Trace evidence — contends that every contact, no matter how slight, will leave a trace. The trace is normally caused by objects or substances contacting one another, and leaving a minute sample on the contact surfaces. Material is often transferred by heat… … Wikipedia
Chemistry genealogy — is somewhat of a hobby of chemists to trace their roots through their doctoral advisors in the same manner that one might trace a family tree. This page attempts to consolidate these genealogies.Chemistry GenealogyRocabonella:Pelope::Niccolò… … Wikipedia
Trace element — In analytical chemistry, a trace element is an element in a sample that has an average concentration of less than 100 parts per million measured in atomic count, or less than 100 micrograms per gram. In biochemistry, a trace element is a chemical … Wikipedia
Trace gas — The term Trace gas refers to a gas or gases which make up less than 1% by volume of the earth s atmosphere, and therefore includes all gases except nitrogen (78.1%) and oxygen (20.9%). The most abundant trace gas at 0.934% is argon, which is… … Wikipedia
chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… … Universalium
CHEMISTRY — Since the birth of modern chemistry at the beginning of the 19th century, Jews have taken a full part in all branches of the science, and the percentage of Jews achieving eminence has been high compared to their number in the general population,… … Encyclopedia of Judaism
trace element — UK / US noun [countable] Word forms trace element : singular trace element plural trace elements 1) biology a chemical element that a living thing needs in only extremely small amounts in order to grow and develop normally, for example iron or… … English dictionary
TRACE-A — 1. TRansport and Atmospheric Chemistry near the Equator Atlantic (See GTE) Contributor: LaRC 2. Transport and Chemistry near the Equator over the Atlantic Contributor: GSFC … NASA Acronyms
TRACE — 1. Task Reporting and Current Evaluation Contributor: CASI 2. Taxing and Routing of Aircraft Coordinating Equipment Contributor: CASI 3. Tracking and Communications (Extraterrestrial) Contributor: CASI 4. Transition Region and Coronal Explorer… … NASA Acronyms
Bioinorganic chemistry — is a field that examines the role of metals in biology. Bioinorganic chemistry includes the study of both natural phenomena such as the behavior of metalloproteins as well artificially introduced metals, including those that are non essential, in … Wikipedia