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  • General Chemistry  (1,165)
  • Inorganic Chemistry  (788)
  • INSTRUMENTATION AND PHOTOGRAPHY  (496)
  • BIOSCIENCES  (417)
  • 1970-1974  (2,866)
  • 1910-1914
  • 1971  (2,866)
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Keywords
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  • 1970-1974  (2,866)
  • 1910-1914
Year
  • 1
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    Toxicology of spacecraft materials (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The procedures for determining the toxicity of products outgassed from spacecraft structures are discussed. The test equipment involved in the tests and the criteria for acceptability are described. The use of animals as the final step in determining toxicity of a spacecraft environment is explained.
    Keywords: BIOSCIENCES
    Type: Conf. on Mater. for Improved Fire Safety; p 207-210
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  • 2
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    The improvement of star positions by photographic methods (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A brief description is given of the new astrometric camera and of the program on which it is being employed. This is the photography of the southern sky so that each star appears on at least four overlapping plates. Sets of star coordinates measured on each plate are combined with a limited set of provisional meridian places to give an accurate set of relative star positions which are independent of the meridian system together with a set of residuals for each plate-star. The technique is based on a simple geometrical model of image formation on photographic plates. Current investigations are concerned with the elimination of sources of systematic deviation from this model.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 199-208
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  • 3
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    An F1 Schmidt satellite camera and the methods of plate measurement and reduction (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The f1 Hewitt camera is a field flattened Schmidt system of 60cm aperture. The salient features of this equipment are briefly described. Details of the methods of plate measurement are then given. The plate reduction is carried out in two stages. The plate is first calibrated using the photogrammetric method. The formulae usually quoted have been extended to take account of the large distortion introduced by the field flattening lens. In the second stage, the satellite measurements are reduced to satellite positions corrected for refraction, aberration, and when necessary, phase.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Photo. Astrometric Technique; p 141-154
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  • 4
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    Properties of hollow square gravitational wave detectors (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Antennas are described with gravitational radiation properties such as polarization, directivity, and scalar and tensor characteristics. These antenna devices are mechanically resonant systems in the shape of a hollow square with fundamental frequencies in the Hz range. An antenna characteristic is that the absorption cross section for quadrupole radiation at the normal frequency of vibration is the same as that of the fundamental if the damping factors are the same. The absorption cross section of quadrupole gravitational radiation is calculated for a class-1 detector of a cylindrical cross section and for a class-2 detector shaped like a hollow square.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: JPL Proc. of the Conf. on Exptl. Tests of Gravitation Theories; p 41-44
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  • 5
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    Improvements in Ross type astrometric objectives (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: It is shown that aspheric deformations of the first and fourth elements of the four element Ross objective can be introduced to permit one to obtain improved color corrections for astrometric purposes. The usual monochromatic aberrations are as well corrected as for the standard Ross lens. In addition, one can eliminate or reduce additional aberrations, such as secondary spectrum, chromatic spherical aberration, chromatic coma and chromatic distortion. The resulting objectives are suitable for use as intermediate and long focus astrometric objectives covering large angle fields.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 61-84
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  • 6
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    Introduction to passive nutation dampers (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Coning motion can prevent photographic and TV cameras and other oriented spacecraft experiments from maintaining a steady scan, and it can introduce a ripple in the high-gain communication system. Nutation dampers are used to remove this type of spacecraft instability. The first nutation damper flown in a missile for the stabilization of the gyroscope consisted of a hollow ring that was partially filled with mercury, and the sloshing of the mercury dissipated the nutational energy. A similar mercury-ring damper was used in the Pioneer 1 lunar probe in 1958 and became the first nutation damper to be used in space. Since then many types of nutation dampers have been designed for spin-stabilized spacecraft ranging in size from small scientific satellites to large space stations.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center 5th Aerospace Mech. Symp.; p 73-81
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  • 7
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    Dynamic behavior of the mercury damper (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The dynamic behavior of the mercury nutation damper is investigated. Particular attention is paid to the eccentric annular mercury configuration, which is the final continuous ring phase that occurs in the operation of all mercury dampers. In this phase, damping is poorest, and the system is closely linear. During the investigation, the hydrodynamic problem is treated as three dimensional, and extensive use is made of a variational principle of least-viscous frictional power loss. A variational principle of least-constraint is also used to advantage. Formulas for calculating the behavior of the mercury damper are obtained. Some confirmatory experiments were performed with transparent ring channels on a laboratory gyroscope. Selected movie frames taken during wobble damping are shown along with the results of film measurements.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center 5th Aerospace Mech. Symp.; p 9-16
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  • 8
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    Experiment D015: Night image intensification (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A performance test of a night image intensification system for use as a visual aid by the crewmen in Gemini is reported. The equipment package consisted of (1) image intensification camera; (2) camera control unit; (3) viewing monitor; (4) recording monitor and photographic recorder; and (5) monitor electronics and equipment control unit. Representative photographs are predominantly of lights and clouds. Photographs of three different sections of coastline reveal a contrast between the images of land and ocean. These images range in quality from good to poor.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.; p 431-443
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  • 9
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    Experiment S005: Synoptic terrain photography (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Several tentative conclusions can be derived from the results of the synoptic terrain photography experiment, with particular reference to the results from the Gemini mission. The photographs are additional confirmation of the feasibility and value of orbital photographs for geology, geography, and oceanography. The photographs have proven to be of value in the study of the tectonic problems. Although vertical or near-vertical photography is superior to oblique photography, photographs from the Gemini 12 mission have proven that low oblique photographs, and even high oblique photographs, may be of value for certain situations. The oblique views of the Makran Range were useful substitutes for vertical photographs. Equivalent aerial coverage by vertical photographs would have necessitated a camera altitude of several hundred miles. The oblique views of the Sierra Madre Oriental have been used in the search for structures that are approximately normal to the horizon and are enhanced by the foreshortening because of the photograph.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: The Gemini Program: Phys. Sci. Expt. Sum.; p 337-381
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  • 10
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    Experiment M403: Electrostatic charge (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Experiment M403 was flown on the Gemini 4 and 5 spacecraft in an effort to discover whether the spacecraft could accumulate sufficient excess electric charge to constitute a hazard for later Gemini-Agena rendezvous missions. An attempt was made to measure the electric field terminating on a small area of the spacecraft retrograde adapter section and to calculate the total spacecraft charge from this measured field value. The Gemini 5 instrument was inhibited from responding to electric fields that corresponded to a charge on the spacecraft. However, readings were obtained on the Gemini 5 mission that were of as great or greater magnitude than those obtained on the Gemini 4 mission. This could be interpreted as an indication that the contribution of a net spacecraft charge to the Gemini 4 measurements was negligible. An operational measurement that was performed on a later rendezvous mission was indicative of a very small exchange of charge between the Gemini spacecraft and the Agena vehicle.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: The Gemini Program: Phys. Sci. Expt. Sum.; p 115-124
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  • 11
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    Experiment S013: Ultraviolet astronomical camera (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Recordings of the stellar ultraviolet radiation in the wavelength region from 2000 to 4000 angstroms are reported. An analysis of the surface temperatures of the stars, the absorption effects occurring in the atmospheres of the stars, and the absorption effects of the interstellar dust is made from the photographic data obtained. In addition to gathering basic astrophysical data about hot, young stars, the experiment is used to clarify the problems and techniques of uv photography of stars from manned spacecraft.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center The Gemini Program: Phys. Sci. Expt. Sum.; p 81-99
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  • 12
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    Experiment M411: Two color earth limb photography (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Some simple calculations were made regarding the scattered light phenomenon of a sunlit earth limb. It was assumed that the light was to be scattered by an atmosphere irradiated by a zenith sun. Calculations were made with several different scattering coefficients assignable to various wavelengths of the extended visual region. The dependence of the excess blue-limb elevation was less obviously determined by the scattering angle than was suspected. It is reasonable to surmise that the variation of the values of excess blue-limb elevation originated principally from the red-limb variance, because the form of the blue-limb profiles (at least in their upper part) was more regular than was that of the red-limb profiles.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.; p 101-114
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  • 13
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    Gyroscope test of gravitation: An analysis of the important perturbations (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Two perturbations, the earth's quadrupole moment and the earth's revolution around the sun, are discussed. Schiff's proposed gyroscope test of gravitation is analyzed, along with the capability of deciphering each separate contribution to the angular velocity of spin precession.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: JPL Proc. of the Conf. on Exptl. Tests of Gravitation Theories; p 82-84
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  • 14
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    Nutation dampers for manned spacecraft (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Nutation dampers are examined from the standpoint of application to manned space stations with artificial gravity. Typical spacecraft concepts and associated control requirements are considered, and examples of the dampers proposed for these spacecraft are discussed.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: 5th Aerospace Mech. Symp.; p 103-109
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  • 15
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    Low nutation-rate dampers (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Mission requirements plus spacecraft weight and power constraints often reduce the excitation frequency of a nutation damper below 1 cpm. Since attitude stability is determined by damper performance, maximum effectiveness at low rates is demanded. Presented are design considerations that low-frequency dampers require, along with descriptions of two low-frequency systems: the Direct Measurement Explorer 1 and the Small Astronomy Satellite A (SAS-A).
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center 5th Aerospace Mech. Symp.; p 97-102
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  • 16
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    Response characteristics of a thermal-heliotrope solar-array orientation device (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The thermal heliotrope is a passive solar-array orientation device containing a bimetallic helix that rotates when activated by solar energy. The rate and extent of the rotation depends upon the properties of the two metals and the temperature of the helix. An energy-balance analysis is performed to determine the temperature distribution in the helix. By initially restricting the analysis, a simplified equation governing the response of the heliotrope is obtained. In order to gain insight into the response of the heliotrope, a series of experiments were performed. The results of these tests and the implications are presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center 5th Aerospace Mech. Symp.; p 33-39
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  • 17
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    Observations and reduction techniques of the US Coast and Geodetic Survey (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The plate reduction method and other aspects of the world geodetic net are described. About one hundred stars are used as reference stars on the PAGEOS satellite plates obtained on 300mm f.1. and later 450mm f.1. Wild BC-4 cameras. The measurements are made manually now on diapositives since these can, according to experience, be measured with higher accuracy and are adjusted following a rigorous projective geometric model. The satellite images are analytically represented by a polynomial curve, of which seven fictitious points are regarded as the result from this plate. Some other aspects of the program are also discussed.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Photo. Astrometric Technique; p 133-140
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  • 18
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    Physical limitations in sensors for a drag-free deep space probe (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The inner perturbing forces acting on sensors were analyzed, taking into account the technological limitations imposed on the proof mass position pickup and proof mass acquisition system. The resulting perturbing accelerations are evaluated as a function of the drag-free sensor parameters. Perturbations included gravitational attraction, electrical action, magnetic action, pressure effects, radiation effects, and action of the position pickup. These data can be used to study the laws of guidance, providing an optimization of the space probe as a whole.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: JPL Proc. of the Conf. on Exptl. Tests of Gravitation Theories; p 197-212
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  • 19
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    Automatic plate mensuration and reduction at Aeronautical Chart and Information Center (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The use of optical satellite observation data for geodetic purposes depends on the ability to extract pertinent information from photographic plates by identifying points on the plates and correlating them with known star positions for use in geodetic positioning. This procedure is accomplished with a new semi-automatic measuring system, an advanced analytical plate reduction program for the IBM 7094 computer, and a triangulation adjustment. The advantages gained with the measuring system, a brief discussion of the system itself, and the plate reduction and triangulation adjustment are described.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 109-118
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  • 20
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    Astrometric investigations at the Vienna Observatory and astrometric plans for the 60 inch reflector of the L. Figl Observatory (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A short discussion of the astrometric instruments at the Vienna Observatory is given. The essential features of design and organization of the planned 60 inch telescope are described. Furthermore, several points of view concerning modern astrometry are discussed, especially the usefulness of comparing astrometric results based upon different instruments, for instance the comparison between mirrors and refractor based data. Some examples are given together with new immediate results. Lastly, as far as possible at this moment astrometric plans for the new telescope are formulated.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 99-108
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  • 21
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    The reduction of the National Aeronautics and Space Administration plates at the New Mexico University (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A method of reducing GEOS satellite plates is described. The catalog positions of stars, whose images were measured, are updated to the time of the photographic observation. The plate constants are used to compute the positions of the seven (or fewer) flashing light images which were measured. There are corrected for refraction, parallax, and radial and decentering lens distortions. With sidereally tracking cameras, the exterior orientation is further corrected to the time of the particular flash, and the change of refraction with time is allowed for. First and second differences and standard deviations and covariances for the flashing light images are developed as a measure of accuracy.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 119-122
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  • 22
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    The extraction of accurate coordinates of images on photographic plates by means of a scanning type measuring machine (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The Moire method experimental stress analysis is similar to a problem encountered in astrometry. It is necessary to extract accurate coordinates from images on photographic plates. The solution to the mutual problem found applicable to the field of experimental stress analysis is presented to outline the measurement problem. A discussion of the photo-reading device developed to make the measurements follows.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Conf. on Phot. Astrometric Technique; p 55-60
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  • 23
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    Computer controlled precision digitizers of optical image data extraction (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The flying spot digitizer and its applications are described. Suggestions are made as to how this apparatus might be used for the precise and fast measurement of star images on photographic plates.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 15-24
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  • 24
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    Experiment S029: Earth-Moon libration regions photography (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Eleven photographs were taken of the L sub 4 earth-moon libration region during the Gemini 12 mission. The objective was to investigate the possible existence of clouds or particles of dust orbiting the earth in the L sub 4 region by the use of photographic techniques. No identifiable data were found in the first sequence of five photographs. Star field images could be recognized in two photographs of the second sequence of pictures. A light flare, of unknown source but possibly caused by light refraction from the window of the spacecraft, was recorded in both pictures. A reconstructed star field region (as photographed) is shown Isodensitraces of the two recognizable star fields were made; however, no conclusive results were obtained.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.; p 71-75
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  • 25
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    Experiment S001: Zodiacal Light Photography (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Observations made during the Gemini 5, 9, and 10 missions in the context of their relation to ground-based and balloon-based experiments on dim-light phenomena are reported. Zodiacal light is the visible manifestation of dust grains in orbit around the sun. The negatives that were exposed on the Gemini 9 mission were studied by the use of an isodensitracer to produce intensity isophotes. Data on the following factors were obtained: (1) intensity distribution of the zodiacal light, both morning and evening; (2) the height and intensity of the airglow at various geographic positions; and (3) intensity distribution of the Milky Way in the region of the sky near Cygnus. Also, a previously unreported phenomenon was discovered. This phenomenon appeared as an upward extension of the normal 90-kilometer airglow layer. The extension was in the form of wisps or plumes approximately 5 deg wide and extending upward approximately 5 deg. The results obtained from pictures exposed on the Gemini 10 mission were of qualitative or geometrical value only.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.; p 3-16
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  • 26
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    A semi-automatic measuring machine (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A machine designed to locate automatically a star image on a photographic plate from approximate coordinates on a punched card and to measure and record its position to a micron is described. The main frame of the machine is of granite, as are the x and y coordinate carriages which move on air bearings against granite ways. The system is capable of making measurements continuously over a 10 x 10 inch range by means of a Ferranti moire fringe system, with a least count of one micron.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 49-54
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  • 27
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    The Lick-Gaertner automatic measuring system (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The Lick-Gaertner automatic equipment has been designed mainly for the measurement of stellar proper motions with reference to galaxies, and consists of two main components: the survey machine and the automatic measuring engine. The survey machine is used for initial inspection and selection of objects for subsequent measurement. Two plates, up to 17 x 17 inches each, are surveyed simultaneously by means of projection on a screen. The approximate positions of objects selected are measured by two optical screws: helical lines cut through an aluminum coating on glass cylinders. These approximate coordinates to a precision of the order of 0.03mm are transmitted to a card punch by encoders connected with the cylinders.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Photo. Astrometric Technique; p 33-48
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  • 28
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    Experiment S030: Dim sky photography/orthicon (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: During Gemini missions, the image orthicon system was used to obtain photographic data on faint and diffuse astronomical phenomena. Results show that the photographs may be used to determine the airglow geometry. Although it was sensitive, the original photographic system was unsuitable for use in the study of dim and diffuse astronomical light sources.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: The Gemini Program: Phys. Sci. Expt. Sum.; p 445-454
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  • 29
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    Experiment S006: Synoptic weather photography (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A data gathering effort on a number of cloud systems is reported. On both manned and unmanned Mercury and Gemini 3 missions, a number of good pictures of cloud systems were obtained. Also, specific experiments were performed by the crewmembers in the Mercury missions. Those experiments involved some of the spectral reflectance characteristics of clouds, land, and water regions of the earth surface as viewed from outside the atmosphere. Pictures obtained on successive revolutions of a Gemini spacecraft were indicative of the changes in and the movements of clouds at approximately 90-min intervals at certain points beneath the track of the spacecraft. A series of such views explain the various meteorological phenomena.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.; p 383-414
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  • 30
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    The overlap methods (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The different methods of reducing measurements on photographic plates by the overlap methods are compared. An attempt is made to distinguish the methods accepted by most astronomers from those not generally agreed upon and from those that are still being studied. Questions examined are: organization of future works, improvement of AGK2 and AGK3, and solutions for the astrographic catalog, as well as considerations of some empirical methods.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Conf. on Phot. Astrometric Technique; p 219-240
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  • 31
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    A low temperature gravitational radiation detector (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The beginning design of an experiment is discussed for studying gravitational radiation by using massive detectors which are cooled to ultralow temperatures in order to improve the signal to noise ratios and the effective range and stability of the detectors. The gravitational detector, a low detection system, a cooled detector, magnetic support, superconducting shielding, and superconducting accelerometer detector are described.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: JPL Proc. of the Conf. on Exptl. Tests of Gravitation Theories; p 38-40
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  • 32
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    Experiments D001, D002, and D006: Basic object, nearby object, and surface photography (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: On the Gemini 5 mission, acquisition and tracking was performed by the use of celestial bodies as aiming points. However, distant photography of the REP was not possible because of spacecraft electrical power difficulties which occurred after REP ejection. Terrestrial photography was accomplished within the limitations imposed by weather conditions and spacecraft electrical and thruster problems. The photographs that were obtained were significant only as an element of the data to be used in technique evaluation. The other data were time-correlated position and pointing information, atmospheric conditions, sun angle, exposure settings, and the flight logs and verbal comments of the crewmembers. The photographs shown are representative of those that facilitated evaluation of the acquisition and tracking techniques that were used in these three experiments.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.; p 455-466
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    Experiment M410: Color patch photography (1971)
    In:  CASI
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    Publication Date: 2005-11-30
    Description: A slate that supported four calibrated color targets was photographed during Gemini 10 mission extravehicular activity to determine if existing outdoor-type color films can reproduce colored objects accurately in the space environment. The experiment resulted in the acquisition of sufficient information to confirm that objects can be photographed in space with good color fidelity by the use of existing materials. Available color film is balanced to the solar spectrum in space, and the effect of ultraviolet energy on film degradation appears to be negligible.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: The Gemini Program: Phys. Sci. Expt. Sum.; p 467-470
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    Experiment M412: Landmark contrast measurements (1971)
    In:  CASI
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    Publication Date: 2005-11-30
    Description: The objective was to measure the visual contrast of landmarks with the surroundings to determine the relative visibility of terrestrial landmarks from positions outside the atmosphere. Because of a malfunction of the photometer, no photometric data were obtained. A trial sighting run was performed in which a landmark on the western African coast was sighted, tracked through the nadir, and photographed. The telemetry record of the photograph was examined. Telemetry data were inconsistent with the known conditions of the landmark.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: The Gemini Program: Phys. Sci. Expt. Sum.; p 77-80
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    Experiment S011: Airglow horizon photography (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The night airglow, which lies in a thin layer 70 to 100 kilometers above the earth, was studied. Although the surface brightness is low when observed through this layer from below, brightness of the airglow is augmented by a factor of approximately 35 when the airglow is viewed tangentially from the vantage point of the Gemini orbit. This augmentation phenomenon is an effective means of synoptic airglow study. The objective was to extend and refine the photographic method. The following techniques were used to achieve this goal: (1) The camera was equipped with a filter to photograph the two prominent line emissions at 5577 and 5893 A; (2) An illuminated camera sight and an aiming camera mount were used in an attempt to reduce the number of blurred photographs; (3) The number of photographs taken and the amount of the earth photographed were as large as possible; and (4) The photograph of the twilight horizon revealed a sunlit dayglow layer.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Nasa. Manned Spacecraft Center The Gemini Program: Phys. Sci. Expt. Sum.; p 17-36
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    Photographic astrometry and overlap reduction techniques (1971)
    In:  CASI
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    Publication Date: 2005-11-30
    Description: Rigorous adjustment algorithms are discussed which extract hidden information contained in overlapping photographs of star fields. In particular, the development of adequate physical and statistical models is emphasized.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 209-218
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    Plate measurement techniques and reduction methods used by the West German satellite observers, and resulting consequences for the observation (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The West German tracking stations are equipped with ballistic cameras. Plate measurement and plate reduction must therefore follow photogrammetric methods. Approximately 100 star positions and 200 satellite positions are measured on each plate. The mathematical model for spatial rotation of the bundle of rays is extended by including terms for distortion and internal orientation of the camera as well as by providing terms for refraction which are computed for the measured coordinates of the star positions on the plate. From the measuring accuracy of the plate coordinates it follows that the timing accuracy for the exposures has to be about one millisecond, in order to obtain a homogeneous system.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 155-160
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    A lightweight bimetallic actuator for spacecraft thermal control (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The design, development, and construction of two types of active thermal-control systems are described. These designs are based on the controlled angular deflections of spiral-wound bimetallic actuators. The use of these actuators and lightweight louvers results in a frictionless system that is low in weight yet simple in design and low in cost. Both designs exhibit high reliability, good performance repeatability, and do not require power from the spacecraft. Design philosophy and implementation, design tradeoffs, and materials selection are reviewed. The test program is described, and results are presented.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center 5th Aerospace Mech. Symp.; p 165-170
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  • 39
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    Damper design from a structural engineer's point of view (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A nonlinear structural analysis, employing the nonlinear damper characteristics obtained from a damper test, was successfully performed on the Mariner spacecraft's solar-panel system, and the result was compared with results from a system-level spacecraft test in which some solar-panel tip dampers bottomed at a certain frequency. The analysis showed that the damper bottoming was attributable to a jump phenomenon that can result when a damper's response is not single-valued at some frequency.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center 5th Aerospace Mech. Symp.; p 59-64
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  • 40
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    Nutation-damper design for dual-spin spacecraft (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A dual-spin spacecraft is a spin-stabilized spacecraft consisting of two major structures. Momentum is stored in the spinning wheel, while the sail, or platform, can be despun at various rates about the spacecraft axis. Factors that affect the design of nutation-control systems for single- and dual-spin spacecraft are discussed. The nutation-control system of the Orbiting Solar Observatory spacecraft is described.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA. Goddard Space Flight Center 5th Aerospace Mech. Symp.; p 87-95
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  • 41
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    Electrical manifestations of cardiac activity (1971)
    In:  CASI
    Details
    Publication Date: 2009-11-16
    Description: Electrocardiography and vector cardiography of athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 106-149
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  • 42
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    Some comments on control of the microvascular system (1971)
    In:  CASI
    Details
    Publication Date: 2009-11-16
    Description: Dynamic model for microvascular system control of mammal body kinematics
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 76-112
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  • 43
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    A physical view of metabolic systems - The biochemical transition from organ systems to the higher central nervous systems (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Biochemical molecular model for metabolic energy transition from mammalian organs to central nervous system
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 198-229
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  • 44
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    The cardiovascular system (1971)
    In:  CASI
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    Publication Date: 2006-04-20
    Description: Biological models for mammalian cardiovascular systems
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 130-197
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  • 45
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    An introduction to structures at the lower levels of organization (1971)
    In:  CASI
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    Publication Date: 2006-04-20
    Description: Dynamic models for cell membrane functions in molecular biology
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 56-75
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  • 46
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    Organization of cardiological service in sports medicine (1971)
    In:  CASI
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    Publication Date: 2006-04-20
    Description: Cardiological medical services for Soviet athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 460-464
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  • 47
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    Disruptions of the cardiac rhythm in athletes (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Cardiac rhythm disruptions in athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 385-402
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  • 48
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    Some clinical problems of sports medicine (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Clinical problems of cardiology of athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 351-362
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  • 49
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    X-ray methods of investigation of the cardiac activity of athletes (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: X ray methods for quantitative analysis of cardiac activity in athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 239-284
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  • 50
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    The role of the nervous system in the organization and integration of living systems (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Neurophysiological model for interactions between nervous system, cellular mechanisms, and human behavior synthesis
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 230-293
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  • 51
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    Summary of some of the abstract principles for a biosystems science (1971)
    In:  CASI
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    Publication Date: 2006-04-20
    Description: Summary of design parameters for models of dynamic biological systems
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 50-55
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  • 52
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    Introduction to a biological systems science - Preliminaries (1971)
    In:  CASI
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    Publication Date: 2006-04-20
    Description: Biological systems analysis for developing dynamic physiological models
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 1-23
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  • 53
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    Systolic noises in athletes (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Phonocardiographic analysis of systolic noises in athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 439-459
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  • 54
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    Some methods of transmission analysis of cardiological information in sports (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Transmission and analysis of cardiological data on athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 315-349
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  • 55
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    Mechanical manifestations of cardiac activity and the functional state of the vessels (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Methods for measuring mechanical aspects of cardiac activity and vessel functional state
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 150-238
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  • 56
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    Investigation of certain parameters of cardio and hemodynamics (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Technology review on cardio and hemodynamics
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 74-105
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  • 57
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    The cardiac activity of athletes in the quiet state (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Cardiac activity of athletes in quiet state
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 2-34
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  • 58
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    Summary, overview, and discussion (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Biodynamic modelling of biosystems by physical and biological parameters
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 319-327
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  • 59
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    The chemical origins of mammalian behavior (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Biochemistry model for endocrine system effects on mammalian neurophysiology and human behavior
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 294-318
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  • 60
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    Thoughts concerning autonomic nervous system controlling influences (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Physical controls of autonomic nervous system by ganglia impulses
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 113-129
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  • 61
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    Hierarchical regulation in the complex biological organism (1971)
    In:  CASI
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    Publication Date: 2006-04-20
    Description: Hierarchical regulation model for human biological systems
    Keywords: BIOSCIENCES
    Type: INTRODUCTION TO A BIOL. SYSTEMS SCI. FEB. 1971; P 37-49
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  • 62
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    Cardiac overstress in athletes (1971)
    In:  CASI
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    Publication Date: 2006-04-20
    Description: Physical overstress effect on cardiac muscle in athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 403-438
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  • 63
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    Changes in the arterial pressure of athletes (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Arterial pressure characteristics of athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 363-384
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  • 64
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    Functional tests of the cardiovascular system (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Functional tests of cardiovascular system in athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 285-314
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  • 65
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    Cardiac activity during conditions of muscular work (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Cardiac activity under stress of physical work
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 35-57
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  • 66
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    Blood circulation and the state of training (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Blood circulation and state of physical training in athletes
    Keywords: BIOSCIENCES
    Type: HEART AND SPORTS- ESSAYS ON CARDIOLOGY IN SPORTS FEB. 1971; P 58-72
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  • 67
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    Studies of the electron transport chain of extremely halophilic bacteria. V (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Electron transport chain of extremely halophilic bacteria, investigating cytochrome oxidase activity dependence on pH
    Keywords: BIOSCIENCES
    Type: ; RO(
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  • 68
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    Large-area pulse ionization chamber for measurement of extremely heavy cosmic rays (1971)
    In:  Other Sources
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    Description: Large area parallel-plate pulse ionization chamber for high altitude balloon measurements of relativistic cosmic ray heavy nuclei
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; 331-335. (
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  • 69
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    Survival of microorganisms in a simulated Martian environment (1971)
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    Publication Date: 2011-08-16
    Description: Simulated Martian environment effects on terrestrial microorganisms survival
    Keywords: BIOSCIENCES
    Type: ; 104-111. (
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  • 70
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    Effects of hypobaric hyperoxia in vivo on lipid synthesis in rat liver and adipose tissue slices (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Stimulatory effects of hypobaric hyperoxia on lipid synthesis in rat liver and adipose tissues under free feeding
    Keywords: BIOSCIENCES
    Type: ; YAL SOCIETY (
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  • 71
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    Photoionization mass spectrometry - A mating of vacuum UV optics and mass spectrometry (1971)
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    Publication Date: 2011-08-16
    Description: Photoionization mass spectrometry, considering application to appearance potentials determination, ion-neutral reactions and gas analysis
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; 23-26, 28, 30 (
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  • 72
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    Variable sweep-rate frequency response and vibration testing (1971)
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    Description: Variable sweep rate frequency response and vibration testing for test time reduction, using closed loop controller for sweep rate modulation
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; 23-26, 28, 30 (
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  • 73
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    Studies of the electron transport chain of extremely halophilic bacteria. VI (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Halophilic bacteria electron transport chain, studying protein, phospholipids, flavoproteins and cytochromes sedimentation properties by electron microscopy and light scattering technique
    Keywords: BIOSCIENCES
    Type: ; ADEMIE DES SCIENCES
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  • 74
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    Method for checking the stability of a setup for white light holograms (1971)
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    Description: Checking method for reflection-type holographic system behavior, emphasizing critical stability of glass plate
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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  • 75
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    Independence of evoked potentials and apparent size (1971)
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    Description: Visual evoked potential relationship to apparent size reduction of invariant retinal image
    Keywords: BIOSCIENCES
    Type: ; 251-289. (
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  • 76
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    Liquid-filled proportional counter (1971)
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    Publication Date: 2011-08-16
    Description: Liquid Xe filled single wire proportional and multiple wire ionization chambers, measuring gain and time/spatial resolution properties
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; 29 (
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  • 77
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    Method of improving the SNR of an image dissector for use in an electronic scanning spectrometer (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Image intensifier tube coupled to smoothing dissector to improve SNR in electronic scanning spectrometer
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; IBRATIONAL COMBUSTIO
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  • 78
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    Ribosome-catalyzed polyester formation (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Polyester formation by Escherichia coli ribosome catalyzed alpha-hydroxy acid incorporation into polymer chain
    Keywords: BIOSCIENCES
    Type: ; ADEMIE DES SCIENCES
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  • 79
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    Active cavity radiometric scale, international pyrheliometric scale, and solar constant (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Active cavity radiometric and international pyrheliometric scales comparison and solar constant from simultaneous solar irradiance measurements
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; ADEMIE DES SCIENCES
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    Application of a magnetic mirror system as a velocity analyzer (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Magnetic mirror system measured axial energy distribution of electron beams conversion to equivalent electrostatic analyzer
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; ADEMIE DES SCIENCES
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  • 81
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    Aperture configuration and imaging performance (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Optical aperture configurations effect on image performance, discussing large telescope systems design criteria
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; TROPHYSICAL JOURNAL
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  • 82
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    Color and color-IR films for soil identification (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Color and color IR films for soil identification, performing optical density measurements on film transparencies with densitometer
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; ADEMIE DES SCIENCES
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  • 83
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    Nonlinear analysis of flow pulses and shock waves in arteries. I (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Large amplitude wave propagation in arteries, deriving aorta mathematical model consistent with heart pressure and flow pulses and wavefront velocity
    Keywords: BIOSCIENCES
    Type: ; UG-REVUE(
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  • 84
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    Use of a tungsten filament lamp as a calibration standard in the vacuum ultraviolet (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Sapphire windowed argon filled tungsten ribbon filament lamp in vacuum UV for application in photomultiplier quantum efficiency calibration
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; FORMATSIONNYE MATERI
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  • 85
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    Two inducers of rapid erythroblast multiplication in vitro (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Rapid erythroblast multiplication in vitro by incubation of rabbit blood buffy coat and marrow cells, giving autoradiographic results
    Keywords: BIOSCIENCES
    Type: ; YAL SOCIETY (
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  • 86
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    Cell for measurement of basic electrical properties of amorphous and polycrystalline materials under pressure (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Measuring instrument for amorphous and polycrystalline materials resistivity and Seebeck coefficient as function of temperature and pressure
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; YAL SOCIETY (
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  • 87
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    Configuration of amino-acids in carbonaceous chondrites and a Pre-Cambrian chert (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Carbonaceous chondrite and Precambrian chert amino acids detection, using simultaneous optical configuration determination and gas chromatography
    Keywords: BIOSCIENCES
    Type: ; 6-8, 10-16 (
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  • 88
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    Automatic theodolite for pre-launch azimuth alignment of the Saturn space vehicles (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Prelaunch automatic azimuth alignment theodolites for Saturn 1B and Saturn 5 space vehicles inertial guidance system, discussing return images separation and error signal generation
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; BROTECHNIKA, NO. 1(
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  • 89
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    Elimination of coherent noise in a coherent light imaging system (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Coherent noise elimination in coherent light imaging systems by time averaging noise concentrations through lens rotation about optical axis
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; TROPHYSICAL JOURNAL
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  • 90
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    Polarizing properties of pulverized materials with special reference to the lunar surface (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Pulverized volcanogenic products and chemicals polarizing properties determination, applying to lunar surface layer
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; TROPHYSICAL JOURNAL
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  • 91
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    Photometric properties of the Mariner cameras and of selected regions on Mars (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Mariner photometric data, examining variations in Martian surface limb darkening with reciprocity principle
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: ; SEARCH(
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  • 92
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    Preliminary report on thermophilic blue-green algae and microorganisms in Iceland and Surtsey (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Biological effects of thermal environments on dispersal of blue green algae and microorganisms in Iceland and Surtsey
    Keywords: BIOSCIENCES
    Type: NASA. AMES RES. CENTER BOSTON COLL. ENVIRON. CENTER SUMMER INST. ON SURTSEY AND ICELAND FEB. 1971; P 92-93
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  • 93
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    Fungal leaching of titanium from rock. (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Penicillium simplicissimum is found to solubilize up to 80% of the titanium in granitic rocks but less than 2% of the titanium in basaltic rocks. These findings were made in investigating the interactions of microorganisms with rocks and minerals of the biosphere in studies aimed at developing experiments for the detection of extraterrestrial life.
    Keywords: BIOSCIENCES
    Type: Applied Microbiology; 22; Nov. 197
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  • 94
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    Photorecovery of gamma irradiated cultures of blue-green alga, Anacystis nidulans. (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Evidence is given for photorecovery of Anacystis nidulans after exposures to Co 60 gamma radiation. After irradiation the levels of viable cells were higher in cultures kept in white light than in cultures kept dark for 24 hr. The post-irradiation survival rate increase after 30-min exposures to visible light is demonstrated in cultures irradiated with 35 krad. An increase in survival rates was not observed after exposures to ?red' light.
    Keywords: BIOSCIENCES
    Type: Radiation Botany; 11; 1971
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  • 95
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    A large granite stage and measuring microscope. (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: A stage and measuring microscope servocontrolled by a computer have been constructed. The travel of the stage is 0.5 x 0.5 m and the travel of the microscope objective is 7.5 cm. The measuring accuracy is 1 micron in the x-y plane and 5 microns along the z axis. The mechanical and optical construction of the stage and microscope, as well as the way in which the control electronics are organized, permit great flexibility of operation. Possible applications include the scanning and measuring of astronomical plates, the laying out of patterns of semiconductor devices of very large sizes, and the measurement of precision grids.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Review of Scientific Instruments; 42; Nov. 197
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  • 96
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    Radiological physics characteristics of the extracted heavy ion beams of the bevatron. (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Studies of the depth-ionization properties and the biological effects of heavy ion beams produced at the bevatron have extended work previously done with less energetic beams from other sources. Results indicate that heavy ion beams are suitable for tumor therapy, studies relating to space biology, and fundamental radiobiology.
    Keywords: BIOSCIENCES
    Type: Science; 174; Dec. 10
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  • 97
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    Jones's matrix representation of optical instruments. II - Fourier interferometers /spectrometers and spectropolarimeters/. (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Our method of matrix synthesis of optical components and instruments is applied to the derivation of Jones's matrices appropriate for Fourier interferometers (spectrometers and spectropolarimeters). These matrices are obtained for both the source beam and the detector beam. In the course of synthesis, Jones's matrices of the various reflectors (plane mirrors; retroreflectors: roofed mirror, trihedral and prism cube corner, cat's eye) used by these interferometers are also obtained.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Applied Optics; 10; Dec. 197
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  • 98
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    Hot wire measurements of freestream and shock layer disturbances. (1971)
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    Publication Date: 2011-08-16
    Description: Preliminary results of hypersonic helium tunnel investigations of whether disturbance measurements in the freestream alone are adequate to describe the model boundary-layer input disturbances, or whether the model shock wave changes the freestream disturbances before they reach the model boundary layer. It was found that the spectra in the freestream are typical of the wide band turbulence as it exists for sound radiated from a turbulent boundary layer. In the shock layer some redistribution of the spectra seems to occur, especially at the highest stagnation pressure, but the more interesting feature is the gradual development of a discrete component, around 70 kHz in the spectra. This feature is believed to be associated with boundary-layer transition.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: AIAA Journal; 9; Dec. 197
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  • 99
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    Experimental investigation on the origin of the genetic code. (1971)
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    Publication Date: 2011-08-16
    Description: A simple model of interacting complex systems of species is tested to assess the binding behavior of monomeric nucleic acid and protein components during evolution. Nine representative amino acids are immobilized by the formation of an amide linkage on a prepared chromatographic support. Selective binding of ribonucleoside 5-phosphates in these amino acids is achieved under standardized conditions, and a site-binding model is derived to characterize the binding. It is shown that the binding behavior of the reactants during nucleic acid-protein interactions depends on the nature of the base and the amino acid. The results of the study are assessed as useful for the interpretation of more complex nucleic acid-protein systems and of their role in the evolution of the cell.
    Keywords: BIOSCIENCES
    Type: Journal of Molecular Evolution; 1; 1, 19; 1971
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  • 100
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    Short term response of insulin, glucose, growth hormone and corticosterone to acute vibration in rats. (1971)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Study carried out to obtain some notion of the initial phasing and interactive effects among some hormones known to be responsive to vibration stress. Sprague-Dawley derived rats were exposed to the acute effects of confinement and confinement with lateral (plus or minus G sub y) vibration. The coincident monitoring of glucose, insulin, growth hormone, and corticosterone plasma levels, during and immediately subsequent to exposure to brief low level vibration, exhibits the effects of inhibition of insulin release by epinephrine. The ability of insulin (IRI) to return rapidly to basal levels, from appreciably depressed levels during vibration, in the face of elevated levels of glucose is also shown. Corticosterone responds with almost equal rapidity, but in opposite phase to the IRI. The immuno-assayable growth hormone (IGH) dropped from a basal level of 32 ng/ml to 7.3 ng/ml immediately subsequent to vibration and remained at essentially that level throughout the experiment (60 min). Whether these levels represent a real fall in the rat or whether they merely follow the immuno-logically deficient form is still in question.
    Keywords: BIOSCIENCES
    Type: Aerospace Medicine; 42; July 197
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