Navigation Links
Northwestern researchers examine mechanical bases for the emergence of undulatory swimmers
Date:6/24/2013

upon mechanical parameters, is not sensitive to minor generational changes; as long as the body stiffness is above a certain value, the ability to swim quickly is insensitive to the value of the stiffness, the researchers found.

Finally, making a connection to the neural control of movement, the researchers analyzed the curvature of its undulations to determine if it was the result of a single bending torque, or if precise bending torques were necessary at every point along its body. They learned that a simple movement pattern gives rise to the complicated-looking deformation.

"This suggests that the animal does not need precise control of its movements," Patankar said.

To make these determinations, the researchers applied a common physics concept known as "spring mass damper" -- a model, applied to everything from car suspension to Slinkies, that determines movement in systems that are losing energy -- to the body of the fish.

This novel approach for the first time unified the concepts of active and passive swimming -- swimming in which forcing comes from within the fish (active) or from the surrounding water (passive) by calculating the conditions necessary for the fish to swim both actively and passively.


'/>"/>

Contact: Megan Fellman
fellman@northwestern.edu
847-491-3115
Northwestern University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Grants add to Northwestern-Qatar partnership
2. UCSB scientists compile first study of potential for tsunamis in northwestern California
3. Northwestern scientists create chemical brain
4. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
5. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
6. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
7. UNH researchers find African farmers need better climate change data to improve farming practices
8. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
9. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
10. Researchers print live cells with a standard inkjet printer
11. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... July 1, 2014 Smart technology emphasis ... convenience and improved security: NXT-ID, Inc. (OTCBB: NXTD), eBay Inc. ... GOOG ), Apple Inc. (NASDAQ: AAPL ), Visa ... MA) NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication company ... that the second series of 30 second spots on CNBC ...
(Date:7/10/2014)... Conn. , July 2, 2014 NXT-ID, Inc., (OTCQB: ... reports that CEO Mr. Gino Pereira was interviewed ... show in Tampa Florida . Mr. Pereira ... host Cedric Harris and how the Wocket™ aims ... alternative.  Cedric Harris tells Gino ...
(Date:7/10/2014)... , July 7, 2014 Fingerprint Cards, ... major design win (DW). A Chinese Top 5 smartphone OEM ... start of mass production in October 2014.   ... Top 5 smartphone OEM, which has a planned date for ... target sales volume for this phone of 3 million units. ...
Breaking Biology News(10 mins):Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 2Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 3Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 4Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 5Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4FPC Wins DW for 1021 Touch Sensor for Flagship Smartphone from Chinese Top 5 Smartphone OEM 2
... can be converted to electricity, potentially providing power for sensors, ... researchers at Case Western Reserve University report. The finding ... the country that could bring the creation of insect cyborgs ... out of science fiction and into reality. In this case, ...
... In the two and a half years since Adam Bogdanove, ... Pathology and Microbiology, along with Matthew Moscou, a former graduate ... from plant pathogenic bacteria find and bind specific sequences in ... discovery. Last year it was first shown that the ...
... cost-effective, a group of researchers from National Tsing Hua University ... have created a DNA-based memory device that is "write-once-read-many-times" (WORM), ... to encode information. The device, described in a paper accepted ... a thin film of salmon DNA that has been embedded ...
Cached Biology News:Implanted biofuel cell converts bug's chemistry into electricity 2Implanted biofuel cell converts bug's chemistry into electricity 3ISU scientist helps find structure of gene-editing protein named Method of the Year 2
(Date:7/10/2014)... A new study published today in the journal ... has found that time of day and sleep deprivation ... could be crucial when looking at the best time ... and heart disease, and for administering medicines effectively. , ... of Cancer Research, London, investigated the links between sleep ...
(Date:7/10/2014)... the fractional quantum Hall effect in bilayer graphene and ... tuned by an electric field. , The fractional ... to thin sheets are exposed to large magnetic fields, ... of individual electrons behave as a single system. However, ... established, many details of this collective behavior remain not ...
(Date:7/10/2014)... and spiders can sit upside down forever. Nanophysics makes sure ... in an article just published in Physical Review E ... Geckos and spiders that seem to be able to sit ... worldwide for many years. We will soon be able to ... the gecko,s foot. But the fact is, sooner or later ...
(Date:7/10/2014)... researchers at the University of Illinois at Urbana-Champaign ... the interplay of spin and heat at the ... spintronic devices for data storage and information processing. ... as spin-angular momentum. In a typical charge current, ... spin current," explained David Cahill, a professor of ...
Breaking Biology Technology:Time of day crucial to accurately test for diseases, new research finds 2Columbia researchers observe tunable quantum behavior in bilayer graphene 2Columbia researchers observe tunable quantum behavior in bilayer graphene 3Even geckos can lose their grip 2University of Illinois study advances limits for ultrafast nano-devices 2
... the growing open source clincial trials software. This release contains ... regulated industry sponsored clinical trials. , ... ... announces the availability of OpenClinica 2.5, the popular open source ...
... Mass., Sept. 19 Boston Scientific,Corporation (NYSE: BSX ... Life,Sciences Conference, which is being held September 22 - ... Chief Executive Officer, will make a,30-minute presentation which will ... Thursday, September 25, beginning at approximately 9:00,a.m. ET., ...
... Sept. 19 Abbott (NYSE:,ABT) will announce its 2008 ... market opens., The announcement will be followed by ... a.m. Central time (9 a.m. Eastern), and will be,accessible ... An archived edition of the call will be,available after ...
Cached Biology Technology:Akaza Research Releases New Version of OpenClinica Electronic Data Capture (EDC) Software; Targets Industry Clinical Trials 2Akaza Research Releases New Version of OpenClinica Electronic Data Capture (EDC) Software; Targets Industry Clinical Trials 3
Includes a choice of any 3 EasySep mouse selection kits and EasySep magnet...
... These 1.5L PYREX trypsinizing ... homogenous tissue samples into cell ... proteins. Heavy beaded neck accepts ... enhance vigorous agitation. • Height ...
... efficient enrichment of functional endoplasmic reticulum ... culture. The isolated ER are useful ... pathway analysis. Metabolic abnornalities of ER ... cystic fibrosis and many more ER ...
Plasmid expressing PLAP reporter gene....
Biology Products: