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

re proteins known as mucopolysaccharides. In comparison, liquids such as water and other so-called "Newtonian" fluids do not form the beads because they lack polymers.

Conventional wisdom has held that all fluids containing polymers should form the beads, but researchers have shown that assumption to be wrong and have demonstrated why.

The researchers tested saliva and a material contained in a strip on the leading edge of disposable razors.

"You moisten the razor strip with water, which causes it to swell, press it against a finger and pull it," Basaran said. "Unlike saliva, you see strands of liquids formed but no beads."

A key factor in the beading mechanism is fluid inertia, or the tendency of a fluid to keep moving unless acted upon by an external force.

Other major elements are a fluid's viscosity; the time it takes a stretched polymer molecule to "relax," or snap back to its original shape when stretching is stopped; and the "capillary time," or how long it would take for the surface of the fluid strand to vibrate if plucked.

"It turns out that the inertia has to be large enough and the relaxation time has to be small enough to form beads," Bhat said.

The researchers discovered bead formation depends on two ratios: the viscous force compared to inertial force and the relaxation time compared to the capillary time.

Because smearing "satellite" beads form around droplets produced by an inkjet printer, learning how to control bead formation might be used to improve printing. Findings also may help to improve an industrial process called electrospinning, used to make a variety of products, and spray coating used in painting.

"The idea is that, if you are operating an inkjet printer, for example, you would be able to control these ratios to prevent the bead formation," Basaran said.

Findings may help to perfect a new type of drug-dispensing technology being developed for "per
'/>"/>

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:12/4/2014)... 3, 2014  Crossmatch™, a leading provider of ... DigitalPersona ® Pro Enterprise software and U.are.U ... throughout First Bank branch locations in ... and Virginia. First Bank, a progressive community ... North Carolina , selected the Crossmatch biometrics-based ...
(Date:11/21/2014)... 2014 According to a new ... (Video, RFID, Access Control, Intrusion Detection, Parking Management, Under ... Component Service Geography - Global Forecasts to 2020", published ... to be around $25 Billion in 2014 and is ... a CAGR of 8.69%. Browse 116 market ...
(Date:11/21/2014)... Wash. , Nov. 20, 2014 C-Labs ... for the Internet of Things (IoT), today announced the ... of chief operating officer. Previously a strategic advisor to ... finance, and operations. Mr. Traynor is based out of ... . He reports to Chris Muench , Chief ...
Breaking Biology News(10 mins):First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2
... running out of room to maneuver. As forests in ... human uses, populations of these arboreal leaf eaters, which depend ... isolated and at risk. But one type of sustainable agriculture, ... critical refuges and bridges between intact forests for the iconic ...
... lives in increasingly humanised landscapes, with limited food resources ... to Spanish researchers, food availability plays a secondary role ... allow wolves to remain in human-dominated environments in Galicia. ... lupus signatus ) varies greatly across the Iberian Peninsula ...
... July 11, 2012 Researchers at the Translational Genomics Research ... could lead to a less costly, less invasive and more ... CKD is a major complication of diabetes, high blood pressure ... is characterized by a progressive deterioration of the kidney,s ability ...
Cached Biology News:Down on the cacao farm: Sloths thrive at chocolate's source 2Down on the cacao farm: Sloths thrive at chocolate's source 3The Iberian wolf lives close to humans more for refuge than for prey 2TGen method isolates biospecimens for treatment of kidney disease 2
(Date:12/24/2014)... SILVER SPRING, Md. , Dec. 24, 2014 ... ) announced today that Medtronic, Inc. (NYSE: ... application to the U.S. Food and Drug Administration ... II implantable drug infusion system (including a ... Remodulin ® (treprostinil) Injection delivered intravenously to ...
(Date:12/24/2014)... December 23, 2014 “Preparative & ... HPLC, Flash), Consumables (Columns, Solvents, Buffers, Valves, Guages, ... & Agriculture) - Forecasts to 2019” provides a ... opportunities, current market trends, and strategies impacting the ... estimates and forecasts of the revenue and share ...
(Date:12/24/2014)... On Friday, December 19, 2014, President ... and Continuing Resolution Appropriations Act of 2015, which ... eligible to receive funding through the Congressionally Directed ... of Defense (DoD). The Hydrocephalus Association (HA), working ... is celebrating this victory for the over 1 ...
(Date:12/24/2014)... report expects global cell isolation and expansion market to ... carefully analyzed data about the vital drivers, restraints, trends, ... Copy of Report @ http://bit.ly/1yUxy0T , According ... will keep witnessing growth at an impressive CAGR during ... by rapid technological advancements, government funding and investments, and ...
Breaking Biology Technology:United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3
... want to start a business? And it's going to be ... usually comes first. Is it Biotech? Software? Before raising any ... this commercial idea is critical because it is most likely ... is this? Patentable? Copyrightable? Trade Secret? Can it be identified ...
... awarded two federal grants totaling more than $800,000 for ... biotechnology company, which develops high throughput screening tools for ... I and Phase II Small Business Innovation Research ... conduct millions of biochemical, genetic, or pharmacological tests in ...
... Wisconsin-Madison 's partnership with Google to digitize ... make one of the best historical collections in the ... months, the popular search engine company, in collaboration with ... will make books and rare documents currently available only ...
Cached Biology Technology:Starting a tech business? Step 1 is minding the intellectual property 2Starting a tech business? Step 1 is minding the intellectual property 3Grants worth $800,000 help BellBrook Labs develop products 2Google to place Wisconsin history online 2Google to place Wisconsin history online 3Google to place Wisconsin history online 4
... Crotalus adamanteus venom Description: Phosphodiesterase ... used in studying nucleic acid ... It hydrolyzes 5'-mononucleotides from 3'-hydroxy-terminated ... Phosphodiesterase I cleaves ADP-ribosylated proteins ...
This spacer is required to use the Miniature FRENCH Pressure Cell (FA-003) with the Laboratory Press....
... is a recombinant Moloney murine leukemia ... Transcriptase is similar to MuLV reverse ... usage. MuLV reverse transcriptase is a ... single-stranded RNA as a template in ...
... F2α (8-iso-13,14-dihydro-15-keto PGF2α) is a metabolite ... in rabbits, monkeys and humans. 8-iso ... non-specific lipid peroxidation. In both humans ... converted primarily to metabolites having 2 ...
Biology Products: