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1

THE PERIODICAL PRESS ON POSTAGE STAMPS  

Microsoft Academic Search

The history of journalism is reflected in the philatelic issues of various countries. Stamps of the United States, the Soviet Union, Fmnce, the German Democratic Republic, Sweden, Spain, the nations of South America and the Third World depict mastheads and pages of newspapers and periodicals, portraits of their publishers and editors, press buildings and associations, schools of journalism, newsboys. Authors

Leona Rostenberg

1978-01-01

2

Stamping Die Making. 439-318/320.  

ERIC Educational Resources Information Center

|Each unit in this curriculum guide on stamping die making contains an introduction, objectives, materials required, lessons, space for notes, figures, and diagrams. There are 29 units in this guide, dealing with the following topics: EZ-MILL programming; EZ-MILL BATT; print of punch and EZ-MILL part programming; download to Computer Numerical…

Yunke, P.; And Others

3

A Web-based Intelligent Stamping Die Design System  

Microsoft Academic Search

Knowledge management is important for stamping die manufacturers because the domain knowledge provides their key competitiveness. In this paper, a web-based intelligent stamping die design system is proposed to help small and medium-sized enterprises to manage and exchange their domain knowledge. The XML based case representation, the case storage based on relational database and the whole case retrieval process is

Zhou Chi; Huang ZhenYuan

2008-01-01

4

Impact of Simulation Technology on Die and Stamping Business  

NASA Astrophysics Data System (ADS)

Over the last ten years, we have seen an explosion in the use of simulation-based techniques to improve the engineering, construction, and operation of GM production tools. The impact has been as profound as the overall switch to CAD/CAM from the old manual design and construction methods. The changeover to N/C machining from duplicating milling machines brought advances in accuracy and speed to our construction activity. It also brought significant reductions in fitting sculptured surfaces. Changing over to CAD design brought similar advances in accuracy, and today's use of solid modeling has enhanced that accuracy gain while finally leading to the reduction in lead time and cost through the development of parametric techniques. Elimination of paper drawings for die design, along with the process of blueprinting and distribution, provided the savings required to install high capacity computer servers, high-speed data transmission lines and integrated networks. These historic changes in the application of CAE technology in manufacturing engineering paved the way for the implementation of simulation to all aspects of our business. The benefits are being realized now, and the future holds even greater promise as the simulation techniques mature and expand. Every new line of dies is verified prior to casting for interference free operation. Sheet metal forming simulation validates the material flow, eliminating the high costs of physical experimentation dependent on trial and error methods of the past. Integrated forming simulation and die structural analysis and optimization has led to a reduction in die size and weight on the order of 30% or more. The latest techniques in factory simulation enable analysis of automated press lines, including all stamping operations with corresponding automation. This leads to manufacturing lines capable of running at higher levels of throughput, with actual results providing the capability of two or more additional strokes per minute. As we spread these simulation techniques to the balance of our business, from blank de-stacking to the racking of parts, we anticipate continued reduction in lead-time and engineering expense while improving quality and start-up execution. The author will provide an overview of technology and business evolution of the math-based process that brought an historical transition and revitalization to the die and stamping industry in the past decade. Finally, the author will give an outlook for future business needs and technology development directions.

Stevens, Mark W.

2005-08-01

5

Blank holding force control in panel stamping process using a database and FEM-assisted intelligent press control system  

Microsoft Academic Search

A database and FEM-assisted intelligent press control system was applied to sheet stamping process of trapezoidal panels. For applying the press control system to the stamping process of a non-symmetric shape, a radial assignment strategy of the process control line was proposed, and the average value of each process control line was employed as the entire process control value. In

Hiroshi Koyama; Robert H. Wagoner; Ken-ichi Manabe

2004-01-01

6

Development of an object-oriented blackboard model for stamping process planning in progressive die design  

Microsoft Academic Search

This paper reports preliminary work to investigate the suitability of using a blackboard framework as a problem-solving model for stamping process planning in progressive die design. The model is described at two levels: knowledge level and computational level. The knowledge level describes how the stamping process planning domain is represented in a blackboard architecture. The computational level describes how the

S. B. Tor; G. A. Britton; W. Y. Zhang

2005-01-01

7

A knowledge-based blackboard framework for stamping process planning in progressive die design  

Microsoft Academic Search

It is widely accepted that stamping process planning for the strip layout is a key task in progressive die design. However, stamping process planning is more of an art rather than a science. This is in spite of recent advances in the field of artificial intelligence, which have achieved a lot of success in incorporating built-in intelligence and applying diverse

S. B. Tor; G. A. Britton; W. Y. Zhang

2005-01-01

8

Effects of geometry and fillet radius on die stresses in stamping processes  

Microsoft Academic Search

This paper describes the use of the finite element method to analyze the failure of dies in stamping processes. For the die analyzed in the present problem, the cracks at different locations can be attributed to a couple of mechanisms. One of them is due to large principal stresses and the other one is due to large shear stresses. A

J. S Sun; K. H Lee; H. P Lee

2000-01-01

9

Influence of die variables on cavity press forging loads  

Microsoft Academic Search

Slug, die and process parameters largely determine the load requirements when forging any given part. An earlier report (Balogun 1974) has indicated the effects of flash dimensions on deformation forces during cavity press forging of round mild steel slugs.The current paper discusses the influences of three main die variables—die friction, extrusion ratio and flash land shape on press forging loads.

S. A. BALOGUN

1975-01-01

10

An analytical solution to springback of sheet metals stamped by a rigid punch and an elastic die  

Microsoft Academic Search

Springback is one of the fundamental factors affecting the quality of a stamped component. It has been recognised that springback can be controlled more easily when using an elastic die in a stamping process. However, the deformation of the die introduces more complex mechanisms of springback and an in-depth understanding of such processes is still lacking. This paper developed an

L. C. Zhang; Z. Lin

1997-01-01

11

Die shape design optimization of sheet metal stamping process using meshfree method  

Microsoft Academic Search

SUMMARY A die shape design sensitivity analysis (DSA) and optimization for a sheet metal stamping process is proposed based on a Lagrangian formulation. A hyperelasticity-based elastoplastic material model is used for the constitutive relation that includes a large deformation e:ect. The contact condition between a workpiece and a rigid die is imposed through the penalty method with a modi

Nam Ho Kim; Kyung Kook Choi; Jiun Shyan Chen

2001-01-01

12

Application of an integrated CAD\\/CAE\\/CAM system for stamping dies for automobiles  

Microsoft Academic Search

The globalization and competition in the automobile industry makes it necessary to reduce the time spent on product development.\\u000a Therefore, computer aided product development has become one of the most important techniques in the automobile industry.\\u000a According to the concurrent engineering concept, an integrated CAD\\/CAE\\/CAM system for automobile stamping die development\\u000a is established. The system is based on 3D surface

Bor-Tsuen Lin; Chun-Chih Kuo

2008-01-01

13

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

Microsoft Academic Search

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 advantage that it can use past knowledge and experience for case-based reasoning when it exists, and other reasoning approaches when it doesn't exist. A prototype system has been implemented

W. Y. Zhang; S. B. Tor; G. A. Britton

14

Draw-in Map - A Road Map for Simulation-Guided Die Tryout and Stamping Process Control  

SciTech Connect

Sheet metal forming is a displacement or draw-in controlled manufacturing process in which a flat blank is drawn into die cavity to form an automotive body panel. Draw-in amount is the single most important stamping manufacturing index that controls all forming characteristics (strains, stresses, thinning, etc.), stamping failures (splits, wrinkles, surface distortion, etc.) and line die operations and automations. Draw-in Map is engineered for math-based die developments via advanced stamping simulation technology. Then the Draw-in Map is provided to die makers in plants as a road map for math-guided die tryout in which the die tryout workers follow the engineered tryout conditions and matches the engineered draw-in amount so that the tryout time and cost are greatly reduced, and quality is ensured. The Map can also be used as a math-based trouble-shooting tool to identify the causes of formability problems in stamping production. The engineered Draw-in Map has been applied to all draw die tryout for all GM vehicle programs since 1998. A minimum 50% reduction in both lead-time and cost and significant improvement in panel quality in tryout have been reported. This paper presents the concept and process to apply the engineered Draw-in Map in die tryout.

Wang Chuantao; Zhang, Jimmy J.; Goan, Norman [General Motors Corp. Manufacturing Engineering, Die Center, 2000 Centerpoint, Pontiac, MI 48341 (United States)

2005-08-05

15

Draw-in Map - A Road Map for Simulation-Guided Die Tryout and Stamping Process Control  

NASA Astrophysics Data System (ADS)

Sheet metal forming is a displacement or draw-in controlled manufacturing process in which a flat blank is drawn into die cavity to form an automotive body panel. Draw-in amount is the single most important stamping manufacturing index that controls all forming characteristics (strains, stresses, thinning, etc.), stamping failures (splits, wrinkles, surface distortion, etc.) and line die operations and automations. Draw-in Map is engineered for math-based die developments via advanced stamping simulation technology. Then the Draw-in Map is provided to die makers in plants as a road map for math-guided die tryout in which the die tryout workers follow the engineered tryout conditions and matches the engineered draw-in amount so that the tryout time and cost are greatly reduced, and quality is ensured. The Map can also be used as a math-based trouble-shooting tool to identify the causes of formability problems in stamping production. The engineered Draw-in Map has been applied to all draw die tryout for all GM vehicle programs since 1998. A minimum 50% reduction in both lead-time and cost and significant improvement in panel quality in tryout have been reported. This paper presents the concept and process to apply the engineered Draw-in Map in die tryout.

Wang, Chuantao (C. T.); Zhang, Jimmy J.; Goan, Norman

2005-08-01

16

Evaluation and Reduction of Machine Difference in Press Working with Utilization of Dedicated Die Support Structure and Numerical Methodologies  

NASA Astrophysics Data System (ADS)

In this study, support structures of a die for press working are discussed to solve the machine difference problems amongst presses. The developed multi-point die support structures are not only utilized for adjusting elastic deformation of a die, but also for in-process sensing of the behavior of a die. The structures have multiple support cells between a die and the slide of a press machine. The cell, known as `a support unit,' has the strain gauges attached on its side, and works in both ways as a kind of spring and a load and displacement sensor. The cell contacts on the die with a ball-contact, therefore it transmits only the vertical force at each support point. The isolation of a momentum and horizontal load at each support point contributes for a simple numerical model; it helps us to know the practical boundary condition at the points under an actual production. In addition, the momentum and horizontal forces at the points are useless for press working; the isolation of these forces contributes to reduce a jolt and related machine differences. The horizontal distribution of support units is changed to reduce elastic deformation of a die; it contributes to reduce a jolt, alignment errors of a die and geometrical errors of a product. The validity of those adjustments are confirmed with evaluating a product shape of a deep drawing and measuring jolts between upper and lower stamping dies. Furthermore, die deformation in a process is analyzed with using elastic FE analysis with actual bearing loads compiled from each support unit.

Ohashi, Takahiro

2011-05-01

17

On finishing of pressing die surfaces using machine hammer peening  

Microsoft Academic Search

Machine hammer peening (MHP) is a new method for finishing of surfaces. With this method, the workpiece surface is hammered\\u000a with a spherical carbide tool. The main objective of the study was to evaluate whether the MHP method could become a plausible\\u000a substitute for manual polishing in pressing die manufacturing where nodular cast iron is a common workpiece material. To

Johan Berglund; Magnus Liljengren; Bengt-Göran Rosén

2011-01-01

18

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

19

Die design for stamping a notebook case with magnesium alloy sheets  

Microsoft Academic Search

In the present study, the stamping process for manufacturing a notebook top cover case with LZ91 magnesium–lithium alloy sheet at room temperature was examined using both the experimental approach and the finite element analysis. A four-operation stamping process was developed to eliminate both the fracture and wrinkle defects occurred in the stamping process of the top cover case. In order

Heng-Kuang Tsai; Chien-Chin Liao; Fuh-Kuo Chen

2008-01-01

20

Investigation of Contact Pressure Distribution on Sheet Metal Stamping Tooling Interfaces: Surface Modeling, Simulations, and Experriments  

Microsoft Academic Search

In stamping operations, sheet metal is formed into a desired shape by pressing it in a hydraulic or mechanical press between suitably shaped dies. As a predominant manufacturing process, sheet metal forming has been widely used for the production of automobiles, aircraft, home appliances, beverage cans and many other industrial and commercial products.\\u000aA major effort till date on stamping

Sripati Sah

2007-01-01

21

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

22

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

23

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

24

Computer-aided structural design of drawing dies for stamping processes based on functional features  

Microsoft Academic Search

This paper describes a structural design system for 3D drawing dies based on functional features using a minimum set of initial\\u000a information. In addition, it is also applicable to assign the functional features flexibly before accomplishing the design\\u000a of a solid model for the main parts of a drawing die, such as upper die, lower die, and blank holder. The

Bor-Tsuen Lin; Ming-Ren Chang; Hau-Luen Huang; Chun-Yu Liu

2009-01-01

25

Developments in Die Pressing Strategies for Low-Cost Titanium Powders  

SciTech Connect

Recent developments in the production of low-cost titanium powders have rejuvenated interest in manufacturing titanium powder metallurgy components by direct press and sinter techniques. However excessive friction typically observed during titanium powder pressing operations leads to numerous problems ranging from non-homogeneous green densities of the compacted powder to excessive part ejection forces and reduced die life due to wear and galling. An instrumented double-acting die press was developed to both investigate the mechanics of titanium powder pressing (particularly for the new low-cost powder morphologies) and to screen potential lubricants that could reduce frictional effects. As will be discussed, the instrument was used to determine friction coefficients and to evaluate a number of candidate lubricants. These results were then used to optimize the lubricant system to reduce die-wall stresses and improve part density uniformity.

Hovanski, Yuri; Weil, K. Scott; Lavender, Curt A.

2009-05-01

26

Basic Stamp  

NSDL National Science Digital Library

This site from Parallax, Inc. gives some information about basic stamp microcontrollers. A Basic-Stamp microcontroller is a single-board computer. Parallax makes a variety of controllers; the BASIC Stamp II uses a PIC16C57microchip.

2012-10-12

27

Effects of Heat Treatments on the On-Line Service Life of a Press Die Manufactured by W-Edm  

NASA Astrophysics Data System (ADS)

Effects of heat treatments on the on-line service life of a press die manufactured by W-EDM are studied. In this work, four manufacturing processes for a press die are considered: (1) milling and then grinding, (2) wire-cut electric discharge machining (W-EDM), (3) low temperature heat treatment after W-EDM, and (4) high temperature heat treatment after W-EDM. On-line punching experiments for an automobile part of BL646-chain are performed. The amount of wear of the die and punch, roll-over and burnish depth in the punched chain are measured every 1,000 strokes. Overall productivities are carefully compared. Finally, it is concluded that heat treatment after W-EDM for a press die can enhance its on-line service life. Especially, high temperature heat treatment after W-EDM is very attractive as a fast and cheap manufacturing method for a press die.

Choi, Kye-Kwang; Lee, Yong-Shin

28

Die rol van die Afrikaanse pers in die taalstryd van die jare 1930\\/(The role of the Afrikaans press in the language struggle of the 1930's)  

Microsoft Academic Search

This article deals with the different ways in which Afrikaans newspapers in the 1930's supporting the United Party (Die Vaderland, Die Suiderstem, and Die Volkstem) and those newspapers supporting the National Party (Die Burger, Die Volksblad and Die Transvaler) covered the Afrikaans-English language question during the period of party political coalition (1934–1939).The newspapers of both groups attempted to promote language

Jaap Steyn

1986-01-01

29

Deformation mechanism at impact test of Al11% Si alloy processed by equal-channel angular pressing with rotary die  

Microsoft Academic Search

Al-11%Si (mass fraction) alloy was transformed into a ductile material by equal-channel angular pressing (ECAP) with a rotary die. Two mechanisms at impact test, slip deformation by dislocation motion and grain boundary sliding, were discussed. The ultrafine grains with modified grain boundaries and the high content of fine particles (

Ai-bin MA; Y. NISHIDA; Jing-hua JIANG; N. SAITO; I. SHIGEMATSU; A. WATAZU

2007-01-01

30

Feature-based metal stamping part and process design. Part II: stamping process planning  

Microsoft Academic Search

In metal stamping development, stamping process planning plays quite an important role for the related die design. As mentioned in Part-I [Feature-based metal stamping part and process design. Part 1: stampability evaluation, 2007, 45, 2673–2695], the feature can encapsulate comprehensive engineering information; this paper proposes to realize stamping process planning based on feature mapping. A feature mapping system, between a

Dunbing Tang; Benhe Gao

2007-01-01

31

Die rol van die pers in die nuwe Suid- Afrikaanse politieke bedeling \\/ The role of the press in the new South African political dispensation  

Microsoft Academic Search

The author briefly sketches the new political dispensation in South Africa and then argues that the mass media, and especially the press, play a role of cardinal importance in the political forum. As far as press and democracy are concerned, the author distinguishes between “majority democracy” and “concensus democracy” and proceeds to illustrate the part the press plays and should

J. C. Heunis

1984-01-01

32

Die Suid-Afrikaanse pers — 'n magtige instelling\\/ (The South African press — a powerful institution)  

Microsoft Academic Search

During the preceding two decades - during the sixties and seventies of the nineteenth century - the South African Press has developed into a powerful organ of public and political opinion. In the turbulent political climate prevalent at that time, the language resorted to in reports on speeches and in leading articles was very severe compared to what we are

Marais Viljoen

1982-01-01

33

Cracking mechanism of PuO/sub 2/ fuel hot pressed in graphite dies  

SciTech Connect

Internal cracking in PuO/sub 2/ fuel is caused by gas pressure during hot pressing. Surface cracks are caused by tensile stresses arising from the phase change of ..cap alpha..-PuO/sub 2/ to ..gamma..-PuO/sub 2/ on reoxidation. To control cracking, process variables were chosen to minimize fuel reduction and to give large intergranular porosity. 19 figures.

Taylor, D.H.

1981-01-01

34

Design of Hot Stamping Tools with Cooling System  

Microsoft Academic Search

Hot stamping with high strength steel is becoming more popular in automotive industry. In hot stamping, blanks are hot formed and press hardened in a water-cooled tool to achieve high strength. Hence, design of the tool with necessary cooling significantly influences the final properties of the blank and the process time. In this paper a new method based on systematic

H. Hoffmann; H. So; H. Steinbeiss

2007-01-01

35

Fatality Assessment and Control Evaluation (FACE) Report for California: A Punch Press Operator Dies When Struck By a Piece of Metal in the Abdomen.  

National Technical Information Service (NTIS)

A 39 year-old male machine operator died when he was struck in the abdomen by a piece of metal that came from the punch press he was operating. The decedent was using the machine to center punch holes into metal plates when the incident occurred. The mach...

2001-01-01

36

SPHERICAL DIE  

DOEpatents

A die is presented for pressing powdered materials into a hemispherical shape of uniforin density and wall thickness comprising a fcmale and male die element held in a stationary spaced relation with the space being equivalent to the wall thickness and defining the hemispherical shape, a pressing ring linearly moveable along the male die element, an inlet to fill the space with powdered materials, a guiding system for moving the pressing ring along the male die element so as to press the powdered material and a heating system for heating the male element so that the powdered material is heated while being pressed.

Livingston, J.P.

1959-01-27

37

Bounded time-stamps  

Microsoft Academic Search

Time-stamps are labels which a system adds to its data items. These labels enable the system to keep track of the temporal precedence relations among its data elements. Many distributed protocols and some applications use the natural numbers as time-stamps. The natural numbers however are not useful for bounded protocols. In this paper we develop a theory ofbounded time-stamps. Time-stamp

Amos Israeli; Ming Li

1993-01-01

38

Bounded time-stamps  

Microsoft Academic Search

Time-stamps are numerical labels which enable a system to keep track of temporal precedence relation among its data elements. Traditionally time-stamps are used as unbounded numbers and inevitable overflows cause a loss of this precedence relation. In this paper we develop a complete theory of bounded time-stamps. Time-stamp systems are defined and the complexity of their implementation is fully analyzed.

Amos Israeli; Ming Li

1987-01-01

39

Polymer stamps for nanoimprinting  

Microsoft Academic Search

Stamp fabrication for nanoimprinting can be significantly simplified, when specialized crosslinking polymers are applied to pattern definition. The polymer patterns can be used as stamps themselves. Two possibilities are reported: (1) An e-beam sensitive resist was developed, which enables the fabrication of polymer-on-silicon stamps. Patterns with a feature size of 70 nm could be created. (2) Full plastic stamps were

K. Pfeiffer; M. Fink; G. Ahrens; G. Gruetzner; F. Reuther; J. Seekamp; S. Zankovych; C. M. Sotomayor Torres; I. Maximov; M. Beck; M. Graczyk; L. Montelius; H. Schulz; H.-C. Scheer; F. Steingrueber

2002-01-01

40

Plate stamping of masterplates for the Tile-Cal hadronic calorimetric for ATLAS detector at CERN  

SciTech Connect

Various methods have been explored for the fabrication of the large trapezoidal plates used in the construction of the Tile-Cal hadronic calorimeter for ATLAS. The options include die stamping, laser cutting, waterjet cutting, plasma arc cutting, and a combination of machining and laser cutting. Very early in the program, the Argonne group began investigating the possibility of die stamping the master plates. At that time it was felt that two dies would be necessary to achieve the accuracy required. Quotations were received for dies for both the master and spacer plates. Concern was expressed by many members of the collaboration that due to the very precise tolerances required, die stamping, using standard dies, would not be adequate. Fine blanking techniques were felt to be adequate, but were cost prohibitive. Two methods were finally used for the initial cutting of prototype plates, laser cutting and die stamping. Only the die stamping, will be reviewed here.

Hill, N.F.; Petereit, E.; Wood, K.; Proudfoot, J.

1996-05-16

41

Mechanical Behavior and Microstructural Development of 6063-T1 Aluminum Alloy Processed by Equal-Channel Angular Pressing (ECAP): Die Channel Angle Influence  

NASA Astrophysics Data System (ADS)

A commercial 6063-T1 aluminum alloy was investigated in this study. The specimens were processed for six, seven, and eight equal-channel angular pressing (ECAP) passes using three die channel angles: 90°, 100°, and 110°, respectively (maintaining approximately the same value for the accumulated equivalent strain in each case). After ECAP, samples were cut from each specimen and were prepared for metallographic analysis and mechanical testing. The microstructures of the ECAP treated and as-received material were investigated using both optical microscopy and scanning electron microscopy. It was found that the optimum ECAP die has a channel angle of 90°; the microstructure was more refined and homogeneous and second-phase particles were smaller as the die channel angle value decreased. All samples (ECAP processed and as-received) were also mechanically investigated in compression and microhardness tests. The maximum effect was observed when the 90° ECAP die was used, and significant total increases in ultimate compressive strength, yield strength, compression modulus, and microhardness were recorded compared to the as-received material. Also, it was shown that if the die channel angle value increases, then all the above mentioned mechanical properties decrease.

Serban, Nicolae; Ghiban, Nicolae; Cojocaru, Vasile-Danut

2013-06-01

42

Stamping of Liquid Metals.  

National Technical Information Service (NTIS)

The report is a pamphlet devoted to a new advanced technological process - stamping of parts from liquid metals; in it is expounded the experience of a number of enterprises in the stamping of liquid nonferrous metals and steel, and also the results of in...

M. A. Baranovskii E. I. Verbitskii

1968-01-01

43

Stamping Out Misconceptions.  

ERIC Educational Resources Information Center

Describes the use of rubber hand-stamps to generate molecular pictures. These stamps (prepared with shapes of atoms and molecules at little cost by small, local print shops) can be used in creating pictures representing the microscopic state that can be linked to macroscopic descriptions for active conceptual exploration. (JN)

Bradley, J. D.; Brand, M.

1985-01-01

44

Stamp of Approval  

ERIC Educational Resources Information Center

In an age of exquisite graphic art, perhaps the most universally viewed examples are to be found in the commemorative stamps issued by the Postal Service. At Corona del Mar High School, Newport Beach, California, students cooperated to design a stamp and display their work before the public. They therefore learn how the Postal Service selects a…

Swanson, Joan; Curtis, David

1977-01-01

45

Stamp of Approval  

ERIC Educational Resources Information Center

|In an age of exquisite graphic art, perhaps the most universally viewed examples are to be found in the commemorative stamps issued by the Postal Service. At Corona del Mar High School, Newport Beach, California, students cooperated to design a stamp and display their work before the public. They therefore learn how the Postal Service selects a…

Swanson, Joan; Curtis, David

1977-01-01

46

Physics-Related Stamps  

NSDL National Science Digital Library

This page exhibits stamps displaying physicists, mathematicians, and engineers important in physics. The stamps are combined in 'albums' by the people who contributed the scans to the collection. Use the search function of your browser to look for a particular name.

Reinhardt, Joachim

2004-12-18

47

Stamping axisymmetric forgings  

Microsoft Academic Search

As a rule, cylindrical blanks are used in hot bulk stamping of axisymmetric parts. However, cutting the rod into measured lengths is associated with fluctuation in mass of the blank on account of distortion of its end geometry and change in its length. Therefore, seams arise in the stamping of such blanks. A promising approach to the deformation of axisymmetric

V. N. Peretyat’ko; A. V. Bakhaev; M. V. Filippova; S. A. Vakhman

2009-01-01

48

Valuation method for effects of hot stamping process parameters on product properties using hot forming simulator  

Microsoft Academic Search

Hot stamping is one of the hot forming processes for manufacturing products of lightweight construction such as lightweight vehicles. Knowledge on the characteristics of the hot stamping process is significant in designing and optimizing the process conditions, dies and tools; however, until now, the characteristics of this process, such as the relationships between a product property and die temperature and

Katsuyoshi Ikeuchi; Jun Yanagimoto

2011-01-01

49

Nickel stamp fabrication using step & stamp imprint lithography  

Microsoft Academic Search

In this work we report of SSIL approach to fabricate a master for nickel stamp. Using this method we produced large area metal stamps with wafer size up to 100mm with 100nm patterns. Electron beam patterned silicon stamps with size of a few square millimeters were used in patterning. The pattern of the stamp was transferred into a 100mm silicon

Tomi Haatainen; Päivi Majander; Tommi Riekkinen; Jouni Ahopelto

2006-01-01

50

Die CSU  

Microsoft Academic Search

Die bayerischen Landtagswahlen vom 28. September 2008 bedeuteten eine tiefe Zäsur für die erfolgsverwöhnte christlich-soziale\\u000a Regierungspartei Bayerns. Vom „Ende der Staatspartei“, dem „Verlust der Einzigartigkeit Bayerns“, sogar von einer „Revolution“\\u000a im süddeutschen Freistaat war in der Presse die Rede. Schließlich hatte die CSU mehr als vierzig Jahre lang die bayerische\\u000a Staatsregierung gestellt, ohne dabei auf einen Koalitionspartner angewiesen zu sein.

Stephan Klecha; Clemens Wirries

51

Beautiful, Collectible Duck Stamp 1990.  

National Technical Information Service (NTIS)

Presents an overview of the migratory bird hunting and conservation stamp, known commonly as the duck stamp. Discussed are the process of selecting a design, creation of the stamp, and the uses for and benefits of purchasing a duck stamp. Includes an inte...

1994-01-01

52

PAM-STAMP in the simulation of stamping process of an automotive component  

Microsoft Academic Search

The present study focuses on the stamping process simulation of automotive component using PAM-STAMPTM simulation software. A die geometry of an automotive component has been simulated in this study. Safe limit of blank holder forces have been identified with respect to different parametric conditions. Plain carbon steel, reinforced steel and aluminum alloys have been used as the work materials for

I. A. Choudhury; O. H. Lai; L. T. Wong

2006-01-01

53

Optical force stamping lithography.  

PubMed

Here we introduce a new paradigm of far-field optical lithography, optical force stamping lithography. The approach employs optical forces exerted by a spatially modulated light field on colloidal nanoparticles to rapidly stamp large arbitrary patterns comprised of single nanoparticles onto a substrate with a single-nanoparticle positioning accuracy well beyond the diffraction limit. Because the process is all-optical, the stamping pattern can be changed almost instantly and there is no constraint on the type of nanoparticle or substrates used. PMID:21992538

Nedev, Spas; Urban, Alexander S; Lutich, Andrey A; Feldmann, Jochen

2011-10-17

54

The Roman oculist stamps.  

PubMed

Roman Oculist stamps testify to an active practice in the treatment of eye disease during the period of the Roman Empire. They demonstrate a classification of ocular disease, a system of treatment and reveal the names of practitioners. PMID:8936780

Marmion, V J

1995-01-01

55

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

56

Intelligent sheet stamping process using segment blankholder modules  

Microsoft Academic Search

A sheet forming simulator with a finely segmented blank holder for stamping process of non-circular parts was developed to confirm the effect of variable distributed blank holding pressure (BHP). The BHP was controlled through an intelligent press control system. The same evaluation functions for fracture and wrinkling as ones in the previous work were adopted for fuzzy inference of incremental

Tetsuya Yagami; Ken-ichi Manabe; Ming Yang; Hiroshi Koyama

2004-01-01

57

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...

58

Do food stamps cause obesity?  

Microsoft Academic Search

I use changes in immigrant eligibility for food stamps under the 1996 federal law and heterogeneous state responses to set up a natural experiment research design to study the effect of food stamps on Body Mass Index (BMI) of adults in immigrant families. I find that in the post-1996 period food stamps use by foreign-born unmarried mothers with a high

Neeraj Kaushal

2007-01-01

59

Integrated Stamping Simulation Using State Of The Art Techniques To Fulfill Quality Assessment Requirements  

SciTech Connect

The last few years have seen the use of stamping simulation evolve to the extent that it is now a mainstream activity; a core part of the press tool engineering process. Now, new requirements for the use of challenging materials like Dual phase / Complex phase steel, VHSS, and aluminum, together with more stringent quality expectations, and shorter development cycles, there is a need to assess the panel quality in a wider context, before committing to tool manufacture.The integrated approach from ESI Group allows early up-front feasibility assessment, geometry and process optimization, and detailed process validation all within one system. Rapid die design and quick forming simulation modules play an essential role in the early stages of the process. A seamless connection between simulation and geometry is a vital characteristic, with the accurate simulation being used to validate and fine tune the process in order to assess final component quality in unprecedented detail, utilizing some of the most accurate material models available today. The combination of the distributed memory processing (DMP) solver together with new cost effective cluster based compute servers provide a practical solution to the problems of 'one million element' model sizes, and more sophisticated modeling methodologies become realistic for the first time.It is no longer sufficient to merely focus on the draw die, forming simulation must now consider the entire die line up. Typically, around half of forming issues arise from the draw die, so the time has now come to address the other half as well{exclamation_point} This paper will discuss how the PAM-STAMP 2G{sup TM} integrated solution is successfully used to deliver a positive business impact, by providing virtual panel quality assessment, tolerance control, and springback compensation. The paper will also discuss how other forming processes can be accurately modeled using the new modules.

Ling, David; Lambriks, Marc; El Khaldi, Fouad [PARC D'AFFAIRES SILIC - 99 rue des Solets - 94513 Rungis cedex (France)

2005-08-05

60

Study on the springback in metal stamping for a male hinge of an automotive part  

Microsoft Academic Search

Industrial automation processes has lead to an increasing need for more precise parts. A stamping die is a special and one of a kind precision tool that cuts and forms sheet metal into desired shape. Springback, wrinkling and tearing are some of the common defects in stamped parts. The aim of this research work is to develop and apply an

Suhadiyana Hanapi; Omar Abdul Rahman; Roseleena Jaafar; Wan Emri Wan Abdul Rahman; Farrahshaida Mohd Salleh; Izdihar Tharazi

2010-01-01

61

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

62

Stamp of Approval  

ERIC Educational Resources Information Center

|Advanced Placement (AP) Chemistry and the National AP Chemistry Examination are both critical to secondary level institutions nationwide. The use of a national embossing stamp to attest to successful completion of an AP Chemistry course and exam to ensure college credit is a novel idea worth consideration. Moreover, the concept could be expanded…

Meraw, Leonard J.

2007-01-01

63

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.

64

Chemistry on Stamps.  

ERIC Educational Resources Information Center

|Suggests how postage stamps can be incorporated into chemistry teaching. Categories considered include emergence of chemistry as a science, metric system, atoms (and molecules and ions), stoichiometry, energy relationships in chemical systems, chemical bonding, nuclear chemistry, biochemistry, geochemistry, matter (gases, liquids, and solids),…

Schreck, James O.

1986-01-01

65

An analysis of drawbead restraining force in the stamping process  

Microsoft Academic Search

A theoretical model based on the virtual work principle was proposed to calculate the restraining force produced by the drawbead located on a stamping die surface. In the theoretical model the deformation of the sheet metal drawn over the groove shoulder or bead is assumed to be subjected to bending, sliding and unbending processes, and only the sliding process is

Fuh-Kuo Chen; Pao-Ching Tszeng

1998-01-01

66

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

67

Hemp Stamps Bring Record Prices  

Microsoft Academic Search

The artifacts of hemp and marijuana's rich histories are some of the hottest articles on the secondary market today. Revenue stamps issued under the Marihuana Tax Act of 1937 were recently auctioned by the Smithsonian Institute to raise money for future acquisitions. The prices received shattered all preauction estimates. Other collectable stamps have been issued by various states of the

Don Wirtshafter; Michael Krawitz

2006-01-01

68

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

Microsoft Academic Search

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

Hong-Seok Choi; Se-Yoon Ha; Seung-Hoon Cha; Chung-Gil Kang; Byung-Min Kim

2011-01-01

69

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?...

70

Efficient Broadcast Time-Stamping  

Microsoft Academic Search

)Josh BenalohClarkson UniversityMichael de MareClarkson UniversityApril 21, 1992Efficient Broadcast Time-Stamping(Extended Abstract)AbstractEven using an authenticated synchronous broadcast model, the task of unforgeablytime-stamping digital documents still presents some problems. It is simply not practicalto assume that all participants will record and store everyone else's documents so thatcreation times can be verified. This paper presents a time and space efficient...

Josh Benaloh; Michael de Mare

1991-01-01

71

An experimental study of contact pressure distribution in panel stamping operations  

Microsoft Academic Search

This paper presents an analysis of the dynamic contact pressure distribution at the sheet metal-tooling interface in normal\\u000a and defective panel stamping operations. Specifically, the stamping of a 1.27?×?20?×?15 cm rectangular aluminum alloy panel\\u000a has been simulated using finite-element modeling methods. The modeling results are leveraged to determine the forces acting\\u000a on sensors embedded in the die structure. Based on these

Sripati Sah; Robert X. Gao

2011-01-01

72

HIGH PRESSURE DIES  

DOEpatents

A press was invented for subjecting specimens of bismuth, urania, yttria, or thoria to high pressures and temperatures. The press comprises die parts enclosing a space in which is placed an electric heater thermally insulated from the die parts so as not to damage them by heat. The die parts comprise two opposed inner frustoconical parts and an outer part having a double frustoconical recess receiving the inner parts. The die space decreases in size as the inner die parts move toward one another against the outer part and the inner parts, though very hard, do not fracture because of the mode of support provided by the outer part.

Wilson, W.B.

1960-05-31

73

Thermomechanical coupled simulation of hot stamping components for process design  

Microsoft Academic Search

At present, hot stamping represents an innovative manufacturing process for forming of high strength steels, implying a sheet\\u000a at austenite temperature being rapidly cooled down and formed into a die at the same time (quenching). This forming process\\u000a is used for the manufacturing of automobile structural components with a strength of up to 1,500 MPa, thus enabling extensive\\u000a cost savings and

A. Erman Tekkaya; Hossein Karbasian; Werner Homberg; Matthias Kleiner

2007-01-01

74

Direct imprint of nanostructures in metals using porous anodic alumina stamps  

NASA Astrophysics Data System (ADS)

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.

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

2013-06-01

75

Current Economic Research on Food Stamp Use.  

National Technical Information Service (NTIS)

This report summarizes four selected food stamp research studies made by analysts in the Economics, Statistics, and Cooperative Service, U.S. Department of Agriculture. The studies focused on the Food Stamp Program's effect on food prices, sales by region...

W. T. Boehm P. E. Nelson

1978-01-01

76

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

77

27 CFR 479.162 - Stamps authorized.  

Code of Federal Regulations, 2013 CFR

...and 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...

2013-04-01

78

48 CFR 246.472 - Inspection stamping.  

Code of Federal Regulations, 2012 CFR

...inspection approval marking designs (stamps) may be used for both prime...subcontracts. Follow the procedures at PGI 246.472(a) for use of DoD inspection stamps. (b) Policies and procedures...Administration (NASA) quality status stamps are contained in NASA...

2012-10-01

79

Food Stamps. Learning Packet No. 2.  

ERIC Educational Resources Information Center

|This package of instructional materials is designed to aid adults in prison to perform the functional skill of applying for food stamps. The materials consist of instructions for teachers, a sample application for food stamps, a student's work sheet and answer sheet, vocabulary flash cards, and resource materials on food stamps. (MKM)|

American Bar Association, Washington, DC. Clearinghouse for Offender Literacy Programs.

80

Massively Parallel Processing for Fast and Accurate Stamping Simulations  

NASA Astrophysics Data System (ADS)

The competitive automotive market drives automotive manufacturers to speed up the vehicle development cycles and reduce the lead-time. Fast tooling development is one of the key areas to support fast and short vehicle development programs (VDP). In the past ten years, the stamping simulation has become the most effective validation tool in predicting and resolving all potential formability and quality problems before the dies are physically made. The stamping simulation and formability analysis has become an critical business segment in GM math-based die engineering process. As the simulation becomes as one of the major production tools in engineering factory, the simulation speed and accuracy are the two of the most important measures for stamping simulation technology. The speed and time-in-system of forming analysis becomes an even more critical to support the fast VDP and tooling readiness. Since 1997, General Motors Die Center has been working jointly with our software vendor to develop and implement a parallel version of simulation software for mass production analysis applications. By 2001, this technology was matured in the form of distributed memory processing (DMP) of draw die simulations in a networked distributed memory computing environment. In 2004, this technology was refined to massively parallel processing (MPP) and extended to line die forming analysis (draw, trim, flange, and associated spring-back) running on a dedicated computing environment. The evolution of this technology and the insight gained through the implementation of DM0P/MPP technology as well as performance benchmarks are discussed in this publication.

Gress, Jeffrey J.; Xu, Siguang; Joshi, Ramesh; Wang, Chuan-Tao; Paul, Sabu

2005-08-01

81

Applying STAMP in Accident Analysis  

Microsoft Academic Search

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 where the basic concept is not an event but a constraint. This paper shows

Nancy Leveson; Mirna Daouk; Nicolas Dulac; Karen Marais

2003-01-01

82

Device for Stamping out Parts.  

National Technical Information Service (NTIS)

The object of the invention is a device for stamping out parts, for example, from sheet metal through shaping by pressure which is produced through an explosion in a hermetically sealed chamber, the pressure being extered on the surface of stock material ...

R. V. Pikhtovnikov

1965-01-01

83

Metric units and postage stamps  

Microsoft Academic Search

The metric system has evolved from the French (``metre'') units of 1790 to be officially recognized by the Eleventh General Conference on Weights and Measures as the International System of Units (SI) in 1960. This note brings together brief biographical notes of the scientists for whom many SI units are named, along with reproductions of postage stamps from around the

Donald W. Hillger

1999-01-01

84

SCB - Stamped Circuit Board technology  

Microsoft Academic Search

Summary form only given. With its Stamped Circuit Board (SCB) technology Heraeus is able to offer a comprehensive concept for the realization of reliable and low cost solutions to thermal dissipation. Whilst requirements are ever increasing, electronic systems themselves continue to become smaller and more complex. Capacities are greater, and the respective power losses have to be dealt with in

M. Benedikt; T. Stenger; K. Andreas; F. Kru?ger

2010-01-01

85

New thermostable steels for hot dies  

Microsoft Academic Search

The life of die equipment is an important aspect of the efficiency of hot stamping. The die life may be increased, in particular, by using steels with specified physical and mechanical properties at high temperatures. The development of new steels and determination of optimal heat-treatment conditions must be based on analysis of the operating conditions of the tool and determination

E. I. Ponkratin; D. V. Lenartovich; A. B. Steblov

2009-01-01

86

Press Seaweed  

NSDL National Science Digital Library

In this activity, learners will collect, dry and press seaweed over the course of four days in a similar way that artists/crafters press flowers. This process will encourage learners to appreciate the beauty of the colors, shapes, and structure of seaweed by pressing seaweed.

Aquarium, The F.

2010-01-01

87

Investigation of micro\\/meso sheet soft punch stamping process – simulation and experiments  

Microsoft Academic Search

Different form traditional forming process, sheet soft punch process uses only a rigid die and the other tool set is a flexible medium, such as natural or synthetic rubbers. In this study, a kind of micro\\/meso sheet soft punch stamping process to fabricated micro channels is investigated via numerical simulations and experiments. Plane strain finite element analysis (FEA) models of

Linfa Peng; Peng Hu; Xinmin Lai; Deqing Mei; Jun Ni

2009-01-01

88

Imprinted polymer stamps for UV-NIL  

Microsoft Academic Search

Thermal step and stamp nanoimprint lithography (SSIL) offers an alternative to fabricate transparent polymer stamps for UV-imprinting. The fabrication process does not require any other subsequent steps, e.g. dry etching or anti adhesive coating.In this work, we have manufactured UV-stamp by combining patterns of two different silicon masters. The patterns of the silicon masters were transferred into resin coated quartz

T. Haatainen; T. Mäkelä; J. Ahopelto; Y. Kawaguchi

2009-01-01

89

39 CFR 551.1 - Semipostal Stamp Program.  

Code of Federal Regulations, 2010 CFR

...Office of Stamp Services has primary responsibility for administering the Semipostal Stamp Program. The Office of Accounting, Finance, Controller has primary responsibility for the financial aspects of the Semipostal Stamp Program. [67...

2010-07-01

90

39 CFR 551.1 - Semipostal Stamp Program.  

Code of Federal Regulations, 2010 CFR

...Office of Stamp Services has primary responsibility for administering the Semipostal Stamp Program. The Office of Accounting, Finance, Controller has primary responsibility for the financial aspects of the Semipostal Stamp Program. [67...

2009-07-01

91

The Effects of Food Stamps on Obesity  

Microsoft Academic Search

Poverty has historically been associated with a decrease in food consumption. This at least partially changed in 1964 when the Food Stamp Act began guaranteeing food for those in poverty. Since the Act’s passage, the prevalence of obesity has increased dramatically, particularly among those with low incomes. This paper examines the effects of the Food Stamp Program on the prevalence

Charles L. Baum II

2010-01-01

92

The Effects of Food Stamps on Obesity  

Microsoft Academic Search

Poverty has historically been associated with a decrease in food consumption. This at least partially changed in 1964 when the Food Stamp Act began guaranteeing food for those in poverty. Since the act’s passage, the prevalence of obesity has increased dramatically, particularly among those with low incomes. This article examines the effects of the Food Stamp Program on the prevalence

Charles L. Baum

2011-01-01

93

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

94

Influence of Hot Press Forming Techniques on Properties of Vehicle High Strength Steels  

Microsoft Academic Search

Based on the combination of materials science and mechanical engineering, hot press forming process of the vehicle high strength steels was analyzed. The hot forming process included: heating alloys rapidly to austenite microstructures, stamping and cooling timely, maintaining pressure and quenching. The results showed that most of austenite microstructure was changed into uniform martensite by the hot press forming while

Ying CHANG; Zhao-huan MENG; Liang YING; Xiao-dong LI; Ning MA; Ping HU

2011-01-01

95

Multi-step stamping tools design method based on springback compensation  

Microsoft Academic Search

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

M. Azaouzi; G. Rauchs; S. Belouettar

2011-01-01

96

Impact of Simulation Technology on Die and Stamping Business  

Microsoft Academic Search

Over the last ten years, we have seen an explosion in the use of simulation-based techniques to improve the engineering, construction, and operation of GM production tools. The impact has been as profound as the overall switch to CAD\\/CAM from the old manual design and construction methods. The changeover to N\\/C machining from duplicating milling machines brought advances in accuracy

Mark W. Stevens

2005-01-01

97

Hot-pressed neodymium-iron-boron magnets  

Microsoft Academic Search

A new method is described which produces fully dense, well-aligned Nd-Fe-B magnets from rapidly quenched ribbons. Full density is achieved by hot pressing at ?15 kpsi in argon at 700 °C. A second hot press in a larger die cavity to allow deformation transverse to the press direction (die upsetting) introduces a preferred magnetization direction parallel to the press direction.

R. W. Lee

1985-01-01

98

Hot-pressed neodymium-iron-boron magnets  

Microsoft Academic Search

A new method is described which produces fully dense, well-aligned Nd-Fe-B magnets from rapidly quenched ribbons. Full density is achieved by hot pressing at approximately 15 kpsi in argon at 700 C. A second hot press in a larger die cavity to allow deformation transverse to the press direction (die upsetting) introduces a preferred magnetization direction parallel to the press

R. W. Lee

1985-01-01

99

FOOD STAMP BENEFITS AND CHILD POVERTY IN THE 1990s  

Microsoft Academic Search

In 2000, 8.8 million children received food stamps, making the Food Stamp Program a crucial component of the social safety net. Despite its importance, little research has examined the effect of food stamps on children's overall well-being. Using the Current Population Survey from 1989 to 2001, we consider the impact of food stamps on three measures of poverty - the

Dean Jolliffe; Laura Tiehen; Craig Gundersen; Joshua Winicki

2003-01-01

100

44. INTERIOR VIEW LOOKING NORTH NORTHWEST BEHIND THE STAMP BATTERIES. ...  

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

44. INTERIOR VIEW LOOKING NORTH NORTHWEST BEHIND THE STAMP BATTERIES. THIS IS A CLOSE UP VIEW OF THE STAMP SHAFTS WITH THE TAPPETS AND WOODEN STOPS THAT WERE USED TO PLACE THE STAMPS IN AN UP POSITION TO CLEAN OR REPLACE THE STAMP SHOES IN THE MORTAR BOX. - Standard Gold Mill, East of Bodie Creek, Northeast of Bodie, Bodie, Mono County, CA

101

Springback Prediction, Compensation and Correlation for Automotive Stamping  

SciTech Connect

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

2005-08-05

102

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

103

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

104

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

105

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

106

Sheet stamping processes: Experimental modelling overview.  

National Technical Information Service (NTIS)

The numerical simulation of metal forming processes, in particular, sheet stamping processes, is of great interest considering their importance in the optimization of industrial designs, e.g., designs of automotive 'particulars', by means of numerical sim...

A. Daneri S. Giambuzzi G. Toselli

1991-01-01

107

Pulse Magnetic Stamping (Impulsnaya Magnitnaya Shtampovka).  

National Technical Information Service (NTIS)

This article investigates pulse methods of treating materials by means of high energies. The author commences by stating the advantages and describing the development of pulse magnetic stamping. Formulas are derived for both electroinductive pulse magneti...

P. Y. Pytev

1967-01-01

108

Food Stamp Participation and Local Support.  

National Technical Information Service (NTIS)

Regression analysis was adopted to identify the extent of association between the level of participation in the Food Stamp Program in specified communities and the availability of local welfare services; local fiscal conditions; local levels of unemployme...

W. B. Epps

1981-01-01

109

Trends in material forming technology. [Stamping  

SciTech Connect

It is predicted that Detroit will turn increasingly to stamping as a way to make critical parts. Forming and joining of parts in space is being simulated on the ground. Superplastic forming is advancing worldwide.

Not Available

1980-01-01

110

The Stamp Test for Rock Drillability Classification.  

National Technical Information Service (NTIS)

This paper gives a brief description of the Stamp Test for rock drillability classification. Many circumstances in a drilling process interact in a complicated manner which makes it very difficult to construct a complete theoretical model of the process. ...

G. Wijk

1982-01-01

111

Forging and stamping nonferrous metals. Handbook  

SciTech Connect

Information on the chemical composition, the physical and mechanical properties, the thermomechanical parameters, and the processes of forging and stamping nonferrous metals is given. Aluminum, magnesium and titanium are among the metals discussed.

Korneyev, N.I.; Arzhakov, V.M.; Barmashenko, B.G.; Yemelyanov, V.B.; Kleymenov, V.Y.

1984-05-01

112

Trading in Trust, Tokens, and Stamps  

Microsoft Academic Search

Proposals for providing incentives to increase node participation in peer-to-peer systems can be broadly categorised into token-based and trust-based schemes. This paper aims to relate both models to a variant of stamp trading (6), where nodes produce personalised stamps then trade them to obtain service from each other. By combining features from both trust and token schemes, we present the

Tim Moreton; Andrew Twigg

2003-01-01

113

Time to pay attention: attentional performance time-stamped prefrontal cholinergic activation, diurnality and performance  

PubMed Central

Although the impairments in cognitive performance that result from shifting or disrupting daily rhythms have been demonstrated, the neuronal mechanisms that optimize fixed time daily performance are poorly understood. We previously demonstrated that daily practice of a sustained attention task (SAT) evokes a diurnal activity pattern in rats. Here we report that SAT practice at a fixed time produced practice time-stamped increases in prefrontal cholinergic neurotransmission that persisted after SAT practice was terminated and in a different environment. SAT time-stamped cholinergic activation occurred irrespective of whether the SAT was practiced during the light or dark phase or in constant light conditions. In contrast, prior daily practice of an operant schedule of reinforcement, albeit generating more rewards and lever presses per session than the SAT, neither activated the cholinergic system nor affected the animals' nocturnal activity pattern. Likewise, food-restricted animals exhibited strong food anticipatory activity (FAA) and attenuated activity during the dark period but FAA was not associated with increases in prefrontal cholinergic activity. Removal of cholinergic neurons impaired SAT performance and facilitated the reemergence of nocturnality. Shifting SAT practice away from a fixed time resulted in significantly lower performance. In conclusion, these experiments demonstrated that fixed time, daily practice of a task assessing attention generates a precisely practice time-stamped activation of the cortical cholinergic input system. Time-stamped cholinergic activation benefits fixed time performance and, if practiced during the light phase, contributes to a diurnal activity pattern.

Paolone, Giovanna; Lee, Theresa M.; Sarter, Martin

2012-01-01

114

Explaining state AFDC and food stamp caseloads: has welfare reform discouraged food stamp participation?  

Microsoft Academic Search

State food stamp caseloads have declined dramatically since the adoption of the 1996 welfare reforms. It is likely that the movement of large numbers of individuals from the welfare rolls to the work force has contributed significantly to the decline in food stamp usage. This hypothesis is tested by examining the impact that the pre-reform AFDC program had on food

Gary J. Tschoepe; John J. Hindera

2001-01-01

115

Improving Fairness and Accuracy in Food Stamp Fraud Investigations: Advocating Reform Under Food Stamp Regulations  

Microsoft Academic Search

Some state food stamp agencies are overly aggressive in pursuing charges that claimants have committed intentional program violations. Just as failure to pursue allegations of fraud can undermine the Food Stamp Program’s goals, so can intimidation of claimants. States should take care to follow appropriate procedures in their investigations, and Food and Nutrition Service regulations offer ample grounds to advocate

David A. Super

2005-01-01

116

Sensitivity Analysis of the Sheet Metal Stamping Processes Based on Inverse Finite Element Modeling and Monte Carlo Simulation  

SciTech Connect

Sheet metal stamping is one of the most commonly used manufacturing processes, and hence, much research has been carried for economic gain. Searching through the literatures, however, it is found that there are still a lots of problems unsolved. For example, it is well known that for a same press, same workpiece material, and same set of die, the product quality may vary owing to a number of factors, such as the inhomogeneous of the workpice material, the loading error, the lubrication, and etc. Presently, few seem able to predict the quality variation, not to mention what contribute to the quality variation. As a result, trial-and-error is still needed in the shop floor, causing additional cost and time delay. This paper introduces a new approach to predict the product quality variation and identify the sensitive design / process parameters. The new approach is based on a combination of inverse Finite Element Modeling (FEM) and Monte Carlo Simulation (more specifically, the Latin Hypercube Sampling (LHS) approach). With an acceptable accuracy, the inverse FEM (also called one-step FEM) requires much less computation load than that of the usual incremental FEM and hence, can be used to predict the quality variations under various conditions. LHS is a statistical method, through which the sensitivity analysis can be carried out. The result of the sensitivity analysis has clear physical meaning and can be used to optimize the die design and / or the process design. Two simulation examples are presented including drawing a rectangular box and drawing a two-step rectangular box.

Yu Maolin; Du, R. [Department of automation and compute-aided engineering, Chinese University of Hong Kong, Shatin, N. T., Hong Kong (China)

2005-08-05

117

Stamping of Thin-Walled Structural Components with Magnesium Alloy AZ31 Sheets  

SciTech Connect

In the present study, the stamping process for manufacturing cell phone cases with magnesium alloy AZ31 sheets was studied using both the experimental approach and the finite element analysis. In order to determine the proper forming temperature and set up a fracture criterion, tensile tests and forming limit tests were first conducted to obtain the mechanical behaviors of AZ31 sheets at various elevated temperatures. The mechanical properties of Z31 sheets obtained from the experiments were then adopted in the finite element analysis to investigate the effects of the process parameters on the formability of the stamping process of cell phone cases. The finite element simulation results revealed that both the fracture and wrinkle defects could not be eliminated at the same time by adjusting blank-holder force or blank size. A drawbead design was then performed using the finite element simulations to determine the size and the location of drawbead required to suppress the wrinkle defect. An optimum stamping process, including die geometry, forming temperature, and blank dimension, was then determined for manufacturing the cell phone cases. The finite element analysis was validated by the good agreement between the simulation results and the experimental data. It confirms that the cell phone cases can be produced with magnesium alloy AZ31 sheet by the stamping process at elevated temperatures.

Chen, F.-K.; Chang, C.-K. [Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan (China)

2005-08-05

118

RANKL induces heterogeneous DC-STAMP(lo) and DC-STAMP(hi) osteoclast precursors of which the DC-STAMP(lo) precursors are the master fusogens.  

PubMed

Osteoclasts (OC) are multinucleated bone resorbing cells that form via RANKL-induced fusion of heterogeneous mononuclear OC precursors (OCP). Currently, there are no unique surface markers to distinguish these OCP populations, which are diagnostic for erosive and metabolic bone diseases using culture assays. Thus, we investigated expression of DC-STAMP, a surface receptor required for OCP fusion, during osteoclastogenesis in vitro using a novel monoclonal antibody (1A2). Immunoprecipitation-Western blot analysis of OCP membrane proteins detected 106 kDa dimeric and 53 kDa monomeric DC-STAMP in non-denaturing and denaturing conditions, respectively, with greater sensitivity versus rabbit anti-sera (KR104). 1A2 also detected 99.9% of undifferentiated monocytes as a single population by flow cytometry with a MFI 100-fold over background, while KR104 was not useful in this assay. Functionally, 1A2 inhibited OCP fusion in vitro. RANKL stimulation of OCP induced DC-STAMP(lo) and DC-STAMP(hi) cells, which mature into OC and mononuclear cells respectively as determined by fluorescent microscopy and TRAP assays. Addition of DC-STAMP(hi) cells to purified DC-STAMP(lo) cultures produced larger, more nucleated OC vs. pure DC-STAMP(lo) cultures. RT-qPCR analysis of these two populations showed that OC markers (Trap and Oc-stamp) and fusogenic gene expression (Cd9 and Cd47), were significantly increased in DC-STAMP(lo) vs. DC-STAMP(hi) cells. Collectively, these results demonstrate that DC-STAMP is expressed on OCP as a dimer, which is efficiently detected by 1A2 via flow cytometry. RANKL induces osteoclastogenesis by stimulating DC-STAMP internalization in some OCP, and these DC-STAMP(lo) cells display the "master fusogen" phenotype. In contrast, DC-STAMP(hi) OCP can only act as mononuclear donors. PMID:20039274

Mensah, Kofi A; Ritchlin, Christopher T; Schwarz, Edward M

2010-04-01

119

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

120

Food Insufficiency, Food Stamp Participation, and Mental Health  

Microsoft Academic Search

This study examines whether the mental health consequences associated with food insufficiency vary by food stamp participation status and\\/or the value of the food stamp benefit received. Copyright (c) 2008 by the Southwestern Social Science Association.

Colleen M. Heflin; James P. Ziliak

2008-01-01

121

27 CFR 479.163 - Reuse of stamps prohibited.  

Code of Federal Regulations, 2011 CFR

...and 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

122

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

123

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

124

An investigation of the blanking process of the quenchable boron alloyed steel 22MnB5 before and after hot stamping process  

Microsoft Academic Search

Recently, one of the most important issues in the automotive industry is lightweight construction. While maintaining safety standards, the fuel consumption can be decreased by reducing the weight of the vehicle. To manufacture lightweight vehicle components with high strength, hot stamping with quenchable boron steels is becoming more common in automotive industries. However, the high strength achieved in the press-hardened

Hyunwoo So; Dennis Faßmann; Hartmut Hoffmann; Roland Golle; Mirko Schaper

125

Study on the Security of Time-Stamping Service Architecture  

Microsoft Academic Search

NTSC and Uni-trust are constructing the public time-stamping service platform of China. In this paper, we present the architecture of Time-Stamping service and analyze the threats are encountered in each time-stamping system. Then we propose a modified architecture for overcoming these threats. This architecture is relies on a secure time service to obtain a authentic time stamp from the Time

Song Ke xin

2009-01-01

126

Directionally controlled transfer printing using micropatterned stamps  

NASA Astrophysics Data System (ADS)

Kinetically controlled transfer printing based on rate-dependent adhesion is widely used to heterogeneously integrate micro/nano-devices. Through analysis of peeling stamps with grating-like micropatterns from the rigid substrate in different directions, the directionally dependent adhesion strength is investigated in detail. Experiments of peel test and picking up silicon ribbons from silicon-on-insulator wafer were conducted and consistent with the analytical prediction. The method and analytical results proposed in this Letter can guide the design of the micropatterns on stamp to realize a more effective transfer printing approach.

Chen, Hang; Feng, Xue; Chen, Ying

2013-10-01

127

THE EFFECT OF FOOD STAMPS ON SPENDING FOR GROCERY PRODUCTS  

Microsoft Academic Search

We constructed demographic profiles of each market area by aggregating circa-1990 county US census data. We constructed a measure for market level food stamp benefits using 1990 county-level food stamp benefit data supplied by the USDA. This is the key explanatory variable in regressions in which sales of many specific foods and food aggregates are regressed on food stamp benefits

James K. Binkley; James S. Eales

2002-01-01

128

Do food stamps cause obesity? Evidence from immigrant experience  

Microsoft Academic Search

I use changes in immigrant eligibility for food stamps under the 1996 federal law and heterogeneous state responses to set up a natural experiment research design to study the effect of food stamps on Body Mass Index (BMI) of adults in immigrant families. I find that in the post-1996 period food stamps use by foreign-born unmarried mothers with a high

Neeraj Kaushal

2006-01-01

129

Do Food Stamps Cause Obesity? Evidence from Immigrant Experience  

Microsoft Academic Search

I use changes in immigrant eligibility for food stamps under the 1996 federal law and heterogeneous state responses to set up a natural experiment research design to study the effect of food stamps on Body Mass Index (BMI) of adults in immigrant families. I find that in the post-1996 period food stamps use by foreign-born unmarried mothers with a high

Neeraj Kaushal

2007-01-01

130

Finite element analysis of a tailored blanks stamping process  

Microsoft Academic Search

This paper describes the computer simulation methodology for applying the method of finite elements in the sheet stamping of a new type of sheet. Simulation of the cup stamping process by a punch of square section has been chosen for testing. The modelling of such a stamping process was carried out using a complete thermomechanical analysis including the modelling of

Z Zimniak; A Piela

2000-01-01

131

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

132

Postage stamps: A convergence of metallurgy, art, and history  

NASA Astrophysics Data System (ADS)

Postage stamps have been used around the world to commemorate, in miniature, significant events and people, including those of importance in the history of metals and mineral production. From the presence of gold artifacts in an ancient Egyptian tomb to the role of uranium in nuclear power, stamps have captured the evolution of metallurgical processes. This article highlights some of those stamps.

Habashi, Fathi

2002-04-01

133

"Duck stamp" dollars reserve native prairie tracts  

USGS Publications Warehouse

Ducks and wetlands are inseparable in the prairies. Hunters know this, bird watchers know this, wildlife managers know this, and most importantly people who manage the croplands and rangelands know this. The 1,746 tracts of native prairie within these upland-wetland complexes known as Waterfowl Production Areas are not the only lands purchased with "duck stamp" dollars. Considerable acreages have also been purchased in central and southern parts of the United States to provide staging, resting, and wintering areas for waterfowl. Since 1934, when "duck stamps" were first sold, nearly 2.5 million acres of waterfowl habitats have been acquired or taken under easement within the United States with revenue from these sales. By purchasing "duck stamps", more than 2.2 million people provide over $16.5 million in annual revenue. It is certainly gratifying to know that some of the remaining native prairie remnants in the Northern Great Plains are being reserved for the future with "duck stamp" dollars.

Higgins, K. F.

1981-01-01

134

49 CFR 179.200-24 - Stamping.  

Code of Federal Regulations, 2011 CFR

...original test 00-0000 Car assembler (if other than tank builder) DEF (b) On Class DOT-111 tank cars, the last numeral of the specification number may be omitted from the stamping; for example, DOT-111A100W. [29 FR 18995, Dec....

2011-10-01

135

49 CFR 179.400-24 - Stamping.  

Code of Federal Regulations, 2012 CFR

...information plainly and permanently stamped into the metal near the center of the head of the outer jacket at...specified markings may be incorporated on a data plate of corrosion-resistant metal, fillet welded in place on the head of the...

2012-10-01

136

49 CFR 179.400-24 - Stamping.  

Code of Federal Regulations, 2011 CFR

...information plainly and permanently stamped into the metal near the center of the head of the outer jacket at...specified markings may be incorporated on a data plate of corrosion-resistant metal, fillet welded in place on the head of the...

2011-10-01

137

VISUALIZING FINLAND: POSTAGE STAMPS AS POLITICAL MESSENGERS  

Microsoft Academic Search

Postage slumps are ;t very ptililiLal, territorially iirDundcd anil yet overlooked pan ot visual cullurc. We argue that (he THundanc omnipresence of stamps gives them considerable na- tion-building power and makes them exemplary totils of what Michael Billii! ealls 'banal natlnnalism.\\

Pauliina Raento; Statiley D. Brunn

2005-01-01

138

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

139

Funding the Prosecution of Food Stamp Fraud.  

National Technical Information Service (NTIS)

To curtail fraud in the Food Stamp Program, the Food and Nutrition Service (FNS) will reimburse states for 75 percent of the costs of fraud investigation and prosecution. Many fraud investigation units have taken advantage of this funding, but few prosecu...

1983-01-01

140

A stamped PEDOT:PSS-silicon nanowire hybrid solar cell.  

PubMed

A novel stamped hybrid solar cell was proposed using the stamping transfer technique by stamping an active PEDOT:PSS thin layer onto the top of silicon nanowires (SiNWs). Compared to a bulk-type counterpart that fully embeds SiNWs inside PEDOT:PSS, an increase in the photovoltaic efficiency was observed by a factor of ?4.6, along with improvements in both electrical and optical responses for the stamped hybrid cell. Such improvements for hybrid cells was due to the formation of well-connected and linearly aligned active PEDOT:PSS channels at the top ends of the nanowires after the stamping process. These stamped channels facilitated not only to improve the charge transport, light absorption, but also to decrease the free carriers as well as exciton recombination losses for stamped hybrid solar cells. PMID:22433819

Moiz, Syed Abdul; Nahhas, Ahmed Muhammad; Um, Han-Don; Jee, Sang-Won; Cho, Hyung Koun; Kim, Sang-Woo; Lee, Jung-Ho

2012-03-21

141

A stamped PEDOT:PSS-silicon nanowire hybrid solar cell  

NASA Astrophysics Data System (ADS)

A novel stamped hybrid solar cell was proposed using the stamping transfer technique by stamping an active PEDOT:PSS thin layer onto the top of silicon nanowires (SiNWs). Compared to a bulk-type counterpart that fully embeds SiNWs inside PEDOT:PSS, an increase in the photovoltaic efficiency was observed by a factor of ˜4.6, along with improvements in both electrical and optical responses for the stamped hybrid cell. Such improvements for hybrid cells was due to the formation of well-connected and linearly aligned active PEDOT:PSS channels at the top ends of the nanowires after the stamping process. These stamped channels facilitated not only to improve the charge transport, light absorption, but also to decrease the free carriers as well as exciton recombination losses for stamped hybrid solar cells.

Moiz, Syed Abdul; Nahhas, Ahmed Muhammad; Um, Han-Don; Jee, Sang-Won; Koun Cho, Hyung; Kim, Sang-Woo; Lee, Jung-Ho

2012-04-01

142

Smithsonian National Postal Museum Art of the Stamp  

NSDL National Science Digital Library

The Art of the Stamp online exhibit presented by the National Postal Museum is designed to complement the exhibit on display at the Museum itself in Washington, DC. The online exhibit begins with a brief description of how subjects and themes for postage are suggested, and then continues to discuss the timeline for developing a stamp, which often can take two years or longer. The main material on the site is divided into various categories, such as American History, Stamps with a Story, and Love. For each stamp, visitors can learn about the artist who created each design, along with information about the first day of issue. The Stamps with a Story section is rather engaging, containing stories about the creation of the Bugs Bunny stamp (visitors can take a look at some of the more irreverent designs considered) and of course the famous Elvis Presley stamp, which was first issued on January 8, 1993.

143

Die Klavierspielerin  

Microsoft Academic Search

Die Klavierlehrerin Erika Kohut (in der Folge als „Erika“ bezeichnet), Alter Ende dreißig, kommt abends — offensichtlich später\\u000a als gewohnt — nach Hause in die Wohnung, die sie mit ihrer Mutter teilt. Diese stellt sie wegen des Spätkommens zur Rede.\\u000a Die Begründung der Tochter, sie sei spazieren gegangen, als Ausrede erlebend, entreißt die Mutter ihr die Handtasche durchsucht\\u000a diese, findet

Marianne Springer-Kremser; Peter Schuster

144

An Optimization Study of Hot Stamping Operation  

NASA Astrophysics Data System (ADS)

In the present study, 3-dimensional finite element analyses for hot-stamping processes of Audi B-pillar product are conducted using JSTAMP/NV and HEEDS. Special attention is paid to the optimization of simulation technology coupling with thermal-mechanical formulations. Numerical simulation based on FEM technology and optimization design using the hybrid adaptive SHERPA algorithm are applied to hot stamping operation to improve productivity. The robustness of the SHERPA algorithm is found through the results of the benchmark example. The SHERPA algorithm is shown to be far superior to the GA (Genetic Algorithm) in terms of efficiency, whose calculation time is about 7 times faster than that of the GA. The SHERPA algorithm could show high performance in a large scale problem having complicated design space and long calculation time.

Ghoo, Bonyoung; Umezu, Yasuyoshi; Watanabe, Yuko; Ma, Ninshu; Averill, Ron

2010-06-01

145

Effect of Grain Size and Die-Upset Temperature on Texture in Die-Upset Nd-Fe-B Magnet  

Microsoft Academic Search

Hot-pressed Nd13.5Fe77Si1B8 alloy compacts with various grain sizes ranging from approximately 50 nm to 200 nm were prepared using melt-spun material. The compacts were then subjected to die-upsetting. The effect of grain size in the hot-pressed compact on the texture in die-upset magnet was investigated. The effect of die-upset temperature on the texture in die-upset magnet was also investigated. Texture

Hae-woong Kwon; Y. S. Kang; G. S. Choi; J. H. Yu

2009-01-01

146

Reduced Oxygen Contributed To ?Great Dying?  

NSF Publications Database

... Press Release 05-058Reduced Oxygen Contributed To ?Great Dying? Oxygen deficiency could also ... atmospheric oxygen decreased in the late Permian period, hypoxia, or insufficient oxygen in bodily ...

147

On the Determination of the Blank Shape Contour for Thin Precision Parts Obtained by Stamping  

SciTech Connect

The present study deals with the 'automatic' determination of the initial blank shape contour for 3D thin metallic precision parts obtained by stamping, knowing the 3D CAD geometry of the final part (the desired product). The forming process can involve several steps presented in this paper that consists in applying a heuristic method of optimization to find out the initial blank shape of thin precision metallic part in order to obtain a final part, with a required 3D geometry (specified). The purpose of the present approach is to replace the experimental trial and error optimization method used currently, which is expensive and time consuming. The principle of the 'heuristic' optimization method is to first estimate the blank shape using the Inverse Approach, then to compensate the shape error calculated in each node of the blank contour. The 'heuristic' optimization loop is done using a precise incremental code (Abaqus Explicit or Stampack) and, the iterations loop is stopped when the shape errors are within some initially fixed tolerances. The method is tested in the case of a special stamping process where the parts are pressed in one or more steps using a manual press, without blank holder and by the mean of tools having complex shape. The sensitivities of the process parameters regarding the optimal solution are investigated.

Azaouzi, M. [ERMeP, Institut Superieur d'Ingenierie de la Conception (GIP-InSIC), 27, Rue d'Hellieule, 88100 Saint-Die-des-Vosges (France); Centre de Recherche Henri Tudor, Laboratoire de Technologies Industrielles, 70, Rue de Luxembourg, L-4221 Esch-sur-Alzette (Luxembourg); Delameziere, A. [ERMeP, Institut Superieur d'Ingenierie de la Conception (GIP-InSIC), 27, Rue d'Hellieule, 88100 Saint-Die-des-Vosges (France); Naceur, H.; Batoz, J. L. [Lab. Roberval, Universite de Technologie de Compiegne, BP 20529-60205, Compiegne (France); Sibaud, D. [Gottschol Alcuilux S.A, Z.I Op der Sang 18, L 9779 Eselborn (Luxembourg); Belouettar, S. [Centre de Recherche Henri Tudor, Laboratoire de Technologies Industrielles, 70, Rue de Luxembourg, L-4221 Esch-sur-Alzette (Luxembourg)

2007-05-17

148

Research of knowledge-based system for stamping process planning  

Microsoft Academic Search

This paper gives a brief introduction to establishing a knowledge-based system for intelligent stamping process planning.\\u000a Studies on the system’s framework, knowledge model and reasoning mode are introduced. Some key technologies such as the feasibility\\u000a of the stamping process, an optimal algorithm for blank layout, intelligent strip layout and force calculation are researched.\\u000a The efficiency of stamping process planning can

Yu Dequan; Zhang Rui; Chen Jun; Zhao Zhen

2006-01-01

149

Bounded concurrrent time-stamp systems are constructible  

Microsoft Academic Search

Concurrent time stamping is at the heart of solutions to some of the most fundamental problems in distributed computing. Based on concurrent-time-stamp-systems, elegant and simple solutions to core problems such as ƒcƒs-mutual-exclusion, construction of a multi-reader-multi-writer atomic register, probabilistic consensus,… were developed. Unfortunately, the only known implementation of a concurrent time stamp system has been theoretically unsatisfying, since it requires

Danny Dolev; Nir Shavit

1989-01-01

150

Die Casting.  

National Technical Information Service (NTIS)

Contents: Mechanical properties of creep resistant zinc die casting alloys; Studies on a gravity die cast zinc base alloy; Parashot system for turbulence-free injection of metal; Zinc--the versatile metal; Prevention of metal dribble on hot chamber die ca...

1977-01-01

151

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

152

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...

2009-10-01

153

Fatality Assessment and Control Evaluation (FACE) Report for Iowa: Female Machine Operator Killed When Working on a Punch Press.  

National Technical Information Service (NTIS)

A 43-year-old female machine operator died while operating a punch press on June 25, 1998. When the punch press operates, small sections of the metal sheet, called knockout, slugs, or scrap, drop below the press and accumulated on the die bed directly bel...

1999-01-01

154

AN ew Chronology for the Ceramic Stamps of Herakleia Pontike  

Microsoft Academic Search

Among the ceramic stamps from excavations of various Greek sites on the Pontic littoral, the most numerous are those from Herakleia, Sinope and Chersonesos - the three Black Sea centres in which extensive and systemat- ic stamping of ceramic containers and roof tiles was practised during the late Classical and Hellenistic periods. At present we have at our disposal fairly

Vladimir I. Kac

155

Proposal model for automated stamping process using cylindrical parts  

Microsoft Academic Search

The generation of the stamping process is often based on the experiments and the knowledge of specialists in this field. However the development of a coherent system which able to generate a stamping process of the cylindrical parts that requires a great knowledge of the difficulties of sheet metal working processes. Such as wrinkling, fractures, geometrical defects, etc. In this

F. Abbassi; N. B. Yahia; A. Zghal

2004-01-01

156

Numerical simulation of protein stamping process driven by capillary force  

Microsoft Academic Search

Numerical simulations based on first-principle conservation laws of mass and momentum are performed to observe flow characteristics during the stamping process. The protein solution is transferred by a new design of microstamps with microchannels and printed on a bottom substrate. Furthermore, key physics of the stamping process and the control factors achieving uniform spot size can be identified and optimized

Shih-Chang Lin; Fangang Tseng; Ching-Chang Chieng

2002-01-01

157

Hidden Markov Model based fault diagnosis for stamping processes  

Microsoft Academic Search

Metal stamping process plays a very important role in the modern manufacturing industry. Owing to an ever-increasing demand for better quality at reduced cost, a practical on-line monitoring and diagnosis system is of much appeal. However, the stamping process is a complicated transient process involving a large number of variables. It is rather difficult to monitor and diagnose by classical

M. Ge; R. Du; Y. Xu

2004-01-01

158

Stamping process design using FEA in conjunction with orthogonal regression  

Microsoft Academic Search

A process design technique is presented for the formability assessment of sheet metal stamping parts and feasibility analysis of process conditions. The proposed approach is based on numerical simulation of stamping processes by using explicit – incremental and implicit – iterative finite element techniques. The influence of the numeric model parameters are investigated with factor analysis and described with response

Mehmet Firat; Osman H. Mete; Umit Kocabicak; Murat Ozsoy

2010-01-01

159

The Stamp Act in Georgia, 1765-1766.  

ERIC Educational Resources Information Center

Effects of the Stamp Act in the Colony of Georgia in 1765 are explored. The pamphlet is one in a series of materials about the American Revolution in Georgia. Designed for junior and senior high school students, it can be used as supplementary reading or a short unit. A teacher's guide is included. The Stamp Act was levied by Britain to force the…

Cook, James F.

160

Economies of Scale in the Food Stamp Program.  

National Technical Information Service (NTIS)

The Food Stamp Act of 1977 requires that Food Stamp benefits be adjusted for household size and that the adjustment 'take into account economies of scale.' The report reviews both the concepts and the substantial body of research on establishing economy o...

L. Nelson H. Beebout F. Skidmore

1985-01-01

161

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

162

19. DETAIL OF STAMP BATTERY AUTOMATIC FEEDER, LOOKING EAST. THIS ...  

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

19. DETAIL OF STAMP BATTERY AUTOMATIC FEEDER, LOOKING EAST. THIS IS THE MIDDLE OF THREE FEEDERS, ONE FOR EACH STAMP BATTERY. THE CHUTE (UPPER RIGHT) INTRODUCED THE CRUSHED ORE FROM THE ORE BIN. FLOW WAS CONTROLLED BY A SLIDING DOOR ON THE UPPER LEVEL. - Skidoo Mine, Park Route 38 (Skidoo Road), Death Valley Junction, Inyo County, CA

163

FOOD STAMPS FOR WORKING FAMILIES: ISSUES AND OPTIONS  

Microsoft Academic Search

ACKNOWLEDGMENTS The Food Stamps for Working Families: Issues and Options report was written and prepared by Louise Hayes. Assistance and review were provided by Ellen Vollinger and Jim Weill. The Food Research and Action Center gratefully acknowledges the generous support of the following for our work on the Food Stamp Program and working families: Annie E. Casey Foundation General Mills

Louise Hayes

2002-01-01

164

Stamp Duties In Indian States: A Case for Reform  

Microsoft Academic Search

Alm, Annez, and Modi review the options for reform of stamp duties on immovable property transfers collected by Indian state governments. After briefly reviewing some of the many administrative difficulties experienced with the tax, they turn to an examination of its economic impacts. A review of stamp duties internationally indicates that Indian rates are exceptionally high, at rates often above

Arbind Modi; Patricia Annez; James Alm

2004-01-01

165

Numerical simulation of hot stamping of quenchable boron steel  

Microsoft Academic Search

Quenchable boron steel is a new type of ultra-high-strength steel used for automotive parts to reduce the weight of automobiles and maintain the safety requirements. On the basis of experimental data of mechanics and thermal physical properties, a material model under hot stamping condition of quenchable steel was set up, and the numerical simulation to the whole hot stamping process

Z. W. Xing; J. Bao; Y. Y. Yang

2009-01-01

166

Food Stamp Program: Various Factors Have Led to Declining Participation.  

National Technical Information Service (NTIS)

Because of concerns that states efforts to reduce their welfare caseloads may have diminished eligible childrens participation in the Food Stamp Program,the GAO was asked to examine (1) the reasons for the recent drop in food stamp participation and (2) a...

1999-01-01

167

Auto Body Stamping Robust Design Approach and Application  

NASA Astrophysics Data System (ADS)

The uncertainties in the auto body stamping process affect the stamping quality significantly. The current stamping simulation and optimization may lead to design failure without considering these uncertainties. A systematic stamping robust design approach is proposed. The variation behavior of the local auto sheet properties is analyzed, and the parameters are obtained. A stochastic analysis method is developed, where FE-simulation, uniform design, response surface methodology (RSM) and Monte-Carlo simulation are used. The robust optimization model composed of mean and standard deviation is constructed and solved. The proposed approach is verified through feature box and deck lid inner panel forming process. The developed approach offers rapid and reliable results for engineers to deal with potential stamping problems during the early phase of product and tooling design, saving more time and resources.

Zhong-Qin, Lin; Bo, Hou; Shu-Hui, Li; Zhong-Qi, Yu; Yi-Xi, Zhao

2011-08-01

168

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

169

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

170

Die Energiespeicherung  

Microsoft Academic Search

\\u000a Wir haben uns daran gewöhnt, dass die für unser tägliches Leben notwendige Endenergie immer und ohne Beschränkungen zur Verfügung steht, also zu jedem Zeitpunkt und in der Menge vorhanden ist, die wir benötigen.\\u000a Dass dem so ist, liegt daran, dass die fossilen Energieträger, auf denen unsere Energieversorgung jetzt noch basiert, einen\\u000a enorm großen Energiespeicher bilden, einen Speicher für chemische Energie.

Dietrich Pelte

171

Influence of channel angle on the development of ultrafine grains in equal-channel angular pressing  

Microsoft Academic Search

Equal-channel angular pressing provides a convenient procedure for introducing an ultrafine grain size into a material. Using samples of pure Al, tests were conducted to determine the influence of the channel angle ?, defined as the angle of intersection of the two channels within the die, on the subsequent microstructure attained by pressing. Experiments were performed using dies having channel

Kiyotaka Nakashima; Zenji Horita; Minoru Nemoto; Terence G. Langdon

1998-01-01

172

Barriers to Using Urban Farmers' Markets: An Investigation of Food Stamp Clients' Perceptions  

Microsoft Academic Search

This paper explores the challenges farmers' markets face in attracting and retaining food stamp customers. Farmers' markets around the country have invested in technology and programs to accept electronic food stamps (EBT). Many of those markets are struggling to build a base of food stamp clients. We used Portland, Oregon as a case study to examine food stamp clients' perceptions

Christina Grace; Thomas Grace; Nancy Becker; Judy Lyden

2007-01-01

173

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

174

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. A WATER SHAFT IS COVERED WITH A PROTECTIVE NET IN THE LOWER RIGHT. - Keane Wonder Mine, Park Route 4 (Daylight Pass Cutoff), Death Valley Junction, Inyo County, CA

175

Thermomechanical Processing of Stampings of VT14 Alloy.  

National Technical Information Service (NTIS)

The purpose of this report was to explain the possibility of obtaining stable properties of goods from the VT14 alloy, prepared under conditions of series manufacture by thermomechanical processing. The use of thermomechanical processing with hot stamping...

I. N. Kaganovich Y. I. Potapenko E. D. Igumenshchev

1966-01-01

176

The Food Stamp Program: A Review of Selected Economic Studies.  

National Technical Information Service (NTIS)

The Food Stamp Program was made part of permanent legislation in 1964. Studies of the economic impact of the program have been conducted by scientists in government, universities, and private research agencies. Since the program is relatively new, the exi...

1978-01-01

177

171. Photocopied July 1978. (QMC) VIEW LOOKING NORTH OF STAMP ...  

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

171. Photocopied July 1978. (QMC) VIEW LOOKING NORTH OF STAMP MILL, SHOWING CARPENTER SHOP, BLACKSMITH SHOP, AND RESIDENCES AT BUNKER HILL. C. 1890. - Quincy Mining Company, Hancock, Houghton County, MI

178

Detail of brace connection nut and stamped locknut, looking at ...  

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

Detail of brace connection nut and stamped locknut, looking at southwest tower leg. - Western Union Telegraph Company, Jennerstown Relay, Laurel Summit Road off U.S. 30, Laughlintown, Westmoreland County, PA

179

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

180

27 CFR 479.161 - National Firearms Act stamps.  

Code of Federal Regulations, 2011 CFR

...and 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...

2011-04-01

181

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

182

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

183

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

184

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

185

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

186

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

187

Experimental study of heat transfer in hot stamping process  

Microsoft Academic Search

Hot stamping and quenching of boron steel is a novel technology to produce structural automotive parts with an excellent crash\\u000a performance. It offers the opportunity to produce thinner parts with complex shapes and higher mechanical properties. In order\\u000a to increase the simulation expertise of the hot stamping process,, an experimental device has been designed and developed\\u000a to accurately measure the

B. Abdulhay; B. Bourouga; C. Dessain; G. Brun; J. Wilsius

2009-01-01

188

Numerical simulation of protein stamping process driven by capillary force.  

PubMed

Numerical simulations based on first-principle conservation laws of mass and momentum are performed to observe flow characteristics during the stamping process. The protein solution is transferred by a new design of microstamps with microchannels and printed on a bottom substrate. Furthermore, key physics of the stamping process and the control factors achieving uniform spot size can be identified and optimized after these simulations. PMID:16696302

Lin, Shih-Chang; Tseng, Fangang; Chieng, Ching-Chang

2002-09-01

189

Tooling-integrated sensing systems for stamping process monitoring  

Microsoft Academic Search

In-situ stamping process monitoring plays a critical role in enhancing productivity and ensuring part quality in sheet metal stamping. This paper investigates the realization of two sensing methods to create a tooling-integrated sensing system: mutual inductance-based displacement measurement for sheet draw-in, and distributed contact pressure measurement at the tool–workpiece interface. The two sensing systems are complementary in nature, and together,

Numpon Mahayotsanun; Sripati Sah; Jian Cao; Michael Peshkin; Robert X. Gao; Chuan-tao Wang

2009-01-01

190

Additive patterning of conductors and superconductors by solution stamping nanolithography.  

SciTech Connect

Solution stamping nanolithography (SSNL) was used to print patterns of metallic copper and high-temperature-superconducting YBa{sub 2}Cu{sub 3}O{sub 7}. SSNL combines soft lithography and chemical-solution deposition to achieve direct printing of inorganic materials. The size of the printed patterns is determined by both the stamp feature size and the wetting properties of the solution.

Chang, Nolanne Arlette; Clem, Paul Gilbert; Richardson, Jacob J.; Hsu, Julia W. P.

2005-08-01

191

Effective Press Releases  

Microsoft Academic Search

Stresses the importance of the effective management of the release of information to the media and the development of media relations. Considers reasons for good and bad press. Advises on the presentation of press releases, the elements of their content and their structure. Looks at how additional information should be supplied, and how photographs can be used to illustrate a

Linda S. Ashcroft

1994-01-01

192

High School Press Freedom.  

ERIC Educational Resources Information Center

|This report focuses on controversial articles written by the high school press, decisions made by the courts regarding students' press freedoms, and reactions to the articles and rulings. Particular attention is given to two rulings concerning censorship of articles about students' sexual atttiudes and activities, the issue of prior restraint of…

Maurer, Diana J.

193

The Prison Press.  

ERIC Educational Resources Information Center

|The prison press in the United States operates under varying degrees of First Amendment freedom. Court decisions have been varied, and have not resolved whether convicts can produce or receive publications without censorship by prison officials. Until about 1970, censorship of the prison press was rarely challenged. Most newspapers and magazines…

Hausman, John

194

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

195

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

196

Low Loss Polymer Optical Waveguide Replicated from Flexible Film Stamp Made of Polymeric Material  

NASA Astrophysics Data System (ADS)

This paper describes a flexible stamping method, which employs a flexible film stamp made of polymeric materials. Unlike conventional hard stamps, the flexible film stamp does not require either the stamp or its substrate to be perfectly flat, which means large area stamping is easy to achieve at reduced cost. We confirmed this by replicating 50 ?m square multi-mode optical polymer waveguides. The propagation loss of the waveguide is only 0.06 dB/cm at a wavelength of 850 nm, which satisfies the basic requirement for optical circuit boards, and the waveguide was used to fabricate a flexible optical circuit board with mechanically transferable (MT) connectors.

Kobayashi, Junya; Yagi, Shogo; Hatakeyama, Yutaka; Kawakami, Naomi

2013-07-01

197

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

198

Die Face Engineering based Springback Compensation Strategy and Implementation  

SciTech Connect

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 Chinchun [Engineering Technology Associates, Inc., Troy, Michigan (United States)

2005-08-05

199

45 CFR 205.25 - Eligibility of supplemental security income beneficiaries for food stamps or surplus commodities.  

Code of Federal Regulations, 2011 CFR

...income beneficiaries for food stamps or surplus commodities. 205.25 Section 205...income beneficiaries for food stamps or surplus commodities. (a) In respect to...established by the Food Stamp Act of 1964 or surplus commodities distribution programs...

2011-10-01

200

45 CFR 205.25 - Eligibility of supplemental security income beneficiaries for food stamps or surplus commodities.  

Code of Federal Regulations, 2012 CFR

...income beneficiaries for food stamps or surplus commodities. 205.25 Section 205...income beneficiaries for food stamps or surplus commodities. (a) In respect to...established by the Food Stamp Act of 1964 or surplus commodities distribution programs...

2012-10-01

201

Feasibility of automated quality control for stamp manufacturing  

NASA Astrophysics Data System (ADS)

The United States Postal Service (USPS) desires quality inspection systems for the stamp manufacturing process to cover printing, finishing, and packaging activities. More than 50 billion stamps are printed in the U.S. annually by gravure, offset, and/or intaglio methods. Errors in stamp production waste resources and affect the cost of a stamp product. Typically, the printing industry has relied on human inspection, but speeds are becoming too high and work too tedious to support 100% inspection. It is clear that automated inspection is needed, but an assessment of the resolution and data rates was required before concept designs could be developed. An intensive research program was undertaken for the USPS to evaluate the feasibility of 100% inspection of postal stamp products and the potential for in-process quality control. Printing, finishing, and packaging preparations were examined to determine inspection requirements, identifying opportunities for inspection and process control, and determining commercial vendor capabilities that meet these requirements. The individual manufacturing problem areas, and some possible solutions, are identified.

Blaha, James R.; Oleksy, Jerome E.; Chen, Penny; Choi, James H.

1993-06-01

202

Digital time stamping system based on open source technologies.  

PubMed

A digital time stamping system based on open source technologies (LINUX-UBUNTU, OpenTSA, OpenSSL, MySQL) is described in detail, including all important testing results. The system, called BALTICTIME, was developed under a project sponsored by the European Commission under the Program FP 6. It was designed to meet the requirements posed to the systems of legal and accountable time stamping and to be applicable to the hardware commonly used by the national time metrology laboratories. The BALTICTIME system is intended for the use of governmental and other institutions as well as personal bodies. Testing results demonstrate that the time stamps issued to the user by BALTICTIME and saved in BALTICTIME's archives (which implies that the time stamps are accountable) meet all the regulatory requirements. Moreover, the BALTICTIME in its present implementation is able to issue more than 10 digital time stamps per second. The system can be enhanced if needed. The test version of the BALTICTIME service is free and available at http://baltictime. pfi.lt:8080/btws/ and http://baltictime.lnmc.lv:8080/btws/. PMID:20211793

Miskinis, Rimantas; Smirnov, Dmitrij; Urba, Emilis; Burokas, Andrius; Malysko, Bogdan; Laud, Peeter; Zuliani, Francesco

2010-03-01

203

Rod Press Fruit Harvester.  

National Technical Information Service (NTIS)

This invention relates to an apparatus for removing or harvesting fruit and more particularly to an apparatus that will harvest fruit especially from narrow fruit growing canopies by pressing the fruit out of the production canopy.

D. L. Peterson

1982-01-01

204

A School Press Notebook  

ERIC Educational Resources Information Center

|Discusses the following topics related to student publications: recent instances of censorship of student publications by student government, items seen and liked in the student press, and a well-planned front page from a college newspaper. (GW)|

Ward, Bill

1977-01-01

205

Trashing the Press.  

ERIC Educational Resources Information Center

|Discusses ominous assaults on press freedom on college campuses across the United States. Laments the lack of concern about First Amendment issues involved in these incidents, in which student newspapers have been stolen, trashed, and burned. (SR)|

McMasters, Paul

1994-01-01

206

Impact of the Provisions of the Food Stamp Act of 1977.  

National Technical Information Service (NTIS)

The Food Stamp Act of 1977 mandated significant changes in the Food Stamp Program. The legislation imposed stricter eligibility standards and other changes designed to reduce the eligible population, while encouraging participation by the most needy by el...

J. E. Allen K. A. Longen

1980-01-01

207

Alternative approach to transparent stamps for UV-based nanoimprint lithography: techniques and materials  

NASA Astrophysics Data System (ADS)

The motivation for the presented research was the known issue of very expansive UV transparent stamps and moulds, which are necessary tools for UV-based patterning methods such as UV-based nanoimprint lithography, which has been developing as an attractive alternative lithography approach in recent 10 years. Low priced polymer working stamps could be an alternative to quartz as stamp material. UV transparent nanoimprint stamps were fabricated from sol-gel process-derived hybrid polymer, which has the benefit of high thermal, chemical and UV radiation stability. Tailored surface treatment and release agents were applied to ease the de-moulding process and secure the accuracy and fidelity of the transferred patterns. To increase the life time of the hybrid polymer nanoimprint stamps some adhesives between stamp substrate and the stamp material were used. The hybrid polymer stamps are compatible with NIL polymers and long-term stable even at elevated temperatures of thermal imprint processes.

Klukowska, Anna; Vogler, Marko; Kolander, Anett; Reuther, Freimut; Gruetzner, Gabi; Muehlberger, Michael; Bergmair, Iris; Schoeftner, Rainer

2008-04-01

208

75 FR 15740 - Valentine Tool and Stamping, Inc.: Norton, MA; Notice of Termination of Investigation  

Federal Register 2010, 2011, 2012, 2013

...Employment and Training Administration [TA-W-71,731] Valentine Tool and Stamping, Inc.: Norton, MA; Notice of Termination of...filed by a company official on behalf of workers of Valentine Tool and Stamping, Inc., Norton, Massachusetts. The...

2010-03-30

209

75 FR 11937 - General Motors Company, Lordstown Stamping Plant, Warren, OH; Notice of Termination of Investigation  

Federal Register 2010, 2011, 2012, 2013

...and Training Administration [TA-W-72,420] General Motors Company, Lordstown Stamping Plant, Warren, OH...Workers of America, Local 1714 on behalf of workers of General Motors Company, Lordstown Stamping Plant, Warren,...

2010-03-12

210

27 CFR 46.118 - Certificate in lieu of lost or destroyed special tax stamp.  

Code of Federal Regulations, 2013 CFR

...of lost or destroyed special tax stamp. 46.118 Section...Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT...RELATING TO TOBACCO PRODUCTS AND CIGARETTE PAPERS AND TUBES Rules for Special (Occupational) Tax Special Tax Stamps §...

2013-04-01

211

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

Code of Federal Regulations, 2013 CFR

...and examination of special tax stamps. 46.116 Section...Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT...RELATING TO TOBACCO PRODUCTS AND CIGARETTE PAPERS AND TUBES Rules for Special (Occupational) Tax Special Tax Stamps §...

2013-04-01

212

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

213

Can Food Stamps help to reduce Medicare spending on diabetes?  

PubMed Central

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.

Nicholas, Lauren Hersch

2010-01-01

214

Improved device performances in polymer light-emitting diodes using a stamp transfer printing process  

Microsoft Academic Search

The device performances of spin-coated and stamp transfer printed devices were compared. There was little difference of morphology between the spin-coated and stamp transfer printed devices. However, the stamp transfer printing process was better than the spin-coating process in terms of current density, light-emitting efficiency and lifetime. In particular, the lifetime of the stamp transfer printed device was doubled compared

Chul Woong Joo; Soon Ok Jeon; Kyoung Soo Yook; Jun Yeob Lee

2009-01-01

215

Bifunctional, Chemically Patterned Flat Stamps for Microcontact Printing of Polar Inks  

Microsoft Academic Search

Different methods to create chemically patterned, flat PDMS stamps with two different chemical functionalities were compared. The best method for making such stamps, functionalized with 1H,1H,2H,2H-perfluorodecyltrichlorosilane (PFDTS) and 3-(aminopropyl)triethoxysilane (APTS), appeared to be full functionalization of a freshly oxidized flat PDMS stamp with either adsorbate, followed by renewed oxidation through a mask and attachment of the other adsorbate. These stamps

Xuexin Duan; Veera B. Sadhu; András Perl; Mária Peter; David N. Reinhoudt; Jurriaan Huskens

2008-01-01

216

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

217

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

218

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

219

The Pichs Collection: Exploring Cuba's History Through Postal Stamps  

NSDL National Science Digital Library

Thanks to Web technology, visitors can take in all three of these small, geographically distant exhibitions, sponsored by the Smithsonian Institution and its affiliates, in less than an afternoon. Exploring Cuba's History through Postal Stamps is the first collaboration between the Smithsonian and the San Carlos Institute of Miami, Florida. Curator Ronald E.G. Davies, Aviation Historian, National Air and Space Museum, presents images of stamps, letters, and postcards, some with drawings of Cuban airplanes, photographs of planes, maps, or text, on the brown paper background of an airmail package.

220

The Application of Multi-layer Perception Networks in the Parameters Optimization of Stamping Forming Process  

Microsoft Academic Search

In the stamping process of high-strength steels, how to adjust each processing parameters to meet the needs of parts deformed is the key problem to be solved in the craft of stamping forming. The main work in this paper is to gain the optimum parameters by making use of neural network to fit experimental datum of stamping. In the experiment

Fengli Huang

2008-01-01

221

Feature-based metal stamping part and process design. Part I: stampability evaluation  

Microsoft Academic Search

It is essential to devise a representation scheme for the metal stamping part design which allows the designer to capture and reason the design information, and ultimately, to take various considerations into account and make evaluation decisions. In our research, the feature-based approach is used to represent the metal stamping part, and feature-based metal stamping part and process design has

Dunbing Tang; Benhe Gao

2007-01-01

222

Transient dynamical analysis of strain signals in sheet metal stamping processes  

Microsoft Academic Search

On-line monitoring of stamping processes can be carried out based on various sensors, such as force, strain, acceleration, proximity, and acoustic emission sensors. The strain sensor signal is the most favourite because of its effectiveness and acquisition cost as well as it contains rich information about the stamping process. The key problem of stamping monitoring is how to extract features

Xiaoli Li; A. M. Bassiuny

2008-01-01

223

The indentation of an elastic layer by a rigid stamp under conditions of complete adhesion  

Microsoft Academic Search

Summary In this paper the indentation of an elastic layer by a rigid stamp is treated under conditions of complete adhesion beneath the stamp, where the ratio of the half-width of the contact region and the thickness of the layer is assumed to be small. The cases of a flat stamp and a polynomial one are considered successively and two

J. P. Pauwelussen; J. B. Alblas

1980-01-01

224

Probabilistic Design in a Sheet Metal Stamping Process under Failure Analysis  

Microsoft Academic Search

Sheet metal stamping processes have been widely implemented in many industries due to its repeatability and productivity. In general, the simulations for a sheet metal forming process involve nonlinearity, complex material behavior and tool-material interaction. Instabilities in terms of tearing and wrinkling are major concerns in many sheet metal stamping processes. In this work, a sheet metal stamping process of

Thaweepat Buranathiti; Jian Cao; Z. Cedric Xia; Wei Chen

2005-01-01

225

Visualizing the game: the iconography of football on African postage stamps  

Microsoft Academic Search

Every country issues postage stamps. Originally construed as pre-payment for the service of transporting letters and packages, stamps have also become mediums for transmitting promotional images and sometimes even propaganda messages about the country of issue to its citizens and the rest of the world. Common themes of the images on postage stamps are sporting events, such as football games,

Agbenyega Adedze

2012-01-01

226

Fabrication of Sub-100 nm Sized Patterns on Curved Acryl Substrate Using a Flexible Stamp  

NASA Astrophysics Data System (ADS)

As small as 100 nm patterns were successfully transferred onto a non-planar acryl substrate using both UV nanoimprinting and hot embossing techniques. Two different types of flexible imprint stamps, electroformed nickel foil stamp and molded water-soluble poly(vinyl alcohol) (PVA) stamp, were used. 100 nm line and space pattern of Si master was successfully transferred to nickel foil stamp and PVA stamp and their patterns were also transferred to the surface of curved acryl substrate using either UV nanoimprint lithography or hot embossing lithography.

Hong, Sung-Hoon; Han, Kang-Soo; Byeon, Kyeong-Jae; Lee, Heon; Choi, Kyung-Woo

2008-05-01

227

Student Press Responds with Barrage of Stories Ranging from Tearjerkers to Editorials about the Gulf Crisis.  

ERIC Educational Resources Information Center

|Describes how the student press across the United States responded to the Gulf war with a barrage of stories ranging from tearjerkers about alumni who died to editorials condemning anti-Arab sentiment. (SR)|

Ricchiardi, Sherry

1991-01-01

228

Whom Shall We Put on the Postage Stamps?  

ERIC Educational Resources Information Center

|We consider the emergence of "notables" within the disciplines of the modern university, the foremost among whom may be selected to appear on postage stamps. Noting that disciplinary culture is as important as content in university education, we suggest that some knowledge of the identity of these notables, passed on by encultured tutors, should…

Boyle, Roger D.

2013-01-01

229

Rapid fabrication of nano-structured quartz stamps.  

PubMed

Replication of surface nano-structures from a master stamp allows large-area volume production that is otherwise cost prohibitive through conventional direct-write methods, such as electron beam lithography and focused ion beam milling. However, the creation of a master stamp containing sophisticated patterns still requires significant time on such direct-write tools. We demonstrate a method for reducing this tool time by patterning smaller nano-structures, and then enlarging them to the desired size through isotropic etching. We can create circular structures of any arrangement and size, down to the patterning limits of the direct-write tools. Subsequent metal mask deposition, lift-off, and anisotropic etching transforms the circular patterns to out-of-plane pillar structures for the final stamp. A 1 cm(2) area filled with a pattern of 200 nm diameter nano-holes spaced 520 nm apart, requires only 21 h to complete using our process, compared to 75 h using conventional fabrication. We demonstrate the utility and practicality of the quartz stamps through polymer embossing and replication. Embossed polymer nano-hole arrays are coated with a Cr/Au (5/100 nm) film to create surface plasmon resonance structures. Extraordinary optical transmission spectra from the metallized arrays show the expected spectral features when compared to focused ion beam milled structures. PMID:23324651

Chuo, Yindar; Landrock, Clint; Omrane, Badr; Hohertz, Donna; Grayli, Sasan V; Kavanagh, Karen; Kaminska, Bozena

2013-01-16

230

Optimization of stamping processes aiming at maximal process stability  

Microsoft Academic Search

In industrial practice the input parameters of a stamping system (material properties, friction conditions, machine settings, etc.) scatter considerably during production. In this paper, an approach for the determination of maximal stability of production process with regard to the uncontrollable scatter of the input parameters is described. The optimization procedure integrates process modeling and simple stochastic optimization by Monte Carlo

G. Gantar; K. Kuzman

2005-01-01

231

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

232

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

233

Rapid fabrication of nano-structured quartz stamps  

NASA Astrophysics Data System (ADS)

Replication of surface nano-structures from a master stamp allows large-area volume production that is otherwise cost prohibitive through conventional direct-write methods, such as electron beam lithography and focused ion beam milling. However, the creation of a master stamp containing sophisticated patterns still requires significant time on such direct-write tools. We demonstrate a method for reducing this tool time by patterning smaller nano-structures, and then enlarging them to the desired size through isotropic etching. We can create circular structures of any arrangement and size, down to the patterning limits of the direct-write tools. Subsequent metal mask deposition, lift-off, and anisotropic etching transforms the circular patterns to out-of-plane pillar structures for the final stamp. A 1 cm2 area filled with a pattern of 200 nm diameter nano-holes spaced 520 nm apart, requires only 21 h to complete using our process, compared to 75 h using conventional fabrication. We demonstrate the utility and practicality of the quartz stamps through polymer embossing and replication. Embossed polymer nano-hole arrays are coated with a Cr/Au (5/100 nm) film to create surface plasmon resonance structures. Extraordinary optical transmission spectra from the metallized arrays show the expected spectral features when compared to focused ion beam milled structures.

Chuo, Yindar; Landrock, Clint; Omrane, Badr; Hohertz, Donna; Grayli, Sasan V.; Kavanagh, Karen; Kaminska, Bozena

2013-02-01

234

Microcontact Printing of Dendrimers, Proteins, and Nanoparticles by Porous Stamps  

Microsoft Academic Search

Porous stamps fabricated by one-step phase separation micromolding were used for microcontact printing of polar inks, in particular aqueous solutions of dendrimers, proteins, and nanoparticles. Permanent hydrophilicity was achieved without any additional treatment by tailored choice of the polymer components. Pores with several hundred nanometers to micrometers were obtained during the phase separation process. These pores can act as ink

Huaping Xu; Xing Yi Ling; Bennekom van Joost; Xuexin Duan; Manon J. W. Ludden; David N. Reinhoudt; Matthias Wessling; Rob G. H. Lammertink; Jurriaan Huskens

2009-01-01

235

Japanese postage stamps as social agents: some anthropological perspectives  

Microsoft Academic Search

By relating the stamp issues made during the period 1937-89 to the changing Japanese political environment, this paper identifies themes in their designs which involve attempts by government to redefine Japanese national identity and Japan's desired role in the world. The paper suggests why certain other themes, which might have been expected to be prominent, were virtually missing from these

Douglas Frewer

2002-01-01

236

Stamp Act of 1979: Revenues in Goal Realization.  

ERIC Educational Resources Information Center

Stamp collecting can provide a highly motivating vehicle for achieving individual social and academic goals in elementary-grade educable mentally handicapped students. Among the social and academic skills fostered and reinforced through such a program are visual discrimination skills, fine motor skills, positive social interaction, and…

Seablom, Grayce

1980-01-01

237

42. INTERIOR VIEW LOOKING NORTHEAST AT THE STAMP BATTERIES. ONE ...  

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

42. INTERIOR VIEW LOOKING NORTHEAST AT THE STAMP BATTERIES. ONE OF THE DRIVE WHEELS IS ON THE FOREGROUND RIGHT WITH AN EXTANT DRIVE BELT. THE CAM SHAFT EXTENDS TO THE BACKGROUND CENTER. - Standard Gold Mill, East of Bodie Creek, Northeast of Bodie, Bodie, Mono County, CA

238

Can Food Stamps help to reduce Medicare spending on diabetes?  

Microsoft Academic Search

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

Lauren Hersch Nicholas

2011-01-01

239

Obesity and Poverty: Are Food Stamps to Blame?  

Microsoft Academic Search

Sixty-six percent of adults in the United States are overweight, and 32% of Americans are obese. Although poverty is usually associated with being underfed and underweight, in the United States, the paradoxical relationship between poverty and overweight exists. This article examines the relationship between Food Stamp Program (FSP) participation, food choices, and overweight status. This article examines the practicality of

Lauren M. Kupillas; Mary A. Nies

2007-01-01

240

Extending Multiversion Time-Stamping Protocols to Exploit Type Information  

Microsoft Academic Search

Atomic transactions are a widely accepted approach to implementing and reasoning about fault-tolerant distributed programs. This paper shows how multiversion time-stamping protocols for atomicity can be extended to induce fewer delays and restarts by exploiting semantic information about objects such as queues, directories, or counters. This technique relies on static preanalysis of conflicts between operations, and incurs no additional runtime

Maurice Herlihy

1987-01-01

241

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

242

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

243

Controlled co-evaporation of silanes for nanoimprint stamps  

Microsoft Academic Search

A new chemical vapour deposition setup for the generation of anti-adhesive coatings on Si stamps used in nanoimprint lithography has been developed. This is suitable for controlled co-evaporation of more than one type of silane by directly injecting a premixed silane into an evacuated deposition reactor through a septum. This process was found to be very flexible and resulted in

Helmut Schift; Sina Saxer; Celestino Padeste; Uwe Pieles; Jens Gobrecht

2005-01-01

244

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

245

Laser welding of Al-Si coated hot stamping steel  

Microsoft Academic Search

Advanced high strength steel (AHSS) is being increasingly used in automotive industries for weight reduction purposes. Hot stamping steel, which is a boron alloyed steel, has a strength greater than 1500MPa after hot forming and successive quenching. Because the heating temperature is normally greater than 900°C, a thin Al-Si based coating layer is applied to the steel surface to prevent

C. Kim; M. J. Kang; Y. D. Park

2011-01-01

246

Decline in Food Stamp Program Participation in the 1990's.  

National Technical Information Service (NTIS)

The Food Stamp Program saw an unprecedented decline in participation from 27.5 million participants in 1994 to 18.2 million participants in 1999. A strong economy and changes in social welfare programs drove this change. An econometric model with State-le...

2000-01-01

247

Decline in Food Stamp Participation: A Report to Congress.  

National Technical Information Service (NTIS)

Over the last decade, food stamp participation rose more sharply than expected following the relatively short and mild recession in the early 1990s and fell more sharply than expected after 1994 during the sustained period of economic growth. Changes in t...

2001-01-01

248

Formability Predictions in Stamping and Process Parameter Optimization Based on the Inverse Approach Code Fast_Stamp  

Microsoft Academic Search

A simplified (one step) method called ``inverse approach'' (IA) for the numerical analysis of the stamping process has been continuously developed by the authors since the end of the eighties. In the present paper we recall the main finite element formulation aspects, for an efficient estimation of the large elastoplastic strains encountered in deep drawing operations. The capabilities of the

J. L. Batoz; H. Naceur; Y. Q. Guo

2005-01-01

249

Victory for press freedom  

Microsoft Academic Search

Last month, following nationwide protests from journalists, editors and publishers, the Indian government withdrew its controversial Defamation Bill and announced that a national debate on the defamation issue would be intiated. The government's decision, announced by Prime Minister Rajiv Gandhi at the end of September, was greeted with jubilation by members of the press and public. The Bill, which would

Joseph Maliakan; Lek Hor Tan

1988-01-01

250

Student Press Archives.  

ERIC Educational Resources Information Center

|Lists the 200 issues, controversies, and court cases involving the student press that were described by John C. Behrens in the Fall 1977 issue of this journal (see EJ 173 477), and categorizes them according to 16 topics, including censorship, funding, litigations, and publication guidelines. Provides ordering information for materials relating…

College Press Review, 1979

1979-01-01

251

Tower Press Camera  

USGS Multimedia Gallery

"4x5" enclosure camera with Rangefinder and Wollensak Raptar lens serial #A18388, 62 mm, 1950s-60s. Manufactured by Busch Optical Manufacturing Company, Chicago, Illinois (also known as Busch Precision Camera Corporation). The company was famous for its versatile press cameras which featured an opti...

2009-07-22

252

Free press, corporate style  

Microsoft Academic Search

The values embodied in the U.S. Constitution by the First Amendment's free speech and press clauses are often personified in less abstract images: the brusque newspaper editor fighting prejudice or corruption; the labor organizer rallying workers against their exploiters; citizens massing together to protest injustices and to sway public opinion. These images reflect the individualist ethic that has dominated U.S.

Douglas W. Vick; Nancy Morris

1996-01-01

253

An investigation of microstructural evolution during equal-channel angular pressing  

Microsoft Academic Search

Experiments were conducted to investigate the development of an ultra-fine grain size during equal-channel angular (ECA) pressing of high purity aluminum with an initial grain size of ?1.0 mm. The results show that, under ECA pressing conditions giving a strain of ?1.05 on each passage through the die, the microstructure is reasonably homogeneous after a single pressing and consists of

Y. Iwahashi; Z. Horita; M. Nemoto; T. G. Langdon

1997-01-01

254

Development of a novel severe plastic deformation method for tubular materials: Tube Channel Pressing (TCP)  

Microsoft Academic Search

A new severe plastic deformation (SPD) method entitled Tube Channel Pressing (TCP) is proposed. In this study, the ability of TCP on strength improvement and grain refinement is assessed. This method is based on pressing a tube through a tubular channel die with a neck zone. Utilization of a mandrel fitted inside the tube prevents the crumpling of tube and

A. Zangiabadi; M. Kazeminezhad

2011-01-01

255

Pellet-press-to-sintering-boat nuclear fuel pellet loading system  

Microsoft Academic Search

This patent describes a system for loading nuclear fuel pellets into a sintering boat from a pellet press which ejects newly made the pellets from a pellet press die table surface. The system consists of: (a) a bowl having an inner surface, a longitudinal axis, an open and generally circular top of larger diameter, and an open and generally circular

1988-01-01

256

Freedom of the press for the press of the future  

Microsoft Academic Search

As technology improves, a free electronic press promises to provide channels of communication, education, and debate superior both to the paper press and to the electronic media of today. It is pointed out that historical accidents have created distinctions between the electronic and traditional media which place freedom of the electronic press in serious jeopardy. The problems associated with the

K. Eric Drexler

1991-01-01

257

Inner City Press  

NSDL National Science Digital Library

Based in the South Bronx, the Inner City Press has been publishing a newspaper focused on low-income neighborhoods nationwide since 1987. A few months ago, the organization went online with a weekly publication featuring original and engaging investigative and analytical pieces from a selection of beats, including the Federal Reserve, Community Reinvestment, Insurance Redlining, Wall Street, Environmental Justice, and Banks, among others. The most recent issue (August 30) includes concise reports on predatory lending, the economic crisis in Ecuador, press leaks and the Federal Reserve, and a round-up of bank news. The site also provides overviews and related resources for Community Reinvestment, the Inner City Public Interest Law Center, Environmental Justice, Insurance Redlining, and related topics.

258

Influence of Pressing Parameters on the Microstructure of PBX 9501  

NASA Astrophysics Data System (ADS)

Microstructural features, such as defects, crystal morphology, and crystal size distribution can dramatically affect the ignition sensitivity, performance, and mechanical properties of energetic materials. While these features can be characterized for the raw material, little is known about how they are altered during pressing. For example, in the preparation of a consolidated charge of PBX 9501, variables such as ultimate pressure, number of pressing cycles, dwell time, or rest time are varied in order to achieve nominal density of 1.830 g/cc. Although this density is met, differences in pressing parameters can lead to variations in microstructure between samples. To evaluate the effect of pressing parameters on the microstructure, three cylinders of PBX 9501 have been pressed at 5 kpsi, 15 kpsi, and 30 kpsi, using a 100 Ton heated steel die press. Polarized light microscopy (PLM) images taken at 144 locations within each cylinder show differences in porosity, crystal size and size distribution between cylinders and at different locations within the same cylinder. Scanning electron microscopy (SEM) further verifies increased fracture and rubblization of HMX during pressing.

Peterson, P. D.; Mang, J. T.; Fletcher, M. A.; Olinger, B. W.; Roemer, E. L.

2004-07-01

259

Monitoring Enzymatic Degradation of Pericellular Matrices through SERS Stamping  

PubMed Central

We introduce a surface enhanced Raman spectroscopy (SERS) stamping approach for acquiring cell-surface specific vibrational spectra of individual living cells under physiological conditions. The SERS stamping approach utilizes a nanostructured metal surface on top of a lithographically defined piston that can be translated in 3-dimensions with nanometer resolution to contact living cells in solution with a pristine metal surface. We applied this approach to characterize the chemical composition of the cellular surface of living MCF7 breast cancer cells and to monitor its change upon addition of the enzyme hyaluronidase, which degrades major constituents of the pericellular matrix. Although the cell surface spectra show significant cell-to-cell fluctuations, a statistical barcode analysis of the spectra ensembles reveals systematic changes in the cell surface SERS spectra upon addition of hyaluronidase, which are consistent with a thinning of the pericellular matrix.

Yan, Bo; Hong, Yan; Chen, Tianhong; Reinhard, Bjorn M.

2012-01-01

260

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 Abaqus© in conjunction with Python© scripting interface.

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

2011-05-01

261

KBE-based stamping process paths generated for automobile panels  

Microsoft Academic Search

As automobile body panels are one kind of sheet metal part with groups of free form surfaces, the process planning is more\\u000a complicated than common sheet metal stamping to implode effectively and practically. Based on KBE, new frameworks have been\\u000a presented as intelligent master model at the system level and as procedure model at the activity level. In accordance with

Jinqiao Zheng; Yilin Wang; Zhigang Li

2007-01-01

262

The role of Patrick Henry in the stamp act debate  

Microsoft Academic Search

Considerable uncertainty surrounds the role of Patrick Henry in the Stamp Act debate because the reports of the debate are incomplete and dubious. From re?examination of the records a more complete portrait of Henry as legislative advocate emerges. The study affirms the radical arguments of the Caesar?Brutus speech, and it reconstructs its oft?quoted conclusion. This oratorical achievement, though, when placed

David A. McCants

1981-01-01

263

Universally Composable Time-Stamping Schemes with Audit  

Microsoft Academic Search

We present a universally composable time-stamping scheme based on universal one-way hash func- tions. The model we use contains an ideal auditing functionality (implementable in the Common Reference String model), the task of which is to check that the rounds' d igests are correctly computed. Our scheme uses hash-trees and is just a slight modification of the known sche mes

Ahto Buldas; Peeter Laud; Märt Saarepera; Jan Willemson

2005-01-01

264

Comparison of three advanced hard coatings for stamping applications  

Microsoft Academic Search

Three advanced hard coatings, CrTiN alloy, TiN\\/NbN multilayer and a multilayered C-composite, were field-tested and compared for their stamping wear resistance. All coatings were deposited onto SKH51 steel punches using an unbalanced magnetron sputtering system. Parametric studies of substrate bias, deposition pressure, composition, and structure effects on the coatings’ performance were conducted to determine the optimum deposition conditions. A 25-ton

X. T. Zeng; S. Zhang; T. Muramatsu

2000-01-01

265

UV nanoimprint lithography using a diamond-like carbon stamp  

Microsoft Academic Search

Two-dimensional (2-D) and three-dimensional (3-D) diamond-like carbon (DLC) stamps for ultraviolet nanoimprint lithography (UV-NIL) were fabricated with two methods: namely, two-photon polymerization (TPP) patterning, followed by nanoscale-thick DLC coating; and a fluorine-doped (F-DLC) coating process, followed by O2 plasma etching. The DLC layer on top of polymer pattern or flat quartz substrate was formed using radio frequency plasma enhanced chemical

Jun-ho Jeong; Ki-don Kim; Young-suk Sim; Dae-geun Choi; Eung-sug Lee; Sang-hu Park; Tae-woo Lim; Dong-yol Yang

2006-01-01

266

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

267

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

268

Apparatus for restraining and transporting dies  

SciTech Connect

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

269

Apparatus for restraining and transporting dies  

SciTech Connect

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 movable 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. 5 figs.

Allison, J.W.; LaBarre, T.L.

1994-10-11

270

Liquid Supramolecular NanoStamping (LiSuNS)  

NASA Astrophysics Data System (ADS)

The development of high resolution bio-devices has generated a demand for the development of novel printing techniques able to minimize fabrication time and labor. Supramolecular NanoStamping (SuNS) is a stamping method that can copy single-stranded DNA features in a sequence specific way in only three steps: a master containing single stranded DNA features is immersed in a solution of complementary DNA (cDNA) molecules modified with a chemical group at the end (Hybridization). Another substrate is placed onto the hybridized master so that a chemical bond can form between cDNA and the secondary substrate (Contact). The two substrates are then separated by heating or mechanical force and a copy composed of cDNA is left on the secondary substrate (Dehybridization). However, like all other contact printing techniques, SuNS' efficiency highly depends on the roughness of the substrates used. Here, we present an extension of SuNS, Liquid Supramolecular NanoStamping (LiSuNS). LiSuNS eliminates the need of contact between two solid substrates by introducing a liquid prepolymer that is cured after contact. Using LiSuNS, we achieved large coverage >10cm?2. Moreover, because LiSuNS prints 3-D physical information as well as 1-D chemical information (i.e DNA sequences), it can be used to generate a complete DNA-based bio-device with 3-D physical shape (e.g. channels) and chemically modified patterns.

Yu, Arum Amy; Stellacci, Francesco

2008-03-01

271

Step and stamp imprint lithography using a commercial flip chip bonder  

Microsoft Academic Search

In this work we describe a new method suitable for large area nanoimprint lithography. In step&stamp process the pattern on a stamp is transferred into a polymer layer on the substrate by repeating a step&stamp cycle. The method is demonstrated by imprinting matrices of test structures on polymer-coated 100 mm silicon wafers. A new polymer, PPM, is used as resist

Tomi Haatainen; Jouni Ahopelto; Gabi Gruetzner; Marion Finck; Karl Pfeiffer

2000-01-01

272

Stamping process modeling of auto-body panel based on hierarchical polychromatic sets theory  

Microsoft Academic Search

Based on analysis of auto-body panelpsilas stamping process characteristics and feature classification, a stamping process information model of auto-body panel is established by using hierarchical polychromatic sets theory. The complex process information of auto-body panel can be described formally in the model. Based on the model, the system framework and flow of stamping CAPP for auto-body panel are presented.

Zhao Liping; Liu Chuanwei; Li Zongbin; Yao Yiyong

2008-01-01

273

Stamping patterns of insulated gold nanowires with self-organized ultrathin polymer films.  

PubMed

A thermal contact transfer technique is presented for the fabrication of nanoscaled to microscaled patterns of polymer-insulated metal structures on ceramic surfaces using metal-coated, thermoplastic stamps. The thermally activated formation of polymer-metal-polymer (PMP) heterostructures occurs spontaneously when a metal-coated thermoplastic stamp is compressed against a ceramic substrate and subsequently heated. The presented technique exploits the dynamics of ultrathin polymer films localized at interfaces and interfacial forces to prompt local reorganization of polymer stamp materials during processing. Intercalation of polymer stamp materials into the metal-substrate interface yields a cohesive polymer layer that binds the metal layer to the substrate. Disproportionate adhesion between the bulk polymer and the polymer layer at the stamp-metal interface leaves a capping layer upon separation of the stamp from the substrate. Here we demonstrate this technique with single use, bilevel polymer stamps which afford transfer of two distinct general products. The transfer of insulated submicrometer wide wires from the raised stamp features affords patterns of trilayered PMP structures with uniform wire dimensions. Concomitant transfer from the recessed stamp features allows fabrication of multilayered PMP architectures with sub-100 nm spacing from microstructured polymer stamps. Thus, patterns with two different insulated nanowire widths are readily fabricated in a single stamping process. A variety of ceramic substrates, thermoplastic materials, and metals can be used; e.g., inexpensive gold-coated CD or DVD media can be used as stamps, where the combination of materials dictates the relative interfacial forces and the processing parameters. PMID:16848472

Helt, James M; Drain, Charles Michael; Bazzan, Giorgio

2006-07-26

274

Nanopatterning and the flexible stamp replication using thermal and roll typed UV-NIL  

Microsoft Academic Search

In case of UV-Nanoimprint Lithography, a transparent quartz stamp with nano-scale patterns has the problems that are difficult to fabricate, handle and keep. Also, it's very expensive to fabricate nano-scale quartz stamp. Furthermore, according to enlarge the substrate size, these problems will be got out of control. In this paper, flexible and transparent replica stamps are fabricated using the polycarbonate,

KeeBong Choi; GeeHong Kim; JaeJong lee

2008-01-01

275

Complete transection of the pancreas due to a single stamping injury: a case report  

Microsoft Academic Search

Complete transection of the pancreas due to a single stamping injury is reported. A 47-year-old female was stamped on in\\u000a the epigastric region by her common-law husband when lying on her back. Immediately after the stamping, she complained of\\u000a severe abdominal pain. In an emergency hospital, the abdominal CT (computed tomography) scan showed a large haematoma around\\u000a the pancreas head.

K. Higashitani; T. Kondo; Y. Sato; T. Takayasu; R. Mori; T. Ohshima

2001-01-01

276

Fabrication of fluorine-doped diamond-like carbon stamps for UV nanoimprint lithography  

Microsoft Academic Search

Two fluorine-doped diamond-like carbon (F-DLC) stamps with sub-100 nm line patterns were fabricated using a direct etching method. These were applied successfully to ultraviolet (UV) nanoimprint lithography without requiring an anti-adhesion layer coating. Tests were performed to determine the optimum fluorine concentration for the F-DLC stamps. The ideal stamp material consisted of 25 at.% F-DLC with a contact angle of

A O Altun; J H Jeong; J J Rha; D G Choi; K D Kim; E S Lee

2006-01-01

277

Numerical Prediction of Microstructure and Mechanical Properties During the Hot Stamping Process  

Microsoft Academic Search

Numerical simulation and prediction of microstructures and mechanical properties of products is very important in product development of hot stamping parts. With this method we can easily design changes of hot stamping products' properties prior to the manufacturing stage and this offers noticeable time and cost savings. In the present work, the hot stamping process of a U-channel with 22MnB5

Dongbin Kan; Lizhong Liu; Ping Hu; Ning Ma; Guozhe Shen; Xiaoqiang Han; Liang Ying

2011-01-01

278

A Study of the Nutrition-Related Attitudes, Practices, and Perceived Needs of Food Stamp Clients  

Microsoft Academic Search

LEARNING OUTCOME: To demonstrate a clear understanding of the food and nutrition-related attitudes, practices, and perceived needs of persons receiving food stamps.In order for nutrition education programs to specifically target food stamp clients, the food and nutrition-related attitudes, practices, and perceived needs of this population must be recognized. To obtain this information, six focus group interviews with food stamp clients

S. C. Stack; R. H. Cox

1997-01-01

279

Comparison of Selected Nutritional Status Indices in Food Stamp Recipients and Non Recipients  

Microsoft Academic Search

LEARNING OUTCOME: To assess differences in anthropometric and dietary parameters of Food Stamp recipients and non-recipients forThe Food Stamp Program supplements income for food purchases; however, whether it improves the diet of recipients is uncertain. Anthropometric and dietary data were collected from 163 low income women in South Carolina. Ninety-three women participated in the Food Stamp Program, and 70 did

SF Stallings; PG Wolman; CH Goodner; SL Meacham

1996-01-01

280

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

281

Factors influencing the shearing patterns in equal-channel angular pressing  

Microsoft Academic Search

The shearing patterns are calculated for equal-channel angular pressing (ECAP) under three different conditions: (i) rotation of a sample around the X-axis when using a die angle of 90°, (ii) rotation around the X-axis when using a die angle of 120° and (iii) rotation around the Y- and Z-axes when using plate samples with a die angle of 90°. Separate

Minoru Furukawa; Zenji Horita; Terence G Langdon

2002-01-01

282

Hot Off the Press  

NSDL National Science Digital Library

Environmental Health Perspectives (EHP) , a peer-reviewed environmental health research journal (published by the National Institute of Environmental Health Sciences, part of the National Institutes of Health,) provides the EHP Student Edition for high school and college teachers and their students. Each edition contains news articles that summarize a wide variety of scientific information and original research, which are paired with complementary lessons that introduce students to hot-off-the-press science. This article presents ways to integrate EHP's online content in the classroom.

Schlegel, Barry; Tart, Kimberly T.; Hemminger, Laura; Pitman, Lisa; Hines, Stefani; Stephan, Wendy

2006-10-01

283

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

284

Academic libraries and university presses  

Microsoft Academic Search

In recent years university presses have undergone some significant changes, such as expansion of their scope to include materials\\u000a that may have appeal beyond the scholarly market. This article investigates, through the use of a survey of university libraries,\\u000a the acquisition of university press products by libraries. In general, recent years have been changes in the relationship\\u000a between university presses

John M. Budd

1991-01-01

285

Frictional behavior of the sliding interface between an A2 steel die and zinc-coated steel sheet  

NASA Astrophysics Data System (ADS)

The forming of coated sheet steel products is performed for a wide range of processing conditions. This article examines the effects of die history on the frictional nature of the sheet-die interface. It has been found that as successive tests are performed on a die from the as-lapped condition to the “run-in” condition, the die surface morphology changes significantly and the coefficient of friction, ?, decreases. Changes in surface roughness as well as scratch formation on the die are believed to affect the nature of the die-workpiece, lubricant interaction. The findings in this study suggest that the extensive polishing procedures used in the manufacture of new stamping dies should be carefully reevaluated.

Wichern, C. M.; van Tyne, C. J.

1999-10-01

286

Stony Brook Press  

NSDL National Science Digital Library

The State University of New York at Stony Brook has an impressive set of digital collections spanning poetry, history, and geography. This particular section of the digital initiative, known as DSpace, brings together past issues of the Stony Brook Press. This institutional journal is published every two weeks, and this particular archive contains over 560 issues. It's far from dry as it reports on everything from new literary endeavors to changes within the faculty. As one of the largest schools in the state system, this school has undergone many changes in the past twenty years, and this publication is a great way to learn more about the school's history. Also it is easy to search through past issues via the advanced search option.

287

Whom shall we Put on the Postage Stamps?  

NASA Astrophysics Data System (ADS)

We consider the emergence of `notables' within the disciplines of the modern university, the foremost among whom may be selected to appear on postage stamps. Noting that disciplinary culture is as important as content in university education, we suggest that some knowledge of the identity of these notables, passed on by encultured tutors, should be part of it. We observe that notability means different things to different communities, and may arise by some form of nomination or emergence, and in the latter case case may not coincide with formal lists of prizewinners. We illustrate with two case studies of disciplinary communities being polled for views of who occupies their pantheon.

Boyle, Roger D.

2013-03-01

288

Development and implementation of stamping technology for especially large pipe elbows for nuclear power stations  

SciTech Connect

Results are given of the development and implementation of a stamping process for large pipe elbows for high-pressure service. Basic experimental data that indicate the technical possibilities of the process and description of the results of implementing the stamping process for pipe elbows of D /SUB e/ of 750 and 850 mm are also presented.

Romashko, N.I.; Bryukhanov, Yu.V.; Lebedev, V.A.; Moshnin, E.N.; Timokhin, V.S.

1984-01-01

289

A comparative study of stamping and hydroforming processes for an automobile fuel tank using FEM  

Microsoft Academic Search

The use of sheet metal in the hydroforming process for hollow bodies is a new manufacturing technology for the automotive industry. In this paper, a comparison is made between the forming processes of sheet hydroforming and conventional stamping for production of an automobile fuel tank using a commercial explicit FEM code. A modeling methodology for correlation between stamping and hydroforming

Beom-Soo Kang; Bo-Mi Son; Jeong Kim

2004-01-01

290

A simulation-based design parameter study in the stamping process of an automotive member  

Microsoft Academic Search

This paper is concerned with the quantitative effect of design parameters on a stamped part of the autobody. The considered parameters in this paper are the blank holding force, the draw-bead force and the blank size, which greatly affect the metal flow during stamping. The indicators of formability selected in this paper are failures such as tearing, wrinkling and the

Jung-Han Song; Hoon Huh; Se-Ho Kim

2007-01-01

291

Fabrication of nano-gold islands with ?m spacing using 2.5 dimensional PDMS stamps  

Microsoft Academic Search

Gold islands with diameters in the range of several tens of nanometers with ?m spacing may act as binding sites for adapter molecules used for single molecule detection using optical fluorescence readout. Microcontact printing (?CP) using PDMS stamps and alkanethiol chemistry is a straightforward method for the structuring of gold layers. When using binary two dimensional (2D) stamps the softness

Wolfgang Schwinger; Elisabeth Lausecker; Iris Bergmair; Martyna Grydlik; Thomas Fromherz; Christine Hasenfuß; Rainer Schöftner

2008-01-01

292

Barriers to Participation in the Food Stamp Program Among Food Pantry Clients in Los Angeles  

Microsoft Academic Search

Substantial numbers of food pantry clients are eligible for food stamps but do not receive them. Background characteristics of 14317 food pantry users in Los Angeles were analyzed to provide information helpful in food stamp outreach programs. Ninety per- cent of food pantry users were living well below poverty level, 59% were Hispanic, and 44% were homeless. Only 15% of

Susan J. Algert; Michael Reibel; Marian J. Renvall

293

Feature-Preserving Data Compression of Stamping Tonnage Information Using Wavelets  

Microsoft Academic Search

Tonnage information is referred to as stamping force measurement in a complete forming cycle. Tonnage data contains rich information and features of stamping process failures. Due to its nonstationary nature and lack of physical engineering models, tonnage information cannot be effectively compressed using conventional data-compression techniques. This article presents a statistical method for “feature-preserving” data compression of tonnage information using

Jionghua Jin; Jianjun Shi

1999-01-01

294

FROM PAPER TO PLASTIC BY 2002: RETAILERS' PERSPECTIVE ON ELECTRONIC BENEFIT TRANSFER SYSTEMS FOR FOOD STAMPS  

Microsoft Academic Search

The Food Stamp Program (FSP) is working under the deadline of October 1, 2002, to coordinate a change from the current paper disbursement system of paper food stamps to an electronic transfer system of benefits, known as EBT. The Food and Nutrition Service of the U.S. Department of Agriculture has been studying the effectiveness of differing vehicles for benefit dispersal

Ana R. Quinones; Jean D. Kinsey

2000-01-01

295

Women Putting Our Stamp on America: Biographies and Activities for National Women's History Month, March 1999.  

ERIC Educational Resources Information Center

|This booklet, intended for use by educators and by workplace and community organizers, introduces women who have been featured on U.S. postage stamps as well as a few of the women who clearly merit such honor in the future. Postage stamps featuring women have been relatively few and far between and have only skimmed the surface of U.S. women in…

National Women's History Project, Windsor, CA.

296

Martensitic microstructural transformations from the hot stamping, quenching and partitioning process  

Microsoft Academic Search

Hot stamping, which combines forming and quenching in one process, produces high strength steels with limited ductility because the quenching is uncontrolled. A new processing technique has been proposed in which the hot stamping step is followed by a controlled quenching and partitioning process, producing a microstructure containing retained austenite and martensite. To investigate this microstructure, specimens were heated at

Heping Liu; Xuejun Jin; Han Dong; Jie Shi

2011-01-01

297

Extracting hot spots of basic and complex topics from time stamped documents  

Microsoft Academic Search

Identifying time periods with a burst of activity related to a topic has been an important problem in analyzing time stamped documents. In this paper, we discuss methods to compute a hot spot of a given topic from a time stamped document set. We consider basic topics that contain one or more keywords as well as complex topics that contain

Wei Chen; Parvathi Chundi

2009-01-01

298

Multiscale Transfer Printing into Recessed Microwells and on Curved Surfaces via Hierarchical Perfluoropolyether Stamps.  

PubMed

A simple method for the formation of multiscale metal patterns is presented using hierarchical polymeric stamps with perfluoropolyether (PFPE). A dual-scale PFPE structure is made via two-step moulding process under partial photocrosslinking conditions. The hierarchical PFPE stamp enables multiscale transfer printing (MTP) of metal pattern in one step within microwells as well as on curved surfaces. PMID:23606663

Park, Hyunchul; Cho, Hyesung; Kim, Junsoo; Bang, Jung Won; Seo, Soonmin; Rahmawan, Yudi; Lee, Deuk Yeon; Suh, Kahp-Yang

2013-04-18

299

The Food Stamp Program--Overissued Benefits Not Recovered and Fraud not Punished: Department of Agriculture.  

National Technical Information Service (NTIS)

Overissuance of food stamp benefits is a serious problem and a major drain on Federal funds. This report discusses the need for greater efforts and better techniques to identify and recover overissuances of food stamp benefits and to punish fraud by indiv...

1977-01-01

300

Need for Greater Efforts to Recover Costs of Food Stamps Obtained through Errors or Fraud.  

National Technical Information Service (NTIS)

In fiscal years 1980 and 1981, about $2 billion in food stamp benefits was overissued and about $500 million was underissued because of State food stamp agency errors and recipient errors and fraud. The net drain on program resources could have provided b...

1983-01-01

301

Motor Core Iron Loss Analysis Evaluating Shrink Fitting and Stamping by Finite-Element Method  

Microsoft Academic Search

We describe a method to analyze the effects of shrink fitting and stamping on the mechanical stress distribution and iron loss in motor cores. Shrink fitting and stamping are important processes in manufacture of motor cores from electrical steel. The mechanical stress distribution is evaluated by a structural finite-element method, and the iron loss is evaluated by combined analysis of

Keisuke Fujisaki; Ryu Hirayama; Takeshi Kawachi; Shouji Satou; Chikara Kaidou; Masao Yabumoto; Takeshi Kubota

2007-01-01

302

Comparative study of the prediction of microstructure and mechanical properties for a hot-stamped B-pillar reinforcing part  

Microsoft Academic Search

Automobile manufacturers have been increasingly adopting hot-stamped parts for use in newly designed vehicles to improve crash worthiness and fuel efficiency. However, the hot-stamped parts require extreme mechanical properties with ultimate tensile strengths as high as 1500MPa (?450 Vickers hardness) while still maintaining adequate formability during the stamping operation. The ultra high strength of hot-stamped components is attributed to the

Hyun-Ho Bok; Myoung-Gyu Lee; Erik J. Pavlina; F. Barlat; Hoon-Dong Kim

2011-01-01

303

PREPARATION OF METAL POWDER COMPACTS PRIOR TO PRESSING  

DOEpatents

A method of fabricating uranium by a powder metallurgical technique is described. It consists in introducing powdered uranium hydride into a receptacle shaped to coincide with the coatour of the die cavity and heating the hydride so that it decomposes to uranium metal. The metal particles cohere in the shapw of the receptacle and thereafter the prefurmed metal powder is pressed and sintered to obtain a dense compact.

Mansfield, H.

1958-08-26

304

Estimation of constitutive parameters for powder pressing by inverse modelling  

Microsoft Academic Search

Powder metallurgy processes are used in many material technologies for manufacturing of a wide range of industrial parts.\\u000a Products such as components for cars, cemented carbides and high-speed steels for mechanical cutting, magnets and soft magnetic\\u000a materials, bearings and refractory metals are made from powder. These parts are manufactured by powder die pressing followed\\u000a by sintering of the resulting green

B. Wikman; G. Bergman; M. Oldenburg; H.-Å. Häggblad

2006-01-01

305

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

PubMed

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 microm) 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 surface and maintained the viability of cells adsorbed on stamps during the patterning process. Stamps inked once with suspensions of cells allowed the repeated patterning of substrates. Direct stamping of human osteoblasts (and, potentially other mammalian cells) can be used to control the size, spacing, and geometry of patterns of cells printed on porous tissue engineering substrates. This approach may find use in controlling the spatial invasion of scaffolds, promoting the hierarchical organization of cells, and in controlling cell-cell interactions as a step in preservation of phenotypes of cells. PMID:15979701

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

2005-12-01

306

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

307

Catalytic stamp lithography for sub-100 nm patterning of organic monolayers.  

PubMed

A stamp-based nanoscale patterning technique of organic monolayers, termed catalytic stamp lithography, is described. The surface of poly(dimethylsiloxane) was patterned with catalytic Pd nanoparticles (NPs) via the use of self-assembled block copolymers. Using this catalytic stamp, catalytic hydrosilylations of terminal alkenes/alkynes were performed on H-terminated Si(111) or Si(100) surfaces to create nanoscale patterns of organic monolayers. Since the reaction takes place exclusively underneath the patterned Pd NPs (localized catalysis), the pattern formation is less susceptible to ink diffusion and stamp deformation, even at this sub-100 nm scale. A range of different molecular inks can be utilized to produce monolayer patterns of different chemical functionalities, and the stamps can be reused multiple times. The potential utility of this kind of chemically patterned surfaces as the basis for more complicated nanoarchitectures was demonstrated through gold nanoparticle capture, with a thiol-terminated nanopatterned silicon surface. PMID:19063631

Mizuno, Hidenori; Buriak, Jillian M

2008-12-31

308

Microstructuring of pSi(1 0 0) by localized electrochemical polishing using patterned agarose as a stamp  

Microsoft Academic Search

Localization of electrochemical polishing using patterned agarose has been employed to fabricate microstructures on p-Si(100). The patterns were first transferred from a master to an agarose stamp, and then the microstructures were fabricated by limiting electrochemical polishing in the small contact area between the stamp and the workpiece. The gel stamp acts as the current flow channel between the working

Li Zhang; Jin-Liang Zhuang; Xin-Zhou Ma; Jing Tang; Zhao-Wu Tian

2007-01-01

309

63 FR 38309 - Use and Determination of Postage Value of Breast Cancer Research Semi-postal Stamp  

Federal Register 2010, 2011, 2012, 2013

...Determination of Postage Value of Breast Cancer Research Semi-postal Stamp AGENCY...and determination of value of the Breast Cancer Research Semi-postal Stamp. DATES...SUPPLEMENTARY INFORMATION: The Stamp Out Breast Cancer Act, Pub. L. No. 105-41, 111...

1998-07-16

310

64 FR 10950 - Use and Determination of Postage Value of Breast Cancer Research Semi-postal Stamp  

Federal Register 2010, 2011, 2012, 2013

...Determination of Postage Value of Breast Cancer Research Semi-postal Stamp AGENCY...determination of postage value of the Breast Cancer Research Semi-postal Stamp. The Postal...determination of postage value of the Breast Cancer Research Semi-postal Stamp. The...

1999-03-08

311

Reaction: Student Press Law Center.  

ERIC Educational Resources Information Center

Provides a reaction from the Student Press Law Center to the Hazelwood School District versus Kuhlmeier decision. Urges student journalists and advisors to continue to do their best to produce quality, intelligent publications and to educate school administration and community about the importance of a free student press. (MG)

Goodman, Mark

1988-01-01

312

The Chilean Press Since Allende.  

ERIC Educational Resources Information Center

Based on interviews with 19 Chilean editors, government officials, heads of professional associations, and journalism education directors, this paper deals with the role of the press in Chile and with its future under the current military government. Following a review of the events concerning press control and censorship that followed the…

Knudson, Jerry W.

313

The Chilean Press Since Allende.  

ERIC Educational Resources Information Center

|Based on interviews with 19 Chilean editors, government officials, heads of professional associations, and journalism education directors, this paper deals with the role of the press in Chile and with its future under the current military government. Following a review of the events concerning press control and censorship that followed the…

Knudson, Jerry W.

314

Parameter Optimization for Mould and Die Recovering Using Laser Cladding  

NASA Astrophysics Data System (ADS)

In the last years the laser cladding has become an important technology that has been studied by several industries as automotive or aeronautical. Therefore, although this technology was used initially for coatings, actually it is being used for repairing or even direct manufacturing of high added value parts. In this paper, the application of laser cladding for repairing a GGG70L stamping die is presented. The first step is to present the methodology used to obtain the optimum conditions for AISI 316L stainless steel clads on structural steel (DIN C45). The next section shows a deeper study about the capacity of the process to fill standard geometries on DIN C45 and DIN 1.2379. Finally, a nodular cast iron GGG70L stamping die is repaired using laser cladding process. The parameters and strategy used for the repairing have been obtained on previous sections. Furthermore, in the final section a powder concentration model is presented as the first step to create a complete model that simulate the three stages of laser cladding: interaction between powder and laser beam, creation of melt pool and generation of clad geometry.

Tabernero, I.; Lamikiz, A.; Ukar, E.; Arregi, B.; Figueras, J.; Soriano, C.

2009-11-01

315

Die Soldering in Aluminium Die Casting.  

National Technical Information Service (NTIS)

Two types of tests, dipping tests and dip-coating tests were carried out on small steel cylinders using pure aluminum and 380 alloy to investigate the mechanism of die soldering during aluminum die casting. Optical and scanning electron microscopy were us...

Q. Han E. A. Kenik S. Viswanathan

2000-01-01

316

Die-upset PrCo5-type magnets: Enhanced coercivities  

Microsoft Academic Search

Rare-earth–cobalt alloys have been melt spun, yielding ribbons whose major phase was the hexagonal PrCo5 phase. Fully dense hot-pressed magnets with essentially isotropic magnetic properties have been formed by consolidating the ribbons at high temperatures and pressures. The hot-pressed precursor was then subjected to hot deformation or die upsetting, thereby inducing partial alignment of the c axis along the press

C. D. Fuerst; E. G. Brewer

1994-01-01

317

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

318

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

319

Warm Press Forming of Stainless Steel Sheets.  

National Technical Information Service (NTIS)

The effect of 'warm press forming' on the press formability of stainless steel sheets in deep drawing and restriking was studied. The result indicates that the press formability of both austenitic and ferritic steels is markedly improved by the compositio...

1985-01-01

320

7 CFR 550.29 - Press releases.  

Code of Federal Regulations, 2010 CFR

... 6 2010-01-01 2010-01-01 false Press releases. 550.29 Section 550.29 Agriculture...Agreements Program Management § 550.29 Press releases. Press releases or other forms of public notification will...

2010-01-01

321

7 CFR 550.29 - Press releases.  

Code of Federal Regulations, 2010 CFR

... 6 2009-01-01 2009-01-01 false Press releases. 550.29 Section 550.29 Agriculture...Agreements Program Management § 550.29 Press releases. Press releases or other forms of public notification will...

2009-01-01

322

Die Mehrheit entscheidet. Wirklich?  

Microsoft Academic Search

Hätte es den Irak-Krieg auch gegeben, wenn nicht George W. Bush, sondern Albert A. Gore die amerikanischen Präsidentschaftswahlen\\u000a des Jahres 2000 gewonnen hätte? Viel spricht für die Vermutung, dass dem nicht so wäre. Hätte Kanzler Gerhard Schröder die\\u000a Bundestagswahlen 2002 auch gewinnen können, ohne das Irak-Thema wahltaktisch zu besetzen? Wiederum spricht vieles für die\\u000a Vermutung, dass dem nicht so wäre.

Wolfgang Leininger

323

Die neue Gefahrstoffkennzeichnung  

Microsoft Academic Search

\\u000a Die EG-Verordnung 1272\\/2008 über die Einstufung, Kennzeichnung und Verpackung von Stoffen und Gemischen baut auf dem bestehenden\\u000a Chemikalienrecht auf und führt ein neues System zur Einstufung und Kennzeichnung gefährlicher Stoffe und Gemische ein, indem\\u000a die vom Wirtschaftsund Sozialrat der Vereinten Nationen (UN-ECOSOC) vereinbarten internationalen Kriterien für die Einstufung\\u000a und Kennzeichnung von gefährlichen Stoffen und Gemischen, das so genannte Globally Harmonized

Heinz Meinholz; Gabi Förtsch

324

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

325

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

326

Die Feldenkrais-Methode  

Microsoft Academic Search

Die Feldenkrais-Methode stellt einerseits eine körperorientierte Lernmethode dar, durch die Erkenntnisse über den eigenen\\u000a Körper und eigene dysfunktionale Bewegungsmuster zu gewinnen sind. Andererseits ist sie eine spezielle Form der Körpertherapie,\\u000a die auf der Basis verschiedenster Quellen und ganz wesentlich auch des Judo eine ganz eigene Behandlungsmethode generierte.

Hans-Erich Czetczok

327

Energiebereitstellung für die Elektromobilität  

Microsoft Academic Search

f€ u eine emissionsarme und nachhaltige Mobilit€ bieten, die aus regenerativen Quellen wie Wind- oder Solarenergie gespeist werden. Im Bereich des Fernverkehrs sind rein elektrische Antriebssysteme derzeit technologisch noch nicht reif. Batterietechnologien f€ die Schnellladung im Bereich von 5 bis 10 Minuten sind nur im Labor verf€ Die hohen Ladestr€ im Bereich bis zu einem Kiloampere stellen technologische Herausforderungen f€

Günther Brauner

2009-01-01

328

Untersuchungen über die Phototaxis  

Microsoft Academic Search

1.An drei grünen und einem farblosen lichtempfindlichen Protisten werden die absoluten Schwellenwerte für verschiedene Linien des Quecksilberspektrums ermittelt. Zur Verwendung gelangen die Wellenlängen 366 µµ (ultraviolett), 405 µµ (violett), 436 µµ (blau), 492 µµ (blaugrün), 546 µµ (gelbgrün) und 578 µµ (gelb), außerdem rotes Licht von 650 µµ aufwärts, für welches ein Osrampunktbrenner verwendet wird. Die Intensität des Lichtes wird

A. Luntz

1931-01-01

329

Thin die bonding techniques  

Microsoft Academic Search

Picking and bonding 50-micron thick chips presents new challenges to the die bonder industry. Extensive development efforts have identified a number of process challenges and solutions. This paper summarizes Esec's most recent learning's pertaining to the thin die bonding process. Problems with standard die bonding chip pick up and epoxy-dispensing techniques are discussed and solutions identified. Two novel pick solutions

J. Medding; R. Stalder; M. Niederhauser; P. Stoessel

2004-01-01

330

Development of Micro-Dies Using Titanium Super Plastic Alloy  

Microsoft Academic Search

We have developed a fabrication technique of micro-dies made of titanium super plastic alloy. Shapes of micro silicon structures, which are formed on a silicon substrate by micromachining technique, were imprinted to titanium super plastic alloy using a vacuum press machine at a temperature of 720 °C. We investigated the method to flatten the sidewall of dry-etched silicon structures, and

Hidenori Yoshimura; Fumikazu Oohira; Gen Hashiguchi; Tomoyuki Katayama; Hiroki Hayashi; Yutaka Mihara

2004-01-01

331

The Germination of a Free Press: A Dissident Print Culture and the Stamp Act in Colonial Virginia  

Microsoft Academic Search

Acknowledgments ,The modern,electronic world has made crucial primary documents,and other sources instantly available through the Internet, yet research still requires the help of many,archivists and librarians. This author would like to recognize a special debt to a few experts who,have gone beyond,the requirements,of their job to help: Rosemarie Zagarri, Professor of History at George Mason University, and my dissertation advisor.

Roger P. Mellen

2006-01-01

332

Censorship of the Collegiate Presses.  

ERIC Educational Resources Information Center

|Enumerates determinations of the American judicial system that protect the First Amendment rights of college journalists. Reviews discussions of those determinations. Discusses recent cases of imposed collegiate press censorship. Concludes that students continue to be silenced today. (TB)|

Kasior, Serjit; Darrah, Ed

1996-01-01

333

Conical tungsten stamps for the replication of pore arrays in anodic aluminium oxide films.  

PubMed

A tungsten master stamp has been generated by applying a novel procedure that includes two-step anodizing, followed by sequential anodizing and pore widening to develop nominally funnelled pores. These conical-shaped pores were filled with tungsten by sputter coating to manufacture a master stamp. Under a pressure of 65 MPa, the master stamp successfully embossed the surface of annealed and electropolished aluminium. The embossed surface was then used to control the position of pores created by anodizing under the conditions used to produce the original pore array. PMID:19468168

LeClere, D J; Thompson, G E; Derby, B

2009-05-26

334

A novel time stamping technique for distributed data acquisition systems  

NASA Astrophysics Data System (ADS)

In this paper, we discuss the design and implementation of a synchronizing technique for data acquisition systems, which can effectively use the normal, standard local area network cables to provide a time stamp, with a range up to 32 days, resolution of 10 ns, and synchronization within +/- 5 ns. This system may be used to synchronize data being collected by independent heterogeneous data acquisition modules, that acquire events independently. Such distributed systems are generally designed with a tree-like structure or independent self-triggered acquisition boxes. These leaf edges are connected through branches to the root node, via non-bus based inter-connecting links. The present system has been tested with a set of self-triggered digital signal processing based data acquisition engines, having a 100 MHz analog to digital converter front end.

Subramaniam, E. T.

2012-12-01

335

To Pluto by way of a postage stamp  

NASA Astrophysics Data System (ADS)

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.

1994-10-01

336

Electrochemical nanoimprinting with solid-state superionic stamps.  

PubMed

This letter presents a solid-state electrochemical nanoimprint process for direct patterning of metallic nanostructures. It uses a patterned solid electrolyte or superionic conductor (such as silver sulfide) as a stamp and etches a metallic film by an electrochemical reaction. Our preliminary experiments demonstrate repeatable and high-fidelity pattern transfer with features down to 50 nm on silver films of thicknesses ranging from 50 to 500 nm. As the process is conducted in an ambient environment and does not involve the use of liquids, it displays potential for single-step, high-throughput, large-area manufacturing of metallic nanostructures. The use of superionic conductors in manufacturing opens up a new and potentially energy-efficient approach to nanopatterning and fabrication. It offers a highly competitive approach, both as a stand-alone process and as a complement of other nanofabrication techniques, to fabricating chemical sensors, photonic and plasmonic structures, and electronic interconnects. PMID:17256917

Hsu, Keng H; Schultz, Peter L; Ferreira, Placid M; Fang, Nicholas X

2007-01-26

337

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.

Chen, Wei; Chundi, Parvathi

2011-01-01

338

Ultrasonic vibration press of metal and ceramic powders using complex vibration and vacuum condition  

Microsoft Academic Search

Ultrasonic vibration press of metal and ceramic powders using complex vibration punches under vacuum conditions is studied. Upper and lower 20 kHz longitudinal vibration compacting punches vibrating at anti-phase or in-phase mode and a vacuum compacting die are used. Using vibration punches or a vacuum die, compact density is increased over that obtained using only static pressure. Using only a

Jiromaru TSUJINO; Tetsugi UEOKA; Haruo SUZUKI; Satoru SHINUCHI; Koichi HASHIMOTO

1991-01-01

339

Direct metal nano-imprinting using an embossed solid electrolyte stamp  

NASA Astrophysics Data System (ADS)

In this paper, we report direct patterning of metal nanostructures using an embossed solid electrochemical stamp. Microforming of solid superionic stamps using Si templates—analogous to polymer patterning in nano-imprint lithography—is explored. Silver sulfide (Ag2S)—a superionic conductor with excellent microforming properties—is investigated as a candidate material. Important parameters of the superionic stamp, including mechanical behavior, material flow during forming and feature recovery after embossing, are studied. Excellent feature transferability during embossing as well as etching is observed. To illustrate the capability of this approach silver nano-antennas with gaps < 10 nm were successfully fabricated. The possibility for large area patterning with stamp diameters > 6 mm is also demonstrated. Embossing-based metal patterning allows fabrication beyond two-dimensional nanofabrication and several patterning schemes are reported.

Kumar, A.; Hsu, K. H.; Jacobs, K. E.; Ferreira, P. M.; Fang, N. X.

2011-04-01

340

Enhanced Mechanical Properties of a Hot-Stamped Advanced High-Strength Steel via Tempering Treatment  

NASA Astrophysics Data System (ADS)

The hot stamping process has an extensive range of applications due to its advantages over the traditionally used stamping techniques developed in the past. To enhance the mechanical properties of the indirectly hot-stamped parts, the quenching and partitioning (Q&P) process has been recently applied on boron-alloyed steel. In the current research, it was observed that the tempering treatment on the directly hot-stamped boron steel resulted in better mechanical properties and higher formability index compared with the reported results using the Q&P process. The nano-carbide formation and the dislocation annihilation during the tempering treatment were suggested as the evident reasons for the occurrence of the mentioned robust properties. The ease of the practical implementation of the tempering route together with the markedly enhanced mechanical properties of the tempered parts make the suggested method privileged. Additionally, the variations in the yield strength before and after tempering were quantitatively evaluated.

Naderi, M.; Abbasi, M.; Saeed-Akbari, A.

2013-04-01

341

Direct stamping of silver nanoparticles toward residue-free thick electrode  

NASA Astrophysics Data System (ADS)

Direct stamping of functional materials has been developed for cost-effective and process-effective manufacturing of nano/micro patterns. However, there remain several challenging issues like the perfect removal of the residual layer and realization of high aspect ratio. We have demonstrated facile fabrication of flexible strain sensors that have microscale thick interdigitated capacitors with no residual layer by a simple direct stamping with silver nanoparticles (AgNPs). Polyurethane (PU) prepolymer was utilized as an adhesive layer to transfer AgNPs more efficiently during the separation step of the flexible stamp from directly stamped AgNPs. Scanning electron microscopy images and energy dispersive x-ray spectroscopy analysis revealed residue-free transfer of microscale thick interdigitated electrodes onto two different flexible substrates (elastomeric and brittle) for the application to highly sensitive strain sensors.

Kim, Jiseok; Wubs, Kevin; Bae, Byeong-Soo; Kim, Woo Soo

2012-06-01

342

Clearinghouse Review, Vol. 26, No. 12, April 1993. Food Stamp Fraud and Overissuance.  

National Technical Information Service (NTIS)

Contents: Representing Food Stamp Claimants in Fraud and Overissuance Cases; Tenants of Federally Financed Housing Lose Rights to Lead Paint Abatement; The Safe Drinking Water Act--Dilemmas for the Poor; Federal Practice Tips: Litigating Medicaid Class Ac...

1993-01-01

343

Nanoscale optical features via hot-stamping of As2Se3 glass  

NASA Astrophysics Data System (ADS)

Here we show our ability to fabricate two-dimensional (2D) gratings on chalcogenide glasses with peak-to-valley amplitude of ~200 nm. The fabrication method relies on the thermal nano-imprinting of the glass substrate or film in direct contact with a patterned stamp. Stamping experiments are carried out using a bench-top precision glass-molding machine, both on As2Se3 optically-polished bulk samples and thermally-evaporated thin films. The stamps consist of silicon wafers patterned with sub-micron lithographically defined features. We demonstrate that the fabrication method described here enables precise control of the glass' viscosity, mitigates risks associated with internal structural damages such as dewetting, or parasitic crystallization. The stamping fidelity as a function of the Time-Force-Temperature regime is discussed, and further developments and potential applications are presented.

Danto, Sylvain; Koontz, Erick; Zou, Yi; Ogbuu, Tony O.; Gleason, Benn; Wachtel, Peter; Musgraves, Jonathan D.; Hu, Juejun; Richardson, Kathleen

2013-09-01

344

Fabrication of fluorine-doped diamond-like carbon stamps for UV nanoimprint lithography  

NASA Astrophysics Data System (ADS)

Two fluorine-doped diamond-like carbon (F-DLC) stamps with sub-100 nm line patterns were fabricated using a direct etching method. These were applied successfully to ultraviolet (UV) nanoimprint lithography without requiring an anti-adhesion layer coating. Tests were performed to determine the optimum fluorine concentration for the F-DLC stamps. The ideal stamp material consisted of 25 at.% F-DLC with a contact angle of 85°, UV transmittance of 16.4-26.8%, and hardness of 4.5 GPa. The O2 plasma etch rate of the DLC was increased considerably by the fluorine doping, making it comparable to the etch rate of polymethyl methacrylate (PMMA). Thus, only PMMA was used as the etch mask in the fabrication of the stamps.

Altun, A. O.; Jeong, J. H.; Rha, J. J.; Choi, D. G.; Kim, K. D.; Lee, E. S.

2006-09-01

345

Fabrication of fluorine-doped diamond-like carbon stamps for UV nanoimprint lithography.  

PubMed

Two fluorine-doped diamond-like carbon (F-DLC) stamps with sub-100 nm line patterns were fabricated using a direct etching method. These were applied successfully to ultraviolet (UV) nanoimprint lithography without requiring an anti-adhesion layer coating. Tests were performed to determine the optimum fluorine concentration for the F-DLC stamps. The ideal stamp material consisted of 25 at.% F-DLC with a contact angle of 85°, UV transmittance of 16.4-26.8%, and hardness of 4.5 GPa. The O(2) plasma etch rate of the DLC was increased considerably by the fluorine doping, making it comparable to the etch rate of polymethyl methacrylate (PMMA). Thus, only PMMA was used as the etch mask in the fabrication of the stamps. PMID:21727593

Altun, A O; Jeong, J H; Rha, J J; Choi, D G; Kim, K D; Lee, E S

2006-08-30

346

25 CFR 301.1 - Eligibility for use of Government stamp.  

Code of Federal Regulations, 2013 CFR

... 2013-04-01 false Eligibility for use of Government stamp. 301.1 Section 301.1 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR NAVAJO, PUEBLO, AND HOPI SILVER AND TURQUOISE PRODUCTS; STANDARDS §...

2013-04-01

347

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

348

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

349

Management System for Identifying and Correcting Problems in the Food Stamp Program Can Work Better.  

National Technical Information Service (NTIS)

The Department of Agriculture's corrective action process is used to identify and secure states' corrective actions on major Food Stamp Program problems, such as those related to determining eligibility, issuing benefits, collecting overpayments, and purs...

1984-01-01

350

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

351

Direct metal nano-imprinting using an embossed solid electrolyte stamp.  

PubMed

In this paper, we report direct patterning of metal nanostructures using an embossed solid electrochemical stamp. Microforming of solid superionic stamps using Si templates--analogous to polymer patterning in nano-imprint lithography--is explored. Silver sulfide (Ag?S)--a superionic conductor with excellent microforming properties--is investigated as a candidate material. Important parameters of the superionic stamp, including mechanical behavior, material flow during forming and feature recovery after embossing, are studied. Excellent feature transferability during embossing as well as etching is observed. To illustrate the capability of this approach silver nano-antennas with gaps < 10 nm were successfully fabricated. The possibility for large area patterning with stamp diameters > 6 mm is also demonstrated. Embossing-based metal patterning allows fabrication beyond two-dimensional nanofabrication and several patterning schemes are reported. PMID:21389570

Kumar, A; Hsu, K H; Jacobs, K E; Ferreira, P M; Fang, N X

2011-03-10

352

Temporal Expressiveness in Querying a Time-stamp-- based Clinical Database  

PubMed Central

Most health care databases include time-stamped instant data as the only temporal representation of patient information. Many previous efforts have attempted to provide frameworks in which medical databases could be queried in relation to time. These, however, have required either a sophisticated database representation of time, including time intervals, or a time-stamp-based database coupled with a nonstandard temporal query language. In this work, the authors demonstrate how their previously described data retrieval application, DXtractor, can be used as a database querying application with expressive power close to that of temporal databases and temporal query languages, using only standard SQL and existing time-stamp-based repositories. DXtractor provides the ability to compose temporal queries through an interface that is understood by nonprogramming medical personnel. Not all temporal constructs are easily implemented using this framework; nonetheless, DXtractor's temporal capabilities provide a significant improvement in the temporal expressivity accessible to clinicians using standard time-stamped clinical databases.

Nigrin, Daniel J.; Kohane, Isaac S.

2000-01-01

353

Self-reference in press releases  

Microsoft Academic Search

This article looks at press releases. Drawing from corpus-based evidence on reflexive person, time and place deixis, I shall argue that self-reference in press releases is part of a point of view operation with the writers of press releases switching out of their own perspective towards that of the journalists, who will have to copy the press releases in their

Geert Jacobs

1999-01-01

354

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

2011-11-04

355

Directed self-assembly of quantum structures by nanomechanical stamping using probe tips  

Microsoft Academic Search

We demonstrate that nanomechanically stamped substrates can be used as templates to pattern and direct the self-assembly of epitaxial quantum structures such as quantum dots. Diamond probe tips are used to indent or stamp the surface of GaAs(100) to create nanoscale volumes of dislocation-mediated deformation, which alter the growth surface strain. These strained sites act to bias nucleation, hence allowing

Curtis Taylor; Euclydes Marega; Eric A. Stach; Gregory Salamo; Lindsay Hussey; Martin Muñoz; Ajay Malshe

2008-01-01

356

Celebrating a Nation’s heritage on music stamps: Constructing an international community  

Microsoft Academic Search

Stamps convey important visible messages about a state’s heritage and worldview. They are images or official visible products\\u000a seen by those living within the state’s borders and those beyond. They also can be considered as “imagined communities,” as\\u000a like festivals, holidays, or WWW pages, they represent attachments to and images of place. We investigate stamps as elements\\u000a of visual culture

Kate Covington; Stanley D. Brunn

2006-01-01

357

On stamp forming of curved and flexible geometry components from continuous glass fiber\\/polypropylene composites  

Microsoft Academic Search

A thermoforming technique known as stamp forming has been used to transform a pre-consolidated unidirectional glass fiber reinforced polypropylene (GF\\/PP) flat panel into a more complex geometry. To achieve this, firstly, two-dimensional half-tube composite parts were formed, mainly to optimize the processing conditions such as stamping temperature, forming velocity and mold geometry. The two-dimensional mold was kept at room temperature,

K. Friedrich; M. Hou

1998-01-01

358

Development of nano-columnar carbon coating for dry micro-stamping  

Microsoft Academic Search

In parallel with down-sizing of electrical devices and products, manufacturing is forced to be also miniatured to fabricate small-sized electrical parts with the geometric size in millimeters. This type of micro-stamping, suffers from two issues: stamping in dry with strict accuracy in clearance. Residual lubricating oils and cleansing agents are completely disliked by electrical parts; elimination of these oils and

Tatsuhiko Aizawa; Eiji Iwamura; Kuniyoshi Itoh

2007-01-01

359

Replication of microchannel structures in polymers using laser fabricated glass–ceramic stamp  

Microsoft Academic Search

A new microreplication process with photo-etchable glass–ceramic stamps and polymers is presented. This process has two main advantages: a rapid master fabrication with a laser process and a flexible replication process compared with conventional nano- or microreplication technique on polymers. Photo-etchable glass–ceramics are used for the master stamp. Micropatterns can be rapidly transferred with a laser direct writing process and

Joohan Kim

2007-01-01

360

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

361

Die Stacking (3D) Microarchitecture  

Microsoft Academic Search

D die stacking is an exciting new technology that in- creases transistor density by vertically integrating two or more die with a dense, high-speed interface. The result of 3D die stacking is a significant reduction of interconnect both within a die and across dies in a system. For instance, blocks within a microprocessor can be placed vertically on multiple die

Bryan Black; Murali Annavaram; Ned Brekelbaum; John Devale; Lei Jiang; Gabriel H. Loh; Don McCauley; Pat Morrow; Donald W. Nelson; Daniel Pantuso; Paul Reed; Jeff Rupley; Sadasivan Shankar; John Paul Shen; Clair Webb

2006-01-01

362

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

363

Fabrication of Polymer Micropyramid/Nanolens Combined Structures Using Microstructured Nanodimpled Aluminum Stamp  

NASA Astrophysics Data System (ADS)

In this study, we present an efficient and low-cost fabrication technique of polymer micropyramid/nanolens combined structures (MPNL-CS). The present fabrication technique is based on hot embossing of polymer substrates using a microstructured nanodimpled aluminum (MNA) stamp. The MNA stamp for the replication of polymer MPNL-CS was realized by combining three fabrication steps. (1) A nickel stamp with micropyramid array was manufactured by electroforming onto an anisotropically wet-etched silicon substrate. (2) A reverse micropyramid cavity array was transcribed on an electropolished aluminum substrate by microindentation with the nickel stamp. (3) The MNA stamp was finally realized by forming nanodimple arrays onto the reverse micropyramid array on the aluminum substrate through an electrochemical oxidation (anodization) process. In the final step, we have optimized the electrochemical oxidation process to realize nanodimple arrays at the sharp edge reverse micropyramid without defects. The MPNL-CS were successfully replicated on polymer substrates via a hot embossing process with the fabricated MNA stamp through investigating the effect of embossing pressure on the transcription quality of MPNL-CS. The present fabrication technique can be widely applied to the realization of various types of three-dimensional micro/nano combined structures.

Cha, Kyoung Je; Lee, Bong-Kee; Kim, Dong Sung

2011-06-01

364

Parallel-local anodic oxidation of silicon surfaces by soft stamps  

NASA Astrophysics Data System (ADS)

We investigate the fabrication of nanometric patterns on silicon surfaces by using the parallel-local anodic oxidation technique with soft stamps. This method yields silicon oxide nanostructures 15 nm high, namely at least five times higher than the nanostructures made with local anodic oxidation using atomic force microscopy, and thanks to the size of the stamp enables one to pattern the surface across a centimetre length scale. To implement this technique, we built a machine to bring the metallized polydimethylsiloxane stamp in contact with the silicon surface, subsequently inserted in a sealed chamber with controlled relative humidity. The oxide nanostructures are fabricated when a bias voltage of 36 V is applied between the stamp and the silicon for 2 min, with a relative humidity of 90%. The flexibility of the stamp enables a homogeneous conformal contact with the silicon surface, resulting in an excellent reproducibility of the process. Moreover, by means of two subsequent oxidations with the same stamp and just rotating the sample, we are able to fabricate complex nanostructures. Finally, a detailed study of the oxidation mechanism, also using a finite element analysis, has been performed to understand the underlying mechanism.

Albonetti, Cristiano; Martinez, Javier; Losilla, Nuria S.; Greco, Pierpaolo; Cavallini, Massimiliano; Borgatti, Francesco; Montecchi, Monica; Pasquali, Luca; Garcia, Ricardo; Biscarini, Fabio

2008-10-01

365

Carbon nanotube substrates and catalyzed hot stamp for polishing and patterning the substrates  

DOEpatents

The present invention is generally directed to catalyzed hot stamp methods for polishing and/or patterning carbon nanotube-containing substrates. In some embodiments, the substrate, as a carbon nanotube fiber end, is brought into contact with a hot stamp (typically at 200-800.degree. C.), and is kept in contact with the hot stamp until the morphology/patterns on the hot stamp have been transferred to the substrate. In some embodiments, the hot stamp is made of material comprising one or more transition metals (Fe, Ni, Co, Pt, Ag, Au, etc.), which can catalyze the etching reaction of carbon with H.sub.2, CO.sub.2, H.sub.2O, and/or O.sub.2. Such methods can (1) polish the carbon nanotube-containing substrate with a microscopically smooth finish, and/or (2) transfer pre-defined patterns from the hot stamp to the substrate. Such polished or patterned carbon nanotube substrates can find application as carbon nanotube electrodes, field emitters, and field emitter arrays for displays and electron sources.

Wang, Yuhuang (Evanston, IL); Hauge, Robert H. (Houston, TX); Schmidt, Howard K. (Houston, TX); Kim, Myung Jong (Houston, TX); Kittrell, W. Carter (Houston, TX)

2009-09-08

366

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

367

Einführung in die Biotechnologie  

Microsoft Academic Search

\\u000a Biotechnologie wird mit vielen Eigenschaften belegt: sie wird als ’Schlüsseltechnologie’ (RooBEEK 1995), ’Querschnittstechnologie’\\u000a (REIB und KOSCHATZKY 1997), ’wissensbasierte Technologie’ und als eine der wichtigsten Technologien des 21. Jahrhunderts’\\u000a (GRuPP 1995) bezeichnet. Die Hysterie, die beim Börsengang junger Biotechnologieunternehmen insbesondere in den 1980er Jahren\\u000a in den USA zu beobachten war, die Hoffnungen auf immense Unternehmensgewinne, Durchbrüche kommerzieller Anwendungen und die\\u000a Schaffung

Viola Peter

368

Die Soldering in Aluminium Die Casting  

SciTech Connect

Two types of tests, dipping tests and dip-coating tests were carried out on small steel cylinders using pure aluminum and 380 alloy to investigate the mechanism of die soldering during aluminum die casting. Optical and scanning electron microscopy were used to study the morphology and composition of the phases formed during soldering. A soldering mechanism is postulated based on experimental observations. A soldering critical temperature is postulated at which iron begins to react with aluminum to form an aluminum-rich liquid phase and solid intermetallic compounds. When the temperature at the die surface is higher than this critical temperature, the aluminum-rich phase is liquid and joins the die with the casting during the subsequent solidification. The paper discusses the mechanism of soldering for the case of pure aluminum and 380 alloy casting in a steel mold, the factors that promote soldering, and the strength of the bond formed when soldering occurs. conditions, an aluminum-rich soldering layer may also form over the intermetallic layer. Although a significant amount of research has been conducted on the nature of these intermetallics, little is known about the conditions under which soldering occurs.

Han, Q.; Kenik, E.A.; Viswanathan, S.

2000-03-15

369

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

370

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

371

When Somebody Dies  

MedlinePLUS

... dies. It is just as if a glass bottle full of water broke, and the bottle became useless. The container is gone, but what's ... hole in our lives. Maybe you had a pet that died. Remember the first few times you ...

372

Shame, Death, and Dying  

Microsoft Academic Search

This paper deals with the influence of shame on the way in which Western society, particularly North America, is coping with death and dying. From being a familiar event, death and dying have become a shameful aspect of life. Thus, this paper provides some understanding of this important transformation, and it challenges some of our present attitudes regarding death and

Ramón Martínez de Pisón Liébanas

2002-01-01

373

Choosing when to Die  

Microsoft Academic Search

What would make it the right time for you to die, or the wrong one? In particular, could it be the right time for you to die even if your loved ones want to make the sacrifices needed to prolong your life, because that would cost them too dearly? The worry is that it would be selfish to permit these

Norvin Richards

2005-01-01

374

Offset block copolymer printing using brushless substrates and elastomeric stamps  

NASA Astrophysics Data System (ADS)

The block copolymer (BCP) films have been utilized as the useful templates for the nanopatterning because of their ability to form quite small feature size with a relatively easy and cheap method. Recently, the control of orientation as well as the perfect registration with long range order of nanosturctures in BCP films has been achieved by directing the assembly of BCP films with the chemical or topographical templates. However, such control of nanostructures and utilization of BCP films are limited on Si wafers since the templates are usually prepared by the semiconductor fabrication process. In this study, we will introduce a technique that overcomes such limitation on the application of BCP films. The chemical pattern prepared by e-beam lithography on the substrate without polymer brushes or mats was used as a template for the directed assembly of BCP films. Because the adhesion between this template and a BCP film is fairly weak, the directed assembled BCP films on this template could be easily transferred to the other substrates with adhesion-controlled elastomeric stamps. We believe that this transfer method, or printing method, would expand the applications of BCP films to areas where the nanotemplates are required.

Suh, Hyo Seon; Yoon, Hyunsik; Kyeong Kwon, Do; Char, Kookheon; Onses, M. Serdar; in Lee, Jeong; Nealey, Paul

2012-02-01

375

Censorship and the Student Press.  

ERIC Educational Resources Information Center

|The First Amendment rights provided to journalists--freedom of speech and of the press--are fundamental beliefs held by Americans. What students learn in the government class, however, may not be what they learn as editors-in-chief of student newspapers. U.S. schools are being charged with the censorship of student publications at an…

Oettinger, Lauren

376

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

377

A Conversation with Frank Press  

Microsoft Academic Search

Geophysicist Frank Press was director of Caltech's Seismological Laboratory from 1957 to 1965. In this interview, he recalls his work with Maurice Ewing at Columbia's Lamont Geological Observatory; his directorship of Caltech's Seismological Laboratory and colleagues Charles Richter, Beno Gutenberg, and Hugo Benioff; his work on the free oscillations of the earth; and his part in establishing the worldwide network

Judith R. Goodstein

2004-01-01

378

National Academy Press: New Books  

NSDL National Science Digital Library

This site will keep users abreast of the latest publications from 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. The New Books sites provides annotated descriptions of recent publications.

Press., National A.

379

Press Reports of Animal Hoarding  

Microsoft Academic Search

This article explores how the press reports nonhuman animal hoarding and hoarders. It discusses how 100 articles from 1995 to the present were content analyzed. Analysis revealed é ve emotional themes that include drama, revulsion, sympathy, indig- nation, and humor. While these themes draw readers' attention and make disparate facts behind cases understandable by pack- aging them in familiar formats,

Arnold Arluke; Randy Frost; Gail Steketee; Gary Patronek; Carter Luke; Edward Messner; Jane Nathanson; Michelle Papazian

2002-01-01

380

Hot Isostatic Pressing of Ceramics.  

National Technical Information Service (NTIS)

A mixture containing glass 70 to 95 and BN or B4C powder (0.1-10 microns) 5 to 30 vol. % is used as a secondary pressure medium in hot isostatic pressing of ceramics. Thus, Pyrex beads were mixed with 15% vol. BN powder (average diameter 2 microns), fused...

K. Honma

1985-01-01

381

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.

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

382

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

383

Freedom of the Press and Social Responsibility Theory  

Microsoft Academic Search

Journalism is having a hard time. People's reliance on the press has been replaced by a critical look at the press. What does it mean for the press to be free, and to be responsible? Examining freedom of the press and social responsibility of the press in A Free and Responsible Press (1947), Four Theories of the Press (1963), and

Takatoshi HIRAISHI

384

Direct printing of silver nanoparticles by an agarose stamp on planar and patterned substrates  

NASA Astrophysics Data System (ADS)

In this study, we have used an agarose stamp to conduct direct printing of silver nanoparticles, nanowires and nanoplates on both planar and structured substrates. Nanoparticle solution could be first coated on an agarose stamp, and then transferred to a planar substrate. Micro-patterns comprising metal nanoparticles could be printed on planar substrates without the formation of residual layers. Thus a three-dimensional metal microstructure could be easily fabricated. The patterning of electrodes by printing Ag nanowires directly on TiO2 was also demonstrated to fabricate resistive random access memory (RRAM) devices by all-solution-processing methods. By using a flat agarose stamp, the patterns printed on the microstructured substrates were quite different from those on the nanostructured substrates. On the microstructured substrates, direct printing could print silver nanoparticles onto the protrusion surface, and could print silver layers as thick as several microns, useful for high conductivity electrodes. On the substrates with nanostructures such as photonic crystals or nano-gratings, direct printing could transfer nanoparticles into the grooves or cavities only due to the contact of the agarose stamp with the groove or concavity surface. A new approach to fabricate metal wire grid polarizers was further demonstrated. A nanoporous agarose stamp has a good potential for printing using nanoparticle suspension.

Kao, Yu-Chih; Hong, Franklin Chau-Nan

2011-05-01

385

Nuclear Criticality Safety Analysis of Isostatic Press.  

National Technical Information Service (NTIS)

In response to your request a nuclear criticality safety analysis was done for the isostatic press for conditions that were specified. Under normal conditions the press is subcritical by a large margin. It is considered remotely possible, however, that th...

H. K. Clark

1988-01-01

386

How to Press and Preserve Plants  

NSDL National Science Digital Library

In this Biodiversity Counts activity, students learn how to press and preserve plant specimens. The online page includes illustrated instructions about how to layer and maintain pressings until the specimens have dried.

387

Freedom of the Press vs. Public Access.  

National Technical Information Service (NTIS)

The report reviews the constitutional rights and restraints of the press, especially in the age of electronic media. It discusses the roles of radio and television in conjunction with press freedom, and the constitutionality of government intervention.

B. C. Schmidt

1976-01-01

388

When a Pet Dies  

MedlinePLUS

... losses throughout life. Sharing the News and the Grief One of the most difficult parts about losing ... Died. How Can I Feel Better? Death and Grief Pets and Your Health Contact Us Print Additional ...

389

Die andere Revolution  

NASA Astrophysics Data System (ADS)

War Kopernikus der größte Revolutionär des naturwissenschaftlichen Weltbildes? Seine Erkenntnisse waren der Beginn eines jahrhundertelangen Denkprozesses, welcher zur Einsicht führte, dass im Weltall die gleichen physikalischen Gesetze gelten wie auf der Erde.

Kippenhahn, Rudolf

2005-05-01

390

Die Macht der Ideen  

Microsoft Academic Search

\\u000a 1925 veröffentlichte Karl Mannheim den späterhin berühmt gewordenen programmatischen Aufsatz Das Problem einer Soziologie des Wissens.1 Aus guten Gründen wurde der Text in erster Linie als Ausformulierung einer „Soziologie des Wissens“ gewürdigt, deren Eigenständigkeit\\u000a und Herausforderungspotential zahlreiche Intellektuelle sofort erkannten.2 Entsprechend heftig fielen die zahlreichen Reaktionen auf Mannheims neuartige Soziologie aus, die sich nichts weniger vorgenommene\\u000a hatte als angeben zu

Thomas Meyer

391

Reducing the Surface Degradation of Aluminum Extrusion Dies During Preheating  

NASA Astrophysics Data System (ADS)

Aluminum extrusion dies are usually made from H13 steel that is ferritically nitrocarburized to minimize wear and pick-up. Before being placed in the extrusion press, the dies are preheated to minimize thermal shock at the start of the extrusion cycle. During the preheating time, the nitrocarburized layer oxidizes. Some of this layer can break away during extrusion leaving marks on the product. Although inerting the preheat furnaces with nitrogen has been found to reduce the oxidation, it does not solve the problem completely. Experiments have shown that a small addition of ammonia to the preheating protective atmosphere could eliminate oxidation and prevent nitrogen loss from the surface nitride layer.

Stratton, Paul

2010-07-01

392

A Conversation with Frank Press  

NASA Astrophysics Data System (ADS)

Geophysicist Frank Press was director of Caltech's Seismological Laboratory from 1957 to 1965. In this interview, he recalls his work with Maurice Ewing at Columbia's Lamont Geological Observatory; his directorship of Caltech's Seismological Laboratory and colleagues Charles Richter, Beno Gutenberg, and Hugo Benioff; his work on the free oscillations of the earth; and his part in establishing the worldwide network of seismographs for the detection of nuclear weapons testing.

Goodstein, Judith R.

393

A Conversation with Frank Press  

Microsoft Academic Search

Geophysicist Frank Press was director of Caltech’s Seismological Laboratory from 1957 to 1965. In this interview, he recalls his work with Maurice Ewing at Columbia’s Lamont Geological Observatory; his directorship of Caltech’s Seismological Laboratory and colleagues Charles Richter, Beno Gutenberg, and Hugo Benioff; his work on the free oscillations of the earth; and his part in establishing the worldwide network

Judith R. Goodstein

2004-01-01

394

Factors influencing the equilibrium grain size in equal-channel angular pressing: Role of Mg additions to aluminum  

Microsoft Academic Search

Experiments were undertaken to compare the equal-channel angular (ECA) pressing of Al-1 pct Mg and Al-3 pct Mg solid-solution\\u000a alloys with pure Al. The results reveal both similarities and differences between these three materials. Bands of subgrains\\u000a are formed in all three materials in a single passage through the die, and these subgrains subsequently evolve, on further\\u000a pressings through the

Yoshinori Iwahashi; Zenji Horita; Minoru Nemoto; Terence G. Langdon

1998-01-01

395

The Egyptian Press: An Official Fourth Estate.  

ERIC Educational Resources Information Center

A descriptive study based on Egyptian law, printed sources, and interviews clarifies our picture of the Egyptian Press by examining its status as a constitutionally mandated "Fourth Estate." The constitutional amendment, the resultant Egyptian Press Law, and the "Law Of Shame" (all passed in 1980), are designed to create a heavily controlled press

Lawhorne, Clifton O.

396

Attention that Indicators Receive in the Press  

ERIC Educational Resources Information Center

|With the release of each edition of Education at a Glance, the Office for Economic Co-operation and Development (OECD) prepares a press briefing to be used for the international press release and which individual countries in preparing their national press releases can also use. Similarly, the European Union prepares a summary, not for use at the…

Hendriks, Maria; Barzano, Giovanna; Brumana, Emanuela; Cremonesi, Claudia

2004-01-01

397

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

398

Automated Handling of Garments for Pressing.  

National Technical Information Service (NTIS)

The overall objective of this project is to acquire the knowledge necessary for a totally automated pressing system which loads a complete garment or sub-assembly on a form, smooths it for pressing and unloads the press. This will be achieved in three yea...

A. Schorr

1991-01-01

399

College Student Press Freedom and Student Services.  

ERIC Educational Resources Information Center

|Reviews court decisions affecting censorship and freedom of the student press at public and private colleges. Considers recent attempts at censorship and their outcomes. Discusses links between freedom of the press on campus and student personnel services. Outlines areas in which student personnel workers can help safeguard press freedom on…

Salazar, Pamela Reed

1986-01-01

400

The Burger Court and the Press.  

ERIC Educational Resources Information Center

|This report discusses recent cases involving freedom of the press that have been heard before the Burger court of the United States Supreme Court. The report discerns a trend toward treating the press like an ordinary citizen; this is a reversal of the view of the Warren court that the First Amendment creates special rights for the press so that…

Higdon, Philip R.

401

Printing of sub-100-nm metal nanodot arrays by carbon nanopost stamps.  

PubMed

This work reports an efficient method to fabricate hexagonally patterned metal nanodot arrays at the sub-100-nm scale, which is based on contact printing via novel nanometer-scaled stamps. Vertically aligned carbon nanoposts, supported by hexagonally ordered nanochannels of anodic aluminum oxide templates, are employed as the stamping platform to directly transfer controlled metal nanodot arrays. Using the fabrication platform, a number of patterned metal nanodot arrays made of Au, Cu, Ni, Ag, Pt, Al, and Ti can be contact-printed over large substrate areas in ambient conditions. The size, density, and interdistance of the printed nanodots are controllable with a tight correspondence to the mother stamp geometries, which can be precisely tuned by modifying the pore dimensions of the alumina matrixes. An advanced example of contact printing of metal nanoparticles is successfully demonstrated by the controlled formation of nanodot arrays in a specific area. PMID:21699221

Lee, Sang Ho; Cho, Byungjin; Yoon, Seungha; Jeong, Huisu; Jon, Sangyong; Jung, Gun Young; Cho, Beong Ki; Lee, Takhee; Kim, Won Bae

2011-06-28

402

Replication of microchannel structures in polymers using laser fabricated glass ceramic stamp  

NASA Astrophysics Data System (ADS)

A new microreplication process with photo-etchable glass ceramic stamps and polymers is presented. This process has two main advantages: a rapid master fabrication with a laser process and a flexible replication process compared with conventional nano- or microreplication technique on polymers. Photo-etchable glass ceramics are used for the master stamp. Micropatterns can be rapidly transferred with a laser direct writing process and the removal of the glass ceramics can be efficiently achieved with a wet etching process. Therefore, microstructures with flat bottom surfaces and straight sidewall structures can be obtained, which is difficult in the laser direct writing process. A microstamping process of applying heat and pressure, also referred to as hot embossing lithography or microstamping, can replicate microstructures on polymer surfaces. In this work, the fabricated glass ceramic stamps are used for the replication process and various replicated polymer microstructures are presented.

Kim, Joohan

2007-08-01

403

Development of Estimation Procedure of Contact Heat Transfer Coefficient at the Part-Tool Interface in Hot Stamping Process  

Microsoft Academic Search

Energy efficiency, a high level of passenger safety, and weight reduction of the vehicles still constitute the main functional elements for the design of modern car body structures. Toward this objective, the usage of advanced sheet-metal forming technologies like hot stamping of quenchable boron manganese steel is developing nowadays. Hot stamping is a combination of hot forming and simultaneously quenching

Bakri Abdulhay; Brahim Bourouga; Christine Dessain; Gilles Brun; Joel Wilsius

2011-01-01

404

An emerging rationale for revolution: Argument from circumstance and definition in polemics against the stamp act, 1765–1766  

Microsoft Academic Search

The Stamp Act protest movement arose in opposition to the Grenville Ministry's program of revenue stamps in the American colonies. Analysis of the polemic literature reveals the essential unity of claims conforming to each of Richard Weaver's bi?polar concepts of circumstance and genus as sources of argument.

J. Michael Sproule

1975-01-01

405

To Help or To Harm? Food Stamp Receipt and Mortality Risk Prior to the 1996 Welfare Reform Act  

Microsoft Academic Search

We use data from the National Health Interview Survey-Family Resources Supplement to examine the relationship between Food Stamp receipt and prospective adult mortality, among eligible households. We specify a switching probit model to adjust for observed and unobserved factors that correlate with selection into the Food Stamp Program and mortality, and to estimate mortality under counterfactual conditions that we do

Patrick M. Krueger; Richard G. Rogers; Cristobal Ridao-Cano; Robert A. Hummer

2004-01-01

406

State and Prospects of Development of Sheet-Metal Stamping Industry (Sostoyanie I Perspektivy Razvitiya Listoshtampovochnogo Proizvodstva).  

National Technical Information Service (NTIS)

This article describes the present state and prospects of development of the sheet-metal stamping industry in the U.S.S.R. Various aspects of sheet-metal stamping industry are discussed: explosive forming, pulsating electrohydraulic and electromagnetic st...

I. A. Noritsyn

1967-01-01

407

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

Microsoft Academic Search

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

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

2011-01-01

408

Stamping-based planarization of flexible substrate for low-pressure UV nanoimprint lithography.  

PubMed

Patterning flexible substrates in nano scale is an important and challenging issue in the fabrication of next-generation devices based on a non-silicon substrate. Step and Flash imprint lithography (S-FIL) which is a room temperature and low pressure process offers several important advantages, such as the use of a smaller and therefore cheaper stamp or the possibility of the overlay imprinting, as a transparent stamp is utilized. However, it is very difficult to perform S-FIL on a flexible substrate successfully due to the high waviness. The waviness of a flexible substrate is not a constant value in contrast to a rigid substrate. It depends on the imprint pressure applied onto the substrate. In this paper, in section two, the effect of the imprint pressure on the waviness of the surface of the flexible substrate is examined. It is proved that the waviness of the surface of the flexible substrate could not be reduced sufficiently to assure a successful imprint at low imprint pressures. In the third section, a method of patterning polymer substrates using ultra-violet nanoimprint lithography (UV-NIL) is presented. The method consists of two stages, stamping-based planarization and S-FIL. In stamping-based planarization, a planarization layer of transparent polymer is formed onto the flexible substrate. Waviness of the blank stamp (in this study, glass wafer) is transferred to the planarization layer. S-FIL is performed with the nanoimprint tool IMPRIO100 directly onto the planarization layer employing a 1 x 1 in. quartz stamp. Optical microscope and SEM images of the successfully imprinted patterns were also presented. PMID:19198287

Altun, Ali Ozhan; Jeong, Jun-Ho; Jung, Sung-Un; Kim, Ki-Don; Choi, Dae-Geun; Choi, Jun-Hyuk; Shim, Jong-Youp; Lee, Dong-Il; Lee, Eung-Sug

2008-11-01

409

Open-die forging of structurally porous sandwich panels  

Microsoft Academic Search

Structurally porous metal sandwich panels consisting of dense face sheets and porous cores of controlled relative density\\u000a can be manufactured by trapping inert gas during hot isostatic pressing and modifying its distribution via subsequent thermomechanical forming. A plane-strain solution for analyzing the open-die forging of such a plastically compressible\\u000a sandwich panel is developed. An effective yield potential for the face

D. M. Elzey; H. N. G. Wadley

1999-01-01

410

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

PubMed

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

2012-10-28

411

A non-fluorine mold release agent for Ni stamp in nanoimprint process  

Microsoft Academic Search

This study presents a novel material as an anti-adhesive layer between Ni mold stamps and polymethyl methacrylate (PMMA) substrate in nanoimprint process. A polybenzoxazine ((6,6’-bis(2,3-dihydro-3-methyl-4H-1,3-benzoxazinyl))) molecule self-assembled monolayer (PBO-SAM) considering as anti-adhesive coating agent demonstrates that non-fluorine-containing compounds can be improve the nanoimprint process in Ni\\/PMMA substrates. In this work, the nanostructure-based Ni stamps and the imprinted PMMA mold are

Tien-Li Chang; Jung-Chang Wang; Chun-Chi Chen; Ya-Wei Lee; Ta-Hsin Chou

2008-01-01

412

Chromosomal assignment of 20 cDNAs using flow-sorted spot-blot stamps  

SciTech Connect

Using a high-speed flow cytometer/sorter, we constructed spot-blot {open_quotes}stamps{close_quotes} measuring 3.5 x 2.0 cm containing 21 separate human chromosome fractions. Through hybridization to these stamps, 20 randomly selected cDNAs were assigned to specific chromosomes. Sequencing and BLAST database screening confirmed the location of one gene (UCHL1) and allowed the assignment of two other previously identified genes (LRP130 and cDNA IB871). 23 refs., 1 fig., 1 tab.

Ghiso, N.S.; Eveleth, G.G.; Lieuallen, K.; Lennon, G.G. [Lawrence Livermore National Lab., CA (United States)

1995-08-10

413

Nanotransfer printing using plasma etched silicon stamps and mediated by in situ deposited fluoropolymer.  

PubMed

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 a 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. PMID:21526774

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

2011-04-28

414

Die Europäische Union, die Europäische Gemeinschaft und ihre Rechtsordnung, die Europäische Lebensmittelkontrolle  

NASA Astrophysics Data System (ADS)

Die Europäische Union (EU) ist ein Zusammenschluss von siebenundzwanzig unabhängigen Staaten, um deren wirtschaftliche, politische und soziale Zusammenarbeit zu verstärken. Seit 1. Mai 2007 hat sie die folgenden Mitglieder: Österreich, Belgien, Bulgarien, Dänemark, Finnland, Frankreich, Deutschland, Griechenland, Irland, Italien, Luxemburg, die Niederlande, Portugal, Spanien, Schweden, das Vereinigte Königreich von Großbritannien und Nordirland, Zypern, die Tschechische Republik, Estland, Ungarn, Lettland, Litauen, Malta, Polen, Rumänien, die Slowakei und Slowenien [1]. (Hinweis: Die Republik Zypern hat juristisch Souveränität über die ganze Insel, da die Türkische Republik Nordzypern international nicht anerkannt wird.)

Gallhoff, Gudrun; Rimkus, Gerhard G.

415

Development and Evaluation of Five-Axis Laser Cutting Machine,  

National Technical Information Service (NTIS)

Blanking and hole piercing of most body panels for a prototype vehicle are conducted with scissors or vibro shear after stamping with symplified press dies. Laser cutting machines are effective to drastically improve the process but usually they cannot cu...

Y. Ishimatsu T. Kawaji M. Ito

1988-01-01

416

UW Madison Libraries: Parallel Press  

NSDL National Science Digital Library

UW-Madison Libraries' Parallel Press combines book publishing traditions with new technology to provide print-on-demand books and a series of chapbooks (small, inexpensive books featuring the works of authors and poets with a Wisconsin connection). Print-on-demand books parallel the online editions created by the Libraries' digitizing initiatives. Currently, four titles, including David Hayman's A First-Draft Version of Finnegan's Wake (originally published in 1963) and The Book of Beasts (1954), by T.H. White, are available via Parallel Press print-on-demand service. The poetry chapbook series began in 1999 with the publication of four Wisconsin poets (Elizabeth Oness, Max Garland, Katharine Whitcomb, and Andrea Potos) and has continued with six chapbooks per year. A prose chapbook series began in 2002 with American Trilogy. This chapbook consists of historical reproductions of the American Declaration of Independence, Constitution, and Bill of Rights, with introductory material by UW Professor Stephen E. Lucas, and an afterword by John P. Kaminski, Director of the Center for the Study of the American Constitution -- published as part of a one year later, university-wide reflection, on the impact of the Sept. 11, 2001, terrorist attacks.

417

Imprinted 50 nm Features Fabricated by Step and Stamp UV Imprinting  

NASA Astrophysics Data System (ADS)

We fabricated features down to 50 nm by UV step and stamp imprint lithography (UV-SSIL). This method enables fast sequential imprinting for large areas operating at room temperature with a low-viscosity material. This allows the patterning of both large micron-scale and submicron-scale structures simultaneously. A low-viscosity polymer allows pattern transfer at moderate pressures, thereby reducing mechanical stress on the stamp and substrate. Processing at room temperature helps to maintain the alignment and to prevent the distortion of the features caused by the thermal expansion of the mold and substrate. A UV-SSIL experiment with a novel photosensitive polymer was performed using a prototype of currently commercially available machines used for both thermal and UV step and stamp imprintings. As a master, we used a transparent quartz stamp (with features down to 50 nm) patterned by electron-beam lithography. The polymer was dispensed on a 100 mm silicon substrate using a syringe-type dispensing system. The results were analyzed by atomic force microscopy and a scanning electron microscopy. The fabricated structures exhibited good lateral and vertical feature replication fidelities.

Haatainen, Tomi; Majander, Päivi; Mäkelä, Tapio; Ahopelto, Jouni; Kawaguchi, Yasuhide

2008-06-01

418

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.

419

Enhanced UV imprint ability with a tri-layer stamp configuration  

Microsoft Academic Search

Soft imprinting lithography enhanced by a UV light (UV-SIL) takes advantages of both nanoimprint and soft lithography. Compared to the related techniques, the UV-SIL process uses single or multi-layer soft stamps and works at room temperature under low pressure (

E. Roy; Y. Kanamori; M. Belotti; Y. Chen

2005-01-01

420

Epoxy resins as stamps for hot embossing of microstructures and microfluidic channels  

Microsoft Academic Search

Fabrication of micro total analysis systems using plastic substrates has become more prevalent in the recent literature with the driving force being the development of inexpensive disposable analytical devices. Hot embossing is one polymer micro-fabrication method that has shown significant promise in this area because identical polymeric devices can be produced using a master to repeatedly stamp an image into

Terry Koerner; Laurie Brown; Ruixi Xie; Richard D. Oleschuk

2005-01-01

421

Automatic correction of the time step in implicit simulations of the stamping process  

Microsoft Academic Search

A specific aspect of simulations of stamping processes is the numerical method adopted to include the non-linearities associated with the frictional contact problem in large deformation plasticity. In fact, convergence problems are frequently encountered, especially when using a quasi-static implicit algorithm. One way of increasing the numerical robustness of these algorithms is to adopt an augmented Lagrangian method to incorporate

M. C Oliveira; L. F Menezes

2004-01-01

422

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

Microsoft Academic Search

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

Mats Oldenburg; Paul Kerström; Greger Bergman; Per Salomonsson

2007-01-01

423

Application of a feasible formability diagram for the effective design in stamping processes of automotive panels  

Microsoft Academic Search

The objective of this study is to propose a method of process design that uses a feasible formability diagram, which denotes the safe region without fracture and wrinkle, for the effective and rapid design of stamping processes. To determine the feasible formability diagram, FE-analyses have been performed for combinations of process variables that correspond to the orthogonal array of design

Dae-Cheol Ko; Seung-Hoon Cha; Sang-Kon Lee; Chan-Joo Lee; Byung-Min Kim

2010-01-01

424

Analysis of an equivalent drawbead model for the finite element simulation of a stamping process  

Microsoft Academic Search

In order to facilitate the three-dimensional finite element analysis for the stamping process, an equivalent drawbead model was adopted to simulate the restraining effects produced by the real drawbead. In the present study, the restraining force exerted by the real drawbead was first computed by the finite element simulation, and the optimum pseudo drawing speed and mesh sizes for both

Fuh-Kuo Chen; Jia-Hong Liu

1997-01-01

425

Towards the three-dimensional FE analysis of rapid prototyping tools for sheet metal stamping process  

Microsoft Academic Search

For low volume production or for rapid prototyping, sheet metal stamping tools can be made by an assemblage of steel sheets or layers and joined by several techniques (such as screws, bolts, brazing, adhesive). However, an important problem in the design and the production of such tools is their mechanical behaviour, in particular the strength of joining techniques which is

M. Oudjene; L. Penazzi; J.-L. Batoz

2007-01-01

426

Planar heterojunction organic photovoltaic diodes via a novel stamp transfer process  

Microsoft Academic Search

Solution-processed, planar heterojunction organic photovoltaic diodes offer several potential advantages over bulk heterojunction structures in relation to electrode selectivity, reduced dark currents and suitability for fundamental studies. They have, however, received less interest in recent years, in large part due to fabrication difficulties encountered for sequential solution deposition steps. In this study, a novel stamp transfer technique that allows ready

Toby A. M. Ferenczi; Jenny Nelson; Colin Belton; Amy M. Ballantyne; Mariano Campoy-Quiles; Felix M. Braun; Donal D. C. Bradley

2008-01-01

427

Artificial intelligence applied to automatic supervision, diagnosis and control in sheet metal stamping processes  

Microsoft Academic Search

In sheet metal forming processes, any disturbance as a slight change in the mechanical properties of the material can be the reason for the occurrence of defects without changing any other of the process parameters.In order to avoid production breakdowns and to improve the reliability of the stamping process, an integrated automatic control has been designed and tested. This includes

C. García

2005-01-01

428

Evaluating of TRB stamping process plans based on theory of fuzzy set barycenter  

Microsoft Academic Search

Generalizing tailor rolled blank applied in panels is one of efficient approach for automobile realizing lightweight, the stamping process plans based on general blank are affirmed even depending on experience, the uncertainty of plans decision making must greatly boost up if TRB will be applied in panels. Theory of fuzzy set barycenter was put forward to decision make plans in

Jitao Du; Yanhua Li; Hongbin Fei

2009-01-01

429

POLYELECTROLYTE MULTILAYER STAMPING IN AQUEOUS PHASE AND NON-CONTACT MODE.  

PubMed

Polyelectrolyte multilayer (PEM) transfer printing has been previously achieved by stamping under dry conditions. Here, we show for the first time, that PEM can be transferred from a stamp to the base substrate under aqueous conditions whereby the two surfaces are in a non-contact mode. Degradable multilayers of (PAA/PEG)(10.5) followed by non-degradable multilayers of (PDAC/SPS)(80.5) were fabricated under acidic pH conditions on either PDMS or glass (stamp), and subsequently transferred over top of another multilayer prepared on a different substrate (base substrate), with a spacing of ~ 200 ?m between the stamping surface and the base substrate. This multilayer transfer was performed under physiological pH conditions. This process is referred to herein as non-contact, aqueous-phase multilayer (NAM) transfer. NAM transfer can be useful for applications such as fabricating three-dimensional (3-D) cellular scaffolds. We attempted to create a 3-D cellular scaffold using NAM transfer, and characterized the scaffolds with conventional and fluorescence microscopy. PMID:21860540

Mehrotra, Sumit; Lee, Ilsoon; Liu, Chun; Chan, Christina

2011-08-01

430

Characterization of interfacial friction in coated sheet steels: influence of stamping process parameters and wear mechanisms  

Microsoft Academic Search

By means of a tensile strip testing system, the nature of interfacial friction in stamping operations were investigated for three different coated sheet steels. Friction coefficient measurements were taken at seventeen distinct operating conditions by varying the sheet strip coating material (lead and zinc), applied lubricant (oil-base lubricants and greases) and pin radii (10 and 20 mm). In addition to

M. R Lovell; Zhi Deng

2002-01-01

431

Fault diagnosis of stamping process based on empirical mode decomposition and learning vector quantization  

Microsoft Academic Search

Sheet metal stamping process is widely used in industry due to its high accuracy and productivity. However, monitoring the process is a difficult task since the monitoring signals are typically non-stationary transient signals. In this paper, empirical mode decomposition (EMD) is applied to extract the main features of the strain signals. First, the signal is decomposed by EMD into intrinsic

A. M. Bassiuny; Xiaoli Li; R. Du

2007-01-01

432

NUMISTAMP: a research project for assessment of finite-element models for stamping processes  

Microsoft Academic Search

This paper describes the objectives and current status of the research project NUMISTAMP currently under development at the International Center for Numerical Methods in Engineering of (CIMNE) located in Barcelona, Spain. The aim of this project is the assesment of different finite element models for simulation of sheet stamping processes. The models currently analyzed include: quasistatic viscoplastic flow and elastoplastic

E. Oñate; J. Rojek; C. García Garino

1995-01-01

433

Laser Stamping of Amorphous Alloys for Use in Motors, Transformers and Security Systems.  

National Technical Information Service (NTIS)

The purposes of the Phase II program is to suggest a design and optimize a proof-of-concept laser stamping machine for cutting of metallic glasses and other thin materials. The laser parameters and the ribbon material handling system will be controlled by...

R. J. Churchill H. P. Groger J. M. Glass

1987-01-01

434

Study of Households in Iowa that Left the Food Stamp Program, A  

Microsoft Academic Search

Iowa experienced sharp decreases in Food Stamp Program (FSP) enrollment in the last years of the 1990s. This period followed significant changes in social assistance programs in the state, the passage of the Personal Responsibility and Work Opportunity Reconciliation Act of 1996, and a period of good economic conditions. Data collected in a 1999 survey conducted in Iowa provide information

Helen H. Jensen; Steven B. Garasky; Cory Wessman; Sarah M. Nusser

2002-01-01

435

CAE analysis approach for split on stamping edge considering sheared edge effect  

Microsoft Academic Search

Aiming at the problem of sheet metal sheared edge fracture appearing before deformation reaches its normal deformation capacity, the mechanism of stamping edge deformation capacity decreasing was studied through analyzing microstruction of sheared edge. Based on stress and strain states of sheared tensile being as the same as that of simple tensile test, propose a modified simple tensile test to

Kangkang Yan; Ping Hu; Yanwu Xu

2009-01-01

436

Food Stamp Quick Response Studies. Categorical Eligibility Descriptive Report. Final Draft.  

ERIC Educational Resources Information Center

This report reviews the impact of the categorical eligibility provision of the Food Security Act of 1985 (FSA) on the program participation, administrative costs, and error rates of the Food Stamp Program (FSP). The Act automatically granted eligibility for the FSP to households composed entirely of participants in the Aid to Families with…

Treesh, Kevin; Ruggles, Patricia

437

Revolution in the Gentleman's Magazine: The Rhetoric Surrounding the Stamp Act  

Microsoft Academic Search

This project examines the contemporary rhetoric surrounding the Stamp Act (1765) from the perspective of the Gentleman's Magazine, the first and arguably most influential magazine of its day. By analyzing the intricate nature of the Gentleman's Magazine, I am attempting to view the social structures, popular thought, and rhetoric that helped influence the events that lead up to the American

James Johnston

438

Fabrication of metallic stamps for injection moulding applications by combining proton beam writing and UV lithography  

Microsoft Academic Search

In this paper, we present the results of resist evaluation for the fabrication of metallic stamps used in the injection moulding of micro\\/nano fluidic devices. The resist was evaluated in terms of its suitability to combine direct proton beam writing (PBW) and UV lithography techniques for incorporating few tens of micron and micron- to millimeter sized features respectively. In a

P. Malar; Jianhong Zhao; J. A. van Kan

439

Food Stamp Program: States Seek to Reduce Payment Errors and Program Complexity.  

National Technical Information Service (NTIS)

In fiscal year 2000, the U.S. Department of Agriculture's Food Stamp Program provided $15 billion in benefits to a monthly average of 17.2 million low-income individuals in the 50 states; Washington, D.C.; Guam; and the Virgin Islands. Agriculture's Food ...

2001-01-01

440

Transfer printing by kinetic control of adhesion to an elastomeric stamp  

Microsoft Academic Search

An increasing number of technologies require large-scale integration of disparate classes of separately fabricated objects into spatially organized, functional systems. Here we introduce an approach for heterogeneous integration based on kinetically controlled switching between adhesion and release of solid objects to and from an elastomeric stamp. We describe the physics of soft adhesion that govern this process and demonstrate the

Matthew A. Meitl; Zheng-Tao Zhu; Vipan Kumar; Keon Jae Lee; Xue Feng; Yonggang Y. Huang; Ilesanmi Adesida; Ralph G. Nuzzo; John A. Rogers

2006-01-01

441

Fault diagnosis using support vector machine with an application in sheet metal stamping operations  

Microsoft Academic Search

This paper presents a new method for fault diagnosis using a newly developed method, support vector machine (SVM). First, the basic theory of the SVM is briefly reviewed. Next, a fast implementation algorithm is given. Then the method is applied for the fault diagnosis in sheet metal stamping processes. According to the tests on two different examples, one is a

Ming Ge; R. Du; Guicai Zhang; Yangsheng Xu

2004-01-01

442

PROGRAMS AFFECTED: CASH ASSISTANCE, FOOD STAMPS, MEDICAL ASSISTANCE ORIGINATING OFFICE: OFFICE OF POLICY, RESEARCH AND SYSTEMS  

Microsoft Academic Search

Summary: Historically, Social Security Retirement, Survivors, and Disability Insurance (RSDI) and Supplemental Security Income (SSI) benefits have increased each year. This is usually true for Railroad Retirement and Veterans Benefits also. The mass change process to take these changes into account for cash assistance, food stamps and medical assistance purposes is described in this transmittal.

FIA ACTION TRANSMITTAL; CHARLES E. HENRY; FIA JOSEPH E. DAVIS

2002-01-01

443

Development of Core Competencies for Paraprofessional Nutrition Educators Who Deliver Food Stamp Nutrition Education  

Microsoft Academic Search

The purpose of this project was to describe the process used for the development of core competencies for paraprofessional nutrition educators in Food Stamp Nutrition Education (FSNE). The development process included the efforts of an expert panel of state and multicounty FSNE leaders to draft the core competencies and the validation of those competencies by FSNE paraprofessionals. The result of

Susan S. Baker; Meredith Pearson; Helen Chipman

2009-01-01

444

Food Stamp Program: Options for Delivering Financial Incentives to Participants for Purchasing Targeted Foods.  

National Technical Information Service (NTIS)

In fiscal year 2007, the Food Stamp Program provided about $30.4 billion in nutrition assistance benefits to 26.5 million individuals. Benefits are issued through Electronic Benefit Transfer (EBT) cards, similar to debit cards, to purchase eligible foods ...

2008-01-01

445

The study on numerical simulation of the laser tailor welded blanks stamping  

Microsoft Academic Search

The stamping process of the tailor welded blank (TWB) was simulated by the software of DYNAFORM. The finite element model of a boxy part was founded, and the forming of different thickness and properties of the material was studied. Meanwhile, the influence of weld seam on forming result was analyzed. The results show that the weld seam model which founded

X. G. Qiu; W. L Chen

2007-01-01

446

46 CFR 52.01-140 - Certification by stamping (modifies PG-104 through PG-113).  

Code of Federal Regulations, 2012 CFR

...hour (rated joules (B.T.U.) per hour output for high temperature water boilers). (2) The information required...so that the data may be easily read. (d) Safety valves shall be stamped as indicated in PG-110 of the...

2012-10-01

447

46 CFR 52.01-140 - Certification by stamping (modifies PG-104 through PG-113).  

Code of Federal Regulations, 2011 CFR

...hour (rated joules (B.T.U.) per hour output for high temperature water boilers). (2) The information required...so that the data may be easily read. (d) Safety valves shall be stamped as indicated in PG-110 of the...

2011-10-01

448

Strawberry notch homologue 2 regulates osteoclast fusion by enhancing the expression of DC-STAMP.  

PubMed

Osteoclasts are multinucleated cells formed by fusion of mononuclear precursors in response to receptor activator of nuclear factor ?B (NF-?B) ligand (RANKL). We found that RANKL induced expression of the DExD/H helicase family corepressor strawberry notch homologue 2 (Sbno2). Previous in vitro studies showed that Sbno2 is induced by IL-10 and is involved in NF-?B repression. However, the role of Sbno2 in vivo and its pleiotropic functions are unknown. Sbno2 gene targeting resulted in normal NF-?B activation by TLR ligands. However, Sbno2-deficient mice exhibited increased bone mass due to impaired osteoclast fusion. Expression of dendritic cell-specific transmembrane protein (DC-STAMP), a critical player in osteoclast fusion, was significantly attenuated, and cell fusion of Sbno2-deficient osteoclasts was rescued by DC-STAMP. Sbno2 directly bound to T cell acute lymphocytic leukemia 1 (Tal1) and attenuated its inhibition of DC-STAMP expression, leading to activation of the DC-STAMP promoter by microphthalmia-associated transcription factor (MITF). Thus, Sbno2 plays a pivotal role in bone homeostasis in vivo by fine-tuning osteoclast fusion. PMID:23980096

Maruyama, Kenta; Uematsu, Satoshi; Kondo, Takeshi; Takeuchi, Osamu; Martino, Mikaël M; Kawasaki, Takumi; Akira, Shizuo

2013-08-26

449

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

450

Food Stamp and school lunch programs alleviate food insecurity in rural America  

Microsoft Academic Search

The Food Stamp and the 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 programs.

Kristin Smith; Sarah Savage

2007-01-01

451

Investigation on induction heating for hot stamping of boron alloyed steels  

Microsoft Academic Search

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. Essential for the complete process is the heating of the blank which is currently carried out with roller hearth furnaces. As a consequence of rising energy costs new and more time and energy effective

R. Kolleck; R. Veit; M. Merklein; J. Lechler; M. Geiger

2009-01-01

452

A new approach for a thermo-mechanical coupled simulation of the hot stamping process  

Microsoft Academic Search

Nowadays, hot stamping of high strength steels is an attractive process for the manufacturing of crash relevant parts in the automotive industry. Due to forming at elevated temperatures, not only can the strength of the formed part be remarkably increased, but also the formability properties be significantly improved and the springback reduced to a minimum. In this paper, a new

K. Kassem-Manthey; H. Spiess; K. Srivastava; K. Wolf

453

Numerical implementation of a constitutive model for simulation of hot stamping  

Microsoft Academic Search

In order to increase the accuracy of numerical simulations of the hot stamping process, an accurate and robust constitutive model is crucial. During the process, a hot blank is inserted into a tool where it is continuously formed and cooled. For the steel grades often used for this purpose, the initially austenitized blank will decompose into different product phases depending

P. Åkerström; G. Bergman; M. Oldenburg

2007-01-01

454

Anisotropic and Mechanical Behavior of 22MnB5 in Hot Stamping Operations  

Microsoft Academic Search

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

A. Turetta; S. Bruschi; A. Ghiotti

2007-01-01

455

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

456

The Food Stamp Program--Overissued Benefits Not Recovered and Fraud Not Punished.  

National Technical Information Service (NTIS)

The authors are issuing this supplement to provide an evaluation of the Department of Agriculture's comments on the July 18, 1977, report to the Congress entitled 'The Food Stamp Program--Overissued Benefits Not Recovered and Fraud Not Punished' (CED-77-1...

1977-01-01

457

Problems Persist in the Puerto Rico Food Stamp Program, the Nation's Largest.  

National Technical Information Service (NTIS)

The report reviews the operation of the Department of Agriculture's food stamp program in the Commonwealth of Puerto Rico. The program began there in July 1974. Since then various management and computer problems have plagued it. The Department and the Co...

1977-01-01

458

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

Microsoft Academic Search

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

Hongqing Shen; Shuhui Li; Guanlong Chen

2011-01-01

459

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

Microsoft Academic Search

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

Paul Glover

2010-01-01

460

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

461

Die medizinische Habilitation  

Microsoft Academic Search

Zusammenfassung Fragestellung: Unter Bezugnahme auf den Wandel von Bildungs- und Gesellschaftsstrukturen ist in letzter Zeit auch die medizinische Habilitation als akademischer Qualifikationsnachweis in Frage gestellt worden. Vor diesem Hintergrund war das Ziel unserer Studie, ein aktuelle Meinungsbild erfolgreicher Habilitanden zu Habilitationsvoraussetzungen, Habilitationsverfahren und Stellenwert der Habilitation zu erhalten sowie potentielle Reformwünsche zu erfassen. Kollektiv und Methodik: Zielgruppe unserer Umfrage stellten

Andreas Weber; Elke Lindner; Dieter Weltle; Gerhard Lehnert

2000-01-01

462

Slurry-pressing consolidation of silicon nitride  

SciTech Connect

A baseline slurry-pressing method for a silicon nitride material is developed. The Si3N4 composition contained 5.8 wt percent SiO2 and 6.4 wt percent Y2O3. Slurry-pressing variables included volume percent solids, application of ultrasonic energy, and pH. Twenty vol percent slurry-pressed material was approximately 11 percent stronger than both 30 vol percent slurry-pressed and dry-pressed materials. The Student's t-test showed the difference to be significant at the 99 percent confidence level. Twenty volume percent (300 h) slurry-pressed test bars exhibited strengths as high as 980 MPa. Large, columnar beta-Si3N4 grains caused failure in the highest strength specimens. The improved strength correlated with better structural uniformity as determined by radiography, optical microscopy, and image analysis.

Sanders, W.A.; Kiser, J.D.; Freedman, M.R.

1988-11-01

463

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

464

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

465

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

466

Die Bedeutung von User Generated Content für die Hotellerie  

Microsoft Academic Search

\\u000a Schlagwörter wie User Generated Content (UGC), Communities, Social Web und Web 2.0 beschäftigen die Tourismusbranche und haben\\u000a auch die Hotellerie bereits fest im Griff. Warum aber erfreut sich UGC im Tourismus so großer Beliebtheit? Handelt es sich\\u000a um einen Fluch oder einen Segen für die Hotellerie? Beeinflusst UGC die Anzahl der Buchungen einer Unterkunft und welche Möglichkeiten\\u000a hat ein Hotel,

Diana Payandeh

467

Near net shape processing of a sintered alumina component: adjustment of pressing parameters through finite element simulation  

Microsoft Academic Search

Near net shape forming of alumina powder by cold die pressing and pressureless sintering was investigated. From experimental data of triaxial compression test of alumina powder, a hyperbolic cap model with a critical state line was proposed for densification of alumina powder at room temperature. For pressureless sintering, the phenomenological model for densification and viscous behavior of alumina powder proposed

HongGee Kim; Olivier Gillia; Pierre Dorémus; Didier Bouvard

2002-01-01

468

Georgians Died on Titanic  

Microsoft Academic Search

Hardly anyone remembers the Dona Paz or the Wilhelm Gustloff, but almost everyone knows about the Titanic. However, few know that four Georgians--three men and a woman--were aboard the doomed Titanic, and that the three men died in the catastrophe. The oldest of the men was a 67-year old philanthropist who many years earlier had lived in Georgia for almost

Wilkes Donald E. Jr

1994-01-01

469

Die Klassifikation der Witterungslagen  

Microsoft Academic Search

Zusammenfassung Für die regionale Klassifikation der Witterungslagen in Gebieten von der Grösse des Alpenraumes wird ein Klassifikationsschema vorgeschlagen, welches auf der Grundlage der im Buch vonFlohn: «Witterung und Klima in Mitteleuropa» veröffentlichten Klassifikation vonLauscher aufgebaut ist. DasLauscher'sche Schema wird von 5 auf 6 Klassen und von 17 auf 33 Typen erweitert wodurch es allgemein für beliebige Gebiete verwendbar wird und

Max Schüepp

1959-01-01

470

Study of the Food Stamp Employment and Training Program: Operations, Funding, and Coordination. Volume 2. Descriptive Profiles of 15 Local Food Stamp Employment and Training (E and T) Programs.  

National Technical Information Service (NTIS)

The design and operation of the Food Stamp Employment and Training (E&T) Program were examined through detailed case studies of 15 local program sites. Study objectives included describing how state and local policymakers organized and designed the delive...

D. Kogan C. M. Casserly L. Anderson E. Hawkins F. Kelley S. Kreutzer K. Rogers C. Wilson

1992-01-01

471

Structure and properties of aluminum alloy 1421 after equal-channel angular pressing and isothermal rolling  

Microsoft Academic Search

Sheets from the aluminum alloy 1421 with an ultrafine-grained (UFG) structure and a weak crystallographic texture were prepared\\u000a by the method of equal-channel angular pressing (ECAP) through a die with channels of a rectangular cross section and by subsequent\\u000a isothermal rolling. Both operations were carried out at a temperature of 325°C. It is shown that severe plastic deformation\\u000a (SPD) leads

A. A. Mogucheva; R. O. Kaibyshev

2008-01-01

472

Gagging the Press through Participant and Closure Orders: The Aftermath of Nebraska Press Association v. Stuart  

Microsoft Academic Search

In Nebraska Press Association v. Stuart the Supreme Court held that trial courts trying to minimize prejudicial publicity to preserve a fair trial must consider alternatives less drastic than gagging the press. This comment will examine post- Nebraska Press cases involving orders that restrict the flow of information concerning judicial proceedings and will suggest standards that focus on whether an

Valerie Bell

1979-01-01

473

What Happens When Someone Dies?  

MedlinePLUS

... call 911. But if a person is dying at home and does not want CPR, calling 911 is ... Health Care Decisions ) if the person is dying at home. Publication Date: September 2012 Page Last Updated: June ...

474

Simulation of press-forming for automobile part using ultra high tension steel  

NASA Astrophysics Data System (ADS)

In recent years, ultra high tension steel has gradually been used in the automobile industry. The development of press-forming technology is now essential by reason of its high productivity and high product quality. In this study, tensile tests were performed with a view to understanding the material properties. Press-forming tests were then carried out with regard to the behaviors of spring back and deep-drawability, and manufacturing a real product. The ultra high tension steel used in the experiments had a thickness of 1 mm and a tensile strength of 1000 MPa. Finally, simulations of spring back, deep-drawability and manufacturing a real product in ultra high tension steel were conducted and evaluated in order to calculate the optimum-press-forming conditions and the optimum shape of the die. FEM with non-linear and dynamic analysis using Euler-Lagrange's element was used for the simulations. It is concluded from the results that (1) the simulations conformed to the results of the experiments (2) the simulations proved very effective for calculating the optimum press conditions and die shape.

Tanabe, I.

2012-08-01

475

The Press and the Committee System  

Microsoft Academic Search

Committees rely on the press to inform the public about their proceedings and decisions; the press relies on committees, their members and staffs as sources of information. Committee members expect their committee work to further their career and to enhance their reputation. Reporters, in addition to competing for the news, feel they have a critical function to perform. What results

Mary Russell

1974-01-01

476

Freedom of the Press and Black Publications.  

ERIC Educational Resources Information Center

Traces the history of the Black press in the United States from pre-Civil War abolitionist literature through the civil rights movement of the 1960s. Discusses both legal and nonofficial efforts to silence Black opinion through repression of the press. (GC)

Snorgrass, J. William

1980-01-01

477

Freedom of the Press and Black Publications.  

ERIC Educational Resources Information Center

|Traces the history of the Black press in the United States from pre-Civil War abolitionist literature through the civil rights movement of the 1960s. Discusses both legal and nonofficial efforts to silence Black opinion through repression of the press. (GC)|

Snorgrass, J. William

1980-01-01

478

Press, censorship, and communication in South Africa  

Microsoft Academic Search

Robert Godlonton - a man seen by many as the real founder of an indigenous Afrikaans and English Press - is also remembered for his efforts to bring about a free Press which would, through communication, promote the interests not just of one section of South Africa.In this article the crucial role of communication as a vehicle for finding peaceful

H. W. Tyson

1987-01-01

479

1979: The Campus Student Press in America.  

ERIC Educational Resources Information Center

|Discusses a number of topics involving the campus press, including the independence of campus publications, censorship issues, the relationship between the student press and the college administrator, the financing of student newspapers, yearbook production and financing, probable future student publications trends, and the need for appropriate…

Ingelhart, Louis E.

1979-01-01

480

Evaluating the aluminum content of pressed dross  

NASA Astrophysics Data System (ADS)

Pressing of skimmed hot drosses in a press is a very popular technology for cooling hot dross and obtaining the maximum in-house recovery of aluminum alloy. As a result of the pressing action, part of the molten aluminum alloy is squeezed out, while the rest of the free metal remains in the pressed skulls. Thus, pressed skulls are a valuable waste product, consisting of 30 70 wt.% free aluminum. Other constituents are aluminum oxide and oxides of alloying metals. Pressed skulls are generally valued on a free-metal recovery basis, which necessarily involves practical determination of their free aluminum content. Because most analytical methods are limited to the laboratory level and representative sub-samples, there is a practical interest in developing a routine, cost-effective, and non-destructive method to predict the free aluminum content in entire pressed skulls, based on their density. To develop such a method, a relation between the bulk density, porosity, and free aluminum content of pressed skulls was established. This article offers a review of those experiments and an analysis of their results.

Kevorkijan, V.

2002-02-01

481

Freedom of the Press vs. Public Access.  

ERIC Educational Resources Information Center

|This book surveys the implications of freedom of the press for a constitutionally rooted public right of access to electronic and print media. Part one provides general perspectives on access to the media, including discussions of access in relation to the Supreme Court, to First Amendment history and theory, to current perceptions of the press,…

Schmidt, Benno C., Jr.

482

Parlament und Presse im Zeitalter Max Webers  

Microsoft Academic Search

At the beginning of the twentieth century the German sociologist Max Weber regarded the new mass phenonmenon of the press as of major interest for sociological research. In 1909–10 he put forward two proposals for collaborative research on a grand scale into the place of the press in society, culture and politics. Only his own lawsuit with a newspaper, and

CRISTIANA SENIGAGLIA

2002-01-01

483

Freedom of the Press vs. Public Access.  

ERIC Educational Resources Information Center

This book surveys the implications of freedom of the press for a constitutionally rooted public right of access to electronic and print media. Part one provides general perspectives on access to the media, including discussions of access in relation to the Supreme Court, to First Amendment history and theory, to current perceptions of the press,…

Schmidt, Benno C., Jr.

484

Teenagers as Victims in the Press  

ERIC Educational Resources Information Center

|Research into press reporting on young people has tended to concentrate on young people as offenders. In contrast, this article focuses on press coverage of teenagers as victims. Reports in two Swedish newspapers (a morning broadsheet and an evening tabloid) were studied over a period of four months and subjected to a qualitative analysis of…

Andersson, Gunvor; Lundstrom, Tommy

2007-01-01

485

Nanofabrication of Nickel Stamp for Replication of Polymer Multilevel Nanolens Arrays via Modified Two-Step Anodization Process  

NASA Astrophysics Data System (ADS)

In the present study, we propose a novel and low-cost nanofabrication technique for a nickel stamp for mass replication of polymer multilevel nanolens (MLNL) arrays. The present nanofabrication technique consists of a modified two-step anodization process and successive electroforming processes. As the first step in the fabrication of the nickel stamp, an aluminum template with multilevel nanodimple (MLND) arrays on an aluminum substrate was precisely fabricated by a modified two-step anodization, in which the processing condition of the second anodization step was changed. A nickel stamp with MLND arrays for the replication of a polymer substrate with MLNL arrays was achieved by electroforming onto the aluminum template with MLND arrays (a nickel template with MLNL arrays) followed by a second electroforming onto the obtained nickel template with MLNL arrays. The fabricated nickel stamp with MLND arrays was successfully used to replicate the polymer substrates with MLNL arrays via a hot embossing process.

Cha, Kyoung Je; Lee, Bong-Kee; Kim, Dong Sung

2011-06-01

486

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

487

Die Blattreblaus auf der Edelrebe  

Microsoft Academic Search

Umfangreiche Infektionsversuche mit Blattrebläusen haben gezeigt, daß entgegen vielfach verbreiteter Meinung die Dichte der Behaarung unserer Edelreben auf den Grad ihrer Anfälligkeit ohne Einfluß ist, daß jedoch bestimmte Sorten die Entwicklung der Rebläuse nach Zeitdauer und Vermehrungsquote hemmen. Bei Reben mit behaarter, offener Triebspitze scheinen die Blattrippen relativ weniger besiedelt zu werden als bei kahlen, geschlossenen Spitzen.

F. A. Schilder

1949-01-01

488

Respecting the dying patient's rights.  

PubMed

Patients who are dying have unique needs and special rights. This article discusses eight basic rights for dying patients. It also gives examples of how hospice and home care providers can focus care to respect the dying patient's rights. PMID:14665971

Pitorak, Elizabeth Ford

2003-12-01

489

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

490

Attacks on the Press in 2001  

NSDL National Science Digital Library

Released by the Committee to Protect Journalists (CPJ), a nonpartisan, nonprofit organization established to "monitor abuses against the press and promote press freedom around the world," Attacks on the Press 2001 documents the deaths, imprisonment, and abuses of journalists around the world within the past year. Prefaced by CPJ board member Anne Garrels with an introduction by CPJ's executive director Ann Cooper, the report contains an overview of media attacks arranged by country, along with three special press freedom reports on Syria, Burma, and Colombia. In addition, the report contains a Ten Worst Enemies of the Press section that focuses attention on individual leaders responsible for the world's worst abuses against the media. Topping the list are Supreme Leader Ayatollah Ali Khamenei of Iran, President Jiang Zemin of China, and Liberian president Charles Taylor.

2002-01-01

491

Elastic-plastic finite element analysis of automotive body panel stamping processes using dynamic explicit time integration scheme  

Microsoft Academic Search

In this article, the elastic-plastic finite element formulations using dynamic explicit time-integration schemes are proposed\\u000a for numerical analysis of automotive body panel stamping processes. A general formulation of finite element simulation for\\u000a complex sheet forming processes with arbitrarily shaped tools is briefly introduced. In finite element simulation of automotive\\u000a body panel stamping processes, the robustness and stability of computation are

D. W. Jung; D. Y. Yang

1999-01-01

492

Analysis of microstructure and mechanical properties of different boron and non-boron alloyed steels after being hot stamped  

Microsoft Academic Search

Hot stamping is a non-isothermal high temperature forming process, in which complex ultra high strength parts are produced, with the goal of no springback. Boron alloyed steels, especially 22MnB5, have been the point of focus for the materials choice in hot stamping. In this paper four high strength non-boron alloyed steels as well as five boron alloyed steels were hot

M. Naderi; M. Ketabchi; M. Abbasi; W. Bleck

2011-01-01

493

Non-Spherical SU8 Microlens Array Fabricated Utilizing a Novel Stamping Process and an ElectroStatic Pulling Method  

Microsoft Academic Search

This paper presents a simple and novel method to fabricate non-spherical SU-8 microlens array utilizing a soft SU-8 stamping approach and an electro-static pulling process. A SU-8 based stamp composed of micro-nozzle arrays and a reservoir structure is first fabricated on a glass substrate using a process of dosage control exposure. The unexposed SU-8 encapsulated in the cross-linked SU-8 shell

Shu-Ming Kuo; Che-Hsin Lin

2009-01-01

494

THE IMPACT OF STAMP DUTY REDUCTIONS IN FIRST-HOME BUYER MARKETS - A WESTERN AUSTRALIAN CASE STUDY  

Microsoft Academic Search

This paper examines the impact of changes in stamp duty in first-home buyer markets by focusing upon 2004 policy initiatives of the Western Australian (W.A.) State Government. The paper examines the impact of policy on demand in first-home buyer markets. Stamp duty is a taxation instrument that can be used by governments to intervene in housing markets by directly influencing

Gregory J Costello

2006-01-01

495

Numerical simulation and experimental verification in the use of tailor-welded blanks in the multi-stage stamping process  

Microsoft Academic Search

Various social requirements have extended the use of tailor-welded blanks in the automotive industry. The welding of blanks with different material grades, thickness, strength and coatings had introduced many challenging formability problems for the stamping process of tailor-welded blanks. However, in some situations the multi-stage process is a very effective solution for the stamping of tailor-welded blanks with a relatively

H. M. Jiang; S. H. Li; H. Wu; X. P. Chen

2004-01-01

496

Dying with dignity.  

PubMed

Death is a theme of central importance in all cultures, but the manner in which it is interpreted varies from society to society. Even so, traditional cultures, including Christian, Hindu and Jain religious traditions, exhibited a positive attitude to death and did not look upon it in a dualistic framework of good vs bad, or desirable vs undesirable. Nor was pessimism the dominant mood in their thinking about death itself. A fundamental paradigm shift occurred in the West in the eighteenth century when death was desacralized and transformed into a secular event amenable to human manipulation. From those early beginnings, dying and death have been thoroughly medicalized and brought under the purview of high technology in the twentieth century. Once death is seen as a problem for professional management, the hospital displaces the home, and specialists with different kinds and degrees of expertise take over from the family. Everyday speech and the religious idiom yield place to medical jargon. The subject (an ageing, sick or dying person) becomes the object of this make-believe yet real world. As the object of others' professional control, he or she loses the freedom of self-assessment, expression and choice. Or, he or she may be expected to choose when no longer able to do so. Thus, not only freedom but dignity also is lost, and lawyers join doctors in crisis manipulation and perpetuation. Although the modern medical culture has originated in the West, it has gradually spread to all parts of the world, subjugating other kinds of medical knowledge and other attitudes to dying and death.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:1519095

Madan, T N

1992-08-01

497

Stamp wound assay for studying coupled cell migration and cell debris clearance.  

PubMed

A new method for studying wound healing under realistic conditions in vitro was developed. The method involves creating defined patterns of damaged cell debris with poly(dimethyl)siloxane (PDMS) stamping. This novel assay permitted the quantification of wound healing rates in the presence of cell debris. Experimental results with this assay suggest that cell migration in the presence of cell debris is a two step process requiring (1) non-muscle myosin II-dependent cell clearance followed by (2) cell migration into newly cleared wound areas. The novel stamp wound assay allows the study of coupled cell migration and debris clearance and is a more realistic wound healing assay in vitro. PMID:20961056

Lee, Jiyeon; Wang, Yu-Lin; Ren, Fan; Lele, Tanmay P

2010-10-20

498

Fabrication of metallic stamps for injection moulding applications by combining proton beam writing and UV lithography  

NASA Astrophysics Data System (ADS)

In this paper, we present the results of resist evaluation for the fabrication of metallic stamps used in the injection moulding of micro/nano fluidic devices. The resist was evaluated in terms of its suitability to combine direct proton beam writing (PBW) and UV lithography techniques for incorporating few tens of micron and micron- to millimeter sized features respectively. In a first step PBW is used to generate the fine features with smooth sidewall profiles in AR-P 3250, here the resist shows negative behavior. Following PBW, masked i-line UV lithography was used to create larger features to complete the device design, here the AR-P 3250 acts as a positive resist. After developing, the resist was used to generate the final mould through Ni electroplating, resulting in a high quality metallic stamp.

Malar, P.; Zhao, Jianhong; van Kan, J. A.

2012-02-01

499

Directed self-assembly of quantum structures by nanomechanical stamping using probe tips  

NASA Astrophysics Data System (ADS)

We demonstrate that nanomechanically stamped substrates can be used as templates to pattern and direct the self-assembly of epitaxial quantum structures such as quantum dots. Diamond probe tips are used to indent or stamp the surface of GaAs(100) to create nanoscale volumes of dislocation-mediated deformation, which alter the growth surface strain. These strained sites act to bias nucleation, hence allowing for selective growth of InAs quantum dots. Patterns of quantum dots are observed to form above the underlying nanostamped template. The strain state of the patterned structures is characterized by micro-Raman spectroscopy. The potential of using nanoprobe tips as a quantum dot nanofabrication technology are discussed.

Taylor, Curtis; Marega, Euclydes; Stach, Eric A.; Salamo, Gregory; Hussey, Lindsay; Muñoz, Martin; Malshe, Ajay

2008-01-01

500

Directed self-assembly of quantum structures by nanomechanical stamping using probe tips.  

PubMed

We demonstrate that nanomechanically stamped substrates can be used as templates to pattern and direct the self-assembly of epitaxial quantum structures such as quantum dots. Diamond probe tips are used to indent or stamp the surface of GaAs(100) to create nanoscale volumes of dislocation-mediated deformation, which alter the growth surface strain. These strained sites act to bias nucleation, hence allowing for selective growth of InAs quantum dots. Patterns of quantum dots are observed to form above the underlying nanostamped template. The strain state of the patterned structures is characterized by micro-Raman spectroscopy. The potential of using nanoprobe tips as a quantum dot nanofabrication technology are discussed. PMID:21730527

Taylor, Curtis; Marega, Euclydes; Stach, Eric A; Salamo, Gregory; Hussey, Lindsay; Muñoz, Martin; Malshe, Ajay

2007-11-29