Navigation Links
Solution to beading-saliva mystery has practical purposes
Date:6/9/2010

WEST LAFAYETTE, Ind. - Researchers have discovered precisely why strands of some fluids containing long molecules called polymers form beads when stretched, findings that could be used to improve industrial processes and for administering drugs in "personalized medicine."

"Any kindergartner is familiar with this beading phenomenon, which you can demonstrate by stretching a glob of saliva between your thumb and forefinger," said Osman Basaran, Purdue's Burton and Kathryn Gedge Professor of Chemical Engineering.

Before the strand of spittle breaks, a string of beads is formed.

"The question is, why does this beading take place only in some fluids containing polymers but not others?" Basaran said.

Now engineers and scientists at Purdue, the Massachusetts Institute of Technology and Rice University have solved the riddle in work led by Purdue postdoctoral researcher Pradeep Bhat. The researchers have determined the mechanism behind the beading and created a computational model to simulate the phenomenon.

Knowing the answer to this question might enable researchers to design systems that precisely control bead formation, leading to improvements in various technologies such as inkjet printing. The information also might be used in a system that precisely dispenses the correct dose of medications for individual patients based on simple blood tests.

Findings are detailed in a paper published online this week in the journal Nature Physics. The paper was written by Bhat; Purdue graduate student Santosh Appathurai; Michael T. Harris, a Purdue professor of chemical engineering; Matteo Pasquali, a professor in chemical and biomolecular engineering at Rice; Gareth H. McKinley, a professor of mechanical engineering at MIT; and Basaran.

Saliva and other complex "viscoelastic" fluids like shaving cream and shampoo contain long chains of molecules called polymers. In the case of saliva, the polymers a
'/>"/>

Contact: Emil Venere
venere@purdue.edu
765-494-4709
Purdue University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Coral transplantation the simple and cheap solution to reef restoration
2. TU Delft and MI Labs merge PET and SPECT biomedical imaging techniques and increase resolution
3. Public lecture to explore solutions to the food challenge
4. BIO-key(R) Biometric Identification Now Incorporated Into Evidian Enterprise Single Sign-On Solution
5. OU WaTER Center researchers providing solutions in developing countries
6. BIO-key(R) Delivers FBI-Compliant 2 Factor Authentication Solution for First Responders
7. WISeKey Announce New Services and Solutions for Latin America at MIT
8. Physics strategy tested as solution for antibiotic resistance
9. Bomb scares: An ODD solution
10. The Vitamin D Solution
11. Measuring protein movements with nanosecond resolution
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Solution to beading-saliva mystery has practical purposes
(Date:7/11/2014)... cannabinoid receptor type 1 can inhibit voltage-gated ... reduce neurotransmitter release. However, some scholars demonstrated ... extracellular Ca2+ influx and increase neurotransmitter release. ... Hospital Affiliated to Tongji Medical College, Huazhong ... whole cell voltage-clamp and calcium imaging in ...
(Date:7/11/2014)... de Janeiro, Brazil- In the brains of all ... that allows an electric or chemical signal to ... Chemical synapses, which are the most abundant type ... Synapse formation is crucial for learning, memory, perception ... inhibitory synapses critical for brain function. For ...
(Date:7/10/2014)... June 27, 2014  Pomerantz LLP has filed ... ("Provectus" or the "Company")(NYSE-MKT: PVCT) and certain of ... States District Court, Middle District of ... of a class consisting of all persons or ... between December 17, 2013 and May 22, 2014, ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3
... while engineered nanomaterials can be transferred up the ... celled organisms to higher multicelled ones, the amount ... evidence of the nanomaterials concentrating in the higher ... from the National Institute of Standards and Technology ...
... gyro . . . Airplanes, submarines and ... of inexpensive high-performance micro-mechanical gyroscopes for navigation and other ... developed by a team consisting of Panos Datskos, Slo ... is radically different than today,s gyroscopes, which are big ...
... summer where the tiger,s roar will meet birdsongs; where the voice ... advanced sonar systems; where the echoing din of the urban soundscape ... sounds -- and the scientific advances related to them -- will ... Monday June 30 through Friday July 4, 2008 at the Palais ...
Cached Biology News:Research measures movement of nanomaterials in simple model food chain 2Story tips from the Department of Energy's Oak Ridge National Laboratory, June 2008 2Story tips from the Department of Energy's Oak Ridge National Laboratory, June 2008 3
(Date:7/10/2014)... 10, 2014 Product and process ... low abundance and are often “lost in the ... , Join presenters Dr. Rowel Tobias, Senior Scientist, ... Anders, Head of Quality at Nanotherapeutics, Inc., to ... can speed detection and quantitation while achieving the ...
(Date:7/10/2014)... Poway, CA (PRWEB) July 10, 2014 Robert ... Regenerative Veterinary Medicine company, is proud to announce the relaunch ... Pets, launching with a new series called “ What are ... to give an honest and straightforward foundation in the basics ... an educated decision on the right type of treatment when ...
(Date:7/10/2014)... 2014 On July 9 Prime ... presented Russia,s first national "Industry" ... Company is developing a unique project called MabNext ... a number of innovative drugs based on monoclonal antibodies ... took place at the International Exhibition "Innoprom 2014" in ...
(Date:7/10/2014)... According to the International Atomic Energy Agency (IAEA) ... terrorists acquiring sufficient quantities of plutonium or highly ... explosive device. The IAEA also notes that most ... quantities, which can be challenging to detect with ... study appearing this week in the Journal ...
Breaking Biology Technology:Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 3Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2Sensitive detection method may help impede illicit nuclear trafficking 2
... - Jason Smith acknowledges he's on a personal mission. The ... of the Peak Ridge Capital Group, wants to bridge the gap ... passion for investing in innovative Midwestern technology companies is one of ... in the morning and it is one of the first things ...
... Wis. - Broadlook Technologies , an Internet ... as the firm's chief operations officer. , ,Meier brings ... sectors, and he will be responsible for helping the ... programs. , ,"I believe in Greg, and he believed ...
... Madison, Wis. - A University of Wisconsin-Madison ... return in the nation, according to BusinessWeek 's latest ... class of 2006 paid $186,800 for their MBAs and started ... even in four and a half years, not counting lost ...
Cached Biology Technology:Investor links East Coast funds to Midwest tech 2Investor links East Coast funds to Midwest tech 3UW-Madison MBA program ranked among best for investment return 2
... reagent kit for determining the absolute count ... samples, mobilized peripheral blood samples, and leukapheresis ... total nucleated cell count and a total ... designed for use in the BD Procount ...
... Both compact and lightweight, the Moticam ... microscope through the eyepiece, eyetube, or trinocular ... easy to use Plug-and-Play Images 2.0ML software ... Image manipulation tools to maximize resolution for ...
... is an aqueous solution that contains a ... in a PBS buffer (phosphate buffered saline), ... does not contain a preservative. StabilCoat ... of dried protein components in immunoassays and ...
Mouse monoclonal antibody to PARK2 - Parkinson disease (autosomal recessive, juvenile) 2, parkin...
Biology Products: