Chemical analysis is an important element of national security among the major world powers with materials measurement and signature intelligence ( MASINT ) capabilities.

Chemical analysis found that samples of polywater were contaminated with other substances ( explaining the changes in melting and boiling points ), and examination of polywater via electron microscopy showed that it also contained small particles of various solids from silicon to phospholipids, explaining its greater viscosity.

One of Michael Faraday's significant works was The Chemical History of a Candle, where he gives an in-depth analysis of the evolutionary development, workings and science of candles.

Chemical state analysis of the surface of polymers readily reveals the presence or absence of the chemical states of carbon known as: carbide ( C < sup > 2 -</ sup >), hydrocarbon ( C-C ), alcohol ( C-OH ), ketone ( C = O ), organic ester ( COOR ), carbonate ( CO < sub > 3 </ sub >), fluoro-hydrocarbon ( CF < sub > 2 </ sub >- CH < sub > 2 </ sub >), trifluorocarbon ( CF < sub > 3 </ sub >).

Chemical state analysis of the surface of a silicon wafer readily reveals the presence or absence of the chemical states of silicon known as: n-doped silicon, p-doped silicon, silicon suboxide ( Si < sub > 2 </ sub > O ), silicon monoxide ( SiO ), Si < sub > 2 </ sub > O < sub > 3 </ sub >, silicon dioxide ( SiO < sub > 2 </ sub >).

Chemical analysis showed that the abundances of ethane and methane were roughly equal, which may imply that its ices formed in interstellar space, away from the Sun, which would have evaporated these volatile molecules.

Chemical analysis showed that it contained antimony and potassium tartrate.

Chemical analysis of the actual foam that was in the nightclub on the evening of the fire was never released to the public.

Chemical analysis showed that the front armour plates were made from high-quality cemented armour ( S. t. a Plat according to Vickers-Armstrongs classification ), whereas the homogeneous roof and bottom armour plates were made from mediocre steel.

Chemical and microbiological analysis, while expensive, are the only way to obtain the information necessary for deciding on the appropriate method of purification.

* Chemical analysis

Chemical analysis may reveal saponification occurring in a painting ’ s deeper layers before any signs are visible on the surface, even in paintings centuries old.

Chemical analysis has found that the formula is a mixture of low-molecular-weight substances that serve as antioxidants.

* Four semesters in complementary engineering subjects: Environmental engineering, Technical draw in engineering, Statistical analysis of Chemical Processes, Optional lecture I to IV, Processes Laboratory, Technical design of equipments, Research laboratory, Business Management, Chemical Processes Design, Projects evaluation, Chemical Projects design, National Chemical Industry, Production management, Staff Supervision, Quality Management, Soft Skill III, and Professional thesis.

Chemical analysis has shown that the odour of the dried mushroom is a complex mixture of 53 volatile compounds.

* Reassessing Libya: an analysis from Jane's Nuclear, Biological and Chemical Defence

Chemical analysis ( gas-chromatography ) confirm the identification as birch-pitch ( presence of betulin ).

The grade of a sample of coal does not precisely define its chemical composition, so calculating the actual usefulness of coal as a fuel requires determining its proximate and ultimate analysis ( see " Chemical Composition " below ).

The contract is " to provide a full range of planning, analysis, exercise, and information technology services for Chemical, Biological, Radiological, Nuclear, and High-Yield Explosive ( CBRNE ) Consequence Management operations ," a Titan press release announced.

Chemical hair analysis may be considered for retrospective purposes when blood and urine are no longer expected to contain a particular contaminant, typically a year or less.

Chemical analysis of the firing remains showed them to contain high quantities of bone-ash ; thereby pre-dating the claim of Josiah Spode to have invented the bone china process .< ref >< cite >' Industries: Pottery: Bow porcelain ', A History of the County of Middlesex: Volume 2: General ; Ashford, East Bedfont with Hatton, Feltham, Hampton with Hampton Wick, Hanworth, Laleham, Littleton ( 1911 ), pp. 146-50 accessed: 18 November 2006 </ ref > However, more recent investigations of documentary and archaeological evidence suggests the concern was located entirely to the north of the High Street and across the river.

Chemical affinity can also refer to the tendency of an atom or compound to combine by chemical reaction with atoms or compounds of unlike composition.

simple: Chemical composition

* Martín-Gil J, Ramos-Sánchez MC, Martín-Gil FJ and José-Yacamán M. " Chemical composition of a fountain pen ink ".

Chemical mineralogy focuses on the chemical composition of minerals in order to identify, classify, and categorize them, as well as a means to find beneficial uses from them.

* Chemical substance, a material with a definite chemical composition

* Chemical composition

* Chemical composition.

Chemical weathering changes the composition of rocks, often transforming them when water interacts with minerals to create various chemical reactions.

* Chemical composition

# Chemical composition including protein, lactate dehydrogenase ( LDH ), albumin, amylase, pH, and glucose

Chemical composition of most armalcolite samples can be decomposed into a sum of metal oxides as follows: TiO < sub > 2 </ sub > ( concentration 71 – 76 %), FeO ( 10 – 17 %), MgO ( 5. 5 – 9. 4 %), Al < sub > 2 </ sub > O < sub > 3 </ sub > ( 1. 48-2 %), Cr < sub > 2 </ sub > O < sub > 3 </ sub > ( 0. 3-2 %) and MnO ( 0-0. 83 %).

In 1924 the Institution of Chemical Engineers adopted the following definition ' A chemical engineer is a professional man experienced in the design, construction and operation of plant and works in which matter undergoes a change of state and composition.

Chemical composition of the coal is defined in terms of its proximate and ultimate ( elemental ) analyses.

Chemical interactions between soils and the atmosphere will be influenced by changes in atmospheric composition.

After the war he was made Reader in Chemical Thermodynamics at Oxford where he experimented in the composition of fuel trying to find compounds which were resistant to freezing and less volatile, devising the concept of " toluene numbers "-now referred to as octane ratings.

In 1998 the Raman effect was designated an International Historic Chemical Landmark in recognition of its significance as a tool for analyzing the composition of liquids, gases, and solids.

** Chemical composition of cobalt blue glass ingots matches those of contemporary Egyptian core-formed vessels and Mycenaean pendant beads, which suggests a common source.

The typical Chemical composition of oven-dried diatomaceous earth is 80 to 90 % silica, with 2 to 4 % alumina ( attributed mostly to clay minerals ) and 0. 5 to 2 % iron oxide.

Chemical composition is one factor ( usually in the sense that more metal-poor clusters have bluer HBs ), but other stellar properties like age, rotation and helium content have also been suggested as affecting HB morphology.

Chemical composition and structure of organic semiconductors can be characterized by infrared spectroscopy, secondary ion mass spectrometry ( SIMS ) and X-ray photoelectron spectroscopy ( XPS ).

* Chemical composition of atmospheres and surfaces of Solar System bodies, including planets, comets and moons ;

Chemical additives, as a third composition component, are practically " invisible " ( except mineral fillers and pigments, if added ) in the composite structure.

* Mohan, VR & Janardhanan, K ( 1994 ) Chemical composition and nutritional evaluation of raw seeds of six ricebean varieties.