ARTICLES

7/22/2014· Engineering

Outbreaks Where Food Workers Have Been Implicated in the Spread of Foodborne Disease. Part 9. Washing and Drying of Hands To Reduce Microbial Contamination

By: Dr. Ewen Todd

During various daily activities at home and work, hands quickly become contaminated. Some activities increase the risk of finger contamination by pathogens more than others, such as the use of toilet paper to clean up following a diarrheal episode, changing the diaper of a sick infant, blowing a nose, or touching raw food materials. Many foodborne outbreak investigation reports have identified the hands of food workers as the source of pathogens in the implicated food. The most convenient and efficient way of removing pathogens from hands is through hand washing. Important components of hand washing are potable water for rinsing and soaps to loosen microbes from the skin. Hand washing should occur after any activity that soils hands and certainly before preparing, serving, or eating food.

7/18/2014· Elevators - Escalator - Automatic Doors

Concealed Door Closers

By: Michael Panish

The overhead or floor mounted concealed door closer is a very common type of door closer mechanism which is normally unseen and unnoticed. In the majority of installations, these concealed closers are used on aluminum glazed storefront doors, hollow metal stand alone, or structural framed window systems. The concealed door closer design concept was initially engineered as a self-contained product that featured a center pivot allowing a variety of door functions with no exterior arm or visible operating hardware.

7/15/2014· Metallurgy

Damage to Pumps from Poor Upstream Pipe Welding: A Metallurgical Failure Analysis

By: Gerald Davis

Four, tri-lobe pumps were damaged and required extensive repair during the latter stages of construction for a modification in a pharmaceutical manufacturing plant. The economic loss was significant and the general contractor for the work paid the plant's owner for the loss. The renovated units were installed and are in use. However, the general contractor then sued one of its subcontractors - a welding contractor that fabricated and completed weld joints between piping sections on the inlet side of the pumps. The general contractor claimed poor quality welds in the piping permitted loosened weld fragments to enter the pumps during the required water flow verification of the system and this caused the damage.

7/8/2014· Education & Schools

Using STEM & Green School Strategies With Urban Youth

By: Dr. Virginia Rhodes

Establishing a STEM High School (Science, Technology, Engineering, & Mathematics), and the Aiken Environmental, Ohio's first public environmental high school proved to be successful strategies to increase student engagement and raise standardized scores in science. High-poverty urban students from declining academic and disciplinary environments produced significant gains on science test results and credit attainment towards graduation. Using multiple overlapping rigor and SEL strategies, students experienced "science immersion," project-based learning, and a social-emotional curriculum that emphasized personal development and team/community-building skills.

7/2/2014· Aquatics Safety

Hyperventilation Induced Blackout (HIB)

By: Gerald Dworkin

Shallow Water Blackout (SWB) vs. Hyperventilation-Induced Blackout (HIB)....

6/30/2014· Plants & Trees

Back to the Future - The Future of Landscape Appraisals

By: Joe Samnik

The new 10th Edition, Guide for Plant Appraisals, is currently in the review and comment phase. This long awaited publication (if not Holy Grail) could be available in 2013. Having reviewed the publication I can, at this time, state with some certainty that future depositions will become much shorter and the ranks of the new unqualified landscape appraisers will be filled in large part from the current ranks of the qualified. As a book review goes, I shall go no further until such time that the 10th Edition is playing in a theater near you.

6/25/2014· Police Practices & Procedures

Reverse Sting Operations-The American Hustle: The Unethical Use of Reverse Sting Operations and the Creation of Crime

By: Michael Levine

Relying on data taken from 45 years of professional experience as a Drug Enforcement Administration (DEA) supervisory agent, U.S. Department of Justice (DOJ) expert on undercover and informant handling procedures, trial consultant, expert witness, and police instructor, the author details the evolution of the Reverse Sting operation and its related informant-handling practices, from a once valuable and effective investigative tool to a headline grabbing scam that has severely damaged our system of justice by obliterating the entrapment defense and turning the Reverse Sting into a way to make money for criminal informants.

6/25/2014· Product Liability

FDA Warns Against DMAA: Supplement Makers Agree to Remove DMAA

By: Dr. Gerald M. Goldhaber

In the November, 2012 issue of this newsletter, I wrote that the FDA was investigating reports of deaths due to the intake of energy drinks and was determining if energy drinks were safe. Earlier this month, the FDA issued a harsh warning against energy drinks and supplements containing the stimulant dimethylamylamine (DMAA), telling consumers to stay away from it while adding that the agency was "using all available tools at its disposal" to ensure that it is no longer sold. This is a formidable task because we as a nation spend more than $12.5 billion a year on energy drinks, shots and drink mixes. Although seven other countries, including Canada, had previously banned supplements containing DMAA, these products had remained widely available at supplement stores in the United States, including GNC.

6/24/2014· Expert Witnessing

How a Medical Device Expert Witness Can Assist In a Case

By: Karl R. Leinsing

Experienced Medical Device Experts can assist with a case in many different ways. First, they have industry knowledge of the medical device industry and can assist with prior art in patent litigation cases for example. They understand the technology and how claim terms are understood for one skilled in the art of medical device design, testing, and manufacturing. This firsthand information can then assist with proper claim construction and infringement analysis. Experience with medical devices product development can also assist in determining what is obvious in the field and what is not as it pertains to patent validation.

6/13/2014· Transportation

Schoolbuses, Transit and Crossing Orientation

By: Ned Einstein

In rural areas, children spaced far apart were once transported to school by horse and wagon. After the first day of school, the horses learned the routes and simply repeated them day after day, eliminating the need for drivers. The vehicles were cheap, and the engines ran effectively on oats. As our nation changed, pupil transportation's development reflected our increasing urbanization and, later, suburbanization. These developments included a new phenomenon known as traffic. As a safety matter, the need for pupil transportation grew to reflect a child's inability to cross streets or negotiate intersections, as verified by studies like the 1968 Swedish study "Children in Traffic." In simple terms, children below age 13, and particularly below age 10, do not possess the physical, mental and emotional skills necessary to cross streets and intersections.