UGC NTA NET/JRF Exam, Forensic Science, February-2023

Planchettes are coloured dots embedded into paper during the manufacturing process of security or safety papers. These tiny fluorescent particles, usually shaped like discs, are randomly distributed throughout the paper's thickness.

They are visible under UV light and provide an added level of security against counterfeiting. These particles may vary in color and size, adding to the complexity and uniqueness of each security paper.

In the context of facsimile documents, TTI stands for Transmit Terminal Identifier. This is essentially an identification string that is transmitted by the sending fax machine, typically at the top of each transmitted page.

The TTI often includes the sender's fax number and possibly the name of the person or company sending the fax. This information can be useful in tracking the origin of a fax transmission in investigative scenarios.

Upon microscopic examination of а photocopied document, dry toner fused by the radiant heat method often resembles liquid tar and has a glossy, bubbly appearance.

Radiant heat is a method used in some photocopiers and laser printers to fuse the toner (the powder that forms the image) to the paper. This method produces a distinctive appearance that can help identify the type of machine used to create a document.

In the context of the counterfeit protection system code, VPS stands for Vertical Pattern Separation. This is a method used to separate different design elements in a security feature such as a hologram or a printed pattern.

By ensuring that these elements are uniquely positioned, it becomes more difficult for counterfeiters to reproduce the feature accurately.

Features of the human skul1 that characterize people of Negroid ancestry include a wide nasal aperture, projecting face, rectangular eye orbits, and a low and rounded nasal root.

These features can be used in forensic anthropology to help determine the likely race or ethnicity of an individual based on skeletal remains. However, it's important to remember that there's considerable variation within any racial or ethnic group.

The Carabelli's cusp is a supplementary or extra cusp located on the mesiopalatal surface of the maxillary first molars. This feature is most commonly found among the dentition of Caucasoids (people of Caucasian or European ancestry).

The presence or absence of this and other dental features can provide clues about a person's ancestry or ethnicity.

An injury caused by a low-velocity force that has a wide area of impact on bone is referred to as a blunt force trauma. This type of trauma is usually the result of an impact with a blunt object or surface, causing damage to the skin and underlying tissues.

Depending on the force and direction of the impact, blunt force trauma can result in bruises, abrasions, lacerations, fractures, and even internal injuries.

After death, the process of degeneration of the body tissues by the digestive fluids normally residing in the intestinal tract is termed as autolysis.

This process begins soon after death and is characterized by the breakdown of cells and tissues by the body's own enzymes. Autolysis is an early stage of decomposition and is followed by putrefaction, which is the breakdown of tissues by bacteria.

If insects are present on a cadaver but not in the surrounding area, it may indicate that the cadaver was displaced. Certain types of insects, such as blowflies and beetles, are attracted to dead bodies and play an important role in decomposition.

If these insects are found on a body but not in the surrounding area, it may suggest that the body was moved after death. Forensic entomologists can use this information to help determine the postmortem interval and other aspects of a crime.