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1

Solar panel parallel mounting configuration  

NASA Technical Reports Server (NTRS)

A spacecraft includes a plurality of solar panels interconnected with a power coupler and an electrically operated device to provide power to the device when the solar cells are insolated. The solar panels are subject to bending distortion when entering or leaving eclipse. Spacecraft attitude disturbances are reduced by mounting each of the solar panels to an elongated boom made from a material with a low coefficient of thermal expansion, so that the bending of one panel is not communicated to the next. The boom may be insulated to reduce its bending during changes in insolation. A particularly advantageous embodiment mounts each panel to the boom with a single mounting, which may be a hinge. The single mounting prevents transfer of bending moments from the panel to the boom.

Mutschler, Jr., Edward Charles (Inventor)

1998-01-01

2

Lunar Rover Solar Panel MountTeam Members: Tian Le, Tudor Boiangiu, Jeremy Chan, James Haensel To develop a mechanized mount for a solar panel to  

E-print Network

Lunar Rover Solar Panel MountTeam Members: Tian Le, Tudor Boiangiu, Jeremy Chan, James Haensel To develop a mechanized mount for a solar panel to be mounted on a lunar rover. Must be: · capable of orienting panel towards sun · reside on mast extending vertically from rover · capable of unfurling solar

3

The V-Z Panel as a Side-Mounted Antenna  

Microsoft Academic Search

The side-mounted antenna array is becoming increasingly popular as a television antenna. An efficient and economical radiator for the purpose is the zig-zag panel antenna. The V-Z panel is a zig-zag antenna that is modified to produce a broader horizontal pattern. With the technique of panel skewing, practical omnidirectional arrays can be built with only three V-Z panels properly mounted

R. N. Clark; A. L. Davidson

1967-01-01

4

A Fuzzy-Based Maximum Power Point Tracker for Body Mounted Solar Panels in LEO Satellites  

Microsoft Academic Search

Solar panels are the power subsystem components which provide satellite electrical power. Solar panels characteristics depend on environmental conditions (insolation level, temperature and etc.). In this paper, design and simulation of fuzzy-based MPPT for the body mounted solar panel in a LEO satellite are presented. To show how good the proposed technique is; we applied it into a real system.

M. Taherbaneh; M. B. Menhaj

2007-01-01

5

3D head mount display with single panel  

NASA Astrophysics Data System (ADS)

The head mount display for entertainment usually requires light weight. But in the professional application has more requirements. The image quality, field of view (FOV), color gamut, response and life time are considered items, too. A head mount display based on 1-chip TI DMD spatial light modulator is proposed. The multiple light sources and splitting images relay system are the major design tasks. The relay system images the object (DMD) into two image planes to crate binocular vision. The 0.65 inch 1080P DMD is adopted. The relay has a good performance which includes the doublet to reduce the chromatic aberration. Some spaces are reserved for placing the mirror and adjustable mechanism. The mirror splits the rays to the left and right image plane. These planes correspond to the eyepieces objects and image to eyes. A changeable mechanism provides the variable interpupillary distance (IPD). The folding optical path makes sure that the HMD center of gravity is close to the head and prevents the uncomfortable downward force being applied to head or orbit. Two RGB LED assemblies illuminate to the DMD in different angle. The light is highly collimated. The divergence angle is small enough such that one LED ray would only enters to the correct eyepiece. This switching is electronic controlled. There is no moving part to produce vibration and fast switch would be possible. Two LED synchronize with 3D video sync by a driving board which also controls the DMD. When the left eye image is displayed on DMD, the LED for left optical path turns on. Vice versa for right image and 3D scene is accomplished.

Wang, Yuchang; Huang, Junejei

2014-09-01

6

Test-Anchored Vibration Response Predictions for an Acoustically Energized Curved Orthogrid Panel with Mounted Components  

NASA Technical Reports Server (NTRS)

A rich body of vibroacoustic test data was recently generated at Marshall Space Flight Center for a curved orthogrid panel typical of launch vehicle skin structures. Several test article configurations were produced by adding component equipment of differing weights to the flight-like vehicle panel. The test data were used to anchor computational predictions of a variety of spatially distributed responses including acceleration, strain and component interface force. Transfer functions relating the responses to the input pressure field were generated from finite element based modal solutions and test-derived damping estimates. A diffuse acoustic field model was employed to describe the assumed correlation of phased input sound pressures across the energized panel. This application demonstrates the ability to quickly and accurately predict a variety of responses to acoustically energized skin panels with mounted components. Favorable comparisons between the measured and predicted responses were established. The validated models were used to examine vibration response sensitivities to relevant modeling parameters such as pressure patch density, mesh density, weight of the mounted component and model form. Convergence metrics include spectral densities and cumulative root-mean squared (RMS) functions for acceleration, velocity, displacement, strain and interface force. Minimum frequencies for response convergence were established as well as recommendations for modeling techniques, particularly in the early stages of a component design when accurate structural vibration requirements are needed relatively quickly. The results were compared with long-established guidelines for modeling accuracy of component-loaded panels. A theoretical basis for the Response/Pressure Transfer Function (RPTF) approach provides insight into trends observed in the response predictions and confirmed in the test data. The software modules developed for the RPTF method can be easily adapted for quick replacement of the diffuse acoustic field with other pressure field models; for example a turbulent boundary layer (TBL) model suitable for vehicle ascent. Wind tunnel tests have been proposed to anchor the predictions and provide new insight into modeling approaches for this type of environment. Finally, component vibration environments for design were developed from the measured and predicted responses and compared with those derived from traditional techniques such as Barrett scaling methods for unloaded and component-loaded panels.

Frady, Gregory P.; Duvall, Lowery D.; Fulcher, Clay W. G.; Laverde, Bruce T.; Hunt, Ronald A.

2011-01-01

7

Test-Anchored Vibration Response Predictions for an Acoustically Energized Curved Orthogrid Panel with Mounted Components  

NASA Technical Reports Server (NTRS)

rich body of vibroacoustic test data was recently generated at Marshall Space Flight Center for component-loaded curved orthogrid panels typical of launch vehicle skin structures. The test data were used to anchor computational predictions of a variety of spatially distributed responses including acceleration, strain and component interface force. Transfer functions relating the responses to the input pressure field were generated from finite element based modal solutions and test-derived damping estimates. A diffuse acoustic field model was applied to correlate the measured input sound pressures across the energized panel. This application quantifies the ability to quickly and accurately predict a variety of responses to acoustically energized skin panels with mounted components. Favorable comparisons between the measured and predicted responses were established. The validated models were used to examine vibration response sensitivities to relevant modeling parameters such as pressure patch density, mesh density, weight of the mounted component and model form. Convergence metrics include spectral densities and cumulative root-mean squared (RMS) functions for acceleration, velocity, displacement, strain and interface force. Minimum frequencies for response convergence were established as well as recommendations for modeling techniques, particularly in the early stages of a component design when accurate structural vibration requirements are needed relatively quickly. The results were compared with long-established guidelines for modeling accuracy of component-loaded panels. A theoretical basis for the Response/Pressure Transfer Function (RPTF) approach provides insight into trends observed in the response predictions and confirmed in the test data. The software developed for the RPTF method allows easy replacement of the diffuse acoustic field with other pressure fields such as a turbulent boundary layer (TBL) model suitable for vehicle ascent. Structural responses using a TBL model were demonstrated, and wind tunnel tests have been proposed to anchor the predictions and provide new insight into modeling approaches for this environment. Finally, design load factors were developed from the measured and predicted responses and compared with those derived from traditional techniques such as historical Mass Acceleration Curves and Barrett scaling methods for acreage and component-loaded panels.

Frady, Gregory P.; Duvall, Lowery D.; Fulcher, Clay W. G.; Laverde, Bruce T.; Hunt, Ronald A.

2011-01-01

8

A geochemical survey using heavy mineral concentrates in the Mount Belknap caldera vicinity, Utah  

USGS Publications Warehouse

Geochemical surveys of the rocks, heavy-mineral concentrates, and surface and spring waters in the vicinity of the Mount Belknap caldera, Tushar Mountains, west-central Utah, were conducted during the summers of 1978 and 1979. Anomalous concentrations of mostly lithophile elements, particularly niobium, beryllium, lead, yttrium, tin, zinc, manganese, and molybdenum in the magnetic and nonmagnetic fraction of heavy-mineral concentrates derived from stream sediment suggest that late stage, highly differentiated felsic rocks were involved in the eruptive history of the Mount Belknap caldera. Q-mode factor analysis was used to characterize the geochemical assemblages within the survey area, and the areal distribution of high-factor scores associated with mineralization indicates favorable target areas for future exploration. The results of these studies indicate that porphyry-type molybdenum and possible associated vein-type uranium mineralized deposits may exist in or near the Mount Belknap caldera.

Tucker, R. E.; Miller, W. Roger; Motooka, J. M.

1982-01-01

9

A Portable Equatorial Mount for Solar-Testing Large Solar Panels  

Microsoft Academic Search

Testing in sunlight is an essential step in verifying the quality of large solar-cell panels, and in predicting space performance. Solar testing is usually done at high elevations to minimize absorption of sunlight by the atmosphere. A problem in such solar testing is the orientation of large panels toward the sun continuously, especially when wind gusts can occur. This paper

G. E. Schmeer; H. Oman

1965-01-01

10

The Heavy metal chemistry of atmospheric particulate matter emitted by mount etna volcano  

Microsoft Academic Search

Measurements of the chemical composition of atmospheric particulate matter, collected by air filtration in the plumes from various active craters and vents at Mount Etna, Sicily, in June 1976, allowed to estimate a discharge of particulate elements to the atmosphere shown to be representative of Mount Etna long-term activity. For some enriched trace elements in this volcanic aerosol (Cu, Zn,

P. Buat-Mnard; M. Arnold

1978-01-01

11

Photovoltaic module mounting system  

DOEpatents

A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

Miros, Robert H. J. (Fairfax, CA); Mittan, Margaret Birmingham (Oakland, CA); Seery, Martin N. (San Rafael, CA); Holland, Rodney H. (Novato, CA)

2012-04-17

12

Photovoltaic module mounting system  

DOEpatents

A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

Miros, Robert H. J.; Mittan, Margaret Birmingham; Seery, Martin N; Holland, Rodney H

2012-09-18

13

A hybrid simulated method for analyzing the optical efficiency of a head-mounted display with a quasi-crystal OLED panel.  

PubMed

Organic light emitting diodes (OLEDs) with a quasi-crystal (QC) structure are analyzed and applied in a head-mounted display (HMD) system in this study. We adopt a hybrid simulated method to evaluate the light extraction efficiency (LEE) and far-field pattern in the air, and study the relationship between them. The simulation results show that OLEDs implanted with the QC structure can provide a collimated far-field pattern to increase the brightness. Using this 10-fold QC arrangement the maxima LEE of the OLEDs can be increased by 1.20 times. Compared with conventional OLEDs, the viewing angle of the OLED panel decreases from 120 degrees to 26 degrees with an improvement in the optical efficiency of the HMD system by 2.66 times. Moreover, the normalized on-axis intensity in the pupil of the eyepiece can be enlarged up to 3.95 times which suggests that the OLED panel can save 74.68% energy while achieving the same on-axis intensity as conventional OLEDs. PMID:24922267

Chang, Kao-Der; Li, Chang-Yi; Pan, Jui-Wen; Cheng, Kuei-Yuan

2014-03-10

14

Human health and ecological toxicity potentials due to heavy metal content in waste electronic devices with flat panel displays.  

PubMed

Display devices such as cathode-ray tube (CRT) televisions and computer monitors are known to contain toxic substances and have consequently been banned from disposal in landfills in the State of California and elsewhere. New types of flat panel display (FPD) devices, millions of which are now purchased each year, also contain toxic substances, but have not previously been systematically studied and compared to assess the potential impact that could result from their ultimate disposal. In the current work, the focus is on the evaluation of end-of-life toxicity potential from the heavy metal content in select FPD devices with the intent to inform material selection and design-for-environment (DfE) decisions. Specifically, the metals antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, mercury, molybdenum, nickel, selenium, silver, vanadium, and zinc in plasma TVs, LCD (liquid crystal display) TVs, LCD computer monitors and laptop computers are considered. The human health and ecotoxicity potentials are evaluated through a life cycle assessment perspective by combining data on the respective heavy metal contents, the characterization factors in the U.S. EPA Tool for the Reduction and Assessment of Chemical and other environmental Impacts (TRACI), and a pathway and impact model. Principal contributors to the toxicity potentials are lead, arsenic, copper, and mercury. Although the heavy metal content in newer flat panel display devices creates less human health toxicity potential than that in CRTs, for ecological toxicity, the new devices are worse, especially because of the mercury in LCD TVs and the copper in plasma TVs. PMID:20056318

Lim, Seong-Rin; Schoenung, Julie M

2010-05-15

15

Solar heating panel  

Microsoft Academic Search

A solar heating panel with a heat collector mounted on an insulating base and an arched cover over said collector mounted in clips at the edges of the base is described. One or two flexible covers slidingly positioned in channels of the mounting clips, with a cover in sealing engagement with the insulating base and projecting downward below the top

1976-01-01

16

Sharing the rivers: Balancing the needs of people and fish against the backdrop of heavy sediment loads downstream from Mount Rainier, Washington  

NASA Astrophysics Data System (ADS)

Despite heavy sediment loads, large winter floods, and floodplain development, the rivers draining Mount Rainier, a 4,392-m glaciated stratovolcano within 85 km of sea level at Puget Sound, Washington, support important populations of anadromous salmonids, including Chinook salmon and steelhead trout, both listed as threatened under the Endangered Species Act. Aggressive river-management approaches of the early 20th century, such as bank armoring and gravel dredging, are being replaced by more ecologically sensitive approaches including setback levees. However, ongoing aggradation rates of up to 8 cm/yr in lowland reaches present acute challenges for resource managers tasked with ensuring flood protection without deleterious impacts to aquatic ecology. Using historical sediment-load data and a recent reservoir survey of sediment accumulation, rivers draining Mount Rainer were found to carry total sediment yields of 350 to 2,000 tonnes/km2/yr, notably larger than sediment yields of 50 to 200 tonnes/km2/yr typical for other Cascade Range rivers. An estimated 70 to 94% of the total sediment load in lowland reaches originates from the volcano. Looking toward the future, transport-capacity analyses and sediment-transport modeling suggest that large increases in bedload and associated aggradation will result from modest increases in rainfall and runoff that are predicted under future climate conditions. If large sediment loads and associated aggradation continue, creative solutions and long-term management strategies are required to protect people and structures in the floodplain downstream of Mount Rainier while preserving aquatic ecosystems.

Magirl, C. S.; Czuba, J. A.; Czuba, C. R.; Curran, C. A.

2012-12-01

17

Solar energy heating panel for a building  

Microsoft Academic Search

A solar energy heating panel is provided for mounting in a building wall to effect heating of the air in an interior building space. A plurality of the heating panels are mounted in parallel relationship in a supporting structure for angular rotation about horizontal pivot axes to selected position. Each of the heating panels includes a heat-transfer controlling panel and

Tetirick

1982-01-01

18

Mirror mount  

DOEpatents

A mirror mount (10) is provided that allows free pitch, yaw and roll motion of the mirror (28) while keeping the location of a point (56) on the surface of the mirror (28) fixed in the rest frame of reference of the mount (10). Yaw movement is provided by two yaw cylinders (30,32) that are bearing (52) mounted to provide rotation. Pitch and roll motion is provided by a spherically annular shell (42) that is air bearing (72,74) mounted to move between a clamp (60) and an upper pedestal bearing (44). The centers of curvature of the spherical surfaces of the shell (42) lie upon the point (56). Pitch motion and roll motion are separately and independently imparted to mirror (28) by a pair of pitch paddles (34) and a pair of roll paddles (36) that are independently and separately moved by control rods (76,80) driven by motors (78,82).

Humpal, Harold H. (San Ramon, CA)

1987-01-01

19

Mirror mount  

DOEpatents

A mirror mount is provided that allows free pitch, yaw and roll motion of the mirror while keeping the location of a point on the surface of the mirror fixed in the rest frame of reference of the mount. Yaw movement is provided by two yaw cylinders that are bearing mounted to provide rotation. Pitch and roll motion is provided by a spherically annular shell that is air bearing mounted to move between a clamp and an upper pedestal bearing. The centers of curvature of the spherical surfaces of the shell lie upon the point. Pitch motion and roll motion are separately and independently imparted to mirror by a pair of pitch paddles and a pair of roll paddles that are independently and separately moved by control rods driven by motors. 5 figs.

Humpal, H.H.

1987-11-10

20

Mirror mount  

DOEpatents

A mirror mount is provided that allows free pitch, yaw and roll motion of the mirror while keeping the location of a point on the surface of the mirror fixed in the rest frame of reference of the mount. Yaw movement is provided by two yaw cylinders that are bearing mounted to provide rotation. Pitch and roll motion is provided by a spherically annular shell that is air bearing mounted to move between a clamp and an upper pedestal bearing. The centers of curvature of the spherical surfaces of the shell lie upon the point. Pitch motion and roll motion are separately and independently imparted to mirror by a pair of pitch paddles and a pair of roll paddles that are independently and separately moved by control rods driven by motors.

Humpal, H.H.

1986-03-21

21

Mount Sinai  

Cancer.gov

Evaluation of HCC Response to Systemic Therapy with Quantitative MRIBachir Taouli (Bachir.taouli@mountsinai.org)U01CA172320Mount Sinai School of Medicine The incidence of hepatocellular carcinoma (HCC) has recently increased in the United States. HCC

22

Mirror mount  

DOEpatents

A unique lens or mirror mount having adjustable constraints at two key locations to allow for "X" and "Y" tilts of the mirror only. The device uses two pair of flexures of a type such that the pivots of the mirror gimble are rigidly fixed in all planes allowing the device to have zero stacking tolerance and zero wear over time.

Kuklo, Thomas C. (Oakdale, CA); Bender, Donald A. (Dublin, CA)

1994-01-01

23

Mounting Electronics  

Microsoft Academic Search

\\u000a Your 3D printer needs a handful of electronics to control the Extruder and motors, and thats what youll be working on in\\u000a this chapter. While you could easily mount all of the electronics on a separate piece of plywood, that would also involve\\u000a having many long wires running from motors and Extruder to the various controller components.

Patrick Hood-Daniel; James Floyd Kelly

24

Rooftop solar energy collector panel  

Microsoft Academic Search

A solar energy collector panel is adapted to be mounted on a rooftop for heating air forced therethrough. The panel is rectangular in form and outwardly opens. A closure member is affixed to the outermost peripheral edge portion of the housing and forms a thermal barrier through which solar energy can travel into the interior of the housing, while thermal

B. O. Behrendt; I. L. Cisneros; D. R. Stephenson; R. B. Stephenson

1981-01-01

25

Solar energy collector panel  

Microsoft Academic Search

A solar energy collector panel, having an absorber plate and a frame within which the absorber plate is mounted, is described. The absorber plate is comprised of a plurality of absorber plate sections each having interlocking structure formed along both of their lateral edges. This interlocking structure forms a tubular passage when the interlocking structure of the adjacent absorber plate

Waiche

1981-01-01

26

Glass/Epoxy Door Panel for Automobiles  

NASA Technical Reports Server (NTRS)

Lightweight panel cost-effective. Integrally-molded intrusion strap key feature of composite outer door panel. Strap replaces bulky and heavy steel instrusion beam of conventional door. Standard steel inner panel used for demonstration purposes. Door redesigned to exploit advantages of composite outer panel thinner. Outer panel for automobilie door, made of glass/epoxy composite material, lighter than conventional steel door panel, meets same strength requirements, and less expensive.

Bauer, J. L. JR.

1985-01-01

27

Overlook Knoll MOUNT KATOLINAT  

E-print Network

Overlook Knoll MOUNT KATOLINAT MOUNT IKAGLUIK VALLEY OF TEN THOUSAND SMOKES Pinnacle Porphyry MOUNT MARTIN ALAGOGSHAK VOLCANO MOUNT MAGEIK Peak 6900 Peak 7100 Peak 6600 MT CERBERUS FALLING MOUNTAIN BAKED MOUNTAIN BROKEN MOUNTAIN NOVARUPTA WEST TRIDENT EAST TRIDENT TRIDENT I SE FUMAROLE FIELD SOUTHWEST TRIDENT

28

Effects of Structural Flexibility on Aircraft-Engine Mounts  

NASA Technical Reports Server (NTRS)

Analysis extends technique for design of widely used type of vibration-isolating mounts for aircraft engines, in which rubber mounting pads located in plane behind center of gravity of enginepropeller combination. New analysis treats problem in statics. Results of simple approach useful in providing equations for design of vibrationisolating mounts. Equations applicable in usual situation in which engine-mount structure itself relatively light and placed between large mass of engine and other heavy components of airplane.

Phillips, W. H.

1986-01-01

29

Nonstationary Panels, Cointegration in Panels and Dynamic Panels: A Survey  

Microsoft Academic Search

This paper provides an overvie of topics in nonstationary panels: panel unit root tests, panel cointegration tests, and estimation of panel cointegration models. In addition it surveys recent developments in dynamic panel data models.

Badi H. Baltagi; Chihwa Kao

2000-01-01

30

High bandwidth optical mount  

DOEpatents

An optical mount, which directs a laser beam to a point by controlling the position of a light-transmitting optic, is stiffened so that a lowest resonant frequency of the mount is approximately one kilohertz. The optical mount, which is cylindrically-shaped, positions the optic by individually moving a plurality of carriages which are positioned longitudinally within a sidewall of the mount. The optical mount is stiffened by allowing each carriage, which is attached to the optic, to move only in a direction which is substantially parallel to a center axis of the optic. The carriage is limited to an axial movement by flexures or linear bearings which connect the carriage to the mount. The carriage is moved by a piezoelectric transducer. By limiting the carriage to axial movement, the optic can be kinematically clamped to a carriage.

Bender, Donald A. (Dublin, CA); Kuklo, Thomas (Oakdale, CA)

1994-01-01

31

Liner mounting assembly  

NASA Technical Reports Server (NTRS)

A mounting assembly includes an annular supporting flange disposed coaxially about a centerline axis which has a plurality of circumferentially spaced apart supporting holes therethrough. An annular liner is disposed coaxially with the supporting flange and includes a plurality of circumferentially spaced apart mounting holes aligned with respective ones of the supporting holes. Each of a plurality of mounting pins includes a proximal end fixedly joined to the supporting flange through a respective one of the supporting holes, and a distal end disposed through a respective one of the liner mounting holes for supporting the liner to the supporting flange while unrestrained differential thermal movement of the liner relative to the supporting flange.

Halila, Ely E. (Inventor)

1994-01-01

32

Photovoltaic panel clamp  

DOEpatents

A photovoltaic panel clamp includes an upper and lower section. The interface between the assembled clamp halves and the module edge is filled by a flexible gasket material, such as EPDM rubber. The gasket preferably has small, finger like protrusions that allow for easy insertion onto the module edge while being reversed makes it more difficult to remove them from the module once installed. The clamp includes mounting posts or an integral axle to engage a bracket. The clamp also may include a locking tongue to secure the clamp to a bracket.

Mittan, Margaret Birmingham (Oakland, CA); Miros, Robert H. J. (Fairfax, CA); Brown, Malcolm P. (San Francisco, CA); Stancel, Robert (Loss Altos Hills, CA)

2012-06-05

33

Cold Spring Mount Washington  

E-print Network

Spring Mount Washington Light Rail McAuley Hall Falls@ Woodheights Falls@ 43rd Keswick North Bldg Keswick 83 JonesFallsExpy 83 JonesFallsExpy 83 FallsRd N S EW Homewood - Mt. Washington Shuttle NextBus textth Keswick North Building Falls at 42nd Falls at Cold Spring Mount Washington Light Rail McAuley Hall

Hattar, Samer

34

Stable mirror mount  

DOEpatents

An improved mirror mount assembly is disclosed. The mirror mount assembly provides a post assembly slidable in a Y-axis orientation and a nut plate assembly slidable in an X-axis orientation and a device for simultaneously locking the post assembly and the key assembly in a fixed position.

Cutburth, Ronald W. (Bulls Gap, TN)

1990-01-01

35

Stable mirror mount  

DOEpatents

An improved mirror mount assembly is disclosed. The mirror mount assembly provides a post assembly slidable in a Y-axis orientation and a nut plate assembly slidable in an X-axis orientation and means for simultaneously locking said post assembly and said key assembly in a fixed position.

Cutburth, R.W.

1983-11-04

36

Optoelectronic Mounting Structure  

DOEpatents

An optoelectronic mounting structure is provided that may be used in conjunction with an optical transmitter, receiver or transceiver module. The mounting structure may be a flexible printed circuit board. Thermal vias or heat pipes in the head region may transmit heat from the mounting structure to the heat spreader. The heat spreader may provide mechanical rigidity or stiffness to the heat region. In another embodiment, an electrical contact and ground plane may pass along a surface of the head region so as to provide an electrical contact path to the optoelectronic devices and limit electromagnetic interference. In yet another embodiment, a window may be formed in the head region of the mounting structure so as to provide access to the heat spreader. Optoelectronic devices may be adapted to the heat spreader in such a manner that the devices are accessible through the window in the mounting structure.

Anderson, Gene R. (Albuquerque, NM); Armendariz, Marcelino G. (Albuquerque, NM); Baca, Johnny R. F. (Albuquerque, NM); Bryan, Robert P. (Albuquerque, NM); Carson, Richard F. (Albuquerque, NM); Chu, Dahwey (Albuquerque, NM); Duckett, III, Edwin B. (Albuquerque, NM); McCormick, Frederick B. (Albuquerque, NM); Peterson, David W. (Sandia Park, NM); Peterson, Gary D. (Albuquerque, NM); Reber, Cathleen A. (Corrales, NM); Reysen, Bill H. (Lafayette, CO)

2004-10-05

37

Mount Jefferson, Oregon  

NSDL National Science Digital Library

This resource about Mount Jefferson, a stratovolcano in the Cascade Range, features links to all aspects of the volcano, including its geographic setting, geologic and eruptive history, and historical information about it. The site explains that Mount Jefferson has erupted repeatedly for hundreds of thousands of years, with its last eruptive episode during the last major glaciation, which culminated about 15,000 years ago. Geologic evidence shows that Mount Jefferson is capable of large explosive eruptions. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

38

Thermal compensating mount  

NASA Technical Reports Server (NTRS)

The main objective is to provide a device for maintaining the alignment integrity of an alignment sensitive component over a wide range of temperatures. A thermal compensating mount is presented. A cylindrical extension is integrally formed to the alignment sensitive component. Both the extension and component share the same coefficient of thermal expansion. The cylindrical extension is placed into a mounting structure which has a diameter greater than that of the extension. An adhesive secures the cylindrical extension to the mount. The difference between the diameters of the cylindrical extension and the cylindrical receptacle is such that the differential thermal expansion across the extension and the receptacle edges is exactly compensated for by the thermal compensation of the adhesive between them. Accordingly, the alignment sensitive component does not change position when subjected to temperature variations. One application of this invention is laser optical-path folding prisms, which are fixed to the mounting surface by a small amount of epoxy adhesive.

Jalink, Antony, Jr. (inventor); Campbell, Scott R. (inventor)

1990-01-01

39

Mount Etna Eruption  

NSDL National Science Digital Library

This animation is a zoom into the Ongoing Mount Etna Eruption. The data was aquired from the MODIS instrument at 9:40 UTC on July 24, 2001. The Ash Plume and lava streaming from the volcano are clearly visible.

Perkins, Lori; Salomonson, Vincent

2001-07-25

40

Laboratory calibration of field reflectance panels  

NASA Technical Reports Server (NTRS)

A method used for calibrating field reflectance panels in the visible and shortwave infrared wavelength range is described. The directional reflectance factor of painted barium sulfate (BaSO4) panels is determined. The reference for this method is the hemispherical reflectance of pressed polytetrafluoroethylene (halon) powder prepared according to National Bureau of Standards (NBS) directions. The panels and a radiometer are mounted on rotation stages to measure the reflectance factor at different incidence and view angles. The sensor can be any laboratory or field filter radiometer small enough to mount on the apparatus. The method is used to measure the reflectance factors of halon and BaSO4 panels between 0.45 and 0.85 micrometers. These reflectance factors are compared to those measured by a field apparatus. The results agree to within 0.013 in reflectance at incidence angles between 15 and 75 degrees.

Biggar, S. F.; Labed, J.; Santer, R. P.; Slater, P. N.; Jackson, R. D.

1988-01-01

41

Operation and maintenance cost data for residential photovoltaic modules/panels  

NASA Technical Reports Server (NTRS)

Costs associated with the operation and maintenance of residential photovoltaic modules and arrays are studied. Six basic topics related to operation and maintenance to photovoltaic arrays are investigated: maintenance; cleaning; panel replacement; gasket repair/replacement; wiring repair/replacement; and termination repair/replacement. The effects of the mounting types (rack mount, stand off mount, direct mount and integral mount) and the installation/replacement type (sequential, partial interruption and independent) are identified and described. Methods of reducing maintenance costs are suggested.

Oster, J. R., Jr.; Zaremski, D. R., Jr.; Albert, E. M.; Hawkins, S. L.

1980-01-01

42

Mount Shasta, California  

NSDL National Science Digital Library

This resource about Mount Shasta, a compound stratovolcano in the Cascade Range, features links to all aspects of the volcano, including its geographic setting, and geologic and eruptive history. Students learn that Mount Shasta dominates the landscape of northern California and is the largest stratovolcano of the Cascade chain at approximately 350 cubic kilometers. Mount Shasta hosts five glaciers, including the Whitney Glacier, the largest in California. Shastina is a large subsidiary cone that rises to 3,758 meters on the west flank of the compound volcano. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

43

Mount St. Helens, Washington  

NSDL National Science Digital Library

This resource about Mount St. Helens, a stratovolcano in the Cascade Range best known for its violent eruption in 1980, features links to all aspects of the volcano, including real time, online video cam and current seismicity, its geographic setting, and geologic and eruptive history. Students learn of an eruption in 1800 as well as extensive details of the 1980 event. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, points of interest, and Lewis and Clark information, which includes the sighting of Mount St. Helens. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

44

MOUNT BALDY WILDERNESS, ARIZONA.  

USGS Publications Warehouse

The Mount Baldy Wilderness, Arizona, was surveyed for mineral resources and was judged to have little or no promise for the occurrence of mineral resources. No mineral deposits, mining claims, or concentrations of trace metals were recognized within the area. No oil test holes have been drilled within the area; holes drilled about 35 mi north of the area were not productive. Further study of the Mount Baldy Wilderness would seem warranted only in the event that economic deposits of minerals or petroleum are found in nearby areas.

Finnell, Tommy, L.; Soule, John, H.

1984-01-01

45

Housing And Mounting Structure  

DOEpatents

This invention relates to an optical transmitter, receiver or transceiver module, and more particularly, to an apparatus for connecting a first optical connector to a second optical connector. The apparatus comprises: (1) a housing having at least a first end and at least a second end, the first end of the housing capable of receiving the first optical connector, and the second end of the housing capable of receiving the second optical connector; (2) a longitudinal cavity extending from the first end of the housing to the second end of the housing; and (3) an electromagnetic shield comprising at least a portion of the housing. This invention also relates to an apparatus for housing a flexible printed circuit board, and this apparatus comprises: (1) a mounting structure having at least a first surface and a second surface; (2) alignment ridges along the first and second surfaces of the mounting structure, the alignment ridges functioning to align and secure a flexible printed circuit board that is wrapped around and attached to the first and second surfaces of the mounting structure; and (3) a series of heat sink ridges adapted to the mounting structure, the heat sink ridges functioning to dissipate heat that is generated from the flexible printed circuit board.

Anderson, Gene R. (Albuquerque, NM); Armendariz, Marcelino G. (Albuquerque, NM); Baca, Johnny R.F. (Albuquerque, NM); Bryan, Robert P. (Albuquerque, NM); Carson, Richard F. (Albuquerque, NM); Duckett, III, Edwin B. (Albuquerque, NM); McCormick, Frederick B. (Albuquerque, NM); Miller, Gregory V. (Kansas City, MO); Peterson, David W. (Sandia Park, NM); Smith, Terrance T. (Albuquerque, NM)

2005-03-08

46

Mount St. Helens  

NSDL National Science Digital Library

Mount St. Helens, the most active volcano in the Cascade Range, caught the public's attention when massive eruptions began in 1980. With new eruptions and earthquakes taking place recently, people are being reminded of the grave dangers associated with this volcano. The first website, provided by the USDA Forest Service, presents the research, recreational, and educational activities at the 110,000-acre National Volcanic Monument, created in 1982 (1). Users can find live pictures and videos of Mount St. Helens and read about the latest volcanic activity. Second, the University of North Dakota supplies great retrospective of the 1980 explosion (2). Through a series of incredible pictures, students can discover how a huge eruption can drastically change the surrounding landscape. Users can take a virtual trip up the volcano from the trailhead to the summit. At the next website, the USGS provides links to current seismicity and real-time eruption and hydrologic monitoring data (3). Educators can find numerous pictures and figures illustrating the physical features of a volcano. Next, the Pacific Northwest Seismograph Network supplies seismographic and volcanic data for Mount St. Helens (4). While Mount St. Helens is considered the most active volcano in the Pacific Northwest at the moment, visitors can also discover the potential for earthquakes and significant volcanic activity at other locations in the Pacific Northwest. At the fifth website, the Wheeling Jesuit University offers a historical narrative of the serenity of the volcano and its periodic rages (5). While this site does not provide in-depth materials and data like the other sites, the straightforward writing style may be more beneficial to younger audiences. The sixth website is a news release from NASA describing the possibility that infrared digital images could "provide valuable clues as to how" Mount St. Helens erupted on October 1, 2004 (6). Through the many enlightening images of the lava dome, users can learn about how digital infrared imagery's master bands and associated wavelengths are used to characterize different features of the volcano. Next, in a press release, the National Geographic describes the Mount St. Helens eruption this month (7). Students and educators can discover how earthquakes are caused as rainwater encounters hot rock in the fall and how this process may impact the activity of volcanoes. The web site also introduces individuals to the Ring of Fire. Lastly, MSNBC offers a news article and video on the molten magma rising in Mount St. Helens, the current activity levels, and the advisories (8). The web site features a link describing the newest sensors that may assist scientists in predicting explosions.

47

Panel Sessions.  

ERIC Educational Resources Information Center

Lists the speakers and summarizes the issues addressed for 12 panel sessions on topics related to networking, including libraries and national networks, federal national resources and energy programs, multimedia issues, telecommuting, remote image serving, accessing the Internet, library automation, scientific information, applications of Z39.50,

Proceedings of the ASIS Mid-Year Meeting, 1992

1992-01-01

48

Roofing panels  

SciTech Connect

A roofing panel of glass-reinforced plastic (G.R.P.) or sheet metal is stiffened by longitudinal beams on its underside to span one pitch of a pitched roof from eaves to ridge. It has an outer skin and an inner impervious liner spaced therefrom and supported on the stiffening beams so as to form a tunnel open at both ends and extending from the vicinity of the eaves to theline of the roof ridge, where vents to atmosphere are provided in the outer skin. Air is convected upwards through the tunnel due to the heating of the outer skin by radiation from the sun. At the eaves end the tunnel also has an inlet port communicating with the roof space, and a damper controls the air flowing in from outside the building and the air flowing in from the roof space. At the line of the ridge the liner meets and is sealed on the corresponding liner of a counterpart panel on the opposite pitch of the roof so as to maintain the integrity of the convection air circuit in each section of the roof. A heat exchanger located in the tunnel transfers heat from the convected air to a hot water system in the building. A hollow box girder spans the width of the panel across the beams so as to rest on the top of a flank wall of the building and can be filled with concrete to anchor the panel in position.

Brill-edwards, K.O.

1983-05-10

49

Media Panel.  

ERIC Educational Resources Information Center

The Swedish Media Panel is a research program about children and young persons and their use of mass media. The aim of the ten-year (1975-1985) project is to explain how media habits originate, how they change as children grow older, what factors on the part of children themselves and in their surroundings may be connected with a certain use of

Marklund, Inger, Ed.; Hanse, Mona-Britt, Ed.

1984-01-01

50

Panel Fabrication  

NSDL National Science Digital Library

Proper Tool and Equipment Identification OBJECTIVES This tutorial is specifically designed for advanced students who are enrolled in their third semester of Collision Repair at UVSC. Students will learn of the different panel fabrication equipment available at UVSC to help them build their own Street Rod. Basic Body working skills will be mentioned, proper tool ...

Man??, Body

2005-11-30

51

Mount Rainier, Washington  

NSDL National Science Digital Library

This resource about Mount Rainier, a stratovolcano in the Cascade Range, features links to all aspects of the volcano, including its geographic setting, and geologic and eruptive history. Students learn that Mount Rainier is the highest and third-most voluminous volcano in the Cascades and that it dominates the Seattle-Tacoma area, where more than 1.5 million know it fondly as The Mountain. Also, it is the most dangerous volcano in the range, owing to the large population. One link leads to an extensive chart of the volcano's activity, highlighting extensive mudflows, debris flows, and lahars. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

52

Mount St. Helens Rebirth  

NASA Technical Reports Server (NTRS)

The catastrophic eruption of Mt. St. Helens 20 years ago today (on May 18, 1980), ranks among the most important natural events of the twentieth century in the United States. Because Mt. St. Helens is in a remote area of the Cascades Mountains, only a few people were killed by the eruption, but property damage and destruction totaled in the billions of dollars. Mount St. Helens is an example of a composite or stratovolcano. These are explosive volcanoes that are generally steep-sided, symmetrical cones built up by the accumulation of debris from previous eruptions and consist of alternating layers of lava flows, volcanic ash and cinder. Some of the most photographed mountains in the world are stratovolcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Hood in Oregon, and Mount Rainier in Washington. The recently erupting Mount Usu on the island of Hokkaido in Japan is also a stratovolcano. Stratovolcanoes are characterized by having plumbing systems that move magma from a chamber deep within the Earth's crust to vents at the surface. The height of Mt. St. Helens was reduced from about 2950 m (9677 ft) to about 2550 m (8364 ft) as a result of the explosive eruption on the morning of May 18. The eruption sent a column of dust and ash upwards more than 25 km into the atmosphere, and shock waves from the blast knocked down almost every tree within 10 km of the central crater. Massive avalanches and mudflows, generated by the near-instantaneous melting of deep snowpacks on the flanks of the mountain, devastated an area more than 20 km to the north and east of the former summit, and rivers choked with all sorts of debris were flooded more than 100 km away. The area of almost total destruction was about 600 sq. km. Ash from the eruption cloud was rapidly blown to the northeast and east producing lightning which started many small forest fires. An erie darkness caused by the cloud enveloped the landscape more than 200 km from the blast area, and ash could be seen falling from the sky over the Great Plains, more than 1500 km distant. This image was acquired by Landsat 7 on Aug. 22, 1999. It was produced at 30-m resolution using bands 3, 2, and 1 to display red, green, and blue, respectively ('true color'). Some of the effects of the massive eruption on May 18, 1980, can still be seen clearly, especially on the northern and eastern flanks of Mount St. Helens, which are still mostly barren (shades of white and gray). The crater is in the center of the image. Note the streaking from the crater (gray on the image). These are the remnants of pyroclastic flows (superheated avalanches of gas, ash and pieces of rock) that carved deep channels down the slopes and onto the relatively flat areas near the base of the mountain. The partially-filled Spirit Lake can be seen just to the northeast of the crater (blue-black on the image), and the where most of the energy was directed during the blast is the gray area immediately to the northwest of the crater. However, on other parts of the mountain, the rejuvenation process is obvious. Ash deposits have supplied minerals which have accelerated vegetation growth (various shades of green). Though far from what it looked like 20 years ago, Mount St Helens is actively recovering. Data courtesy Landsat 7 project and EROS Data Center. Caption by James Foster, NASA Goddard Space Flight Center.

2002-01-01

53

Mount Horeb Digital Collections  

NSDL National Science Digital Library

Visitors to Wisconsin often find themselves wandering through Mount Horeb, which is no surprise given its historical and cultural curiosities. This digital collection from the University of Wisconsin Digital Collections (UWDC) offers a range of printed materials depicting the early 20th century in this quaint town. The items here include church histories, family memories, books about the celebrated Norway Building, and other publications from the Mount Horeb Area Historical Society. All told, there are 23 documents here, including several rare photographs of John F. Kennedy giving campaign speeches during his 1960 trek through Wisconsin. It's worth noting that visitors can search the entire collection and, if they choose, go on to the complete state of Wisconsin collection homepage.

2012-01-01

54

Mount Wilson Observatory  

NASA Astrophysics Data System (ADS)

Mount Wilson Observatory, located in the San Gabriel Mountains near Pasadena, California, was founded in 1904 by George Ellery Hale with financial support from Andrew Carnegie. In the 1920s and 1930s, working at the 2.5 m Hooker telescope, Edwin Hubble made two of the most important discoveries in the history of astronomy: first, that `nebulae' are actually island universesgalaxieseach with bil...

Murdin, P.

2000-11-01

55

EMU helmet mounted display  

NASA Technical Reports Server (NTRS)

A helmet mounted display device is disclosed for projecting a display on a flat combiner surface located above the line of sight where the display is produced by two independent optical channels with independent LCD image generators. The display has a fully overlapped field of view on the combiner surface and the focus can be adjusted from a near field of four feet to infinity.

Marmolejo, Jose (inventor); Smith, Stephen (inventor); Plough, Alan (inventor); Clarke, Robert (inventor); Mclean, William (inventor); Fournier, Joseph (inventor)

1990-01-01

56

Plasma Screen Floating Mount  

DOEpatents

A mounting system for a flat display screen, particularly a plasma display screen, suspends the screen separately in each of the x-, y- and z-directions. A series of frames located by linear bearings and isolated by springs and dampers allows separate controlled movement in each axis. The system enables the use of relatively larger display screens in vehicles in which plasma screen are subject to damage from vibration.

Eakle, Robert F. (New Ellenton, SC); Pak, Donald J. (Martine, GA)

2004-10-26

57

Roofing panels  

Microsoft Academic Search

A roofing panel of glass-reinforced plastic (G.R.P.) or sheet metal is stiffened by longitudinal beams on its underside to span one pitch of a pitched roof from eaves to ridge. It has an outer skin and an inner impervious liner spaced therefrom and supported on the stiffening beams so as to form a tunnel open at both ends and extending

Brill-edwards

1983-01-01

58

52. VIEW OF REMAINS OF ORIGINAL 1907 CONTROL PANEL, LOCATED ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

52. VIEW OF REMAINS OF ORIGINAL 1907 CONTROL PANEL, LOCATED ON NORTH WALL OF EAST END OF CONTROL ROOM. PORTIONS OF THIS PANEL REMAINED IN USE UNTIL THE PLANT CLOSED. THE METERS AND CONTROLS ARE MOUNTED ON SOAPSTONE PANELS. THE INSTRUMENT IN THE LEFT CENTER OF THE PHOTOGRAPH IS A TIRRILL VOLTAGE REGULATOR. - New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Shore Drive, Greenwich, Fairfield County, CT

59

Solar energy panel  

Microsoft Academic Search

A solar heating panel utilizing an improved panel member construction to increase the strength and heat transfer capacity of the panel. The panel has upper and lower layers of individual interconnected panel members, with the panel members in the upper layer including a pair of spaced outwardly extending leg portions and a bight portion therebetween having a plurality of spaced

J. A. Bette; J. R. Bette; W. A. Bette

1984-01-01

60

Mount Mayon Erupts in the Philippines  

NSDL National Science Digital Library

Mount Mayon, one of the most active volcanoes in the Philippines, erupted on February 24, 2000, after lying dormant for eight months. The active volcano spewed lava, rocks, and ash repeatedly over the next three days. Volcanologists at the Philippine Institute of Volcanology and Seismology have warned of the likely possibility of bigger eruptions in the near future, with the greatest effects on the southeast and southwest sectors of the volcano. The volcano has already hurled molten boulders and 3,000-meter columns of ash into the air forcing an evacuation of some 50,000 people in a eight-kilometer radius around the crater. Volcanic debris estimated at 60 million metric tons are now lodged into the volcano's gullies. Heavy rainfall could cause more calamity in the form of mudflows. This week's In the News takes a closer look at the volcanic activity at Mount Mayon.

Ramanujan, Krishna.

61

Mount Everest snow plume: A case study  

NASA Astrophysics Data System (ADS)

A plume of snow blowing from the summit of Mount Everest is one of the most iconic images of the world's highest mountain. Its presence provides evidence of the strong jet stream winds that can buffet the mountain. In January 2004, astronauts onboard the International Space Station (ISS) observed a 15 to 20 km long snow plume emanating from the summit of Mount Everest. Remarkably little is known about these plumes and the role that they play in the redistribution of snow in the high Himalaya. In this paper we use a variety of meteorological datasets to show that the observed plume was the combination of high winds associated with the East Asian Jet Stream (EAJS) and a heavy snowfall that had occurred over the Himalaya during the preceding week. A simple model of a blown snow plume is shown to be consistent with the observations made from the ISS.

Moore, G. W. K.

2004-11-01

62

Product Sheet Wall Mount Lift  

E-print Network

Product Sheet Wall Mount Lift Ergotron® Neo-FlexTM 870-05-061, rev. 12/11/07 www-Flex Wall Mount Lift! CF patented lift-and-pivot motion technology adjusts with a light touch. Raise-Flex Wall Mount Lift Commercial Part Number: 60-577-195 (black) Options: Works with a variety of Ergotron

Saskatchewan, University of

63

Active control of sound transmission through a stiffened panel using a hybrid control strategy  

Microsoft Academic Search

This article presents active control laws for sound transmission through a stiffened panel in the low-frequency range. A stiffened panel mounted on a metallic box is used to simulate aircraft fuselage and cabin system. A loudspeaker located outside the box is driven by band-limited white noise to exert acoustic excitation. Dynamic properties of the stiffened panel are characterized through a

Ming Yuan; Hongli Ji; Jinhao Qiu; Tianbing Ma

2012-01-01

64

Who discovered Mount Everest?  

NASA Astrophysics Data System (ADS)

The discovery that Mount Everest is the highest mountain in the world was made by the officers of the Survey of India. This organization measured a network of triangulation across India between 1800 and 1870. In order to reduce the measurements to geodetic coordinates, it was necessary to determine the size and shape of the earth. This was accomplished by measuring the length of an arc of the meridian under the direction of the Surveyor General, Sir George Everest. This measurement disagreed with the observations of the stars for latitude by 5 seconds of arc (530 ft or 162 m). In 1855, Pratt and Airy pointed out that the discrepancy was due to the gravitational effect of the Himalayas. Their work was the first indication that the material of the earth's crust under the mountains is lighter than that under plains. During the course of the survey the officers made observations on the snowy Himalayas. They were excluded from Nepal; observations had to be taken from more than 100 mi (160 km) away in jungles infested by malaria. Mount Everest was observed by three different officers between November 27, 1847, and January 17, 1850. The height of the mountain had to be determined by the (human) computers in the survey headquarters in Dehra Dun. The fact that it is the highest mountain in the Himalayas, and probably in the world, was announced by Surveyor General Andrew Waugh in 1856. It is not clear whether the chief computer who made the calculations was an Indian, Radanath Sikhdar, or an Englishman born in India of an Indian mother, John B. N. Hennesy. The local name for the mountain, if it had any, was unknown, so Waugh named it Mount Everest, in honor of the great scientist who was largely responsible for the accomplishments of the Survey of India.

Dickey, Parke A.

65

Mount Sinai Hospital: Blueprint  

NSDL National Science Digital Library

Led by Dr. Christopher Hogue of the Samuel Lunenfeld Research Institute at Mount Sinai Hospital the Blueprint Initiative "develops, hosts and maintains public biological databases and Bioinformatics software tools such as BIND, SeqHound and Distributed Folding." The Blueprint research program also has a sister node located at the National University of Singapore. In addition to providing access to a variety of databases and software, the Blueprint website offers links to a number of downloadable research publications. Site visitors will also find job postings (when available) in the areas of software development, and curation. Additional Blueprint services include user help, educational and outreach support, and product documentation.

66

Plasma Panel Based Radiation Detectors  

SciTech Connect

The plasma panel sensor (PPS) is a gaseous micropattern radiation detector under current development. It has many operational and fabrication principles common to plasma display panels (PDPs). It comprises a dense matrix of small, gas plasma discharge cells within a hermetically sealed panel. As in PDPs, it uses non-reactive, intrinsically radiation-hard materials such as glass substrates, refractory metal electrodes, and mostly inert gas mixtures. We are developing these devices primarily as thin, low-mass detectors with gas gaps from a few hundred microns to a few millimeters. The PPS is a high gain, inherently digital device with the potential for fast response times, fine position resolution (< 50 m RMS) and low cost. In this paper we report here on prototype PPS experimental results in detecting betas, protons and cosmic muons, and we extrapolate on the PPS potential for applications including detection of alphas, heavy-ions at low to medium energy, thermal neutrons and X-rays.

Friedman, Dr. Peter S. [Integrated Sensors, LLC; Varner Jr, Robert L [ORNL; Ball, Robert [University of Michigan; Beene, James R [ORNL; Ben Moshe, M. [Tel Aviv University; Benhammou, Yan [Tel Aviv University; Chapman, J. Wehrley [University of Michigan; Etzion, E [Tel Aviv University; Ferretti, Claudio [University of Michigan; Bentefour, E [Ion Beam Applications; Levin, Daniel S. [University of Michigan; Moshe, M. [Tel Aviv University; Silver, Yiftah [Tel Aviv University; Weaverdyck, Curtis [University of Michigan; Zhou, Bing [University of Michigan

2013-01-01

67

Heat exchanger panel  

NASA Technical Reports Server (NTRS)

The present invention relates to a heat exchanger panel which has broad utility in high temperature environments. The heat exchanger panel has a first panel, a second panel, and at least one fluid containment device positioned intermediate the first and second panels. At least one of the first panel and the second panel have at least one feature on an interior surface to accommodate the at least one fluid containment device. In a preferred embodiment, each of the first and second panels is formed from a high conductivity, high temperature composite material. Also, in a preferred embodiment, the first and second panels are joined together by one or more composite fasteners.

Warburton, Robert E. (Inventor); Cuva, William J. (Inventor)

2005-01-01

68

Mount Auburn Cemetery  

NSDL National Science Digital Library

The bucolic grounds of Mount Auburn Cemetery are fascinating, and have provided solace to thousands of departed souls since 1831. The grounds are also quite historic and the cemetery's website provides ample information for historians, sociologists, and others who might be interested in studying this unique place. New visitors should read the reminisces offered by persons of note in the "What Makes This Place Special?" There are paens offered up by William Ellery Channing, Emily Elizabeth Parsons, and Dorothea Dix. Moving along, the Visit section offers information on guided walks, birding tours around the grounds, and special events. Of course, there is also information on the more traditional activities and ceremonies associated with any cemetery available under the Cemetery link.

2012-01-01

69

Mount Bailey, Oregon  

NSDL National Science Digital Library

This site features links to all aspects of Mt. Bailey, a volcano in the Cascade Range, including its geographic setting, and geologic and eruptive history. Mount Bailey is the southernmost volcano in a north-south-trending volcanic chain 10 kilometers long that rises west of Diamond Lake. This mountain was originally know as Old Baldy, and was probably mistakenly recorded as Old Bailey. It was known as Youxlokes to the Klamath, which meant Medicine Mountain and, according to legend, medicine men and priests often feasted on the summit and communed with the upper world. Links labeled 'Special Items of Interest' lead to information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

70

Mount St. Helens  

NSDL National Science Digital Library

The Mount St. Helens Web page was built by a student in Vancouver, Washington and offers images, stories, and curriculum related to the eruption of the volcano in 1980. Over 1,500 images are available allowing tours of the volcano before, during, and after the eruption. Learn about the people, animals, and plants affected by the blast, and find out how the earth heals itself from an event of this magnitude. The Living Laboratory Curriculum section takes advantage of a unique opportunity to relate a presently-observable volcanic phenomenon to study plant succession, animal behavior, evolutionary and geologic processes, ecology, weather patterns and environmental issues. Links to other volcano-related sites include NASA's Volcano World.

71

Mount St. Helens Flyover  

NASA Technical Reports Server (NTRS)

This Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of Mt. St. Helens volcano in Washington State was acquired on August 8, 2000 and covers an area of 37 by 51 km. Mount Saint Helens, a volcano in the Cascade Range of southwestern Washington that had been dormant since 1857, began to show signs of renewed activity in early 1980. On 18 May 1980, it erupted with such violence that the top of the mountain was blown off, spewing a cloud of ash and gases that rose to an altitude of 19 kilometers. The blast killed about 60 people and destroyed all life in an area of some 180 square kilometers (some 70 square miles), while a much larger area was covered with ash and debris. It continues to spit forth ash and steam intermittently. As a result of the eruption, the mountain's elevation decreased from 2,950 meters to 2,549 meters. The simulated fly-over was produced by draping ASTER visible and near infrared image data over a digital topography model, created from ASTER's 3-D stereo bands. The color was computer enhanced to create a 'natural' color image, where the vegetation appears green. The topography has been exaggerated 2 times to enhance the appearance of the relief. Landsat7 aquired an image of Mt. St. Helens on August 22, 1999. Image and animation courtesy NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.

2002-01-01

72

Solar energy collecting panel  

Microsoft Academic Search

A solar energy collecting panel comprises a hollow collector through which an intermediate fluid is circulated to be warmed by solar radiation incident on the panel. The panel comprises a panel body including a general channel-shaped section comprising first wall having a pair of side walls extending along and projecting from a pair of opposed edges of said first wall,

Giuganino

1980-01-01

73

Solar energy heating panel  

Microsoft Academic Search

A solar energy collecting and radiating panel for heating a fluid such as air circulating in an enclosure disposed behind the panel. The panel is in the form of a pan made of sheet metal, such as thin aluminum, darkened on its irradiated surface, the blackened or darkened surface being protected by a pane of glass. The panel has a

McMurtrie

1984-01-01

74

Detector Mount Design for IGRINS  

NASA Astrophysics Data System (ADS)

The Immersion Grating Infrared Spectrometer (IGRINS) is a near-infrared wide-band high-resolution spectrograph jointly developed by the Korea Astronomy and Space Science Institute and the University of Texas at Austin. IGRINS employs three HAWAII-2RG Focal Plane Array (H2RG FPA) detectors. We present the design and fabrication of the detector mount for the H2RG detector. The detector mount consists of a detector housing, an ASIC housing, a Field Flattener Lens (FFL) mount, and a support base frame. The detector and the ASIC housing should be kept at 65 K and the support base frame at 130 K. Therefore they are thermally isolated by the support made of GFRP material. The detector mount is designed so that it has features of fine adjusting the position of the detector surface in the optical axis and of fine adjusting yaw and pitch angles in order to utilize as an optical system alignment compensator. We optimized the structural stability and thermal characteristics of the mount design using computer-aided 3D modeling and finite element analysis. Based on the structural and thermal analysis, the designed detector mount meets an optical stability tolerance and system thermal requirements. Actual detector mount fabricated based on the design has been installed into the IGRINS cryostat and successfully passed a vacuum test and a cold test.

Oh, Jae Sok; Park, Chan; Cha, Sang-Mok; Yuk, In-Soo; Park, Kwijong; Kim, Kang-Min; Chun, Moo-Young; Ko, Kyeongyeon; Oh, Heeyoung; Jeong, Ueejeong; Nah, Jakyoung; Lee, Hanshin; Jaffe, Daniel T.

2014-06-01

75

The in-flight calibration of a helicopter-mounted Daedalus multispectral scanner  

SciTech Connect

A convenient way that has been used to calibrate, in-flight, a helicopter-mounted Daedalus multispectral scanner is described. It used four large canvas panels laid out in a square with a Spectralon panel as a reference. A calibrated Barnes modular multispectral radiometer, carried on a 2.2-m boom was rotated around a 2.5-m high tripod at the center of the square. The radiometer sampled the four large panels and the Spectralon panel once every two minutes. Atmospheric spectral transmittance measurements were made using a filter radiometer on an autotracking mount during the morning of the flight. The reflectance and optical depth data were used in an atmospheric radiative transfer code to predict the spectral radiances at the scanner. The calibration was completed by comparing the image digital counts to the predicted spectral radiances. 7 refs., 2 figs., 5 tabs.

Balick, L.K.; Golanics, C.J.; Shines, J.E. (EG and G Energy Measurements, Inc., Las Vegas, NV (USA)); Biggar, S.F.; Slater, P.N. (Arizona Univ., Tucson, AZ (USA). Optical Sciences Center)

1991-01-01

76

Panel options for large precision radio telescopes  

NASA Astrophysics Data System (ADS)

The Cornell Caltech Atacama Telescope (CCAT) is a 25 m diameter telescope that will operate at wavelengths as short as 200 microns. CCAT will have active surface control to correct for gravitational and thermal distortions in the reflector support structure. The accuracy and stability of the reflector panels are critical to meeting the 10 micron HWFE (half wave front error) for the whole system. A system analysis based upon a versatile generic panel design has been developed and applied to numerous possible panel configurations. The error analysis includes the manufacturing errors plus the distortions from gravity, wind and thermal environment. The system performance as a function of panel size and construction material is presented. A compound panel approach is also described in which the reflecting surface is provided by tiles mounted on thermally stable and stiff sub-frames. This approach separates the function of providing an accurate reflecting surface from the requirement for a stable structure that is attached to the reflector support structure on three computer controlled actuators. The analysis indicates that there are several compound panel configurations that will easily meet the stringent CCAT requirements.

Woody, David; MacDonald, Dan; Bradford, Matt; Chamberlin, Richard; Dragovan, Mark; Goldsmith, Paul; Lamb, James; Radford, Simon; Zmuidzinas, Jonas

2008-07-01

77

78 FR 59954 - Notice of Inventory Completion: Michigan State Police, Mount Pleasant Post, Mount Pleasant, MI  

Federal Register 2010, 2011, 2012, 2013

...Michigan State Police, Mount Pleasant Post, Mount Pleasant, MI AGENCY: National...Michigan State Police, Mount Pleasant Post, has completed an inventory of human remains...Michigan State Police, Mount Pleasant Post. If no additional requestors come...

2013-09-30

78

Kinematic high bandwidth mirror mount  

DOEpatents

An adjustable mirror mount system for a mirror is disclosed comprising a mirror support having a planar surface thereon, a mirror frame containing a mirror and having a planar surface behind the mirror facing the planar surface of the mirror support and parallel to the reflecting surface of the mirror and mounted pivotally to the mirror support at a point central to the frame, a first adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along one axis lying in the plane of the planar surface of the mirror frame; and a second adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along a second axis lying in the plane of the planar surface of the mirror frame and perpendicular to the first axis.

Kuklo, Thomas C. (Oakdale, CA)

1995-01-01

79

Kinematic high bandwidth mirror mount  

DOEpatents

An adjustable mirror mount system for a mirror is disclosed comprising a mirror support having a planar surface thereon, a mirror frame containing a mirror and having a planar surface behind the mirror facing the planar surface of the mirror support and parallel to the reflecting surface of the mirror and mounted pivotally to the mirror support at a point central to the frame, a first adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along one axis lying in the plane of the planar surface of the mirror frame; and a second adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along a second axis lying in the plane of the planar surface of the mirror frame and perpendicular to the first axis. 7 figures.

Kuklo, T.C.

1995-03-21

80

Mechanical aspects of beached barge-mounted methanol plant  

Microsoft Academic Search

Whereas LNG is a means of transporting natural gas for quantities in excess of 2000 million cu ft\\/day, conversion of the gas to methanol is favored in the 50-2000 million cu ft\\/day range. Davy Powergas Inc. in collaboration with Mitsubishi Heavy Industries Ltd. has designed a barge-mounted 2000 metric ton\\/day methanol plant based on the ICI Low-Pressure technology. With the

M. C. Goodman; D. R. Aldridge

1979-01-01

81

GIS Ethics Panel Preparation Panel Session  

E-print Network

GIS Ethics Panel Preparation Panel Session: 3236 Geographic Information Ethics and GIScience II State University Geney Terry - GISCI Session Description: Ethical engagements with the multitude of GIS, the variety of applications of GIS&T has led the U.S. Department of Labor to highlight "geographic technology

Wright, Dawn Jeannine

82

Panel Organization 1. Panel on Structural Geology & Geoengineering  

E-print Network

Appendix A Panel Organization 1. Panel on Structural Geology & Geoengineering Chair: Dr. Clarence R Technical Exchange (open) Panel on Structural Geology & Geoengineering Denver, Colorado Topic: DOE & Performance Analysis and the Panel on Structural Geology & Geoengineering Denver, Colorado Topic: Repository

83

Panel Organization 1. Panel on Structural Geology & Geoengineering  

E-print Network

Appendix A Panel Organization 1. Panel on Structural Geology & Geoengineering Chair: Dr. Clarence R) Panel on Structural Geology & Geoengineering Denver, Colorado Topic: DOE presentation on the exploratory and the Panel on Structural Geology & Geoengineering Denver, Colorado Topic: Repository system design

84

Optimum operating conditions of a solar cell panel and prediction of solar radiation in Sanaa, Yemen  

Microsoft Academic Search

Results of a study of the performance of solar cells under nominal operating conditions in Yemen are reported. The solar cell panel comprised 14 Si cells of .003 sq m surface area each, and was mounted on a rooftop with the solar radiation being measured by a pyranometer. Further monitoring was performed of the panel surface temperature, the ambient air

A. Khogali; M. R. I. Ramadan

1982-01-01

85

TRMM Solar Array Panels  

NASA Technical Reports Server (NTRS)

This final report presents conclusions/recommendations concerning the TRMM Solar Array; deliverable list and schedule summary; waivers and deviations; as-shipped performance data, including flight panel verification matrix, panel output detail, shadow test summary, humidity test summary, reverse bias test panel; and finally, quality assurance summary.

1998-01-01

86

Solar energy collection panel  

Microsoft Academic Search

A solar energy collection panel is described for collecting solar energy to heat water. The panel is a simple, two component arrangement. That is, a cast, one piece construction provides a combined base and frame for the panel and defines the bottom and side walls of a plurality of separate channels for the flow of water to be heated directly

Ogilvie

1981-01-01

87

Solar energy collector panel  

Microsoft Academic Search

An elongated solar collector includes a plurality of longitudinal side-by-side elongated panel sections having interconnected adjacent longitudinal marginal edges and including integral portions defining fluid passages extending longitudinally along the panel sections and opening endwise outwardly of the opposite ends of the panel sections. Elongated fluid inlet and outlet manifolds extend transversely of the opposite ends of the solar collector

D. S. Ellis; W. B. Simmons

1981-01-01

88

Solar energy collector panel  

Microsoft Academic Search

A solar energy collecting panel includes a pair of elongated spaced apart tubular fluid headers formed of heat conductive material and a plurality of elongated hollow tubular panel elements or risers formed of heat conductive material extended between the headers. The panel elements have an outer wall adapted to face and absorb solar radiation and transfer the heat directly into

Hubbard

1978-01-01

89

Motor vehicle engine mounting arrangement  

SciTech Connect

A mounting arrangement is described for mounting an engine on a chassis of a motor vehicle comprising two rigid outer parts connected respectively to the engine and chassis, and two parts of elastomeric material connected respectively to the rigid outer parts. A core of rigid material is disposed between the elastomeric parts having a moment of inertia so as to vibrate at substantially the frequency of the engine but in a direction substantially counter to the engine vibration. The core is shaped relative to the rigid outer parts so that in one of the directions of vibration thereof the core moves in a direction out from between the rigid outer parts to effect a decrease in the distance thereof from the rigid outer parts thereby effecting an increase in the spring rate of the mounting arrangement.

Beer, W.

1987-02-10

90

An improved instrument mounting arm.  

PubMed

Although some form of commercial instrument mounting arm is available, a paucity of information in the literature may cause problems in selecting the most appropriate model for an ENT department wishing to trial their invention for use in the clinic or operating theatre. The instrument mounting arm described here is based on existing designs used by hobbyists and model makers for many years but the main benefit of this innovation is its multi-purpose use in the operating theatre and cost effectiveness since it is made of aluminum alloy. It is compact, stable and easily adjustable and can incorporate an endoscope holder or an operating end piece to mount various ENT instruments that offers considerable advantages to the unassisted operator. PMID:11320829

Gendeh, B S; Khalid, B A; Alberti, P W

2001-02-01

91

Safety Panel Resources  

NASA Technical Reports Server (NTRS)

The goal of this paper is to explore what resources are potentially available to safety panels and to provide some guidance on how to utilize those resources. While the examples used in this paper will concentrate on the Flight Equipment and Reliability Review Panel (FESRRP) and Extravehicular Activity (EVA) hardware that have come through that panel, as well as resources at Johnson Space Center, the paper will address how this applies to safety panels in general, and where possible cite examples for other safety panels.

Stewart, Christine E.

2008-01-01

92

Quiet Honeycomb Panels  

NASA Technical Reports Server (NTRS)

Sandwich honeycomb composite panels are lightweight and strong, and, therefore, provide a reasonable alternative to the aluminum ring frame/stringer architecture currently used for most aircraft airframes. The drawback to honeycomb panels is that they radiate noise into the aircraft cabin veil- efficiently provoking the need for additional sound treatment which adds weight and reduces the material's cost advantage. A series of honeycomb panels was made -hick incorporated different design strategies aimed at reducing the honeycomb panels' radiation efficiency while at the same time maintaining their strength. The majority of the designs were centered around the concept of creating areas of reduced stiffness in the panel by adding voids and recesses to the core. The effort culminated with a reinforced/recessed panel which had 6 dB higher transmission loss than the baseline solid core panel while maintaining comparable strength.

Palumbo, Daniel L.; Klos, Jacob

2010-01-01

93

Interactive optical panel  

DOEpatents

An interactive optical panel assembly includes an optical panel having a plurality of ribbon optical waveguides stacked together with opposite ends thereof defining panel first and second faces. A light source provides an image beam to the panel first face for being channeled through the waveguides and emitted from the panel second face in the form of a viewable light image. A remote device produces a response beam over a discrete selection area of the panel second face for being channeled through at least one of the waveguides toward the panel first face. A light sensor is disposed across a plurality of the waveguides for detecting the response beam therein for providing interactive capability. 10 figs.

Veligdan, J.T.

1995-10-03

94

Mount Holyoke College Reshapes Reengineering.  

ERIC Educational Resources Information Center

Reports on two reengineering projects at Mount Holyoke College (Massachusetts) that led participants to conclude that business process reengineering (BPR) in higher education involves a magnitude of cultural change that differentiates it significantly from BPR in the corporate world. The two projects involved redesigning a library department and

Carnevale, Madeline; Beretska, Sandra; Morrissey, Debra

1999-01-01

95

Mount Rainier active cascade volcano  

NASA Technical Reports Server (NTRS)

Mount Rainier is one of about two dozen active or recently active volcanoes in the Cascade Range, an arc of volcanoes in the northwestern United States and Canada. The volcano is located about 35 kilometers southeast of the Seattle-Tacoma metropolitan area, which has a population of more than 2.5 million. This metropolitan area is the high technology industrial center of the Pacific Northwest and one of the commercial aircraft manufacturing centers of the United States. The rivers draining the volcano empty into Puget Sound, which has two major shipping ports, and into the Columbia River, a major shipping lane and home to approximately a million people in southwestern Washington and northwestern Oregon. Mount Rainier is an active volcano. It last erupted approximately 150 years ago, and numerous large floods and debris flows have been generated on its slopes during this century. More than 100,000 people live on the extensive mudflow deposits that have filled the rivers and valleys draining the volcano during the past 10,000 years. A major volcanic eruption or debris flow could kill thousands of residents and cripple the economy of the Pacific Northwest. Despite the potential for such danger, Mount Rainier has received little study. Most of the geologic work on Mount Rainier was done more than two decades ago. Fundamental topics such as the development, history, and stability of the volcano are poorly understood.

1994-01-01

96

36 Views of Mount Rainier  

ERIC Educational Resources Information Center

Look for ways to take students on virtual journeys to faraway places, and then connect the experience to something they can relate to on a more personal level. In this article, the author describes a block-printing unit inspired by Japanese printmaker, Katsushika Hokusai (1760-1849), and his series of art prints, "Thirty-six Views of Mount Fuji."

Fortune, Tracy

2011-01-01

97

Mount St. Helens aerosol evolution  

NASA Technical Reports Server (NTRS)

Stratospheric aerosol samples were collected using a wire impactor during the year following the eruption of Mount St. Helens. Analysis of samples shows that aerosol volume increased for 6 months due to gas-to-particle conversion and then decreased to background levels in the following 6 months.

Oberbeck, V. R.; Farlow, N. H.; Fong, W.; Snetsinger, K. G.; Ferry, G. V.; Hayes, D. M.

1982-01-01

98

[Water cults on Soratte Mount].  

PubMed

Mount Soratte is a limestone ridge that rises on a lonely plateau of Pliocene tuff on the right of the Tiber, about forty kilometers North of Rome. Studies related to human settlements during prehistory in this territory have been sporadic and occasional. The first evidence of prehistoric cults on mount Soratte has been found in the early Fifties when ajar, dating back to Neolithic times, was discovered in the cave of the Meri. The jar was placed in a position to be always filled of water and indicates the existence of ancient practices of worship linked to groundwater. In the Middle Ages, although caves became a step towards the Hell, dripping caves were often associated with the magical-religious and therapeutic aspects of water linked to fertility in the popular imagination. In the cave church of the Saint Romana, on the eastern slope of Mount Soratte close to Meri, there is a small marble basin near the altar and the water drips from the rock above it. This water is taken out for devotion and drunk by mothers who did not get milk from their breasts. Recently, the water of the Saint Romana would have drained as a result of an act of sacrilege, albeit unintentionally, as reported in a oral testimony. Overall, the territory of Mount Soratte is characterized by a sharp and clear karst. This causes the water, that collects on the inside, coming out in many springs all around the valley. This water is collected to supply fountains used years ago by farmers and livestock and nowadays may represent a cultural space of social life with the aim to build a strong link with the territory and a new awareness of the past and history of the countryside around Mount Soratte. PMID:23057207

Falchetti, Mario; Ottini, Laura

2011-01-01

99

Advanced solar panel designs  

Microsoft Academic Search

Solar panel designs that utilize new high-efficiency solar cells and lightweight rigid panel technologies are described. The resulting designs increase the specific power (W\\/kg) achievable in the near-term and are well suited to meet the demands of higher performance small satellites (smallsats). Advanced solar panel designs have developed and demonstrated on two NASA contracts at TECSTAR. The first used 19%

E. L. Ralph; E. B. Linder

1996-01-01

100

Sample mounts for microcrystal crystallography  

NASA Technical Reports Server (NTRS)

Sample mounts (10) for mounting microcrystals of biological macromolecules for X-ray crystallography are prepared by using patterned thin polyimide films (12) that have curvature imparted thereto, for example, by being attached to a curved outer surface of a small metal rod (16). The patterned film (12) preferably includes a tip end (24) for holding a crystal. Preferably, a small sample aperture is disposed in the film for reception of the crystal. A second, larger aperture can also be provided that is connected to the sample aperture by a drainage channel, allowing removal of excess liquid and easier manipulation in viscous solutions. The curvature imparted to the film (12) increases the film's rigidity and allows a convenient scoop-like action for retrieving crystals. The polyimide contributes minimally to background and absorption, and can be treated to obtain desired hydrophobicity or hydrophilicity.

Thorne, Robert E. (Inventor); Stum, Zachary (Inventor); O'Neill, Kevin (Inventor); Kmetko, Jan (Inventor)

2009-01-01

101

Solar reflection panels  

DOEpatents

A solar collector comprising a glass mirror, and a composite panel, wherein the back of the mirror is affixed to a front surface of the composite panel. The composite panel comprises a front sheet affixed to a surface of a core material, preferably a core material comprising a honeycomb structure, and a back sheet affixed to an opposite surface of the core material. The invention may further comprise a sealing strip, preferably comprising EPDM, positioned between the glass mirror and the front surface of the composite panel. The invention also is of methods of making such solar collectors.

Diver, Jr., Richard B. (Albuquerque, NM); Grossman, James W. (Albuquerque, NM); Reshetnik, Michael (Boulder, CO)

2006-07-18

102

Quaternary glaciation of Mount Everest  

Microsoft Academic Search

The Quaternary glacial history of the Rongbuk valley on the northern slopes of Mount Everest is examined using field mapping, geomorphic and sedimentological methods, and optically stimulated luminescence (OSL) and 10Be terrestrial cosmogenic nuclide (TCN) dating. Six major sets of moraines are present representing significant glacier advances or still-stands. These date to >330ka (Tingri moraine), >41ka (Dzakar moraine), 2427ka (Jilong

Lewis A. Owen; Ruth Robinson; Douglas I. Benn; Robert C. Finkel; Nicole K. Davis; Chaolu Yi; Jaakko Putkonen; Dewen Li; Andrew S. Murray

2009-01-01

103

Quaternary glaciation of Mount Everest  

NASA Astrophysics Data System (ADS)

The Quaternary glacial history of the Rongbuk valley on the northern slopes of Mount Everest is examined using field mapping, geomorphic and sedimentological methods, and optically stimulated luminescence (OSL) and 10Be terrestrial cosmogenic nuclide (TCN) dating. Six major sets of moraines are present representing significant glacier advances or still-stands. These date to >330 ka (Tingri moraine), >41 ka (Dzakar moraine), 24-27 ka (Jilong moraine), 14-17 ka (Rongbuk moraine), 8-2 ka (Samdupo moraines) and 1.6 ka (Xarlungnama moraine), and each is assigned to a distinct glacial stage named after the moraine. The Samdupo glacial stage is subdivided into Samdupo I (6.8-7.7 ka) and Samdupo II (2.4 ka). Comparison with OSL and TCN defined ages on moraines on the southern slopes of Mount Everest in the Khumbu Himal show that glaciations across the Everest massif were broadly synchronous. However, unlike the Khumbu Himal, no early Holocene glacier advance is recognized in the Rongbuk valley. This suggests that the Khumbu Himal may have received increased monsoon precipitation in the early Holocene to help increase positive glacier mass balances, while the Rongbuk valley was too sheltered to receive monsoon moisture during this time and glaciers could not advance. Comparison of equilibrium-line altitude depressions for glacial stages across Mount Everest reveals asymmetric patterns of glacier retreat that likely reflects greater glacier sensitivity to climate change on the northern slopes, possibly due to precipitation starvation.

Owen, Lewis A.; Robinson, Ruth; Benn, Douglas I.; Finkel, Robert C.; Davis, Nicole K.; Yi, Chaolu; Putkonen, Jaakko; Li, Dewen; Murray, Andrew S.

2009-07-01

104

Mounting support for a photovoltaic module  

DOEpatents

A mounting support for a photovoltaic module is described. The mounting support includes a foundation having an integrated wire-way ledge portion. A photovoltaic module support mechanism is coupled with the foundation.

Brandt, Gregory Michael; Barsun, Stephan K.; Coleman, Nathaniel T.; Zhou, Yin

2013-03-26

105

Holding fixture for metallographic mount polishing  

DOEpatents

A fixture is described for holding mounted specimens for polishing, having an arm; a body attached to one end of the arm, the body having at least one flange having an opening to accommodate a mounted specimen; and a means applying pressure against the outer surface of the mounted specimen to hold the specimen in contact with the polishing surface. 3 figs.

Barth, C.H.; Cramer, C.E.

1997-12-30

106

Analysis of Panel Data  

Microsoft Academic Search

Panel data models have become increasingly popular among applied researchers due to their heightened capacity for capturing the complexity of human behavior as compared to cross-sectional or time series data models. As a consequence, richer panel data sets also have become increasingly available. This 2003 second edition is a substantial revision of the highly successful first edition of 1986. Advances

Cheng Hsiao

1986-01-01

107

Microgravity Science Research Panel  

NASA Technical Reports Server (NTRS)

This document is a transcription of the Microgravity Science Research Panel's discussion about their research and about some of the contributions that they feel have been important to the field during their time with the program. The panel includes Dr. Eugene Trinh, Dr. Lawrence DeLucas, Dr. Charles Bugg, Dr. David Larson, and Dr. Simon Ostrach.

Carpenter, Bradley M.; Trinh, Eugene H.; DeLucas, Lawrence J.; Larson, David; Koss, Matthew; Ostrach, Simon

2000-01-01

108

Vacuum thermal insulation panel  

Microsoft Academic Search

A vacuum thermal insulation panel comprises a pair of laminated plastic and aluminum sheets together with a plastic edge strip sealed to the edges of the sheets so as to define an evacuable volume in which a glass fiber mat is disposed. The insulation panel of the present invention takes advantage of the light-weight, low cost and low thermal conductivity

J. R. Young; R. M. Schreck

1984-01-01

109

Solar energy absorber panel  

Microsoft Academic Search

Disclosed is a solar energy absorber panel comprising a heat absorbing and conducting sheet and an array of fluid conduits in thermal contact with the sheet. For a given efficiency, the weight of the panel is minimized by providing a sheet thickness of between about 0.001 inch and about 0.006 inch and a conduit density of between about 3 and

Godrick

1976-01-01

110

Solar energy absorbing panel  

Microsoft Academic Search

A solar energy absorbing panel is provided which may be integrally incorporated into a conventional building structure so that it does not protrude from the normal contour of the building , and which utilizes components of the building structure as a part of the collecting apparatus to thereby minimize the cost thereof. The panel is composed of a plurality of

McArthur

1981-01-01

111

AEROSPACE SAFETY ADVISORY PANEL  

E-print Network

January 13, 2011 The Honorable Charles F. Bolden, Jr. Administrator National Aeronautics and SpaceAEROSPACE SAFETY ADVISORY PANEL ANNUAL REPORT FOR 2010 #12;#12;NASA AEROSPACE SAFETY ADVISORY PANEL Administration Washington, DC 20546 Dear Mr. Bolden: Pursuant to Section 106(b) of the National Aeronautics

112

for doubling solar panel  

E-print Network

to produce any juice at all. On average, just 20 percent of the sun's rays actually get converted to energy hot the panels on my roof get and say, `What a waste! We're losing energy!'" says Lusk, a Mines physics professor and solar energy researcher, who admits to checking out his panels and their energy

113

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

The Aerospace Safety Advisory Panel (ASAP) provided oversight on the safety aspects of many NASA programs. In addition, ASAP undertook three special studies. At the request of the Administrator, the panel assessed the requirements for an assured crew return vehicle (ACRV) for the space station and reviewed the organization of the safety and mission quality function within NASA. At the behest of Congress, the panel formed an independent, ad hoc working group to examine the safety and reliability of the space shuttle main engine. Section 2 presents findings and recommendations. Section 3 consists of information in support of these findings and recommendations. Appendices A, B, C, and D, respectively, cover the panel membership, the NASA response to the findings and recommendations in the March 1992 report, a chronology of the panel's activities during the reporting period, and the entire ACRV study report.

1993-01-01

114

Panel 5: Microbiology and Immunology Panel  

PubMed Central

Objective The objective is to perform a comprehensive review of the literature from January 2007 through June 2011 on the virology, bacteriology, and immunology related to otitis media. Data Sources PubMed database of the National Library of Medicine. Review Methods Three subpanels with co-chairs comprising experts in the virology, bacteriology, and immunology of otitis media were formed. Each of the panels reviewed the literature in their respective fields and wrote draft reviews. The reviews were shared with all panel members, and a second draft was created. The entire panel met at the 10th International Symposium on Recent Advances in Otitis Media in June 2011 and discussed the review and refined the content further. A final draft was created, circulated, and approved by the panel. Conclusion Excellent progress has been made in the past 4 years in advancing an understanding of the microbiology and immunology of otitis media. Advances include laboratory-based basic studies, cell-based assays, work in animal models, and clinical studies. Implications for Practice The advances of the past 4 years formed the basis of a series of short-term and long-term research goals in an effort to guide the field. Accomplishing these goals will provide opportunities for the development of novel interventions, including new ways to better treat and prevent otitis media. PMID:23536533

Murphy, Timothy F.; Chonmaitree, Tasnee; Barenkamp, Stephen; Kyd, Jennelle; Nokso-Koivisto, Johanna; Patel, Janak A.; Heikkinen, Terho; Yamanaka, Noboru; Ogra, Pearay; Swords, W. Edward; Sih, Tania; Pettigrew, Melinda M.

2014-01-01

115

Mount Apatite Park, Auburn, Maine  

NSDL National Science Digital Library

This guide discusses the geology, mineralogy, and mineral collecting opportunities of the Mount Apatite quarries at Auburn, Maine. Topics include the history and occurrence of the granite pegmatites, which contain collectible specimens of apatite, tourmaline, lepidolite, and other minerals; the history of glaciation in the area; and the history of the mining industry in Auburn, an important producer of commercial feldspar in the early 1900s. There is also information for mineral collectors, including permission and access, directions, and information on the exposures and how to extract specimens from them. References and links to additonal information are included.

116

Low-cost adjustable mirror mount  

NASA Astrophysics Data System (ADS)

Complex optical systems commonly employ adjustable optical mounts for alignment purposes. The design of a low-cost adjustable mirror mount that provides simple tilt and height adjustments is described. This mirror mount employs conventional machining and standard off-the-shelf hardware and is, therefore, very suitable for low-cost rapid prototyping applications. A diamond-machined metal mirror is directly assembled to the mount with three screws and two precision dowel pins. The adjustments are provided by three spring-loaded screws between the mount and a fixed baseplate. Two set screws are used for locking purposes after the adjustments have been made.

Ahmad, Anees

1994-06-01

117

Make Your Own Solar Panel.  

ERIC Educational Resources Information Center

Presents an activity in which students make a simulated solar panel to learn about the principles behind energy production using solar panels. Provides information about how solar panels function to produce energy. (MCO)

Suzuki, David

1992-01-01

118

Nozzle and shroud assembly mounting structure  

DOEpatents

The present nozzle and shroud assembly mounting structure configuration increases component life and reduces maintenance by reducing internal stress between the mounting structure having a preestablished rate of thermal expansion and the nozzle and shroud assembly having a preestablished rate of thermal expansion being less than that of the mounting structure. The mounting structure includes an outer sealing portion forming a cradling member in which an annular ring member is slidably positioned. The mounting structure further includes an inner mounting portion to which a hooked end of the nozzle and shroud assembly is attached. As the inner mounting portion expands and contracts, the nozzle and shroud assembly slidably moves within the outer sealing portion. 3 figs.

Faulder, L.J.; Frey, G.A.; Nielsen, E.W.; Ridler, K.J.

1997-08-05

119

Dual resolution, vacuum compatible optical mount  

DOEpatents

An optical mount for an optical element includes a mounting plate, a lever arm pivot coupled to mounting plate, and an adjustment plate. The optical mount also includes a flexure pivot mechanically coupling the adjustment plate to the mounting plate and a lever arm. The optical mount further includes a first adjustment device extending from the adjustment plate to make contact with the lever arm at a first contact point. A projection of a line from the first contact point to a pivot point, measured along the lever arm, is a first predetermined distance. The optical mount additionally includes a second adjustment device extending from the adjustment plate to make contact with the lever arm at a second contact point. A projection of a line from the second contact point to the pivot point, measured along the lever arm, is a second predetermined distance greater than the first predetermined distance.

Halpin, John Michael (Tracy, CA)

2011-10-04

120

Nozzle and shroud assembly mounting structure  

DOEpatents

The present nozzle and shroud assembly mounting structure configuration increases component life and reduces maintenance by reducing internal stress between the mounting structure having a preestablished rate of thermal expansion and the nozzle and shroud assembly having a preestablished rate of thermal expansion being less than that of the mounting structure. The mounting structure includes an outer sealing portion forming a cradling member in which an annular ring member is slidably positioned. The mounting structure further includes an inner mounting portion to which a hooked end of the nozzle and shroud assembly is attached. As the inner mounting portion expands and contracts, the nozzle and shroud assembly slidably moves within the outer sealing portion.

Faulder, Leslie J. (San Diego, CA); Frey, deceased, Gary A. (late of Seattle, WA); Nielsen, Engward W. (El Cajon, CA); Ridler, Kenneth J. (San Diego, CA)

1997-01-01

121

Mount Rainier, a decade volcano  

SciTech Connect

Mount Rainier, recently designated as a decade volcano, is a 14,410 foot landmark which towers over the heavily populated southern Puget Sound Lowland of Washington State. It last erupted in the mid-1800's and is an obvious threat to this area, yet Rainier has received little detailed study. Previous work has divided Rainier into two distinct pre-glacial eruptive episodes and one post-glacial eruptive episode. In a pilot project, the authors analyzed 253 well-located samples from the volcano for 27 major and trace elements. Their objective is to test the value of chemical compositions as a tool in mapping the stratigraphy and understanding the eruptive history of the volcano which they regard as prerequisite to determining the petrogenesis and potential hazard of the volcano. The preliminary data demonstrates that variation between flows is significantly greater than intra-flow variation -- a necessary condition for stratigraphic use. Numerous flows or groups of flows can be distinguished chemically. It is also apparent from the small variation in Zr abundances and considerable variation in such ratios as Ba/Nb that fractional crystallization plays a subordinate role to some form of mixing process in the origin of the Mount Rainier lavas.

Kuehn, S.C.; Hooper, P.R. (Washington State Univ., Pullman, WA (United States). Dept. of Geology); Eggers, A.E. (Univ. of Puget Sound, Tacoma, WA (United States). Dept. of Geology)

1993-04-01

122

POPOVER Review Panel report  

SciTech Connect

The POPOVER series of high explosive (HE) certification tests was conducted at the Big Explosives Experimental Facility (BEEF) in Area 4 of the Nevada Test Site (NTS). The two primary objectives of POPOVER were to certify that: (1) BEEF meets DOE requirements for explosives facilities and is safe for personnel-occupied operations during testing of large charges of conventional HE. (2) Facility structures and equipment will function as intended when subjected to the effects of these charges. After careful analysis of test results, the POPOVER Review Panel concludes that the POPOVER series met both objectives. Further details on the Review Panel`s conclusions are included in Section 7--Findings and Recommendations.

Davito, A.; Baker, C.J.; King, C.J.; Costerus, B.; Nelson, T.; Prokosch, D.; Pastrnak, J.; Grace, P.

1996-04-10

123

Transonic panel flutter  

NASA Astrophysics Data System (ADS)

FEM is here used to ascertain the stability and aeroelastic response of thin, 2D panels subjected to Mach 0.8-2.5 flows. In the absence of shocks, it is found that the Euler equations used to represent the unsteady flowfield dynamics predict response behaviors resembling those obtained via potential flow methods. Where shocks do play a significant role in the overall motion of the panel, divergence and limit cycle flutter are observed. In the Mach 1.4-1.5 range, flutter involved the higher modes of the panel, tending toward possible chaotic motion.

Davis, Gary A.; Bendiksen, Oddvar O.

1993-04-01

124

Examination of operational dynamics of radiant ceiling panel  

NASA Astrophysics Data System (ADS)

Radiant ceiling panels can be used in large-volume halls, e.g. vehicle repair shops and markets, to heat the entire or specific zones of the enclosed space. The system with radiant panels may be of small water capacity when just one or several units are installed over selected zones to provide additional heating. Depending on dimensions of radiant ceiling panel, its mounting mode and the temperature of its feeding medium, various thermal conditions are created under such panel. Thermal effects are also affected by the mode of thermal or cooling power control and dynamics of such control for an individual radiant panel or a set of panels. The dynamics of attainable radiant ceiling panel capacity was investigated and used as the grounds to determine general requirements for time-domain automatic control programs and those for operation of the controllers. The results presented from the examinations carried out for water radiators are not intended to delineate the requirements for all automatic control loops for water radiators; they are aimed at attracting attention to issues to be considered when preparing the algorithm of automatic control in particular situations.

Dudkiewicz, Edyta; Jadwiszczak, Piotr; Je?owiecki, Janusz

2011-06-01

125

Vacuum thermal insulation panel  

SciTech Connect

A vacuum thermal insulation panel comprises a pair of laminated plastic and aluminum sheets together with a plastic edge strip sealed to the edges of the sheets so as to define an evacuable volume in which a glass fiber mat is disposed. The insulation panel of the present invention takes advantage of the light-weight, low cost and low thermal conductivity of plastic materials to form an evacuable volume into which a glass fiber insulating mat is disposed for support of the panel which is evacuated to provide improved thermal insulation. Additionally, a gas permeation barrier is employed on the edge strip of the panel to minimize gas permeation at its edges. A metal foil layer provides gas permeation protection through the large surface areas of the sheets themselves.

Young, J.R.; Schreck, R.M.

1984-04-24

126

Hepatitis virus panel  

MedlinePLUS

The hepatitis virus panel is a series of blood tests used to detect current or past infection by hepatitis A , hepatitis ... samples for more than one kind of hepatitis virus at the same time. Antibody and antigen tests ...

127

Commerical Research Panel  

NASA Technical Reports Server (NTRS)

This document is a transcription of the Commercial Research Panel's discussion at 'The Spacelab Accomplishments Forum'. Dr. Stodieck, Dr. David Klaus, Dr. Weija Zhou, and Dr. Albert Sacco talk about the commercial research that has taken place on Spacelab.

Kearns, Joel K.; Stodieck, Louis; Klaus, David; Zhou, Wei-Ja; Sacco, Albert

2000-01-01

128

Panel Organization 1. Panel on Structural Geology & Geoengineering  

E-print Network

Appendix A Panel Organization 1. Panel on Structural Geology & Geoengineering Chair: Dr. Clarence R. Dennis L. Price 2. Panel on Hydrogeology & Geochemistry Co-Chair: Dr. Patrick A. Domenico Staff: Dr. Panel on the Engineered Barrier System Chair: Dr. Ellis D. Verink, Jr. Staff: Dr. Carlos A.W. Di Bella

129

3. VIEW OF SOUTH PANELS. THREE INTERIOR PANELS HAVE OVERLAPPING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. VIEW OF SOUTH PANELS. THREE INTERIOR PANELS HAVE OVERLAPPING DIAGONAL RODS WHILE FLANKING EXTERIOR PANELS HAVE SINGLE DIAGONAL RODS. PANELS DIVIDED BY VERTICAL BARS COMPRISED OF CHANNEL BEAMS CONNECTED BY BLOCKS AND BOLTED TOGETHER. - Peevy Road Bridge, Peevy Road spanning Perkiomen Creek in Upper Hanover Township, East Greenville, Montgomery County, PA

130

Hexagon solar power panel  

NASA Technical Reports Server (NTRS)

A solar energy panel support is described upon which silicon cells are arrayed. The cells are wafer thin and of two geometrical types, both of the same area and electrical rating, namely hexagon cells and hourglass cells. The hourglass cells are composites of half hexagons. A near perfect nesting relationship of the cells achieves a high density packing whereby optimum energy production per panel area is achieved.

Rubin, I. (inventor)

1978-01-01

131

Gas filled panel insulation  

DOEpatents

A structural or flexible highly insulative panel which may be translucent, is formed from multi-layer polymeric material in the form of an envelope surrounding a baffle. The baffle is designed so as to minimize heat transfer across the panel, by using material which forms substantially closed spaces to suppress convection of the low conductivity gas fill. At least a portion of the baffle carries a low emissivity surface for suppression of infrared radiation.

Griffith, Brent T. (Berkeley, CA); Arasteh, Dariush K. (Oakland, CA); Selkowitz, Stephen E. (Piedmont, CA)

1993-01-01

132

Gas filled panel insulation  

DOEpatents

A structural or flexible highly insulative panel which may be translucent, is formed from multi-layer polymeric material in the form of an envelope surrounding a baffle. The baffle is designed so as to minimize heat transfer across the panel, by using material which forms substantially closed spaces to suppress convection of the low conductivity gas fill. At least a portion of the baffle carries a low emissivity surface for suppression of infrared radiation. 18 figures.

Griffith, B.T.; Arasteh, D.K.; Selkowitz, S.E.

1993-12-14

133

Pop-Art Panels  

ERIC Educational Resources Information Center

James Rosenquist's giant Pop-art panels included realistic renderings of well-known contemporary foods and objects, juxtaposed with famous people in the news--largely from the 1960s, '70s and '80s--and really serve as visual time capsules. In this article, eighth-graders focus on the style of James Rosenquist to create their own Pop-art panel that

Alford, Joanna

2012-01-01

134

Mount St. Helens: the aftermath  

SciTech Connect

During the May 18, 1980 eruption of Mount St. Helens, ash fell over a 100,000 sq mile area to the east. The Idaho studies showed that, although the ashfall altered the food chains of some forest streams, within a year they fully recovered. The effects of ashfall on lake benthic organisms are still being assessed by sediment sampling. The Montana studies reported on snow avalanche models adapted to mudflows, trophic impact of ash deposits on Montana lakes, and the volcanic ash as nutrient subsidy to sub-alpine lakes. The Oregon studies reported herring and smelt egg and larvae damage due to suspended ash. The drainage patterns in eruption debris were studied along with the filling of Columbia River berths with ash.

Flaherty, D.C.

1983-01-01

135

Lightweight composite reflector panels  

NASA Technical Reports Server (NTRS)

The Hexel Corp. has produced additional composite panels, based on JPL designs, that: (1) have increased the panel size from 0.15 to 0.40 meters, (2) have improved the as-manufactured surface precision 3.0 to approx. 1.0 micron RMS, (3) have utilized different numbers of face sheet plys, (4) have improved face sheet fiber orientation, (5) have variations of aluminum honeycomb core cell size, (6) have combined graphite/epoxy (Gr/Ep) face sheets with E-glass honeycomb cores, and (7) have used standard aluminum core with face sheets composed of combinations of glass, Kevlar, and carbon fibers. Additionally, JPL has identified candidate alternate materials for the facesheets and core, modified the baseline polymer panel matrix material, and developed new concepts for panel composite cores. Dornier designed and fabricated three 0.6 meter Gr/Ep panels, that were evaluated by JPL. Results of both the Hexel and Dornier panel work were used to characterize the state-of-the-art for Gr/Ep mirrors.

Freeland, R. E.; Mcelroy, P. M.

1988-01-01

136

Local feedback control of light honeycomb panels.  

PubMed

This paper summarizes theoretical and experimental work on the feedback control of sound radiation from honeycomb panels using piezoceramic actuators. It is motivated by the problem of sound transmission in aircraft, specifically the active control of trim panels. Trim panels are generally honeycomb structures designed to meet the design requirement of low weight and high stiffness. They are resiliently mounted to the fuselage for the passive reduction of noise transmission. Local coupling of the closely spaced sensor and actuator was observed experimentally and modeled using a single degree of freedom system. The effect of the local coupling was to roll off the response between the actuator and sensor at high frequencies, so that a feedback control system can have high gain margins. Unfortunately, only relatively poor global performance is then achieved because of localization of reduction around the actuator. This localization prompts the investigation of a multichannel active control system. Globalized reduction was predicted using a model of 12-channel direct velocity feedback control. The multichannel system, however, does not appear to yield a significant improvement in the performance because of decreased gain margin. PMID:17297778

Hong, Chinsuk; Elliott, Stephen J

2007-01-01

137

Multipurpose panel display device investigation  

Microsoft Academic Search

A multipurpose panel was developed to provide a flexible control and a LED display panel with easily changeable nomenclature for use in applications where panel space is limited, but where a number of similar subsystems must be controlled, or where basic panel nomenclature and functions must be changed rapidly, as in the case of between mission changes of space shuttle

R. Sliwa

1977-01-01

138

38. INTERIOR VIEW OF FOUNDRY SHOWING HEAVY TIMBER ROOF TRUSSES ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

38. INTERIOR VIEW OF FOUNDRY SHOWING HEAVY TIMBER ROOF TRUSSES AND TRAVELING CRANE. - Baltimore & Ohio Railroad, Mount Clare Shops, South side of Pratt Street between Carey & Poppleton Streets, Baltimore, Independent City, MD

139

Mounting and Alignment of IXO Mirror Segments  

NASA Technical Reports Server (NTRS)

A suspension-mounting scheme is developed for the IXO (International X-ray Observatory) mirror segments in which the figure of the mirror segment is preserved in each stage of mounting. The mirror, first fixed on a thermally compatible strongback, is subsequently transported, aligned and transferred onto its mirror housing. In this paper, we shall outline the requirement, approaches, and recent progress of the suspension mount processes.

Chan, Kai-Wing; Zhang, William; Evans, Tyler; McClelland, Ryan; Hong, Melinda; Mazzarella, James; Saha, Timo; Jalota, Lalit; Olsen, Lawrence; Byron, Glenn

2010-01-01

140

Helmet-Mounted Display For Infantry Applications  

NASA Astrophysics Data System (ADS)

A generic sensor/display/soldier interface concept is described for potential application as a helmet or headdress mounted infantry display system. A compact, lightweight infrared camera mounted on a rifle is expected to provide the video image. The objective for the head-mounted display is to increase the soldier's personal safety and functional performance by remotely displaying an image that is generated by a boresighted camera and to reduce eye fatigue.

Kennedy, Andrew J.

1987-04-01

141

Optimization of aircraft interior panels  

NASA Technical Reports Server (NTRS)

Eight different graphite composite panels were fabricated using four different resin matrices. The resin matrices included Hercules 71775, a blend of vinylpolystyrpyridine and bismaleimide, H795, a bismaleimide, Cycom 6162, a phenolic, and PSP 6022M, a polystyrylpyridine. Graphite panels were fabricated using fabric or unidirectional tape. This report describes the processes for preparing these panels and some of their mechanical, thermal and flammability properties. Panel properties are compared with state-of-the-art epoxy fiberglass composite panels.

Kourtides, Demetrius A.; Roper, Willard D.

1986-01-01

142

The concept design of the Cornell Caltech Atacama Telescope mount  

NASA Astrophysics Data System (ADS)

The Cornell Caltech Atacama Telescope (CCAT) is a 25m far infrared telescope in the conceptual design phase. Its primary mirror is composed of a set of panels supported by a space truss. The primary and secondary mirror arrangement resembles the reflector and quadrapod arrangement seen in many radio telescopes, but with shallower primary mirror geometry. In addition, the optical layout calls for a close spacing between the tertiary mirror and the Nasmyth and bent Cassegrain instruments. The mount design is driven by the spacing of the optical elements, the presence of the Nasmyth and bent Cassegrain ports, and the size of the primary mirror truss. This paper examines the mechanical and control system design solutions provided in response to the challenges posed by the optical requirements. These solutions include tradeoffs in structure, drive, and control system design.

Finley, David T.; Reese, Edward O.; Hermann, Kerstan G.; Gienger, Al; Sebring, Thomas A.

2006-06-01

143

Mount Meager landslide flow history  

NASA Astrophysics Data System (ADS)

Gravitational instabilities, such as landslides, avalanches, or debris flows, play a key role in erosional processes and represent one of the major natural hazards in mountainous, coastal, and volcanic regions. Despite the great amount of field, experimental and numerical work devoted to this problem, the understanding of the physical processes at work in gravitational flows is still an open issue, in particular due to the lack of observations relevant to their dynamics. In this context, the seismic signal generated by gravitational flows is a unique opportunity to obtain information on their dynamics. Indeed, as shown recently by Favreau et al., (2010), simulation of the seismic signal generated by landslides makes it possible to discriminate different flow scenarios and estimate rheological parameters. Global and regional seismic networks continuously record gravitational instabilities, so this new method will help gather new data on landslide behavior, particularly when combined with a landslide numerical modeling. Using this approach, we focus on the 6 August 2010 Mount Meager landslide: a 48.5 Mm3 rockslide-debris flow occurring in the Mount Meager Volcanic complex in the Southwest British Columbia. This landslide traveled over 12.7 km in just a few minutes time and was recorded by 25 broadband seismic stations. The time history of the forces exerted by the landslide on the ground surface was inverted from the seismic waveforms. The forcing history revealed the occurrence of a complicated initiation and showed features attributable to flow over a complicated path that included two sharp turns and runup at a valley wall barrier. To reliably interpret this signal and thus obtain detailed information about the dynamics of the landslide, we ran simulations for a range of scenarios by varying the coefficient of friction and the number, mass, and timings of subevents and compute the forces generated in each case. By comparing the results of these simulations to the forces obtained from the seismic data, we are able to reconstruct the event and better understand its dynamics in unprecedented detail.

Moretti, Laurent; Allstadt, Kate; Mangeney, Anne; Yann, capdeville; Eleonore, Stutzmann; Franois, Bouchut

2014-05-01

144

Mount Meager landslide flow history  

NASA Astrophysics Data System (ADS)

Gravitational instabilities, such as landslides, avalanches, or debris flows, play a key role in erosional processes and represent one of the major natural hazards in mountainous, coastal, and volcanic regions. Despite the great amount of field, experimental and numerical work devoted to this problem, the understanding of the physical processes at work in gravitational flows is still an open issue, in particular due to the lack of observations relevant to their dynamics. In this context, the seismic signal generated by gravitational flows is a unique opportunity to obtain information on their dynamics. Indeed, as shown recently by Favreau et al., (2010), simulation of the seismic signal generated by landslides makes it possible to discriminate different flow scenarios and estimate rheological parameters. Global and regional seismic networks continuously record gravitational instabilities, so this new method will help gather new data on landslide behavior, particularly when combined with a landslide numerical modeling. Using this approach, we focus on the 6 August 2010 Mount Meager landslide: a 48.5 Mm3 rockslide-debris flow occurring in the Mount Meager Volcanic complex in the Southwest British Columbia. This landslide traveled over 12.7 km in just a few minutes time and was recorded by 25 broadband seismic stations. The time history of the forces exerted by the landslide on the ground surface was inverted from the seismic waveforms. The forcing history revealed the occurrence of a complicated initiation and showed features attributable to flow over a complicated path that included two sharp turns and runup at a valley wall barrier. To reliably interpret this signal and thus obtain detailed information about the dynamics of the landslide, we ran simulations for a range of scenarios by varying the coefficient of friction and the number, mass, and timings of subevents and compute the forces generated in each case. By comparing the results of these simulations to the forces obtained from the seismic data, we are able to reconstruct the event and better understand its dynamics in unprecedented detail.

Moretti, L.; Allstadt, K.; Mangeney, A.; Capdeville, Y.; Stutzmann, E.; Bouchut, F.

2013-12-01

145

Aerospace safety advisory panel  

NASA Technical Reports Server (NTRS)

The Aerospace Safety Advisory Panel (ASAP) monitored NASA's activities and provided feedback to the NASA Administrator, other NASA officials and Congress throughout the year. Particular attention was paid to the Space Shuttle, its launch processing and planned and potential safety improvements. The Panel monitored Space Shuttle processing at the Kennedy Space Center (KSC) and will continue to follow it as personnel reductions are implemented. There is particular concern that upgrades in hardware, software, and operations with the potential for significant risk reduction not be overlooked due to the extraordinary budget pressures facing the agency. The authorization of all of the Space Shuttle Main Engine (SSME) Block II components portends future Space Shuttle operations at lower risk levels and with greater margins for handling unplanned ascent events. Throughout the year, the Panel attempted to monitor the safety activities related to the Russian involvement in both space and aeronautics programs. This proved difficult as the working relationships between NASA and the Russians were still being defined as the year unfolded. NASA's concern for the unique safety problems inherent in a multi-national endeavor appears appropriate. Actions are underway or contemplated which should be capable of identifying and rectifying problem areas. The balance of this report presents 'Findings and Recommendations' (Section 2), 'Information in Support of Findings and Recommendations' (Section 3) and Appendices describing Panel membership, the NASA response to the March 1994 ASAP report, and a chronology of the panel's activities during the reporting period (Section 4).

1995-01-01

146

Adjustable two-axis instrument mount  

NASA Astrophysics Data System (ADS)

A two-axis adjustable instrument mount having a fixed base plate, an intermediate plate, and an instrument mount plate is disclosed. The intermediate plate is attached to the base plate by a three-point mount in the shape of an isosceles triangle. The two mounting points corresponding to the base of the triangle include hinge flex plates fixed to the base plate by means of rigid stand-offs. The flex plates are also fixed to the edge of the intermediate plate. The third mounting point corresponding to the apex of the triangle has a resilient block between the intermediate plate and the base plate. A threaded fastener passes through the resilient block and secures the intermediate plate to the base plate. Tightening or loosening the threaded fastener causes the resilient block to compress or expand thus allowing adjustment of the angle of the intermediate plate about the axis of the hinge plates with respect to the base plate. The instrument mount plate is similarly attached to the intermediate plate with the axis of the isosceles triangle formed by the three-point mount of the instrument mount plate being rotated 90 degrees from that of the intermediate plate.

Nedderman, William H.

1994-12-01

147

Reduced-Stress Mounting for Thermocouples  

NASA Technical Reports Server (NTRS)

Mounting accommodates widely different coefficients of thermal expansion. In new method, legs of thermocouple placed in separate n- and p-type arrays. Two arrays contact common heat pipe as source but have separate heatpipe sinks. Net expansion (or contraction) taken up by spring mounting on heat-pipe sinks.

Wood, C.

1986-01-01

148

Helmet-Mounted Liquid-Crystal Display  

NASA Technical Reports Server (NTRS)

Helmet-mounted binocular display provides text and images for almost any wearer; does not require fitting for most users. Accommodates users from smallest interpupillary distance to largest. Two liquid-crystal display units mounted in helmet. Images generated seen from any position head can assume inside helmet. Eyes directed to position for best viewing.

Smith, Steve; Plough, Alan; Clarke, Robert; Mclean, William; Fournier, Joseph; Marmolejo, Jose A.

1991-01-01

149

Mental Strategies of Elite Mount Everest Climbers  

Microsoft Academic Search

This study explored the mental strategies used by elite Mount Everest climbers to prepare for and overcome obstacles while climbing the mountain. Individual interviews were carried out with 10 elite climbers who successfully reached the summit of Mount Everest. High altitude climbing differs from many other pursuits because of the constant threat of danger and potential death. Common strategies of

Shaunna Burke; Terry Orlick

150

A flexible cruciform journal bearing mount  

NASA Technical Reports Server (NTRS)

Flexible mount achieves low roll, pitch and yaw stiffnesses while maintaining high radial stiffness by holding bearing pad in fixed relationship to deep web cruciform member and holding this member in fixed relationship to bearing support. This mount has particular application in small, high performance gas turbines.

Frost, A. E.; Geiger, W. A.

1973-01-01

151

Three-point spherical mirror mount  

DOEpatents

A three-point spherical mirror mount for use with lasers is disclosed. The improved mirror mount is adapted to provide a pivot ring having an outer surface with at least three spaced apart mating points to engage an inner spherical surface of a support housing.

Cutburth, Ronald W. (Bulls Gap, TN)

1990-01-01

152

Lucas Patzek Washington State University, Mount Vernon  

E-print Network

- 1 - Lucas Patzek Address: Washington State University, Mount Vernon Department of Crop and Soil), Aug. 2008 ­ Graduating Feb. 2012 Washington State University, Mount Vernon, WA. Major advisor: Dr factors on diverse small grain production systems of Washington State. B.S. in Molecular, Cellular

Patzek, Tadeusz W.

153

Flexible pivot mount eliminates friction and hysteresis  

NASA Technical Reports Server (NTRS)

Flexible steel pivot mount, suspended by flat vertical beryllium copper springs, is capable of rotation, free of hysteresis and starting friction. Mount requires no lubrication, is made in varying sizes, and is driven with either dc torque motor or mechanical linkage.

Highman, C. O.

1970-01-01

154

Advanced solar panel designs  

NASA Technical Reports Server (NTRS)

This paper describes solar cell panel designs that utilize new hgih efficiency solar cells along with lightweight rigid panel technology. The resulting designs push the W/kg and W/sq m parameters to new high levels. These new designs are well suited to meet the demand for higher performance small satellites. This paper reports on progress made on two SBIR Phase 1 contracts. One panel design involved the use of large area (5.5 cm x 6.5 cm) GaAs/Ge solar cells of 19% efficiency combined with a lightweight rigid graphite fiber epoxy isogrid substrate configuration. A coupon (38 cm x 38 cm) was fabricated and tested which demonstrated an array specific power level of 60 W/kg with a potential of reaching 80 W/kg. The second panel design involved the use of newly developed high efficiency (22%) dual junction GaInP2/GaAs/Ge solar cells combined with an advanced lightweight rigid substrate using aluminum honeycomb core with high strength graphite fiber mesh facesheets. A coupon (38 cm x 38 cm) was fabricated and tested which demonstrated an array specific power of 105 W/kg and 230 W/sq m. This paper will address the construction details of the panels and an a analysis of the component weights. A strawman array design suitable for a typical small-sat mission is described for each of the two panel design technologies being studied. Benefits in respect to weight reduction, area reduction, and system cost reduction are analyzed and compared to conventional arrays.

Ralph, E. L.; Linder, E.

1995-01-01

155

SALT mirror mount: a high performance, low cost mount for segmented mirrors  

Microsoft Academic Search

Segmented mirror telescopes take advantage of modular design to achieve large apertures at low cost. This paper describes the segment mount developed for the Southern African Large Telescope. The mount provides passive precision support for the optics, kinematic registration to the primary mirror truss, precision tip-tilt and piston adjustments, and interchangeability between segments and mounts. A trial production run of

Daniel R. Blanco; Gordon Pentland; Edward G. Winrow; Kerry Rebeske; Jian Swiegers; Kobous G. Meiring

2003-01-01

156

Scattering matrices of volcanic ash particles of Mount St. Helens, Redoubt, and Mount Spurr Volcanoes  

E-print Network

Scattering matrices of volcanic ash particles of Mount St. Helens, Redoubt, and Mount Spurr Volcanoes O. Mun~oz,1 H. Volten,2,3 J. W. Hovenier,3 B. Veihelmann,2 W. J. van der Zande,2,4 L. B. F. M: the 18 May 1980 Mount St. Helens eruption, the 1989­1990 Redoubt eruption, and the 18 August and 17

Rose, William I.

157

Panel 3 - characterization  

SciTech Connect

The task of this panel was to identify and prioritize needs in the area of characterization of diamond and diamond-like-carbon (DLC) films for use in the transportation industry. Until recent advances in production of inexpensive films of diamonds and DLC, it was not feasible that these materials could be mass produced. The Characterization Panel is restricting itself to identifying needs in areas that would be most useful to manufacturers and users in producing and utilizing diamond and DLC coatings in industry. These characterization needs include in-situ monitoring during growth, relation of structure to performance, and standards and definitions.

Erck, R.A.; Erdemir, A.; Janghsing Hsieh; Lee, R.H.; Xian Zheng Pan; Deming Shu [Argonne National Lab., IL (United States); Feldman, A. [National Inst. of Standards and Technology, Gaithersburg, MD (United States); Glass, J.T. [North Carolina State Univ., Raleigh (United States); Kleimer, R. [Coors Ceramics Co., Golden, CO (United States); Lawton, E.A. [JPL/Caltech, Pasadena, CA (United States); McHargue, C.J. [Univ. of Tennessee, Knoxville (United States)

1993-01-01

158

Entry Systems Panel deliberations  

NASA Technical Reports Server (NTRS)

The Entry Systems Panel was chaired by Don Rummler, LaRC and Dan Rasky, ARC. As requested, each panel participant prior to the workshop prepared and delivered presentations to: (1) identify technology needs; (2) assess current programs; (3) identify technology gaps; and (4) identify highest payoff areas R&D. Participants presented background on the entry systems R&D efforts and operations experiences for the Space Shuttle Orbiter. These participants represented NASA Centers involved in research (Ames Research Center), development (Johnson Space Center) and operations (Kennedy Space Center) and the Shuttle Orbiter prime contractor. The presentations lead to the discovery of several lessons learned.

Rasky, Daniel J.; Rummler, Donald R.; Bersch, Charlie; Dixon, Sidney C.

1993-01-01

159

A miniaturized pointing mount for Spacelab missions  

NASA Technical Reports Server (NTRS)

A Miniaturized Pointing Mount (MPM) for Spacelab missions is defined and simulation results are described. This mount is proposed to complement the Spacelab Instrument Pointing System (IPS). It uses the same mount isolator concept as the Spacelab IPS but is much more efficient and economical for the accommodation of small shuttle payloads. The MPM is built from star tracker assemblies left over from the Apollo Telescope Mount program thereby assuring low cost and development risk. Simulation results indicate a high level of instrument stability can be expected. The short development time of the MPM would permit it to serve as a precursor to the Spacelab IPS for verifying critical new concepts such as the mount isolation and hold down mechanisms.

Fritz, C. G.; Howell, T., Jr.; Nicaise, P. D.; Parker, J. R.

1975-01-01

160

CFRP panel concept design study for the CCAT  

NASA Astrophysics Data System (ADS)

Under contract from the Cornell-Caltech Atacama Telescope Project (CCAT), Composite Mirror Applications, Inc. (CMA) has undertaken a feasibility design study for the use of Carbon Fiber Reinforced Plastic (CFRP) panels in forming the primary mirror surface. We review some of the past projects using CFRP panel technology for millimeter and submillimeter wavelength radio astronomy telescopes. Pros and cons of the technology are discussed. A particular panel configuration was proposed and computer modeled with finite element analysis (FEA). The technology of replicated CFRP panels for short wavelength radio astronomical telescopes is mature and cost effective. For shorter wavelengths into the IR and visible, it is becoming a very attractive alternative to traditional, heavy glass or metal technologies.

Martin, Robert N.; Romeo, Robert C.; Kingsley, Jeffrey S.

2006-06-01

161

GPS Attitude Determination Using Deployable-Mounted Antennas  

NASA Technical Reports Server (NTRS)

The primary objective of this investigation is to develop a method to solve for spacecraft attitude in the presence of potential incomplete antenna deployment. Most research on the use of the Global Positioning System (GPS) in attitude determination has assumed that the antenna baselines are known to less than 5 centimeters, or one quarter of the GPS signal wavelength. However, if the GPS antennas are mounted on a deployable fixture such as a solar panel, the actual antenna positions will not necessarily be within 5 cm of nominal. Incomplete antenna deployment could cause the baselines to be grossly in error, perhaps by as much as a meter. Overcoming this large uncertainty in order to accurately determine attitude is the focus of this study. To this end, a two-step solution method is proposed. The first step uses a least-squares estimate of the baselines to geometrically calculate the deployment angle errors of the solar panels. For the spacecraft under investigation, the first step determines the baselines to 3-4 cm with 4-8 minutes of data. A Kalman filter is then used to complete the attitude determination process, resulting in typical attitude errors of 0.50.

Osborne, Michael L.; Tolson, Robert H.

1996-01-01

162

Primary succession in Mount Pinatubo  

PubMed Central

Vegetation structure on the east flank of Mount Pinatubo was investigated to determine the inventory of species at 15 y post-eruption, then to ascertain environmental variables that have influenced the early patterns of primary succession. Unconstrained and constrained ordination methods were used to determine the influence of spatial, elevation, and substrate patterns on vegetation. Vegetation was assigned to one of 3 habitat types. Scours were eroded flat surfaces, terraces were perched flat surfaces, and talus piles were created along the canyon edges as mass waste events. The influence of habitat type on vegetation was multifaceted because they represent different conditions and different histories. The talus piles have preferential access to colonists from the vegetation on the canyon walls above and a more benign microclimate than the exposed terrace and scour sites. Scoured sites on the valley floor exhibited the least vegetation cover, as these substrates had the least mature surfaces and the most restricted capacity for root exploration. Perched terraces exhibited greater plant dominance than did the other habitats in the early stages of succession because of the ubiquitous appearance of Parasponia rugosa as initial colonists on these relatively flat surfaces. Polynomial canonical correspondence analysis was more closely aligned with the pattern of vegetation than linear canonical correspondence analysis, and therefore more closely approximated accurate descriptions of correlations among site ordination positions and measured variables. These results confirm that a variety of statistical approaches can clarify applications for restoration ecology following landslide and volcanic disturbances or agriculture and forestry anthropogenic disturbances in the lowland tropics. PMID:24505499

Marler, Thomas E; del Moral, Roger

2013-01-01

163

Panel Organization 1. Panel on Structural Geology & Geoengineering  

E-print Network

Appendix A Panel Organization 1. Panel on Structural Geology & Geoengineering Chair: Dr. Clarence R mines, and storage projects, primarily in the fields of engineering geology and rock mechanics concerning dams, tunnels, and landslides associated with hydroelectric projects. Formerly he worked

164

Detail east panel of east truss showing rollling panels and ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Detail east panel of east truss showing rollling panels and counter weights. View south - New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Lift Bridge, Spanning Fort Point Channel, Boston, Suffolk County, MA

165

78. DETAIL OF COMMUNICATIONS PANEL ON LAUNCH ANALYST PANEL SHOWING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

78. DETAIL OF COMMUNICATIONS PANEL ON LAUNCH ANALYST PANEL SHOWING 20 CHANNEL-SELECTION SWITCHES, ROTARY DIAL, HEADSET, AND FOOT PEDAL - Vandenberg Air Force Base, Space Launch Complex 3, Launch Operations Building, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

166

JALT96 Final Panel.  

ERIC Educational Resources Information Center

The summary papers of the conference on second language teaching include (1) a summary of the concluding panel discussion (Kip Cates, Denis Cunningham, Albert Raasch, Braj Kachru, Carol Rinnert) on the role of languages and the responsibility of language education in lowering cultural barriers, the ethical responsibility of language professionals,

1997

167

Solar cogeneration panels  

Microsoft Academic Search

Photovoltaic panels generate heat as well as electricity and the amount of heat is significantly more than the electrical energy. A project, funded by New York State Research and Development Authority, Natural Resources Canada and Conserval Engineering investigated the method of combining photovoltaic cells with the transpired solar air heater, constructed prototypes, measured the combined electrical and thermal energies produced

J. C. Hollick

1998-01-01

168

ADAM Review Panel Report  

NASA Astrophysics Data System (ADS)

The ADAM Review Panel was constituted by SERC in early 1994 under the Chairmanship of Professor R. Hills (MRAO, Cambridge) and met for the first time in March of that year. Its final report was issued on 16th March 1995 and is reproduced here.

McIlwrath, B. K.

169

Victim Impact Panels  

Microsoft Academic Search

This study examines 103 Victim Impact Panel attendees and 75 comparison group respondents who had been convicted of drunk driving offenses. A pre- and post-test measure developed by the author was administered to both groups to determine offender attitudes about drinking and driving. Results indicate a lower recidivism rate in VIP participants as opposed to comparison group subjects and those

Ginny Sprang

1997-01-01

170

AEROSPACE SAFETY ADVISORY PANEL  

E-print Network

AEROSPACE SAFETY ADVISORY PANEL ANNUAL REPORT FOR 2010 #12;THIS PAGE INTENTIONALLY BLANK #12;NASA.S. Congress and to the Administrator of the National Aeronautics and Space Administration (NASA). ASAP members believe that NASA will face challenges implementing the Nation's space program under the Administration

171

Solar energy collector panel  

Microsoft Academic Search

A solar collector panel including a housing having a solar window therein and which contains a loop of tubing through which a fluid is pumped for heating of the fluid. A heat absorbing porous wicking membrane containing a vaporizable working liquid is positioned within the housing for collecting solar heat and transferring that heat to the fluid within the tubing.

Cutchaw

1975-01-01

172

Solar energy collector panel  

Microsoft Academic Search

A collector panel for thermal energy emanating from the sun comprises a coiled length of tubing arranged in a planar toroid and held in that position by a plurality of radial clamps. The tubing is continuous and carries the fluid to be heated, typically water from a swimming pool or similar container, in a spiral path in the plane of

1977-01-01

173

Solar energy conversion panel  

Microsoft Academic Search

A solar energy conversion panel is provided by means of which solar energy is recovered as converted electrical energy and also thermal energy. An array of solar energy collectors direct solar energy received from the sun upon photovoltaic cells within the collectors. The photovoltaic cells convert a portion of this energy into electrical energy. The balance of the solar energy

1981-01-01

174

Solar energy panel  

Microsoft Academic Search

This patent describes a solar panel. It comprises: a main body portion and a pair of caps in a mating arrangement at the opposite ends of the main body portion. The main body portion comprises an integrated sheet formed from a pair of spaced skins separated by a series of uniformly spaced parallel ribs running the full length of the

1990-01-01

175

Solar energy collector panel  

Microsoft Academic Search

The panel includes two thermally prestressed silicate glass plates with metalized edges to which are solder-sealed lead bars which, in turn, are solder-sealed to a tubular frame. An outer protection frame covers the plate edges. Spacer posts and elements support the plates against pressure upon evacuation. The absorber proper is centrally disposed in the evacuated chamber.

R. Dalstein; H. Greif; H. Nowoczyn; J. Spies; G. Termath; J. Unbescheid

1982-01-01

176

Advanced Solar Panel Designs  

NASA Technical Reports Server (NTRS)

Solar panel designs that utilize new high-efficiency solar cells and lightweight rigid panel technologies are described. The resulting designs increase the specific power (W/kg) achievable in the near-term and are well suited to meet the demands of higher performance small satellites (smallsats). Advanced solar panel designs have been developed and demonstrated on two NASA SBIR contracts at Applied Solar. The first used 19% efficient, large area (5.5 cm x 6.5 cm) GaAs/Ge solar cells with a lightweight rigid graphite epoxy isogrid substrate configuration. A 1,445 sq cm coupon was fabricated and tested to demonstrate 60 W/kg with a high potential of achieving 80 W/kg. The second panel design used new 22% efficiency, dual-junction GaInP2/GaAs/Ge solar cells combined with a lightweight aluminum core/graphite fiber mesh facesheet substrate. A 1,445 sq cm coupon was fabricated and tested to demonstrate 105 W/kg with the potential of achieving 115 W/kg.

Ralph, E. L.; Linder, E. B.

1995-01-01

177

AEROSPACE SAFETY ADVISORY PANEL  

E-print Network

.), Chair January 15, 2014 The Honorable Charles F. Bolden, Jr. Administrator National Aeronautics and SpaceAEROSPACE SAFETY ADVISORY PANEL ANNUAL REPORT FOR 20! 3 #12;. #12;NASA AEROSPACE SAFETY ADVISORY Administration Washington, DC 20546 Dear Mr. Bolden: Pursuant to Section 106(b) of the National Aeronautics

Waliser, Duane E.

178

Stepped inlet optical panel  

DOEpatents

An optical panel includes stacked optical waveguides having stepped inlet facets collectively defining an inlet face for receiving image light, and having beveled outlet faces collectively defining a display screen for displaying the image light channeled through the waveguides by internal reflection.

Veligdan, James T. (6 Stephanie La., Manorville, NY 11949)

2001-01-01

179

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This report covers the activities of the Aerospace Safety Advisory Panel (ASAP) for calendar year 1998-a year of sharp contrasts and significant successes at NASA. The year opened with the announcement of large workforce cutbacks. The slip in the schedule for launching the International Space Station (ISS) created a five-month hiatus in Space Shuttle launches. This slack period ended with the successful and highly publicized launch of the STS-95 mission. As the year closed, ISS assembly began with the successful orbiting and joining of the Functional Cargo Block (FGB), Zarya, from Russia and the Unity Node from the United States. Throughout the year, the Panel maintained its scrutiny of NASA's safety processes. Of particular interest were the potential effects on safety of workforce reductions and the continued transition of functions to the Space Flight Operations Contractor. Attention was also given to the risk management plans of the Aero-Space Technology programs, including the X-33, X-34, and X-38. Overall, the Panel concluded that safety is well served for the present. The picture is not as clear for the future. Cutbacks have limited the depth of talent available. In many cases, technical specialties are 'one deep.' The extended hiring freeze has resulted in an older workforce that will inevitably suffer significant departures from retirements in the near future. The resulting 'brain drain' could represent a future safety risk unless appropriate succession planning is started expeditiously. This and other topics are covered in the section addressing workforce. The major NASA programs are also limited in their ability to plan property for the future. This is of particular concern for the Space Shuttle and ISS because these programs are scheduled to operate well into the next century. In the case of the Space Shuttle, beneficial and mandatory safety and operational upgrades are being delayed because of a lack of sufficient present funding. Likewise, the ISS has little flexibility to begin long lead-time items for upgrades or contingency planning. For example, the section on computer hardware and software contains specific findings related to required longer range safety-related actions. NASA can be proud of its accomplishments this past year, but must remain ever vigilant, particularly as ISS assembly begins to accelerate. The Panel will continue to focus on both the short- and long-term aspects of risk management and safety planning. This task continues to be made manageable and productive by the excellent cooperation the Panel receives from both NASA and its contractors. Particular emphasis will continue to be directed to longer term workforce and program planning issues as well as the immediate risks associated with ISS assembly and the initial flights of the X-33 and X-34. Section 2 of this report presents specific findings and recommendations generated by ASAP activities during 1998. Section 3 contains more detailed information in support of these findings and recommendations. Appendix A is a current roster of Panel members, consultants, and staff. Appendix B contains NASA's response to the findings and recommendations from the 1997 ASAP Annual Report. Appendix C details the fact-finding activities of the Panel in 1998. During the year, Mr. Richard D. Blomberg was elected chair of the Panel and Vice Admiral (VADM) Robert F Dunn was elected deputy chair. VADM Bernard M. Kauderer moved from consultant to member. Mr. Charles J. Donlan retired from the Panel after many years of meritorious service. Ms. Shirley C. McCarty and Mr. Robert L. ('Hoot') Gibson joined the Panel as consultants.

1999-01-01

180

Evaluation of Space Debris Impact on Spacecraft Structure Panels  

NASA Astrophysics Data System (ADS)

Mission-critical components of unmanned spacecraft, such as electronic equipment, are often mounted on the interior surfaces of structure panels. This study investigated debris impact damage to structure panels to assess the degree to which they can protect components. If debris perforates a structure panel but is stopped by the equipment chassis, the impact will not affect the probability of mission success. The ballistic limit of the chassis therefore equals to the damage limit of the structure panel. To estimate this damage limit, hypervelocity impact experiments were conducted on sets of a honeycomb sandwich panel, simulating a structure panel, fixed directly to an aluminum alloy plate, simulating an equipment chassis, with no gap between the two. Debris environment models show that alumina debris particles smaller than 1 mm in diameter are dominant in low earth orbit, and the average impact velocity is over 10 km/sec. However, advanced techniques are required to accelerate small solid projectiles to such speeds, so steel projectiles at 6 km/sec were used to simulate the impact pressure caused by alumina impacting at 9 km/sec. The depths of the resulting impact craters on the chassis plates were measured with an optical microscope, and the damage limit equation of the structure panels was derived from the crater depths. The calculated damage limit equation was compared with the SRL ballistic limit equations. As a result, it was found that the equation obtained in this study showed safety results but was too robust. The stand-off distance between honeycomb sandwich panel and aluminum alloy plate was effective to decrease depths of craters in the plate.

Higashide, Masumi; Onose, Naomi; Hasegawa, Sunao

181

Advanced solar panel designs  

NASA Technical Reports Server (NTRS)

Solar panel designs that utilize new high-efficiency solar cells and lightweight rigid panel technologies are described. The resulting designs increase the specific power (W/kg) achievable in the near-term and are well suited to meet the demands of higher performance small satellites (smallsats). Advanced solar panel designs have been developed and demonstrated on two NASA SBIR contracts at Applied Solar. The first used 19% efficient, large area (5.5 cm x 6.5 cm) GaAs/Ge solar cells with a lightweight rigid graphite epoxy isogrid substrate configuration. A 1,445 cm(exp 2) coupon was fabricated and tested to demonstrate 60 W/kg with a high potential of achieving 80 W/kg. The second panel design used new 22% efficiency, dual junction GaInP2/GaAs/Ge solar cells combined with a lightweight aluminum core/graphite fiber mesh facesheet substrate. A 1,445 cm(exp 2) coupon was fabricated and tested to demonstrate 105 W/kg with the potential of achieving 115 W/kg. This paper will address the construction details for the GaAs/isogrid and dual-junction GaAs/carbon mesh panel configurations. These are ultimately sized to provide 75 Watts and 119 Watts respectively for smallsats or may be used as modular building blocks for larger systems. GaAs/isogrid and dual-junction GaAs/carbon mesh coupons have been fabricated and tested to successfully demonstrate critical performance parameters and results are also provided here.

Ralph, E. L.; Linder, E. B.

1996-01-01

182

Expandable panel and truss system\\/antenna\\/solar panel  

Microsoft Academic Search

Disclosed is an expandable panel and truss structure capable of being stowed in a storage container (canister) for transportation into space and deployed to form structures such as antennas, solar panels or similar space or terrestial structures. The antenna formed comprises the panels stored as hinged pairs (sets) folded in accordian-like fashion together with the expandable trusses and other devices

Slysh

1983-01-01

183

Vibration dissipation mount for motors or the like  

DOEpatents

A vibration dissipation mount which permits the mounting of a motor, generator, or the like such that the rotatable shaft thereof passes through the mount and the mount permits the dissipation of self-induced and otherwise induced vibrations wherein the mount comprises a pair of plates having complementary concave and convex surfaces, a semi-resilient material being disposed therebetween.

Small, Thomas R. (Brookeville, MD)

1987-01-01

184

Cooling fan shroud mounted on an engine vehicle  

Microsoft Academic Search

This patent describes an easily removable cooling fan shroud adapted to be mounted between an engine and a radiator of an engine vehicle, comprising a rigid engine mounting, a rigid radiator mounting, and a flexible member formed as a circular cylindrical bellows normally extending between and connecting the engine mounting and the radiator mounting; wherein the bellows is spaced and

Y. Yamaguchi; T. Yamaguchi; H. Nagata

1988-01-01

185

LCD Panels: The Electronic Wonder.  

ERIC Educational Resources Information Center

Describes Liquid Crystal Display (LCD) panels and their use in the classroom. Topics discussed include active versus passive matrix panels; the number of pixels; projectors, including transmissive or reflective overhead projectors; costs; and vendors that supply LCDs. (LRW)

Anderson, Glenn

1994-01-01

186

Report of Industry Panel Group  

NASA Technical Reports Server (NTRS)

A final report is presented from the industry panel group. The contents include: 1) General comments; 2) Positive progress since Minnowbrook IV; 3) Industry panel outcome; 4) Prioritized turbine projects; 5) Prioritized compressor projects; and 6) Miscellaneous.

Gallimore, Simon; Gier, Jochen; Heitland, Greg; Povinelli, Louis; Sharma, Om; VandeWall, Allen

2006-01-01

187

77 FR 68788 - Neurological Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...Neurological Devices Panel of the Medical Devices Advisory Committee...multilumen device with two balloons mounted near the distal tip...inflation of the individual balloons. The device is placed in the...patients who have failed maximal medical management. Of note,...

2012-11-16

188

77 FR 61768 - Neurological Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...Neurological Devices Panel of the Medical Devices Advisory Committee...multi-lumen device with two balloons mounted near the distal tip...inflation of the individual balloons. The device is placed in the...patients who have failed maximal medical management. Of note,...

2012-10-11

189

Progress made in understanding Mount Rainier's hazards  

USGS Publications Warehouse

At 4392 m high, glacier-clad Mount Rainier dominates the skyline of the southern Puget Sound region and is the centerpiece of Mount Rainier National Park. About 2.5 million people of the greater Seattle-Tacoma metropolitan area can see Mount Rainier on clear days, and 150,000 live in areas swept by lahars and floods that emanated from the volcano during the last 6,000 years (Figure 1). These lahars include the voluminous Osceola Mudflow that floors the lowlands south of Seattle and east of Tacoma, and which was generated by massive volcano flank-collapse. Mount Rainier's last eruption was a light dusting of ash in 1894; minor pumice last erupted between 1820 and 1854; and the most recent large eruptions we know of were about 1100 and 2300 years ago, according to reports from the U.S. Geological Survey.

Sisson, T.W.; Vallance, J.W.; Pringle, P.T.

2001-01-01

190

Mount St. Helens: Before and After  

NSDL National Science Digital Library

This multimedia resource produced for Teachers' Domain chronicles the 1980 volcanic eruption of Mount St. Helens. Featured are still images of the devastation, video of the eruption plume, and before-and-after satellite images of the affected region.

Foundation, Wgbh E.

2005-12-17

191

X-band slotted array test panel and test fixture  

NASA Technical Reports Server (NTRS)

Data from the development of the X-band slotted array test band, X-band array test fixture, and the X/L-band test fixture for the Support Instrumentation Requirements program are documented. An X-band array was built and installed with an existing L-band module in such a way as to permit antenna pattern measurements in a series of nonplanar configurations that might simulate the thermal effects of nonuniform solar illumination on the array in a space environment. This was accomplished with eight X-band subpanels mounted adjacently on individually adjusted supports which were then co-mounted to a larger frame which served to mount and physically distort the existing L-band module. The L-band module is a heavy electrical breadboard array section that was fabricated to demonstrate the performance capabilities of a slotted waveguide array at L-band frequencies. Drawings, mechanical analysis, and descriptions of test configurations are presented.

1979-01-01

192

7 CFR 1940.968 - Rural Economic Development Review Panel Grant (Panel Grant).  

Code of Federal Regulations, 2010 CFR

...2009-01-01 true Rural Economic Development Review Panel Grant (Panel...Programs 1940.968 Rural Economic Development Review Panel Grant (Panel...associated with a State rural economic development review panel. (b)...

2010-01-01

193

Payload advisory panel recommendations  

NASA Technical Reports Server (NTRS)

The Payload Advisory Panel proposes a restructured Earth Observing System (EOS) mission to address high-priority science and environmental policy issues in Earth System Science. These issues have been identified through studies conducted by the Intergovernmental Panel on Climate Change (IPCC), the United States Environmental Protection Agency (EPA), and the Committee on Earth and Environmental Sciences (CEES). The restructured EOS defers efforts to improve the understanding of the middle and upper stratosphere and solid earth geophysics. The strategy of the mission combines high priority new measurements with continuation of critical data sets begun by missions which precede EOS. Collaborative arrangements with international partners are an essential part of the program and additional arrangements are posed. The need for continuity in Earth observations and the urgency of environmental questions require launch of some EOS elements as soon as possible. They further require maintenance of the EOS objective of obtaining consistent 15-year measurement records.

Moore, Berrien, III

1991-01-01

194

Mount Rainier: living with perilous beauty  

USGS Publications Warehouse

Mount Rainier is an active volcano reaching more than 2.7 miles (14,410 feet) above sea level. Its majestic edifice looms over expanding suburbs in the valleys that lead to nearby Puget Sound. USGS research over the last several decades indicates that Mount Rainier has been the source of many volcanic mudflows (lahars) that buried areas now densely populated. Now the USGS is working cooperatively with local communities to help people live more safely with the volcano.

Scott, Kevin M.; Wolfe, Edward W.; Driedger, Carolyn L.

1998-01-01

195

Transonic panel flutter  

Microsoft Academic Search

FEM is here used to ascertain the stability and aeroelastic response of thin, 2D panels subjected to Mach 0.8-2.5 flows. In the absence of shocks, it is found that the Euler equations used to represent the unsteady flowfield dynamics predict response behaviors resembling those obtained via potential flow methods. Where shocks do play a significant role in the overall motion

Gary A. Davis; Oddvar O. Bendiksen

1993-01-01

196

Solar energy panel  

Microsoft Academic Search

A light-weight, low-cost and high efficiency solar panel includes a light-weight rectangular wood frame which surrounds and houses a copper absorber plate. A pair of spaced glazings, formed from plastic film materials, are disposed above the absorber to define a pair of enclosed air spaces. The lower glazing is capable of withstanding high temperatures and the upper glazing material is

Hyman

1980-01-01

197

Panel 4 LGBT Families  

Microsoft Academic Search

Melissa Murray, Professor of Law, Berkeley Law\\u000aNancy Polikoff, Professor of Law, American University Washington College of Law; McDonald\\/Wright Visiting Chair of Law and Faculty Chair, The Williams Institute, UCLA School of Law\\u000aCourtney Joslin, Acting Professor of Law, UC Davis School of Law\\u000aModerator: Jennifer Rothman, Professor of Law and Joseph Scott Fellow, Loyola Law School\\u000aVideo of Panel

Jennifer Rothman; Melissa Murray; Nancy Polikoff; Courtney Joslin

2011-01-01

198

National Reading Panel  

NSDL National Science Digital Library

On April 13, 2000, the National Reading Panel (NRP) released the results of "the largest, most comprehensive evidenced-based review ever conducted of research on how children learn reading." Established in response to a 1997 congressional directive, the NRP is composed of "leading scientists in reading research, representatives of colleges of education, reading teachers, educational administrators, and parents." The NRP Homepage offers background information, additional documents, and related links.

199

Lightweight, Thermally Insulating Structural Panels  

NASA Technical Reports Server (NTRS)

Lightweight, thermally insulating panels that also serve as structural members developed. Honeycomb-core panel filled with low-thermal-conductivity, opacified silica aerogel preventing convection and minimizes internal radiation. Copper coating on face sheets reduces radiation. Overall thermal conductivities of panels smaller than state-of-art commercial non-structurally-supporting foam and fibrous insulations. On Earth, panels suitable for use in low-air-pressure environments in which lightweight, compact, structurally supporting insulation needed; for example, aboard high-altitude aircraft or in partially evacuated panels in refrigerators.

Eisen, Howard J.; Hickey, Gregory; Wen, Liang-Chi; Layman, William E.; Rainen, Richard A.; Birur, Gajanana C.

1996-01-01

200

Large thermal protection system panel  

NASA Technical Reports Server (NTRS)

A protective panel for a reusable launch vehicle provides enhanced moisture protection, simplified maintenance, and increased temperature resistance. The protective panel includes an outer ceramic matrix composite (CMC) panel, and an insulative bag assembly coupled to the outer CMC panel for isolating the launch vehicle from elevated temperatures and moisture. A standoff attachment system attaches the outer CMC panel and the bag assembly to the primary structure of the launch vehicle. The insulative bag assembly includes a foil bag having a first opening shrink fitted to the outer CMC panel such that the first opening and the outer CMC panel form a water tight seal at temperatures below a desired temperature threshold. Fibrous insulation is contained within the foil bag for protecting the launch vehicle from elevated temperatures. The insulative bag assembly further includes a back panel coupled to a second opening of the foil bag such that the fibrous insulation is encapsulated by the back panel, the foil bag, and the outer CMC panel. The use of a CMC material for the outer panel in conjunction with the insulative bag assembly eliminates the need for waterproofing processes, and ultimately allows for more efficient reentry profiles.

Myers, Franklin K. (Inventor); Weinberg, David J. (Inventor); Tran, Tu T. (Inventor)

2003-01-01

201

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This Annual Report of the Aerospace Safety Advisory Panel (ASAP) presents results of activities during calendar year 2001. The year was marked by significant achievements in the Space Shuttle and International Space Station (ISS) programs and encouraging accomplishments by the Aerospace Technology Enterprise. Unfortunately, there were also disquieting mishaps with the X-43, a LearJet, and a wind tunnel. Each mishap was analyzed in an orderly process to ascertain causes and derive lessons learned. Both these accomplishments and the responses to the mishaps led the Panel to conclude that safety and risk management is currently being well served within NASA. NASA's operations evidence high levels of safety consciousness and sincere efforts to place safety foremost. Nevertheless, the Panel's safety concerns have never been greater. This dichotomy has arisen because the focus of most NASA programs has been directed toward program survival rather than effective life cycle planning. Last year's Annual Report focused on the need for NASA to adopt a realistically long planning horizon for the aging Space Shuttle so that safety would not erode. NASA's response to the report concurred with this finding. Nevertheless, there has been a greater emphasis on current operations to the apparent detriment of long-term planning. Budget cutbacks and shifts in priorities have severely limited the resources available to the Space Shuttle and ISS for application to risk-reduction and life-extension efforts. As a result, funds originally intended for long-term safety-related activities have been used for operations. Thus, while safety continues to be well served at present, the basis for future safety has eroded. Section II of this report develops this theme in more detail and presents several important, overarching findings and recommendations that apply to many if not all of NASA's programs. Section III of the report presents other significant findings, recommendations and supporting material applicable to specific program areas. Appendix A presents a list of Panel members. Appendix B contains the reaction of the ASAP to NASA's response to the calendar year 2000 findings and recommendations. In accordance with a practice started last year, this Appendix includes brief narratives as well as classifications of the responses as 'open,' 'closed,' or 'continuing.' Appendix C details the Panel's activities during the reporting period.

2002-01-01

202

An innovative deployable solar panel system for Cubesats  

NASA Astrophysics Data System (ADS)

One of the main Cubesat bus limitations is the available on-board power. The maximum power obtained using body mounted solar panels and advanced triple junction solar cells on a triple unit Cubesat is typically less than 10 W. The Cubesat performance and the mission scenario opened to these small satellite systems could be greatly enhanced by an increase of the available power. This paper describes the design and realization of a modular deployable solar panel system for Cubesats, consisting of a modular hinge and spring system that can be potentially used on-board single (1U), double(2U), triple (3U) and six units (6U) Cubesats. The size of each solar panels is the size of a lateral Cubesat surface. The system developed is the basis for a SADA (Solar Array Drive Assembly), in which a maneuvering capability is added to the deployed solar array in order to follow the apparent motion of the sun. The system design trade-off is discussed, comparing different deployment concepts and architectures, leading to the final selection for the modular design. A prototype of the system has been realized for a 3U Cubesat, consisting of two deployable solar panel systems, made of three solar panels each, for a total of six deployed solar panels. The deployment system is based on a plastic fiber wire and thermal cutters, guaranteeing a suitable level of reliability. A test-bed for the solar panel deployment testing has been developed, supporting the solar array during deployment reproducing the dynamical situation in orbit. The results of the deployment system testing are discussed, including the design and realization of the test-bed, the mechanical stress given to the solar cells by the deployment accelerations and the overall system performance. The maximum power delivered by the system is about 50.4 W BOL, greatly enhancing the present Cubesat solar array performance.

Santoni, Fabio; Piergentili, Fabrizio; Donati, Serena; Perelli, Massimo; Negri, Andrea; Marino, Michele

2014-02-01

203

Measurement of charge of heavy ions in emulsion using a CCD camera  

Microsoft Academic Search

A system has been developed for semi-automated determination of the charges of heavy ions recorded in nuclear emulsions. The profiles of various heavy ion tracks in emulsion, both accelerator beam ions and fragments of heavy projectiles, were obtained with a CCD camera mounted on a microscope. The dependence of track profiles on illumination, emulsion grain size and density, background in

D. Kudzia; M. L. Cherry; P. Deines-Jones; R. Holynski; A. Olszewski; B. S. Nilsen; K. Sengupta; M. Szarska; A. Trzupek; C. J. Waddington; J. P. Wefel; B. Wilczynska; H. Wilczynski; W. Wolter; B. Wosiek; K. Wozniak

1999-01-01

204

Analysis and test of superplastically formed titanium hat-stiffened panels under compression  

NASA Technical Reports Server (NTRS)

Four hat-stiffened titanium panels with two different stiffener configurations were fabricated by superplastic forming/weld brazing and tested under a moderately heavy compressive load. The panels had the same overall dimensions but differed in the shape of the hat-stiffener webs; three panels had stiffeners with flat webs and the other panel had stiffeners with beaded webs. Analysis indicated that the local buckling strain of the flat stiffener web was considerably lower than the general panel buckling strain or cap buckling strain. The analysis also showed that beading the webs of the hat stiffeners removed them as the critical element for local buckling and improved the buckling strain of the panels. The analytical extensional stiffness and failure loads compared very well with experimental results.

Davis, Randall C.; Royster, Dick M.; Bales, Thomas T.

1987-01-01

205

Improvement of Pattern Circularity of Panel Antennas Mounted on Large Towers  

Microsoft Academic Search

Three techniques using partial skew are developed in this paper. They do not lead to the same degree of smoothing of the patterns of circular arrays as the 90 skew, but they present the advantage of being less sensitive to the presence of the supporting structure. They also provide a large flexibility in the choice of dimensions and feeding systems

Jose Perini

1968-01-01

206

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This report covers the activities of the Aerospace Safety Advisory Panel (ASAP) for calendar year 1998-a year of sharp contrasts and significant successes at NASA. The year opened with the announcement of large workforce cutbacks. The slip in the schedule for launching the International Space Station (ISS) created a 5-month hiatus in Space Shuttle launches. This slack period ended with the successful and highly publicized launch of the STS-95 mission. As the year closed, ISS assembly began with the successful orbiting and joining of the Functional Cargo Block (FGB), Zarya, from Russia and the Unity Node from the United States. Throughout the year, the Panel maintained its scrutiny of NASAs safety processes. Of particular interest were the potential effects on safety of workforce reductions and the continued transition of functions to the Space Flight Operations Contractor. Attention was also given to the risk management plans of the Aero-Space Technology programs, including the X-33, X-34, and X-38. Overall, the Panel concluded that safety is well served for the present. The picture is not as clear for the future. Cutbacks have limited the depth of talent available. In many cases, technical specialties are "one deep." The extended hiring freeze has resulted in an older workforce that will inevitably suffer significant departures from retirements in the near future. The resulting "brain drain" could represent a future safety risk unless appropriate succession planning is started expeditiously. This and other topics are covered in the section addressing workforce. In the case of the Space Shuttle, beneficial and mandatory safety and operational upgrades are being delayed because of a lack of sufficient present funding. Likewise, the ISS has little flexibility to begin long lead-time items for upgrades or contingency planning.

1999-01-01

207

Modal analysis of gear housing and mounts  

NASA Technical Reports Server (NTRS)

Dynamic finite element analysis of a real gear housing is presented. The analysis was conducted for the housing without the rotating components (gears, shafts, and bearings). Both rigid and flexible mounting conditions for the gear housing are considered in this analysis. The flexible support simulates the realistic mounting condition on a rotorcraft, and the rigid one is analyzed for comparison purposes. The effect of gear housing stiffeners is also evaluated. The results indicate that the first six natural modes of the flexibly mounted gear housing in the 0 to 200 Hz range correspond to the translational and rotational rigid body vibration modes of the housing. Above this range, the housing plate elastic modes begin to occur. In the case of the rigid mount, only the housing plate elastic modes are observed which are verified by modal analysis experiments. Parametric studies show that the housing plate stiffeners and rigid mounts tend to increase most of the natural frequencies, the lower ones being affected the most.

Lim, Teik C.; Singh, RAJ.; Zakrajsek, James J.

1989-01-01

208

Composite Sandwich Panels  

NSDL National Science Digital Library

This module, created by Brian D. Finn of the University of Washington, "investigates the fundamental aspects of designing composite sandwich panels." These boards are commonly used to create surfboards, wake boards, and corrugated cardboard. They are also heavily implemented in the aerospace industry; this includes items such as wing flaps, aircraft floors and overhead storage bins. The module features an abstract, objective, curriculum overview, procedures, mathematical calculations and references. In the end, students will learn to build, test and analyze the strength of these composite materials.

Finn, Brian

2009-09-30

209

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This report presents the results of the Aerospace Safety Advisory Panel (ASAP) activities during 2002. The format of the report has been modified to capture a long-term perspective. Section II is new and highlights the Panel's view of NASA's safety progress during the year. Section III contains the pivotal safety issues facing NASA in the coming year. Section IV includes the program area findings and recommendations. The Panel has been asked by the Administrator to perform several special studies this year, and the resulting white papers appear in Appendix C. The year has been filled with significant achievements for NASA in both successful Space Shuttle operations and International Space Station (ISS) construction. Throughout the year, safety has been first and foremost in spite of many changes throughout the Agency. The relocation of the Orbiter Major Modifications (OMMs) from California to Kennedy Space Center (KSC) appears very successful. The transition of responsibilities for program management of the Space Shuttle and ISS programs from Johnson Space Center (JSC) to NASA Headquarters went smoothly. The decision to extend the life of the Space Shuttle as the primary NASA vehicle for access to space is viewed by the Panel as a prudent one. With the appropriate investments in safety improvements, in maintenance, in preserving appropriate inventories of spare parts, and in infrastructure, the Space Shuttle can provide safe and reliable support for the ISS for the foreseeable future. Indications of an aging Space Shuttle fleet occurred on more than one occasion this year. Several flaws went undetected in the early prelaunch tests and inspections. In all but one case, the problems were found prior to launch. These incidents were all handled properly and with safety as the guiding principle. Indeed, launches were postponed until the problems were fully understood and mitigating action could be taken. These incidents do, however, indicate the need to analyze the Space Shuttle certification criteria closely. Based on this analysis, NASA can determine the need to receritfy the vehicles and to incorporate more stringent inspections throughout the process to minimize launch schedule impact. A highly skilled and experience workforce will be increasingly important for safe and reliable operations as the Space Shuttle vehicles and infrastructure continue to age.

2002-01-01

210

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

The results of the Panel's activities are presented in a set of findings and recommendations. Highlighted here are both improvements in NASA's safety and reliability activities and specific areas where additional gains might be realized. One area of particular concern involves the curtailment or elimination of Space Shuttle safety and reliability enhancements. Several findings and recommendations address this area of concern, reflecting the opinion that safety and reliability enhancements are essential to the continued successful operation of the Space Shuttle. It is recommended that a comprehensive and continuing program of safety and reliability improvements in all areas of Space Shuttle hardware/software be considered an inherent component of ongoing Space Shuttle operations.

1992-01-01

211

The "Virtual" Panel: A Computerized Model for LGBT Speaker Panels  

PubMed Central

Recent societal trends indicate more tolerance for homosexuality, but prejudice remains on college campuses. Speaker panels are commonly used in classrooms as a way to educate students about sexual diversity and decrease negative attitudes toward sexual diversity. The advent of computer delivered instruction presents a unique opportunity to broaden the impact of traditional speaker panels. The current investigation examined the influence of an interactive virtual gay and lesbian speaker panel on cognitive, affective, and behavioral homonegativity. Findings suggest the computer-administered panel is lowers homonegativity, particularly for affective experiential homonegativity. The implications of these findings for research and practice are discussed. PMID:23646036

Beasley, Christopher; Torres-Harding, Susan; Pedersen, Paula J.

2012-01-01

212

Mounting system for optical frequency reference cavities  

NASA Technical Reports Server (NTRS)

A technique for reducing the vibration sensitivity of laser-stabilizing optical reference cavities is based upon an improved design and mounting method for the cavity, wherein the cavity is mounted vertically. It is suspended at one plane, around the spacer cylinder, equidistant from the mirror ends of the cavity. The suspension element is a collar of an extremely low thermal expansion coefficient material, which surrounds the spacer cylinder and contacts it uniformly. Once the collar has been properly located, it is cemented in place so that the spacer cylinder is uniformly supported and does not have to be squeezed at all. The collar also includes a number of cavities partially bored into its lower flat surface, around the axial bore. These cavities are support points, into which mounting base pins will be inserted. Hence the collar is supported at a minimum of three points.

Notcutt, Mark (Inventor); Hall, John L. (Inventor); Ma, Long-Sheng (Inventor)

2008-01-01

213

Taking the Heat: Handling the Shuttle's RCC Wing Panels  

NASA Technical Reports Server (NTRS)

Innovative inspection technology was developed to inspect the Reinforced Carbon-Carbon (RCC) wing panels on the vehicle, thus eliminating need to remove/reinstall all 44 RCC panels for inspections per processing flow. Manually holding inspection tools up to the RCC panels was a 3-person job with high risk of personnel injury and flight hardware damage. To further enhance ergonomics, reduce personnel/flight hardware risks, and improve repeatability, an inspection cart and fixture were constructed to physically secure the instruments for Inspectors during 652 inspection points per flow. The electric lift used to handle RCCs was also utilized to raise the heavy, bulky inspection equipment up to the wing leading edge.

Stegles, Katrine S.

2008-01-01

214

Microgap flat panel display  

DOEpatents

A microgap flat panel display is disclosed which includes a thin gas-filled display tube that utilizes switched X-Y ``pixel`` strips to trigger electron avalanches and activate a phosphor at a given location on a display screen. The panel utilizes the principal of electron multiplication in a gas subjected to a high electric field to provide sufficient electron current to activate standard luminescent phosphors located on an anode. The X-Y conductive strips of a few micron widths may for example, be deposited on opposite sides of a thin insulating substrate, or on one side of the adjacent substrates and function as a cathode. The X-Y strips are separated from the anode by a gap filled with a suitable gas. Electrical bias is selectively switched onto X and Y strips to activate a ``pixel`` in the region where these strips overlap. A small amount of a long-lived radioisotope is used to initiate an electron avalanche in the overlap region when bias is applied. The avalanche travels through the gas filled gap and activates a luminescent phosphor of a selected color. The bias is adjusted to give a proportional electron multiplication to control brightness for given pixel. 6 figs.

Wuest, C.R.

1998-12-08

215

Heat Pipe Thermal Conditioning Panel  

NASA Technical Reports Server (NTRS)

The technology involved in designing and fabricating a heat pipe thermal conditioning panel to satisfy a broad range of thermal control system requirements on NASA spacecraft is discussed. The design specifications were developed for a 30 by 30 inch heat pipe panel. The fundamental constraint was a maximum of 15 gradient from source to sink at 300 watts input and a flux density of 2 watts per square inch. The results of the performance tests conducted on the panel are analyzed.

Saaski, E. W.

1973-01-01

216

Reports from Science Mount St. Helens  

NASA Technical Reports Server (NTRS)

The following reports describe extensive measurements of the properties of the gases and aerosols (particles) in the volcanic clouds produced by the eruptions of Mount St. Helens from March through August 1980. Volcanic material was first injected into the atmosphere on 27 March 1980. This material, as well as that introduced by subsequent eruptions during the next 2 months, was confined to the troposphere. On 18 May the first of several major explosions occurred in which some of the volcanic cloud penetrated well into the stratosphere. The nature of the volcanic activity at Mount St. Helens from the end of March through June was described.

Pollack, James B.

1981-01-01

217

Space deployable domed solar concentrator with foldable panels and hinge therefor  

NASA Technical Reports Server (NTRS)

A space deployable solar energy concentrator is formed of a dome-shaped arrangement of compactly stowable flat panel segments mounted on a collapsible, space-deployable support structure of interconnected linear components. The support structure is comprised of a plurality of tensioned, curvilinear edge strips which extend in a radial direction from a prescribed vertex of a surrounding umbrella-like framework of radially extending rib members. Between a respective pair of radially-extending, curvilinear edge strips an individual wedge-shaped panel section is formed of a plurality of multi-segment lens panel strips each of which is supported in tension between the pair of edge strips by a pair of circumferentially extending catenary cord members connected to a pair of ribs of the surrounding umbrella-like framework. A respective lens panel strip is comprised of a plurality of flat, generally rectangular-shaped, energy-directing panels arranged side-by-side in the circumferential direction of the dome. Adjacent panels are interconnected by flexible U-shaped hinges which overlap opposing edges of adjacent panels and engage respective cylindrically-shaped, load distribution bars that slide within the flexible hinges. Because each U-shaped hinge is flexible, it is permitted to shift in the circumferential direction of the panel section to facilitate stowage and deployment of the dome.

Grayson, Fred G. (Inventor); Miller, Warren H. (Inventor); Sturgis, James D. (Inventor)

1989-01-01

218

137. POWER PANEL A (208 VOLTS) AND POWER PANEL B ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

137. POWER PANEL A (208 VOLTS) AND POWER PANEL B (480 VOLTS) ON EAST WALL OF TRANSFORMER ROOM (212), LSB (BLDG. 751) - Vandenberg Air Force Base, Space Launch Complex 3, Launch Pad 3 East, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

219

Optics Alignment Panel  

NASA Technical Reports Server (NTRS)

The Optics Alignment Panel (OAP) was commissioned by the HST Science Working Group to determine the optimum alignment of the OTA optics. The goal was to find the position of the secondary mirror (SM) for which there is no coma or astigmatism in the camera images due to misaligned optics, either tilt or decenter. The despace position was reviewed of the SM and the optimum focus was sought. The results of these efforts are as follows: (1) the best estimate of the aligned position of the SM in the notation of HDOS is (DZ,DY,TZ,TY) = (+248 microns, +8 microns, +53 arcsec, -79 arcsec), and (2) the best focus, defined to be that despace which maximizes the fractional energy at 486 nm in a 0.1 arcsec radius of a stellar image, is 12.2 mm beyond paraxial focus. The data leading to these conclusions, and the estimated uncertainties in the final results, are presented.

Schroeder, Daniel J.

1992-01-01

220

Planar electroluminescent panel techniques  

NASA Technical Reports Server (NTRS)

Investigations of planar electroluminescent multipurpose displays with latch-in memory are described. An 18 x 24 in. flat, thin address panel with elements spacing of 0.100 in. was constructed which demonstrated essentially uniform luminosity of 3-5 foot lamberts for each of its 43200 EL cells. A working model of a 4-bit EL-PC (electroluminescent photoconductive) electrooptical decoder was made which demonstrated the feasibility of this concept. A single-diagram electroluminescent display device with photoconductive-electroluminescent latch-in memory was constructed which demonstrated the conceptual soundness of this principle. Attempts to combine these principles in a single PEL multipurpose display with latch-in memory were unsuccessful and were judged to exceed the state-of-the-art for close-packed (0.10 in. centers) photoconductor-electroluminescent cell assembly.

Kerr, C.; Kell, R. E.

1973-01-01

221

Introduction to the panel  

NASA Astrophysics Data System (ADS)

The way the last part of this seminar was structured was originally as a panel. And based on your survey results that you're all going to turn in when you leave, we tried to estimate what are the areas that you really want to know more about. And they change. Two years ago, Rich Bravman from Symbol Technologies came and he was one of the top ranked people for the day as far as the interest level, the way the material was presented. And we watched that market carefully. When you start to see laser diode based bar code scanners in the market, we decided that was a good time to come back. ESI is a phenomenal success in the diode pumped YAG market in electronics. Just unbelievable success with a brand new product, hit the market at exactly the right time for memory repair, and thirdly there's a lot of concern about the cost of laser diodes.

Forrest, Gary T.

1990-05-01

222

49 CFR 587.19 - Mounting.  

Code of Federal Regulations, 2010 CFR

...by means of ten bolts, five in the top mounting flange and five in the bottom, such that the bottom of the bumper element honeycomb is 200 mm (7.8 in) 15 mm (0.6 in) from the ground. These bolts are at least 8 mm (0.3 in) in...

2010-10-01

223

Modular plants2. Barge-mounted plants  

Microsoft Academic Search

Barge-mounted plants built at shipyards and towed to a final site by sea or river, or transported dry on a dockship have several advantages over land-built plants, including lesser costs, particularly when sited in developing countries, ease of delivery, and flexible adaptation to production needs, such as changes of site to be near raw materials. Installation at the operating site

Charpentier

1979-01-01

224

Mount Everest as seen from STS-58  

NASA Technical Reports Server (NTRS)

The best, nearly cloud-free Shuttle view yet of Mount Everest, the highest mountain in the world at 29,028 feet. The peak, on the border between Nepal and China, is almost exactly in the center of the photograph. The challenging North Face is in shadow; valley glaciers radiate in all directions from the central massif.

1993-01-01

225

A personality profile of Mount Everest climbers  

Microsoft Academic Search

The Eysenck Personality Questionnaire-Revised was administered to a group of climbers (N=39) who were attempting to summit Mount Everest. The personality profiles for these climbers were characterized by higher scores on the Extraversion (sociability) and Psychoticism (toughmindedness) scales and lower scores on the Neuroticism (anxiety) scales than for the normative sample. This profile is consistent with the pattern typically observed

Sean Egan; Robert M Stelmack

2003-01-01

226

Matrix mounting means for gas burners  

Microsoft Academic Search

Slyman Manufacturing Corp.'s modified infrared burner confines the heat to the surface of the burner (in order to protect the burner mounting from combustion) while maintaining infrared generation throughout the entire area of the burner face. The burner face comprises a matrix of fibrous refractory material positioned at the open side of a plenum through which the fuel is supplied

R. S. Bratko; W. Zwipf

1980-01-01

227

Optimisation for surface mount placement machines  

Microsoft Academic Search

Optimisation of feeder setup and component placement sequence are very important to the efficiency of surface mount placement machines. Much works have been conducted to solve this problem. However, the technological characteristics of the placement machine influences the nature of the planning problems to be solved and the formulation of the associated models. As a result, little consensus exists as

Masri Ayob; Peter Cowling; Graham Kendall

2002-01-01

228

Mount St. Helens, May 18, 1980  

NSDL National Science Digital Library

This GIF image is part of the U.S. Geological Survey's Cascades Volcano Observatory website, which includes pictures (archived and real-time), written reports, seismic data, and other materials on volcanology, including a glossary and links to other relevant sites. These images show Mount St. Helens while it was erupting on May 18th, 1980.

229

Bearing-Mounting Concept Accommodates Thermal Expansion  

NASA Technical Reports Server (NTRS)

Pins or splines allow radial expansion without slippage. Design concept for mounting rotary bearing accommodates differential thermal expansion between bearing and any structure(s) to which bearing connected. Prevents buildup of thermal stresses by allowing thermal expansion to occur freely but accommodating expansion in such way not to introduce looseness. Pin-in-slot configuration also maintains concentricity.

Nespodzany, Robert; Davis, Toren S.

1995-01-01

230

Potential climate impact of Mount Pinatubo eruption  

Microsoft Academic Search

We use the GISS global climate model to make a preliminary estimate of Mount Pinatubo's climate impact. Assuming the aerosol optical depth is nearly twice as great as for the 1982 El Chichon eruption, the model forecasts a dramatic but temporary break in recent global warming trends. The simulations indicate that Pinatubo occurred too late in the year to prevent

James Hansen; Andrew Lacis; Reto Ruedy; Makiko Sato

1992-01-01

231

Fixture for mounting small parts for processing  

DOEpatents

A fixture for mounting small parts, such as fusion target spheres or microelectronic components. A glass stalk is drawn and truncated near its tip. The truncated end of the glass stalk is dipped into silicone rubber forming an extending streamer. After the rubber cures for approximately 24 hours, a small part is touched to the streamer, and will be held securely throughout processing.

Foreman, Larry R. (2456 36th St., Los Alamos, NM 87544); Gomez, Veronica M. (Rte. 5 Box 283, Santa Fe, NM 87501); Thomas, Michael H. (Rte. 3-193-1, Espanola, NM 87532)

1990-01-01

232

TAIL-MOUNTED RADIO TRANSMITTERS FOR WATERFOWL  

Microsoft Academic Search

We successfully tested tail-mounted radio transmitters on Pink-footed Geese (Anser brachyrhynchus), Barnacle Geese (Branta leucopsis), Brant (Branta bernicla) and Eur- asian Wigeon (Anas penelope). The range of detection of the transmitters was approximately 1 km and some birds were tracked for up to 4 mo. Movements and activity of the birds were not affected by the packages. We conclude that

JEAN-FRANCOIS GIROUX; DAVID V. BELL; STEVE PERCIVAL; RON W. SUMMERS

233

Vibration mounts for noise and vibration control  

SciTech Connect

Isolating noise and vibration is of major importance in engine applications whether on board ship or land. Ulstein Bergen, for instance, has virtually standardized on Metalastik D Series mounts for its range of lean-burn, gas engines used in power generation and cogeneration plants. In the largest engine installations, the Metalastik suspension system can carry as much as 47 tons, total weight. The system is designed to isolate the forces generated by a three megawatt engine able to develop full power within 10 seconds of starting. In setups of this size, as many as 24 mounts are arranged underneath the baseplate of the power unit. Metalastik recently announced an entirely new and innovative mounting for marine applications. The new Cushymount K mounting incorporates four separate rubber/metal spring elements housed between top and bottom iron castings. The design combines three-way control of engine movement with relatively large deflection in the rubber. The new design is claimed to be robust and easy to install by means of four bolt holes on the top and bottom castings. Other recommended applications include compressors, exhaust gas silencers, refrigeration/air-conditioning plant and similar ancillary equipment. 2 figs.

Mullins, P.

1995-04-01

234

Helmet-mounted smart array antenna  

Microsoft Academic Search

With the advent of wireless telecommunications, efforts to develop personnel-carried personal communications equipment are being very vigorously pursued. For the personal antenna needed in this application, the area around the skull is a prime location and the future of a head-mount antenna has been envisioned. For firefighters, forest rangers, border patrols, and military personnel, the helmet provides a natural platform

J. J. H. Wang; J. K. Tillery; K. E. Bohannan; G. T. Thompson

1997-01-01

235

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This annual report is based on the activities of the Aerospace Safety Advisory Panel in calendar year 2000. During this year, the construction of the International Space Station (ISS) moved into high gear. The launch of the Russian Service Module was followed by three Space Shuttle construction and logistics flights and the deployment of the Expedition One crew. Continuous habitation of the ISS has begun. To date, both the ISS and Space Shuttle programs have met or exceeded most of their flight objectives. In spite of the intensity of these efforts, it is clear that safety was always placed ahead of cost and schedule. This safety consciousness permitted the Panel to devote more of its efforts to examining the long-term picture. With ISS construction accelerating, demands on the Space Shuttle will increase. While Russian Soyuz and Progress spacecraft will make some flights, the Space Shuttle remains the primary vehicle to sustain the ISS and all other U.S. activities that require humans in space. Development of a next generation, human-rated vehicle has slowed due to a variety of technological problems and the absence of an approach that can accomplish the task significantly better than the Space Shuttle. Moreover, even if a viable design were currently available, the realities of funding and development cycles suggest that it would take many years to bring it to fruition. Thus, it is inescapable that for the foreseeable future the Space Shuttle will be the only human-rated vehicle available to the U.S. space program for support of the ISS and other missions requiring humans. Use of the Space Shuttle will extend well beyond current planning, and is likely to continue for the life of the ISS.

2001-01-01

236

Plane and parabolic solar panels  

E-print Network

We present a plane and parabolic collector that absorbs radiant energy and transforms it in heat. Therefore we have a panel to heat water. We study how to increment this capture of solar beams onto the panel in order to increase its efficiency in heating water.

J. H. O. Sales; A. T. Suzuki

2009-05-14

237

Plane and parabolic solar panels  

E-print Network

We present a plane and parabolic collector that absorbs radiant energy and transforms it in heat. Therefore we have a panel to heat water. We study how to increment this capture of solar beams onto the panel in order to increase its efficiency in heating water.

Sales, J H O

2009-01-01

238

ISSUES RELATED TO PANEL CREEP  

Microsoft Academic Search

The annual inventory system was designed under the assumption that a fixed percentage of plots would be measured annually in each State. The initial plan was to assign plots to panels to provide systematic coverage of a State. One panel would be measured each year to allow for annual updates of each State using simple estimation procedures. The reality is

Paul C. Van Deusen

239

Solar energy collecting panel assembly  

Microsoft Academic Search

A solar energy collector is disclosed having panel assemblies for absorbing solar energy and transferring heat to moving air. Each panel assembly has a heat insulated housing carrying a plurality of side-by-side solar energy collector units. Each unit has a base plate carrying upwardly directed longitudinal ribs providing solar energy collector surfaces and downwardly directed longitudinal fins providing heat dissipating

1981-01-01

240

5 CFR 2471.1 - Request for Panel consideration; request for Panel approval of binding arbitration.  

...2014-01-01 2014-01-01 false Request for Panel consideration; request for Panel approval of binding arbitration. 2471.1 ...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES...

2014-01-01

241

5 CFR 2471.1 - Request for Panel consideration; request for Panel approval of binding arbitration.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Request for Panel consideration; request for Panel approval of binding arbitration. 2471.1 ...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES...

2010-01-01

242

5 CFR 2471.1 - Request for Panel consideration; request for Panel approval of binding arbitration.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Request for Panel consideration; request for Panel approval of binding arbitration. 2471.1 ...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES...

2013-01-01

243

5 CFR 2471.1 - Request for Panel consideration; request for Panel approval of binding arbitration.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Request for Panel consideration; request for Panel approval of binding arbitration. 2471.1 ...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES...

2011-01-01

244

5 CFR 2471.1 - Request for Panel consideration; request for Panel approval of binding arbitration.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Request for Panel consideration; request for Panel approval of binding arbitration. 2471.1 ...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES...

2012-01-01

245

Cooling fan shroud mounted on an engine vehicle  

SciTech Connect

This patent describes an easily removable cooling fan shroud adapted to be mounted between an engine and a radiator of an engine vehicle, comprising a rigid engine mounting, a rigid radiator mounting, and a flexible member formed as a circular cylindrical bellows normally extending between and connecting the engine mounting and the radiator mounting; wherein the bellows is spaced and separated from free ends of blades of a cooling fan, and the bellows extends from the radiator mounting to substantially a plane of rotation of the cooling fan and the bellows is axially compressible for removal of the cooling fan shroud through a space between the radiator and the cooling fan, lower portions of the engine mounting and the radiator mounting being engageable by slidably releasable U-shaped hook means with supports projecting from the engine and the radiator, upper portions of the engine mounting and the radiator being secureable to the engine and the radiator by means of bolts.

Yamaguchi, Y.; Yamaguchi, T.; Nagata, H.

1988-10-04

246

Performance of PV panels for solar energy conversion at the South Pole  

NASA Astrophysics Data System (ADS)

Expanding research facilities at the Amundson-Scott South pole station require increased electric power generation. Presently, electric power generation is by diesel generators using the JP8 fuel. As the station is accessible only for a short supply period during the austral summer, there are limitations upon the supply of fuel for power generation. This makes it necessary to seriously consider the use of the renewable energy sources. Although there is no sunlight for six months in the year, abundant solar energy is available during the remaining 6 months because of the clear skies, the clarity of air and the low humidity at the south pole. As the buildings at the south pole are built either without windows or with only porthole type windows, large areas on the walls and the roof are available for mounting the photovoltaic (PV) panels. In addition there is unlimited space around the station for constructing a PV panel 'farm'. In this paper four types of PV panels are evaluated; the 2-axis tracking panels, vertical 1-axis tracking panels, fixed vertical panels on the walls of buildings and mounted outdoors, and fixed horizontal panels on the roofs of the buildings. Equations are developed for the power output in KW/sq. ft and annual energy in kWh/sq. ft for each type of panel. The equations include the effects of the inclination of the sun above the horizon, the movement of the sun around the horizon, the direct, reflected and diffused components of the solar radiation, the characteristics of the solar cells and the types of dc/ac inverters used to interface the output of the cells with the existing ac power. A conceptual design of a 150-kW PV generation system suitable for the south pole is also discussed in this paper.

Peeran, Syed M.

247

Experimental investigation of the buckling characteristics of a beaded skin panel for a hypersonic aircraft - Including comparisons with finite element and classical analyses  

NASA Technical Reports Server (NTRS)

Results of a compression test of a beaded panel intended for a proposed hypersonic aircraft are presented. The panel was tested to failure at room temperature to determine its buckling characteristics, in particular, to study the buckling caused by pure compression. The boundary conditions of the panel simulated as nearly as possible a wing mounted condition. Strain, out-of-plane deflection, and load data were measured, and elastic buckling strength as well as mode shapes of the panel were determined. Application of the moire technique is described.

Siegel, W. H.; Fields, R. A.; Easley, J. T.

1978-01-01

248

76 FR 3677 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC 20506...Coordinator, Panel Operations, National Endowment for the Arts. [FR Doc....

2011-01-20

249

76 FR 23845 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC 20506...Coordinator, Panel Operations, National Endowment for the Arts. [FR Doc....

2011-04-28

250

7 CFR 2902.19 - Composite panels.  

Code of Federal Regulations, 2010 CFR

... (1) Plastic lumber composite panels. Engineered... (2) Acoustical composite panels. Engineered...commercial buildings. (b) Minimum biobased content...content requirement for all composite panels shall be based...accordance with this part, will give a...

2010-01-01

251

17 CFR 38.702 - Disciplinary panels.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Disciplinary panels. 38.702 Section 38.702 ...Procedures 38.702 Disciplinary panels. A designated contract market must establish one or more disciplinary panels that are authorized to fulfill...

2013-04-01

252

17 CFR 38.702 - Disciplinary panels.  

...2014-04-01 false Disciplinary panels. 38.702 Section 38.702 ...Procedures 38.702 Disciplinary panels. A designated contract market must establish one or more disciplinary panels that are authorized to fulfill...

2014-04-01

253

14 CFR 1259.600 - Panel description.  

Code of Federal Regulations, 2010 CFR

...Space 5 2010-01-01 2010-01-01 false Panel description. 1259.600 Section 1259.600 ...COLLEGE AND FELLOWSHIP PROGRAM Space Grant Review Panel 1259.600 Panel description. An independent committee, the...

2010-01-01

254

14 CFR 1259.600 - Panel description.  

Code of Federal Regulations, 2011 CFR

...Space 5 2011-01-01 2010-01-01 true Panel description. 1259.600 Section 1259.600 ...COLLEGE AND FELLOWSHIP PROGRAM Space Grant Review Panel 1259.600 Panel description. An independent committee, the...

2011-01-01

255

14 CFR 1259.600 - Panel description.  

Code of Federal Regulations, 2013 CFR

...Space 5 2013-01-01 2013-01-01 false Panel description. 1259.600 Section 1259.600 ...COLLEGE AND FELLOWSHIP PROGRAM Space Grant Review Panel 1259.600 Panel description. An independent committee, the...

2013-01-01

256

Heavy periodane.  

PubMed

The potential energy surface of the hypothetical NaMgAlSiPSCl system (heavy periodane) is exhaustively analyzed via the gradient embedded genetic algorithm (GEGA) in combination with density functional theory (DFT) computations. The electronegativity differences among the elements in both the second and third rows of the periodic table indicate that low-energy heavy periodane structures are obtained when highly electronegative and electropositive elements are bound together, but the global minimum of the heavy periodane system is completely different to its second-row analog (LiBeBCNOF). PMID:22903586

Azpiroz, Jon M; Moreno, Diego; Ramirez-Manzanares, Alonso; Ugalde, Jesus M; Mendez-Rojas, Miguel Angel; Merino, Gabriel

2013-05-01

257

Systems and methods for mirror mounting with minimized distortion  

NASA Technical Reports Server (NTRS)

A method for mounting a mirror for use in a telescope includes attaching the mirror to a plurality of adjustable mounts; determining a distortion in the mirror caused by the plurality adjustable mounts, and, if the distortion is determined to be above a predetermined level: adjusting one or more of the adjustable mounts; and determining the distortion in the mirror caused by the adjustable mounts; and in the event the determined distortion is determined to be at or below the predetermined level, rigidizing the adjustable mounts.

Antonille, Scott R. (Inventor); Wallace, Thomas E. (Inventor); Content, David A. (Inventor); Wake, Shane W. (Inventor)

2012-01-01

258

Digital Encyclopedia: George Washington's Mount Vernon  

NSDL National Science Digital Library

What was George Washington's life like at Mount Vernon? This frequent question is answered in fine form by this Digital Encyclopedia, compiled by a variety of scholars in collaboration with the Mount Vernon Estate. It is particularly appropriate that there is such a copious compendium of facts on the goings-on at Mt. Vernon, as Washington was enamored of encyclopedias during his life. Drawing on a range of primary sources, this project brings together hundreds of entries divided into over a dozen topics, including Military, Slavery, Food and Drink, and Animals. The Personal area is quite compelling, as it includes entries on Barbados, smallpox and, of course, the celebrated myths surrounding Washington's false teeth.

259

Mount St. Helens and Kilauea volcanoes  

SciTech Connect

Mount St. Helens' eruption has taught geologists invaluable lessons about how volcanoes work. Such information will be crucial in saving lives and property when other dormant volcanoes in the northwestern United States--and around the world--reawaken, as geologists predict they someday will. Since 1912, scientists at the U.S. Geological Survey's Hawaiian Volcano Observatory have pioneered the study of volcanoes through work on Mauna Loa and Kilauea volcanoes on the island of Hawaii. In Vancouver, Wash., scientists at the Survey's Cascades Volcano Observatory are studying the after-effects of Mount St. Helens' catalysmic eruption as well as monitoring a number of other now-dormant volcanoes in the western United States. This paper briefly reviews the similarities and differences between the Hawaiian and Washington volcanoes and what these volcanoes are teaching the volcanologists.

Barrat, J. (Smithsonian Institution, Washington, DC (USA))

1989-01-01

260

The AMiBA Hexapod Telescope Mount  

E-print Network

AMiBA is the largest hexapod astronomical telescope in current operation. We present a description of this novel hexapod mount with its main mechanical components -- the support cone, universal joints, jack screws, and platform -- and outline the control system with the pointing model and the operating modes that are supported. The AMiBA hexapod mount performance is verified based on optical pointing tests and platform photogrammetry measurements. The photogrammetry results show that the deformations in the inner part of the platform are less than 120 micron rms. This is negligible for optical pointing corrections, radio alignment and radio phase errors for the currently operational 7-element compact configuration. The optical pointing error in azimuth and elevation is successively reduced by a series of corrections to about 0.4 arcmin rms which meets our goal for the 7-element target specifications.

Koch, Patrick M; Nishioka, Hiroaki; Jiang, Homin; Lin, Kai-Yang; Umetsu, Keiichi; Huang, Yau-De; Raffin, Philippe; Chen, Ke-Jung; Ibanez-Romano, Fabiola; Chereau, Guillaume; Chen, Ming-Tang; Ho, Paul T P; Pausch, Konrad; Willmeroth, Klaus; Altamirano, Pablo; Chang, Chia-Hao; Chang, Shu-Hao; Chang, Su-Wei; Han, Chih-Chiang; Kubo, Derek; Li, Chao-Te; Liu, Guo-Chin; Martin-Cocher, Pierre; Oshiro, Peter; Wei, Ta-Shun; Birkinshaw, Mark; Lancaster, Katy; Lo, Kwok Yung; Martin, Robert N; Molnar, Sandor M; Patt, Ferdinand; Romeo, Bob

2009-01-01

261

Helmet mounted display systems for helicopter simulation  

NASA Technical Reports Server (NTRS)

Simulation scientists continually pursue improved flight simulation technology with the goal of closely replicating the 'real world' physical environment. The presentation/display of visual information for flight simulation is one such area enjoying recent technical improvements that are fundamental for conducting simulated operations close to the terrain. Detailed and appropriate visual information is especially critical for Nap-Of-the-Earth (NOE) helicopter flight simulation where the pilot maintains an 'eyes-out' orientation to avoid obstructions and terrain. This paper elaborates on the visually coupled Wide Field Of View Helmet Mounted Display (WFOVHMD) system technology as a viable visual display system for helicopter simulation. In addition the paper discusses research conducted on the NASA-Ames Vertical Motion Simulator that examined one critical research issue for helmet mounted displays.

Haworth, Loran A.; Bucher, Nancy; Runnings, David

1989-01-01

262

Making Sense of Mount St. Helens  

NSDL National Science Digital Library

Three decades out, the pulse of research quickens at Mount St. Helens (MSH) National Volcanic Monument. The eruption in 1980 resulted in "a grand experiment that you could never have gotten anybody to fund," says Forest Service ecologist Charles Crisafulli. Unlike most misbehaving volcanoes, this one provided an accessible laboratory right along the Interstate 5 corridor, with the research infrastructure of major universities nearby. Mount St. Helens has helped revise one of ecology's oldest preoccupations: trying to recapitulate the story of how communities of plants and animals assemble themselves over timeâhow one suite of species succeeds another. Statistical analyses find that environmental factors such as soils, temperatures, moisture, and elevation do not predict succession, especially in the early years after a disturbance. Instead, chance dominates: which seeds might be blown or carried in, what species are nearby or distant, and the "biological legacy" factors that survived the disturbance.

Steve Nash (University of Richmond;)

2010-09-01

263

Aircraft interior ANC with flat panel speakers  

NASA Astrophysics Data System (ADS)

In propeller driven aircraft the main source for internal noise are tonal disturbances caused by the propeller blades that are passing the fuselage. In a certain four propeller military transport aircraft the maximum sound level in the cabin can reach up to 110 dB(A), not taking into account any noise control treatments. Inside the semi closed loadmaster working station (LMWS) the sound level must be reduced down to 86 dB(A). It is proposed to reach this goal with an active noise control system, because passive solutions are to heavy at low frequencies. Optimal positions of the loudspeakers are found by finite element calculations. These positions have been realized in a full-scale test bed. A reduction of the sound pressure level of more than 30dB within a specified volume was achieved at a frequency of 100 Hz. HiFi speakers are used as secondary actuators in this test bed. These speakers are heavy and have unsuitable geometric dimensions for an aircraft. Therefore, other actuators, e.g. flat panel speakers, will be investigated with respect to the application in a mock-up of the LMWS.

Gerner, Christian; Sachau, Delf; Breitbach, Harald

2004-07-01

264

Fixture for mounting small parts for processing  

DOEpatents

A fixture for mounting small parts, such as fusion target spheres or microelectronic components is disclosed. A glass stalk is drawn and truncated near its tip. The truncated end of the glass stalk is dipped into silicone rubber forming an extending streamer. After the rubber cures for approximately 24 hours, a small part is touched to the streamer, and will be held securely throughout processing. 5 figs.

Foreman, L.R.; Gomez, V.M.; Thomas, M.H.

1990-05-29

265

Cantilever mounted resilient pad gas bearing  

NASA Technical Reports Server (NTRS)

A gas-lubricated bearing is described, employing at least one pad mounted on a rectangular cantilever beam to produce a lubricating wedge between the face of the pad and a moving surface. The load-carrying and stiffness characteristics of the pad are related to the dimensions and modulus of elasticity of the beam. The bearing is applicable to a wide variety of types of hydrodynamic bearings.

Etsion, I. (inventor)

1978-01-01

266

Sulphur dioxide discharge from Mount Etna  

Microsoft Academic Search

REMOTE sensing of SO2 emitted by Mount Etna in its normal state of permanent activity, indicates much higher flow-rates than those previously measured by the same method (correlation spectrometry) on other volcanoes. A set of measurements in June 1975 provided a mean SO2 flow-rate of 3,740 t d-1 for this volcano. This is a striking result both for volcanology and

R. Haulet; P. Zettwoog; J. C. SABROUX

1977-01-01

267

Conceptual design for PSP mounting bracket  

SciTech Connect

Protective structural packages (PSP`s or overpacks) used to ship 2 1/2-ton UF{sub 6} product cylinders are bolted to truck trailers. All bolts penetrate two longitudinal rows of wooden planks. Removal and replacement is required at various intervals for maintenance and routine testing. A conceptual design is presented for mounting brackets which would securely attach PSP`s to trailer frames, reduce removal and replacement time, and minimize risk of personnel injury.

Ransom, G.; Stein, R. [Martin Marietta Energy Systems, Inc., Piketon, OH (United States)

1991-12-31

268

VISUALIZATION AND ANIMATION OF MOUNT EVEREST  

Microsoft Academic Search

In the year 1988 a new topographical map 1:50'000 of the Mount Everest region was published by the National Geographical Society. The full map content was derived from aerial images of scale 1:35'000, acquired in a 1984 photogrammetric flight. This highly acclaimed topographical map, produced with Swiss photogrammetric and cartographic know-how, serves until nowadays as an important work of reference.

Armin Gruen; Andreas Roditakis

269

On Mounting Delicate Bryophytes in Glycerol  

Microsoft Academic Search

Glycerine jelly is an effective substitute microscopic mounting medium for now dif ficult-to-obtain gum chloral preparations. It does not collapse most thin bryophyte tissues, pre serves color responses of cell walls to potassium hydroxide solution, and is made from easily obtained, non-poisonous ingredients. Like other glycerol-based mountants, it evaporates only very slowly and, with luting, is essentially permanent. The study

Richard H. Zander

1997-01-01

270

Holographic Helmet-Mounted Display Unit  

NASA Technical Reports Server (NTRS)

Helmet-mounted display unit designed for use in testing innovative concepts for display of information to aircraft pilots. Operates in conjunction with computers generating graphical displays. Includes two ocular subunits containing miniature cathoderay tubes and optics providing 40 degrees vertical, 50 degrees horizontal field of view to each eye, with or without stereopsis. In future color application, each ocular subunit includes trichromatic holographic combiner tuned to red, green, and blue wavelengths of phosphors used in development of miniature color display devices.

Burley, James R., II; Larussa, Joseph A.

1995-01-01

271

Collecting, Cleaning, Mounting, and Photographing Diatoms  

Microsoft Academic Search

\\u000a This chapter describes techniques used by diatomists to clean and mount diatoms successfully. The techniques involve the use\\u000a of extremely hazardous chemicals that are a serious threat to ones health and physical safety, including strong mineral acids\\u000a that can cause severe skin burns or blindness after brief contact with the skin or eyes; sodium hydroxide, a strong base which\\u000a can

Stephen S. Nagy

272

Heavy Flavors  

NASA Astrophysics Data System (ADS)

This is a summary report of the working group on Heavy Flavors. Discussions at the workshop were centered on B physics and on the signals for heavy quarks and leptons at the SSC. The Working Group Members were: V. Barger, H.-U. Bengtsson, C. Buchanan, I. Bigi, M. Block, B. Cox, N. Glover, J. Hewett, W.Y. Keung, B. Margolis, T. Rizzo, M. Suzuki, A. Soni, D. Stork, and S. Willenbrock.

Cox, B.; Soni, A.

273

Heavy Lifting  

NSDL National Science Digital Library

In this activity, learners work in NASA teams to build balloon-powered rockets using identical parts and compete to launch the greatest number of paper clips to "space" (the ceiling). The rockets learners build model the Ares V heavy lift launchers that carry heavy payloads into orbit. This lesson plan includes background information, tips, discussion questions and answers, and a "Mission Report" sheet for learners.

Shearer, Deborah A.; Gregory L. Vogt, Ed D.

2012-06-26

274

Expandable panel and truss system/antenna/solar panel  

SciTech Connect

Disclosed is an expandable panel and truss structure capable of being stowed in a storage container (canister) for transportation into space and deployed to form structures such as antennas, solar panels or similar space or terrestial structures. The antenna formed comprises the panels stored as hinged pairs (sets) folded in accordian-like fashion together with the expandable trusses and other devices necessary for antenna space operation, such as attitude control and antenna feed. The panel sets are deployed from the canister to form a toroidal ring, circular in cross-section when deployed, for supporting the antenna lens and to form a feed support boom utilizing the canister as part of the antenna structure. The canister is connected to the ring and support boom in the deployed state by the expandable trusses. A fully automatic system is included for deploying the antenna and for holding the antenna structure in its deployed state. By adding a second (back) boom and reflector screen, a paraboloidal antenna is formed. In a second embodiment, utilizing the same storage and deployment principle but with panel sets which are triangular in cross-section, when deployed, either an offset (asymmetrical) paraboloidal or a feed horn type antenna structure is formed. In another embodiment of the invention, utilizing the same principle and with panel sets which are triangular in crosssection, when deployed, a solar panel array is formed. Also disclosed is a foldable truss geostationary platform and package for transfer into a geostationary orbit. Finally, an alternate mechanism is disclosed in the form of a pantograph for deploying panel sets to form a truss.

Slysh, P.

1983-04-12

275

MEMS accelerometers in accurate mount positioning systems  

NASA Astrophysics Data System (ADS)

In order to attain precise, accurate and stateless positioning of telescope mounts we apply microelectromechanical accelerometer systems (also known as MEMS accelerometers). In common practice, feedback from the mount position is provided by electronic, optical or magneto-mechanical systems or via real-time astrometric solution based on the acquired images. Hence, MEMS-based systems are completely independent from these mechanisms. Our goal is to investigate the advantages and challenges of applying such devices and to reach the sub-arcminute range { that is well smaller than the field-of-view of conventional imaging telescope systems. We present how this sub-arcminute accuracy can be achieved with very cheap MEMS sensors. Basically, these sensors yield raw output within an accuracy of a few degrees. We show what kind of calibration procedures could exploit spherical and cylindrical constraints between accelerometer output channels in order to achieve the previously mentioned accuracy level. We also demonstrate how can our implementation be inserted in a telescope control system. Although this attainable precision is less than both the resolution of telescope mount drive mechanics and the accuracy of astrometric solutions, the independent nature of attitude determination could significantly increase the reliability of autonomous or remotely operated astronomical observations.

Mszros, Lszl; Pl, Andrs.; Jask, Attila

2014-07-01

276

Acoustic fatigue and sound transmission characteristics of a ram composite panel design  

NASA Technical Reports Server (NTRS)

An experimental study to determine the acoustic fatigue characteristics of a flat multi-layered structural panel is described. The test panel represented a proposed design for the outer skin of a research application module to be housed within the space shuttle orbiter vehicle. The test specimen was mounted in one wall of the Wyle 100,000 cu ft reverberation room and exposed to a broadband acoustic environment having an overall level of 145 db. The test panel was exposed to nine separate applications of the acoustic environment, each application consisting of 250 seconds duration. Upon completion of the ninth test run, the specimen was exposed to a simulated micrometeoroid impact near the panel center. One additional test run of 250 seconds duration was then performed to complete the overall simulation of 50 flight missions. The experimental results show that no significant fatigue damage occurred until the test specimen was exposed to a simulated micrometeoroid impact. The intermediate foam layer forming the core of the test specimen suffered considerable damage due to this impact, causing a marked variation in the dynamic characteristics of the overall test panel. During the final application of the acoustic environment, the strain and acceleration response spectra showed considerable variation from those spectra obtained prior to impact of the panel. Fatigue damage from acoustic loading however, was limited to partial de-bonding around the edges of the composite panel.

Cockburn, J. A.; Chang, K. Y.; Kao, G. C.

1972-01-01

277

4. Panama Mount. Note concrete ring and metal rail. Note ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. Panama Mount. Note concrete ring and metal rail. Note cliff erosion under foundation at left center. Looking 297 W. - Fort Funston, Panama Mounts for 155mm Guns, Skyline Boulevard & Great Highway, San Francisco, San Francisco County, CA

278

Thin film concentrator panel development  

NASA Technical Reports Server (NTRS)

The development and testing of a rigid panel concept that utilizes a thin film reflective surface for application to a low-cost point-focusing solar concentrator is discussed. It is shown that a thin film reflective surface is acceptable for use on solar concentrators, including 1500 F applications. Additionally, it is shown that a formed steel sheet substrate is a good choice for concentrator panels. The panel has good optical properties, acceptable forming tolerances, environmentally resistant substrate and stiffeners, and adaptability to low to mass production rates. Computer simulations of the concentrator optics were run using the selected reflector panel design. Experimentally determined values for reflector surface specularity and reflectivity along with dimensional data were used in the analysis. The simulations provided intercept factor and net energy into the aperture as a function of aperture size for different surface errors and pointing errors. Point source and Sun source optical tests were also performed.

Zimmerman, D. K.

1982-01-01

279

NCI DEA - President's Cancer Panel  

Cancer.gov

National Institutes of Health, National Cancer Institute, Division of Extramural Activities - Home Page Skip to Main Content Home Funding Advisory Consumer Guides FAQs & Glossary Awarded Research Division of Extramural Activities President's Cancer Panel Site

280

Panel Discussion on Scalar Mesons  

E-print Network

A panel discussion on scalar mesons was held with the participation of David Bugg, Yulia Kalashnikova, Keh-Fei Liu, Michael Scadron, the author, and members of the audience. Some introductory remarks are noted here.

Jonathan L. Rosner

2008-04-04

281

Automated Solar Panel Assembly Line.  

National Technical Information Service (NTIS)

The initial stage of the automated solar panel assembly line program was devoted to concept development and proof of approach through simple experimental verification. In this phase, laboratory bench models were built to demonstrate and verify concepts. F...

H. Somberg

1981-01-01

282

Mounting apparatus for a nozzle guide vane assembly  

DOEpatents

The present invention provides a ceramic nozzle guide assembly with an apparatus for mounting it to a metal nozzle case that includes an intermediate ceramic mounting ring. The mounting ring includes a plurality of projections that are received within a plurality of receptacles formed in the nozzle case. The projections of the mounting ring are secured within the receptacles by a ceramic retainer that allows contact between the two components only along arcuate surfaces thus eliminating sliding contact between the components. 8 figs.

Boyd, G.L.; Shaffer, J.E.

1995-09-12

283

Integral Flexure Mounts for Metal Mirrors for Cryogenic Use  

NASA Technical Reports Server (NTRS)

Semi-kinematic, six-degree-of-freedom flexure mounts have been incorporated as integral parts of metal mirrors designed to be used under cryogenic conditions as parts of an astronomical instrument. The design of the mirrors and their integral flexure mounts can also be adapted to other instruments and other operating temperatures. In comparison with prior kinematic cryogenic mirror mounts, the present mounts are more compact and can be fabricated easily using Ram-EDM (electrical discharge machining) process

Zewari, S. Wahid; Hylan, Jason E.; Irish, Sandra M.; Ohl, Raymond G.; Conkey, Shelly B.

2006-01-01

284

NASA Aerospace Safety Advisory Panel  

NSDL National Science Digital Library

Established by Congress after the Apollo spacecraft fire in January 1967, the Aerospace Safety Advisory Panel (ASAP) is an independent group of experts tasked with advising "the NASA Administrator and Congress on all safety-related issues -- design, development, manufacturing, flight preparation, and missions operations -- concerning NASA's human space flight programs." The ASAP homepage features the text of previous annual reports and general information about the Panel and its activities.

285

Two Thick Microwave Dichroic Panels  

NASA Technical Reports Server (NTRS)

Cross-shaped apertures enable relatively tight packing, eliminating some grating lobes. Two panels made of thin, honey-comblike metal walls constitute planar arrays of waveguidelike apertures designed to satisfy special requirements with respect to microwave transmittance and reflectance. Considered for use in multiplexing signals at various frequencies in microwave communication system. Both panels required to exhibit low insertion loss. Angle of incidence 30 degrees.

Epp, Larry W.; Chen, Jacqueline C.; Stanton, Philip H.; Jorgenson, Roy E.

1994-01-01

286

Detection Performance of Upgraded "Polished Panel" Optical Receiver Concept on the Deep-Space Network's 34 Meter Research Antenna  

NASA Technical Reports Server (NTRS)

Initial optical communications experiments with a Vertex polished aluminum panel have been described. The polished panel was mounted on the main reflector of the DSN's research antenna at DSS-13. The PSF was recorded via remotely controlled digital camera mounted on the subreflector structure. Initial PSF generated by Jupiter showed significant tilt error and some mechanical deformation. After upgrades, the PSF improved significantly, leading to much better concentration of light. Communications performance of the initial and upgraded panel structure were compared. After the upgrades, simulated PPM symbol error probability decreased by six orders of magnitude. Work is continuing to demonstrate closed-loop tracking of sources from zenith to horizon, and better characterize communications performance in realistic daytime background environments.

Vilnrotter, Victor A.

2012-01-01

287

30 Cool Facts about Mount St. Helens  

USGS Publications Warehouse

Commemorating the 30th anniversary of the 1980 eruptions of Mount St. Helens 1-During the past 4,000 years, Mount St. Helens has erupted more frequently than any other volcano in the Cascade Range. 2-Most of Mount St. Helens is younger than 3,000 years old (younger than the pyramids of Egypt). 3-Some Native American names that refer to smoke at the volcano include- Lawala Clough, Low-We- Lat-Klah, Low-We-Not- Thlat, Loowit, Loo-wit, Loo-wit Lat-kla, and Louwala-Clough. 4-3,600 years ago-Native Americans abandoned hunting grounds devastated by an enormous eruption four times larger than the May 18, 1980 eruption. 5-1792-Captain George Vancouver named the volcano for Britain's ambassador to Spain, Alleyne Fitzherbert, also known as Baron St. Helens. 6-1975-U.S. Geological Survey geologists forecasted that Mount St. Helens would erupt again, 'possibly before the end of the century.' 7-March 20, 1980-A magnitude 4.2 earthquake signaled the reawakening of the volcano after 123 years. 8-Spring 1980-Rising magma pushed the volcano's north flank outward 5 feet per day. 9-Morning of May 18, 1980- The largest terrestrial landslide in recorded history reduced the summit by 1,300 feet and triggered a lateral blast. 10-Within 3 minutes, the lateral blast, traveling at more than 300 miles per hour, blew down and scorched 230 square miles of forest. 11-Within 15 minutes, a vertical plume of volcanic ash rose over 80,000 feet. 12-Afternoon of May 18, 1980-The dense ash cloud turned daylight into darkness in eastern Washington, causing streetlights to turn on in Yakima and Ritzville. 13-The volcanic ash cloud drifted east across the United States in 3 days and encircled Earth in 15 days. 14-Lahars (volcanic mudflows) filled rivers with rocks, sand, and mud, damaging 27 bridges and 200 homes and forcing 31 ships to remain in ports upstream. 15-The May 18, 1980 eruption was the most economically destructive volcanic event in U.S. history. 16-Small plants and trees beneath winter snow, and roots protected by soil, survived the May 18, 1980 eruption and now thrive. 17-Thousands of birds, mammals, reptiles, amphibians, and millions of hatchery fingerlings perished in the eruption. 18-Late May 1980-Wind-dispersed spiders and scavenging beetles were among the first animals to return to the Mount St. Helens area. 19-The landscape devastated by the eruption has evolved into a rich and diverse habitat for plants and animals. 20-Effects of the May 18, 1980 eruption continue today. Biologists help wild salmon and steelhead by giving them a tank-truck ride to the pristine, clear creeks above sediment-choked rivers. 21-Late spring through fall 1980-Explosive eruptions on May 25, June 12, July 22, August 7, and October 16-18 rocked Mount St. Helens and sent ash to distant communities. 22-1982-Mount St. Helens National Volcanic Monument was established for all to observe both the awesome destruction and the remarkable recovery of plants and animals. 23-October 1980 to 1986- Over the course of 17 episodes, lava eruptions began filling the crater, building a lava dome that reached 876 feet above the crater floor. 24-Since 1986, snow and rock accumulating in the deep, shaded crater formed Crater Glacier, the youngest glacier on Earth. 25-September 2004-Mount St. Helens reawakened, and it erupted continuously until January 2008. 26-October 2004 to January 2008-Growing lava domes displaced and then divided Crater Glacier into east and west lobes. The ice lobes moved downslope as fast as 6 feet per day, converging below the lava dome a little more than three years later. 27-During the 2004 to 2008 eruptions-Mount St. Helens settled one half inch due to magma withdrawal beneath the volcano. 28-The Global Positioning System (GPS) instrument that detected the settling of Mount St. Helens can detect movement of as little as 1/16 of an inch and uses less power than a refrigerator lightbulb. 29-During the 1980 to 1

Driedger, Carolyn.; Westby Liz; Faust, Lisa; Frenzen, Peter; Bennett, Jeanne; Clynne, Michael

2010-01-01

288

Identification of impact force for smart composite stiffened panels  

NASA Astrophysics Data System (ADS)

In this work, a new methodology is presented for reconstruction of the impact force history using artificial neural networks (ANNs) and spectral components of sensor data recorded by piezoceramic sensors. A large set of data, required for training the ANNs, was generated by using an efficient nonlinear finite element (FE) model of a sensorised composite stiffened panel. Impact experiments were performed on a composite plate equipped with surface-mounted piezoceramic sensors to validate the numerical modelling approach. Using the FE model of the panel, data were generated for impacts that are likely to occur during the life-time of an aircraft, consisting of large mass (e.g. dropping tool) and small mass (e.g. debris) impacts at various locations, i.e. in the bay, on the foot of a stringer and over/under a stringer. Even though the panel undergoes large deformation during impact (nonlinear response), the established networks predict the impact force history and its peak with reasonable accuracy.

Ghajari, M.; Sharif-Khodaei, Z.; Aliabadi, M. H.; Apicella, A.

2013-08-01

289

Growth Empirics: A Panel Data Approach  

Microsoft Academic Search

A panel data approach is advocated and implemented for studying growth convergence. The familiar equation for testing convergence is reformulated as a dynamic panel data model and different panel data estimators are used to estimate it. The main usefulness of the panel approach lies in its ability to allow for differences in the aggregate production function across economies. This leads

Nazrul Islam

1995-01-01

290

Solar energy collection panel and method  

Microsoft Academic Search

A solar energy, concentrating and absorption panel is provided together with a method for converting solar energy to heat energy or electrical energy by the reflection and concentration of solar energy intersecting the panel. The panel is formed with a solar energy receiving portion thereof which is defined by a plurality of parallel channels extending horizontally across the panel, each

Lemelson

1981-01-01

291

PANELS AND OTHER SURVEY EXTENSIONS TO THE  

E-print Network

(TTS) PROGRAM 3 3. PLANNING ISSUES WITHIN THE GTA 7 4. PANEL SURVEYS 10 5. OTHER SURVEY ISSUES 43 6.1 Alternative GTA Panel Survey Design Options 44 List of Tables Page No. 2.1 TTS Aggregate Attributes 45 6.1 Preliminary Cost Estimates for a GTA Panel Survey 46 #12;Panels & Other Surveys 1 1

Toronto, University of

292

Student News Spring, 2012 AWWA Career Panel  

E-print Network

Student News Spring, 2012 AWWA Career Panel On February 22, 2012, the Clemson Student Chapter of the American Water Works Association (AWWA) held a first-of-its-kind "Career Panel" event. The panel internship and full-time career opportunities and open doors for future networking. The Career Panel event

Stuart, Steven J.

293

Easy Attachment Of Panels To A Truss  

NASA Technical Reports Server (NTRS)

Conceptual antenna dish, solar collector, or similar structure consists of hexagonal panels supported by truss erected in field. Truss built in increments to maintain access to panel-attachment nodes. Each panel brought toward truss at angle and attached to two nodes. Panel rotated into attachment at third node.

Thomson, Mark; Gralewski, Mark

1992-01-01

294

Analysis of 3-panel and 4-panel microscale ionization sources  

NASA Astrophysics Data System (ADS)

Two designs of a microscale electron ionization (EI) source are analyzed herein: a 3-panel design and a 4-panel design. Devices were fabricated using microelectromechanical systems technology. Field emission from carbon nanotube provided the electrons for the EI source. Ion currents were measured for helium, nitrogen, and xenon at pressures ranging from 10-4 to 0.1 Torr. A comparison of the performance of both designs is presented. The 4-panel microion source showed a 10 improvement in performance compared to the 3-panel device. An analysis of the various factors affecting the performance of the microion sources is also presented. SIMION, an electron and ion optics software, was coupled with experimental measurements to analyze the ion current results. The electron current contributing to ionization and the ion collection efficiency are believed to be the primary factors responsible for the higher efficiency of the 4-panel microion source. Other improvements in device design that could lead to higher ion source efficiency in the future are also discussed. These microscale ion sources are expected to find application as stand alone ion sources as well as in miniature mass spectrometers.

Natarajan, Srividya; Parker, Charles B.; Piascik, Jeffrey R.; Gilchrist, Kristin H.; Stoner, Brian R.; Glass, Jeffrey T.

2010-06-01

295

Analysis of 3-panel and 4-panel microscale ionization sources  

SciTech Connect

Two designs of a microscale electron ionization (EI) source are analyzed herein: a 3-panel design and a 4-panel design. Devices were fabricated using microelectromechanical systems technology. Field emission from carbon nanotube provided the electrons for the EI source. Ion currents were measured for helium, nitrogen, and xenon at pressures ranging from 10{sup -4} to 0.1 Torr. A comparison of the performance of both designs is presented. The 4-panel microion source showed a 10x improvement in performance compared to the 3-panel device. An analysis of the various factors affecting the performance of the microion sources is also presented. SIMION, an electron and ion optics software, was coupled with experimental measurements to analyze the ion current results. The electron current contributing to ionization and the ion collection efficiency are believed to be the primary factors responsible for the higher efficiency of the 4-panel microion source. Other improvements in device design that could lead to higher ion source efficiency in the future are also discussed. These microscale ion sources are expected to find application as stand alone ion sources as well as in miniature mass spectrometers.

Natarajan, Srividya; Parker, Charles B.; Glass, Jeffrey T. [Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708 (United States); Piascik, Jeffrey R.; Gilchrist, Kristin H. [Center for Materials and Electronic Technologies, RTI International, Research Triangle Park, North Carolina 27709 (United States); Stoner, Brian R. [Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708 (United States); Center for Materials and Electronic Technologies, RTI International, Research Triangle Park, North Carolina 27709 (United States)

2010-06-15

296

ATST telescope mount: telescope of machine tool  

NASA Astrophysics Data System (ADS)

The Advanced Technology Solar Telescope (ATST) will be the largest solar telescope in the world, and will be able to provide the sharpest views ever taken of the solar surface. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. The technology normally used in this class of telescope is well understood in the telescope community and has been successfully implemented in numerous projects. The world of large machine tools has developed in a separate realm with similar levels of performance requirement but different boundary conditions. In addition the competitive nature of private industry has encouraged development and usage of more cost effective solutions both in initial capital cost and thru-life operating cost. Telescope mounts move relatively slowly with requirements for high stability under external environmental influences such as wind buffeting. Large machine tools operate under high speed requirements coupled with high application of force through the machine but with little or no external environmental influences. The benefits of these parallel development paths and the ATST system requirements are being combined in the ATST Telescope Mount Assembly (TMA). The process of balancing the system requirements with new technologies is based on the experience of the ATST project team, Ingersoll Machine Tools who are the main contractor for the TMA and MT Mechatronics who are their design subcontractors. This paper highlights a number of these proven technologies from the commercially driven machine tool world that are being introduced to the TMA design. Also the challenges of integrating and ensuring that the differences in application requirements are accounted for in the design are discussed.

Jeffers, Paul; Stolz, Gnter; Bonomi, Giovanni; Dreyer, Oliver; Krcher, Hans

2012-09-01

297

High Speed Rotor Head Mounted Instrumentation System  

NASA Technical Reports Server (NTRS)

NASA Ames Research Center has been investigating the air flow of a rotor blade on a UH-60 Blackhawk helicopter in-flight. This paper will address the hardware problems and solutions used to design and fabricate an instrumentation system on top of a UH-60 main rotor head. The instrumentation system consisted of 10 data systems operating in parallel and collected data from 370 sensors that are mounted in four rotor blades and on the rotating rotor head. The data was recorded on board the aircraft and simultaneously down linked to the ground station at 7.5 MHz.

Hee, Leonard; Reynolds, R. S. (Technical Monitor)

1997-01-01

298

Mount Zirkel Wilderness and vicinity, Colorado  

SciTech Connect

Several areas of metallic and nonmetallic mineralization have been identified from surface occurrences within the Mount Zirkel Wilderness and vicinity, Colorado. Three areas of probable copper-lead-zinc-silver-gold resource potential, two areas of probable chrome-platinum resource potential, four areas of probable uranium-thorium resource potential, two areas of probable molybdenum resource potential, and one area of probable fluorspar potential were identified by studies in 1965-1973 by the USGS and USBM. No potential for fossil fuel or geothermal resources was identified.

Snyder, G.L.; Patten, L.L.

1984-01-01

299

Mount St. Helens VolcanoCam  

NSDL National Science Digital Library

This webcam shows a static image of Mount St. Helens taken from the Johnston Ridge Observatory. The Observatory and VolcanoCam are located at an elevation of approximately 4,500 feet, about five miles from the volcano. The observer is looking approximately south-southeast across the North Fork Toutle River Valley. The VolcanoCam image automatically updates approximately every five minutes. Other features include current conditions reports, weather updates, an image achive, and eruption movies. In addition, there are frequently asked questions, and information about using the VolcanoCam image and funding for the VolcanoCam.

300

Mount Pinatubo: Predicting a Volcanic Eruption  

NSDL National Science Digital Library

In spite of the unpredictability of volcanoes, scientists have learned to read the many signs they display prior to an eruption, in the hope of minimizing damage to lives and personal property. This video segment describes efforts of scientists at the Pinatubo Volcanic Observatory to read the signs presented by Mount Pinatubo, just before it unleashed one of the most powerful eruptions of the 20th century. The segment is six minutes fifty-seven minutes in length. A background essay and list of discussion questions supplement the video.

301

Mount Pinatubo: Predicting a Volcanic Eruption  

NSDL National Science Digital Library

In spite of the unpredictability of volcanoes, scientists have learned to read the many signs they display prior to an eruption, in the hope of minimizing damage to lives and personal property. This video segment describes efforts of scientists at the Pinatubo Volcanic Observatory to read the signs presented by Mount Pinatubo, just before it unleashed one of the most powerful eruptions of the 20th century. The segment is six minutes fifty-seven minutes in length. A background essay and list of discussion questions supplement the video.

2011-06-10

302

Habitat changes: Mount Haggin Wildlife Management Area  

USGS Publications Warehouse

In 1984, a rest-rotation grazing system was established on the Mount Haggin Wildlife Management Area (MHWMA) in southwest Montana. The area is a mixture of wet and dry meadow types, grass/shrublands, and forest. Prior to implementing the grazing system, photo-monitoring points were established on the MHWMA at locations were cattle concentrate were grazing. The area consists of a three pasture rest-rotation system incorporating 20,000 acres. Photo essays revealed changes in riparian, lowland, and upland sites within the grazing system. In addition, gross changes in the amount of willow present were documented.

Frisina, M.R.; Keigley, R.B.

2004-01-01

303

Grid-connected polymer solar panels: initial considerations of cost, lifetime, and practicality.  

PubMed

Large solar panels were constructed from polymer solar cell modules prepared using full roll-to-roll (R2R) manufacture based on the previously published ProcessOne. The individual flexible polymer solar modules comprising multiple serially connected single cell stripes were joined electrically and laminated between a 4 mm tempered glass window and black Tetlar foil using two sheets of 0.5 mm thick ethylene vinyl acetate (EVA). The panels produced up to 8 W with solar irradiance of ~960 Wm?, and had outer dimensions of 1 m x 1.7 m with active areas up to 9180 cm. Panels were mounted on a tracking station and their output was grid connected between testing. Several generations of polymer solar cells and panel constructions were tested in this context to optimize the production of polymer solar panels. Cells lacking a R2R barrier layer were found to degrade due to diffusion of oxygen after less than a month, while R2R encapsulated cells showed around 50% degradation after 6 months but suffered from poor performance due to de-lamination during panel production. A third generation of panels with various barrier layers was produced to optimize the choice of barrier foil and it was found that the inclusion of a thin protective foil between the cell and the barrier foil is critical. The findings provide a preliminary foundation for the production and optimization of large-area polymer solar panels and also enabled a cost analysis of solar panels based on polymer solar cells. PMID:21165057

Medford, Andrew J; Lilliedal, Mathilde R; Jrgensen, Mikkel; Aar, Dennis; Pakalski, Heinz; Fyenbo, Jan; Krebs, Frederik C

2010-09-13

304

High temperature structural sandwich panels  

NASA Astrophysics Data System (ADS)

High strength composites are being used for making lightweight structural panels that are being employed in aerospace, naval and automotive structures. Recently, there is renewed interest in use of these panels. The major problem of most commercial available sandwich panels is the fire resistance. A recently developed inorganic matrix is investigated for use in cases where fire and high temperature resistance are necessary. The focus of this dissertation is the development of a fireproof composite structural system. Sandwich panels made with polysialate matrices have an excellent potential for use in applications where exposure to high temperatures or fire is a concern. Commercial available sandwich panels will soften and lose nearly all of their compressive strength temperatures lower than 400C. This dissertation consists of the state of the art, the experimental investigation and the analytical modeling. The state of the art covers the performance of existing high temperature composites, sandwich panels and reinforced concrete beams strengthened with Fiber Reinforced Polymers (FRP). The experimental part consists of four major components: (i) Development of a fireproof syntactic foam with maximum specific strength, (ii) Development of a lightweight syntactic foam based on polystyrene spheres, (iii) Development of the composite system for the skins. The variables are the skin thickness, modulus of elasticity of skin and high temperature resistance, and (iv) Experimental evaluation of the flexural behavior of sandwich panels. Analytical modeling consists of a model for the flexural behavior of lightweight sandwich panels, and a model for deflection calculations of reinforced concrete beams strengthened with FRP subjected to fatigue loading. The experimental and analytical results show that sandwich panels made with polysialate matrices and ceramic spheres do not lose their load bearing capability during severe fire exposure, where temperatures reach several hundred degrees Centigrade. Hence the material has excellent potential for various types of applications. The analytical predictions from both models provide reasonably accurate results. Glass, AR-glass, carbon and Nicalon tows and carbon fabrics could be successfully used as skin reinforcements increasing the flexural stiffness and strength of the core. No occurrence of fiber delamination was observed.

Papakonstantinou, Christos G.

305

Athermal mounting of optics in metallic housings  

NASA Astrophysics Data System (ADS)

This paper illustrates an athermal mounting for a Zinc Selenide (ZnSe) optic in an AlBeMet housing for use at cryogenic temperatures. The GOES-R Advanced Baseline Imager (ABI) instrument beamsplitter utilizes this design and the difficulty is the significant delta in the coefficient of thermal expansion (CTE) between the housing and the optic. The high discrepancy in CTE is exacerbated by a large thermal range from an ambient assembly to cryogenic operational temperature. The assembly utilizes CTE matched clips bonded to the optic using a well controlled bondline. The clips are attached to an optimized spacer of a high CTE material that is used to reduce the CTE mismatch. The spacers are coupled to a four flexure design that is symmetric in both axes. The net effect reduces the apparent CTE between the optic and the housing in a space constrained mounting. The flexures allow the final small amount of expansion room that the assembly requires as it goes over a large temperature swing. This design was qualified through extensive thermal cycling and vibration testing, and exhibited performance acceptable for production.

Leahy, Zachary N.; Magner, Andrew J.

2013-09-01

306

Postbuckling of laminated anisotropic panels  

NASA Technical Reports Server (NTRS)

A two-part study of the buckling and postbuckling of laminated anisotropic plates with bending-extensional coupling is presented. The first part involves the development and application of a modified Rayleigh-Ritz analysis technique. Modifications made to the classical technique can be grouped into three areas. First, known symmetries of anisotropic panels are exploited in the selection of approximation functions. Second, a reduced basis technique based on these same symmetries is applied in the linear range. Finally, geometric boundary conditions are enforced via an exterior penalty function approach, rather than relying on choice of approximation functions to satisfy these boundary conditions. Numerical results are presented for both the linear and nonlinear range, with additional studies made to determine the effect of variation in penalty parameter and number of basis vectors. In the second part, six panels possessing anisotropy and bending-extensional coupling are tested. Detailed comparisons are made between experiment and finite element results in order to gain insight into the postbuckling and failure characteristics of such panels. The panels are constructed using two different lamination sequences, and panels with three different aspect ratios were constructed for each lamination sequence.

Jeffrey, Glenda L.

1987-01-01

307

Light redirecting system using sine-wave based panels for dense urban areas  

NASA Astrophysics Data System (ADS)

Cities and towns around the world are becoming more condensed due to the shrinking amount of buildable areas, which significantly reduces the amount of light that occupants have access to. This lack of natural lighting results in health, safety and quality of life degradation. This paper presents a new technique of transmitting sunlight downward into narrow alleys and streets, by using a daylighting guiding acrylic panel that is capable of changing the direction and distribution of the incident light. The core of the proposed daylight guidance system is made up of light transmission panels with high quality. The corrugations have sine wave shaped cross-section so that the panel functions as an optical diffuser perpendicular to the direction of sunlight propagation. The day lighting system consists of the corrugated panels and a lattice frame, which supports the panel. The proposed system is to be mounted on the building roof facing the sun so as to redirect the incident sunlight downward into the narrow alleys or streets. Since building sizes and orientations are different the frame is arranged such that substantially deep light penetration and high luminance level can be achieved. Simulation results show that the proposed panel improves the illuminance values by more than 200% and 400% in autumn and winter, respectively, provides fan-out angle that exceeds 80 for certain solar altitudes and the transmitted power percentage varies from 40% to 90% as the solar altitude varies from 10 to 80. Experimental results are in a good agreement with the simulations.

Mohamed, Mohamed W. N.; Mashaly, Islam A.; Mohamed, Osama N.; El-Henawy, Sally I.; Galal, Ola; Taha, Iman; Nassar, Khaled; Safwat, Amr M. E.

2014-09-01

308

Deposits of large volcanic debris avalanches at Mount St. Helens and Mount Shasta volcanoes  

SciTech Connect

Large volcanic debris avalanches are among the world's largest mass movements. The rockslide-debris avalanche of the May 18, 1980, eruption of Mount St. Helens produced a 2.8 km/sup 3/ deposit and is the largest historic mass movement. A Pleistocene debris avalanche at Mount Shasta produced a 26 km/sup 3/ deposit that may be the largest Quaternary mass movement. The hummocky deposits at both volcanoes consist of rubble divided into (1) block facies that comprises unconsolidated pieces of the old edifice transported relatively intact, and (2) matrix facies that comprises a mixture of rocks from the old mountain and material picked up from the surrounding terrain. At Mount St. Helens, the juvenile dacite is found in the matrix facies, indicating that matrix facies formed from explosions of the erupting magma as well as from disaggregation and mixing of blocks. The block facies forms both hummocks and interhummock areas in the proximal part of the St. Helens avalanche deposit. At Mount St. Helens, the density of the old cone is 21% greater than the density of the avalanche deposit. Block size decreases with distance. Clast size, measured in the field and by sieving, coverages about a mean with distance, which suggests that blocks disaggregated and mixed together during transport.

Glicken, H.

1985-01-01

309

Fixture for assembling solar panels  

NASA Technical Reports Server (NTRS)

Vacuum fixture attaches array of silicon solar cells to mounting plate made of clear glass which holds and protects cells. Glass plate transmits, rather than absorbs, solar energy thus cooling cells for efficient operation. Device therefore reduces handling of cells and interconnecting conductors to one operation.

Dillard, P. A.; Fritz, W. M.

1979-01-01

310

The "Virtual" Panel: A Computerized Model for LGBT Speaker Panels  

ERIC Educational Resources Information Center

Recent societal trends indicate more tolerance for homosexuality, but prejudice remains on college campuses. Speaker panels are commonly used in classrooms as a way to educate students about sexual diversity and decrease negative attitudes toward sexual diversity. The advent of computer-delivered instruction presents a unique opportunity to

Beasley, Christopher; Torres-Harding, Susan; Pedersen, Paula J.

2012-01-01

311

EuropeanEuropean PanelPanel FederationFederation  

E-print Network

to the marketing of the so--calledcalled ""green energygreen energy"" ·· Simultaneously, the taxes on the use of fossil fuelsSimultaneously, the taxes on the use of fossil fuels increaseincrease ·· This leadsPanel IndustryIndustry Pioneer in sustainable use ofPioneer in sustainable use of resourcesresources ·· Process h

312

Space radar image of Mount Everest  

NASA Technical Reports Server (NTRS)

These are two comparison images of Mount Everest and its surroundings, along the border of Nepal and Tibet. The peak of Mount Everest, the highest elevation on Earth at 8,848 meters (29,028 feet), can be seen near the center of each image. The image at the top was acquired through thick cloud cover by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on April 16, 1994. The image on the bottom is an optical photograph taken by the Endeavour crew under clear conditions during the second flight of SIR-C/X-SAR on October 10, 1994. Both images show an area approximately 70 kilometers by 38 kilometers (43 miles by 24 miles) that is centered at 28.0 degrees north latitude and 86.9 degrees east longitude. North is toward the upper left. The colors in the radar image were obtained using the following radar channels: red represents the L-band (horizontally transmitted and received); green represents the L-band (horizontally transmitted and vertically received); blue represents the C-band (horizontally transmitted and vertically received). Radar illumination is from the top of the frame. The optical photograph has been geometrically adjusted to better match the area shown in the radar image. Many features of the Himalayan terrain are visible in both images. Snow covered areas appear white in the optical photograph while the same areas appear bright blue in the radar image. The radar image was taken in early spring and shows deep snow cover, while the optical photograph was taken in late summer and shows minimum snow cover. The curving and branching features seen in both images are glaciers. The two wavelengths and multiple polarizations of the SIR-C radar are sensitive to characteristics of the glacier surfaces that are not detected by conventional photography, such as the ice roughness, water content and stratification. For this reason, the glaciers show a variety of colors in the radar image (blue, purple, red, yellow, white) but only appear as gray or white in the photograph. Field data from other SIR-C/X-SAR test sites, such as the Alpine glaciers of Austria, are being used to help interpret data from remote regions like Mount Everest.

1995-01-01

313

Thick sandwich panel fabrication for bridge deck structure and its joint strength  

NASA Astrophysics Data System (ADS)

The purpose of this study is to evaluate the static strength of thick plate laser welded lap joint and the performance of thick sandwich panel for bridge deck structure. The strength of thin sheet laser welded lap joint whose thickness is less than 1.6 mm have been already reported, but the strength of thick plate laser welded lap joint whose thickness is more than 10 mm is not known. The authors believe this thick laser welded lap jont enable heavy industries to make a revolution on applying it for sandwich panel fabrication. Then, they have conducted mechanical tests of 10 mm + 6 mm thick laser welded lap joints to grasp their static strength. According to the obtained data, they fabricate a thick sandwich panel model of newly designed bridge deck structure for evaluation. The static lading test, cyclic loading test and collapsing test show that the thick sandwich panel has enough performance for the practical application.

Kitagawa, Akikazu; Fukuda, Naoaki; Takeda, Shinnosuke; Matsunawa, Akira

2003-03-01

314

Panel discussion II: Reconciling observations and modeling of star formation at high redshifts  

E-print Network

This is the written account of the second of two panel discussions, on "Reconciling observations and modeling of star formation at high redshifts". The chair of the panel was Pavel Kroupa, and panel members were Marc Balcells, John Beckman, Christopher Conselice, and Joseph Silk. After a short introduction by each of the panelists, panel and audience entered into a lively discussion, centered around the following six themes: the mass function of pre-stellar gas clouds; a possible top-heavy initial mass function at high redshifts versus mini-quasars as the first sources of ionization; the integrated galactic initial mass function; possible differences in specific star formation rates in disks and in massive galaxies; whether merging rates yield a wrong prediction for massive galaxies, and what is the physics behind the onset of the red sequence of galaxies; and the case of dark matter-dominated dwarf galaxies versus tidal dwarf galaxies.

Johan H. Knapen

2007-11-12

315

A visit to Mount St. Helens  

SciTech Connect

The May 18, 1980, eruption displaced roughly 2.6 km[sup 3] of rock and devastated more than 500 km[sup 2] of forest, mostly to the north of the mountain. Trees within 10--15 km of the mountain peak were burned and uprooted. Beyond that, high winds and flying debris created a blowdown zone. Up to 150 m of rock and ice covered some areas. Accumulations of ash were measured as much as 330 km from the volcano. Mud flows choked nearby rivers and streams. Two years later, the US Congress established the 44,000-hectare Mount St. Helens National Volcanic Monument. The Act essentially directed the USDA Forest Service to allow the area to recover naturally. The paper reviews what changes the ecosystem has been going through since the eruption and the lessons learned that suggest some new resource management techniques.

Meadows, D.G.

1994-04-01

316

Environmental evaluation of Surface Mounted Devices (SMD)  

SciTech Connect

We evaluated the comparative reliability of solder interconnections used for Leadless Chip Carriers (LCCs), Meaded, and flat-pack hybrid microcircuits mounted on FR-4 glass epoxy printed wiring boards (PWBs). The board assemblies, with solder attached microcircuits, were repeatedly thermal cycled from - 65 to +125{degrees}C. We recognize that this temperature range far exceeds most testing of assemblies. The purposes of these tests were to evaluate worst-case conditions and to obtain comparative information. Identical PWB assemblies, using these three component types, were subjected to both thermal shock testing (1 cycle every 42 minutes) and temperature cycle testing (1 cycle every 3 hours). The double testing evaluated the differences in stress application and evaluated the potential of replacing slow transition, expensive temperature cycle testing (which has been an industry standard for years) with the much more rapid thermal shock testing.

Barr, V.C.; Andrade, A.D.

1997-06-01

317

Mount Kilimanjaros Vanishing Snow Cap (WMS)  

NSDL National Science Digital Library

During the last few decades, the permanent snow and ice ony the summit of Mount Kilimanjaro has almost completely disappeared, at the rate of about a foot and a half of glacial ice lost per year. This loss is primarily due to increasing average annual temperatures in the region, and scientists are speculating that the glaciers could be completely gone from Kilimanjaro by the year 2015. This ice cap formed more that 11,000 years ago, and 80% of the ice fields have been lost in only the last century. The shrinkage is illustrated here in Landsat images from 1993, 2000, and 2002, with the 1993 image showing a significant ice cap and the more recent images showing only small glaciers and snow regions remaining.

Williams, James; Mitchell, Horace; Newcombe, Marte; Williams, Darrel

2005-03-02

318

Reusable vibration resistant integrated circuit mounting socket  

DOEpatents

This invention discloses a novel form of socket for integrated circuits to be mounted on printed circuit boards. The socket uses a novel contact which is fabricated out of a bimetallic strip with a shape which makes the end of the strip move laterally as temperature changes. The end of the strip forms a barb which digs into an integrated circuit lead at normal temperatures and holds it firmly in the contact, preventing loosening and open circuits from vibration. By cooling the contact containing the bimetallic strip the barb end can be made to release so that the integrated circuit lead can be removed from the socket without damage either to the lead or to the socket components.

Evans, Craig N. (Irwin, PA)

1995-01-01

319

Foot mounted inertial system for pedestrian navigation  

NASA Astrophysics Data System (ADS)

This paper discusses algorithmic concepts, design and testing of a system based on a low-cost MEMS-based inertial measurement unit (IMU) and high-sensitivity global positioning system (HSGPS) receivers for seamless personal navigation in a GPS signal degraded environment. The system developed here is mounted on a pedestrian shoe/foot and uses measurements based on the dynamics experienced by the inertial sensors on the user's foot. The IMU measurements are processed through a conventional inertial navigation system (INS) algorithm and are then integrated with HSGPS receiver measurements and dynamics derived constraint measurements using a tightly coupled integration strategy. The ability of INS to bridge the navigation solution is evaluated through field tests conducted indoors and in severely signal degraded forest environments. The specific focus is on evaluating system performance under challenging GPS conditions.

Godha, S.; Lachapelle, G.

2008-07-01

320

Rack assembly for mounting solar modules  

SciTech Connect

A rack assembly is provided for mounting solar modules over an underlying body. The rack assembly may include a plurality of rail structures that are arrangeable over the underlying body to form an overall perimeter for the rack assembly. One or more retention structures may be provided with the plurality of rail structures, where each retention structure is configured to support one or more solar modules at a given height above the underlying body. At least some of the plurality of rail structures are adapted to enable individual rail structures to be sealed over the underlying body so as to constrain air flow underneath the solar modules. Additionally, at least one of (i) one or more of the rail structures, or (ii) the one or more retention structures are adjustable so as to adapt the rack assembly to accommodate solar modules of varying forms or dimensions.

Plaisted, Joshua Reed; West, Brian

2012-09-04

321

Rack assembly for mounting solar modules  

DOEpatents

A rack assembly is provided for mounting solar modules over an underlying body. The rack assembly may include a plurality of rail structures that are arrangeable over the underlying body to form an overall perimeter for the rack assembly. One or more retention structures may be provided with the plurality of rail structures, where each retention structure is configured to support one or more solar modules at a given height above the underlying body. At least some of the plurality of rail structures are adapted to enable individual rail structures o be sealed over the underlying body so as to constrain air flow underneath the solar modules. Additionally, at least one of (i) one or more of the rail structures, or (ii) the one or more retention structures are adjustable so as to adapt the rack assembly to accommodate solar modules of varying forms or dimensions.

Plaisted, Joshua Reed (Oakland, CA); West, Brian (San Francisco, CA)

2010-12-28

322

Accurate Telescope Mount Positioning with MEMS Accelerometers  

E-print Network

This paper describes the advantages and challenges of applying microelectromechanical accelerometer systems (MEMS accelerometers) in order to attain precise, accurate and stateless positioning of telescope mounts. This provides a completely independent method from other forms of electronic, optical, mechanical or magnetic feedback or real-time astrometry. Our goal is to reach the sub-arcminute range which is well smaller than the field-of-view of conventional imaging telescope systems. Here we present how this sub-arcminute accuracy can be achieved with very cheap MEMS sensors and we also detail how our procedures can be extended in order to attain even finer measurements. In addition, our paper discusses how can a complete system design be implemented in order to be a part of a telescope control system.

Mszros, Lszl; Pl, Andrs; Cspny, Gergely

2014-01-01

323

WWW 2007 -Panel Susan Dumais  

E-print Network

it is taken File, when it is changed Email and Web, when it is seen "Person" attribute vs. contained in text. Metadata (for personal search)(for personal search) Why Rich Metadata? · People remember many attributes: Searching Personal ContentWWW Panel: Searching Personal Content TheThe PersonPerson in Personalin Personal

Dumais, Susan

324

Wood panel earth shelter construction  

Microsoft Academic Search

An earth sheltered building is described including an arch structure, the structure including footings, a floor extending between the footings and arch means extending between the footings and having a base having lower ends on the footings for defining an enclosure which is covered with earth and open at opposite ends. The arch structure consists of: joined, curved wooden panel

J. R. Berg; J. G. Loveless; W. Senkow

1986-01-01

325

Striking Panel Touch Location Detect  

Microsoft Academic Search

Recently, there are more touch panels that have been extensively used throughout the world. Due to customer input regarding improvements, we have examined the use of technology of touch products. In the market, most of touch monitors used by finger or touch pen get the electricity, capacity effect, or stop sensor signal. From the signal orientates the controller, lots of

Chin-Yu Wang; Hon-Ta Liu; Shih-Yu Shen

2012-01-01

326

Peg supported thermal insulation panel  

DOEpatents

A thermal insulation panel which is lightweight, load bearing, accommodates thermal stress, and has excellent high temperature insulation capability comprises high performance insulation between thin metal walls supported by high density, high strength glass pegs made in compliance with specified conditions of time, temperature and pressure. 2 figs.

Nowobilski, J.J.; Owens, W.J.

1985-04-30

327

High temperature be panel development  

NASA Technical Reports Server (NTRS)

Beryllium materials have been used for many aerospace applications over the years. Most of these applications have been fairly ambient environments. The possibility of fabricating beryllium panels for high temperature applications up to 1200 F is investigated. Joining alloys were reviewed, tested and evaluated for high temperature applications.

Hardesty, R.; Jensen, M.; Grant, L.

1989-01-01

328

Modeling panel antenna in NEC  

Microsoft Academic Search

The paper deals with the panel antenna modeling using NEC Win PRO v. 1.1 package. Base of antenna modeling would be wire construction. To achieve better performance and characteristics, several solutions for reflector and dipole are proposed. Antenna with best results and attributes will be compared with technical data of APX907016 RFS antenna given by producer. The challenge in the

Tihomir Pusnik; Dragan Poljak

2006-01-01

329

ASIST 2003: Part II: Panels.  

ERIC Educational Resources Information Center

Forty-six panels address topics including women in information science; users and usability; information studies; reference services; information policies; standards; interface design; information retrieval; information networks; metadata; shared access; e-commerce in libraries; knowledge organization; information science theories; digitization;

Proceedings of the ASIST Annual Meeting, 2003

2003-01-01

330

Peg supported thermal insulation panel  

DOEpatents

A thermal insulation panel which is lightweight, load bearing, accommodates thermal stress, and has excellent high temperature insulation capability comprising high performance insulation between thin metal walls supported by high density, high strength glass pegs made in compliance with specified conditions of time, temperature and pressure.

Nowobilski, Jeffert J. (Orchard Park, NY); Owens, William J. (Kenmore, NY)

1985-01-01

331

"Campus Essentials" Parent Information Panel  

E-print Network

BBB "Campus Essentials" Parent Information Panel Hosted By George "Barney" Ballinger Director Parking and Transportation Services (PTS) � Question and Answer Session Please note Parent Relations George "Barney" Ballinger at 303-492-1098 or ballinge@colorado.edu Caro Henauw at 303

Stowell, Michael

332

Static Performance of a Wing-Mounted Thrust Reverser Concept  

NASA Technical Reports Server (NTRS)

An experimental investigation was conducted in the Jet-Exit Test Facility at NASA Langley Research Center to study the static aerodynamic performance of a wing-mounted thrust reverser concept applicable to subsonic transport aircraft. This innovative engine powered thrust reverser system is designed to utilize wing-mounted flow deflectors to produce aircraft deceleration forces. Testing was conducted using a 7.9%-scale exhaust system model with a fan-to-core bypass ratio of approximately 9.0, a supercritical left-hand wing section attached via a pylon, and wing-mounted flow deflectors attached to the wing section. Geometric variations of key design parameters investigated for the wing-mounted thrust reverser concept included flow deflector angle and chord length, deflector edge fences, and the yaw mount angle of the deflector system (normal to the engine centerline or parallel to the wing trailing edge). All tests were conducted with no external flow and high pressure air was used to simulate core and fan engine exhaust flows. Test results indicate that the wing-mounted thrust reverser concept can achieve overall thrust reverser effectiveness levels competitive with (parallel mount), or better than (normal mount) a conventional cascade thrust reverser system. By removing the thrust reverser system from the nacelle, the wing-mounted concept offers the nacelle designer more options for improving nacelle aero dynamics and propulsion-airframe integration, simplifying nacelle structural designs, reducing nacelle weight, and improving engine maintenance access.

Asbury, Scott C.; Yetter, Jeffrey A.

1998-01-01

333

21 CFR 660.3 - Reference panel.  

Code of Federal Regulations, 2010 CFR

...FOR LABORATORY TESTS Antibody to Hepatitis B Surface Antigen 660.3 Reference panel. A Reference Hepatitis B Surface Antigen Panel shall...potency and specificity of Antibody to Hepatitis B Surface Antigen. [40 FR...

2010-04-01

334

Retaining Ring Fastener for Solar Panels  

NASA Technical Reports Server (NTRS)

Simple articulating linkage secures solar panels into supporting framework. Five element linkage collapses into W-shape for easy placement into framework, then expands to form rectangle of same dimensions as those of panel.

Wilson, A. H.

1983-01-01

335

76 FR 50499 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...the Office of AccessAbility, National Endowment for the Arts, 1100 Pennsylvania Avenue...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC...

2011-08-15

336

75 FR 27825 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...the Office of AccessAbility, National Endowment for the Arts, 1100 Pennsylvania Avenue...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC...

2010-05-18

337

49 CFR 845.22 - Technical panel.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Technical panel. 845.22 Section...INCIDENT HEARINGS AND REPORTS Conduct of Hearing 845.22 Technical panel. The Director...members of the Board's technical staff to participate...

2011-10-01

338

49 CFR 845.22 - Technical panel.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Technical panel. 845.22 Section...INCIDENT HEARINGS AND REPORTS Conduct of Hearing 845.22 Technical panel. The Director...members of the Board's technical staff to participate...

2010-10-01

339

49 CFR 845.22 - Technical panel.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Technical panel. 845.22 Section...INCIDENT HEARINGS AND REPORTS Conduct of Hearing 845.22 Technical panel. The Director...members of the Board's technical staff to participate...

2012-10-01

340

49 CFR 845.22 - Technical panel.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Technical panel. 845.22 Section...INCIDENT HEARINGS AND REPORTS Conduct of Hearing 845.22 Technical panel. The Director...members of the Board's technical staff to participate...

2013-10-01

341

Distribution of melt beneath Mount St Helens and Mount Adams inferred from magnetotelluric data  

NASA Astrophysics Data System (ADS)

Three prominent volcanoes that form part of the Cascade mountain range in Washington State (USA)-Mounts St Helens, Adams and Rainier-are located on the margins of a mid-crustal zone of high electrical conductivity. Interconnected melt can increase the bulk conductivity of the region containing the melt, which leads us to propose that the anomalous conductivity in this region is due to partial melt associated with the volcanism. Here we test this hypothesis by using magnetotelluric data recorded at a network of 85 locations in the area of the high-conductivity anomaly. Our data reveal that a localized zone of high conductivity beneath this volcano extends downwards to join the mid-crustal conductor. As our measurements were made during the recent period of lava extrusion at Mount St Helens, we infer that the conductivity anomaly associated with the localized zone, and by extension with the mid-crustal conductor, is caused by the presence of partial melt. Our interpretation is consistent with the crustal origin of silicic magmas erupting from Mount St Helens, and explains the distribution of seismicity observed at the time of the catastrophic eruption in 1980 (refs 9, 10).

Hill, Graham J.; Caldwell, T. Grant; Heise, Wiebke; Chertkoff, Darren G.; Bibby, Hugh M.; Burgess, Matt K.; Cull, James P.; Cas, Ray A. F.

2009-11-01

342

Distribution of melt beneath Mount St Helens and Mount Adams inferred from magnetotelluric data  

USGS Publications Warehouse

Three prominent volcanoes that form part of the Cascade mountain range in Washington State (USA)Mounts StHelens, Adams and Rainierare located on the margins of a mid-crustal zone of high electrical conductivity1,5. Interconnected melt can increase the bulk conductivity of the region containing the melt6,7, which leads us to propose that the anomalous conductivity in this region is due to partial melt associated with the volcanism. Here we test this hypothesis by using magnetotelluric data recorded at a network of 85 locations in the area of the high-conductivity anomaly. Our data reveal that a localized zone of high conductivity beneath thisvolcano extends downwards to join the mid-crustal conductor. As our measurements were made during the recent period of lava extrusion at Mount St Helens, we infer that the conductivity anomaly associated with the localized zone, and by extension with the mid-crustal conductor, is caused by the presence of partial melt. Our interpretation is consistent with the crustal origin of silicic magmas erupting from Mount St Helens8, and explains the distribution of seismicity observed at the time of the catastrophic eruption in 1980 (refs9, 10). ?? 2009 Macmillan Publishers Limited. All rights reserved.

Hill, G. J.; Caldwell, T. G.; Heise, W.; Chertkoff, D. G.; Bibby, H. M.; Burgess, M. K.; Cull, J. P.; Cas, R. A. F.

2009-01-01

343

Thermal-structural panel buckling tests  

NASA Technical Reports Server (NTRS)

The buckling characteristics of a titanium matrix composite hat-stiffened panel were experimentally examined for various combinations of thermal and mechanical loads. Panel failure was prevented by maintaining the applied loads below real-time critical buckling predictions. The test techniques used to apply the loads, minimize boundary were shown to compare well with a finite-element buckling analysis for previous panels. Comparisons between test predictions and analysis for this panel are ongoing.

Thompson, Randolph C.; Richards, W. Lance

1991-01-01

344

Lightweight composites for modular panelized construction  

NASA Astrophysics Data System (ADS)

Rapid advances in construction materials technology have enabled civil engineers to achieve impressive gains in the safety, economy, and functionality of structures built to serve the common needs of society. Modular building systems is a fast-growing modern, form of construction gaining recognition for its increased efficiency and ability to apply modern technology to the needs of the market place. In the modular construction technique, a single structural panel can perform a number of functions such as providing thermal insulation, vibration damping, and structural strength. These multifunctional panels can be prefabricated in a manufacturing facility and then transferred to the construction site. A system that uses prefabricated panels for construction is called a "panelized construction system". This study focuses on the development of pre-cast, lightweight, multifunctional sandwich composite panels to be used for panelized construction. Two thermoplastic composite panels are proposed in this study, namely Composite Structural Insulated Panels (CSIPs) for exterior walls, floors and roofs, and Open Core Sandwich composite for multifunctional interior walls of a structure. Special manufacturing techniques are developed for manufacturing these panels. The structural behavior of these panels is analyzed based on various building design codes. Detailed descriptions of the design, cost analysis, manufacturing, finite element modeling and structural testing of these proposed panels are included in this study in the of form five peer-reviewed journal articles. The structural testing of the proposed panels involved in this study included flexural testing, axial compression testing, and low and high velocity impact testing. Based on the current study, the proposed CSIP wall and floor panels were found satisfactory, based on building design codes ASCE-7-05 and ACI-318-05. Joining techniques are proposed in this study for connecting the precast panels on the construction site. Keywords: Modular panelized construction, sandwich composites, composite structural insulated panels (CSIPs).

Vaidya, Amol S.

345

Indentation failure behavior of honeycomb sandwich panels  

Microsoft Academic Search

The failure behavior of simply supported honeycomb sandwich panels subjected to indentation loading on the top skin has been studied. A plate-on-elastic-foundation approach based on distributed load and panel-specific considerations (finite thickness and transverse shear) is developed to analyze the panel stress distribution. Panels with various glass-fibre\\/epoxy skins and aramid cores are analyzed by using this approach together with the

Shaw M. Lee; Thomas K. Tsotsis

2000-01-01

346

Submerged photovoltaic solar panel: SP2  

Microsoft Academic Search

The behavior of a photovoltaic (PV) panel submerged in water is studied. A sizeable increase of electric power output is found for shallow water. Experiments have been carried out for single crystalline silicon panels. Results are discussed and the increase in efficiency is investigated and understood. Operating problems are analyzed and the advantages of using underwater solar panels are pointed

M. Rosa-Clot; P. Rosa-Clot; G. M. Tina; P. F. Scandura

2010-01-01

347

Thermic diode solar panels - A brief summary  

Microsoft Academic Search

Thermic diode solar panels for use in heating buildings are described. Each panel combines all the necessary elements of a complete solar energy system (collector, controls, storage, heat exchangers and ducting) into a four by eight foot module. No moving parts or external power are involved. Thermic panels are also compared to other solar heating systems, such as air heating

S. Buckley

1976-01-01

348

Solar energy collecting panel and apparatus  

Microsoft Academic Search

The present invention relates to a solar energy collecting panel and an apparatus for utilizing of the panel. The collecting panel comprises a first layer of heat absorbing material. A fiber mat for repeatedly transporting fluid by both surface tension and capillary action to a first surface of the heat absorbing layer is arranged to intimately contact the first surface.

Luebke

1983-01-01

349

38 CFR 19.11 - Reconsideration panel.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Reconsideration panel. 19.11 Section 19.11 Pensions...Appeals 19.11 Reconsideration panel. (a) Assignment of Members. When...is allowed, the Chairman will assign a panel of three or more Members of the...

2013-07-01

350

38 CFR 19.11 - Reconsideration panel.  

...2014-07-01 false Reconsideration panel. 19.11 Section 19.11 Pensions...Appeals 19.11 Reconsideration panel. (a) Assignment of Members. When...is allowed, the Chairman will assign a panel of three or more Members of the...

2014-07-01

351

38 CFR 19.11 - Reconsideration panel.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Reconsideration panel. 19.11 Section 19.11 Pensions...Appeals 19.11 Reconsideration panel. (a) Assignment of Members. When...is allowed, the Chairman will assign a panel of three or more Members of the...

2011-07-01

352

Report of FESAC Panel January 1998  

E-print Network

Report of FESAC Panel January 1998 The DOE Office of Energy Research chartered through the Fusion Energy Sciences Advisory Committee (FESAC) a panel to "address the topic of U. S. participation period between the EDA and construction." (Attachment 2: DOE Expanded Charge, May 1997). This panel has

353

38 CFR 19.11 - Reconsideration panel.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Reconsideration panel. 19.11 Section 19.11 Pensions...Appeals 19.11 Reconsideration panel. (a) Assignment of Members. When...is allowed, the Chairman will assign a panel of three or more Members of the...

2010-07-01

354

32 CFR 724.103 - NDRB panel.  

...2014-07-01 2014-07-01 false NDRB panel. 724.103 Section 724.103 National...BOARD Definitions 724.103 NDRB panel. An element of the NDRB, consisting...discharges. In plenary review session, an NDRB panel acts with the authority delegated by...

2014-07-01

355

38 CFR 19.11 - Reconsideration panel.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Reconsideration panel. 19.11 Section 19.11 Pensions...Appeals 19.11 Reconsideration panel. (a) Assignment of Members. When...is allowed, the Chairman will assign a panel of three or more Members of the...

2012-07-01

356

Thomas Kaiser Panel Statements UWB Workshop  

E-print Network

DP caused by the antenna pattern TX RX Reflector #12;Slide 8 Thomas Kaiser Panel Statements ­ UWB antennas 1. Direct path arrives first #12;Slide 10 Thomas Kaiser Panel Statements ­ UWB Workshop Santa Thomas Kaiser Panel Statements ­ UWB Workshop Santa Monica, April 11-12, 2006 Bowtie Antenna Simulation

Southern California, University of

357

Fully Modified OLS for Heterogeneous Cointegrated Panels  

Microsoft Academic Search

This chapter uses fully modified OLS principles to develop new methods for estimating and testing hypotheses for cointegrating vectors in dynamic panels in a manner that is consistent with the degree of cross sectional heterogeneity that has been permitted in recent panel unit root and panel cointegration studies. The asymptotic properties of various estimators are compared based on pooling along

Peter Pedroni

2000-01-01

358

X-38 Mounted on Pylon of B-52 Mothership  

NASA Technical Reports Server (NTRS)

A close-up view of the X-38 research vehicle mounted under the wing of the B-52 mothership prior to a 1997 test flight. The X-38, which was designed to help develop technology for an emergency crew return vehicle (CRV) for the International Space Station, is one of many research vehicles the B-52 has carried aloft over the past 40 years. NASA B-52, Tail Number 008, is an air launch carrier aircraft, 'mothership,' as well as a research aircraft platform that has been used on a variety of research projects. The aircraft, a 'B' model built in 1952 and first flown on June 11, 1955, is the oldest B-52 in flying status and has been used on some of the most significant research projects in aerospace history. Some of the significant projects supported by B-52 008 include the X-15, the lifting bodies, HiMAT (highly maneuverable aircraft technology), Pegasus, validation of parachute systems developed for the space shuttle program (solid-rocket-booster recovery system and the orbiter drag chute system), and the X-38. The B-52 served as the launch vehicle on 106 X-15 flights and flew a total of 159 captive-carry and launch missions in support of that program from June 1959 to October 1968. Information gained from the highly successful X-15 program contributed to the Mercury, Gemini, and Apollo human spaceflight programs as well as space shuttle development. Between 1966 and 1975, the B-52 served as the launch aircraft for 127 of the 144 wingless lifting body flights. In the 1970s and 1980s, the B-52 was the launch aircraft for several aircraft at what is now the Dryden Flight Research Center, Edwards, California, to study spin-stall, high-angle-of attack, and maneuvering characteristics. These included the 3/8-scale F-15/spin research vehicle (SRV), the HiMAT (Highly Maneuverable Aircraft Technology) research vehicle, and the DAST (drones for aerodynamic and structural testing). The aircraft supported the development of parachute recovery systems used to recover the space shuttle solid rocket booster casings. It also supported eight orbiter (space shuttle) drag chute tests in 1990. In addition, the B-52 served as the air launch platform for the first six Pegasus space boosters. During its many years of service, the B-52 has undergone several modifications. The first major modification was made by North American Aviation (now part of Boeing) in support of the X-15 program. This involved creating a launch-panel-operator station for monitoring the status of the test vehicle being carried, cutting a large notch in the right inboard wing flap to accommodate the vertical tail of the X-15 aircraft, and installing a wing pylon that enables the B-52 to carry research vehicles and test articles to be air-launched/dropped. Located on the right wing, between the inboard engine pylon and the fuselage, this wing pylon was subjected to extensive testing prior to its use. For each test vehicle the B-52 carried, minor changes were made to the launch-panel operator's station. Built originally by the Boeing Company, the NASA B-52 is powered by eight Pratt & Whitney J57-19 turbojet engines, each of which produce 12,000 pounds of thrust. The aircraft's normal launch speed has been Mach 0.8 (about 530 miles per hour) and its normal drop altitude has been 40,000 to 45,000 feet. It is 156 feet long and has a wing span of 185 feet. The heaviest load it has carried was the No. 2 X-15 aircraft at 53,100 pounds. Project manager for the aircraft is Roy Bryant.

1997-01-01

359

Experimental and finite element investigation of the buckling characteristics of a beaded skin panel for a hypersonic aircraft. Ph.D. Thesis. Final Report  

NASA Technical Reports Server (NTRS)

As part of NASA's continuing research into hypersonics and 85 square foot hypersonic wing test section of a proposed hypersonic research airplane was laboratory tested. The project reported on in this paper has carried the hypersonic wing test structure project one step further by testing a single beaded panel to failure. The primary interest was focused upon the buckling characteristics of the panel under pure compression with boundary conditions similar to those found in a wing mounted condition. Three primary phases of analysis are included in the report. These phases include: experimental testing of the beaded panel to failure; finite element structural analysis of the beaded panel with the computer program NASTRAN; a summary of the semiclassical buckling equations for the beaded panel under purely compressive loads. Comparisons between each of the analysis methods are also included.

Siegel, W. H.

1978-01-01

360

Overview of Mount Washington Icing Sensors Project  

NASA Technical Reports Server (NTRS)

NASA, the FAA, the Department of Defense, the National Center for Atmospheric Research and NOAA are developing techniques for retrieving cloud microphysical properties from a variety of remote sensing technologies. The intent is to predict aircraft icing conditions ahead of aircraft. The Mount Washington Icing Sensors Project MWISP), conducted in April, 1999 at Mt. Washington, NH, was organized to evaluate technologies for the prediction of icing conditions ahead of aircraft in a natural environment, and to characterize icing cloud and drizzle environments. April was selected for operations because the Summit is typically in cloud, generally has frequent freezing precipitation in spring, and the clouds have high liquid water contents. Remote sensing equipment, consisting of radars, radiometers and a lidar, was placed at the base of the mountain, and probes measuring cloud particles, and a radiometer, were operated from the Summit. NASA s Twin Otter research aircraft also conducted six missions over the site. Operations spanned the entire month of April, which was dominated by wrap-around moisture from a low pressure center stalled off the coast of Labrador providing persistent upslope clouds with relatively high liquid water contents and mixed phase conditions. Preliminary assessments indicate excellent results from the lidar, radar polarimetry, radiosondes and summit and aircraft measurements.

Ryerson, Charles C.; Politovich, Marcia K.; Rancourt, Kenneth L.; Koenig, George G.; Reinking, Roger F.; Miller, Dean R.

2003-01-01

361

Examiner's finger-mounted fetal tissue oximetry  

NASA Astrophysics Data System (ADS)

The best way to assess fetal condition is to observe the oxygen status of the fetus (as well as to assess the condition of infants, children, and adults). Previously, several fetal oximeters have been developed; however, no instrument has been utilized in clinical practice because of the low-capturing rate of the fetal oxygen saturation. To overcome the problem, we developed a doctor's finger-mounted fetal tissue oximeter, whose sensor volume is one hundredth of the conventional one. Additionally, we prepared transparent gloves. The calculation algorithm of the hemoglobin concentration was derived from the light propagation analysis based on the transport theory. We measured neonatal and fetal oxygen saturation (StO2) with the new tissue oximeter. Neonatal StO was measured at any position of the head regardless of amount of hair. Neonatal StO was found to be around 77%. Fetal StO was detected in every position of the fetal head during labor regardless of the presence of labor pain. Fetal StO without labor pain was around 70% in the first stage of labor and around 60% in the second stage of labor. We concluded that our new concept of fetal tissue oximetry would be useful for detecting fetal StO in any condition of the fetus.

Kanayama, Naohiro; Niwayama, Masatsugu

2014-06-01

362

Evaluation of Helmet Mounted Display Alerting Symbology  

NASA Technical Reports Server (NTRS)

Proposed helicopter helmet mounted displays will be used to alert the pilot to a variety of conditions, from threats to equipment problems. The present research was performed under the NASA Safe All-weather Flight Operations Research (SAFOR) program supported by a joint Army/NASA research agreement. The purpose of the research was to examine ways to optimize the alerting effectiveness of helmet display symbology. The research used two approaches to increasing the effectiveness of alerts. One was to increase the ability of the alert to attract attention by using the entire display surface. The other was to include information about the required response in the alert itself. The investigation was conducted using the NASA Ames Research Center's six-degree-of-freedom vertical motion simulator (VMS) with a rotorcraft cockpit. Helmet display symbology was based on the AH-64's pilot night vision system (PNVS), cruise mode symbology. A standardized mission was developed, that consisted of 11 legs. The mission included four tasks, which allowed variation in the frequency of alerts. The general trend in the data points to a small benefit from both the full-screen alert and the partial information alert.

DeMaio, Joe; Rutkowski, Michael (Technical Monitor)

2000-01-01

363

Flush mounting of thin film sensors  

NASA Technical Reports Server (NTRS)

Flush mounting of a sensor on a surface is provided by first forming a recessed area on the surface. Next, an adhesive bonding mixture is introduced into the recessed area. The adhesive bonding mixture is chosen to provide thermal expansion matching with the surface surrounding the recessed area. A strip of high performance polymeric tape is provided, with the sensor attached to the underside thereof, and the tape is positioned over the recessed area so that it acts as a carrier of the sensor. A shim having flexibility so that it will conform to the surface surrounding the recessed area is placed over the tape, and a vacuum pad is placed over the shim. The area above the surface is then evacuated while holding the sensor flush with the surface during curing of the adhesive bonding mixture. After such curing, the pad, shim, and tape are removed from the sensor, electrical connections for the sensor are provided, after which the remaining space in the recessed area is filled with a polymeric foam.

Moore, Thomas C., Sr. (inventor)

1992-01-01

364

Electro-optic component mounting device  

DOEpatents

A technique is provided for integrally mounting a device such as an electro-optic device in a transmission line to avoid series resonant effects. A center conductor of the transmission line has an aperture formed therein for receiving the device. The aperture splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface which is spaced apart from the center conductor with a dielectric material. One set of electrodes formed on the surface of the electro-optic device is directly connected to the center conductor and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface. The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage formed therein for passage of optical signals to an electro-optic device. 10 figs.

Gruchalla, M.E.

1994-09-13

365

Potential climate impact of Mount Pinatubo eruption  

NASA Technical Reports Server (NTRS)

The GISS global-climate model is used to make a preliminary estimate of Mount Pinatubo's climate impact. Assuming the aerosol optical depth is nearly twice as great as for the 1982 El Chichon eruption, the model forecasts a dramatic but temporary break in recent global warming trends. The simulations indicate that Pinatubo occurred too late in the year to prevent 1991 from becoming one of the warmest years in instrumental records, but intense aerosol cooling is predicted to begin late in 1991 and to maximize late in 1992. The predicted cooling is sufficiently large that by mid 1992 it should even overwhelm global warming associated with an El Nino that appears to be developing, but the El Nino could shift the time of minimum global temperature into 1993. The model predicts a return to record warm levels in the later 1990s. The effect is estimated of the predicted global cooling on such practical matters as the severity of the coming Soviet winter and the dates of cherry blossoming next spring.

Hansen, James; Lacis, Andrew; Ruedy, Reto; Sato, Makiko

1992-01-01

366

Observational Results from Mount Stony Brook Observatory  

NASA Astrophysics Data System (ADS)

The Mount Stony Brook Observatory consists of a recently upgraded 0.35m Schmidt-Cassegrain telescope instrumented with several CCD cameras. Mt. Stony Brook, located on the Stony Brook campus, in a maritime environment approximately 40 miles East of New York City suffers from poor seeing and a bright sky. However, it offers one major advantage over larger telescopes: availability. We will describe the telescope and instrumentation. We currently use the observatory mainly for determining stellar rotational periods. We will present the results of observations of W Ursae Majoris, an eclipsing contact binary, and FK Comae, a rapidly rotating variable, which confirm our photometric accuracy as well as our period sensitivity. In addition we will be present a new rotational period for the naked T Tauri star TAP 26. TAP 26 was monitored for over 5 months in an attempt to confirm either the 2.51 day period (Bouvier et al. 1993) or the 13 hour period determined by Prosser et al. (1994). We report a 0(d) .715 rotational period and discuss which of the 3 reported periods is likely to be correct.

Petreshock, J.; Wolk, S.; Adams, N.; Walter, F.

1995-03-01

367

Helmet-Mounted Display Design Guide  

NASA Technical Reports Server (NTRS)

Helmet Mounted Displays (HMDs) present flight, navigation, and weapon information in the pilot's line of sight. The HMD was developed to allow the pilot to retain aircraft and weapon information while looking off boresight. This document reviews current state of the art in HMDs and presents a design guide for the HMD engineer in identifying several critical HMD issues: symbol stabilization, inadequate definitions, undefined symbol drive laws, helmet considerations, and Field Of View (FOV) vs. resolution tradeoff requirements. In particular, display latency is a key issue for HMDs. In addition to requiring further experimental studies, it impacts the definition and control law issues. Symbol stabilization is also critical. In the case of the Apache helicopter, the lack of compensation for pilot head motion creates excessive workload during hovering and Nap Of the Earth (NOE) flight. This translates into excessive training requirements. There is no agreed upon set of definitions or descriptions for how HMD symbols are driven to compensate for pilot head motion. A set of definitions is proposed to address this. There are several specific areas where simulation and flight experiments are needed: development of hover and NOE symbologies which compensate for pilot head movement; display latency and sampling, and the tradeoff between FOV, sensor resolution and symbology.

Newman, Richard L.; Greeley, Kevin W.

1997-01-01

368

Examiner's finger-mounted fetal tissue oximetry.  

PubMed

The best way to assess fetal condition is to observe the oxygen status of the fetus (as well as to assess the condition of infants, children, and adults). Previously, several fetal oximeters have been developed; however, no instrument has been utilized in clinical practice because of the low-capturing rate of the fetal oxygen saturation. To overcome the problem, we developed a doctor's finger-mounted fetal tissue oximeter, whose sensor volume is one hundredth of the conventional one. Additionally, we prepared transparent gloves. The calculation algorithm of the hemoglobin concentration was derived from the light propagation analysis based on the transport theory. We measured neonatal and fetal oxygen saturation (StO?) with the new tissue oximeter. Neonatal StO? was measured at any position of the head regardless of amount of hair. Neonatal StO? was found to be around 77%. Fetal StO? was detected in every position of the fetal head during labor regardless of the presence of labor pain. Fetal StO? without labor pain was around 70% in the first stage of labor and around 60% in the second stage of labor. We concluded that our new concept of fetal tissue oximetry would be useful for detecting fetal StO? in any condition of the fetus. PMID:24961914

Kanayama, Naohiro; Niwayama, Masatsugu

2014-06-01

369

ASAP Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This is the First Quarterly Report for the newly reconstituted Aerospace Safety Advisory Panel (ASAP). The NASA Administrator rechartered the Panel on November 18,2003, to provide an independent, vigilant, and long-term oversight of NASA's safety policies and programs well beyond Return to Flight of the Space Shuttle. The charter was revised to be consistent with the original intent of Congress in enacting the statute establishing ASAP in 1967 to focus on NASA's safety and quality systems, including industrial and systems safety, risk-management and trend analysis, and the management of these activities.The charter also was revised to provide more timely feedback to NASA by requiring quarterly rather than annual reports, and by requiring ASAP to perform special assessments with immediate feedback to NASA. ASAP was positioned to help institutionalize the safety culture of NASA in the post- Stafford-Covey Return to Flight environment.

2004-01-01

370

Mount Pinatubo, Philippine Islands as seen from STS-59  

NASA Technical Reports Server (NTRS)

View of Mount Pinatubo, Philippine Islands. Subic Bay is at the lower left corner, with the sea at the left and Clark Air Force Base (abandoned after the eruption) is to the lower right of the volcano. A turquoise lake occupies the caldera just below the center of the photograph. Mount Pinatubo erupted in June, 1991 after several hundred years of quiet.

1994-01-01

371

The CF6 jet engine performance improvement: New front mount  

NASA Technical Reports Server (NTRS)

The New Front Mount was evaluated in component tests including stress, deflection/distortion and fatigue tests. The test results demonstrated a performance improvement of 0.1% in cruise sfc, 16% in compressor stall margin and 10% in compressor stator angle margin. The New Front Mount hardware successfully completed 35,000 simulated flight cycles endurance testing.

Fasching, W. A.

1979-01-01

372

SO2 flux measurements at Mount Etna (Sicily)  

Microsoft Academic Search

Since 1987, over 220 measurements of the SO2 flux at Mount Etna have been carried out using a correlation spectrometer (COSPEC) with different measuring techniques (mainly with COSPEC mounted on ground-based vehicle). This paper reports and analyzes the data obtained between October 1987 and December 1991. During this period, three distinct time intervals characterized by particular SO2 emission patterns were

Tommaso Caltabiano; Romolo Romano; Gennaro Budetta

1994-01-01

373

A Modal Analysis of Lamellar Diffraction Gratings in Conical Mountings  

Microsoft Academic Search

A rigorous modal analysis of lamellar gratings, i.e. gratings having rectangular grooves, in conical mountings is presented. It is an extension of the analysis of Botten et al. which considered non-conical mountings. A key step in the extension is a decomposition of the electromagnetic field in the grating region into two orthogonal components. A computer program implementing this extended modal

Lifeng Li

1993-01-01

374

Mosses, Liverworts and Hornworts of Mount Canobolas, New South Wales  

Microsoft Academic Search

A surprising number of endemic species of plants and animals are found within Mount Canobolas State Recreation Area (3321' S, 14859' E, 1395 m asl) 15 km SW of Orange in the Central West of New South Wales. During this survey of bryophytes on Mount Canobolas, 75 species, including 60 moss species, 13 liverwort species and two hornwort species were

Alison Downing; Ron Oldfield; Eleanor Fairbairn-Wilson

375

View looking northeast across the east end of West Mount ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

View looking northeast across the east end of West Mount Vernon Place; view includes the lion statue (also designed by Antoine Louis-Barye) as well as the Washington Apartments and Methodist Church in the background - Mount Vernon Place, Charles & Monument Streets, Baltimore, Independent City, MD

376

Mirror mount bonding process for the COSTAR and STIS programs  

Microsoft Academic Search

This paper describes the process and methods to bond the corrective optics space telescope axial replacement and space telescope imaging spectrograph optics to their mounts. The optics on the two programs were all fabricated to .01 waves rms surface figure. These high quality optics for the Hubble Space Telescope required extreme care to mount. Since they must operate down to

Victor A. Buzzetta

1996-01-01

377

Maintenance Procedure Display: Head Mounted Display (HMD) Evaluations  

NASA Technical Reports Server (NTRS)

A viewgraph presentation describing maintenance procedures for head mounted displays is shown. The topics include: 1) Study Goals; 2) Near Eye Displays (HMDs); 3) Design; 4) Phase I-Evaluation Methods; 5) Phase 1 Results; 6) Improved HMD Mounting; 7) Phase 2 -Evaluation Methods; 8) Phase 2 Preliminary Results; and 9) Next Steps.

Whitmore, Milrian; Litaker, Harry L., Jr.; Solem, Jody A.; Holden, Kritina L.; Hoffman, Ronald R.

2007-01-01

378

Flat Panel Vacuum Thermal Insulation  

Microsoft Academic Search

Evacuated mats of glass fiber made up of fibers of proper size and orientation are capable of supporting a compressive mechanical loading of at least one atmosphere and yet maintain a thermal conductivity of less than 10 microcalories?cmC sec. The use of such a glass fiber mat as a filler makes possible an evacuated flat-panel thermal insulation which is comparable

H. M. Strong; F. P. Bundy; H. P. Bovenkerk

1960-01-01

379

5 CFR 2471.11 - Final action by the Panel.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Final action by the Panel. 2471.11 Section 2471.11 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES OF THE PANEL 2471.11...

2013-01-01

380

5 CFR 9701.708 - Mandatory Removal Panel.  

...2014-01-01 false Mandatory Removal Panel. 9701.708 Section 9701.708 Administrative...Appeals 9701.708 Mandatory Removal Panel. (a) Composition. (1) The Mandatory Review Panel is a standing panel composed of...

2014-01-01

381

5 CFR 2471.11 - Final action by the Panel.  

... 2014-01-01 false Final action by the Panel. 2471.11 Section 2471.11 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES OF THE PANEL 2471.11...

2014-01-01

382

5 CFR 2471.11 - Final action by the Panel.  

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Final action by the Panel. 2471.11 Section 2471.11 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES OF THE PANEL 2471.11...

2010-01-01

383

38 CFR 21.60 - Vocational Rehabilitation Panel.  

...2014-07-01 false Vocational Rehabilitation Panel. 21.60 Section 21.60 Pensions...C. Chapter 31 Vocational Rehabilitation Panel 21.60 Vocational Rehabilitation Panel. (a) Establishment of the Panel. A...

2014-07-01

384

22 CFR 1471.1 - Request for Panel consideration.  

...2014-04-01 2014-04-01 false Request for Panel consideration. 1471.1 Section 1471.1...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.1...

2014-04-01

385

22 CFR 1471.1 - Request for Panel consideration.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 2009-04-01 true Request for Panel consideration. 1471.1 Section 1471.1...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.1...

2011-04-01

386

5 CFR 9701.708 - Mandatory Removal Panel.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Mandatory Removal Panel. 9701.708 Section 9701.708 Administrative...Appeals 9701.708 Mandatory Removal Panel. (a) Composition. (1) The Mandatory Review Panel is a standing panel composed of...

2012-01-01

387

5 CFR 2471.11 - Final action by the Panel.  

Code of Federal Regulations, 2011 CFR

... 2011-01-01 false Final action by the Panel. 2471.11 Section 2471.11 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES OF THE PANEL 2471.11...

2011-01-01

388

22 CFR 1471.10 - Final action by the Panel.  

... 2014-04-01 false Final action by the Panel. 1471.10 Section 1471.10 Foreign Relations...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.10...

2014-04-01

389

5 CFR 9701.708 - Mandatory Removal Panel.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Mandatory Removal Panel. 9701.708 Section 9701.708 Administrative...Appeals 9701.708 Mandatory Removal Panel. (a) Composition. (1) The Mandatory Review Panel is a standing panel composed of...

2011-01-01

390

22 CFR 1471.1 - Request for Panel consideration.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 2009-04-01 true Request for Panel consideration. 1471.1 Section 1471.1...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.1...

2012-04-01

391

22 CFR 1471.10 - Final action by the Panel.  

Code of Federal Regulations, 2012 CFR

... 2009-04-01 true Final action by the Panel. 1471.10 Section 1471.10 Foreign Relations...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.10...

2012-04-01

392

5 CFR 2471.11 - Final action by the Panel.  

Code of Federal Regulations, 2012 CFR

... 2012-01-01 false Final action by the Panel. 2471.11 Section 2471.11 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL PROCEDURES OF THE PANEL 2471.11...

2012-01-01

393

22 CFR 1471.10 - Final action by the Panel.  

Code of Federal Regulations, 2013 CFR

... 2009-04-01 true Final action by the Panel. 1471.10 Section 1471.10 Foreign Relations...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.10...

2013-04-01

394

42 CFR 403.220 - Supplemental Health Insurance Panel.  

Code of Federal Regulations, 2013 CFR

... false Supplemental Health Insurance Panel. 403.220 Section 403.220 Public...403.220 Supplemental Health Insurance Panel. (a) Membership. The Supplemental Health Insurance Panel (Panel) consists of (1) The...

2013-10-01

395

22 CFR 1471.10 - Final action by the Panel.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 true Final action by the Panel. 1471.10 Section 1471.10 Foreign Relations...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.10...

2010-04-01

396

42 CFR 403.220 - Supplemental Health Insurance Panel.  

Code of Federal Regulations, 2011 CFR

... false Supplemental Health Insurance Panel. 403.220 Section 403.220 Public...403.220 Supplemental Health Insurance Panel. (a) Membership. The Supplemental Health Insurance Panel (Panel) consists of (1) The...

2011-10-01

397

22 CFR 1471.1 - Request for Panel consideration.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2009-04-01 true Request for Panel consideration. 1471.1 Section 1471.1...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.1...

2013-04-01

398

22 CFR 1471.1 - Request for Panel consideration.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 true Request for Panel consideration. 1471.1 Section 1471.1...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.1...

2010-04-01

399

42 CFR 403.220 - Supplemental Health Insurance Panel.  

Code of Federal Regulations, 2012 CFR

... false Supplemental Health Insurance Panel. 403.220 Section 403.220 Public...403.220 Supplemental Health Insurance Panel. (a) Membership. The Supplemental Health Insurance Panel (Panel) consists of (1) The...

2012-10-01

400

22 CFR 1471.10 - Final action by the Panel.  

Code of Federal Regulations, 2011 CFR

... 2009-04-01 true Final action by the Panel. 1471.10 Section 1471.10 Foreign Relations...AUTHORITY; AND THE FOREIGN SERVICE IMPASSE DISPUTES PANEL FOREIGN SERVICE IMPASSE DISPUTES PANEL PROCEDURES OF THE PANEL 1471.10...

2011-04-01

401

5 CFR 9701.708 - Mandatory Removal Panel.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Mandatory Removal Panel. 9701.708 Section 9701.708 Administrative...Appeals 9701.708 Mandatory Removal Panel. (a) Composition. (1) The Mandatory Review Panel is a standing panel composed of...

2013-01-01

402

Remote, mobile telemedicine: the satellite transmission of medical data from Mount Logan.  

PubMed

The purpose of this investigation was to demonstrate the potential of remote, mobile telemedicine during a four-week, high-altitude mountaineering expedition to Mount Logan, Canada's highest summit. Using a mobile satellite terminal and a laptop computer (both powered by a photovoltaic solar panel), ECG tracings and blood pressure measurements, in addition to colour images, short-segment video and audio clips were transmitted during the course of the ascent. The data were transmitted via a mobile communications satellite to a ground station in Ottawa, a distance of over 4000 km. The data were then transferred to the public switched data network and delivered to the University of Ottawa Heart Institute for analysis. Similarly, data were transmitted from the ground station to the expedition team on Mount Logan throughout the ascent. Using this technique, medical diagnosis and emergency care can be facilitated in extreme and isolated locations lacking a telecommunications infrastructure. Such technology has applications in developing countries, disaster response efforts, remote civilian and military operations, and in space operations. PMID:9218396

Otto, C; Pipe, A

1997-01-01

403

Measurements of slope distances and vertical angles at Mount Baker and Mount Rainier, Washington, Mount Hood and Crater Lake, Oregon, and Mount Shasta and Lassen Peak, California, 1980-1984  

USGS Publications Warehouse

Personnel of the U.S.Geological Survey's Cascades Volcano Observatory established trilateration networks at Mount Baker, Mount Rainier, Mount Hood, Crater Lake, Mount Shasta, and Lassen Peak in 1980-1984. These networks are capable of detecting changes in slope distance of several centimeters or more. The networks were established to provide baseline information on potentially active volcanoes and were designed along guidelines found useful at Mount St. Helens. Periodic reoccupation of the networks is planned as part of the overall monitoring program of Cascades volcanoes. Methodology, slope distance and vertical angle data, maps of the networks, and benchmark descriptions are presented in this report. Written benchmark descriptions are augmented by photographs, which we have found by experience to very useful in relocating the marks. All repeat measurements at the six volcanoes are probably within measurement error.

Chadwick, W.W.

1985-01-01

404

Structural and Acoustic Numerical Modeling of a Curved Composite Honeycomb Panel  

NASA Technical Reports Server (NTRS)

The finite and boundary element modeling of the curved section of a composite honeycomb aircraft fuselage sidewall was validated for both structural response and acoustic radiation. The curved panel was modeled in the pre-processor MSC/PATRAN. Geometry models of the curved panel were constructed based on the physical dimensions of the test article. Material properties were obtained from the panel manufacturer. Finite element models were developed to predict the modal parameters for free and supported panel boundary conditions up to a frequency of 600 Hz. Free boundary conditions were simulated by providing soft foam support under the four comers of the panel or by suspending the panel from elastic bands. Supported boundary conditions were obtained by clamping the panel between plastic tubing seated in grooves along the perimeter of a stiff and heavy frame. The frame was installed in the transmission loss window of the Structural Acoustic Loads and Transmission (SALT) facility at NASA Langley Research Center. The structural response of the curved panel due to point force excitation was predicted using MSC/NASTRAN and the radiated sound was computed with COMET/Acoustics. The predictions were compared with the results from experimental modal surveys and forced response tests on the fuselage panel. The finite element models were refined and updated to provide optimum comparison with the measured modal data. Excellent agreement was obtained between the numerical and experimental modal data for the free as well as for the supported boundary conditions. Frequency response functions (FRF) were computed relating the input force excitation at one panel location to the surface acceleration response at five panel locations. Frequency response functions were measured at the same locations on the test specimen and were compared with the calculated FRF values. Good agreement was obtained for the real and imaginary parts of the transfer functions when modal participation was allowed up to 3000 Hz. The validated finite element model was used to predict the surface velocities due to the point force excitation. Good agreement was obtained between the spatial characteristics of the predicted and measured surface velocities. The measured velocity data were input into the acoustic boundary element code to compute the sound radiated by the panel. The predicted sound pressure levels in the far-field of the panel agreed well with the sound pressure levels measured at the same location.

Grosveld, Ferdinand W.; Buehrle, Ralph D.; Robinson, Jay H.

2001-01-01

405

Wrinkling Prevention Methods for Sandwich Panel Structure  

NASA Astrophysics Data System (ADS)

In this paper, we proposed a method for preventing the wrinkling of the facings of a sandwich panel whose outer and inner facings were at different temperatures. By using this method, the wrinkling of the outer facing of a sandwich panel structure, such as a sandwich panel refrigerator box, could be prevented. In order to prevent the facings of the structure from wrinkling, it was necessary to determine the wrinkling strength using a compressive test, and to reduce the thermal stress of the sandwich panel structure to less than the wrinkling strength. It was observed that a sandwich panel structure with slits in the facing reduced the thermal stress. In this study, we used sandwich panel containers to examine whether this proposed method could prevent a sandwich panel from wrinkling.

Dahara, Koichiro; Sanmaru, Kazuya; Yano, Toshihiro; Noguchi, Hiroshi

406

78 FR 41937 - Joint Meeting of the Gastroenterology-Urology Panel and the Radiological Devices Panel of the...  

Federal Register 2010, 2011, 2012, 2013

...FDA-2013-N-0816] Joint Meeting of the Gastroenterology-Urology Panel and the Radiological Devices Panel of the Medical Devices...open to the public. Name of Committee: Gastroenterology-Urology Panel and Radiological Devices Panel of the Medical...

2013-07-12

407

Gravity Probe B Detector Mount Assembly  

NASA Technical Reports Server (NTRS)

In this photo, the Gravity Probe B (GP-B) detector mount assembly is shown in comparison to the size of a dime. The assembly is used to detect exactly how much starlight is coming through different beams from the beam splitter in the telescope. The measurements from the tiny chips inside are what keeps GP-B aimed at the guide star. The GP-B is the relativity experiment developed at Stanford University to test two extraordinary predictions of Albert Einstein's general theory of relativity. The experiment will measure, very precisely, the expected tiny changes in the direction of the spin axes of four gyroscopes contained in an Earth-orbiting satellite at a 400-mile altitude. So free are the gyroscopes from disturbance that they will provide an almost perfect space-time reference system. They will measure how space and time are very slightly warped by the presence of the Earth, and, more profoundly, how the Earth's rotation very slightly drags space-time around with it. These effects, though small for the Earth, have far-reaching implications for the nature of matter and the structure of the Universe. GP-B is among the most thoroughly researched programs ever undertaken by NASA. This is the story of a scientific quest in which physicists and engineers have collaborated closely over many years. Inspired by their quest, they have invented a whole range of technologies that are already enlivening other branches of science and engineering. Launched April 20, 2004 , the GP-B program was managed for NASA by the Marshall Space Flight Center. Development of the GP-B is the responsibility of Stanford University along with major subcontractor Lockheed Martin Corporation. (Image credit to Paul Ehrensberger, Stanford University.)

2004-01-01

408

A novel triple-actuating mechanism of an active air mount for vibration control of precision manufacturing machines: experimental work  

NASA Astrophysics Data System (ADS)

With the goal of vibration control and isolation in a clean room, we propose a new type of air mount which consists of pneumatic, electromagnetic (EM), and magnetorheological (MR) actuators. The air mount is installed below a semiconductor manufacturing machine to reduce the adverse effects caused by unwanted vibration. The proposed mechanism integrates the forces in a parallel connection of the three actuators. The MR part is designed to operate in an air spring in which the EM part is installed. The control logic is developed with a classical method and a switching mode to avoid operational mismatch among the forces developed. Based on extended microprocessors, a portable, embedded controller is installed to execute both nonlinear logic and digital communication with the peripherals. The pneumatic forces constantly support the heavy weight of an upper structure and maintain the level of the air mount. The MR damper handles the transient response, while the EM controller reduces the resonance response, which is switched mutually with a threshold. Vibration is detected by laser displacement sensors which have submicron resolution. The impact test results of three tons load weight demonstrate practical feasibility by showing that the proposed triple-actuating mechanism can reduce the transient response as well as the resonance in the air mount, resulting in accurate motion of the semiconductor manufacturing machine.

Kim, Hyung-Tae; Kim, Cheol-Ho; Choi, Seung-Bok; Moon, Seok-Jun; Song, Won-Gil

2014-07-01

409

Apparent Brecciation Gradient, Mount Desert Island, Maine  

NASA Astrophysics Data System (ADS)

Mount Desert Island, Maine, comprises a shallow level, Siluro-Devonian igneous complex surrounded by a distinctive breccia zone ("shatter zone" of Gilman and Chapman, 1988). The zone is very well exposed on the southern and eastern shores of the island and provides a unique opportunity to examine subvolcanic processes. The breccia of the Shatter Zone shows wide variation in percent matrix and clast, and may represent a spatial and temporal gradient in breccia formation due to a single eruptive or other catastrophic volcanic event. The shatter zone was divided into five developmental stages based on the extent of brecciation: Bar Harbor Formation, Sols Cliffs breccia, Seeley Road breccia, Dubois breccia, and Great Head breccia. A digital camera was employed to capture scale images of representative outcrops using a 0.5 m square Plexiglas frame. Individual images were joined in Adobe Photoshop to create a composite image of each outcrop. The composite photo was then exported to Adobe Illustrator, which was used to outline the clasts and produce a digital map of the outcrop for analysis. The fractal dimension (Fd) of each clast was calculated using NIH Image and a Euclidean distance mapping method described by Brub and Jbrak (1999) to quantify the morphology of the fragments, or the complexity of the outline. The more complex the fragment outline, the higher the fractal dimension, indicating that the fragment is less "mature" or has had less exposure to erosional processes, such as the injection of an igneous matrix. Sols Cliffs breccia has an average Fd of 1.125, whereas Great Head breccia has an average Fd of 1.040, with the stages between having intermediate values. The more complex clasts of the Sols Cliffs breccia with a small amount (26.38%) of matrix material suggests that it is the first stage in a sequence of brecciation ending at the more mature, matrix-supported (71.37%) breccia of Great Head. The results of this study will be used to guide isotopic and geochemical analysis of the matrix igneous material in the attempt to better understand the dynamic processes that occur in subvolcanic environments and the mechanisms involved in breccia formation.

Hawkins, A. T.; Johnson, S. E.

2004-05-01

410

Methods and apparatus for radially compliant component mounting  

DOEpatents

Methods and apparatus for a mounting assembly for a liner of a gas turbine engine combustor are provided. The combustor includes a combustor liner and a radially outer annular flow sleeve. The mounting assembly includes an inner ring surrounding a radially outer surface of the liner and including a plurality of axially extending fingers. The mounting assembly also includes a radially outer ring coupled to the inner ring through a plurality of spacers that extend radially from a radially outer surface of the inner ring to the outer ring.

Bulman, David Edward (Cincinnati, OH); Darkins, Jr., Toby George (Loveland, OH); Stumpf, James Anthony (Columbus, IN); Schroder, Mark S. (Greenville, SC); Lipinski, John Joseph (Simpsonville, SC)

2012-03-27

411

Solar-Panel Dust Accumulation and Cleanings  

NASA Technical Reports Server (NTRS)

Air-fall dust accumulates on the solar panels of NASA's Mars Exploration Rovers, reducing the amount of sunlight reaching the solar arrays. Pre-launch models predicted steady dust accumulation. However, the rovers have been blessed with occasional wind events that clear significant amounts of dust from the solar panels.

This graph shows the effects of those panel-cleaning events on the amount of electricity generated by Spirit's solar panels. The horizontal scale is the number of Martian days (sols) after Spirit's Jan. 4, 2005, (Universal Time) landing on Mars. The vertical scale indicates output from the rover's solar panels as a fraction of the amount produced when the clean panels first opened. Note that the gradual declines are interrupted by occasional sharp increases, such as a dust-cleaning event on sol 420.

2005-01-01

412

Multi-clad black display panel  

DOEpatents

A multi-clad black display panel, and a method of making a multi-clad black display panel, are disclosed, wherein a plurality of waveguides, each of which includes a light-transmissive core placed between an opposing pair of transparent cladding layers and a black layer disposed between transparent cladding layers, are stacked together and sawed at an angle to produce a wedge-shaped optical panel having an inlet face and an outlet face.

Veligdan, James T. (Manorville, NY); Biscardi, Cyrus (Bellport, NY); Brewster, Calvin (North Patchogue, NY)

2002-01-01

413

Development of a Plasma Panel Muon Detector  

SciTech Connect

A radiation detector technology based on Plasma Display Panels (PDP), the underlying engine of panel plasma television displays is being investigated. Emerging from this well established television technology is the Plasma Panel Sensor (PPS), a novel variant of the micropattern radiation detector. The PPS is fundamentally a fast, high resolution detector comprised of an array of plasma discharge cells operating in a hermetically sealed gas mixture. We report on the PPS development effort, including proof-of-principle results of laboratory signal observations.

Levin, Daniel S. [University of Michigan; Ball, Robert [University of Michigan; Beene, James R [ORNL; Benhammou, Yan [Tel Aviv University; Chapman, J. Wehrley [University of Michigan; Dai, T. [University of Michigan; Etzion, E [Tel Aviv University; Friedman, Dr. Peter S. [Integrated Sensors, LLC; Ben Moshe, M. [Tel Aviv University; Silver, Yiftah [Tel Aviv University; Varner Jr, Robert L [ORNL; Weaverdyck, Curtis [University of Michigan; White, Sebastion [Brookhaven National Laboratory (BNL); Zhou, Bing [University of Michigan

2010-01-01

414

Moisture ingression in honeycomb core sandwich panels  

Microsoft Academic Search

Moisture ingression was studied in several composite sandwich panels, in which hydration was applied over a large surface\\u000a area at the panel edges. Significant moisture ingression occurred in panels with cores of Korex (based on a substrate of a\\u000a fiber pulp paper) and HRP (consisting of a woven-glass-fiber substrate with a polymer coating) of different density. Ingression\\u000a was more rapid

D. Cise; R. S. Lakes

1997-01-01

415

Surface-mounted flat conductor cable for home wiring  

NASA Technical Reports Server (NTRS)

The concepts are discussed which are being considered and developed for surface-mounted wiring using flat conductor cable. Safety aspects, problems being encountered, and advantages are also discussed.

Hankins, J. D.; Carden, J. R.

1974-01-01

416

Mounting technique for pressure transducers minimizes measurement interferences  

NASA Technical Reports Server (NTRS)

Miniaturized transducers are fabricated from commercially available four-arm semiconductor gages; transducers are connected as bridge circuit and mounted on internal face of small diaphragm. Jacket made of conductive plastic may be needed to avoid buildup or static charges.

Lanham, R. N.; Taylor, C. E.; Balmer, C. E.; Hwang, C.

1975-01-01

417

14. BRIDGE ABUTMENT AND ARCH TRUSS MOUNTING PLATE SHOWING EYEBAR ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

14. BRIDGE ABUTMENT AND ARCH TRUSS MOUNTING PLATE SHOWING EYE-BAR CONNECTION AND EYE-BAR PIN LOCATION - Spruce Street Bridge, East Spruce Street, 500 Block, spanning Power Canal, Sault Ste. Marie, Chippewa County, MI

418

View of CCTV camera mounted on aft payload bay bulkhead  

NASA Technical Reports Server (NTRS)

View of the closed circuit television (CCTV) camera mounted on aft payload bay bulkhead on the starboard side of the space shuttle near the orbital maneuvering systems (OMS) reaction control system (RCS) pods.

1981-01-01

419

Rapid location of mount points JONATHAN M. SMITH  

E-print Network

­­ ­­ Rapid location of mount points JONATHAN M. SMITH Computer Science Department, Columbia ``core'' is ``/u2/smith/core''. The current directory is a directory­valued variable. It is an implied

420

65. SAC Minuteman Missile "shell", mounted for permanent display in ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

65. SAC Minuteman Missile "shell", mounted for permanent display in front lawn, building 500, looking east - Offutt Air Force Base, Strategic Air Command Headquarters & Command Center, Headquarters Building, 901 SAC Boulevard, Bellevue, Sarpy County, NE

421

7. VAL CAMERA STATION, INTERIOR VIEW OF CAMERA MOUNT, COMMUNICATION ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

7. VAL CAMERA STATION, INTERIOR VIEW OF CAMERA MOUNT, COMMUNICATION EQUIPMENT AND STORAGE CABINET. - Variable Angle Launcher Complex, Camera Stations, CA State Highway 39 at Morris Reservior, Azusa, Los Angeles County, CA

422

UCSF Mount Zion Vicinity Parking Public Parking Lots  

E-print Network

UCSF Mount Zion Vicinity Parking Public Parking Lots UCSF Valet Services Valet: 1600 Divisadero St Entrance on Scott between Sutter & Bush AMPCO System Parking 2186 Geary Blvd (415) 567-4656 Japantown

Walter, Peter

423

Helmet-Mounted Display Of Clouds Of Harmful Gases  

NASA Technical Reports Server (NTRS)

Proposed helmet-mounted opto-electronic instrument provides real-time stereoscopic views of clouds of otherwise invisible toxic, explosive, and/or corrosive gas. Display semitransparent: images of clouds superimposed on scene ordinarily visible to wearer. Images give indications on sizes and concentrations of gas clouds and their locations in relation to other objects in scene. Instruments serve as safety devices for astronauts, emergency response crews, fire fighters, people cleaning up chemical spills, or anyone working near invisible hazardous gases. Similar instruments used as sensors in automated emergency response systems that activate safety equipment and emergency procedures. Both helmet-mounted and automated-sensor versions used at industrial sites, chemical plants, or anywhere dangerous and invisible or difficult-to-see gases present. In addition to helmet-mounted and automated-sensor versions, there could be hand-held version. In some industrial applications, desirable to mount instruments and use them similarly to parking-lot surveillance cameras.

Diner, Daniel B.; Barengoltz, Jack B.; Schober, Wayne R.

1995-01-01

424

10. ENGINE TEST CELL BUILDING INTERIOR. CELL 4, MOUNTING STAND. ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

10. ENGINE TEST CELL BUILDING INTERIOR. CELL 4, MOUNTING STAND. LOOKING NORTHWEST. - Fairchild Air Force Base, Engine Test Cell Building, Near intersection of Arnold Street & George Avenue, Spokane, Spokane County, WA

425

Angular Alignment Testing of Laser Mirror Mounts Under Temperature Cycling  

NASA Technical Reports Server (NTRS)

A number of commercial and custom-built laser mirror mounts were tested for angular alignment sensitivity during temperature cycling from room temperature (20 C) to 40 C. A Nd:YAG laser beam was reflected off a mirror that was held by the mount under test and was directed to a position-sensitive detector. Horizontal and vertical movement of the reflected beam was recorded, and the angular movement, as a function of temperature (coefficient of thermal tilt (CTT)) was calculated from these data. In addition, the amount of hysteresis in the movement after cycling from room temperature to 40 C and back was determined. All commercial mounts showed greater angular movement than the simpler National Aeronautics and Space Administration Lidar Atmospheric Sensing Experiment (NASA LASE) custom mirror mounts.

Bullock, K. T.; DeYoung, R. J.; Sandford, S. P.

1997-01-01

426

13. Photocopy of photograph mounted on Christmas card (from St. ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

13. Photocopy of photograph mounted on Christmas card (from St. Paul's Church) Photographer unknown 1906 INTERIOR LOOKING EAST - St. Paul's Episcopal Church, 120 East J Street, Benicia, Solano County, CA

427

Unique mounting for miniature optics at cryogenic temperatures  

NASA Astrophysics Data System (ADS)

This paper highlights a mounting solution for miniature, high aspect ratio Zinc Selenide (ZnSe) optics capable of sustaining high vibration loads and cryogenic temperatures. The GOES-R Advanced Baseline Imager (ABI) optical design requires ZnSe filters that have a significantly higher-than-standard aspect ratio. The thin structure, along with the material properties of ZnSe, lead to a filter that is very delicate. The mounting technique minimizes stresses induced over thermal extremes, while maintaining sufficient preload for launch loads. The filters are mounted to metallic housings using a spring loaded retainer and compliant materials. Detailed analysis of the mounting and an understanding of the unique material properties enables the design to be successful. Special attention is given to materials passing through glass transition temperatures. This design was qualified through extensive thermal cycling and vibration testing, and exhibited performance acceptable for production.

Leahy, Zachary N.; Magner, Andrew J.

2013-09-01

428

Support for equipment - Quick mounting with quick release  

NASA Technical Reports Server (NTRS)

Temporary support device for equipment consists of pin bracket for attachment to item and socket bracket for mounting on any structure. System is adaptable to broad range of temporary storage media. No engagement, release, or adjustment of components is required.

Chamberlain, W. W., II; Jacobson, H. B.

1970-01-01

429

17. DETAIL VIEW OF CUPOLA ATOP OPERATOR'S CABIN WHICH MOUNTS ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

17. DETAIL VIEW OF CUPOLA ATOP OPERATOR'S CABIN WHICH MOUNTS SIGNAL HORNS, WEATHER VANE - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

430

49 CFR 178.255-11 - Tank mountings.  

Code of Federal Regulations, 2010 CFR

...devices shall be deemed to comply with this requirement. (b) All tank mountings such as skids, fastenings, brackets, cradles, lifting lugs, etc., intended to carry loadings shall be permanently secured to tanks in accordance with the...

2010-10-01

431

29 CFR 1926.553 - Base-mounted drum hoists.  

Code of Federal Regulations, 2011 CFR

...ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR CONSTRUCTION Helicopters, Hoists, Elevators, and Conveyors 1926.553 Base-mounted drum hoists. (a) General requirements. (1) Exposed moving...

2011-07-01

432

Piezoelectric Shunt Vibration Damping of F-15 Panel under High Acoustic Excitation  

NASA Technical Reports Server (NTRS)

At last year's SPIE symposium, we reported results of an experiment on structural vibration damping of an F-15 underbelly panel using piezoelectric shunting with five bonded PZT transducers. The panel vibration was induced with an acoustic speaker at an overall sound pressure level (OASPL) of about 90 dB. Amplitude reductions of 13.45 and 10.72 dB were achieved for the first and second modes, respectively, using single- and multiple-mode shunting. It is the purpose of this investigation to extend the passive piezoelectric shunt-damping technique to control structural vibration induced at higher acoustic excitation levels, and to examine the controllability and survivability of the bonded PZT transducers at these high levels. The shunting experiment was performed with the Thermal Acoustic Fatigue Apparatus (TAFA) at the NASA Langley Research Center using the same F-15 underbelly panel. The TAFA is a progressive wave tube facility. The panel was mounted in one wall of the TAFA test section using a specially designed mounting fixture such that the panel was subjected to grazing-incidence acoustic excitation. Five PZT transducers were used with two shunt circuits designed to control the first and second modes of the structure between 200 and 400 Hz. We first determined the values of the shunt inductance and resistance at an OASPL of 130 dB. These values were maintained while we gradually increased the OASPL from 130 to 154 dB in 6-dB steps. During each increment, the frequency response function between accelerometers on the panel and the acoustic excitation measured by microphones, before and after shunting, were recorded. Good response reduction was observed up to the 148dB level. The experiment was stopped at 154 dB due to wire breakage from vibration at a transducer wire joint. The PZT transducers, however, were still bonded well on the panel and survived at this high dB level. We also observed shifting of the frequency peaks toward lower frequency when the OASPL was increased. Detailed experimental results will be presented.

Wu, Shu-Yau; Turner, Travis L.; Rizzi, Stephen A.

2000-01-01

433

Vibration isolation of automotive vehicle engine using periodic mounting systems  

NASA Astrophysics Data System (ADS)

Customer awareness and sensitivity to noise and vibration levels have been raised through increasing television advertisement, in which the vehicle noise and vibration performance is used as the main market differentiation. This awareness has caused the transportation industry to regard noise and vibration as important criteria for improving market shares. One industry that tends to be in the forefront of the technology to reduce the levels of noise and vibration is the automobile industry. Hence, it is of practical interest to reduce the vibrations induced structural responses. The automotive vehicle engine is the main source of mechanical vibrations of automobiles. The engine is vulnerable to the dynamic action caused by engine disturbance force in various speed ranges. The vibrations of the automotive vehicle engines may cause structural failure, malfunction of other parts, or discomfort to passengers because of high level noise and vibrations. The mounts of the engines act as the transmission paths of the vibrations transmitted from the excitation sources to the body of the vehicle and passengers. Therefore, proper design and control of these mounts are essential to the attenuation of the vibration of platform structures. To improve vibration resistant capacities of engine mounting systems, vibration control techniques may be used. For instance, some passive and semi-active dissipation devices may be installed at mounts to enhance vibration energy absorbing capacity. In the proposed study, a radically different concept is presented whereby periodic mounts are considered because these mounts exhibit unique dynamic characteristics that make them act as mechanical filters for wave propagation. As a result, waves can propagate along the periodic mounts only within specific frequency bands called the "Pass Bands" and wave propagation is completely blocked within other frequency bands called the "Stop Bands". The experimental arrangements, including the design of mounting systems with plain and periodic mounts will be studied first. The dynamic characteristics of such systems will be obtained experimentally in both cases. The tests will be then carried out to study the performance characteristics of periodic mounts with geometrical and/or material periodicity. The effectiveness of the periodicity on the vibration levels of mounting systems will be demonstrated theoretically and experimentally. Finally, the experimental results will be compared with the theoretical predictions.

Asiri, S.

2005-05-01

434

Maintenance and operations tasks accomplished at DSS 12 during the antenna panel replacement downtime  

NASA Technical Reports Server (NTRS)

The heavy schedule of tracking activities at the Echo Deep Space Station (DSS 12) prevents some time-consuming maintenance tasks from being performed. Careful coordination prior to and during a mandatory task (antenna panel replacement) made it possible to do a large number of unrelated tasks that ordinarily would have to be deferred. The maintenance and operations tasks accomplished during the downtime are described.

Butcher, L.; Jonas, T.; Wood, W.

1982-01-01

435

Energy efficiency improvements for refrigerator/freezers using prototype doors containing gas-filled panel insulating systems  

SciTech Connect

Energy efficiency improvements in domestic refrigerator/freezers, are directly influenced by the overall thermal performance of the cabinet and doors. An advanced system for reducing heat gain is Gas-Filled Panel thermal insulation technology. Gas-Filled Panels contain a low-conductivity, inert gas at atmospheric pressure and employ a reflective baffle to suppress radiation and convection within the gas. This paper presents energy use test results for a 1993 model 500 liter top mount refrigerator/freezer operated with its original doors and with a series of alternative prototype doors. Gas-Filled Panel technology was used in two types of prototype refrigerator/freezer doors. In one design, panels were used in composite with foam in standard metal door pans; this design yielded no measurable energy savings. In the other design, special polymer door pans were fitted with panels that fill nearly all of the available insulation volume; this design yielded a 6.5% increase in energy efficiency for the entire refrigerator/freezer. The EPA Refrigerator Analysis computer program has been used to predict the change in daily energy consumption with the alternative doors. The computer model also projects a 25% energy efficiency improvement for a refrigerator/freezer that would use Gas-Filled Panel insulation throughout the cabinet as well as the doors.

Griffith, B.; Arasteh, D.; Tuerler, D.

1995-01-01

436

Experimental Evaluation of the "Polished Panel Optical Receiver" Concept on the Deep Space Network's 34 Meter Antenna  

NASA Technical Reports Server (NTRS)

The potential development of large aperture ground-based "photon bucket" optical receivers for deep space communications has received considerable attention recently. One approach currently under investigation proposes to polish the aluminum reflector panels of 34-meter microwave antennas to high reflectance, and accept the relatively large spotsize generated by even state-of-the-art polished aluminum panels. Here we describe the experimental effort currently underway at the Deep Space Network (DSN) Goldstone Communications Complex in California, to test and verify these concepts in a realistic operational environment. A custom designed aluminum panel has been mounted on the 34 meter research antenna at Deep-Space Station 13 (DSS-13), and a remotely controlled CCD camera with a large CCD sensor in a weather-proof container has been installed next to the subreflector, pointed directly at the custom polished panel. Using the planet Jupiter as the optical point-source, the point-spread function (PSF) generated by the polished panel has been characterized, the array data processed to determine the center of the intensity distribution, and expected communications performance of the proposed polished panel optical receiver has been evaluated.

Vilnrotter, Victor A.

2012-01-01

437

Uncertainties in predicting solar panel power output  

NASA Technical Reports Server (NTRS)

The problem of calculating solar panel power output at launch and during a space mission is considered. The major sources of uncertainty and error in predicting the post launch electrical performance of the panel are considered. A general discussion of error analysis is given. Examples of uncertainty calculations are included. A general method of calculating the effect on the panel of various degrading environments is presented, with references supplied for specific methods. A technique for sizing a solar panel for a required mission power profile is developed.

Anspaugh, B.

1974-01-01

438

Orbiter radiator panel solar focusing test  

NASA Technical Reports Server (NTRS)

Test data are presented which define the area around the Orbiter radiator panels for which the solar reflections are concentrated to one-sun or more. The concave shape of the panels and their specular silver/Teflon coating causes focusing of the reflected solar energy which could have adverse heating effects on equipment or astronaut extravehicular activity (EVA) in the vicinity of the radiator panels. A room ambient test method was utilized with a one-tenth scale model of the radiator panels.

Howell, H. R.; Rankin, J. G.

1983-01-01

439

Taking Charge: Walter Sydney Adams and the Mount Wilson Observatory  

NASA Astrophysics Data System (ADS)

The growing preeminence of American observational astronomy in the first half of the 20th century is a well-known story and much credit is given to George Ellery Hale and his skill as an observatory-building entrepreneur. But a key figure who has yet to be discussed in great detail is Walter Sydney Adams (1876-1956), Hale's Assistant Director at Mount Wilson Observatory. Due to Hale's illnesses, Adams was Acting Director for much of Hale's tenure, and he became the second Director of Mount Wilson from 1923 to 1946. Behind his New England reserve Adams was instrumental in the growth of Mount Wilson and thus American astronomy in general. Adams was hand-picked by Hale to take charge of stellar spectroscopy work at Yerkes and Mount Wilson and the younger astronomer showed tremendous loyalty to Hale and Hale's vision throughout his career. As Adams assumed the leadership role at Mount Wilson he concentrated on making the observatory a place where researchers worked with great freedom but maintain a high level of cooperation. This paper will concentrate on Adams's early years and look at his growing relationship with Hale and how he came to be the central figure in the early history of Mount Wilson as both a solar and stellar observatory. His education, his years at Dartmouth and Yerkes (including his unfortunate encounter with epsilon Leonis), and his formative years on Mount Wilson are all important in learning how he shaped the direction of Mount Wilson and the development of American astronomy in the first half of the 20th century. This latter history cannot be complete until we bring Adams into better focus.

Brashear, R.

2004-12-01

440

Mortality on Mount Everest, 1921-2006: descriptive study  

Microsoft Academic Search

Objective To examine patterns of mortality among climbers on Mount Everest over an 86 year period.Design Descriptive study.Setting Climbing expeditions to Mount Everest, 1921-2006.Participants 14 138 mountaineers; 8030 climbers and 6108 sherpas.Main outcome measure Circumstances of deaths.Results The mortality rate among mountaineers above base camp was 1.3%. Deaths could be classified as involving trauma (objective hazards or falls, n=113), as

Paul G Firth; Hui Zheng; Jeremy S Windsor; Andrew I Sutherland; Christopher H Imray; G W K Moore; John L Semple; Robert C Roach; Richard A Salisbury

2008-01-01

441

Using a Head-Mounted Camera to Infer Attention Direction  

ERIC Educational Resources Information Center

A head-mounted camera was used to measure head direction. The camera was mounted to the forehead of 20 6- and 20 12-month-old infants while they watched an object held at 11 horizontal (-80 to + 80) and 9 vertical (-48 to + 50) positions. The results showed that the head always moved less than required to be on target. Below 30 in the

Schmitow, Clara; Stenberg, Gunilla; Billard, Aude; von Hofsten, Claes

2013-01-01

442

Testing tail-mounted transmitters with Myocastor coypus (nutria)  

USGS Publications Warehouse

We developed a tail-mounted radio-transmitter for Myocastor coypus (nutria) that offers a practical and efficient alternative to collar or implant methods. The mean retention time was 96 d (range 57-147 d, n = 7), making this a practical method for short-term studies. The tail-mounts were less injurious to animals than collars and easier for field researchers to implement than either collars or surgically implanted transmitters.

Merino, S.; Carter, J.; Thibodeaux, G.

2007-01-01

443

76 FR 29791 - Bottom Mount Combination Refrigerator-Freezers From Korea and Mexico  

Federal Register 2010, 2011, 2012, 2013

...from Korea of bottom mount combination refrigerator-freezers...from Mexico of bottom mount combination refrigerator-freezers...consumer organizations have the right to appear as parties in Commission...subsidized imports of bottom mount combination refrigerator-freezers...

2011-05-23

444

Effect of a flexibly mounted store on the flutter speed of a wing  

NASA Technical Reports Server (NTRS)

A passive system proposed for increasing the flutter speed of a wing with heavy concentrated weights involves the concept of mounting the store on a pitch pivot having a very low pitch stiffness relative to the wing stiffness. This concept was investigated utilizing a two dimensional approach involving 4 degrees of freedom, namely, wing bending, wing torsion, store pitch and store vertical translation. This preliminary analysis was very encouraging and the results demonstrate that, if the uncoupled store pitch frequency was below the wing bending frequency, the flutter speed was greatly increased. A second more complete analysis was developed utilizing a three dimensional structure, but retaining the two dimensional, incompressible unsteady airforces of Theodorsen. The details of the analysis are included.

Runyan, H. L.

1980-01-01

445

Space Radar Image of Mount Pinatubo Volcano, Philippines  

NASA Technical Reports Server (NTRS)

These are color composite radar images showing the area around Mount Pinatubo in the Philippines. The images were acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on April 14, 1994 (left image) and October 5,1994 (right image). The images are centered at about 15 degrees north latitude and 120.5 degrees east longitude. Both images were obtained with the same viewing geometry. The color composites were made by displaying the L-band (horizontally transmitted and received) in red; the L-band (horizontally transmitted and vertically received) in green; and the C-band (horizontally transmitted and vertically received) in blue. The area shown is approximately 40 kilometers by 65 kilometers (25 miles by 40 miles). The main volcanic crater on Mount Pinatubo produced by the June 1991 eruptions and the steep slopes on the upper flanks of the volcano are easily seen in these images. Red on the high slopes shows the distribution of the ash deposited during the 1991 eruption, which appears red because of the low cross-polarized radar returns at C and L bands. The dark drainages radiating away from the summit are the smooth mudflows, which even three years after the eruptions continue to flood the river valleys after heavy rain. Comparing the two images shows that significant changes have occurred in the intervening five months along the Pasig-Potrero rivers (the dark area in the lower right of the images). Mudflows, called 'lahars,' that occurred during the 1994 monsoon season filled the river valleys, allowing the lahars to spread over the surrounding countryside. Three weeks before the second image was obtained, devastating lahars more than doubled the area affected in the Pasig-Potrero rivers, which is clearly visible as the increase in dark area on the lower right of the images. Migration of deposition to the east (right) has affected many communities. Newly affected areas included the community of Bacolor, Pampanga, where thousands of homes were buried in meters of hot mud and rock as 80,000 people fled the lahar-stricken area. Scientists are closely monitoring the westward migration ( toward the left in this image) of the lahars as the Pasig-Potrero rivers seek to join with the Porac River, an area that has not seen laharic activity since the eruption. This could be devastating because the Pasig-Potrero rivers might be permanently redirected to lower elevations along the Porac River where communities are located. Ground saturation with water during the rainy season reveals inactive channels that were dry in the April image. A small lake has turned into a pond in the lower reaches of the Potrero River because the channels are full of lahar deposits and the surface runoff has no where to flow. Changes in the degree of erosion in ash and pumice deposits from the 1991 eruption can also be seen in the channels that deliver the mudflow material to the Pasig-Potrero rivers. The 1991 Mount Pinatubo eruption is well known for its near-global effects on the atmosphere and short-term climate due to the large amount of sulfur dioxide that was injected into the upper atmosphere. Locally, however, the effects will most likely continue to impact surrounding areas for as long as the next 10 to 15 years. Mudflows, quite certainly, will continue to pose severe hazards to adjacent areas. Radar observations like those obtained by SIR-C/X-SAR will play a key role in monitoring these changes because of the radar's ability to see in daylight or darkness and even in the worst weather conditions. Radar imaging will be particularly useful, for example, during the monsoon season, when the lahars form. Frequent imaging of these lahar fields will allow scientists to better predict when they are likely to begin flowing again and which communities might be at risk. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless

1994-01-01

446

Life associated with a 2.76 Ga ephemeral pond?: evidence from Mount Roe #2 paleosol  

NASA Technical Reports Server (NTRS)

Dark sericitic material at and near the top of the 2.765 +/- 0.01 Ga Mount Roe #2 paleosol in Western Australia contains 0.05-0.10 wt% organic carbon with delta 13C values between -33% and -51% PDB (Peedee belemnite). Such negative isotopic values strongly indicate that methanotrophs once inhabited this material. The textures and the chemical composition of the dark sericitic material indicate that the methanotrophs lived in or at the edges of ephemeral ponds, that these ponds became desiccated, and that heavy rains transported the material to its present sites. The discovery of methanotrophs associated with the Mount Roe #2 paleosol may extend their geologic record on land by at least 1.5 b.y. Methanotrophy in this setting is consistent with the notion that atmospheric methane levels were > or = 20 (mu)atm during the Late Archean. The radiative forcing due to such high atmospheric methane levels could have compensated for the faint younger sun and helped to prevent massive glaciation during the Late Archean.

Rye, R.; Holland, H. D.

2000-01-01

447

Causal feedforward control of a stochastically excited fuselage structure with active sidewall panel.  

PubMed

This paper provides experimental results of an aircraft-relevant double panel structure mounted in a sound transmission loss facility. The primary structure of the double panel system is excited either by a stochastic point force or by a diffuse sound field synthesized in the reverberation room of the transmission loss facility. The secondary structure, which is connected to the frames of the primary structure, is augmented by actuators and sensors implementing an active feedforward control system. Special emphasis is placed on the causality of the active feedforward control system and its implications on the disturbance rejection at the error sensors. The coherence of the sensor signals is analyzed for the two different disturbance excitations. Experimental results are presented regarding the causality, coherence, and disturbance rejection of the active feedforward control system. Furthermore, the sound transmission loss of the double panel system is evaluated for different configurations of the active system. A principal result of this work is the evidence that it is possible to strongly influence the transmission of stochastic disturbance sources through double panel configurations by means of an active feedforward control system. PMID:25324065

Misol, Malte; Haase, Thomas; Monner, Hans Peter; Sinapius, Michael

2014-10-01

448

STFC Astronomy Advisory Panel Report (October 2012) STFC Astronomy Advisory Panel report (October 2012) 1  

E-print Network

#12;STFC Astronomy Advisory Panel Report (October 2012) STFC Astronomy Advisory Panel report (October 2012) 1 STFC Astronomy Advisory Panel 2012 Programmatic Review report to PPAN (October 2012) Executive summary This document provides a roadmap for UK astronomy and provides advice for future science

Crowther, Paul

449

AQUEOUS HOMOGENEOUS REACTORTECHNICAL PANEL REPORT  

SciTech Connect

Considerable interest has been expressed for developing a stable U.S. production capacity for medical isotopes and particularly for molybdenum- 99 (99Mo). This is motivated by recent re-ductions in production and supply worldwide. Consistent with U.S. nonproliferation objectives, any new production capability should not use highly enriched uranium fuel or targets. Conse-quently, Aqueous Homogeneous Reactors (AHRs) are under consideration for potential 99Mo production using low-enriched uranium. Although the Nuclear Regulatory Commission (NRC) has guidance to facilitate the licensing process for non-power reactors, that guidance is focused on reactors with fixed, solid fuel and hence, not applicable to an AHR. A panel was convened to study the technical issues associated with normal operation and potential transients and accidents of an AHR that might be designed for isotope production. The panel has produced the requisite AHR licensing guidance for three chapters that exist now for non-power reactor licensing: Reac-tor Description, Reactor Coolant Systems, and Accident Analysis. The guidance is in two parts for each chapter: 1) standard format and content a licensee would use and 2) the standard review plan the NRC staff would use. This guidance takes into account the unique features of an AHR such as the fuel being in solution; the fission product barriers being the vessel and attached systems; the production and release of radiolytic and fission product gases and their impact on operations and their control by a gas management system; and the movement of fuel into and out of the reactor vessel.

Diamond, D.J.; Bajorek, S.; Bakel, A.; Flanagan, G.; Mubayi, V.; Skarda, R.; Staudenmeier, J.; Taiwo, T.; Tonoike, K.; Tripp, C.; Wei, T.; Yarsky, P.

2010-12-03

450

Panel fabrication utilizing GaAs solar cells  

NASA Technical Reports Server (NTRS)

The development of the GaAs solar cells for space applications is described. The activities in the fabrication of GaAs solar panels are outlined. Panels were fabricated while introducing improved quality control, soldering laydown and testing procedures. These panels include LIPS II, San Marco Satellite, and a low concentration panel for Rockwells' evaluation. The panels and their present status are discussed.

Mardesich, N.

1984-01-01

451

Solar energy collection panels and energy recovery systems  

Microsoft Academic Search

Solar energy collection panels and energy recovery systems for recovering solar energy to reduce the power consumption in water heaters, air-conditioning systems and the like are described. The solar panels comprise decorative roofing panels having a second formed panel thereunder so as to define an air flow passage therebetween. The panels absorb solar energy, thereby heating the air within, which

1978-01-01

452

A National Implementation Panel for Detectable Warnings.  

ERIC Educational Resources Information Center

This paper describes meetings by a panel of travel, access, and public transit professionals to discuss detectable warning systems (devices to notify individuals with visual impairments of hazards along their path of travel). Recommendations of the panel for universal design standards and educating communities about detectable warning systems are

Joffee, E.

1996-01-01

453

Fusion Development Path Panel Preliminary Report  

E-print Network

Fusion Development Path Panel Preliminary Report Summary for NRC BPAC Panel (Focus on MFE of a demonstration power plant in approximately 35 years. The plan should recognize the capabilities of all fusion facilities around the world, and include both magnetic fusion energy (MFE) and inertial fusion energy (IFE

454

WTEC Panel Report on ENVIRONMENTALLY BENIGN MANUFACTURING  

E-print Network

F. Murphy (Panel Co-chair) David T. Allen Diana J. Bauer Bert Bras Thomas S. Piwonka Paul S. Sheng Bras Systems Realization Laboratory The George W. Woodruff School of Mechanical Engineering Georgia Chair) Cynthia F. Murphy (Panel Co-chair) David T. Allen Diana J. Bauer Bert Bras Thomas S. Piwonka Paul

Gutowski, Timothy

455

Thermic diode solar panels for space heating  

Microsoft Academic Search

The paper describes the design and operation of thermic diode panels. A single 2 x 8 ft panel contains all the elements of a complete solar energy system: collectors, controls, storage, heat exchangers, and ducting. Heat is transferred from the collector to the storage layer by natural flow of heated water, the flow being controlled by a check valve that

S. Buckley

1978-01-01

456

MoMLA: From Panel to Gallery  

ERIC Educational Resources Information Center

The work presented here in this "Panel to Gallery" was originally produced and assembled for the 2012 Modern Language Association Conference in Seattle, Washington. Similar to "From Gallery to Webtext", the event Victor curated for the 2006 College Composition and Communication Conference, this "Panel to Gallery" event at MLA set aside the

Vitanza, Victor, Ed.; Kuhn, Virginia, Ed.

2013-01-01

457

MODAL DENSITY OF COMPOSITE HONEYCOMB SANDWICH PANELS  

Microsoft Academic Search

Honeycomb sandwich panels with composite face sheets are widely used in spacecraft applications. It is necessary to obtain the modal density of such panels to study their behaviour under acoustic excitation. The governing differential equation, with consideration of the shear flexibility of the core, is derived. From this equation the expression for the modal density is derived. Experimental results for

K. Renji; P. S. Nair; S. Narayanan

1996-01-01

458

Sound insulation improvement using honeycomb sandwich panels  

Microsoft Academic Search

Research results on acoustic treatment technology of honeycomb material to improve noise transmission loss characteristics of light-weight panels are presented in this paper. A prediction model has been presented to describe the transmission loss of the honeycomb panels based on the knowledge of their structural modal parameters. A series of test specimens with aluminum sheets, and fiber reinforced concrete sheets

Huang Wen-chao; Ng Chung-fai

1998-01-01

459

International Grad Student Panel Brown University  

E-print Network

International Grad Student Panel Brown University CS Department 10/31/11 #12;10/31/11 2 Outline Panel Introduction Challenges as a Foreign Student Getting a Job Resources Volunteering Questions it fairly and truthfully. "Doing Honest Work in College", Charles Lipson #12;10/31/11 7 CS Stuff Learn how

Fonseca, Rodrigo

460

ROBOTIC DEVICE FOR CLEANING PHOTOVOLTAIC PANEL ARRAYS  

E-print Network

1 ROBOTIC DEVICE FOR CLEANING PHOTOVOLTAIC PANEL ARRAYS MARK ANDERSON, ASHTON GRANDY, JEREMY HASTIE. The main method for harnessing solar power is with arrays made up of photovoltaic (PV) panels. Accumulation-based cleaning methods for photovoltaic arrays are costly in time, water and energy usage and lack automation

Mavroidis, Constantinos

461

Unit root tests for panel data  

Microsoft Academic Search

This paper develops unit root tests for panel data. These tests are devised under more general assumptions than the tests previously proposed. First, the number of groups in the panel data is assumed to be either finite or infinite. Second, each group is assumed to have different types of nonstochastic and stochastic components. Third, the time series spans for the

In Choi

2001-01-01

462

Drag force acting on biofouled net panels  

Microsoft Academic Search

Measurements were made to assess the increase in drag on aquaculture cage netting due to biofouling. Drag force was obtained by towing net panels, perpendicular to the incident flow, in experiments conducted in a tow tank and in the field. The net panels were fabricated from netting stretched within a 1m2 pipe frame. They were towed at various speeds, and

M. Robinson Swift; David W. Fredriksson; Alexander Unrein; Brett Fullerton; Oystein Patursson; Kenneth Baldwin

2006-01-01

463

Evolution of the Immunoglobulin Heavy Chain Class Switch Recombination Mechanism  

Microsoft Academic Search

To mount an optimum immune response, mature B lymphocytes can change the class of expressed antibody from IgM to IgG, IgA, or IgE through a recombination\\/deletion process termed immunoglobulin heavy chain (IgH) class switch recombination (CSR). CSR requires the activation?induced cytidine deaminase (AID), which has been shown to employ single?stranded DNA as a substrate in vitro. IgH CSR occurs within

Jayanta Chaudhuri; Uttiya Basu; Ali Zarrin; Catherine Yan; Sonia Franco; Thomas Perlot; Bao Vuong; Jing Wang; Ryan T. Phan; Abhishek Datta; John Manis; Frederick W. Alt

2007-01-01

464

Hypervelocity Impact Performance of Open Cell Foam Core Sandwich Panel Structures  

NASA Technical Reports Server (NTRS)

Open cell metallic foam core sandwich panel structures are of interest for application in spacecraft micrometeoroid and orbital debris shields due to their novel form and advantageous structural and thermal performance. Repeated shocking as a result of secondary impacts upon individual foam ligaments during the penetration process acts to raise the thermal state of impacting projectiles ; resulting in fragmentation, melting, and vaporization at lower velocities than with traditional shielding configurations (e.g. Whipple shield). In order to characterize the protective capability of these structures, an extensive experimental campaign was performed by the Johnson Space Center Hypervelocity Impact Technology Facility, the results of which are reported in this paper. Although not capable of competing against the protection levels achievable with leading heavy shields in use on modern high-risk vehicles (i.e. International Space Station modules), metallic foam core sandwich panels are shown to provide a substantial improvement over comparable structural panels and traditional low weight shielding alternatives such as honeycomb sandwich panels and metallic Whipple shields. A ballistic limit equation, generalized in terms of panel geometry, is derived and presented in a form suitable for application in risk assessment codes.

Ryan, S.; Ordonez, E.; Christiansen, E. L.; Lear, D. M.

2010-01-01

465

Report of the Federal Internetworking Requirements Panel  

SciTech Connect

The Federal Internetworking Requirements Panel (FIRP) was established by the National Institute of Standards and Technology (NIST) to reassess Federal requirements for open systems networks and to recommend policy on the Government`s use of networking standards. The Panel was chartered to recommend actions which the Federal Government can take to address the short and long-term issues of interworking and convergence of networking protocols--particularly the Internet Protocol Suite (IPS) and Open Systems Interconnection (OSI) protocol suite and, when appropriate, proprietary protocols. The Panel was created at the request of the Office of Management and Budget in collaboration with the Federal Networking Council and the Federal Information Resources Management Policy Council. The Panel`s membership and charter are contained in an appendix to this report.

NONE

1994-05-31

466

Method for producing micro heat panels  

NASA Technical Reports Server (NTRS)

Flat or curved micro heat pipe panels are fabricated by arranging essentially parallel filaments in the shape of the desired panel. The configuration of the filaments corresponds to the desired configuration of the tubes that will constitute the heat pipes. A thermally conductive material is then deposited on and around the filaments to fill in the desired shape of the panel. The filaments are then removed, leaving tubular passageways of the desired configuration and surface texture in the material. The tubes are then filled with a working fluid and sealed. Composite micro heat pipe laminates are formed by layering individual micro heat pipe panels and bonding them to each other to form a single structure. The layering sequence of the micro heat pipe panels can be tailored to transport heat preferentially in specific directions as desired for a particular application.

Camarda, Charles J. (Inventor); Peterson, George P. (Inventor); Rummler, Donald R. (Inventor)

1997-01-01

467

Diffractive optics for compact flat panel displays. Final report  

SciTech Connect

Three years ago LLNL developed a practical method to dramatically reduce the chromatic aberration in single element diffractive imaging lenses. High efficiency, achromatic imaging lenses have been fabricated for human vision correction. This LDRD supported research in applying our new methods to develop a unique, diffraction-based optical interface with solid state, microelectronic imaging devices. Advances in microelectronics have led to smaller, more efficient components for optical systems. There have, however, been no equivalent advances in the imaging optics associated with these devices. The goal of this project was to replace the bulky, refractive optics in typical head-mounted displays with micro-thin diffractive optics to directly image flat-panel displays into the eye. To visualize the system think of the lenses of someone`s eyeglasses becoming flat-panel displays. To realize this embodiment, we needed to solve the problems of large chromatic aberrations and low efficiency that are associated with diffraction. We have developed a graceful tradeoff between chromatic aberrations and the diffractive optic thickness. It turns out that by doubling the thickness of a micro-thin diffractive lens we obtain nearly a two-times improvement in chromatic performance. Since the human eye will tolerate one diopter of chromatic aberration, we are able to achieve an achromatic image with a diffractive lens that is only 20 microns thick, versus 3 mm thickness for the comparable refractive lens. Molds for the diffractive lenses are diamond turned with sub-micron accuracy; the final lenses are cast from these molds using various polymers. We thus retain both the micro- thin nature of the diffractive optics and the achromatic image quality of refractive optics. During the first year of funding we successfully extended our earlier technology from 1 cm diameter optics required for vision applications up to the 5 cm diameter optics required for this application. 3 refs., 6 figs.

Sweeney, D.; DeLong, K.

1997-04-29

468

Heaviness of Heavy Quarkonia in Heavy Ion Collisions  

E-print Network

High energy heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) produce a novel medium characterized by an initial energy density over an order of magnitude above the expected phase transformation value and that then evolves as a nearly inviscid liquid. Probing the medium with auto-generated particles is a key methodology to quantitatively determine the medium properties. Pairs of heavy quarks are an excellent probe since their spatial separation to form various quarkonia states spans the relevant range of color screening lengths in the medium. In this proceedings, we describe results from the PHENIX experiment on $J/\\psi$ production and discuss initial physics implications of the measurements.

J. L. Nagle

2007-05-11

469

SPF/DB titanium LFC porous panel concept  

NASA Technical Reports Server (NTRS)

Illustrations for a presentation demonstrating superplastic forming/diffusion bonding titanium porous panels are presented. Fabrication phases, sandwich panels, load bearing qualities, microstructure, and panel surface after finishing are illustrated.

Williams, N. R.

1982-01-01

470

Report of Blue-Ribbon Advisory Panel on Cyberinfrastructure  

NSF Publications Database

... Science Foundation Blue-Ribbon Advisory Panel on Cyberinfrastructure Report (PDF 3.2 MB) TABLE OF ... Testimony to the Panel Appendix E: Charge to the Blue Ribbon Advisory Panel on Infrastructure To ...

471

7 CFR 1940.960 - Federal employee panel members.  

Code of Federal Regulations, 2010 CFR

...true Federal employee panel members. 1940.960 Section 1940...960 Federal employee panel members. (a) The State Director will appoint one FmHA...employee to serve as a voting member of the panel established...

2010-01-01

472

29 CFR 1404.18 - Procedures for requesting expedited panels.  

Code of Federal Regulations, 2011 CFR

... Procedures for requesting expedited panels. 1404.18 Section 1404.18 Labor... Procedures for requesting expedited panels. (a) With the excepting of the...receipt of a joint Request for Arbitration Panel (Form R-43) indicating that...

2011-07-01

473

33 CFR 118.100 - Retroreflective panels on bridge piers.  

...2014-07-01 false Retroreflective panels on bridge piers. 118.100 Section...SIGNALS 118.100 Retroreflective panels on bridge piers. The District Commander...intensity red or green retroreflective panels when the District Commander finds it...

2014-07-01

474

32 CFR 724.122 - Recorder, NDRB Panel.  

...2014-07-01 2014-07-01 false Recorder, NDRB Panel. 724.122 Section 724.122 National Defense...REVIEW BOARD Definitions 724.122 Recorder, NDRB Panel. A panel member responsible for briefing an applicant's...

2014-07-01

475

32 CFR 724.122 - Recorder, NDRB Panel.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Recorder, NDRB Panel. 724.122 Section 724.122 National Defense...REVIEW BOARD Definitions 724.122 Recorder, NDRB Panel. A panel member responsible for briefing an applicant's...

2013-07-01

476

5 CFR 2472.3 - Request for Panel consideration.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Request for Panel consideration. 2472.3 Section 2472.3...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL IMPASSES ARISING PURSUANT TO AGENCY...

2011-01-01

477

29 CFR 1614.309 - Enforcement of Special Panel decision.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Enforcement of Special Panel decision. 1614.309 Section 1614...1614.309 Enforcement of Special Panel decision. The Board shall, upon receipt of the decision of the Special Panel, order the agency concerned to...

2012-07-01

478

46 CFR 120.330 - Distribution panels and switchboards.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Distribution panels and switchboards. 120.330 Section 120...Distribution Systems 120.330 Distribution panels and switchboards. (a) Each distribution panel and switchboard must be in as dry a...

2012-10-01

479

29 CFR 1614.307 - Organization of Special Panel.  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false Organization of Special Panel. 1614.307 Section 1614.307 Labor Regulations...Processes 1614.307 Organization of Special Panel. (a) The Special Panel is composed of: (1) A Chairman...

2010-07-01

480

29 CFR 1614.309 - Enforcement of Special Panel decision.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Enforcement of Special Panel decision. 1614.309 Section 1614...1614.309 Enforcement of Special Panel decision. The Board shall, upon receipt of the decision of the Special Panel, order the agency concerned to...

2011-07-01

481

32 CFR 724.106 - Presiding Officer, NDRB Panel.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Presiding Officer, NDRB Panel. 724.106 Section 724.106 National Defense...Definitions 724.106 Presiding Officer, NDRB Panel. The senior member of an NDRB Panel shall normally be the Presiding Officer....

2010-07-01

482

5 CFR 2472.7 - Investigation of request; Panel assistance.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Investigation of request; Panel assistance. 2472.7 Section 2472.7 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL IMPASSES ARISING PURSUANT TO AGENCY...

2013-01-01

483

75 FR 18566 - Future Systems Technology Advisory Panel Meeting  

Federal Register 2010, 2011, 2012, 2013

...SSA-2010-0014] Future Systems Technology Advisory Panel Meeting AGENCY: Social Security Administration (SSA). ACTION: Notice of Seventh Panel Meeting...meeting is open to the public. Purpose: The Panel, under the Federal Advisory...

2010-04-12

484

29 CFR 1614.307 - Organization of Special Panel.  

... 2014-07-01 false Organization of Special Panel. 1614.307 Section 1614.307 Labor Regulations...Processes 1614.307 Organization of Special Panel. (a) The Special Panel is composed of: (1) A Chairman...

2014-07-01

485

10 CFR 1045.6 - Openness Advisory Panel.  

...2014-01-01 false Openness Advisory Panel. 1045.6 Section 1045.6 Energy...Classification System 1045.6 Openness Advisory Panel. The DOE shall maintain an Openness Advisory Panel, in accordance with the Federal Advisory...

2014-01-01

486

5 CFR 1201.174 - Enforcing the Special Panel decision.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Enforcing the Special Panel decision. 1201.174 Section 1201.174...Involving Allegations of Discrimination Special Panel 1201.174 Enforcing the Special Panel decision. The Board, upon receipt of...

2011-01-01

487

46 CFR 120.330 - Distribution panels and switchboards.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Distribution panels and switchboards. 120.330 Section 120...Distribution Systems 120.330 Distribution panels and switchboards. (a) Each distribution panel and switchboard must be in as dry a...

2011-10-01

488

28 CFR 541.45 - Executive Panel review and appeal.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Executive Panel review and appeal. 541.45 Section 541...Control Unit Programs 541.45 Executive Panel review and appeal. The Executive Panel is composed of the Regional Director of...

2013-07-01

489

29 CFR 1614.307 - Organization of Special Panel.  

Code of Federal Regulations, 2011 CFR

... 2011-07-01 false Organization of Special Panel. 1614.307 Section 1614.307 Labor Regulations...Processes 1614.307 Organization of Special Panel. (a) The Special Panel is composed of: (1) A Chairman...

2011-07-01

490

29 CFR 1614.309 - Enforcement of Special Panel decision.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Enforcement of Special Panel decision. 1614.309 Section 1614...1614.309 Enforcement of Special Panel decision. The Board shall, upon receipt of the decision of the Special Panel, order the agency concerned to...

2013-07-01

491

46 CFR 183.330 - Distribution panels and switchboards.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Distribution panels and switchboards. 183.330 Section 183...Distribution Systems 183.330 Distribution panels and switchboards. (a) Each distribution panel and switchboard must be in as dry a...

2011-10-01

492

32 CFR 724.106 - Presiding Officer, NDRB Panel.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Presiding Officer, NDRB Panel. 724.106 Section 724.106 National Defense...Definitions 724.106 Presiding Officer, NDRB Panel. The senior member of an NDRB Panel shall normally be the Presiding Officer....

2013-07-01

493

34 CFR 300.167 - State advisory panel.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false State advisory panel. 300.167 Section 300.167 Education...DISABILITIES State Eligibility State Advisory Panel 300.167 State advisory panel. The State must establish and maintain an...

2012-07-01

494

7 CFR 1940.960 - Federal employee panel members.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Federal employee panel members. 1940.960 Section 1940...Programs 1940.960 Federal employee panel members. (a) The State Director...employee to serve as a voting member of the panel established in ...

2012-01-01

495

32 CFR 724.122 - Recorder, NDRB Panel.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Recorder, NDRB Panel. 724.122 Section 724.122 National Defense...REVIEW BOARD Definitions 724.122 Recorder, NDRB Panel. A panel member responsible for briefing an applicant's...

2011-07-01

496

5 CFR 2472.11 - Final action by the Panel.  

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Final action by the Panel. 2472.11 Section 2472.11 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL IMPASSES ARISING PURSUANT TO AGENCY...

2010-01-01

497

34 CFR 300.167 - State advisory panel.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false State advisory panel. 300.167 Section 300.167 Education...DISABILITIES State Eligibility State Advisory Panel 300.167 State advisory panel. The State must establish and maintain an...

2010-07-01

498

28 CFR 541.45 - Executive Panel review and appeal.  

...2014-07-01 2014-07-01 false Executive Panel review and appeal. 541.45 Section 541...Control Unit Programs 541.45 Executive Panel review and appeal. The Executive Panel is composed of the Regional Director of...

2014-07-01

499

5 CFR 2472.11 - Final action by the Panel.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Final action by the Panel. 2472.11 Section 2472.11 Administrative...RELATIONS AUTHORITY AND FEDERAL SERVICE IMPASSES PANEL FEDERAL SERVICE IMPASSES PANEL IMPASSES ARISING PURSUANT TO AGENCY...

2013-01-01

500

46 CFR 120.330 - Distribution panels and switchboards.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Distribution panels and switchboards. 120.330 Section 120...Distribution Systems 120.330 Distribution panels and switchboards. (a) Each distribution panel and switchboard must be in as dry a...

2013-10-01