DNA

Deoxyribonucleic acid (ⁱ/diˈɒksiˌraɪboʊnjʊˌkliːɪk, -ˌkleɪɪk/;DNA) is a molecule that carries most of the genetic instructions used in the development, functioning and reproduction of all known living organisms and many viruses. DNA is a nucleic acid; alongside proteins and carbohydrates, nucleic acids compose the three major macromolecules essential for all known forms of life. Most DNA molecules consist of two biopolymer strands coiled around each other to form a double helix. The two DNA strands are known as polynucleotides since they are composed of simpler units called nucleotides. Each nucleotide is composed of a nitrogen-containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a monosaccharide sugar called deoxyribose and a phosphate group. The nucleotides are joined to one another in a chain by covalent bonds between the sugar of one nucleotide and the phosphate of the next, resulting in an alternating sugar-phosphate backbone. According to base pairing rules (A with T, and C with G), hydrogen bonds bind the nitrogenous bases of the two separate polynucleotide strands to make double-stranded DNA. The total amount of related DNA base pairs on Earth is estimated at 5.0 x 10³⁷, and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as 4 TtC (trillion tons of carbon).

Medical examiner

A medical examiner is a medically qualified officer whose duty is to investigate deaths and injuries that occur under unusual or suspicious circumstances, to perform post-mortem examinations, and in some jurisdictions to initiate inquests.

Job roles

A medical examiner's duties may vary depending on location. Typically, a medical examiners duties may include:

In some jurisdictions, a coroner performs these and other duties. Within the United States, there is a mixture of coroner and medical examiner systems, and in some states, dual systems. The requirements to hold office vary widely between jurisdictions.

Qualifications

United Kingdom

In the UK, formal medical training is required for medical examiners. Many employers also request training in pathology while others do not. In the UK, a medical examiner is always a medically trained professional, whereas a coroner is a judicial officer.

Music Inc.

Music Inc. is an album by American jazz trumpeter Charles Tolliver's Music Inc. with a Big Band recorded in 1970 and first released on the Strata-East label.

Reception

The Allmusic review by Jason Ankeny awarded the album 4½ stars stating "The remarkable Music, Inc. Big Band remains the apotheosis of trumpeter Charles Tolliver's singular creative vision. Rarely if ever has a big band exhibited so much freedom or finesse, while at the same time never overwhelming the virtuoso soloists on whom the performances pivots".

Track listing

All compositions by Charles Tolliver except as indicated

Personnel

TMZ

TMZ is a celebrity news website that debuted on November 8, 2005. It was a collaboration between AOL and Telepictures Productions, a division of Warner Bros., until Time Warner divested AOL in 2009. The name TMZ stands for thirty-mile zone, the historic "studio zone" within a 30-mile (50 km) radius centered at the intersection of West Beverly Boulevard and North La Cienega Boulevard in Los Angeles, California.

TMZ's managing editor is Harvey Levin, a lawyer-turned-journalist who was previously a legal expert for the Los Angeles television station KCBS-TV. The site claims that it does not pay for stories or interviews; however, Levin has admitted that TMZ does "sometimes pay sources for leads on stories". Levin has stated that "everything is researched and vetted for accuracy." A companion television series, TMZ on TV, debuted on September 10, 2007.

Development

Seven months prior to the official launch of TMZ, America Online (AOL) had hinted that it was planning to launch a Hollywood and entertainment-centric news site that would be produced in conjunction with Telepictures Productions and had shown interest in launching a website featuring a focus mainly on celebrities. At the time of the launch, AOL confirmed that the site would primarily feature and consist of Hollywood gossip, including interviews, photos and video footage of celebrities and information pertaining to industry news on movies, television shows, etc. The site was described as "an effort to further feed the current American obsession with celebrities". Mike Shields of MediaWeek.com wrote, "the site also boasts of an expansive collection of archived star photos and videos", allowing fans to "trace changing hairlines and waistlines of their favorites performers over the years".

Polygraph

A polygraph, popularly referred to as a lie detector, measures and records several physiological indices such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions. The belief underpinning the use of the polygraph is that deceptive answers will produce physiological responses that can be differentiated from those associated with non-deceptive answers; the polygraph is one of several devices used for lie detection.

The polygraph was invented in 1921 by John Augustus Larson, a medical student at the University of California at Berkeley and a police officer of the Berkeley Police Department in Berkeley, California. The polygraph was on the Encyclopædia Britannica 2003 list of greatest inventions, described as inventions that "have had profound effects on human life for better or worse."

The efficacy of polygraphs is debated in the scientific community. In 2001, a significant fraction of the scientific community considered polygraphy to be pseudoscience. In 2002, a review by the National Academies of Science found that in populations untrained in countermeasures, polygraph testing can discriminate lying from truth telling at rates above chance, though below perfection. These results apply only to specific events and not to screening where it is assumed that polygraph would work less well. Effectiveness may also be worsened by countermeasures.