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  • 1
    Electronic Resource
    Electronic Resource
    Determination of Beryllium in Titanium Alloys (1956)
    s.l. : American Chemical Society
    Analytical chemistry 28 (1956), S. 1728-1730 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60119a024
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  • 2
    Electronic Resource
    Electronic Resource
    A new method to measure the oscillation of a cylindrical cantilever: "The laser reflection detection system" (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 1689-1694 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new optical detection system for measuring the oscillation of cylindrical cantilevers has been designed. A laser beam is directed perpendicularly to the oscillating plane and is focused on the curved surface of the vibrating probe. The surface reflects the light and a second lens refocuses it onto a two-segment photodiode. The sensitivity of this method lies in the fact that a small displacement of the probe produces a large angular deflection of the reflected laser. Applications of this new system are presented in order to demonstrate its reliability, accuracy, sensitivity, and the possible use in a shear force microscope. All the results are finally analyzed by modeling the motion of the cantilevers using harmonic oscillator theory and the continuous model for oscillating bars. The agreement between experimental data and models is well inside the experimental errors confirming the possibility of using this system to accurately study the dynamics of cylindrical cantilevers. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150520
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  • 3
    Electronic Resource
    Electronic Resource
    THE USE OF AIRBORNE AUXILIARY DATA IN THE RIGOROUS LEAST SQUARES ADJUSTMENT OF A BLOCK OF AERIAL TRIANGULATION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1969), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The problem of incorporating airborne auxiliary data into an aerial triangulation block adjustment is considered. The conclusion is reached that this problem can be most readily solved by the use of a fully rigorous adjustment method. The first order adjustment equations for all types of airborne auxiliary control are developed and the method of incorporating these equations into the block solution is demonstrated. The general computing problems of the aerial triangulation block adjustment are briefly discussed and a method outlined for the incorporation of tie strips, at any angle across the block, into the adjustment without unduly increasing the storage requirements for the solution. The problem of correctly weighting the different types of available data is discussed. The paper concludes with a demonstration of the improved accuracy possible if precise aerial triangulation data are combined with apparently crude absolute airborne data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1969.tb00953.x
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  • 4
    Electronic Resource
    Electronic Resource
    Studying topography and sub-surface structure of 8CB liquid crystal films with shear-force microscopy (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 3143-3146 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Scanning shear-force microscopy, which is usually employed to track scanning near-field optical microscopy probes across samples, was used to observe the sub-surface smectic layer structure through the thickness of a film of the alkyl cyanobiphenyl liquid crystal 8CB on a highly oriented pyrolytic graphite substrate from force-distance measurements. With the noncontact imaging shear-force microscopy supplies, it was possible to follow, in the topography, the movement of a monolayer of the 8CB molecules. This has enabled the diffusion of molecules in a precursor film of 8CB to be observed without significantly disrupting the free liquid surface. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363252
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  • 5
    Electronic Resource
    Electronic Resource
    Observation of phase transitions in an antiferroelectric liquid crystal investigated by scanning tunneling microscopy (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 122-126 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Here, we present scanning tunneling microscopy images of antiferroelectric liquid-crystalline (AFELC) molecules observed at different elevated temperatures corresponding to different bulk mesophases of the material. These images show evidence for a commensurate changing of the molecular arrangement on the graphite substrate as a function of temperature. Furthermore, a nontrivial angular relationship between the graphite substrate and the AFELC domains was obtained, indicating that there may be a stronger, polar (electrostatic) interaction between the AFELC molecules than between the adsorbate and the substrate. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359378
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  • 6
    Electronic Resource
    Electronic Resource
    Volumetric Determination of Magnesium in Titanium (1958)
    s.l. : American Chemical Society
    Analytical chemistry 30 (1958), S. 361-363 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60135a014
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  • 7
    Electronic Resource
    Electronic Resource
    Gravimetric Determination of Zirconium in Titanium (1959)
    s.l. : American Chemical Society
    Analytical chemistry 31 (1959), S. 252-254 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60146a029
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  • 8
    Electronic Resource
    Electronic Resource
    Observation of molecular layering in a confined water film and study of the layers viscoelastic properties (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 300-302 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A transverse dynamic force microscope, more commonly known as shear force microscope, has been used to investigate confined water films under shear. A cylindrically tapered glass probe was mounted perpendicularly to the sample surface. Pure water was confined between the probe and a freshly cleaved mica surface and a sinusoidal shear strain was applied by setting the probe into transverse oscillation. Repeated measurements of the probe oscillation amplitude and relative phase lag, at different tip-sample separations, exhibited a clear step-like behavior. The periodicity, recorded over several curves, ranged between 2.4 and 2.9 Å, which is similar to the diameter of the water molecule. The in-phase (elastic) and the out-of-phase (viscous) stress response of the confined water film was evaluated (from the experimental data) by assuming a linear viscoelastic behavior. Finally, by modeling the water film with the Maxwell mechanical model, the values for the shear viscosity and shear rigidity were obtained. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1339997
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  • 9
    Electronic Resource
    Electronic Resource
    THE THEORY OF THE ANALYTICAL SOLUTION OF THE STEREOGRAM (1968)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1968), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The theory of the solution of the stereogram is developed from the condition that the vector triangle, formed by the base-line and the two rays from the perspective centre to a common model point, shall be in equilibrium. Using this approach the unique definition of a point in the model follows naturally from the solution of the relative orientation problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1968.tb00928.x
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  • 10
    Electronic Resource
    Electronic Resource
    METHODS OF SOLUTION OF THE ADJUSTMENT OF A BLOCK OF AERIAL TRIANGULATION (1963)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 4 (1963), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: This paper sets out the problem of the least-square adjustment of a block of aerial triangulation by simultaneous solution of the normal equations and goes on to discuss two possible methods of solving the normal equations by an iterative process. In conclusion the article examines the advantages of an approximate iterative solution based on the peculiar regularity of an aerial triangulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1963.tb00359.x
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