Criminalistics part 5and6,3

22問 • 3年前

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it is an alternative approach to mass spectrometry but may not be easily accessible to forensic laboratories.

Nuclear Magnetic Resonance Spectroscopy (NMRS)

it is based on the absorption of radiation by a fluorophore in the sample and its subsequent emission at a longer wavelength.

Fluorescence Spectroscopy or FS

it is defined as a protein filament that grows through the epidermis from follicles deep within the dermis.

Hair

It is more continuous in coloring; has even distribution of pigment throughout cortex; and in imbricate pattern.

Human Hairs

It is short, thin, light-colored, and barely noticeable hair that develops on most of a person’s body during childhood.

Vellus Hair

It is a much thicker type of hair that normally grows only on fetuses. It is the hair that covers the body of some newborns.

Lanugo Hair

it is hair that develop on the human body during and after puberty, on the face, chest, legs, armpits, pubic region, etc.

Androgenic Hair Or terminal hair

it is the most important for the length of the hair. It is no wonder whenever hair is the point of discussions in forensic chemistry, the word cuticles will always be heard.

hair cuticle

It is responsible for the pigmentation of the hair. Its major composition is the keratin filament that is held by the hydrogen sulfide bond. It solidly depends on the cuticle to protect it.

Cortex

it is the innermost layer of the hair shaft. This nearly invisible layer is the most-soft and fragile, and serves as the pith or marrow of the hair.

Medulla

it is the smallest unit of a textile material that has a length many times greater than its diameter

Fiber

To recognize the composition of fabrics by the burning test the sample of fiber, yarn of fabric should be moved slowly towards a small flame and the reaction to heat carefully observed.

Ignition Test

Absorption of a photon by a molecule in the ground electronic state, SO, allows promotion of the molecule into one of the excited electronic states,

Fluorescent Test

it is a technical test that involves identifying The fabric with the help of a microscope with a magnification of Minimum 100 power.

Microscopic Test

This test is another technical means of identifying fibers. But it is not intended for the general consumers. Different types of chemical tests are undertaken to establish the identity of the fibers used.

Chemical Test

it is the branch of geology that studies rocks and the conditions under which they form. It has three subdivisions: igneous, metamorphic, and sedimentary petrology.

Petrology

it is a branch of petrology that focuses on detailed descriptions of rocks, which is based on the information acquired during the petrographic analysis.

Petrography

it is a useful indicator of soil fertility because it shows the soil’s ability to supply Three important plant nutrients: calcium, magnesium and potassium.

Cation exchange capacity (CEC)

it is the study of the formation and description of soil types within various soil horizons. Observable attributes typically analyzed in the field include the composition, form, soil structure and organization of the soil.

Soil morphology

it is a geographical representation Showing diversity of soil types or soil properties in the area of interest. It is typically the end result of a soil survey inventory, i.e. soil survey.

Soil mapping

it is concerned with the inorganic minerals found in the pedosphere and to the depth of weathering. The mineral composition of soils, thus, has an important bearing on ecology and on the exploitation of soil resources.

Soil mineralogy

it is offering unparalleled opportunities to characterize bacteria, archaea, and eucarya of the soils.

Molecular Biology

Lea set A

Christian Jay Santos · 53問 · 3年前

Lea set A