Navigation Links
Toothsome research: Deducing the diet of a prehistoric hominid
Date:2/11/2009

contradiction.

Here, work by NIST researcher Brian Lawn and a group at GWU headed by Peter Lucas came in handy. Driven by an interest in tooth restoration materials, they had been studying teeth using fracture mechanics, a field that considers how materials fail under excessive loads. Our analytical approach produces equations that predict how each mode of damage will occur under different conditions and this enables us to determine trends for different tooth sizes, different food sizes, different food hardness and so on, explained Lawn. What they show is that, under some conditions, teeth will actually fracture before they wear. This explained the absence of microwear patterns in the teeth, which would normally not be used for chewing small hard seeds. A lot of people have thought the most important part of the survival of the tooth is wear, but its now becoming evident that the fracture properties are also very important because theres a limit to the force that you can apply. Wear is important, but when you start to bite on harder, larger objects, fracture becomes more important, Lawn said.

This is a neat example of how really basic materials sciencefracture mechanicshas important implications for biological sciences and anthropology, Strait observed. In the bigger picture, said Strait, the new understanding about A. africanuss diet may help to explain its successful adaptation to changing climates. A large hard nut that had to be cracked with the premolars may not have been a preferred meal, but it could be something to fall back on when other foods were scarce.


'/>"/>

Contact: Michael Baum
michael.baum@nist.gov
301-975-2763
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Paradigm shift in Alzheimerss research: new treatments
2. New research: Fruit juice consumption not related to overweight in children
3. Advances in the field of schizophrenia research: New genetic factors identified
4. Robotics research: Enhancing the lives of people with disabilities
5. Geisinger research: Antimalarial drug prevents diabetes in arthritis patients
6. K-State research: Freshwater pollution costs US at least $4.3 billion a year
7. Prehistoric aesthetics explains snail biogeography puzzle
8. Getting warmer? Prehistoric climate can help forecast future changes
9. Male dinosaurs may have been prehistoric babysitters, study shows
10. At 2,500 pounds and 43 feet, prehistoric snake is the largest on record
11. Largest prehistoric snake on record discovered in Colombia
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Toothsome research: Deducing the diet of a prehistoric hominid
(Date:9/19/2014)... the Jimmy Durante of dinosaurs a newly ... The new dinosaur, named Rhinorex condrupus ... Brigham Young University, lived in what is now ... Late Cretaceous period. , Rhinorex, which translates roughly ... close relative of other Cretaceous hadrosaurs like Parasaurolophus ...
(Date:9/19/2014)... professor will study the unique bioelectric signaling system of ... people,s health. The OU researcher is working to ... produce the signals used to map the world around ... rate of 500-600 discharges a second throughout their lives. ... are extreme, but necessary for survival. , "There is ...
(Date:9/19/2014)... did not evolve for the sake of fairness per ... continued cooperation, so say Frans de Waal, PhD, and ... inequity aversion (IA), which is defined as a negative ... Science . , Their conclusion comes after ... address their hypothesis that it is the evolution of ...
Breaking Biology News(10 mins):New hadrosaur noses into spotlight 2Evolution of responses to (un)fairness 2Evolution of responses to (un)fairness 3
... and 26, over 50 scientists gathered for a two-day ... of knowledge on the feedbacks between deforestation and climate ... avoid catastrophic change. Collaborators from the Woods Hole Research ... de Pesquisa Ambiental da Amaznia, Harvard University, Universidade Federal ...
... This release is available in Spanish . ... University of the Basque Country (UPV/EHU), providing a tool to ... monthly or even weekly basis, thus enabling studies of the ... anchovy ( Engraulis encrasicolus , Linneaus 1875) is a coastal ...
... The following statement was,issued today by the U.S. ... Good afternoon. I want to thank Interior Minister ... our visit and for their,dedication to maintaining the ... The cooperation between our two countries on matters ...
Cached Biology News:Workshop assesses interactions between climate, forests and land use in the Amazon Basin 2Workshop assesses interactions between climate, forests and land use in the Amazon Basin 3Researcher provides tool to enable determination of age of anchovies with greater precision 2Researcher provides tool to enable determination of age of anchovies with greater precision 3Remarks Prepared for Delivery By Attorney General Michael B. Mukasey At the Ministerial Press Conference 2
(Date:9/22/2014)... way to create a highly sensitive chemical sensor based ... have unique electronic properties that the researchers were able ... by 300 times. , The study is available online ... , Amin Salehi- Khojin, asst professor of mechanical and ... student and Bijandra Kumar, post doc where they are ...
(Date:9/22/2014)... Dallas, Texas (PRWEB) September 22, 2014 ... current state of the M-Phenylenediamine (mPDA) industry in ... of the industry, including definitions, applications and industry chain ... are provided with a focus on history, developments, trends ... the international and Chinese situation is also offered. , ...
(Date:9/22/2014)... September 22, 2014 Topical BioMedics, Inc., ... in pain end their suffering, restoring hope an quality ... This is only possible because of the innovative cellular ... cream technology a reality. , The company was ... by Lou Paradise (president, chief of research, and Topricin ...
(Date:9/22/2014)... Follow us on LinkedIn ... has groomed and nurtured anti-aging products and technologies ... on appearance maintenance is benefitting the market for ... obtained from the bacterium, Clostridium Botulinum, which arrests ... With cosmetic indications for botulinum toxin ranging from ...
Breaking Biology Technology:Graphene imperfections key to creating hypersensitive 'electronic nose' 2m-Phenylenediamine Industry: mPDA Global & China Trend Analysis Now Available at ReportsnReports.com 2m-Phenylenediamine Industry: mPDA Global & China Trend Analysis Now Available at ReportsnReports.com 3Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 2Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 3Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 4Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 5Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 6Strong Demand for Non-Invasive Cosmetic Procedures Drives the Global Botulinum Toxin Market, According to New Report by Global Industry Analysts, Inc. 2Strong Demand for Non-Invasive Cosmetic Procedures Drives the Global Botulinum Toxin Market, According to New Report by Global Industry Analysts, Inc. 3
... ... PharmSource Information Services, Inc. announces the publication of a ... How to Minimize Your Risk." This incisive resource provides guidelines on ... risk for companies doing business throughout the world. "The U.S. Foreign ...
... SAN DIEGO, INDIANAPOLIS and CAMBRIDGE, Mass., July 7 ... Lilly and Company (NYSE: LLY ) and Alkermes, ... New Drug Application (NDA) for exenatide once weekly has been ... (FDA). , , Exenatide once weekly is an investigational ...
... Caraco Pharmaceutical Laboratories, Ltd. (NYSE Amex: ... Sun Pharmaceutical Industries Ltd. (Sun Pharma), immediately following Sun ... Drug Administration (FDA) for its Abbreviated New Drug Application ... tablets are an androgen receptor inhibitor indicated for use ...
Cached Biology Technology:PharmSource Releases White Paper on Role of U.S. Foreign Corrupt Practices Act (FCPA) in the Bio/Pharma Industry 2PharmSource Releases White Paper on Role of U.S. Foreign Corrupt Practices Act (FCPA) in the Bio/Pharma Industry 3New Drug Application for Exenatide Once Weekly Accepted for Review by FDA 2New Drug Application for Exenatide Once Weekly Accepted for Review by FDA 3New Drug Application for Exenatide Once Weekly Accepted for Review by FDA 4New Drug Application for Exenatide Once Weekly Accepted for Review by FDA 5New Drug Application for Exenatide Once Weekly Accepted for Review by FDA 6Caraco Pharmaceutical Laboratories, Ltd. Markets Generic Casodex(R) Tablets 2
Anti-Rsk2/MAPKAP Kinase 1b, #0 SK2/MAPKAP K1 beta Smartpool&t 3T3 cell lysate Non-specific Control Pool , #D 1X Universal Buffer...
Request Info...
Assay Kit formatted for flow cytometric detection of levels of phosphorylated histone H2A.X....
Request Info...
Biology Products: