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1

PRESS SHOP. SEVEN BLISS PRESSES STAMP OUT A VARIETY OF ...  

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

PRESS SHOP. SEVEN BLISS PRESSES STAMP OUT A VARIETY OF CARTRIDGE AND SHELL CASINGS. THIS DEPARTMENT WAS TRANSFORMED FROM A MONEY-LOSING OPERATION TO A PROFIT CENTER UNDER THE FIRST WORKER-MANAGED QUALITY CIRCLE IN THE PLANT. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

2

Evolutions of Advanced Stamping CAE — Technology Adventures and Business Impact on Automotive Dies and Stamping  

NASA Astrophysics Data System (ADS)

In the past decade, sheet metal forming and die development has been transformed to a science-based and technology-driven engineering and manufacturing enterprise from a tryout-based craft. Stamping CAE, especially the sheet metal forming simulation, as one of the core components in digital die making and digital stamping, has played a key role in this historical transition. The stamping simulation technology and its industrial applications have greatly impacted automotive sheet metal product design, die developments, die construction and tryout, and production stamping. The stamping CAE community has successfully resolved the traditional formability problems such as splits and wrinkles. The evolution of the stamping CAE technology and business demands opens even greater opportunities and challenges to stamping CAE community in the areas of (1) continuously improving simulation accuracy, drastically reducing simulation time-in-system, and improving operationalability (friendliness), (2) resolving those historically difficult-to-resolve problems such as dimensional quality problems (springback and twist) and surface quality problems (distortion and skid/impact lines), (3) resolving total manufacturability problems in line die operations including blanking, draw/redraw, trim/piercing, and flanging, and (4) overcoming new problems in forming new sheet materials with new forming techniques. In this article, the author first provides an overview of the stamping CAE technology adventures and achievements, and industrial applications in the past decade. Then the author presents a summary of increasing manufacturability needs from the formability to total quality and total manufacturability of sheet metal stampings. Finally, the paper outlines the new needs and trends for continuous improvements and innovations to meet increasing challenges in line die formability and quality requirements in automotive stamping.

Wang, Chuantao (C. T.)

2005-08-01

3

Evolutions of Advanced Stamping CAE -- Technology Adventures and Business Impact on Automotive Dies and Stamping  

SciTech Connect

In the past decade, sheet metal forming and die development has been transformed to a science-based and technology-driven engineering and manufacturing enterprise from a tryout-based craft. Stamping CAE, especially the sheet metal forming simulation, as one of the core components in digital die making and digital stamping, has played a key role in this historical transition. The stamping simulation technology and its industrial applications have greatly impacted automotive sheet metal product design, die developments, die construction and tryout, and production stamping. The stamping CAE community has successfully resolved the traditional formability problems such as splits and wrinkles. The evolution of the stamping CAE technology and business demands opens even greater opportunities and challenges to stamping CAE community in the areas of (1) continuously improving simulation accuracy, drastically reducing simulation time-in-system, and improving operationalability (friendliness) (2) resolving those historically difficult-to-resolve problems such as dimensional quality problems (springback and twist) and surface quality problems (distortion and skid/impact lines) (3) resolving total manufacturability problems in line die operations including blanking, draw/redraw, trim/piercing, and flanging, and (4) overcoming new problems in forming new sheet materials with new forming techniques. In this article, the author first provides an overview of the stamping CAE technology adventures and achievements, and industrial applications in the past decade. Then the author presents a summary of increasing manufacturability needs from the formability to total quality and total manufacturability of sheet metal stampings. Finally, the paper outlines the new needs and trends for continuous improvements and innovations to meet increasing challenges in line die formability and quality requirements in automotive stamping.

Wang Chuantao [General Motors Corp. Manufacturing Engineering, Die Center, 2000 Centerpoint, Pontiac, MI 48341 (United States)

2005-08-05

4

Prediction of press\\/die deformation for an accurate manufacturing of drawing dies  

Microsoft Academic Search

In this work a methodological scheme for a reduction of both the try-out and lead-time of complex dies is presented. The finite\\u000a element simulation of the system press\\/tool behaviour along the stamping process results in criteria for the best design of\\u000a high-cost dies\\/punches. Modifications of the main geometry, components and functional parameters are so recommended. Die deflection\\u000a during the pressing

D. Del Pozo; L. N. López de Lacalle; J. M. López; A. Hernández

2008-01-01

5

7. VIEW OF HYDRAULIC HAMMER STAMPING PRESS ON SIDE A ...  

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

7. VIEW OF HYDRAULIC HAMMER STAMPING PRESS ON SIDE A OF BUILDING 883. THIS TYPE OF PRESS WAS USED FOR BOTH STAINLESS STEEL AND FOR DEPLETED URANIUM. (7/2/86) - Rocky Flats Plant, Uranium Rolling & Forming Operations, Southeast section of plant, southeast quadrant of intersection of Central Avenue & Eighth Street, Golden, Jefferson County, CO

6

Sheet metal stamping die design for warm forming  

DOEpatents

In metal stamping dies, by taking advantage of improved material flow by selectively warming the die, flat sections of the die can contribute to the flow of material throughout the workpiece. Local surface heating can be accomplished by placing a heating block in the die. Distribution of heating at the flat lower train central regions outside of the bend region allows a softer flow at a lower stress to enable material flow into the thinner, higher strain areas at the bend/s. The heating block is inserted into the die and is powered by a power supply.

Ghosh, Amit K. (Ann Arbor, MI)

2003-04-22

7

Automation of a stamping press using sequential hydraulic manipulators  

Microsoft Academic Search

The economic and technical feasibility of using pneumatic manipulation to automate a metal sheet stamping press was tested on a 2000 kN commercial machine. Results show that the pneumatic system is slower and less flexible than electromechanical methods. However, costs are lower and the system is interesting in cases of large series of work on slower machines, on curved pieces,

J. P. Devimeux; V. Escalup; B. Hoessler; M. Orriols; R. Thomas

1983-01-01

8

A Hybrid Intelligent System for Stamping Process Planning in Progressive Die Design  

E-print Network

This paper presents an intelligent, hybrid system for stamping process planning in progressive die design. The system combines the flexibility of blackboard architecture with case-based reasoning. The hybrid system has the ...

Zhang, W.Y.

9

A framework for development of an intelligent system for design and manufacturing of stamping dies  

NASA Astrophysics Data System (ADS)

An integration of computer aided design (CAD), computer aided process planning (CAPP) and computer aided manufacturing (CAM) is required for development of an intelligent system to design and manufacture stamping dies in sheet metal industries. In this paper, a framework for development of an intelligent system for design and manufacturing of stamping dies is proposed. In the proposed framework, the intelligent system is structured in form of various expert system modules for different activities of design and manufacturing of dies. All system modules are integrated with each other. The proposed system takes its input in form of a CAD file of sheet metal part, and then system modules automate all tasks related to design and manufacturing of stamping dies. Modules are coded using Visual Basic (VB) and developed on the platform of AutoCAD software.

Hussein, H. M. A.; Kumar, S.

2014-07-01

10

On the die face design for stamping an automotive engine hood  

NASA Astrophysics Data System (ADS)

The die face design for stamping an engine hood was examined in the present study using both the finite element analysis and the experimental approach. Since the engine hood is mainly manufactured in the drawing operation, the die addendum design is the key to the success of manufacturing a defect free product. In order to analyze the addendum design, the existing die addendum designs corresponding to those engine hoods were reviewed first and the design parameters were established. The preliminary study was then performed to determine favorable operation conditions including the suitable stamping die angle, blank-holder surface shape, and die open line. The optimum design for the die addendum face was then investigated with the use of finite element simulations. The effects of the design parameters constructed in the present study on the occurrence of the defects were examined and a systematic design guideline was proposed. In order to validate the proposed die design, the actual stamping tooling was manufactured according to the finite element analysis and the engine hoods were produced. The part shape, thickness distribution, and the stretch at the central region of the production part were compared with those obtained from the finite element simulations. The consistent agreement between the product parts and the simulation results confirms the validity of the design guide proposed in the present study for stamping an engine hood.

Chen, Ming-Zhi; Chen, Fuh-Kuo; Wang, Shi-Wei; Lin, Ching-I.

2010-06-01

11

Experimental and Numerical Studies on the Formability of Materials in Hot Stamping and Cold Die Quenching Processes  

Microsoft Academic Search

Formability of steel and aluminium alloys in hot stamping and cold die quenching processes is studied in this research. Viscoplastic-damage constitutive equations are developed and determined from experimental data for the prediction of viscoplastic flow and ductility of the materials. The determined unified constitutive equations are then implemented into the commercial Finite Element code Abaqus\\/Explicit via a user defined subroutine,

N. Li; M. S. Mohamed; J. Cai; J. Lin; D. Balint; T. A. Dean

2011-01-01

12

Experimental and Numerical Studies on the Formability of Materials in Hot Stamping and Cold Die Quenching Processes  

SciTech Connect

Formability of steel and aluminium alloys in hot stamping and cold die quenching processes is studied in this research. Viscoplastic-damage constitutive equations are developed and determined from experimental data for the prediction of viscoplastic flow and ductility of the materials. The determined unified constitutive equations are then implemented into the commercial Finite Element code Abaqus/Explicit via a user defined subroutine, VUMAT. An FE process simulation model and numerical procedures are established for the modeling of hot stamping processes for a spherical part with a central hole. Different failure modes (failure takes place either near the central hole or in the mid span of the part) are obtained. To validate the simulation results, a test programme is developed, a test die set has been designed and manufactured, and tests have been carried out for the materials with different forming rates. It has been found that very close agreements between experimental and numerical process simulation results are obtained for the ranges of temperatures and forming rates carried out.

Li, N.; Mohamed, M. S.; Cai, J.; Lin, J.; Balint, D.; Dean, T. A. [Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ (United Kingdom)

2011-05-04

13

Experimental and Numerical Studies on the Formability of Materials in Hot Stamping and Cold Die Quenching Processes  

NASA Astrophysics Data System (ADS)

Formability of steel and aluminium alloys in hot stamping and cold die quenching processes is studied in this research. Viscoplastic-damage constitutive equations are developed and determined from experimental data for the prediction of viscoplastic flow and ductility of the materials. The determined unified constitutive equations are then implemented into the commercial Finite Element code Abaqus/Explicit via a user defined subroutine, VUMAT. An FE process simulation model and numerical procedures are established for the modeling of hot stamping processes for a spherical part with a central hole. Different failure modes (failure takes place either near the central hole or in the mid span of the part) are obtained. To validate the simulation results, a test programme is developed, a test die set has been designed and manufactured, and tests have been carried out for the materials with different forming rates. It has been found that very close agreements between experimental and numerical process simulation results are obtained for the ranges of temperatures and forming rates carried out.

Li, N.; Mohamed, M. S.; Cai, J.; Lin, J.; Balint, D.; Dean, T. A.

2011-05-01

14

Manufacture of die casting dies by hot isostatic pressing. CRADA final report  

SciTech Connect

The reason for this Cooperative Research and Development Agreement (CRADA) between the Oak Ridge National Laboratory (ORNL) and Doehler-Jarvis was to investigate the manufacture die-casting dies with internal water-cooling lines by hot-isostatic pressing (HIPing) of H13 tool steel powder. The use of HIPing will allow the near-net-shape manufacture of dies and the strategic placement of water-cooling lines during manufacture. The production of near-net-shape dies by HIPing involves the generation of HIPing diagrams, the design of the can that can be used for HIPing a die with complex details, strategic placement of water-cooling lines in the die, computer modeling to predict movement of the water lines during HIPing, and the development of strategies for placing water lines in the appropriate locations. The results presented include a literature review, particle analysis and characterization of H13 tool steel powder, and modeling of the HIPing process.

Viswanathan, S.; Ren, W.; Luk, K. [Oak Ridge National Lab., TN (United States); Brucher, H.G. [Doehler-Jarvis, Toledo, OH (United States)

1998-09-01

15

Solid explosive plane-wave lenses pressed-to-shape with dies  

SciTech Connect

Solid-explosive plane-wave lenses 1", 2" and 4¼" in diameter have been mass-produced from components pressed-to-shape with aluminum dies. The method used to calculate the contour between the solid plane-wave lens components pressed-to-shape with the dies is explained. The steps taken to press, machine, and assemble the lenses are described. The method of testing the lenses, the results of those tests, and the corrections to the dies are reviewed. The work on the ½", 8", and 12" diameter lenses is also discussed.

Olinger, B.

2007-11-01

16

Experimental investigation on the performance of an improved equal channel angular pressing die  

NASA Astrophysics Data System (ADS)

A major problem in Equal Channel Angular Pressing is die design. Friction plays an important role in the extrusion process. In the present work, Aluminium 6082 alloy was processed through a modified ECAP die originally proposed by Mathieu et al. in 2004 [1] and the performance of the die was analyzed. The channel angle was phi=90° and corner angle ?=20°. Mechanical properties, micro hardness measurement and crystalline size (D) were measured from the extruded specimen for both the conventional and new die designs. It has been found that the new die samples displayed better results than the conventional ones. The newly designed die reduced the effect of friction on the work piece, it increased the tensile strength, the hardness of the material and achieved better grain refinement.

Surendarnath, S.; Sankaranarayanasamy, K.; Ravisankar, B.

2014-08-01

17

Process planning and NC-code generation in manufacturing of press dies for production of car bodies  

Microsoft Academic Search

This paper presents a process planning system that generates process plans and NC codes for machining of press dies, which are used in manufacturing the body panels of cars. This system consists of three modules: a macro-process planning system that generates process plans for major parts of press dies; an operation planning system that generates operation plans and NC codes

Dongmok Sheen; Chang Ho Lee; Sang Do Noh; Kiwoo Lee

2004-01-01

18

Dependence of charge material temperature on die temperature during uniaxial hot pressing  

SciTech Connect

The temperature response of several hot press dies and their charge materials were monitored from room temperature to an elevated temperature range. Induction heated TZM dies, and resistance heated TZM, silicon carbides, and alumina dies were investigated. From the collected data, equations were derived which can be used to predict the charge temperature based on direct measurement of the die temperature. With induction heating, predicting in the 600/sup 0/ to 1300/sup 0/C range are hindered by large variations in the data. However, at 1400/sup 0/ to 1700/sup 0/C more precise predictions are possible. With resistance heating, highly precise predictions can be made throughout the 600/sup 0/ to 1200/sup 0/C range. 4 refs., 5 figs., 5 tabs.

Moore, R.H.; Easterling, R.G.; Hellmann, J.R.

1985-08-01

19

Prediction of Blank Holder Force in Stamping Using Finite Element Analysis  

Microsoft Academic Search

Introduction of multiple point cushion technology in stamping press has provided an additional degree of freedom to improve the formability of the materials by changing the blank holder\\/binder\\/cushion force in space\\/location and in stroke during the process. However, this advanced capacity of die cushion is being underutilized in production because it is difficult to estimate the force required in each

Hariharasudhan Palaniswamy; Arun Kumar Thandapani; Srikanth Kulukuru; Taylan Altan

2004-01-01

20

Synchronized time stamp support  

SciTech Connect

New software has been added to IOC core to maintain time stamps. The new software has the ability to maintain time stamps over all IOCs on a network. The purpose of this paper is to explain how EPICS will synchronize the time stamps. In addition, this paper will explain how to configure and use the new EPICS time stamp support software.

Kowalkowski, J.

1994-02-16

21

Effects of Metal Particles Decoration on n-Type Chalcogenides Processed by Open Die Pressing  

NASA Astrophysics Data System (ADS)

The effects of copper particles dispersed into Bi1.9Sb0.1Te2.85Se0.15 nanopowders and sintered by open die pressing (ODP) have been investigated. Submicrometric copper particles were obtained by decomposing copper acetate molecules dispersed into chalcogenides nanopowders. The acetate powders were decomposed during the sintering process at 390 °C obtaining a fine dispersion of copper particles with dimensions in the order of 500 nm. Contents up to 0.2 wt.% of copper were investigated. ODP, previously introduced as a forming process for sintering and texturing p-type (Bi0.2Sb0.8)2Te3 nanopowders, has been applied to n-type chalcogenide: the mixed alloy nanopowders and copper acetate were compacted inside a metallic protective shell and fast pressed between two heated plates, keeping the composite under load for sintering. ODP processing ensures complete consolidation of nanopowders and material texturing with the basal (00 l) planes of the hexagonal crystal cell oriented parallel to the plates. The X-ray diffraction pattern shows an orientation factor, f, obtained by the Lotgering method, up to 64 %. Thermoelectric performance of the samples was measured by the Harman method in the range of 20-170 °C. Figure of merit ( ZT) behavior with temperature was improved in copper-dispersed samples showing a shift of the maximum value at higher temperatures. This effect can be mainly associated with an improvement of electrical conductivity, due to the presence of the copper particles.

Fanciulli, C.; Codecasa, M.; Passaretti, F.; Vasilevskiy, D.

2014-06-01

22

DUCK STAMPS WILDLIFE REFUGES  

E-print Network

. In this category was the National Elk Refuge in Jackson Hole, Wyo. Cover: Design for the first Duck Stamp. OppositeDUCK STAMPS AND WILDLIFE REFUGES UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE

23

Food Stamps: A Bibliography.  

ERIC Educational Resources Information Center

A voluminous body of literature exists on the topic of food stamps including the administration of the federal and state programs and the question of abuses and fraud. This bibliography describes a portion of that material in print. An introduction provides general information and a chronology of the food stamp program and comments on the place of…

Cameron, Colin; And Others

24

2.NBT Counting Stamps  

NSDL National Science Digital Library

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: The post office packages stamps like this: 10 stamps in each strip. 10 strips of 10 in each sheet. Yesterday Mike saw 4 full sheets, 7 strips, and 2 ex...

25

Food Stamps and Nutrition.  

ERIC Educational Resources Information Center

The economics of food stamps - the America's major food assistance program is investigated in order to answer the following questions: (1) whether malnutrition be solved by food supplements or cash allowances; (2) what the benefits to recipients are; (3) whether eligibility requirements permit participation by the needy and exclude higher income…

Clarkson, Kenneth W.

26

Rapid thermal processing by stamping  

DOEpatents

A rapid thermal processing device and methods are provided for thermal processing of samples such as semiconductor wafers. The device has components including a stamp (35) having a stamping surface and a heater or cooler (40) to bring it to a selected processing temperature, a sample holder (20) for holding a sample (10) in position for intimate contact with the stamping surface; and positioning components (25) for moving the stamping surface and the stamp (35) in and away from intimate, substantially non-pressured contact. Methods for using and making such devices are also provided. These devices and methods allow inexpensive, efficient, easily controllable thermal processing.

Stradins, Pauls; Wang, Qi

2013-03-05

27

Simple die pressing for making artificial holes in single-grain Gd1.5Ba2Cu3O7-y superconductors  

NASA Astrophysics Data System (ADS)

The presence of artificial holes in single-grain REBa2Cu3O7-y (RE123, RE: rare-earth elements) bulk superconductors can facilitate oxygen diffusion into superconducting grains through the increased surface area. In addition to the enhancement of oxygen diffusion, the mechanical properties and thermal conductivity of bulk superconductors can be improved by filling holes with a metallic conductive phase. This study presents a new and simple hole-making process for single-grain RE123 bulk superconductors. Artificial holes 3 or 5 mm in diameter were made for Gd1.5Ba2Cu3O7-y (Gd1.5) powder compacts prior to the sintering/melt growth process using specially designed pressing dies. The die pressing neither induced cracking in powder compacts nor influenced thermal procedures for the Gd123 growth. Single-grain Gd1.5 bulk superconductors with holes were successfully fabricated by a top-seeded melt growth (TSMG) process using Gd1.5 powder compacts with holes. The die pressing was proven as a time-saving process in comparison with the conventional method which makes holes in sintered or melt-processed hard bodies by mechanical drilling. The detailed fabrication process of single-grain Gd1.5 bulk superconductor with holes, magnetic levitation forces, and magnetic flux density, estimated for the single-grain Gd123 bulk superconductors with holes, are reported.

Kim, K.-M.; Park, S.-D.; Jun, B.-H.; Ko, T. K.; Kim, C.-J.

2012-10-01

28

Metrology on stamps  

NASA Astrophysics Data System (ADS)

Philately could be an effective aid in the teaching not only of physics but also of metrology. Indeed, a great number of countries all over the world have issued many stamps on metrology, enhancing both the importance of the International System of Units and of the scientists after whom units have been named. We have exploited this theme to show how to develop a new strategy with the aim of creating a deeper interest in our science students.

Fazio, Michelangelo; Rota, Susy L.

1995-09-01

29

78 FR 10201 - Proposed Information Collection; Electronic Duck Stamp Program  

Federal Register 2010, 2011, 2012, 2013

...Proposed Information Collection; Electronic Duck Stamp Program AGENCY: Fish and Wildlife...hunting and conservation stamp (Federal Duck Stamp) annually. The stamps are a vital...dollar generated by the sale of Federal Duck Stamps goes directly to purchase or...

2013-02-13

30

Applying STAMP in Accident Analysis  

NASA Technical Reports Server (NTRS)

Accident models play a critical role in accident investigation and analysis. Most traditional models are based on an underlying chain of events. These models, however, have serious limitations when used for complex, socio-technical systems. Previously, Leveson proposed a new accident model (STAMP) based on system theory. In STAMP, the basic concept is not an event but a constraint. This paper shows how STAMP can be applied to accident analysis using three different views or models of the accident process and proposes a notation for describing this process.

Leveson, Nancy; Daouk, Mirna; Dulac, Nicolas; Marais, Karen

2003-01-01

31

3.OA The Stamp Collection  

NSDL National Science Digital Library

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Masha had $120$ stamps. First, she gave her sister half of the stamps and then she used three to mail letters. How many stamps does Masha have left?...

32

Evaluation of stamping lubricants at various temperature levels using the ironing test  

Microsoft Academic Search

Lubricants are employed in stamping operations in order to (a) improve the material flow into the die cavity, (b) reduce wear and galling in the die and (c) obtain good surface finish of the part. Process conditions such as high temperatures and pressures could cause the lubricant to fail, thus resulting in galling or tearing of the part, damage to

Shrinidhi Chandrasekharan; Hariharasudhan Palaniswamy; Nitin Jain; Gracious Ngaile; Taylan Altan

2005-01-01

33

The investigation of die-pressing and sintering behavior of ITP CP-Ti and Ti-6Al-4V powders  

SciTech Connect

This paper investigated the die-pressing and sintering behavior of the low-cost CP-Ti and Ti-6Al- 4V powders made by the Armstrong Process . The Armstrong powders have an irregular coral like, dendritic morphology, with a dendrite size of approximately 2-5 m. As-received as well as milled powders were uniaxially pressed at designated pressures up to 690 MPa to form disk samples with different aspect ratios. In the studied pressure range, an empirical powder compaction equation was applied to linearize the green density pressure relationship, and powder compaction parameters were obtained. The Armstrong Ti-64 powder exhibited a significantly higher sinterability than the CP-Ti powder. This was explained to be due to the higher diffusivity of V at the sintering temperature. The Ti-64 samples with a green density of 71.0% increased to 99.6% after sintering at 1300oC for 1 hour. An ex-situ technique was used to track the powder morphology change before and after sintering.

Chen, Wei [ORNL; Yamamoto, Yukinori [ORNL; Peter, William H [ORNL; Clark, Michael B [ORNL; Nunn, Stephen D [ORNL; Kiggans, Jim [ORNL; Muth, Thomas R [ORNL; Blue, Craig A [ORNL; Williams, James C [Ohio State University; Fuller, Brian [International Titanium Powder; Akhtar, Kamal [International Titanium Powder

2012-01-01

34

Direct imprint of nanostructures in metals using porous anodic alumina stamps.  

PubMed

A single-step nanoimprint process for direct patterning of metallic nanostructures at room temperature is described. Porous anodic alumina (PAA) is used for stamps and the structure can be optimized by adjusting the PAA fabrication parameters. The periodic hexagonal cells on the PAA stamps are transferred to the metals by mechanically pressing the stamps into the substrate, and various metal nanopatterns with different hardnesses and elastic moduli such as Sn, Zn, Al, Ag, Mg and Cu are fabricated. Metal nanopits or nanoislands with well defined spacing between 75 and 150 nm can be readily produced using the metal direct imprinting process. The mechanical properties of the PAA stamps and effects of imprinting pressure on the height of the transferred patterns are also investigated. PMID:23723164

Lang, Xianzhong; Qiu, Teng; Long, Kailin; Han, Di; Nan, Haiyan; Chu, Paul K

2013-06-28

35

Heated die facilitates tungsten forming  

NASA Technical Reports Server (NTRS)

Tungsten forming in a press brake employs a bottom die assembly with a heating manifold between two water-cooled die sections. The manifold has hydrogen-oxygen burners spaced along its length for even heat during forming.

Chattin, J. H.; Haystrick, J. E.; Laughlin, J. C.; Leidy, R. A.

1966-01-01

36

27 CFR 479.162 - Stamps authorized.  

Code of Federal Regulations, 2013 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.162 Stamps authorized....

2013-04-01

37

27 CFR 479.162 - Stamps authorized.  

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.162 Stamps authorized....

2014-04-01

38

27 CFR 479.162 - Stamps authorized.  

Code of Federal Regulations, 2010 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.162 Stamps authorized....

2010-04-01

39

27 CFR 479.162 - Stamps authorized.  

Code of Federal Regulations, 2011 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.162 Stamps authorized....

2011-04-01

40

27 CFR 479.162 - Stamps authorized.  

Code of Federal Regulations, 2012 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.162 Stamps authorized....

2012-04-01

41

Reciprocating pellet press  

DOEpatents

A machine for pressing loose powder into pellets using a series of reciprocating motions has an interchangeable punch and die as its only accurately machines parts. The machine reciprocates horizontally between powder receiving and pressing positions. It reciprocates vertically to press, strip and release a pellet.

Jones, Charles W. (Seminole, FL)

1981-04-07

42

46 CFR 53.10-10 - Certification by stamping.  

Code of Federal Regulations, 2010 CFR

...DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING HEATING BOILERS Tests, Inspection, Stamping, and Reporting (Article... § 53.10-10 Certification by stamping. Stamping of heating boilers shall be as indicated in HG-530 of section...

2010-10-01

43

Advancements in tailored hot stamping simulations: Cooling channel and distortion analyses  

NASA Astrophysics Data System (ADS)

Hot stamped components have been widely used in the automotive industry in the last decade where ultra high strength is required. These parts, however, may not provide sufficient toughness to absorb crash energy. Therefore, these components are "tailored" by controlling the microstructure at various locations. Simulation of tailored hot stamped components requires more detailed analysis of microstructural changes. Furthermore, since the part is not uniformly quenched, severe distortion can be observed. CPF, together with ESI have developed a number of techniques to predict the final properties of a tailored part. This paper discusses the recent improvements in modeling distortion and die design with cooling channels.

Billur, Eren; Wang, Chao; Bloor, Colin; Holecek, Martin; Porzner, Harald; Altan, Taylan

2013-12-01

44

Making Sense of Oil Stamp Saving Schemes  

Microsoft Academic Search

An increasing number of households in Northern Ireland has started to collect oil stamps in recent years - i.e. small pieces of paper which can be purchased at specified outlets, collected on an oil stamps savings card, and used to pay in full or part for one's oil bill. In this paper, we explore why this is. After ruling out

P. B. Brutscher

2012-01-01

45

Volcanology by Courier: Science in Stamps.  

ERIC Educational Resources Information Center

Summarized are five activities involving collection of postage stamps picturing volcanoes or related scenes for use as part of or at the conclusion of the study of volcanoes. Activity topics include volcanic features, location of volcanoes, related land features where volcanoes are not located, and making one's own volcano stamps. (DS)

Glenn, William H.

1981-01-01

46

Springback Prediction, Compensation and Correlation for Automotive Stamping  

NASA Astrophysics Data System (ADS)

To reduce weight and increase fuel efficiency and safety, more and more automotive sheet stamping parts are being made of aluminum and high strength steels. Forming of such materials encounters not just reduced formability but also dimensional quality problems. Springback prediction accuracy and compensation effectiveness have been the major challenge to die development, construction and tryout. In this paper, the factors that affect the accuracy of springback prediction are discussed, which includes the effect of material models, the selection of element size, and the contact algorithms. Springback predictions of several automotive aluminum and high strength panels are compared with measurement data. The examples show that the prediction correlates with measurement data in both springback trend and magnitude. The effect of springback on final product can be reduced or eliminated through process control and die face compensation. The process control method involves finding the root causes of springback and eliminating them through process modification. The geometrical compensation of die surface is a direct way to eliminate the springback effect. The global scaling compensation method is normally limited to parts with relatively small springback. For large springback and twisting, a new approach is discussed, which takes into account of the effect of deformation and springback history. The compensation is achieved iteratively by solving a system of non-linear equations. Production dies were cut to the compensated surface, which shows that the die compensation is an efficient way to reduce springback-induced geometry deviation.

Xu, Siguang; Zhao, Kunmin; Lanker, Terry; Zhang, Jimmy; Wang, C. T.

2005-08-01

47

The Effect of the Food Stamp Program on Nutrient Intake  

Microsoft Academic Search

Receipt of food stamps is often observed to be positively correlated with intake of nutrients. However, this observed fact could be the result of self-selection into the food stamp program by those individuals who are more interested in maintaining good nutrition. The authors observe that, controlling for participation in the food stamp program, nutrition is negatively affected by food stamp

J. S. Butler; Jennie E. Raymond

1996-01-01

48

Holography and philately: postage stamps with embossed holograms  

NASA Astrophysics Data System (ADS)

Collecting postage stamps is a worldwide business and hobby, which begun not long after national post offices started to issue stamps. The very first definitive stamp with a hologram was issued in Austria in 1988. Since then, about 40 countries have issued holographic stamps and the total amount of different postal items with holograms is about 100. In 1999, there were more holographic stamps issued than in any previous years. A chronological review of stamps issued with embossed holograms is given. A detailed description of each stamp is provided with photographs of all postage stamps and souvenir sheets. The use of holograms on stamps seems to be more of a new and attractive decoration rather than a security measure. Holographic stamps have already become a new philatelic topical field.

Bjelkhagen, Hans I.

2000-10-01

49

Usage and Recall of the Food Stamp Office Resource Kit (FSORK) by Food Stamp Applicants in 4 California Counties  

ERIC Educational Resources Information Center

Objective: To evaluate recall and usage of the Food Stamp Office Resource Kit (FSORK), a set of nutrition education materials designed for use in food stamp offices. Design: Client intercept exit surveys, an environmental scan, and individual observations of clients in the food stamp office. Setting: Four food stamp offices in California.…

Ghirardelli, Alyssa; Linares, Amanda; Fong, Amy

2011-01-01

50

Supramolecular nano-stamping : analyzing market potential  

E-print Network

An analysis was carried out on the process of Supramolecular Nano-Stamping (SuNS) in order to determine whether or not the science involved has market potential in the DNA microarray industry. This industry is rapidly ...

DePalma, Christina Maria

2005-01-01

51

Nanostructured Crosslinkable Micropatterns by Amphiphilic Dendrimer Stamping  

E-print Network

Nanostructured Crosslinkable Micropatterns by Amphiphilic Dendrimer Stamping Neeraj Kohli,1 Petar R Keywords: amphiphilic; crosslinking; dendrimers; microcontact printing; spin self-assembly Introduction, amphiphilic films with hydrophobic biological molecules can yield biomimetic interfaces able to reproduce

52

Recent Innovations in Hyperworks® Stamping Simulation Technology  

Microsoft Academic Search

HyperForm® and RADIOSS® which are components of the Altair® HyperWorks® software suite have been used for stamping simulation for the last fifteen years. Many features specialized for explicit stamping simulation to accurately capture the material behavior and contact phenomena have been developed over the years. Over the recent years several new innovative enhancements have been made to HyperForm and RADIOSS

Subir Roy; Lionel Morancay; Erwan Beauchesne; Hariharasudhan Palaniswamy

2011-01-01

53

25 CFR 304.5 - Dies to identify tribe.  

...304.5 Section 304.5 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER, USE OF GOVERNMENT MARK § 304.5 Dies to identify tribe. Dies are marked with name of tribe. A Navajo stamp will...

2014-04-01

54

25 CFR 304.5 - Dies to identify tribe.  

Code of Federal Regulations, 2013 CFR

...304.5 Section 304.5 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER, USE OF GOVERNMENT MARK § 304.5 Dies to identify tribe. Dies are marked with name of tribe. A Navajo stamp will...

2013-04-01

55

25 CFR 304.5 - Dies to identify tribe.  

Code of Federal Regulations, 2011 CFR

...304.5 Section 304.5 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER, USE OF GOVERNMENT MARK § 304.5 Dies to identify tribe. Dies are marked with name of tribe. A Navajo stamp will...

2011-04-01

56

25 CFR 304.5 - Dies to identify tribe.  

Code of Federal Regulations, 2012 CFR

...304.5 Section 304.5 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER, USE OF GOVERNMENT MARK § 304.5 Dies to identify tribe. Dies are marked with name of tribe. A Navajo stamp will...

2012-04-01

57

Investigation of deformation and failure features in hot stamping of AA6082: Experimentation and modelling  

Microsoft Academic Search

This paper introduces a set of coupled viscoplastic constitutive equations for deformation and damage in hot stamping and cold die quenching of AA6082 panel parts. The equation set can be used to predict viscoplastic flow and plasticity-induced damage of AA6082 under hot forming conditions. Deformation and damage depend upon a coupled set of evolving internal state variables, e.g. dislocation density,

Mohamed S. Mohamed; Alistair D. Foster; Jianguo Lin; Daniel S. Balint; Trevor A. Dean

58

Pokemon Cards and the Shortest Common Superstring Mark Stamp Austin E Stamp  

E-print Network

Pok´emon Cards and the Shortest Common Superstring Mark Stamp Austin E Stamp June 12, 2003 Abstract Evidence is presented that certain sequences of Pok´emon cards are determined by selecting consecutive (SCS), i.e., the shortest string that contains each of the Pok´emon card sequences as a consecutive

Stamp, Mark

59

Direct drive digital servo press with high parallel control  

NASA Astrophysics Data System (ADS)

Direct drive digital servo press has been developed as the university-industry joint research and development since 1998. On the basis of this result, 4-axes direct drive digital servo press has been developed and in the market on April of 2002. This servo press is composed of 1 slide supported by 4 ball screws and each axis has linearscale measuring the position of each axis with high accuracy less than ?m order level. Each axis is controlled independently by servo motor and feedback system. This system can keep high level parallelism and high accuracy even with high eccentric load. Furthermore the 'full stroke full power' is obtained by using ball screws. Using these features, new various types of press forming and stamping have been obtained by development and production. The new stamping and forming methods are introduced and 'manufacturing' need strategy of press forming with high added value and also the future direction of press forming are also introduced.

Murata, Chikara; Yabe, Jun; Endou, Junichi; Hasegawa, Kiyoshi

2013-12-01

60

Design of Channel Type Indirect Blank Holder for Prevention of Wrinkling and Fracture in Hot Stamping Process  

NASA Astrophysics Data System (ADS)

The hot stamping process has been used in the automotive industry to reduce the weight of the body-in-white and to increase passenger safety via improved crashworthiness. In this study, a new form die with a simple structure that can prevent defects such as wrinkle and fracture is proposed for the manufacture of hot stamped components. The wrinkling at the flange cannot be eliminated when using a conventional form die. It is known that the initiation of wrinkling is influenced by many factors such as the mechanical properties of the sheet material, geometry of the sheet and tool, and other process parameters, including the blank holding force (BHF) and the contact conditions. In this research, channel type indirect blank holder (CIBH) is introduced to replace general blank holder for manufacturing the hot stamped center pillar. First, we investigate the tension force acting on the blank according to the channel shapes. We determine the appropriate range by comparing the tension force with the upper and lower BHFs in a conventional stamping process. We then use FE-analysis to study the influence of the slope angle and corner radius of the channel on the formability. Finally, the center pillar is manufactured using the form die with the selected channel.

Choi, Hong-seok; Ha, Se-yoon; Cha, Seung-hoon; kang, Chung-gil; Kim, Byung-min

2011-08-01

61

27 CFR 479.163 - Reuse of stamps prohibited.  

Code of Federal Regulations, 2011 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.163 Reuse of stamps...

2011-04-01

62

27 CFR 479.163 - Reuse of stamps prohibited.  

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.163 Reuse of stamps...

2014-04-01

63

27 CFR 479.163 - Reuse of stamps prohibited.  

Code of Federal Regulations, 2012 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.163 Reuse of stamps...

2012-04-01

64

27 CFR 479.163 - Reuse of stamps prohibited.  

Code of Federal Regulations, 2010 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.163 Reuse of stamps...

2010-04-01

65

27 CFR 479.163 - Reuse of stamps prohibited.  

Code of Federal Regulations, 2013 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.163 Reuse of stamps...

2013-04-01

66

Making Sense of Oil Stamp Saving Schemes  

E-print Network

to make sense of oils stamps (in a traditional economic framework) is by arguing that ?rather than using them as a savings vehicle ? households consider the stamps as an elegant way to help friends/family towards the payment of their fuel bills without... to each individual: An individual has a ?temptation preference? that captures her immediate desires and a ?normative preference?that captures her view of what choice she should make, that is, her view of what is best for her welfare (like saving...

Brutscher, Philipp-Bastian

2012-01-23

67

Food Stamp Program Participation of Refugees and Immigrants  

Microsoft Academic Search

The Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) dramatically changed the availability of food stamps to immigrants, but not to refugees. However, refugee usage of food stamps in the post-reform era has declined more than usage of either other immigrants or native citizens. We investigate food stamp program participation of immigrants and refugees to ascertain if the resulting decline

Christopher R. Bollinger; Paul Hagstrom

2008-01-01

68

49 CFR 179.24 - Stamping.  

Code of Federal Regulations, 2012 CFR

...SPECIFICATIONS FOR TANK CARS General Design Requirements § 179.24 Stamping...back end left side (BL) body bolster webs so that each plate is readily accessible...Underframe/Stub Sill Type (UF/SS DESIGN): The design from Line 32 of...

2012-10-01

69

49 CFR 179.24 - Stamping.  

Code of Federal Regulations, 2013 CFR

...SPECIFICATIONS FOR TANK CARS General Design Requirements § 179.24 Stamping...back end left side (BL) body bolster webs so that each plate is readily accessible...Underframe/Stub Sill Type (UF/SS DESIGN): The design from Line 32 of...

2013-10-01

70

49 CFR 179.24 - Stamping.  

...SPECIFICATIONS FOR TANK CARS General Design Requirements § 179.24 Stamping...back end left side (BL) body bolster webs so that each plate is readily accessible...Underframe/Stub Sill Type (UF/SS DESIGN): The design from Line 32 of...

2014-10-01

71

Pixel Palette: Put Your Stamp on It.  

ERIC Educational Resources Information Center

Describes a project used in a senior information design class where the students created their own self-portraits on rubber stamps through the use of Photoshop and QuarkXPress. Explains that the students learned about the difference between line art and continuous tone images as well as the effects of printing ink and papers. (CMK)

Osterer, Irv

1998-01-01

72

Efficient Broadcast TimeStamping (Extended Abstract)  

E-print Network

, however, Haber and Stornetta ([HaSt90]) show that in a reasonable model, forward and backward time; The model used in this work is somewhat different from that used by Haber and Stornetta. We assume that our demonstrate to any challenger the round in which a document was stamped. Thus, unlike Haber and Stornetta, we

Bernstein, Phil

73

Stamps Tell the Story of Nuclear Energy.  

ERIC Educational Resources Information Center

This document provides a summary history of the individual scientists principally responsible for the development of nuclear physics and a survey of modern utilization of atomic energy. Identified throughout the booklet are postage stamps illustrating each individual and topic discussed. (SL)

Angelo, Joseph A., Jr.

74

Studies on the finite element simulation in sheet metal stamping processes  

NASA Astrophysics Data System (ADS)

The sheet metal stamping process plays an important role in modern industry. With the ever-increasing demand for shape complexity, product quality and new materials, the traditional trial and error method for setting up a sheet metal stamping process is no longer efficient. As a result, the Finite Element Modeling (FEM) method has now been widely used. From a physical point of view, the formability and the quality of a product are influenced by several factors. The design of the product in the initial stage and the motion of the press during the production stage are two of these crucial factors. This thesis focuses on the numerical simulation for these two factors using FEM. Currently, there are a number of commercial FEM software systems available in the market. These software systems are based on an incremental FEM process that models the sheet metal stamping process in small incremental steps. Even though the incremental FEM is accurate, it is not suitable for the initial conceptual design for its needing of detailed design parameters and enormous calculation times. As a result, another type of FEM, called the inverse FEM method or one-step FEM method, has been proposed. While it is less accurate than that of the incremental method, this method requires much less computation and hence, has a great potential. However, it also faces a number of unsolved problems, which limits its application. This motivates the presented research. After the review of the basic theory of the inverse method, a new modified arc-length search method is proposed to find better initial solution. The methods to deal with the vertical walls are also discussed and presented. Then, a generalized multi-step inverse FEM method is proposed. It solves two key obstacles: the first one is to determine the initial solution of the intermediate three-dimensional configurations and the other is to control the movement of nodes so they could only slide on constraint surfaces during the search by Newton-Raphson iteration. The computer implementation of the generalized multi-step inverse FEM is also presented. By comparing to the simulation results using a commercial software system, the effectiveness of the new method is validated. Other than the product design, the punch motion (including punch speed and punch trajectory) of the stamping press also has significant effect on the formability and the quality of the product. In fact, this is one of the major reasons why hydraulic presses and/or servo presses are used for parts which demand high quality. In order to reveal the quantitative correlation between the punch motion and the part quality, the Cowper-Symonds strain rate constitutive model and the implicit dynamic incremental FEM are combined to conduct the research. The effects of the punch motion on the part quality, especially the plastic strain distribution and the potential springback, have been investigated for the deep drawing and the bending processes respectively. A qualitative relationship between the punch motion and the part quality is also derived. The reaction force of the punch motion causes the dynamic deformation of the press during the stamping, which in turn influences the part quality as well. This dynamic information, in the form of the strain signal, is an important basis for the on-line monitoring of the part quality. By using the actual force as the input to the press, the incremental FEM is needed to predict the strain of the press. The result is validated by means of experiments and can be used to assist the on-line monitoring.

Huang, Ying

75

How can you use old stamps?  

NSDL National Science Digital Library

This problem from Figure This! helps students develop problem solving skills and algebraic thinking while practicing number operations. Students are challenged to use combinations of stamps of two different denominations to make a specific total. The "Try These" feature provides further challenges. The Answer page offers four different solution approaches. "Did You Know?" presents several related facts. The activity includes a page of print and Internet resources. Figure This! also provides information and support for families.

2004-01-01

76

A sheet metal forming simulation of automotive outer panels considering the behavior of air in die cavity  

NASA Astrophysics Data System (ADS)

During a sheet metal forming process of automotive outer panels, the air trapped between a blank sheet and a die tool can become highly compressed, ultimately influencing the blank deformation and the press force. To prevent this problem, vent holes are drilled into die tools and needs several tens to hundreds according to the model size. The design and the drilling of vent holes are based on expert's experience and try-out result and thus the process can be one of reasons increasing development cycle. Therefore the study on the size, the number, and the position of vent holes is demanded for reducing development cycle, but there is no simulation technology for analyzing forming defects, making numerical sheet metal forming process simulations that incorporate the fluid dynamics of air. This study presents a sheet metal forming simulation of automotive outer panels (a roof and a body side outer) that simultaneously simulates the behavior of air in a die cavity. Through CAE results, the effect of air behavior and vent holes to blank deformation was analyzed. For this study, the commercial software PAM-STAMP{trade mark, serif} and PAM-SAFE{trade mark, serif} was used.

Choi, Kwang Yong; Kim, Yun Chang; Choi, Hee Kwan; Kang, Chul Ho; Kim, Heon Young

2013-12-01

77

Croatian postage stamps featuring distinguished medical events and personalities.  

PubMed

Modern Croatian history of postal services started with the first postage stamp issued as a sign of sovereignty and statehood after the Declaration of independence in 1991. A review of recent catalogues and theme collections has shown that of 654 definitive and commemorative stamps issued from 1991 to early 2008, sixteen were dedicated to medicine.Two stamps show health care institutions: ZRC Lipik, and health resort VaraZdinske Toplice; two commemorative stamps call attention to blindness-related issues, and one dedicated to disability is entitled "Mines". A series of three stamps entitled "Flora: Medicinal Herbs" recalls traditional folk medicine. In 2001, a stamp was issued on the occasion of the International Non-smoking Day to warn about the adverse effects of smoking on the development of cardiovascular diseases. The most common medicine-related subject on postage stamps were distinguished physicians and scientists: Ante Sercer, Stjepan Betleheim, Julije Domac, Dr agutin Gorjanovi?-Kramberger, and Duro Baglivi. Indispensable in medical philately are the semi-postal (charity) stamps issued by nonpostal institutions such as the Red Cross, Tuberculosis Week, the Croatian Anti-Cancer League, and the Croatian Diabetic Association. These postage stamps not only remind the public of the rich Croatian healthcare history, but they are also powerful tools to convey messages about public health and disease prevention. PMID:20102255

Salopek, Igor

2008-01-01

78

Using STAMP to understand recent increases in malicious software activity  

E-print Network

My advisor, Professor Leveson has developed an accident modeling framework called STAMP (Systems Theoretic Accident Modeling and Processes.) Traditional accident models typically focus on component failure; in contrast, ...

Zipkin, David S

2005-01-01

79

Die Führungskräftebeurteilung  

Microsoft Academic Search

\\u000a Es ist Intention dieses Buches, die natürliche Verknüpfung von Unternehmensplanung und Führungskräftebeurteilung herauszuarbeiten.\\u000a Wir interpretieren die Unternehmensplanung als einen zukunftsorientierten, auf das Unternehmen in seiner Gesamtheit ausgerichteten\\u000a Prozess, in dessen Verlauf das Management Ziele und Strategien entwickelt, die sich auf simulierte Umweltsituationen beziehen,\\u000a und zwar unabhängig davon, ob neue Umweltlagen mit oder ohne Einwirken des Unternehmens entstehen. Weil die Planung

Peter Maier

80

41 CFR 101-25.103-4 - Disposition of promotional materials, trading stamps, or bonus goods.  

Code of Federal Regulations, 2010 CFR

...promotional materials, trading stamps, or bonus goods. (a...promotional materials, trading stamps, or bonus goods, without...promotional materials, trading stamps, or bonus goods to the above...by the receiving agency or a medical facility, they should be...

2010-07-01

81

Kiln for hot-pressing compacts in a continuous manner  

DOEpatents

The invention is directed to a hot pressing furnace or kiln which is capable of preheating, hot pressing, and cooling a plurality of articles in a sequential and continuous manner. The hot pressing furnace of the present invention comprises an elongated, horizontally disposed furnace capable of holding a plurality of displaceable pusher plates each supporting a die body loaded with refractory or ceramic material to be hot pressed. Each of these plates and the die body supported thereby is sequentially pushed through the preheating zone, a temperature stabilizing and a hot pressing zone, and a cooling zone so as to provide a continuous hot-pressing operation of a plurality of articles.

Reynolds, C.D Jr.

1983-08-08

82

Kiln for hot-pressing compacts in a continuous manner  

DOEpatents

The present invention is directed to a hot pressing furnace or kiln which is capable of preheating, hot pressing, and cooling a plurality of articles in a sequential and continuous manner. The hot pressing furnace of the present invention comprises an elongated, horizontally disposed furnace capable of holding a plurality of displaceable pusher plates each supporting a die body loaded with refractory or ceramic material to be hot pressed. Each of these plates and the die body supported thereby is sequentially pushed through the preheating zone, a temperature stabilizing and a hot pressing zone, and a cooling zone so as to provide a continuous hot-pressing operation of a plurality of articles.

Reynolds, Jr., Carl D. (Clinton, TN)

1985-01-01

83

42 CFR 71.3 - Designation of yellow fever vaccination centers; Validation stamps.  

Code of Federal Regulations, 2012 CFR

...false Designation of yellow fever vaccination centers; Validation stamps. ...3 Designation of yellow fever vaccination centers; Validation stamps. (a) Designation of yellow fever vaccination centers. (1) The...

2012-10-01

84

42 CFR 71.3 - Designation of yellow fever vaccination centers; Validation stamps.  

...false Designation of yellow fever vaccination centers; Validation stamps. ...3 Designation of yellow fever vaccination centers; Validation stamps. (a) Designation of yellow fever vaccination centers. (1) The...

2014-10-01

85

42 CFR 71.3 - Designation of yellow fever vaccination centers; Validation stamps.  

Code of Federal Regulations, 2011 CFR

...false Designation of yellow fever vaccination centers; Validation stamps. ...3 Designation of yellow fever vaccination centers; Validation stamps. (a) Designation of yellow fever vaccination centers. (1) The...

2011-10-01

86

42 CFR 71.3 - Designation of yellow fever vaccination centers; Validation stamps.  

Code of Federal Regulations, 2010 CFR

...false Designation of yellow fever vaccination centers; Validation stamps. ...3 Designation of yellow fever vaccination centers; Validation stamps. (a) Designation of yellow fever vaccination centers. (1) The...

2010-10-01

87

42 CFR 71.3 - Designation of yellow fever vaccination centers; Validation stamps.  

Code of Federal Regulations, 2013 CFR

...false Designation of yellow fever vaccination centers; Validation stamps. ...3 Designation of yellow fever vaccination centers; Validation stamps. (a) Designation of yellow fever vaccination centers. (1) The...

2013-10-01

88

Configurable Text Stamp Identification Tool with Application of Fuzzy Logic  

Microsoft Academic Search

This paper presents our work on locating and removing unwanted text stamps within archive documents which are being prepared for OCR. Text stamps mainly comprise one or several text lines with a fixed shape, font size and colour, and may appear anywhere on the document with variable orientation and overlap of other text fields. We apply a configurable user interface

Jingyu He; Andy C. Downton

2004-01-01

89

Three-dimensional toolsforanalysis andconservation of ancient wooden stamps  

Microsoft Academic Search

This paper deals with the analysis and conservation of ancient wooden stamps from museum or library collections. The aim is to provide historians with tools that ease the process of handling and observation of very fragile and unique objects. By performing a three- dimensional imaging of stamps, data are processed in three different ways: (1) adaptive thresholding on the corresponding

R Seulin; F Nicolierb

2006-01-01

90

Postage Stamps and the Teaching of GDR Culture and Civilization.  

ERIC Educational Resources Information Center

Proposes the use of postage stamps as sources of information and visual aids in teaching the culture and civilization of the German Democratic Republic. Illustrates how stamps can provide interesting insights into areas such as history, economy, socio-political customs, foreign policy and the arts. (MES)

Di Napoli, Thomas

1980-01-01

91

How to Time-Stamp a Digital Document  

Microsoft Academic Search

The prospect of a world in which all text, audio, picture, and video documents are indigital form on easily modifiable media raises the issue of how to certify when a documentwas created or last changed. The problem is to time-stamp the data, not the medium. Wepropose computationally practical procedures for digital time-stamping of such documents sothat it is infeasible for

Stuart Haber; W. Scott Stornetta

1991-01-01

92

STAMP: SMTP server Topological Analysis by Message headers Parsing  

E-print Network

STAMP: SMTP server Topological Analysis by Message headers Parsing Emmanuel Lochin1,2 1 CNRS ; LAAS to analyse SMTP servers overlay topology. STAMP builds a weighted and oriented graph from an email database of these information for the end-user, their analysis can reveal problems (such as servers path that cause message

Paris-Sud XI, Université de

93

A STAMP ANALYSIS OF THE LEX COMAIR 5191 ACCIDENT  

E-print Network

A STAMP ANALYSIS OF THE LEX COMAIR 5191 ACCIDENT Thesis submitted in partial fulfilment;A STAMP ANALYSIS OF THE LEX COMAIR 5191 ACCIDENT Paul S. Nelson 2 #12;Acknowledgements I want pressure" (Dekker, 2007, p. 131) A new, holistic systems perspective, accident model is used for analysis

Leveson, Nancy

94

Guidance: IRB Approval Document Stamping DATE AUTHOR APPROVED BY PAGE  

E-print Network

recruitment documents, and informed consent documents should be submitted for IRB review and approval · Informed consent documents* NOT STAMPED · Investigator Protocol · Sponsor protocols · Drug brochures/sheets · De-briefing scripts * If re-consenting of subjects is necessary, current stamped informed consent

Schladow, S. Geoffrey

95

Postal Service unveils new space stamps at KSC  

NASA Technical Reports Server (NTRS)

Applauding the unveiling of the U.S. Postal Service's newest series of stamps, Space Discovery, are are (left to right) Barry Ziehl, U.S. Postal Service; JoAnn Morgan, KSC associate director of advanced development and shuttle upgrades; Karla Corcoran, Postal Service inspector general; Kristene A. Graves, a student from Lewis Carroll Elementary School; and Dr. Donald Thomas, astronaut and veteran of four Shuttle missions. During the ceremony, Kristene read her essay 'My Stamp Adventure' that she had written for an area-wide contest for the event. The unveiling took place at the KSC Visitor Complex and coincided with NASA's 40th anniversary on this date. Behind the large display can be seen the mockup of an orbiter. The stamps were designed by renowned aerospace artist Attila Heija. The strip of five individual stamps together make up a futuristic scene complete with space vehicles, a futuristic space city, and space explorers. The stamps are available nationwide beginning Oct. 1.

1998-01-01

96

Postal Service unveils new space stamps at KSC  

NASA Technical Reports Server (NTRS)

The U.S. Postal Service unveils its newest series of stamps, Space Discovery, at the KSC Visitor Complex. The event coincided with NASA's 40th anniversary on this date. Participating in the unveiling are (left to right) Barry Ziehl, U.S. Postal Service; JoAnn Morgan, KSC associate director of advanced development and shuttle upgrades; Karla Corcoran, Postal Service inspector general; Kristene A. Graves, a student from Lewis Carroll Elementary School ; and Dr. Donald Thomas, astronaut and veteran of four Shuttle missions. Behind them is the mockup of an orbiter. During the ceremony, Kristene read her essay 'My Stamp Adventure' that she had written for an area-wide contest for the event. The stamps were designed by renowned aerospace artist Attila Heija. The strip of five individual stamps together make up a futuristic scene complete with space vehicles, a futuristic space city, and space explorers. The stamps are available nationwide beginning Oct. 1.

1998-01-01

97

Waardebetrokkenheid, die sosiologie en die sosioloog  

Microsoft Academic Search

Die gedagte dat daar niks nuuts onder die son is nie, is 'n populere een wat so oud as die mensdom selfis. A1hoewel die modeme kennissosioloog hierdie idee in meer gesofistikeerde terme sal stel, val dit nietemin op hoedanig bepaalde temas en polemieke herhaaldelik in die kontlik van idees op die voorgrond is. Ten spyte van die feit dat die

C. Dawfre Roode

1972-01-01

98

Experimental Characterization of Heat Transfer Coefficients During Hot Forming Die Quenching of Boron Steel  

NASA Astrophysics Data System (ADS)

The heat transfer coefficient (HTC) between the sheet metal and the cold tool is required to predict the final microstructure and mechanical properties of parts manufactured via hot forming die quenching. Temperature data obtained from hot stamping experiments conducted on boron steel blanks were processed using an inverse heat conduction algorithm to calculate heat fluxes and temperatures at the blank/die interface. The effect of the thermocouple response time on the calculated heat flux was compensated by minimizing the heat imbalance between the blank and the die. Peak HTCs obtained at the end of the stamping phase match steady-state model predictions. At higher blank temperatures, the time-dependent deformation of contact asperities is associated with a transient regime in which calculated HTCs are a function of the initial stamping temperature.

Caron, Etienne; Daun, Kyle J.; Wells, Mary A.

2013-04-01

99

Authentication, Time-Stamping and Digital Signatures  

NASA Technical Reports Server (NTRS)

Time and frequency data are often transmitted over public packet-switched networks, and the use of this mode of distribution is likely to increase in the near future as high-speed logical circuits transmitted via networks replace point-to-point physical circuits. ALthough these networks have many technical advantages, they are susceptible to evesdropping, spoofing, and the alteration of messages enroute using techniques that are relatively simple to implement and quite difficult to detect. I will discuss a number of solutions to these problems, including the authentication mechanism used in the Network Time Protocol (NTP) and the more general technique of signing time-stamps using public key cryptography. This public key method can also be used to implement the digital analog of a Notary Public, and I will discuss how such a system could be realized on a public network such as the Internet.

Levine, Judah

1996-01-01

100

Nocturnal penile tumescence monitoring with stamps in impotent diabetics.  

PubMed

The usefulness of nocturnal penile tumescence (NPT) monitoring with stamps was evaluated in diabetic males with impotence. The stamps, which were similar in paper and size to Japanese 10-yen postage stamps, were wrapped around the penis before sleep and the stamp ring was checked for breakage the next morning. Clinical features of the subjects were investigated by penile blood pressure index (PBPI), neurological examinations, psychological tests, and hormonal measurements. Nineteen out of 37 patients with impotence had a breakage of the stamp rings on one or more of 3 nights. The patients with non-breakage of stamp rings had significantly more serious diabetic neuropathy (peripheral and autonomic), depressive tendency, loss of libido, and a higher prevalence of heavy smoking than those with breakage of the stamp rings. PBPI and hormonal findings showed no difference between the breakage and non-breakage patients. These results show that the diagnostic value of this method is nearly the same as that of NPT recording with a strain gauge. PMID:3359920

Takahashi, Y; Hirata, Y

1988-02-19

101

High-Resolution Contact Printing with Chemically Patterned Flat Stamps Fabricated by Nanoimprint Lithography  

Microsoft Academic Search

Chemically patterned flat stamps provide an effective solution to avoid mechanical stamp-stability problems currently encountered in microcontact printing. A new method is developed to fabricate chemical patterns on a flat PDMS stamp using nanoimprint lithography. Sub-100 nm gold patterns are successfully replicated by these chemically patterned flat PDMS stamps.

Xuexin Duan; Yiping Zhao; András Perl; Erwin Berenschot; David N. Reinhoudt; Jurriaan Huskens

2009-01-01

102

Die Systemsteuerung  

Microsoft Academic Search

\\u000a In der Windows-Systemsteuerung, die aus dem Startmenü aufgerufen werden kann, befinden sich viele Programme, mit denen die\\u000a Einstellungen und die Arbeitsweise von Windows 7 angepasst werden können (siehe Abb. 4.1). Diese Abbildung ist jedoch nur\\u000a als Beispiel zu verstehen, denn in Abhängigkeit von der in einem System installierten Hard-\\/Software (z. B. Bluetooth-Adapter,\\u000a Apple Quicktime etc.) und Windows-7-Funktionen (bsp. für TabletPCs)

Martin Grotegut

103

Remote plunger removal device for small-scale incremental pressing  

SciTech Connect

Small-scale pressing of high explosives (HE) at Los Alamos National Laboratory (LANL) and elsewhere is routinely performed using pneumatic presses. Blast shields provide protection to the operator during the pressing procedure, but safety of the operator is a concern during removal of the plunger, which is currently performed manually. To minimize this risk, very high tolerances between the plunger and the die are required. These tolerances are often very costly, especially in the case of long, relatively narrow dies. The safety issue is an even greater concern with incremental pressing in which cleaning the die between increments is difficult or impossible. To better protect press operators, a device has been designed and constructed to allow remote plunger removal in a standard HE press. In this report the authors describe this modified press that allows remote removal of the plunger.

Burnside, N.J.; Son, S.F.; Asay, B.W.

1997-09-01

104

27 CFR 479.161 - National Firearms Act stamps.  

Code of Federal Regulations, 2011 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.161 National Firearms Act...

2011-04-01

105

27 CFR 479.161 - National Firearms Act stamps.  

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.161 National Firearms Act...

2014-04-01

106

27 CFR 479.161 - National Firearms Act stamps.  

Code of Federal Regulations, 2013 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.161 National Firearms Act...

2013-04-01

107

27 CFR 479.161 - National Firearms Act stamps.  

Code of Federal Regulations, 2012 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.161 National Firearms Act...

2012-04-01

108

27 CFR 479.161 - National Firearms Act stamps.  

Code of Federal Regulations, 2010 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Distribution and Sale of Stamps § 479.161 National Firearms Act...

2010-04-01

109

Potential technologies based on stamped periodic nanoparticle array  

E-print Network

A stamped nanoparticle array patterning technology integrating interference lithography, self assembly and soft lithography is assessed. This technology is capable of parallel patterning of nanoparticles at a large scale. ...

Wang, Zongbin

2009-01-01

110

11. Detail of log stamp on ends of plank, near ...  

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

11. Detail of log stamp on ends of plank, near the Minnesota end of the bridge - Enloe Bridge No. 90021, Spanning Red River of North between Minnesota & North Dakota on County State Aid Highway 28, Wolverton, Wilkin County, MN

111

A STAMP model of the Überlingen aircraft collision accident  

E-print Network

STAMP is a method for evaluating accidents that is based on systems theory. It departs from traditional event chain models that tend to focus on human errors instead of the goals and motives that triggered the errors. The ...

Wong, Brian, 1982 Nov 11-

2004-01-01

112

46 CFR 54.10-20 - Marking and stamping.  

Code of Federal Regulations, 2010 CFR

...CONTINUED) MARINE ENGINEERING PRESSURE VESSELS Inspection, Reports, and...Marking and stamping. (a) Pressure vessels (replaces UG-116, except...paragraph (k), and UG-118). Pressure vessels that are required by §...

2010-10-01

113

Stamp & Extend Instant but Undeniable Timestamping based on  

E-print Network

such trivial cases as documentation for online financial operations (e.g. on a stock ex- change), but also a flawless technical framework elec- tronic time-stamps may become a powerful tool for electronic frauds

114

SMALL DIAMETER STENCILING, ROLLING OVER STAMP. United States Pipe ...  

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

SMALL DIAMETER STENCILING, ROLLING OVER STAMP. - United States Pipe & Foundry Company Plant, Coating, Painting, Lining & Packaging Building, 2023 St. Louis Avenue at I-20/59, Bessemer, Jefferson County, AL

115

164. Photocopied July 1978. VIEW OF STEAMTURBINE BUILDING AT STAMP ...  

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

164. Photocopied July 1978. VIEW OF STEAM-TURBINE BUILDING AT STAMP MILL. BUILDING CONSTRUCTED IN 1921 TO USE EXHAUST STEAM TO GENERATE ELECTRICITY. C. 1925. - Quincy Mining Company, Hancock, Houghton County, MI

116

24. DETAIL OF STAMP BATTERIES CAMS, TAPPETS AND STEMS WITH ...  

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

24. DETAIL OF STAMP BATTERIES CAMS, TAPPETS AND STEMS WITH SIX FOOT SCALE, LOOKING NORTH NORTHWEST. SEE CA-290-48 (CT) FOR IDENTICAL COLOR TRANSPARENCY. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

117

48. DETAIL OF STAMP BATTERIES CAMS, TAPPETS AND STEMS WITH ...  

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

48. DETAIL OF STAMP BATTERIES CAMS, TAPPETS AND STEMS WITH SIX FOOT SCALE, LOOKING NORTH NORTHWEST. SEE CA-290-24 FOR IDENTICAL B&W NEGATIVE. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

118

47. DETAIL OF UPPER STAMP BATTERIES CAMS, TAPPETS AND STEMS, ...  

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

47. DETAIL OF UPPER STAMP BATTERIES CAMS, TAPPETS AND STEMS, LOOKING NORTH NORTHWEST. SEE CA-290-22 FOR IDENTICAL B&W NEGATIVE. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

119

22. DETAIL OF UPPER STAMP BATTERIES CAMS, TAPPETS AND STEMS, ...  

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

22. DETAIL OF UPPER STAMP BATTERIES CAMS, TAPPETS AND STEMS, LOOKING NORTH NORTHWEST. SEE CA-290-47 (CT) FOR IDENTICAL COLOR TRANSPARENCY. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

120

Die Primzahlen  

Microsoft Academic Search

Ihren mystischen Nimbus haben die natürlichen Zahlen nach und nach verloren; aber niemals ist das Interesse von Mathematikern\\u000a und Laien an den Gesetzen der Zahlenwelt schwächer geworden. Es mag sein, daß Euklids Ruhm auf der geometrischen Deduktion seiner „Elemente“ beruht; bis heute haben die „Elemente“ jedenfalls den Unterricht\\u000a in der Geometrie entscheidend beeinflußt. Und doch war Euklids Geometrie im wesentlichen

Richard Courant; Herbert Robbins

121

OVERVIEW OF STAMP MILL SITE,LOOKING SOUTHWEST. THE LOWER TRAM TERMINAL ...  

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

OVERVIEW OF STAMP MILL SITE,LOOKING SOUTHWEST. THE LOWER TRAM TERMINAL IS OUT OF FRAME, JUST TO THE RIGHT. WATER TANK, LOADING PLATFORM, AND TRAM TRESTLE LEADING UP TO THE TRAM TERMINAL ARE AT RIGHT. THE STRUCTURE AT EXTREME RIGHT BELOW THE TRESTLE, ARE REMAINS OF A SECONDARY ORE BIN, WITH BALL MILL FOUNDATIONS AND WOOD DEBRIS JUST BELOW ON THE SECOND LEVEL. AT CENTER IS A BOILER AND THE FRAME WORK OF A FILTER PRESS. THE SMALL STRUCTURE AT CENTER LEFT IS AN INTERPRETIVE SIGN PLACED BY THE PARK SERVICE. AT LOWER LEFT, THIRD LEVEL OF THE MILL, ARE THE REMAINS OF A BLACKSMITH'S FORGE. - Keane Wonder Mine, Park Route 4 (Daylight Pass Cutoff), Death Valley Junction, Inyo County, CA

122

Spacecraft Trajectory Analysis and Mission Planning Simulation (STAMPS) Software  

NASA Technical Reports Server (NTRS)

STAMPS simulates either three- or six-degree-of-freedom cases for all spacecraft flight phases using translated HAL flight software or generic GN&C models. Single or multiple trajectories can be simulated for use in optimization and dispersion analysis. It includes math models for the vehicle and environment, and currently features a "C" version of shuttle onboard flight software. The STAMPS software is used for mission planning and analysis within ascent/descent, rendezvous, proximity operations, and navigation flight design areas.

Puckett, Nancy; Pettinger, Kris; Hallstrom,John; Brownfield, Dana; Blinn, Eric; Williams, Frank; Wiuff, Kelli; McCarty, Steve; Ramirez, Daniel; Lamotte, Nicole; Vu, Tuan

2014-01-01

123

Food Stamp Program Participation Among Impoverished African Americans  

Microsoft Academic Search

This study identifies the characteristics of eligible African Americans who are not receiving food stamps. Secondary analysis\\u000a of the American Community Survey focused on 14,443 African American citizens aged 18 and over who were living below the poverty\\u000a line. Bivariate and logistic regression analyses were used to compare the 6,558 recipients of food stamps with the 7,885 non-recipients.\\u000a Less than

Melissa Redmond; Esme Fuller-Thomson

2009-01-01

124

Investigation of the Hot-Stamping Process for Advanced High-Strength Steel Sheet by Numerical Simulation  

NASA Astrophysics Data System (ADS)

Hot forming is a new way to manufacture complex-shaped components of advanced high-strength steel (AHSS) sheet with a minimum of spring-back. Numerical simulation is an effective way to examine the hot-forming process, particularly to determine thermal and thermo-mechanical characteristics and their dependencies on temperature, strain and strain rate. The flow behavior of the 22MnB5 AHSS is investigated through hot tensile tests. A 3D finite element (FE) model of hot-stamping process for the [InlineMediaObject not available: see fulltext.] shaped part is built under the ABAQUS/Explicit environment based on the solutions of several key problems, such as treatment of contact between blank and tools, determination of material characteristics and meshing, etc. Numerical simulation is carried out to investigate the influence of blank holder force (BHF) and die gap on the hot-forming process for the [InlineMediaObject not available: see fulltext.] shaped part. Numerical results show the FE model is effective in simulation of hot-forming process. Large BHF reduces the amount of spring-back and improves the contact of flange with tools while avoiding cracking of stamped part. Die gap has a considerable influence on the distribution of temperature on side walls; the larger the die gap, higher is the temperature on the sidewall of [InlineMediaObject not available: see fulltext.] shaped part.

Liu, H. S.; Xing, Z. W.; Bao, J.; Song, B. Y.

2010-04-01

125

Thermal contact resistance estimation at the blank\\/tool interface: experimental approach to simulate the blank cooling during the hot stamping process  

Microsoft Academic Search

In the present paper, an experimental device designed and developed to estimate the thermal contact resistance (R\\u000a \\u000a C\\u000a \\u000a ) at the blank\\/tool interface is presented along with the simulation chain used to validate the experimental results. The designed\\u000a stamping tool is composed of a die and a punch made in Z160CDV12 steel and presenting an omega shape. Sample and tools

Bakri Abdul Hay; Brahim Bourouga; Christine Dessain

2010-01-01

126

Die Face Engineering based Springback Compensation Strategy and Implementation  

NASA Astrophysics Data System (ADS)

Springback or shape change has been one of the major challenges in sheet metal fabrication, particularly with increase application of high strength steel (HSS) and aluminum alloys in automotive stamping. Springback, an elastic material recovery after the unloading of stamping tools, causes variations and inconsistencies of final part dimensions. Minor or mild springback usually can be corrected in the re-strike process. Excessive springback must be corrected so the part will be produced within the given design tolerance and dimension. The commonly used Spring Forward approaches and shape compensations such as over-crown and over-bending are proven effective to alleviate excessive springback. To enhance these approaches, a new strategy of Die Face Engineering (DFE) based processing is proposed to quickly and easily to achieve the maximum allowable compensation using the under cut (or die lock) as the primary criteria. The implementation of the die face compensation through iterative FEA calculation, automatic surface mapping, projection and manual morphing are crucial to meet production environment requirements in terms of generating NC quality CAD surfaces of the compensated or morphed die face. In this paper, the strategy of the die face compensation with the consideration of the under cut criteria is presented. The implementation of various processes to enable user to perform the die face compensation task in a production environment is also discussed. Finally, two examples are shown to demonstrate the implementation of the proposed springback compensation scheme based on the combined CAE/CAD methodology.

Tang, Arthur; Lee, Wing; He, Jeanne; Xu, Jinbo; Liu, Kesu; Chen, Chin Chun

2005-08-01

127

"Stamp-off" to micropattern sparse, multicomponent features.  

PubMed

Spatially patterned subtractive de-inking, a process we term "stamp-off," provides a simple method to generate sparse, multicomponent protein micropatterns. It has been applied to control cell adhesion, study adhesion biology, as well as to micropattern fragile surfaces. This technique can also readily be applied to study nanoscale interactions between cell membrane receptors and surface-immobilized ligands. It is based on conventional microcontact printing and as such requires the same reagents, including photolithographically defined masters, a spin-coater, poly(dimethyl siloxane) (PDMS), and conventional cell culture reagents such as glass coverslips and adhesive proteins. Stamp-off is conceptually simplified into three steps: (1) generation of an appropriate cell culture substrate, PDMS-coated glass, (2) micropatterning with stamp-off, and (3) cell deposition. After elaborating each of these three methods, we discuss limitations of the technique and its applications. PMID:24439276

Desai, Ravi A; Rodriguez, Natalia M; Chen, Christopher S

2014-01-01

128

39. CLOSE UP DETAIL OF THE FEEDER AND STAMP CONNECTION. ...  

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

39. CLOSE UP DETAIL OF THE FEEDER AND STAMP CONNECTION. THE STAMP AN MORTAR BOX ARE ON THE LEFT AND THE FEEDER WITH ITS FEEDER DISK IS ON THE RIGHT. NOTE THE COLLAR ON THE CENTER STAMP STEM (UPPER LEFT CORNER OF THE IMAGE) THAT ACTIVATES THE LEVER IN THE CENTER OF THE PHOTO. THE COLLAR IS POSITIONED SUCH THAT WHEN THE LEVEL OF THE MATERIAL REACHES A LOW POINT IN THE MORTAR BOX IT PUSHES DOWN ON THE LEVER WHICH IN TURN ACTIVATES THE AUTOMATIC FEEDER DRIVE MECHANISM WHICH THEM DELIVERS ORE INTO THE BACKSIDE OF THE MORTAR BOX. - Standard Gold Mill, East of Bodie Creek, Northeast of Bodie, Bodie, Mono County, CA

129

Can Food Stamps help to reduce Medicare spending on diabetes?  

PubMed

Diabetes is rapidly escalating amongst low-income, older adults at great cost to the Medicare program. We use longitudinal survey data from the Health and Retirement Study linked to administrative Medicare records and biomarker data to assess the relationship between Food Stamp receipt and diabetes health outcomes. We find no significant difference in Medicare spending, outpatient utilization, diabetes hospitalizations and blood sugar (HbA1c) levels between recipients and income-eligible non-recipients after controlling for a detailed set of covariates including individual fixed effects and measures of diabetes treatment compliance. As one-third of elderly Food Stamp recipients are currently diabetic, greater coordination between the Food Stamp, Medicare, and Medicaid programs may improve health outcomes for this group. PMID:21112260

Nicholas, Lauren Hersch

2011-01-01

130

Numerical Simulation of Textile Composite Stamping On Double Dome  

NASA Astrophysics Data System (ADS)

Stamping is one of the most effective ways to form textile composites in industry for providing high-strength, low-weight and cost-effective products. This paper presents a fully continuum mechanics-based approach for stamping simulation of textile fiber reinforced composites by using finite element (FE) method. A previously developed non-orthogonal constitutive model is used to represent the anisotropic mechanical behavior of textile composites under large deformation during stamping. Simulation are performed on a balanced plain weave composite with 0°/90° and ±45° as initial yarn orientation over a benchmark double dome device. Simulation results show good agreement with experimental output in terms of a number of parameters selected for comparison.

Peng, Xiongqi; Ur Rehman, Zia

2011-05-01

131

27 CFR 46.116 - Issuance, distribution, and examination of special tax stamps.  

Code of Federal Regulations, 2010 CFR

...together with the full tax remittance, the taxpayer...appropriately designated special tax stamp. If the return...to the taxpayer's principal place of business (or principal office in the case...Distribution of special tax stamps for...

2010-04-01

132

27 CFR 46.116 - Issuance, distribution, and examination of special tax stamps.  

Code of Federal Regulations, 2011 CFR

...together with the full tax remittance, the taxpayer...appropriately designated special tax stamp. If the return...to the taxpayer's principal place of business (or principal office in the case...Distribution of special tax stamps for...

2011-04-01

133

OVERVIEW OF LOWER TRAM TERMINAL AND STAMP MILL SITE, LOOKING ...  

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

OVERVIEW OF LOWER TRAM TERMINAL AND STAMP MILL SITE, LOOKING NORTHWEST. THE AERIAL TRAMWAY BEGINS AT THE TERMINAL AND CONTINUES NORTH TO THE UPPER RIGHT. THE FIRST SUPPORT TOWER CAN BE SEEN. JUST BELOW THE WATER TANK IS A LOADING PLATFORM AND TRAM TRESTLE USED FOR THE TRANSPORT OF SUPPLIES THAT LEAD UP TO THE TRAM TERMINAL. ALL THREE LEVELS OF THE FORMER 20 STAMP MILL CAN BE SEEN AT CENTER. SEE CA-291-02 FOR IDENTICAL B&W NEGATIVE. - Keane Wonder Mine, Park Route 4 (Daylight Pass Cutoff), Death Valley Junction, Inyo County, CA

134

OVERVIEW OF LOWER TRAM TERMINAL AND STAMP MILL SITE, LOOKING ...  

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

OVERVIEW OF LOWER TRAM TERMINAL AND STAMP MILL SITE, LOOKING NORTHWEST. THE AERIAL TRAMWAY BEGINS AT THE TERMINAL AND CONTINUES NORTH TO THE UPPER RIGHT. THE FIRST SUPPORT TOWER CAN BE SEEN. JUST BELOW THE WATER TANK IS A LOADING PLATFORM AND TRAM TRESTLE USED FOR THE TRANSPORT OF SUPPLIES THAT LEAD UP TO THE TRAM TERMINAL. ALL THREE LEVELS OF THE FORMER 20 STAMP MILL CAN BE SEEN AT CENTER. SEE CA-291-46( CT) FOR IDENTICAL COLOR TRANSPARENCY. - Keane Wonder Mine, Park Route 4 (Daylight Pass Cutoff), Death Valley Junction, Inyo County, CA

135

MIT Press  

NSDL National Science Digital Library

The editors and staff of The MIT Press, invite you to browse through their on-line catalogues featuring recent books (1993-1994) and current journals. The MIT Press is one of the world's leading scholarly technical publishers, offering texts and monographs in the computational and cognitive sciences, architecture, photography, art and literary theory, economics, environmental science, and linguistics.

136

49 CFR 238.119 - Rim-stamped straight-plate wheels.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Rim-stamped straight-plate wheels. 238.119 Section...Requirements § 238.119 Rim-stamped straight-plate wheels. (a)(1) Except...that is equipped with a rim-stamped straight-plate wheel if a brake shoe acts...

2010-10-01

137

SPA Non-Exempt Permanent using Time Stamp Page 1 Using time Information Management (TIM)  

E-print Network

SPA Non-Exempt Permanent using Time Stamp Page 1 Using time Information Management (TIM) Time Stamp Management (TIM) SPA Non-Exempt Employees Time Stamp Using Time Information Management (TIM) Time SPA Non or TIM Administrator. Each Department maintains a Payroll Processing Deadline for time card completion

Crews, Stephen

138

2014-15 SNAP (Food Stamps) Verification Worksheet  

E-print Network

2014-15 SNAP (Food Stamps) Verification Worksheet Office of Student Financial Assistance P.O. Box that all information reported on this worksheet is complete and correct. Warning: If you purposely give: ___________________ G:\\Financial Aid\\Forms\\2014-15\\1415_SNAP_Verification_Worksheet.docx RRAAREQ Code: ASNAP 3

Pantaleone, Jim

139

2013-14 SNAP (Food Stamps) Verification Worksheet  

E-print Network

2013-14 SNAP (Food Stamps) Verification Worksheet Office of Student Financial Assistance P.O. Box.aid@uaa.alaska.edu G:\\Financial Aid\\Forms\\2013-14\\1314_SNAP_Verification_Worksheet.docx RRAAREQ Code: ASNAP Your Free that all information reported on this worksheet is complete and correct. Warning: If you purposely give

Pantaleone, Jim

140

The Ph.D. Now Comes with Food Stamps  

ERIC Educational Resources Information Center

A record number of people are depending on federally financed food assistance. Food-stamp use increased from an average monthly caseload of 17 million in 2000 to 44 million people in 2011, according to the U.S. Department of Agriculture's Web site. Last year, one in six people--almost 50 million Americans, or 15 percent of the population--received…

Patton, Stacey

2012-01-01

141

The Formability of Friction Stir Welds in Automotive Stamping Environments  

SciTech Connect

Automobile body and truck cab structures are composed primarily of stampings formed from monolithic and constant gage blanks. Cost and weight penalties can arise when strength or other requirements in one small area of the part leads to the use of a material or gage that is overmatched to the needs of the rest of the stamping. Tailor Welded Blanks (TWBs) are hybrid sheet products composed of either different materials or different thickness sheets that are joined together, then subjected to a stamping operation to create a formed assembly. The strategy is employed generally to save weight and material costs in the formed assembly by placing higher strength or thicker sections only where needed. The forming or stamping process requires the joint to be severely deformed along with the parent sheets. Aluminum TWBs for automotive applications are particularly problematic because of the low formability of aluminum weld metal. Friction Stir Welding (FSW) is a process recently applied to Aluminum TWBs that has the potential to produce a higher quality weld. The current study presents data on the mechanical properties, formability, and FSW weld process parameter development for friction stir welded aluminum, Tailor Welded Blanks. Friction stir welded TWBs can be shown to have higher formability, higher ductility, and lower defect content than many competing joining processes, and they can be fabricated at speeds appropriate for automotive manufacturing.

Grant, Glenn J.; Davies, Richard W.; Stephens, Elizabeth V.; Wazny, Scott; Kaunitz, Leon; Waldron, Douglas J.

2006-02-01

142

The Formability of Friction Stir Welds in Automotive Stamping Environments  

SciTech Connect

Automobile body and truck cab structures are composed primarily of stampings formed from monolithic and constant gage blanks. Cost and weight penalties can arrise when strength or other requirements in one small area of the part leads to the use of a material or gage that is overmatched to the needs of the rest of the stamping. Tailor Welded Blanks (TWBs) are hybrid sheet products composed of either different materials or different thickness sheets that are joined together, then subjected to a stamping operation to create a formed assembly. The strategy is employed generally to save weight and material costs in the formed assembly by placing higher strength or thicker sections only where needed. The forming or stamping process requires the joint to be severely deformed along with the parent sheets. Aluminum TWBs for automotive applications are particularly problematic because of the low formability of aluminum weld metal. Friction Stir Welding (FSW) is a process recently applied to Aluminum TWBs that has the potential to produce a higher quality weld. The current study presents data on the mechanical properties, formability, and FSW weld process parameter development for friction stir woined, aluminum, Tailor Welded Blanks. Friction stir welded TWBs can be shown to have higher formability, higher ductility, and lower defect content than many competing joining processes, and they can be fabricated at speeds appropriate for automotive manufacturing.

Grant, Glenn J.; Davies, Richard W.; Stephens, Elizabeth V.; wazny, scott; Kaunitz, Leon; Waldron, D.

2005-04-01

143

Report on Nutrition and Special Groups. Part 1--Food Stamps.  

ERIC Educational Resources Information Center

The contents of this report by the staff of the Senate Select Committee on Nutrition and Human Needs--based on information gathered at the National Nutrition Policy hearings, from testimony before the Select Committee and the Senate Agriculture Committee and through staff investigation--are organized in nine chapters, as follows: (1) Food Stamp

Congress of the U.S., Washington, DC. Senate Select Committee on Nutrition and Human Needs.

144

Enhanced uniformity and durability of antisticking layer in imprinting stamps  

NASA Astrophysics Data System (ADS)

In the nanoimprint lithography (NIL) stamp, a fluorinated self-assembled monolayer (SAM) is used as an antisticking layer. The uniformity and durability of the antisticking layer should be improved for achieving an effective fabrication of imprinted devices. In order to achieve these goals, we manufactured a vaporized SAM coating system with tilt and rotation functions, and we uniformly formed the antisticking layer on the stamp surface. The antisticking layer was with the 0.5 nm uniformity and the almost the same thickness of coating and re-coating. Moreover, to enhance durability, we conducted the pre-treatment before SAM coating and post-treatment after SAM coating - plasma cleaning, re-coating, deionized (DI) water deposition and annealing. The content of fluorine increased with re-coating, we could infer that the density of the antisticking layer increased via re-coating. To inspect the lifetime of the SAM-coated stamp, we measured the stamp surface contact angle in every five thermal NIL and identified that the durability of antisticking layer was dramatically improved.

Lee, Moon Jae; Cho, Sang Uk; Lee, Sang Mae; Kim, Chang Seok; Jeong, Myung Yung

2012-06-01

145

Hunting for Metamorphic Engines Wing Wong and Mark Stamp  

E-print Network

Hunting for Metamorphic Engines Wing Wong and Mark Stamp Department of Computer Science San Jos´e State University San Jos´e, California Abstract In this paper, we analyze several metamorphic virus generators. We define a similarity index and use it to precisely quantify the degree of metamorphism

Stamp, Mark

146

Micromachining on copper and nickel by electrochemical wet stamping  

NASA Astrophysics Data System (ADS)

The fabrication of microstructures on copper and nickel has been achieved by an approach named electrochemical wet stamping (E-WETS). The E-WETS process allows the direct imprinting of microscopic reliefs on an agarose stamp into nickel and copper through a selective anodic dissolution process. The pre-patterned agarose with a high gel strength that has been soaked in a desired etching solution is employed as a stamp. It can direct and supply the solution preferentially on the contact area owing to the constant supply of electrolyte from the agarose stamp to the interface and then the electrochemical reaction is limited only to the contact area. Simultaneously, the product can be removed from the gel/substrate interface. On the basis of the electrochemical behavior of the copper electrode in contact with the agarose full of 0.1 M HClO4, the potential for the electrochemical micromachining was chosen to be a relatively low value, 0.4 V versus SCE, to prevent the generation of cuprous oxide. A voltage pulse was applied to the electrochemical machining of nickel. The pulse amplitude was set to 8 V versus SCE to take the electrode into the transpassivation region rather than the passivation region in the pulse duration. Furthermore, the different electrochemical mechanisms involved in the etching process have been discussed in detail.

Tang, Jing; Zhang, Li; Tian, Xiaochun

2010-11-01

147

46. DETAIL OF UPPER STAMP BATTERIES CAMS, TAPPETS, STEMS, AND ...  

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

46. DETAIL OF UPPER STAMP BATTERIES CAMS, TAPPETS, STEMS, AND RELATIONSHIP OF BULL WHEEL (LOWER RIGHT) LOOKING NORTH NORTHEAST. SEE CA-290-22 FOR A SIMILAR B&W NEGATIVE. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

148

45. DETAIL ELEVATION OF STAMP BATTERIES AND APRONS, LOOKING SOUTHEAST. ...  

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

45. DETAIL ELEVATION OF STAMP BATTERIES AND APRONS, LOOKING SOUTHEAST. MORTARS, BOSSES, MOST SHOES, STEMS, TAPPETS, CAMS AND BULL WHEELS ARE CLEARLY VISIBLE ON THE UPPER MORTAR BLOCKS (BELOW CENTER) UNION IRON WORKS, SAN FRANCISCO C-L. SEE CA-290-18 FOR A SIMILAR B&W NEGATIVE. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

149

Improving the Accuracy of Stamping Analyses Including Springback Deformations  

NASA Astrophysics Data System (ADS)

An accurate prediction of sheet metal deformation including springback is one of the main issues in an efficient finite element (FE) simulation in automotive and stamping industries. Considering tooling design for newer class of high-strength steels, in particular, this requirement became an important aspect for springback compensation practices today. The sheet deformation modeling accounting Bauschinger effect is considered to be a key factor affecting the accuracy of FE simulations in this context. In this article, a rate-independent cyclic plasticity model is presented and implemented into LS-Dyna software for an accurate modeling of sheet metal deformation in stamping simulations. The proposed model uses Hill's orthotropic yield surface in the description of yield loci of planar and transversely anisotropic sheets. The strain-hardening behavior is calculated based on an additive backstress form of the nonlinear kinematic hardening rule. The proposed model is applied in stamping simulations of a dual-phase steel automotive part, and comparisons are presented in terms of part strain and thickness distributions calculated with isotropic plasticity and the proposed model. It is observed that both models produce similar plastic strain and thickness distributions; however, there appeared to be considerable differences in computed springback deformations. Part shapes computed with both plasticity models were evaluated with surface scanning of manufactured parts. A comparison of FE computed geometries with manufactured parts proved the improved performance of proposed model over isotropic plasticity for this particular stamping application.

Firat, Mehmet; Karadeniz, Erdal; Yenice, Mustafa; Kaya, Mesut

2013-02-01

150

49. BOX STAMPING MACHINE Located in room above warehouse. The ...  

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

49. BOX STAMPING MACHINE Located in room above warehouse. The power unit is missing, but the drive belt is seen hanging from the overhead. Printing plate of desired labeling would be attached to the lower half drum. Upon rotation, labeling would be transferred to a cardboard box which was being held around the upper drum. - Hovden Cannery, 886 Cannery Row, Monterey, Monterey County, CA

151

Friction stir spot welding of hot-stamped boron steel  

SciTech Connect

Hot-stamped, boron steel was successfully joined via friction stir spot welding using polycrystalline cubic boron nitride tooling. The resulting microstructure, microhardness and mechanical properties are reported, including a brief look into failure mechanisms. Relationships between the unique mechanical mixing, phase transformations and failure initiation sites associated with joining martensitic steels are characterized.

Hovanski, Yuri; Santella, M. L.; Grant, Glenn J.

2007-11-01

152

Characterization of DC-STAMP+ Cells in Human Bone Marrow  

PubMed Central

Osteoclasts (OC), specialized cells derived from monocytes, maintain skeletal homeostasis under normal conditions but degrade bone in patients with rheumatoid (RA) and psoriatic arthritis (PsA). Monocytes initially develop in the bone marrow (BM), circulate in peripheral blood, and differentiate into distinct cell types with diverse functions. Imaging studies in (RA) patients and murine arthritis models demonstrate that bone marrow edema detected on MRI is the result of enhanced myelopoiesis which precedes the development of bone erosions detected on plain radiographs several years later. A major knowledge gap, however, is whether OC develop in the BM and circulate to the joint and if the differentiation to OC takes place in the joint space in response to differentiation signals such as RANKL and TNF. We have previously demonstrated that osteoclast precursors (OCP) are increased in the circulaton of patients with RA and PsA. We showed that DC-STAMP (Dendritic Cell-Specific Transmembrane protein), a 7-pass transmembrane protein expressed on the surface of monocytes, is essential for cell-to-cell fusion during OC differentiation and is a valid biomarker of OCP. Herein, we examined OCP in human bone marrow and identified one novel subset of DC-STAMP+CD45intermediate monocytes which was absent in the blood. We also found that OCPs reside in human BM with a higher frequency than in the peripheral blood. These findings support the notion that the BM is a major reservoir of circulating OCPs. In addition, we demonstrated that a higher frequency of DC-STAMP+ cells in the BM have detectable intracellular IFN-?, IL-4 and IL-17A than DC-STAMP+ cells circulating in the peripheral blood. Finally, the frequency of DC-STAMP+ monocytes and T cells is signficantly higher in PsA BM compared to healthy controls, suggesting an enhanced myelopoiesis is a central event in inflammatory arthritis. PMID:25419541

Chiu, Yahui Grace; Ritchlin, Christopher T

2014-01-01

153

Thermo fatigue cracking of die casting dies  

Microsoft Academic Search

The investigation of aluminium alloy die casting die failures was done with the emphasis on thermal cracks. The aim of the study was to prolog the in-service die life by cladding with maraging steels, which would be economically beneficial. A vast analysis of thermal fatigue cracks in aluminium alloy die casting is done. Immersion test apparatus was developed, which enables

D. Klob?ar; L. Kosec; B. Kosec; J. Tušek

2010-01-01

154

The effect of engineered surface texture on sheet aluminum formability  

Microsoft Academic Search

In industrial sheet metal forming many variables affect the stamping of an acceptable part. These include mechanical properties of the sheet metal, part design, die design, lubrication, stamping press, surface condition, etc. Attempts to control many of these variables have been made, but in general the sheet metal stamping process is still more art than science. Part and die design

Glenn William Jarvis

1998-01-01

155

Sputtered protective coatings for die casting dies  

NASA Technical Reports Server (NTRS)

This investigation determined whether selected ion beam sputtered coatings on H-13 die steel would have the potential of improving the thermal fatigue behavior of the steel used as a die in aluminum die casting. The coatings were selected to test candidate insulators and metals capable of providing protection of the die surface. The studies indicate that 1 micrometer thick W and Pt coatings reduced the thermal fatigue more than any other coating tested and are candidates to be used on a die surface to increase die life.

Mirtich, M. J.; Nieh, C. Y.; Wallace, J. F.

1981-01-01

156

Energy Consumption of Die Casting Operations  

SciTech Connect

Molten metal processing is inherently energy intensive and roughly 25% of the cost of die-cast products can be traced to some form of energy consumption [1]. The obvious major energy requirements are for melting and holding molten alloy in preparation for casting. The proper selection and maintenance of melting and holding equipment are clearly important factors in minimizing energy consumption in die-casting operations [2]. In addition to energy consumption, furnace selection also influences metal loss due to oxidation, metal quality, and maintenance requirements. Other important factors influencing energy consumption in a die-casting facility include geographic location, alloy(s) cast, starting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting machine, related equipment (robots, trim presses), and downstream processing (machining, plating, assembly, etc.). Each of these factors also may influence the casting quality and productivity of a die-casting enterprise. In a die-casting enterprise, decisions regarding these issues are made frequently and are based on a large number of factors. Therefore, it is not surprising that energy consumption can vary significantly from one die-casting enterprise to the next, and within a single enterprise as function of time.

Jerald Brevick; clark Mount-Campbell; Carroll Mobley

2004-03-15

157

Apparatus for restraining and transporting dies  

DOEpatents

Apparatus for restraining and transporting dies in punch press operations is provided. A floatation platen for supporting a die on the platen's upper surface has a plurality of recessed gas exhaust ports on the platen's lower surface. A source of pressurized gas delivers gas to a platen manifold, for delivery to orifices located in the gas exhaust ports. The flow of gas is controlled by a first valve adjacent the gas source and a second valve adjacent the manifold, with the second valve being used to control the gas flow during movement of the die. In this fashion, a die may be moved on a cushion of air from one workstation to a selected second workstation. A moveable hydraulically operated restraining fixture is also provided, for clamping the die in position during the compacting phase, and for releasing the die after completion of the compacting phase by releasing the hydraulic pressure on the restraining fixture. When pressure in the hydraulic cylinders on the restraining fixture is reversed, the restraining fixture will retract so that there is no contact between the die and the restraining fixture, thereby allowing the die to be removed from a first workstation and moved to a second selected workstation.

Allison, James W. (Monroeville, PA); LaBarre, Timothy L. (Pittsburgh, PA)

1994-01-01

158

CRCHD - Press Kit  

Cancer.gov

CRCHD - Press Kit Home News and Events Press Kit Health Disparities News & Articles E-bulletin News Stories & Interviews CRCHD Spotlights Meetings & Events Press Kit Press Kit To support outreach in the community,

159

The coupled thermo-mechanical-microstructural finite element modeling of hot stamping process in 22MnB5 steel  

NASA Astrophysics Data System (ADS)

In this study, a coupled thermo-mechanical-microstructural finite element model based on the subroutine of commercial software ABAQUS is developed to predict the hot stamping process in 22MnB5 steel. The Johnson-Mehl-Avrami-Kolmogorov type model with Scheil' additivity rule and Koistinen-Marburger model are adopted to simulate the diffusional phase transformation and diffusionless one respectively. During the calculation of temperature and stress/strain field, the contributions of microstructure evolution, e.g. transformation latent heat, transformation strain, and transformation plasticity are taken into account, which give more insight of the material response. The model allows to evaluate the transient stress and strain distributions, the final microstructure constituent and the final distortion of the sheet part during the press quenching process. The effect of transformation plasticity on the geometry precision and the residual stress are discussed.

Chen, Xiangjun; Xiao, Namin; Li, Dianzhong; Li, Guangyao; Sun, Guangyong

2013-12-01

160

An Intelligent Feature-Based Design for Stamping System  

Microsoft Academic Search

In this paper, an intelligent feature-based DFS (design for stamping) system has been proposed for implementing the stampability\\u000a evaluation. The work includes identification of the aims, criteria, and procedure of stampability evaluation, as well as the\\u000a formalisation of the stampability evaluation knowledge. The stampability evaluation has been oriented to part shape analysis\\u000a and cost estimation, based on features, and a

D.-B. Tang; L. Zheng; Z.-Z. Li

2001-01-01

161

18. DETAIL ELEVATION OF STAMP BATTERIES AND APRONS, LOOKING SOUTHEAST. ...  

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

18. DETAIL ELEVATION OF STAMP BATTERIES AND APRONS, LOOKING SOUTHEAST. MORTARS, BOSSES, MOST SHOES, STEMS, TAPPETS, CAMS AND BULL WHEELS ARE CLEARLY VISIBLE AND INTACT. NAMEPLATE CASTING IS CLEARLY VISIBLE ON THE UPPER MORTAR BLOCKS (BELOW CENTER) UNION IRON WORKS, SAN FRANCISCO C-L, SEE CA-290-45 (CT) FOR A SIMILAR COLOR TRANSPARENCY. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

162

Application of a dislocation based model for Interstitial Free (IF) steels to typical stamping simulations  

NASA Astrophysics Data System (ADS)

With a view to environmental, economic and safety concerns, car manufacturers need to design lighter and safer vehicles in ever shorter development times. In recent years, High Strength Steels (HSS) like Interstitial Free (IF) steels which have higher ratios of yield strength to elastic modulus, are increasingly used for sheet metal parts in automotive industry to meet the demands. Moreover, the application of sheet metal forming simulations has proven to be beneficial to reduce tool costs in the design stage and to optimize current processes. The Finite Element Method (FEM) is quite successful to simulate metal forming processes but accuracy largely depends on the quality of the material properties provided as input to the material model. Common phenomenological models roughly consist in the fitting of functions on experimental results and do not provide any predictive character for different metals from the same grade. Therefore, the use of accurate plasticity models based on physics would increase predictive capability, reduce parameter identification cost and allow for robust and time-effective finite element simulations. For this purpose, a 3D physically based model at large strain with dislocation density evolution approach was presented in IDDRG2009 by the authors [1]. This model allows the description of work-hardening's behavior for different loading paths (i.e. uni-axial tensile, simple shear and Bauschinger tests) taking into account several data from microstructure (i.e. grain size, texture, etc…). The originality of this model consists in the introduction of microstructure data in a classical phenomenological model in order to achieve work-hardening's predictive character for different metals from the same grade. Indeed, thanks to a microstructure parameter set for an Interstitial Free steel, it is possible to describe work-hardening behavior for different loading paths of other IF steels by only changing the mean grain size and the chemical composition. During sheet metal forming processes local material points may experience multi-axial and multi-path loadings. Before simulating actual industrial parts, automotive manufacturers use validation tools—e.g. the Cross-Die stamping test. Such typical stamping tests enable the evaluation of a complex distribution of strains. The work described is an implementation [2] of a 3D dislocation based model in ABAQUS/Explicit and its validation on a Finite Element (FE) Cross-Die model. In order to assess the performance and relevance of the 3D dislocation based model in the simulation of industrial forming applications, the results of thinning profiles predicted along several directions and the strain distribution were obtained and compared with experimental results for IF steels with grain sizes varying in the 8-22 ?m value range.

Carvalho Resende, T.; Balan, T.; Abed-Meraim, F.; Bouvier, S.; Sablin, S.-S.

2010-06-01

163

Villafranca Die Kabinete und die Revolutionen.  

E-print Network

dabei. Unter der Fahne der Nationalitäten flog der Kampf gegen die alten Throne durch die Länder von den Kampf vom 24. Juni, der Sturm der Rothen gegen die gemä�igten Republikaner, der socialen Clubs gegen die Verpfändung von Arenenberg und meines Grundbesitzes in der Schweiz. Au�erdem werden Sie drei Millionen Francs

Wagner, Stephan

164

Multi-step stamping tools design method based on springback compensation  

NASA Astrophysics Data System (ADS)

The aim of the paper is to present a springback compensation method specific to the manufacturing by multi-step sheet metal forming process of high precision thin metallic parts (called blades) produced for tire industry. The blades (typical dimensions: 50×20×0.5 mm) are produced by a non-conventional stamping process in several successive forming operations using a manual press without blank-holder. To produce the blades within a severe fixed tolerance (±0.05 mm), springback compensation has to be performed during the design stage of the forming tools. Thus, a numerical method based on springback compensation has been developed which consists on iteratively comparing a target part shape with a finite element-simulated part shape following forming and springback. The displacement vectors at each node of the elastically-driven change of the deformed mesh are used to adjust the trial tools design until the desired part shape is achieved. The Finite Element Analysis (FEA) regarding the springback prediction and compensation has been conducted using Abaqusin conjunction with Pythonscripting interface.

Azaouzi, M.; Rauchs, G.; Belouettar, S.

2011-05-01

165

An investigation of microstructure and grain-boundary evolution during ECA pressing of pure aluminum  

Microsoft Academic Search

High-purity aluminum (99.99 pct) was processed by equal-channel angular pressing (ECAP) at room temperature through a die\\u000a with a 90 deg angle between the die channels. Samples were examined by transmission electron microscopy (TEM) and orientation\\u000a imaging microscopy (OIM) methods after one, four, and 12 passes through the die. Repetitively pressed samples were rotated\\u000a by 90 deg in the same

S. D. Terhune; D. L. Swisher; K. Oh-Ishi; Z. Horita; T. G. Langdon; T. R. McNelley

2002-01-01

166

Fabrication of polyurethane molecular stamps for the synthesis of DNA microarray  

NASA Astrophysics Data System (ADS)

Polyurethane based on polypropylene glycol (PPG) and Toluene diisocyanate (TDI) using 3,3'-dichloride-4,4'- methylenedianiline (MOCA) as the crosslinker is presented for the first time to fabricate molecular stamps (PU stamps) for the synthesis of DNA microarray with contact procedure. The predictability of the process is achieved by utilizing commercially available starting materials. SEM analysis of the morphology of PU stamps and master showed that PU elastometer could replicate subtly the motherboard's patterns with high fidelity. It was proved from the contact angle measurement that PU stamps surface has good affinity with acetonitrile, which guarantee the well-distribution of DNA monomers on patterned stamps. Laser confocal fluorescence microscopy images of oligonucleotide arrays confirmed polyurethane is an excellent material for molecular stamps.

Liu, Zhengchun; He, Quanguo; Xiao, Pengfeng; He, Nongyao; Lu, Zuhong; Bo, Liang

2001-10-01

167

Minerals on postage stamps: A mix of art, history, economics and geography  

NASA Astrophysics Data System (ADS)

Most people would agree that minerals represent some of the most beautiful natural objects known to mankind, especially in the form of precious and semi-precious gemstones. It is hardly surprising, therefore, that they are often illustrated on stamps. Examples are the fine crystalline forms represented as coloured etchings in the French 1986 issue, and the stylized simplicity of the mineral stamps that were part of the Swiss Pro Patria series, issued annually between 1958 and 1961. I aim in this presentation to introduce the beautiful world of mineral illustrations on stamps. The talk cannot be comprehensive because of the very large number of minerals and stamps concerned, but it will introduce the range of minerals depicted on stamps, then look in some greater detail at several sets from France, Southern Africa and East Germany. Minerals become the subject of sets of stamps for many reasons. In many cases, it is part of an attempt by the particular national post office to depict the whole of the natural history of their country in stamp form - a statement of nationality and politics. The 1986 French issue was an example which followed sets of stamps that had already portrayed insects, flowers, trees and birds native to France. We also find that certain countries have produced several sets of stamps to mark the importance to their economy of mining particular minerals. Many African states depend upon minerals for much of their wealth and economic power, explaining why, for instance, Sierra Leone issued over 35 stamps on the subject of diamonds between 1965 and 1978, and why over 77% of mineral stamps come from countries with major mining interests. Countries with traditional links with the history of the study of geology and mining also produce mineral stamps. These are usually European countries with a long record of the study of the Earth, such as Germany and Switzerland. Curiously enough, though, despite its fine tradition of geological observation and research, the United Kingdom has never produced a stamp depicting rocks or minerals. It is often said that the study of stamps is a study of history, language, culture, art, geography and politics. If this is true for stamps in general, it is particularly true for minerals on stamps.

Glover, Paul

2010-05-01

168

Method for hot pressing irregularly shaped refractory articles  

DOEpatents

The present invention is directed to a method for hot pressing irregularly haped refractory articles with these articles of varying thickness being provided with high uniform density and dimensional accuracy. Two partially pressed compacts of the refractory material are placed in a die cavity between displaceable die punches having compact-contacting surfaces of the desired article configuration. A floating, rotatable block is disposed between the compacts. The displacement of the die punches towards one another causes the block to rotate about an axis normal to the direction of movement of the die punches to uniformly distribute the pressure loading upon the compacts for maintaining substantially equal volume displacement of the powder material during the hot pressing operation.

Steinkamp, William E. (Clinton, TN); Ballard, Ambrose H. (Knoxville, TN)

1982-01-01

169

26 UniPress 160/2014 Forschung Wenn Nanopartikel in der Lunge landen  

E-print Network

26 UniPress 160/2014 Forschung Wenn Nanopartikel in der Lunge landen Die Nanotechnologie ist ­ mit einem Gerät, das die menschliche Lunge nachahmt. Von Susanne Wenger Ein unscheinbarer Raum im Nano- partikeln auf die menschliche Lunge unter- sucht werden soll. Nanopartikel sind ultrakleine

Richner, Heinz

170

Die Medien in Mittelosteuropa  

Microsoft Academic Search

\\u000a In den mittelosteuropäischen Staaten beklagen sich die einheimischen Journalisten weniger über ihren mangelnden Einfluss auf\\u000a Politik und Gesellschaft als über die auch inhaltliche Dominanz westeuropäischer Medienkonzerne. Was in Rumänien die WAZ,\\u000a ist in Tschechien die Verlagsgruppe Passau. 85 Prozent des Medienmarktes in Osteuropa wird von ausländischem Kapital kontrolliert,\\u000a darunter drei Viertel von deutschem Kapital. Dabei wird gerne gefragt, wie die

Marc Stegherr; Kerstin Liesem

171

Charles Darwin University Press  

E-print Network

CDU Press Catalogue Charles Darwin University Press (CDU Press) (GLWHG E\\ -XGH &RQZD\\ 6WHS E\\ 6WHS Wildflowers Graham Brown CHARLES DARWIN UNIVERSITY PRESS #12;1 2 Welcome to Our Catalogue CDU Press is the academic publisher based on the Casuarina Campus of Charles Darwin University, Northern Territory

172

Die Deformation Measurement System during Sheet Metal Forming  

NASA Astrophysics Data System (ADS)

In order to reduce affection to the earth environment, it is necessary to lighten the vehicles. For this purpose, high tensile steels are applied. Because of high strength, high forming force is required for producing automotive sheet metal parts. In this situation, since the dies are elastic, they are deformed during forming parts. For reducing die developing period, sheet metal forming simulation is widely applied. In the numerical simulation, rigid dies are usually used for shortening computing time. It means that the forming conditions in the actual forming and the simulation are different. It will make large errors in the results between actual forming and simulation. It can be said that if contact pressure between dies and a sheet metal in the simulation can be reproduced in the actual forming, the differences of forming results between them can also been reduced. The basic idea is to estimate die shape which can produce the same distribution as computed from simulation with rigid dies. In this study, die deformation analyses with Finite Element Method as basic technologies are evaluated. For example, simple shape and actual dies elastic contact problems were investigated. The contact width between simple shape dies was investigated. The computed solutions were in good agreement with experimental results. The one case of the actual dies in two cases was also investigated. Bending force was applied to the blank holder with a mechanical press machine. The methodology shown with applying inductive displacement sensor for measuring die deformation during applying force was also proposed.

Funada, J.; Takahashi, S.; Fukiharu, H.

2011-08-01

173

Fast heating and cooling in nanoimprint using a spring-loaded adapter in a preheated press  

Microsoft Academic Search

By using a spring-loaded adapter, instant heating and cooling of wafer-type substrates was implemented in standard hot embossing equipment. This was possible by using the well-known concept of a clamped stack of stamp and substrate, pre-assembled in an alignment fixture. A number of thermoplastic and thermocurable resists were molded in an isothermal process with total press occupancy of one cycle

Helmut Schift; Sandro Bellini; Jens Gobrecht; Frank Reuther; Mike Kubenz; Morten Bo Mikkelsen; Konrad Vogelsang

2007-01-01

174

DC-STAMP, the key fusion-mediating molecule in osteoclastogenesis.  

PubMed

As a member of the mononuclear phagocyte system, osteoclasts (OC) absorb the bone matrix and participate in bone modeling by keeping a balance with osteoblasts (OB) and stromal cells. Mature OC derive from the fusion of mononuclear osteoclasts (mOC) and the fusion is considered as the indispensable process for the osteoclastogenesis and absorbing activity of OC. DC-STAMP (dendritic cell-specific transmembrane protein) has been validated playing a key role in the fusion of mOC. DC-STAMP is mainly expressed in OC, macrophages and dendritic cells (DC). While DC-STAMP was discovered in DC, more attentions have been paid to DC-STAMP in OC in this decade. This review will mainly focus on the function of DC-STAMP in OC. Studies on DC-STAMP in DC may also provide new sight for the study of DC-STAMP in OC. Since the function of DC-STAMP is still poorly understood and few studies have been implemented for illustration, many issues are still unknown and need to be revealed. We will also discuss these questions in this review. PMID:24420845

Zhang, Chengcheng; Dou, C E; Xu, Jianzhong; Dong, Shiwu

2014-10-01

175

For first time since 2007, food stamp use drops in state, Palm Beach County  

E-print Network

For first time since 2007, food stamp use drops in state, Palm Beach County March 13, 2013|By Donna in Palm Beach County fell in February, according to data from the Florida Department of Children from last year when the number of food stamp recipients in Palm Beach County jumped nearly 14 percent

Fernandez, Eduardo

176

Inside the War on Poverty: The Impact of Food Stamps on Birth Outcomes  

E-print Network

improved birth outcomes for both whites and African Americans, with larger impacts for births to AfricanInside the War on Poverty: The Impact of Food Stamps on Birth Outcomes Douglas Almond Columbia on Poverty: the roll out of the modern Food Stamp Program (FSP) during the 1960s and early 1970s. Using

Silver, Whendee

177

Stress Relaxation Testing of Stamped Metal Land-Grid-Array Sockets  

Microsoft Academic Search

Stress relaxation in stamped metal LGA sockets can result in a loss of normal force and an increase in contact resistance, potentially leading to a failure. This paper describes an approach for determining the risks from stress relaxation in stamped metal LGA sockets by taking into account the effect of Joule heating of the socket contacts. Stress relaxation data were

Vidyu Challa; Leoncio D. Lopez; Michael Osterman; Michael G. Pecht

2010-01-01

178

Texas Food Stamp Employment and Training/JOBS Conformance Demonstration: Process Evaluation Final Report.  

ERIC Educational Resources Information Center

A process evaluation was conducted of the Better Opportunities for New Directions (BOND) demonstration that tested the conformance between the Texas Food Stamp Employment and Training (E&T) and Job Opportunities and Basic Skills (JOBS) programs. JOBS policies and procedures were applied to eligible Food Stamp recipients; staff serving the two…

O'Shea, Daniel P.

179

Direct patterning of mammalian cells onto porous tissue engineering substrates using agarose stamps  

Microsoft Academic Search

This paper describes simple, inexpensive, and potentially generic methodology for generating patterns of mammalian cells on porous scaffolds for tissue engineering using replica printing. Circular patterns (diameter: 200, 700, and 1000?m) of human osteoblasts were transferred directly from topographically patterned agarose stamps onto porous hydroxyapatite scaffolds or onto fibronectin-coated glass slides. The use of hydrogel stamps provided a “wet”, biocompatible

Molly M. Stevens; Michael Mayer; Daniel G. Anderson; Douglas B. Weibel; George M. Whitesides; Robert Langer

2005-01-01

180

How to register for sports courses at ZHS 1 Check the offer! 2 Buy your sports stamp... 3 Register for the course... 4 Pick up your sports ID and stamp... and have fun!  

E-print Network

How to register for sports courses at ZHS 1 Check the offer! 2 Buy your sports stamp... 3 Register the offer! 2 Buy your sports stamp for the current semester online 3 Register for your course 4 4 Pick up the sports ID... Click here to buy the stamp for the students sports program of the current semester! #12;For

Cengarle, María Victoria

181

Coupled of thermal-mechanical-transformation numerical simulation on hot stamping with static explicit algorithm  

NASA Astrophysics Data System (ADS)

Thermal-mechanical-transformation coupled theoretical model for hot stamping and rheological behavior of high strength steel at elevated temperatures were obtained through non-isothermal and isothermal tensile tests respectively in this work. The static explicit finite element equations for hot stamping were proposed based on thermal-mechanical-transformation coupled constitutive laws and nonlinear, large deformation analysis. According to these equations, the hot stamping module of KMAS (King Mesh Analysis System) was developed for the numerical simulation of sheet metal forming at elevated temperatures. Afterwards, the hot stamping simulation of a typical B-pillar conducted by the KMAS software was compared to the experiment. The comparison consists of the following sides: temperature distribution, thickness distribution and martensite fraction. The good agreement between numerical simulation and the experiment confirms that the multi-field coupled constitutive laws and the KMAS software can predict hot stamping process accurately.

Hu, P.; Shi, D. Y.; Ying, L.; Shen, G. Z.; Chang, Y.; Liu, W. Q.

2013-05-01

182

Displaced capillary dies  

DOEpatents

An asymmetrical shaped capillary die made exclusively of graphite is used to grow silicon ribbon which is capable of being made into solar cells that are more efficient than cells produced from ribbon made using a symmetrically shaped die.

Kalejs, Juris P. (Wellesley, MA); Chalmers, Bruce (Falmouth, MA); Surek, Thomas (Englewood, CO)

1982-01-01

183

Displaced capillary dies  

DOEpatents

An asymmetrical shaped capillary die made exclusively of graphite is used to grow silicon ribbon which is capable of being made into solar cells that are more efficient than cells produced from ribbon made using a symmetrically shaped die.

Kalejs, Juris P. (Wellesley, MA); Chalmers, Bruce (Falmouth, MA); Surek, Thomas (Englewood, CO)

1984-01-01

184

A Path-Independent Forming Limit Criterion for Stamping Simulations  

SciTech Connect

Forming Limit Diagram (FLD) has been proved to be a powerful tool for assessing necking failures in sheet metal forming analysis for majority of stamping operations over the last three decades. However, experimental evidence and theoretical analysis suggest that its applications are limited to linear or almost linear strain paths during its deformation history. Abrupt changes or even gradual deviations from linear strain-paths will shift forming limit curves from their original values, a situation that occurs in vast majority of sequential stamping operations such as where the drawing process is followed by flanging and re-strike processes. Various forming limit models have been put forward recently to provide remedies for the problem, noticeably stress-based and strain gradient-based forming limit criteria. This study presents an alternative path-independent forming limit criterion. Instead of traditional Forming Limit Diagrams (FLD) which are constructed in terms of major - minor principal strains throughout deformation history, the new criterion defines a critical effective strain {epsilon}-bar* as the limit strain for necking, and it is shown that {epsilon}-bar* can be expressed as a function of current strain rate state and material work hardening properties, without the need of explicitly considering strain-path effects. It is given by {epsilon}-bar* = f({beta}, k, n) where {beta} = (d{epsilon}{sub 2}/d{epsilon}{sub 1}) at current deformation state, and k and n are material strain hardening parameters if a power law is assumed. The analysis is built upon previous work by Storen and Rice [1975] and Zhu et al [2002] with the incorporation of anisotropic yield models such as Hill'48 for quadratic orthotropic yield and Hill'79 for non-quadratic orthotropic yield. Effects of anisotropic parameters such as R-values and exponent n-values on necking are investigated in detail for a variety of strain paths. Results predicted according to current analysis are compared against experimental data gathered from literature and good agreements are achieved. This provides a powerful validation for this approach.The new criterion retains all the advantages of the traditional FLDs since it's still constructed in the strain space. Its relationship with stress-based forming limit criteria is discussed. It is believed that the approach is especially suitable for production stamping CAE analysis since the strain rate state at any material point during forming deformation is readily available from FEA simulations. It can be easily embedded in forming simulation software or alternatively deployed as a post-processing function for forming simulations.

Zhu Xinhai [Livermore Software Technology Co., Livermore, CA 94550 (United States); Chappuis, Laurent; Xia, Z. Cedric [Ford Motor Company, Dearborn, MI 48121 (United States)

2005-08-05

185

Die Coin Experiment  

NSDL National Science Digital Library

This resource consists of a Java applet and expository text. The applet simulates the experiment of rolling a die and then tossing a coin the number of times shown on the die. The die distribution and the probability of heads can be specified. The applet illustrates a two-stage experiment.

Siegrist, Kyle

186

Es lebe die Unverfrorenheit !\\  

Microsoft Academic Search

uber seine physikalische Interpr etation einer harmlos aus- sehenden, von ihn selbst zuvor aufgestellten Formel, die das spektrale Verhalten der sogenannten Warmestrahlung beschreibt. Maßgeblich durch das Eingreifen Albert Einsteins entwickelte sich daraus im folgenden Vierteljahrhundert eine fundamentale Krise der Physik, die dann in einer wissenschaftlichen Revolution großten Ausmaßes mundete: der Quantentheorie. Die Quantentheorie entwickelte sich von Anfang an diametral gegen

Domenico Giulini

187

Die Beratung der Gesellschaft  

Microsoft Academic Search

I. Es gibt viele strukturelle Eigenschaften, die die heraufziehende und von Manuel Castells und Niklas Luhmann diagnostizierte Computergesellschaft mit früheren Gesellschaften teilt. Das kann auch nicht weiter verwundern, denn die Gesellschaft ist, mit einem Begriff der Biologie, eine Einmalerfindung, deren basaler Formalismus derselbe bleibt, auch wenn er sich in den ver- schiedenen Epochen der oralen Stammesgesellschaft, der literalen Hochkultur, der

Dirk Baecker

188

Stamping failure analysis of advanced high strength steel sheet based on non-uniform local deformation through thickness  

NASA Astrophysics Data System (ADS)

The phenomenon "Shear fracture" is often observed in the stretch-bending process of stamping over small radius with advanced high strength steels (AHSS). It occurs parallel to and near the die radius in the stretch-bending test. Since traditional Forming Limit Diagram (FLD) is unable to describe this type of failure, experimental and simulation works were constructed in this paper to investigate and predict the shear fracture. Fracture experiments were carried out through a stretch-bending test system, and failure mode was observed. There is no obviously thinning at the shear fracture surface. Further research shows that the initial crack of shear fracture occurs at the outer layer of specimen at die radius position. Finite element (FE) models were built for stretch-bending test with 3D element. The non-uniform local deformation through thickness corresponding to bending position was obtained and analyzed. Cockcroft & Latham fracture criterion is used. The outer layer of specimen at bending position reaches the critical fracture state firstly, which agrees well with experiments. Different fracture criteria are also compared and selected to determine this fracture. Results show that based on the non-uniform local deformation, the initial crack location of shear fracture at small radius can be effectively predicted by fracture criteria related to the maximum principle stress.

Huang, Sheng; Zhao, Yixi; He, Chunfeng

2013-12-01

189

To Pluto by way of a postage stamp  

NASA Technical Reports Server (NTRS)

In this time of constrained budgets, the primary question facing planetary explorers is not 'Can we do it?' but 'Can we do it cheaply?' Taunted by words on a postage stamp, a group of mission designers at the Jet Propulsion Laboratory is struggling to find a cheap way to go to Pluto. Three primary goals were set by the science community: (1) imaging of Pluto and Charon, (2) mapping their surface composition, and (3) characterizing Pluto's atmosphere. The spacecraft will be designed around these primary goals. With the help of the Advanced Technology Insertion (ATI) process $5 million was alloted for two years to shop for lightweight components and subsystems using new technology never tried on a planetary mission. The process for this search and development is described.

Staehle, Robert L.; Terrile, Richard J.; Weinstein, Stacy S.

1994-01-01

190

Exponential model of strength-hardness mechanical properties analysis and numerical prediction in hot stamping  

NASA Astrophysics Data System (ADS)

Hot stamping is an advanced sheet forming technology integrating traditional forming and quenching technique for high strength and hardness simultaneously in the process. This paper has investigated the mechanical properties evolution history of hot stamping boron steel 22MnB5 with different cooling rates under non-isothermal quenching process. It has been conducted for analyzing the effect of divided stage cooling influences on the mechanical properties of 22MnB5 by the martensite transformation temperature point Ms. A series of tests were conducted using the divided stage cooling tool in order to acquire the cooling rates hardness, mechanical strength of different quenching process. The hardness-cooling rate exponential model and mechanical strength-hardness-cooling rate exponential model were established by using the dimensional analysis method and the inverse method based on numerical analysis software MATLAB. The model has been applied to the prediction simulation in the self-developed software KMAS_HF to validate the hardness and strength prediction in hot stamping. The typical U-shape hot stamping experiment was investigated for the numerical simulation of non-isothermal quenching process. The evaluation result shows that the model has a good reliability and applicability for predicting the hot stamping mechanical properties, which can be used to guide the optimization of hot stamping process and the design of hot stamping tools.

Dai, M. H.; Ying, L.; Fan, Z. S.; Hu, P.; Shi, D. Y.; He, B.

2013-05-01

191

Extracting Hot spots of Topics from Time Stamped Documents  

PubMed Central

Identifying time periods with a burst of activities related to a topic has been an important problem in analyzing time-stamped documents. In this paper, we propose an approach to extract a hot spot of a given topic in a time-stamped document set. Topics can be basic, containing a simple list of keywords, or complex. Logical relationships such as and, or, and not are used to build complex topics from basic topics. A concept of presence measure of a topic based on fuzzy set theory is introduced to compute the amount of information related to the topic in the document set. Each interval in the time period of the document set is associated with a numeric value which we call the discrepancy score. A high discrepancy score indicates that the documents in the time interval are more focused on the topic than those outside of the time interval. A hot spot of a given topic is defined as a time interval with the highest discrepancy score. We first describe a naive implementation for extracting hot spots. We then construct an algorithm called EHE (Efficient Hot Spot Extraction) using several efficient strategies to improve performance. We also introduce the notion of a topic DAG to facilitate an efficient computation of presence measures of complex topics. The proposed approach is illustrated by several experiments on a subset of the TDT-Pilot Corpus and DBLP conference data set. The experiments show that the proposed EHE algorithm significantly outperforms the naive one, and the extracted hot spots of given topics are meaningful. PMID:21765568

Chen, Wei; Chundi, Parvathi

2011-01-01

192

Extracting Hot spots of Topics from Time Stamped Documents.  

PubMed

Identifying time periods with a burst of activities related to a topic has been an important problem in analyzing time-stamped documents. In this paper, we propose an approach to extract a hot spot of a given topic in a time-stamped document set. Topics can be basic, containing a simple list of keywords, or complex. Logical relationships such as and, or, and not are used to build complex topics from basic topics. A concept of presence measure of a topic based on fuzzy set theory is introduced to compute the amount of information related to the topic in the document set. Each interval in the time period of the document set is associated with a numeric value which we call the discrepancy score. A high discrepancy score indicates that the documents in the time interval are more focused on the topic than those outside of the time interval. A hot spot of a given topic is defined as a time interval with the highest discrepancy score. We first describe a naive implementation for extracting hot spots. We then construct an algorithm called EHE (Efficient Hot Spot Extraction) using several efficient strategies to improve performance. We also introduce the notion of a topic DAG to facilitate an efficient computation of presence measures of complex topics. The proposed approach is illustrated by several experiments on a subset of the TDT-Pilot Corpus and DBLP conference data set. The experiments show that the proposed EHE algorithm significantly outperforms the naive one, and the extracted hot spots of given topics are meaningful. PMID:21765568

Chen, Wei; Chundi, Parvathi

2011-07-01

193

(silicon die) Die block A B  

E-print Network

, Coupled Logic) NMOS CMOS µ µ 4 ULSI VLSI µ () MOS (Metal, Oxide Semiconductor) ) (Complimentary MOS block A B Die #12; µ µ 3 #12;VLSI LSI MSI SSI TTL (Transistor, Transistor Logic) ECL (Emitter

Kavousianos, Xrysovalantis

194

Villafranca Die Kabinete und die Revolutionen.  

E-print Network

Carl heirathen könnte, obschon sie doch wei�, da� er es war, der ihr den Leutnant in der um Rahel oder der Ritter von der feurigen Rose um die schöne Kunijundes von der Blutburg?« »Ich kenn's nich leidet. Aber ich wei� mehr als sie Alle!« »Woher?« Die Frau war etwas verlegen und wandte den Kopf

Prodinger, Helmut

195

VIEW OF THE INSTALLATION OF AN EXTRUSION PRESS IN THE ...  

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

VIEW OF THE INSTALLATION OF AN EXTRUSION PRESS IN THE HIGH BAY AREA OF BUILDING 865. THE EXTRUSION PRESS WAS USED TO PRODUCE CYLINDRICAL BARS, HOLLOW TUBES, AND SHAPES WITH IRREGULAR CROSS-SECTIONS BY FORCING PREHEATED METAL THROUGH A DIE ORIFICE UNDER HIGH PRESSURE. (5/22/70) - Rocky Flats Plant, Metal Research & Development Laboratory, South of Central Avenue at south end of terminus of Ninth Avenue, Golden, Jefferson County, CO

196

Die singulation method  

DOEpatents

A method is disclosed for singulating die from a semiconductor substrate (e.g. a semiconductor-on-insulator substrate or a bulk silicon substrate) containing an oxide layer (e.g. silicon dioxide or a silicate glass) and one or more semiconductor layers (e.g. monocrystalline or polycrystalline silicon) located above the oxide layer. The method etches trenches through the substrate and through each semiconductor layer about the die being singulated, with the trenches being offset from each other around at least a part of the die so that the oxide layer between the trenches holds the substrate and die together. The trenches can be anisotropically etched using a Deep Reactive Ion Etching (DRIE) process. After the trenches are etched, the oxide layer between the trenches can be etched away with a HF etchant to singulate the die. A release fixture can be located near one side of the substrate to receive the singulated die.

Swiler, Thomas P [Albuquerque, NM; Garcia, Ernest J [Albuquerque, NM; Francis, Kathryn M [Rio Rancho, NM

2014-01-07

197

Reinraumtechnik für die Medizintechnik  

NASA Astrophysics Data System (ADS)

Die Reinraumtechnik ist heute ein unverzichtbarer Bestandteil bei der Fertigung von Produkten der Life Sciences, den Bereichen Pharma, Lebensmittel, Kosmetik und Medizintechnik. In Anbetracht der langen Historie der Medizintechnik ist sie jedoch eine sehr junge Disziplin. Die Bedeutung von Keimen und die richtige Einschätzung ihrer Größe wurden zwar sehr früh bereits durch Paracelsus erkannt, jedoch wurden daraus noch keine speziellen oder kontinuierlich umgesetzten Hygienevorschriften abgeleitet. Die erste bekannte technische Umsetzung von Hygieneempfehlungen geht auf den Franzosen François Nicolas Appert zurück, der eine aseptische Abfüllmethode für Lebensmittel entwickelte und diese 1810 veröffentlichte [1]. Die erste dokumentierte medizinische Umsetzung stellten Hygienevorschriften für Ärzte dar, die Ignaz Philipp Semmelweis nach 1847 in der Wiener Klinik für Geburtshilfe einführte [2].

Petek, Max; Jungbluth, Martin; Krampe, Erhard

198

Die singulation method  

DOEpatents

A method is disclosed for singulating die from a semiconductor substrate (e.g. a semiconductor-on-insulator substrate or a bulk silicon substrate) containing an oxide layer (e.g. silicon dioxide or a silicate glass) and one or more semiconductor layers (e.g. monocrystalline or polycrystalline silicon) located above the oxide layer. The method etches trenches through the substrate and through each semiconductor layer about the die being singulated, with the trenches being offset from each other around at least a part of the die so that the oxide layer between the trenches holds the substrate and die together. The trenches can be anisotropically etched using a Deep Reactive Ion Etching (DRIE) process. After the trenches are etched, the oxide layer between the trenches can be etched away with an HF etchant to singulate the die. A release fixture can be located near one side of the substrate to receive the singulated die.

Swiler, Thomas P.; Garcia, Ernest J.; Francis, Kathryn M.

2013-06-11

199

27 CFR 479.171 - Redemption of or allowance for stamps.  

Code of Federal Regulations, 2010 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Redemption of or Allowance for Stamps or Refunds § 479.171...

2010-04-01

200

27 CFR 479.171 - Redemption of or allowance for stamps.  

Code of Federal Regulations, 2012 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Redemption of or Allowance for Stamps or Refunds § 479.171...

2012-04-01

201

27 CFR 479.36 - The special tax stamp, receipt for special (occupational) taxes.  

Code of Federal Regulations, 2010 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Special (Occupational) Taxes § 479.36 The special tax stamp,...

2010-04-01

202

27 CFR 479.171 - Redemption of or allowance for stamps.  

Code of Federal Regulations, 2011 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Redemption of or Allowance for Stamps or Refunds § 479.171...

2011-04-01

203

27 CFR 479.36 - The special tax stamp, receipt for special (occupational) taxes.  

Code of Federal Regulations, 2013 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Special (Occupational) Taxes § 479.36 The special tax stamp,...

2013-04-01

204

27 CFR 479.171 - Redemption of or allowance for stamps.  

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Redemption of or Allowance for Stamps or Refunds § 479.171...

2014-04-01

205

27 CFR 479.36 - The special tax stamp, receipt for special (occupational) taxes.  

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Special (Occupational) Taxes § 479.36 The special tax stamp,...

2014-04-01

206

27 CFR 479.36 - The special tax stamp, receipt for special (occupational) taxes.  

Code of Federal Regulations, 2011 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Special (Occupational) Taxes § 479.36 The special tax stamp,...

2011-04-01

207

27 CFR 479.36 - The special tax stamp, receipt for special (occupational) taxes.  

Code of Federal Regulations, 2012 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Special (Occupational) Taxes § 479.36 The special tax stamp,...

2012-04-01

208

27 CFR 479.171 - Redemption of or allowance for stamps.  

Code of Federal Regulations, 2013 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Redemption of or Allowance for Stamps or Refunds § 479.171...

2013-04-01

209

31 CFR 500.410 - Currency, coins, and postage and other stamps.  

Code of Federal Regulations, 2010 CFR

...Currency, coins, and postage and other stamps issued by North Korea, North Viet-Nam, Cambodia, or South Viet-Nam are merchandise of North Korean, North Vietnamese, Cambodian, or South Vietnamese origin subject to §...

2010-07-01

210

Nondestructive forensic analysis of antique stamps by use of synchrotron radiation infrared spectromicroscopy  

E-print Network

Nondestructive forensic analysis of antique stamps by use of synchrotron radiation infraredEnergy Sciences, Materials Science Division, of the U. S. Department of Energy under Contract No. DE-ACO3-76SF

211

Liquid-Metal-Induced Embrittlement of Zn-Coated Hot Stamping Steel  

NASA Astrophysics Data System (ADS)

Liquid-metal-induced embrittlement (LMIE) of galvanized hot stamping steel occurs due to the simultaneous application of stress and the presence of a liquid Zn surface layer during the hot stamping process. The mechanism specific to the liquid metal induced embrittlement occurring during hot stamping was investigated in detail. It was found that when a tensile stress was applied, liquid Zn could penetrate along grain boundaries in the steel matrix at temperatures above the Liquid + ?-Fe (Zn) ? ?1 peritectic transformation temperature of 1055 K (782 °C). The results show that an increase of the annealing time prior to hot stamping is an effective way to prevent LMIE by the elimination of the liquid phase.

Lee, Chang Wook; Fan, Dong Wei; Sohn, Il Ryoung; Lee, Seok-Jae; De Cooman, Bruno C.

2012-12-01

212

Structural and magnetic characterizations of high moment synthetic antiferromagnetic nanoparticles fabricated using self-assembled stamps  

PubMed Central

High-moment synthetic antiferromagnetic (SAF) nanoparticles were produced using 4 in. diameter stamps made by self-assembly and nanosphere lithography of latex nanospheres. This leads to a significant increase in particle yield over a pre-existing technique which utilizes a 1 cm2 stamp patterned using e-beam lithography. Changes in nanopillar dimensions from the self-assembled stamps and variations in the associated processing conditions can lead to the fabrication of particles with different dimensions. We demonstrate that it is possible to produce reasonably uniformly sized SAFs with diameters from 70 nm upward using self-assembled stamps. The particles exhibit low remanence at low externally applied magnetic fields, and that the saturation magnetization more than double that for conventional iron oxide nanoparticles. PMID:20531978

Koh, Ai Leen; Hu, Wei; Wilson, Robert J.; Earhart, Christopher M.; Wang, Shan X.; Sinclair, Robert

2010-01-01

213

25 CFR 301.1 - Eligibility for use of Government stamp.  

Code of Federal Regulations, 2011 CFR

...Section 301.1 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER AND TURQUOISE PRODUCTS; STANDARDS § 301.1 Eligibility for use of Government stamp. Subject to the detailed requirements that...

2011-04-01

214

25 CFR 301.1 - Eligibility for use of Government stamp.  

Code of Federal Regulations, 2012 CFR

...Section 301.1 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER AND TURQUOISE PRODUCTS; STANDARDS § 301.1 Eligibility for use of Government stamp. Subject to the detailed requirements that...

2012-04-01

215

25 CFR 301.1 - Eligibility for use of Government stamp.  

Code of Federal Regulations, 2010 CFR

...Section 301.1 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER AND TURQUOISE PRODUCTS; STANDARDS § 301.1 Eligibility for use of Government stamp. Subject to the detailed requirements that...

2010-04-01

216

25 CFR 301.1 - Eligibility for use of Government stamp.  

...Section 301.1 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER AND TURQUOISE PRODUCTS; STANDARDS § 301.1 Eligibility for use of Government stamp. Subject to the detailed requirements that...

2014-04-01

217

25 CFR 301.1 - Eligibility for use of Government stamp.  

Code of Federal Regulations, 2013 CFR

...Section 301.1 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER AND TURQUOISE PRODUCTS; STANDARDS § 301.1 Eligibility for use of Government stamp. Subject to the detailed requirements that...

2013-04-01

218

Extrusion die and method  

DOEpatents

A method and die apparatus for manufacturing a honeycomb body of rhombic cell cross-section by extrusion through an extrusion die of triangular cell discharge slot configuration, the die incorporating feedholes at selected slot intersections only, such that slot segments communicating directly with the feedholes discharge web material and slot segments not so connected do not discharge web material, whereby a rhombic cell cross-section in the extruded body is provided.

Lipp, G. Daniel (Painted Post, NY)

1994-04-26

219

Sputtered protective coatings for die casting dies  

NASA Technical Reports Server (NTRS)

Three experimental research designs investigating candidate materials and processes involved in protective die surface coating procedures by sputter deposition, using ion beam technologies, are discussed. Various pre-test results show that none of the coatings remained completely intact for 15,000 test cycles. The longest lifetime was observed for coatings such as tungsten, platinum, and molybdenum which reduced thermal fatigue, but exhibited oxidation and suppressed crack initiation only as long as the coating did not fracture. Final test results confirmed earlier findings and coatings with Pt and W proved to be the candidate materials to be used on a die surface to increase die life. In the W-coated specimens, which remained intact on the surface after thermal fatigue testing, no oxidation was found under the coating, although a few cracks formed on the surface where the coating broke down. Further research is planned.

Mirtich, M. J.; Nieh, C.-Y.; Wallace, J. F.

1981-01-01

220

Watching the Clocks: The Role of Food Stamp Recertification and TANF Time Limits in Caseload Dynamics  

Microsoft Academic Search

We use administrative data to examine how ‘‘clock’’ policies—program time limits and recurring deadlines for confirming eligibility—affected participation in South Carolina’s TANF and Food Stamp Programs from 1996-2003. South Carolina’s TANF program limits most families to two years of benefits in any ten-year period; so, recipients began exhausting their eligibility as early as 1998. The state’s Food Stamp Program sets

David C. Ribar; Marilyn Edelhoch; Qiduan Liu

2008-01-01

221

Nanotransfer Printing Using Plasma Etched Silicon Stamps and Mediated by In-Situ Deposited Fluoropolyme  

SciTech Connect

This communication describes a simple method that uses a thin film of octafluorocyclobutane (OFCB) polymer for efficient nanoscale transfer printing (nTP). Plasma polymerization of OFCB produces a Teflon-like fluoropolymer which strongly adheres and conformally covers 3-D inorganic stamp. The inherently low surface energy of in-situ deposited OFCB polymer on nanoscale silicon features is demonstrated as a unique nanocomposite stamp to fabricate various test structures with improved nTP feature resolution down to sub 100 nm.

Bhandari, Deepak [ORNL; Kravchenko, Ivan I [ORNL; Lavrik, Nickolay V [ORNL; Sepaniak, Michael J [ORNL

2011-01-01

222

A novel solution-stamping process for preparation of a highly conductive aluminum thin film.  

PubMed

A novel solution-stamping process for the preparation of a highly conductive aluminum thin film on both rigid and flexible substrates is proposed. The superior electrical properties of Al thin films fabricated by the solution-stamping process compared to silver and gold films fabricated from colloidal nanoparticles are experimentally demonstrated, and their applications in electronic circuits on rigid and flexible substrates and to organic light-emitting diodes (OLEDs) are investigated. PMID:22052580

Lee, Hye Moon; Choi, Si-Young; Kim, Kyung Tae; Yun, Jung-Yeul; Jung, Dae Soo; Park, Seung Bin; Park, Jongwook

2011-12-01

223

A new instrument for automated microcontact printing with stamp load adjustment  

NASA Astrophysics Data System (ADS)

An instrument for automated microcontact printing (?CP) on microscope slides is described. The movement of the stamp, which is actuated by a computer controlled pneumatic actuator, is precisely guided until it makes contact with the substrate. As a consequence, the absolute position of the microprinted patterns is reproducible over a series of substrates with 1?m standard deviation. Exchange of substrates and stamps is a quick and simple procedure. This makes possible the microprinting of adjacent or superimposable patterns, with different products, in a reproducible manner. Furthermore, a novel approach is described for adjusting the load on the stamp during contact. Two adjustable screws are set up so that their length (with reference to the substrate holder) limits the stamp compression during contact. The load on the stamp is proportional to the stamp compression and from the experimental point of view, this is controlled by the operator adjusting the screws. This makes possible the ?CP with stamps incorporating large surface features as well as stamps with isolated features raised on the surface. For proof of concept, automated ?CP of a single parallelepiped polydimethylsiloxane feature, with a surface of 2cm ×30?m and a height of 25?m, is demonstrated inside a microfluidic channel without roof collapse. A second example is provided with a single cross feature, possessing an overall surface of 140×140?m2 and a height of 14?m. Potential applications of this versatile, inexpensive and compact instrument are discussed. The machine's potential for high throughput also makes it suitable for mass production applications.

Bou Chakra, Elie; Hannes, Benjamin; Dilosquer, Gilles; Mansfield, Colin D.; Cabrera, Michel

2008-06-01

224

Micro-patterned cell-sheets fabricated with stamping-force-controlled micro-contact printing.  

PubMed

Cell-sheet-engineering based regenerative medicine is successfully applied to clinical studies, though cell sheets contain uniformly distributed cells. For the further application to complex tissues/organs, cell sheets with a multi-cellular pattern were highly demanded. Micro-contact printing is a quite useful technique for patterning proteins contained in extracellular matrix (ECM). Because ECM is a kind of cellular adherent molecules, ECM-patterned cell culture surface is capable of aligning cells on the pattern of ECM. However, a manual printing is difficult, because a stamp made from polydimethylsiloxane (PDMS) is easily deformed, and a printed pattern is also crushed. This study focused on the deformability of PDMS stamp and discussed an appropriate stamping force in micro-contact printing. Considering in availability in a medical or biological laboratory, a method for assessing the stamp deformability was developed by using stiffness measurement with a general microscope. An automated stamping system composed of a load cell and an automated actuator was prepared and allowed to improve the quality of stamped pattern by controlling an appropriate stamping force of 0.1 N. Using the system and the control of appropriate stamping force, the pattern of 8-mm-diameter 80-?m-stripe fibronectin was fabricated on the surface of temperature-responsive cell culture dish. After cell-seeding and cell culture, a co-culture system with the micro-pattern of both fibroblasts and endothelial cells was completed. Furthermore, by reducing temperature to 20 °C, the co-cultured cell sheet with the micro-pattern was successfully harvested. As a result, the method would not only provide a high-quality ECM pattern but also a breakthrough technique to fabricate multi-cellular-patterned cell sheets for the next generation of regenerative medicine and tissue engineering. PMID:25239040

Tanaka, Nobuyuki; Ota, Hiroki; Fukumori, Kazuhiro; Miyake, Jun; Yamato, Masayuki; Okano, Teruo

2014-12-01

225

Regulation of Human Osteoclast Development by Dendritic Cell-Specific Transmembrane Protein (DC-STAMP)  

PubMed Central

Osteoclasts (OC) are bone-resorbing, multinucleated cells that are generated via fusion of OC precursors (OCP). The frequency of OCP is elevated in patients with erosive inflammatory arthritis and metabolic bone diseases. Although many cytokines and cell surface receptors are known to participate in osteoclastogenesis, the molecular mechanisms underlying the regulation of this cellular transformation are poorly understood. Herein, we focused our studies on the dendritic cell-specific transmembrane protein (DC-STAMP), a seven-pass-transmembrane receptor-like protein known to be essential for cell-to-cell fusion during osteoclastogenesis. We identified an immunoreceptor tyrosine-based inhibitory motif (ITIM) in the cytoplasmic tail of DC-STAMP, and developed an anti-DC-STAMP monoclonal antibody 1A2 that detected DC-STAMP expression on human tumor giant cells, blocked OC formation in vitro, and distinguished four patterns of human PBMC with a positive correlation to OC potential. In freshly isolated monocytes, DC-STAMPhigh cells produced a higher number of OC in culture than DC-STAMPlow cells and the surface expression of DC-STAMP gradually declined during osteoclastogenesis. Importantly, we showed that DC-STAMP is phosphorylated on its tyrosine residues and physically interacts with SHP-1 and CD16, an SH2-domain-containing tyrosine phosphatase and an ITAM-associated protein, respectively. Taken together, these data show that DC-STAMP is a potential OCP biomarker in inflammatory arthritis. Moreover, in addition to its effect on cell fusion, DC-STAMP dynamically regulates cell signaling during osteoclastogenesis. PMID:21987375

Chiu, Ya-Hui; Mensah, Kofi A.; Schwarz, Edward M.; Ju, Yawen; Takahata, Masahiko; Feng, Changyong; McMahon, Loralee A.; Hicks, David G.; Panepento, Ben; Keng, Peter C.; Ritchlin, Christopher T.

2011-01-01

226

Time-stamped cross-coupled control in networked CNC systems  

Microsoft Academic Search

This paper proposes a time-stamped cross-coupled control (TSCCC) algorithm to deal with the asynchronous sampling and network-induced delays in networked computer numerical control (CNC) machines. It uses time-stamps to estimate the network-induced delays from the sampling instants of different axes to the controller node. The network-induced delays are considered for accurately estimating the contour error in real-time. Furthermore, a networked

Xiong Xu; Xinjun Sheng; Zhenhua Xiong; Xiangyang Zhu

2011-01-01

227

An easy method for preparation of postage stamp autografts.  

PubMed

A modified technique of postage stamp autografting is studied. By using quick cutting plates, chessboard tray, skiing technique and petrolatum gauze, skin islands can be uniformly located and correctly oriented on the gauze. Moving the skin squares on the stainless steel tray is relatively easy, and the expansion ratio can be predicted by means of the chessboard diagram. The skin island grafts adhere to the petrolatum gauze when the gauze is applied to the tray. Then, as in the modified Meek technique, the "autografting carrier" can be used to cover the burn wound. In comparison with the modified Meek technique, this method does not require expensive equipment. The quick cutting plates can take over the function of the modified Meek-Wall dermatome. The stainless steel trays and the petrolatum gauze are easily available. The advantages of this method include: (1) the expansion ratio can reach up to 1:9, (2) the preparation procedures are not time consuming, (3) regular distribution of these skin islands shortens the healing time, and (4) the cost of this method is relative low. The results of this technique are comparable to that of the modified Meek technique. This preliminary study reveals that this technique is an easy and economic alternative for the treatment of extensive burn patients. PMID:11024609

Lee, S S; Tsai, C C; Lai, C S; Lin, S D

2000-12-01

228

Postage stamp multiple anterior capsulorhexisotomies in pediatric cataract surgery  

PubMed Central

Background Capsule related complications are common following pediatric cataract surgery. We report a new technique of multiple anterior capsulorhexisotomies after lens aspiration and intraocular lens (IOL) implantation. Methods After performing automated lens aspiration, an IOL was implanted into the capsular bag. A bent 26 gauge needle was introduced through one side port and multiple small cuts were made in one half of the circumference of the anterior capsular rim by making a radial movement of the needle tip centripetally over the margin of the anterior capsular rim. The needle was again introduced through the other side port and multiple similar cuts were made in the other half thereby creating nearly 20 – 30 cuts at the margin of the anterior capsular rim. Results The mean size of the primary capsulorhexis was 4.33 ± 0.20 mm. A uniform enlargement of the capsulorhexis could be performed in all the eyes without peripheral extension in any of the eyes. There was no damage to the posterior capsule and no scratch mark on the IOL. In one eye, the primary capsulorhexis was slightly eccentric, though it was covering the IOL optic all around. The rhexisotomies in this eye were limited to the capsular rim that was overlapping more on the IOL optic (sectoral anterior capsulorhexisotomies). Conclusion The technique of postage stamp anterior capsulorhexisotomies is a feasible technique in pediatric cataracts. PMID:15752433

Titiyal, Jeewan S; Sinha, Rajesh; Sharma, Namrata; Vajpayee, Rasik B

2005-01-01

229

Die Darwinsche Theorie und die Eukaryoten  

E-print Network

Geologe Charles Darwin 1859 in der Darwin Theorie. 6.1 Die Darwin-Theorie der Evolution Lebewesen kämpfen Darwin-Theorie zugrunde liegt, bereits in der präbiotischen Welt. Dort trägt es zur chemischen Evolution eine gewaltige Evolution statt. Diese Entwicklung des Lebens beschrieb der englische Biologe und

Ulmschneider, Peter

230

Micromechanical die attachment surcharge  

DOEpatents

An attachment structure is disclosed for attaching a die to a supporting substrate without the use of adhesives or solder. The attachment structure, which can be formed by micromachining, functions purely mechanically in utilizing a plurality of shaped pillars (e.g. round, square or polygonal and solid, hollow or slotted) that are formed on one of the die or supporting substrate and which can be urged into contact with various types of mating structures including other pillars, a deformable layer or a plurality of receptacles that are formed on the other of the die or supporting substrate, thereby forming a friction bond that holds the die to the supporting substrate. The attachment structure can further include an alignment structure for precise positioning of the die and supporting substrate to facilitate mounting the die to the supporting substrate. The attachment structure has applications for mounting semiconductor die containing a microelectromechanical (MEM) device, a microsensor or an integrated circuit (IC), and can be used to form a multichip module. The attachment structure is particularly useful for mounting die containing released MEM devices since these devices are fragile and can otherwise be damaged or degraded by adhesive or solder mounting.

Filter, William F. (Albuquerque, NM); Hohimer, John P. (Albuquerque, NM)

2002-01-01

231

Extrusion die and method  

DOEpatents

A method and die apparatus for manufacturing a honeycomb body of triangular cell cross-section and high cell density, the die having a combination of (i) feedholes feeding slot intersections and (ii) feedholes feeding slot segments not supplied from slot intersections, whereby a reduction in feedhole count is achieved while still retaining good extrusion efficiency and extrudate uniformity.

Lipp, G. Daniel (Painted Post, NY)

1994-05-03

232

The Global University Press  

ERIC Educational Resources Information Center

The modern world's understanding of American university press has long been shaped by university-press books. American university-press books are good international advertisements for the universities whose logos grace their spines. The growth of transnational scholarship and the expansion of digital communications networks are converging in ways…

Dougherty, Peter J.

2012-01-01

233

Die Anwendung des Logit Modells auf die Daten der  

E-print Network

. . . . . . . . . . . . . . . . . . . . . . . . . . 4 4.1 Space Shuttle: Orbiter, externer Brennstofftank, Raketentriebwerke, Field JointsDie Anwendung des Logit Modells auf die Daten der Challenger-Katastrophe Bachelorarbeit Stefanie 15 4.1 Technische Aspekte der Challenger . . . . . . . . . . . . . . . . . . . . . . . 15 4.2 Die

234

The Adoption of Electronic Benefit Transfer Card for Delivering Food Stamp Benefits in Alabama: Perceptions of College Students Participating in the Food Stamp Program  

ERIC Educational Resources Information Center

The reasons for moving from paper coupons to delivering food stamps electronically include potential reduction in the cost of administering the system and in fraud, theft and abuse of the system. Furthermore, the use of EBT is believed o reduce social stigma and embarrassment felt by recipients when using paper coupon. Therefore, using survey data…

Zekeri, Andrew A.

2004-01-01

235

Nanoscale patterning of organic monolayers by catalytic stamp lithography: scope and limitations.  

PubMed

Developing a method to pattern organic molecules, particularly on the sub-100-nm scale, is of wide interest in current nanoscience for a broad range of technological applications. Because of the efficiency and simplicity of soft lithography, here we describe in detail the process for synthesizing and applying catalytic stamp lithography, a process that can easily produce sub-100-nm patterns on surfaces; in this work, the approach is demonstrated on silicon. Catalytic stamps were fabricated through a two-step procedure in which the nanoscale pattern of catalysts is produced via a self-assembled block-copolymer-templated synthesis of metallic nanostructures on SiO(x)/Si supports, followed by the production of the poly(dimethylsiloxane) (PDMS) stamp on top of the as-patterned metals. Simply peeling off the as-formed PDMS stamp removes the metallic nanostructures, leading to the functional stamp. Two different patterns, pseudohexagonal and linear Pt nanoarrays, were produced from a single block copolymer, PS(125000)-b-P2VP(58500), by controlling the morphology of thin-film templates through tetrahydrofuran vapor annealing. When terminal alkenes, alkynes, or aldehydes with different functionalities were used as molecular inks, these Pt nanopatterns on catalytic stamps were translated into corresponding molecular arrays on Si(111)-H and Si(100)-H(x) surfaces because catalytic hydrosilylation took place exclusively underneath patterned Pt nanostructures. With this straightforward approach, the resolution limit of conventional microcontact printing (approximately 100 nm) could be downsized to a sub-20-nm scale, while maintaining the advantages of stamp-based patterning (i.e., large-area, high-throughput capabilities and low cost). PMID:20356148

Mizuno, Hidenori; Buriak, Jillian M

2009-12-01

236

K2CO3 catalysis on the reactivity of top charged coke and stamp charged coke  

NASA Astrophysics Data System (ADS)

The catalysis of K2CO3 on the reactivity of top charged coke and stamp charged coke from Pansteel in China was studied. The coke reaction index of the stamp charged coke was 1%-2% higher than that of the top charged coke. Under the catalysis of K2CO3, the coke reaction index of both cokes approximately increased by 4%, 6%, 10% and 6% at 900, 1000, 1100 and 1200°C, respectively. The reactivity of the K-enriched stamp charged coke was 1%-2% higher than that of the K-enriched top charged coke below 1100°C. However, only negligible differences were found in the temperature zone between 1100 and 1200°C. Scanning electron microscopy images illustrated that pores in the top charged coke were smaller and equally distributed, while relatively more big pores exist non-homogenously in stamp charged coke. Due to the different processes in production, the stamp charged coke was more porous and most of the pores tended to be applanate. Cracks were observed in the microstructure of the stamp charged coke during the carbon solution reaction, implying the inferior quality of the stamp charged coke to the top charged coke at high temperature. Diffusion of K during the carbon solution reaction was studied by the energy dispersive spectrometry. It is found that K gradually spreads into the center of lumpy coke with the rising of temperature and is equally distributed on the edges of pores at 1200°C. Besides, oxidation reactions of functional groups become faster with the catalysis of K.content

Pang, Qing-hai; Zhang, Jian-liang; Qi, Cheng-lin; Ma, Chao; Kong, De-wen; Mao, Rui

2013-01-01

237

Spectral database for postage stamps by means of FT-IR spectroscopy.  

PubMed

A Fourier transform infrared (FT-IR) spectroscopy study on the entire Italian postage stamps production is presented in this work. Crossing 150 years of issues from the unification of Italy until today, a time line of the major components constituting the stamps has been defined, based on the wide spectral database built on the basis of the numerous analyzed exemplars. Even though it is easy to find reports about stamps' issues history, information arising from these investigations contributes to throw light upon the substances incorporated in the stamps, which could be described as hybrid or composite materials (a sort of undisclosed or hidden story). As a result of the whole spectra acquired in attenuated total reflectance (ATR) mode, changes in paper composition showed the transition from the protein sizing glue to starch sizing; also the employment of kaolin varied through time. First it was used as the extender in the pigment-medium mixture, and finally it constituted the coating on the stamp surface. Also the chemical composition of the adhesive gum on the rear side of stamps has been subjected to modifications, as well as the front side. The earliest back glue was a protein-based adhesive; then it was replaced by gum arabic first and by poly(vinyl acetate) (PVAC) later. FT-IR spectroscopy, supported by the detailed database developed, has been applied, for the first time, in the very useful detection of two counterfeit samples: a fake of the famous Gronchi Rosa, issued in 1961, and a regummed 2 cent red stamp, issued in 1865. The information held in the whole spectral data has been selected and employed in the principal component analysis (PCA) statistical analysis. PMID:23829324

Imperio, Eleonora; Giancane, Gabriele; Valli, Ludovico

2013-08-01

238

THE STAMP TEST DELIVERS THE MESSAGE ON ERECTILE DYSFUNCTION FOLLOWING HIGH DOSE IMRT FOR PROSTATE CANCER  

PubMed Central

Objectives To evaluate erectile function following high dose radiotherapy for prostate cancer using the international index of erectile function (IIEF), expanded prostate cancer index composite (EPIC), and stamp test. Methods Men with favorable and intermediate risk prostate cancer were assigned to receive prostate intensity modulated radiotherapy (IMRT) vs. an erectile tissue-sparing IMRT technique on a phase III randomized prospective study. The stamp test, IIEF, and EPIC questionnaires were completed at baseline, 6 months, one year, and two years after IMRT. Sexual Health Inventory for Men (SHIM) scores were abstracted from IIEF questionnaires. A partner questionnaire, designated IIEF-P, modeled after the IIEF but from the perspective of the partner, was collected. Results Ninety four men enrolled on the trial who completed at least one questionnaire or one stamp test were analyzed. The median age of the patient population was 62.5 years. The median RT dose was 76 Gy (range: 74–80 Gy). At 6-months and one year after high-dose IMRT, a positive stamp result significantly correlated with median EPIC sexual summary, sexual function (EF), and bother subscale scores. Additionally, 6-months after IMRT the stamp test correlated with median IIEF, IIEF EF domain, and SHIM scores. Robust concordance for the IIEF and SHIM results was appreciated between responding patients: partner pairs. Conclusions Nocturnal tumescence indicated by a positive stamp test correlates well with established quality of life questionnaires after IMRT. The stamp test should strongly be considered as an objective measure of erectile function in future studies of ED in prostate cancer patients. PMID:22749428

Keller, Lanea M. M.; Buyyounouski, Mark K.; Sopka, Dennis; Ruth, Karen; Klayton, Tracy; Pollack, Alan; Watkins-Bruner, Deborah; Greenberg, Richard; Price, Robert; Horwitz, Eric M

2012-01-01

239

Method for hot press forming articles  

DOEpatents

This disclosure relates to an improved method for achieving the best bond strength and for minimizing distortion and cracking of hot pressed articles. In particular, in a method for hot press forming both an outer facing circumferential surface of and an inner portion of a hub, and of bonding that so-formed outer facing circumferential surface to an inner facing circumferential surface of a pre-formed ring thereby to form an article, the following improvement is made. Normally, in this method, the outside ring is restrained by a restraining sleeve of ring-shaped cross-section having an inside diameter. A die member, used to hot press form the hub, is so-formed as to have an outside diameter sized to engage the inside diameter of the restraining sleeve in a manner permitting relative movement therebetween. The improved method is one in which several pairs of matched restraining sleeve and die member are formed with each matched pair having a predetermined diameter. The predetermined diameter of each matched pair is different from another matched pair by stepped increments. The largest inside diameter of a restraining sleeve is equal to the diameter of the outer facing circumferential surface of the hub. Each pair of the matched restraining sleeve and die member is used to form an article in which an inside hub is bonded to an outside ring. The several samples so-formed are evaluated to determine which sample has the best bond formed between the hub and the ring with the least or no cracking or distortion in the ring portion of the article. Thereafter, the matched restraining sleeve and die member which form the article having the best bonding characteristics and least distortion cracking is then used for repeated formations of articles.

Baker, Robert R. (Livonia, MI); Hartsock, Dale L. (Livonia, MI)

1982-01-01

240

Enhanced texture in die-upset nanocomposite magnets by Nd-Cu grain boundary diffusion  

NASA Astrophysics Data System (ADS)

Bulk anisotropic nanocomposite Nd2Fe14B/?-Fe magnets were prepared by hot pressing and die upsetting coupled with Nd-Cu grain boundary diffusion. The hot workability of nanocomposite magnets is enhanced dramatically by grain boundary diffusion of low melt point Nd-Cu alloy, resulting in a strong anisotropy by die upsetting. The microstructure of die-upset nanocomposite magnets is identical with that of the traditional die-upset rare earth-rich magnets. The coercivity, remanence, and squareness degree of demagnetization curves are optimized. The observation for microstructures and the analysis of magnetic properties suggest that the grain boundary diffusion mainly occurs in the hot deformation process.

Tang, Xin; Chen, Renjie; Yin, Wenzong; Wang, Jinzhi; Tang, Xu; Lee, Don; Yan, Aru

2013-02-01

241

Die gegenwärtigen Schwerpunkte der Gesundheitserziehung  

Microsoft Academic Search

Zusammenfassung Auf Wunsch von Westdeutschen Institutionen öffentlicher Gesundheitspflege wurden die gesundheitlichen Verhältnisse im Kanton Zürich und die schweizerischen Bestrebungen zur Einführung der Gesundheitserziehung geschildert.

Hans Wespi

1962-01-01

242

Die Informationspflichten der Verbraucherrechterichtlinie.  

E-print Network

??Inhalt der vorliegenden Arbeit ist die umfassende Untersuchung der Informationspflichten der Verbraucherrechterichtlinie (Richtlinie 2011/83/EG), welche im November 2011 in Kraft trat und deren Bestimmungen grundsätzlich… (more)

Neuner, Sophie

2012-01-01

243

Should Canadian health promoters support a food stamp-style program to address food insecurity?  

PubMed

Food insecurity is an urgent public health problem in Canada, affecting 4 million Canadians in 2012, including 1.15 million children, and associated with significant health concerns. With little political will to address this significant policy issue, it has been suggested that perhaps it is time for Canada to try a food stamp-style program. Such a program could reduce rates of food insecurity and improve the nutritional health of low-income Canadians. In this article, we explore the history of the US food stamp program; the key impetus of which was to support farmers and agricultural interests, not to look after the needs of people living in poverty. Though the US program has moved away from its roots, its history has had a lasting legacy, cementing an understanding of the problem as one of lack of food, not lack of income. While the contemporary food stamp program, now called Supplemental Nutrition Assistance Program (SNAP), reduces rates of poverty and food insecurity, food insecurity rates in the USA are significantly higher than those in Canada, suggesting a food stamp-style program per se will not eliminate the problem of food insecurity. Moreover, a food stamp-style program is inherently paternalistic and would create harm by reducing the autonomy of participants and generating stigma, which in itself has adverse health effects. Consequently, it is ethically problematic for health promoters to advocate for such a program, even if it could improve diet quality. PMID:25256001

Power, Elaine M; Little, Margaret H; Collins, Patricia A

2015-03-01

244

Meisternovellen 1. DIE ROSE  

E-print Network

Emil Ertl Meisternovellen 1. DIE ROSE »Du solltest aber doch auch an die Luft gehn, Papa!« sagte«, obgleich er nicht ihr, sondern der Papa ihrer Kinder war; aber sie sah ja alles mit den Augen der Kinder Papiere, zu Quartblättern zugeschnit- ten. Gretlis, seines Lieblings, Geschäft war es, diese Vorräte #12

Prodinger, Helmut

245

Coin Die Experiment  

NSDL National Science Digital Library

This resource consists of a Java applet and expository text. The applet is a simulation of the experiment that consists of tossing a coin and then rolling either a red die or a green die, depending on the outcome of the coin toss. The probability of heads and the distributions of the two dice can be specified. The applet illustrates a two-stage experiment.

Siegrist, Kyle

246

1 The birth of the MIT Press The MIT Press  

E-print Network

1 The birth of the MIT Press The MIT Press celebrating 50 years #12;3 The birth of the MIT Press birth of the MIT Press #12;3the birth of the MIT Press Like its extraordinary home institution, the MIT with some memory intact at the time when the Institute gave birth to it. A look at correspondence

Polz, Martin

247

Thermal stresses in aluminium alloy die casting dies  

Microsoft Academic Search

The aim of this research is to analyze the influence of Aluminium Alloy die casting parameters, die material, and die geometry on in-service tool life. An innovative immersion testing apparatus is developed, at which Aluminium Alloy die casting is simulated. It enables controlled thermal fatigue cycling. Special specimens with different edge geometry and specimens with maraging steel welds deposited by

Damjan Klob?ar; Janez Tušek

2008-01-01

248

Polymer photovoltaic cells with a graded active region achieved using double stamp transfer printing  

NASA Astrophysics Data System (ADS)

We demonstrate that double stamp transfer printing of the poly(3-hexylthiophene) (P3HT):[6,6]-phenyl C61-butyric acid methyl ester (PCBM) active layer on MoO3 of an organic photovoltaic (OPV) cell enhances the charge collection efficiency at the anode and cathode contacts by creating a concentration gradient of the P3HT and PCBM across the bulk heterojunction active layer. This gradient increases the short circuit current and the power conversion efficiency of stamp-transferred P3HT:PCBM polymer OPVs by 23% compared with that of similarly structured spin-coated polymer OPVs due to the graded active layer composition, resulting in a power conversion efficiency of 3.7 ± 0.2% for an as-cast device. The stamp-transfer printing process provides a route to low cost fabrication of OPVs over large flexible substrate areas.

Joo Cho, Yong; Yeob Lee, Jun; Forrest, Stephen R.

2013-11-01

249

Numerical simulation of temperature field, microstructure evolution and mechanical properties of HSS during hot stamping  

SciTech Connect

The hot stamping of boron steels is widely used to produce ultra high strength automobile components without any spring back. The ultra high strength of final products is attributed to the fully martensitic microstructure that is obtained through the simultaneous forming and quenching of the hot blanks after austenization. In the present study, a mathematical model incorporating both heat transfer and the transformation of austenite is presented. A FORTRAN program based on finite element technique has been developed which permits the temperature distribution and microstructure evolution of high strength steel during hot stamping process. Two empirical diffusion-dependent transformation models under isothermal conditions were employed respectively, and the prediction capability on mechanical properties of the models were compared with the hot stamping experiment of an automobile B-pillar part.

Shi, Dongyong; Liu, Wenquan [Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116024, P.R. (China); Ying, Liang, E-mail: pinghu@dlut.edu.cn; Hu, Ping, E-mail: pinghu@dlut.edu.cn; Shen, Guozhe [Key Laboratory of Structural Analysis for Industrial Equipment, School of Automotive Engineering, Dalian University of Technology, Dalian, 116024, P.R. (China)

2013-12-16

250

Internet-Based Training to Improve Preschool Playground Safety: Evaluation of the Stamp-in-Safety Programme  

ERIC Educational Resources Information Center

Objective: Playground injuries result in over 200,000 US pediatric emergency department visits annually. One strategy to reduce injuries is improved adult supervision. The Stamp-in-Safety programme, which involves supervisors stamping rewards for children playing safely, has been demonstrated in preliminary classroom-based work to reduce child…

Schwebel, David C.; Pennefather, Jordan; Marquez, Brion; Marquez, Jessie

2015-01-01

251

Transfer printing of 3D hierarchical gold structures using a sequentially imprinted polymer stamp.  

PubMed

Complex three-dimensional (3D) hierarchical structures on polymeric materials are fabricated through a process referred to as sequential imprinting. In this work, the sequentially imprinted polystyrene film is used as a soft stamp to replicate hierarchical structures onto gold (Au) films, and the Au structures are then transferred to a substrate by transfer printing at an elevated temperature and pressure. Continuous and isolated 3D structures can be selectively fabricated with the assistance of thermo-mechanical deformation of the polymer stamp. Hierarchical Au structures are achieved without the need for a corresponding three-dimensionally patterned mold. PMID:21832645

Zhang, Fengxiang; Low, Hong Yee

2008-10-15

252

Transfer printing of 3D hierarchical gold structures using a sequentially imprinted polymer stamp  

NASA Astrophysics Data System (ADS)

Complex three-dimensional (3D) hierarchical structures on polymeric materials are fabricated through a process referred to as sequential imprinting. In this work, the sequentially imprinted polystyrene film is used as a soft stamp to replicate hierarchical structures onto gold (Au) films, and the Au structures are then transferred to a substrate by transfer printing at an elevated temperature and pressure. Continuous and isolated 3D structures can be selectively fabricated with the assistance of thermo-mechanical deformation of the polymer stamp. Hierarchical Au structures are achieved without the need for a corresponding three-dimensionally patterned mold.

Zhang, Fengxiang; Low, Hong Yee

2008-10-01

253

The restoration of obliterated stamped serial numbers by ultrasonically induced cavitation in water  

NASA Technical Reports Server (NTRS)

Seventeen out of 21 obliterated stamped serial numbers on test specimens of copper, brass, steel, and aluminum were successfully restored. Cavitation induced in water by a piezoelectric transducer was the mechanism used. Primarily, smeared metal was removed from the number grooves by the force of the cavitation, however, numbers were also restored at depths at or below the level of the stamped grooves. The feasibility of this technique as a low cost tool for crime laboratories has been clearly demonstrated. The technique is applicable to a variety of materials, and no previous surface or chemical treatments are necessary.

Young, S. G.

1973-01-01

254

SKANOORD-KAAP Een van die mees innoverende strukture wat tans vir die die MeerKAT-teleskoop gebou word, is die ondergrondse gebou vir die  

E-print Network

. Ondergrondse bouwerk vir MeerKAT Stuur gerus enige vrae of voorstelle vir "SKA Nuus vir die Noord-Kaap" aan. MeerKAT gaan regs van KAT-7 gebou word, terwyl die kern van die SKA-terrein links van die bestaande beskerming teen weerlig. MeerKAT skep werk en opleidings- geleenthede Dit is vir die SKA SA-Projek baie

Jarrett, Thomas H.

255

Fluorescent and photo-oxidizing TimeSTAMP tags track protein fates in light and electron microscopy  

PubMed Central

Protein synthesis is highly regulated throughout nervous system development, plasticity, and regeneration. However, tracking the distributions of specific new protein species has not been possible in living neurons or at the ultrastructural level. Previously we created TimeSTAMP epitope tags, drug-controlled tags for immunohistochemical detection of specific new proteins synthesized at defined times. Here we extend TimeSTAMP to label new protein copies by fluorescence or photo-oxidation. Live microscopy of a fluorescent TimeSTAMP tag reveals that copies of the synaptic protein PSD95 are synthesized in response to local activation of growth factor and neurotransmitter receptors, and preferentially localize to stimulated synapses in rat neurons. Electron microscopy of a photo-oxidizing TimeSTAMP tag reveals new PSD95 at developing dendritic structures of immature neurons and at synapses in differentiated neurons. These results demonstrate the versatility of the TimeSTAMP approach for visualizing newly synthesized proteins in neurons. PMID:23103964

Butko, Margaret T.; Yang, Jin; Geng, Yang; Kim, Hyung Joon; Jeon, Noo Li; Shu, Xiaokun; Mackey, Mason R.; Ellisman, Mark H.; Tsien, Roger Y.; Lin, Michael Z.

2012-01-01

256

Aluminium Pneumoconiosis I. In Vitro Comparison of Stamped Aluminium Powders Containing Different Lubricating Agents and a Granular Aluminium Powder  

PubMed Central

The discrepancy in previous reports of the action of aluminium on the lung may be explained by differences between stamped and granular aluminium powders. A stamped powder of the variety causing pulmonary fibrosis showed a brisk reaction with water, but a granular powder was unreactive. This difference is primarily due to the granular particles being covered by inert aluminium oxide, the formation of which is partially prevented in the stamping process by stearine and mineral oil. The reactivity of the flake-like stamped particles is also dependent on their large surface area per unit volume. The appearance of aluminium pneumoconiosis in Britain is explained by the introduction of mineral oil into the stamping industry for, in contrast to stearine, mineral oil permits the powder to react with water. The lung damage is believed to be caused by a soluble form of aluminium. PMID:14072616

Corrin, B.

1963-01-01

257

The direct economic effects of a policy to provide government subsidized price discounts for the purchase of fruit and vegetable by food stamp recipients.  

E-print Network

for the purchase of fruit and vegetable by food stamp recipients. by Karen M. Jetter Assistant Research Economist price discounts on fresh fruit and vegetable to food stamp recipients. The suggestion for a price discount on fruit and vegetable for food stamps recipients is contained in the 2004 Farm Bill, section 4116

California at Davis, University of

258

SKANOORD-KAAP Op die oomblik is die SKA-terrein in die Karoo  

E-print Network

KAT-antennas teen die einde van 2016 te oorhandig, sê MeerKAT se projekbestuurder,Willem Esterhuyse. "Die eerste antenna behoort teen Desember 2013 geïnstalleer te wees.Teen die einde van 2015 moet 32 antennas in plek wees, en al 64 teen die einde van 2016. Die MeerKAT-projekspan is gemotiveerd om 'n teleskoop te bou

Jarrett, Thomas H.

259

Hawaii Food Stamp Employment and Training/JOBS Conformance Demonstration: Impact Evaluation Final Report.  

ERIC Educational Resources Information Center

An evaluation was conducted of the Hawaii Food Stamp Employment and Training/Job Opportunities and Basic Skills Program Conformance Demonstration, known as PRIDE (Positive Response in Developing Employment). The impact analysis examined client participation patterns, services, and employment outcomes. A pre-post/demonstration-comparison site…

Schexnayder, Deanna T.; Olson, Jerome A.

260

Clinical experience of postage stamp autograft with porcine skin onlay dressing in extensive burns.  

PubMed

Fifteen patients with extensive burns (deep second-degree burn > 50%, or third-degree burn > 30% of total body surface area) were treated with postage stamp autograft and meshed porcine skin onlay dressing from 1992 to 1996. All patients received the procedure within 10 days of sustaining the burn, with an average of 6.3 days. The areas chosen for postage stamp autograft were the anterior chest, abdomen, back, buttocks and the proximal part of the extremities. The scalp was the donor site of choice when available. The harvested skin was cut into 0.5-1.0 cm postage-stamp-like squares and applied to the recipient sites separated by a distance of 0.5-2.0 cm. The expansion ratio was from 1:4 to 1:9. Meshed porcine skin was then used for onlay dressing. The average graft area was 26% of the total body surface area. The success rate of the skin grafts was nearly 100% in 14 patients. One patient had a 40% loss due to contamination from adjacent wounds. In conclusion, the postage stamp autograft with porcine skin overlay is an effective way to treat extensive burn wounds in the early stages. PMID:9677031

Chang, L Y; Yang, J Y

1998-05-01

261

Texas Food Stamp Employment and Training/JOBS Conformance Demonstration: Impact Evaluation Final Report.  

ERIC Educational Resources Information Center

An evaluation was conducted of the Texas Food Stamp Employment and Training (FSE&T)/Job Opportunities and Basic Skills (JOBS) Program Conformance Demonstration. The BOND (Better Opportunities for New Directions) demonstration program tested conformance compatibility between the FSE&T and JOBS programs. It enacted such policy changes as exemption…

Schexnayder, Deanna T.; Olson, Jerome A.

262

Falling through the Social Safety Net: Food Stamp Use and Nonuse among Older Impoverished Americans  

ERIC Educational Resources Information Center

Purpose: Older adults are less likely than any other age group to use the federal Food Stamp Program. The personal and social costs of elderly diet insufficiency include disease exacerbation, depression, and increased hospitalization. In order to improve targeting and outreach efforts, this study identifies the characteristics of eligible older…

Fuller-Thomson, Esme; Redmond, Melissa

2008-01-01

263

T & I--Graphics, Rubber Stamp. Kit No. 90. Instructor's Manual [and] Student Learning Activity Guide.  

ERIC Educational Resources Information Center

An instructor's manual and student activity guide on making a rubber stamp are provided in this set of prevocational education materials which focuses on the vocational area of trade and industry (graphics). (This set of materials is one of ninety-two prevocational education sets arranged around a cluster of seven vocational offerings:…

Lake, Robert J.

264

Online Time Stamped Text Indexing Amihood Amir y Gad M. Landau z Esko Ukkonen x  

E-print Network

Online Time Stamped Text Indexing #3; Amihood Amir y Gad M. Landau z Esko Ukkonen x Bar of domain properties with varying degrees of success. Recently, there have been attempts to solve a class time [10]. These methods are more general and not domain-speci#12;c. Johansen [10] used this idea

Amir, Amihood

265

Impacting Mediators of Change for Physical Activity among Elderly Food Stamp Recipients  

ERIC Educational Resources Information Center

A multidisciplinary team developed and pilot-tested a curriculum, delivered by trained lay educators, to increase self-efficacy for physical activity among elderly food stamp recipients. Curriculum development was guided by a comprehensive literature review. Process evaluation was used to revise the curriculum and to assess lay educator training…

Dye, Cheryl J.; Williams, Joel E.; Kemper, Karen A.; McGuire, Francis A.; Aybar-Damali, Begum

2012-01-01

266

Blank design and strain prediction of automobile stamping parts by an inverse finite element approach  

Microsoft Academic Search

A new finite element approach is introduced for direct prediction of blank shapes and strain distributions from desired final shapes in sheet metal forming. The approach deals with the geometric compatibility of finite elements, plastic deformation theory, minimization of plastic work with constraints, and a proper initial guess. The algorithm developed is applied to automobile stamping parts such as an

C. H. Lee; H. Huh

1997-01-01

267

MERCURY IN STAMP SAND DISCHARGES: IMPLICATIONS FOR LAKE SUPERIOR MERCURY CYCLING  

EPA Science Inventory

Approximately a half billion tons of waste rock from the extraction of native copper and silver ores was discharged into the Lake Superior basin. Stamping was the method of choice to recover these metals from the surrounding poor rock. This process created large amounts of extre...

268

Program Evaluation: Food Stamps and Commodity Distribution in Rural Areas of Central Pennsylvania.  

ERIC Educational Resources Information Center

Since one primary goal of the Commodity Distribution (CD) Program and the Food Stamp (FS) Program is to improve diets of low-income families, this 1969-70 study focused on whether the adequacy of a low-income family's dietary intake was improved by their participation in a food-assistance program. As stated, the adequacy of a family's dietary…

Madden J. Patrick; Yoder, Marion D.

269

FORMABILITY INVESTIGATIONS FOR THE HOT STAMPING PROCESS Y. Dahan 1&2,*  

E-print Network

, a numerical model of these hot stamping tests has been developed with finite element softwares (Forge2® , Forge3® and Abaqus). The numerical simulations confirm the location and the magnitude of the blank by the cold tools. The cooling rate of this process step allows obtaining the desired martensitic

Paris-Sud XI, Université de

270

Page 1 of 3 Adding a Punch or Reconciling Time for Time Stamp and Time Clock  

E-print Network

Page 1 of 3 Adding a Punch or Reconciling Time for Time Stamp and Time Clock Users A punch will punch in and out. 1) Click My QuickNavs Tab. Select Reconcile Time . 2) If an employee does not appear employees, or employees based on last names. #12;Page 2 of 3 3) To view or reconcile the employee's time

Hutcheon, James M.

271

PS-InSAR experiments for the analysis of urban ground deformation using StaMPS  

NASA Astrophysics Data System (ADS)

Many works and European projects have proven the ability of Permanent Scatterers Synthetic Aperture Radar Interferometry (PS-InSAR) to measure the slow deformation of the persistent ground objects with a millimetric precision measurement. Compared to the classical differential SAR Interferometry (DInSAR), PS-InSAR is an approach that estimates several contributions: atmospheric disturbances, orbital errors, deformation signal as well as topographical errors. In this paper, we propose to apply PS-InSAR for the analysis of the ground deformation phenomena in a urban context. For that purpose, the Stanford Method for Permanent Scatterers (StaMPS) is applied using an ERS data archive. StaMPS was developed in Stanford University by Andy Hooper. The advantages to use StaMPS were that it is free and many scripts are already available to process the dataset. In first steps of the processing, differential interferograms are produced using the Delft Object-oriented Radar Interferometric Software (DORIS), developed in Delft University of Technology . Doris is also a free tool. StaMPS method is briefly explained. A first experiment on the city of Paris, France, is presented, especially because PSINSAR and DInSAR results have already been published by several researchers. Therefore, the processing of Nantes (French city) is carried out. Some important results are shown.

Chendeb El Rai, Marwa; Simonetto, Elisabeth

2009-09-01

272

Stamp design effect on 100 nm feature size for 8 inch NanoImprint lithography  

NASA Astrophysics Data System (ADS)

Sub-100 nm resolution on a 200 mm silicon stamp has been hot embossed into commercial Sumitomo NEB 22 resist. A single pattern, exposed with electron beam lithography, has been considered to define the stamp and thus make it possible to point out the impact of stamp design on the printing. These results may be considered as a first attempt to define rules to solve the proximity printing effects (PPEs). Moreover, a large range of initial resist thickness, from 56 to 506 nm, has been spin coated to assess the effect of polymer flow properties for the stamp cavity filling and the printed defects. A detailed analysis of the printed resist in dense hole patterns showed that the application volume conservation is enough to calculate the residual layer thickness as the height of the printed resist feature. Good accordance has been obtained between the theoretical approach and experimental results. Moreover, the impact of the pattern symmetry breakdown on mould deformation is clearly shown in this paper in the printed areas as well as in the unprinted areas.

Landis, S.; Chaix, N.; Gourgon, C.; Perret, C.; Leveder, T.

2006-05-01

273

Failure Analysis of Warm Stamping of Magnesium Alloy Sheet Based on an Anisotropic Damage Model  

NASA Astrophysics Data System (ADS)

Based on the frame work of continuum damage mechanics, a research work of anisotropic damage evolution in warm stamping process of magnesium alloy sheets has been carried out by means of a combined experimental-numerical method. The aim was to predict formability of warm stamping of AZ31 Mg alloy sheets by taking the thermal and damage effects into account. In the presented work, a temperature-dependent anisotropic yield function suitable for cold rolling sheet metals together with an anisotropic damage model was implemented into the a VUMAT subroutine for ABAQUS/EXPLICIT. The evolution of internal damage in the form of void growth and coalescence in AZ31 Mg alloy sheet was observed by means of scanning electron microscopy (SEM). Moreover, a coupled thermo-mechanical simulation of the stamping process was performed using the implemented code at different temperatures. The parameters employed in the simulation were determined by the standard tensile tests and algebraic manipulation. The overall anisotropic damage process from crack initiation to final propagation in local area of blank was simulated. Numerical results show that the prediction of the site of crack initiation and the orientation of crack propagation are consistent with the data observed in warm stamping experiments.

Zhao, P. J.; Chen, Z. H.; Dong, C. F.

2014-08-01

274

1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE STAMP REQUIRED.  

E-print Network

NOTES 1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 2. ALL WELDS SHALL BE DYE PENETRANT INSPECTED. NO RADIOGRAPHY REQUIRED. 3. MATERIAL CERTIFICATIONS HOSE W/TUBING ENDS, 13.5 FACE-TO-FACE N/A 3 1 swagelok 1.0 pipe weld connector SS - 316L SWAGELOK PIPE

McDonald, Kirk

275

Polymeric Multilayers that contain Silver Nanoparticles can be Stamped onto Biological Tissues to Provide Antibacterial Activity  

PubMed Central

We report the design of polyelectrolyte multilayers (PEMs) that can be prefabricated on an elastomeric stamp and mechanically transferred onto biomedically-relevant soft materials, including medical-grade silicone elastomers (E?~450–1500 kPa; E?-elastic modulus) and the dermis of cadaver-skin (E?~200–600 kPa). Whereas initial attempts to stamp PEMs formed from poly(allylamine hydrochloride) and poly(acrylic acid) resulted in minimal transfer onto soft materials, we report that integration of micrometer-sized beads into the PEMs (thicknesses of 6–160 nm) led to their quantitative transfer within 30 seconds of contact at a pressure of ~196 kPa. To demonstrate the utility of this approach, PEMs were impregnated with a range of loadings of silver-nanoparticles and stamped onto the dermis of human cadaver-skin (a wound-simulant) that was subsequently incubated with bacterial cultures. Skin-dermis stamped with PEMs that released 0.25±0.01 ?g cm?2 of silver ions caused a 6 log10 reduction in colony forming units of Staphylococcus epidermidis and Pseudomonas aeruginosa within 12 h. Significantly, this level of silver release is below that which is cytotoxic to NIH 3T3 mouse fibroblast cells. Overall, this study describes a general and facile approach for the functionalization of biomaterial surfaces without subjecting them to potentially deleterious processing conditions.

Agarwal, Ankit; Guthrie, Kathleen M; Czuprynski, Charles J.; Schurr, Michael J.; McAnulty, Jonathan F.

2014-01-01

276

A Fully Automated and Robust Method to Incorporate Stamping Data in Crash, NVH and Durability Analysis  

Microsoft Academic Search

Crash, NVH (Noise, Vibration, Harshness), and durability analysis are commonly deployed in structural CAE analysis for mechanical design of components especially in the automotive industry. Components manufactured by stamping constitute a major portion of the automotive structure. In CAE analysis they are modeled at a nominal state with uniform thickness and no residual stresses and strains. However, in reality the

Hariharasudhan Palaniswamy; Narayan Kanthadai; Subir Roy; Erwan Beauchesne

2011-01-01

277

Food Stamp and School Lunch Programs Alleviate Food Insecurity in Rural America. Fact Sheet  

ERIC Educational Resources Information Center

The Food Stamp and the National School Lunch Programs play a vital role in helping poor, rural Americans obtain a more nutritious diet and alleviate food insecurity and hunger. This fact sheet looks at the extent to which rural America depends on these programs and describes characteristics of beneficiaries of these federal nutrition assistance…

Smith, Kristin; Savage, Sarah

2007-01-01

278

Poetry and the Dying.  

ERIC Educational Resources Information Center

Demonstrates roles poetry can play as people confront the death of loved ones and their own dying. Gives examples of Heinrich Heine transforming his agony into art and, from the poetry of two college students, both in advanced stages of neurological disease, which was read aloud in class, teaching all present something about how to approach their…

Kramer, Aaron

1992-01-01

279

"Einfhrung in die Bioinformatik"  

E-print Network

the session · Jonas Neuner will be the first moderator. Moderator 5Proseminar "Einführung in die Bioinformatik-seq Philipp Weber 29.01.2013 Wie sehen Proteine aus: Vorhersage der Sekundärstruktur Jonas Neuner 05

Nieselt, Kay

280

Dying to Play.  

ERIC Educational Resources Information Center

In August 1995, a young football player died as a result of heat exhaustion suffered on the first day of football practice in Arkansas. Spurred by this tragedy, the district made some changes that every school district with an athletic program should consider. These include using a heat-stress monitor; abandoning the practice of group physical…

Miller, John K.

1998-01-01

281

Dying Piñon Pine  

USGS Multimedia Gallery

A massive forest die-off is projected to occur more frequently in the Southwest. Piñon pines, normally evergreen, have reddish-brown foliage in October 2002 (left). By May 2004 (right), the dead piñon pines have lost all their needles, exposing gray trunks and branches. The photos were...

282

Archimedes, und die gestorten  

E-print Network

Archimedes, und die gest¨orten Kreise Vortrag im Naturhistorischen Museum Mainz Prof. Dr. Duco van;Archimedes Gem¨alde von Jusepe de Ribera (1630) (Madrid) #12;Archimedes Gem¨alde von Domenico Fetti (1620-241 #12;· 263: Friedensvertrag mit Rom · Fast f¨unfzig Jahre Frie- den! · Archimedes wird Berater am Hof

van Straten, Duco

283

Press Release Corporate Communications  

E-print Network

reducing drug dosages in the future. Drugs do not exhibit their effects until they have been taken up lags until drugs begin to exhibit their effects might be drastically reduced. For example, the tiny.ch@pvw.tu-darmstadt.de www.tu-darmstadt.de/presse presse@tu-darmstadt.de New Substances Accelerate Drug Transport Into Cells

Reggelin, Michael

284

Modeling the Mechanical Performance of Die Casting Dies  

SciTech Connect

The following report covers work performed at Ohio State on modeling the mechanical performance of dies. The focus of the project was development and particularly verification of finite element techniques used to model and predict displacements and stresses in die casting dies. The work entails a major case study performed with and industrial partner on a production die and laboratory experiments performed at Ohio State.

R. Allen Miller

2004-02-27

285

Lentivirus-mediated RNA interference of DC-STAMP expression inhibits the fusion and resorptive activity of human osteoclasts.  

PubMed

Cell-cell fusion is a critical step in osteoclast development, because only after osteoclasts become multinucleated can they efficiently resorb bone. Although recent studies suggest that dendritic cell-specific transmembrane protein (DC-STAMP) may play a key role in the process of fusion of mouse osteoclasts, little information has been available on the role of DC-STAMP in human osteoclasts. In this study, we screened and identified an in vitro-transcribed short-hairpin RNA targeting human DC-STAMP from four candidates and generated a lentivirus vector. Subsequent experiments indicated that this lentiviral transgenic system could effectively transfer into target human osteoclasts, at more than 80 % gene transfer efficiency at multiplicity of infection of 15, and significantly and specifically inhibited DC-STAMP expression at both mRNA and protein levels. We also found that DC-STAMP inhibition by RNAi consequently suppressed fusion and bone resorption of human osteoclasts. In conclusion, these data indicated the lentivirus-mediated RNAi was capable of efficiently suppressing DC-STAMP expression in primary human osteoclasts and inhibiting osteoclastogenesis, demonstrating an essential role of DC-STAMP in the differentiation of human osteoclasts. PMID:23525827

Zeng, Zhiyong; Zhang, Chenqing; Chen, Junmin

2013-07-01

286

Über die Umwandlungsreihen des Urans, die durch Neutronenbestrahlung erzeugt werden  

Microsoft Academic Search

Zusammenfassung In einer Reihe vorangehender Arbeiten ist gezeigt worden, daß die Bestrahlung von Uran mit Neutronen zu drei neuen Umwandlungsreihen führt, deren einzelne Glieder zum größten Teile Elemente jenseits Uran sind. Wir haben im Laufe der weiteren Untersuchung neue Ergebnisse erhalten, über die hier berichtet werden soll, so weit sie mehr physikalische Fragen berühren. Die Darstellung der chemischen Eigenschaften der

L. Meitner; O. Hahn; F. Strassmann

1937-01-01

287

Hauptseminar Die Einfhrung in die Java Card Technologie  

E-print Network

Hauptseminar Die Einführung in die Java Card Technologie Nachweis von Sicherheitseigenschaften für Java Card durch Approximative Programmauswertung Veranstalter Pr. T. Nipkow Dr. M. Strecker Autor Tao Zhuang 07,01,2002 #12;�berblick ·Einleitung ·Smart Card Basis ·�berblick der Java Card Technologie ·Die

Cengarle, María Victoria

288

Method of extruding and packaging a thin sample of reactive material including forming the extrusion die  

DOEpatents

This invention teaches a method of cutting a narrow slot in an extrusion die with an electrical discharge machine by first drilling spaced holes at the ends of where the slot will be, whereby the oil can flow through the holes and slot to flush the material eroded away as the slot is being cut. The invention further teaches a method of extruding a very thin ribbon of solid highly reactive material such as lithium or sodium through the die in an inert atmosphere of nitrogen, argon or the like as in a glovebox. The invention further teaches a method of stamping out sample discs from the ribbon and of packaging each disc by sandwiching it between two aluminum sheets and cold welding the sheets together along an annular seam beyond the outer periphery of the disc. This provides a sample of high purity reactive material that can have a long shelf life.

Lewandowski, Edward F. (Westmont, IL); Peterson, Leroy L. (Joliet, IL)

1985-01-01

289

Method of extruding and packaging a thin sample of reactive material, including forming the extrusion die  

DOEpatents

This invention teaches a method of cutting a narrow slot in an extrusion die with an electrical discharge machine by first drilling spaced holes at the ends of where the slot will be, whereby the oil can flow through the holes and slot to flush the material eroded away as the slot is being cut. The invention further teaches a method of extruding a very thin ribbon of solid highly reactive material such as lithium or sodium through the die in an inert atmosphere of nitrogen, argon, or the like as in a glovebox. The invention further teaches a method of stamping out sample discs from the ribbon and of packaging each disc by sandwiching it between two aluminum sheets and cold welding the sheets together along an annular seam beyond the outer periphery of the disc. This provides a sample of high purity reactive material that can have a long shelf life.

Lewandowski, E.F.; Peterson, L.L.

1981-11-30

290

Four Theories of the Press.  

ERIC Educational Resources Information Center

A systematic understanding of the press requires an understanding of the social and political structures within which the press operates. This book discusses four theories that have determined the kind of press the Western world has had: authoritarian, libertarian, socially responsible, and Soviet communist. Each chapter discusses press

Siebert, Fred S.; And Others

291

Press laws in North Korea  

Microsoft Academic Search

The press in the Democratic People's Republic of Korea (North Korea) is closely tied to its communist sociopolitical structures. The North Korean press finds its modus operandi in the ‘Soviet Communist’ theory for its relationship with its government. This study examines the press laws and regulations in North Korea, pursuing three questions: (1) What is the status of the press

Kyu Ho Youm

1991-01-01

292

Die Chemische Bindung  

Microsoft Academic Search

\\u000a In der Regel findet man in der Natur keine einzelnen Atome, sondem Atomgruppierungen, d.h. miteinander verbundene Atome. Aus\\u000a energetischen Gründen ist es nämlich günstiger, wenn sich die Atome Bindungspartner suchen und mit diesen zu größeren Gebilden\\u000a zusammentreten. Aufwelche Weise dieses Zusammengehen erfolgt, hängt von der Elektronenkonfiguration der Atome abo Daher unterscheidet\\u000a man verschiedene Bindungsarten.

Dirk Flottmann; Detlev Forst; Helmut Roßwag

293

Die pharmakologische Wirkung des Ephedrins  

Microsoft Academic Search

Zusammenfassung 1.Die pharmakologische Wirkung des Ephedrins wurde zu analysieren versucht durch Studium der Beeinflussung des Blutdrucks, der Herzaktion und der Gefäße, des Effekts am Atemzentrum und an den Bronchien, der Wirkung auf die Pupillenweite, auf den Darm und den Uterus, auf die Sekretion verschiedener Drüsen und den Blutzuckerspiegel.2.Es wurden folgende Wirkungen gefunden: Der Blutdruck wird erhöht durch kleine Dosen, erniedrigt

H. Kreitmair

1927-01-01

294

Manufacturing of Dies and Molds  

Microsoft Academic Search

The design and manufacturing of dies and molds represent a significant link in the entire production chain because nearly all mass produced discrete parts are formed using production processes that employ dies and molds. Thus, the quality, cost and lead times of dies and molds affect the economics of producing a very large number of components, subassemblies and assemblies, especially

Taylan Altan; Blaine Lilly; Y. C. Yen

2001-01-01

295

Die Systemarchitektur von Windows 7  

Microsoft Academic Search

\\u000a Windows 7 ist die siebte und damit gegenwärtig neueste Version der Windows- Betriebssystem-Familie. Über die „7” im Namen\\u000a gab es viele Spekulationen: Ist die „7” eine Anlehnung an den Nachnamen von Bill Gates als einem der drei Microsoft-Gründern?\\u000a Schließlich ist das „G” der siebte Buchstabe im Alphabet.

Martin Grotegut

296

The Press Freedom Database  

NSDL National Science Digital Library

Developed by the Committee to Protect Journalists (CPJ), The Press Freedom Database contains case histories of documented press freedom violations against journalists and media organizations worldwide as well as annual CPJ reports on the violations in specific countries and regions. The case histories document the circumstances in which journalists have been attacked, killed, expelled, censored, harassed, threatened, and/or imprisoned. The database is searchable by journalist name, news organization, type of organization, date, country, or region. Currently, the database, which is updated weekly, contains over 2,000 reports of press freedom violations, spanning from 1993 to the present.

297

Michigan State University Press  

E-print Network

Michigan State University Press FALL/ WINTER 2013 #12;MICHIGANSTATEUNIVERSITYPRESS This symbol:PALEOLITHICANIMALART.CAVELIONSATGROTTECHAUVET.PHOTO:DONHITCHCOCKFROMANIMALSASNEIGHBORS. INSIDECOVERIMAGE:STENAANECHRISTINE.BORNINDENMARKOCTOBER26,1864.SHEWASARESIDENTOFDIXON,AKENTCOUNTY,MICHIGAN,COMMUNITYCLOSETOTHEDANISHSETTLEMENTOF TRUFANTINMONTCALMCOUNTY.COURTESYOFTHEFLATRIVERHISTORICALSOCIETY,GREENVILLE,MICHIGAN,FROMDANESANDICELANDERSINMICHIGAN. NEW

Liu, Taosheng

298

Die Logik der Grenzerhaltung und die Logik der Grenzüberschreitungen: Niklas Luhmann und die Kulturtheorien  

Microsoft Academic Search

Die intellektuelle Entwicklung der westlichen Sozial-, Kultur- und Gesellschaftstheorien befindet sich gegenwärtig auf einem Zwischenplateau: Eine Phase der Theorieentwicklung, die in den 1960er Jahren begann, kommt seit den 1990er Jahren allmählich an ihr Ende. Anfangs umstrittene Theoretiker sind mittlerweile klassisch geworden und zum Gegenstand umfänglicher Interpretationsaktivitäten avanciert; eine ganze Generation von Sozial- und Gesellschaftstheoretikern verläßt derweil die Bühne, was im

Andreas Reckwitz

299

75 FR 11913 - Chrysler, LLC, Sterling Stamping Plant, Including On-Site Leased Workers from Caravan Knight...  

Federal Register 2010, 2011, 2012, 2013

...Knight Facilities Management LLC, Sterling Heights, MI; Amended Certification Regarding...LLC, Sterling Stamping Plant, Sterling Heights, Michigan. The notice was published...were employed on-site at the Sterling Heights, Michigan location of Chrysler,...

2010-03-12

300

Time Stamp Attack on Wide Area Monitoring System in Smart Grid  

E-print Network

Security becomes an extremely important issue in smart grid. To maintain the steady operation for smart power grid, massive measurement devices must be allocated widely among the power grid. Previous studies are focused on false data injection attack to the smart grid system. In practice, false data injection attack is not easy to implement, since it is not easy to hack the power grid data communication system. In this paper, we demonstrate that a novel time stamp attack is a practical and dangerous attack scheme for smart grid. Since most of measurement devices are equipped with global positioning system (GPS) to provide the time information of measurements, it is highly probable to attack the measurement system by spoofing the GPS. By employing the real measurement data in North American Power Grid, simulation results demonstrate the effectiveness of the time stamp attack on smart grid.

Zhang, Zhenghao; Li, Husheng; Pei, Changxing

2011-01-01

301

Tool and Die Apprenticeship  

NSDL National Science Digital Library

The Manufacturing & Technology Center at Jefferson State Community College is constantly at work with local industry and students. An example of one local industry's Department of Labor approved apprenticeship program is the Tool and Die option with Ogihara America Corp. This type of program is a win/win situation with the student and the sponsor company. After completing specified classes at Jefferson State Community College, the student may continue on to an Associates of Applied Science in a manufacturing program or continue working in the sponsor industry.

Hatley, Andy

302

Welfare Reform: Few States Are Likely to Use the Simplified Food Stamp Program  

NSDL National Science Digital Library

This report, released by the US General Accounting Office (GAO), examines some of the consequences of the federal Welfare Reform Act of 1996. The report studies the Simplified Food Stamp Program provision of the Welfare Reform Act to identify the seven states that have adopted the program, describe the concerns of the non-participant states regarding increased casework and restricted options, and examines the program's limited effects on households's eligibility and benefits.

1999-01-01

303

Fabrication of a silicon oxide stamp by edge lithography reinforced with silicon nitride for nanoimprint lithography  

Microsoft Academic Search

The fabrication of a stamp reinforced with silicon nitride is presented for its use in nanoimprint lithography. The fabrication process is based on edge lithography using conventional optical lithography and wet anisotropic etching of lang1 1 0rang silicon wafers. SiO2 nano-ridges of 20 nm in width were fabricated. A silicon rich nitride layer is deposited over the original SiO2 nano-ridges

Yiping Zhao; Erwin Berenschot; Meint de Boer; Henri Jansen; Niels Tas; Jurriaan Huskens; Miko Elwenspoek

2008-01-01

304

Evaluation of coefficients of friction in hot stamping by hot flat drawing test  

Microsoft Academic Search

The coefficient of friction in hot stamping was measured using a tribosimulator. Simulative experiments were carried out using SPHC steel and 22MnB5 steel under dry conditions. The coefficient of friction of 22MnB5 steel was higher than that of SPHC steel. The obtained coefficients of friction were effective for use in numerical simulations by finite element analysis. The obtained coefficients of

A. Yanagida; A. Azushima

2009-01-01

305

Service-Learning with a Food Stamp Enrollment Campaign: Community and Student Benefits  

Microsoft Academic Search

We analyze a multi-campus collaboration in a Food Stamp Enrollment Campaign to demonstrate that a well-managed public benefits campaign, associated with broader advocacy-based community partner- ships, can result in positive outcomes for the community that include measurable benefits for clients, data needed to make policy and administrative changes, and new institutional relationships that enhance existing capacities. Public benefits campaigns also

Judith R. Porter; Mary Summers; Suzanne Toton; Hillary Aisenstein

306

Evaluation of resistless Ga? beam lithography for UV NIL stamp fabrication.  

PubMed

This paper presents an alternative rapid prototyping approach for the fabrication of stamps for UV nanoimprint lithography. In this process, areas implanted with gallium serve as an etch mask for the dry etching of quartz. The implantation is performed using a focused ion beam system. To avoid charging of the quartz substrate the use of thin layers of chromium or carbon on the quartz substrate has been evaluated. The resulting quartz structures exhibit very smooth surfaces after dry etching, if the implantation dose is high enough to form a stable etch mask. Furthermore, anisotropic etching could be realized by optimization of a quartz etching process involving C?F? and O? after the use of resistless Ga(+) beam lithography. Finally, imprints into a UV curing resist are performed successfully with the manufactured stamps, proving that the presence of Ga rich areas on the stamp is not detrimental to the curing of the resist or the functionality of the anti-sticking layer. PMID:23942207

Rumler, M; Fader, R; Haas, A; Rommel, M; Bauer, A J; Frey, L

2013-09-13

307

Evaluation of resistless Ga+ beam lithography for UV NIL stamp fabrication  

NASA Astrophysics Data System (ADS)

This paper presents an alternative rapid prototyping approach for the fabrication of stamps for UV nanoimprint lithography. In this process, areas implanted with gallium serve as an etch mask for the dry etching of quartz. The implantation is performed using a focused ion beam system. To avoid charging of the quartz substrate the use of thin layers of chromium or carbon on the quartz substrate has been evaluated. The resulting quartz structures exhibit very smooth surfaces after dry etching, if the implantation dose is high enough to form a stable etch mask. Furthermore, anisotropic etching could be realized by optimization of a quartz etching process involving C4F8 and O2 after the use of resistless Ga+ beam lithography. Finally, imprints into a UV curing resist are performed successfully with the manufactured stamps, proving that the presence of Ga rich areas on the stamp is not detrimental to the curing of the resist or the functionality of the anti-sticking layer.

Rumler, M.; Fader, R.; Haas, A.; Rommel, M.; Bauer, A. J.; Frey, L.

2013-09-01

308

Anti-adhesion treatment for nanoimprint stamps using atmospheric pressure plasma CVD (APPCVD)  

NASA Astrophysics Data System (ADS)

Nanoimprint lithography (NIL) provides a practical method for producing high-precision nanostructures efficiently and at low cost. Interfacial interactions between the imprint stamp and the forming material are crucial for high-quality pattern transfer, with critical dimensions and large aspect ratios. This study conducted an in-depth investigation into anti-adhesion treatments for imprint stamps using atmospheric pressure plasma chemical vapor deposition (APPCVD). Quantitative analyses of adhesion force, surface roughness and contact angle were applied to verify the enhanced imprint capability and release performance of the stamps. Experimental results confirmed that APPCVD-prepared anti-adhesion coatings provided improvements in quality and produced few defects in imprinted replicas. The proposed technique can simultaneously provide surface modification and thin-film deposition, depending on the precursors used. Additionally, the use of oxygen-containing plasma resulted in greater durability of the anti-adhesion coatings. The major advantages of the technique include low-temperature treatments, large-format scalability with good uniformity, short process times, and a non-vacuum process environment.

Wu, Chien-Li; Yang, Cho-Yun; An, Tai-Pang; Lin, Je-Wei; Sung, Cheng-Kuo

2012-11-01

309

Predictions of the Mechanical Properties and Microstructure Evolution of High Strength Steel in Hot Stamping  

NASA Astrophysics Data System (ADS)

Hot stamping is an innovative operation in metal-forming processes which virtually avoids the cracking and wrinkling of high strength steel (HSS) sheets. Examining the phase transformation and mechanical properties of HSS by means of experiments is challenging. In this article, a numerical model of the hot stamping process including forming, quenching, and air cooling was developed to reveal the microstructure evolution and to predict the final mechanical properties of hot-stamped components after multi-process cycles. The effects of the number of process cycles and the holding times on the temperature of HSS were examined using the model. The microstructure evolution of HSS under variable holding times is illustrated. The mechanical properties, particularly hardness and tensile strength, were predicted. It was found that the martensitic content increased with increasing holding time, and the martensitic content of the formed component at the flange and end was higher than for the sidewall, and lowest for the bottom. The hardness trend was consistent with the martensitic content. After six process cycles, the predictive errors of the model for hardness and tensile strength were acceptable for practical applications in engineering. Comparison between the predicted results and the experiment results showed that the developed model was reliable.

Cui, Junjia; Lei, Chengxi; Xing, Zhongwen; Li, Chunfeng; Ma, Shumei

2012-11-01

310

Prediction of Proper Temperatures for the Hot Stamping Process Based on the Kinetics Models  

NASA Astrophysics Data System (ADS)

Nowadays, the application of kinetics models for predicting microstructures of steels subjected to thermo-mechanical treatments has increased to minimize direct experimentation, which is costly and time consuming. In the current work, the final microstructures of AISI 4140 steel sheets after the hot stamping process were predicted using the Kirkaldy and Li kinetics models combined with new thermodynamically based models in order for the determination of the appropriate process temperatures. In this way, the effect of deformation during hot stamping on the Ae3, Acm, and Ae1 temperatures was considered, and then the equilibrium volume fractions of phases at different temperatures were calculated. Moreover, the ferrite transformation rate equations of the Kirkaldy and Li models were modified by a term proposed by Åkerström to consider the influence of plastic deformation. Results showed that the modified Kirkaldy model is satisfactory for the determination of appropriate austenitization temperatures for the hot stamping process of AISI 4140 steel sheets because of agreeable microstructure predictions in comparison with the experimental observations.

Samadian, P.; Parsa, M. H.; Mirzadeh, H.

2014-12-01

311

The stiffness and buckling behavior of panels with stamping-induced imperfections  

NASA Astrophysics Data System (ADS)

With the decrease of sheet thickness, the stiffness and buckling behavior of automobile body panel are more and more concerned. In this paper, the stiffness and buckling behavior of panels with stamping-induced imperfection is studied. Imperfections caused in drawing and springback are obtained by finite element analysis and introduced to define the initial state of the panel before indenting. The indenting procedure is simulated in ABAQUS Standard. In order to solve the buckling problem, a viscous pressure that is proportional to the relative velocity between surfaces is added artificially. For comparison, a simplified model in which imperfections are not considered is also established. Comparing the simulation results with the reference experiment, we find that the stamping-induced imperfections lead to a more severe oil canning phenomena under a buckling load, although they increase panel's initial stiffness a bit. Moreover, among all stamping-induced imperfections, the geometrical imperfection (surface deflection) is beneficial to increase panel's buckling load, and the material imperfections (residual stress and uneven thickness) help to decrease panel's buckling load and can make oil canning more severe during post-buckling. Influences of blank holder force, sheet thickness and material property on panel stiffness and buckling behavior are also studied. The work of this paper is beneficial to processing optimization, material selection, and reinforcement design for automotive exterior panels.

Shen, Hongqing; Li, Shuhui; Chen, Guanlong

2011-08-01

312

STAMP: A New Data Acquisition System For ESA's Large Space Simulator  

NASA Astrophysics Data System (ADS)

STAMP is an advanced data acquisition, analysis and presentation system for thermal testing. To meet the increasingly complex requirements for modern spacecraft testing, STAMP was designed to be a flexible system that supports thousands of sensors and hundreds of power supplies. A high-performance, feature-rich presentation system is used to manipulate and present the acquired data in real time. The system runs on cheap computer hardware and supports multiple users. STAMP is currently used with the Large Space Simulator at ESTEC (see Fig. 1) and several other test facilities. Key features are: powerful data presentation capabilities, including various table formats and graphs, alarm generation, equilibrium detection, and output to Excel; extensive formula system to manipulate acquired data; able to acquire data from many thousands of sensors of virtually any type, including thermocouples, thermistors, and digital lines; able to control hundreds of power supplies; able to interface with customer EGSE and spacecraft hardware; high degree of flexibility with respect to thermal test configuration.

Guijt, H.; Popovitch, A.

2004-08-01

313

Hume's System: An Examination of the First Book of His Treatise, by David Pears. New York: Oxford University Press, 1990. Reviewed by David A. Reidy, Jr., University of Kansas  

E-print Network

CRITICAL NOTICE Hume's System: An Examination of the First Book of His Treatise, by David Pears. New York: Oxford University Press, 1990. Reviewed by David A. Reidy, Jr., University of Kansas. In his recent book, Hume's System: An Examination... of the First Book of his Treatise, David Pears presents David Hume not as the radical skeptic many have thought him to be, but rather as a "cautious naturalist" and a "sophisticated empiricist," a philosopher willing to give his epistemological stamp...

Reidy, David A. Jr.

314

Über die ?-Strahlung des Protactiniums  

Microsoft Academic Search

Zusammenfassung 1. Das a-strahlende Element Protactinium emittiert, ähnlich wie Radium, Radioactinium, Actinium X, auch sekundäre ß-Strahlen. 2. Es werden Absorptionskurven dieser ß-Strahlen aufgenommen und mit analogen Absorptionskurven der ß-Strahlen des Radioaetiniums verglichen. Die zeitlichen Änderungen der Kurven geben einen weiteren Beweis dafür, daß die ß-Strahlung beim Protactinium nicht etwa von irgendwelchen Verunreinigungen herrührt. 3. Es wird die Intensität der ß-Strahlen

Otto Hahn; Aristid v. Grosse

1928-01-01

315

Graphite/Thermoplastic-Pultrusion Die  

NASA Technical Reports Server (NTRS)

Attachment to extruder produces thermoplastic-impregnated graphite tape. Consists of profile die, fiber/resin collimator, and crosshead die body. Die designed to be attached to commercially available extrusion machine capable of extruding high-performance thermoplastics. Simple attachment to commercial extruder enables developers of composites to begin experimenting with large numbers of proprietary resins, fibers, and hybrid composite structures. With device, almost any possible fiber/resin combination fabricated.

Wilson, Maywood L.; Frye, Mark W.; Johnson, Gary S.; Stanfield, Clarence E.

1990-01-01

316

Cyberbullying: die Perspektive der Eltern.  

E-print Network

??Nach eingehendem Studium der Literaturbefunde wurde ersichtlich, dass das Thema Cyberbullying in Österreich noch wenig erforscht ist. Ziel dieser explorativen Studie ist die Einschätzung des… (more)

Schopper, Nathalie

2010-01-01

317

Die Ibaditen und der Oman.  

E-print Network

??Die Ibadiya als islamische Denkrichtung ist eine der ältesten innerhalb der islamischen Kulturgeschichte; neben der jahrhunderte alten Geschichte - welche in der vorliegenden Arbeit vorgestellt… (more)

Sarmini, Jasmin

2008-01-01

318

Public Support for the Press.  

ERIC Educational Resources Information Center

Reports findings of surveys of people's evaluations of press behavior during the Watergate period; concludes that the most important determinants of press criticism were in support of Nixon, party affiliation, and ideology. (GW)

Becker, Lee B.; And Others

1978-01-01

319

Press Relations of Terrorist Organizations.  

ERIC Educational Resources Information Center

Explores and illustrates the different types of press relations commonly undertaken by terrorist organizations. Argues that large and small groups both engage in publicity efforts, but employ different patterns of press relations activities. (SR)

Picard, Robert G.

1989-01-01

320

Alternative Press Center  

NSDL National Science Digital Library

The Alternative Press Center (APC), a non-profit collective, is devoted to "providing access to and increasing public awareness of the alternative press." The APC publishes the Alternative Press Index (API), a comprehensive quarterly subject index to more than 260 alternative periodicals in the social sciences and the humanities. The APC Website provides organizational information as well as information about the content and function of the API. The site also includes an online directory of periodicals in the API, listing subscription information, email addresses, and URLs. In addition, the APC compiles annotated links in a section entitled Alternative Viewpoints on the Internet. The compilation, comprised of over 330 sites, may be browsed by name or subject.

321

Die letzte heie Revolution und die erste coole Revolte  

E-print Network

Akteure des Spektakels mit böser Genauigkeit »Die Kinder von Karl Marx und Coca-Cola«. Der damals schon etwas ältere Karl Markus Michel, der bei Suhrkamp die erste legendäre, von Jürgen Habermas, Dieter

322

Untersuchungen über die periumbilikale Demarkationsentzündung im Hinblick auf die Lebendgeburt  

Microsoft Academic Search

Im Interesse der Klarstellung der widersprechenden Angaben in der Literatur betreffs der periumbilikalen Demarkationsentzündung haben die Verfasser 115 Nabelschnurreste histologisch untersucht` 83 der Feten waren lebend geboren und hatten 1 min bis 10 Tage nach der Geburt gelebt, die übrigen 32 waren Totgeburten. Bei der Bewertung der Demarkationsentzündung fand der Entwicklungsgrad der Feten Berücksichtigung. Das Untersuchungsmaterial wurde in drei Gruppen

I. Gy. Fazekas; F. Kósa; E. Fábrik

1969-01-01

323

Fabrication of a GHz band surface acoustic wave filter by UV-nanoimprint with an HSQ stamp  

NASA Astrophysics Data System (ADS)

A GHz band surface acoustic wave (SAW) filter was fabricated by UV-nanoimprint lithography (UV-NIL). The key techniques to produce a SAW filter include stamp and interdigital transducer (IDT) fabrication. For the stamp, high-aspect-ratio (AR) hydrogen silsesquioxane (HSQ)/ITO/glass stamps were first exposed by low e-beam dose. Adequate post-exposure bake, tetramethylammoniumhydroxide concentration, and etch time were utilized to pattern the HSQ stamps with a perfect vertical sidewall. HSQ/ITO/glass IDT stamps with widths in the range 46-168 nm were fabricated. The stamps were then cured with a novel step-like heating cycle as hard-bake. The modified HSQ stamps have a high hardness of 19 GPa. The HSQ/ITO/glass layered structure shows 80% transmittance at 365 nm UV light. Afterward, the IDT patterns were transferred on UV-curable resist/lithium niobate (LiNbO3) by UV-NIL at room temperature and low pressure. After removing the residual layer, Al/Ti films were deposited on UV-curable resist/LiNbO3. IDTs with widths in the range 62-219 nm and thickness of 20 nm could be obtained by following a lift-off process. The center frequency of 4.3-8.6 GHz and insertion loss of -14.1 to -61.7 dB of the SAW filters were measured by a network analyzer HP 8510C. The reactive ion etching step for residual layer elimination has significant implication for the electrical characterization of a SAW filter. The thorough removal of the residual layer not only ensures a clean interface between IDTs and LiNbO3 for SAW filters with minimum insertion loss, but also keeps intact IDT patterns for small center frequency shift.

Chen, Nian-Huei; Huang, Ju-Chun; Wang, Chiu-Yen; Huang, Fon-Shan

2011-04-01

324

Die Funkenspannung der elektrolytischen Ventilwirkung  

Microsoft Academic Search

Zusammenfassung Als Elektrolyte dienten Schwefelsäure, reine bei 0° C gesättigte Boraxlösung und eine bei Zimmertemperatur gesättigte Boraxlösung mit etwas Zusatz von Borsäure. -Von der Stromdichte ist die Funkenspannung völlig unabhängig. Mit der Temperatur des Elektrolyten steigt sie ein wenig an. -Wird vor den Versuchen das Al längere Zeit bei geringer Spannung vorformiert, so liegt die Funkenspannung etwas höher als ohne

Werner Bär

1935-01-01

325

Two Piece Compaction Die Design  

SciTech Connect

Compaction dies used to create europium oxide and tantalum control plates were modeled using ANSYS 11.0. Two-piece designs were considered in order to make the dies easier to assemble than the five-piece dies that were previously used. The two areas of concern were the stresses at the interior corner of the die cavity and the distortion of the cavity wall due to the interference fit between the two pieces and the pressure exerted on the die during the compaction process. A successful die design would have stresses less than the yield stress of the material and a maximum wall distortion on the order of 0.0001 in. Design factors that were investigated include the inner corner radius, the value of the interference fit, the compaction force, the size of the cavity, and the outer radius and geometry of the outer ring. The results show that for the europium oxide die, a 0.01 in. diameter wire can be used to create the cavity, leading to a 0.0055 in. radius corner, if the radial interference fit is 0.003 in. For the tantalum die, the same wire can be used with a radial interference fit of 0.001 in. Also, for the europium oxide die with a 0.003 in. interference fit, it is possible to use a wire with a diameter of 0.006 in. for the wire burning process. Adding a 10% safety factor to the compaction force tends to lead to conservative estimates of the stresses but not for the wall distortion. However, when the 10% safety factor is removed, the wall distortion is not affected enough to discard the design. Finally, regarding the europium oxide die, when the cavity walls are increased by 0.002 in. per side or the outer ring is made to the same geometry as the tantalum die, all the stresses and wall distortions are within the desired range. Thus, the recommendation is to use a 0.006 in. diameter wire and a 0.003 in. interference fit for the europium oxide die and a 0.01 in. diameter wire and a 0.001 in. interference fit for the tantalum die. The dies can also be made to have the same outer geometry if desired.

Coffey, Ethan N [ORNL

2010-03-01

326

Stress and strain histories in equal channel angular extrusion\\/pressing  

Microsoft Academic Search

Severe plastic strains induced in the material via multiple equal channel angular extrusions (ECAEs)\\/pressings can produce bulk ultrafine grains suitable for structural applications. These severe strains were induced so far with a range of channel angles from 60° to 160°. However, to produce sound ultrafine grain billets and to design an optimized ECAE die, the knowledge of stress–strain histories, and

A. V. Nagasekhar; Yip Tick-Hon; S. Li; H. P. Seow

2006-01-01

327

Experimental based finite element simulation of cold isostatic pressing of metal powders  

Microsoft Academic Search

The present work addresses the various ingredients required for reliable finite element simulations of cold isostatic pressing (CIP) of metal powders. A plastic constitutive model for finite deformation is presented and implemented into an explicit finite element (FE) code. The FE implementation is verified so that numerical errors (both temporal and spatial errors) are kept under control. Thereafter, uniaxial die

M. Szanto; N. Frage; S. Hartmann; Z. Yosibash

2008-01-01

328

Removal of highly crosslinked resists and hybrid polymers for single micro parts fabrication and nanoimprint stamp rework  

NASA Astrophysics Data System (ADS)

Thick photoresists, e.g. up to 1 mm layer thickness, are widely used for the manufacture of high aspect ratio microstructures, e.g. as mould for the fabrication of metallic micro parts. Such resists or materials exhibit high mechanical and chemical stability to non-deformably withstand a pattern transfer process, e.g. by electroplating. After the pattern transfer a solvent based removal is difficult or not possible in many cases. A selective mould removal - without the damage of electroplated metal structures - is required for the fabrication of single micro parts. As second application example UV curable and strongly crosslinkable inorganic-organic hybrid polymers such as OrmoComp ® and OrmoStamp ® are used in UV moulding. The cleaning and rework of these moulds or also of stamps for nanoimprint lithography (NIL) is a challenging task with increasing importance. The life time of an expensive master mould or stamp as well as of the replicated working stamps is important, and therefore the ability to rework such stamps without any defect or decreased resolution. Hence, we demonstrate the application of a plasma-assisted removal using the STP 2020 etching tool from MUEGGE [1] for remote dry etching of strongly crosslinked materials, i.e. the development of processes for the isotropical etching of highly crosslinked photoresists and hybrid polymer materials will be presented. In combination with this specific etching tool this technique shows a high potential to make plasma-assisted removal ready for industrial production.

Voigt, Anja; Engelke, Rainer; Ahrens, Gisela; Bullerjahn, Franziska; Schleunitz, Arne; Klein, Jan J.; Grützner, Gabi

2014-03-01

329

Public Relations Press Release  

E-print Network

Public Relations Department Page 1/2 Press Release Black Death Bacterium Identified Genetic at least 600 years. Tübingen, 30.08.2011 The Black Death claimed the lives of one-third of Europeans: Y. pestis confirmed in victims of the Black Death via high-throughput se- quencing of the pPCP1

Lubich, Christian

330

PRESS RELEASE FROM NEUROPSYCHOPHARMACOLOGY  

E-print Network

TO http://www.nature.com/npp Nature and nurture separately influence dopamine activity DOI: 10.1038/nppPRESS RELEASE FROM NEUROPSYCHOPHARMACOLOGY (http://www.nature.com/npp) For a paper. Its use is granted only for journalists and news media receiving it directly from the Nature

Cai, Long

331

Public Relations Press Release  

E-print Network

Public Relations Department Page 1/3 Press Release Ice Age paintings from the Swabian Jura have also been recovered. Although Ice Age cave paintings are well documented in western Europe Alb (Painted rocks: The end of the Ice Age art of the Swabian Jura). The exhibit runs from November 10

Lubich, Christian

332

Press Briefings Exercise.  

ERIC Educational Resources Information Center

Describes a college-level political science assignment where students access the full text of a White House or federal agency briefing; evaluate its content; and comment on the interpretation of the information in the national press. Includes a step-by-step guide to gathering and analyzing the information. (MJP)

Frantzich, Stephen

1995-01-01

333

Verification of Reproduction Simulation of the 2011 Great East Japan Tsunami Using Time-Stamp Data  

NASA Astrophysics Data System (ADS)

In the 2011 off the pacific coast of Tohoku earthquake tsunami, the significant damage and loss of lives were caused by large tsunami in the pacific coastal areas of the northern Japan. It is important to understand the situation of tsunami inundation in detail in order to establish the effective measures of disaster prevention. In this study, we calculated the detailed tsunami inundation simulation of Rikuzentakata city and verified the simulation results using not only the static observed data such as inundation area and tsunami height estimated by traces but also time stamp data which were recorded to digital camera etc. We calculated the tsunami simulation by non-linear long-wave theory using the staggered grid and leap flog scheme. We used Fujii and Satake (2011)'s model ver.4.2 as the tsunami source. The inundation model of Rikuzentakata city was constructed by fine ground level data of 10m mesh. In this simulation, the shore and river banks were set in boundary of calculation mesh. At that time, we have calculated two patterns of simulation, one condition is that a bank doesn't collapse even if tsunami overflows on it, another condition is that a bank collapses if tsunami overflows on it and its discharge exceeds the threshold. We can use the inundation area data, which was obtained by Geospatial Information Authority of Japan (GSI), and height data of tsunami trace, which were obtained by the 2011 Tohoku Earthquake Joint Survey (TTJS) group, as "static" verification data. Comparing the inundation area of simulation result with its observation by GSI, both areas are matched very well. And then, correlation coefficient between tsunami height data resulted from simulation and observed by TTJS is 0.756. In order to verify tsunami arrival time, we used the time stamp data which were recorded to digital camera etc. by citizens. Ushiyama and Yokomaku (2012) collected these tsunami stamp data and estimated the arrival time in Rikuzentakata city. We compared the arrival time resulted from tsunami simulation with estimated by Ushiyama and Yokomaku (2012) for some major points. The arrival time is earlier 2-4 minutes in the condition that a bank collapses when tsunami overflows and its discharge exceeds 0.05m2/s at each mesh boundary than in the condition that a bank doesn't collapse. And, on the whole the arrival time estimated from time stamp data is in accord with the result which were calculated in the condition that a bank collapse. We could verify reproducibility about not only the final tsunami inundation situation but also the temporal change of tsunami inundation situation by using the time stamp data. Acknowledgement In this study, we used tsunami trace data obtained by The 2011 Tohoku Earthquake Tsunami Joint Survey (TTJS) Group. Reference 1) Fujii and Satake: Tsunami Source of the Off Tohoku-Pacific Earthquake on March 11, 2011, http://iisee.kenken.go.jp/staff/fujii/OffTohokuPacific2011/tsunami_ja_ver4.2and4.6.html, 2011. 2) Ushiyama and Yokomaku: Estimation of situation in Rikuzentakata city just before tsunami attack based on time stamp data, J.JSNDS31-1, pp.47-58, 2012.

Honma, Motohiro; Ushiyama, Motoyuki

2014-05-01

334

Springback analysis for the stamping of an automotive part with high strength steel sheet  

NASA Astrophysics Data System (ADS)

The study of springback analysis of 440MPa high strength steel is investigated in this paper. Because of the springback phenomenon is related to the material properties and the deformation mechanism during the forming process, the material properties of 440MPa high strength steel are studied at first. The material properties of 440MPa high strength steel are obtained by conducting cyclic uniaxial tension-compression tests with different strain ranges. In order to apply the material properties obtained from the experiments to the finite element analysis, the material constants required in the Yoshida-Uemori model (Y-U model) with the Bauschinger effect considered are established. For realizing the springback characteristics of 440MPa high strength steel, the U-hat draw-bending and V-shape bending are examined by the finite element analysis. From the simulation results, it finds that the side wall curl phenomenon occurs in the U-hat drawbending and the springback phenomenon appears in the V-shape bending. Moreover, it also shows that the side wall curl phenomenon and springback phenomenon are more obvious in the finite element simulations with the Bauschinger effect considered. Finally, the validation of springback prediction is performed by stamping an engine hood reinforcement with 440MPa high strength steel sheet. From the stamping results, it shows that the simulation results of springback prediction are in a well agreement to the production part data. It also finds that the springback predictions are more accurate by the finite element simulations with the use of the Y-U model. It is also found that for a stamping part which is subjected to a reversed tension-compression deformation in the forming process, the occurrence of the Bauschinger effect is obvious. It is also concluded that the accuracy of springback prediction can be much improved by the use of material model with the Bauschinger effect considered.

Hung, Tzu-Hao; Tsai, Heng-Kuang; Chang, Chih-Kai; Hsu, Yu-Hung; Chen, Fuh-Kuo; Chung, Kuo-Hsin

2013-05-01

335

Simulation and Evaluation of Phase Transformations and Mechanical Response in the Hot Stamping Process  

SciTech Connect

When producing thin ultra high strength steel components with the hot stamping process it is essential that the final component achieves desirable material properties. This applies in particular to passive automotive safety components. Often the desirable microstructure consists of a mix of martensite and bainite. Therefore, it is of great importance to accurately predict the final microstructure of the component early in the product development process. In this work a model to predict the austenite decomposition into ferrite, pearlite, bainite and martensite during arbitrary cooling paths for thin sheet boron steel is used. The decomposition model is based on Kirkaldy's rate equations and later modifications by Li et al. The modified model accounts for the effect from the added boron. The model is implemented as part of a material subroutine in the Finite Element Program LS-DYNA 970. Both the simulated volume fractions of micro-constituents and hardness profiles show good agreement with the corresponding experimental observations. The phase proportions affect both the thermal and the mechanical properties during the process of continuous cooling and deformation of the material. A thermo-elastic-plastic constitutive model including effects from changes in the microstructure as well as transformation plasticity is implemented in the LS-DYNA code. The material model is used in combination with a thermal shell formulation with quadratic temperature interpolation in the thickness direction to simulate the complete process of simultaneous forming and quenching of sheet metal components. The implemented model is used in coupled thermo-mechanical analysis of the hot stamping process and evaluated by comparing the results from hot stamping experiments. The results from simulations such as local thickness variations, hardness distribution and spring-back in the component show good agreement with experimental results.0.

Oldenburg, Mats; Salomonsson, Per [Luleaa University of Technology, Dep of Applied Physics and Mechanical Engineering, SE-97187 Luleaa (Sweden); Aakerstroem, Paul; Bergman, Greger [Gestamp Hartech AB, SE-97125 Luleaa (Sweden)

2007-05-17

336

Wie LCC-Management die Produktionstechnik und die Instandhaltung verändert  

NASA Astrophysics Data System (ADS)

Die zunehmende Komplexität von Produktionsanlagen und deren steigende Investitionssummen erfordern eine intensive Nutzung und überschaubare Folgekosten, zum Beispiel in der Instandhaltung. Um diese Ziele beim Investitionsvorgang von Anlagen effizienter als in der Vergangenheit zu gestalten sind Organisationsverfahren wie Life Cycle Cost Management (LCC-Management) bzw. Total Cost of Ownership (TCO) sinnvoll. Dieser Beitrag zeigt, wie Hersteller und Betreiber bis heute mit diesen Verfahren die Auslegung und das Betriebsverhalten von Anlagen entwickeln, deren reduzierten Instandhaltungsaufwand prognostizieren und die Leistungen zum Vorteil beider Vertragspartner steigern.

Zick, Manfred

337

Nowcasting and Forecasting the Monthly Food Stamps Data in the US Using Online Search Data  

PubMed Central

We propose the use of Google online search data for nowcasting and forecasting the number of food stamps recipients. We perform a large out-of-sample forecasting exercise with almost 3000 competing models with forecast horizons up to 2 years ahead, and we show that models including Google search data statistically outperform the competing models at all considered horizons. These results hold also with several robustness checks, considering alternative keywords, a falsification test, different out-of-samples, directional accuracy and forecasts at the state-level. PMID:25369315

Fantazzini, Dean

2014-01-01

338

Nanofabrication via direct transfer of BOE treated PDMS stamp patterns onto SiO2 surfaces  

NASA Astrophysics Data System (ADS)

Various PDMS patterns with a few microns to sub-micron size and thickness of 20~30 nanometers were successfully transferred on the substrate via simple printing process of a buffered oxide etchant-treated PDMS stamp on the SiO2 substrate. The patterned PDMS layer acted as sacrificial layer for metal-film patterning and as chemical passivation layer for the selective adsorption of V2O5 nanowires. In particular, the electrical measurement of the patterned V2O5 nanowire network showed the semiconducting non-ohmic behavior in the channel.

Kim, Yong-Kwan; Park, Jae-Hyun; Shin, Gun-Chul; Ha, Jeong Sook; Park, So Jeong; Yi, Seong Min; Kim, Gyu Tae

2007-03-01

339

Single shot time stamping of ultrabright radio frequency compressed electron pulses  

SciTech Connect

We demonstrate a method of time-stamping Radio Frequency compressed electron bunches for Ultrafast Electron Diffraction experiments in the sub-pC regime. We use an in-situ ultra-stable photo-triggered streak camera to directly track the time of arrival of each electron pulse and correct for the timing jitter in the radio frequency synchronization. We show that we can correct for timing jitter down to 30 fs root-mean-square with minimal distortion to the diffraction patterns, and performed a proof-of-principle experiment by measuring the ultrafast electron-phonon coupling dynamics of silicon.

Gao, M.; Dwayne Miller, R. J. [Department of Chemistry and Physics, University of Toronto, Toronto, ON. M5S 3H6 (Canada); Max Planck Research Department for Structural Dynamics, Department of Physics, Center for Free Electron Laser Science, University of Hamburg, DESY, D-22607 Hamburg (Germany); Jiang, Y.; Kassier, G. H. [Max Planck Research Department for Structural Dynamics, Department of Physics, Center for Free Electron Laser Science, University of Hamburg, DESY, D-22607 Hamburg (Germany)

2013-07-15

340

Numerical Modeling for Springback Predictions by Considering the Variations of Elastic Modulus in Stamping Advanced High-Strength Steels (AHSS)  

NASA Astrophysics Data System (ADS)

This paper presents a numerical modeling approach for predicting springback by considering the variations of elastic modulus on springback in stamping AHSS. Various stamping tests and finite-element method (FEM) simulation codes were used in this study. The cyclic loading-unloading tensile tests were conducted to determine the variations of elastic modulus for dual-phase (DP) 780 sheet steel. The biaxial bulge test was used to obtain plastic flow stress data. The non-linear reduction of elastic modulus for increasing the plastic strain was formulated by using the Yoshida model that was implemented in FEM simulations for springback. To understand the effects of material properties on springback, experiments were conducted with a simple geometry such as U-shape bending and the more complex geometry such as the curved flanging and S-rail stamping. Different measurement methods were used to confirm the final part geometry. Two different commercial FEM codes, LS-DYNA and DEFORM, were used to compare the experiments. The variable elastic modulus improved springback predictions in U-shape bending and curved flanging tests compared to FEM with the constant elastic modulus. However, in S-rail stamping tests, both FEM models with the isotropic hardening model showed limitations in predicting the sidewall curl of the S-rail part after springback. To consider the kinematic hardening and Bauschinger effects that result from material bending-unbending in S-rail stamping, the Yoshida model was used for FEM simulation of S-rail stamping and springback. The FEM predictions showed good improvement in correlating with experiments.

Kim, Hyunok; Kimchi, Menachem

2011-08-01

341

Experimental Investigation About Stamping Behaviour of 3D Warp Interlock Composite Preforms  

NASA Astrophysics Data System (ADS)

Forming of continuous fibre reinforcements and thermoplastic resin commingled prepregs can be performed at room temperature due to its similar textile structure. The "cool" forming stage is better controlled and more economical. The increase of temperature and the resin consolidation phases after the forming can be carried out under the isothermal condition thanks to a closed system. It can avoid the manufacturing defects easily experienced in the non-isothermal thermoforming, in particular the wrinkling [1]. Glass/Polypropylene commingled yarns have been woven inside different three-dimensional (3D) warp interlock fabrics and then formed using a double-curved shape stamping tool. The present study investigates the in-plane and through-thickness behaviour of the 3D warp interlock fibrous reinforcements during forming with a hemispherical punch. Experimental data allow analysing the forming behaviour in the warp and weft directions and on the influence of warp interlock architectures. The results point out that the layer to layer warp interlock preform has a better stamping behaviour, in particular no forming defects and good homogeneity in thickness.

Dufour, Clément; Wang, Peng; Boussu, François; Soulat, Damien

2014-10-01

342

Springback Reduction in Stamping of Front Side Member with a Response Surface Method  

NASA Astrophysics Data System (ADS)

Springback is a common phenomenon in sheet metal forming since the elastic recovery of the internal stresses is induced after removal of the tooling. The numerical analysis of springback is a complicated time-consuming job and its result is greatly effected by a type of the yield function, finite elements used and the constraint condition for eliminating a rigid body motion. In this paper, optimization of the draw-bead force is carried out utilizing the response surface method in order to reduce springback and improve shape accuracy of a deep drawn product. In the optimization process, the tendency of springback is evaluated qualitatively without springback simulation usually done with the implicit solving scheme. Instead of springback simulation, the amount of stress deviation along the thickness direction in the deep drawn product is used as an indicator of springback. The stamping process is analyzed for a front side member formed with advanced high strength steel (AHSS) sheets such as DP60. The analysis procedure fully covers the binder-wrap, stamping, trimming and springback processes with the commercial elasto-plastic finite element code LS-DYNA 3D. The effect of the restraining force of draw-beads is confirmed with the decreased stress deviation. The analysis result shown in the final springback simulation demonstrates that the present analysis provides a guideline for controlling the evolution of springback based on the finite element simulation of complicated auto-body members.

Song, Jung-Han; Huh, Hoon; Kim, Se-Ho; Park, Sung-Ho

2005-08-01

343

Efficacy of StaMPS technique for monitoring surface deformation in L'Aquila, Italy  

NASA Astrophysics Data System (ADS)

This research work investigates the efficacy of the Stanford Method for Persistent Scatterer Interferometry (StaMPS) in measuring the surface deformation over the L'Aquila region, Italy just before an event of earthquake of magnitude Mw 6.3 by using seven descending Envisat C-Band ASAR images. The results show that the StaMPS technique successfully extracted sufficient number of Persistent Scatterers (PS) to derive a one dimensional (1D) time series displacement map which shows the deformation rates up to 59 mm/year in the satellite Line of Sight (LOS) direction and 50.8 mm/year in the direction opposite to the satellite LOS. Further, several deformation gradients are also observed from this map which indicate the occurrence of multiple crustal movement mechanism. Another dataset of 14 ASAR images is processed covering a time period before and after the earthquake in the study area to validate the results obtained by the previous dataset. We observed that the generated displacement map follows the deformation characteristics of the earlier displacement map in terms of magnitude and surface movement. We conclude that the generated displacement maps validate the presence of a normal fault mechanism with a tectonic process stretching in a NW-SE direction as predicted by earlier research studies.

Tiwari, A.; Dwivedi, R.; Narayan, A. B.; Dikshit, O.; Singh, A. K.

2014-11-01

344

Shape optimization of three-dimensional stamped and solid automotive components  

NASA Technical Reports Server (NTRS)

The shape optimization of realistic, 3-D automotive components is discussed. The integration of the major parts of the total process: modeling, mesh generation, finite element and sensitivity analysis, and optimization are stressed. Stamped components and solid components are treated separately. For stamped parts a highly automated capability was developed. The problem description is based upon a parameterized boundary design element concept for the definition of the geometry. Automatic triangulation and adaptive mesh refinement are used to provide an automated analysis capability which requires only boundary data and takes into account sensitivity of the solution accuracy to boundary shape. For solid components a general extension of the 2-D boundary design element concept has not been achieved. In this case, the parameterized surface shape is provided using a generic modeling concept based upon isoparametric mapping patches which also serves as the mesh generator. Emphasis is placed upon the coupling of optimization with a commercially available finite element program. To do this it is necessary to modularize the program architecture and obtain shape design sensitivities using the material derivative approach so that only boundary solution data is needed.

Botkin, M. E.; Yang, R.-J.; Bennett, J. A.

1987-01-01

345

Measurement of internal die pressure distributions during pultrusion of thermoplastic composites  

NASA Astrophysics Data System (ADS)

This paper describes the development and use of a thin, disposable pressure sensor designed specifically for monitoring pointwise through-the-thickness consolidation forces developed during composite processing. The unique postage stamp-sized sensor (11.1 mm diameter active gage area and 0.31 mm thickness) can be placed directly at points in or on a laminate where pressure data is desired. The sonsor's small dimensions and low cost permit it to be treated as a disposable item in aerospace and other composite fabrication applications. This paper will illustrate the use of the sensor as a means of measuring the pressures developed inside a die during the pultrusion of a graphite/ULTEM thermoplastic structure, as well as with other pultrusion processing examples.

Fanucci, Jerome P.; Nolet, Stephen C.; Koppernaes, Christian; Kim, Young R.

346

Die Gleichnisse von dem Wahlverwandschaften  

E-print Network

KU ScholarWorks | The University of Kansas Pre-1923 Dissertations and Theses Collection Die Gleichnisse von dem Wahlverwandschaften 1911 by Mattie Kent This work was digitized by the KU Libraries’ Office of Scholarly Communication and Copyright...

Kent, Mattie

1911-01-01

347

Die fermentative Spaltung des Acetylcholins  

Microsoft Academic Search

Zusammenfassung Es wird eine neue Methode zum Nachweis des Fermentes, das Acetylcholin in Cholin und Essigsäure hydrolysiert, die Cholinesterase, beschrieben. Das Verfahren ist nach derWarburgschen Methode aufgebaut.

R. Ammon

1934-01-01

348

Student Press Law Center  

NSDL National Science Digital Library

Created in 1974, the Student Press Law Center (SPLC) is the âÂÂnation's only legal assistance agency devoted exclusively to educating high school and college journalists about the rights and responsibilities embodied in the First Amendment.â Based in Arlington, Virginia the Center provides free legal advice and information along with low-cost educational materials. On its homepage, visitors can make their way through sections that include Know Your Rights and Classroom Resources. In Know Your Rights, visitors can learn about the rights of high school journalists and educators, peruse an online law library, and check out an interactive map tracking the latest legal developments in student press rights nationally. Moving on, the Classroom Resources area brings together dozens of classroom handouts, presentations, and some fun short quizzes regarding libel, privacy, and other media-law issues.

349

Improving care of dying children.  

PubMed Central

Every year about 5,000 children aged 0 to 14 years need hospice care in the United States. Children seem to know that they are dying, although this is difficult for parents to accept. Clear, empathic understanding is needed. Communication with clarity and understanding is imperative with the changes in goals from cure to palliation to comfort. The ideal place for most dying children is at home, where symptoms can be managed as effectively as in a hospital. PMID:7571589

Martinson, I M

1995-01-01

350

Development of a Press-Hardened Steel Suitable for Thin Slab Direct Rolling Processing  

NASA Astrophysics Data System (ADS)

The thin slab casting and direct rolling process is a hot-rolled strip production method which has maintained commercial quality steel grades as a major material in many industrial applications due to its low processing cost. Few innovative products have however been developed specifically for production by thin slab direct rolling. Press hardening or hot press forming steel grades which are now widely used to produce structural automotive steel parts requiring ultra-high strength and formability may however offer an opportunity for thin slab direct rolling-specific ultra-high strength products. In this work, a newly designed press hardening steel grade developed specifically for thin slab direct rolling processing is presented. The press hardening steel has a high nitrogen content compared with press hardening steel grades produced by conventional steelmaking routes. Boron and titanium which are key alloying additions in conventional press hardening steel such as the 22MnB5 press hardening steel grade are not utilized. Cr is added in the press hardening steel to obtain the required hardenability. The properties of the new thin slab direct rolling-specific 22MnCrN5 press hardening steel grade are reviewed. The evolution of the microstructure and mechanical properties with increasing amounts of Cr additions from 0.6 to 1.4 wt pct and the effect of the cooling rate during die-quenching were studied by means of laboratory simulations. The selection of the optimum chemical composition range for the thin slab direct rolling-specific 22MnCrN5 steel in press hardening heat treatment conditions is discussed.

Lee, Jewoong; De Cooman, Bruno C.

2015-01-01

351

A comparison of impulse drying to double felted pressing on pilot- scale shoe presses and roll presses  

SciTech Connect

Pilot-scale shoe press and roll press experiments have been conducted to compare impulse drying and double felted pressing. Both ceramic coated and Beloit Type C press rolls have been evaluated. The experiments show that impulse drying can provide significantly higher outgoing solids than double felled pressing at the same impulse. For example, at an impulse of 0.234 MPa seconds (34 psi seconds), sheets at an ingoing solids of 52% were impulse dried (using the Beloit Type C press roll) to 68% solids while optimized double felled pressing could only yield press dryness of, at most, 60%.

Orloff, D.I.

1992-08-01

352

The Patterns of Food Stamp and WIC Participation and Their Effects on Health of Low-Income Children  

Microsoft Academic Search

The primary purpose of the paper is to examine 1) the patterns of program participation in the Food Stamp Program (FSP) and the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) during the time of welfare reform in Illinois; and 2) the effects of WIC on young children's health outcomes. The study uses a unique linked data set

Lucy Mackey-Bilaver; Robert M. Goerge; Bong Joo Lee

2000-01-01

353

Millimeter-scale contact printing of aqueous solutions using a stamp made out of paper and tape  

E-print Network

Millimeter-scale contact printing of aqueous solutions using a stamp made out of paper and tape This communication describes a simple method for printing aqueous solutions with millimeter-scale patterns'') as a contact printing device. The device is made from inexpensive materials, and it is easily assembled by hand

Prentiss, Mara

354

Compilation of the Food Stamp Act of 1977 and Other Selected Federal Nutrition Statutes. 98th Congress, 2d Session.  

ERIC Educational Resources Information Center

This is a compilation of the Food Stamp Act of 1977 and other selected Federal nutrition statutes, including those relating to the Act and major authorities for domestic commodity distribution. The section on the Act itself covers policy, definitions, establishment, eligibility, issuance and use of coupons, value of allotment, approval of food…

Congress of the U.S., Washington, DC. House Committee on Agriculture.

355

The Thinning of the Net: An Analysis of Food Stamps, Population Change, and Poverty Growth. Strategic Issues Paper Series.  

ERIC Educational Resources Information Center

Changes in the Federal food stamp program have resulted in a reduction in the number of eligible people receiving needed food assistance and a weakening of the "safety net" that protects the needy from poverty, unemployment, and high medical costs. Blacks and Hispanic Americans appear to have been disproportionately affected by these changes.…

Small, Ken; And Others

356

Dying Calls for Mother: Factual or Fanciful?  

Microsoft Academic Search

There are anecdotal family reports of dying members vocalizing “mother” and cognate words. Do these dying words reflect fanciful accounts at the highly charged time of death, or are there such dying words from reliable witnesses? A search of the professional care literature found minimal relevant information, but nonfiction and fiction sources of combat deaths provided examples of dying warriors

Roy B. Lacoursiere

2010-01-01

357

Innovations in cold forging die design  

Microsoft Academic Search

The demand of the market to the major industrial cold forgers for the development and production of complicated net shape parts at fairly low unit costs requires innovative new die designs for the optimisation of die deflections. The high-stiffness STRECON® E+ containers influence the stresses, strains, and deflections in critical dies so that die lives can be improved by factors

Jens Groenbaek; Torben Birker

2000-01-01

358

Die kombinierte Kompressionsmarknagelarthrodese von OSG und USG  

Microsoft Academic Search

Zusammenfassung Die operative Versteifung von oberem (OSG) und unterem Sprunggelenk (USG) ist bei fortgeschrittenen degenerativen Veränderungen beider Gelenke unterschiedlicher Genese auch bei zunehmender Verbreitung des Oberflächenersatzes am OSG die Therapie der Wahl. Bisher sind verschiedene Techniken zur tibiotalokalkanealen Arthrodese beschrieben worden, wobei sich die Kompressionsarthrodese mit internen Implantaten durchgesetzt hat. 20 Patienten, bei denen die kombinierte Arthrodese von OSG und

M. Goebel; T. Mückley; L. Gerdesmeyer; M. Militz; V. Bühren

2003-01-01

359

Measure Your Sew - How: Pressing Points.  

E-print Network

8-1267 OC U A245.7, 73 , 1.1267 Measure Your Sew-How Pressing Points Texas Agricultural Extension Service . The Texas A&M University System . Daniel C. Pfannstiel, Director, College Station, Texas PRESSING POINTS Marlene Odle-Kemp* Pressing... Equipment Whether tailoring, sewing or just mending, pressing is an important part of clothing construction. Pressing provides shaping, neat edges and finishing touches for a professional look. Carefully pressing during garment construction results in a...

Odle-Kemp, Marlene

1979-01-01

360

CIDER PRESS, LOOKING SOUTHEAST ACROSS THE SCHUYLKILL RIVER. THIS PRESS, ...  

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

CIDER PRESS, LOOKING SOUTHEAST ACROSS THE SCHUYLKILL RIVER. THIS PRESS, CARVED OUT OF A LARGE BOULDER AT THE RIVERS EDGE, PROBABLY DATES FROM THE LIFETIME OF JOHN BARTRAM, IF NOT TO THE SWEDISH SETTLERS BEFORE HIM. THE IRON FENCE IS A NINETEENTH-CENTURY ADDITION - John Bartram House & Garden, 54th Street & Lindbergh Boulevard, Philadelphia, Philadelphia County, PA

361

Word Press Editorial Calendar  

NSDL National Science Digital Library

If you're a blogger, you probably make plans both grand and modest about publishing new posts and content. One can be easily overwhelmed by such plans, and it's nice to have a way to keep up to date with such important matters. For those using WordPress, the Editorial Calendar plugin allows users to view all of their posts, their status, and information about how many posts are planned for a given day or week. It's quite easy to use and it is compatible with all operating systems.

362

Heinrich Von Kleist Und Die Romantik  

E-print Network

Stimmungsreichen: Es zieht ihn unwiderstehlich zur Romantik. Freilich besass Kleist auch Eigenschaften, die die Romantik garnicht kannte. So haelt sich Kleist von dem Phrasennebel, dem romantisch Verschwommenen fern; der witzige, hoehnische Uebermut der andern... Romantiker war ihm nicht eigen. Die mit dem eigenen Kunstwerk spie- lende Ironie kennt er nicht; er beachtet streng die Ge- setze des Dramas. In knappe Form mit erschuetternder Wucht huellt er nur das Wesentliche ein, und je groesser die Charaktere, je...

Kliewer, Johann Carl

1914-06-01

363

Development and testing of neutron pulse time stamping data acquisition system for neutron noise experiment  

NASA Astrophysics Data System (ADS)

Statistical correlation techniques find applications in the analysis of zero power reactor noise and in passive neutron assay (PNA). A large number of apparently different techniques have been in use in these application areas and traditionally the electronics modules used for data acquisition and analysis is specific to the method used. In this paper we describe a data acquisition scheme developed by us, which is independent of the specific analysis method and can therefore be used for all of them. This is a neutron time stamping data acquisition system based on a timer card and an interface software to acquire and store the data in the required format. The system has been successfully tested with two statistically different types of neutron sources, namely a random Poisson source (Pu-Be) and a correlated source (a nuclear reactor).

Kumar, Rajeev; Yakub Ali, M.; Degweker, S. B.; Vishwasrao, S. C.; Jadhav, R. T.

2015-01-01

364

Using Worldfip for Synchronization and Time Stamping in the LHC Accelerator  

E-print Network

Time is one of the key topics in the construction of particle accelerators for which very accurate synchronization and high resolution time stamping are required. Nowadays, accelerator control systems may profit of the same industrial components than automotive industries and oil refineries are using: PLCs and Fieldbuses. WorldFIP, one of the three fieldbuses that have been selected at CERN, is the only one that is intrinsically deterministic. Therefore, in addition to the general control and monitoring functions that any fieldbus may provide, its determinism brings in the unique capability of transmitting time related data for setting to the same value the clocks of the equipment. With the use of the GPS, any equipment located around the Large Hadron Collider (LHC) accelerator may thus be exactly in phase with the Universal Time. Thanks to its judicious design, WorldFIP supports also many other very interesting features like Web or video transmission. Current developments around this powerful fieldbus will a...

Brun, R; Sicard, Claude Henri

2003-01-01

365

Spectral analysis of postage stamps and banknotes from the region of Rijeka in Croatia  

NASA Astrophysics Data System (ADS)

Micro-Raman spectroscopy and X-ray emission spectroscopy induced using radioactive source have been applied to analyze two types of samples important for the history of Rijeka, Croatian port on the Adriatic Sea. In this paper we will present study of thirty-three original Hungarian postage stamps issued for Rijeka and overprinted with the word FIUME in 1918, after the World War I and the one-Lira banknotes (one original brown banknote and four trial prints: brown, blue, green and dark green) from Economy bank for Rijeka, Istria and Slovenian Littoral (1945-1947), the so-called Jugolire. This investigation was carried out to determine the differences between the original machine, original hand-made and fake overprints FIUME and to compare the pigments used on original banknote from circulation with the pigments on the trial prints.

Jelovica Badovinac, I.; Orli?, N.; Lofrumento, C.; Dobrini?, J.; Orli?, M.

2010-07-01

366

A Fully Integrated Humidity Sensor System-on-Chip Fabricated by Micro-Stamping Technology  

PubMed Central

A fully integrated humidity sensor chip was designed, implemented, and tested. Utilizing the micro-stamping technology, the pseudo-3D sensor system-on-chip (SSoC) architecture can be implemented by stacking sensing materials directly on the top of a CMOS-fabricated chip. The fabricated sensor system-on-chip (2.28 mm × 2.48 mm) integrated a humidity sensor, an interface circuit, a digital controller, and an On-Off Keying (OOK) wireless transceiver. With low power consumption, i.e., 750 ?W without RF operation, the sensitivity of developed sensor chip was experimentally verified in the relative humidity (RH) range from 32% to 60%. The response time of the chip was also experimentally verified to be within 5 seconds from RH 36% to RH 64%. As a consequence, the implemented humidity SSoC paves the way toward the an ultra-small sensor system for various applications.

Huang, Che-Wei; Huang, Yu-Jie; Lu, Shey-Shi; Lin, Chih-Ting

2012-01-01

367

Clinical management of dying patients.  

PubMed Central

Dying is universal, and death should be a peaceful time. Myriad comfort measures are available in the last weeks before life ends. Discussions about end-of-life issues often suffer from lack of informed opinion. Palliative care experts have identified specific somatic and psychological sources of distress for dying patients and their loved ones. Pain, shortness of breath, nausea and vomiting, and fear of abandonment contribute substantially to both physical and psychological discomfort toward the end of life. Simple, effective methods exist for relieving those symptoms. Knowledge about the natural events associated with dying and an informed approach to medical and psychological interventions contribute to systematic and successful comfort care. We describe the origin of physical and psychological distress at the end of life and provide strategies for alleviating many of the discomforts. PMID:7571591

Gavrin, J; Chapman, C R

1995-01-01

368

Acting to let someone die.  

PubMed

This paper examines the recent prominent view in medical ethics that withdrawing life-sustaining treatment (LST) is an act of killing. I trace this view to the rejection of the traditional claim that withdrawing LST is an omission rather than an act. Although that traditional claim is not as problematic as this recent prominent view suggests, my main claim is that even if we accepted that withdrawing LST should be classified as an act rather than as an omission, it could still be classified as letting die rather than killing. Even though omissions are contrasted with acts, letting die need not be, for one can let die by means of acts. The remainder of the paper is devoted to establishing this claim and addresses certain objections to it. PMID:24320715

McGee, Andrew

2015-02-01

369

Foreign body giant cells and osteoclasts are TRAP positive, have podosome-belts and both require OC-STAMP for cell fusion.  

PubMed

Macrophages have the ability to fuse and form multinucleated giant cells such as Osteoclast (OCs) and FBGCs. Osteoclast stimulatory transmembrane protein (OC-STAMP) is an important cell surface protein involved in the formation of OCs. This study sought to determine if OC-STAMP also regulates formation of FBGCs using expression analysis and subsequent inhibition studies. qPCR and Western blot analysis showed that OC-STAMP expression is significantly higher in FBGCs compared to control monocytes (P < 0.05). Four days following cell culture, OCs were positive for TRAP and F-actin ring formation, but FBGCs were not. In contrast, FBGCs were positive for TRAP and showed podosome belts comprised of F-actin on Day 8. FBGCs were subsequently plated onto dentine, but despite presenting some morphologic features of OCs (OC-STAMP expression, TRAP reactivity, and podosome belts) they failed to resorb bone. To evaluate a role for OC-STAMP in FBGCs, we inhibited this cell surface protein with anti-OC-STAMP antibody and observed that cell fusion and podosome belt formation was inhibited in both OCs and FBGCs. Our data support the hypothesis that OC-STAMP is a regulatory molecule for FBGCs; and that they are functionally distinct from OCs, despite similarities in gene expression profile, podosome belt formation, and TRAP expression. PMID:23444125

Khan, Usman A; Hashimi, Saeed M; Bakr, Mahmoud M; Forwood, Mark R; Morrison, Nigel A

2013-08-01

370

ARTICLE IN PRESS Physica A ( )  

E-print Network

as the smoothing Corresponding author. E-mail address: lovejoy@physics.mcgill.ca (S. Lovejoy). 0378-4371/$ ­ see this article in press as: S. Lovejoy, et al., Scattering in thick multifractal clouds, Part II: Multiple scattering, Physica A (2009), doi:10.1016/j.physa.2009.05.037 #12;ARTICLE IN PRESS 2 S. Lovejoy et al. / P

Lovejoy, Shaun

371

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY  

E-print Network

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY (http://www.nature.com/tp/) This press release is copyrighted to the journal Translational Psychiatry Its use is granted only for journalists and news media: While we are happy for images from Translational Psychiatry to be reproduced for the purposes

Cai, Long

372

PRESS RELEASE FROM MOLECULAR PSYCHIATRY  

E-print Network

PRESS RELEASE FROM MOLECULAR PSYCHIATRY (http://www.nature.com/mp) For a paper that will be published online on 09 August 2011 This press release is copyrighted to the journal Molecular Psychiatry of 1934. PICTURES: While we are happy for images from Molecular Psychiatry to be reproduced

Cai, Long

373

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY  

E-print Network

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY (http://www.nature.com/tp/) This press release is copyrighted to the journal Translational Psychiatry Its use is granted only for journalists and news media of 1934. PICTURES: While we are happy for images from Translational Psychiatry to be reproduced

Cai, Long

374

PRESS RELEASE FROM MOLECULAR PSYCHIATRY  

E-print Network

PRESS RELEASE FROM MOLECULAR PSYCHIATRY (http://www.nature.com/mp) For papers that will be published online on 30 August 2011 This press release is copyrighted to the journal Molecular Psychiatry Exchange Act of 1934. PICTURES: While we are happy for images from Molecular Psychiatry to be reproduced

Cai, Long

375

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY  

E-print Network

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY (http://www.nature.com/tp/) This press release is copyrighted to the journal Translational Psychiatry Its use is granted only for journalists and news media Translational Psychiatry to be reproduced for the purposes of contemporaneous news reporting, you must also seek

Cai, Long

376

PRESS RELEASE FROM MOLECULAR PSYCHIATRY  

E-print Network

PRESS RELEASE FROM MOLECULAR PSYCHIATRY (http://www.nature.com/mp) For papers that will be published online on 21 February 2012 This press release is copyrighted to the journal Molecular Psychiatry Exchange Act of 1934. PICTURES: While we are happy for images from Molecular Psychiatry to be reproduced

Cai, Long

377

ARTICLE IN PRESS Physica A ( )  

E-print Network

ARTICLE IN PRESS Physica A ( ) ­ Contents lists available at ScienceDirect Physica A journal either solves or at least decouples the spatial degrees of freedom so that the original problem becomes reserved. doi:10.1016/j.physa.2010.03.017 Please cite this article in press as: S. �stlund, A one

Ã?stlund, Stellan

378

Kingston University Press Limited (KUP)  

E-print Network

Kingston University Press Limited (KUP) Freedom of Information Act 2000 Publication Scheme December 2008 #12;Freedom of Information Act 2000 The Freedom of Information Act 2000 (the Act) gives a right, with some exemptions, for access to all types of recorded information held by Kingston University Press

Matthews, Adrian

379

'Die Zeit' im Konversationsunterricht ('Die Zeit' in a Conversation Class)  

ERIC Educational Resources Information Center

The German weekly newspaper "Die Zeit" contains a very rich variety of topics and is therefore an inexhaustable source for an exciting conversation class. This article outlines and lists the advantages of a German conversation course organized around this newspaper. (Text is in German.) (TL)

Becker-Cantarino, Barbel

1975-01-01

380

Dying radio galaxies in clusters  

NASA Astrophysics Data System (ADS)

Aims: We present a study of five "dying" nearby (z ? 0.2) radio galaxies belonging to both the WENSS minisurvey and the B2 bright catalogs WNB1734+6407, WNB1829+6911, WNB1851+5707, B2 0120+33, and B2 1610+29. Methods: These sources have been selected on the basis of their extremely steep broad-band radio spectra, which strongly indicates that either these objects belong to the rare class of dying radio galaxies or we are observing "fossil" radio plasma remaining from a previous instance of nuclear activity. We derive the relative duration of the dying phase from the fit of a synchrotron radiative model to the radio spectra of the sources. Results: The modeling of the integrated spectra and the deep spectral index images obtained with the VLA confirmed that in these sources the central engine has ceased to be active for a significant fraction of their lifetime, although their extended lobes have not yet completely faded away. We found that WNB1851+5707 is in reality composed of two distinct dying galaxies, which appear blended together as a single source in the WENSS. In the cases of WNB1829+6911 and B2 0120+33, the fossil radio lobes are seen in conjunction with a currently active core. A very faint core is also detected in a MERLIN image of WNB1851+5707a, one of the two dying sources composing WNB1851+5707. We found that all sources in our sample are located (at least in projection) at the center of an X-ray emitting cluster. Conclusions: Our results suggest that the duration of the dying phase for a radio source in a cluster can be significantly higher than that of a radio galaxy in the field, although no firm conclusions can be drawn because of the small number statistics involved. The simplest interpretation of the tendency for dying galaxies to be found in clusters is that the low-frequency radio emission from the fading radio lobes lasts longer if their expansion is somewhat reduced or even stopped. Another possibility is that the occurrence of dying sources is higher in galaxy clusters. We argue that radio sources in dense environments, such as the center of cooling core clusters, may have a peculiar accretion mode which results in a bursting duty cycle sequence of active and quiescent periods. This result could have important implications for theories of the life cycles of radio sources and AGN feedback in clusters of galaxies but awaits confirmation from future observations of larger, statistically significant, samples of objects.

Murgia, M.; Parma, P.; Mack, K.-H.; de Ruiter, H. R.; Fanti, R.; Govoni, F.; Tarchi, A.; Giacintucci, S.; Markevitch, M.

2011-02-01

381

MiR-7b directly targets DC-STAMP causing suppression of NFATc1 and c-Fos signaling during osteoclast fusion and differentiation.  

PubMed

DC-STAMP is a key regulating molecule of osteoclastogenesis and osteoclast precursor (OCP) fusion. Emerging lines of evidence showed that microRNAs play crucial roles in bone metabolism and osteoclast differentiation, but no microRNA has yet been reported to be directly related to OCPs fusion. Through a microarray, we found that the expression of miR-7b in RAW264.7 cells was significantly decreased after induction with M-CSF and RANKL. The overexpression of miR-7b in RAW264.7 cells attenuated the number of TRAP-positive cells number and the formation of multinucleated cells, whereas the inhibition of miR-7b enhanced osteoclastogenesis. Through a dual luciferase reporter assay, we confirmed that miR-7b directly targets DC-STAMP. Other fusogenic molecules, such as CD47, ATP6v0d2, and OC-STAMP, were detected to be down-regulated in accordance with the inhibition of DC-STAMP. Because DC-STAMP also participates in osteoclast differentiation through the ITAM-ITIM network, multiple osteoclast-specific genes in the ITAM-ITIM network were detected to identify how DC-STAMP is involved in this process. The results showed that molecules associated with the ITAM-ITIM network, such as NFATc1 and OSCAR, which are crucial in osteoclastogenesis, were consistently altered due to DC-STAMP inhibition. These findings suggest that miR-7b inhibits osteoclastogenesis and cell-cell fusion by directly targeting DC-STAMP. In addition, the inhibition of DC-STAMP and its downstream signals changed the expression of other fusogenic genes and key regulating genes, such as Nfatc1, c-fos, Akt, Irf8, Mapk1, and Traf6. In conclusion, our findings indicate that miR-7b may be a potential therapeutic target for the treatment of osteoclast-related bone disorders. PMID:25123438

Dou, Ce; Zhang, Chengcheng; Kang, Fei; Yang, Xiaochao; Jiang, Hong; Bai, Yan; Xiang, Junyu; Xu, Jianzhong; Dong, Shiwu

2014-11-01

382

Fabrication process analysis and experimental verification for aluminum bipolar plates in fuel cells by vacuum die-casting  

NASA Astrophysics Data System (ADS)

There are various methods for the fabrication of bipolar plates, but these are still limited to machining and stamping processes. High-pressure die casting (HPDC) is an ideal process for the manufacture of bipolar plates This study aims to investigate the formability of bipolar plates for polymer electrolyte membrane fuel cells (PEMFCs) fabricated by vacuum HPDC of an Al-Mg alloy (ALDC6). The cavity of the mold consisted of a thin-walled plate (200 mm × 200 mm × 0.8 mm) with a layer of serpentine channel (50 mm × 50 mm). The location and direction of the channel in the final mold design was determined by computational simulation (MAGMA soft). In addition, simulation results for different conditions of plunger stroke control were compared to those from actual die-casting experiments. Under a vacuum pressure of 35 kPa and for injection speeds of 0.3 and 2.5 m s-1 in the low and high speed regions, respectively, the samples had few casting defects. In addition, the hardness was higher and porosity in microstructure was less than those of the samples made under other injection speed conditions. In case of thin-walled plates, vacuum die casting is beneficial in terms of formability compared to conventional die casting.

Jin, Chul Kyu; Kang, Chung Gil

2011-10-01

383

Iran Weekly Press Digest  

NSDL National Science Digital Library

The Iran Weekly Press Digest, a weekly review of the Iranian press in English, contains a number of articles on the summit of the Organisation of the Islamic Conference and its significance for Iran in its archived and current issues. The eighth summit of the Organisation of the Islamic Conference was recently held in Tehran, Iran. Iran recently hosted representatives from 55 countries to a three-day Muslim summit in Tehran in a move which is being seen as a new phase in the country's re-emergence after years of relative isolation. The acceptance of Iran's invitations by senior figures from former enemies such as Saudi Arabia and Iraq has been portrayed by Iranian leaders and many others as a strong setback for US attempts to politically quarantine that country. Representatives considered 142 resolutions prepared by foreign ministers on issues including Middle East peace, regional conflicts, terrorism and human rights. However, perhaps the most significant outcome of the summit has been a reintroduction of Iran into the Muslim community of nations. Capitalizing on current anti-American sentiments and the recent election of a relatively moderate president, Iran hopes to rebuild its relationships with its neighbors and once again become a regional leader, a position it held for approximately 3000 years.

1997-01-01

384

Former Supreme Court Justice Henry Blackman Dies  

NSDL National Science Digital Library

This week's In the News looks back at the life and legal legacy of former US Supreme Court Associate Justice Harry Andrew Blackmun, who died last Thursday at the age of 90, five years after a contentious 24-year tenure with the court. Raised in Minnesota and educated at Harvard University, Blackmun served as a judge in the US Court of Appeals for the 8th Circuit before being appointed to the Supreme Court by President Nixon in 1970. Blackmun entered the court as a moderate conservative, but by the end of his long career, his convictions had shifted, and he became regarded as a strong progressive voice championing civil and personal liberties. Blackmun claimed that his ideologies did not change over the course of his career and that his apparent leftward shift was a reflection of the court's transformation to conservatism between 1969 and 1991. During that time period, nine conservative Republican appointees entered the court, replacing several liberal justices and altering the court's composition. Yet despite his self-proclaimed moderate views, Blackmun will be remembered for his liberal jurisprudence, most notably demonstrated in the landmark 50-page majority opinion that he authored in 1973 in the case of Roe v. Wade, which established the constitutional right to abortion. In other important Supreme Court opinions, Blackmun provided a liberal voice as an advocate of free speech, affirmative action, gay rights, and women's rights as well as an opponent of capital punishment. In an interview with The Associated Press after his retirement, Justice Blackmun, who was considered to be a diligent and unassuming man, understated his legal legacy: "I hope I would be remembered as a person of judicial integrity . . . known just as a good worker . . . who held his own and contributed generally to the advancement of the law." The nine resources discussed provide recent news, Supreme Court history, and the full text of related legal documents.

Osmond, Andrew.

385

Effect Of Die Design On Strength And Deformability Of Hollow Extruded Profiles  

NASA Astrophysics Data System (ADS)

In this paper, the behaviour of two different die design concepts in the production of the same industrial profile is described by both experimental tests and numerical FEM analysis. The investigated parameter is the shape of the leg for the extrusion of an AA6060 round tube 80mm in diameter and 1mm in thickness. Press loads and profile temperatures were monitored during the production. The processes are simulated by means of Deform 3D fully coupled simulations. and the results compared with the experimental ones. The profile are characterized by means of tensile tests in order to evaluate strength and deformability of the joints, and the results are related to the welding parameters as they were obtained by FEM. Finally, the die stress is investigated in order to explain tool life behaviour of the dies as it was observed during their whole life.

Donati, L.; Tomesani, L.

2007-04-01

386

Robert Merton Dies at 92  

ERIC Educational Resources Information Center

This article features Robert Merton, who died recently at age 92. Merton came into this world as a Jewish baby named Meyer Schkolnick. He lived in South Philly where his parents wrenched a living as blue-collar workers. Merton chose an Anglicized name to move into the Yankee dominated America of the 20's and 30's. At Harvard, he studied under…

Snell, Joel C.

2006-01-01

387

Die hohe Schule der Unternehmensplanung  

Microsoft Academic Search

\\u000a Die unbedenkliche Nutzung zukunftsbezogener Informationen für unternehmerische Entscheidungen überfordert viele Topmanager.\\u000a Dennoch entspricht sie einem unwiderstehlichen Drang hoch bezahlter Führungskader. Der Reiz der Planung liegt in der Möglichkeit,\\u000a sie so kompliziert zu gestalten, dass sie ehrgeizige Führungskräfte zu weiterer Komplexsteigerung befähigt.

Sebastian Hakelmacher

388

Red needles signify dying pines  

USGS Multimedia Gallery

Reddish, dry needles are a sign of dying trees infested with mountain pine beetles.  Mountain pine beetle outbreaks can result in the loss of millions of pine trees throughout western North America. The beetles lay eggs and develop in the bark of mountain trees, especially lodgepole, ponderosa...

389

Dying pine infested with beetles  

USGS Multimedia Gallery

Mountain pine beetle-infested trees turn a striking red color throughout their crown as they're dying. Mountain pine beetle outbreaks can result in the loss of millions of pine trees throughout western North America. The beetles lay eggs and develop in the bark of mountain trees, especially lodgepo...

390

What Happens When Someone Dies?  

MedlinePLUS

... Updated: January 22, 2015 Understanding Health Care Decisions Things to Do After Someone Dies Related Publications Mourning the Death of a Spouse Getting Your Affairs in Order Also of Interest End-of-Life Care - Alzheimer’s Caregiving Tip Sheet ( ...

391

UNIVERSIT DE GENVE Dies Academicus  

E-print Network

Dufour, Auditoire Piaget Palmarès de l'année civile 1999 #12;Programme officiel de la journée du Dies connaissance Allocution de Monsieur Jean-Luc FALCONE Membre du Conseil de l'Université Représentant des

Loewith, Robbie

392

Charles Darwin University Press www.cdu.edu.au/cdupress About CDU Press2  

E-print Network

Dry Season 2009 Charles Darwin University Press www.cdu.edu.au/cdupress #12;About CDU Press2 Season 2009 Catalog CDU Press is the publishing house of Charles Darwin University. We publish books to read. Wendy Brady Chair, CDU Press Editorial Board Charles Darwin University Press www

393

Die Bedeutung der Müllerzelle für die Pathogenese der equinen rezidivierenden Uveitis und Etablierung einer equinen Müllerzelllinie.  

E-print Network

??Die equine rezidivierende Uveitis (ERU) stellt weltweit die häufigste Ursache für eine erworbene Blindheit bei Pferden dar. Diese spontan auftretende, autoimmun-mediierte Augenentzündung tritt in der… (more)

Eberhardt, Christina

2011-01-01

394

Open Humanities Press  

NSDL National Science Digital Library

As more and more journals elect to move to an open-source model, it is delightful to learn about the existence of the Open Humanities Press (OHP). Their mission is "to make leading works of contemporary critical thought freely available worldwide." First-time visitors will want to look over the "About OHP" section before delving into the rest of the site. Afterwards, they should feel free to look through one of their seven journals, which include "Cosmos and History", "Culture Machine", "Film-Philosophy", and "Fibreculture". While all of the journals are worth a look, the "Film-Philosophy" journal is particularly compelling, and visitors can browse through issues back to 1997. Finally, visitors can also learn about submitting their work for consideration and also take in a few essays about the guiding principles and history of the OHP.

395

American Press Institute  

NSDL National Science Digital Library

The American Press Institute has been providing high-quality resources for practicing journalists for years, and now visitors with a penchant for the field can find out about some of these helpful materials on this site. While their homepage can be a bit visually hard to follow, the resources here are top-notch, and include some first-rate publications, such as âÂÂReaching Latino Audiencesâ and âÂÂWomen, Men and Newsroom LeadershipâÂÂ. The âÂÂJournalistâÂÂs Toolboxâ is a real find, as it contains a number of easy-to-use resources on such materials as copyediting, Iraq, and reporting on technology affairs. Additionally, there is a fine area dedicated to business journalism, including helpful hints on how best to deploy statistics in such pieces of writing. Overall, the site is extremely useful, and it is worth visiting several times.

2005-01-01

396

The thermal fatigue resistance of H-13 Die Steel for aluminum die casting dies  

NASA Technical Reports Server (NTRS)

The effects of welding, five selected surface coatings, and stress relieving on the thermal fatigue resistance of H-13 Die Steel for aluminum die casting dies were studied using eleven thermal fatigue specimens. Stress relieving was conducted after each 5,000 cycle interval at 1050 F for three hours. Four thermal fatigue specimens were welded with H-13 or maraging steel welding rods at ambient and elevated temperatures and subsequently, subjected to different post-weld heat treatments. Crack patterns were examined at 5,000, 10,000, and 15,000 cycles. The thermal fatigue resistance is expressed by two crack parameters which are the average maximum crack and the average cracked area. The results indicate that a significant improvement in thermal fatigue resistance over the control was obtained from the stress-relieving treatment. Small improvements were obtained from the H-13 welded specimens and from a salt bath nitrogen and carbon-surface treatment. The other surface treatments and welded specimens either did not affect or had a detrimental influence on the thermal fatigue properties of the H-13 die steel.

1982-01-01

397

7 CFR Appendix A to Part 277 - Principles for Determining Costs Applicable to Administration of the Food Stamp Program by State...  

Code of Federal Regulations, 2010 CFR

...cost determination and are not intended...extent of Federal and State or local...is based on the fundamental premises that...for the efficient and effective administration of the Food Stamp...sound management practice. (b)...

2010-01-01

398

An analysis of the Supramolecular NanoStamping technology for its market potential based upon a review of DNA microarray intellectual property  

E-print Network

Supramolecular NanoStamping is a novel printing method for exploiting the supramolecular interactions between organic and biological molecules. This technology is advantageous because of the ability to transfer a massive ...

Li, Kathy H. (Kathy Hsinjung)

2006-01-01

399

Method for Fabricating Composite Structures Using Continuous Press Forming  

NASA Technical Reports Server (NTRS)

A method for fabricating composite structures at a low-cost. moderate-to-high production rate. A first embodiment of the method includes employing a continuous press forming fabrication process. A second embodiment of the method includes employing a pultrusion process for obtaining composite structures. The methods include coating yarns with matrix material, weaving the yarn into fabric to produce a continuous fabric supply and feeding multiple layers of net-shaped fabrics having optimally oriented fibers into a debulking tool to form an undebulked preform. The continuous press forming fabrication process includes partially debulking the preform, cutting the partially debulked preform and debulking the partially debulked preform to form a net-shape. An electron-beam or similar technique then cures the structure. The pultrusion fabric process includes feeding the undebulked preform into a heated die and gradually debulking the undebulked preform. The undebulked preform in the heated die changes dimension until a desired cross-sectional dimension is achieved. This process further includes obtaining a net-shaped infiltrated uncured preform, cutting the uncured preform to a desired length and electron-beam curing (or similar technique) the uncured preform. These fabrication methods produce superior structures formed at higher production rates. resulting in lower cost and high structural performance.

Farley, Gary L. (Inventor)

1997-01-01

400

Fabrication of fiber reinforced metal matrix composites by squeeze casting technology  

Microsoft Academic Search

Squeeze forming process is a special casting technique that combines the advantages of traditional high pressure die casting, gravity permanent mold die casting and common forging technology. It is a relatively new casting process. It is otherwise called squeeze forming, liquid forging, liquid pressing, extrusion casting, liquid metal stamping, pressure crystallization and corthias casting. The above said process was first

T. R. Vijayaram; S. Sulaiman; A. M. S. Hamouda; M. H. M. Ahmad

2006-01-01

401

Henning Schmidgen Die Helmholtz-Kurven  

E-print Network

3 Henning Schmidgen Die Helmholtz-Kurven Auf der Spur der verlorenen Zeit Merve Verlag Berlin #12. Beide sind Mitte des 19. Jahr- hunderts entstanden, beide tragen sie die Signatur »Helmholtz«, und bei

Schubart, Christoph

402

Die elektrische Leitfähigkeit des reinen Hexans  

Microsoft Academic Search

Arbeitsplan. - Die elektrische Meßmethode. - Das Reinigungsverfahren. - Versuchsergebnisse. - Die äußere Strahlung. - Einfluß der Feldstärke. - Einfluß der Feldrichtung. Aufladung. - Einfluß der Temperatur. - Einfluß der Gefäßwände. Strahlung gewöhnlicher Materialien. - Erzwungene Leitfähigkeit. - Ausblick. - Zusammenfassung der Ergebnisse.

George Jaffé

1909-01-01

403

Guide for extrusion dies eliminates straightening operation  

NASA Technical Reports Server (NTRS)

To prevent distortion of extruded metal, a guidance assembly is aligned with the die. As the metal emerges from the extrusion dies, it passes directly into the receiver and straightening tube system, and the completed extrusion is withdrawn.

Gyorgak, C. A.; Hoover, R. J.

1964-01-01

404

Discriminator amplitude walk correction in gamma-ray coincidence experiments using list-mode time-stamping data acquisition  

NASA Astrophysics Data System (ADS)

When pulse amplitude and time stamp are recorded in list-mode time-stamping data acquisition, it is possible to correct for the system amplitude walk, typically observed as the time pickoff dependence on pulse amplitude. In this study, a method of correcting for amplitude walk during post-acquisition analysis of such list mode data is developed and demonstrated. The method is demonstrated using a simple two-channel system and a photon source capable of producing coincidence events ( 22Na). Two leading-edge discriminators, vulnerable to the amplitude walk, were used to produce the time pickoffs. The resulting corrected data show an amplitude walk less than the detector timing resolution. The method developed can be used in list-mode data acquisition systems such as medical imaging scanners or Compton scatter cameras.

Khamzin, Murat K.; Valentine, John D.

2003-06-01

405

The Pindar Press London 2009  

E-print Network

;Published by The Pindar Press 40 Narcissus Road London NW6 1TH · UK British Library Cataloguing a century ago, there raged two major international debates about rival claimants in wars of attribution

406

[Dying with cancer: Hollywood lessons].  

PubMed

The study attempts to understand how dying from cancer is portrayed by five movies produced in Hollywood between 1993 and 2006. Based on the cultural studies and their post-structuralism version and supported by the notions of discourse and subjectivity, as proposed by philosopher Michel Foucault, we suggest one of the possible readings of the movie picture corpus. We assess how the movie picture discourse acts as a cultural pedagogy that produces ways of seeing dying with cancer: immortalizing the healthy body image, silencing death, taking care of the dead body and, finally, accepting death. Our proposal is intended to stimulate reflections that may contribute to care and education in nursing. PMID:25080714

Niemeyer, Fernanda; Kruse, Maria Henriqueta Luce

2013-12-01

407

Racing Game with One Die  

NSDL National Science Digital Library

This interactive applet allows students to discover how probability can influence the outcome of a game. Learners control the winning and losing outcomes on a single die in a race between two cars. Data can be generated for individual rolls and races, or can be accumulated for any number of races. This game enables students to gain a deeper understanding of theoretical and experimental probability. Help tips for users and exploration questions for educators are provided.

2012-01-01

408

Die Aufklärungspflicht in der Notfallmedizin  

Microsoft Academic Search

Zusammenfassung  Die Aufklärungspflicht vor medizinischen Maßnahmen trifft neben Ärzten auch Angehörige der anderen Medizinberufe. Sie gilt\\u000a grundsätzlich in der präklinischen wie der innerklinischen Notfallmedizin und hat im persönlichen Gespräch zu erfolgen. Auch\\u000a eine indizierte und kunstgerecht durchgeführte Therapie ist zivilrechtlich prinzipiell rechtswidrig und kann Schadenersatzansprüche\\u000a begründen, wenn der Patient mangels ausreichender Aufklärung nicht rechtswirksam einwilligen konnte. Es gibt keine gesetzliche\\u000a Regelung

S. Koppensteiner; D. Lippert; Springer Medizin; Bezirksgericht Neunkirchen; Karl Landsteiner

2009-01-01

409

Fluxless die bonding for optoelectronics  

Microsoft Academic Search

Two new approaches are described for epi-down die bonding of diode lasers. The first approach, based on an acetic acid vapor flux, eliminates complications associated with the use of liquid flux in optoelectronic packaging. Based on this approach, InGaAsP\\/InP laser arrays were soldered onto silicon substrates. These laser arrays, which were passively aligned to single-mode optical fibers on the silicon

R. Boudreau; M. Tabasky; C. Armiento; A. Bellows; V. Cataldo; R. Morrison; M. Urban; R. Sargent; A. Negri; P. Haugsjaa

1993-01-01

410

Fabrication of perforated micro/nanopore membranes via a combination of nanoimprint lithography and pressed self-perfection process for size reduction.  

PubMed

Artificial membranes with perforated nanopores in defined locations provide an important biomimicking platform for sensing and analysis of biomolecules. This study presents a simple and flexible method to fabricate a freestanding polymer membrane with perforated micro- and nanopores using a combination of nanoimprint lithography (NIL) and pressed self-perfection (PSP) process. NIL was used to define initial pores of a few micrometers in diameter in the SU-8 membrane layer, which was followed by the PSP process where the patterned SU-8 membrane is pressed with a blank silicon wafer at an elevated temperature. This PSP process results in a lateral flow of the SU-8 resist and consequently reduces the pore size in the membrane. With this method, we have demonstrated fabrication of a SU-8 membrane with perforated pores down to approximately 300 nm in diameter. The results indicate that by employing a pore reduction process nanopore membranes can be manufactured without requirements of having a stamp with nanoscale structures and high aspect ratio imprinting with the stamp. PMID:23862460

Choi, Junseo; Farshchian, Bahador; Kim, Jinsoo; Park, Sunggook

2013-06-01

411

Die Absorptionsspektren von Vanadium, Titan und Scandium  

Microsoft Academic Search

Zusammenfassung Unter Benutzung eines elektrischen Ofens nach dem Muster der Öfen von A. King werden die Absorptionslinien der Dämpfe von Vanadium, Titan und Scandium bei 20000 C ermittelt. Die quantentheoretische Deutung dieser Ergebnisse gelingt unter Benutzung der bisher bekannten Gesetzmäßigkeiten in den Bogenspektren dieser Elemente, die einer kritischen Durchsicht unterzogen und insbesondere bei Titan durch Angabe neuer Multipletts vervollständigt werden.

H. Gieseler; W. Grotrian

1924-01-01

412

in die Forschung Mitteilungen der Universitt Bayreuth  

E-print Network

Schmidt, Leiter der Abteilung Sportmedizin und Sport- physiologie an der Universität Bayreuth, und seine für die Zeitschrift ,,Exercise and Sports Sciences Reviews" geben sie einen �berblick über die Ausdauertraining bis zum Doping ­ wie sich die maximale Sauerstoffaufnahme steigern lässt Grundsätzlich

Ullmann, G. Matthias

413

Contoured Orifice for Silicon-Ribbon Die  

NASA Technical Reports Server (NTRS)

Die configuration encourages purity and stable growth. Contour of die orifice changes near ribbon edges. As result, silicon ribbon has nearly constant width and little carbon contamination. Die part of furnace being developed to produce high-quality, low-cost material for solar cells.

Mackintosh, B. H.

1985-01-01

414

Die Euler-Mascheroni-Konstante Niloufar Rahi  

E-print Network

Die Euler-Mascheroni-Konstante Niloufar Rahi Ausarbeitung zum Vortrag in �berraschungen und, die nach dem Mathe- matiker Leonhard Euler benannt ist: die Euler-Mascheroni-Konstante 0, 5772156649, da man sie nirgends messen kann o.ä. Inhaltsverzeichnis 1 Einleitung 3 2 Herleitung der Euler-Mascheroni

Thäter, Gudrun

415

Die Welt des Herrn Kuhn  

NASA Astrophysics Data System (ADS)

Eines Morgens erwachte Herr Kuhn fröstelnd und staunte darüber, dass es in seinerWohnung eiskalt war. Dennoch quälte er sich aus seiner kuscheligen Bettdecke heraus und schlurfte ins Bad. "Hoffentlich wird wenigstens das Wasser warm", dachte er sich, als er den Wasserhahn betätigte - aber es kam nicht nur kein warmesWasser, außer einem unheilvollen Gluckser kam gar nichts aus der Leitung. "Dann werde ich wohl mal den Klempner anrufen", sprach er sich leise in den Bart und griff zu seinem Handy - doch das Netz war tot! Herr Kuhn begann nun, sich ernsthaft Sorgen zu machen, "Oje, was ist denn heute nur los? Ist irgendetwas Schlimmes passiert?" Um einen besseren Überblick über die Lage zu bekommen und sich austauschen zu können, brannte er nun förmlich darauf, rauszugehen und zur Arbeit zu fahren. An anderen Tagen, die er frisch geduscht und mit Kaffee und Marmeladen-Brot begann, war er selten so motiviert. So ging er also nun mit leerem Magen aus dem Haus. Hätte er den Versuch unternommen, sein tägliches Marmeladenbrot zuzubereiten, und dafür den Kühlschrank geöffnet, um das Marmeladenglas herauszunehmen, wäre ihm aufgefallen, dass auch die Stromversorgung Störungen unterworfen war, unschön zu erkennen an den ersten grünen, felligen Inseln auf seinem Lieblingskäse.

Kern, Daniela

416

Letting die and mercy killing.  

PubMed

We are all called to make moral decisions, not only about preserving life and health, but also about accepting our death and dying. There are situations, when it is morally right, and indeed obligatory, to allow a dying person to die in peace and dignity. But there is a world of difference between allowing a peaceful death, and deliberately setting out to bring death of the person either by acts of commission (s.c. 'active euthanasia'), or by acts of omission (s.c. 'passive euthanasia'). The word "killing" seems proper for euthanasia, because "to kill" does mean " to intentionally cause the death of someone." It can be morally acceptable to withhold or withdraw a treatment precisely because it is reasonably judged as inefficacious (futile), or excessively burdensome for the patient. One's reason for withholding such treatment must not be a judgement about the desirability of putting an end to the patient's life, but a judgement about the desirability of putting an end to the treatment, which is futile or burdensome. PMID:16294443

Narbekovas, Andrius; Meilius, Kazimieras

2003-01-01

417

Die \\  

Microsoft Academic Search

Zusammenfassung Operationsziel Korrektur einer symptomatischen Hallux-valgus-Deformität. Indikationen Im Schuh hinderliche Hallux-valgus-Deformitäten, bei denen eine laterale Verschiebung des Caput ossis metatarsalis I um bis zu zwei Drittel seiner Breite eine ausreichende Korrektur des Intermetatarsalwinkels I-II und damit der Deformität ergeben kann. Kontraindikationen Hypermobilität des ersten Strahls. Osteoporose. Arthrose des Metatarsophalangealgelenks I. Operationstechnik Mediale Längsinzision über dem Metatarsophalangealgelenk I bis zur Mitte

Pascal Rippstein; Tiziano Zünd

2001-01-01

418

Multi-channel digital correlator and hardware simulator for fluorescence correlation spectroscopy, dynamic light scattering and multichannel photon time stamping  

NASA Astrophysics Data System (ADS)

In fluorescence correlation spectroscopy and dynamic light scattering, digital correlators acquire the autocorrelation function of detected photons to measure diffusional dynamics of biomolecules and small particles. Multi-channel data from different wavelengths or scattering angles provides increased information for resolving multiple species. Similarly, in single-molecule spectroscopy and in experiments on photon entanglement, there is a need to acquire time stamps of photons from multiple detectors. To enable such advances, we have developed a cost-effective 16-channel correlator, and also a hardware simulator for a 16-channel photon detector for testing digital correlators, each based on a National Instruments R-series reconfigurable digital i/o card. The correlator scans 16 digital inputs each 6.25 ns for photon detector pulses and sends the photon time stamp and channel data to the host PC via a FIFO and 3 DMA channels, allowing >10^7 counts/s among the 16 channels. The PC calculates all autocorrelation and cross-correlations for logarithmically spaced delays in a real-time algorithm. The hardware simulator works in reverse: Simulated time stamp and channel data are sent by DMA to the card, which generates TTL pulses for the 16 digital outputs as though they came from 16 real photon detectors.

Lescano, Isaac; Davis, Lloyd

2007-11-01

419

Fabrication of nano- and micro-scale UV imprint stamp using diamond-like carbon coating technology.  

PubMed

Two-dimensional (2-D) and three-dimensional (3-D) diamond-like carbon (DLC) stamps for ultraviolet nanoimprint lithography were fabricated with two methods: namely, a DLC coating process, followed by focused ion beam lithography; and two-photon polymerization patterning, followed by nanoscale-thick DLC coating. We used focused ion beam lithography to fabricate 70 nm deep lines with a width of 100 nm, as well as 70 nm deep lines with a width of 150 nm, on 100 nm thick DLC layers coated on quartz substrates. We also used two-photon polymerization patterning and a DLC coating process to successfully fabricate 200 nm wide lines, as well as 3-D rings with a diameter of 1.35 microm and a height of 1.97 microm, and a 3-D cone with a bottom diameter of 2.88 microm and a height of 1.97 microm. The wafers were successfully printed on an UV-NIL using the DLC stamps without an anti-adhesive layer. The correlation between the dimensions of the stamp's features and the corresponding imprinted features was excellent. PMID:17252823

Lee, Eung-Sug; Jeong, Jun-Ho; Kim, Ki-Don; Sim, Young-Suk; Choi, Dae-Geun; Choi, Junhyuk; Park, Sang-Hu; Lim, Tae-Woo; Yang, Dong-Yol; Cha, Nam-Goo; Park, Jin-Goo; Lee, Wi-Ro

2006-11-01

420

Investigation of the Phase Formation of AlSi-Coatings for Hot Stamping of Boron Alloyed Steel  

NASA Astrophysics Data System (ADS)

Hot stamping of boron alloyed steel is gaining more and more importance for the production of high strength automotive body parts. Within hot stamping of quenchenable steels the blank is heated up to austenitization temperature, transferred to the tool, formed rapidly and quenched in the cooled tool. To avoid scale formation during the heating process of the blank, the sheet metal can be coated with an aluminium-silicum alloy. The meltimg temperature of this coating is below the austenitization temperature of the base material. This means, that a diffusion process between base material and coating has to take place during heating, leading to a higher melting temperature of the coating. In conventional heating devices, like roller hearth furnaces, the diffusion process is reached by relatively low heating rates. New technologies, like induction heating, reach very high heating rates and offer great potentials for the application in hot stamping. Till now it is not proofed, that this technology can be used with aluminum-silicon coated materials. This paper will present the results of comparative heating tests with a conventional furnace and an induction heating device. For different time/temperature-conditions the phase formation within the coating will be described.

Veit, R.; Hofmann, H.; Kolleck, R.; Sikora, S.

2011-01-01

421

Properties of Highly-Dense Iron?Base Powder Metallurgy Materials Pressed without Zinc Stearate  

Microsoft Academic Search

The possibility of obtaining highly-dense compacts by single pressing and sintering and the use of heat-resistant solid lubricants (graphite, talc) instead of conventional lubricant was studied. It was shown that the addition of graphite is most effective to obtain highly-dense powder metallurgy materials since it substantially facilitates ejection of the part from the die and improves the mechanical properties.

Arif T. Mamedov; V. A. Mamedov

2003-01-01

422

The Hot-Pressing of Hafnium Carbide (Melting Point, 7030 F)  

NASA Technical Reports Server (NTRS)

An investigation was undertaken to determine the effects of the hot-pressing variables (temperature, pressure, and time) on the density and grain size of hafnium carbide disks. The purpose was to provide information necessary for the production of high-density test shapes for the determination of physical and mechanical properties. Hot-pressing of -325 mesh hafnium carbide powder was accomplished with a hydraulic press and an inductively heated graphite die assembly. The ranges investigated for each variable were as follows: temperature, 3500 to 4870 F; pressure, 1000 to 6030 pounds per square inch; and time, 5 to 60 minutes. Hafnium carbide bodies of approximately 98 percent theoretical density can be produced under the following minimal conditions: 4230 F, 3500 pounds per square inch, and 15 minutes. Further increases in temperature and time resulted only in greater grain size.

Sanders, William A.; Grisaffe, Salvatore J.

1960-01-01

423

"Flypaper technique" a modified expansion method for preparation of postage stamp autografts.  

PubMed

The gold standard for management of extensive burn has been early excision, temporary allografting and final autografting. However, "lack of donor skin" is a challenge condition when autografting in the treatment of extensive burns. Designing an efficient and easy to apply expansion method may improve burn care quality and shorten the hospital stay period. From December 1998 to May 2004, we have performed fly paper technique postage stamp skin autografting for eight major burn patients in the Kaohsiung Medical University Hospital. By using a quick cutting plate, chessboard tray and petrolatum gauze, the skin islands can be uniformly located and correctly oriented on gauze. Then, the gauze with skin islands was grafted on to the wound. The wound healing time depends on the size of skin islands and expansion ratio. This method allows true expansion ratio up to nine times. The average wound healing times are 27.2 days for six times expansion and 34 days for nine times expansion. However, the burn scar needs further compression therapy to improve the cosmetic result. In comparison with the mesh technique, the skin islands are independent of each other, any dislodgement of a skin island will not interfere with the surrounding skin squares. When compared with the modified Meek technique, this method also offers rapid wound reepithilization but with lower cost. This flypaper technique is worthy of consideration in dealing with the extensive burns. PMID:15955633

Lee, Su-Shin; Lin, Tsai-Ming; Chen, Yi-Hui; Lin, Sin-Daw; Lai, Chung-Sheng

2005-09-01

424

"Shift to right flypaper technique" a refined method for postage stamp autografting preparation.  

PubMed

"Lack of donor skin" is a challenge condition for autografting in the treatment of extensive burns. The modified Meek technique seems to be a practical solution for this problem. However, the equipment and consumed materials for the modified Meek technique are expensive which limits routine use. Designing a less expensive, efficient and easy to apply expansion method may improve burn care quality and shorten hospital stay period. Our previous study reported the "flypaper technique" for preparation of postage stamp autografting. The time for confluence of the burned wound depends on the size of the skin islands and expansion ratio. In clinical practice, 5mm skin squares is the preferred size of the skin islands; however, the positioning procedure can be modified to improve the wound healing process. According to the chessboard diagram, the "shift to right" positioning technique shortens the 10% biggest distance in six times expansion diagrams and 20% biggest distance in nine times expansion diagrams. By using a quick cutting plate, chessboard tray and petrolatum gauze, the skin islands can be uniformly located and correctly oriented on the gauze. This method allows a true expansion ratio up to nine times. In comparison with the modified Meek technique, this method also offers rapid wound reepithilization but with lower cost. However, the burn scar needs further rehabilitation and compression therapy to improve the functional and cosmetic result. This "shift to right flypaper technique" is worthy of consideration in dealing with extensive burns. PMID:17524561

Lee, Su-Shin; Chen, Yi-Hui; Sun, I-Feng; Chen, Meng-Chum; Lin, Sin-Daw; Lai, Cheng-Sheng

2007-09-01

425

Stamping High-Aspect-Ratio Plasmonic Nanoarrays on SERS-Supporting Platforms  

SciTech Connect

The dielectric property of a nanoparticle-supporting film has recently garnered attention in the fabrication of plasmonic surfaces. A few studies have shown that localized surface plasmon resonance (LSPR), and hence SERS, strongly depends on substrate refractive index. In order to create higher efficiency SERS-active surfaces, it is therefore necessary to consider substrate property along with nanoparticle morphology. However, due to certain limitations of conventional lithography, it is often not feasible to create well-defined plasmonic nanoarrays on a substrate of interest. Herein, an additive nanofabrication technique, nanotransfer printing (nTP), is implemented to integrate electron beam lithography (EBL) defined high-aspect-ratio nanofeatures on a variety of SERS-supporting surfaces. With the aid of suitable surface chemistries, a wide range of plasmonic particles were successfully integrated on surfaces of three physically and chemically distinct dielectric materials, viz Polydimethyl siloxane (PDMS), SU-8 photoresist, and glass surfaces, using silicon-based relief pillars. These nTP created metal nanoparticles strongly amplify Raman signal and complement the selection of suitable substrates for better SERS enhancement. Our experimental observations are also supported by the theoretical calculations. The implementation of nTP to stamp out metal nanoparticles on multitude conventional/unconventional substrates has novel applications in designing in-built plasmonic microanalytical devices for SERS sensing and other related photonic studies.

Bhandari, Deepak [ORNL; Wells, Sabrina M [ORNL; Polemi, Alessia [Drexel University; Kravchenko, Ivan I [ORNL; Shuford, Kevin L [ORNL; Sepaniak, Michael J [ORNL

2011-01-01

426

Hydrogeology and Physical Characteristics of Water Samples at the Red River Aluminum Site, Stamps, Arkansas  

NASA Astrophysics Data System (ADS)

The Red River Aluminum site near Stamps, Arkansas, contains waste piles of salt cake and metal byproducts from the smelting of aluminum. The waste piles are subjected to about 50 inches of rainfall a year, resulting in the dissolution of the salts and metal. To assess the potential threat to underlying ground-water resources at the site, its hydrogeology was characterized by measuring water levels and field parameters of water quality in 23 wells and at 2 surface-water sites. Seventeen of these monitor wells were constructed at various depths for this study to allow for the separate characterization of the shallow and deep ground-water systems, the calculation of vertical gradients, and the collection of water samples at different depths within the flow system. Lithologic descriptions from drill-hole cuttings and geophysical logs indicate the presence of interbedded sands, gravels, silts, and clays to depths of 65 feet. The regionally important Sparta aquifer underlies the site. Water levels in shallow wells indicate radial flow away from the salt-cake pile located near the center of the site. Flow in the deep system is to the west and southwest toward Bodcau Creek. Water-level data from eight piezometer nests indicate a downward hydraulic gradient from the shallow to deep systems across the site. Values of specific conductance (an indicator of dissolved salts) ranged from 215 to 196,200 microsiemens per centimeter and indicate that saline waters are being transported horizontally and vertically downward away from the site.

Czarnecki, J. B.; Stanton, G. P.; Freiwald, D. A.

2001-12-01

427

Anisotropic and Mechanical Behavior of 22MnB5 in Hot Stamping Operations  

NASA Astrophysics Data System (ADS)

The hot stamping of quenchable High Strength Steels offers the possibility of weight reduction in structural components maintaining the safety requirements together with enhanced accuracy and formability of sheets. The proper design of this technology requires a deep understanding of material behavior during the entire process chain, in terms of microstructural evolution and mechanical properties at elevated temperatures, in order to perform reliable FE simulations and obtain the desired characteristic on final parts. In particular, the analysis of technical-scientific literature shows that accurate data on material rheological behavior are difficult to find; while the lack of knowledge about anisotropic behavior at elevated temperatures is even more evident. To overcome these difficulties, a new experimental set-up was developed to reproduce the thermo-mechanical conditions of the industrial process and evaluate the influence of temperature and strain rate on 22MnB5 flow curves through uniaxial tensile tests; an optical strain measurement system was utilized to evaluate the effective strain after necking. From the same data, plastic anisotropy evolution was determined by means of a specially developed procedure. The influence of different cooling rates was taken into account and the rheological properties were correlated with microstructural changes occurring during deformation, previously evaluated through a dilatometric analysis performed in the same range of temperatures.

Turetta, A.; Bruschi, S.; Ghiotti, A.

2007-04-01

428

Friction Stir Spot Welding of DP780 and Hot-Stamp Boron Steels  

SciTech Connect

Friction stir spot welds were made in two high-strength steels: DP780, and a hot-stamp-boron steel with tensile strength of 1500 MPa. The spot welds were made at either 800 or 1600 rpm using either of two polycrystalline boron nitride tools. One stir tool, BN77, had the relatively common pin-tool shape. The second tool, BN46, had a convex rather than a concave shoulder profile and a much wider and shorter pin. The tools were plunged to preprogrammed depths either at a continuous rate (1-step schedule) or in two segments consisting of a relatively high rate followed by a slower rate. In all cases, the welds were completed in 4s. The range of lap-shear values were compared to values required for resistance spot welds on the same steels. The minimum value of 10.3 kN was exceeded for friction stir spot welding of DP780 using a 2-step schedule and either the BN77- or the BN46-type stir tool. The respective minimum value of 12 kN was also exceeded for the HSB steel using the 2-step process and the BN46 stir tool.

Santella, Michael L [ORNL; Frederick, David Alan [ORNL; Hovanski, Yuri [ORNL; Grant, Glenn J [ORNL

2008-01-01

429

Friction Stir Spot Welding of DP780 and Hot-Stamp Boron Steels  

SciTech Connect

Friction stir spot welds were made in two high-strength steels: DP780, and a hot-stamp-boron steel with tensile strength of 1500 MPa. The spot welds were made at either 800 or 1600 rpm using either of two polycrystalline boron nitride tools. One stir tool, BN77, had the relatively common pin-tool shape. The second tool, BN46, had a convex rather than a concave shoulder profile and a much wider and shorter pin. The tools were plunged to preprogrammed depths either at a continuous rate (1-step schedule) or in two segments consisting of a relatively high rate followed by a slower rate. In all cases, the welds were completed in 4s. The range of lap-shear values were compared to values required for resistance spot welds on the same steels. The minimum value of 10.3 kN was exceeded for friction stir spot welding of DP780 using a 2-step schedule and either the BN77- or the BN46-type stir tool. The respective minimum value of 12 kN was also exceeded for the HSB steel using the 2-step process and the BN46 stir tool.

Santella, Michael L.; Frederick, Alan; Hovanski, Yuri; Grant, Glenn J.

2008-05-16

430

Measurement, time-stamping, and analysis of electrodermal activity in fMRI  

NASA Astrophysics Data System (ADS)

A low cost fMRI-compatible system was developed for detecting electrodermal activity without inducing image artifact. Subject electrodermal activity was measured on the plantar surface of the foot using a standard recording circuit. Filtered analog skin conductance responses (SCR) were recorded with a general purpose, time-stamping data acquisition system. A conditioning paradigm involving painful thermal stimulation was used to demonstrate SCR detection and investigate neural correlates of conditioned autonomic activity. 128x128 pixel EPI-BOLD images were acquired with a GE 1.5T Signa scanner. Image analysis was performed using voxel-wise multiple linear regression. The covariate of interest was generated by convolving stimulus event onset with a standard hemodynamic response function. The function was time-shifted to determine optimal activation. Significance was tested using the t-statistic. Image quality was unaffected by the device, and conditioned and unconditioned SCRs were successfully detected. Conditioned SCRs correlated significantly with activity in the right anterior insular cortex. The effect was more robust when responses were scaled by SCR amplitude. The ability to measure and time register SCRs during fMRI acquisition enables studies of cognitive processes marked by autonomic activity, including those involving decision-making, pain, emotion, and addiction.

Smyser, Christopher; Grabowski, Thomas J.; Rainville, Pierre; Bechara, Antione; Razavi, Mehrdad; Mehta, Sonya; Eaton, Brent L.; Bolinger, Lizann

2002-04-01

431

Anisotropic and Mechanical Behavior of 22MnB5 in Hot Stamping Operations  

SciTech Connect

The hot stamping of quenchable High Strength Steels offers the possibility of weight reduction in structural components maintaining the safety requirements together with enhanced accuracy and formability of sheets. The proper design of this technology requires a deep understanding of material behavior during the entire process chain, in terms of microstructural evolution and mechanical properties at elevated temperatures, in order to perform reliable FE simulations and obtain the desired characteristic on final parts. In particular, the analysis of technical-scientific literature shows that accurate data on material rheological behavior are difficult to find; while the lack of knowledge about anisotropic behavior at elevated temperatures is even more evident. To overcome these difficulties, a new experimental set-up was developed to reproduce the thermo-mechanical conditions of the industrial process and evaluate the influence of temperature and strain rate on 22MnB5 flow curves through uniaxial tensile tests; an optical strain measurement system was utilized to evaluate the effective strain after necking. From the same data, plastic anisotropy evolution was determined by means of a specially developed procedure. The influence of different cooling rates was taken into account and the rheological properties were correlated with microstructural changes occurring during deformation, previously evaluated through a dilatometric analysis performed in the same range of temperatures.

Turetta, A.; Ghiotti, A. [DIMEG, University of Padova, Via Venezia 1, 35131, Padova (Italy); Bruschi, S. [DIMS, University of Trento, Via Mesiano 77, 38050, Trento (Italy)

2007-04-07

432

Laser-Assisted Sheet Metal Working by the Integration of Scanner System Technology into a Progressive Die  

NASA Astrophysics Data System (ADS)

Within the sheet metal working industry the demand for thinner sheet materials with very high strength is growing due to the increasing importance for saving energy and responsible usage of natural resources. High strength and low ductility restrict application of state-of-the-art technology to shear, bend or deep draw parts with the needed complexity and quality. The Fraunhofer IPT has developed a "hy-PRESS" system to combine laser-assisted preheating and conventional punching to a hybrid technology in a progressive die, which allows to shear, bend and deep draw high strength materials with a high quality and complexity in progressive dies.

Brecher, Christian; Emonts, Michael; Eckert, Markus

433

Sigwalt und Sigridh Die Sonne sank blutrot in die See. Die Schlacht war  

E-print Network

kurzem der rasselnde Kampf getost. Der wunde König hatte die Augen geschlossen: nun schlug er sie auf das Leben schmerzt: ­ ­ zuweilen.« »Ich fürchte nichts für mich. Aber mein Knabe! We- nige Winter erst Halga-Björg. Meine Gesippen, meine Gefolgen liegen tot. Wer wird ihn schützen?« »Ich! Sein Pate! Der ihm

Prodinger, Helmut

434

Silver Buckle Press Collection  

NSDL National Science Digital Library

The University of Wisconsin's Digital Collections include everything from a tutorial in Icelandic to documents that tell the story of the Badger State's early settlement by Europeans. This particular collection brings together works by the Silver Buckle Press, which is a working museum of letterpress printing dedicated to preserving the craft of fine printing through educational programming, publications, exhibitions, and tours. The materials here include hard-to-find items from printing history, including "Hamilton's Wood Type" from 1901 and "The Nubian: a new fashion in types." This last work was created by the American Type Founders Company and it features "1928 Fashions in Type" with a focus on type faces that are "startling, eye-catching, attention-riveting and decidedly intriguing to the memory." There are over two dozen works in the collection, and visitors can search the complete text of all the items or just browse as they see fit. For students and lovers of graphic design, typography, advertising history, and related fields, this collection will be most enjoyable.

435

National Academy Press  

NSDL National Science Digital Library

Provided by the National Academy Press (NAP), the publishing arm of the National Academy of Science, National Academy of Engineering, Institute of Medicine, and the National Research Council (reviewed in the November 12, 1997 Scout Report for Science & Engineering), this outstanding resource will quickly become a favorite of scientists and researchers in a variety of fields. While there are numerous sites offering excerpts of new books and just as many containing the full text of out-of-copyright works, this site is unique in that it provides the full text of over 1000 recent, new, and even prepublication books from the NAP. The books are offered in several versions, including HTML, image format, and .pdf. Users may browse titles by subject or conduct a keyword search. Subjects include: Biology, Computer Sciences, Education, Mathematical Sciences and Statistics, Science and Ethics, and many others. Users can check the New Online page for the latest published and prepublication books added to the site or sign up for a free email notification service.

436

Influence of Temperature on AA6014 Alloy Tribological Behaviour in Stamping Operations  

SciTech Connect

The evaluation of the tribological characteristics at the metal blank-tool interface during sheet metal working operations is usually carried out by accurately reproducing the mechanical and kinematical parameters occurring during the real process. The high rate production characterizing the industrial processes can induce significant temperature increase in both the blank and the dies during deformation. With respect to this aspect, among the other process conditions, an accurate tribological characterization should take into account the influence of the temperature variations at the blank and the dies. In the present paper, a novel apparatus to investigate the tribological conditions during sheet metal working processes is presented. In addition to the control of mechanical (i.e. normal pressure) and kinematic parameters (i.e. sliding speed, sliding length), the developed testing machine permits to reproduce the thermal fields and monitor the thermal conditions of the sheet and tool materials. Experiments were carried out on aluminium alloy sheets between 20 deg. and 200thinsp; deg. C by using both coated and uncoated dies. It is proved that the temperature influences the tribological behaviour, especially when coated dies are utilized.

Sgarabotto, F.; Ghiotti, A. [University of Padua, via Venezia 1, 35131-I Padova (Italy); Bruschi, S. [University of Trento, via Mesiano 77, 38050 Trento (Italy)

2011-05-04

437

Sociology of Death and Dying  

NSDL National Science Digital Library

According to Professor Michael C. Kearl, Professor of Sociology and Anthropology at Trinity University, death is "the central dynamism underlying the life, vitality, and structure of the social order. . .[and] reveals the most central social processes and cultural values." To explain and explore the social and cultural implications of death, Kearl created this extensive guide to sociological thanatology. The guide consists of a series of hypertextual essays divided into nine major sections, including Death and the Social Order, Bids for Symbolic Immortality and Longevity, and How We Die. Throughout the site, numerous links to relevant thanatological resources are provided.

438

Never Say Die Issue 8  

E-print Network

Never Say Die 8 Contents FRONT COVER Leela Starsky BACK COVER Dianne Smith Most stories by Carolyn Golledge Editor ?s Note: ~ Since I amfinally getting towardthe last ofmy stock ofHan stories, I 've decided that in each issue I'll print a new... on track - and alive! In Close Proximity by Carolyn Golledge Art by Zawiah Handcuffed together, and on the runfrom the Imperials in a hostile wilderness, can Han and Leia survive? Welcome by Carolyn Golledge Art by Leela Starsky Han suffers terrible...

Golledge, Carolyn

2007-01-01

439

Evaluation of permanent die coatings to improve the wear resistance of die casting dies. Final project report, January 1, 1995--April 30, 1997  

SciTech Connect

Die Casting dies are subject to severe service conditions during the die casting operation. While these severe conditions are necessary to achieve high production rates, they cause the dies which are commonly made of H13 die steel, to suffer frequent failures. The major die failure mechanisms are erosion or washout, Heat checking, soldering and corrosion. Due to their geometrical complexity, die casting dies are very expensive (some dies cost over a million dollars), and thus a large number of parts have to be produced by a die, to justify this cost and leverage the advantages of the die casting process (high production rates, low manpower costs). A potential increase in the die service life, thus has a significant impact on the economics of the die; casting operation. There are many ways to extend die life: developing new wear resistant die materials, developing new surface treatments including coatings, improving heat treatment of existing H13 dies, using better lubricants that can protect the die material, or modifying the die geometry and process parameters to reduce the intensity of wear. Of these the use of coatings to improve the wear resistance of the die surface has shown a lot of promise. Consequently, use of coatings in the die casting industry and their wide use to decrease die wear can improve significantly the productivity of shop operations resulting in large savings in material and energy usage.

Shivpuri, R.

1997-09-18

440

Helium-hydrogen microplasma device (MPD) on postage-stamp-size plastic-quartz chips.  

PubMed

A new design of a miniaturized, atmospheric-pressure, low-power (e.g., battery-operated), self-igniting, planar-geometry microplasma device (MPD) for use with liquid microsamples is described. The inexpensive MPD was a hybrid, three-substrate quartz-plastic-plastic structure and it was formed on chips with area the size of a small postage stamp. The substrates were chosen for rapid prototyping and for speedy device-geometry testing and evaluation. The approximately 700-microm (diameter) and 7-mm (long) He-H(2) (3% H(2)) microplasma was formed by applying high-voltage ac between two needle electrodes. Operating conditions were found to be critical in sustaining stable microplasma on plastic substrates. Spectral interference from the electrode materials was not observed. A small-size, electrothermal vaporization system was used for introduction of microliter volumes of liquids into the MPD. The microplasma was operated from an inexpensive power supply. And, operation from a 14.4-V battery has been demonstrated. Microplasma background emission in the spectral range between 200 and 850 nm obtained using a portable, fiber-optic spectrometer is reported. Analyte emission from microliter volumes of dilute single-element standard solutions of Cd, Cu, K, Li, Mg, Mn, Na, Pb, and Zn is documented. Element-dependent precision was between 10-25% (the average was 15%) and detection limits ranged between 1.5 and 350 ng. The system was used for the determination of Na in diluted bottled-water samples. PMID:19609509

Weagant, Scott; Karanassios, Vassili

2009-10-01

441

Stamping colloidal photonic crystals: a facile way towards complex pixel colour patterns for sensing and displays  

NASA Astrophysics Data System (ADS)

Patterning of colloidal photonic crystals (CPCs) has been strongly investigated in recent years for sensing and image displays. Rather than using traditional template-directed approaches, here microimprint lithography along with convective self-assembly is applied to generate complex CPC patterns that can be adjusted to show single- or dual-colour patterns or composite CPC patterns possessing two different colours. These composite CPC patterns show different wettability with water because of the surface chemistry of the polymers and silica used. This dramatically transforms the structural colours upon liquid infiltration. By mixing different ethanol concentrations with water, the infiltration efficiency can be further improved and easily read out from changes in reflection intensity and spectral peak shifts. Integrating these nano-architectures into devices can thus yield function as image displays and as sensors for solvents.Patterning of colloidal photonic crystals (CPCs) has been strongly investigated in recent years for sensing and image displays. Rather than using traditional template-directed approaches, here microimprint lithography along with convective self-assembly is applied to generate complex CPC patterns that can be adjusted to show single- or dual-colour patterns or composite CPC patterns possessing two different colours. These composite CPC patterns show different wettability with water because of the surface chemistry of the polymers and silica used. This dramatically transforms the structural colours upon liquid infiltration. By mixing different ethanol concentrations with water, the infiltration efficiency can be further improved and easily read out from changes in reflection intensity and spectral peak shifts. Integrating these nano-architectures into devices can thus yield function as image displays and as sensors for solvents. Electronic supplementary information (ESI) available: SEM images of the stamps, optical image, reflection spectra, and table of peak wavelength and intensity. See DOI: 10.1039/c4nr05934d

Ding, Tao; Smoukov, Stoyan K.; Baumberg, Jeremy J.

2015-01-01

442

28 CFR 540.64 - Press pools.  

Code of Federal Regulations, 2013 CFR

...PERSONS IN THE COMMUNITY Contact With News Media § 540.64 Press pools...press pool, the Warden shall notify all news media representatives who have requested... (1) The national and international news services; (2) The television and...

2013-07-01

443

28 CFR 540.64 - Press pools.  

...PERSONS IN THE COMMUNITY Contact With News Media § 540.64 Press pools...press pool, the Warden shall notify all news media representatives who have requested... (1) The national and international news services; (2) The television and...

2014-07-01

444

28 CFR 540.64 - Press pools.  

Code of Federal Regulations, 2011 CFR

...PERSONS IN THE COMMUNITY Contact With News Media § 540.64 Press pools...press pool, the Warden shall notify all news media representatives who have requested... (1) The national and international news services; (2) The television and...

2011-07-01

445

28 CFR 540.64 - Press pools.  

Code of Federal Regulations, 2012 CFR

...PERSONS IN THE COMMUNITY Contact With News Media § 540.64 Press pools...press pool, the Warden shall notify all news media representatives who have requested... (1) The national and international news services; (2) The television and...

2012-07-01

446

The Princess and the Press  

NSDL National Science Digital Library

After the tragic death of Princess Diana recently, there was much controversy over the role of the press as an intrusive force that helped lead to her demise. PBS Frontline, in a companion site to a recent TV documentary on the relationship between the English press and monarchy, examines this controversy in detail. Interviews with thirteen journalists, including Andrew Morton, who wrote a controversial biography of the late Princess; a transcript of Diana's Interview with the BBC in 1995; selected tabloid pictures and headlines; and a timeline illustrating British royalty encounters with the press are featured. A transcript of the show will be available shortly. As always, Frontline tackles controversial issues, and while some users may not agree with the tone or conclusions of the show (and site), there is a gold mine of information on the topic here.

1997-01-01

447

Increasing the life of stamping tools of high-chromium tool steels  

SciTech Connect

The possibility of reducing the degree of carbide segregation in die steels by heat treatment was studied and optimization of the chemical analysis of the steels was evaluated in order to determine conditions for optimizing their service life as die steels. Investigations on determination of the rules of solution of type M/sub 7//C/sub 3/ carbide phase in Kh12Fl and Kh12M steels made it possible to establish the temperature time conditions for this process. To obtain a uniform carbide phase distribution and, as a result, an increase in the life of large tools the possibility of changing the composition of the steels was determined. To reduce carbide segregation the carbon content in the investigated steels was reduced and Y, Zr, and Nb were additionally added to their composition. The results of production tests and comparative increases in the service life of the steels are discussed.

Parshin, A.M.; Kirillov, N.B.

1988-05-01

448

An Efficient, Easily Constructed Cell Homogenizing Press  

PubMed Central

An easily constructed, highly efficient cell homogenizing press is described which should be available to laboratories at moderate cost. The press allows the preparation of homogenates from up to 20 g of packed cell paste in a single batch without danger of damage to the press. Cell breakage and recovery of cell homogenates is accomplished at temperatures which maintain the material in the frozen state. The press may be assembled, disassembled, and cleaned with minimal effort. Images FIG. 2 FIG. 3 PMID:14496011

Sagers, Richard D.

1962-01-01

449

IT-Planung – Die IT-Planung in die Unternehmensplanung integrieren  

Microsoft Academic Search

Die IT-Governance bildet den strukturellen Rahmen für eine effektive IT-Steuerung und damit für die Umsetzung einer wertorientierten\\u000a IT-Strategie. Innerhalb dieses Rahmens ist die IT-Planung der erste Schritt zur Realisierung der IT-Strategie. Wesentlicher\\u000a Erfolgsfaktor ist dabei die „richtige” Art und Weise der IT-Planung. „Richtig” ist die Planung immer dann, wenn einerseits\\u000a die in der IT-Strategie geplanten, wertsteigernden Maßnahmen sauber umgesetzt werden.

Dirk Buchta; Marcus Eul; Helmut Schulte-Croonenberg

450

The evaluation of springback in 3D stamping and coining processes  

Microsoft Academic Search

An effective predictive technique of the elastic springback in a fully 3D 90° V-punch V-die bending process is presented. This is based on a combined approach in which an explicit finite element code was used to simulate the loading phase of the process whilst an implicit procedure was used to analyse the springback phase. Two different punches with a nose

A. Forcellese; L. Fratini; F. Gabrielli; F. Micari

1998-01-01

451

How to write a press release  

NSDL National Science Digital Library

This project teaches Snow College students how to write a press release Writing a press release can be the most important skill an public releations pro cna master. Being able to write an effective press release will make you much more employable than your classmates and will help you land that big first job. Following the completion of this tutorial, students will be ...

Dart, Greg

2007-10-19

452

The Small Book Press: A Cultural Essential.  

ERIC Educational Resources Information Center

Discussion of small literary book publishers notes works of small-press authors (Thomas Paine, Washington Irving, Walt Whitman, Mark Twain, Upton Sinclair, Anais Nin); today's outstanding presses (Creative Arts Book Company, Persea Books, Full Court Press, Reed and Cannon Company, Tuumba Books); and role of little magazines. Thirty-seven…

Henderson, Bill

1984-01-01

453

Die Kommunikation des Menschen: Hören und Sprechen  

Microsoft Academic Search

Im 2. Lebensjahr von B.K. fällt ihren Eltern auf, dass sie keine Sprache entwickelt. Die Untersuchung beim Arzt zeigt, dass\\u000a keine otoakustischen Emissionen (akustische Ableitung aus dem Innenohr) und keine Hirnstammpotenziale (elektrische Ableitung\\u000a von der Hörbahn des Gehirns) akustisch auslösbar sind. Die weitere Diagnostik ergibt, dass B.K. gehörlos ist. Eine humangenetische\\u000a Untersuchung ergibt, dass bei B.K. das Gen für die

Hans-Peter Zenner

454

Euklid als Physiker: Die Realgeltung der Geometrie  

NASA Astrophysics Data System (ADS)

Es lässt sich beweisen, dass die Winkelsumme in einem ebenen, euklidischen Dreieck 180 Grad beträgt. Ebenso ergibt sich, dass die Winkelsumme in einem Dreieck auf einer Kugeloberfläche größer als 180 Grad ist. Auch der Satz des Pythagoras ist beweisbar. In allen Fällen beruhen die Beweise auf Euklids Parallelenaxiom. Das aber lässt sich nicht beweisen. Beweisbar aber ist, dass es in nicht-euklidischen Geomerien nicht gilt.

Genz, Henning

455

Brasiliens zivilgesellschaftliche Organisationen und die Regierung Lula  

Microsoft Academic Search

Schon theoretisch sind die Beziehungen zwischen Nichtregierungsorganisationen (NRO) und politischen Parteien kompliziert genug,\\u000a ja widersprüchlich - zielen Erstere doch auf die Vertretung sozialer, kultureller, umweit- und geschlechterbezogener Forderungen\\u000a ab, während Letztere auf die Schaffung von Wähler- und Parlamentsmehrheiten aus sind, was zwangsläufig auch Kompromisse mit\\u000a anderen Interessenträgern statt nur mit der eigenen sozialen Basis einschließt. In der Praxis können sich

Gilberto Calcagnotto

456

Study Program to Develop and Evaluate Die and Container Materials for the Growth of Silicon Ribbons  

NASA Technical Reports Server (NTRS)

The completion of a major hardware delivery milestone was accomplished with the delivery of three CNTD Si3N4 coated hot pressed Si3N4 crucibles. A limited characterization of the coating was performed at MRL prior to delivery. The coatings were fine grained alpha - Si3N4. It was determined that a two piece die design is required. The importance of the role of oxygen in influencing the attack of the CNTD materials by molten silicon was demonstrated. The stability is greatly enhanced by maintaining the oxygen partial pressure near or below the Si + O2 = SiO2 equilibrium.

Ounby, P. D.; Yu, B. B.; Barsoum, M. W.

1979-01-01

457

Note: Adhesive stamp electrodes using spider silk masks for electronic transport measurements of supra-micron sized samples  

NASA Astrophysics Data System (ADS)

A procedure for fabricating adhesive stamp electrodes based on gold coated adhesive tape used to measure electronic transport properties of supra-micron samples in the lateral range 10-100 ?m and thickness >1 ?m is described. The electrodes can be patterned with a ˜4 ?m separation by metal deposition through a mask using Nephila clavipes spider dragline silk fibers. Ohmic contact is made by adhesive lamination of a sample onto the patterned electrodes. The performance of the electrodes with temperature and magnetic field is demonstrated for the quasi-one-dimensional organic conductor (TMTSF)2PF6 and single crystal graphite, respectively.

Steven, E.; Jobiliong, E.; Eugenio, P. M.; Brooks, J. S.

2012-04-01

458

Printing of sub-20 nm wide graphene ribbon arrays using nanoimprinted graphite stamps and electrostatic force assisted bonding.  

PubMed

Nano-graphene ribbons are promising in many electronic applications, as their bandgaps can be opened by reducing the widths, e.g. below 20 nm. However, a high-throughput method to pattern large-area nano-graphene features is still not available. Here we report a fabrication method of sub-20 nm ribbons on graphite stamps by nanoimprint lithography and a transfer-printing of the graphene ribbons to a Si wafer using electrostatic force assisted bonding. These methods provide a path for fast and high-throughput nano-graphene device production. PMID:21975519

Wang, Chao; Morton, Keith J; Fu, Zengli; Li, Wen-Di; Chou, Stephen Y

2011-11-01

459

Lower Restrictions for Sheet Metal Trimming Processes can Reduce Die Costs in The Automotive Industry  

NASA Astrophysics Data System (ADS)

To reduce costs of trimming dies influencing parameters of the shearing process were identified, new technical approaches for a more cost efficient die design were developed, and comprehensive investigations on a sample tool were done. These approaches will be verified on a trimming die in series production. If this pilot application is successful, many sheet metal forming parts can be trimmed by less die investment in the future. In the automotive industry complex sheet metal forming parts are often trimmed by shearing. Ideally this shearing is done with a 90° angle between the cutting edge and the part surface. Because of complex part geometry different angles always occur. Often shearing angles and the effective sheet thickness increases so much that trimming in the working direction of the press machine is not possible anymore. In these cases sliding cams have to be used. That makes trimming dies expensive and maintenance intensive. For reliable trimming a good understanding of the process and its limitations is necessary. By not considering these limitations the tool can fail after a few operations or/and the resulting edge of the sheet metal part is no longer acceptable. In worst case a new tool has to be built or at least must be reworked. In operational practice so far only empirical values about limitations are known. The stability limit for trimming is not known for all shearing angles and for new high-strength materials. Therefore detailed investigations were done on a sample tool to determine these stability limits for different materials and shearing angles. The basis for starting these principle investigations was empirical values from operational practise. By using a high-quality material and a completely new shape for the trimming die elements both the reliable processable effective sheet thickness respectively the shearing angle as well as the acting forces could be optimized. In the basic investigations trimming in one direction was often still possible although from operational practice point of view the stability limit is already exceeded. These optimistic results are being validated in series production right now. The sheet metal car body parts consist of steel grades up to high-strength steel material. They are mostly completely trimmed in the working direction of the press. If these tests are successful, the results will be used in the design of future trimming dies. Less sliding cams are necessary and costs can be reduced.

Hogg, Markus; Rohleder, Martin; Roll, Karl

2011-05-01

460

Gifted Education Press Quarterly, 1995.  

ERIC Educational Resources Information Center

This document consists of the four issues of the newsletter "Gifted Education Press Quarterly" published during 1995. This newsletter addresses issues in the education of gifted children and youth. The major articles are: (1) "Using Today's Technology: Parents Can Help Challenge Gifted Children" (Adrienne O'Neill); (2) "Outcomes-Based Education…

Fisher, Maurice D., Ed.

1995-01-01

461

ARTICLE IN PRESS Aerosol Science ( )  

E-print Network

ARTICLE IN PRESS Aerosol Science ( ) ­ www.elsevier.com/locate/jaerosci Langevin PDF simulation, for example thermal and nuclear systems, cyclone separators, spray cooling and which is also present.-P. Langevin PDF simulation of particle deposition in a turbulent pipe flow. Journal of Aerosol Science (2008

Chibbaro, Sergio

462

Neuroscience 2013 The MIT Press  

E-print Network

Neuroscience 2013 The MIT Press 30% Discount Offer (See details on order form) #12;NEW BORGES core fields of study, including artificial intelligence, linguistics, neuroscience, psychology information, please contact: cognet-info@mit.edu #12;1 neuroscience · Honorable Mention, 2010 PROSE Award

Jackson, Daniel

463

de Madagascar Dossier de presse  

E-print Network

Lémuriens de Madagascar Dossier de presse #12;Lémuriens de Madagascar -- 2 -- Les Publications scientifiques du Muséum & Conservation International présentent Lémuriens de Madagascar de Russell A, Lému- riens de Madagascar est publié par les Publica- tions scientifiques du Muséum national d

464

The Pindar Press London 2009  

E-print Network

The Pindar Press London 2009 Visible Spirit The Art of Gianlorenzo Bernini Vol. II Irving Lavin #12 and the Reverse of the Medal 1087 XXVIII The Young Bernini 1127 #12;XXIX `Bozzetto Style': The Renaissance' The Renaissance Sculptor's Handiwork* IT takes most people much time and effort to become proficient

465

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY  

E-print Network

PRESS RELEASE FROM TRANSLATIONAL PSYCHIATRY (http://www.nature.com/tp/) For papers Psychiatry Its use is granted only for journalists and news media receiving it directly from the Nature Psychiatry to be reproduced for the purposes of contemporaneous news reporting, you must also seek permission

Cai, Long

466

NATIONAL ACADEMY PRESS WEB SITE  

EPA Science Inventory

The National Academy Press is the publisher for the National Academy of Sciences, the National Academy of Engineering, the Institute of Medicine, and the National Research Council. Through this web site, you have access to a virtual treasure trove of books, reports and publicatio...

467

ARTICLE IN PRESS Pattern Recognition ( )  

E-print Network

ARTICLE IN PRESS Pattern Recognition ( ) ­ www.elsevier.com/locate/patcog The method of N-grams on the comparison of vocabularies of N-grams. In contrast to the regular N-grams approach, the proposed N-grams method is based on calculation of imperfect occurrences of N-grams in a text up to a number of mismatched

Kirzhner Valery

468

CSR Press Release Submitted by  

E-print Network

commit to buy yogurt from cows not treated with rBGH Compass Group, North America Health & Wellness, FairCSR Press Release Submitted by: Categories: Posted: Another Victory for the Sustainable Food 'Moo-vement' In their efforts to serve healthier, more sustainable food, Bon Appetit Management Company and Compass Group USA

469

MAX PLANCK SOCIETY Press Release  

E-print Network

MAX PLANCK SOCIETY Press Release SP / 2004 (1) January 15th, 2004 Max Planck Society at the American Astronomical Society meeting in Atlanta, Georgia. Dr. Eric F. Bell of the Max-Planck consortium and led by Dr. Hans-Walter Rix, Director of the Max-Planck-Institute for Astronomy, said the image

470

Book Editors IOS Press, 2003  

E-print Network

Book Title Book Editors IOS Press, 2003 1 Hybrid Analysis of a Spherical Mechanism for a Minimally reward good kinematic performance, and dynamic performance metrics, which penalize poor dynamic performance. Kinematic and dynamic metrics are considered indepen- dently, and then combined to produce hybrid

471

Contact Information: Governor's Press Office  

E-print Network

Technology of Red Bank, New Jersey will expand its footprint and add 27 new jobs as part of an expansion growth to a facilitator of new business and private sector job development." Natcore's home, Eastman: 518.474.8418 press.office@exec.ny.gov Andrew M. Cuomo ­ Governor Governor Cuomo Announces New Jobs

Richards-Kortum, Rebecca

472

Mars Observer Press Conference JPL  

NASA Astrophysics Data System (ADS)

The Mars Observer mission spacecraft was primarily designed for exploring Mars and the Martian environment. The Mars Observer was launched on September 25, 1992. The spacecraft was lost in the vicinity of Mars on August 21, 1993 when the spacecraft began its maneuvering sequence for Martian orbital insertion. This videotape shows a press briefing, held after the spacecraft had not responded to attempts to communicate with it, to explain to the press the problems and the steps that were being taken to re-establish communication with the spacecraft. The communications had been shutdown prior to the orbital insertion burn to protect the instruments. At the time of the press conference, the communications system was still not operational, and attempts were being made to re-establish communication. Bob McMillan of the Public Affairs Office at JPL gives the initial announcement of the continuing communication problem with the spacecraft. Mr. McMillan introduces William Piotrowski, acting director of solar system exploration, who reiterates that there is indeed no communication with the Observer spacecraft. He is followed by Glenn Cunningham, the Project Manager of the Mars Observer who speaks about the attempts to re-establish contact. Mr. Cunningham is followed by Satenios Dallas, the Mission Manager for the Mars Observer Project, who speaks about the sequence of events leading up to the communication failure, and shows an animated video presenting the orbital insertion maneuvers. The briefing was then opened up for questions from the assembled press, both at JPL and at the other NASA Centers. The questions are about the possible reasons for the communication failure, and the attempts to restore communications with the spacecraft. Dr. Arden L. Albee, chief scientist for the Mars Observer Mission, joins the other panel members to answer questions. At the end of the press briefing the animation of the Mars orbital insertion is shown again.

1993-08-01

473

Mars Observer Press Conference JPL  

NASA Technical Reports Server (NTRS)

The Mars Observer mission spacecraft was primarily designed for exploring Mars and the Martian environment. The Mars Observer was launched on September 25, 1992. The spacecraft was lost in the vicinity of Mars on August 21, 1993 when the spacecraft began its maneuvering sequence for Martian orbital insertion. This videotape shows a press briefing, held after the spacecraft had not responded to attempts to communicate with it, to explain to the press the problems and the steps that were being taken to re-establish communication with the spacecraft. The communications had been shutdown prior to the orbital insertion burn to protect the instruments. At the time of the press conference, the communications system was still not operational, and attempts were being made to re-establish communication. Bob McMillan of the Public Affairs Office at JPL gives the initial announcement of the continuing communication problem with the spacecraft. Mr. McMillan introduces William Piotrowski, acting director of solar system exploration, who reiterates that there is indeed no communication with the Observer spacecraft. He is followed by Glenn Cunningham, the Project Manager of the Mars Observer who speaks about the attempts to re-establish contact. Mr. Cunningham is followed by Satenios Dallas, the Mission Manager for the Mars Observer Project, who speaks about the sequence of events leading up to the communication failure, and shows an animated video presenting the orbital insertion maneuvers. The briefing was then opened up for questions from the assembled press, both at JPL and at the other NASA Centers. The questions are about the possible reasons for the communication failure, and the attempts to restore communications with the spacecraft. Dr. Arden L. Albee, chief scientist for the Mars Observer Mission, joins the other panel members to answer questions. At the end of the press briefing the animation of the Mars orbital insertion is shown again.

1993-01-01

474

Die Typenbestimmung von Brucellen und ihre Bedeutung fÜr die Systematik des Genus Brucella  

Microsoft Academic Search

Zusammenfassung Durch die Untersuchung der Farbstoffresistenz, der Schwefelwasserstoffbildung, der Ureaseaktivität, des Verhaltens gegenÜber DEDTC und der Agglutinabilität in monospezifischen Seren wurde die Typenzugehörigkeit von 164 Brucellastämmen untersucht. Neben den Typen abortus, melitensis und suis kommen Stämme vor, die weder dem einen noch dem anderen Typ eindeutig zugeordnet werden können und als Übergangsformen zwischen den klassischen Brucellatypen stehen. In Anbetracht der

Wilhelm Wundt

1958-01-01

475

Brasilien und die Amerikas: Lateinamerika und die USA als Bezugspunkte der brasilianischen Außenpolitik  

Microsoft Academic Search

1. Einleitung Jede Außenpolitik basiert auf Selbst- und Fremdbildern, d.h. auf Vor- stellungen von der eigenen Identität und dem Platz, den das eigene Land in der Welt einnimmt (oder einnehmen sollte), aber auch auf Bildern, die sich die außenpolitischen Entscheidungsträger von den Nachbarländern und vom Zustand des internationalen Systems insge- samt machen. Die der brasilianischen Außenpolitik zu Grunde liegen- den

Peter Birle

476

Prediction of Part Distortion in Die Casting  

SciTech Connect

The die casting process is one of the net shape manufacturing techniques and is widely used to produce high production castings with tight tolerances for many industries. An understanding of the stress distribution and the deformation pattern of parts produced by die casting will result in less deviation from the part design specification, a better die design and eventually more productivity and cost savings. This report presents methods that can be used to simulate the die casting process in order to predict the deformation and stresses in the produced part and assesses the degree to which distortion modeling is practical for die casting at the current time. A coupled thermal-mechanical finite elements model was used to simulate the die casting process. The simulation models the effect of thermal and mechanical interaction between the casting and the die. It also includes the temperature dependant material properties of the casting. Based on a designed experiment, a sensitivity analysis was conducted on the model to investigate the effect of key factors. These factors include the casting material model, material properties and thermal interaction between casting and dies. To verify the casting distortion predictions, it was compared against the measured dimensions of produced parts. The comparison included dimensions along and across the parting plane and the flatness of one surface.

R. Allen Miller

2005-03-30

477

Mitteilung fr die Medien Mitteilung fr die Medien Mitteilung fr die Medien Mitteilung fr die Medien Eine Zeile mit 39 Anschlgen (mit Leerzeichen) durchschnittlich  

E-print Network

allem die Metho- de des Augmented Reality (AR) ein- schlie�en. Diese Technik wurde bereits in zwei-Institut speziell entwickelte audiovisuelle Brille (,,Augmented Reality") zum Einsatz, die dem Auge wichtige Lern naturwissenschaftlicher Fä- cher mit Hilfe zusätzlicher Technolo- gien (im konkreten Fall Augmented Reality) weitere

Ullmann, G. Matthias

478

II. Geometrie. 4. Antike: Die Euklidische Mathematik.  

E-print Network

, Gespr¨ache in Tusculum,Artemis u. Winkler, S. 9] 1. Der Satz von Pythagoras. Neben der Zahlenlehre haben sich die Pythagor¨aer auch mit Geometrie besch¨aftigt. Schlie�lich ist ja der Satz von Pythagoras eng mit ihrem Namen verbunden. Der Satz des Pythagoras besagt, dass die Summe der Quadrate der Katheten

Johannson, Klaus

479

Ueber die Herkunft einiger nitrophiler unkräuter Mitteleuropas  

Microsoft Academic Search

Die aus Mitteleuropa bekannten und hier grossfl~ichig verbreiteten nitrophilen Unkrautgesellschaften sind zum iiberwiegenden Teil anthropogen bedingt und verdanken ihre Entstehung und Erhaltung der menschlichen, namentlich der biiuerlichen Wirtschaft. Mit Recht weist abet NORDHAGEN (1939\\/40) in seiner aufschlussreichen Arbeit iiber ,~die Pflanzengesellschaften der Tangw.'~lle\\

Wilhelm Lohmeyer

1954-01-01

480

Die ausgewhlten Wissenschaftler (1850-1918)  

E-print Network

. Er ist bekannt für die �bersetzung und die schnelle Verbreitung der Werke von Galileo GALILEI, unter Galilei nahe Jean-Henri Lambert (1728-1777) Mathematiker, Physiker und Philosoph, geboren in Mülhausen: Matthias BERNEGGER (1582-1640). Professor an der Universität Stra�burg, Zeitgenosse und Freund von GALILEI

Hanke-Bourgeois, Martin

481

Student Nurses' Perception of Death and Dying  

ERIC Educational Resources Information Center

Student nurses are involved in caring for patients who are actively dying or who have been told they have a terminal illness and are faced with the process of dying. Students encounter these patients in hospitals, nursing homes, at home or in hospice care settings. According to Robinson (2004), "nurses are the healthcare providers that are most…

Niederriter, Joan E.

2009-01-01

482

Über die Reißfestigkeit der Haut verschiedener Körperregionen  

Microsoft Academic Search

Verfasser haben die Reißfestigkeit der Haut verschiedener Körperstellen (behaarte Kopfhaut, vordere Halspartie, mittlere vordere Brustkorbhaut, Herzgegend, Bauch-, Rücken-, Gesäß-, Ober- und Unterarmsowie Unterschenkelhaut) von insgesamt 121 (71 männlichen und 50 weiblichen) Leichen, die binnen 6–72 Std zur Obduktion gelangt waren, mit Hilfe einer elektrischen, automatisch registrierenden Zerreißmaschine untersucht.

I. Gy. Fazekas; F. Kósa; A. Basch

1968-01-01

483

Euthanasia: Why people want to die earlier  

Microsoft Academic Search

The results from two surveys in England of relatives and others who knew people in samples drawn from death certificates are reported. The main focus is on a sample of 3696 people dying in 1990 in 20 health authorities, with supporting analysis from an earlier national sample of 639 people dying in 1987. The incidence of people saying they wanted

Clive Seale; Julia Addington-Hall

1994-01-01

484

Die Flügelbefiederung des Bleßhuhns (Fulica atra L.)  

Microsoft Academic Search

Zusammenfassung Es werden die Anordnung und das Aussehen der Konturfedern am Flügel des Bleßhuhns (Fulica a. atra L.) beschrieben und erörtert. Die Verhältnisse beiFulica a. australis, F. americana undF. cristata stimmen damit überein. Zum Vergleich wurden nochCrex crex, Porzana porzana, Rallus aquaticus undGallinula chloropus untersucht.

Hans Jeikowski

1971-01-01

485

Die Technik der tibiotalaren Arthrodese mit Kompressionsmarknagel  

Microsoft Academic Search

Zusammenfassung Aufgrund noch nicht überzeugender Ergebnisse der Prothetik des oberen Sprunggelenks (OSG) ist die tibiotalare Arthrodese bei fortgeschrittener posttraumatischer Arthrose weiterhin Therapie der Wahl. Zur technischen Ausführung der Arthrodese am OSG steht eine Fülle von Verfahren zur Verfügung, wobei sich die Kompressionsarthrodese mittels internen Implantaten durchgesetzt hat. 137 Arthrodesen des OSG wurden mit Kompressionsmarknägeln durchgeführt. Mit Hilfe eines speziellen Nageldesigns

T. Mückley; T. Schütz; S. Srivastava; M. Goebel; O. Gonschorek; V. Bühren

2003-01-01

486

The Right To Die. Public Talk Series.  

ERIC Educational Resources Information Center

This program guide on the right to die provides policy issue information where ethical concerns have a prominent place. Three positions about the right to die are presented: (1) mercy killing and assisted suicide should be legally permitted in certain cases; (2) legal status should be given to living wills and other advance directives that would…

Pasquerella, Lynn

487

Stresses set up in the working parts of die sets during the pressing of metal powders  

Microsoft Academic Search

The powder compaction process constitutes an important link in the full technological cycle employed in the production of parts by the powder metallurgy technique. Although powder compaction has already received much attention in the literature [1-9, etc.] and considerable progress has been made in investigations of this process, more i-vestigational work is necessary if a clear understanding is to be

I. M. Fedorchenko; R. A. Kovynev; O. F. Polukhin

1970-01-01

488

COMMUNIQUE DE PRESSE / COMMUNIQUE DE PRESSE / COMMUNIQUE DE PRESSE Ecole Centrale Paris  

E-print Network

and Technology (South Korea) Pusan National University (South Korea) EcoleCentraleParis #12;COMMUNIQUE DE PRESSE) Japan Aerospace Exploration Agency (Japan) Korea Institute of Energy Research (South Korea and the Far East (Japan, Korea) closer in the field of research and its management with a special emphasis

Paragios, Nikos

489

Studies in Public Welfare, Paper Number 17: National Survey of Food Stamp and Food Distribution Program Recipients: A Summary of Findings on Income Sources and Amounts and Incidence of Multiple Benefits.  

ERIC Educational Resources Information Center

This report presents the findings of a national survey of food stamp program and food distribution program recipients. Specifically, this study provides information on the amounts of earned income, income from other private sources, and major cash and in-kind benefits that food stamp or food distribution program recipients receive from other…

Joint Economic Committee, Washington, DC.

490

Assembly of live micro-organisms on microstructured PDMS stamps by convective/capillary deposition for AFM bio-experiments  

NASA Astrophysics Data System (ADS)

Immobilization of live micro-organisms on solid substrates is an important prerequisite for atomic force microscopy (AFM) bio-experiments. The method employed must immobilize the cells firmly enough to enable them to withstand the lateral friction forces exerted by the tip during scanning but without denaturing the cell interface. In this work, a generic method for the assembly of living cells on specific areas of substrates is proposed. It consists in assembling the living cells within the patterns of microstructured, functionalized poly-dimethylsiloxane (PDMS) stamps using convective/capillary deposition. This versatile approach is validated by applying it to two systems of foremost importance in biotechnology and medicine: Saccharomyces cerevisiae yeasts and Aspergillus fumigatus fungal spores. We show that this method allows multiplexing AFM nanomechanical measurements by force spectroscopy on S. cerevisiae yeasts and high-resolution AFM imaging of germinated Aspergillus conidia in buffer medium. These two examples clearly demonstrate the immense potential of micro-organism assembly on functionalized, microstructured PDMS stamps by convective/capillary deposition for performing rigorous AFM bio-experiments on living cells.

Dague, E.; Jauvert, E.; Laplatine, L.; Viallet, B.; Thibault, C.; Ressier, L.

2011-09-01

491

Die Universitt Hamburg ist zertifiziert. audit familiengerechte hochschule  

E-print Network

Die Universität Hamburg ist zertifiziert. audit familiengerechte hochschule Die Universität Hamburg mit Drittmittelprojekten erwartet. Die Universität Hamburg legt auf die Qualität der Lehre besonderen Wert. Lehrerfahrungen und Vorstellungen zur Lehre sind darzulegen. Die Universität Hamburg will den

Hamburg,.Universität

492

Indentation of titanium processed by equal channel angular pressing  

NASA Astrophysics Data System (ADS)

Commercially pure titanium rods were processed by equal channel angular pressing (ECAP) to obtain an ultrafine-grained microstructure. The titanium rods were extruded for 2 passes at 623 K, using three different bending angles of 90°, 120° and 150°. For the bending angle of 90°, the titanium rods were extruded for 4 and 8 passes in addition to 2 passes. The microstructure of the ECAP-processed titanium was evaluated using the TEM technique. The bending angle had a strong effect on the grain refinement, while the number of pressing passes did not have a noteworthy effect on the evolution of the microstructure. Microindentations were conducted with the indentation load in the range 100-2000 mN. The indentation hardness decreased slightly with the increase in the indentation load. The titanium processed by the die with a bending angle of 90° had the highest indentation hardness. The energy ratio of the plastic energy to the total energy was found to be proportional to the ratio of the residual indentation depth to the maximum indentation depth.

Chen, Rong; Yang, Fuqian; Okazaki, Kenji; Ashraf Imam, M.; Feng, C. R.; Pao, Peter

2008-05-01

493

A wrinkling index for press forming  

Microsoft Academic Search

The current practice of assessing wrinkling in sheet metal stampings by visual inspection provides only a qualitative measure\\u000a of severity. A new quantitative index for assessing the severity of wrinkling in sheet metal samples was developed by comparing\\u000a qualitative observations by inspectors with quantitative measurements of surface distortions. Twenty-four dome height samples\\u000a were purposely made with different wrinkling severities, then

Pei-Chung Wang

1988-01-01

494

A comparison of impulse drying to double felted pressing on pilot- scale shoe presses and roll presses. Progress report, No. 6  

SciTech Connect

Pilot-scale shoe press and roll press experiments have been conducted to compare impulse drying and double felted pressing. Both ceramic coated and Beloit Type C press rolls have been evaluated. The experiments show that impulse drying can provide significantly higher outgoing solids than double felled pressing at the same impulse. For example, at an impulse of 0.234 MPa seconds (34 psi seconds), sheets at an ingoing solids of 52% were impulse dried (using the Beloit Type C press roll) to 68% solids while optimized double felled pressing could only yield press dryness of, at most, 60%.

Orloff, D.I.

1992-08-01

495

ARTICLE IN PRESS Physica A ( )  

E-print Network

in packet generation rate Xiao-Gai Tang, Eric W.M. Wong Department of Electronic Engineering, City. E-mail addresses: tang-xg@hotmail.com (X.-G. Tang), ewong@ee.cityu.edu.hk (E.W.M. Wong). 0378 this article in press as: X.-G. Tang, E.W.M. Wong, Information traffic in scale-free networks with fluctuations

Wong, Eric Wing-Ming

496

Die operative Behandlung des Hallux valgus (Nachuntersuchungen)  

Microsoft Academic Search

Zusammenfassung  1. DieSchedesche Op. ist im allgemeinen als ungenügend abzulehnen.\\u000a \\u000a 2. DieHuetersche Op. kommt nur bei den sehr hochgradigen Fällen mit ausgesprochener sekundärer Arthritis deformans in Frage.\\u000a \\u000a \\u000a \\u000a 3. DieLudloffsche Op. gibt in ihrer Originalform nur zum Teil zufriedenstellende Resultate. Empfohlen wird eine Kombination der modifiziertenLudloffschen mit derHohmannschen Methode.\\u000a \\u000a \\u000a \\u000a 4. Eine konsequente und richtige Nachbehandlung ist unbedingtes Erfordernis.

C. Mau; H. J. Lauber

1926-01-01

497

The War on Fraud and Error in the Food Stamp Program: An Evaluation of Its Effects in the Carter and Reagan Administrations.  

ERIC Educational Resources Information Center

An evaluation of efforts by the Carter and Reagan Administrations to reduce fraud, error, and mismanagement in social programs is provided, examining the food stamp program as an example. Data available do not make it possible to say whether these administrative and political efforts actually decreased fraud and error. (SLD)

Matt, Georg E.; Cook, Thomas D.

1993-01-01

498

Family Nutrition In Action This newsletter is supported with funding from the Expanded Food and Nutrition Program, USDA's Food Stamp Program, Florida  

E-print Network

and Nutrition Program, USDA's Food Stamp Program, Florida Department of Children and Families and the University food safety, call the toll-free USDA Meat and Poultry Hotline at 1-888-674-MPHotline (1 or disability. To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, 1400 Inde

Florida, University of

499

Silicon micro-masonry using elastomeric stamps for three-dimensional microfabrication This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-print Network

Silicon micro-masonry using elastomeric stamps for three-dimensional microfabrication This article AND MICROENGINEERING J. Micromech. Microeng. 22 (2012) 055018 (7pp) doi:10.1088/0960-1317/22/5/055018 Silicon micro-masonry present a micromanufacturing method for constructing microsystems, which we term `micro-masonry' based

Rogers, John A.

500

Food Stamp Participation is Associated with Fewer Meals Away From Home, yet Higher Body Mass Index and Waist Circumference in a Nationally Representative Sample  

ERIC Educational Resources Information Center

Objective: To examine associations between Food Stamp (FS) participation, meals away from home (MAFH), body mass index (BMI), and waist circumference (WC). Design: Cross-sectional study. Setting: Nationally representative. Participants: Data from low-income, FS-eligible individuals (N = 945) ages 20-65 years, responding to the 2005-2006 National…

Jilcott, Stephanie B.; Liu, Haiyong; DuBose, Katrina D.; Chen, Susan; Kranz, Sibylle

2011-01-01