Their work was based on the valence bond model, which assumes that a chemical bond is formed when there is good overlap between the atomic orbitals of participating atoms.

Their merger is called chemical synthesis or an addition reaction.

Their high risk / high payoff technology is aimed at solving the national level problems of protection from biological, chemical and information attack and to provide operational dominance for mobile distributed command and control, combined manned / unmanned warfare, and dynamic, adaptive military planning and execution.

Their mobility, however, decreases the chemical resistance of the glass, allowing leaching by water and facilitating corrosion.

Their fur may serve as a chemical defence, as it is full of parasite repellents that give the animal a characteristic scent.

Their work on production of sal ammoniac from soot led to their partnership in a profitable chemical works, manufacturing the crystalline salt which was used for dyeing, metalworking and as smelling salts and previously was available only from natural sources and had to be imported from Egypt.

Their color, shape, size, attachment, ornamentation, and reaction to chemical tests often can be the crux of an identification.

Their destruction by chemical, thermal, and biochemical processes is extremely difficult, and presents the risk of generating extremely toxic dibenzodioxins and dibenzofurans through partial oxidation.

Their commercial utility was based largely on their chemical stability, including low flammability, and desirable physical properties, including electrical insulating properties.

Their chemical and physical stability has also been responsible for their continuing persistence in the environment, and the lingering interest decades after regulations were imposed to control environmental contamination.

Their system typically used Walter HWK 500 Starthilfe (" start-help ") rocket engines driven by chemical decomposition of " T-Stoff ", essentially almost pure hydrogen peroxide.

Their chemical defense, though unusual, is effective, as illustrated by this extract from Charles Darwin's Voyage of the Beagle:

Their investigation vindicated Carson's work, and led to an immediate strengthening of chemical pesticide regulations .< ref >

Their son, Hermann, born in 1902, would later also commit suicide because of his shame over his father's chemical warfare work.

Their chemical compositions are very different.

Their speciality can be all fields of engineering: civil, structural, electrical, mechanical, chemical, physics and even computer science.

Their emissions are examined across all parts of the electromagnetic spectrum, and the properties examined include luminosity, density, temperature, and chemical composition.

Their forelegs have chemoreceptors located in the foretarsi that assess the chemical makeup of the leaf and use that information to decide if it is an acceptable spot.

Their size and edge crystallography govern their electrical, magnetic, optical and chemical properties.

Their potential use as chemical warfare agents soon became apparent, and the Nazi government put Schrader in charge of developing organophosphate ( in the broader sense of the word ) nerve gases.

Their chemical compositions, as measured by APXS, are significantly different from each other.

Their major operational role is to provide a chemical decontamination capability in support of the Army Medical Services.

Their respective chemical compositions are the following:

Their work bore fruits in the summer of 1936, when chemical engineers of the Agfa company in Germany tested their new material Agfacolor at the swimming competition of the 1936 Summer Olympics in Berlin.

Their irregular composition suggesting that this was a lower temperature not entirely liquid process.

Their structures are thought to consist of an outer layer of molecular hydrogen, surrounding a layer of liquid metallic hydrogen, with a probable molten core with a rocky composition.

Their third album Drums and Wires contained the band's first major hit single " Making Plans for Nigel " ( another Moulding composition ), which caused a minor controversy because of its lyrical reference to British Steel.

Their characteristic composition is the " Carnival Tango ", and they alternate comical and serious repertory.

Their formation can be the result of localized precipitation due to small differences in composition or porosity of the host rock, such as around fossils, inside burrows or around plant roots.

Their organisation, composition and competence is regulated by law ; delegation is possible ( Subarticle 2 ).

Their last Rascals album was Search and Nearness (# 198 U. S .), which featured Brigati's lead vocals on the Cornish-penned " You Don't Know " and a cover of The Box Tops ' hit " The Letter ", and drummer Danelli's composition " Fortunes ".

Their original composition " Love in a Vacuum " ( credited to all members of the group ) received a fair amount of airplay on the station, and the group was eventually signed to Epic Records.

Their composition, " When the Kissing Stops " made it to the final eight, but although initially tempted, the group decided not to perform the number themselves (" We all agreed it would be better to be remembered as winners, and we couldn't bear to lose!

Their work proved difficult because of the composition of the soil, which made identifying the strata of the site and its chronology difficult.

Their composition, however, as well as their effective powers, varied greatly at different times.

Their success at this was variable due to a lack of familiarity with European rules of composition.

Their composition, " Baroque Hoedown ", from their 1967 album, " Kaleidoscopic Vibrations " was adopted by Disney for their " Starlight Parade " event at Disneyland and Disneyworld, and was used by filmmaker Mike Jittlov for the " Mouse Mania " animated short film he made for Disney's Mickey Mouse 50th anniversary TV special in 1978.

Their first hit composition was " Hard Times ", recorded by Charles Brown, which was a rhythm and blues hit in 1952.

Their composition " Pearl's A Singer " ( written with Ralph Dino & John Sembello ) became a hit for Brooks, and remains her signature tune.

Their precise origins and composition remain obscure.

Their composition was well known within the pharmacy trade, and druggists would sell ( for a slightly lower price ) medicines of almost identical composition which they had manufactured themselves.

Their poetic works do in fact indicate a close relationship, if only as authors, with similarities in theme and composition, style and phrasing, but it is not easy to work out who was responding to whom, especially since ' publication ' was a gradual process in those days, with shared readings of drafts and circulation of private copies: " In these circumstances interrelationships between writers who habitually cross-refer and allude to one another are likely to be complex.

Their color varies depending on the composition of the sand they formed in, ranging from black or tan to green or a translucent white.

Their composition has been essentially stable, but their use within ranked systems varies.

Their tone shows the change in Faustus's ambitions, suggesting Marlowe did oversee the composition of them.

Their exact date of composition is unknown ; Keats simply dated " Ode on a Grecian Urn " May 1819, as he did its companion odes.