Latest content added for UNT Digital Library Collection: Technical Report Archive & Image Library (TRAIL)https://digital.library.unt.edu/explore/collections/TRAIL/browse/?sort=added_a&fq=str_title_serial:NBS+monograph&fq=str_year:19642012-01-29T18:10:37-06:00UNT LibrariesThis is a custom feed for browsing UNT Digital Library Collection: Technical Report Archive & Image Library (TRAIL)Standard X-ray Diffraction Powder Patterns: Section 3. Data for 51 Substances2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13211/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13211/"><img alt="Standard X-ray Diffraction Powder Patterns: Section 3. Data for 51 Substances" title="Standard X-ray Diffraction Powder Patterns: Section 3. Data for 51 Substances" src="https://digital.library.unt.edu/ark:/67531/metadc13211/small/"/></a></p><p>Report documenting standard x-ray diffraction powder patterns for various compounds, intended to replace previous data or provide information for new substances. It describes the methods and, for each substance, outlines any previous data as well as information about the sample used and structural data, with a table of diffraction patterns.</p>Tables of Chemical Kinetics : Homogeneous Reactions (Supplementary Tables)2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13226/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13226/"><img alt="Tables of Chemical Kinetics : Homogeneous Reactions (Supplementary Tables)" title="Tables of Chemical Kinetics : Homogeneous Reactions (Supplementary Tables)" src="https://digital.library.unt.edu/ark:/67531/metadc13226/small/"/></a></p><p>From Preface: "A brief description of the method used in compiling these tables and the limitation of coverage are given in the preface to Supplement 1 of the NBS Circular 510. The present volume contains information pertaining to substitution, exchange, and elimination reaction types and extends the material on these types found in NBS Monograph 34, Volume 1. The date on each page gives the year and month to which the literature had been surveyed."</p>Tables of Electron Radial Functions and Tangents of Phase Shifts for Light Nuclei (Z=1 through 10)2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13265/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13265/"><img alt="Tables of Electron Radial Functions and Tangents of Phase Shifts for Light Nuclei (Z=1 through 10)" title="Tables of Electron Radial Functions and Tangents of Phase Shifts for Light Nuclei (Z=1 through 10)" src="https://digital.library.unt.edu/ark:/67531/metadc13265/small/"/></a></p><p>From Introduction: "This Monograph, supplemented by ORNL-3207 [9], should eliminate completely the need for use of approximate formulas (e.g. those of Kotani and Ross [10]). The formulation of the problem has been summarized in sec. II. This is followed in sec. III by a discussion of the methods used in numerical calculations. Sec. IV contains a detailed explanation to facilitate the use of present tables."</p>Microwave Spectral Tables: [Volume 2.] Line Strengths of Asymmetric Rotors2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13255/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13255/"><img alt="Microwave Spectral Tables: [Volume 2.] Line Strengths of Asymmetric Rotors" title="Microwave Spectral Tables: [Volume 2.] Line Strengths of Asymmetric Rotors" src="https://digital.library.unt.edu/ark:/67531/metadc13255/small/"/></a></p><p>From Abstract: "Procedures for interpolation as a function of k and extrapolation to larger J values are discussed."</p>Line Parameters and Computed Spectra for Water Vapor Bands at 2.7 mu2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13259/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13259/"><img alt="Line Parameters and Computed Spectra for Water Vapor Bands at 2.7 mu" title="Line Parameters and Computed Spectra for Water Vapor Bands at 2.7 mu" src="https://digital.library.unt.edu/ark:/67531/metadc13259/small/"/></a></p><p>From Foreword: "This Monograph is one of a series intended to provide fundamental information required for the estimation and interpretation of atmospheric transmittance at infrared frequencies. Part I of this Monograph presents the fundamental properties of the 2.7m water vapor band in terms of line absorptions and the integrated transmittance at any frequency for infinite resolution. Part II presents examples of the "degraded" transmittance for finite resolution, as a function of the spectral slit width, concentration, and pressure with which direct observations may be compared."</p>Creep and Drying Shrinkage of Lightweight and Normal-Weight Concretes2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13260/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13260/"><img alt="Creep and Drying Shrinkage of Lightweight and Normal-Weight Concretes" title="Creep and Drying Shrinkage of Lightweight and Normal-Weight Concretes" src="https://digital.library.unt.edu/ark:/67531/metadc13260/small/"/></a></p><p>From Scope of Investigation: "The work reported here is part of a continuing program concerning the long-term volume changes in concretes made from lightweight and normal-weight aggregates. The creep, drying-shrinkage, and strength data presented are for concretes made with 24 expanded shale lightweight aggregates and 5 natural, normal-weight aggregates. These aggregates were from widely separated geographical locations and were to be representative samples of aggregates being used in the production of structural concretes."</p>An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13261/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13261/"><img alt="An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation" title="An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation" src="https://digital.library.unt.edu/ark:/67531/metadc13261/small/"/></a></p><p>From Introduction: "The purpose of the paper is to discuss the assumptions and the reasoning by which the calculations described in the Engineering Manual were derived from the data in [1]. The relevant curves from [1] are given in Appendix A and the technical charts from the Engineering Manual are given in appendix B."</p>Sound Insulation of Wall, Floor, and Door Constructions2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13262/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13262/"><img alt="Sound Insulation of Wall, Floor, and Door Constructions" title="Sound Insulation of Wall, Floor, and Door Constructions" src="https://digital.library.unt.edu/ark:/67531/metadc13262/small/"/></a></p><p>From Abstract: "The data obtained at the National Bureau of Standards on the sound insulating properties of building structures are summarized. A brief description of the sound-measuring techniques is given."</p>Microwave Spectral Tables: [Volume 1.] Diatomic Molecules2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13254/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13254/"><img alt="Microwave Spectral Tables: [Volume 1.] Diatomic Molecules" title="Microwave Spectral Tables: [Volume 1.] Diatomic Molecules" src="https://digital.library.unt.edu/ark:/67531/metadc13254/small/"/></a></p><p>From Abstract: "For about 1500 spectral lines of diatomic molecules observed by coherent radiation techniques, measured frequencies, assigned quantum numbers, and newly computed intensities are given."</p>Investigation of the Hydraulics of Horizontal Drains in Plumbing Systems2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13268/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13268/"><img alt="Investigation of the Hydraulics of Horizontal Drains in Plumbing Systems" title="Investigation of the Hydraulics of Horizontal Drains in Plumbing Systems" src="https://digital.library.unt.edu/ark:/67531/metadc13268/small/"/></a></p><p>From introduction: "In this paper, data obtained by Hunter and by the author are reported from laboratory investigations of (1) surge flow introduced into empty simply drains, (2) attenuation of surges in simple drains, (3) continuous full-section flow in simple drains under substantially steady, uniform conditions, (4) steady flow in compound drains, and (5) surge flow introduced through a branch drain into the side or top of a main drain carrying steady flow."</p>Project FIST: Fault Isolation by Semi-automatic Techniques2010-02-21T23:09:23-06:00https://digital.library.unt.edu/ark:/67531/metadc13266/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc13266/"><img alt="Project FIST: Fault Isolation by Semi-automatic Techniques" title="Project FIST: Fault Isolation by Semi-automatic Techniques" src="https://digital.library.unt.edu/ark:/67531/metadc13266/small/"/></a></p><p>From Abstract: "This report describes the hardware required and discusses practical ways in which the necessary circuitry can be built into prime equipment."</p>Shielding Against Gamma Rays, Neutrons, and Electrons From Nuclear Weapons: A Review and Bibliography2012-01-29T18:10:37-06:00https://digital.library.unt.edu/ark:/67531/metadc70452/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc70452/"><img alt="Shielding Against Gamma Rays, Neutrons, and Electrons From Nuclear Weapons: A Review and Bibliography" title="Shielding Against Gamma Rays, Neutrons, and Electrons From Nuclear Weapons: A Review and Bibliography" src="https://digital.library.unt.edu/ark:/67531/metadc70452/small/"/></a></p><p>Report discussing the problem of predicting dose rates and of estimating the effectiveness of shielding from radiations resulting from nuclear explosions. A number of calculations and supporting experiments regarding the penetration and diffusion of gamma rays, neutrons, and electrons through air and bulk materials are summarized. Indications are given of gaps in such input information. A selection of 485 references from the unclassified literature is presented, of which 388 are cataloged as to source geometry and energy, absorber material and configuration, type of data presented, and method of calculation or experimental technique. These cataloged references include radiation field studies ranging from the point-source infinite-medium situation up through such complicated geometries as foxholes, shelters, and conventional structures. The other references are of a general or review nature or contain input spectral data.</p>Curves of Input Impedance Change Due to Ground for Dipole Antennas2012-01-29T18:10:37-06:00https://digital.library.unt.edu/ark:/67531/metadc70453/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc70453/"><img alt="Curves of Input Impedance Change Due to Ground for Dipole Antennas" title="Curves of Input Impedance Change Due to Ground for Dipole Antennas" src="https://digital.library.unt.edu/ark:/67531/metadc70453/small/"/></a></p><p>Report presenting graphs of the change in input impedance of electrically short dipole antennas in the presence of an isotropic and homogeneous ground which considers four types of antennas: horizontal and vertical, electric and magnetic dipoles. Curves of the change in both the input resistance and reactance are shown for a wide range of values of the frequency, antenna height above the ground, and electromagnetic ground constants.</p>The NBS Standard Hygrometer2012-01-29T18:10:37-06:00https://digital.library.unt.edu/ark:/67531/metadc70454/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc70454/"><img alt="The NBS Standard Hygrometer" title="The NBS Standard Hygrometer" src="https://digital.library.unt.edu/ark:/67531/metadc70454/small/"/></a></p><p>Report describing a gravimetric hygrometer that serves as the NBS standard instrument for the measurement of the moisture content of gases on an absolute basis in terms of mixing ratio (mass water vapor/ unit mass of dry gas). The National Bureau of Standards and other laboratory reference and working instruments are compared and calibrated with this instrument. The measuring operation involves the absorption of the water vapor from a water vapor-gas mixture by a solid desiccant and the determination of the mass of this water vapor by precision weighing; it also involves the determination of the volume of the associated gas of known density by counting the fillings of two calibrated stainless steel cylinders. The construction and operation of the instrument is described. Discussions of the tests and calibrations of component parts, and of the sources of errors also are included. There is also an analysis of the random and systematic errors effecting the overall accuracy in the determination of mixing ratio.</p>A Complete Mode Sum for LF, VLF, ELF Terrestrial Radio Wave Fields2012-01-29T18:10:37-06:00https://digital.library.unt.edu/ark:/67531/metadc70456/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc70456/"><img alt="A Complete Mode Sum for LF, VLF, ELF Terrestrial Radio Wave Fields" title="A Complete Mode Sum for LF, VLF, ELF Terrestrial Radio Wave Fields" src="https://digital.library.unt.edu/ark:/67531/metadc70456/small/"/></a></p><p>Report discussing the VLF, ELF propagation in the earth-ionosphere waveguide emphasizing the total field found by summing all modes which contribute appreciably. Solutions are given and calculations are made for a homogeneous isotropic ionosphere, a homogeneous ionosphere with a constant radial magnetic field imposed, and an ionosphere with a magnetic field of arbitrary dip angle.</p>On the Statistical Theory of Electromagnetic Waves in a Fluctuating Medium (II): Mathematical Basis of the Analogies to Quantum Field Theory2012-01-29T18:10:37-06:00https://digital.library.unt.edu/ark:/67531/metadc70457/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc70457/"><img alt="On the Statistical Theory of Electromagnetic Waves in a Fluctuating Medium (II): Mathematical Basis of the Analogies to Quantum Field Theory" title="On the Statistical Theory of Electromagnetic Waves in a Fluctuating Medium (II): Mathematical Basis of the Analogies to Quantum Field Theory" src="https://digital.library.unt.edu/ark:/67531/metadc70457/small/"/></a></p><p>Report discussing the relationship between quantum field theory and the the statistical theory of waves. Basic equations exist in the latter theory which correspond closely to the fundamental equations of the former theory; i.e., to the commutation relations and the Heisenberg equation of motion. A probability density function of waves is introduced here which corresponds to the probability amplitude function in quantum mechanics. The theory of the statistical Green's functions and their relationships to the expectation values of the physical variables is also extensively developed. It is found that there exists a one-to-one correspondence between the formalism of Green's functions presented here and that used in field theory.</p>A Study of Lunar Surface Radio Communication2012-01-29T18:10:37-06:00https://digital.library.unt.edu/ark:/67531/metadc70459/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc70459/"><img alt="A Study of Lunar Surface Radio Communication" title="A Study of Lunar Surface Radio Communication" src="https://digital.library.unt.edu/ark:/67531/metadc70459/small/"/></a></p><p>Report discussing the problem of point-to-point radio communication on the moon. Equations and curves are presented to estimate power requirements in lunar communication systems. Consideration is given to ground wave attenuation over both layered and non-layered grounds, antenna ground losses in situations where ground screens are impractical, noise level estimates in the receiving system, and the effects on propagation of possible lunar ionospheres. An example of the calculation of required power for a particular communication system is given, and further studies are suggested.</p>