ARTICLES

2/28/2014· Food & Beverage

Outbreaks Where Food Workers Have Been Implicated in the Spread of Foodborne Disease. Part 5. Sources of Contamination and Pathogen Excretion from Infected Persons

By: Dr. Ewen Todd

In this article, the fifth in a series reviewing the role of food workers in foodborne outbreaks, background information on the routes of infection for food workers is considered. Contamination most frequently occurs via the fecal-oral route, when pathogens are present in the feces of ill, convalescent, or otherwise colonized persons. It is difficult for managers of food operations to identify food workers who may be excreting pathogens, even when these workers report their illnesses, because workers can shed pathogens during the prodrome phase of illness or can be long-term excretors or asymptomatic carriers.

2/26/2014· Elevators - Escalator - Automatic Doors

Automatic Door Injuries: High & Low Energy Automatic Doors

By: Michael Panish

Automatic doors are generally grouped into two major categories. Low energy and high energy doors. The difference between the two types of doors pertain to the ways that the doorways operate.

2/26/2014· Failure Analysis

Forensic Clues: Elderly Mobility Aids

By: John Ryan, BSME, PE

A significant number of elderly persons experience falls every year. In 2010, 2.3 million nonfatal fall injuries involving elderly people were treated in emergency rooms around the country. In the same year, 21,700 elderly people died as the result of unintentional falls. Falls for elderly people are extremely hazardous as they may not recover from fractures and other injuries.

2/18/2014· Medical - Medicine

Pipe Ruptures Above Your CT Scanner - Now What?

By: Envista Forensics - Andrew Spetter and Mark Ewing

All is quiet at 10:30 pm until a nurse notices water on the 2nd floor hallway. Building maintenance is called and discovers a ruptured pipe fitting in a bathroom on the 2nd floor. The water is shut off at 10:45 pm but unfortunately the damage has been done. It is later discovered that water penetrated through perforations in the ceiling in the CT suite on the 1st floor exposing the 16-slice CT gantry and patient table to water.

2/14/2014· HVAC - Heating, Ventilation, Air Conditioning

Merging Carbon Monoxide Life Safety with Energy Conservation Methods

By: James Partridge

Residential indoor air quality, historically, has not been a major concern because the envelope and window leakage provided inhabitants with sufficient outdoor air. Older residential buildings are sufficiently leaky such that infiltration alone can meet the minimum outdoor air requirements for residential ventilation. In an increased environmentally conscious society, many individuals have become more aware of their resource consumption, and are implementing enclosure draftstopping, attic insulation, and window replacement.

2/14/2014· Accident Investigation & Reconstruction

Automated Retrieval System Failure Results in Catastrophic Fire at Storage Facility

By: Bill O'Donnell

The largest storage rack/ retrieval system, larger than two football fields and eighty feet wide was constructed to store 108 million pounds of paper products. On July, 2002, after two months of use, the facility collapsed and sparked a fire that destroyed the entire structure and 45 million pounds of paper. Nearly 50 fire departments responded to the inferno, which burned for three weeks. The owner of the facility sued a number of companies that included the contractor that designed and built the structure, a subcontractor, and the company that supplied the 110 foot steel columns.

2/13/2014· Accident Prevention & Safety

Air Bag Deployment Criteria

By: Dr. Kenneth Solomon

Air bag control modules utilize complex algorithms to make air bag deployment decisions based on crash severity related to the change in vehicle speed or deceleration over time. Due to the proprietary nature of air bag deployment algorithms, the velocity, acceleration, or displacement thresholds for air bag deployment during a collision are not easily obtained; however, a range of frontal barrier impact speeds and corresponding deceleration and displacement threshold values for air bag deployment can be approximated using known vehicle stiffness-to-weight ratios.

2/10/2014· Finance

General Motors Joins Yogi Berra

By: Dr. Kenneth E. Lehrer

Even with creative financing, accounting techniques and decreased profit margins, the American automobile industry appears unable to sustain itself and has suffered significant losses, especially in recent years. Given these realities, it would seem prudent to rely upon baseball and the one special feature they have enjoyed via compliments of a United States Supreme Court Decision in 1922, namely exemption under the Antitrust Laws, basically Sherman and Clayton Acts.

2/10/2014· Spirituality

The Soul

By: Peter H. Dennis

We often hear people use the word "soul." They talk about "mind-body-soul", they might state that someone "has soul," they can point to a "poor soul," they may designate certain individuals as "soul mates," and they could talk about operating on a "soul level." What exactly are they talking about? Do they really know themselves? Are we a soul or do we have a soul? What then, is a soul?

2/6/2014· Medical - Medicine

Supramalleolar Wedge Osteotomy: a Method of Correcting Fixed Equinus and Associated Deformities in Children

By: Dr. John Handelsman

Patients with fixed equinus and associated angular and rotational deformities, who have had multiple previous surgeries, present a significant challenge to the orthopaedic surgeon. We chose to correct these deformities with supramalleolar extension wedge osteotomies in 21 feet in 13 patients between 1991 and 2002. The median age at presentation was 11 years (range: 2-17 years). An average correction of 20" of extension (range: 10-33") was required to achieve a plantigrade foot. Fourteen of 20 feet (70%) remained plantigrade at a mean follow-up of 6 years.