descending chromatography

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• Countercurrent chromatography — (CCC) or partition chromatography is a category of chromatography techniques;[1] laboratory techniques for the separation of mixtures, in this case liquid liquid mixtures. Contents 1 Chromatography 2 Techniques …   Wikipedia

• Countercurrent exchange — Counter heat current exchange: Note the gradually declining differential and that the once hot and cold streams exit at the reversed temperature difference; the hotter entering stream becomes the exiting cooler stream and vice versa.… …   Wikipedia

• analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

• mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …   Universalium

• Chromatographic response function — Chromatographic response function, often abbreviated to CRF is a coefficient which characterize in a quantitative manner, the quality of the separation in the result of a chromatography. The CRFs concept have been created during the development… …   Wikipedia

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• Halitosis — ICD 10 R19.6 ICD 9 784.99 DiseasesDB 5603 …   Wikipedia

• Sophora flavescens — S flavescens Scientific classification Kingdom: Plantae …   Wikipedia

• diagnosis — /duy euhg noh sis/, n., pl. diagnoses / seez/. 1. Med. a. the process of determining by examination the nature and circumstances of a diseased condition. b. the decision reached from such an examination. Abbr.: Dx 2. Biol. scientific… …   Universalium

• Distillation — Distiller and Distillery redirect here. For other uses, see Distiller (disambiguation) and Distillery (disambiguation). For other uses, see Distillation (disambiguation). Laboratory display of distillation: 1: A heating device 2: Still pot 3:… …   Wikipedia

• Amobarbital — Drugbox IUPAC name = 5 ethyl 5 (3 methylbutyl) 1,3 diazinane 2,4,6 trione width = 150 CAS number = 57 43 2 ChemSpiderID = 2079 CAS supplemental = 64 43 7 (sodium salt) ATC prefix = N05 ATC suffix = CA02 ATC supplemental = PubChem = 2164 smiles =… …   Wikipedia