells only one kind of merchandise |
| SPE | evolve so as to lead to a new species or develop in a way most suited to the environment, of populations of plants and animals |
| SPE | the evolution of a biological species |
| SPE | coins collectively |
| SPE | a specific kind of something |
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