Topics: Radio Program, Radioactivity, County seats in Texas, Dairy products, Refrigerants, Nuclear physics,...
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5.0
audio
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Topics: Radio Program, Planetary science, Space plasmas, Sun, Republics, Concepts in physics, Law...
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18
Aug 5, 2014
08/14
by
Funny or Die
movies
eye 18
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Tyson gets sacked while he is inhaling helium
Topics: Funny or Die Video Archive, helium sacked sacking hit in, The, Balls, ouch, pain, chipmunk, funny,...
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0.0
Jan 11, 2021
01/21
by
Borja F C (Ferfly94)
data
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Este es un modelo personalizado de un bumper para la parte superior frontal del frame Helium de deDrones.
Topics: drone, dedrones_helium, thingiverse, dedrones, 3D Printing, stl
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9.0
May 18, 2020
05/20
by
Netradiosa
audio
eye 9
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Bespreking rondom die ewigheid
Topics: Kerk, Church, Godsdiens, Religion, Anthropology, Antropologie, Bekering, Repentance, Christologie,...
Topics: DTIC Archive, Sha, H J, PENNSYLVANIA STATE UNIV UNIVERSITY PARK, *SORPTION, CARBON TETRACHLORIDE,...
The photography and wave-lengths measurements and analysis of the TH and T2 spectrum proceeded largely as planned. Some work was also done on the D2 spectrum. In the analysis of complicated parts of the spectra a modification of the spectrum in a discharge through 200 mm helium and traces of T2, D2 or TH was very helpful. This modified spectrum showed only bands originating from vibrationless levels at a high rotational temperature. Attempts to obtain the spectrum of T2 free from TH and H2 so...
Topics: DTIC Archive, Dieke, G. H., JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF PHYSICS, *MOLECULAR...
Diode Pumped Alkali Lasers (DPALs) are a new type of laser that uses alkali metal vapor as a gain medium and a bu er gas to control the line shape and kinetics. While these systems were first demonstrated in 2003 [48] they have just recently been scaled to the kilowatt power levels in 2012 [18]. To achieve these powers, the design of the gain cell relied on a set of incomplete line shape and kinetic data. The current focus areas of DPAL research are the continued power scaling of the systems...
Topics: DTIC Archive, AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF...
A neutral rare gas laser has been built, and used to produce continuous wave output at several wavelengths in the mid-infrared region. The laser design is described , and results are presented of a parametric study of its operating characteristics. Mixtures of He-Ar, He-Kr, and He-Xe were used. The output power at each wavelength was monitored as a function of the discharge parameters, to determine the optimum working regimes. This General Document is a paper presented at the 8th Conference of...
Topics: DTIC Archive, Grant, Kenneth J, ELECTRONICS RESEARCH LAB SALISBURY (AUSTRALIA), *NEUTRAL, *GAS...
This volume contains unrefereed manuscripts scheduled for presentation at the Fifth International Conference on Electronic Properties of Two-Dimensional Systems to be held at Oxford, UK, 5-9 September 1983. In some cases abstracts or extended abstracts have been inserted for manuscripts not ready in time for the preparation of this volume. Referred manuscripts are to be published in a special issue of Surface Science scheduled for Spring 1984. The Proceedings of earlier conferences in this...
Topics: DTIC Archive, OXFORD UNIV (ENGLAND), *ELECTRONICS, *SYMPOSIA, *SYSTEMS ENGINEERING, *TWO...
Biochemical and hematologic analyses were performed on urine blood samples collected from three civilian divers following exposure for 120 minutes to hydrogen-oxygen, helium-oxygen and nitrogen-oxygen breathing mixtures at simulated pressures of 200 feet of sea water (FSWG). Normoxic environments were maintained except when symptoms of hypoxia, which developed in the subjects breathing nitrogen-containing mixtures, were relieved by additional oxygen. Biological sampling was possible from...
Topics: DTIC Archive, Tappan, D V, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *BREATHING GASES,...
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13
Dec 7, 2017
12/17
by
Netradiosa
audio
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Potgooi - Bybelse Meditasie 07 Desember 2017 Aangebied deur Dr Tienie Eilers
Topics: Kerk, Church, Godsdiens, Religion, Anthropology, Antropologie, Bekering, Repentance, Christologie,...
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0.0
Apr 17, 2016
04/16
by
Funny or Die
movies
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Topics: Funny or Die Video Archive, Adventure, Crumie, Episode 1, Fudge, Hank, Helium, Matt Taylor, Travis...
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4.0
audio
eye 4
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Topics: Radio Program, Emotional issues, Creationism, Reasoning, Evangelicalism, Seventh-day Adventist...
Topics: Radio Program, Geology, Investment, Payment systems, Mining, Income, Business law, School types,...
Topics: Radio Program, Physical cosmology, Astroparticle physics, Black Hills, NPR programs, Psychotherapy,...
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0.0
Jan 6, 2021
01/21
by
Justo Quinta (jquintaguisasola)
data
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Pieza para colocar la air unit de DJI en el frame Helium de Dedrones. Hay que quitar las dos columnas traseras. Esta con soporte de antena para el TBS Tracer.
Topics: stl, 3D Printer Parts, dedrones_helium, dji_fpv, thingiverse
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10.0
audio
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Topics: Radio Program, Planetary science, Space plasmas, Sun, Spaceflight, Concepts in physics, Technology,...
Topics: Radio Program, Planetary science, Space plasmas, Social psychology, American businesspeople, Sun,...
52
52
Oct 29, 2014
10/14
by
Funny or Die
movies
eye 52
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An in-depth look at a very popular, never-seen motion picture.
Topics: Funny or Die Video Archive, Big Helium Dog, Brian Lynch, Bryan Strang, John Dalton, Lorene...
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3.0
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xviii, 466 p. : 25 cm
Topics: Liquid helium -- Measurement -- Congresses, Reynolds number -- Measurement -- Congresses, Rayleigh...
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190
May 31, 2011
05/11
by
Guruswamy, Guru P.; Byun, Chansu
texts
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A modular process that can efficiently solve large scale multidisciplinary problems using massively parallel super computers is presented. The process integrates disciplines with diverse physical characteristics by retaining the efficiency of individual disciplines. Computational domain independence of individual disciplines is maintained using a meta programming approach. The process integrates disciplines without affecting the combined performance. Results are demonstrated for large scale...
Topics: RADIATIVE TRANSFER, ELECTRIC ARCS, GAS DENSITY, SHOCK TUBES, ELECTRON DENSITY (CONCENTRATION),...
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14
Jul 25, 2019
07/19
by
Atkins, Kenneth Robert, 1920-
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312 p. 23 cm
Topic: Liquid helium
Source: removedNEL
Topics: Radio Program, Physical cosmology, Astroparticle physics, Black Hills, Psychotherapy, Universe,...
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1.0K
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A COLLECTION DEVOTED TO PROBLEMS OF SPACE EVOLUTION, AS WELL AS THE POSSIBILITIES OF EXPORT AND IMPORT OF LIFE IN SPACE IS PRESENTED. A CRITICAL EVALUATION IS INCLUDED OF SEVERAL OF THE METHODS WHICH EXIST AT THE PRESENT TIME FOR DETECTING LIFE OUTSIDE THE EARTH AND THE POSSIBILITY OF SURVIVAL OF LOWER ORGANISMS IN EXPERIMENTAL CONDITIONS SIMULATING THOSE IN OUTER SPACE.
Topics: ATMOSPHERIC MODELS, HELIUM, MASS SPECTROMETERS, NITROGEN, OGO-6, OXYGEN, CHEMICAL COMPOSITION,...
A computer program has been developed which follows Light's phase-space theory of three-body ion-molecule reactions. The program predicts cross sections for 10 possible reaction branches as functions of the relative kinetic energy of the colliding particles in the range from thermal energies up to 20 Ev. It also yields partial cross sections for the populations of the vibrational levels of the diatomic molecule in the product channel. Included in the results are reactions for the following...
Topics: DTIC Archive, Wolf, Fred A, GENERAL DYNAMICS SAN DIEGO CA GENERAL ATOMIC DIV, *IONS, *DIATOMIC...
An experimental and theoretical investigation was conducted to determine the degree of jet boundary simulation obtainable for underexpanded jets exhausting into a quiescent atmosphere. Tests were conducted with nitrogen, carbon dioxide, and helium gases, and theoretical boundaries were obtained by a method-of-characteristics solution. It was determined that the method-of-characteristics solution accurately represents the experimental jet boundaries and that the matching of simulation parameters...
Topics: DTIC Archive, Herron, R D, ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN, *BOUNDARY LAYER,...
A small cryogenically cooled pump has been developed which is capable of pumping all gases including helium and hydrogen. Its low base pressures makes it suitable for use in ultrahigh vacuum systems, and its high pumping speed for all gases is maintained up to pressures in the 10 to the -6th power torr range. The pump operates by sorbing the normally noncondensable gases in a layer of argon cryofrost which is predeposited on its liquid-helium-cooled surface. As with any sorption pump, the...
Topics: DTIC Archive, Dawbarn, Ronald, ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN, *CRYOPUMPING,...
An experimental investigation was conducted to determine the characteristics of ejector systems using very large cylindrical diffusers. Tests were conducted with nitrogen, carbon dioxide, and helium gases in systems having diffuser cross section to nozzle throat area ratios from 950 to 15,300. Limited effects of ejector nozzle configuration, diffuser length, system size, and diffuser wall cooling were investigated. Excellent system performance was obtained, with test cell altitudes of 250,000...
Topics: DTIC Archive, Herron, R D, ARO INC ARNOLD AFS TN, *ALTITUDE CHAMBERS, *DIFFUSERS, *JET PUMPS,...
The range of a previously developed capillary-flow viscometer has been extended to -100C, and the techniques of obtaining and determining the attainment of steady state have been improved. The viscosities of nitrogen, helium, hydrogen, and argon have been measured by an absolute method from -100 or -90 to 25C and up to 150-175 atm (250 atm for N2 at 25C). The accuracy is estimated to be 0.1 - 0.2%, but is somewhat worse for Ar at -100C. A number of empirical and theoretical analyses of the...
Topics: DTIC Archive, Gracki, J A, PURDUE UNIV LAFAYETTE IN PROJECT SQUID HEADQUARTERS, *NITROGEN,...
The main subject areas covered under the contract are the following: Electronic phase transitions in solids; Theory of the inhomogeneous electron gas; Fermi surface images; Many electron effects in simple metals; and Disordered structures and metal defects.
Topics: DTIC Archive, Kohn, Walter, CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF PHYSICS, *SOLID STATE...
The report deals with the engineering aspects of preparing the payload and launching Black Brant rocket AAF-VB-32 at Churchill Research Range on 3 March 1971. The payload included ten experiments to measure energetic particles, auroral emissions, electron temperature and energy distribution, rotational temperatures and number densities of atomic oxygen, molecular oxygen, nitrogen and helium, ambient temperatures, electric fields and magnetic field variations, plasma characteristics, and the...
Topics: DTIC Archive, NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) SPACE RESEARCH FACILITIES...
Contents: Vulnerability Analysis and Nuclear Hardening of Laser Gyro Circuit Assemblies; Superflash X-Ray Test; Hardened Laser Angular Rate Sensor; Paper 'The Laser Gyro'; and Predicted Effects of X-Radiation Upon the Glow Discharge and Output Signal of a Helium-Neon Laser.
Topics: DTIC Archive, Johnson, R R, HONEYWELL INC MINNEAPOLIS MN GOVERNMENT AND AERONAUTICAL PRODUCTS DIV,...
The subject program is part of a continuing effort to identify distinct mechanisms that contribute to gun barrel wear and erosion. The chemical effect of a carburizing atmosphere in a gun tube was the main topic for investigation in this program. Experiments were conducted in the Shock Tube Gun (STG), a ballistic compressor, designed and developed by Calspan Corporation. This facility can compress mixtures of pure gases to simulate propellant gas flow condtions and cycle time experienced in...
Topics: DTIC Archive, Morphy, C C, CALSPAN CORP BUFFALO NY, *CARBURIZING, *CRACK PROPAGATION, *EROSION,...
A Honda Electro Gyro-Cator land navigation system was evaluated under laboratory and field conditions to determine land navigation accuracies. Laboratory evaluations determined system characteristics such as static drift, frequency response, phase shift, and input-output characteristics (scale factors, bias, and hysteresis). Field evaluations determined land navigation accuracies of approximately 3.5% RMS error per distance traveled.
Topics: DTIC Archive, McDaniel, S. G., ARMY MISSILE COMMAND REDSTONE ARSENAL AL GUIDANCE AND CONTROL...
This report documents the design, construction, and implementation of a time interval analyzer (TIA). The TIA is a precision counter that measures the dynamic variation in the time intervals (i.e., frequency) of a signal. The helium-neon (HeNe) laser signal from the servo mirror control circuitry of the interferometer provides a nearly constant frequency source. The HeNe signal frequency is directly proportional to the interferometer mirror velocity. A constant velocity is crucial for the...
Topics: DTIC Archive, Combs, R J, CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING...
Air sparging generally involves the injection of air into an aquifer through vertical or horizontal wells. In situations where contaminant vapor recovery is necessary (e.g., as required by regulation, or in situations where vapor migration could cause adverse impacts), air sparging systems are coupled with soil vapor extraction (SVE) systems. Historically, practitioners have installed air sparging systems to: (1) treat immiscible contaminant source zones at or below the capillary fringe; (2)...
Topics: DTIC Archive, Leeson, Andrea, BATTELLE COLUMBUS OH, *AIR FLOW, *AQUIFERS, *WATER TREATMENT, *SOIL...
Work on pyrolytic or vapor-deposited graphite under this program was limited to mechanism studies and property measurements. Methods of depositing high quality pyrolytic graphite are described with evidence as to the cause of conical growths and delaminations within the structure of the material. Results are presented on the use of hydrogen, helium and argon as diluents, and on the use of chlorine as an additive in the pyrolytic process. The mean deposition rate is shown to be a function of...
Topics: DTIC Archive, NATIONAL CARBON CO PARMA OH, *GRAPHITED MATERIALS, TEMPERATURE, CARBON, HYDROGEN,...
190
190
Jun 3, 2011
06/11
by
Wolpert, David H.; Bieniawski, Stefa
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Often adaptive, distributed control can be viewed as an iterated game between independent players. The coupling between the players mixed strategies, arising as the system evolves from one instant to the next, is determined by the system designer. Information theory tells us that the most likely joint strategy of the players, given a value of the expectation of the overall control objective function, is the minimizer of a function o the joint strategy. So the goal of the system designer is to...
Topics: LININGS, PNEUMATICS, BURST TESTS, CARBON FIBERS, STRUCTURAL ANALYSIS, PERMEATING, HELIUM, HYDROGEN,...
The effect of gases having different thermal conductivities on the thermal insulation of handgear was investigated. Experimental mittens with special plastic spacer interliners of various thicknesses were sealed between gas impermeable outer and inner shells and filled first with room air (as control), then various experimental gases, and thermal insulation measured on a copper hand. Experimental gases included carbon dioxide, Freon-12, and helium. Comparative results are presented in terms of...
Topics: DTIC Archive, AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH, *PROTECTIVE...
Various problems in voice communication systems found in operations underwater and in outer space are considered. Since the production of speech is basic to these problems, the major part of the article is devoted to factors affecting vocal production. Examples are given of special problems which arise when the voice communication situation involves highly restrictive environmental factors such as those encountered by deep sea divers, swimmers, and personnel within under-the-sea habitats or...
Topics: DTIC Archive, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *SPEECH, *VOICE COMMUNICATIONS,...
In order to determine the available test time in a helium driven shock tunnel, an interface detection system was developed to indicate the arrival of helium driver gas at the test section. This is done by exciting the gas at the test section with a high energy electron beam and spectroscopically analyzing the resulting fluorescence to determine the helium concentration. Relative values of helium and air emission intensities are calculated and compared with experimental data from both static and...
Topics: DTIC Archive, Whetsel, R G, ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN, *HELIUM, *SHOCK...
The goal of this program is to determine the radiative lifetime and the collisional quenching rate coefficients for the XeF and KrF upper laser levels using a state selective, laser excited fluorescence technique. Details of the experimental procedure were described in our semi-annual report. During this reporting period, we have determined the XeF(B1/2) radiative lifetime by monitoring the decay of the 353 nm XeF(B1/2 to X) fluorescence as a function of pressure. Preliminary collisional...
Topics: DTIC Archive, Center, R E, MATHEMATICAL SCIENCES NORTHWEST INC BELLEVUE WA, *FLUORIDES, *KRYPTON,...
This report describes a unique portable system for measuring attenuation at 30 MHz over a range of 50 dB to an accuracy of 0.005 dB per 20 dB. This system does not require any reference standard. A SQUID (Superconducting Quantum Interference Device) with its associated instrumentation is used to determine attenuation in terms of Bessel Function Zeros. A SQUID is a loop of superconducting metal closed by a weak point contact called a Josephson junction, operating in liquid helium. The system...
Topics: DTIC Archive, Adair,Robert T, NATIONAL BUREAU OF STANDARDS BOULDER COLO ELECTROMAGNETICS DIV,...
The Prototype MK 12 SSDS, Helium-Oxygen System was evaluated to test the ability of the system to support a diver performing sustained heavy work, and to establish the life expectancy of the carbon dioxide absorbent bed. During graded exercise the divers' heart rate and helmet CO2 levels were measured. During cannister studies, the cannister effluent was continuously monitored for CO2. Analysis of the data revealed that the system can support a diver performing heavy work (3.0 L/Min O2...
Topics: DTIC Archive, O'Bryan,Robert K, NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FLA, *DIVER EQUIPMENT,...
Experiments have been run and a comprehensive theoretical model developed which have enabled a more complete characterization of the ion plasma electron gun. The experiments provided important high current data on the operation of the gun and of the thin-wire discharges. The theoretical model included consideration of fifteen different reactions between helium atoms and ions and electrons and calculated the particle fluxes and the electric potential as a function of position in the high-voltage...
Topics: DTIC Archive, Clark, Jr., William M., HUGHES RESEARCH LABS MALIBU CA, *LASER PUMPING, *ION BEAMS,...
A compact atmospheric pressure CO2 laser utilizing a double-discharge technique has been constructed and operated at moderate repetition rates. With the addition of small amounts of hydrogen and carbon monoxide to the He-CO2-N2 gas mixture, sealed operational lifetimes exceeding 2 x ten to the 6th power pulses have been obtained. Operating in this mode, the output energy is about 250 mJ/pulse at repetition frequencies of 40-50 pulses/s.
Topics: DTIC Archive, Pace,P, DEFENCE RESEARCH ESTABLISHMENT VALCARTIER (QUEBEC), *CARBON DIOXIDE LASERS,...
The influence of microstructure, slip behavior, and gaseous environment on the fatique crack propagation of Ti alloys has been investigated. Large grain or single crystal material has been used extensively in order to ensure that the crack-tip plasticity is smaller than the scale of the microstructure. As a result, extensive Stage I crack propagation occurs. The experimental relationships between crack-tip plasticity, orientation of the crack plane to the stress axis, fractography, and the...
Topics: DTIC Archive, Koss, Donald A., MICHIGAN TECHNOLOGICAL UNIV HOUGHTON DEPT OF METALLURGICAL...
Topics: DTIC Archive, Dahm, T J, ASTRON RESEARCH AND ENGINEERING SUNNYVALE CA, *INTERIOR BALLISTICS,...
Participation of Scientists from U.S.A. at XVIII International Workshop on Condensed Matter Theories held at Valencia, Spain, June 6-10, 1994. The proceedings will be published in vol. 10 of Condensed Matter Theories. (AN)
Topics: DTIC Archive, Malik, F. B., SOUTHERN ILLINOIS UNIV AT CARBONDALE, *MOLECULAR STRUCTURE,...
