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  • 2010-2014  (4,904)
  • 2000-2004  (815)
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  • 1
    Call number: S 99.0139(240)
    In: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover
    Type of Medium: Series available for loan
    Pages: x, 157 S.
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover 240
    Classification:
    Measurement
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Berlin : Springer
    Call number: 6/M 16.89656
    Description / Table of Contents: Geodetic datum (including coordinate datum, height datum, depth datum, gravimetry datum) and geodetic systems (including geodetic coordinate system, plane coordinate system, height system, gravimetry system) are the common foundations for every aspect of geomatics. This course book focuses on geodetic datum and geodetic systems, and describes the basic theories, techniques, methods of geodesy. The main themes include: the various techniques of geodetic data acquisition, geodetic datum and geodetic control networks, geoid and height systems, reference ellipsoid and geodetic coordinate systems, Gaussian projection and Gaussian plan coordinates and the establishment of geodetic coordinate systems. The framework of this book is based on several decades of lecture noted and the contents are developed systematically for a complete introduction to the geodetic foundations of geomatics.
    Description / Table of Contents: REVIEW: "The present work integrates both classical materials and modern developments in geodesy, it describes pure theoretical approaches and recent practical applications. The book can be used as a general textbook for undergraduates studying geomatics and survejing and mapping in higher education institutions. For technicians who are engaged in geomatic and surveying engineering, the book is strongly recommended as a basic and useful reference guide."
    Type of Medium: Monograph available for loan
    Pages: XXI, 401 S.
    ISBN: 9783642412455 , 9783642412448
    Classification:
    Geodesy
    Language: English
    Note: Introduction -- Geodetic Data Collection Techniques -- Geodetic datum and Geodetic Control Network -- Geoid and Height System -- Reference Ellipsoid and Geodetic Coordinate System -- Gauss and UTM Conformal Projection and Plane Rectangular Coordinate System -- Establishment of Geodetic Coordinate System
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  • 3
    Publication Date: 2012-10-01
    Print ISSN: 0925-4005
    Electronic ISSN: 1873-3077
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by Elsevier
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  • 4
    Publication Date: 2014-09-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 5
    Publication Date: 2022-05-26
    Description: Author Posting. © American Geophysical Union, 2011. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 38 (2011): L05601, doi:10.1029/2010GL046626.
    Description: The analysis of an updated monthly climatology of observed temperature and salinity from the U.S. Navy Generalized Digital Environment Model reveals a basin-scale cyclonic circulation over the deep South China Sea (SCS). The cyclonic circulation lies from about 2400 m to the bottom. The boundary current transport of the cyclonic circulation is around 3.0 Sv. Our results suggest that the cyclonic circulation is mainly forced by the Luzon overflow, with bottom topography playing an important role. The structures of potential temperature, salinity, and potential density in the deep SCS are consistent with the existence of the cyclonic circulation. Specifically, low salinity water is found in the interior region west of Luzon Island, and surrounded by saline Pacific water in boundary current regions to the north, west and southwest. Our results show the potential density distribution and the corresponding cyclonic circulation in deep SCS are primarily controlled by salinity variations in the deep basin.
    Description: G. Wang was supported by the National Basic Research Program (2007CB816003) and the National Natural Science Foundation of China (40976017, 40730843); S.‐P. Xie by the US National Foundation (NSF), the Changjiang Scholar and Qianren Programs; T. Qu by NSF (OCE10‐29704).
    Keywords: Deep South China Sea circulation ; Boundary current
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 72 (2001), S. 3380-3385 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new octopole electrode design improves the particle trapping stability of an electrodynamic balance (EDB) and allows one to make three-dimensional force measurements on a trapped particle. A conventional double-ring EDB was modified by splitting each ring into four equal segments that are electrically independent. Three dc sources were combined such that eight potentials were applied to the eight segments of the electrodes. An additional ac voltage was superimposed on each ring segment as in a conventional double-ring EDB. The resulting electric field has dc components in the x, y, and z directions, which can be controlled independently by the three dc supplies. The z component is used to balance and measure vertical forces such as gravity, radiation pressure, or phoretic forces. The x and y fields can be used to suppress lateral oscillations of the trapped particles, and lateral forces on the particle can be measured in terms of the x and y dc voltages. The apparatus and the electric fields are described herein, and the operation of the device is demonstrated for spheres and aggregated particles. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 2641-2648 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial growth of CoSi2 by solid state reaction of Co/a-Si/Ti/Si(100) is investigated. A Ti/a-Si composite interlayer is used to modify the diffusion barrier and influence the epitaxial growth process. The epitaxial quality of the CoSi2 is improved compared to the film grown by Co/Ti/Si reaction. A multielement amorphous layer is formed by a solid-state amorphization reaction at the initial stage of the multilayer reaction. This layer acts as a diffusion barrier, which controls the atomic interdiffusion of Co and Si while limiting the supply of Co atoms. CoSi2 grows as the first phase and the growth interface of the epitaxial CoSi2 is at both the CoSi2/Si and CoSi2/CoSi interfaces. Investigation of the growth kinetics shows that the activation energy of CoSi2 formation is larger than that without an amorphous Si layer. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 1235-1244 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A pulsed excimer laser was used to evaporate targets of boron nitride and titanium nitride in an attempt to produce hard thin films on crystalline silicon substrates. The films were either pure TiN or BN layers, as well as alternating multilayers and mixed layers. Deposition could be assisted by ion bombardment. The films were characterized by Auger electron spectroscopy, Fourier transform infrared spectroscopy (FTIR), and x-ray diffraction. A selection of films was also studied by profilometry in order to determine deposition rate and the type of stress present. The level of stress in TiN films was also a function of the deposition temperature and could be varied with the use of ion bombardment. Amorphous, cubic, and hexagonal BN films were produced and the effect of the stress of the substrate on these layers was investigated. Multilayers were stressed, having alternating layers of nanocrystalline TiN and amorphous BN. Mixtures consisted of nanometer-sized regions of crystalline TiN and sp2 coordinated boron nitride. FTIR spectra and high-resolution transmission electron microscope pictures suggested that in the mixtures, boron nitride planes tended to parallel the surface of the TiN grains. No sign of stress-driven formation of cubic BN was observed in the multilayers nor in the nanosized mixtures, regardless of the stress level present in them; neither was there any sign of titanium borides or other structures that might increase the hardness of the films. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 117 (2002), S. 2592-2598 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Results of the QCICD/6-311++G(3df,3pd) ab initio calculations on the ground state of Ar2H+ are presented. With accurate method and basis sets, the potential energy surface for the ground state was scanned with more than 7000 points, and an analytic global potential energy surface was constructed based on these points. The properties such as the potential minima, the transition state, and the dissociating paths of [Ar–H–Ar]+ were discussed. The influence of the three-body interaction in this system was also investigated, and it is found that a potential based on the two-body additive interaction is not good to represent the Ar2H+ system. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 72 (2001), S. 2717-2723 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We present the use of a near-infrared (IR) laser Raman spectroscopy instrument to measure the concentrations of many important analytes at their clinically relevant levels in the simulated human serum. The Raman signal is generated by a 745 nm diode laser in a disposable waveguide capillary cell that contains a submicroliter sample. The Raman spectrum is acquired from the sample in 10 s. The major error in quantitative Raman spectroscopy caused by the variation in laser power, optical alignment, and capillary cell size from measurement to measurement is eliminated by normalizing the spectrum to the dominant water peak at 3350 cm−1. Concentrations of glucose, acetaminophen, albumin, and other analytes are predicted using partial least squares (PLS) calibration. An effective multiple bandpass-filtering method was developed to enhance the signal of the desired analytes to interfering background ratio for improvement of PLS calibration accuracy. It is demonstrated that the accuracy of predicted concentrations for all analytes in the simulated human serum samples are highly acceptable for clinical diagnosis. The results promise the potential applications of the near-IR Raman instrument in medical practice. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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