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Scent Transfer Unit
A scent transfer unit is a vacuum device used to collect scent evidence from a crime scene A crime scene is any location that may be associated with a committed crime. Crime scenes contain physical evidence that is pertinent to a criminal investigation. This evidence is collected by crime scene investigators (CSI) and law enforcement. ... or item of evidence. The unit was invented by Bill Tolhurst (a former president of the National Police Bloodhound Association) while working for the Niagara County Sheriff's Department. Several law enforcement agencies have bought scent transfer units. The device works by vacuuming an odour from a desired object onto a sterile gauze pad placed over the air intake. The resulting scent pads can either be given to a tracking dog, used in a 'scent lineup', or preserved in a freezer. Tolhurst has claimed that evidence pads can be stored successfully in a frozen state for more than 11 years. Although the reliability of scent evidence in general h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crime Scene
A crime scene is any location that may be associated with a committed crime. Crime scenes contain physical evidence that is pertinent to a criminal investigation. This evidence is collected by crime scene investigators (CSI) and law enforcement. The location of a crime scene can be the place where the crime took place or can be any area that contains evidence from the crime itself. Scenes are not only limited to a location, but can be any person, place, or object associated with the criminal behaviours that occurred. Immediately after the discovery of a crime scene, measures must be taken to secure and protect the scene from contamination. To maintain the integrity of the scene, law enforcement must take action to block off the surrounding area as well as keep track of who comes in and goes out. By taking these precautions, officers can ensure that evidence that is collected can be used in court. Evidence that has become contaminated, tampered with, or mistreated can pollute th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Police Bloodhound Association
National may refer to: Common uses * Nation or country ** Nationality – a ''national'' is a person who is subject to a nation, regardless of whether the person has full rights as a citizen Places in the United States * National, Maryland, census-designated place * National, Nevada, ghost town * National, Utah, ghost town * National, West Virginia, unincorporated community Commerce * National (brand), a brand name of electronic goods from Panasonic * National Benzole (or simply known as National), former petrol station chain in the UK, merged with BP * National Book Store, a bookstore and office supplies chain in the Philippines * National Car Rental, an American rental car company * National Energy Systems, a former name of Eco Marine Power * National Entertainment Commission, a former name of the Media Rating Council * National Motor Vehicle Company, Indianapolis, Indiana, USA 1900–1924 * National Radio Company, Malden, Massachusetts, USA 1914–1991 * National Supermarket ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niagara County Sheriff's Department
Niagara may refer to: Geography Niagara Falls and nearby places In both the United States and Canada *Niagara Falls, the famous waterfalls in the Niagara River *Niagara River, part of the U.S.–Canada border *Niagara Escarpment, the cliff over which the river forms the falls * Niagara Whirlpool, a natural whirlpool downstream from the falls *Niagara Gorge, formed by the recession of the falls United States * Niagara Falls, New York, the U.S. city adjacent to the falls * Niagara County, New York **Niagara Falls State Park, the oldest state park in the US ** Niagara Escarpment AVA, New York wine region * Niagara, New York, a town * Fort Niagara, near Youngstown, New York * Niagara Frontier, a region south of Lakes Ontario and Erie * Buffalo–Niagara Falls metropolitan area * Buffalo Niagara Region, an economic region Canada * Niagara Falls, Ontario, the Canadian city adjacent to the falls * Niagara-on-the-Lake * Niagara Peninsula, between Lakes Ontario and Erie * Niagara ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popular Science
Popular science (also called pop-science or popsci) is an interpretation of science intended for a general audience. While science journalism focuses on recent scientific developments, popular science is more broad ranging. It may be written by professional science journalists or by scientists themselves. It is presented in many forms, including books, film and television documentaries, magazine articles, and web pages. History Before the modern specialization and professionalization of science, there was often little distinction between "science" and "popular science", and works intended to share scientific knowledge with a general reader existed as far back as Greek and Roman antiquity. Without these popular works, much of the scientific knowledge of the era might have been lost. For example, none of the original works of the Greek astronomer Eudoxus (4th century BC) have survived, but his contributions were largely preserved due to the didactic poem '' Phenomena'' writte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tracking (dog)
Tracking refers to a dog's ability to detect, recognize and follow a specific scent. Possessing heightened olfactory abilities, dogs, especially scent hounds, are able to detect, track and locate the source of certain odours.Hepper, P. G., & Wells, D. L. (2005). How many footsteps do dogs need to determine the direction of an odour trail?. Chemical Senses, 30(4), 291–298. A deeper understanding of the physiological mechanisms and the phases involved in canine scent tracking has allowed humans to utilize this animal behaviour in a variety of professions. Through domestication and the human application of dog behaviour, different methods and influential factors on tracking ability have been discovered. While tracking was once considered a predatory technique of dogs in the wild, it has now become widely used by humans. Physiological mechanisms According to zoosemiotics animal communication involves an exchange of information between a sender and a receiver through a transfer of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forensic Equipment
Forensic science combines principles of law and science to investigate criminal activity. Through crime scene investigations and laboratory analysis, forensic scientists are able to link suspects to evidence. An example is determining the time and cause of death through autopsies. This evidence can then be used for proof towards a crime. Forensic science, often confused with criminalistics, is the application of science principles and methods to support legal decision-making in matters of criminal and civil law. During criminal investigation in particular, it is governed by the legal standards of admissible evidence and criminal procedure. It is a broad field utilizing numerous practices such as the analysis of DNA, fingerprints, bloodstain patterns, firearms, ballistics, toxicology, microscopy, and fire debris analysis. Forensic scientists collect, preserve, and analyze evidence during the course of an investigation. While some forensic scientists travel to the scene of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
