Navigation Links
A crystal clear view of chalk formation
Date:1/23/2009

urchin forms its spines. As the tiny clusters with which crystallization starts are stable, organisms would have to intervene only at this early stage to influence the structure. They might use the pH level or biomolecules to do this.

The theory of crystallization that has prevailed so far leaves little room for influencing the arrangement of the ions in the regular crystal lattice early on. It assumes that the ions do not group together until a certain concentration has been exceeded. If these clusters do not reach a minimum size, they break apart. It is only when they can get beyond the size of the "critical crystal nucleus" that it becomes possible for the nucleus to grow into a crystal. The earliest point at which the crystal structure could be influenced would therefore be the critical nucleus.

The researchers in Golm used calcium phosphate and calcium oxalate to test whether other minerals also follow this crystallization pathway. Calcium phosphate is the main constituent of bones and teeth; kidney stones are predominately made up of calcium oxalate. The scientists subjected these materials to the same test as calcium carbonate. Drop by drop they added a solution containing calcium ions to a solution with the other component - that is, carbonate, phosphate or oxalate ions. With a special electrode they measured how many of the added calcium ions were present in the solution. It turned out that also in the experiments with calcium phosphate and calcium oxalate, there were fewer ions available than the researchers had added - they must therefore have been fixed into clusters, as was the case with the calcium carbonate.

Consequences for technology and climate change

The newly proposed mechanism of crystallization also has consequences for technology. "The stable clusters offer a new point at which to tackle lime scale deposits - not only in washing machines and dish washers, but also in industry," says Helmut Clfen. Thi
'/>"/>

Contact: Dr. Helmut Coelfen
helmut.coelfen@mpikg.mpg.de
49-331-567-9513
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Heavy pyridine crystallizes differently
2. Bare bones of crystal growth: Biomolecules enhance metal contents in calcite
3. Photonic crystal biosensors detect protein-DNA interactions
4. Scientists demonstrate the sharpest measurement of ice crystals in clouds
5. Crystal (eye) ball: Study says visual system equipped with future seeing powers
6. New clues to how proteins dissolve and crystallize
7. Scientists find missing evolutionary link using tiny fungus crystal
8. Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth
9. Unveiling the structure of microcrystals
10. Researchers develop liquid crystal pharmaceuticals to fight cancer and other diseases
11. Digital communication technology helps clear path to personalized therapies
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A crystal clear view of chalk formation
(Date:4/21/2015)... , April 21, 2015 ... evolving government policies are boosting access control systems market ... According to a recently published report by TechSci ... 2020 ", the access control systems market in ... USD1.2 billion by 2020.The access control systems market in ...
(Date:4/17/2015)... April 17, 2015 ... and technological advancement to drive biometric systems market ... 2020   According to a recently ... Systems Market Forecast &  Opportunities, 2020 ", biometric systems market in ... register growth at CAGR of over 22% through ...
(Date:4/13/2015)... YORK , April 13, 2015 ... by TechSci Research, "Global Biometrics Market Forecast & Opportunities, ... register a CAGR of around 14% till 2020. ... governments for large scale implementation and review of ... and launch of new products with greater efficiency, ...
Breaking Biology News(10 mins):Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3Global Biometrics Market to Cross US$ 21 Billion by 2020: TechSci Research 2
... all plants--is the most abundant biological material on ... renewable, plant-based biofuels research. Despite overwhelming interest, scientists ... individual cellulose fibers. , However, recent work from ... Stanford University describes the first real-time observations of ...
... that butterflies experience a great loss in body fat ... in the March issue of the Journal of Lipid ... journal. , "The transformation of a caterpillar to a ... E. Connor of the Oregon Health and Science University ...
... that allows DNA from thousands of genes to be collected ... Utah medical researchers have confirmed that a region on a ... researchers at the U School of Medicine made the finding ... family that has a high occurrence of the disorder and ...
Cached Biology News:Formation of cellulose fibers tracked for the first time 2Butterflies lose body fat during metamorphosis 2Utah researchers confirm chromosome may harbor autism gene 2Utah researchers confirm chromosome may harbor autism gene 3
(Date:4/30/2015)... SureClinical, a leader in cloud-based health ... joined SureClinical’s executive team as Chief Financial Officer. ... executive with over 25 years in leadership roles ranging ... Ms. Morris joins SureClinical from Marrone Bio Innovations (MBI), ... of MBI from its founding in 2006 until 2011, ...
(Date:4/29/2015)... 2015 According to a new ... Product (Portable & Non-Portable), Component (Accelerometer, Proximity Probe, ... Metal & Mining, & Others), & Geography - ... expected to reach $1,453.76 Million by 2020, at ... data tables and 92 figures spread through 205 ...
(Date:4/29/2015)... , April 29, 2015   Doximity , the ... all US doctors as members, announced a new, instant ... "Apply Using Doximity." With one click, all US physicians ... curriculum vitae (CV) for an open job opportunity, and ... Eighty seven percent of physicians are open ...
(Date:4/29/2015)... Poway, CA (PRWEB) April 29, 2015 ... proud to announce that its regenerative stem cell therapy ... founded in 2002, seeking to discover a successful treatment ... ligaments. , In 2003 VetStem signed a worldwide exclusive ... veterinary application, and the first horse was treated in ...
Breaking Biology Technology:Julie I. Morris Joins SureClinical as Chief Financial Officer 2Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 2Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 3Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 4Doximity Offering Hospitals Easy, Efficient Physician Application Tool 2VetStem Biopharma -Regenerative Cell Therapy has processed over 11,000 samples 2
... media presentations created with Sonic Foundry s Mediasite ... of hosted services, which help organizations capture presentations digitally and ... service platform created exclusively for Mediasite, the companies announced in ... any size and type can leverage the power of rich ...
... Formulatrix Inc. and Bruker AXS ... protein-crystal incubation and imaging products. , ,Crystal Farm, developed ... Partners International , is an integrated product for incubation ... companies design drugs. The system will now work with ...
... the first installment - From the mind to ... - The Wisconsin Technology Council has published ... 24-page publication highlights the states research base, technology-transfer process, ... I-Q Corridor that joins Chicago, Wisconsin and Minneapolis-St. Paul. ...
Cached Biology Technology:BxVideo designs Web hosting service for Sonic Foundry media presentations 2Protein-crystal companies join forces for better imaging process 2WTC launches Wisconsin Life Science magazine 2
Agar, 500 g. Noble Agar.Moisture: < 10%, ash: < 1.6%, EEO (-mr): < 0.450 (pH 8.4). Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
MW5...
From micro to giga sizes, from single prep to high-throughput, Invitrogen's range of plasmid purification kits offers superior performance to match the demands of your downstream application....
Many mammalian cell types and experimental situations create challenges for standard transfection experiments. The ViraPower Lentiviral Expression System overcomes these challenges with efficient...
Biology Products: