Featured Research

from universities, journals, and other organizations

Rutgers Research On Shear Activity May Improve Safety In Areas As Diverse As Landslides, Pill Manufacture

Date:
January 18, 2002
Source:
Rutgers, The State University Of New Jersey
Summary:
Wind shear, the force feared by airline pilots, has an important earthbound counterpart, write Rutgers engineers in a paper published Jan. 17 in the prestigious science journal "Nature." Benjamin J. Glasser and Troy Shinbrot found that when multiple streams of granular material flow together – whether the materials are debris in a landslide or powders used in manufacturing – the multiple streams can suddenly take on a wavy flow that mimics action seen in liquids or gases.

NEW BRUNSWICK/PISCATAWAY, N.J. – Wind shear, the force feared by airline pilots, has an important earthbound counterpart, write Rutgers engineers in a paper published Jan. 17 in the prestigious science journal "Nature." Benjamin J. Glasser and Troy Shinbrot found that when multiple streams of granular material flow together – whether the materials are debris in a landslide or powders used in manufacturing – the multiple streams can suddenly take on a wavy flow that mimics action seen in liquids or gases.

Related Articles


Shinbrot is an associate research professor and Glasser is an assistant professor and associate director of the pharmaceutical engineering program in Rutgers department of chemical and biochemical engineering. They worked with David J. Goldfarb, now at the Schering-Plough Research Institute, on the paper entitled "Shear instabilities in granular flows."

The discovery has a wide range of implications in areas ranging from pharmaceutical manufacturing to predicting how landslides will behave, the scientists said.

"At some point, almost all pharmaceutical tablet production relies on granular materials or powders flowing down chutes," said Shinbrot, who studied computer videos of materials streams working themselves into virtual whitecaps. "Understanding how and why the materials interact as they flow can lead to more consistent pharmaceutical products."

The average pharmaceutical tablet weighs only a quarter of a gram, and Glasser noted that each may include only a few milligrams of active ingredient. "Variation in the mixture because of shear forces during manufacture can lead to a pill not doing what it's supposed to do," he said. "It can be dangerous." The use of flowing granular material is also common in other industries such as food manufacturing and mining.

Formulas developed over the years for understanding how flowing liquids and gases create shear activity have led to more accurate weather forecasting, safer air travel and more-efficient ships. He said the discovery of shear instability in granular flows could potentially lead to development of equations and formulas for flow of granular materials.

Shinbrot and Glasser said one of the more dramatic applications of granular flow research may be in understanding landslides. "In time we may be able to predict where and how landslide debris will flow. This could help us do a better job of warning people and placing barriers where they'll do the most good," Glasser said.


Story Source:

The above story is based on materials provided by Rutgers, The State University Of New Jersey. Note: Materials may be edited for content and length.


Cite This Page:

Rutgers, The State University Of New Jersey. "Rutgers Research On Shear Activity May Improve Safety In Areas As Diverse As Landslides, Pill Manufacture." ScienceDaily. ScienceDaily, 18 January 2002. <www.sciencedaily.com/releases/2002/01/020118075034.htm>.
Rutgers, The State University Of New Jersey. (2002, January 18). Rutgers Research On Shear Activity May Improve Safety In Areas As Diverse As Landslides, Pill Manufacture. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2002/01/020118075034.htm
Rutgers, The State University Of New Jersey. "Rutgers Research On Shear Activity May Improve Safety In Areas As Diverse As Landslides, Pill Manufacture." ScienceDaily. www.sciencedaily.com/releases/2002/01/020118075034.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Building Google Into Cars

Building Google Into Cars

Reuters - Business Video Online (Dec. 19, 2014) Google's next Android version could become the standard that'll power your vehicle's entertainment and navigation features, Reuters has learned. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
AP Review: Nikon D750 and GoPro Hero 4

AP Review: Nikon D750 and GoPro Hero 4

AP (Dec. 19, 2014) What to buy an experienced photographer or video shooter? There is some strong gear on the market from Nikon and GoPro. The AP's Ron Harris takes a closer look. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins