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Fe, C 1.0 (wt%), hypereutectoid alloy
This secondary electron SEM image shows the cementite delineating prior austenite grain boundaries with a thin layer. The amount of proeutectoid phase is very low, with the majority of the area being taken by the pearlite eutectoid. Again each pearlite cell has a different orientation with the ferrite phase being selectively etched.
Author(s): Prof T W Clyne, Department of Materials Science an

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Poly (lactic-co-glycolic acid) (PLGA) porous scaffold for tissue engineering. Enlargement of a Pore.
The patients own cells are seeded onto the scaffold and allowed to attach and start producing new bone. The construct is implanted into the defect site, where eventually the polymer will biodegrade and be completely removed, leaving a natural autogenous bone graft. This technique is particularly useful for large defects, or where the host bed is compromised due to disease, although it is still at the research stage. Average Pore Size 350-550 micrometre, porosity estimated at 35-45%.
Author(s): V A Mellon, Department of Materials Science and Me

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Alporas' closed cell aluminium foam
Additions are made to molten aluminium or aluminium alloy to modify the melt viscosity and make it suitable for foaming. 1 to 3 wt% titanium hydride is then added to the melt, and this foams the melt by releasing hydrogen. The foamed melt solidifies to yield a closed cellular structure with an average cell size of 4.5 mm
Author(s): Dr V Gergely, Department of Materials Science and

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Resistance spot weld in T3
Macrograph of a resistance spot weld made in two plates of 1,5 mm thickness. T3 - solution heat treatment, cold working and natural ageing. AA2024-T3 RSW x40 Keller's reagent interferential contrast Base material characterised by elongated, plastically deformed grains. Presence of dendritic grains in the weld. The line on the left is the original plates separation line. The two short lines on the right (inside the weld) are solidification cracks.
Author(s): J Adamowski, Department of Production Engineering,

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Fe, C 1.0 (wt%), hypereutectoid alloy
This secondary electron SEM image shows the cementite delineating prior austenite grain boundaries with a thin layer. The amount of proeutectoid phase is very low, with the majority of the area being taken by the pearlite eutectoid. Again each pearlite cell has a different orientation with the ferrite phase being selectively etched.
Author(s): Prof T W Clyne, Department of Materials Science an

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Poly (lactic-co-glycolic acid) (PLGA) porous scaffold for tissue engineering.
The patients own cells are seeded onto the scaffold and allowed to attach and start producing new bone. The construct is implanted into the defect site, where eventually the polymer will biodegrade and be completely removed, leaving a natural autogenous bone graft. This technique is particularly useful for large defects, or where the host bed is compromised due to disease, although it is still at the research stage. Average Pore Size 350-550 micrometre, porosity estimated at 35-45%.
Author(s): V A Mellon, Department of Materials Science and Me

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Poly (lactic-co-glycolic acid) (PLGA) porous scaffold for tissue engineering.
The patients own cells are seeded onto the scaffold and allowed to attach and start producing new bone. The construct is implanted into the defect site, where eventually the polymer will biodegrade and be completely removed, leaving a natural autogenous bone graft. This technique is particularly useful for large defects, or where the host bed is compromised due to disease, although it is still at the research stage. Average Pore Size 350-550 micrometre, porosity estimated at 35-45%.
Author(s): V A Mellon, Department of Materials Science and Me

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Poly (lactic-co-glycolic acid) (PLGA) porous scaffold for tissue engineering.
The patients own cells are seeded onto the scaffold and allowed to attach and start producing new bone. The construct is implanted into the defect site, where eventually the polymer will biodegrade and be completely removed, leaving a natural autogenous bone graft. Average Pore Size 100-300 micrometre+D7, porosity estimated at 65%.
Author(s): V A Mellon, Department of Materials Science and Me

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SEM image of open cell polyurethane foam
If a gas is injected into a liquid it forms a cellular foam structure. When a thermoset prepolymer of low viscosity is foamed, the polymer can drain from the cell walls (driven by surface tension) before it sets at the cell edges, leaving an open-celled foam. The cell edges have three concave sides, giving rise to the tri-cuspid cross section visible at the bottom of this image. The average co-ordination number for the nodes (where struts meet) is four, giving tetrahedral junctions.
Author(s): J A Curran, Department of Materials Science and Me

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NASA KSNN What do plants need to grow?
By definition, a plant is a living thing that produces its own food through photosynthesis. This process uses carbon dioxide and water. Trapping light from the Sun, plants are able to change sunlight's energy into useable chemical energy. Not only is chemical energy produced, but oxygen is a by-product of photosynthesis. Plants are essential to the balance of life on Earth - and to life, as we know it, on other planets.
Author(s): No creator set

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Medicine Games: Control of the Cell Cycle
Play a game and find out about a Nobel Prize awarded discovery or work! In this game you are to take on the job as a Cell Division Supervisor. Are you familiar with the different phases in the cell cycle? If not, maybe you should pay extra attention to the image of the cell cycle in the introduction.
Author(s): No creator set

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Video Blog of Anne Frank
This video is a tribute to Anne Frank and all that she did for world peace. Music plays in the background as a series of photos show her short life. A sad video, but one students should see while studying this time period or reading her diary (Running Time 3:16).
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2012 March 13 - Part 3

Prof. Adams uses curvature arguments to compare the energy eigenstates of finite and infinite square wells and asks questions regarding the physicality of the energy eigenstates of an infinite square well.


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Herhalingsbundels Planètes 7-10 - Quartier étoile 5
quartier_etoile_5.jpg

Dit zijn herhalingsbundels bij het tweede deel van Quartier étoile 5.

Ze bevatten per planète minstens de woordenlijst in kolommen zodat ze de vertaling kunnen noteren, maar soms ook wat simpele extra …


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Lecture 16 - 11/18/2010
Lecture 16
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Article :: Building Adobe WorkflowLab, Part 2: Planning for the Design of WorkflowLab
Continuing their series on the design and creation of WorkflowLab, Aaron Pedersen, James Polanco, and Doug Winnie, the authors of Adobe Flash Platform from Start to Finish: Working Collaboratively Using Adobe Creative Suite 5, discuss how they captured lightning in a bottle, focusing on planning ahead before doing any of the production work.
Author(s): No creator set

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Article :: Adobe Digital Imaging How-to #52: Simplifying the Menus in Photoshop CS5
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Article :: Making Transformations in Adobe Illustrator CS4
The best part of drawing on a computer is that you rarely have to start over. Whether you've changed your mind about an angle or you drew a bunch of repeated objects too small (oops), Illustrator makes modifying your artwork very easy. Mordy Golding discusses how to use Illustrator's transform capabilities to manipulate any number of objects onscreen.
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Transport Session Outline
Part Seven of Greening Business: Transport often makes up a major part of an organization’s carbon footprint, whether through commuting of employees, business travel, or transport of materials, products or waste. Organizations can reduce this component of their carbon footprint through a wide range of actions including more fuel efficient company cars, increased use of video conferencing, change of source location of materials, reduction in off-site waste transport, and incentives to reduce s
Author(s): Keele University,Stephen Whitfield,Dr Zoe Robinson

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Transport Question Sheet
Question Sheet for Part Seven of Greening Business: Transport often makes up a major part of an organization’s carbon footprint, whether through commuting of employees, business travel, or transport of materials, products or waste. Organizations can reduce this component of their carbon footprint through a wide range of actions including more fuel efficient company cars, increased use of video conferencing, change of source location of materials, reduction in off-site waste transport, and inc
Author(s): Keele University,Stephen Whitfield,Dr Zoe Robinson

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