4,086 research outputs found

    Applications Technology Satellite and Communications Technology Satellite user experiments for 1967-1980 reference book. Volume 4: Abstracts

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    The important user experiments conducted during the fourteen year period from 1966 to 1980 are summarized. A description of each of the satellites and a brief summary of each user experiment is presented. A cross index of user experiments sorted by various parameters and a listing of keywords versus experiment number is included. The experiments are grouped by type of service offered; for example, education, health services, and data transmission. A bibliography of reports by accession number and by author is also presented. User viewpoints of the systems are presented

    Applications Technology Satellite and Communications Technology Satellite user experiments for 1967 - 1980 reference book, volume 1

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    A description of each of the satellites is given and a brief summary of each user experiment is presented. A Cross Index of User Experiments sorted by various parameters and a listing of keywords versus Experiment Number are presented

    Compendium of Applications Technology Satellite user experiments

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    The achievements of the user experiments performed with ATS satellites from 1967 to 1973 are summarized. Included are fixed and mobile point to point communications experiments involving voice, teletype and facsimile transmissions. Particular emphasis is given to the Alaska and Hawaii satellite communications experiments. The use of the ATS satellites for ranging and position fixing of ships and aircraft is also covered. The structure and operating characteristics of the various ATS satellite are briefly described

    Developmental expression of the arabidopsis cyclin gene cyc1At.

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    Continuation of the compendium of applications technology satellite and communications technology satellite user experiments 1967-1977, volume 2

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    Approximately 453 reports, papers, and articles catalogued into an information retrieval system, covering communications experiments and demonstrations conducted, utilizing the Communications Technology Satellite and the Applications Technology Satellites 1, 3, 5, and 6 are listed

    Application of nuclear volume measurements to comprehend the cell cycle in root-knot nematode-induced giant cells.

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    Made available in DSpace on 2017-08-20T10:40:09Z (GMT). No. of bitstreams: 1 fpls0800961.pdf: 6060991 bytes, checksum: de09cc3d9010093292805dc9ae37534a (MD5) Previous issue date: 2017-08-1

    Diffractive triangulation of radiative point sources

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    We describe a general method to determine the location of a point source of waves relative to a twodimensional single-crystalline active pixel detector. Based on the inherent structural sensitivity of crystalline sensor materials, characteristic detector diffraction patterns can be used to triangulate the location of a wave emitter. The principle described here can be applied to various types of waves, provided that the detector elements are suitably structured. As a prototypical practical application of the general detection principle, a digital hybrid pixel detector is used to localize a source of electrons for Kikuchi diffraction pattern measurements in the scanning electron microscope. This approach provides a promising alternative method to calibrate Kikuchi patterns for accurate measurements of microstructural crystal orientations, strains, and phase distributions

    Testing the proposed link between cosmic rays and cloud cover

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    A decrease in the globally averaged low level cloud cover, deduced from the ISCCP infra red data, as the cosmic ray intensity decreased during the solar cycle 22 was observed by two groups. The groups went on to hypothesise that the decrease in ionization due to cosmic rays causes the decrease in cloud cover, thereby explaining a large part of the presently observed global warming. We have examined this hypothesis to look for evidence to corroborate it. None has been found and so our conclusions are to doubt it. From the absence of corroborative evidence, we estimate that less than 23%, at the 95% confidence level, of the 11-year cycle change in the globally averaged cloud cover observed in solar cycle 22 is due to the change in the rate of ionization from the solar modulation of cosmic rays

    Exploiting cell cycle inhibitor genes of the KRP family to control root-knot nematode induced feeding sites in plants.

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    Made available in DSpace on 2018-08-11T00:42:06Z (GMT). No. of bitstreams: 1 Coelhoetal2017PlantCellampEnvironment.pdf: 5492267 bytes, checksum: 547162c264fe8e6c301bf52439d7d29d (MD5) Previous issue date: 2017-08-11bitstream/item/162650/1/Coelho-et-al-2017-Plant-Cell-amp-Environment.pd

    Phenomenology of iron-assisted ion beam pattern formation on Si(001)

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    Pattern formation on Si(001) through 2 keV Kr+ ion beam erosion of Si(001) at an incident angle of # = 30° and in the presence of sputter codeposition or co-evaporation of Fe is investigated by using in situ scanning tunneling microscopy, ex situ atomic force microscopy and electron microscopy. The phenomenology of pattern formation is presented, and experiments are conducted to rule out or determine the processes of relevance in ion beam pattern formation on Si(001) with impurities. Special attention is given to the determination of morphological phase boundaries and their origin. Height fluctuations, local flux variations, induced chemical inhomogeneities, silicide formation and ensuing composition-dependent sputtering are found to be of relevance for pattern formation
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