Variations in < sup > 53 </ sup > Cr /< sup > 52 </ sup > Cr and Mn / Cr ratios from several meteorites indicate an initial < sup > 53 </ sup > Mn /< sup > 55 </ sup > Mn ratio that suggests Mn-Cr isotopic composition must result from in-situ decay of < sup > 53 </ sup > Mn in differentiated planetary bodies.

Variations in < sup > 53 </ sup > Cr /< sup > 52 </ sup > Cr and Mn / Cr ratios from several meteorites indicate an initial < sup > 53 </ sup > Mn /< sup > 55 </ sup > Mn ratio that suggests Mn – Cr isotopic composition must result from in situ decay of < sup > 53 </ sup > Mn in differentiated planetary bodies.

Modern classification schemes divide meteorites into groups according to their structure, chemical and isotopic composition and mineralogy.

After determining the composition of chosen meteorites, astroecologists performed laboratory experiments that suggest that many colonizing microorganisms and some plants could obtain many of their chemical nutrients from asteroid and cometary materials.

With sufficient data on chemical composition, a causal link could be established between Eros and other S-type asteroids, and those meteorites believed to be pieces of S-type asteroids ( perhaps Eros itself ).

It is now known from study of the sun and primitive meteorites that the solar system was initially almost homogeneous in isotopic composition.

Since Biot's time, analysis of meteorites has resulted in accurate measurements of the chemical composition of the solar system.

Most importantly, none of the samples obtained from the American Apollo and Russian Luna missions, nor the handful of identified lunar meteorites, have a composition that is comparable.

The dust mass spectrometer detected material similar to the composition of carbonaceous chondrites meteorites and also detected clathrate ice.

This makes each planetesimal a ' time capsule ', and their composition can tell us of the conditions in the Solar Nebula from which our planetary system was formed ( see also meteorites and comets ).

This mixing can explain some peculiarities in the composition of solar system bodies such as the presence of interstellar grains in the primitive meteorites and refractory inclusions in comets.

The composition of some meteorites show that differentiation took place in some asteroids.

Lunar origin is established by comparing the mineralogy, the chemical composition, and the isotopic composition between meteorites and samples from the Moon collected by Apollo missions.

This is done primarily through the study of the chemical composition of meteorites and other physical samples.

Although the Earth constantly receives energy from the sun, its chemical composition is essentially fixed, as additional matter is only occasionally added by meteorites.

The composition of these asteroids is similar to a variety of stony meteorites which share similar spectral characteristics.

A spectroscopic analysis showed it to have a composition very similar to the cumulate eucrite meteorites < sup ></ sup >.

Computing relative abundances was achieved through corresponding spectroscopic observations to measurements of the elemental composition of meteorites.

It probably has a primitive composition, similar to that of the carbonaceous chondrite meteorites.

It probably has a primitive composition similar to the carbonaceous chondrite meteorites.

The average composition of the Campo del Cielo meteorites is 6. 67 % Ni, 0. 43 % Co, 0. 25 % P, 87 ppm Ga, 407 ppm Ge, and 3. 6 ppm Ir, with the rest being iron.

He likewise discussed the permeability of rocks by water, and the effects of such infiltration in producing volcanic phenomena ; he dealt with the subject of metamorphism, with the deformations of the Earth's crust, with earthquakes, and with the composition and classification of meteorites.

Modeling of Io's interior composition suggests that the mantle is composed of at least 75 % of the magnesium-rich mineral forsterite, and has a bulk composition similar to that of L-chondrite and LL-chondrite meteorites, with higher iron content ( compared to silicon ) than the Moon or Earth, but lower than Mars.

`` Speed in painting a picture is valid only when it imparts spontaneity and crispness, but unless the artist has lots of experience so that he can control rapid execution, he would do well to take these first sketches and soberly reorder their design to achieve a unified composition.

their principles of composition stand very close to those which appear in the Homeric epics and the hexameter line.

If the photographically realistic continuity of dreams, however bizarre their combinations, denies that it is purely a composition of the brain, it must be compounded from views of diverse realities, although some of them may never be encountered in what we are pleased to call the real life.

Wilson, who defines androids as a " synthetic human being ", distinguishes between three types of androids, based on their body's composition:

Glasses are classified using the Schott Glass letter-number code to reflect their composition and position on the diagram.

Glasses can then be categorised by their composition and position on the diagram.

Subsequently, various modes of Chou's pseudo amino acid composition were developed for improving the quality of predicting subcellular localization of apoptosis proteins based on their sequence information alone.

Since Lavoisier's knowledge of strong acids was mainly restricted to oxoacids, such as ( nitric acid ) and ( sulphuric acid ), which tend to contain central atoms in high oxidation states surrounded by oxygen, and since he was not aware of the true composition of the hydrohalic acids ( HF, HCl, HBr, and HI ), he defined acids in terms of their containing oxygen, which in fact he named from Greek words meaning " acid-former " ( from the Greek οξυς ( oxys ) meaning " acid " or " sharp " and γεινομαι ( geinomai ) meaning " engender ").

This corresponds to their time of composition: Samuel and Kings were probably completed during the exile, at a time when the history of the newly wiped out Hebrew kingdoms was still fresh in the minds of the writers.

The morphologic variations in the size, shape, volume, tissue density, pectoral locale, and spacing of the breasts determine their natural shape, appearance, and configuration upon the chest of a woman ; yet such features do not indicate its mammary-gland composition ( fat-to-milk-gland ratio ), nor the potential for nursing an infant child.

* Chymistry ( 1663 ) – a scientific art, by which one learns to dissolve bodies, and draw from them the different substances on their composition, and how to unite them again, and exalt them to a higher perfection ( Glaser ).

* Analytical chemistry is the analysis of material samples to gain an understanding of their chemical composition and structure.

* Analytical chemistry – analysis of material samples to gain an understanding of their chemical composition and structure.

This half-human and half-animal composition has led many writers to treat them as liminal beings, caught between the two natures, embodied in contrasted myths, both as the embodiment of untamed nature, as in their battle with the Lapiths, or conversely as teachers, like Chiron.

The surface composition is inferred from their neutral ( as opposed to red ) colour and deep absorption at 1. 5 and 2. μm in infrared spectrum .< ref name =" Pinilla-Alonso2007 ">

In spite of the occasional exceptions in early epic, most of the later rules of hexameter composition have their origins in the methods and practices of Homer.

Griffin and Ojeda identify three different classes of hormone based on their chemical composition:

Lancaster's supporters responded that any schoolchild could avoid cheats, given the opportunity, and that the government was not paying for the education, and thus deserved no say in their composition.

Synthetic emeralds are often referred to as " created ", as their chemical and gemological composition is the same as their natural counterparts.

On the other hand, Finland and Austria joined the Eurozone from the beginning although their currencies were not part of the ECU basket ( since they had joined the EU in 1995, two years after the ECU composition was " frozen ").

This idea was represented more emphatically in the composition the monk Filofej addressed to their son Vasili III.

Fats may be either solid or liquid at room temperature, depending on their structure and composition.

In ancient Greek and Roman education, the fable was the first of the progymnasmata -- training exercises in prose composition and public speaking — wherein students would be asked to learn fables, expand upon them, invent their own, and finally use them as persuasive examples in longer forensic or deliberative speeches.

He did not need to prove the common parentage of Sanskrit with Persian, Greek, Latin and German, for previous scholars had long established that ; but he aimed to trace the common origin of those languages ' grammatical forms, of their inflections from composition – a task which no predecessor had attempted.