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.

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 July 28, 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 July 28, 2014).

Share This




More Matter & Energy News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
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:
from the past week

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