Iconocast Logo

Welcome To Iconocast

How to add a URL link from your web site to the Iconocast web sites

Virtual tour of Southern California



 

Recent News and Articles on the Keywords: 2006 + november + 0.23  Related to the article below (Last Update: 8/4/2008)

Oar-inspired pair on golden pond
The Australian, Australia - Jul 30, 2008
"We only won the 2007 world championships by 0.23 of a second. "China have a very strong crew and will be performing this year on their home turf. ...
China - * Shanghai metals resist steep drop in LME futures overnight
Forbes, NY - Jul 24, 2008
... in Shanghai is a sign that the spot market is finally tightening, after dismal demand brought June imports to their lowest level since November 2006. ...
Investor Relations Earnings Release
MarketWatch - Jul 31, 2008
0.24 $ 0.23 $ 0.47 $ 0.45 XCEL ENERGY INC. AND SUBSIDIARIES Notes to Investor Relations Release (Unaudited) Due to the seasonality of Xcel Energy's ...XEL
Mothers Work Reports Third Quarter Fiscal 2008 Earnings
Earthtimes (press release), UK - Jul 29, 2008
Before debt repurchase and restructuring charges, we are projecting fourth quarter earnings per share (diluted) of between a loss of $(0.23) and $(0.39) per ...MWRK
Pfizer Reports Second-Quarter 2008 Results
FOXBusiness - Jul 23, 2008
Since its approval in the US in May 2006, Chantix/Champix has been approved in 76 countries and has been used by more than six million patients, ...PFE
Pembina completes Horizon Pipeline, increases distribution
Canada NewsWire (press release), Canada - Jul 30, 2008
Work on the $400 million project, which began in November 2006, was completed on July 1, 2008, on schedule. Pembina expects the Horizon Pipeline to ...ASX:HZN - TSE:PIF.UN
Loblaw Companies Limited reports second quarter 2008 results
Canada NewsWire (press release), Canada - Jul 25, 2008
Future Accounting Standards Goodwill and Intangible Assets In November 2007, the CICA issued amendments to Section 1000 "Financial Statement Concepts", ...TSE:L
SunPower Reports Record Second-Quarter 2008 Results
Earthtimes (press release), UK - Jul 17, 2008
1, 2008 2008 20072008 2007 Basic: GAAP net income (loss) per share $0.36$0.16 $(0.07)$0.52 $(0.06) Reconciling items: Stock-based compensation expense 0.23 ...SPWR
Pinnacle Financial Reports Record Loan Growth, Strong Asset ...
MarketWatch - Jul 15, 2008
The annualized provision for loan losses expressed as a percentage of average loans was 0.38 percent for the second quarter of 2008 compared to 0.23 percent ...PNFP
ProEx Reports Second Quarter Results
Canada NewsWire (press release), Canada - Jul 29, 2008
The Company has also hedged 15000 GJ's per day of its natural gas volumes for the period November 1, 2008 to March 31, 2009 resulting in a net floor of ...TSE:PXE
Source: Google News

[PDF] The Individual Alternative Minimum Tax: Historical Data and Projections updated November 2006 -
G Leiserson, J Rohaly - Washington: Urban Institute - tpcprod.urban.org
... Tax: Historical Data and Projections updated November 2006 Greg Leiserson ... Table 1
Aggregate AMT Projections, 2006-2017 1 ... 1.3 1978 0.50 1.5 1979 0.23 1.2 1980 ...

[PDF] Interaction between Objective and Subjective Occupational Conditions Affecting Physical Health of …
JLD Lu - Journal of International Women?s Studies, 2006 - iiav.nl
... Mental work 0.39 1.48 0.14 2.80 0.01 Autonomy in accomplishing work 0.23 1.80 0.13
1.72 0.09 Close Monitoring -0.28 0.76 0.13 -2.11 0.04 ... 8 #1 November 2006 93 ...

… medical problem 38 (4.5%), active alcohol use 21 (2.5%), IV drug use 2 (0.23%), age> 70 years 6 ( …
A Sood, V Midha, N Sood, M Bansal, P Ludhiana - children, 1995 - medind.nic.in
... medical problem 38 (4.5%), active alcohol use 21 (2.5%), IV drug use 2 (0.23%),
age >70 ... 320 Indian Journal of Gastroenterology 2006 Vol 25 November - December ...
-

[PDF] … .: 197090AAI Date Received: November 10, 2004 Application No.: 96030079 Date Issued: January 9, 2006
R Official, RE Kent, V President? - yosemite.epa.gov
... Revision Date Received: November 8, 2006 Revision Date Issued: January
2, 2007 Purpose of Revision: Administrative Amendment This ...
-

[PDF] … Regimes ON A Banana AND Cane Farm IN THE Wet Tropics, Queensland November 2002 TO July 2006
JW Faithful, J Brodie, A Hooper, P Leahy, G Henry, … - actfr.jcu.edu.au
... Flow and rainfall data were logged between 27 November 2002 and 14 March 2006,
at Farm 2148 and 11 January 2003 and 30 June 2006, at Farm 0204. ...

The spectroscopic evolution of V2362 Cyg (Nova Cygni 2006) in the first 15 months after the outburst
R Poggiani - New Astronomy, 2008 - Elsevier
... 211, 2006 November 3, 4800?9800, 4.00. ... The epoch of maximum is MJD = 53831.66 (2006
April 6), with ... V band calibrations: ? Cohen (1988), M V =(2.41?0.23)logt 2 ...

HYDROLOGIC BEHAVIOR OF VEGETATED ROOFS 1 -
TL Carter, TC Rasmussen - Journal of the American Water Resources Association, 2006 - Blackwell Synergy
... 2006 ... November 19, 2003 5.38 3.27 183.09 133.16 49.93 0.56 0.5 3 1.07 February
6, 2004 2.69 1.32 74.95 -44.90 119.85 0.21 0.23 0.93 ...

Radical cystectomy with ileal conduit diversion: early prospective evaluation of the impact of … -
JJ Rhee, S Lebeau, M Smolkin, D Theodorescu - BJU International, 2006 - Blackwell Synergy
... Lebeau, Mark Smolkin, Dan Theodorescu (2006) Radical cystectomy ... During the period
from November 2003 to August ... age between the groups (P = 0.23), although the ...

Proper Motion of Pulsar B1800-21 -
WF Brisken, M Carrillo-Barragan, S Kurtz, JP … - The Astrophysical Journal, 2006 - UChicago Press
... The Astrophysical Journal, 652:554?558, 2006 November 20 ? 2006. ... Received 2006 June
7; accepted 2006 July 17. ... with the H ii region G8.14+0.23 (IRAS 17599 ...

[PDF] Turn-over in pulsar spectra around 1 GHz -
J Kijak, Y Gupta, K Krzeszowski - Arxiv preprint astro-ph/0611445, 2006 - arxiv.org
... Received 27.07.2006; accepted 25.10.2006 ... The observations were made at several epochs
between November 2004 and ... and pulsar age (? peak ? t -0.23?0.05 ). ...
-

Source: Google Scholar
 
 

Scientists at the Max Planck Institute of Colloids and Interfaces have found a new design principle at the nanoscale which is responsible for the enormous stability and deformabilty of bone.

Article Date: 18 Nov 2006 - 18:00pm (PST)
They found that a piece of bone stretches more than the fibres and much more than the mineral it is composed of. The scientists applied a novel technique based on the use of a brilliant beam of X-ray photons at the European Synchrotron Radiation Facility in Grenoble, France. The same bone tissue may deform differently at different scales because of the shearing of a thin glue layer between the fibres that make up bone, as well as between the tiny mineral particles that lie inside a fibre. This construction allows bones to sustain large strains without breaking, despite being made of essentially rigid units at the molecular level (PNAS, November 9, 2006).

The bones in vertebrate skeletal systems need to have two main properties which at first appear to be contradictory. First, they must be rigid - a limb bone should not flop over under the weight of the bearer - and secondly, they must be tough and energy absorbing - a bone should not splinter into small fragments when dealt a blow. Usually, substances like rubber that can absorb a lot of energy by molecular conformational changes are, by the same mechanism, easy to stretch. Conversely, materials like ceramics are very rigid due to tight ionic bonds between atoms, but if the bonds break locally, runaway cracks can split the material in a brittle manner. Now in bone, half (by volume) is a stretchable fibrous protein called collagen and the other half a brittle mineral phase called apatite. By as yet incompletely understood construction strategies, such biomineralized tissues exhibit remarkably high strength and toughness necessary for their physiological functioning.

Article continues below and (thank you)

 
The key to understanding how this optimal construction is achieved lies in the hierarchical arrangement of organic and inorganic molecules from the nanoscale (1 level up from atomic level) up to the micron level. Using a very bright beam of photons emitted relativistically from an accelerated stream of electrons, scientists at the Max Planck Institute of Colloids and Interfaces were able to generate - in real time - diffraction image sequences of molecular and supramolecular rearrangements in bone, under applied stress. They then used these diffraction spectra as quantitative strain measures at the atomic and higher levels to build up a hierarchical picture of bone deformation.

The scientists found that the hierarchical structure of bone leads to a hierarchical deformation, as shown in Figure 1 below. Specifically, a unit of strain applied to the whole bone is absorbed by soft layers at successively lower length scales, until less than a fifth of that strain unit is actually seen by the mineral phase. Essentially, from the atomic to the micrometer level, bone consists of rigid units joined together by a soft phase, where most of the deformation occurs. These composite structures form a single rigid unit at the next level and so on, enabling the tissue to sustain large strains despite being comprised of essentially not deformable particles at the atomic level. The brittle apatite phase is thus shielded from excessive loads, and does not break.
 
A second unexpected finding was that the tiny mineral crystallites are nonetheless very strong, capable of carrying more than 2 - 3 times the breakage load of bulk apatite. Essentially, the small size of the particles means they cannot contain any large cracks. Since their strength is hence not "defect - limited", it can approach the values for a perfect crystal. While the existence of such a reinforcing effect is known in composite materials science, this is the first experimental evidence for this effect in biomaterials - small particles resist failure better. The natural design principles quantitatively observed here in bone - hierarchical deformation, matrix sensitivity, and nanoscale strengthening - may provide guidelines for the development of bio-inspired and new nanocomposite materials as well. Furthermore it may help bone biologists to understand how a molecular level change can cause whole bones to become more prone to fracture in diseases like osteoporosis.

###

Original work:

Himadri S. Gupta, Jong Seto, Wolfgang Wagermaier, Paul Zaslansky, Peter Boesecke, and Peter Fratzl

Cooperative deformation of mineral and collagen in bone at the nanoscale

PNAS, November 9, 2006, 10.1073/pnas.0604237103

Contact: Dr. Himadri Gupta
Max-Planck-Gesellschaft
 
Google
Web www.iconocast.com
 
 
 

 

Continue News With: News9 ; News9A


ADVERTISEMENT

Iconocast is about learning and teaching without borders; we offer eMarketing, Internet Advertising, Internet Marketing, Search Engine Optimization, Search Engine Marketing, Online Branding, and eMarketing News Services. Home

 

 © 2002-2006

Keywords::

Contact Iconocast

Home Page