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  • 2005-2009  (2)
  • 1970-1974  (2)
  • 1
    Online Resource
    Online Resource
    Hamburg : DESY
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online-Ressource (17 S., 293 KB) , graph. Darst.
    Edition: v1, 29 Nov 2007
    Series Statement: DESY 07,189
    Language: English
    Note: Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Auch als gedr. Ausg. vorhanden , Systemvoraussetzungen: Acrobat reader.
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  • 2
    Online Resource
    Online Resource
    Kent :Elsevier Science & Technology,
    Keywords: Physics. ; Electronic books.
    Description / Table of Contents: Physics for O.N.C. Courses is a textbook that aims to serve the specific needs of science and engineering students at Ordinary National Certificate (ONC) level in physics. Topics covered range from surface tension and viscosity to gas laws and the specific heats of gases, sources of sound and sound waves, and spherical mirrors. Lenses, the eye, refraction at plane surfaces, and dispersion of light are also discussed. This book is comprised of 27 chapters and opens with a review of some basic principles and concepts in physics such as mass, force, and weight; work, energy, and power; states of matter; density and specific gravity; and pressure and diffusion. The reader is then introduced to surface tension, viscosity, the nature of heat, and elementary thermometry. Thermal expansion, heat quantity and its measurement, and properties of gases are also discussed, along with thermal radiation and wave motion. The remaining chapters focus on vapors and vapor pressure; thermal conductivity; vibrations of strings and rods; frequency and velocity of sound; sound intensity and the Doppler effect; and elementary principles of geometric optics. The final chapter is devoted to the fundamentals of atomic and radiation physics. This monograph will be a valuable resource for physicists, physics teachers, and science and engineering students at ONC level in physics.
    Type of Medium: Online Resource
    Pages: 1 online resource (551 pages)
    Edition: 1st ed.
    ISBN: 9781483136868
    DDC: 530
    Language: English
    Note: Front Cover -- Physics for O.N.C. Courses -- Copyright Page -- Table of Contents -- Preface -- Chapter 1. Mechanics: A Review of Some Basic Principles -- 1.1. Mass, Force and Weight -- 1.2. Work, Energy and Power -- 1.3. The States of Matter -- 1.4. Density and Specific Gravity -- 1.5. Pressure -- 1.6. Diffusion -- Exercises -- Chapter 2. Surface Tension -- 2.1. The Nature of Surface Tension -- 2.2. Quantitative Measure of Surface Tension -- 2.3. Angle of Contact -- 2.4. Pressure Change across Curved Liquid Surface -- 2.5. Rise of Liquids in Capillary Tubes -- 2.6. Experimental Determination of Surface Tension -- Exercises -- Chapter 3. Viscosity -- 3.1. Laminar Flow. Coefficient of Viscosity -- 3.2. Laminar Flow through Tubes. Poiseuille's Formula -- 3.3. Stokes' Law -- 3.4. Viscometers -- 3.5. Viscosity and Lubrication -- 3.6. Turbulence. Critical Velocity -- Exercises -- Chapter 4. The Nature of Heat -- 4.1. Heat and Temperature -- 4.2. Equivalence of Heat and Energy -- 4.3. Radiant Heat -- Chapter 5. Elementary Thermometry -- 5.1. The Liquid-in-glass Thermometer -- 5.2. The Constant-pressure Gas Thermometer -- 5.3. The Constant-volume Gas Thermometer -- 5.4. The Platinum-resistance Thermometer -- 5.5. Thermoelectric Thermometers -- Exercises -- Chapter 6. Thermal Expansion -- 6.1. Introduction -- 6.2. The Linear Expansion of Solids -- 6.3. Experimental Determination of Coefficients of Linear Expansion -- 6.4. Surface Expansion of Solids-Area or Superficial Expansion Coefficient -- 6.5. Volume or Cubical Expansion of Solids -- 6.6. The Expansion of Liquids -- 6.7. Experimental Determination of the Coefficient of Expansion for Liquids -- 6.8. Thermostats -- Exercises -- Chapter 7. The Measurement of Heat Quantity -- 7.1. Specific Heat -- 7.2. The Experimental Determination of Specific Heats. Calorimetry -- 7.3. Latent Heat. , 7.4. Calorific Value of Fuels. Fuel Calorimetry -- Exercises -- Chapter 8. Gases (I) -- 8.1. The Gas Laws -- 8.2. The Absolute Temperature Scale. The Perfect Gas Equation -- 8.3. Measurement of αp by a Simple Method (Verification of Charles' Law) -- 8.4. The Kinetic Theory of Gases -- Exercises -- Chapter 9. Gases (II) -- 9.1. The Specific Heats of Gases -- 9.2. The Experimental Determination of cp and cv -- 9.3. The First Law of Thermodynamics -- 9.4. Isothermal and Adiabatic Changes -- 9.5. Relationship between Pressure, Volume and Temperature for Adiabatic Changes -- 9.6. Kinetic Theory and the Ratio of Specific Heats -- Exercises -- Chapter 10. Vapours and Vapour Pressure -- 10.1. Evaporation -- 10.2. Vapour Pressure. Properties of Vapours -- 10.3. Variation of s.v.p. with Temperature -- 10.4. Gases and Vapours. The Critical Temperature -- 10.5. Dalton's Law of Partial Pressures -- 10.6. Relative Humidity -- 10.7. Hygrometers -- Exercises -- Chapter 11. Thermal Conductivity -- 11.1. The Transmission of Heat -- 11.2. The Coefficient of Thermal Conductivity -- 11.3. Experimental Determination of Conductivity Coefficients -- 11.4. Conduction and the Kinetic Theory of Matter -- Exercises -- Chapter 12. Wave Motion -- 12.1. Vibrations and Waves. Basic Definitions -- 12.2. Transverse and Longitudinal Waves -- 12.3. Equation of a Plane, Progressive s.h. Wave -- 12.4. General Properties of Wave Motion -- Exercises -- Chapter 13. Sources of Sound and Sound Waves -- 13.1. Characteristics of Sounds -- 13.2. Musical Intervals. Harmonics and Overtones -- 13.3. Sound Waves -- 13.4. Stationary Waves -- 13.5. Vibration of Air in Pipes -- 13.6. Measurement of Wavelength and Velocity of Sound in a Pipe by Resonance Tube Method -- Exercises -- Chapter 14. Vibrations of Strings and Rods -- 14.1. Transverse Vibrations of Strings. , 14.2. Longitudinal Vibrations in Solids -- Exercises -- Chapter 15. The Measurement of Frequency and Velocity of Sound -- 15.1. The Absolute Determination of Frequency -- 15.2. The Combination of Two Simple Harmonic Vibrations at Right Angles -- 15.3. Measurement of the Velocity of Sound -- Exercises -- Chapter 16. Measurement of Sound Intensity. Recording and Reproduction. The Doppler Effect -- 16.1. Measurement of Sound Intensity -- 16.2. The Recording and Reproduction of Sound -- 16.3. The Acoustic Design of Rooms and Auditoria -- 16.4. The Doppler Effect -- Exercises -- Chapter 17. Thermal Radiation -- 17.1. Electromagnetic Radiation -- 17.2. The Electromagnetic Spectrum -- 17.3. The Detection and Measurement of Thermal Radiation -- 17.4. Some General Properties of Thermal Radiation -- 17.5. Emissive Power and Absorptive Power. Kirchhoff's Law -- 17.6. The Black Body. Black-body or Full Radiation -- 17.7. Energy Distribution among Wavelengths. Wien's Law -- 17.8. Pyrometers. The Measurement of High Temperatures -- Exercises -- Chapter 18. Elementary Principles of Geometric Optics -- 18.1. The Rectilinear Propagation of Light -- 18.2. The Reflection of Light -- 18.3. The Refraction of Light -- Exercises -- Chapter 19. Spherical Mirrors -- 19.1. Definition of Terms -- 19.2. The Formation of Images by Spherical Mirrors -- 19.3. Determination of Position and Size of Image. Use of Formula and Scale Drawings -- 19.4. Measurement of Focal Lengths and Radii of Curvature -- 19.5. Spherical Aberration -- 19.6. Uses of Spherical Mirrors -- Exercises -- Chapter 20. Refraction at Plane Surfaces -- 20.1. Real and Apparent Depth -- 20.2. Refraction through Triangular Prisms -- 20.3. Mirages -- 20.4. The Measurements of Refractive Indices -- Exercises -- Chapter 21. Lenses -- 21.1. Definition of Terms -- 21.2. Refraction at a Spherical Surface. , 21.3. Image Formation by Lenses -- 21.4. Measurement of Focal Lengths of Lenses -- 21.5. Measurement of Radius of Curvature of a Lens Surface -Boys' Method -- 21.6. Defects of Lenses -- Exercises -- Chapter 22. The Eye. Defects of Vision and Optical Instruments -- 22.1. Structure of the Eye -- 22.2. The Eye and Vision -- 22.3. Defects of Vision -- 22.4. Microscopes and Telescopes -- 22.5. Cameras and Projectors -- Exercises -- Chapter 23. Dispersion of Light. Spectra and the Spectrometer -- 23.1. The Visible Spectrum -- 23.2. Characteristic Spectra -- 23.3. Angular Dispersion. Dispersive Power -- 23.4. Achromatic Combinations of Prisms -- 23.5. Achromatic Lenses -- 23.6. The Spectrometer -- Exercises -- Chapter 24. The Wave Nature of Light -- 24.1. Huygens' Wave Theory -- 24.2. Diffraction -- 24.3. Interference in Light -- 24.4. Double Refraction and Polarised Light -- Exercises -- Chapter 25. Illumination and Photometry -- 25.1. Luminous Intensity -- 25.2. Luminous Flux -- 25.3. Illumination -- 25.4. Lambert's Cosine Law of Emission -- Luminance -- the Lambert -- 25.5. Photometers -- 25.6. Photoelectric Photometry -- Exercises -- Chapter 26. Measurement of the Speed of Light -- 26.1. Early Methods -- 26.2. Fizeau's Method -- 26.3. Foucault's Method -- 26.4. Michelson's Rotating Octagonal Prism Method -- 26.5. The Kerr Cell Method -- 26.6. Significance of the Value of c -- 26.7. The Doppler Effect in Light -- Exercise -- Chapter 27. Fundamentals of Atomic and Radiation Physics -- 27.1. Atomic Structure and the Periodic Table -- 27.2. Atomic Spectra -- 27.3. X-rays -- 27.4. Radioactivity -- Exercises -- INDEX.
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 5 (1970), S. 0 
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary. Pea puree of pH 6.95 and pH 8.45 was heat processed in thermal death-time tubes at temperatures between 115.6°C and 148.9°C to a process value of F0= 6.0. Chlorophyll pigments, Hunterlab colour indices and pH were determined before and after high temperature-short time (H.T.S.T.) processing and during storage for 18 months at 20°C, 2.8°C, and −23.3°C.Highly significant correlations were found between per cent conversion of chlorophylls to pheophytins and objective colour indices derived from tristimulus measurements on stored pea puree. the degree of chlorophyll conversion, and hence puree colour, were both markedly affected by process temperature, product pH, storage time and storage temperature, but long-term storage stability was achieved only by combinations of two or more variables.Changes in pH of processed and stored puree were directly related to changes in pigments and colour, and it appears that pH control during processing and storage offers the most likely means of colour and pigment retention in heat processed chlorophyll-containing foods.
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 2019-09-23
    Description: The Dalrymple Trough marks part of the transform plate boundary between India and Arabia in the northern Arabian Sea. Oblique extension is presently active across this portion of the boundary at a rate of a few millimetres per year, and seismic reflection profiles across the trough confirm that it is an extensional structure. We present new swath bathymetric and wide-angle seismic data from the trough. The bathymetric data show that the trough is bounded by a single, steep, 3-km-high scarp to the southeast and a series of smaller, en-echelon scarps to the northwest. Wide-angle seismic data show that a typical oceanic crustal velocity structure is present to the northwest, with a crustal thickness of ~ 6 km. There is an abrupt change in crustal thickness and velocity structure at the northwestern edge of the trough, and the trough itself is underlain by 12-km-thick crust interpreted as thinned continental crust. Therefore we infer that Dalrymple Trough is an unusual obliquely extending plate boundary at which continental crust and oceanic crust are juxtaposed. The extensional deformation is focused on a single major fault in the continental lithosphere, but distributed over a region ~ 60 km wide in the oceanic lithosphere
    Type: Article , PeerReviewed
    Format: text
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