Powered by Deep Web Technologies
Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Grate assembly for fixed-bed coal gasifier  

SciTech Connect

A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.

Notestein, John E. (Morgantown, WV)

1993-01-01T23:59:59.000Z

2

Grate assembly for fixed-bed coal gasifier  

DOE Patents (OSTI)

A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.

Notestein, J.E.

1992-12-31T23:59:59.000Z

3

Automatic toilet seat lowering apparatus  

DOE Patents (OSTI)

A toilet seat lowering apparatus includes a housing defining an internal cavity for receiving water from the water supply line to the toilet holding tank. A descent delay assembly of the apparatus can include a stationary dam member and a rotating dam member for dividing the internal cavity into an inlet chamber and an outlet chamber and controlling the intake and evacuation of water in a delayed fashion. A descent initiator is activated when the internal cavity is filled with pressurized water and automatically begins the lowering of the toilet seat from its upright position, which lowering is also controlled by the descent delay assembly. In an alternative embodiment, the descent initiator and the descent delay assembly can be combined in a piston linked to the rotating dam member and provided with a water channel for creating a resisting pressure to the advancing piston and thereby slowing the associated descent of the toilet seat. A toilet seat lowering apparatus includes a housing defining an internal cavity for receiving water from the water supply line to the toilet holding tank. A descent delay assembly of the apparatus can include a stationary dam member and a rotating dam member for dividing the internal cavity into an inlet chamber and an outlet chamber and controlling the intake and evacuation of water in a delayed fashion. A descent initiator is activated when the internal cavity is filled with pressurized water and automatically begins the lowering of the toilet seat from its upright position, which lowering is also controlled by the descent delay assembly. In an alternative embodiment, the descent initiator and the descent delay assembly can be combined in a piston linked to the rotating dam member and provided with a water channel for creating a resisting pressure to the advancing piston and thereby slowing the associated descent of the toilet seat.

Guerty, Harold G. (Palm Beach Gardens, FL)

1994-09-06T23:59:59.000Z

4

Blast resistant vehicle seat  

DOE Patents (OSTI)

Disclosed are various seats for vehicles particularly military vehicles that are susceptible to attack by road-bed explosive devices such as land mines or improvised explosive devices. The seats often have rigid seat shells and may include rigid bracing for rigidly securing the seat to the chassis of the vehicle. Typically embodiments include channels and particulate media such as sand disposed in the channels. A gas distribution system is generally employed to pump a gas through the channels and in some embodiments the gas is provided at a pressure sufficient to fluidize the particulate media when an occupant is sitting on the seat.

Ripley, Edward B

2013-02-12T23:59:59.000Z

5

Latch assembly  

DOE Patents (OSTI)

A latch assembly for releasably securing an article in the form of a canister within a container housing. The assembly includes a cam pivotally mounted on the housing wall and biased into the housing interior. The cam is urged into a disabled position by the canister as it enters the housing and a latch release plate maintains the cam disabled when the canister is properly seated in the housing. Upon displacement of the release plate, the cam snaps into latching engagement against the canister for securing the same within the housing.

Frederickson, James R. (Richland, WA); Harper, William H. (Richland, WA); Perez, Raymond (Lynnwood, WA)

1986-01-01T23:59:59.000Z

6

Latch assembly  

DOE Patents (OSTI)

A latch assembly for releasably securing an article in the form of a canister within a container housing. The assembly includes a cam pivotally mounted on the housing wall and biased into the housing interior. The cam is urged into a disabled position by the canister as it enters the housing and a latch release plate maintains the cam disabled when the canister is properly seated in the housing. Upon displacement of the release plate, the cam snaps into latching engagement against the canister for securing the same within the housing. 2 figs.

Frederickson, J.R.; Harper, W.H.; Perez, R.

1984-08-17T23:59:59.000Z

7

Integrated seat frame and back support  

DOE Patents (OSTI)

An integrated seating device comprises a seat frame having a front end and a rear end. The seat frame has a double wall defining an exterior wall and an interior wall. The rear end of the seat frame has a slot cut therethrough both the exterior wall and the interior wall. The front end of the seat frame has a slot cut through just the interior wall thereof. A back support comprising a generally L shape has a horizontal member, and a generally vertical member which is substantially perpendicular to the horizontal member. The horizontal member is sized to be threaded through the rear slot and is fitted into the front slot. Welded slat means secures the back support to the seat frame to result in an integrated seating device.

Martin, Leo (Coconut Grove, FL)

1999-01-01T23:59:59.000Z

8

fixed2  

NLE Websites -- All DOE Office Websites (Extended Search)

Part Deux Part Deux Painless Physics Articles BEAM COOLING August 2, 1996 By Leila Belkora, Office of Public Affairs ACCELERATION August 16, 1996 By Dave Finley, Accelerator Division Head RF August 30, 1996 By Pat Colestock, Accelerator Division FIXED TARGET PHYSICS September 20, 1996 By Peter H. Garbincius, Physics Section FIXED TARGET PHYSICS PART DEUX October 16, 1996 By Peter H. Garbincius, Physics Section and Leila Belkora, Office of Public Affaris CROSS SECTION November 1, 1996 By Doreen Wackeroth, Theoretical Physics Edited by Leila Belkora, Office of Public Affaris MAGNETS PART I November 15, 1996 By Hank Glass, Technical Support Section Edited by Donald Sena, Office of Public Affairs MAGNETS PART II January 10, 1997 By Hank Glass, Technical Support Section Edited by Donald Sena, Office of Public Affairs

9

Dump assembly  

DOE Patents (OSTI)

A dump assembly having a fixed conduit and a rotatable conduit provided with overlapping plates, respectively, at their adjacent ends. The plates are formed with openings, respectively, normally offset from each other to block flow. The other end of the rotatable conduit is provided with means for securing the open end of a filled container thereto. Rotation of the rotatable conduit raises and inverts the container to empty the contents while concurrently aligning the conduit openings to permit flow of material therethrough.

Goldmann, Louis H. (Benton City, WA)

1986-01-01T23:59:59.000Z

10

Apparatus for fixing latency  

DOE Patents (OSTI)

An apparatus for fixing computational latency within a deterministic region on a network comprises a network interface modem, a high priority module and at least one deterministic peripheral device. The network interface modem is in communication with the network. The high priority module is in communication with the network interface modem. The at least one deterministic peripheral device is connected to the high priority module. The high priority module comprises a packet assembler/disassembler, and hardware for performing at least one operation. Also disclosed is an apparatus for executing at least one instruction on a downhole device within a deterministic region, the apparatus comprising a control device, a downhole network, and a downhole device. The control device is near the surface of a downhole tool string. The downhole network is integrated into the tool string. The downhole device is in communication with the downhole network.

Hall, David R. (Provo, UT); Bartholomew, David B. (Springville, UT); Moon, Justin (Bountiful, UT); Koehler, Roger O. (Provo, UT)

2009-09-08T23:59:59.000Z

11

Dump assembly  

DOE Patents (OSTI)

This is a claim for a dump assembly having a fixed conduit and a rotatable conduit provided with overlapping plates, respectively, at their adjacent ends. The plates are formed with openings, respectively, normally offset from each other to block flow. The other end of the rotatable conduit is provided with means for securing the open end of a filled container thereto. Rotation of the rotatable conduit raises and inverts the container to empty the contents while concurrently aligning the conduit openings to permit flow of material therethrough. 4 figs.

Goldmann, L.H.

1984-12-06T23:59:59.000Z

12

Variable temperature seat climate control system  

DOE Patents (OSTI)

A temperature climate control system comprises a variable temperature seat, at least one heat pump, at least one heat pump temperature sensor, and a controller. Each heat pump comprises a number of Peltier thermoelectric modules for temperature conditioning the air in a main heat exchanger and a main exchanger fan for passing the conditioned air from the main exchanger to the variable temperature seat. The Peltier modules and each main fan may be manually adjusted via a control switch or a control signal. Additionally, the temperature climate control system may comprise a number of additional temperature sensors to monitor the temperature of the ambient air surrounding the occupant as well as the temperature of the conditioned air directed to the occupant. The controller is configured to automatically regulate the operation of the Peltier modules and/or each main fan according to a temperature climate control logic designed both to maximize occupant comfort during normal operation, and minimize possible equipment damage, occupant discomfort, or occupant injury in the event of a heat pump malfunction.

Karunasiri, Tissa R. (Van Nuys, CA); Gallup, David F. (Pasadena, CA); Noles, David R. (Glendale, CA); Gregory, Christian T. (Alhambra, CA)

1997-05-06T23:59:59.000Z

13

RF Loading Effects of Aircraft Seats in an Electromagnetic Reverberating Environment  

Science Conference Proceedings (OSTI)

Loading effects of aircraft seats in an electromagnetic reverberating environment are investigated. The effects are determined by comparing the reverberation chamber''s insertion losses with and without the seats. The average per-seat absorption cross-sections ...

Nguyen Truong X.

2000-12-01T23:59:59.000Z

14

Statistical Performance Evaluation Of Soft Seat Pressure Relief Valves  

SciTech Connect

Risk-based inspection methods enable estimation of the probability of failure on demand for spring-operated pressure relief valves at the United States Department of Energy's Savannah River Site in Aiken, South Carolina. This paper presents a statistical performance evaluation of soft seat spring operated pressure relief valves. These pressure relief valves are typically smaller and of lower cost than hard seat (metal to metal) pressure relief valves and can provide substantial cost savings in fluid service applications (air, gas, liquid, and steam) providing that probability of failure on demand (the probability that the pressure relief valve fails to perform its intended safety function during a potentially dangerous over pressurization) is at least as good as that for hard seat valves. The research in this paper shows that the proportion of soft seat spring operated pressure relief valves failing is the same or less than that of hard seat valves, and that for failed valves, soft seat valves typically have failure ratios of proof test pressure to set pressure less than that of hard seat valves.

2013-03-26T23:59:59.000Z

15

Provide a seat at the table | ENERGY STAR  

NLE Websites -- All DOE Office Websites (Extended Search)

Engage occupants Provide a seat at the table Share energy goals and progress Identify energy-saving actions Spread the word about how to help Give incentives and recognition...

16

Take Your Seats at Frostbite Theater | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Take Your Seats at Frostbite Theater Take Your Seats at Frostbite Theater Take Your Seats at Frostbite Theater June 6, 2011 - 12:21pm Addthis Liquid Nitrogen Experiments: The Balloon -- What happens when a balloon full of air is plunged into a container full of liquid nitrogen? Yet more fun with liquid nitrogen! Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs Walking through the heat to get to the office today, I decided this was an ideal time to feature Jefferson Lab's "Frostbite Theater." In addition to providing teacher resources, student resources, games and puzzles, and programs and events -- the Thomas Jefferson National Accelerator Facility in Newport News, Virginia, also produces a first-rate series of short science education videos.

17

Steam separator latch assembly  

SciTech Connect

A latch assembly removably joins a steam separator assembly to a support flange disposed at a top end of a tubular shroud in a nuclear reactor pressure vessel. The assembly includes an annular head having a central portion for supporting the steam separator assembly thereon, and an annular head flange extending around a perimeter thereof for supporting the head to the support flange. A plurality of latches are circumferentially spaced apart around the head flange with each latch having a top end, a latch hook at a bottom end thereof, and a pivot support disposed at an intermediate portion therebetween and pivotally joined to the head flange. The latches are pivoted about the pivot supports for selectively engaging and disengaging the latch hooks with the support flange for fixedly joining the head to the shroud or for allowing removal thereof.

Challberg, Roy C. (Livermore, CA); Kobsa, Irvin R. (San Jose, CA)

1994-01-01T23:59:59.000Z

18

Steam separator latch assembly  

DOE Patents (OSTI)

A latch assembly removably joins a steam separator assembly to a support flange disposed at a top end of a tubular shroud in a nuclear reactor pressure vessel. The assembly includes an annular head having a central portion for supporting the steam separator assembly thereon, and an annular head flange extending around a perimeter thereof for supporting the head to the support flange. A plurality of latches are circumferentially spaced apart around the head flange with each latch having a top end, a latch hook at a bottom end thereof, and a pivot support disposed at an intermediate portion therebetween and pivotally joined to the head flange. The latches are pivoted about the pivot supports for selectively engaging and disengaging the latch hooks with the support flange for fixedly joining the head to the shroud or for allowing removal thereof. 12 figures.

Challberg, R.C.; Kobsa, I.R.

1994-02-01T23:59:59.000Z

19

Corresponding author Measuring Concrete Crosstie Rail Seat Pressure Distribution  

E-Print Network (OSTI)

Mediavilla 4 Rail Transportation and Engineering Center ­ RailTEC 2 Department of Civil and Environmental loads and cumulative freight tonnages, as well as increased interest in high speed passenger rail1 Corresponding author Measuring Concrete Crosstie Rail Seat Pressure Distribution with Matrix

Barkan, Christopher P.L.

20

Reduced energy and volume air pump for a seat cushion  

DOE Patents (OSTI)

An efficient pump system is described for transferring air between sets of bladders in a cushion. The pump system utilizes a reversible piston within a cylinder in conjunction with an equalizing valve in the piston which opens when the piston reaches the end of travel in one direction. The weight of a seated user then forces air back across the piston from an inflated bladder to the previously deflated bladder until the pressure is equalized. In this fashion the work done by the pump is cut in half. The inflation and deflation of the different bladders is controlled to vary the pressure on the several pressure points of a seated user. A principal application is for wheel chair use to prevent pressure ulcers. 12 figs.

Vaughn, M.R.; Constantineau, E.J.; Groves, G.E.

1997-08-19T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Mechanical Seal Assembly  

DOE Patents (OSTI)

An improved mechanical seal assembly is provided for sealing rotating shafts with respect to their shaft housings, wherein the rotating shafts are subject to substantial axial vibrations. The mechanical seal assembly generally includes a rotating sealing ring fixed to the shaft, a non-rotating sealing ring adjacent to and in close contact with the rotating sealing ring for forming an annular seal about the shaft, and a mechanical diode element that applies a biasing force to the non-rotating sealing ring by means of hemispherical joint. The alignment of the mechanical diode with respect to the sealing rings is maintained by a series of linear bearings positioned axially along a desired length of the mechanical diode. Alternative embodiments include mechanical or hydraulic amplification components for amplifying axial displacement of the non-rotating sealing ring and transferring it to the mechanical diode.

Kotlyar, Oleg M.

1999-06-18T23:59:59.000Z

22

Mechanical seal assembly  

DOE Patents (OSTI)

An improved mechanical seal assembly is provided for sealing rotating shafts with respect to their shaft housings, wherein the rotating shafts are subject to substantial axial vibrations. The mechanical seal assembly generally includes a rotating sealing ring fixed to the shaft, a non-rotating sealing ring adjacent to and in close contact with the rotating sealing ring for forming an annular seal about the shaft, and a mechanical diode element that applies a biasing force to the non-rotating sealing ring by means of hemispherical joint. The alignment of the mechanical diode with respect to the sealing rings is maintained by a series of linear bearings positioned axially along a desired length of the mechanical diode. Alternative embodiments include mechanical or hydraulic amplification components for amplifying axial displacement of the non-rotating sealing ring and transferring it to the mechanical diode.

Kotlyar, Oleg M. (Salt Lake City, UT)

2001-01-01T23:59:59.000Z

23

Removable feedwater sparger assembly  

DOE Patents (OSTI)

A removable feedwater sparger assembly includes a sparger having an inlet pipe disposed in flow communication with the outlet end of a supply pipe. A tubular coupling includes an annular band fixedly joined to the sparger inlet pipe and a plurality of fingers extending from the band which are removably joined to a retention flange extending from the supply pipe for maintaining the sparger inlet pipe in flow communication with the supply pipe. The fingers are elastically deflectable for allowing engagement of the sparger inlet pipe with the supply pipe and for disengagement therewith. 8 figs.

Challberg, R.C.

1994-10-04T23:59:59.000Z

24

Investigation of Potential Concrete Tie Rail Seat Deterioration Mechanisms: Cavitation Erosion and Hydraulic Pressure Cracking  

E-Print Network (OSTI)

Investigation of Potential Concrete Tie Rail Seat Deterioration Mechanisms: Cavitation Erosion and Hydraulic Pressure Cracking 10-2411 Transportation Research Board 89th Annual Meeting Submitted: November 15-2411 1 ABSTRACT Rail seat deterioration (RSD) is the most critical problem with concrete tie performance

Barkan, Christopher P.L.

25

Investigating the Role of Moisture in Concrete Tie Rail Seat Deterioration  

E-Print Network (OSTI)

Investigating the Role of Moisture in Concrete Tie Rail Seat Deterioration Proceedings of the 2009 ABSTRACT Rail seat deterioration (RSD) is the most critical problem with concrete tie performance on North American freight railroads. Currently, the causes and mechanics of RSD are not sufficiently understood

Barkan, Christopher P.L.

26

A valve with seat?slope proportional to flow area at all poppet positions  

Science Conference Proceedings (OSTI)

An adjustable gas?blending apparatus is hypothesized that would maintain a consistent mixture over a broad range of flowrates. The design equations for the unique valve seat required for such an apparatus are developed and solved numerically. An example seat is calculated and illustrated in table form. For preliminary study

D. W. Guillaume; D. DeVries

1991-01-01T23:59:59.000Z

27

Apparatus for shearing spent nuclear fuel assemblies  

DOE Patents (OSTI)

A method and apparatus are described for shearing spent nuclear fuel assemblies of the type comprising an array of fuel pins disposed within an outer metal shell or shroud. A spent fuel assembly is first compacted in a known manner and then incrementally sheared using fixed and movable shear blades having matched laterally projecting teeth which slidably intermesh to provide the desired shearing action. Incremental advancement of the fuel assembly after each shear cycle is limited to a distance corresponding to the lateral projection of the teeth to ensure fuel assembly breakup into small uniform segments which are amenable to remote chemical processing.

Weil, Bradley S. (Knoxville, TN); Metz, III, Curtis F. (Knoxville, TN)

1980-01-01T23:59:59.000Z

28

Mill Seat Landfill Bioreactor Renewable Green Power (NY)  

Science Conference Proceedings (OSTI)

The project was implemented at the Mill Seat landfill located in the Town of Bergen, Monroe County, New York. The landfill was previously equipped with a landfill gas collection system to collect methane gas produced by the bioreactor landfill and transport it to a central location for end use. A landfill gas to energy facility was also previously constructed at the site, which utilized generator engines, designed to be powered with landfill methane gas, to produce electricity, to be utilized on site and to be sold to the utility grid. The landfill gas generation rate at the site had exceeded the capacity of the existing generators, and the excess landfill gas was therefore being burned at a candlestick flare for destruction. The funded project consisted of the procurement and installation of two (2) additional 800 KW Caterpillar 3516 generator engines, generator sets, switchgear and ancillary equipment.

Barton & Loguidice, P.C.

2010-01-07T23:59:59.000Z

29

Optimization models for joint airline pricing and seat inventory control : multiple products, multiple periods  

E-Print Network (OSTI)

Pricing and revenue management are two essential levers to optimize the sales of an airline's seat inventory and maximize revenues. Over the past few decades, they have generated a great deal of research but have typically ...

Cizaire, Claire (Claire Jia Ling)

2011-01-01T23:59:59.000Z

30

Matching of lowest fare seat availability in airline revenue management systems  

E-Print Network (OSTI)

By enabling passengers to compare easily and book directly from airline inventories, Internetbased ticket distribution has forced airlines to compete for the lowest price level and more importantly, to ensure seat availability ...

Lua, Wenyi Fabian

2007-01-01T23:59:59.000Z

31

Furnace assembly  

DOE Patents (OSTI)

A method of and apparatus for heating test specimens to desired elevated temperatures for irradiation by a high energy neutron source. A furnace assembly is provided for heating two separate groups of specimens to substantially different, elevated, isothermal temperatures in a high vacuum environment while positioning the two specimen groups symmetrically at equivalent neutron irradiating positions.

Panayotou, Nicholas F. (Kennewick, WA); Green, Donald R. (Richland, WA); Price, Larry S. (Pittsburg, CA)

1985-01-01T23:59:59.000Z

32

Investigation of Main Steam Safety Valve Seat/Nozzle Surface Treatments  

Science Conference Proceedings (OSTI)

This report discusses continued research in evaluating the main steam safety valve (MSSV) high first lift phenomenon (seat sticking) experienced in some Dresser 3700 series steam safety valves. Previous EPRI research (Report TR-113560) concluded that the high first lift phenomenon is the result of adhesion of the valve disk to the nozzle seat resulting in additional opening force to separate the disk from the nozzle. Replacement of the disks with disks incorporating pre-oxidized Inconel X-750 material on...

2003-05-30T23:59:59.000Z

33

Seal assembly  

DOE Patents (OSTI)

A seal assembly comprises a tube rotatable about its longitudinal axis and having two longitudinally spaced flanges projecting radially outwardly from the outer surface thereof. Slidably positioned against one of the flanges is a seal ring, and disposed between this seal ring and the other flange are two rings that are forced apart by springs, one of the latter rings being attached to a flexible wall.

Morgan, J.G.; Rennich, M.J.; Whatley, M.E.

1981-03-13T23:59:59.000Z

34

N Reactor Seismic Task Force analysis and fix summary  

Science Conference Proceedings (OSTI)

The N Reactor Safety Enhancement Program (SEP) and the Accelerated Safety Enhancement Program (ASEP) were established to implement recommendations made earlier by study groups assessing the safety of N Reactor. The recommendations which dealt with seismic issues were assigned to Safety Enhancement Programs, Defense Reactor Programs for implementation. A Seismic Task Force was assembled to perform the analyses, design the modifications, direct the performance of the work and provide program management of the effort to seismically qualify the facility. This document identifies the reports published by the task force to resolve each of the seismic issues raised by safety assessments. The reports, in turn, provide a list of recommended fixes (Fixes are potential problems, not resolved in the engineering analyses, which require repair, cleanup or modifications to hardware to establish seismic qualification). The purpose of this report is to provide a guide to seismic fixes implemented by the Seismic Task Force. This information is provided in the form of a ``fix log`` which lists fixes according to the report which recommended them and identifies the work authorization (WA), engineering documentation (Design Change, Field Change Notice or Engineering Change Notice) and acceptance dates for each fix. 5 refs., 6 tabs.

Rainey, T.E.

1989-05-01T23:59:59.000Z

35

DOE Announces Additional Tour Seats Available: Tours of B Reactor at the Hanford Site Begin and End in Richland, Wash.  

Energy.gov (U.S. Department of Energy (DOE))

RICHLAND, Wash. – The U.S. Department of Energy (DOE) has made additional seats available for tours of the B Reactor National Historic Landmark this July and August.

36

Pushrod assembly  

DOE Patents (OSTI)

A pushrod assembly including a carriage mounted on a shaft for movement therealong and carrying a pushrod engageable with a load to be moved. A magnet is mounted on a supporting bracket for movement along such shaft. Means are provided for adjustably spacing said magnet away from said carriage to obtain a selected magnetic attractive or coupling force therebetween. Movement of the supporting bracket and the magnet carried thereby pulls the carriage along with it until the selected magnetic force is exceeded by a resistance load acting on the carriage.

Potter, Jerry D. (Kennewick, WA)

1987-01-01T23:59:59.000Z

37

Pushrod assembly  

DOE Patents (OSTI)

A pushrod assembly including a carriage mounted on a shaft for movement therealong and carrying a pushrod engageable with a load to be moved is described. A magnet is mounted on a supporting bracket for movement along such shaft. Means are provided for adjustably spacing magnet away from the carriage to obtain a selected magnetic attractive or coupling force therebetween. Movement of the supporting bracket and the magnet carried thereby pulls the carriage along with it until the selected magnetic force is exceeded by a resistance load acting on the carriage.

Potter, J.D.

1984-03-30T23:59:59.000Z

38

Seating Arrangement, Group Composition and Competition-driven Interaction: Effects on Students' Performance in Physics  

Science Conference Proceedings (OSTI)

We probe the effect of seating arrangement, group composition and group-based competition on students' performance in Physics using a teaching technique adopted from Mazur's peer instruction method. Ninety eight lectures, involving 2339 students, were conducted across nine learning institutions from February 2006 to June 2009. All the lectures were interspersed with student interaction opportunities (SIO), in which students work in groups to discuss and answer concept tests. Two individual assessments were administered before and after the SIO. The ratio of the post-assessment score to the pre-assessment score and the Hake factor were calculated to establish the improvement in student performance. Using actual assessment results and neural network (NN) modeling, an optimal seating arrangement for a class was determined based on student seating location. The NN model also provided a quantifiable method for sectioning students. Lastly, the study revealed that competition-driven interactions increase within-group cooperation and lead to higher improvement on the students' performance.

Roxas, R. M.; Monterola, C. [National Institute of Physics, University of the Philippines, Diliman, Quezon City 1101 (Philippines); Carreon-Monterola, S. L. [College of Education, University of the Philippines, Diliman, Quezon City 1101 (Philippines)

2010-07-28T23:59:59.000Z

39

Thermocouple assembly  

DOE Patents (OSTI)

A thermocouple assembly includes a thermocouple; a plurality of lead wires extending from the thermocouple; an insulating jacket extending along and enclosing the plurality of leads; and at least one internally sealed area within the insulating jacket to prevent fluid leakage along and within the insulating jacket. The invention also provides a method of preventing leakage of a fluid along and through an insulating jacket of a thermocouple including the steps of a) attaching a plurality of lead wires to a thermocouple; b) adding a heat sensitive pseudo-wire to extend along the plurality of lead wires; c) enclosing the lead wires and pseudo-wire inside an insulating jacket; d) locally heating axially spaced portions of the insulating jacket to a temperature which melts the pseudo-wire and fuses it with an interior surface of the jacket.

Thermos, Anthony Constantine (Greer, SC); Rahal, Fadi Elias (Easley, SC)

2002-01-01T23:59:59.000Z

40

RETORT ASSEMBLY  

DOE Patents (OSTI)

An improved retort assembly useful in the thermal reduction of volatilizable metals such as magnesium and calcium is described. In this process a high vacuum is maintained in the retort, however the retort must be heated to very high temperatures while at the same time the unloading end must bo cooled to condense the metal vapors, therefore the retention of the vacuum is frequently difficult due to the thermal stresses involved. This apparatus provides an extended condenser sleeve enclosed by the retort cover which forms the vacuum seal. Therefore, the seal is cooled by the fluid in the condenser sleeve and the extreme thermal stresses found in previous designs together with the deterioration of the sealing gasket caused by the high temperatures are avoided.

Loomis, C.C.; Ash, W.J.

1957-11-26T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

A means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection  

DOE Patents (OSTI)

This invention is comprised of a piezoelectric valve in a gas delivery system which includes a piezoceramic element bonded to a valve seal and disposed over a valve seat, and retained in position by an O-ring and a retainer; and insulating ball normally biased by a preload spring against the piezoceramic element; and inlet gas port positioned such that upon admission of inlet gas into the valve. The piezoceramic element is positively seated. The inelt gas port is located only on the side of the piezoceramic element opposite the seal.

Wright, K.E.

1993-12-31T23:59:59.000Z

42

Countdown to Fixed Target INSIDE  

NLE Websites -- All DOE Office Websites (Extended Search)

17, 1996 17, 1996 Number 10 Countdown to Fixed Target INSIDE 2 University Close-Up: The University of Illinois 4 Tollestrup Elected to National Academy 5 Bardeen Receives Sakurai Prize 6 Take Your Daughters and Sons to Work Day "At this moment," Fermilab Director John Peoples told the House Subcommittee on Energy and Environment in testimony deliv- ered in Washington on May 8, "Fermilab is in the midst of the transition from collider opera- tions to fixed-target operations. In June, we will begin extracting a beam of protons from the Tevatron, the highest-energy external beam in the world. By directing this beam onto eight targets we will create eight distinct particle beams that will in turn support 10 unique experiments. Although fixed-target experi- ments cannot explore the high-energy frontier

43

Fixed.  

E-Print Network (OSTI)

??In June of 2008 I was involved in a severe accident that altered the way I perceive and interact with objects. The everyday tasks I… (more)

Gehman, Jordan Douglas

2013-01-01T23:59:59.000Z

44

Self assembling magnetic tiles  

E-Print Network (OSTI)

Self assembly is an emerging technology in the field of manufacturing. Inspired by nature's ability to self assembly proteins from amino acids, this thesis attempts to demonstrate self assembly on the macro-scale. The ...

Rabl, Jessica A. (Jessica Ann)

2006-01-01T23:59:59.000Z

45

Public Assembly Buildings  

U.S. Energy Information Administration (EIA) Indexed Site

Assembly Assembly Characteristics by Activity... Public Assembly Public assembly buildings are those in which people gather for social or recreational activities, whether in private or non-private meeting halls. Basic Characteristics [ See also: Equipment | Activity Subcategories | Energy Use ] Public Assembly Buildings... Most public assembly buildings were not large convention centers or entertainment arenas; about two-fifths fell into the smallest size category. About one-fifth of public assembly buildings were government-owned, mostly by local governments; examples of these types of public assembly buildings are libraries and community recreational facilities. Tables: Buildings and Size Data by Basic Characteristics Establishment, Employment, and Age Data by Characteristics

46

Method and system for measuring gate valve clearances and seating force  

DOE Patents (OSTI)

Valve clearances and seating force, as well as other valve operational parameters, are determined by measuring valve stem rotation during opening and closing operations of a translatable gate valve. The magnitude of the stem rotation, and the relative difference between the stem rotation on opening and closing provides valuable data on the valve internals in a non-intrusive manner.

Casada, Donald A. (Knoxville, TN); Haynes, Howard D. (Knoxville, TN); Moyers, John C. (Oak Ridge, TN); Stewart, Brian K. (Burns, TN)

1996-01-01T23:59:59.000Z

47

Subsea production test valve assembly  

SciTech Connect

In the subsea test assembly securable within a blowout preventer stack above a subterranean well and positionable between upper and lower portions of a tubular conduit in fluid communication with a production zone within the well, the test assembly is described including an upper subassembly carriable with the upper conduit portion, a lower subassembly carriable with the lower conduit portion, and valve means in the lower subassembly manipulatable between opened and closed positions to control fluid flow within the conduit. The improvement comprises: the upper subassembly including an upper housing and first rigid dog means fixedly secured to the upper housing; the lower subassembly including a lower housing and second rigid dog means fixedly secured to the lower housing; the first rigid dog means positionable between a latch position for latching the upper and lower subassemblies and an unlatch position for unlatching the upper and lower subassemblies upon rotational movement of the first dog means with respect to the second dog means; and lock means axially movable relative to the first and second dog means from a lock position for limiting rotational movement of the first dog means with respect to the second dog means to an unlock position for allowing the first dog means to rotate relative to the second dog means and unlatch the upper subassembly from the lower subassembly.

Yates, P.D.

1988-03-22T23:59:59.000Z

48

Inlet nozzle assembly  

DOE Patents (OSTI)

An inlet nozzle assembly for directing coolant into the duct tube of a fuel assembly attached thereto. The nozzle assembly includes a shell for housing separable components including an orifice plate assembly, a neutron shield block, a neutron shield plug, and a diffuser block. The orifice plate assembly includes a plurality of stacked plates of differently configurated and sized openings for directing coolant therethrough in a predesigned flow pattern.

Christiansen, D.W.; Karnesky, R.A.; Knight, R.C.; Precechtel, D.R.; Smith, B.G.

1985-09-09T23:59:59.000Z

49

Inlet nozzle assembly  

DOE Patents (OSTI)

An inlet nozzle assembly for directing coolant into the duct tube of a fuel assembly attached thereto. The nozzle assembly includes a shell for housing separable components including an orifice plate assembly, a neutron shield block, a neutron shield plug, and a diffuser block. The orifice plate assembly includes a plurality of stacked plates of differently configurated and sized openings for directing coolant therethrough in a predesigned flow pattern.

Christiansen, David W. (Kennewick, WA); Karnesky, Richard A. (Richland, WA); Precechtel, Donald R. (Richland, WA); Smith, Bob G. (Richland, WA); Knight, Ronald C. (Richland, WA)

1987-01-01T23:59:59.000Z

50

The signing of the 19th Meeting Record. Seated are Alexandre Jakovsky, left, of  

NLE Websites -- All DOE Office Websites (Extended Search)

signing of the 19th Meeting Record. Seated are Alexandre Jakovsky, left, of the Russian Federation signing of the 19th Meeting Record. Seated are Alexandre Jakovsky, left, of the Russian Federation Ministry of Atomic Energy, and John O'Fallon, of the U.S. Department of Energy. Behind them are Fermilab Director John Peoples (far left), U.S. and Russian delegates and Fermilab Directorate staff. Photos by Reidar Hahn by Leila Belkora, Office of Public Affairs When Russian delegates to the Joint Coordinating Committee for Research on the Fundamental Properties of Matter came to Fermilab November 13 and 14 to discuss U.S.- Russian collaboration on high-energy physics research, they had every reason to feel at home. The first high-energy physics experiment ever carried out at Fermilab was a joint Soviet-U.S. collaboration that began taking data "as soon as

51

Head assembly for multiposition borehole extensometer  

DOE Patents (OSTI)

A head assembly for a borehole extensometer and an improved extensometer for measuring subsurface subsidence. A plurality of inflatable anchors provide discrete measurement points. A metering rod is fixed to each of the anchors which are displaced when subsidence occurs, thereby translating the attached rod. The head assembly includes a sprocket wheel rotatably mounted on a standpipe and engaged by a chain which is connected at one end to the metering rod and at the other end to a counterweight. A second sprocket wheel connected to the standpipe also engages the chain and drives a connected potentiometer. The head assembly converts the linear displacement of the metering rod to the rotary motion of the second sprocket wheel, which is measured by the potentiometer, producing a continuous electrical output.

Frank, Donald N. (Livermore, CA)

1983-01-01T23:59:59.000Z

52

Head assembly for multiposition borehole extensometer  

DOE Patents (OSTI)

A head assembly for a borehole extensometer and an improved extensometer for measuring subsurface subsidence. A plurality of inflatable anchors provide discrete measurement points. A metering rod is fixed to each of the anchors which are displaced when subsidence occurs, thereby translating the attached rod. The head assembly includes a sprocket wheel rotatably mounted on a standpipe and engaged by a chain which is connected at one end to the metering rod and at the other end to a counterweight. A second sprocket wheel connected to the standpipe also engages the chain and drives a connected potentiometer. The head assembly converts the linear displacement of the metering rod to the rotary motion of the second sprocket wheel, which is measured by the potentiometer, producing a continuous electrical output.

Frank, D.N.

1981-06-09T23:59:59.000Z

53

Fixed-Point Cell Mini Workshop  

Science Conference Proceedings (OSTI)

... The ITS-90 Fixed-Point Cell Mini-Workshop is scheduled to be given at ... hands-on" laboratory training in the realization of ITS-90 fixed-point cells. ...

2011-10-03T23:59:59.000Z

54

Method and apparatus for monitoring motor operated valve motor output torque and power at valve seating  

DOE Patents (OSTI)

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the valve motor. The method uses voltage measurements on the load side of a deenergizing switch that opens to deenergize the motor to determine, among other things, final motor rotational speed and the decelerating torque at motor deenergization.

Casada, Donald A. (Oak Ridge, TN)

1996-01-01T23:59:59.000Z

55

Method and apparatus for monitoring motor operated valve motor output torque and power at valve seating  

DOE Patents (OSTI)

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the valve motor. The method uses voltage measurements on the load side of a deenergizing switch that opens to deenergize the motor to determine, among other things, final motor rotational speed and the decelerating torque at motor deenergization. 14 figs.

Casada, D.A.

1996-01-16T23:59:59.000Z

56

Membrane module assembly  

DOE Patents (OSTI)

A membrane module assembly is described which is adapted to provide a flow path for the incoming feed stream that forces it into prolonged heat-exchanging contact with a heating or cooling mechanism. Membrane separation processes employing the module assembly are also disclosed. The assembly is particularly useful for gas separation or pervaporation. 2 figures.

Kaschemekat, J.

1994-03-15T23:59:59.000Z

57

Sensor mount assemblies and sensor assemblies  

DOE Patents (OSTI)

Sensor mount assemblies and sensor assemblies are provided. In an embodiment, by way of example only, a sensor mount assembly includes a busbar, a main body, a backing surface, and a first finger. The busbar has a first end and a second end. The main body is overmolded onto the busbar. The backing surface extends radially outwardly relative to the main body. The first finger extends axially from the backing surface, and the first finger has a first end, a second end, and a tooth. The first end of the first finger is disposed on the backing surface, and the tooth is formed on the second end of the first finger.

Miller, David H. (Redondo Beach, CA)

2012-04-10T23:59:59.000Z

58

Crimp sealing of tubes flush with or below a fixed surface  

DOE Patents (OSTI)

An apparatus for crimp sealing and severing tubes flush or below a fixed surface. Tube crimping below a fixed surface requires an asymmetric die and anvil configuration. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. This asymmetric die and anvil is used when a ductile metal tube and valve assembly are attached to a pressure vessel which has a fixed surface around the base of the tube at the pressure vessel. A flat anvil is placed against the tube. Die guides are placed against the tube on a side opposite the anvil. A pinch-off die is inserted into the die guides against the tube. Adequate clearance for inserting the die and anvil around the tube is needed below the fixed surface. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes.

Fischer, J.E.; Walmsley, D.; Wapman, P.D.

1994-12-31T23:59:59.000Z

59

Crimp sealing of tubes flush with or below a fixed surface  

DOE Patents (OSTI)

An apparatus for crimp sealing and severing tubes flush or below a fixed surface. Tube crimping below a fixed surface requires an asymmetric die and anvil configuration. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. This asymmetric die and anvil is used when a ductile metal tube and valve assembly are attached to a pressure vessel which has a fixed surface around the base of the tube at the pressure vessel. A flat anvil is placed against the tube. Die guides are placed against the tube on a side opposite the anvil. A pinch-off die is inserted into the die guides against the tube. Adequate clearance for inserting the die and anvil around the tube is needed below the fixed surface. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. 8 figs.

Fischer, J.E.; Walmsley, D.; Wapman, P.D.

1996-08-20T23:59:59.000Z

60

Lightweight, self-ballasting photovoltaic roofing assembly  

DOE Patents (OSTI)

A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the preformed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

Dinwoodie, T.L.

1998-05-05T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Lightweight, self-ballasting photovoltaic roofing assembly  

DOE Patents (OSTI)

A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the preformed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

Dinwoodie, Thomas L. (Berkeley, CA)

1998-01-01T23:59:59.000Z

62

Modular assembly of a photovoltaic solar energy receiver  

DOE Patents (OSTI)

There is provided a modular assembly of a solar energy concentrator having a photovoltaic energy receiver with passive cooling. Solar cell means are fixedly coupled to a radiant energy concentrator. Tension means bias a large area heat sink against the cell thereby allowing the cell to expand or contract with respect to the heat sink due to differential heat expansion.

Graven, Robert M. (Downers Grove, IL); Gorski, Anthony J. (Lemont, IL); Schertz, William W. (Batavia, IL); Graae, Johan E. A. (Elmhurst, IL)

1978-01-01T23:59:59.000Z

63

SF 6432-LA Fixed Price Latin America  

NLE Websites -- All DOE Office Websites (Extended Search)

CORPORATION SF 6432-LA (072013) SECTION II STANDARD TERMS AND CONDITIONS FOR FIXED PRICE CONTRACTS RENEWABLE ENERGY PROGRAMS IN LATIN AMERICAN COUNTRIES THE FOLLOWING CLAUSES...

64

Filter assembly for metallic and intermetallic tube filters  

Science Conference Proceedings (OSTI)

A filter assembly (60) for holding a filter element (28) within a hot gas cleanup system pressure vessel is provided, containing: a filter housing (62), said filter housing having a certain axial length and having a peripheral sidewall, said sidewall defining an interior chamber (66); a one piece, all metal, fail-safe/regenerator device (68) within the interior chamber (66) of the filter housing (62) and/or extending beyond the axial length of the filter housing, said device containing an outward extending radial flange (71) within the filter housing for seating an essential seal (70), the device also having heat transfer media (72) disposed inside and screens (80) for particulate removal; one compliant gasket (70) positioned next to and above the outward extending radial flange of the fail-safe/regenerator device; and a porous metallic corrosion resistant superalloy type filter element body welded at the bottom of the metal fail-safe/regenerator device.

Alvin, Mary Anne (113 Lehr Ave., Pittsburgh, PA 15223); Lippert, Thomas E. (3205 Cambridge Rd., Murrysville, PA 15668); Bruck, Gerald J. (4469 Sardis Rd., Murrysville, PA 15668); Smeltzer, Eugene E. (R.D. 7, Box 267-I, Italy Rd., Export, PA 15632-9621)

2001-01-01T23:59:59.000Z

65

Public Assembly Buildings  

U.S. Energy Information Administration (EIA) Indexed Site

buildings. Since they comprised 7 percent of commercial floorspace, this means that their energy intensity was just slightly below the commercial average. Public assembly buildings...

66

Fix-Up Loan | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fix-Up Loan Fix-Up Loan Fix-Up Loan < Back Eligibility Low-Income Residential Multi-Family Residential Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Construction Design & Remodeling Heating Insulation Windows, Doors, & Skylights Energy Sources Buying & Making Electricity Solar Wind Sealing Your Home Appliances & Electronics Water Heating Maximum Rebate $35,000 (see exceptions below) Unsecured loans: $15,000 Program Info Funding Source Fix-Up Fund State Minnesota Program Type State Loan Program Rebate Amount $2,000 - $50,000 Provider Minnesota Housing Finance Agency The Minnesota Housing Finance Agency's (MHFA) Fix-up Loan provides low-interest financing for energy conservation and other basic improvements

67

Turbine disc sealing assembly  

SciTech Connect

A disc seal assembly for use in a turbine engine. The disc seal assembly includes a plurality of outwardly extending sealing flange members that define a plurality of fluid pockets. The sealing flange members define a labyrinth flow path therebetween to limit leakage between a hot gas path and a disc cavity in the turbine engine.

Diakunchak, Ihor S.

2013-03-05T23:59:59.000Z

68

Superconductive radiofrequency window assembly  

DOE Patents (OSTI)

The present invention is a superconducting radiofrequency window assembly for use in an electron beam accelerator. The SRF window assembly has a superconducting metal-ceramic design. The SRF window assembly comprises a superconducting frame, a ceramic plate having a superconducting metallized area, and a superconducting eyelet for sealing plate into frame. The plate is brazed to eyelet which is then electron beam welded to frame. A method for providing a ceramic object mounted in a metal member to withstand cryogenic temperatures is also provided. The method involves a new metallization process for coating a selected area of a ceramic object with a thin film of a superconducting material. Finally, a method for assembling an electron beam accelerator cavity utilizing the SRF window assembly is provided. The procedure is carried out within an ultra clean room to minimize exposure to particulates which adversely affect the performance of the cavity within the electron beam accelerator. 11 figs.

Phillips, H.L.; Elliott, T.S.

1998-05-19T23:59:59.000Z

69

Superconducting radiofrequency window assembly  

DOE Patents (OSTI)

The present invention is a superconducting radiofrequency window assembly for use in an electron beam accelerator. The srf window assembly has a superconducting metal-ceramic design. The srf window assembly comprises a superconducting frame, a ceramic plate having a superconducting metallized area, and a superconducting eyelet for sealing plate into frame. The plate is brazed to eyelet which is then electron beam welded to frame. A method for providing a ceramic object mounted in a metal member to withstand cryogenic temperatures is also provided. The method involves a new metallization process for coating a selected area of a ceramic object with a thin film of a superconducting material. Finally, a method for assembling an electron beam accelerator cavity utilizing the srf window assembly is provided. The procedure is carried out within an ultra clean room to minimize exposure to particulates which adversely affect the performance of the cavity within the electron beam accelerator. 11 figs.

Phillips, H.L.; Elliott, T.S.

1997-03-11T23:59:59.000Z

70

Automated Assembly Using Feature Localization  

E-Print Network (OSTI)

Automated assembly of mechanical devices is studies by researching methods of operating assembly equipment in a variable manner; that is, systems which may be configured to perform many different assembly operations ...

Gordon, Steven Jeffrey

1986-12-01T23:59:59.000Z

71

DC source assemblies  

SciTech Connect

Embodiments of DC source assemblies of power inverter systems of the type suitable for deployment in a vehicle having an electrically grounded chassis are provided. An embodiment of a DC source assembly comprises a housing, a DC source disposed within the housing, a first terminal, and a second terminal. The DC source also comprises a first capacitor having a first electrode electrically coupled to the housing, and a second electrode electrically coupled to the first terminal. The DC source assembly further comprises a second capacitor having a first electrode electrically coupled to the housing, and a second electrode electrically coupled to the second terminal.

Campbell, Jeremy B; Newson, Steve

2013-02-26T23:59:59.000Z

72

Test of the Fixed Anvil Temperature Hypothesis  

Science Conference Proceedings (OSTI)

The fixed anvil temperature (FAT) hypothesis is examined based on the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS)-based cloud-top temperature (CTT) in conjunction with the tropical atmospheric profiles and sea surface temperature (...

Yue Li; Ping Yang; Gerald R. North; Andrew Dessler

2012-07-01T23:59:59.000Z

73

Fixed-Parameter tractability, a prehistory,  

Science Conference Proceedings (OSTI)

Many of the foundational parameterized tenets discussed in this festschrift actually predate by over a decade the first systematic treatments of fixed-parameter tractability. In this frank, firsthand account I will, to the best of my recollection, describe ...

Michael A. Langston

2012-01-01T23:59:59.000Z

74

TOB Module Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

SiTracker Home Page Participating Institutions and Principal Contacts Useful Links Notes Images TOB Module Assembly and Testing Project TOB Integration Data Tracker Offline DQM LHC Fluence Calculator Total US Modules Tested Graph Total US Modules Tested Graph Total US Modules Tested Total US Modules Tested US Modules Tested Graph US Modules Tested Graph US Modules Tested US Modules Tested Rod Assembly TOB Modules on a Rod TOB Rod Insertion Installation of a TOB Rod Completed TOB Completed Tracker Outer Barrel TOB Module Assembly and Testing Project All 5208 modules of the CMS Tracker Outer Barrel were assembled and tested at two production sites in the US: the Fermi National Accelerator Laboratory and the University of California at Santa Barbara. The modules were delivered to CERN in the form of rods, with the last shipment taking

75

Silicon solar cell assembly  

DOE Patents (OSTI)

A silicon solar cell assembly comprising a large, thin silicon solar cell bonded to a metal mount for use when there exists a mismatch in the thermal expansivities of the device and the mount.

Burgess, Edward L. (Albuquerque, NM); Nasby, Robert D. (Albuquerque, NM); Schueler, Donald G. (Albuquerque, NM)

1979-01-01T23:59:59.000Z

76

High speed door assembly  

DOE Patents (OSTI)

This invention is comprised of a high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

Shapiro, C.

1991-12-31T23:59:59.000Z

77

Recuperator assembly and procedures  

DOE Patents (OSTI)

A construction of recuperator core segments is provided which insures proper assembly of the components of the recuperator core segment, and of a plurality of recuperator core segments. Each recuperator core segment must be constructed so as to prevent nesting of fin folds of the adjacent heat exchanger foils of the recuperator core segment. A plurality of recuperator core segments must be assembled together so as to prevent nesting of adjacent fin folds of adjacent recuperator core segments.

Kang, Yungmo (La Canada Flintridge, CA); McKeirnan, Jr., Robert D. (Westlake Village, CA)

2008-08-26T23:59:59.000Z

78

A comparison of carbide fracture during fixed depth and fixed load scratch tests  

SciTech Connect

In order to simulate abrasion of dual-phase materials containing large carbides under fixed depth conditions an apparatus has been designed and used to perform scratch tests at a fixed depth of cut on such materials. The scratch test consists of two support arms tipped with small steel balls held in contact with surface by /sup 700/ g, while the scratch tool is mounted on the tip of a central arm whose adjustable length allow control of the depth of cut. The scratch tool does not deflect significant when it encounters a large carbide. Scratch tests with the new apparatus have been performed on Co-base Stellite alloys containing large Cr-rich carbides, using individual particles of alumina as scratch tools to generate fixed depth scratches. A in situ SEM scratch test apparatus has also been used to genrate fixed load scratches. Comparison of the scratches shows that for comparable average scratch depths, under fixed load conditions the scratch tool deflects over the carbides without causing fracture, but that since it cannot deflect under fixed depth conditions it induces gross carbide fracture. Results suggest that the fixed depth scratch test can be successfully employed to simulate fixed depth abrasion, which has been previously shown to generate gross carbide fracture in these alloys. The in situ SEM scratch test simulates fixed load abrasion conditions such as those which occur in rubber wheel abrasion tests. 12 refs., 9 figs

Prasad, S.V.; Kosel, T.H.

1985-01-01T23:59:59.000Z

79

Blade platform seal for ceramic/metal rotor assembly  

DOE Patents (OSTI)

A combination ceramic and metal turbine rotor for use in high temperature gas turbine engines includes a metal rotor disc having a rim with a plurality of circumferentially spaced blade root retention slots therein to receive a plurality of ceramic blades, each including side platform segments thereon and a dovetail configured root slidably received in one of the slots. Adjacent ones of the platform segments including edge portions thereon closely spaced when the blades are assembled to form expansion gaps in an annular flow surface for gas passage through the blades and wherein the assembly further includes a plurality of unitary seal members on the rotor connected to its rim and each including a plurality of spaced, axially extending, flexible fingers that underlie and conform to the edge portions of the platform segments and which are operative at turbine operating temperatures and speeds to distribute loading on the platform segments as the fingers are seated against the underside of the blade platforms to seal the gaps without undesirably stressing thin web ceramic sections of the platform.

Wertz, John L. (Indianapolis, IN)

1982-01-01T23:59:59.000Z

80

Superconducting radiofrequency window assembly  

DOE Patents (OSTI)

The present invention is a superconducting radiofrequency window assembly for use in an electron beam accelerator. The srf window assembly (20) has a superconducting metal-ceramic design. The srf window assembly (20) comprises a superconducting frame (30), a ceramic plate (40) having a superconducting metallized area, and a superconducting eyelet (50) for sealing plate (40) into frame (30). The plate (40) is brazed to eyelet (50) which is then electron beam welded to frame (30). A method for providing a ceramic object mounted in a metal member to withstand cryogenic temperatures is also provided. The method involves a new metallization process for coating a selected area of a ceramic object with a thin film of a superconducting material. Finally, a method for assembling an electron beam accelerator cavity utilizing the srf window assembly is provided. The procedure is carried out within an ultra clean room to minimize exposure to particulates which adversely affect the performance of the cavity within the electron beam accelerator.

Phillips, Harry L. (Seaford, VA); Elliott, Thomas S. (Yorktown, VA)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Superconductive radiofrequency window assembly  

DOE Patents (OSTI)

The present invention is a superconducting radiofrequency window assembly for use in an electron beam accelerator. The srf window assembly (20) has a superconducting metal-ceramic design. The srf window assembly (20) comprises a superconducting frame (30), a ceramic plate (40) having a superconducting metallized area, and a superconducting eyelet (50) for sealing plate (40) into frame (30). The plate (40) is brazed to eyelet (50) which is then electron beam welded to frame (30). A method for providing a ceramic object mounted in a metal member to withstand cryogenic temperatures is also provided. The method involves a new metallization process for coating a selected area of a ceramic object with a thin film of a superconducting material. Finally, a method for assembling an electron beam accelerator cavity utilizing the srf window assembly is provided. The procedure is carried out within an ultra clean room to minimize exposure to particulates which adversely affect the performance of the cavity within the electron beam accelerator.

Phillips, Harry Lawrence (Seaford, VA); Elliott, Thomas S. (Yorktown, VA)

1998-01-01T23:59:59.000Z

82

Photovoltaic self-assembly.  

DOE Green Energy (OSTI)

This late-start LDRD was focused on the application of chemical principles of self-assembly on the ordering and placement of photovoltaic cells in a module. The drive for this chemical-based self-assembly stems from the escalating prices in the 'pick-and-place' technology currently used in the MEMS industries as the size of chips decreases. The chemical self-assembly principles are well-known on a molecular scale in other material science systems but to date had not been applied to the assembly of cells in a photovoltaic array or module. We explored several types of chemical-based self-assembly techniques, including gold-thiol interactions, liquid polymer binding, and hydrophobic-hydrophilic interactions designed to array both Si and GaAs PV chips onto a substrate. Additional research was focused on the modification of PV cells in an effort to gain control over the facial directionality of the cells in a solvent-based environment. Despite being a small footprint research project worked on for only a short time, the technical results and scientific accomplishments were significant and could prove to be enabling technology in the disruptive advancement of the microelectronic photovoltaics industry.

Lavin, Judith; Kemp, Richard Alan; Stewart, Constantine A.

2010-10-01T23:59:59.000Z

83

Power module assembly  

SciTech Connect

A power module assembly of the type suitable for deployment in a vehicular power inverter, wherein the power inverter has a grounded chassis, is provided. The power module assembly comprises a conductive base layer electrically coupled to the chassis, an insulating layer disposed on the conductive base layer, a first conductive node disposed on the insulating layer, a second conductive node disposed on the insulating layer, wherein the first and second conductive nodes are electrically isolated from each other. The power module assembly also comprises a first capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the first conductive node, and further comprises a second capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the second conductive node.

Campbell, Jeremy B. (Torrance, CA); Newson, Steve (Redondo Beach, CA)

2011-11-15T23:59:59.000Z

84

Low inductance connector assembly  

DOE Patents (OSTI)

A busbar connector assembly for coupling first and second terminals on a two-terminal device to first and second contacts on a power module is provided. The first terminal resides proximate the first contact and the second terminal resides proximate the second contact. The assembly comprises a first bridge having a first end configured to be electrically coupled to the first terminal, and a second end configured to be electrically coupled to the second contact, and a second bridge substantially overlapping the first bridge and having a first end electrically coupled to the first contact, and a second end electrically coupled to the second terminal.

Holbrook, Meghan Ann; Carlson, Douglas S

2013-07-09T23:59:59.000Z

85

Rotary shaft sealing assembly  

DOE Patents (OSTI)

A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

Dietle, Lannie L. (Houston, TX); Schroeder, John E. (Richmond, TX); Kalsi, Manmohan S. (Houston, TX); Alvarez, Patricio D. (Richmond, TX)

2010-09-21T23:59:59.000Z

86

Rotary shaft sealing assembly  

DOE Patents (OSTI)

A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

Dietle, Lannie L; Schroeder, John E; Kalsi, Manmohan S; Alvarez, Patricio D

2013-08-13T23:59:59.000Z

87

Solar collector assembly  

Science Conference Proceedings (OSTI)

A solar collector assembly includes shingles which have integral tubes projecting therefrom, and which are mounted in overlapping parallel array. Mounting brackets for the shingles are engaged on roof rafters or the like, and interlocked light transmissive plates overlie the shingles. The plates are also engaged with shingle components. A special fitting for the tube ends is provided.

Murphy, J.A.

1980-09-09T23:59:59.000Z

88

Corium protection assembly  

DOE Patents (OSTI)

A corium protection assembly includes a perforated base grid disposed below a pressure vessel containing a nuclear reactor core and spaced vertically above a containment vessel floor to define a sump therebetween. A plurality of layers of protective blocks are disposed on the grid for protecting the containment vessel floor from the corium.

Gou, Perng-Fei (Saratoga, CA); Townsend, Harold E. (Campbell, CA); Barbanti, Giancarlo (Sirtori, IT)

1994-01-01T23:59:59.000Z

89

Segmented stator assembly  

DOE Patents (OSTI)

An electric machine and stator assembly are provided that include a continuous stator portion having stator teeth, and a tooth tip portion including tooth tips corresponding to the stator teeth of the continuous stator portion, respectively. The tooth tip portion is mounted onto the continuous stator portion.

Lokhandwalla, Murtuza; Alexander, James Pellegrino; El-Refaie, Ayman Mohamed Fawzi; Shah, Manoj Ramprasad; Quirion, Owen Scott

2013-04-02T23:59:59.000Z

90

NEUTRONIC REACTOR BURIAL ASSEMBLY  

DOE Patents (OSTI)

A burial assembly is shown whereby an entire reactor core may be encased with lead shielding, withdrawn from the reactor site and buried. This is made possible by a five-piece interlocking arrangement that may be easily put together by remote control with no aligning of bolt holes or other such close adjustments being necessary.

Treshow, M.

1961-05-01T23:59:59.000Z

91

Evaluation of wear resistant ceramic valve seats in gas-fueled power generation engines. Topical report, December 1991-April 1994  

SciTech Connect

This project is directed at the reduction of valve recession in natural gas-fueled engines. Ceramic valve seat inserts have been procured, installed in a Caterpillar G3516 natural gas generator set, and tested for 1000 hours. Two different silicon nitride materials are being utilized for the valve seats in addition to stock Eatonite metallic inserts. Three valve face materials are being tested. These include stock Caterpillar stellite 1 faced, stellite 6 faced, and unfaced valves. A test matrix was used to allow comparison of all three valve face materials in combination with all three insert materials. The testing is scheduled to continue for an additional 7000 hours. No problems have been encountered with the test materials. In general, it has been shown that two types of silicon nitride materials have at least short term durability in engine operation. Neither material has exhibited any deficiencies thus far. An economic analysis spreadsheet has been created to calculate potential cost savings potential using ceramic valve seat inserts. Valve recession data for the first 1000 hours shows expected trends. Exhaust valve positions are wearing more than intake valve positions. If the intake positions and all positions with unfaced valve are ignored, then ceramic inserts paired with Stellite 1 valves show the most wear.

Burrahm, R.W.; Branecky, R.J.; Sui, P.C.; Latusek, J.P.; Hsu, S.M.

1994-12-01T23:59:59.000Z

92

Flying by the seat of their pants: what can high frequency trading learn from aviation?  

Science Conference Proceedings (OSTI)

As we build increasingly large scale systems (and systems of systems), the level of complexity is also rising. We still expect people to intervene when things go wrong, however, and to diagnose and fix the problems. Aviation has a history of developing ... Keywords: flash crash, high frequency trading, human-in-the-loop, ironies of automation, socio-technical systems

Gordon Baxter, John Cartlidge

2013-05-01T23:59:59.000Z

93

Protection Programming Defensive Planning for Fixed Facilities  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NOT MEASUREMENT NOT MEASUREMENT SENSITIVE DOE STD-1207-2012 December 2012 DOE STANDARD Protection Program Defensive Planning For Fixed Facilities U.S. Department of Energy AREA SANS Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE STD-1207-2012 This Page Intentionally Left Blank ii DOE STD-1207-2012 TABLE OF CONTENTS FOREWORD..................................................................................................................................v PROTECTION PROGRAM DEFENSIVE PLANNING ..........................................................1 1. SCOPE............................................................................................................................ 1 2. PURPOSE. ..................................................................................................................... 1

94

Vacuum breaker valve assembly  

DOE Patents (OSTI)

Breaker valve assemblies for a simplified boiling water nuclear reactor are described. The breaker valve assembly, in one form, includes a valve body and a breaker valve. The valve body includes an interior chamber, and an inlet passage extends from the chamber and through an inlet opening to facilitate transporting particles from outside of the valve body to the interior chamber. The breaker valve is positioned in the chamber and is configured to substantially seal the inlet opening. Particularly, the breaker valve includes a disk which is sized to cover the inlet opening. The disk is movably coupled to the valve body and is configured to move substantially concentrically with respect to the valve opening between a first position, where the disk completely covers the inlet opening, and a second position, where the disk does not completely cover the inlet opening.

Thompson, Jeffrey L. (San Jose, CA); Upton, Hubert Allen (Morgan Hill, CA)

1999-04-27T23:59:59.000Z

95

Vacuum breaker valve assembly  

Science Conference Proceedings (OSTI)

Breaker valve assemblies for a simplified boiling water nuclear reactor are described. The breaker valve assembly, in one form, includes a valve body and a breaker valve. The valve body includes an interior chamber, and an inlet passage extends from the chamber and through an inlet opening to facilitate transporting particles from outside of the valve body to the interior chamber. The breaker valve is positioned in the chamber and is configured to substantially seal the inlet opening. Particularly, the breaker valve includes a disk which is sized to cover the inlet opening. The disk is movably coupled to the valve body and is configured to move substantially concentrically with respect to the valve opening between a first position, where the disk completely covers the inlet opening, and a second position, where the disk does not completely cover the inlet opening. 1 fig.

Thompson, J.L.; Upton, H.A.

1999-04-27T23:59:59.000Z

96

Low inductance busbar assembly  

DOE Patents (OSTI)

A busbar assembly for electrically coupling first and second busbars to first and second contacts, respectively, on a power module is provided. The assembly comprises a first terminal integrally formed with the first busbar, a second terminal integrally formed with the second busbar and overlapping the first terminal, a first bridge electrode having a first tab electrically coupled to the first terminal and overlapping the first and second terminals, and a second tab electrically coupled to the first contact, a second bridge electrode having a third tab electrically coupled to the second terminal, and overlapping the first and second terminals and the first tab, and a fourth tab electrically coupled to the second contact, and a fastener configured to couple the first tab to the first terminal, and the third tab to the second terminal.

Holbrook, Meghan Ann (Manhattan Beach, CA)

2010-09-21T23:59:59.000Z

97

Turbine seal assembly  

SciTech Connect

A seal assembly that limits gas leakage from a hot gas path to one or more disc cavities in a turbine engine. The seal assembly includes a seal apparatus that limits gas leakage from the hot gas path to a respective one of the disc cavities. The seal apparatus comprises a plurality of blade members rotatable with a blade structure. The blade members are associated with the blade structure and extend toward adjacent stationary components. Each blade member includes a leading edge and a trailing edge, the leading edge of each blade member being located circumferentially in front of the blade member's corresponding trailing edge in a direction of rotation of the turbine rotor. The blade members are arranged such that a space having a component in a circumferential direction is defined between adjacent circumferentially spaced blade members.

Little, David A.

2013-04-16T23:59:59.000Z

98

FLUORINE CELL ANODE ASSEMBLY  

DOE Patents (OSTI)

An improved anode assembly is deslgned for use in electrolytlc cells ln the productlon of hydrogen and fluorlne from a moIten electrolyte. The anode assembly comprises a copper post, a copper hanger supported by the post, a plurality of carbon anode members, and bolt means for clamplng half of the anode members to one slde of the hanger and for clamplng the other half of the anode members to the other slde of the hanger. The heads of the clamplng bolts are recessed withln the anode members and carbon plugs are inserted ln the recesses above the bolt heads to protect the boIts agalnst corroslon. A copper washer is provided under the head of each clamplng boIt such that the anode members can be tightly clamped to the hanger with a resultant low anode jolnt resistance. (AEC)

Cable, R.E.; Goode, W.B. Jr.; Henderson, W.K.; Montillon, G.H.

1962-06-26T23:59:59.000Z

99

Assembly of Energy Nanomaterials via Water Based ...  

Science Conference Proceedings (OSTI)

Page 1. Assembly of Energy Nanomaterials via Water Based Assembly Paula T. Hammond Department of Chemical Engineering ...

100

Nuclear core and fuel assemblies  

DOE Patents (OSTI)

A fast flux nuclear core of a plurality of rodded, open-lattice assemblies having a rod pattern rotated relative to a rod support structure pattern. Elongated fuel rods are oriented on a triangular array and laterally supported by grid structures positioned along the length of the assembly. Initial inter-assembly contact is through strongbacks at the corners of the support pattern and peripheral fuel rods between adjacent assemblies are nested so as to maintain a triangular pitch across a clearance gap between the other portions of adjacent assemblies. The rod pattern is rotated relative to the strongback support pattern by an angle .alpha. equal to sin .sup.-1 (p/2c), where p is the intra-assembly rod pitch and c is the center-to-center spacing among adjacent assemblies.

Downs, Robert E. (Monroeville, PA)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Hydromechanical transmission with compound planetary assembly  

DOE Patents (OSTI)

A power transmission having three distinct ranges: (1) hydrostatic, (2) simple power-split hydromechanical, and (3) compound power-split hydromechanical. A single compound planetary assembly has two sun gears, two ring gears, and a single carrier with two sets of elongated planet gears. The two sun gears may be identical in size, and the two ring gears may be identical in size. A speed-varying module in driving relationship to the first sun gear is clutchable, in turn, to (1) the input shaft and (2) the second sun gear. The speed-varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being the one clutchable to either the input shaft or to the second sun gear. The other unit, which may have a fixed stroke, is connected in driving relation to the first sun gear. A brake grounds the carrier in the first range and in reverse and causes drive to be delivered to the output shaft through the first ring gear in a hydrostatic mode, the first ring gear being rigidly connected to the output shaft. The input shaft is also clutchable to the second ring gear of the compound planetary assembly.

Orshansky, Jr., deceased, Elias (late of San Francisco, CA); Weseloh, William E. (San Diego, CA)

1980-01-01T23:59:59.000Z

102

FIXED-PRICE CONTRACTING FOR DEPARTMENT OF ENERGY CLEANUP ACTIVITIES...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FIXED-PRICE CONTRACTING FOR DEPARTMENT OF ENERGY CLEANUP ACTIVITIES, CR-B-02-01 FIXED-PRICE CONTRACTING FOR DEPARTMENT OF ENERGY CLEANUP ACTIVITIES, CR-B-02-01 As part of its...

103

Fixed and Random Effects in Nonlinear Models  

E-Print Network (OSTI)

This paper surveys recently developed approaches to analyzing panel data with nonlinear models. We summarize a number of results on estimation of fixed and random effects models in nonlinear modeling frameworks such as discrete choice, count data, duration, censored data, sample selection, stochastic frontier and, generally, models that are nonlinear both in parameters and variables. We show that notwithstanding their methodological shortcomings, fixed effects are much more practical than heretofore reflected in the literature. For random effects models, we develop an extension of a random parameters model that has been used extensively, but only in the discrete choice literature. This model subsumes the random effects model, but is far more flexible and general, and overcomes some of the familiar shortcomings of the simple additive random effects model as usually formulated. Once again, the range of applications is extended beyond the familiar discrete choice setting. Finally, we draw together several strands of applications of a model that has taken a semiparametric approach to individual heterogeneity in panel data, the latent class model. A fairly straightforward extension is suggested that should make this more widely useable by practitioners. Many of the underlying results already appear in the literature, but, once again, the range of applications is smaller than it could be.

William Greene

2001-01-01T23:59:59.000Z

104

The need for a new approach to regulating fixed networks  

Science Conference Proceedings (OSTI)

The increasing danger of excess capacity in the regulated fixed networks calls into question the established long-standing pricing standards for wholesale services based on forward-looking long-run incremental costs (FL-LRAIC). Within the EU ''Regulatory ... Keywords: Capacity-based charges, Excess capacity, Fixed-network regulation, Fixed-to-mobile substitution, Retail minus

Wolfgang Briglauer; Ingo Vogelsang

2011-03-01T23:59:59.000Z

105

Microchannel heat sink assembly  

DOE Patents (OSTI)

The present invention provides a microchannel heat sink with a thermal range from cryogenic temperatures to several hundred degrees centigrade. The heat sink can be used with a variety of fluids, such as cryogenic or corrosive fluids, and can be operated at a high pressure. The heat sink comprises a microchannel layer preferably formed of silicon, and a manifold layer preferably formed of glass. The manifold layer comprises an inlet groove and outlet groove which define an inlet manifold and an outlet manifold. The inlet manifold delivers coolant to the inlet section of the microchannels, and the outlet manifold receives coolant from the outlet section of the microchannels. In one embodiment, the manifold layer comprises an inlet hole extending through the manifold layer to the inlet manifold, and an outlet hole extending through the manifold layer to the outlet manifold. Coolant is supplied to the heat sink through a conduit assembly connected to the heat sink. A resilient seal, such as a gasket or an O-ring, is disposed between the conduit and the hole in the heat sink in order to provide a watertight seal. In other embodiments, the conduit assembly may comprise a metal tube which is connected to the heat sink by a soft solder. In still other embodiments, the heat sink may comprise inlet and outlet nipples. The present invention has application in supercomputers, integrated circuits and other electronic devices, and is suitable for cooling materials to superconducting temperatures. 13 figs.

Bonde, W.L.; Contolini, R.J.

1992-03-24T23:59:59.000Z

106

Gas separation membrane module assembly  

SciTech Connect

A gas-separation membrane module assembly and a gas-separation process using the assembly. The assembly includes a set of tubes, each containing gas-separation membranes, arranged within a housing. The housing contains a tube sheet that divides the space within the housing into two gas-tight spaces. A permeate collection system within the housing gathers permeate gas from the tubes for discharge from the housing.

Wynn, Nicholas P (Palo Alto, CA); Fulton, Donald A. (Fairfield, CA)

2009-03-31T23:59:59.000Z

107

Multi-position photovoltaic assembly  

Science Conference Proceedings (OSTI)

The invention is directed to a PV assembly, for use on a support surface, comprising a base, a PV module, a multi-position module support assembly, securing the module to the base at shipping and inclined-use angles, a deflector, a multi-position deflector support securing the deflector to the base at deflector shipping and deflector inclined-use angles, the module and deflector having opposed edges defining a gap therebetween. The invention permits transport of the PV assemblies in a relatively compact form, thus lowering shipping costs, while facilitating installation of the PV assemblies with the PV module at the proper inclination.

Dinwoodie, Thomas L. (Piedmont, CA)

2003-03-18T23:59:59.000Z

108

Next-generation transcriptome assembly  

Science Conference Proceedings (OSTI)

Transcriptomics studies often rely on partial reference transcriptomes that fail to capture the full catalog of transcripts and their variations. Recent advances in sequencing technologies and assembly algorithms have facilitated the reconstruction of the entire transcriptome by deep RNA sequencing (RNA-seq), even without a reference genome. However, transcriptome assembly from billions of RNA-seq reads, which are often very short, poses a significant informatics challenge. This Review summarizes the recent developments in transcriptome assembly approaches - reference-based, de novo and combined strategies-along with some perspectives on transcriptome assembly in the near future.

Martin, Jeffrey A.; Wang, Zhong

2011-09-01T23:59:59.000Z

109

CGAL: computing genome assembly likelihoods  

E-Print Network (OSTI)

SM, Lei M, Li J, et al: Genome sequencing in microfabricatedDe novo bacterial genome sequencing: millions of very shortGenome assembly, evaluation, likelihood, sequencing.

Rahman, Atif; Pachter, Lior

2013-01-01T23:59:59.000Z

110

Fixed Points for Stochastic Open Chemical Systems  

E-Print Network (OSTI)

In the first part of this paper we give a short review of the hierarchy of stochastic models, related to physical chemistry. In the basement of this hierarchy there are two models --- stochastic chemical kinetics and the Kac model for Boltzman equation. Classical chemical kinetics and chemical thermodynamics are obtained as some scaling limits in the models, introduced below. In the second part of this paper we specify some simple class of open chemical reaction systems, where one can still prove the existence of attracting fixed points. For example, Michaelis\\tire Menten kinetics belongs to this class. At the end we present a simplest possible model of the biological network. It is a network of networks (of closed chemical reaction systems, called compartments), so that the only source of nonreversibility is the matter exchange (transport) with the environment and between the compartments. Keywords: chemical kinetics, chemical thermodynamics, Kac model, mathematical biology

Malyshev, V A

2011-01-01T23:59:59.000Z

111

Fixed Points for Stochastic Open Chemical Systems  

E-Print Network (OSTI)

In the first part of this paper we give a short review of the hierarchy of stochastic models, related to physical chemistry. In the basement of this hierarchy there are two models --- stochastic chemical kinetics and the Kac model for Boltzman equation. Classical chemical kinetics and chemical thermodynamics are obtained as some scaling limits in the models, introduced below. In the second part of this paper we specify some simple class of open chemical reaction systems, where one can still prove the existence of attracting fixed points. For example, Michaelis\\tire Menten kinetics belongs to this class. At the end we present a simplest possible model of the biological network. It is a network of networks (of closed chemical reaction systems, called compartments), so that the only source of nonreversibility is the matter exchange (transport) with the environment and between the compartments. Keywords: chemical kinetics, chemical thermodynamics, Kac model, mathematical biology

V. A. Malyshev

2011-12-16T23:59:59.000Z

112

Photovoltaic cell assembly  

DOE Patents (OSTI)

A photovoltaic assembly for converting high intensity solar radiation into lectrical energy in which a solar cell is separated from a heat sink by a thin layer of a composite material which has excellent dielectric properties and good thermal conductivity. This composite material is a thin film of porous Al.sub.2 O.sub.3 in which the pores have been substantially filled with an electrophoretically-deposited layer of a styrene-acrylate resin. This composite provides electrical breakdown strengths greater than that of a layer consisting essentially of Al.sub.2 O.sub.3 and has a higher thermal conductivity than a layer of styrene-acrylate alone.

Beavis, Leonard C. (Albuquerque, NM); Panitz, Janda K. G. (Edgewood, NM); Sharp, Donald J. (Albuquerque, NM)

1990-01-01T23:59:59.000Z

113

Photovoltaic cell assembly  

DOE Patents (OSTI)

A photovoltaic assembly for converting high intensity solar radiation into electrical energy in which a solar cell is separated from a heat sink by a thin layer of a composite material which has excellent dielectric properties and good thermal conductivity. This composite material is a thin film of porous Al{sub 2}O{sub 3} in which the pores have been substantially filled with an electrophoretically-deposited layer of a styrene-acrylate resin. This composite provides electrical breakdown strengths greater than that of a layer consisting essentially of Al{sub 2}O{sub 3} and has a higher thermal conductivity than a layer of styrene-acrylate alone. 2 figs.

Beavis, L.C.; Panitz, J.K.G.; Sharp, D.J.

1989-09-26T23:59:59.000Z

114

Rotatable seal assembly  

DOE Patents (OSTI)

An assembly is provided for rotatably supporting a rotor on a stator so that vacuum chambers in the rotor and stator remain in communication while the chambers are sealed from ambient air, which enables the use of a ball bearing or the like to support most of the weight of the rotor. The apparatus includes a seal device mounted on the rotor to rotate therewith, but shiftable in position on the rotor while being sealed to the rotor as by an O-ring. The seal device has a flat face that is biased towards a flat face on the stator, and pressurized air is pumped between the faces to prevent contact between them while spacing them a small distance apart to avoid the inflow of large amounts of air between the faces and into the vacuum chambers.

Logan, Clinton M. (Pleasanton, CA); Garibaldi, Jack L. (Livermore, CA)

1982-01-01T23:59:59.000Z

115

Switchable heat pipe assembly  

SciTech Connect

The heat pipe assembly is formed into an H-shape or a Y-shape. The H-shaped configuration comprises two heat pipes, each having condenser and evaporator sections with wicking therein coupled by a tube with wick at their evaporator sections. The Y-shaped configuration utilizes a common evaporator section in place of the two evaporator sections of the H-shaped configuration. In both configurations, the connection between the vapor spaces of the two heat pipes equalizes vapor pressure within the heat pipes. Although both heat pipes have wicks, they have sufficient fluid only to saturate a single pipe. If heat is applied to the condenser section of one of the pipes, this heat pipe becomes inoperative since all the fluid is transferred to the second pipe which can operate with a lower thermal load.

Sun, T.H.; Basiulis, A.

1977-02-15T23:59:59.000Z

116

Fuel cell sub-assembly  

DOE Patents (OSTI)

A fuel cell sub-assembly comprising a plurality of fuel cells, a first section of a cooling means disposed at an end of the assembly and means for connecting the fuel cells and first section together to form a unitary structure.

Chi, Chang V. (Brookfield, CT)

1983-01-01T23:59:59.000Z

117

Moisture Research - Optimizing Wall Assemblies  

SciTech Connect

The Consortium for Advanced Residential Buildings (CARB) evaluated several different configurations of wall assemblies to determine the accuracy of moisture modeling and make recommendations to ensure durable, efficient assemblies. WUFI and THERM were used to model the hygrothermal and heat transfer characteristics of these walls.

Arena, L.; Mantha, P.

2013-05-01T23:59:59.000Z

118

Stator and method of assembly  

DOE Patents (OSTI)

The present application provides a stator. The stator may include a number of poles and a stator tip and cooling assembly. The stator tip and cooling assembly may include a number of stator tips with a number of cooling tubes adjacent thereto such that the stator tips align with the poles and the cooling tubes cool the poles.

Alexander, James Pellegrino; El-Refaie, Ayman Mohamed Fawzi; Shen, Xiaochun

2013-06-18T23:59:59.000Z

119

Advanced gray rod control assembly  

DOE Patents (OSTI)

An advanced gray rod control assembly (GRCA) for a nuclear reactor. The GRCA provides controlled insertion of gray rod assemblies into the reactor, thereby controlling the rate of power produced by the reactor and providing reactivity control at full power. Each gray rod assembly includes an elongated tubular member, a primary neutron-absorber disposed within the tubular member said neutron-absorber comprising an absorber material, preferably tungsten, having a 2200 m/s neutron absorption microscopic capture cross-section of from 10 to 30 barns. An internal support tube can be positioned between the primary absorber and the tubular member as a secondary absorber to enhance neutron absorption, absorber depletion, assembly weight, and assembly heat transfer characteristics.

Drudy, Keith J; Carlson, William R; Conner, Michael E; Goldenfield, Mark; Hone, Michael J; Long, Jr., Carroll J; Parkinson, Jerod; Pomirleanu, Radu O

2013-09-17T23:59:59.000Z

120

Geek-Up[1.21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

.21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes .21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes Geek-Up[1.21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes January 21, 2011 - 5:41pm Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What are the key facts? Microalgae are ;ole biological solar cells -- they capture solar energy and fix inorganic carbon into energy-rich lipids which can be converted into biofuels. The best way to make these biofuels commercially viable is to maximize lipid production, which tends to occur when algaes are under stress. Researchers are searching for the 5 most best-performing algae. Researchers have developed self-assembling nanoscale ropes designed to mimic the intricacy and functionality of biological materials. In the past year, Lee Elliott logged 3,500 miles traveling the West,

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Apparatus for fixed bed coal gasification  

DOE Patents (OSTI)

An apparatus for fixed-bed coal gasification is described in which coal such as caking coal is continuously pyrolyzed with clump formation inhibited, by combining the coal with a combustible gas and an oxidant, and then continually feeding the pyrolyzed coal under pressure and elevated temperature into the gasification region of a pressure vessel. The materials in the pressure vessel are allowed to react with the gasifying agents in order to allow the carbon contents of the pyrolyzed coal to be completely oxidized. The combustion of gas produced from the combination of coal pyrolysis and gasification involves combining a combustible gas coal and an oxidant in a pyrolysis chamber and heating the components to a temperature of at least 1600.degree. F. The products of coal pyrolysis are dispersed from the pyrolyzer directly into the high temperature gasification region of a pressure vessel. Steam and air needed for gasification are introduced in the pressure vessel and the materials exiting the pyrolyzer flow down through the pressure vessel by gravity with sufficient residence time to allow any carbon to form carbon monoxide. Gas produced from these reactions are then released from the pressure vessel and ash is disposed of.

Sadowski, Richard S. (Greenville, SC)

1992-01-01T23:59:59.000Z

122

EVOLUTIONARY AND GEOLOGIC CONSEQUENCES OF ORGANIC CARBON FIXING IN THE PRIMITIVE ANOXIC OCEAN  

E-Print Network (OSTI)

photosynthesis primary carbon dioxide-fixing mechanism.trophic bacteria to fix carbon dioxide. These bacteria toas the primary energy fix carbon dioxide. The free source to

Berry, W.B.N.

2013-01-01T23:59:59.000Z

123

EOR databank assembled  

Science Conference Proceedings (OSTI)

Enhanced oil recovery (EOR) technology has progressed rapidly in the last few years, and a unique situation is now at hand. The Bartlesville Energy Technology Center (BETC) of the Department of Energy has supported research to survey and collect existing, publicly available data on oil reservoirs, to indentify those reservoirs amendable to EOR technology. The data from these efforts act as a broad base from which simplified models may be derived to predict the amounts of oil reserves technically and economically recoverable by EOR techniques. BETC also has been involved in 2 programs related to EOR technology - the enhanced oil recovery cost-sharing program, and the tertiary incentive crude oil program. These 2 programs have achieved the largest accumulation of data on EOR projects assembled in one place. The data will be used to improve the predictability of the simplified models; this improved predictability, it is hoped, will promote more widespread use for EOR technology and eventually reduce the risk involved in applying this technology to new areas such as the Northeast.

Ray, R.M.

1981-10-01T23:59:59.000Z

124

Drive piston assembly for a valve actuator assembly  

DOE Patents (OSTI)

A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

Sun, Zongxuan (Troy, MI)

2010-02-23T23:59:59.000Z

125

Public Assembly | Open Energy Information  

Open Energy Info (EERE)

Assembly Assembly Jump to: navigation, search Building Type Public Assembly Definition Buildings in which people gather for social or recreational activities, whether in private or non-private meeting halls. Sub Categories social or meeting (e.g. community center, lodge, meeting hall, convention center, senior center); recreation (e.g. gymnasium, health club, bowling alley, ice rink, field house, indoor racquet sports); entertainment or culture (e.g. museum, theater, cinema, sports arena, casino, night club); library; funeral home; student activities center; armory; exhibition hall; broadcasting studio; transportation terminal References EIA CBECS Building Types [1] References ↑ EIA CBECS Building Types U.S. Energy Information Administration (Oct 2008)

126

Cooling assembly for fuel cells  

DOE Patents (OSTI)

A cooling assembly for fuel cells having a simplified construction whereby coolant is efficiently circulated through a conduit arranged in serpentine fashion in a channel within a member of such assembly. The channel is adapted to cradle a flexible, chemically inert, conformable conduit capable of manipulation into a variety of cooling patterns without crimping or otherwise restricting of coolant flow. The conduit, when assembled with the member, conforms into intimate contact with the member for good thermal conductivity. The conduit is non-corrodible and can be constructed as a single, manifold-free, continuous coolant passage means having only one inlet and one outlet.

Kaufman, Arthur (West Orange, NJ); Werth, John (Princeton, NJ)

1990-01-01T23:59:59.000Z

127

Fuel assembly for nuclear reactors  

DOE Patents (OSTI)

A new and improved fuel assembly is formed to minimize the amount of parasitic structural material wherein a plurality of hollow tubular members are juxtaposed to the fuel elements of the assembly. The tubular members may serve as guide tubes for control elements and are secured to a number of longitudinally spaced grid members along the fuel assembly. The grid members include means thereon engaging each of the fuel elements to laterally position the fuel elements in a predetermined array. Openings in the bottom of each hollow member serve as a shock absorber to cushion shock transmitted to the structure when the control elements are rapidly inserted in their corresponding tubular members.

Creagan, Robert J. (Pitcairn, PA); Frisch, Erling (Pittsburgh, PA)

1977-01-01T23:59:59.000Z

128

REQUESTS FOR PAYMENTS UNDER FIRM-FIXED PRICE CONSTRUCTION CONTRACTS  

REQUESTS FOR PAYMENTS UNDER FIRM-FIXED PRICE CONSTRUCTION CONTRACTS Author: wshelto Last modified by: wshelto Created Date: 2/28/2008 3:26:00 PM Company:

129

Development of the fixed-vane revolving vane compressor.  

E-Print Network (OSTI)

??The dissertation deals with the development of a newly introduced positive displacement rotary compressor, named fixed-vane revolving vane compressor. The compressor design is conceived with… (more)

Tan, Kok Ming.

2012-01-01T23:59:59.000Z

130

NIST / ITS-90 Fixed-Point Cell Mini-Workshop  

Science Conference Proceedings (OSTI)

Page 1. NIST / ITS-90 Fixed-Point Cell Mini-Workshop NIST, Building 221, Room B005, Gaithersburg, MD 20899 November ...

2013-08-12T23:59:59.000Z

131

NBS Mono115: Lab-Fixed Components of Elec. Dipole ...  

Science Conference Proceedings (OSTI)

3.1. Laboratory-Fixed Components of the Electric Dipole Moment Operator ?. ... 2.9) to the overall parity selection rule for electric dipole transitions . ...

132

SF6432-FP (02-01-12) Firm Fixed Price  

NLE Websites -- All DOE Office Websites (Extended Search)

SF 6432-FP (072013) Section II STANDARD TERMS AND CONDITIONS FOR FIRM-FIXED PRICE CONTRACTS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS...

133

Assembly of the PLT device  

SciTech Connect

The assembly of the PLT device began in June 1974 with a preassembly of the mechanical structure at a remote site. The preassembly sequence incorporated final fabrication procedures with an initial staging operation. This successful staging/fabrication procedure proved to be an invaluable asset when the final assembly was started in August 1974. The assembly continued with the initial reassembly of the previously tested structural components at the final machine site. Construction was interrupted at several points to allow for toroidal field coil, vacuum vessel, and poloidal coil installation. Two phases of toroidal field coil power tests were included in the assembly sequence prior to, and just after the vacuum vessel insertion. (auth)

Marino, R.

1975-11-01T23:59:59.000Z

134

Additive assembly of digital materials  

E-Print Network (OSTI)

This thesis develops the use of additive assembly of press-fit digital materials as a new rapid-prototyping process. Digital materials consist of a finite set of parts that have discrete connections and occupy discrete ...

Ward, Jonathan (Jonathan Daniel)

2010-01-01T23:59:59.000Z

135

Nuclear fuel assembly spacer  

Science Conference Proceedings (OSTI)

In a fuel assembly for a nuclear reactor including a plurality of elongated elements, a spacer is described for retaining the elements in lateral position. The spacer consists of: an array of laterally positioned, cojoined tubular ferrules, each of the ferrules providing a passage for one of the elements, laterally oriented leaf spring members, each of the spring members spanning two adjacent ones of the ferrules and extending therein to engage and laterally support the elements extending through the adjacent ferrules, facing sides of the adjacent ferrules being formed with cutouts to receive and support the spring member. The sides of the ferrules opposite the facing sides are formed with openings to receive and restrain the ends of the spring member, the spring member being formed with a generally V-shaped central portion with an apex extending toward the adjacent sides of the adjacent ferrules whereby in the absence of elements through the adjacent ferrules the central portion contacts the adjacent sides to provide a preload on the spring member and limit the amount of projection of the spring member into the ferrules whereby the insertion of the elements through the ferrules is facilitated. The central portion of the spring member is unrestrained in the presence of the elements through the ferrules, the spring member having left and right arms extending outward from the V-shaped central portion, each of the arms including a relatively long center portion for contacting a respective one of the elements. A shorter end portion is angled toward the ferrules and a tab of reduced height at the end of each arm engaging a respective one of the openings whereby the resulting shoulders at the ends of the spring member engage the inner surface of the ferrules adjacent the openings to laterally locate and retain the spring member.

Johanssen, E.B.; Matzner, B.

1986-02-18T23:59:59.000Z

136

Wafer scale micromachine assembly method  

SciTech Connect

A method for fusing together, using diffusion bonding, micromachine subassemblies which are separately fabricated is described. A first and second micromachine subassembly are fabricated on a first and second substrate, respectively. The substrates are positioned so that the upper surfaces of the two micromachine subassemblies face each other and are aligned so that the desired assembly results from their fusion. The upper surfaces are then brought into contact, and the assembly is subjected to conditions suited to the desired diffusion bonding.

Christenson, Todd R. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

137

Automatic tropical cyclone eye fix using genetic algorithm  

Science Conference Proceedings (OSTI)

Tropical cyclones (TCs) are weather systems with vast destructive power. To forecast TC tracks, forecasters need to locate their circulation centers, or eyes. This eye fix process is often done manually in practice. Since subjective elements are involved ... Keywords: Genetic algorithm, Meteorological computing, Tropical cyclone eye fix, Weather forecasting, Weather system modeling

Ka Yan Wong; Chi Lap Yip; Ping Wah Li

2008-01-01T23:59:59.000Z

138

Fixed Capital Investment Tax Credit (Connecticut) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fixed Capital Investment Tax Credit (Connecticut) Fixed Capital Investment Tax Credit (Connecticut) Fixed Capital Investment Tax Credit (Connecticut) < Back Eligibility Commercial Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Connecticut Program Type Corporate Tax Incentive Provider Connecticut Department of Economic and Community Development The Fixed Capital Investment Tax Credit allows a tax credit of 5% of the amount paid for any new fixed capital investment. Companies with fewer than 800 full-time employees may take a tax credit for machinery and equipment purchased and installed in a facility. The credit is based on a percentage of the amount spent on machinery that exceeds the amount spend on machinery

139

Improved valve and dash-pot assembly  

DOE Patents (OSTI)

A dash-pot valve comprises a cylinder submerged in the fluid of a housing and have a piston attached to a plunger projecting into the path of closing movement of a pivotal valve member. A vortex chamber in said cylinder is provided with targentially directed inlets to generate vortex flow upon retraction of said plunger and effect increasing resistance against said piston to progressively retard the closing rate of said valve member toward its seat.

Chang, S.C.

1985-04-23T23:59:59.000Z

140

Valve and dash-pot assembly  

DOE Patents (OSTI)

A dash-pot valve comprising a cylinder submerged in the fluid of a housing and having a piston attached to a plunger projecting into the path of closing movement of a pivotal valve member. A vortex chamber in said cylinder is provided with tangentially directed inlets to generate vortex flow upon retraction of said plunger and effect increasing resistance against said piston to progressively retard the closing rate of said valve member toward its seat.

Chang, Shih-Chih (Richland, WA)

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

FUEL ASSEMBLY SHAKER TEST SIMULATION  

SciTech Connect

This report describes the modeling of a PWR fuel assembly under dynamic shock loading in support of the Sandia National Laboratories (SNL) shaker test campaign. The focus of the test campaign is on evaluating the response of used fuel to shock and vibration loads that a can occur during highway transport. Modeling began in 2012 using an LS-DYNA fuel assembly model that was first created for modeling impact scenarios. SNL’s proposed test scenario was simulated through analysis and the calculated results helped guide the instrumentation and other aspects of the testing. During FY 2013, the fuel assembly model was refined to better represent the test surrogate. Analysis of the proposed loads suggested the frequency band needed to be lowered to attempt to excite the lower natural frequencies of the fuel assembly. Despite SNL’s expansion of lower frequency components in their five shock realizations, pretest predictions suggested a very mild dynamic response to the test loading. After testing was completed, one specific shock case was modeled, using recorded accelerometer data to excite the model. Direct comparison of predicted strain in the cladding was made to the recorded strain gauge data. The magnitude of both sets of strain (calculated and recorded) are very low, compared to the expected yield strength of the Zircaloy-4 material. The model was accurate enough to predict that no yielding of the cladding was expected, but its precision at predicting micro strains is questionable. The SNL test data offers some opportunity for validation of the finite element model, but the specific loading conditions of the testing only excite the fuel assembly to respond in a limited manner. For example, the test accelerations were not strong enough to substantially drive the fuel assembly out of contact with the basket. Under this test scenario, the fuel assembly model does a reasonable job of approximating actual fuel assembly response, a claim that can be verified through direct comparison of model results to recorded test results. This does not offer validation for the fuel assembly model in all conceivable cases, such as high kinetic energy shock cases where the fuel assembly might lift off the basket floor to strike to basket ceiling. This type of nonlinear behavior was not witnessed in testing, so the model does not have test data to be validated against.a basis for validation in cases that substantially alter the fuel assembly response range. This leads to a gap in knowledge that is identified through this modeling study. The SNL shaker testing loaded a surrogate fuel assembly with a certain set of artificially-generated time histories. One thing all the shock cases had in common was an elimination of low frequency components, which reduces the rigid body dynamic response of the system. It is not known if the SNL test cases effectively bound all highway transportation scenarios, or if significantly greater rigid body motion than was tested is credible. This knowledge gap could be filled through modeling the vehicle dynamics of a used fuel conveyance, or by collecting acceleration time history data from an actual conveyance under highway conditions.

Klymyshyn, Nicholas A.; Sanborn, Scott E.; Adkins, Harold E.; Hanson, Brady D.

2013-05-30T23:59:59.000Z

142

PHAST (PHAGE ASSEMBLY SUITE AND TUTORIAL): A WEB-BASED GENOME ASSEMBLY TEACHING TOOL  

E-Print Network (OSTI)

PHAST (PHAGE ASSEMBLY SUITE AND TUTORIAL): A WEB-BASED GENOME as genome assembly. PHAST (Phage Assembly Suite and Tutorial) is an online set small phage genomes of their own. With PHAST, entry-level biology students learn

Campbell, A. Malcolm

143

Fuel Assembly Shaker Test for Determining Loads on a PWR Assembly...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fuel Assembly Shaker Test for Determining Loads on a PWR Assembly under Surrogate Normal Conditions of Truck Transport R0.1 Fuel Assembly Shaker Test for Determining Loads on a PWR...

144

Packing assembly for use in a plunger bore  

SciTech Connect

A packing assembly is described which is adapted to be installed in a machine, such as a pump, the machine having a housing with a plunger bore and a plunger therin to provide a fluid-tight seal for the machine. The assembly consists of: a packing gland which fastens into one end of the plunger bore; a packing gland spacer positioned adjacent to and in contact with the packing gland; a lubrication gland positioned adjacent to and in contact with the packing gland spacer; a separate stack of packing rings, which includes at least two packing rings, each ring in the stack has a front face defining a concave shape, a rear face defining a convex shape, and a groove, defining a concave shape, in the front face; a female adaptor ring positioned between the lubrication gland and the packing ring stack, the female adaptor ring has a front face with a concave shape, the concave shape defines an angle which substantially conforms to the angle defined by the convex shape of the rear face of the last packing ring in the stack, such that the front face of the female adaptor ring can seat firmly against the rear face of the last packing ring; a male-female adaptor ring positioned between two packing rings in the stack, the male-female adaptor ring has a front face and rear face, the rear face has a convex shape and an integral rib member defining a convex shape, on the rear face, and the front face has a concave shape; the convex shape of the rear face of the male-female adaptor ring defines an angle which substantially conforms to the angle defined by the concave shape of the front face of the last packing ring in the stack and the convex shape of the face of the last packing ring in the stack and the convex shape of the rib member substantially conforms to the concave shape of the groove in the front face of the last packing ring.

Cameron, D.C.; Cobb, H.V.; Winn, F.M.

1986-02-25T23:59:59.000Z

145

The Archimedes 2 mechanical assembly planning system  

SciTech Connect

We describe the implementation and performance of Archimedes 2, an integrated mechanical assembly planning system. Archimedes 2 includes two planners, two assembly sequence animation facilities, and an associated robotic workcell. Both planners use full 3 dimensional data. A rudimentary translator from high level assembly plans to control code for the robotic workcell has also been implemented. We can translate data from a commercial CAD system into input data for the system, which has allowed us to plan assembly sequences for many industrial assemblies. Archimedes 2 has been used to plan sequences for assemblies consisting of 5 to 109 parts. We have also successfully taken a CAD model of an assembly, produced an optimized assembly sequence for it, and translated the plan into robot code, which successfully assembles the device specified in the model.

Kaufman, S.G.; Wilson, R.H.; Jones, R.E.; Calton, T.L.; Ames, A.L.

1996-03-01T23:59:59.000Z

146

Circuit breaker lock out assembly  

DOE Patents (OSTI)

A lock out assembly for a circuit breaker which consists of a generally step-shaped unitary base with an aperture in the small portion of the step-shaped base and a roughly S shaped retaining pin which loops through the large portion of the step-shaped base. The lock out assembly is adapted to fit over a circuit breaker with the handle switch projecting through the aperture, and the retaining pin projecting into an opening of the handle switch, preventing removal.

Gordy, W.T.

1983-05-18T23:59:59.000Z

147

Circuit breaker lock out assembly  

Science Conference Proceedings (OSTI)

A lock out assembly for a circuit breaker which consists of a generally step-shaped unitary base with an aperture in the small portion of the step-shaped base and a roughly "S" shaped retaining pin which loops through the large portion of the step-shaped base. The lock out assembly is adapted to fit over a circuit breaker with the handle switch projecting through the aperture, and the retaining pin projecting into an opening of the handle switch, preventing removal.

Gordy, Wade T. (Jackson, SC)

1984-01-01T23:59:59.000Z

148

DNA-guided nanoparticle assemblies  

DOE Patents (OSTI)

In some embodiments, DNA-capped nanoparticles are used to define a degree of crystalline order in assemblies thereof. In some embodiments, thermodynamically reversible and stable body-centered cubic (bcc) structures, with particles occupying <.about.10% of the unit cell, are formed. Designs and pathways amenable to the crystallization of particle assemblies are identified. In some embodiments, a plasmonic crystal is provided. In some aspects, a method for controlling the properties of particle assemblages is provided. In some embodiments a catalyst is formed from nanoparticles linked by nucleic acid sequences and forming an open crystal structure with catalytically active agents attached to the crystal on its surface or in interstices.

Gang, Oleg; Nykypanchuk, Dmytro; Maye, Mathew; van der Lelie, Daniel

2013-07-16T23:59:59.000Z

149

Ultrasonic Assembly of Thermoplastic Parts  

SciTech Connect

Four ultrasonic methods were evaluated for assembly of experimental plastic parts for detonators: (1) welding, (2) crimping and staking, (3) insertion, and (4) reactivation of adhesives. For welding, staking and insertion, plastics with low elastic moduli, such as acrylics and polycarbonate, produced the best results. Thermosetting, hot-melt, and solution adhesives could all be activated ultrasonically to form good bonds on plastics and other materials. This evaluation indicated that thermoplastic detonator parts could be assembled ultrasonically in shorter times than by present production techniques with high bond strengths and high product acceptance rates.

Schurman, W. R.

1970-03-31T23:59:59.000Z

150

Defining the early steps in nuclear pore assembly : chromatin-associated ELYS initiates pore assembly  

E-Print Network (OSTI)

of membrane fusion……………… 121 Figure 3.2: Cold temperaturefusion inhibitor LPC prevents FG Nups assembly into the coldfusion inhibitor LPC prevents FG Nups assembly into the cold

Rasala, Beth A.

2008-01-01T23:59:59.000Z

151

Freezing Rain Simulations for Fixed, Unheated Conductor Samples  

Science Conference Proceedings (OSTI)

The present paper reports on extensive experiments performed on short, fixed, unheated conductor samples in an outdoor freezing rain simulator. Their purpose is to relate the weight of ice (or, alternatively, the equivalent radial ice thickness) ...

M. L. Lu; N. Popplewell; A. H. Shah

2000-12-01T23:59:59.000Z

152

Orlando Utilities Commission- Home Energy Efficiency Fix-Up Program  

Energy.gov (U.S. Department of Energy (DOE))

Orlando Utilities Commission's Home Energy Fix-Up Program provides assistance to low-income residential customers. To qualify for the program the total annual family income must be less than $40...

153

Tropical cyclone eye fix using genetic algorithm with temporal information  

Science Conference Proceedings (OSTI)

Tropical cyclones (TCs) are weather systems with vast destructive power. To give early TC warnings, accurate location of their circulation centers, or “eyes”, is required. The pattern matching solution to this TC eye fix problem works by ...

Ka Yan Wong; Chi Lap Yip

2005-09-01T23:59:59.000Z

154

Thermodynamics of SU(3) gauge theory at fixed lattice spacing  

E-Print Network (OSTI)

We study thermodynamics of SU(3) gauge theory at fixed scales on the lattice, where we vary temperature by changing the temporal lattice size N_t=(Ta_t)^{-1}. In the fixed scale approach, finite temperature simulations are performed on common lattice spacings and spatial volumes. Consequently, we can isolate thermal effects in observables from other uncertainties, such as lattice artifact, renormalization factor, and spatial volume effect. Furthermore, in the EOS calculations, the fixed scale approach is able to reduce computational costs for zero temperature subtraction and parameter search to find lines of constant physics, which are demanding in full QCD simulations. As a test of the approach, we study the thermodynamics of the SU(3) gauge theory on isotropic and anisotropic lattices. In addition to the equation of state, we calculate the critical temperature and the static quark free energy at a fixed scale.

T. Umeda; S. Ejiri; S. Aoki; T. Hatsuda; K. Kanaya; Y. Maezawa; H. Ohno

2008-10-09T23:59:59.000Z

155

Fixed-outline thermal-aware 3D floorplanning  

Science Conference Proceedings (OSTI)

In this paper, we present a novel algorithm for 3D floorplanning with fixed outline constraints and a particular emphasis on thermal awareness. A computationally efficient thermal model that can be used to guide the thermal-aware floorplanning algorithm ...

Linfu Xiao; Subarna Sinha; Jingyu Xu; Evangeline F. Y. Young

2010-01-01T23:59:59.000Z

156

Simulated nuclear reactor fuel assembly  

DOE Patents (OSTI)

An apparatus for electrically simulating a nuclear reactor fuel assembly. It includes a heater assembly having a top end and a bottom end and a plurality of concentric heater tubes having electrical circuitry connected to a power source, and radially spaced from each other. An outer target tube and an inner target tube is concentric with the heater tubes and with each other, and the outer target tube surrounds and is radially spaced from the heater tubes. The inner target tube is surrounded by and radially spaced from the heater tubes and outer target tube. The top of the assembly is generally open to allow for the electrical power connection to the heater tubes, and the bottom of the assembly includes means for completing the electrical circuitry in the heater tubes to provide electrical resistance heating to simulate the power profile in a nuclear reactor. The embedded conductor elements in each heater tube is split into two halves for a substantial portion of its length and provided with electrical isolation such that each half of the conductor is joined at one end and is not joined at the other end.

Berta, Victor T. (Idaho Falls, ID)

1993-01-01T23:59:59.000Z

157

Valve assembly for inflatable packer  

Science Conference Proceedings (OSTI)

This patent describes a valve assembly for controlling the flow of fluid from within casing into a bladder element of an inflatable packer for use in a wellbore. The bladder element has bladder port means. The valve assembly is mountable within a single cavity in a body member in the wall of casing or a casing coupling. The body member has casing port means communicating with the cavity for communicating casing fluid to the bladder port means so that the casing fluid can flow through the bladder port means to inflate the bladder element and the body member having overpressure port means communicating with the cavity for communicating part of the fluid flowing into the bladder element back to the cavity and to the valve assembly. The valve assembly comprises: control piston means movably mounted within the cavity, restraint means for insuring that the control piston means initially moves only when the pressure of the casing fluid reaches a predetermined level, and closing piston means movably mounted within the cavity and responsive to the pressure of the fluid in the bladder element, and the control piston means and the closing piston movable about stem means disposed in the cavity.

Stringfellow, W.D.

1987-12-08T23:59:59.000Z

158

Radial blanket assembly orificing arrangement  

DOE Patents (OSTI)

A nuclear reactor core for a liquid metal cooled fast breeder reactor is described in which means are provided for increasing the coolant flow through the reactor fuel assemblies as the reactor ages by varying the coolant flow rate with the changing coolant requirements during the core operating lifetime. (auth)

Patterson, J.F.

1975-07-01T23:59:59.000Z

159

De-caf-einated : life without chromatin assembly factors  

E-Print Network (OSTI)

SACCHAROMYCES CEREVISIAE CHROMATIN ASSEMBLY FACTORS THAT ACTSaccharomyces cerevisiae chromatin- assembly factors thatSaccharomyces cerevisiae chromatin-assembly factors that act

Kats, Ellen Simona

2006-01-01T23:59:59.000Z

160

CarbFix CO2 Injection Pilot Project, J. M. Matter, M. Stute & W. Broecker  

E-Print Network (OSTI)

Fix Injection Site #12;A Conceptual Carbonation Model Injec8on well: CO2 fully dissolvedCarbFix CO2 Injection Pilot Project, Iceland J. M. Matter, M. Stute & W. Broecker Lamont Pétursson #12;CarbFix Injection Site #12;CarbFix CO2 Injection Site #12;CarbFix Injection Site 2

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Transplanting assembly of individual carbon nanotubes  

E-Print Network (OSTI)

Handling and assembling individual nanostructures to bigger scale systems such as MEMS have been the biggest challenge. A deterministic assembly of individual carbon nanotubes by transplanting them to MEMS structures is ...

Kim, Soohyung

2009-01-01T23:59:59.000Z

162

Graph theoretic approach to parallel gene assembly  

Science Conference Proceedings (OSTI)

We study parallel complexity of signed graphs motivated by the highly complex genetic recombination processes in ciliates. The molecular gene assembly operations have been modeled by operations of signed graphs, i.e., graphs where the vertices have a ... Keywords: Double-split graphs, Gene assembly, Local complement, Parallel assembly, Perfect matching, Signed graphs, Split graphs

Tero Harju; Chang Li; Ion Petre

2008-11-01T23:59:59.000Z

163

CALUTRON ASSEMBLING AND DISASSEMBLING APPARATUS  

DOE Patents (OSTI)

The construction of a calutron tank is described, whcre the face plate of the tank carrying the ion separating mechanism may be inserted or withdrawn with a minimum of difficulty, even though the plate has considerable mass and the center of gravity of the plate assembly lies within the tank. In general, the plate is pivoted at its lower end by a specially designed hinge, whereby the weight of ths plate rests on the hinge when the plato is inserted in the tank opening. A pistoncylinder arrangement is mounted on the tank and attached at the top of the plate to produce sufficient force to pivot the plate out to a point where it withdraws by its own weight and to retard the natural tendency of the plate to close with heavy impact due to the unbalanced center of gravity of the plate assembly.

Andrews, R.E.

1959-01-27T23:59:59.000Z

164

Regenerator cross arm seal assembly  

SciTech Connect

A seal assembly for disposition between a cross arm on a gas turbine engine block and a regenerator disc, the seal assembly including a platform coextensive with the cross arm, a seal and wear layer sealingly and slidingly engaging the regenerator disc, a porous and compliant support layer between the platform and the seal and wear layer porous enough to permit flow of cooling air therethrough and compliant to accommodate relative thermal growth and distortion, a dike between the seal and wear layer and the platform for preventing cross flow through the support layer between engine exhaust and pressurized air passages, and air diversion passages for directing unregenerated pressurized air through the support layer to cool the seal and wear layer and then back into the flow of regenerated pressurized air.

Jackman, Anthony V. (Indianapolis, IN)

1988-01-01T23:59:59.000Z

165

Nuclear reactor composite fuel assembly  

DOE Patents (OSTI)

A core and composite fuel assembly for a liquid-cooled breeder nuclear reactor including a plurality of elongated coextending driver and breeder fuel elements arranged to form a generally polygonal bundle within a thin-walled duct. The breeder elements are larger in cross section than the driver elements, and each breeder element is laterally bounded by a number of the driver elements. Each driver element further includes structure for spacing the driver elements from adjacent fuel elements and, where adjacent, the thin-walled duct. A core made up of the fuel elements can advantageously include fissile fuel of only one enrichment, while varying the effective enrichment of any given assembly or core region, merely by varying the relative number and size of the driver and breeder elements.

Burgess, Donn M. (Richland, WA); Marr, Duane R. (West Richland, WA); Cappiello, Michael W. (Richland, WA); Omberg, Ronald P. (Richland, WA)

1980-01-01T23:59:59.000Z

166

Metal-ceramic joint assembly  

DOE Patents (OSTI)

A metal-ceramic joint assembly in which a brazing alloy is situated between metallic and ceramic members. The metallic member is either an aluminum-containing stainless steel, a high chromium-content ferritic stainless steel or an iron nickel alloy with a corrosion protection coating. The brazing alloy, in turn, is either an Au-based or Ni-based alloy with a brazing temperature in the range of 9500 to 1200.degree. C.

Li, Jian (New Milford, CT)

2002-01-01T23:59:59.000Z

167

Rotor assembly and assay method  

DOE Patents (OSTI)

A rotor assembly for carrying out an assay includes a rotor body which is rotatable about an axis of rotation, and has a central chamber and first, second, third, fourth, fifth, and sixth chambers which are in communication with and radiate from the central chamber. The rotor assembly further includes a shuttle which is movable through the central chamber and insertable into any of the chambers, the shuttle including a reaction cup carrying an immobilized antigen or an antibody for transport among the chambers. A method for carrying out an assay using the rotor assembly includes moving the reaction cup among the six chambers by passing the cup through the central chamber between centrifugation steps in order to perform the steps of: separating plasma from blood cells, binding plasma antibody or antigen, washing, drying, binding enzyme conjugate, reacting with enzyme substrate and optically comparing the resulting reaction product with unreacted enzyme substrate solution. The movement of the reaction cup can be provided by attaching a magnet to the reaction cup and supplying a moving magnetic field to the rotor.

Burtis, Carl A. (Oak Ridge, TN); Johnson, Wayne F. (Loudon, TN); Walker, William A. (Knoxville, TN)

1993-01-01T23:59:59.000Z

168

Cheap Fixes for Beating the Heat Indoors | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cheap Fixes for Beating the Heat Indoors Cheap Fixes for Beating the Heat Indoors Cheap Fixes for Beating the Heat Indoors July 25, 2013 - 11:20am Addthis Blinds are a great option for cooling your home in the summer. | Photo courtesy of ©iStockphoto/nycshooter Blinds are a great option for cooling your home in the summer. | Photo courtesy of ©iStockphoto/nycshooter Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy How can I participate? Instead of turning on the air conditioning, consider window treatments and fans to cool down your home. If your internal thermostat is melting like the rest of the U.S. right now, you probably could use some fanning, ice, or air conditioning. With that in mind, we are providing a rundown of the cheapest ways to keep your home

169

Pressure equalizing photovoltaic assembly and method  

DOE Patents (OSTI)

Each PV assembly of an array of PV assemblies comprises a base, a PV module and a support assembly securing the PV module to a position overlying the upper surface of the base. Vents are formed through the base. A pressure equalization path extends from the outer surface of the PV module, past the peripheral edge of the PV module, to and through at least one of the vents, and to the lower surface of the base to help reduce wind uplift forces on the PV assembly. The PV assemblies may be interengaged, such as by interengaging the bases of adjacent PV assemblies. The base may include a main portion and a cover and the bases of adjacent PV assemblies may be interengaged by securing the covers of adjacent bases together.

Dinwoodie, Thomas L. (Piedmont, CA)

2003-05-27T23:59:59.000Z

170

Hydromechanical transmission with two planetary assemblies that are clutchable to both the input and output shafts  

DOE Patents (OSTI)

A power transmission having two planetary assemblies, each having its own carrier and its own planet, sun, and ring gears. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the two sun gears, which are connected together. The speed-varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being connected in driving relation to the input shaft, the other unit, which may have a fixed stroke, being connected in driving relation to the sun gears. A brake grounds the first carrier in the first range and in reverse and causes drive to be delivered to the output shaft through the first ring gear in a hydrostatic mode, the first ring gear being rigidly connected to the output shaft. The input shaft also is clutchable to either the carrier or the ring gear of the second planetary assembly. The output shaft is also clutchable to the carrier of the second planetary assembly when the input is clutched to the ring gear of the second planetary assembly, and is clutchable to the ring gear of the second planetary assembly when the input is clutched to the carrier thereof.

Orshansky, Jr., deceased, Elias (LATE OF San Francisco, CA); Weseloh, William E. (San Diego, CA)

1979-01-01T23:59:59.000Z

171

Web Migration The Web What needs to be fixed?  

E-Print Network (OSTI)

Web Update Web Migration #12;2 The Web ­ What needs to be fixed? · Lack of governance · Lack of clear roles and responsibilities for Web team · Multiple people working with the Web across the site-term Web Task Force to get lab input on above #12;3 Where Do We Stand? · Creation of Web Task Force

Wechsler, Risa H.

172

METHOD OF FIXING NITROGEN FOR PRODUCING OXIDES OF NITROGEN  

DOE Patents (OSTI)

A method is described for fixing nitrogen from air by compressing the air, irradiating the compressed air in a nuclear reactor, cooling to remove NO/ sub 2/, compressing the cooled gas, further cooling to remove N/sub 2/O and recirculating the cooled compressed air to the reactor.

Harteck, P.; Dondes, S.

1959-08-01T23:59:59.000Z

173

Resource management policies for fixed relays in cellular networks  

Science Conference Proceedings (OSTI)

Mobile stations in the cell boundary experience poor spectral efficiency due to the path loss and interference from adjacent cells. Therefore, satisfying QoS requirements of each MS at the cell boundary has been an important issue. To resolve this spectral ... Keywords: Cellular networks, Fixed relay, Path selection, Resource reuse, Spectral efficiency

Won-Hyoung Park; Saewoong Bahk

2009-03-01T23:59:59.000Z

174

Automatic Template Matching Method for Tropical Cyclone Eye Fix  

Science Conference Proceedings (OSTI)

A time-honored way of finding, or fixing, the center of a tropical cyclone (TC) is to overlay templates of spirals onto a printout of radar or satellite image. Modern methods, however, mostly focus on wind field analysis, or other motion vector techniques. ...

Wong Ka Yan; Yip Chi Lap; Li Ping Wah; Tsang Wai Wan

2004-08-01T23:59:59.000Z

175

Monitoring the Fixed FGD Sludge Landfill--Conesville, Ohio  

Science Conference Proceedings (OSTI)

Three years of extensive monitoring of the first full-scale application of the fixed flue gas desulfurization sludge process proved it technically sound. This new disposal method offers utilities leachate control in a landfill that allows diverse use of disposal sites in the future.

1984-10-01T23:59:59.000Z

176

UFO: unified convex optimization algorithms for fixed-outline floorplanning  

Science Conference Proceedings (OSTI)

In this paper, we apply two convex optimization methods, named UFO, for fixed-outline floorplanning. Our approach consists of two stages which are a global distribution stage and a local legalization stage. In the first stage, we first transform modules ...

Jai-Ming Lin; Hsi Hung

2010-01-01T23:59:59.000Z

177

Fixed-bed reforming with mid-cycle catalyst addition  

Science Conference Proceedings (OSTI)

A fixed-bed catalytic reforming process is described in which on-stream operation is begun with the catalyst retention volume in the first reactor less than 99% full and additional catalyst is added to said reactor while on-stream.

Houston, R.J.; McCoy, C.S.

1981-02-17T23:59:59.000Z

178

Note on R&D expenditures and fixed capital formation  

Science Conference Proceedings (OSTI)

In this paper we deal with the fixed capital nature of the means of production and labour employed in research and development which generate scientific and technological knowledge. We argue that these R&D current expenditures typically have the ... Keywords: Capital, Innovation, Research

Mario Marchi; Maurizio Rocchi

2010-11-01T23:59:59.000Z

179

Method of monolithic module assembly  

DOE Patents (OSTI)

Methods for "monolithic module assembly" which translate many of the advantages of monolithic module construction of thin-film PV modules to wafered c-Si PV modules. Methods employ using back-contact solar cells positioned atop electrically conductive circuit elements affixed to a planar support so that a circuit capable of generating electric power is created. The modules are encapsulated using encapsulant materials such as EVA which are commonly used in photovoltaic module manufacture. The methods of the invention allow multiple cells to be electrically connected in a single encapsulation step rather than by sequential soldering which characterizes the currently used commercial practices.

Gee, James M. (Albuquerque, NM); Garrett, Stephen E. (Albuquerque, NM); Morgan, William P. (Albuquerque, NM); Worobey, Walter (Albuquerque, NM)

1999-01-01T23:59:59.000Z

180

Design principle and calculations of a Scheffler fixed focus concentrator for medium temperature applications  

Science Conference Proceedings (OSTI)

Scheffler fixed focus concentrators are successfully used for medium temperature applications in different parts of the world. These concentrators are taken as lateral sections of paraboloids and provide fixed focus away from the path of incident beam radiations throughout the year. The paper presents a complete description about the design principle and construction details of an 8 m{sup 2} surface area Scheffler concentrator. The first part of the paper presents the mathematical calculations to design the reflector parabola curve and reflector elliptical frame with respect to equinox (solar declination = 0) by selecting a specific lateral part of a paraboloid. Crossbar equations and their ellipses, arc lengths and their radii are also calculated to form the required lateral section of the paraboloid. Thereafter, the seasonal parabola equations are calculated for two extreme positions of summer and winter in the northern hemisphere (standing reflectors). The slopes of the parabola equations for equinox (solar declination = 0), summer (solar declination = +23.5) and winter (solar declination = -23.5) for the Scheffler reflector (8 m{sup 2} surface area) are calculated to be 0.17, 0.28, and 0.13 respectively. The y-intercepts of the parabola equations for equinox, summer and winter are calculated as 0, 0.54, and -0.53 respectively. By comparing with the equinox parabola curve, the summer parabola is found to be smaller in size and uses the top part of the parabola curve while the winter parabola is bigger in size and uses the lower part of the parabola curve to give the fixed focus. For this purpose, the reflector assembly is composed of flexible crossbars and a frame to induce the required change of the parabola curves with the changing solar declination. The paper also presents the calculation procedure of seasonal parabola equations for standing reflectors in the southern hemisphere as well as for laying reflectors in the northern and southern hemispheres. Highly reflective aluminium sheets are used on the crossbar profiles to complete the concentrator. The reflector is installed at the required site by setting its axis of rotation at an angle equal to the latitude of the site. For daily tracking, these concentrators rotate along an axis parallel to the polar axis of the earth at an angular velocity of one revolution per day with the help of simpler and cheaper self-tracking devices. For seasonal tracking, the reflector rotates at half the solar declination angle with the help of a telescopic clamp mechanism. The design procedure is simple, flexible and does not need any special computational setup, thus offering the prospect of potential application in domestic as well as industrial configurations. (author)

Munir, A.; Hensel, O. [Department of Agricultural Engineering,University of Kassel, Nordbahnhofstr. 1 a 37213 Witzenhausen (Germany); Scheffler, W. [Solar Bruecke G.v.Werdenbergstr.6 D-89344 Aislingen (Germany)

2010-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Handicapped car lifting seat  

E-Print Network (OSTI)

Currently there is a lack of assistance in automobile usage for the older people of our society. In an attempt to combat this problem, this thesis designs and builds a working conceptual model of a handicapped car lifting ...

Schoenmakers, Sean A

2005-01-01T23:59:59.000Z

182

Valve stem and packing assembly  

DOE Patents (OSTI)

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele`s pivot. The Schiele`s pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele`s pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele`s pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents overtightening of the retaining nut and the resulting excessive friction between stem and stem packing.

Wordin, J.J.

1990-12-31T23:59:59.000Z

183

Corner-cutting mining assembly  

DOE Patents (OSTI)

This invention resulted from a contract with the United States Department of Energy and relates to a mining tool. More particularly, the invention relates to an assembly capable of drilling a hole having a square cross-sectional shape with radiused corners. In mining operations in which conventional auger-type drills are used to form a series of parallel, cylindrical holes in a coal seam, a large amount of coal remains in place in the seam because the shape of the holes leaves thick webs between the holes. A higher percentage of coal can be mined from a seam by a means capable of drilling holes having a substantially square cross section. It is an object of this invention to provide an improved mining apparatus by means of which the amount of coal recovered from a seam deposit can be increased. Another object of the invention is to provide a drilling assembly which cuts corners in a hole having a circular cross section. These objects and other advantages are attained by a preferred embodiment of the invention.

Bradley, J.A.

1981-07-01T23:59:59.000Z

184

Improved nuclear fuel assembly grid spacer  

DOE Patents (OSTI)

An improved fuel assembly grid spacer and method of retaining the basic fuel rod support elements in position within the fuel assembly containment channel. The improvement involves attachment of the grids to the hexagonal channel and of forming the basic fuel rod support element into a grid structure, which provides a design which is insensitive to potential channel distortion (ballooning) at high fluence levels. In addition the improved method eliminates problems associated with component fabrication and assembly.

Marshall, John (San Jose, CA); Kaplan, Samuel (Los Gatos, CA)

1977-01-01T23:59:59.000Z

185

Fluidic self-actuating control assembly  

DOE Patents (OSTI)

A fluidic self-actuating control assembly for use in a reactor wherein no external control inputs are required to actuate (scram) the system. The assembly is constructed to scram upon sensing either a sudden depressurization of reactor inlet flow or a sudden increase in core neutron flux. A fluidic control system senses abnormal flow or neutron flux transients and actuates the system, whereupon assembly coolant flow reverses, forcing absorber balls into the reactor core region.

Grantz, Alan L. (Santa Clara, CA)

1979-01-01T23:59:59.000Z

186

Method for shearing spent nuclear fuel assemblies  

DOE Patents (OSTI)

A method is disclosed for shearing spent nuclear fuel assemblies of the type wherein a plurality of long metal tubes packed with ceramic fuel are supported in a spaced apart relationship within an outer metal shell or shroud which provides structural support to the assembly. Spent nuclear fuel assemblies are first compacted in a stepwise manner between specially designed gag-compactors and then sheared into short segments amenable to chemical processing by shear blades contoured to mate with the compacted surface of the fuel assembly.

Weil, Bradley S. (Oak Ridge, TN); Watson, Clyde D. (Knoxville, TN)

1977-01-01T23:59:59.000Z

187

Available Technologies: Self-Assembling Small Molecule ...  

... “Efficient Small Molecule Bulk Heterojunction Solar Cells with High Fill Factors via Pyrene-Directed Molecular Self-Assembly,” Adv. Mater. 2011, ...

188

Assembly for directional drilling of boreholes  

Science Conference Proceedings (OSTI)

This patent describes a drilling assembly for directional drilling of boreholes in subsurface formations. The assembly comprising a downhole drilling motor. The motor having an output shaft which is suitable to drive a rotary drill bit and a motor housing which is suitable to be arranged at the lower end of a drill string; stabilizing means for stabilizing the assembly; means in the assembly for permanently tilting the central axis of the output shaft with respect to the longitudinal axis of the drill string in the borehole. It is characterized in that the stabilizing means include a lower-most stabilizer which is secured to and rotates with the output shaft.

Steiginga, A.; Worrall, R.N.

1989-11-14T23:59:59.000Z

189

Integrated operation of a pressurized fixed bed gasifier and hot gas desulfurization system  

SciTech Connect

The primary objective of this contract continues to be the demonstration of high fuel gas desulfurization of high temperature fuel gas desulfurization and particulate removal using a moving bed process with regenerable metal oxide sorbent. The fuel gas source for test operation is a fixed bed, air blown gasifier located at GE Corporate Research and Development in Schenectady, New York. The demonstration project also includes the design, construction, installation and test operation of a gas turbine simulator which includes a modified GE MS6000 type gas turbine combustor and a film cooled, first stage LM 6000 nozzle assembly. The hot gas cleanup (HGCU) system and the gas turbine simulator have been designed to operate with the full 8000 lb/hr fuel gas flow from the gasification of 1800 lb/hr of coal at 280 psig and 1000 to 1150 F. An advanced formulation of zinc ferrite as well as zinc titanate have been used as the regenerable metal oxide sorbents in testing to date. Demonstration of halogen removal as well as characterization of alkali and heavy metal concentrations in the fuel gas remain objectives, as well. Results are discussed.

Cook, C.S.; Gal, E.; Furman, A.H.; Ayala, R.

1992-12-01T23:59:59.000Z

190

Integrated operation of a pressurized fixed bed gasifier and hot gas desulfurization system  

SciTech Connect

The primary objective of this contract continues to be the demonstration of high fuel gas desulfurization of high temperature fuel gas desulfurization and particulate removal using a moving bed process with regenerable metal oxide sorbent. The fuel gas source for test operation is a fixed bed, air blown gasifier located at GE Corporate Research and Development in Schenectady, New York. The demonstration project also includes the design, construction, installation and test operation of a gas turbine simulator which includes a modified GE MS6000 type gas turbine combustor and a film cooled, first stage LM 6000 nozzle assembly. The hot gas cleanup (HGCU) system and the gas turbine simulator have been designed to operate with the full 8000 lb/hr fuel gas flow from the gasification of 1800 lb/hr of coal at 280 psig and 1000 to 1150 F. An advanced formulation of zinc ferrite as well as zinc titanate have been used as the regenerable metal oxide sorbents in testing to date. Demonstration of halogen removal as well as characterization of alkali and heavy metal concentrations in the fuel gas remain objectives, as well. Results are discussed.

Cook, C.S.; Gal, E.; Furman, A.H.; Ayala, R.

1992-01-01T23:59:59.000Z

191

Assembly and post-assembly manipulation of polyelectrolyte multilayers for control of bacterial attachment and viability  

E-Print Network (OSTI)

The overall goal of this thesis was to exploit the versatility of the polyelectrolyte multilayer (PEM) platform to consider bacteria-substrata interactions by varying multilayer assembly and post-assembly conditions. We ...

Lichter, Jenny, 1982-

2009-01-01T23:59:59.000Z

192

On the Fixed-Point Structure of Scalar Fields  

E-Print Network (OSTI)

In a recent Letter (K.Halpern and K.Huang, Phys. Rev. Lett. 74 (1995) 3526), certain properties of the Local Potential Approximation (LPA) to the Wilson renormalization group were uncovered, which led the authors to conclude that $D>2$ dimensional scalar field theories endowed with {\\sl non-polynomial} interactions allow for a continuum of renormalization group fixed points, and that around the Gaussian fixed point, asymptotically free interactions exist. If true, this could herald very important new physics, particularly for the Higgs sector of the Standard Model. Continuing work in support of these ideas, has motivated us to point out that we previously studied the same properties and showed that they lead to very different conclusions. Indeed, in as much as the statements in hep-th/9406199 are correct, they point to some deep and beautiful facts about the LPA and its generalisations, but however no new physics.

Tim R. Morris

1996-01-24T23:59:59.000Z

193

Variable area light reflecting assembly  

DOE Patents (OSTI)

Device is described for tracking daylight and projecting it into a building. The device tracks the sun and automatically adjusts both the orientation and area of the reflecting surface. The device may be mounted in either a wall or roof of a building. Additionally, multiple devices may be employed in a light shaft in a building, providing daylight to several different floors. The preferred embodiment employs a thin reflective film as the reflecting device. One edge of the reflective film is fixed, and the opposite end is attached to a spring-loaded take-up roller. As the sun moves across the sky, the take-up roller automatically adjusts the angle and surface area of the film. Additionally, louvers may be mounted at the light entrance to the device to reflect incoming daylight in an angle perpendicular to the device to provide maximum reflective capability when daylight enters the device at non-perpendicular angles. 9 figs.

Howard, T.C.

1986-12-23T23:59:59.000Z

194

Variable area light reflecting assembly  

DOE Patents (OSTI)

Device for tracking daylight and projecting it into a building. The device tracks the sun and automatically adjusts both the orientation and area of the reflecting surface. The device may be mounted in either a wall or roof of a building. Additionally, multiple devices may be employed in a light shaft in a building, providing daylight to several different floors. The preferred embodiment employs a thin reflective film as the reflecting device. One edge of the reflective film is fixed, and the opposite end is attached to a spring-loaded take-up roller. As the sun moves across the sky, the take-up roller automatically adjusts the angle and surface area of the film. Additionally, louvers may be mounted at the light entrance to the device to reflect incoming daylight in an angle perpendicular to the device to provide maximum reflective capability when daylight enters the device at non-perpendicular angles.

Howard, Thomas C. (Raleigh, NC)

1986-01-01T23:59:59.000Z

195

Fixed-base platform concepts for deepwater Gulf of Mexico  

Science Conference Proceedings (OSTI)

Today, offshore platforms are installed in water as deep as 5,000 ft. Gulf of Mexico offshore platforms can be categorized by the water-depth ranges where they are cost-effective: Fixed-base rigid platforms (to approximately 1,400 ft); Compliant towers (1,200 to 2,000 ft); and Floating systems (deeper than 1,600 ft). The paper describes production and equipment, design, platform concepts, in-place considerations, fabrication considerations, and installation considerations.

NONE

1998-04-01T23:59:59.000Z

196

MHK Technologies/Wave Treader fixed | Open Energy Information  

Open Energy Info (EERE)

MHK Technologies/Wave Treader fixed MHK Technologies/Wave Treader fixed < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wave Treader fixed.jpg Technology Profile Primary Organization Green Ocean Energy Ltd Project(s) where this technology is utilized *MHK Projects/Development of Ocean Treader Technology Resource Click here Wave Technology Type Click here Attenuator Technology Readiness Level Click here TRL 4: Proof of Concept Technology Description The Wave Treader concept utilises the arms and sponsons from Ocean Treader and instead of reacting against a floating Spar Buoy, will react through an Interface Structure onto the Foundation of an Offshore Wind Turbine. Between the Arms and the Interface Structure hydraulic cylinders are mounted and as the wave passes the machine first the forward Sponson will lift and fall and then the aft Sponson will lift and fall each stroking their hydraulic cylinder in turn. This pressurises hydraulic fluid which is then smoothed by hydraulic accumulators before driving a hydraulic motor which in turn drives an electricity generator. The electricity is then exported through the cable shared with the Wind Turbine.

197

Snubber assembly for turbine blades  

DOE Patents (OSTI)

A snubber associated with a rotatable turbine blade in a turbine engine, the turbine blade including a pressure sidewall and a suction sidewall opposed from the pressure wall. The snubber assembly includes a first snubber structure associated with the pressure sidewall of the turbine blade, a second snubber structure associated with the suction sidewall of the turbine blade, and a support structure. The support structure extends through the blade and is rigidly coupled at a first end portion thereof to the first snubber structure and at a second end portion thereof to the second snubber structure. Centrifugal loads exerted by the first and second snubber structures caused by rotation thereof during operation of the engine are at least partially transferred to the support structure, such that centrifugal loads exerted on the pressure and suctions sidewalls of the turbine blade by the first and second snubber structures are reduced.

Marra, John J

2013-09-03T23:59:59.000Z

198

NUCLEAR REACTOR FUEL ELEMENT ASSEMBLY  

DOE Patents (OSTI)

A method of fabricating nuclear reactor fuel element assemblies having a plurality of longitudinally extending flat fuel elements in spaced parallel relation to each other to form channels is presented. One side of a flat side plate is held contiguous to the ends of the elements and a welding means is passed along the other side of the platertransverse to the direction of the longitudinal extension of the elements. The setting and speed of travel of the welding means is set to cause penetration of the side plate with welds at bridge the gap in each channel between adjacent fuel elements with a weld-through bubble of predetermined size. The fabrication of a high strength, dependable fuel element is provided, and the reduction of distortion and high production costs are facilitated by this method. (AEC)

Stengel, F.G.

1963-12-24T23:59:59.000Z

199

Low inductance power electronics assembly  

DOE Patents (OSTI)

A power electronics assembly is provided. A first support member includes a first plurality of conductors. A first plurality of power switching devices are coupled to the first support member. A first capacitor is coupled to the first support member. A second support member includes a second plurality of conductors. A second plurality of power switching devices are coupled to the second support member. A second capacitor is coupled to the second support member. The first and second pluralities of conductors, the first and second pluralities of power switching devices, and the first and second capacitors are electrically connected such that the first plurality of power switching devices is connected in parallel with the first capacitor and the second capacitor and the second plurality of power switching devices is connected in parallel with the second capacitor and the first capacitor.

Herron, Nicholas Hayden; Mann, Brooks S.; Korich, Mark D.; Chou, Cindy; Tang, David; Carlson, Douglas S.; Barry, Alan L.

2012-10-02T23:59:59.000Z

200

Miniature MT optical assembly (MMTOA)  

DOE Patents (OSTI)

An optical assembly (10) includes a rigid mount (12) with a recess (26) proximate a first side thereof, a substrate (14), and an optical die (16) flip-chip bonded to the substrate (14). The substrate (14) is secured to the first side of the mount and includes a plurality of die bonding elements (40), a plurality of optical apertures (32), and a plurality of external bonding elements (42). A plurality of traces (44) interconnect the die bonding elements (40) and the external bonding elements (42). The optical die (16) includes a plurality of optical elements, each element including an optical signal interface (48), the die being bonded to the plurality of die bonding elements (40) such that the optical signal interface (48) of each element is in registry with an optical aperture (32) of the substrate (14) and the die (16) is at least partially enclosed by the recess (26).

Laughlin, Daric (Overland Park, KS); Abel, Phillip (Overland Park, KS)

2008-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Diverter assembly for radioactive material  

DOE Patents (OSTI)

A diverter assembly for diverting a pneumatically conveyed holder for a radioactive material between a central conveying tube and one of a plurality of radially offset conveying tubes includes an airtight container. A diverter tube having an offset end is suitably mounted in the container for rotation. A rotary seal seals one end of the diverter tube during and after rotation of the diverter tube while a spring biased seal seals the other end of the diverter tube which moves between various offset conveying tubes. An indexing device rotatably indexes the diverter tube and this indexing device is driven by a suitable drive. The indexing mechanism is preferably a geneva-type mechanism to provide a locking of the diverter tube in place. 3 figs.

Andrews, K.M.; Starenchak, R.W.

1988-04-11T23:59:59.000Z

202

Valve stem and packing assembly  

SciTech Connect

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele's pivot. The Schiele's pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele's pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele's pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents overtightening of the retaining nut and the resulting excessive friction between stem and stem packing.

Wordin, John J. (Bingham County, ID)

1991-01-01T23:59:59.000Z

203

Valve stem and packing assembly  

DOE Patents (OSTI)

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele's pivot. The Schiele's pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele's pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele's pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents over tightening of the retaining nut and the resulting excessive friction between stem and stem packing. 2 figures.

Wordin, J.J.

1991-09-03T23:59:59.000Z

204

Valve stem and packing assembly  

DOE Patents (OSTI)

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele's pivot. The Schiele's pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele's pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele's pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents overtightening of the retaining nut and the resulting excessive friction between stem and stem packing.

Wordin, J.J.

1990-01-01T23:59:59.000Z

205

Fuel rod assembly to manifold attachment  

DOE Patents (OSTI)

A fuel element is formed with a plurality of fuel rod assemblies detachably connected to an overhead support with each of the fuel rod assemblies having a gas tight seal with the support to allow internal fission gaseous products to flow without leakage from the fuel rod assemblies into a vent manifold passageway system on the support. The upper ends of the fuel rod assemblies are located at vertically extending openings in the support and upper threaded members are threaded to the fuel rod assemblies to connect the latter to the support. The preferred threaded members are cap nuts having a dome wall encircling an upper threaded end on the fuel rod assembly and having an upper sealing surface for sealing contact with the support. Another and lower seal is achieved by abutting a sealing surface on each fuel rod assembly with the support. A deformable portion on the cap nut locks the latter against inadvertent turning off the fuel rod assembly. Orienting means on the fuel rod and support primarily locates the fuel rods azimuthally for reception of a deforming tool for the cap nut. A cross port in the fuel rod end plug discharges into a sealed annulus within the support, which serves as a circumferential chamber, connecting the manifold gas passageways in the support.

Donck, Harry A. (San Diego, CA); Veca, Anthony R. (San Diego, CA); Snyder, Jr., Harold J. (San Diego, CA)

1980-01-01T23:59:59.000Z

206

Pv-Thermal Solar Power Assembly  

DOE Patents (OSTI)

A flexible solar power assembly includes a flexible photovoltaic device attached to a flexible thermal solar collector. The solar power assembly can be rolled up for transport and then unrolled for installation on a surface, such as the roof or side wall of a building or other structure, by use of adhesive and/or other types of fasteners.

Ansley, Jeffrey H. (El Cerrito, CA); Botkin, Jonathan D. (El Cerrito, CA); Dinwoodie, Thomas L. (Piedmont, CA)

2001-10-02T23:59:59.000Z

207

Productivity Improvement of a Manual Assembly Line  

E-Print Network (OSTI)

The current project addresses the productivity improvement of a manual assembly line by making use of operations analysis in the framework of Lean production. A methodology is proposed that helps to improve the productivity of any production process. The methodology consists of selecting a product or product family to be studied followed by current process study. Once the existing process is documented, all the assembly tasks involved must be timed using time study techniques. Operations analysis enables the reduction of non-productive tasks and results in a set of standardized work elements along with the set of standard procedures for performing the operations. Assembly line balancing along with the associated operations analysis assists in constructing or re-configuring an assembly system, which is the key step in improving the overall performance of an assembly line. Following this approach, two manual assembly line configurations (single stage parallel line and five-stage serial line) are constructed for a case study. The results show that by changing over to the single stage assembly line configuration the operator productivity is doubled when compared to the existing assembly method.

Yerasi, Pranavi

2011-08-01T23:59:59.000Z

208

Automatically closing swing gate closure assembly  

DOE Patents (OSTI)

A swing gate closure assembly for nuclear reactor tipoff assembly wherein the swing gate is cammed open by a fuel element or spacer but is reliably closed at a desired closing rate primarily by hydraulic forces in the absence of a fuel charge.

Chang, Shih-Chih (Richland, WA); Schuck, William J. (Richland, WA); Gilmore, Richard F. (Kennewick, WA)

1988-01-01T23:59:59.000Z

209

Structural analysis of an LMFBR shield assembly duct under thermo-mechanical and seismic loads  

SciTech Connect

This paper describes the stress analysis performed to assess structural adequacy of the Clinch River Breeder Reactor (CRBR) core removable shield assemblies. Removable shield assemblies are located in the peripheral region of the core (between blanket assemblies and the fixed radial shield), and are subjected to severe cross-sectional thermal gradients and seismic loads requiring a relatively complex duct load pad design. For cost-effectiveness, the analysis was conducted in two stages. First, an elasto-plastic seismic stress analysis was performed using a detailed nonlinear finite element model (with gaps) of the load pad configuration. Next, in order to determine the total strain accumulation and the creep-fatigue damage the maximum seismic stresses combined with the ''worst'' thermal stresses from a single assembly model were used to perform a simplified inelastic analysis using two sets of material properties to bound the changing material conditions during reactor operation. This work demonstrated the necessity and applicability of the two simplified analysis techniques in elevated temperature structural design, i.e., the treatment of time-dependent degradation of material properties due to temperature and nuclear irradiation, and the use of time-independent finite element stress analysis results to perform a simplified creep-fatigue analysis.

Malik, S.N.; Sazawal, V.K.

1984-06-01T23:59:59.000Z

210

Locking support for nuclear fuel assemblies  

DOE Patents (OSTI)

A locking device for supporting and locking a nuclear fuel assembly within a cylindrical bore formed by a support plate, the locking device including a support and locking sleeve having upwardly extending fingers forming wedge shaped contact portions arranged for interaction between an annular tapered surface on the fuel assembly and the support plate bore as well as downwardly extending fingers having wedge shaped contact portions arranged for interaction between an annularly tapered surface on the support plate bore and the fuel assembly whereby the sleeve tends to support and lock the fuel assembly in place within the bore by its own weight while facilitating removal and/or replacement of the fuel assembly.

Ledin, Eric (San Diego, CA)

1980-01-01T23:59:59.000Z

211

Liquid-liquid interfacial nanoparticle assemblies  

DOE Patents (OSTI)

Self-assembly of nanoparticles at the interface between two fluids, and methods to control such self-assembly process, e.g., the surface density of particles assembling at the interface; to utilize the assembled nanoparticles and their ligands in fabrication of capsules, where the elastic properties of the capsules can be varied from soft to tough; to develop capsules with well-defined porosities for ultimate use as delivery systems; and to develop chemistries whereby multiple ligands or ligands with multiple functionalities can be attached to the nanoparticles to promote the interfacial segregation and assembly of the nanoparticles. Certain embodiments use cadmium selenide (CdSe) nanoparticles, since the photoluminescence of the particles provides a convenient means by which the spatial location and organization of the particles can be probed. However, the systems and methodologies presented here are general and can, with suitable modification of the chemistries, be adapted to any type of nanoparticle.

Emrick, Todd S. (South Deerfield, MA); Russell, Thomas P. (Amherst, MA); Dinsmore, Anthony (Amherst, MA); Skaff, Habib (Amherst, MA); Lin, Yao (Amherst, MA)

2008-12-30T23:59:59.000Z

212

Designing effective step-by-step assembly instructions  

Science Conference Proceedings (OSTI)

We present design principles for creating effective assembly instructions and a system that is based on these principles. The principles are drawn from cognitive psychology research which investigated people's conceptual models of assembly and effective ... Keywords: assembly instructions, visualization

Maneesh Agrawala; Doantam Phan; Julie Heiser; John Haymaker; Jeff Klingner; Pat Hanrahan; Barbara Tversky

2003-07-01T23:59:59.000Z

213

An evolutionary fuel assembly design for high power density BWRs  

E-Print Network (OSTI)

An evolutionary BWR fuel assembly design was studied as a means to increase the power density of current and future BWR cores. The new assembly concept is based on replacing four traditional assemblies and large water gap ...

Karahan, Aydin

2007-01-01T23:59:59.000Z

214

Self-Assembly of Polymer Nano-Elements on Sapphire  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembly of Polymer Nano-Elements on Sapphire Self-Assembly of Polymer Nano-Elements on Sapphire Print Wednesday, 25 March 2009 00:00 Self-assembly of polymers promises to...

215

PCR - Ligation Assembly Standard for BioBrick Parts  

E-Print Network (OSTI)

This Request for Comments (RFC) describes a novel method for the assembly of standard BioBrick parts. This assembly method for BioBrick parts is an improvement upon the conventional methods of BioBrick part assembly. This ...

He, Tony PeiYuan

2011-12-15T23:59:59.000Z

216

A classification scheme for LWR fuel assemblies  

Science Conference Proceedings (OSTI)

With over 100 light water nuclear reactors operating nationwide, representing designs by four primary vendors, and with reload fuel manufactured by these vendors and additional suppliers, a wide variety of fuel assembly types are in existence. At Oak Ridge National Laboratory, both the Systems Integration Program and the Characteristics Data Base project required a classification scheme for these fuels. This scheme can be applied to other areas and is expected to be of value to many Office of Civilian Radioactive Waste Management programs. To develop the classification scheme, extensive information on the fuel assemblies that have been and are being manufactured by the various nuclear fuel vendors was compiled, reviewed, and evaluated. It was determined that it is possible to characterize assemblies in a systematic manner, using a combination of physical factors. A two-stage scheme was developed consisting of 79 assembly types, which are grouped into 22 assembly classes. The assembly classes are determined by the general design of the reactor cores in which the assemblies are, or were, used. The general BWR and PWR classes are divided differently but both are based on reactor core configuration. 2 refs., 15 tabs.

Moore, R.S.; Williamson, D.A.; Notz, K.J.

1988-11-01T23:59:59.000Z

217

Deputy Secretary Poneman's Remarks at the Nuclear Energy Assembly...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Assembly - As Prepared for Delivery Deputy Secretary Poneman's Remarks at the Nuclear Energy Assembly - As Prepared for Delivery May 11, 2011 - 6:01pm Addthis Deputy...

218

Los Alamos shares Nano 50 award for directed assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

Nano 50 award for directed assembly Los Alamos shares Nano 50 award for directed assembly Nano 50 Awards recognize "the top 50 technologies, products, and innovators that have...

219

Self-Assembly of Polymer Nano-Elements on Sapphire  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured...

220

Layer-by-Layer Assembled Thin Films for Battery Electrolytes  

Science Conference Proceedings (OSTI)

Presentation Title, Layer-by-Layer Assembled Thin Films for Battery Electrolytes ... Abstract Scope, Exponential layer-by-layer (eLBL) assembled battery ...

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Plant, Tennessee and Hanford Site, Richland, Washington Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear...

222

Low thermal resistance power module assembly - Energy Innovation ...  

A power module assembly (400) with low thermal resistance and enhanced heat dissipation to a cooling medium. The assembly includes a heat sink or spreader plate (410 ...

223

High aspect ratio, remote controlled pumping assembly  

DOE Patents (OSTI)

A miniature dual syringe-type pump assembly is described which has a high aspect ratio and which is remotely controlled, for use such as in a small diameter penetrometer cone or well packer used in water contamination applications. The pump assembly may be used to supply and remove a reagent to a water contamination sensor, for example, and includes a motor, gearhead and motor encoder assembly for turning a drive screw for an actuator which provides pushing on one syringe and pulling on the other syringe for injecting new reagent and withdrawing used reagent from an associated sensor. 4 figs.

Brown, S.B.; Milanovich, F.P.

1995-11-14T23:59:59.000Z

224

The Assembly of Galaxy Clusters  

SciTech Connect

We study the formation of fifty-three galaxy cluster-size dark matter halos (M = 10{sup 14.0-14.76} M{sub {circle_dot}}) formed within a pair of cosmological {Lambda}CDM N-body simulations, and track the accretion histories of cluster subhalos with masses large enough to host {approx} 0.1L{sub *} galaxies. By associating subhalos with cluster galaxies, we find the majority of galaxies in clusters experience no 'pre-processing' in the group environment prior to their accretion into the cluster. On average, {approx} 70% of cluster galaxies fall into the cluster potential directly from the field, with no luminous companions in their host halos at the time of accretion; and less than {approx} 12% are accreted as members of groups with five or more galaxies. Moreover, we find that cluster galaxies are significantly less likely to have experienced a merger in the recent past ({approx}< 6 Gyr) than a field halo of the same mass. These results suggest that local, cluster processes like ram-pressure stripping, galaxy harassment, or strangulation play the dominant role in explaining the difference between cluster and field populations at a fixed stellar mass; and that pre-evolution or past merging in the group environment is of secondary importance for setting cluster galaxy properties for most clusters. The accretion times for z = 0 cluster members are quite extended, with {approx} 20% incorporated into the cluster halo more than 7 Gyr ago and {approx} 20% within the last 2 Gyr. By comparing the observed morphological fractions in cluster and field populations, we estimate an approximate time-scale for late-type to early-type transformation within the cluster environment to be {approx} 6 Gyr.

Berrier, Joel C.; Stewart, Kyle R.; Bullock, James S.; Purcell, Chris W.; Barton, Elizabeth J.; Wechsler, Risa H.

2008-05-16T23:59:59.000Z

225

The Assembly of Galaxy Clusters  

Science Conference Proceedings (OSTI)

We study the formation of fifty-three galaxy cluster-size dark matter halos (M = 10{sup 14.0-14.76} M{sub {circle_dot}}) formed within a pair of cosmological {Lambda}CDM N-body simulations, and track the accretion histories of cluster subhalos with masses large enough to host {approx} 0.1L{sub *} galaxies. By associating subhalos with cluster galaxies, we find the majority of galaxies in clusters experience no 'pre-processing' in the group environment prior to their accretion into the cluster. On average, {approx} 70% of cluster galaxies fall into the cluster potential directly from the field, with no luminous companions in their host halos at the time of accretion; and less than {approx} 12% are accreted as members of groups with five or more galaxies. Moreover, we find that cluster galaxies are significantly less likely to have experienced a merger in the recent past ({approx}ram-pressure stripping, galaxy harassment, or strangulation play the dominant role in explaining the difference between cluster and field populations at a fixed stellar mass; and that pre-evolution or past merging in the group environment is of secondary importance for setting cluster galaxy properties for most clusters. The accretion times for z = 0 cluster members are quite extended, with {approx} 20% incorporated into the cluster halo more than 7 Gyr ago and {approx} 20% within the last 2 Gyr. By comparing the observed morphological fractions in cluster and field populations, we estimate an approximate time-scale for late-type to early-type transformation within the cluster environment to be {approx} 6 Gyr.

Berrier, Joel C.; Stewart, Kyle R.; Bullock, James S.; Purcell, Chris W.; Barton, Elizabeth J.; Wechsler, Risa H.

2008-05-16T23:59:59.000Z

226

Fuel Assembly Shaker Test for Determining Loads on a PWR Assembly under  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Assembly Shaker Test for Determining Loads on a PWR Assembly Assembly Shaker Test for Determining Loads on a PWR Assembly under Surrogate Normal Conditions of Truck Transport R0.1 Fuel Assembly Shaker Test for Determining Loads on a PWR Assembly under Surrogate Normal Conditions of Truck Transport R0.1 The United States current approach of long-term storage at its nuclear power plants and independent spent fuel storage installation, and deferred transportation of used nuclear fuel (UNF), along with the trend of nuclear power plants using reactor fuel for a longer time, creates questions concerning the ability of this aged, high-burnup fuel to withstand stresses and strains seen during normal conditions of transport from its current location to a future consolidated storage facility or permanent repository. UNFD R&D conducted testing employing surrogate instrumented

227

Self-Assembling Efficient Organic Electronics  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembling Efficient Organic Electronics Self-Assembling Efficient Organic Electronics Speaker(s): Rachel Segalman Date: April 26, 2005 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Venkat Srinivasan In the last decade, the use of self-assembling block copolymers to nanopattern substrates and template synthesis has made incredible gains as a primary step towards the fabrication of nanodevices. Many studies have demonstrated a sophisticated level of control over the self-assembling, coil-type polymer systems to produce long range order. The knowledge now exists to begin to pattern polymers with a much higher degree of complexity and inherent functionality. It is apparent, for instance, that the mesostructure of conductive polymers impacts their luminescence and photovoltaic efficiency. For instance, block copolymers made from

228

Carbon nanotubes : a study on assembly methods  

E-Print Network (OSTI)

The urgent stipulation is to manufacture CNTs of desired properties and dimensions. The heart of this yearning lies in understanding the growth and assembly methods of CNTs, which are not yet clear. In this study, hence, ...

Quiñones, Lisandro E. (Quiñones Ortiz)

2008-01-01T23:59:59.000Z

229

Method of making a unitized electrode assembly  

DOE Patents (OSTI)

A battery assembly of the consumable metal anode type has now been constructed for ready assembly as well as disassembly. In a non-conductive and at least substantially inert cell body, space is provided for receiving an open-structured, non-consumable anode cage. The cage has an open top for facilitating insertion of an anode. A modular cathode is used, comprising a peripheral current conductor frame clamped about a grid reinforced air cathode in sheet form. The air cathode may be double gridded. The cathode frame can be sealed, during assembly, with electrolyte-resistant-sealant as well as with adhesive. The resulting cathode module can be assembled outside the cell body and readily inserted therein, or can later be easily removed therefrom.

Niksa, Marilyn J. (Painesville, OH); Pohto, Gerald R. (Mentor, OH); Lakatos, Leslie K. (Mentor, OH); Wheeler, Douglas J. (Cleveland Heights, OH); Solomon, Frank (Great Neck, NY); Niksa, Andrew J. (Painesville, OH); Schue, Thomas J. (Huntsburg, OH); Genodman, Yury (Brooklyn, NY); Turk, Thomas R. (Mentor, OH); Hagel, Daniel P. (Willoughby, OH)

1988-01-01T23:59:59.000Z

230

Nonclassical assembly pathways of anisotropic particles  

E-Print Network (OSTI)

Advances in synthetic methods have spawned an array of nanoparticles and bio-inspired molecules of diverse shapes and interaction geometries. Recent experiments indicate that such anisotropic particles exhibit a variety of 'nonclassical' self-assembly pathways, forming ordered assemblies via intermediates that do not share the architecture of the bulk material. Here we apply mean field theory to a prototypical model of interacting anisotropic particles, and find a clear thermodynamic impetus for nonclassical ordering in certain regimes of parameter space. In other parameter regimes, by contrast, assembly pathways are selected by dynamics. This approach suggests a means of predicting when anisotropic particles might assemble in a manner more complicated than that assumed by classical nucleation theory.

Stephen Whitelam

2009-12-10T23:59:59.000Z

231

Reactivity control assembly for nuclear reactor  

DOE Patents (OSTI)

Reactivity control assembly for nuclear reactor comprises supports stacked above reactor core for holding control rods. Couplers associated with the supports and a vertically movable drive shaft have lugs at their lower ends for engagement with the supports.

Bollinger, Lawrence R. (Schenectady, NY)

1984-01-01T23:59:59.000Z

232

Nozzle and shroud assembly mounting structure  

DOE Patents (OSTI)

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)

1997-01-01T23:59:59.000Z

233

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

2012-09-04T23:59:59.000Z

234

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 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)

2010-12-28T23:59:59.000Z

235

Car Parts Self-Assembled From  

E-Print Network (OSTI)

Car Parts Self-Assembled From DNA Next: Navigation Helmet Cr SoundTech, Clay Dillow, clean energy, desali desalinization, electricity production, micro cells, wastewater Not bad for a microbe Microbial fuel cell desalinates water while generating electricity: This microbial

236

Method of making a unitized electrode assembly  

DOE Patents (OSTI)

A battery assembly of the consumable metal anode type has now been constructed for ready assembly as well as disassembly. In a non-conductive and at least substantially inert cell body, space is provided for receiving an open-structured, non-consumable anode cage. The cage has an open top for facilitating insertion of an anode. A modular cathode is used, comprising a peripheral current conductor frame clamped about a grid reinforced air cathode in sheet form. The air cathode may be double gridded. The cathode frame can be sealed, during assembly, with electrolyte-resistant-sealant as well as with adhesive. The resulting cathode module can be assembled outside the cell body and readily inserted therein, or can later be easily removed therefrom. 6 figs.

Niksa, M.J.; Pohto, G.R.; Lakatos, L.K.; Wheeler, D.J.; Solomon, F.; Niksa, A.J.; Schue, T.J.; Genodman, Y.; Turk, T.R.; Hagel, D.P.

1988-12-06T23:59:59.000Z

237

Long-life leak standard assembly  

DOE Patents (OSTI)

The present invention is directed to a portable leak standard assembly which is capable of providing a stream of high-purity reference gas at a virtually constant flow rate over an extensive period of time. The leak assembly comprises a high pressure reservoir coupled to a metal leak valve through a valve-controlled conduit. A reproducible leak valve useful in this assembly is provided by a metal tube crimped with a selected pressure loading for forming an orifice in the tube with this orifice being of a sufficient size to provide the selected flow rate. The leak valve assembly is formed of metal so that it can be "baked-out" in a vacuum furnace to rid the reservoir and attendent components of volatile impurities which reduce the efficiency of the leak standard.

Basford, James A. (Oak Ridge, TN); Mathis, John E. (Oak Ridge, TN); Wright, Harlan C. (Oak Ridge, TN)

1982-01-01T23:59:59.000Z

238

Method of forming and assembly of parts  

DOE Patents (OSTI)

A method of assembling two or more parts together that may be metal, ceramic, metal and ceramic parts, or parts that have different CTE. Individual parts are formed and sintered from particles that leave a network of interconnecting porosity in each sintered part. The separate parts are assembled together and then a fill material is infiltrated into the assembled, sintered parts using a method such as capillary action, gravity, and/or pressure. The assembly is then cured to yield a bonded and fully or near-fully dense part that has the desired physical and mechanical properties for the part's intended purpose. Structural strength may be added to the parts by the inclusion of fibrous materials.

Ripley, Edward B. (Knoxville, TN)

2010-12-28T23:59:59.000Z

239

Unified framework for finite element assembly  

Science Conference Proceedings (OSTI)

At the heart of any finite element simulation is the assembly of matrices and vectors from discrete variational forms. We propose a general interface between problem-specific and general-purpose components of finite element programs. This interface ...

M. S. Alnaes; A. Logg; K-A. Mardal; O. Skavhaug; H. P. Langtangen

2009-11-01T23:59:59.000Z

240

BWR Assembly Optimization for Minor Actinide Recycling  

Science Conference Proceedings (OSTI)

The Primary objective of the proposed project is to apply and extend the latest advancements in LWR fuel management optimization to the design of advanced boiling water reactor (BWR) fuel assemblies specifically for the recycling of minor actinides (MAs).

G. Ivan Maldonado; John M. Christenson; J.P. Renier; T.F. Marcille; J. Casal

2010-03-22T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Automated array assembly. Final report  

DOE Green Energy (OSTI)

Three main sections are included which describe a general technology assessment and manufacturing cost analysis; a near-term (1982) factory design; and the results of an experimental production study for the large-scale production of flat-panel silicon solar-cell arrays. The results of an extensive study and detailed analysis of technologies which could be related to array module manufacturing are presented. From this study, several manufacturing sequences emerge as candidates for satisfying the ERDA/JPL cost goal of $0.50/W selling price in 1986. A minimum manufacturing cost was found in a highly automated line of $0.30/W assuming the silicon is free. The panels are of a double-glass construction and are based on round wafers. Screen-printed silver has been used as the metallization with a spray-coated antireflection (AR) layer. The least expensive junction-formation technology appears to be ion implantation;however, several other technologies also may be used with very little cost penalty as described. An interim 1982 factory is described for the large-scale production of silicon solar-cell array modules. The boundary conditions for this design are the use of Czochralski silicon crystals and $25/kg polycrystalline silicon. The objective is a large-scale production facility to meet an intermediate ERDA cost goal of $2.00/W in 1982. A 6-month experimental production study of the elements of low-cost solar-cell manufacturing sequences is described as an outgrowth of the cost and manufacturing studies. This program consisted of three parts: an experimental production line study of the major variables associated with the fabrication of 3-in.-diameter silicon solar cells; a study of thick-film screen-printed silver metallization; and panel design and assembly development. (WHK)

D'Aiello, R.V.

1977-12-01T23:59:59.000Z

242

Fuel cell with electrolyte matrix assembly  

DOE Patents (OSTI)

This invention is directed to a fuel cell employing a substantially immobilized electrolyte imbedded therein and having a laminated matrix assembly disposed between the electrodes of the cell for holding and distributing the electrolyte. The matrix assembly comprises a non-conducting fibrous material such as silicon carbide whiskers having a relatively large void-fraction and a layer of material having a relatively small void-fraction.

Kaufman, Arthur (West Orange, NJ); Pudick, Sheldon (Sayreville, NJ); Wang, Chiu L. (Edison, NJ)

1988-01-01T23:59:59.000Z

243

Focusing on RISC assembly in mammalian cells  

SciTech Connect

RISC (RNA-induced silencing complex) is a central protein complex in RNAi, into which a siRNA strand is assembled to become effective in gene silencing. By using an in vitro RNAi reaction based on Drosophila embryo extract, an asymmetric model was recently proposed for RISC assembly of siRNA strands, suggesting that the strand that is more loosely paired at its 5' end is selectively assembled into RISC and results in target gene silencing. However, in the present study, we were unable to establish such a correlation in cell-based RNAi assays, as well as in large-scale RNAi data analyses. This suggests that the thermodynamic stability of siRNA is not a major determinant of gene silencing in mammalian cells. Further studies on fork siRNAs showed that mismatch at the 5' end of the siRNA sense strand decreased RISC assembly of the antisense strand, but surprisingly did not increase RISC assembly of the sense strand. More interestingly, measurements of melting temperature showed that the terminal stability of fork siRNAs correlated with the positions of the mismatches, but not gene silencing efficacy. In summary, our data demonstrate that there is no definite correlation between siRNA stability and gene silencing in mammalian cells, which suggests that instead of thermodynamic stability, other features of the siRNA duplex contribute to RISC assembly in RNAi.

Hong Junmei; Wei Na [Institute of Molecular Medicine, Peking University, 100871 Beijing (China); Chalk, Alistair [Department of Molecular Medicine and Surgery, Karolinska Institute, 171 76 Stockholm (Sweden); Wang Jue [Institute of Molecular Medicine, Peking University, 100871 Beijing (China); Song, Yutong [Department of Woman and Child Health, Karolinska Institute, 171 76 Stockholm (Sweden); Yi Fan [Institute of Molecular Medicine, Peking University, 100871 Beijing (China); Qiao Renping [State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Science, Peking University, Beijing 100083 (China); Sonnhammer, Erik L.L. [Stockholm Bioinformatics Center, 171 74 Stockholm (Sweden); Wahlestedt, Claes [Scripps Florida, Jupiter, FL 33458 (United States); Liang Zicai [Institute of Molecular Medicine, Peking University, 100871 Beijing (China); Department of Molecular Medicine and Surgery, Karolinska Institute, 171 76 Stockholm (Sweden)], E-mail: liangz@pku.edu.cn; Du, Quan [Institute of Molecular Medicine, Peking University, 100871 Beijing (China)], E-mail: quan.du@pku.edu.cn

2008-04-11T23:59:59.000Z

244

Assembly flow simulation of a radar  

Science Conference Proceedings (OSTI)

A discrete event simulation model has been developed to predict the assembly flow time of a new radar product. The simulation was the key tool employed to identify flow constraints. The radar, production facility, and equipment complement were designed, arranged, and selected to provide the most manufacturable assembly possible. A goal was to reduce the assembly and testing cycle time from twenty-six weeks to six weeks. A computer software simulation package (SLAM II) was utilized as the foundation a for simulating the assembly flow time. FORTRAN subroutines were incorporated into the software to deal with unique flow circumstances that were not accommodated by the software. Detailed information relating to the assembly operations was provided by a team selected from the engineering, manufacturing management, inspection, and production assembly staff. The simulation verified that it would be possible to achieve the cycle time goal of six weeks. Equipment and manpower constraints were identified during the simulation process and adjusted as required to achieve the flow with a given monthly production requirement. The simulation is being maintained as a planning tool to be used to identify constraints in the event that monthly output is increased. ``What-if`` studies have been conducted to identify the cost of reducing constraints caused by increases in output requirement.

Rutherford, W.C.; Biggs, P.M.

1993-10-01T23:59:59.000Z

245

Housing assembly for electric vehicle transaxle  

DOE Patents (OSTI)

Disclosed is a drive assembly (10) for an electrically powered vehicle (12). The assembly includes a transaxle (16) having a two-speed transmission (40) and a drive axle differential (46) disposed in a unitary housing assembly (38), an oil-cooled prime mover or electric motor (14) for driving the transmission input shaft (42), an adapter assembly (24) for supporting the prime mover on the transaxle housing assembly, and a hydraulic system (172) providing pressurized oil flow for cooling and lubricating the electric motor and transaxle and for operating a clutch (84) and a brake (86) in the transmission to shift between the two-speed ratios of the transmission. The adapter assembly allows the prime mover to be supported in several positions on the transaxle housing. The brake is spring-applied and locks the transmission in its low-speed ratio should the hydraulic system fail. The hydraulic system pump is driven by an electric motor (212) independent of the prime mover and transaxle.

Kalns, Ilmars (Northville, MI)

1981-01-01T23:59:59.000Z

246

Advancing Design-for-Assembly: The Next Generation in Assembly Planning  

SciTech Connect

At the 1995 IEEE Symposium on Assembly and Task Planning, Sandia National Laboratories introduced the Archimedes 2 Software Tool [2]. The system was described as a second-generation assembly planning system that allowed preliminmy application of awembly planning for industry, while solidly supporting further research in planning techniques. Sandia has worked closely with indust~ and academia over the last four years. The results of these working relationships have bridged a gap for the next generation in assembly planning. Zke goal of this paper is to share Sandia 's technological advancements in assembly planning over the last four years and the impact these advancements have made on the manufacturing communip.

Calton, T.L.

1998-12-09T23:59:59.000Z

247

SF6432-FP (02-01-12) Firm Fixed Price  

NLE Websites -- All DOE Office Websites (Extended Search)

2/01/12 2/01/12 Page 1 of 21 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-FP (02/01/12) Section II STANDARD TERMS AND CONDITIONS FOR FIRM-FIXED PRICE CONTRACTS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS AND CONDITIONS (Ts&Cs) APPLICABLE LAW ASSIGNMENT BANKRUPTCY DEFINITIONS DISPUTES EXCESS FREIGHT CHARGES EXCUSABLE DELAYS EXPORT CONTROL EXTRAS AND VARIATION IN QUANTITY GOVERNMENT PROPERTY MATERIAL AND EQUIPMENT MANUFACTURING AND TESTING STANDARDS

248

MRST partons generated in a fixed-flavor scheme.  

E-Print Network (OSTI)

ar X iv :h ep -p h/ 06 03 14 3v 1 2 0 M ar 2 00 6 IPPP/06/13 DCPT/06/26 Cavendish-HEP-2006/07 MRST partons generated in a fixed-flavour scheme A.D. Martina, W.J. Stirlinga and R.S. Thornec,1 a Institute for Particle Physics Phenomenology... of such an inconsistency on a physical quantity is provided by the evolution of FL. At leading order the gluon contribution to FL is FL = ?S C1Lg ? g, (2) 2We thank Eric Laenen for clarifying this point. 1 3-Flavour Gluon -4 -2 0 2 4 6 10 -5 10 -4 10 -3 10 -2 10 -1 1 x g(x...

Martin, A D; Stirling, W James; Thorne, Robert S

249

Breakout Items Action Items Fixed Price Contracting Topic Group Summaries  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Albuquerque Meeting - July 1997 Albuquerque Meeting - July 1997 Breakout Items Action Items Fixed Price Contracting Topic Group Summaries TOPIC GROUP SUMMARIES Routing * Group reviewed and approved fourth draft of working paper "Routing Issues Related to U.S. Department of Energy Radioactive Materials Transportation: Discussion and Analysis" * Group submitted working paper and draft list of "Stakeholder Recommendations" to TEC/WG and DOE Group reached consensus on three major routing-related issues: * DOE should develop standardized, cooperative approach to route selection * DOE needs to involve all stakeholders * DOE should submit final version of Group's working paper to other federal entities Future topics for consideration: * routing issues relevant to tribal entities and local jurisdictions

250

Modeling Thermal Fatigue in CPV Cell Assemblies (Presentation)  

DOE Green Energy (OSTI)

This presentation outlines the modeling of thermal fatigue in concentrating photovoltaic (CPV) assemblies.

Bosco, N.; Panchagade, D.; Kurtz, S.

2011-02-01T23:59:59.000Z

251

Self-assembly of Chiral Tubules  

E-Print Network (OSTI)

The efficient and controlled assembly of complex structures from macromolecular building blocks is a critical open question in both biological systems and nanoscience. Using molecular dynamics simulations we study the self-assembly of tubular structures from model macromolecular monomers with multiple binding sites on their surfaces [Cheng et al., Soft Matter 8, 5666-5678 (2012)]. In this work we add chirality to the model monomer and a lock-and-key interaction. The self-assembly of free monomers into tubules yields a pitch value that often does not match the chirality of the monomer (including achiral monomers). We show that this mismatch occurs because of a twist deformation that brings the lateral interaction sites into alignment when the tubule pitch differs from the monomer chirality. The energy cost for this deformation is small as the energy distributions substantially overlap for small differences in the pitch and chirality. In order to control the tubule pitch by preventing the twist deformation, the interaction between the vertical surfaces must be increased without resulting in kinetically trapped structures. For this purpose, we employ the lock-and-key interactions and obtain good control of the self-assembled tubule pitch. These results explain some fundamental features of microtubules. The vertical interaction strength is larger than the lateral in microtubules because this yields a controlled assembly of tubules with the proper pitch. We also generally find that the control of the assembly into tubules is difficult, which explains the wide range of pitch and protofilament number observed in microtubule assembly.

Shengfeng Cheng; Mark J. Stevens

2013-11-19T23:59:59.000Z

252

Solar central receiver heliostat reflector assembly  

SciTech Connect

A heliostat reflector assembly for a solar central receiver system comprises a light-weight, readily assemblable frame which supports a sheet of stretchable reflective material and includes mechanism for selectively applying tension to and positioning the sheet to stretch it to optical flatness. The frame is mounted on and supported by a pipe pedestal assembly that, in turn, is installed in the ground. The frame is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e. central receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The frame may include a built-in system for testing for optical flatness of the reflector. The preferable geometric configuration of the reflector is octagonal; however, it may be other shapes, such as hexagonal, pentagonal or square. Several different embodiments of means for tensioning and positioning the reflector to achieve optical flatness are disclosed. The reflector assembly is based on the stretch frame concept which provides an extremely light-weight, simple, low-cost reflector assembly that may be driven for positioning and tracking by a light-weight, inexpensive drive system.

Horton, Richard H. (Schenectady, NY); Zdeb, John J. (Clifton Park, NY)

1980-01-01T23:59:59.000Z

253

Assembling and Installing LRUs for NIF  

SciTech Connect

Within the 192 National Ignition Facility (NIF) beamlines, there are over 7000 large (40 x 40 cm) optical components, including laser glass, mirrors, lenses, and polarizers. These optics are held in large opto-mechanical assemblies called line-replaceable units (LRUs). Each LRU has strict specifications with respect to cleanliness, alignment, and wavefront so that once activated, each NIF beamline will meet its performance requirements. NIF LRUs are assembled, tested, and refurbished in on-site cleanroom facilities. The assembled LRUs weigh up to 1800 kilograms, and are about the size of a phone booth. They are transported in portable clean canisters and inserted into the NIF beampath using robotic transporters. This plug and play design allows LRUs to be easily removed from the beampath for maintenance or upgrades. Commissioning of the first NIF quad, an activity known as NIF Early Light (NEL), has validated LRU designs and architecture, as well as demonstrated that LRUs can be assembled and installed as designed. Furthermore, it has served to develop key processes and tools forming the foundation for NIF s long-term LRU production and maintenance strategy. As we look forward to building out the rest of NIF, the challenge lies in scaling up the production rate while maintaining quality, implementing process improvements, and fully leveraging the learning and experience gained from NEL. This paper provides an overview of the facilities, equipment and processes used to assemble and install LRUs in NIF.

Bonanno, R E

2003-12-31T23:59:59.000Z

254

Simplified flangeless unisex waveguide coupler assembly  

DOE Patents (OSTI)

A unisex coupler assembly is disclosed capable of providing a leak tight coupling for waveguides with axial alignment of the waveguides and rotational capability. The sealing means of the coupler assembly are not exposed to RF energy, and the coupler assembly does not require the provision of external flanges on the waveguides. In a preferred embodiment, O ring seals are not used and the coupler assembly is, therefore, bakeable at a temperature up to about 150{degrees}C. The coupler assembly comprises a split collar which clamps around the waveguides and a second collar which fastens to the split collar. The split collar contains an inner annular groove. Each of the waveguides is provided with an external annular groove which receives a retaining ring. The split collar is clamped around one of the waveguides with the inner annular groove of the split collar engaging the retaining ring carried in the external annular groove in the waveguide. The second collar is then slipped over the second waveguide behind the annular groove and retaining ring therein and the second collar is coaxially secured by fastening means to the split collar to draw the respective waveguides together by coaxial force exerted by the second collar against the retaining ring on the second waveguide. A sealing ring is placed against an external sealing surface at a reduced external diameter end formed on one waveguide to sealingly engage a corresponding sealing surface on the other waveguide as the waveguides are urged toward each other.

DiMartino, M.; Moeller, C.P.

1992-12-31T23:59:59.000Z

255

Hydraulically actuated gas exchange valve assembly and engine using same  

DOE Patents (OSTI)

An engine comprises a housing that defines a hollow piston cavity that is separated from a gas passage by a valve seat. The housing further defines a biasing hydraulic cavity and a control hydraulic cavity. A gas valve member is also included in the engine and is movable relative to the valve seat between an open position at which the hollow piston cavity is open to the gas passage and a closed position in which the hollow piston cavity is blocked from the gas passage. The gas valve member includes a ring mounted on a valve piece and a retainer positioned between the ring and the valve piece. A closing hydraulic surface is included on the gas valve member and is exposed to liquid pressure in the biasing hydraulic cavity.

Carroll, Thomas S. (Peoria, IL); Taylor, Gregory O. (Hinsdale, IL)

2002-09-03T23:59:59.000Z

256

California State Assembly | Open Energy Information  

Open Energy Info (EERE)

Assembly Assembly Jump to: navigation, search Name California State Assembly Place Sacramento, California Zip 94249-0000 Product The body of the state of California that reviews bills, laws and acts. Coordinates 38.579065°, -121.491014° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.579065,"lon":-121.491014,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

257

Photovoltaic assemblies and methods for transporting  

DOE Patents (OSTI)

A PV assembly including framework, PV laminate(s), and a stiffening device. The framework includes a perimeter frame at least 10 feet in length and at least 5 feet in width. The PV laminate(s) are assembled to the perimeter frame to define a receiving zone having a depth of not more than 8 inches. The stiffening device is associated with the framework and is configured to provide a first state and a second state. In the first state, an entirety of the stiffening device is maintained within the receiving zone. In the second state, at least a portion of the stiffening device projects from the receiving zone. The stiffening device enhances a stiffness of the PV assembly in a plane of the perimeter frame, and can include rods defining truss structures.

Almy, Charles; Campbell, Matt; Sandler, Reuben; Wares, Brian; Wayman, Elizabeth

2013-09-17T23:59:59.000Z

258

Low thermal resistance power module assembly  

DOE Patents (OSTI)

A power module assembly with low thermal resistance and enhanced heat dissipation to a cooling medium. The assembly includes a heat sink or spreader plate with passageways or openings for coolant that extend through the plate from a lower surface to an upper surface. A circuit substrate is provided and positioned on the spreader plate to cover the coolant passageways. The circuit substrate includes a bonding layer configured to extend about the periphery of each of the coolant passageways and is made up of a substantially nonporous material. The bonding layer may be solder material which bonds to the upper surface of the plate to provide a continuous seal around the upper edge of each opening in the plate. The assembly includes power modules mounted on the circuit substrate on a surface opposite the bonding layer. The power modules are positioned over or proximal to the coolant passageways.

Hassani, Vahab (Denver, CO); Vlahinos, Andreas (Castle Rock, CO); Bharathan, Desikan (Arvada, CO)

2007-03-13T23:59:59.000Z

259

Solvation Effects in Self-Assembled Systems  

SciTech Connect

Many types of self-assembly can be found in nature. They include crystallization, the formation of micelles, and the folding of proteins. Recently there has been much interest in pursuing nano-to-microscopically engineered materials by way of self-assembly on imprinted or templated surfaces. In all of these diverse cases, wetting plays a critical role in the assembly process. Wetting involves the interactions of the substrate or amphiphilic molecule or macromolecule with a solvent. In many self-assembled systems we find that the critical feature of the system is a substrate! or macromolecule with a both hydrophilic and hydrophobic nature. In this paper we discuss the wetting properties of a striped surface where the stripes represent alternating chemical characteristics. We show how the chemical heterogeneity affects the wetting properties of the surface (e.g. the static contact angle), and discuss the length limitations on the soft lithography approach. In this paper, the wetting of a chemically heterogeneous surface is studied using a nonlocal Density Functional Theory (DFT). The results for the heterogeneous surface model we discuss have immediate implications for soft-lithography by self-assembly. It also lends fundamental insight into the mechanisms controlling self-assembly of macromolecules. We present the results of nonlocal 2D DFT calculations on the wetting properties of chemically heterogeneous surfaces. These calculations showed complex density distributions and phase behavior as a result of the heterogeneity. The location of the wetting transition are found to be strongly dependent on the extent and strength of the heterogeneity, and complete wetting was suppressed altogether if the hydrophobic parts of the surface were large enough. In these cases, the condensed nanophase may crystallize if the hydrophilic surface-fluid interactions are strong enough. By exploring the phase space including strength of hydrophilic interactions and extent of chemical heterogeneity, an operational phase diagram was established that could be used for designing nanoscopically tailored devices and materials.

Frink, L.J.D.

1998-11-10T23:59:59.000Z

260

Test Plan for Evaluating Hammer and Fixed Cutter Grinders Using Multiple Varieties and Moistures of Biomass Feedstock  

Science Conference Proceedings (OSTI)

Biomass preprocessing is a critical operation in the preparation of feedstock for the front-end of a cellulosic ethanol biorefinery. Its purpose is to chop, grind, or otherwise format the biomass material into a suitable feedstock for optimum conversion to ethanol and other bioproducts. Without this operation, the natural size, bulk density, and flowability characteristics of harvested biomass would decrease the capacities and efficiencies of feedstock assembly unit operations and biorefinery conversion processes to the degree that programmatic cost targets could not be met. The preprocessing unit operation produces a bulk flowable material that 1) improves handling and conveying efficiencies throughout the feedstock assembly system and biorefinery 2) increases biomass surface areas for improved pretreatment efficiencies, 3) reduces particle sizes for improved feedstock uniformity and density, and 4) fractionates structural components for improved compositional quality. The Idaho National Laboratory (INL) is tasked with defining the overall efficiency/effectiveness of current commercial hammer and fixed cutter grinding systems and other connecting systems such as harvest and collection, storage, transportation, and handling for a wide variety of feedstock types used in bioethanol or syngas production. This test plan details tasks and activities for two separate full-scale grinding tests: Material Characterization Test and Machine Characterization Test. For the Material Characterization Test, a small amount (~5-7 tons each) of several feedstock varieties will be ground. This test will define the fractionation characteristics of the grinder that affect the bulk density, particle size distribution, and quality of the size reduced biomass resulting from different separation screen sizes. A specific screen size will be selected based on the characteristics of the ground material. The Machine Characterization Test will then use this selected screen to grind several 30-ton batches of different feedstock varieties and moistures. This test will focus on identifying the performance parameters of the grinding system specific to the feed, fractionation, and screen separation components and their affect on machine capacity and efficiency.

Not listed

2007-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Flame quality monitor system for fixed firing rate oil burners  

DOE Patents (OSTI)

A method and apparatus for determining and indicating the flame quality, or efficiency of the air-fuel ratio, in a fixed firing rate heating unit, such as an oil burning furnace, is provided. When the flame brightness falls outside a preset range, the flame quality, or excess air, has changed to the point that the unit should be serviced. The flame quality indicator output is in the form of lights mounted on the front of the unit. A green light indicates that the flame is about in the same condition as when the burner was last serviced. A red light indicates a flame which is either too rich or too lean, and that servicing of the burner is required. At the end of each firing cycle, the flame quality indicator goes into a hold mode which is in effect during the period that the burner remains off. A yellow or amber light indicates that the burner is in the hold mode. In this mode, the flame quality lights indicate the flame condition immediately before the burner turned off. Thus the unit can be viewed when it is off, and the flame condition at the end of the previous firing cycle can be observed.

Butcher, T.A.; Cerniglia, P.

1990-10-23T23:59:59.000Z

262

Isolated thermocouple amplifier system for stirred fixed-bed gasifier  

DOE Patents (OSTI)

A sensing system is provided for determining the bed temperature profile of the bed of a stirred, fixed-bed gasifier including a plurality of temperature sensors for sensing the bed temperature at different levels, a transmitter for transmitting data based on the outputs of the sensors to a remote operator's station, and a battery-based power supply. The system includes an isolation amplifier system comprising a plurality of isolation amplifier circuits for amplifying the outputs of the individual sensors. The isolation amplifier circuits each comprise an isolation operational amplifier connected to a sensor; a first flying capacitor circuit for, in operation, controlling the application of power from the power supply to the isolation amplifier; an output sample and hold circuit connected to the transmitter; a second flying capacitor circuit for, in operation, controlling the transfer of the output of the isolation amplifier to the sample and hold circuit; and a timing and control circuit for activating the first and second capacitor circuits in predetermined timed sequence. 4 figs.

Fasching, G.E.

1989-08-08T23:59:59.000Z

263

In celebration of the fixed target program with the Tevatron  

Science Conference Proceedings (OSTI)

The Tevatron is the world's first large superconducting accelerator. With its construction, we gained the dual opportunities to advance the state of the art in accelerator technology with the machine itself and in particle physics with the experiments that became possible in a higher energy regime. There have been 43 experiments in the Tevatron fixed target program. Many of these are better described as experimental programs, each with a broad range of physics goals and results, and more than 100 collaborating physicists and engineers. The results of this program are three-fold: (1) new technologies in accelerators, beams and detectors which advanced the state of the art; (2) new experimental results published in the refereed physics journals; and (3) newly trained scientists who are both the next generation of particle physicists and an important part of the scientific, technical and educational backbone of the country as a whole. In this book they compile these results. There are sections from each experiment including what their physics goals and results were, what papers were published, and which students have received degrees. Summaries of these results from the program as a whole are quite interesting, but the physics results from this program are too broad to summarize globally. The most important of the results appear in later sections of this booklet.

Jeffrey A. Appel et al.

2001-12-28T23:59:59.000Z

264

Flame quality monitor system for fixed firing rate oil burners  

DOE Patents (OSTI)

A method and apparatus for determining and indicating the flame quality, or efficiency of the air-fuel ratio, in a fixed firing rate heating unit, such as an oil burning furnace, is provided. When the flame brightness falls outside a preset range, the flame quality, or excess air, has changed to the point that the unit should be serviced. The flame quality indicator output is in the form of lights mounted on the front of the unit. A green light indicates that the flame is about in the same condition as when the burner was last serviced. A red light indicates a flame which is either too rich or too lean, and that servicing of the burner is required. At the end of each firing cycle, the flame quality indicator goes into a hold mode which is in effect during the period that the burner remains off. A yellow or amber light indicates that the burner is in the hold mode. In this mode, the flame quality lights indicate the flame condition immediately before the burner turned off. Thus the unit can be viewed when it is off, and the flame condition at the end of the previous firing cycle can be observed.

Butcher, Thomas A. (Pt. Jefferson, NY); Cerniglia, Philip (Moriches, NY)

1992-01-01T23:59:59.000Z

265

Isolated thermocouple amplifier system for stirred fixed-bed gasifier  

DOE Patents (OSTI)

A sensing system is provided for determining the bed temperature profile of the bed of a stirred, fixed-bed gasifier including a plurality of temperature sensors for sensing the bed temperature at different levels, a transmitter for transmitting data based on the outputs of the sensors to a remote operator's station, and a battery-based power supply. The system includes an isolation amplifier system comprising a plurality of isolation amplifier circuits for amplifying the outputs of the individual sensors. The isolation amplifier circuits each comprise an isolation operational amplifier connected to a sensor; a first "flying capacitor" circuit for, in operation, controlling the application of power from the power supply to the isolation amplifier; an output sample and hold circuit connected to the transmitter; a second "flying capacitor" circuit for, in operation, controlling the transfer of the output of the isolation amplifier to the sample and hold circuit; and a timing and control circuit for activating the first and second capacitor circuits in a predetermined timed sequence.

Fasching, George E. (Morgantown, WV)

1992-01-01T23:59:59.000Z

266

Ash level meter for a fixed-bed coal gasifier  

DOE Patents (OSTI)

An ash level meter for a fixed-bed coal gasifier is provided which utilizes the known ash level temperature profile to monitor the ash bed level. A bed stirrer which travels up and down through the extent of the bed ash level is modified by installing thermocouples to measure the bed temperature as the stirrer travels through the stirring cycle. The temperature measurement signals are transmitted to an electronic signal process system by an FM/FM telemetry system. The processing system uses the temperature signals together with an analog stirrer position signal, taken from a position transducer disposed to measure the stirrer position to compute the vertical location of the ash zone upper boundary. The circuit determines the fraction of each total stirrer cycle time the stirrer-derived bed temperature is below a selected set point, multiplies this fraction by the average stirrer signal level, multiplies this result by an appropriate constant and adds another constant such that a 1 to 5 volt signal from the processor corresponds to a 0 to 30 inch span of the ash upper boundary level. Three individual counters in the processor store clock counts that are representative of: (1) the time the stirrer temperature is below the set point (500.degree. F.), (2) the time duration of the corresponding stirrer travel cycle, and (3) the corresponding average stirrer vertical position. The inputs to all three counters are disconnected during any period that the stirrer is stopped, eliminating corruption of the measurement by stirrer stoppage.

Fasching, George E. (Morgantown, WV)

1984-01-01T23:59:59.000Z

267

Assembly planning at the micro scale  

SciTech Connect

This paper investigates a new aspect of fine motion planning for the micro domain. As parts approach 1--10 {micro}m or less in outside dimensions, interactive forces such as van der Waals and electrostatic forces become major factors which greatly change the assembly sequence and path plans. It has been experimentally shown that assembly plans in the micro domain are not reversible, motions required to pick up a part are not the reverse of motions required to release a part. This paper develops the mathematics required to determine the goal regions for pick up, holding, and release of a micro-sphere being handled by a rectangular tool.

Feddema, J.T.; Xavier, P.; Brown, R.

1998-05-14T23:59:59.000Z

268

Electrochemical cell assembled in discharged state  

DOE Patents (OSTI)

A secondary, electrochemical cell is assembled in a completely discharged state within a sealed containment. As assembled, the cell includes a positive electrode separated from a negative electrode by a molten salt electrolyte. The positive electrode is contained within a porous structure, permitting passage of molten electrolyte, and includes one or more layers of a metallic mesh, e.g. iron, impregnated with an intimate mixture of lithium sulfide and the electrolyte. The negative electrode is a porous plaque of aluminum metal. Prior to using the cell, an electrical charge forms lithium-aluminum alloy within the negative electrode and metal sulfide within the positive electrode.

Yao, Neng-Ping (Hinsdale, IL); Walsh, William J. (Naperville, IL)

1976-01-01T23:59:59.000Z

269

pH Meter probe assembly  

DOE Patents (OSTI)

An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe.

Hale, Charles J. (San Jose, CA)

1983-01-01T23:59:59.000Z

270

pH Meter probe assembly  

DOE Patents (OSTI)

An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe. 1 fig.

Hale, C.J.

1983-11-15T23:59:59.000Z

271

Vented Cavity Radiant Barrier Assembly And Method  

DOE Patents (OSTI)

A vented cavity radiant barrier assembly (2) includes a barrier (12), typically a PV module, having inner and outer surfaces (18, 22). A support assembly (14) is secured to the barrier and extends inwardly from the inner surface of the barrier to a building surface (14) creating a vented cavity (24) between the building surface and the barrier inner surface. A low emissivity element (20) is mounted at or between the building surface and the barrier inner surface. At least part of the cavity exit (30) is higher than the cavity entrance (28) to promote cooling air flow through the cavity.

Dinwoodie, Thomas L. (Piedmont, CA); Jackaway, Adam D. (Berkeley, CA)

2000-05-16T23:59:59.000Z

272

Fixed-bed bioreactor system for the microbial solubilization of coal  

DOE Patents (OSTI)

A fixed-bed bioreactor system for the conversion of coal into microbially solubilized coal products. The fixed-bed bioreactor continuously or periodically receives coal and bio-reactants and provides for the large scale production of microbially solubilized coal products in an economical and efficient manner. An oxidation pretreatment process for rendering coal uniformly and more readily susceptible to microbial solubilization may be employed with the fixed-bed bioreactor. 1 fig., 1 tab.

Scott, C.D.; Strandberg, G.W.

1987-09-14T23:59:59.000Z

273

An O(n^2) Algorithm for Lot Sizing with Inventory Bounds and Fixed ...  

E-Print Network (OSTI)

Jun 26, 2007 ... Abstract: Lot-sizing problems with inventory bounds and fixed charges have not received much attention in the literature, even though there are ...

274

A survey study comparing adult orthodontic patient quality of life between Invisalign and fixed appliances.  

E-Print Network (OSTI)

??M.S. We aimed to examine differences in treatment impacts and quality of life between adult orthodontic patients with Invisalign and fixed appliances. Adults represent a… (more)

Nicholson, Keith Christopher

2011-01-01T23:59:59.000Z

275

7.2.6. What intervals contain a fixed percentage of the ...  

Science Conference Proceedings (OSTI)

... Comparisons based on data from one process 7.2.6. What intervals contain a fixed percentage of the population values? ...

2012-03-31T23:59:59.000Z

276

SF 6432-FE (02-01-13) Fixed Price Outside US  

NLE Websites -- All DOE Office Websites (Extended Search)

CORPORATION SF 6432-FE (072013) SECTION II STANDARD TERMS AND CONDITIONS FOR FIXED PRICE CONTRACTS OUTSIDE OF THE UNITED STATES OF AMERICA THE FOLLOWING CLAUSES APPLY TO...

277

SF6432-NI (02-01-12) Fixed Price Former Soviet Union  

NLE Websites -- All DOE Office Websites (Extended Search)

CORPORATION SF 6432-NI (072013) SECTION II STANDARD TERMS AND CONDITIONS FOR FIXED PRICE CONTRACTS WITH THE NEWLY INDEPENDENT STATES OF THE FORMER SOVIET UNION INDEX OF...

278

Three loop MSbar transversity operator anomalous dimensions for fixed moment n <= 8  

E-Print Network (OSTI)

We compute the anomalous dimensions of the transversity operator at three loops in the MSbar scheme for fixed moment n where n n <= 7.

J. A. Gracey

2006-11-07T23:59:59.000Z

279

Research on virtual assembly of supercritical boiler  

Science Conference Proceedings (OSTI)

Supercritical boiler is an important measure to solve problems like electricity shortage or energy intensity, with its high combustion efficiency. As supercritical boiler is a large and complex product, it may appear some problems of collision, location ... Keywords: interaction, lightweight model, supercritical boiler, virtools, virtual assembly, virtual reality

Pi-Guang Wei; Wen-Hua Zhu; Hao Zhou

2010-09-01T23:59:59.000Z

280

Measurement Protocols for Optimized Fuel Assembly Tags  

Science Conference Proceedings (OSTI)

This report describes the measurement protocols for optimized tags that can be applied to standard fuel assemblies used in light water reactors. This report describes work performed by the authors at Pacific Northwest National Laboratory for NA-22 as part of research to identify specific signatures that can be developed to support counter-proliferation technologies.

Gerlach, David C.; Mitchell, Mark R.; Reid, Bruce D.; Gesh, Christopher J.; Hurley, David E.

2008-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Fabrication of a Kevlar liner assembly  

Science Conference Proceedings (OSTI)

Several liner assemblies were fabricated with Kevlar 49 and epoxy using various wet layup and prepreg processes. A production process, using prepreg material, was developed for fabricating the liner and a wet layup molding process was used to fabricate the Kevlar hat-shaped tunnels. Fabrication of the tunnels using Kevlar prepreg with an autoclave curving process was evaluated.

Schloman, A.H.

1980-07-01T23:59:59.000Z

282

Mounting assembly for heater thermostat control  

Science Conference Proceedings (OSTI)

This patent describes an assembly for mounting a thermostat control on the outer wall of a heater tank including an external spud in which a heating element is mounted. The mounting assembly comprises: a first bracket made from a spring material and including a body having an opening adapted to lockingly fit over the tank spud. The first bracket further includes a pair of laterally-spaced legs extending from the body and having a bent upper end portion adapted to apply spring pressure toward the tank outer wall when the first bracket is locked on the tank spud. Each of the legs includes in the upper end portion an elongated slot having an upper end; a second bracket carrying the thermostat control and having a pair of laterally -spaced, upstanding ears adapted to fit beneath the upper end portions of the legs. Each of the ears includes a nib received in a slot for interlocking the first and the second brackets and having an upper edge adapted to engage the upper end of the slot and cooperate therewith to urge the thermostat control into firmer contact with the tank outer wall in response to upward vertical movement of the second bracket relative to the first bracket; and the assembly further characterized by a retaining lip on the first bracket, the lip located between the legs and positioned to bear against the end wall of the thermostat control when the parts are in assembled position and an outward horizontal load is applied.

Murphy, M.A.

1987-04-14T23:59:59.000Z

283

Gas recombination assembly for electrochemical cells  

DOE Patents (OSTI)

An assembly for recombining gases generated in electrochemical cells wherein a catalyst strip is enveloped within a hydrophobic, gas-porous film which, in turn, is encased between gas-porous, metallic layers. The sandwich construction of metallic layers and film is formed into a spiral with a tab for connection to the cell.

Levy, Isaac (New Fairfield, CT); Charkey, Allen (Brookfield, CT)

1989-01-01T23:59:59.000Z

284

Roofing shingle assembly having solar capabilities  

Science Conference Proceedings (OSTI)

A roofing shingle assembly having solar capabilities comprising a flat main portion having upper and lower surfaces, and curved segments integral with the upper and lower edges of said shingle. The roofing shingles are mounted in overlapping parallel array with the curved segments interconnected to define a fluid conduit enclosure. Mounting brackets for the shingles are secured on the roof rafters.

Murphy, J.A.

1982-03-16T23:59:59.000Z

285

Assembly Code Analysis Using Stochastic Process Algebra  

Science Conference Proceedings (OSTI)

Currently compilers contain a large number of optimisations which are based on a set of heuristics that are not guaranteed to be effective to improve the performance metrics. In this paper, we propose a strategy which allows us the analysis and the choice ... Keywords: Assembly code, Code optimisation, Data dependencies graph, Performance analysis, Stochastic process algebra

Lamia Djoudi; Leïla Kloul

2008-08-01T23:59:59.000Z

286

RELIABILITY BASED DESIGN OF FIXED FOUNDATION WIND TURBINES  

SciTech Connect

Recent analysis of offshore wind turbine foundations using both applicable API and IEC standards show that the total load demand from wind and waves is greatest in wave driven storms. Further, analysis of overturning moment loads (OTM) reveal that impact forces exerted by breaking waves are the largest contributor to OTM in big storms at wind speeds above the operating range of 25 m/s. Currently, no codes or standards for offshore wind power generators have been adopted by the Bureau of Ocean Energy Management Regulation and Enforcement (BOEMRE) for use on the Outer Continental Shelf (OCS). Current design methods based on allowable stress design (ASD) incorporate the uncertainty in the variation of loads transferred to the foundation and geotechnical capacity of the soil and rock to support the loads is incorporated into a factor of safety. Sources of uncertainty include spatial and temporal variation of engineering properties, reliability of property measurements applicability and sufficiency of sampling and testing methods, modeling errors, and variability of estimated load predictions. In ASD these sources of variability are generally given qualitative rather than quantitative consideration. The IEC 61400‐3 design standard for offshore wind turbines is based on ASD methods. Load and resistance factor design (LRFD) methods are being increasingly used in the design of structures. Uncertainties such as those listed above can be included quantitatively into the LRFD process. In LRFD load factors and resistance factors are statistically based. This type of analysis recognizes that there is always some probability of failure and enables the probability of failure to be quantified. This paper presents an integrated approach consisting of field observations and numerical simulation to establish the distribution of loads from breaking waves to support the LRFD of fixed offshore foundations.

Nichols, R.

2013-10-14T23:59:59.000Z

287

Self-assembled nanolaminate coatings (SV)  

Science Conference Proceedings (OSTI)

Sandia National Laboratories (Sandia) and Lockheed Martin Aeronautics (LM Aero) are collaborating to develop affordable, self-assembled, nanocomposite coatings and associated fabrication processes that will be tailored to Lockheed Martin product requirements. The purpose of this project is to develop a family of self-assembled coatings with properties tailored to specific performance requirements, such as antireflective (AR) optics, using Sandia-developed self-assembled techniques. The project met its objectives by development of a simple and economic self-assembly processes to fabricate multifunctional coatings. Specifically, materials, functionalization methods, and associated coating processes for single layer and multiple layers coatings have been developed to accomplish high reflective coatings, hydrophobic coatings, and anti-reflective coatings. Associated modeling and simulations have been developed to guide the coating designs for optimum optical performance. The accomplishments result in significant advantages of reduced costs, increased manufacturing freedom/producibility, improved logistics, and the incorporation of new technology solutions not possible with conventional technologies. These self-assembled coatings with tailored properties will significantly address LMC's needs and give LMC a significant competitive lead in new engineered materials. This work complements SNL's LDRD and BES programs aimed at developing multifunctional nanomaterials for microelectronics and optics as well as structure/property investigations of self-assembled nanomaterials. In addition, this project will provide SNL with new opportunities to develop and apply self-assembled nanocomposite optical coatings for use in the wavelength ranges of 3-5 and 8-12 micrometers, ranges of vital importance to military-based sensors and weapons. The SANC technologies will be applied to multiple programs within the LM Company including the F-35, F-22, ADP (Future Strike Bomber, UAV, UCAV, etc.). The SANC technologies will establish LMA and related US manufacturing capability for commercial and military applications therefore reducing reliance on off-shore development and production of related critical technologies. If these technologies are successfully licensed, production of these coatings in manufactory will create significant technical employment opportunities.

Fan, H.

2012-03-01T23:59:59.000Z

288

SunShot Initiative: Flexible Assembly Solar Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

Flexible Assembly Solar Flexible Assembly Solar Technology to someone by E-mail Share SunShot Initiative: Flexible Assembly Solar Technology on Facebook Tweet about SunShot Initiative: Flexible Assembly Solar Technology on Twitter Bookmark SunShot Initiative: Flexible Assembly Solar Technology on Google Bookmark SunShot Initiative: Flexible Assembly Solar Technology on Delicious Rank SunShot Initiative: Flexible Assembly Solar Technology on Digg Find More places to share SunShot Initiative: Flexible Assembly Solar Technology on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

289

Growth and deterministic assembly of single stranded carbon nanotube  

E-Print Network (OSTI)

The ability to control the shape, position, alignment, length and assembly of carbon nanotubes over large areas has become an essential but very difficult goal in the field of nanotechnology. Current assembly efforts for ...

Doddabasanagouda, Sunil

2006-01-01T23:59:59.000Z

290

Electric field directed self assembly of nanoparticle structures  

E-Print Network (OSTI)

and Heller, M.J. (2007) Electric-field-directed assembly ofOF THE DISSERTATION Electric Field Directed Self Assembly ofof colloidal particles by electric fields. Soft Matter, 2,

Dehlinger, Dietrich Alexander

2008-01-01T23:59:59.000Z

291

Fuel assembly transfer basket for pool type nuclear reactor vessels  

DOE Patents (OSTI)

A fuel assembly transfer basket for a pool type, liquid metal cooled nuclear reactor having a side access loading and unloading port for receiving and relinquishing fuel assemblies during transfer.

Fanning, Alan W. (San Jose, CA); Ramsour, Nicholas L. (San Jose, CA)

1991-01-01T23:59:59.000Z

292

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly A New Route to Nano Self-Assembly Print Wednesday, 24 February 2010 00:00 If the promise of nanotechnology is to be fulfilled, nanoparticles will...

293

Assembling a Resolution Multiprocessor from Interface, Programming and Distributed  

E-Print Network (OSTI)

implicitly. Prolog PVM X Window TCL/TK Expect 1 Introduction Modular assembly of parallel programming systems

Taylor, Hamish

294

Analysis of Power Quality Concerns at an Automobile Assembly Plant  

Science Conference Proceedings (OSTI)

This report summarizes the findings of a general power quality (PQ) study for an automobile assembly plant.

2003-12-31T23:59:59.000Z

295

Assembly and Characterization of Nano-Complexes: Quantum ...  

Science Conference Proceedings (OSTI)

Assembly and Characterization of Nano-Complexes: Quantum Dot Encapsulated Liposomes. Idan Mandelbaum and Angela R. Hight Walker. ...

296

Directed Assembly and Fabrication by Materials Selective Fusion ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2010 TMS Annual Meeting & Exhibition. Symposium , Biological Materials Science. Presentation Title, Directed Assembly and ...

297

Durable Fuel Cell Membrane Electrode Assembly (MEA) - Energy ...  

Technology Marketing Summary The membrane electrode assembly (MEA) is an essential, yet highly expensive component of any polymer electrolyte membrane ...

298

Fundamental Problems of Nano Self-Assembly for Manufacturing ...  

Science Conference Proceedings (OSTI)

Grain Boundaries and Ultimate Strength in Bulk Nanostructured Metallic Materials ... Self Assembly in Cerium Oxide Nanoparticles: Effect of Environment.

299

Investigations of Biomass Pretreatment and Submerged Fixed-bed Fermentation  

E-Print Network (OSTI)

To improve the MixAlco process and biomass pretreatment, five studies were conducted. Three studies related to fermentation, whereas the other two investigated the effectiveness of shock tube pretreatment (STP) coupled with oxidative lime pretreatment (OLP). In the first study, the constant-selectivity assumption used in the continuum particle distribution model (CPDM) was determined to be invalid. During a 32-day batch fermentation, selectivity increased from 0.10 to 0.40 g acid/g non-acid volatile solid (NAVS) digested. Future revisions to CPDM should incorporate a non-constant selectivity term. In the second study, a revised procedure was developed to provide a more accurate determination of moisture content. Conventional drying at 105 degrees C allowed product acids to vaporize with water, which introduced errors. Using the revised procedure, calcium hydroxide or sodium hydroxide was added to samples at a concentration of 0.01 g base/g sample, which retained acids in the sample. The mass of additional retained material closely matched that of the additional retained acid. Three related studies involving biomass pretreatment were performed. In the first, recommended parameters for pretreating sugarcane bagasse with OLP and STP were determined. Recommended OLP parameters were 130 degrees C, 6.9-bar O2, and 2-h duration. The effects of solids concentration, liquid fill volume, particle size, type of shotgun shell, number of shocks, and pretreatment order were investigated. Liquid fill volume, particle size, type of shotgun shell, and pretreatment order were significant variables, whereas solids concentration and number of shocks were not. Recommended OLP parameters were used as a basis for an additional experiment. To simulate industrial-scale pile fermentation, fixed-bed batch fermentation of OLP + STP sugarcane bagasse was performed in 1-L PVC fermentors. Rubber mulch was used as a structural support material to prevent filter plugging, which had been reported in previous work. After 42 d, acid concentration reached 8 g/L with yield approximately 0.1 g acid/g NAVS fed. Poor fermentation performance was caused by short solid-liquid contact time and poor pH control. A third biomass pretreatment experiment investigated the potential of pretreated corn stover as a potential ruminant feed. Five samples (raw, OLP, STP, OLP + STP, and STP + OLP) were analyzed for composition and in vitro digestibility. STP followed by OLP increased neutral detergent fiber (NDF) digestibility from 49.3 to 79.0 g NDF digested/100 g NDF fed. On an organic matter basis, STP + OLP corn stover plus water-soluble extractives had a total digestible nutrients (TDN) of 74.9, nearly reaching corn grain at 88.1.

Meysing, Daniel

2011-12-01T23:59:59.000Z

300

Virtual topology dynamics and handover mechanisms in Earth-fixed LEO satellite systems  

Science Conference Proceedings (OSTI)

Handling network mobility in a highly dynamic LEO satellite network is a critical issue to achieve seamless and efficient integration of satellite and terrestrial networks. In Earth-fixed satellite systems, this task could be simplified by representing ... Keywords: Earth-fixed satellite systems, Handover mechanisms, Soft handover, Virtual node, Virtual topology

Ömer Korçak; Fatih Alagöz

2009-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

The Fixed Priority Scheduling Problem for Energy Harvesting Real-Time Systems  

E-Print Network (OSTI)

The Fixed Priority Scheduling Problem for Energy Harvesting Real-Time Systems Younès Chandarli to establish a schedulability test for a fixed priority real-time scheduling problem with energy constraints problem for energy harvesting systems was the one of Mossé [1]. The problem was solved under a very

302

Investigation on Virtual Assembly and Motion Simulation of Scroll Compressor  

Science Conference Proceedings (OSTI)

It is efficient and economic to excogitate new product of a scroll compressor by means of virtual design. It accords with development and requirement of scroll compressors products currently. Virtual assembly and motion simulation is important process ... Keywords: scroll compressor, virtual assembly, assembly scheme, motion simulation

Haisheng Li; Yinghua Chen

2010-11-01T23:59:59.000Z

303

Micro-"factory" for self-assembled peptide nanostructures  

Science Conference Proceedings (OSTI)

This study describes an integrated micro ''factory'' for the preparation of biological self-assembled peptide nanotubes and nanoparticles on a polymer chip, yielding controlled growth conditions. Self-assembled peptides constitute attractive building ... Keywords: Microfluidics, Nanostructures, On-chip fabrication, Peptide nanoparticle, Peptide tube, Self-assembled peptides

Jaime Castillo-León; Romén Rodriguez-Trujillo; Sebastian Gauthier; Alexander C. Ø. Jensen; Winnie E. Svendsen

2011-08-01T23:59:59.000Z

304

Activatable tiles: compact, robust programmable assembly and other applications  

Science Conference Proceedings (OSTI)

While algorithmic DNA self-assembly is, in theory, capable of forming complex patterns, its experimental demonstration has been limited by significant assembly errors. In this paper we describe a novel protection/deprotection strategy to strictly enforce ... Keywords: DNA-assembly, error-correction, molecular computation

Urmi Majumder; Thomas H. LaBean; John H. Reif

2007-06-01T23:59:59.000Z

305

Attributes of two-dimensional magnetic self-assembly  

Science Conference Proceedings (OSTI)

Self-assembly is a phenomenon broadly observed in nature where a vast number of various molecules spontaneously synthesize complex structures. In this article, prompted by the need for the realization of highly autonomous self-assembly systems that employ ... Keywords: Self-assembly, autonomous distributed system, embodiment, magnetism, morphology

Shuhei Miyashita; Rolf Pfeifer

2012-04-01T23:59:59.000Z

306

Electrostatic quadrupole focused particle accelerating assembly with laminar flow beam  

DOE Patents (OSTI)

A charged particle accelerating assembly provided with a predetermined ratio of parametric structural characteristics and with related operating voltages applied to each of its linearly spaced focusing and accelerating quadrupoles, thereby to maintain a particle beam traversing the electrostatic fields of the quadrupoles in the assembly in an essentially laminar flow through the assembly.

Maschke, A.W.

1984-04-16T23:59:59.000Z

307

Four-port gas separation membrane module assembly  

DOE Patents (OSTI)

A gas-separation membrane assembly, and a gas-separation process using the assembly. The assembly incorporates multiple gas-separation membranes in an array within a single vessel or housing, and is equipped with two permeate ports, enabling permeate gas to be withdrawn from both ends of the membrane module permeate pipes.

Wynn, Nicholas P. (Redwood City, CA); Fulton, Donald A. (Fairfield, CA); Lokhandwala, Kaaeid A. (Fremont, CA); Kaschemekat, Jurgen (Campbell, CA)

2010-07-20T23:59:59.000Z

308

Genome Assembly Forensics: Metrics for Assessing Assembly Correctness (Metagenomics Informatics Challenges Workshop: 10K Genomes at a Time)  

Science Conference Proceedings (OSTI)

University of Maryland's Mihai Pop on "Genome Assembly Forensics: Metrics for Assessing Assembly Correctness" at the Metagenomics Informatics Challenges Workshop held at the DOE JGI on October 12-13, 2011.

Pop, Mihai [University of Maryland

2011-10-13T23:59:59.000Z

309

T-700:Red Hat: kernel security, bug fix, and enhancement update |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

700:Red Hat: kernel security, bug fix, and enhancement update 700:Red Hat: kernel security, bug fix, and enhancement update T-700:Red Hat: kernel security, bug fix, and enhancement update August 24, 2011 - 3:45pm Addthis PROBLEM: Updated kernel packages that fix several security issues, various bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. PLATFORM: Red Hat Enterprise Linux Desktop (v. 6) Red Hat Enterprise Linux HPC Node (v. 6) Red Hat Enterprise Linux Server (v. 6) Red Hat Enterprise Linux Server EUS (v. 6.1.z) Red Hat Enterprise Linux Workstation (v. 6) ABSTRACT: Red Hat: kernel security, bug fix, and enhancement update. reference LINKS: RHSA-2011: 1189-1 Secunia Advisory: SA45746 Red Hat Download CVE-2011-1182 , CVE-2011-1576 CVE-2011-1593 , CVE-2011-1776 CVE-2011-1898 , CVE-2011-2183

310

Tubular electric heater with a thermocouple assembly  

DOE Patents (OSTI)

This patent relates to a thermocouple or other instrumentation which is installed within the walls of a tubular sheath surrounding a process device such as an electric heater. The sheath comprises two concentric tubes, one or both of which have a longitudinal, concave crease facing the other tube. The thermocouple is fixedly positioned within the crease and the outer tube is mechanically reduced to form an interference fit onto the inner tube. (auth)

House, R.K.; Williams, D.E.

1975-08-01T23:59:59.000Z

311

Conductor assembly formed about a curved axis  

DOE Patents (OSTI)

A conductor assembly of the type which, when conducting current, generates a magnetic field or in which, in the presence of a changing magnetic field, a voltage is induced. In the assembly a first layer, tubular in shape, is formed about an axis. The axis includes a curved portion along which a conductor may be positioned to define a first conductor path. The first layer also includes a curved portion having a shape that includes a curve extending along the curved portion of the axis. A first conductor is arranged about the curved portion of the first layer in a first helical configuration including a curved segment, helical in shape and formed about the curved portion of the axis. The configuration is capable of sustaining a magnetic field having multipole components oriented in directions transverse to the axis.

Meinke, Rainer (Melbourne, FL)

2011-02-15T23:59:59.000Z

312

Modular, security enclosure and method of assembly  

DOE Patents (OSTI)

A transportable, reusable rapidly assembled and disassembled, resizable modular, security enclosure utilizes a stepped panel construction. Each panel has an inner portion and an outer portion which form joints. A plurality of channels can be affixed to selected joints of the panels. Panels can be affixed to a base member and then affixed to one another by the use of elongated pins extending through the channel joints. Alternatively, the base member can be omitted and the panels themselves can be used as the floor of the enclosure. The pins will extend generally parallel to the joint in which they are located. These elongated pins are readily inserted into and removable from the channels in a predetermined sequence to allow assembly and disassembly of the enclosure. A door constructed from panels is used to close the opening to the enclosure.

Linker, Kevin L. (Albuquerque, NM); Moyer, John W. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

313

Combustor assembly in a gas turbine engine  

Science Conference Proceedings (OSTI)

A combustor assembly in a gas turbine engine. The combustor assembly includes a combustor device coupled to a main engine casing, a first fuel injection system, a transition duct, and an intermediate duct. The combustor device includes a flow sleeve for receiving pressurized air and a liner disposed radially inwardly from the flow sleeve. The first fuel injection system provides fuel that is ignited with the pressurized air creating first working gases. The intermediate duct is disposed between the liner and the transition duct and defines a path for the first working gases to flow from the liner to the transition duct. An intermediate duct inlet portion is associated with a liner outlet and allows movement between the intermediate duct and the liner. An intermediate duct outlet portion is associated with a transition duct inlet section and allows movement between the intermediate duct and the transition duct.

Wiebe, David J; Fox, Timothy A

2013-02-19T23:59:59.000Z

314

Selected Isotopes for Optimized Fuel Assembly Tags  

SciTech Connect

In support of our ongoing signatures project we present information on 3 isotopes selected for possible application in optimized tags that could be applied to fuel assemblies to provide an objective measure of burnup. 1. Important factors for an optimized tag are compatibility with the reactor environment (corrosion resistance), low radioactive activation, at least 2 stable isotopes, moderate neutron absorption cross-section, which gives significant changes in isotope ratios over typical fuel assembly irradiation levels, and ease of measurement in the SIMS machine 2. From the candidate isotopes presented in the 3rd FY 08 Quarterly Report, the most promising appear to be Titanium, Hafnium, and Platinum. The other candidate isotopes (Iron, Tungsten, exhibited inadequate corrosion resistance and/or had neutron capture cross-sections either too high or too low for the burnup range of interest.

Gerlach, David C.; Mitchell, Mark R.; Reid, Bruce D.; Gesh, Christopher J.; Hurley, David E.

2008-10-01T23:59:59.000Z

315

Electrochemical cell and method of assembly  

DOE Patents (OSTI)

A method of preparing an electrochemical cell is disclosed which permits the assembly to be accomplished in air. The cell includes a metal sulfide as the positive electrode reactant, lithium alloy as the negative electrode reactant and an alkali metal, molten salt electrolyte. Positive electrode reactant is introduced as Li.sub.2 FeS.sub.2, a single-phase compound produced by the reaction of Li.sub.2 S and FeS. The use of this compound permits introduction of lithium in an oxidized form. Additional lithium can be introduced in the negative electrode structure enclosed within an aluminum foil envelope between layers of porous aluminum. Molten salt electrolyte is added after assembly and evacuation of the cell by including an interelectrode separator that has been prewet with an organic solution of KCl.

Shimotake, Hiroshi (Hinsdale, IL); Voss, Ernst C. H. (Liederbach, DE); Bartholme, Louis G. (Joliet, IL)

1979-01-01T23:59:59.000Z

316

MITG test assembly design and fabrication  

DOE Green Energy (OSTI)

The design, analysis, and evaluation of the Modular Isotopic Thermoelectric Generator (MITG), described in an earlier paper, led to a program to build and test prototypical, modules of that generator. Each test module duplicates the thermoelectric converters, thermal insulation, housing and radiator fins of a typical generator slice, and simulates its isotope heat source module by means of an electrical heater encased in a prototypical graphite box. Once the approx. 20-watt MITG module has been developed, it can be assembled in appropriate number to form a generator design yielding the desired power output. The present paper describes the design and fabrication of the MITG test assembly, which confirmed the fabricability of the multicouples and interleaved multifoil insulation called for by the design. Test plans, procedures, instrumentation, results, and post-test analyses, as well as revised designs, fabrication procedures, and performance estimates, are described in subsequent papers in these proceedings.

Schock, A.

1983-01-01T23:59:59.000Z

317

Virus Assemblies as Templates for Nanocircuits  

DOE Green Energy (OSTI)

The goals of this project were directed at the identification and characterization of bio-mineralization processes and patterning methods for the development of nano scale materials and structures with novel energy and conductive traits. This project utilized a simple plant virus as a model template to investigate methods to attach and coat metals and other inorganic compounds onto biologically based nanotemplates. Accomplishments include: the development of robust biological nanotemplates with enhanced inorganic coating activities; novel coating strategies that allow for the deposition of a continuous inorganic layer onto a bio-nanotemplate even in the absence of a reducing agent; three-dimensional patterning methods for the assemble of nano-featured high aspect ratio surfaces and the demonstrated use of these surfaces in enhancing battery and energy storage applications. Combined results from this project have significantly advanced our understanding and ability to utilize the unique self-assembly properties of biologically based molecules to produce novel materials at the nanoscale level.

James N Culver; Michael T Harris

2011-08-31T23:59:59.000Z

318

Lead Fuel Assembly Programs Analysis: Utility Perspectives  

Science Conference Proceedings (OSTI)

Licensees, in association with nuclear fuel vendors, conduct lead fuel assembly (LFA) programs to test new design features prior to batch implementation. A limited number of LFAs are irradiated to obtain data and to confirm successful operation in the host reactor environment. The new LFA design features range from minor changes of dimensions and/or materials to an entirely new design from an alternate fuel vendor. LFA program elements can consist of design activities, methods development, analysis, ...

2013-10-17T23:59:59.000Z

319

Fuel cell assembly with electrolyte transport  

DOE Patents (OSTI)

A fuel cell assembly wherein electrolyte for filling the fuel cell matrix is carried via a transport system comprising a first passage means for conveying electrolyte through a first plate and communicating with a groove in a second plate at a first point, the first and second plates together sandwiching the matrix, and second passage means acting to carry electrolyte exclusively through the second plate and communicating with the groove at a second point exclusive of the first point.

Chi, Chang V. (Brookfield, CT)

1983-01-01T23:59:59.000Z

320

Wedge assembly for electrical transformer component spacing  

DOE Patents (OSTI)

This invention is comprised of a wedge assembly that is easily inserted between two surface to be supported thereby, and thereafter expanded to produce a selected spacing between those surfaces. This wedge assembly has two outer members that are substantially identical except that they are mirror images of each other. Oppositely directed faces of these of these outer members are substantially parallel for the purpose of contacting the surfaces to be separated. The other faces of these outer members that are directed toward each other are tapered so as to contact a center member having complementary tapers on both faces. A washer member is provided to contact a common end of the outer members, and a bolt member penetrates this washer and is threadably received in a receptor of the center member. As the bolt member is threaded into the center member, the center member is drawn further into the gap between the outer members and thereby separates these outer members to contact the surfaces to be separated. In the preferred embodiment, the contacting surfaces of the outer member and the center member are provided with guide elements. The wedge assembly is described for use in separating the secondary windings from the laminations of an electrical power transformer.

Baggett, F.E.; Cage, W.F.

1990-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Wedge assembly for electrical transformer component spacing  

DOE Patents (OSTI)

This invention is comprised of a wedge assembly that is easily inserted between two surface to be supported thereby, and thereafter expanded to produce a selected spacing between those surfaces. This wedge assembly has two outer members that are substantially identical except that they are mirror images of each other. Oppositely directed faces of these of these outer members are substantially parallel for the purpose of contacting the surfaces to be separated. The other faces of these outer members that are directed toward each other are tapered so as to contact a center member having complementary tapers on both faces. A washer member is provided to contact a common end of the outer members, and a bolt member penetrates this washer and is threadably received in a receptor of the center member. As the bolt member is threaded into the center member, the center member is drawn further into the gap between the outer members and thereby separates these outer members to contact the surfaces to be separated. In the preferred embodiment, the contacting surfaces of the outer member and the center member are provided with guide elements. The wedge assembly is described for use in separating the secondary windings from the laminations of an electrical power transformer.

Baggett, F.E.; Cage, W.F.

1990-01-01T23:59:59.000Z

322

Wedge assembly for electrical transformer component spacing  

DOE Patents (OSTI)

A wedge assembly that is easily inserted between two surfaces to be supported thereby, and thereafter expanded to produce a selected spacing between those surfaces. This wedge assembly has two outer members that are substantially identical except that they are mirror images of each other. Oppositely directed faces of these of these outer members are substantially parallel for the purpose of contacting the surfaces to be separated. The outer faces of these outer members that are directed toward each other are tapered so as to contact a center member having complementary tapers on both faces. A washer member is provided to contact a common end of the outer members, and a bolt member penetrates this washer and is threadably received in a receptor of the center member. As the bolt member is threaded into the center member, the center member is drawn further into the gap between the outer members and thereby separates these outer members to contact the surfaces to be separated. In the preferred embodiment, the contacting surfaces of the outer member and the center member are provided with guide elements. The wedge assembly is described for use in separating the secondary windings from the laminations of an electrical power transformer.

Baggett, Franklin E. (Paducah, KY); Cage, W. Franklin (LaCenter, KY)

1991-01-01T23:59:59.000Z

323

Low thermal resistance power module assembly  

DOE Patents (OSTI)

A power module assembly (400) with low thermal resistance and enhanced heat dissipation to a cooling medium. The assembly includes a heat sink or spreader plate (410) with passageways or openings (414) for coolant that extend through the plate from a lower surface (411) to an upper surface (412). A circuit substrate (420) is provided and positioned on the spreader plate (410) to cover the coolant passageways. The circuit substrate (420) includes a bonding layer (422) configured to extend about the periphery of each of the coolant passageways and is made up of a substantially nonporous material. The bonding layer (422) may be solder material which bonds to the upper surface (412) of the plate to provide a continuous seal around the upper edge of each opening (414) in the plate. The assembly includes power modules (430) mounted on the circuit substrate (420) on a surface opposite the bonding layer (422). The power modules (430) are positioned over or proximal to the coolant passageways.

Hassani, Vahab (Denver, CO); Vlahinos, Andreas (Castle Rock, CO); Bharathan, Desikan (Arvada, CO)

2010-12-28T23:59:59.000Z

324

Tools and Equipment Modeling for Automobile Interactive Assembling Operating Simulation  

SciTech Connect

Tools and equipment play an important role in the simulation of virtual assembly, especially in the assembly process simulation and plan. Because of variety in function and complexity in structure and manipulation, the simulation of tools and equipments remains to be a challenge for interactive assembly operation. Based on analysis of details and characteristics of interactive operations for automobile assembly, the functional requirement for tools and equipments of automobile assembly is given. Then, a unified modeling method for information expression and function realization of general tools and equipments is represented, and the handling methods of manual, semi-automatic, automatic tools and equipments are discussed. Finally, the application in assembly simulation of rear suspension and front suspension of Roewe 750 automobile is given. The result shows that the modeling and handling methods are applicable in the interactive simulation of various tools and equipments, and can also be used for supporting assembly process planning in virtual environment.

Wu Dianliang; Zhu Hongmin [Shanghai Jiao Tong University (China); Shanghai Key Laboratory of Advance Manufacturing Environment (China)

2010-05-21T23:59:59.000Z

325

DIMENSION STABILIZED FIXED PHOTOGRAPHIC TYPE EMULSION AND A METHOD FOR PRODUCING SAME  

DOE Patents (OSTI)

A process is given for stabilizing the dimensions of fixed gelatin-base photographic type emulsions containing silver halide, and particularly to such emulsions containing large amounts of silver chloride for use as nuclear track emulsions, so that the dimensions of the final product are the same as or in a predetermined fixed ratio to the dimensions of the emulsions prior to exposure. The process comprises contacting an exposed, fixed emulsion with a solution of wood rosin dissolved in ethyl alcohol for times corresponding to the dimensions desired, and thereafter permitting the alcohol to evaporate. (AEC)

Gilbert, F.C.

1962-03-13T23:59:59.000Z

326

Prolonging assembly through dissociation:A self assembly paradigm in microtubules  

E-Print Network (OSTI)

We study a one-dimensional model of microtubule assembly/disassembly in which GTP bound to tubulins within the microtubule undergoes stochastic hydrolysis. In contrast to models that only consider a cap of GTP-bound tubulin, stochastic hydrolysis allows GTP-bound tubulin remnants to exist within the microtubule. We find that these buried GTP remnants enable an alternative mechanism of recovery from shrinkage, and enhances fluctuations of filament lengths. Under conditions for which this alternative mechanism dominates, an increasing depolymerization rate leads to a decrease in dissociation rate and thus a net increase in assembly.

Sumedha; Michael F Hagan; Bulbul Chakraborty

2009-08-09T23:59:59.000Z

327

Quasi-Fixed Points and Periodic Orbits in the Zebiak—Cane ENSO Model with Applications in Kalman Filtering. Part I: Monthly Quasi-Fixed Points  

Science Conference Proceedings (OSTI)

In an effort to apply the interactive Kalman filter to higher-dimensional systems, the concept of a quasi-fixed point is introduced. This is defined to be a system state where the tendency, in a suitable reduced space, is at a minimum. It allows ...

Gerd Bürger; Stephen E. Zebiak; Mark A. Cane

1995-09-01T23:59:59.000Z

328

V-133: Microsoft pulls Patch Tuesday security fix | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3: Microsoft pulls Patch Tuesday security fix 3: Microsoft pulls Patch Tuesday security fix V-133: Microsoft pulls Patch Tuesday security fix April 14, 2013 - 6:00am Addthis PROBLEM: Microsoft pulls Patch Tuesday security fix PLATFORM: Windows XP Service Pack 3,Windows XP Professional x64 Edition Service Pack 2, Windows Server 2003 Service Pack 2, Windows Server 2003 x64 Edition Service Pack 2, Windows Server 2003 with SP2 for Itanium-based Systems,Windows Vista Service Pack 2, Windows Vista x64 Edition Service Pack 2, Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2, Windows Server 2008 for Itanium-based Systems Service Pack 2Windows 7 for 32-bit Systems, Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems, Windows

329

T-667: Red Hat Enterprise Linux kernel security and bug fix update |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7: Red Hat Enterprise Linux kernel security and bug fix update 7: Red Hat Enterprise Linux kernel security and bug fix update T-667: Red Hat Enterprise Linux kernel security and bug fix update July 13, 2011 - 7:24am Addthis PROBLEM: Red Hat Enterprise Linux kernel security and bug fix update PLATFORM: Vulnerable Linux Kernels; Red Hat Enterprise Linux Desktop (v. 6), Red Hat Enterprise Linux HPC Node (v. 6), Red Hat Enterprise Linux Server (v. 6), Red Hat Enterprise Linux Server EUS (v. 6.1.z), Red Hat Enterprise Linux Workstation (v. 6) ABSTRACT: It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into

330

T-712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement  

NLE Websites -- All DOE Office Websites (Extended Search)

712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and 712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement update T-712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement update September 8, 2011 - 10:30am Addthis PROBLEM: A flaw was discovered in Cumin where it would log broker authentication credentials to the Cumin log file. A vulnerability was reported in Red Hat Enterprise MRG Grid. A local user can access the broker password. PLATFORM: Red Hat Enterprise MRG v2 for Red Hat Enterprise Linux (version 5) ABSTRACT: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement update. reference LINKS: RHSA-2011:1249-1 SecurityTracker Alert ID: 1026021 CVE-2011-2925 IMPACT ASSESSMENT: Medium Discussion: A local user exploiting this flaw could connect to the broker outside of Cumin's control and perform certain operations such as scheduling jobs,

331

The d-bar approach to approximate inverse scattering at fixed energy in three dimensions  

E-Print Network (OSTI)

We develop the d-bar approach to inverse scattering at fixed energy in dimensions $d\\ge 3$ of [Beals, Coifman 1985] and [Henkin, Novikov 1987]. As a result we propose a stable method for nonlinear approximate finding a potential $v$ from its scattering amplitude $f$ at fixed energy $E>0$ in dimension $d=3$. In particular, in three dimensions we stably reconstruct n-times smooth potential $v$ with sufficient decay at infinity, $n>3$, from its scattering amplitude $f$ at fixed energy $E$ up to $O(E^{-(n-3-\\epsilon)/2})$ in the uniform norm as $E\\to +\\infty$ for any fixed arbitrary small $\\epsilon >0$ (that is with almost the same decay rate of the error for $E\\to +\\infty$ as in the linearized case near zero potential).

Roman Novikov

2005-05-10T23:59:59.000Z

332

[FIXED] perl 5.16.0 File::Glob() causes crashes  

NLE Websites -- All DOE Office Websites (Extended Search)

perl 5.16.0 File::Glob() causes crashes FIXED perl 5.16.0 File::Glob() causes crashes August 15, 2013 by Doug Jacobsen (1 Comments) There is an issue with the default modules...

333

COPOLAN: non-invasive occupancy profiling for preliminary assessment of HVAC fixed timing strategies  

Science Conference Proceedings (OSTI)

Nowadays, control of heating, cooling and ventilation equipment operation is mainly achieved via timers with fixed setback schedules, configured using experience and standard models of space occupancy. Applying generic timing strategies is however rarely ... Keywords: electricity, local area network, occupancy

Anthony Schoofs; Declan T. Delaney; Gregory M. P. O'Hare; Antonio G. Ruzzelli

2011-11-01T23:59:59.000Z

334

Suboptimal Schemes for Retrospective Data Assimilation Based on the Fixed-Lag Kalman Smoother  

Science Conference Proceedings (OSTI)

The fixed-lag Kalman smoother was proposed recently by S. E. Cohn et al. as a framework for providing retrospective data assimilation capability in atmospheric reanalysis projects. Retrospective data assimilation refers to the dynamically ...

R. Todling; S. E. Cohn; N. S. Sivakumaran

1998-08-01T23:59:59.000Z

335

Optimization of the Fixed Global Observing Network in a Simple Model  

Science Conference Proceedings (OSTI)

An exact closed form expression for the infinite time analysis and forecast error covariances of a Kalman filter is used to investigate how the locations of fixed observing platforms such as radiosonde stations affect global distributions of ...

Craig H. Bishop; Carolyn A. Reynolds; Michael K. Tippett

2003-06-01T23:59:59.000Z

336

Hyperbolic Orbits for Restricted Three-body Problems with Fixed Energy  

E-Print Network (OSTI)

The existence of hyperbolic orbits is proved for a class of restricted three-body problems with a fixed energy by taking limit for a sequence of periodic solutions which are obtained by variational methods.

Donglun Wu; Shiqing Zhang

2012-08-03T23:59:59.000Z

337

Structure and function of Frankia vesicles in dinitrogen fixing actinorhizal plants  

Science Conference Proceedings (OSTI)

Frankia, a filamentous bacterium which induces N{sub 2}-fixing root nodules on the roots of a wide range of woody dicotyledonous plants, is the first known actinomycete which fixes dinitrogen when growing in free-living culture. The nitrogenase enzyme is induced in many strains of this organism by withholding fixed nitrogen compounds from its nutrient medium. Our studies have concerned the physiology, biochemistry and structural development of the N{sub 2}-fixing apparatus in Frankia grown in vitro and in root nodules of host plants. Diverse strains of Frankia were isolated and cultured from different host plants and vesicle form and function were studied. Two strains were studied, HFPArI3, an isolate from nodules of the red alder Alnus rubra and HFPCcI3 isolated from root nodules of the tropical tree Casuarina cunninghamiana. The goal was to understand the structure and function which leads to optimum effectiveness for dinitrogen fixation. 13 refs.

Torrey, J.G.

1990-01-01T23:59:59.000Z

338

A quantitative evaluation of fixed-pattern noise reduction methods in imaging systems  

Science Conference Proceedings (OSTI)

Fixed-pattern noise is a common feature in several uncalibrated imaging systems, and it typically appears as striping and grid-like nonuniformity artifacts in hyperspectral and infrared cameras. In this work, we present a quantitative and comparative ...

Pablo Meza; César San Martin; Esteban Vera; Sergio Torres

2010-11-01T23:59:59.000Z

339

Breakout Group 2: Membrane Electrode Assemblies  

NLE Websites -- All DOE Office Websites (Extended Search)

January 23-24, 2008 January 23-24, 2008 Breakout Group 2: Membrane Electrode Assemblies PARTICIPANTS Name Organization Jim Goldbach Arkema, Inc. Kev Adjemian Nissan Motor Co. Eric Funkenbusch 3M John Kerr Lawrence Berkeley National Laboratory Jonathan Sharman Johnson Matthey Fuel Cells Jean St-Pierre University of South Carolina Huyen Dinh National Renewable Energy Laboratory Bryan Pivovar Los Alamos National Laboratory Jim Martin Lockheed Martin Sami Mardini Superprotonic Reg Tyler U.S. Department of Energy/Golden Field Office Craig Gittleman General Motors Don Gervasio Arizona State University Eric Shrader Palo Alto Research Center Robert Miller MTI Micro Kathi Epping (Facilitator) U.S. Department of Energy

340

Thermoelectric generator with hinged assembly for fins  

DOE Patents (OSTI)

A cylindrical casing has a central shielded capsule of radioisotope fuel. A plurality of thermonuclear modules are axially arranged with their hot junctions resiliently pressed toward the shield and with their cold junctions adjacent a transition member having fins radiating heat to the environment. For each module, the assembly of transition member and fins is hinged to the casing for swinging to permit access to and removal of such module. A ceramic plate having gold layers on opposite faces prevents diffusion bonding of the hot junction to the shield.

Purdy, David L. (Indiana, PA); Shapiro, Zalman M. (Pittsburgh, PA); Hursen, Thomas F. (Pittsburgh, PA); Maurer, Gerould W. (Apollo, PA)

1976-11-02T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Self-Assembly of Organic Nanostructures  

E-Print Network (OSTI)

This dissertation focuses on investigating the morphologies, optical and photoluminescence properties of porphyrin nanostructures prepared by the self-assembly method. The study is divided into three main parts. In the first part, a large variety of porphyrin nanostructures, including nanoplates, nanofibers, nanoparticles and nanowires, were obtained through direct acidification of tetra(p-carboxyphenyl)porphyrin (TCPP) in aqueous solution. Protonation of the carboxylate groups of TCPP resulted in the formation of nanoplates through the J-aggregation of the porphyrin. Further protonating the core nitrogens of TCPP formed the porphyrin diacids which organized into well-defined structures through their interactions with counter-anions in the solution. The structures of the resulting assemblies were found to be counterion dependent. In the second part of this work, we explored the optical memory effect of the porphyrin thin film. We found that the morphology and the emission of the porpyrin thin film on Si can be changed by varying the pH of its surrounding solution. The changing in morphology and light emission of the thin film resulted from the protonation or deprotonation of TCPP'S core nitrogens. By selectively deprotonating the TCPP dications in a confined region utilizing the water meniscus between an AFM tip and the surface, Fluorescence patterns can be generated on the thin film. The fluorescence patterns can be easily erased by re-protonating the porphyrin. In the third part of this study, porphynoid nanoparticles were deposited on a surface energy gradient, and then characterized by AFM in order to investigate how the surface energy influences thier morphologies. The surface energy gradient was prepared by selectively oxidizing a self-assembly monolayer of octadecyltrichlorosilane (OTS) by UV-ozone. The nanoparticles disassemble into smaller nanoparticles with narrower size distribution on the surface with higher surface energy. Lastly, we engaged in characterizing the morphologies of polymer nanocomposites prepared by layer-by-layer assembly for wettability control. The surface roughness of the nanocopmosite in air and in salt solutions was also measured to study the correlation between the wettability of the polymer surface and its surface roughness.

Wan, Albert

2011-08-01T23:59:59.000Z

342

Spacer grid assembly and locking mechanism  

DOE Patents (OSTI)

A spacer grid assembly is disclosed for retaining a plurality of fuel rods in substantially parallel spaced relation, the spacer grids being formed with rhombic openings defining contact means for engaging from one to four fuel rods arranged in each opening, the spacer grids being of symmetric configuration with their rhombic openings being asymmetrically offset to permit inversion and relative rotation of the similar spacer grids for improved support of the fuel rods. An improved locking mechanism includes tie bars having chordal surfaces to facilitate their installation in slotted circular openings of the spacer grids, the tie rods being rotatable into locking engagement with the slotted openings.

Snyder, Jr., Harold J. (Rancho Santa Fe, CA); Veca, Anthony R. (San Diego, CA); Donck, Harry A. (San Diego, CA)

1982-01-01T23:59:59.000Z

343

Haptic Seat for Fuel Ecomony  

and fuel consumption.  The majority of the current systems are visual providing data on an already crowded instrument cluster.  In order to realize ...

344

Reactor Core Assembly - HFIR Technical Parameters | ORNL Neutron Sciences  

NLE Websites -- All DOE Office Websites (Extended Search)

Home › Facilities › HFIR › Reactor Core Assembly Home › Facilities › HFIR › Reactor Core Assembly Reactor Core Assembly The reactor core assembly is contained in an 8-ft (2.44-m)-diameter pressure vessel located in a pool of water. The top of the pressure vessel is 17 ft (5.18 m) below the pool surface, and the reactor horizontal mid-plane is 27.5 ft (8.38 m) below the pool surface. The control plate drive mechanisms are located in a subpile room beneath the pressure vessel. These features provide the necessary shielding for working above the reactor core and greatly facilitate access to the pressure vessel, core, and reflector regions. In-core irradiation and experiment locations (cross section at horizontal midplane) Reactor core assembly Reactor core assembly: (1) in-core irradiation and experiment locations,

345

Method and apparatus for assembling permanent magnet rotors  

DOE Patents (OSTI)

A permanent magnet assembly for assembly in large permanent magnet motors and generators includes a two-piece carrier that can be slid into a slot in the rotor and then secured in place using a set screw. The invention also provides an auxiliary carrier device with guide rails that line up with the teeth of the rotor, so that a permanent magnet assembly can be pushed first into a slot, and then down the slot to its proper location. An auxiliary tool is provided to move the permanent magnet assembly into position in the slot before it is secured in place. Methods of assembling and disassembling the magnet assemblies in the rotor are also disclosed. 2 figs.

Hsu, J.S.; Adams, D.J.

1999-06-22T23:59:59.000Z

346

A facility to remotely assemble radioisotope thermoelectric generators  

DOE Green Energy (OSTI)

Radioisotope Thermoelectric Generators (RTGs) are electrical power sources that use heat from decaying radioisotopes to directly generate electrical power. The RTG assembly process is performed in an inert atmosphere inside a large glovebox, which is surrounded by radiation shielding to reduce exposure to neutron and gamma radiation from the radioisotope heat source. In the past, allowable dose rate limits have allowed direct, manual assembly methods; however, current dose rate limits require a thicker radiation shielding that makes direct, manual assembly infeasible. To minimize RTG assembly process modifications, telerobotic systems are being investigated to perform remote assembly tasks. Telerobotic systems duplicate human arm motion and incorporate force feedback sensitivity to handle objects and tools in a human-like manner. A telerobotic system with two arms and a three-dimensional (3-D) vision system can be used to perform remote RTG assembly tasks inside gloveboxes and cells using unmodified, normal hand tools.

Engstrom, J.W.; Goldmann, L.H.; Truitt, R.W.

1992-07-01T23:59:59.000Z

347

Default assembly of early adenovirus chromatin  

SciTech Connect

In adenovirus particles, the viral nucleoprotein is organized into a highly compacted core structure. Upon delivery to the nucleus, the viral nucleoprotein is very likely to be remodeled to a form accessible to the transcription and replication machinery. Viral protein VII binds to intra-nuclear viral DNA, as do at least two cellular proteins, SET/TAF-I{beta} and pp32, components of a chromatin assembly complex that is implicated in template remodeling. We showed previously that viral DNA-protein complexes released from infecting particles were sensitive to shearing after cross-linking with formaldehyde, presumably after transport of the genome into the nucleus. We report here the application of equilibrium-density gradient centrifugation to the analysis of the fate of these complexes. Most of the incoming protein VII was recovered in a form that was not cross-linked to viral DNA. This release of protein VII, as well as the binding of SET/TAF-I{beta} and cellular transcription factors to the viral chromatin, did not require de novo viral gene expression. The distinct density profiles of viral DNA complexes containing protein VII, compared to those containing SET/TAF-I{beta} or transcription factors, were consistent with the notion that the assembly of early viral chromatin requires both the association of SET/TAF-1{beta} and the release of protein VII.

Spector, David J. [Department of Microbiology and Immunology, Intercollege Graduate Degree Program in Genetics, and Cellular and Molecular Biology Program, Pennsylvania State University College of Medicine, Hershey, PA 17033 (United States)]. E-mail: dspector@psu.edu

2007-03-01T23:59:59.000Z

348

Ceramic-to-metal stator vane assembly with braze  

SciTech Connect

A stator vane assembly for a gas turbine engine that includes a plurality of circumferentially spaced ceramic vanes, each of which has an inner and outer ceramic shroud, and a ceramic post extending from one of the shrouds, and a metallic platform having a plurality of circumferentially spaced recesses. The posts are inserted into a metallic sleeve and then brazed. The brazed sleeves are then mounted in the recesses. A method for assembling these components to form the stator assembly is also described.

Chase, Donna J. (Scottsdale, AZ); Fang, Ho T. (Scottsdale, AZ); Irwin, Craig W. (Tempe, AZ); Schienle, James L. (Phoenix, AZ)

1995-01-01T23:59:59.000Z

349

Microfluidic device for the assembly and transport of microparticles  

DOE Patents (OSTI)

A microfluidic device comprising independently addressable arrays of interdigitated electrodes can be used to assembly and transport large-scale microparticle structures. The device and method uses collective phenomena in a negatively polarized suspension exposed to a high-gradient strong ac electric field to assemble the particles into predetermined locations and then transport them collectively to a work area for final assembly by sequentially energizing the electrode arrays.

James, Conrad D. (Albuquerque, NM); Kumar, Anil (Framingham, MA); Khusid, Boris (New Providence, NJ); Acrivos, Andreas (Stanford, CA)

2010-06-29T23:59:59.000Z

350

Nuclear Fuel Assembly and Related Methods for Spent Nuclear ...  

Nuclear Fuel Assembly and Related Methods for Spent Nuclear Fuel Reprocessing and Management Note: The technology described above is an early stage ...

351

Optical systems fabricated by printing-based assembly - Energy ...  

Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the ...

352

Snubber Assembly for Turbine Blades - Energy Innovation Portal  

Wind Energy; Partners (27) Visual Patent Search; Success Stories; News; Events; Snubber Assembly for Turbine Blades United States Patent Application *** PATENT ...

353

Electrical machines and assemblies including a yokeless stator ...  

Wind Energy; Partners (27) Visual Patent Search; Success Stories; News; Events; Electrical machines and assemblies including a yokeless stator with modular lamination ...

354

Nanocrystals-Related Synthesis, Assembly, and Energy Applications  

Science Conference Proceedings (OSTI)

This is an editorial article for a Journal of Nanomaterials special issue titled "Nanocrystals-Related Synthesis, Assembly, and Energy Applications".

Dai, Quanqin [ORNL; Hu, Michael Z. [ORNL

2011-01-01T23:59:59.000Z

355

Silicon-Germanium-Carbon Self Assembled Quantum Dot Growth ...  

Science Conference Proceedings (OSTI)

Feb 1, 2002 ... Silicon-Germanium-Carbon Self Assembled Quantum Dot Growth and Applications in Electronic Memory Devices by D.-W. Kim and S.

356

Control rod assembly for liquid metal fast breeder reactors  

SciTech Connect

This standard establishes the requirements for fabrication, testing, and inspection of control rod assemblies for use in liquid metal fast breeder reactors.

1978-09-08T23:59:59.000Z

357

Engineered biomolecular interactions with inorganic materials : sequence, binding, and assembly  

E-Print Network (OSTI)

Nanobiotechnology aims to exploit biomolecular recognition and self-assembly capabilities for integrating advanced materials into medicine and electronics. In particular, peptides have exhibited the ability to specifically ...

Peelle, Beau R

2005-01-01T23:59:59.000Z

358

Assembly Manual for the Berkeley Lab Cosmic Ray Detector  

E-Print Network (OSTI)

Laboratory Fellowship. This manual is a revised and expandedillustration. Instruction Manual Figure 3: Lucite cookies (effectiveness. Assembly Manual Figure 6: Scintillator end

Collier, Michael

2002-01-01T23:59:59.000Z

359

Assembly of a Molecular Needle, from the Bottom Up  

NLE Websites -- All DOE Office Websites (Extended Search)

Assembly of a Molecular Needle, from the Bottom Up Print Many pathogenic bacteria use a specialized secretion system to inject virulence proteins directly into the cells they...

360

Stepwise Surface Assembly of Quantum Dot-Fullerene ...  

This stepwise surface assembly procedure results in high quality quantum dot-fullerene dimers with controllable linker length and a high yield of ...

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Fast Generation of Potentials for Self Assembly of Particles Abstract  

E-Print Network (OSTI)

assembly of cells to form tissue, organs, and ultimately organisms, ..... cell template). ...... [21] A. Greer, Condensed matter - Too hot to melt, Nature, 404(

362

Hydromechanical transmission with three simple planetary assemblies, one sun gear being mounted on the output shaft and the other two on a common shaft connected to an input-driven hydraulic module  

DOE Patents (OSTI)

A power transmission having three simple planetary assemblies, each having its own carrier and its own planet, sun, and ring gears. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the sun gears of the first two planetary assemblies, these two sun gears being connected together on a common shaft. The speed-varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being connected in driving relation to the input shaft, the other unit, which may have a fixed stroke, being connected in driving relation to the sun gears. The input shaft is also connected to drive the second ring gear and, furthermore is clutchable to the carrier of the third planetary assembly. A brake grounds the first carrier in the first range and in reverse and causes drive to be delivered to the output through the first ring gear in a hydrostatic mode. The carrier of the second planetary assembly drives the ring gear of the third planetary assembly, which is clutchable to the output shaft, and the sun gear of the third planetary assembly is mounted rigidly to the output shaft.

Orshansky, Jr., deceased, Elias (LATE OF San Francisco, CA); Weseloh, William E. (San Diego, CA)

1978-01-01T23:59:59.000Z

363

Fiber optical assembly for fluorescence spectrometry  

DOE Patents (OSTI)

A system for analyzing a sample for the presence of an analyte in a sample. The system includes a sample holder for containing the sample; an excitation source, such as a laser, and at least one linear array radially disposed about the sample holder. Radiation from the excitation source is directed to the sample, and the radiation induces fluorescent light in the sample. Each linear array includes a plurality of fused silica optical fibers that receive the fluorescent light and transmits a fluorescent light signal from the first end to an optical end port of the linear array. An end port assembly having a photo-detector is optically coupled to the optical end port. The photo-detector detects the fluorescent light signal and converts the fluorescent light signal into an electrical signal.

Carpenter, II, Robert W. (Pagosa Springs, CO); Rubenstein, Richard (Staten Island, NY); Piltch, Martin (Los Alamos, NM); Gray, Perry (Los Alamos, NM)

2010-12-07T23:59:59.000Z

364

Power module assemblies with staggered coolant channels  

DOE Patents (OSTI)

A manifold is provided for supporting a power module assembly with a plurality of power modules. The manifold includes a first manifold section. The first face of the first manifold section is configured to receive the first power module, and the second face of the first manifold section defines a first cavity with a first baseplate thermally coupled to the first power module. The first face of the second manifold section is configured to receive the second power module, and the second face of the second manifold section defines a second cavity with a second baseplate thermally coupled to the second power module. The second face of the first manifold section and the second face of the second manifold section are coupled together such that the first cavity and the second cavity form a coolant channel. The first cavity is at least partially staggered with respect to second cavity.

Herron, Nicholas Hayden; Mann, Brooks S; Korich, Mark D

2013-07-16T23:59:59.000Z

365

Nuclear reactor shutdown control rod assembly  

DOE Patents (OSTI)

A temperature responsive, self-actuated nuclear reactor shutdown control rod assembly 10. The upper end 18 of a lower drive line 17 fits within the lower end of an upper drive line 12. The lower end (not shown) of the lower drive line 17 is connected to a neutron absorber. During normal temperature conditions the lower drive line 17 is supported by detent means 22,26. When an overtemperature condition occurs thermal actuation means 34 urges ring 26 upwardly sufficiently to allow balls 22 to move radially outwardly thereby allowing lower drive line 17 to move downwardly toward the core of the nuclear reactor resulting in automatic reduction of the reactor powder.

Bilibin, Konstantin (North Hollywood, CA)

1988-01-01T23:59:59.000Z

366

Reactivity control assembly for nuclear reactor. [LMFBR  

DOE Patents (OSTI)

This invention, which resulted from a contact with the United States Department of Energy, relates to a control mechanism for a nuclear reactor and, more particularly, to an assembly for selectively shifting different numbers of reactivity modifying rods into and out of the core of a nuclear reactor. It has been proposed heretofore to control the reactivity of a breeder reactor by varying the depth of insertion of control rods (e.g., rods containing a fertile material such as ThO/sub 2/) in the core of the reactor, thereby varying the amount of neutron-thermalizing coolant and the amount of neutron-capturing material in the core. This invention relates to a mechanism which can advantageously be used in this type of reactor control system.

Bollinger, L.R.

1982-03-17T23:59:59.000Z

367

Rotatable seal assembly. [Patent application; rotating targets  

DOE Patents (OSTI)

An assembly is provided for rotatably supporting a rotor on a stator so that vacuum chambers in the rotor and stator remain in communication while the chambers are sealed from ambient air, which enables the use of a ball bearing or the like to support most of the weight of the rotor. The apparatus includes a seal device mounted on the rotor to rotate therewith, but shiftable in position on the rotor while being sealed to the rotor as by an O-ring. The seal device has a flat face that is biased towards a flat face on the stator, and pressurized air is pumped between the faces to prevent contact between them while spacing them a small distance apart to avoid the inflow of large amounts of air between the faces and into the vacuum chambers.

Logan, C.M.; Garibaldi, J.L.

1980-11-12T23:59:59.000Z

368

Mechanical connection for a tubular assembly  

DOE Patents (OSTI)

Disclosed is a mechanical connection assembly for connecting two telescopically related parts together in a fluidtight relation. The system uses snap-in fasteners having flexible barbed tangs which are snapped into receiving holes formed in the parts being attached together. A locking pin can be inserted into a central aperture through the snap-in fastener to secure the fastener in the receiving holes. The system also includes a seal having sealing surfaces at least one of which is formed at an angle inclined relative to a true vertical. a metallic sealing element is interposed between the sealing surfaces. The geometry of the sealing surfaces is capable of compensating for the differential thermal growth rates occurring when the two parts are made from dissimilar metals.

Grover, J.M.

1984-09-12T23:59:59.000Z

369

Programmed assembly of nanoscale structures using peptoids.  

Science Conference Proceedings (OSTI)

Sequence-specific polymers are the basis of the most promising approaches to bottom-up programmed assembly of nanoscale materials. Examples include artificial peptides and nucleic acids. Another class is oligo(N-functional glycine)s, also known as peptoids, which permit greater sidegroup diversity and conformational control, and can be easier to synthesize and purify. We have developed a set of peptoids that can be used to make inorganic nanoparticles more compatible with biological sequence-specific polymers so that they can be incorporated into nucleic acid or other biologically based nanostructures. Peptoids offer degrees of modularity, versatility, and predictability that equal or exceed other sequence-specific polymers, allowing for rational design of oligomers for a specific purpose. This degree of control will be essential to the development of arbitrarily designed nanoscale structures.

Ren, Jianhua (University of the Pacific, Stockton, CA); Russell, Scott (California State University, Stanislaus, Turlock, CA); Morishetti, Kiran (University of the Pacific, Stockton, CA); Robinson, David B.; Zuckermann, Ronald N. (Lawrence Berkeley National Laboratory, Berkeley, CA); Buffleben, George M.; Hjelm, Rex P. (Los Alamos National Laboratory, Los Alamos, NM); Kent, Michael Stuart (Sandia National Laboratories, Albuquerque, NM)

2011-02-01T23:59:59.000Z

370

Assembly for testing weldability of sheet metal  

DOE Patents (OSTI)

A test assembly for determining the weldability of sheet metal includes (1) a base having a flat side surface with an annular groove in the side surface, a counterbore being formed in the outer wall of the groove and the surface portion of the base circumscribed by the inner wall of the groove being substantially coplanar with the bottom of the counterbore, (2) a test disk of sheet metal the periphery of which is positioned in the counterbore and the outer surface of which is coplanar with one side of the base, and (3) a clamp ring overlying the side surface of the base and the edge portion of the test disk and a plurality of clamp screws which extend through the clamp ring for holding the periphery of the test disk against the bottom of the counterbore.

David, Stan A. (Knoxville, TN); Woodhouse, John J. (Crossville, TN)

1985-01-01T23:59:59.000Z

371

Portable type solar heat cooker assembly  

SciTech Connect

A portable type solar heat cooker assembly including a cooking glass tube comprising an outer bottomed glass tube and an inner bottomed glass tube coated with a selective absorption film showing a high absorptivity in the solar radiation spectrum zone and a low absorptivity in the heat radiation spectrum zone. The inner tube is coaxially inserted into the outer tube and hermetically sealed together at their open ends, with a space therebetween being evacuated to vacuum. A case is provided to open on hinges and to receive the cooking glass tube at its central portion. A curved reflector is bisymmetrically provided on the case, which forms a reflex mirror for the solar rays when the case is opened. A tiltable stand attached to the outside of the case is provided to support the case in an inclined state.

Takeuchi, H.; Mikiya, T.

1984-04-17T23:59:59.000Z

372

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products. 5 figs.

Cantor, C.R.; Niemeyer, C.M.; Smith, C.L.; Sano, Takeshi; Hnatowich, D.J.; Rusckowski, M.

1996-10-01T23:59:59.000Z

373

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1996-01-01T23:59:59.000Z

374

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1999-10-12T23:59:59.000Z

375

Spontaneous motion in hierarchically assembled active matter  

E-Print Network (OSTI)

With exquisite precision and reproducibility, cells orchestrate the cooperative action of thousands of nanometer-sized molecular motors to carry out mechanical tasks at much larger length scales, such as cell motility, division and replication. Besides their biological importance, such inherently non-equilibrium processes are an inspiration for developing biomimetic active materials from microscopic components that consume energy to generate continuous motion. Being actively driven, these materials are not constrained by the laws of equilibrium statistical mechanics and can thus exhibit highly sought-after properties such as autonomous motility, internally generated flows and self-organized beating. Starting from extensile microtubule bundles, we hierarchically assemble active analogs of conventional polymer gels, liquid crystals and emulsions. At high enough concentration, microtubules form a percolating active network characterized by internally driven chaotic flows, hydrodynamic instabilities, enhanced transport and fluid mixing. When confined to emulsion droplets, 3D networks spontaneously adsorb onto the droplet surfaces to produce highly active 2D nematic liquid crystals whose streaming flows are controlled by internally generated fractures and self-healing, as well as unbinding and annihilation of oppositely charged disclination defects. The resulting active emulsions exhibit unexpected properties, such as autonomous motility, which are not observed in their passive analogues. Taken together, these observations exemplify how assemblages of animate microscopic objects exhibit collective biomimetic properties that are starkly different from those found in materials assembled from inanimate building blocks, challenging us to develop a theoretical framework that would allow for a systematic engineering of their far-from-equilibrium material properties.

Tim Sanchez; Daniel T. N. Chen; Stephen J. DeCamp; Michael Heymann; Zvonimir Dogic

2013-01-07T23:59:59.000Z

376

Generation of robotic assembly sequences with consideration of line balancing using simulated annealing  

Science Conference Proceedings (OSTI)

An assembly sequence is considered to be optimal when the sequence satisfies assembly constraints and yields the minimum assembly cost. While, a line balancing solution is considered to be optimal when the solution has the minimum idle time of the line, ... Keywords: Assembly line balancing, Assembly sequence, Optimization, Simulated annealing

D. S. Hong; H. S. Cho

1997-11-01T23:59:59.000Z

377

Combustor assembly for use in a turbine engine and methods of assembling same  

SciTech Connect

A fuel nozzle assembly for use with a turbine engine is described herein. The fuel nozzle assembly includes a plurality of fuel nozzles positioned within an air plenum defined by a casing. Each of the plurality of fuel nozzles is coupled to a combustion liner defining a combustion chamber. Each of the plurality of fuel nozzles includes a housing that includes an inner surface that defines a cooling fluid plenum and a fuel plenum therein, and a plurality of mixing tubes extending through the housing. Each of the mixing tubes includes an inner surface defining a flow channel extending between the air plenum and the combustion chamber. At least one mixing tube of the plurality of mixing tubes including at least one cooling fluid aperture for channeling a flow of cooling fluid from the cooling fluid plenum to the flow channel.

Uhm, Jong Ho; Johnson, Thomas Edward

2013-05-14T23:59:59.000Z

378

Scintillator assembly for alpha radiation detection and method of making the assembly  

DOE Patents (OSTI)

A scintillator assembly for use in the detection of alpha radiation includes a body of optically-transparent epoxy and an amount of phosphor particles embedded within the body adjacent one surface thereof. When making the body, the phosphor particles are mixed with the epoxy when in an uncured condition and permitted to settle to the bottom surface of a mold within which the epoxy/phosphor mixture is contained. When the mixture subsequently cures to form a hardened body, the one surface of the body which cured against the bottom surface of the mold is coated with a thin layer of opaque material for preventing ambient light form entering the body through the one surface. The layer of opaque material is thereafter coated with a layer of protective material to provide the assembly with a damage-resistant entrance window. 6 figs.

McElhaney, S.A.; Bauer, M.L.; Chiles, M.M.

1992-09-22T23:59:59.000Z

379

Automatic coolant flow control device for a nuclear reactor assembly  

DOE Patents (OSTI)

A device which controls coolant flow through a nuclear reactor assembly comprises a baffle means at the exit end of said assembly having a plurality of orifices, and a bimetallic member in operative relation to the baffle means such that at increased temperatures said bimetallic member deforms to unblock some of said orifices and allow increased coolant flow therethrough.

Hutter, Ernest (Wilmette, IL)

1986-01-01T23:59:59.000Z

380

FAssem: FPGA Based Acceleration of De Novo Genome Assembly  

Science Conference Proceedings (OSTI)

Next generation sequencing technologies produce large amounts of data at very low cost. They produce short reads of DNA fragments. These fragments have many overlaps, lots of repeats and may also include sequencing errors. The assembly process involves ... Keywords: FPGA, Acceleration, Next Generation Sequencing Assembly, Bioinformatics

B. Sharat Chandra Varma, Kolin Paul, M. Balakrishnan, Dominique Lavenier

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Automatic coolant flow control device for a nuclear reactor assembly  

DOE Patents (OSTI)

A device which controls coolant flow through a nuclear reactor assembly comprises a baffle means at the exit end of said assembly having a plurality of orifices, and a bimetallic member in operative relation to the baffle means such that at increased temperatures said bimetallic member deforms to unblock some of said orifices and allow increased coolant flow therethrough.

Hutter, E.

1984-01-27T23:59:59.000Z

382

Multi-objective fuzzy assembly line balancing using genetic algorithms  

Science Conference Proceedings (OSTI)

This paper presents a fuzzy extension of the simple assembly line balancing problem of type 2 (SALBP-2) with fuzzy job processing times since uncertainty, variability, and imprecision are often occurred in real-world production systems. The jobs processing ... Keywords: Assembly line balancing, Fuzzy logic, Fuzzy numbers, Genetic algorithms, Multi-objective optimization

P. Th. Zacharia; Andreas C. Nearchou

2012-06-01T23:59:59.000Z

383

Filter holder and gasket assembly for candle or tube filters  

DOE Patents (OSTI)

A filter holder and gasket assembly for holding a candle filter element within a hot gas cleanup system pressure vessel. The filter holder and gasket assembly includes a filter housing, an annular spacer ring securely attached within the filter housing, a gasket sock, a top gasket, a middle gasket and a cast nut.

Lippert, Thomas Edwin (Murrysville, PA); Alvin, Mary Anne (Pittsburgh, PA); Bruck, Gerald Joseph (Murrysville, PA); Smeltzer, Eugene E. (Export, PA)

1999-03-02T23:59:59.000Z

384

Molecular rectifying diodes from self-assembly on silicon  

E-Print Network (OSTI)

Molecular rectifying diodes from self-assembly on silicon Stéphane Lenfant , Christophe Krzeminski a molecular rectifying junction made from a sequential self-assembly on silicon. The device structure consists resonance through the highest occupied molecular orbital of the -group in good agreement with our

Paris-Sud XI, Université de

385

Separator assembly for use in spent nuclear fuel shipping cask  

DOE Patents (OSTI)

A separator assembly for use in a spent nuclear fuel shipping cask has a honeycomb-type wall structure defining parallel cavities for holding nuclear fuel assemblies. Tubes formed of an effective neutron-absorbing material are embedded in the wall structure around each of the cavities and provide neutron flux traps when filled with water.

Bucholz, James A. (Oak Ridge, TN)

1983-01-01T23:59:59.000Z

386

Development and fabrication of solar-collector SMC reflector assemblies  

SciTech Connect

This project produced a parabolic trough solar collector array consisting of four each 2 x 6 m reflector modules. Each module required a structural torque tube on which were mounted six 1 x 2 m molded sheet molding compound (SMC)/glass panels. The project reported here established the fabrication, assembly, and inspection procedures for production of SMC reflector panels and assemblies.

Kirsch, P.A.

1982-12-01T23:59:59.000Z

387

Argonne CNM Highlight: Nanomechanical Resonator Self-Assembled from  

NLE Websites -- All DOE Office Websites (Extended Search)

Nanomechanical Resonator Self-Assembled from Nanoparticles Nanomechanical Resonator Self-Assembled from Nanoparticles thermal motion of self-assembled membranes Power spectral distribution of the thermal motion of membranes self-assembled from gold nanoparticles taken at the center (black) and halfway along the radius (red) in air; inset shows TEM images of the membranes Membrane motion under mechanical excitation Phase-sensitive image of one mode of membrane motion under mechanical excitation. The self-assembly of nanoscale structures from functional nanoparticles has provided a powerful path to developing devices with emergent properties from the bottom up. Users from the University of Chicago, together with researchers from the University of Melbourne and CNM's Electronic & Magnetic Materials & Devices Group, demonstrate that free-standing sheets

388

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

389

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

390

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

391

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

392

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

393

Photocurrent Generation in Layer-By-Layer Assembled Dendrimers  

NLE Websites -- All DOE Office Websites (Extended Search)

Photocurrent Generation in Layer-By-Layer Assembled Dendrimers with Photocurrent Generation in Layer-By-Layer Assembled Dendrimers with Ruthenium Tris-bipyridine Peripheral Groups and a Viologen-like Core Manal Abi Saab, Rouba Abdel-Malak, James F. Wishart, and Tarek H. Ghaddar Langmuir 23, 10807-10815 (2007). [Find paper at ACS Publications] Abstract: The photophysical and photoelectrochemical properties of first- and second-generation dendrimers with ruthenium tris-bipyridine peripheral groups and a tri-viologen like core (Ru3V3 and Ru6V3) were investigated in solution and when embedded within assembled films. The stepwise assembly of these dendrimers on quartz and ITO surfaces utilizing the layer-by-layer approach was investigated. The amount of the assembled dendrimers was found to increase on going to the higher generation dendrimer. This dendrimer

394

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

395

Tubulin assembly is disordered in a hypogeomagnetic field  

Science Conference Proceedings (OSTI)

Although the effect of a magnetic field on functions of many proteins has been reported, tubulin assembly in a hypogeomagnetic field (HGMF) has not yet been characterized. Here, we show disorder in tubulin self-assembly in an HGMF. Absorbance at 350 nm, commonly used to monitor tubulin self-assembly, was altered in the HGMF, providing evidence for the effects of HGMF on tubulin. Measurements of intrinsic fluorescence (335 nm) also revealed a disordered change in tubulin conformation during assembly in the HGMF. Under the same conditions, microtubule-like filaments were not observed by electron microscopy, with the exception of amorphous oligomers. Incubation of tubulin with tau in the natural geomagnetic field (GMF) yielded microtubule-like filaments, while only amorphous oligomers were observed following the incubation in the HGMF. This distinction suggests that tubulin assembly depends upon the GMF, and that elimination of the GMF induces disorder in tubulin organization.

Wang Dongliang [State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 (China); Graduate University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049 (China); Wang Xingsheng [State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 (China); Xiao Rong [State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 (China); Graduate University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049 (China); Liu Ying [State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 (China); He Rongqiao [State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 (China); Graduate University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049 (China)], E-mail: herq@sun5.ibp.ac.cn

2008-11-14T23:59:59.000Z

396

Archimedes: A system that plans and executes mechanical assemblies  

Science Conference Proceedings (OSTI)

Archimedes is a prototype mechanical assembly system which generates and executes robot assembly programs from a CAD model input. The system addresses the unrealized potential for flexibility in robotic mechanical assembly applications by automating the programming task. Input is a solid model of the finished assembly. Parts relationships and geometric constraints are deduced from the solid model. A rule-based planner generates a generic'' assembly plan that satisfies the geometric constraints, as well as other constraints embodied in the rules. A retargetable plan compiler converts the generic plan into code specific to an application environment. Execution of the compiled plan in a workcell containing an Adept Two robot, a vision system, and other parts handling equipment will be shown on videotape.

Strip, D.

1990-01-01T23:59:59.000Z

397

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

398

Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Plant,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Plant, Tennessee and Hanford Site, Richland, Washington Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Plant, Tennessee and Hanford Site, Richland, Washington SUMMARY This EA evaluates the environmental impacts associated with the U.S. Department of Energy proposed action to conduct a lead test assembly program to confirm the viability of using a commercial light water reactor to produce tritium. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD July 22, 1997 EA-1210: Finding of No Significant Impact Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Plant, Tennessee and Hanford Site, Richland, Washington July 22, 1997 EA-1210: Final Environmental Assessment

399

MHK Technologies/LIMPET OWC fixed Near shore OWC | Open Energy Information  

Open Energy Info (EERE)

LIMPET OWC fixed Near shore OWC LIMPET OWC fixed Near shore OWC < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage LIMPET OWC fixed Near shore OWC.jpg Technology Profile Primary Organization Voith Hydro Wavegen Limited Project(s) where this technology is utilized *MHK Projects/Siadar Technology Resource Click here Wave Technology Type Click here Oscillating Water Column Technology Readiness Level Click here TRL 7/8: Open Water System Testing & Demonstration & Operation Technology Description Limpet (Land Installed Marine Powered Energy Transformer) is a shoreline energy converter sited on the island of Islay, off Scotland's west coast. The current Limpet device - Limpet 500 - was installed in 2000 and produces power for the national grid. Limpet uses the principle of an oscillating water column.

400

Ontology-based modeling and integration of morphological characteristics of assembly joints for network-based collaborative assembly design  

Science Conference Proceedings (OSTI)

This paper presents our research on developing an ontology-based framework that can represent morphological characteristics related to assembly joints. Joints within the physical structure of an assembly are inevitable because of the limitations of component ... Keywords: Collaborative Product Design, Mereotopology, Morphological Characteristics, Ontology, Semantic Web Rule Language

Kyoung-yun Kim; Seongah Chin; Ohbyung Kwon; R. darin Ellis

2009-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

BBF RFC 36: Fusion protein BioBrick assembly standard with optional linker extension  

E-Print Network (OSTI)

This RFC 36 describes an extension of the original BioBrick assembly standard (BBF RFC 10) and Freiburg assembly standard (BBF RFC 25). The Fusion Assembly strategy described here is fully compatible with RFC 25 (Freiburg) ...

Jerala, Roman

2009-09-01T23:59:59.000Z

402

A Parallel Euler Approach for Large-Scale Biological Sequence Assembly  

Science Conference Proceedings (OSTI)

Biological sequence assembly is an essential step for sequencing the genomes of organisms. Sequence assembly is very computing intensive especially for the large-scale sequence assembly. Parallel computing is an effective way to reduce the computing ...

2005-07-01T23:59:59.000Z

403

2.875 Mechanical Assembly and Its Role in Product Development, Fall 2002  

E-Print Network (OSTI)

Introduces mechanical and economic models of assemblies and assembly automation on two levels. "Assembly in the small" comprises basic engineering models of rigid and compliant part mating and explains the operation of the ...

Whitney, Daniel E.

404

Nanostructured gene and drug delivery systems based on molecular self-assembly  

E-Print Network (OSTI)

Molecular self-assembly describes the assembly of molecular components into complex, supramolecular structures governed by weak, non-covalent interactions. In recent years, molecular self-assembly has been used extensively ...

Wood, Kris Cameron

2007-01-01T23:59:59.000Z

405

Can-out hatch assembly with magnetic retention means  

SciTech Connect

A can-out hatch assembly may be positioned in sealed engagement about an aperture within a chamber and is adapted to engage a cover on a container positioned over the aperture to allow the transfer of a contaminant from the chamber to the container while maintaining the contaminant as well as internal portions of the chamber and container isolated from the surrounding environment. With the container's cover engaged by the can-out hatch assembly, the hatch assembly as well as the cover may be pivotally displaced from the aperture with the cover maintaining the exterior portion of the hatch assembly isolated from the contaminant. After the contaminant is transferred from the chamber to the container, the hatch assembly and cover are again positioned in sealed engagement about the aperture. The hatch assembly then positions the cover upon the open end of the container in a sealed manner allowing the container to be removed while maintaining the chamber sealed relative to the surrounding environment. The can-out hatch assembly is particularly adapted for operation by remote control means within the sealed chamber.

Frank, Robert C. (Crestwood, IL); Hoh, Joseph C. (Naperville, IL)

1986-01-01T23:59:59.000Z

406

Rigid laser mirror mount and protection assembly  

SciTech Connect

A mounting assembly for supporting a Brewster window and mirror to intercept a laser beam at the end of a gas laser envelope includes an elongated tubular member having one end opening into the gas laser envelope and an opposite end closed by the Brewster window. A rigid housing supporting the mirror is joined to the tubular member close to the end having the Brewster window by a flexible sealed joint that permits limited movement of the housing relative to the tubular member generally along the length of the tubular member while inhibiting flow of contaminants from the exterior into the passage formed by the rigid housing between the Brewster window and mirror. A seal is placed between the rigid housing and mirror to inhibit flow of such contaminants into the passage from the mirror location. A mounting structure joins the rigid housing to the gas laser envelope to secure them together and includes an adjustment mechanism that permits the housing to be moved relative to the envelope for adjusting the angular orientation of the supported mirror relative to the intercepted laser beam.

Mohler, G.E.

1984-03-27T23:59:59.000Z

407

Insulating shade assembly with removable cover  

SciTech Connect

An insulating window shade assembly is described which consists of: bracket means adapted to be mounted on the frame of a window; a first roller carrying an insulating shade and being disposed within the bracket means on the inside of the window, the shade being adapted to be drawn from the roller to cover the inside of the window and to be wound upon the roller to expose the window, a second roller carrying a removable cover fabric on the inside of the shade and being supported by the bracket means, the second roller being spaced from and disposed independently of the first roller, means disposed adjacent only the bottom edge of the insulating shade for connecting only the bottom edge of the cover fabric to the bottom only of the insulating shade so that the insulating shade and cover fabric may be drawn together over the inside of the window; guide means disposed adjacent the second roller and between the second roller and the insulating shade, the cover fabric passing over the guide means, for causing the cover fabric to hang closely adjacent the front of the insulating shade when the insulating shade is drawn over the window and when the insulating shade and cover fabric are connected together by the connecting means, and means for continually tensioning the cover fabric when the insulating shade is drawn and when the cover fabric is connected thereto so that the cover fabric lies smoothly over the shade.

Hausmann, S.; McLane, A. Jr.

1986-09-09T23:59:59.000Z

408

Rnnotator: an automated de novo transcriptome assembly pipeline from stranded RNA-Seq reads  

E-Print Network (OSTI)

transcriptome assembly pipeline from stranded RNA-Seq readsRnnotator assembly pipeline. Figure 2. Read dereplicationan automated software pipeline that generates transcript

Martin, Jeffrey

2011-01-01T23:59:59.000Z

409

Automatic Detection of Fixed Echoes in Sodar Facsimile Records Using the Wavelet Transform  

Science Conference Proceedings (OSTI)

A method to detect and remove fixed echoes in sodar facsimile records is described. This method is based on the capability of the wavelet transform to objectively detect singularities in signals, and it is adapted to two-tone facsimile records. ...

J. A. Kalogiros; C. G. Helmis

1999-06-01T23:59:59.000Z

410

Error Analysis and Sampling Strategy Design for Using Fixed or Mobile Platforms to Estimate Ocean Flux  

Science Conference Proceedings (OSTI)

For estimating lateral flux in the ocean using fixed or mobile platforms, the authors present a method of analyzing the estimation error and designing the sampling strategy. When an array of moorings is used, spatial aliasing leads to an error in ...

Yanwu Zhang; James G. Bellingham; Yi Chao

2010-03-01T23:59:59.000Z

411

Can we fix the security economics of federated authentication? (transcript of discussion)  

Science Conference Proceedings (OSTI)

OK, so the talk that I've got today is entitled "Can We Fix the Security Economics of Federated Authentication?" and some of this is stuff that I did while I was at Google in January and February. I'm on sabbatical this year and so I'm visiting various ...

Ross Anderson

2011-03-01T23:59:59.000Z

412

Testing the Fixed Anvil Temperature Hypothesis in a Cloud-Resolving Model  

Science Conference Proceedings (OSTI)

Using cloud-resolving simulations of tropical radiative–convective equilibrium, it is shown that the anvil temperature changes by less than 0.5 K with a 2-K change in SST, lending support to the fixed anvil temperature (FAT) hypothesis. The ...

Zhiming Kuang; Dennis L. Hartmann

2007-05-01T23:59:59.000Z

413

Raspberry derived mesoporous carbon-tubules and fixed-bed adsorption of pharmaceutical drugs  

E-Print Network (OSTI)

Raspberry derived mesoporous carbon-tubules and fixed-bed adsorption of pharmaceutical drugs Shashi 210023, China c Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12 Department, University of Florida, Gainesville, FL 32611-0290, USA 1. Introduction Pharmaceutical drugs (PD

Ma, Lena

414

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time  

E-Print Network (OSTI)

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time Yu Ru, Jan Kleissl, and Sonia Martinez Abstract-- In this paper, we study a battery sizing problem for grid-connected photovoltaic (PV) systems assuming that the battery charging/discharging limit scales linearly with its

Martínez, Sonia

415

Practical on-line dvs scheduling for fixed-priority real-time systems  

E-Print Network (OSTI)

We present an on-line Dynamic Voltage Scaling (DVS) algorithm for preemptive fixed-priority real-time systems called low power Limited Demand Analysis with Transition overhead (lpLDAT). It is the first algorithm in its class to explicitly account for transition overhead, and can reduce the energy consumption by as much as 40 % when compared to previous methods. 1.

Bren Mochocki; Xiaobo Sharon Hu

2005-01-01T23:59:59.000Z

416

An efficient fixed-point IMDCT algorithm for high-resolution audio appliances  

Science Conference Proceedings (OSTI)

In this paper, we propose an efficient fixed-point IMDCT algorithm for high-resolution audio (or audio/video) appliances such as digital media receiver (DMR) and high-end portable media player (PMP). A novel block floating-point algorithm and a method ... Keywords: High-resolution audio, IMDCT, block floating-point, guard bits

Byoung Eul Kim; Jin-Yong Chung; Sun-Young Hwang

2008-11-01T23:59:59.000Z

417

Initialization of the Benders master problem using valid inequalities applied to fixed-charge network problems  

Science Conference Proceedings (OSTI)

Network problems concern the selection of arcs in a graph in order to satisfy, at minimum cost, some flow requirements, usually expressed in the form of node-node pair demands. Benders decomposition methods, based on the idea of partitioning of the initial ... Keywords: Benders decomposition, Fixed-charge network problem, Mixed integer programming, Refinery, Scheduling of crude oil, Valid inequalities

Georgios K. D. Saharidis; Maria Boile; Sotiris Theofanis

2011-06-01T23:59:59.000Z

418

Fixing variable values in the capacitated facility location problem through pairing and surrogate constraint analysis  

Science Conference Proceedings (OSTI)

The Osorio and Glover (2003) use of dual surrogate analysis is exploited to fix variables in capacitated facility location problems (CFLP). The surrogate constraint is obtained by weighting the original problem constraints by their associated dual values ... Keywords: capacitated facility location problem, constraint pairing, duality, surrogate constraints

Maria A. Osorio; Abraham Sánchez

2009-06-01T23:59:59.000Z

419

Use of ionizing radiation for fixing textile resins on wool. [Gamma rays  

SciTech Connect

Ambient-temperature treatments with ionizing radiation can be used as an alternative to conventional thermal/catalytic cure methods of fixing textile resins on wool materials. The effectiveness of the radiation-induced fixation of resins on wool has been demonstrated by machine-wash shrinkage tests on fabrics treated with a variety of commercial polymer resins.

McLaren, K.G.

1980-04-01T23:59:59.000Z

420

3D Optoelectronic Fix Point Unit and Its Advantages Processing 3D Data  

Science Conference Proceedings (OSTI)

In this paper we show the design of a 3 dimensional optoelectronic hardware approach to realize a fix point processing unit. For that we show the main ideas of the low level algorithm. We will introduce several concepts and evaluate them with regard ...

B. Kasche; Dietmar Fey; T. Höhn; Werner Erhard

1999-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

A Hybrid Simulated Annealing and Simplex Method for Fixed-Cost Capacitated Multicommodity Network Design  

Science Conference Proceedings (OSTI)

The fixed-cost Capacitated Multicommodity Network Design (CMND) problem is a well known NP-hard problem. This paper presents a matheuristic algorithm combining Simulated Annealing (SA) metaheuristic and Simplex method for CMND problem. In the proposed ... Keywords: Matheuristic, Metaheuristic, Multicommodity Capacitated Network Design Problem, Network Design Problem, Simulated Annealing

Masoud Yaghini; Mohammad Karimi; Mohadeseh Rahbar; Rahim Akhavan

2011-10-01T23:59:59.000Z

422

Fixed Queries Array: A Fast and Economical Data Structure for Proximity Searching  

Science Conference Proceedings (OSTI)

Pivot-based algorithms are effective tools for proximity searching in metric spaces. They allow trading space overhead for number of distance evaluations performed at query time. With additional search structures (that pose extra space overhead) they ... Keywords: fixed queries tree, metric spaces, range search, similarity search

Edgar Chávez; José L. Marroquín; Gonzalo Navarro

2001-06-01T23:59:59.000Z

423

Experimental Study on Tar-free Gasification of Coal in a Fixed Bed  

Science Conference Proceedings (OSTI)

Throated twin-oxidation zone gasifier of coal was exploited based on the characteristic analysis on the updraft gasifier and downdraft gasifier, and tar-free gasification of coal was experimentally investigated in the throated twin-oxidation zone gasifier. ... Keywords: tar-free gasification, fixed bed, operational parameters

Wang Lianyong; Cai Jiuju

2011-01-01T23:59:59.000Z

424

On inverse problems for the multidimensional relativistic Newton equation at fixed energy  

E-Print Network (OSTI)

In this paper, we consider inverse scattering and inverse boundary value problems at sufficiently large and fixed energy for the multidimensional relativistic Newton equation with an external potential $V$, $V\\in C^2$. Using known results, we obtain, in particular, theorems of uniqueness.

Alexandre Jollivet

2006-07-03T23:59:59.000Z

425

Thermodynamics in 2+1 flavor QCD with improved Wilson quarks by the fixed scale approach  

E-Print Network (OSTI)

We study thermodynamic properties of 2+1 flavor QCD with improved Wilson quarks coupled with the RG improved Iwasaki glue, using the fixed scale approach. We present the results for the equation of state, renormalized Polyakov loop, and chiral condensate.

T. Umeda; S. Aoki; S. Ejiri; T. Hatsuda; K. Kanaya; Y. Maezawa; H. Ohno

2012-12-06T23:59:59.000Z

426

Improved Fixed-Parameter Algorithms for Minimum-Flip Consensus Trees  

Science Conference Proceedings (OSTI)

In computational phylogenetics, the problem of constructing a consensus tree for a given set of rooted input trees has frequently been addressed. In this article we study the Minimum-Flip Problem: the input trees are transformed into a binary ... Keywords: Phylogenetics, consensus tree, fixed-parameter algorithm

Sebastian Böcker; Quang Bao Anh Bui; Anke Truss

2012-01-01T23:59:59.000Z

427

SiO2 - polyethylene reflected critical assembly  

SciTech Connect

The Planet universal critical assembly machine was used to perform a series of three critical experiments. This experiment used HEU foils reflected by polyethylene and interleaved with plates of SiO{sub 2} glass and polyethylene. Only the experiment performed using the SiO{sub 2} matrix material is evaluated in this report. The assembly was delayed critical with 33 HEU foils or 17 units (sets of HEU foils). The critical assembly has an intermediate neutron spectrum, with 51.2% of the fissions occurring between 0.625 eV and 100 keV. The calculational results show good agreement with the experimental results.

Brewer, R. W. (Roger W.); Sanchez, R. G. (Rene G.)

2001-01-01T23:59:59.000Z

428

Portable instrument for inspecting irradiated nuclear fuel assemblies  

DOE Patents (OSTI)

A portable instrument for measuring induced Cerenkov radiation associated with irradiated nuclear fuel assemblies in a water-filled storage pond is disclosed. The instrument includes a photomultiplier tube and an image intensifier which are operable in parallel and simultaneously by means of a field lens assembly and an associated beam splitter. The image intensifier permits an operator to aim and focus the apparatus on a submerged fuel assembly. Once the instrument is aimed and focused, an illumination reading can be obtained with the photomultiplier tube. The instrument includes a lens cap with a carbon-14/phosphor light source for calibrating the apparatus in the field.

Nicholson, Nicholas (Los Alamos, NM); Dowdy, Edward J. (Los Alamos, NM); Holt, David M. (Los Alamos, NM); Stump, Jr., Charles J. (Santa Fe, NM)

1985-01-01T23:59:59.000Z

429

Repair and Strengthening by Use of Superficial Fixed Laminates of Cracked Masonry Walls Sheared Horizontally-Laboratory Tests  

Science Conference Proceedings (OSTI)

There are many methods of crack repairing in masonry structures. One of them is repair and strengthening by using of superficial fixed laminates, especially in case of masonry walls with plastering on their both sides. The initial laboratory tests of three different types of strengthening of diagonal cracked masonry wallettes are presented. Tests concerned three clay brick masonry walls subjected to horizontal shearing with two levels of precompression and strengthened by flexible polymer injection, superficial glass fixed by polymer fibre laminate plates and using of CRFP strips stiff fixed to the wall surface by polymer and stiff resin epoxy fixing are presented and discussed.

Kubica, Jan [Department of Structural Engineering, Silesian University of Technology, Akademicka 5, PL-44-100 Gliwice (Poland); Kwiecien, Arkadiusz; Zajac, Boguslaw [Department of Civil Engineering, Cracow University of Technology, Warszawska 24, PL-31-155 Krakow (Poland)

2008-07-08T23:59:59.000Z

430

Fabrication Of Multilayered Thin Films Via Spin-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

Fabrication Of Multilayered Thin Films Via Spin-Assembly Fabrication Of Multilayered Thin Films Via Spin-Assembly Fabrication Of Multilayered Thin Films Via Spin-Assembly A process of forming multilayer thin film heterostructures. Available for thumbnail of Feynman Center (505) 665-9090 Email Fabrication Of Multilayered Thin Films Via Spin-Assembly A process of forming multilayer thin film heterostructures is disclosed and includes applying a solution including a first water-soluble polymer from the group of polyanionic species, polycationic species and uncharged polymer species onto a substrate to form a first coating layer on the substrate, drying the first coating layer on the substrate, applying a solution including a second water-soluble polymer from the group of polyanionic species, polycationic species and uncharged polymer species

431

Guided Self-Assembly of Gold Thin Films  

NLE Websites -- All DOE Office Websites (Extended Search)

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

432

Deputy Secretary Poneman's Remarks at the Nuclear Energy Assembly - As  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Assembly - Energy Assembly - As Prepared for Delivery Deputy Secretary Poneman's Remarks at the Nuclear Energy Assembly - As Prepared for Delivery May 11, 2011 - 6:01pm Addthis Deputy Secretary of Energy Daniel Poneman Remarks as Prepared for Delivery Nuclear Energy Assembly Wednesday, May 11, 2011 Washington, DC Introduction Good morning. Thank you Jim for the introduction, and thank you for the invitation to speak here today. I just got back last night from Savannah River Site, where I visited our nuclear facilities and found a community that is dedicated, capable, and energized by a vision to build their expertise in environmental remediation, national security, and clean energy into a dynamic future vision for the site and for the community. It's a great thing. As soon as you pass through the gates, you find

433

Guided Self-Assembly of Gold Thin Films  

NLE Websites -- All DOE Office Websites (Extended Search)

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

434

Anatomy of a Nuclear Pin Assembly | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Anatomy of a Nuclear Pin Assembly Anatomy of a Nuclear Pin Assembly Anatomy of a Nuclear Pin Assembly January 29, 2013 - 10:02am Addthis Anatomy of a Nuclear Pin Assembly What are the key facts? A method for building predictability into the NEAMS Toolkit is to correctly capture the material properties at the microstructural level. Upscaling, or bridging the scales is an equally complicated challenge for multi-scale simulation efforts. While posing a significant challenge, materials and other fundamental modeling efforts are a way to effectively leverage resources. Even with the most advanced supercomputing power no model is able to capture everything happening at all scales, so it's necessary to really understand the system of interest by equally understanding the dominant physical parameters of that system. Only these dominant effects will be

435

An applied manufacturing system for highly-complex assembly factory  

E-Print Network (OSTI)

This thesis focuses on a manufacturing system at a semiconductor equipment manufacturing company (SEMC). The company faces highly variable demand for its products that require highly-complex assembly within the factory. ...

Umeda, Koji

2008-01-01T23:59:59.000Z

436

Long-life leak standard assembly. [Patent application  

DOE Patents (OSTI)

The present invention is directed to a portable leak standard assembly which is capable of providing a stream of high-purity reference gas at a virtually constant flow rate over an extensive period of time. The leak assembly comprises a high pressure reservoir coupled to a metal leak valve through a valve-controlled conduit. A reproducible leak valve useful in this assembly is provided by a metal tube crimped with a selected pressure loading for forming an orifice in the tube with this orifice being of a sufficient size to provide the selected flow rate. The leak valve assembly is formed of metal so that it can be baked-out in a vacuum furnace to rid the reservoir and attendent components of volatile impurities which reduce the efficiency of the leak standard.

Basford, J.A.; Mathis, J.E.; Wright, H.C.

1980-11-12T23:59:59.000Z

437

Yeast Golden Gate: Standardized Assembly of S. cerevisiae Transcriptional Units  

E-Print Network (OSTI)

BBF RFC 88 describes a new standard for the assembly of basic Saccharomyces cerevisiae transcriptional units (TUs) consisting of a promoter/5’untranslated region (UTR), open reading frame (ORF), and 3’UTR/terminator. Note ...

Boeke, Jef

2012-10-11T23:59:59.000Z

438

DNA hybridization : fundamental studies and applications in directed assembly  

E-Print Network (OSTI)

Programmed self-assembly using non-covalent DNA-DNA interactions is a promising technique for the creation of next-generation functional devices for electronic, optical, and magnetic applications. This thesis develops the ...

Bajaj, Manish G. (Manish Gopal)

2005-01-01T23:59:59.000Z

439

Synthetic scaffolds and protein assemblies for engineering applications  

E-Print Network (OSTI)

S-layer proteins, which naturally self-assemble on the exterior of cells, provide an interesting basis for the creation of synthetic scaffolds. In this thesis, I created a plasmid which produces a recombinant form of a ...

Norville, Julie Erin, 1980-

2004-01-01T23:59:59.000Z

440

Assembly Design and Evaluation in an Augmented Reality Environment  

E-Print Network (OSTI)

The technologies and methodologies of assembly design and evaluation in the early design stage are highly significant to product development. This paper looks at a promising technology to mix real components (e.g. physical ...

Pang, Y.

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Dynamics of Active Self-Assemble Materials - Argonne National...  

NLE Websites -- All DOE Office Websites (Extended Search)

statistical physics. In the next three years we plan to explore new approaches to synthesis and discovery of a broad range of self-assembled bio-inspired materials stemming...

442

Layer-by-layer assembly in confined geometries  

E-Print Network (OSTI)

The fundamental nature of layer-by-layer (LbL) assembly in confined geometries was investigated for a number of different chemical systems. The first part of this thesis concerns the modification of microfluidic and ...

DeRocher, Jonathan P

2011-01-01T23:59:59.000Z

443

Mechanical behavior and microstructure of self-assembling oligopeptide gels  

E-Print Network (OSTI)

Hydrogels have become widely used in the fields of tissue engineering and drug delivery. One class of hydrogel is formed from synthetic oligopeptides that self-assemble into a solution of beta-sheet filaments. These filaments ...

Hammond, Nathan Allen

2010-01-01T23:59:59.000Z

444

Downhole delay assembly for blasting with series delay  

DOE Patents (OSTI)

A downhole delay assembly is provided which can be placed into a blasthole for initiation of explosive in the blasthole. The downhole delay assembly includes at least two detonating time delay devices in series in order to effect a time delay of longer than about 200 milliseconds in a round of explosions. The downhole delay assembly provides a protective housing to prevent detonation of explosive in the blasthole in response to the detonation of the first detonating time delay device. There is further provided a connection between the first and second time delay devices. The connection is responsive to the detonation of the first detonating time delay device and initiates the second detonating time delay device. A plurality of such downhole delay assemblies are placed downhole in unfragmented formation and are initiated simultaneously for providing a round of explosive expansions. The explosive expansions can be used to form an in situ oil shale retort containing a fragmented permeable mass of formation particles.

Ricketts, Thomas E. (Grand Junction, CO)

1982-01-01T23:59:59.000Z

445

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance...

446

1 Overview of out of plane MEMS assembly techniques  

E-Print Network (OSTI)

Abstract — This paper deals with a synthesis of the activities of the French FEMTO-ST institute in the field of robotic microassembly. It deals with the tridimensional assembly of objects whose typical size is from 10 microns to 400 microns. We are especially focusing on the automation of micro-assembly based on several principles. Closed loop control based on microvision has been studied and applied on the fully automatic assembly of several 400 microns objects. Force control has been also analyzed and is proposed for optical Microsystems assembly. At least, open loop trajectories of 40 microns objects with a throughput of 1800 unit per hour have been achieved. Scientific and technological aspects and industrial relevance will be presented. I.

M. Gauthier; C. Clévy; S. Dembelé; B. Tamadazte; K. Rabenorosoa; N. Piat; P. Lutz

2013-01-01T23:59:59.000Z

447

Education: Digital Resource Center - VIDEOS: Assembly and Test  

Science Conference Proceedings (OSTI)

Jul 20, 2007 ... Citation: "Assembly and Test." How Microprocessors Work. February 2007. How Stuff Works, Inc. Watch Video Edited: 7/2/2008 at 11:22 AM by ...

448

3D assembly and actuation of nanopatterned membranes using nanomagnets  

E-Print Network (OSTI)

A new method for aligning and actuating membranes for 3D nano-assembly based on the interactions of nanomagnets has been developed. Arrays of nanopatterned magnetic material are integrated onto thin-film membranes. It is ...

Nichol, Anthony John

2011-01-01T23:59:59.000Z

449

Assessment of colloidal self-assembly for photonic crystal  

E-Print Network (OSTI)

A suspension of monodisperse colloids has an interesting property of self-assembling into a three-dimensional ordered structure. This crystalline material has attracted significant interest on the implementation of photonic ...

Yip, Chan Hoe

2006-01-01T23:59:59.000Z

450

Dynamical Self-Assembly of Nanocrystal Superlattices during Colloidal...  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynamical Self-Assembly of Nanocrystal Superlattices during Colloidal Droplet Evaporation by in situ Small Angle X-Ray Scattering S. Narayanan, J. Wang, X.-M. Lin (Argonne National...

451

Effects and applications of capillary condensation in ultrathin nanoparticle assemblies  

E-Print Network (OSTI)

The electrostatic layer-by-layer (LbL) assembly technique can be used to make uniform, conformal multi-stack nanoparticle thin films from aqueous solution, with precise thickness and roughness control over each stack. Much ...

Gemici, Zekeriyya

2010-01-01T23:59:59.000Z

452

Viral genome structures are optimal for capsid assembly  

E-Print Network (OSTI)

Understanding how virus capsids assemble around their nucleic acid (NA) genomes could promote efforts to block viral propagation or to reengineer capsids for gene therapy applications. We develop a coarse-grained model of capsid proteins and NAs with which we investigate assembly dynamics and thermodynamics. In contrast to recent theoretical models, we find that capsids spontaneously `overcharge'; i.e., the negative charge of the NA exceeds the positive charge on capsid. When applied to specific viruses, the optimal NA lengths closely correspond to the natural genome lengths. Calculations based on linear polyelectrolytes rather than base-paired NAs underpredict the optimal length, demonstrating the importance of NA structure to capsid assembly. These results suggest that electrostatics, excluded volume, and NA tertiary structure are sufficient to predict assembly thermodynamics and that the ability of viruses to selectively encapsidate their genomic NAs can be explained, at least in part, on a thermodynamic basis.

Jason D. Perlmutter; Cong Qiao; Michael F. Hagan

2013-05-15T23:59:59.000Z

453

Guided Self-Assembly of Gold Thin Films  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of...

454

Guided Self-Assembly of Gold Thin Films  

NLE Websites -- All DOE Office Websites (Extended Search)

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

455

Guided Self-Assembly of Gold Thin Films  

NLE Websites -- All DOE Office Websites (Extended Search)

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

456

Topobo : a 3-D constructive assembly system with kinetic memory  

E-Print Network (OSTI)

We introduce Topobo, a 3-D constructive assembly system em- bedded with kinetic memory, the ability to record and playback physical motion. Unique among modeling systems is Topobo's coincident physical input and output ...

Raffle, Hayes Solos, 1974-

2004-01-01T23:59:59.000Z

457

Method of making membrane-electrode assemblies for electrochemical cells and assemblies made thereby  

DOE Patents (OSTI)

A method is described for making a combination, unitary, membrane and electrode assembly having a solid polymer electrolyte membrane, and first and second electrodes at least partially embedded in opposed surfaces of the membrane. The electrodes each comprise a respective group of finely divided carbon particles, very finely divided catalytic particles supported on internal and external surfaces of the carbon particles and a proton conductive material intermingled with the catalytic and carbon particles. A first group of finely divided carbon particles forming the first electrode has greater water attraction and retention properties, and is more hydrophilic than a second group of carbon particles forming the second electrode. In a preferred method, the membrane electrode assembly of the invention is prepared by forming a slurry of proton conductive material and at least one group of the carbon and catalyst particles. The slurry is applied to the opposed surfaces of the membrane and heated while being pressed to the membrane for a time and at a temperature and compressive load sufficient to embed at least a portion of the particles into the membrane. 10 figs.

Swathirajan, S.; Mikhail, Y.M.

1994-05-31T23:59:59.000Z

458

Turbine inner shroud and turbine assembly containing such inner shroud  

DOE Patents (OSTI)

A turbine inner shroud and a turbine assembly. The turbine assembly includes a turbine stator having a longitudinal axis and having an outer shroud block with opposing and longitudinally outward facing first and second sides having open slots. A ceramic inner shroud has longitudinally inward facing hook portions which can longitudinally and radially surround a portion of the sides of the outer shroud block. In one attachment, the hook portions are engageable with, and are positioned within, the open slots.

Bagepalli, Bharat Sampathkumaran (Niskayuna, NY); Corman, Gregory Scot (Ballston Lake, NY); Dean, Anthony John (Scotia, NY); DiMascio, Paul Stephen (Clifton Park, NY); Mirdamadi, Massoud (Niskayuna, NY)

2001-01-01T23:59:59.000Z

459

Monthly progress report for November 1954: Critical assembly research  

SciTech Connect

This report very briefly describes the status of a critical assembly project. Three items are reported. A study of counter response and spatial distribution of the flux from the assembly indicated a greater efficiency for 100 KeV neutrons than for 1-3 MeV neutrons for Hansen counters. An improved counter significantly increased the counting rate for the measurements of neutron emission from oralloy and tuballoy. Coding was begun for a one-group multiregion adjoint flux problem.

Carothers, J.

1954-11-01T23:59:59.000Z

460

Fluidized bed combustor and coal gun-tube assembly therefor  

DOE Patents (OSTI)

A coal supply gun assembly for a fluidized bed combustor which includes heat exchange elements extending above the bed's distributor plate assembly and in which the gun's nozzles are disposed relative to the heat exchange elements to only discharge granular coal material between adjacent heat exchange elements and in a path which is substantially equidistant from adjacent heat exchange elements.

Hosek, William S. (Mt. Tabor, NJ); Garruto, Edward J. (Wayne, NJ)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Continuous Control and the Algebraic L-theory Assembly Map.  

E-Print Network (OSTI)

In this work, the assembly map in L-theory for the family of finite subgroups is proven to be a split injection for a class of groups. Groups in this class, including virtually polycyclic groups, have universal spaces that satisfy certain geometric conditions. The proof follows the method developed by Carlsson-Pedersen to split the assembly map in the case of torsion free groups. Here, the continuously controlled techniques and results are extended to handle groups with torsion.

David Rosenthal.; no. 2; 193--209

462

Detachable connection for a nuclear reactor fuel assembly  

DOE Patents (OSTI)

A locking connection for releasably attaching a handling socket to the duct tube of a fuel assembly for a nuclear reactor. The connection comprises a load pad housing mechanically attached to the duct tube and a handling socket threadably secured within the housing. A retaining ring is interposed between the housing and the handling socket and is formed with a projection and depression engagable within a cavity and groove of the housing and handling socket, respectively, to form a detachable interlocked connection assembly.

Christiansen, D.W.; Karnesky, R.A.

1983-08-29T23:59:59.000Z

463

A New Route to Nano Self-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Route to Nano Self-Assembly A New Route to Nano Self-Assembly A New Route to Nano Self-Assembly Print Wednesday, 24 February 2010 00:00 If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

464

Self-Assembly of Polymer Nano-Elements on Sapphire  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembly of Polymer Self-Assembly of Polymer Nano-Elements on Sapphire Self-Assembly of Polymer Nano-Elements on Sapphire Print Wednesday, 25 March 2009 00:00 Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to produce perfect surfaces over large areas. Recently, a group of researchers used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains. Grazing-incidence small-angle x-ray scattering (GISAXS) at ALS Beamline 7.3.3 verified the arrays' quasi long-range crystalline order over arbitrarily large wafer surfaces. It's expected that this new method of producing highly ordered macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries and perhaps others, such as photovoltaics.

465

Synergism in Multicomponent Self-Propagating Molecular Assemblies  

Science Conference Proceedings (OSTI)

Multicomponent self-propagating molecular assemblies (SPMAs) have been generated from an organic chromophore, a redox-active polypyridyl complex, and PdCl{sub 2}. The structure of the multicomponent SPMA is not a linear combination of two assemblies generated with a single molecular constituent. Surface-confined assemblies formed from only the organic chromophore and PdCl{sub 2} are known to follow linear growth, whereas the combination of polypyridyl complexes and PdCl{sub 2} results in exponential growth. The present study demonstrates that an iterative deposition of both molecular building blocks with PdCl{sub 2} results in an exponentially growing assembly. The nature of the assembly mechanism is dictated by the polypyridyl complex and overrides the linear growth process of the organic component. Relatively smooth, multicomponent SPMAs have been obtained with a thickness of {approx}20 nm on silicon, glass, and indium-tin oxide (ITO) coated glass. Detailed information of the structure and of the surface-assembly chemistry were obtained using transmission optical (UV/Vis) spectroscopy, ellipsometry, atomic force microscopy (AFM), synchrotron X-ray reflectivity (XRR), and electrochemistry.

L Motiei; M Sassi; R Kaminker; G Evmenenko; P Dutta; M Iron; M van der Boom

2011-12-31T23:59:59.000Z

466

Installation and assembly device and method of using  

DOE Patents (OSTI)

The present invention relates to an installation and assembly device and method for facilitating the fitup of mating components during blind or remote installation and assembly, especially where close fitup tolerances are involved. The present invention is particularly useful for the purpose of facilitating vertical and/or radial relative positioning of a pump impeller within a mating inlet nozzle during a blind assembly wherein actual fitup cannot be observed during installation. The information within identifies just one successful application of the installation and assembly alignment device for a pump. The device, however, is not solely limited to pump assembly but can be used in other cases where fitup of a sleeve inside a mating bore is required under conditions of close tolerance during a blind or remote assembly. The device is likewise not limited to circular configurations but can be used for many other shapes or configurations. Any material that can be machined and hold reasonably close tolerances can be used for the device. Also, because the sleeve position is adjusted by set screws or bolts, the concentricity can be radially biased, if required, to achieve particular alignment conditions.

Kolsun, G.J.

1995-12-31T23:59:59.000Z

467

THE XMM CLUSTER SURVEY: THE STELLAR MASS ASSEMBLY OF FOSSIL GALAXIES  

SciTech Connect

This paper presents both the result of a search for fossil systems (FSs) within the XMM Cluster Survey and the Sloan Digital Sky Survey and the results of a study of the stellar mass assembly and stellar populations of their fossil galaxies. In total, 17 groups and clusters are identified at z < 0.25 with large magnitude gaps between the first and fourth brightest galaxies. All the information necessary to classify these systems as fossils is provided. For both groups and clusters, the total and fractional luminosity of the brightest galaxy is positively correlated with the magnitude gap. The brightest galaxies in FSs (called fossil galaxies) have stellar populations and star formation histories which are similar to normal brightest cluster galaxies (BCGs). However, at fixed group/cluster mass, the stellar masses of the fossil galaxies are larger compared to normal BCGs, a fact that holds true over a wide range of group/cluster masses. Moreover, the fossil galaxies are found to contain a significant fraction of the total optical luminosity of the group/cluster within 0.5 R{sub 200}, as much as 85%, compared to the non-fossils, which can have as little as 10%. Our results suggest that FSs formed early and in the highest density regions of the universe and that fossil galaxies represent the end products of galaxy mergers in groups and clusters.

Harrison, Craig D.; Miller, Christopher J. [Department of Astronomy, University of Michigan, Ann Arbor, MI 48109 (United States); Richards, Joseph W.; Deadman, Paul-James [Center for Time Domain Informatics, University of California, Berkeley, CA 94720 (United States); Lloyd-Davies, E. J.; Kathy Romer, A.; Mehrtens, Nicola; Liddle, Andrew R. [Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH (United Kingdom); Hoyle, Ben [Institute of Sciences of the Cosmos (ICCUB) and IEEC, Physics Department, University of Barcelona, Barcelona 08024 (Spain); Hilton, Matt [Astrophysics and Cosmology Research Unit, School of Mathematical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000 (South Africa); Stott, John P.; Capozzi, Diego; Collins, Chris A. [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD (United Kingdom); Sahlen, Martin [Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, AlbaNova, SE-106 91 Stockholm (Sweden); Stanford, S. Adam [Physics Department, University of California, Davis, CA 95616 (United States); Viana, Pedro T. P., E-mail: craigha@umich.edu [Centro de Astrofisica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto (Portugal)

2012-06-10T23:59:59.000Z

468

A Generalized Adjoint Approach for Quantifying Reflector Assembly Discontinuity Factor Uncertainties  

SciTech Connect

Sensitivity-based uncertainty analysis of assembly discontinuity factors (ADFs) can be readily performed using adjoint methods for infinite lattice models. However, there is currently no adjoint-based methodology to obtain uncertainties for ADFs along an interface between a fuel and reflector region. To accommodate leakage effects in a reflector region, a 1D approximation is usually made in order to obtain the homogeneous interface flux required to calculate the ADF. Within this 1D framework an adjoint-based method is proposed that is capable of efficiently calculating ADF uncertainties. In the proposed method the sandwich rule is utilized to relate the covariance of the input parameters of 1D diffusion theory in the reflector region to the covariance of the interface ADFs. The input parameters covariance matrix can be readily obtained using sampling-based codes such as XSUSA or adjoint-based codes such as TSUNAMI. The sensitivity matrix is constructed using a fixed-source adjoint approach for inputs characterizing the reflector region. An analytic approach is then used to determine the sensitivity of the ADFs to fuel parameters using the neutron balance equation. A stochastic approach is used to validate the proposed adjoint-based method.

Yankov, Artem [University of Michigan; Collins, Benjamin [University of Michigan; Jessee, Matthew Anderson [ORNL; Downar, Thomas [University of Michigan

2012-01-01T23:59:59.000Z

469

Diversity order for amplify-and-forward dual-hop systems with fixed-gain relay under Nakagami fading channels  

Science Conference Proceedings (OSTI)

Dual-hop transmission systems employing fixed-gain amplify-and-forward (AF) relaying have been studied recently over Nakagami fading channels. These analyses, however, either have imposed certain constraints on the fading parameters or have not been ... Keywords: Nakagami fading, amplify-and-forward, diversity order, fixed-gain relay, outage probability

Feng Xu; Francis C. M. Lau; Dian-Wu Yue

2010-01-01T23:59:59.000Z

470

The Response of Tropical Cyclone Statistics to an Increase in CO2 with Fixed Sea Surface Temperatures  

Science Conference Proceedings (OSTI)

The effects on tropical cyclone statistics of doubling CO2, with fixed sea surface temperatures (SSTs), are compared to the effects of a 2-K increase in SST, with fixed CO2, using a 50-km resolution global atmospheric model. Confirming earlier ...

Isaac M. Held; Ming Zhao

2011-10-01T23:59:59.000Z

471

The inverse scattering problem at fixed energy based on the Marchenko equation for an auxiliary Sturm-Liouville operator  

E-Print Network (OSTI)

A new approach is proposed to the solution of the quantum mechanical inverse scattering problem at fixed energy. The method relates the fixed energy phase shifts to those arising in an auxiliary Sturm-Liouville problem via the interpolation theory of the Weyl-Titchmarsh m-function. Then a Marchenko equation is solved to obtain the potential.

Palmai, Tamas

2012-01-01T23:59:59.000Z

472

Simplified process for leaching precious metals from fuel cell membrane electrode assemblies  

DOE Patents (OSTI)

The membrane electrode assemblies of fuel cells are recycled to recover the catalyst precious metals from the assemblies. The assemblies are cryogenically embrittled and pulverized to form a powder. The pulverized assemblies are then mixed with a surfactant to form a paste which is contacted with an acid solution to leach precious metals from the pulverized membranes.

Shore, Lawrence (Edison, NJ); Matlin, Ramail (Berkeley Heights, NJ)

2009-12-22T23:59:59.000Z

473

Maximizing Energy Capture of Fixed-Pitch Variable-Speed Wind Turbines  

DOE Green Energy (OSTI)

Field tests of a variable-speed, stall-regulated wind turbine were conducted at a US Department of Energy Laboratory. A variable-speed generating system, comprising a doubly-fed generator and series-resonant power converter, was installed on a 275-kW, downwind, two-blade wind turbine. Gearbox, generator, and converter efficiency were measured in the laboratory so that rotor aerodynamic efficiency could be determined from field measurement of generator power. The turbine was operated at several discrete rotational speeds to develop power curves for use in formulating variable-speed control strategies. Test results for fixed-speed and variable-speed operation are presented along with discussion and comparison of the variable-speed control methodologies. Where possible, comparisons between fixed-speed and variable-speed operation are shown.

Pierce, K.; Migliore, P.

2000-08-01T23:59:59.000Z

474

One-parameter semigroups of analytic functions, fixed points and the Koenigs function  

Science Conference Proceedings (OSTI)

Analogues of the Berkson-Porta formula for the infinitesimal generator of a one-parameter semigroup of holomorphic maps of the unit disc into itself are obtained in the case when, along with a Denjoy-Wolff point, there also exist other fixed points. With each one-parameter semigroup a so-called Koenigs function is associated, which is a solution, common for all elements of the one-parameter semigroup, of a certain functional equation (Schroeder's equation in the case of an interior Denjoy-Wolff point and Abel's equation in the case of a boundary Denjoy-Wolff point). A parametric representation for classes of Koenigs functions that takes account of the Denjoy-Wolff point and other fixed points of the maps in the one-parameter semigroup is presented. Bibliography: 19 titles.

Goryainov, Victor V; Kudryavtseva, Olga S [Volzhsky Institute of Humanities, Volgograd Region, Volzhsky (Russian Federation)

2011-07-31T23:59:59.000Z

475

Microsoft Word - Fixed Ladder and Step-Ladder Inspection Checklist.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

Ladder Inspections Ladder Inspections Due to recent information, lessons learned, and accident reports from across the DOE complex, emphasis needs to be placed on the importance of inspecting ladders, both portable and fixed. Portable ladders should be inspected prior to each use to ensure they are in good working order. Portable ladders can be damaged during use, handling, moving, and storage, which can render the ladder unsafe for use. Recent information from the DOE complex has shown unsafe conditions that may be found during proper pre- use ladder inspections. All portable ladders with any damage or defect must be removed from service. (Photos 1 and 2) Attachment 1 is a provided as a guideline for portable ladder inspections. Fixed Ladders should be inspected on a routine basis, especially when installed (re-

476

Microhole Coiled Tubing Bottom Hole Assemblies  

Science Conference Proceedings (OSTI)

The original objective of the project, to deliver an integrated 3 1/8-inch diameter Measurement While Drilling (MWD) and Logging While Drilling (LWD) system for drilling small boreholes using coiled tubing drilling, has been achieved. Two prototype systems have been assembled and tested in the lab. One of the systems has been successfully tested downhole in a conventional rotary drilling environment. Development of the 3 1/8-inch system has also lead to development and commercialization of a slightly larger 3.5-inch diameter system. We are presently filling customer orders for the 3.5-inch system while continuing with commercialization of the 3 1/8-inch system. The equipment developed by this project will be offered for sale to multiple service providers around the world, enabling the more rapid expansion of both coiled tubing drilling and conventional small diameter drilling. The project was based on the reuse of existing technology whenever possible in order to minimize development costs, time, and risks. The project was begun initially by Ultima Labs, at the time a small company ({approx}12 employees) which had successfully developed a number of products for larger oil well service companies. In September, 2006, approximately 20 months after inception of the project, Ultima Labs was acquired by Sondex plc, a worldwide manufacturer of downhole instrumentation for cased hole and drilling applications. The acquisition provided access to proven technology for mud pulse telemetry, downhole directional and natural gamma ray measurements, and surface data acquisition and processing, as well as a global sales and support network. The acquisition accelerated commercialization through existing Sondex customers. Customer demand resulted in changes to the product specification to support hotter (150 C) and deeper drilling (20,000 psi pressure) than originally proposed. The Sondex acquisition resulted in some project delays as the resistivity collar was interfaced to a different MWD system and also as the mechanical design was revised for the new pressure requirements. However, the Sondex acquisition has resulted in a more robust system, secure funding for completion of the project, and more rapid commercialization.

Don Macune

2008-06-30T23:59:59.000Z

477

Distribution of the distance between opposite nodes of random polygons with a fixed knot  

E-Print Network (OSTI)

We examine numerically the distribution function $f_K(r)$ of distance $r$ between opposite polygonal nodes for random polygons of $N$ nodes with a fixed knot type $K$. Here we consider three knots such as $\\emptyset$, $3_1$ and $3_1 \\sharp 3_1$. In a wide range of $r$, the shape of $f_K(r)$ is well fitted by the scaling form of self-avoiding walks. The fit yields the Gaussian exponents $\

Akihisa Yao; Hiroshi Tsukahara; Tetsuo Deguchi; Takeo Inami

2004-03-09T23:59:59.000Z

478

Predictability of Fixed-Job Priority Schedulers on Heterogeneous Multiprocessor Real-Time Systems  

E-Print Network (OSTI)

The multiprocessor Fixed-Job Priority (FJP) scheduling of real-time systems is studied. An important property for the schedulability analysis, the predictability (regardless to the execution times), is studied for heterogeneous multiprocessor platforms. Our main contribution is to show that any FJP schedulers are predictable on unrelated platforms. A convenient consequence is the fact that any FJP schedulers are predictable on uniform multiprocessors.

Cucu-Grosjean, Liliana

2009-01-01T23:59:59.000Z

479

Few body impulse and fixed scatterer approximations for high energy scattering  

E-Print Network (OSTI)

The elastic scattering differential cross section is calculated for proton scattering from $^6$He at 717 MeV, using single scattering terms of the multiple scattering expansion of the total transition amplitude (MST). We analyse the effects of different scattering frameworks, specifically the Factorized Impulse Approximation (FIA) and the Fixed Scatterer (adiabatic) Approximation (FSA) and the uncertainties associated with the use different structure models.

R. Crespo; A. M. Moro; I. J. Thompson

2006-03-02T23:59:59.000Z

480

(Non-)completeness of R-buildings and fixed point theorems  

E-Print Network (OSTI)

We prove two generalizations of results proved by Bruhat and Tits involving metrical completeness and R-buildings. Firstly, we give a generalization of the Bruhat-Tits fixed point theorem also valid for non-complete R-buildings, but with the added condition that the group is finitely generated. Secondly, we generalize a criterion which reduces the problem of completeness to the wall trees of the R-building.

Struyve, Koen

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "assembly fixed seating" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

On inverse problems in electromagnetic field in classical mechanics at fixed energy  

E-Print Network (OSTI)

In this paper, we consider inverse scattering and inverse boundary value problems at sufficiently large and fixed energy for the multidimensional relativistic and nonrelativistic Newton equations in a static external electromagnetic field $(V,B)$, $V\\in C^2,$ $B\\in C^1$ in classical mechanics. Developing the approach going back to Gerver-Nadirashvili 1983's work on an inverse problem of mechanics, we obtain, in particular, theorems of uniqueness.

Alexandre Jollivet

2007-01-04T23:59:59.000Z

482

Inverse scattering at fixed energy for the multidimensional Newton equation in short range radial potentials  

E-Print Network (OSTI)

We consider the inverse scattering problem at fixed and sufficiently large energy for the nonrelativistic and relativistic Newton equation in $\\R^n$, $n \\ge 2$, with a smooth and short range electromagnetic field $(V,B)$. Using results of [Firsov, 1953] or [Keller-Kay-Shmoys, 1956] we obtain a uniqueness result when $B$ is assumed to be zero in a neighborhood of infinity and $V$ is assumed to be spherically symmetric in a neighborhood of infinity.

Alexandre Jollivet

2012-10-24T23:59:59.000Z

483

Improved pyrolysis submodel for the Wen Fixed-Bed Gasifier Program  

Science Conference Proceedings (OSTI)

A generalized model for devolatilization of large coal particles typically encountered in a fixed or moving bed gasifier has been developed. Two models were developed, one which does not consider diffusion of the volatile matter from the coal during devolatilization and the other which does consider diffusion of volatile species through the coal matrix. Both models predict a time-temperature history of the particle in a convective heat transfer environment.

Adesanya, B.A.; Ruffin, Y.

1991-04-01T23:59:59.000Z

484

Improved pyrolysis submodel for the Wen Fixed-Bed Gasifier Program. Final report  

Science Conference Proceedings (OSTI)

A generalized model for devolatilization of large coal particles typically encountered in a fixed or moving bed gasifier has been developed. Two models were developed, one which does not consider diffusion of the volatile matter from the coal during devolatilization and the other which does consider diffusion of volatile species through the coal matrix. Both models predict a time-temperature history of the particle in a convective heat transfer environment.

Adesanya, B.A.; Ruffin, Y.

1991-04-01T23:59:59.000Z

485

Solar tracker motor having a fixed caliper and a translating caliper each with an electromagnetic brake system  

Science Conference Proceedings (OSTI)

Concepts and technologies described herein provide for an accurate and cost-effective method for rotating a solar array disk for tracking the movement of the sun. According to various aspects, a motor includes a fixed caliper and a translating caliper positioned adjacent to one another. Electromagnetically controlled brakes on the translating caliper grip the solar array disk while adjacent, but spaced apart, electromagnets on the fixed caliper and the translating caliper are energized to create an attractive force that pulls the translating caliper with the solar array disk toward the fixed caliper. After reaching the fixed caliper, brakes on the fixed caliper are engaged with the disk, brakes on the translating caliper are released from the disk, and the translating caliper is pushed back to the starting location where the process repeats until the desired rotation is completed.

Rau, Scott James

2013-01-29T23:59:59.000Z

486

Dichotomy Results for Fixed-Point Existence Problems for Boolean Dynamical Systems  

E-Print Network (OSTI)

A complete classification of the computational complexity of the fixed-point existence problem for boolean dynamical systems, i.e., finite discrete dynamical systems over the domain {0, 1}, is presented. For function classes F and graph classes G, an (F, G)-system is a boolean dynamical system such that all local transition functions lie in F and the underlying graph lies in G. Let F be a class of boolean functions which is closed under composition and let G be a class of graphs which is closed under taking minors. The following dichotomy theorems are shown: (1) If F contains the self-dual functions and G contains the planar graphs then the fixed-point existence problem for (F, G)-systems with local transition function given by truth-tables is NP-complete; otherwise, it is decidable in polynomial time. (2) If F contains the self-dual functions and G contains the graphs having vertex covers of size one then the fixed-point existence problem for (F, G)-systems with local transition function given by formulas or...

Kosub, Sven

2008-01-01T23:59:59.000Z

487

Comparison of fixed asymmetrical and symmetrical reflectors for evacuated tube solar receivers  

SciTech Connect

A computer simulation of the relative performance of certain truncated symmetrical and asymmetrical fixed reflector designs for solar energy collection was performed. The comparison was on the basis of annual energy delivered to a circular cylindrical evacuated tube receiver per unit of mirror area, but seasonal load information was also included to determine possible seasonal load matching advantages of one type of collector over another when storage is employed. Circumsolar radiation models based on recent correlations in the literature was included. Major conclusions were that: (1) Annual solar fractions of between 80% and 95% seem to be feasible with a load matching collector used with moderate energy storage, with 80-90% being a likely optimum; (2) CPC reflectors always gave the best annual output performance per unit of mirror area, and the lowest receiver area for situations of constant annual load, regardless of whether the storage is included in the system; (3) Asymmetrical concentrator are more cost-effective for strongly seasonally asymmetrical load patterns; (4) Fixed parabolic systems required much more receiver area than the symmetrical CPC and asymmetrical system investigated; (5) Concentration levels utilizable in fixed systems are higher than previously supposed, with 3.5:1 in an asymmetrical reflector being optimal or nearly optimal for the domestic load pattern used in the study; (6) Using a load matched reflector, the amount of storage required to achieve solar fractions of total thermal energy (space heating, water heating, clothes drying) above 90% in a residence appears to be much lower than previously thought.

Mills, D.R.; Monger, A. (Univ. of Sydney (Australia)); Morrison, G.L. (Univ. of New South Wales, Sydney (Australia))

1994-07-01T23:59:59.000Z

488

Do hierarchical structures assemble best via hierarchical pathways?  

E-Print Network (OSTI)

Hierarchically structured natural materials possess functionalities unattainable to the same components organized or mixed in simpler ways. For instance, the bones and teeth of mammals are far stronger and more durable than the mineral phases from which they are derived because their constituents are organized hierarchically from the molecular scale to the macroscale. Making similarly functional synthetic hierarchical materials will require an understanding of how to promote the self-assembly of structure on multiple lengthscales, without falling foul of numerous possible kinetic traps. Here we use computer simulation to study the self-assembly of a simple hierarchical structure, a square crystal lattice whose repeat unit is a tetramer. Although the target material is organized hierarchically, it self-assembles most reliably when its dynamic assembly pathway consists of the sequential addition of monomers to a single structure. Hierarchical dynamic pathways via dimer and tetramer intermediates are also viable modes of assembly, but result in general in lower yield: these intermediates have a stronger tendency than monomers to associate in ways not compatible with the target structure. In addition, assembly via tetramers results in a kinetic trap whereby material is sequestered in trimers that cannot combine to form the target crystal. We use analytic theory to relate dynamical pathways to the presence of equilibrium phases close in free energy to the target structure, and to identify the thermodynamic principles underpinning optimum self-assembly in this model: 1) make the free energy gap between the target phase and the most stable fluid phase of order kT, and 2) ensure that no other dense phases (liquids or close-packed solids of monomers or oligomers) or fluids of incomplete building blocks fall within this gap.

Thomas K. Haxton; Stephen Whitelam

2012-11-15T23:59:59.000Z

489

Assembly of a Molecular Needle, from the Bottom Up  

NLE Websites -- All DOE Office Websites (Extended Search)

Assembly of a Molecular Needle, Assembly of a Molecular Needle, from the Bottom Up Assembly of a Molecular Needle, from the Bottom Up Print Wednesday, 21 December 2005 00:00 Many pathogenic bacteria use a specialized secretion system to inject virulence proteins directly into the cells they infect. The injected proteins, by mimicking host-cell mechanisms, can then subvert normal cellular function. The type III secretion system (TTSS) is a sophisticated protein complex with an overall shape similar to a hypodermic needle. More than twenty unique types of proteins are required for its assembly, most of which are found among a wide variety of animal as well as plant pathogens. Electron microscopy has sketched the broad outlines of TTSS structure, but it does not have sufficient resolution to reveal the details required to understand, and eventually inhibit, the needle's function. At the ALS, researchers from Canada and the U.S. performed crystallographic studies of EscJ, the protein that makes up the needle's ring-shaped base. Their analysis of the EscJ ring not only presents a snapshot of one of the earliest structures generated in the TTSS assembly process, but also reveals features indicative of its role as the molecular platform for subsequent construction of the secretion apparatus.

490

Self-Assembly of Polymer Nano-Elements on Sapphire  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to produce perfect surfaces over large areas. Recently, a group of researchers used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains. Grazing-incidence small-angle x-ray scattering (GISAXS) at ALS Beamline 7.3.3 verified the arrays' quasi long-range crystalline order over arbitrarily large wafer surfaces. It's expected that this new method of producing highly ordered macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries and perhaps others, such as photovoltaics.

491

Self-Assembly of Polymer Nano-Elements on Sapphire  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to