publicationDate stringlengths 10 10 | abstract stringlengths 0 37.3k | title stringlengths 1 5.74k | doi stringlengths 11 47 ⌀ |
|---|---|---|---|
1990-01-01 | This paper discusses the design and construction of an apparatus to measure the ineffectiveness of regenerators used for pulse tube refrigerators. Because of the fairly large mass flow rates which occur in pulse tube refrigerators, the regenerator ineffectiveness must be made quite small. The apparatus described here a... | An Apparatus for the Measurement of Regenerator Performance in Pulse Tube Refrigerators | 10.1007/978-1-4613-0639-9_145 |
1990-01-01 | The present paper describes briefly the apparatus and the testing methods to define optimal conditions for the use of strain gages at cryogenic temperatures. The power dissipated per unit area may induce serious errors in interpreting results if suitable corrections are not made. The paper gives results on the apparent... | Strain Analysis at Cryogenic Temperatures: Self-Heating Effect and Linearization of the Apparent-Strain Curve | 10.1007/978-1-4613-0639-9_190 |
1990-01-01 | This chapter describes and illustrates the major types of containers used to transport and store compressed and liquefied gases, including those liquefied at very low or cryogenic temperatures. To keep pace with developments in the industry, the Compressed Gas Association, through its technical committees, continually ... | Compressed Gas Containers and Appurtenances | 10.1007/978-1-4613-0673-3_4 |
1990-01-01 | This chapter introduces the substances designated as compressed and liquefied gases in descriptive terms, and mentions some uses and other general considerations which may provide useful background information, especially to anyone unfamiliar with the field. Included are descriptions of the various groupings and famili... | Compressed and Liquefied Gases Today | 10.1007/978-1-4613-0673-3_1 |
1990-01-01 | He II has played and will continue to play a significant role in space, both as a cryogen and as a subject of experiment in its own right. Major applications include the completed Infrared Astronomical Satellite and the Spacelab 2 Infrared Telescope missions. Planned missions include the NASA Cosmic Background Experime... | Science and Applications of HE-II in Space | 10.1007/978-1-4613-0639-9_9 |
1990-01-01 | Fermilabs superconducting accelerator, the Tevatron has been operational for over six years. The Tevatron is a proton/antiproton collider used in high energy physics research. The cryogenic system is a hybrid design, consisting of a 4000 liter/hour central helium liquefier and twenty four 1 kw satellite refrigerators. ... | Current Operating Experience and Upgrade Plans of the Tevatron Cryogenic System | 10.1007/978-1-4613-0639-9_110 |
1990-01-01 | Thermal performance measurements of a 100 percent polyester multilayer insulation (MLI) system for the Superconducting Super Collider (SSC) were conducted in a Heat Leak Test Facility (HLTF) under three experimental test arrangements. Each experiment measured the thermal performance of a 32- layer MLI blanket instrumen... | Thermal Performance Measurements of a 100 Percent Polyester MLI System for the Superconducting Super Collider; Part I: Instrumentation and Experimental Preparation (300K - 80K) | 10.1007/978-1-4613-0639-9_58 |
1990-01-01 | Recent advances in sorption refrigeration have resulted in concept designs which offer greatly improved performance. The predicted input power required to drive a four-stage cryocooler producing 1 W of cooling at 25 K is reduced from 1160 W for a conventional sorption refrigerator to 195 W for an advanced concept sorpt... | High Efficiency Sorption Refrigerator Design | 10.1007/978-1-4613-0639-9_163 |
1990-01-01 | A test apparatus has been developed for studying the ineffectiveness of thermal regenerators as an essential part of the present new regenerator materials research and development program. Magnetic materials Er_3Ni and Er_0.5Dy_0.5Ni_2 are used as regenerator materials to make a comparison with lead between 4 and 35 K.... | Measurement of Ineffectiveness on Regenerators Packed with Magnetic Regenerator Materials Between 4 and 35 K | 10.1007/978-1-4613-0639-9_142 |
1990-01-01 | NASA’s Lewis Research Center (LeRC) is involved in the development and validation of analytical models which describe the fluid dynamic and thermodynamic processes associated with the storage, acquisition and transfer of subcritical cryogenic fluids in low-gravity. These technologies are considered enabling for future ... | Cold-Sat: A Technology Satellite for Cryogenic Experimentation | 10.1007/978-1-4613-0639-9_199 |
1990-01-01 | Cryopreservation is the process by which viable tissues are stored at ultra-low temperatures (-196°C) in liquid nitrogen. Metabolism is suspended and evidence suggests that genetic stability is maintained. The following provides a brief account of cryopreservation methodology (see also Withers, 1987; Benson and Withers... | The Control by Cryopreservation of Age-Related Changes in Plant Tissue Cultures | 10.1007/978-1-4684-5760-5_15 |
1990-01-01 | The speed, reliability and, noise characteristics of most semiconductor devices improve with cooling to cryogenic temperatures. In addition, certain unique capabilities become available at these temperatures through the use of superconducting electronics. We discuss progress in the development of the technology for the... | Microminiature Refrigerators for Joule-Thomson Cooling of Electronic Chips and Devices | 10.1007/978-1-4613-0639-9_157 |
1990-01-01 | An extended form of the modified Enskog theory (MET) was combined with a modified volume-translated Peng-Robinson equation of state for calculating shear viscosity of mixtures of cryogenic interest. The approach presented here is an extension of the method of Sheng et al . from pure gases to mixtures without using any ... | Calculation of Shear Viscosity of Mixtures by Means of an Equation of State | 10.1007/978-1-4613-0639-9_181 |
1990-01-01 | This paper discusses retractable gas cooled leads for the ASTROMAG experiment superconducting solenoid which will operate on the space station. The ASTROMAG magnet will be cooled by superfluid helium pumped from a storage tank by a fountain effect pump. Since it is desirable to keep the helium consumption low, retracta... | Retractable Gas Cooled Leads for Astromag | 10.1007/978-1-4613-0639-9_94 |
1990-01-01 | Helium | 10.1007/978-1-4613-0673-3_30 | |
1990-01-01 | A newly developed system to measure the cryogenic creep is presented. The system adopts a laser light interference method, thereby making it possible to detect an absolute value of microscopic movement of a specimen at cryogenic temperature without any calibrations on both temperature and strain. Preliminary tests of t... | Cryogenic Creep Measurement System Using Laser Light Interference | 10.1007/978-1-4613-0639-9_189 |
1990-01-01 | The equilibrium pressures and compositions have been measured for a system of finely powdered manganese nitride (Mn_xN_y, with x and y variable) and nitrogen gas at 650, 700, 800, and 850°C for various nitrogen loadings. Pressures ranged from less than 0.02 MPa at 650°C to 6.38 MPa at 850°C. Analysis of the test result... | Sorption J-T Refrigeration Utilizing Manganese Nitride Chemisorption | 10.1007/978-1-4613-0639-9_164 |
1990-01-01 | Recent trends in state-of-the-art infrared space-based detection instruments favor larger focal planes for increased resolution without requiring excessive scan rate, unrealistically short sample times, and large apertures. By nature, longer wavelength IR detectors also require cryogenic cooling for useful operation. T... | Cooling of Very Large Focal Plane Arrays | 10.1007/978-1-4613-0639-9_104 |
1990-01-01 | This paper reviews the development of the three types of pulse tube refrigerators: basic, resonant, and orifice types. The principles of operation are given. It is shown that the pulse tube refrigerator is a variation of the Stirling-cycle refrigerator, where the moving displacer is substituted by a heat transfer mecha... | A Review of Pulse Tube Refrigeration | 10.1007/978-1-4613-0639-9_143 |
1990-01-01 | He II cooling for Nb Ti superconducting alloys was pioneered in France 15 years ago and has been extensively developped to an industrial level by using the opportunity of large projects in which a field level around 10 Teslas was required in conjonction with very stringent operational conditions. This development was d... | Tore Supra and He II Cooling of Large High Field Magnets | 10.1007/978-1-4613-0639-9_8 |
1990-01-01 | Hydrogen | 10.1007/978-1-4613-0673-3_31 | |
1990-01-01 | The Tore Supra refrigerator is the fifth machine in the world operating at approximately 1.8 K but with a refrigeration power of 320 W at 1.75 K. Its principal characteristics are: the compression of helium at low temperature, a large number of operating modes, an entirely automatic control system. | Operational Experience with the 1.75 K Tore Supra Refrigerator | 10.1007/978-1-4613-0639-9_32 |
1990-01-01 | The international cooperation on the characterization of relevant properties of superconducting materials and those of cryogenic structural materials necessary for the construction of superconducting equipments are successfully proceeding under the framework of VAMAS intercomparison. The progress and present status of ... | The Vamas Intercomparison in the Area of Superconducting and Cryogenic Structural Materials | 10.1007/978-1-4613-9880-6_1 |
1989-12-01 | For the trace analysis of volatile components in a nonvolatile matrix, the headspace sampling technique offers the potential to lower detection limits in GC/FTIR experiments. Optimization of chromatographic operating parameters for Headspace GC/FTIR is discussed, aiming at the best compromise between maximum chromatogr... | Optimization in equilibrium headspace GC/FTIR | 10.1007/BF02260692 |
1989-12-01 | Unification of load bearing structures of control systems for cryogenic equipment with a view to the requirements of technical aesthetics | 10.1007/BF01147853 | |
1989-11-01 | 1. Lamellar chemical inhomogeneities in hot-worked alloys bring about kinetic differences in the aging of these regions. 2. The formation of austenite in the bands at different temperatures might be used to develop articles which must function at cryogenic temperatures. | Effect of inhomogeneities on aging processes in corrosion-resistant maraging steels | 10.1007/BF00795565 |
1989-09-01 | High-frequency vibrations of gas cryogenic machines | 10.1007/BF01156020 | |
1989-06-01 | Stand and method of measuring the vibration acceleration parameters of gas cryogenic machines | 10.1007/BF01156215 | |
1989-05-01 | Aggregate modeling of the efficiency and reliability of cryogenic systems | 10.1007/BF01155861 | |
1989-05-01 | Use of tension springs in the drive of the displacement system of a cryogenic cooler | 10.1007/BF01155858 | |
1989-04-01 | Among a number of biochemical disturbances occurring in the acute phase of brain insults, the destruction of membrane phospholipids and its consequences on the function of membrane-bound proteins is likely to be one of the most important. In the cryogenic type of injury which is classically considered as a relevant ani... | Membrane damage in acute brain trauma | 10.1007/BF02333611 |
1989-04-01 | The responses of single goldfish olfactory bulb mitral cells were studied by extracellular recordings before and during cryogenic blockade of the efferent, centrifugal pathways in the ipsilateral olfactory tract. In each experiment the same odour was presented 40 times before and then 40 times during cooling. Each stim... | The effects of cryogenic blockade of the centrifugal, bulbopetal pathways on the dynamic and static response characteristics of goldfish olfactory bulb mitral cells | 10.1007/BF00247946 |
1989-02-01 | Bond between a reinforcement bar and concrete at normal and cryogenic temperatures | 10.1007/BF00730707 | |
1989-02-01 | Vibroprotection as a method of reducing transport losses of cryogenic liquids | 10.1007/BF01245852 | |
1989-02-01 | The substantial influence of liquid-nitrogen vaporization from Kh-34B vessels on cryogenic precipitates, the coating of screens with an adsorbent dust, and the destruction of the intermediate SVTI material has been experimentally established. Methods are proposed and have been tested to eliminate the effects of these f... | Determining and eliminating factors impairing the efficiency of cryogenic vessels | 10.1007/BF00870576 |
1989-01-01 | Advanced composite structures are currently being utilized in numerous cryogenic systems. They offer low thermal conductivity, high strength and stiffness, lightweight, low outgassing, integral fittings, and other advantages. Several types of fibers and resins are available to meet extreme structural and thermal requir... | Advanced Composite Structures for Superconducting Super Collider | 10.1007/978-1-4613-0841-6_49 |
1989-01-01 | The cooling of cryogenic liquids by the pumping-out of vapor is considered theoretically, taking account of the variability of the thermodynamic properties, the heat fluxes to the cryostatting zone, and the specific heat of the vessel walls. | Cooling of cryoagents by the pumping-out of vapor | 10.1007/BF00870462 |
1989-01-01 | The laser spectroscopy of leptonic atoms is of interest because of the simplicity of the atoms. Leptons possess no known structure. Unlike the hydrogen atom with its complicated and poorly understood proton, the behavior of leptonic atoms should in principle be calculable to much greater precision. In the case of muoni... | Laser Spectroscopy of Positronium and Muonium | 10.1007/978-3-642-88421-4_14 |
1989-01-01 | The SSC is an application of superconductivity on a scale vastly larger than any before. Its two collider storage rings are formed of some 10,000 superconducting magnets of many types, all of which must be maintained below the chosen operating temperature of 4.35 K under a wide variety of operating conditions. Thus an ... | SSC Refrigeration System Design Studies | 10.1007/978-1-4613-0841-6_28 |
1989-01-01 | To study the operation of the Superconducting Super Collider (SSC) cryogenic system during transient operating conditions, we have developed and programmed in FORTRAN, a time-dependent, nonlinear, homogeneous, lumped-parameter simulation model of the SSC cryogenic system. This dynamic simulator has a modular structure ... | Dynamic Modeling and Simulation of the Superconducting Super Collider Cryogenic Helium System | 10.1007/978-1-4613-0841-6_29 |
1989-01-01 | Multilayer insulation (MLI) is employed in cryogenic devices to control the heat load of those devices. The physics defining the thermal performance of an MLI system is extremely complex due to the thermal dynamics of numerous interdependent parameters which in themselves contribute differently depending on whether bou... | Multilayer Insulation (MLI) in the Superconducting Super Collider — A Practical Engineering Approach to Physical Parameters Governing MLI Thermal Performance | 10.1007/978-1-4613-0841-6_45 |
1989-01-01 | Dioscorea belongs to the monocotyledons, family Dioscoreaceae, subfamily Dioscoreoideae. It comprises ca. 600 species and is divisible into numerous sections according to stem twining, leaf morphology, inflorescences, seed wings, bulbil formation, tuber morphology and chemical content (Dahlgren et al. 1985). Bulbils oc... |
Dioscorea: In Vitro Culture and the Micropropagation of Diosgenin-Containing Species | 10.1007/978-3-642-73617-9_10 |
1989-01-01 | The date palm [ Phoenix dactylifera L. (2n = 36)] is one of the most important members of the Palmae (Arecaceae) family. There are 11 other species in the genus Phoenix , some of which are used as ornamentals, e.g. P. canariensis Chabaud, whilst P. sylvestris (L.). Roxb. is cultivated in India as a source of sugar. All... | Date Palm (Phoenix dactylifera L.) | 10.1007/978-3-642-61535-1_9 |
1989-01-01 | The technical and economical advantages of the underground storage of petroleum products have, over the last few decades, made it possible to provide a particularly attractive alternative to open-air storage tanks for most petroleum products. | Underground Storage of Liquefied Gases at Low Temperature | 10.1007/978-94-009-0993-9_15 |
1988-11-01 | Effect of cryogenic temperatures on the static and cyclic strength of the parent metal and welded joints in 1201 aluminum alloy | 10.1007/BF01530141 | |
1988-11-01 | Strength of welded joints of glass with metal at cryogenic temperatures | 10.1007/BF01530143 | |
1988-10-01 | Dynamic characteristics of turbine-type flowmeters for cryogenic fluids | 10.1007/BF00864879 | |
1988-09-01 | Superconductors and Beyond: Cryogenics in Industry | 10.1007/BF03258560 | |
1988-09-01 | Pressure fluctuations in cryogenic systems | 10.1007/BF01147284 | |
1988-09-01 | Microbiological Materials Processing | 10.1007/BF03258559 | |
1988-08-01 | Cryogenic methods of evacuation: Operating experience and prospects | 10.1007/BF01149203 | |
1988-06-01 | Experimental cryogenic effects on the coronary arteries | 10.1007/BF00842157 | |
1988-04-01 | Reduction of vibrations in gas cryogenic machines | 10.1007/BF01837181 | |
1988-04-01 | Methods for raising the efficiency of cryobiological vessels with liquid nitrogen are proposed and realized, and a method for calculating their heat-shielding is developed and tested. | Efficiency of “shieldless” method of employing the cold of vapors in cryogenic vessels with a wide neck | 10.1007/BF00871115 |
1988-03-01 | Nonsteady-state evaporation of a cryogenic liquid into the atmosphere | 10.1007/BF00749192 | |
1988-03-01 | Combustion of gasless systems at cryogenic temperatures | 10.1007/BF00749193 | |
1988-03-01 | A system has been developed for rapid measurement of the torsional properties of organic-matrix composite materials at temperatures from 4 to 295 K. It offers ease of construction, simplicity of specimen design, small specimen size, rapid specimen turnaround, and low consumption of cryogens. In addition to providing qu... | Strain-controlled torsional test method for screening the performance of composite materials at cryogenic temperatures | 10.1007/BF01153974 |
1988-02-01 | 1. In the temperature range with which deformation does not cause formation of α-phase for Fe-Ni-Co alloys, a reduction is observed in the thermal linear expansion nature is evidently connected with the Invar anomaly. 2. In alloy 29NK at −70°C as a result of extension α-phase occurs (30% in the overall volume and 59% a... | Effect of deformation on the structure and properties of alloys of the system Fe-Ni-Co | 10.1007/BF00777823 |
1988-02-01 | Unilateral cryogenic lesions of the brain were produced in mice by applying the face of the brass rod cooled in liquid nitrogen to the exposed parietal bone. As a result of the cryogenic lesion, the mast cells in the dura mater underlying the parietal bone were disrupted. This disruption of dural mast cells was accompa... | Cryogenic lesions induce a mast cell-dependent increase in cerebral cortical histamine levels in the mouse | 10.1007/BF03160134 |
1988-01-01 | The HERA-superconducting proton ring magnet system, part of a 820 GeV proton/30 GeV electron colliding beam facility at DESY, Germany, will be cooled by a helium liquefier/refrigerator as described previously. The refrigerator has been specified by DESY, detailed design, fabrication and assembly have been executed by i... | Performance Test of the Hera 3 × 6500 w Helium Refrigeration Plant | 10.1007/978-1-4613-9874-5_68 |
1988-01-01 | The SCRIBE (Stratospheric CRyogenic Interferometer Balloon Experiment) system was flown August 10, 1986, over eastern New Mexico. Because the SCRIBE sensor is a liquid nitrogen cooled interferometer, absolute radiance data were obtained with good resolution (0.1 cm^−1) and high sensitivity. The normal field of view was... | Observation of upwelling radiation by SCRIBE | 10.1007/BF01349803 |
1988-01-01 | Developing a cooling method of far-infrared detectors in micro-gravity circumstances in the 0.1 K region, we have designed a new adiabatic demagnetization cryostat and improved a fabrication method of magnetic salt. The cryostat was designed for laboratory use (under 1 G), however most thermal conditions were planned f... | New Design of an Adiabatic Demagnetization Cryostat for Space Application | 10.1007/978-1-4613-9874-5_106 |
1988-01-01 | A multipurpose cryogenic testing facility was constructed and became operational in 1986 at Fermilab. It consists of a standard Tevatron satellite refrigerator and 450 liter subcooling dewar housed within a building adjacent to a Tevatron refrigerator. A 11 m by 15 m high bay contains power supplies necessary to power ... | Cryogenic Testing at the SSC String Test Facility | 10.1007/978-1-4613-9874-5_70 |
1988-01-01 | We are developing a quench detecting technique using a dual-core optical fiber. The fiber has two single-mode optical cores in one fiber. Using this technique, we have demonstrated that a temperature rise of 1.0 K at 4.2 K, so that, a quench in a superconducting magnet was detectable. We verified that an electromagneti... | Quench Detection of Superconducting Magnet by Dual-core Optical Fiber | 10.1007/978-1-4613-9874-5_35 |
1988-01-01 | The cryogenic system for the Mirror Fusion Test Facility (MFTF) is a 14-kW, 4.35-K helium refrigeration system that proved to be highly successful and cost-effective. We were able to meet all operating objectives, while remaining within a few percent of our initial cost and schedule plans. The management approach used ... | The Mirror Fusion Test Facility Cryogenic System — Performance, Management Approach, and Present Equipment Status | 10.1007/978-1-4613-9874-5_71 |
1988-01-01 | The TOPAZ superconducting solenoid is cooled with forced two phase helium since it is large in size (2.9 m in diameter, 5.1 m in length) and a thin configuration. A cooling pipe, 18 mm in diameter and 150 m in total length, is wound around the superconducting coil. The relation between the helium mass flow rate and pre... | Pressure Drop in Forced Two Phase Cooling of the Large Thin Superconducting Solenoid | 10.1007/978-1-4613-9874-5_66 |
1988-01-01 | The cryogenic system of the AMY superconducting solenoid magnet was designed, constructed and tested. The coil has a diameter of 2.5 m, a length of 1.5 m and a cold mass of 17 tons (CU/SUS). It iscooled with a pool-boiling method by immersion in a liquid helium bath of 500 liters. In the initial cooling test, the magne... | Cryogenic System of a 3 Tesla Superconducting Solenoid for the AMY Particle Detector at Tristan | 10.1007/978-1-4613-9874-5_67 |
1988-01-01 | The superconducting RF cavities (32 × 5 cell) will be installed in TRISTAN electron-positron collider at KEK to upgrade the electron-positron beam energy up to 33 GeV × 33 GeV. Two 5-cell cavities are coupled together, enclosed in a cryostat and cooled by liquid helium pool boiling. Cryogenic system for the superconduc... | Cryogenic System for Tristan Superconducting RF Cavity | 10.1007/978-1-4613-9874-5_75 |
1988-01-01 | The realization that water ice is the major constituent of comets, the satellites of the outer planets and their rings particles, and of the icy grain mantles in dense interstellar clouds, prompted us to study in detail the properties of water ice at very low temperatures, with an emphasis on its ability to trap variou... | The Structure and Dynamics of Amorphous Water Ice and Trapping of Gases in It | 10.1007/978-94-009-3033-9_9 |
1988-01-01 | The proton storage ring of HERA will contain 422 superconducting dipole magnets^1 and 224 superconducting quadrupole magnets.^2 At the newly constructed HERA magnet measurement facility, each of the superconducting magnets will be individually tested before being installed in the 6-km ring tunnel. This paper describes ... | Cryogenic Experience at the Hera Magnet Measurement Facility | 10.1007/978-1-4613-9874-5_69 |
1988-01-01 | The use of cryogenic temperatures is an option being considered more frequently as a means to enhance the performance of electronic systems. A basic issue in obtaining the benefits of lower operating temperature is integrating the cooling system with the electronic system—what does the electronics community need and wh... | Refrigeration for Electronics: Summary of a Panel Session | 10.1007/978-1-4613-9874-5_83 |
1988-01-01 | Current, amplification, output power and frequency limits of field-effect transistors (FETs) are determined by both the carrier concentration and the carrier transport properties (mobility and velocity) in the channel. In GaAs MESFETs the current conducting channel itself is doped with shallow impurities up to levels o... | Shallow and Deep Impurity Investigations: The Important Step Towards a Microwave Field-Effect Transistor Working at Cryogenic Temperatures | 10.1007/978-1-4684-5553-3_11 |
1988-01-01 | In support of NASA’s Superfluid Helium On-Orbit Transfer (SHOOT) Flight Experiment, two pumping approaches are being evaluated. NASA-GSFC is conducting tests on the thermomechanical (TM) pump while NASA-ARC is sponsoring tests on a centrifugal pump at the NBS Cryogenic Laboratory. For either of these approaches, a comm... | Acquisition System Testing with Superfluid Helium | 10.1007/978-1-4613-9874-5_110 |
1988-01-01 | A computer control system for the helium refrigerators of the TRISTAN detector magnets (VENUS, TOPAZ, and AMY) was designed and constructed for the purpose of centralized and automatic operation. The control system of these helium refrigerators is programmed to do a series of procedure automatically in order to simplif... | Control System for Helium Refrigerators of Tristan Detector Magnets | 10.1007/978-1-4613-9874-5_133 |
1988-01-01 | The discovery of superconductivity with T_c > 77 K (liquid nitrogen boiling temperature) is potentially of great importance for large scale electric utility applications such as the transmission and storage of electrical energy. Superconducting magnetic energy storage (SMES) is already a promising technology for electr... | The Potential Impact of Developing High T_C Superconductors on Superconductive Magnetic Energy Storage (SMES) | 10.1007/978-1-4613-9874-5_9 |
1988-01-01 | Cryogenic instrumentation is becoming more common in the hospital environment. Led by MRI magnets, cryocoolers as well as large amounts of liquid helium and liquid nitrogen are being used in both mobile and fixed installations. Liquid helium is also necessary in the use of SQUID instrumentation. Different methods of at... | Cryogenic Requirements for Medical Instrumentation | 10.1007/978-1-4613-9874-5_11 |
1988-01-01 | The SHOOT flight demonstration is being undertaken to verify component and system level technology necessary to resupply large superfluid helium dewars in space. The baseline configuration uses two identical 210 liter dewars connected by a transfer line which contains a quick disconnect coupling. The helium will be tra... | The Superfluid Helium On-Orbit Transfer (Shoot) Flight Experiment | 10.1007/978-1-4613-9874-5_108 |
1988-01-01 | The superconducting proton storage ring of the HERA project at DESY (Hamburg) will contain 422 dipole — and 224 quadrupole magnets. The magnets will be installed in the 6.3-km ring underground. Three refrigerators produce supercritical helium, which is fed into a transferline that supplies individual sections of the ri... | Experience with a Process Control System for Large Scale Cryogenic Systems | 10.1007/978-1-4613-9874-5_134 |
1988-01-01 | The D-Zero liquid argon collider calorimeter has been designed for high energy particle physics experimentation as an integral part of the Tevatron accelerator/collider. The high density, hermetic, 125,000 channel calorimeter is an assembly of three axial, cylindrical, 20m^3 liquid argon cryostats containing 770 tonnes... | Cryogenic Design of the D-Zero Liquid Argon Collider Calorimeter | 10.1007/978-1-4613-9874-5_135 |
1988-01-01 | The CEBAF superconducting linear accelerator^1 requires a 4.8KW cryogenic system to operate 418 superconducting r.f. cavities^2 at 2.0K. The cavities are assembled into 53 cryomodules which are stand alone cryostats. The cryomodules are made up of four cryounits, each containing two r.f. cavities. CEBAF’s three experim... | Cebaf’s Cryogenic System | 10.1007/978-1-4613-9874-5_76 |
1988-01-01 | A small high vacuum valve has been built for use in a liquid hydrogen handling system. The valve stem tip consists of a polycarbonate resin which closes against a stainless steel seat. Other features of the valve include a closing mechanism that is helium gas operated and a bellows stem seal that allows the valve to op... | A Miniature Cryogenic High Vacuum Valve | 10.1007/978-1-4613-9874-5_139 |
1988-01-01 | During the next 10 years several space missions will require superfluid helium replenishment at two or three-year intervals to extend their lifetimes. A shuttle experiment is in hardware development which will demonstrate many of the key components including fluid pumps, acquisition devices, flowmeters, quick disconnec... | Cryogenic and Thermal Design for the Superfluid Helium On-Orbit Transfer (SHOOT) Experiment | 10.1007/978-1-4613-9874-5_109 |
1988-01-01 | The potential for in-flight replenishment of liquid helium for future systems such as the Space Infrared Telescope Facility has triggered vast interests in the fountain effect pumps (FEP’s). The purpose of this paper is to correlate the FEP data in literatures under a common frame of reference. An empirical equation is... | The Design of Fountain Effect Pumps | 10.1007/978-1-4613-9874-5_56 |
1988-01-01 | A specially designed liquid helium flow cryostat for irradiating Nb_3Sn specimens below 20K with fusion (14.6 MeV) neutrons at the Rotating Target Neutron Sorce (RTNS-II) in Livermore and subsequent in-situ measurements of the critical parameters Tc and j_c in magnetic fields up to 15.6 T has been employed in recent ex... | A Cryogenic System for Fusion Neutron Irradiation and In-Situ Measurements on Superconductors | 10.1007/978-1-4613-9874-5_78 |
1988-01-01 | 4 K Gifford McMahon (GM)/Joule Thomson (J-T) cycle refrigerators are the most commonly used type of closed cycle refrigerator for applications requiring 1 to 4 watts of refrigeration. This paper describes the evolution of this type of refrigerator, its characteristics, application considerations, and gives examples of ... | 4 K Gifford Mc Mahon/Joule-Thomson Cycle Refrigerators | 10.1007/978-1-4613-9874-5_84 |
1988-01-01 | Airborne C_1- and C_2-halocarbons can be determined by cartridge sampling, gas chromatography and electron capture detection. High accuracy is achieved in the concentration range typical for rural and forest air, when the following components of the analytical train are meticulously optimized: enrichment on adsorption ... | Optimization of the gas-chromatographic determination of airborne halocarbons | 10.1007/BF00470626 |
1987-12-01 | Following cryogenic lesions of the brain in the rabbit, ictal activity appears within min with a maximum at 2 h. Brain edema increases rapidly between 2–4 h with a maximum at 8 h. The glutamate concentration reaches 209% of control in the perilesional area at 2 h and the time course of glutamate/GABA ratio parallels th... | Relationship between epileptic activity and edema formation in the acute phase of cryogenic lesion | 10.1007/BF03160181 |
1987-11-01 | Metrological equipment for checking means of measuring magnetic fields under normal and cryogenic conditions | 10.1007/BF00865058 | |
1987-10-01 | Cryogenic properties of a P/M Ni_3Al-B alloy | 10.1007/BF02646213 | |
1987-10-01 | The cryogenic mechanical properties of aluminum-lithium alloys are of interest because these alloys are attractive candidate materials for cryogenic tankage. Previous work indicates that the strength-toughness relationship for alloy 2090-T81 (Al-2.7Cu-2.2Li-0.12Zr by weight) improves significantly as temperature decrea... | Mechanical behavior of aluminum-lithium alloys at cryogenic temperatures | 10.1007/BF02646201 |
1987-08-01 | A new procedure for obtaining density-dependent mixing rules is applied to the Soave-Redlich-Kwong equation of state. The result is a one-parameter local-composition mixing rule which adequately represents the nonidealities possible in dense fluid mixtures but approaches the classical mixing rule at low densities. A th... | A new density-dependent mixing rule for the SRK equation of state | 10.1007/BF00649091 |
1987-06-01 | Standard system for calibrating and checking level gauges for cryogenic media under working conditions | 10.1007/BF00866845 | |
1987-04-01 | Relations for determining the degree of perforation of the radiation screen as a function of the magnitude of gas evolution from the inner surfaces are obtained. | Effect of perforation of a radiation screen on preevacuation of extended cryogenic systems with high-vacuum thermal insulation | 10.1007/BF00872036 |
1987-04-01 | Laser differential spectrophotometer for the study of photochemical reactions at cryogenic temperatures | 10.1007/BF00660059 | |
1987-01-01 | This paper presents an overview on cryogenic structural materials. Material properties at liquid helium temperature are described for application in superconducting technology which requires highly reliable structural materials. The candidate materials are nonmagnetic high strength austenitic steels and titanium alloys... | Structural Materials for Cryogenic Use | 10.1007/978-94-009-3445-0_16 |
1987-01-01 | Increasing the service life of components of cryogenic machines | 10.1007/BF01150652 | |
1987-01-01 | Some spectroscopic and kinetic measurements of hemoproteins have been carried out in cryogenic temperatures in order to achieve a number of specific objectives such as trapping transient intermediates, retarding decay processes and electron/nuclear relaxation rates, controlling reaction rates, expanding a range of temp... | Effects of Freezing on the Coordination State and Ligand Orientation in Hemoproteins | 10.1007/978-1-4613-1941-2_51 |
1987-01-01 | Tension and compression of glass reinforced and organic plastics at room and cryogenic temperatures | 10.1007/BF00815390 | |
1987-01-01 | The results of a research project on fatigue properties of high-manganese steels for cryogenic use under the sponsorship of Science and Technology Agency of Japan are summarized. The temperature dependence of cyclic deformation, low cycle fatigue life, notch sensitivity and near threshold fatigue crack growth rate are ... | Fatigue Behavior of High-manganese Steel at Cryogenic Temperature | 10.1007/978-94-009-3445-0_18 |
1987-01-01 | The irretrievable loss of the naturally occurring germplasm is a problem of great concern to tree breeders. Many countries are facing serious gene pool losses in populations of some valuable tree species (4). With increasing world demand for forest products and continuing deforestation, the conservation of genetic reso... | Cryopreservation of Woody Species | 10.1007/978-94-009-4484-8_16 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.