Article on studies of the kinetics and thermochemistry of the forward and reverse reaction Cl + C₆H₆ = HCl + C₆H₅.

The Federal Aviation Administration (FAA) identified 17 accidents that may have resulted from fuel tank explosions on commercial aircraft from 1959 to 2001. Seven events involved JP 4 or JP 4/Jet A mixtures that are no longer used for commercial aircraft fuel. The remaining 10 events involved Jet A or Jet A1 fuels that are in current use by the commercial aircraft industry. Four fuel tank explosions occurred in center wing tanks (CWTs) where on-board appliances can potentially transfer heat to the tank. These tanks are designated as ''Heated Center Wing Tanks'' (HCWT). Since 1996, the FAA has significantly increased the rate at which it has mandated airworthiness directives (ADs) directed at elimination of ignition sources. This effort includes the adoption, in 2001, of Special Federal Aviation Regulation 88 of 14 CFR part 21 (SFAR 88 ''Fuel Tank System Fault Tolerance Evaluation Requirements''). This paper addresses SFAR 88 effectiveness in reducing HCWT ignition source probability. Our statistical analysis, relating the occurrence of both on-ground and in-flight HCWT explosions to the cumulative flight hours of commercial passenger aircraft containing HCWT's reveals that the best estimate of HCWT explosion rate is 1 explosion in 1.4 x 10{sup 8} flight hours. Based on …

Numerous federal, state, and local agencies share responsibilities for regulating the safety of the U.S. food supply, which many experts say is among the safest in the world. Nevertheless, critics view this system as lacking the organization and resources to adequately combat foodborne illness, which sickens an estimated 76 million people and kills an estimated 5,000 each year in this country. The 110th Congress may face calls for a review of federal food safety agencies and authorities, and proposals for reorganizing them. Among the issues likely to arise are whether reform can improve oversight, and the cost to industry, consumers, and taxpayers. This report provides a brief introduction to the system and the debate on whether reorganization is needed.

Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.

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An individual viewed through racks of clothing at a Dallas charity.

A man, standing next to a window, examines clothing at the Dallas Catholic Charities.

A man stands between racks of clothing with a scarf wrapped around his neck.

A nun arranges clothing on a rack at the Dallas Catholic Charities.

A woman tries on shoes at the Catholic Charities of Dallas, Inc.

People can be seen looking for clothing behind the sign for Catholic Charities of Dallas, Inc.

People browse the racks of clothing at the Dallas Catholic Charities.

People of all ages use the services of Catholic Charities of Dallas, Inc. These people are looking through racks of clothing.

People examine the clothing at the Dallas Catholic Charities clothing distribution site.

Clothing hanging from racks obscures the face on an individual looking for something to wear.

Racks of clothing obscure the face of the individual looking for outfits at the Dallas Catholic Charities.

The sign for Catholic Charities of Dallas, Inc. is seen in their window.

The sign for Catholic Charities of Dallas, Inc., as seen through a window and the reflection of a glass wall.

Three individuals look through the racks of clothing at Dallas Catholic Charities.

Three individuals search for clothing among the racks of donated items at a Dallas charity.

Two women look for clothing at the Dallas Catholic Charities.