CA927623A - Densitometer having an analog computer for calculating a fraction of the total area under a curve - Google Patents
Densitometer having an analog computer for calculating a fraction of the total area under a curveInfo
- Publication number
- CA927623A CA927623A CA109750A CA109750A CA927623A CA 927623 A CA927623 A CA 927623A CA 109750 A CA109750 A CA 109750A CA 109750 A CA109750 A CA 109750A CA 927623 A CA927623 A CA 927623A
- Authority
- CA
- Canada
- Prior art keywords
- densitometer
- fraction
- curve
- calculating
- total area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
- G01N21/5907—Densitometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44717—Arrangements for investigating the separated zones, e.g. localising zones
- G01N27/44721—Arrangements for investigating the separated zones, e.g. localising zones by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/90—Plate chromatography, e.g. thin layer or paper chromatography
- G01N30/95—Detectors specially adapted therefor; Signal analysis
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2706770A | 1970-04-09 | 1970-04-09 | |
US10714071A | 1971-01-18 | 1971-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA927623A true CA927623A (en) | 1973-06-05 |
Family
ID=26701999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA109750A Expired CA927623A (en) | 1970-04-09 | 1971-04-06 | Densitometer having an analog computer for calculating a fraction of the total area under a curve |
Country Status (5)
Country | Link |
---|---|
US (1) | US3706877A (de) |
CA (1) | CA927623A (de) |
DE (1) | DE2117385A1 (de) |
FR (1) | FR2089411A5 (de) |
GB (1) | GB1346486A (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3784789A (en) * | 1972-06-22 | 1974-01-08 | Transidyne Gen Corp | Fraction computer for multi-component trace |
US3828173A (en) * | 1972-08-01 | 1974-08-06 | Dickey John Corp | Grain analysis computer circuit |
US3767899A (en) * | 1972-08-07 | 1973-10-23 | Beckman Instruments Inc | Digital integrator for evaluating operator selected portions of analog chart traces |
GB1471143A (en) * | 1973-04-09 | 1977-04-21 | Joyce Loebl Ltd | Automatic graphing apparatus |
US3916176A (en) * | 1973-08-30 | 1975-10-28 | Imant Karlovich Alien | Method for classifying supposedly cancerous cytologic preparations and apparatus for identifying supposedly cancerous cytologic preparations effecting this method |
US3842422A (en) * | 1973-10-12 | 1974-10-15 | Transidyne Gen Corp | Method and apparatus for recording signals |
US3919530A (en) * | 1974-04-10 | 1975-11-11 | George Chiwo Cheng | Color information leukocytes analysis system |
US4005434A (en) * | 1975-03-24 | 1977-01-25 | Helena Laboratories Corporation | Method and apparatus for graphic densitometer display |
US4116565A (en) * | 1977-05-24 | 1978-09-26 | Corning Glass Works | Electrophoretic analyzer with automatic reference circuit |
US4118781A (en) * | 1977-05-24 | 1978-10-03 | Corning Glass Works | Valley sensor for an electrophoretic analyzer |
US4097735A (en) * | 1977-05-24 | 1978-06-27 | Corning Glass Works | Testing the operation of a recording fluorometer/densitometer |
US4130824A (en) * | 1977-05-24 | 1978-12-19 | Corning Glass Works | Recording analyzer for electrophoretic samples |
IT1086463B (it) * | 1977-09-06 | 1985-05-28 | Fisauli Francesco | Densitometro per la determinazione quantitativa di frazioni proteiche separate per via elettroforetica,particolarmente per la diagnosi clinica |
US4242730A (en) * | 1979-03-09 | 1980-12-30 | Helena Laboratories Corporation | Single scan microprocessor-controlled densitometer |
JPS5942683Y2 (ja) * | 1979-06-08 | 1984-12-14 | オリンパス光学工業株式会社 | デンシトメ−タ− |
US4352557A (en) * | 1979-10-20 | 1982-10-05 | Ernst Leitz Wetzlar Gmbh | Determining a test value corresponding to blood subsidence |
GB2068537B (en) * | 1980-02-04 | 1984-11-14 | Energy Conversion Devices Inc | Examining biological materials |
JPS5917142A (ja) * | 1982-07-20 | 1984-01-28 | Olympus Optical Co Ltd | デンシトグラムの記録方法 |
US4720788A (en) * | 1984-06-20 | 1988-01-19 | Helena Laboratories Corporation | Diagnostic densitometer |
US4926356A (en) * | 1988-02-29 | 1990-05-15 | The Boeing Company | Test apparatus for measuring heat release of certain materials |
JP2738966B2 (ja) * | 1989-12-21 | 1998-04-08 | オリンパス光学工業株式会社 | 電気泳動装置 |
US6733645B1 (en) | 2000-04-18 | 2004-05-11 | Caliper Technologies Corp. | Total analyte quantitation |
US7546048B2 (en) * | 2006-01-12 | 2009-06-09 | Sun Chemical Corporation | Method for determining ink usage efficiency in commercial printing processes using pigments and quantitative tests |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2732504A (en) * | 1948-09-28 | 1956-01-24 | steele | |
US2834247A (en) * | 1955-01-26 | 1958-05-13 | Beckman Instruments Inc | Optical density analyzing apparatus |
US3187168A (en) * | 1960-02-23 | 1965-06-01 | Beckman Instruments Inc | Integrator |
US3098689A (en) * | 1960-12-13 | 1963-07-23 | Union Carbide Corp | Integral recording |
US3259733A (en) * | 1961-02-24 | 1966-07-05 | Chevron Res | Automatic integrator for chromatograph records |
US3185820A (en) * | 1962-02-12 | 1965-05-25 | Infotronics Corp | Integrator and recorder apparatus |
US3251055A (en) * | 1963-08-26 | 1966-05-10 | Gen Precision Inc | Solid state analog to digital display scanner |
US3335408A (en) * | 1964-04-15 | 1967-08-08 | Itek Corp | Apparatus for data processing |
-
1971
- 1971-01-18 US US107140A patent/US3706877A/en not_active Expired - Lifetime
- 1971-04-06 CA CA109750A patent/CA927623A/en not_active Expired
- 1971-04-08 DE DE19712117385 patent/DE2117385A1/de active Pending
- 1971-04-08 FR FR7112518A patent/FR2089411A5/fr not_active Expired
- 1971-04-19 GB GB2649971*A patent/GB1346486A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3706877A (en) | 1972-12-19 |
FR2089411A5 (de) | 1972-01-07 |
DE2117385A1 (de) | 1971-11-04 |
GB1346486A (en) | 1974-02-13 |
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