Navigation Links
How the kilogram has put on weight
Date:1/6/2013

grams so, unfortunately, we can't all take a couple of kilograms off our weight and pretend the Christmas over-indulgence never happened.

"But mass is such a fundamental unit that even this very small change is significant and the impact of a slight variation on a global scale is absolutely huge. There are cases of international trade in high-value materials - or waste - where every last microgram must be accounted for.

"What we have done at Newcastle is effectively give these surfaces a suntan. By exposing the surface to a mixture of UV and ozone we can remove the carbonaceous contamination and potentially bring prototype kilograms back to their ideal weight."

The kilogram is one of the seven SI base units from which all other units can be derived and is the only one which is measured against a physical object the IPK all others are standardised against known constants.

The Newcastle team are now moving on to study the addition of mercury from the atmosphere, something Professor Cumpson first identified while working at the NPL in the 1990's. But it is the development of techniques such as XPS which has allowed them to accurately measure how the build up of chemicals such as hydrocarbons can be most effectively removed.

Newcastle University hosts the 3million National XPS service funded by the Engineering and Physical Sciences Research Council (EPSRC).

Using a Theta-probe XPS machine the only one of its kind in the world - Professor Cumpson and Dr Sano showed how the UV/ozone wash could be used to remove contamination without damaging the platinum surface. "The Theta probe allows us to look at the composition of very thin layers by measuring the angle at which the electrons emerge from it," explains Professor Cumpson.

"Rather like an MRI scanner, it takes a cross section of the material but at an atomic level. The second part of the machine is the Argon cluster ion gun which fires charged 'droplets', each containing about a thousand
'/>"/>

Contact: Peter Cumpson
peter.cumpson@ncl.ac.uk
44-019-122-27911
Newcastle University
Source:Eurekalert

0

GOOD

Page: 1 2 3

Related biology technology :

1. UK takes the lead in redefining the kilogram
2. Weight Loss: Natural Way To Lose More Weight Than With Diet & Exercise Alone - Consumer Reporter Releases A New Video
3. Green Coffee Extract Continues Dominance Amongst Summers Top Weight Loss Products
4. Weightlessness weighs heavy on genes a flys perspective
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/23/2013)... BROWNSBURG, Ind. , May 23, 2013  Rahal ... leader in human cord blood stem cell banking and ... sponsor of the No. 16 Acorn Stairlifts Indy car ... is for the remainder of the IZOD IndyCar 2013 ... Racing (RLL) will work to support awareness of umbilical ...
(Date:5/23/2013)... 23, 2013 PI’s new LPS-24 ... provide 15 mm travel range with closed-loop sensor ... dimensions make these new positioners the ideal choice ... vacuum rated version is also available. , ... datasheets can be found at: , http://www.physikinstrumente.com/en/products/prdetail.php?sortnr=1000745&prw-lps24 ...
(Date:5/23/2013)... Calif. , May 23, 2013  Saddleback Memorial ... recently became the first hospital on the West ... technology. This new surgical option provides women with a ... Marc Winter , M.D., a ... and surgeon and medical director of minimally invasive surgery ...
(Date:5/23/2013)... , May 23, 2013 BioTrends Research ... advisory firms for specialized biopharmaceutical issues, finds that, ... infectious disease specialists reported that in the past ... intentionally delaying treatment) in anticipation of the next ... months ago, when only 6 percent reported that ...
Breaking Biology Technology:StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 2StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 3Precision Positioning System Uses Miniaturezed Piezo Linear Motor: LPS-24 Linear Stage by PI 2Saddleback Memorial Surgeon First on the West Coast to Perform Single-Site Robotic Hysterectomy 2Saddleback Memorial Surgeon First on the West Coast to Perform Single-Site Robotic Hysterectomy 3The Majority of Physicians that Treat Hepatitis C Virus (HCV) Have Begun "Warehousing" and Preparing Their HCV Patients for the Next Generation of HCV Treatments 2The Majority of Physicians that Treat Hepatitis C Virus (HCV) Have Begun "Warehousing" and Preparing Their HCV Patients for the Next Generation of HCV Treatments 3
... ... ... ... ...
... ... ... ... ...
... ... ... ... ...
Cached Biology Technology:Zenith Biotech Introducing Novel StemQ(R) Hepatic and Neural Models for Use in Drug Discovery, Metabolism and Toxicology Studies, at The 49th Annual Meeting and ToxExpo In Salt Lake City, Utah, March 7-11, 2010, Booth #136 2Zenith Biotech Introducing Novel StemQ(R) Hepatic and Neural Models for Use in Drug Discovery, Metabolism and Toxicology Studies, at The 49th Annual Meeting and ToxExpo In Salt Lake City, Utah, March 7-11, 2010, Booth #136 3Zenith Biotech Introducing Novel StemQ(R) Hepatic and Neural Models for Use in Drug Discovery, Metabolism and Toxicology Studies, at The 49th Annual Meeting and ToxExpo In Salt Lake City, Utah, March 7-11, 2010, Booth #136 4Zenith Biotech Introducing Novel StemQ(R) Hepatic and Neural Models for Use in Drug Discovery, Metabolism and Toxicology Studies, at The 49th Annual Meeting and ToxExpo In Salt Lake City, Utah, March 7-11, 2010, Booth #136 5Zenith Biotech Introducing Novel StemQ(R) Hepatic and Neural Models for Use in Drug Discovery, Metabolism and Toxicology Studies, at The 49th Annual Meeting and ToxExpo In Salt Lake City, Utah, March 7-11, 2010, Booth #136 6Zenith Biotech Introducing Novel StemQ(R) Hepatic and Neural Models for Use in Drug Discovery, Metabolism and Toxicology Studies, at The 49th Annual Meeting and ToxExpo In Salt Lake City, Utah, March 7-11, 2010, Booth #136 7MO BIO Laboratories, Inc. Launches PowerBiofilm(TM) DNA and RNA Isolation Kits 2MO BIO Laboratories, Inc. Launches PowerBiofilm(TM) DNA and RNA Isolation Kits 3Concord Medical to Report Fourth Quarter and Fiscal Year 2009 Unaudited Financial Results on Thursday, March 18, 2010 2Concord Medical to Report Fourth Quarter and Fiscal Year 2009 Unaudited Financial Results on Thursday, March 18, 2010 3Concord Medical to Report Fourth Quarter and Fiscal Year 2009 Unaudited Financial Results on Thursday, March 18, 2010 4Concord Medical to Report Fourth Quarter and Fiscal Year 2009 Unaudited Financial Results on Thursday, March 18, 2010 5Concord Medical to Report Fourth Quarter and Fiscal Year 2009 Unaudited Financial Results on Thursday, March 18, 2010 6
(Date:5/24/2013)... of the world,s largest and fastest growing open-access publishers, ... Frontiers in Physics . , A broad scope journal ... provide an open-science and interactive web platform for the ... articles. , Frontiers, real-time and interactive peer-review enables ... article types. With an average of three months from ...
(Date:5/24/2013)... by avoiding detection and destruction by the immune system. ... cancer cells; however, there are many factors that cause ... cells are immune cells that function to suppress the ... Journal of Clinical Investigation , researchers led by Ronald ... that infiltrate tumors express proteins that can be targeted ...
(Date:5/24/2013)... one French Quarter neighborhood of New Orleans to determine ... Hurley, PhD, Assistant Professor of Audiology at LSU Health ... LSUHSC doctor of audiology student, recommend that people use ... case study is published online in the current issue ... important part of an audiologist,s practice is aiding patients ...
Breaking Biology News(10 mins):Frontiers launches new open-access journal in physics 2Frontiers launches new open-access journal in physics 3Please do try this at home 2
... changed its wing patterns to mimic neighbouring species and avoid ... of European scientists. The study is published today (14 August ... evolutionary thinkers, including Wallace, Bates and Darwin, have all wondered ... same patterns of warning colouration. Now for the first time, ...
... A new study shows that as climate change enhances ... could stimulate soil micro-organisms leading to a release of stored ... from the Centre for Ecology & Hydrology and the University ... August 2011) in the scientific journal Nature Climate Change ...
... Lithuania, July 6, 2011 Neurotechnology , ... introduced VeriSpeak , the company,s new voice ... VeriSpeak Software Development Kit (SDK) and as a ... 4.1 multi-biometric SDK, also announced today. VeriSpeak combines ...
Cached Biology News:Research reveals how butterflies copy their neighbors to fool birds 2Increased tropical forest growth could release carbon from the soil 2Neurotechnology Introduces VeriSpeak Voice Identification Technology 2Neurotechnology Introduces VeriSpeak Voice Identification Technology 3Neurotechnology Introduces VeriSpeak Voice Identification Technology 4
...
... Fixed clamp trays and universal ... Magnetic drive Shaking ... 25 mm amplitude ... to 2000 ml, including Fernbach flasks ...
... and Sartolab P20 plus,for Reliable Sterile Filtration ... attached to a,membrane pump or tube pump, ... liter of media,and aqueous solutions. The ... and an automatic de-aeration,ensures high flow rates ...
... allows for rapid, convenient, and efficient Denatured ... process utilizes a spin column to make ... concentration of proteins which were electro-eluted in ... ion exchangers, offering high binding capacity fo ...
Biology Products: