Navigation Links
Color in fossil insects, diamonds from the ancient ocean floor and modeling the world's largest rivers
Date:2/22/2013

ial within the bars, islands and floodplains that define their morphology. The world's largest rivers are characterized by remarkable variety in form and behavior (e.g., width, depth, number of channels, bar and island stability), which remain poorly understood. This study by Andrew Nicholas applies a new numerical model of water flow and sediment transport to show how the morphology of large sand-bed rivers is influenced by bed sediment mobility, bank erodibility, and rate of floodplain development. Simulations demonstrate that a wide range of river styles, including meandering, anabranching, and braiding, can occur over a relatively narrow range of environmental conditions. Results highlight the suspension of bed material as a key control on river morphology, which promotes an inverse relationship between bed sediment mobility and the degree of channel branching. Moreover, high mobility of bed and bank sediments is hypothesized to favor contrasting river styles, although both may be promoted by increasing river gradient. These results explain the inability of existing theory to predict the morphology of the world's largest rivers, and highlight the potential for investigating river-floodplain co-evolution using physics-based simulation models.


The fossil record of insect color illuminated by maturation experiments
Maria E. McNamara et al., School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK. Posted online 20 Feb. 2013; http://dx.doi.org/10.1130/G33836.1.

Structural coloration underpins communication strategies in many insects alive today, but its evolution is poorly understood. This stems, in part, from limited data on how color alters during fossilization. Maria E. McNamara and colleagues resolve this by using elevated pressures and temperatures to simulate the effects of burial on structurally colored cuticles of modern beetles. These expe
'/>"/>

Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11

Related biology news :

1. University of Colorado and Orphan Technologies sign agreement
2. Bees attracted to contrasting colors when looking for nectar
3. Colorado Marijuana Task Force Gives Green Light To "Pot Tourism"
4. Study shows that diet of resistant starch helps the body resist colorectal cancer
5. Lakewood High School wins Colorado Science Bowl
6. Eating bright-colored fruits and vegetables may prevent or delay ALS
7. Bioinspired fibers change color when stretched
8. Cup color influences the taste of hot chocolate
9. Dance of water molecules turns fire-colored beetles into antifreeze artists
10. 3 new genetic links to colorectal cancer
11. Le Rouge et le Noir: Where the black dahlia gets its color
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/2/2015)... 2015   Neurotechnology , a provider of high-precision ... SentiGaze Software Development Kit (SDK). The SentiGaze algorithm ... off-the-shelf webcams to track eye movements and generate heatmaps ... Heatmaps can be used for applications such as analysis ... The SDK can also be used to develop interfaces ...
(Date:2/24/2015)... YORK , Feb. 24, 2015 This report ... The report provides separate comprehensive analytics for the US, ... Europe , Asia-Pacific , ... . Annual estimates and forecasts are provided for the ... provided for these markets. Market data and analytics are derived ...
(Date:2/24/2015)... DUBLIN , Feb. 24, 2015 Research ... announced the addition of the "Global 2D ... offering. The analysts forecast the ... a CAGR of 32.12% over the period 2014-2019 ... devices in non-traditional sectors is one of the ...
Breaking Biology News(10 mins):Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 2Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 3World Iris Biometrics Industry 2World Iris Biometrics Industry 3World Iris Biometrics Industry 4World Iris Biometrics Industry 5World Iris Biometrics Industry 6World Iris Biometrics Industry 7World Iris Biometrics Industry 8World Iris Biometrics Industry 9World Iris Biometrics Industry 10World Iris Biometrics Industry 11Global 2D Gesture Recognition Market 2015-2019 with Cognitec Systems, CogniVue, eyeSight Mobile Technologies & PointGrab Dominating 2
... Researchers working with rats have zeroed in on the ... behavior seen in users of cocaine as well as ... in such disorders as schizophrenia, depression, and post-traumatic stress ... A. Grace of the University of Pittsburgh described their ...
... rises during pregnancy, according to a study of women ... Johns Hopkins Bloomberg School of Public Health. The increased ... for behavior and other factors that contribute to HIV ... 30, 2005, edition of The Lancet, suggest that the ...
... puzzle in Alzheimer's disease (AD) research is why mice ... in humans show little pathology of the disease. Specifically, ... amyloid precursor protein (APP). It is this protein that, ... peptide that clusters into the amyloid plaque that clogs ...
Cached Biology News:New clue to cocaine addicts' quirky behavior 2Pregnant women at higher risk for HIV, Uganda study finds 2Pinpointing a culprit molecule in Alzheimer's disease 2
(Date:3/5/2015)... Research and Markets ( http://www.researchandmarkets.com/research/4ld5nw/mature_biotech ) ... Outlook 2015: New Therapy Ventures Pave the Way for ... All biotech companies - Gilead (GILD), Amgen (AMGN), Biogen ... given a positive return and hence increased the interest ... select therapy/niche indication where the high treatment cost justifies ...
(Date:3/5/2015)... The next implants made from the PEEK-OPTIMA® ... (European) approval. The CE mark is necessary for distributing ... the European Union. Following the Class IIb approval route, ... supplied by the Turkey-based company Osimplant for the treatment ... Expandable Bladed HA PEEK Cage line of spinal implants, ...
(Date:3/4/2015)... 4, 2015 In an article published and ... for Health Security review the clinical aspects of diseases ... as bioweapons. The article, "Clinical Management of Potential Bioterrorism-Related ... website of the New England Journal of Medicine ... Toner , and Tom Inglesby—review the clinical management of ...
(Date:3/4/2015)... 2015 USDM Life Sciences , ... sciences industry, hired David Blewitt as Vice ... Compliance Services and Solutions at USDM Life Sciences , ... while maintaining compliance with government regulations worldwide. , ... accomplished life sciences regulatory and IS compliance professional with ...
Breaking Biology Technology:Mature Biotech Outlook 2015: New Therapy Ventures Pave the Way for Success 2Mature Biotech Outlook 2015: New Therapy Ventures Pave the Way for Success 3Invibio’s PEEK-OPTIMA® HA Enhanced Gains Momentum: New Implant Receives European Approval 2Invibio’s PEEK-OPTIMA® HA Enhanced Gains Momentum: New Implant Receives European Approval 3Latest Clinical Information On Bioterrorism Threats 2USDM Life Sciences Names David Blewitt VP of Cloud Compliance for Regulated Life Sciences 2USDM Life Sciences Names David Blewitt VP of Cloud Compliance for Regulated Life Sciences 3
... DIEGO, April 14 XIFIN Inc., the ... diagnostic laboratories, announced today that XIFIN,s CEO ... at the Executive War College Conference in ... attendance will be senior executives, laboratory administrators ...
... to begin after markets close at 2:00 p.m. PT (5:00 ... MASI ), the inventor of Pulse CO-Oximetry and Measure-Through ... first quarter 2009 financial results for the period ended April ... 2009.A conference call to review the results will begin at ...
... N.C., April 14 Pharmaceutical Institute (PI), the ... pharmaceutical and biotech industry, today announced the release ... Markets Excellence(TM) . The series was developed ... leaders from 17 large and midsize pharmaceutical and ...
Cached Biology Technology:XIFIN Inc. CEO to Speak at Executive War College Conference 2XIFIN Inc. CEO to Speak at Executive War College Conference 3Masimo to Report First Quarter 2009 Financial Results on May 5, 2009 2Masimo to Report First Quarter 2009 Financial Results on May 5, 2009 3Pharmaceutical Institute Launches New Training Series Focused on Managed Markets Excellence 2Pharmaceutical Institute Launches New Training Series Focused on Managed Markets Excellence 3
... 1 outflow Single-cell and patch delivery ... solution change Very small dead volume , ... 360, 250 and 100 micron delivery tips ... micromanipulator Available in 4, 8, and 16 ...
... are ideal for storage and transport of ... racks withstand extreme temperatures, making them an ... also be autoclaved for use in sterile ... accommodates 0.5ml microcentrifuge tubes, the other 1.5ml ...
... This kit consists of universal lysis ... control primers for 100 25 l volume ... types of Gram negative or positive rod ... Klebsiella Pneumoniae, Bacillus Cereus, Staphylococcus Aureus, Streptococcus ...
... optimized for serum-free growth of Ready-Plaque Sf9 ... medium, Sf9 cultures routinely reach densities greater ... above 95%. This medium is also recommended ... staining of pBACgus recombinants develops faster than ...
Biology Products: