Sentences with phrase «study chemical compositions»

This instrument will combine advanced adaptive optics to correct for the blurring effects of Earth's atmosphere, a coronagraph to block the glare of the parent star, and advanced spectral capabilities to image exoplanets and study their chemical compositions.

MIT also studied the chemical composition of the papyrus and patterns of oxidation.

The finding is «a massive advance in our understanding of tomato fruit development and ripening,» says Alisdair Fernie, who studies the chemical composition of tomatoes at the Max Planck Institute of Molecular Plant Physiology in Potsdam, Germany.

That suggests thin films of water have formed at the location in the past, so studying the chemical composition can reveal much more about the martian past.

For example, while still in its scientific checkout phase, scientists using ALMA have found evidence for Earth - mass planets around nearby stars; as it nears its full complement of 66 antennas, ALMA will deduce the presence of many more exoplanets and study the chemical composition of the planetary nurseries.

He studies the chemical composition of rocks.

As a geochemist, Matter studies the chemical composition of solid material on Earth — and how it changes.

While the finding will provide a new angle for scientists to study the chemical composition and structure of rocky planets, the possibility that life may have contributed to the inferred mineralogy certainly intrigued the team.

The Webb telescope, using spectroscopy to study the chemical composition of such disks, will be able to examine this finding in greater detail, pinpointing just how much water is present in the region close to the star, and looking at whether the discovery extends to lower - mass stars and even dim «brown dwarf» stars.

It began with the research of Richard Willstätter, a German chemist who studied the chemical composition of chlorophyll in 1913 and found that its structure is very similar to that of heme, the oxygen - transporting part of hemoglobin in blood.

Not exact matches

In the vast majority of cases that have been studied, mixtures of chemicals change in composition, as time proceeds, in such a way as to approach a condition of chemical equilibrium.

We will also apply for more observation time on the ALMA telescope to study the planet - forming discs in even higher resolution to get more detailed information about their chemical composition,» says Jes Jørgensen, associate professor in the research group Astrophysics and Planetary Science at the Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen.

In a new study, Scripps Institution of Oceanography at the University of California San Diego Professor James Day and colleagues examined the chemical composition of zinc and other volatile elements contained in the green - colored glass, called trinitite, which were radioactive materials formed under the extreme temperatures that resulted from the 1945 plutonium bomb explosion.

HERA will not be able to directly analyze the chemical composition of those early objects (such work is done with a technique called spectroscopy), but Hewitt said it will be possible to learn something about the characteristics of those early objects by studying their interaction with the hydrogen that surrounded them.

In the study, published online June 3, 2014 in the journal Nutrition, Keck School of Medicine researchers analyzed the chemical composition of 34 popular beverages, finding that beverages and juices made with high fructose corn syrup (HFCS), such as Coca - Cola, Pepsi, Dr Pepper, Mountain Dew and Sprite, all contain 50 percent more fructose than glucose, a blend that calls into question claims that sugar and HFCS are essentially the same.

Reheis has studied the dust covering much of the western United States, analyzing its chemical composition to determine where it came from.

The team plans to study the exact composition of this chemical attractant, as well as the mechanisms of its release and reception in the future.

Knowing how the internal and surface structure of a battery material changes over a wide range of chemical compositions will aid future studies on cathode transformations and could also lead to the development of new battery materials.

The team studied the binary system and the chemical composition of the debris by measuring the absorption of different wavelengths of light or «spectra», using the Gemini Observatory South telescope and the European Southern Observatory Very Large Telescope, both located in Chile.

«Understanding the links between stratospheres and chemical compositions is critical to studying atmospheric processes in exoplanets,» said co-author Nikku Madhusudhan of the University of Cambridge, United Kingdom.

The proposal better explains why Mars has such a different chemical composition than Earth, says Stephen Mojzsis, a study coauthor and geologist at the University of Colorado Boulder.

The new study, led by the expert Andrea Hevia, researcher at CETEMAS - Asturias, analysed temporary changes in the chemical composition of annual growth tree rings in the Pyrenees, in particular those in subalpine black pine (Pinus uncinata) forests in the national parks in Ordesa and Monte Perdido, and Aigüestortes and Estany de Sant Maurici.

These studies revealed that the new template's ability to mediate the attachment of a new functional group to a distant carbon atom can be «tuned» by making slight changes to its chemical composition, including the choice of the proper metal catalyst at its working end.

A more generalized version of the technique, nuclear magnetic resonance (NMR), also offers enormous benefits, enabling scientists to characterize the chemical compositions of materials as well as the structures of proteins and other important biomolecules without having to penetrate the objects under study physically.

Said Madhusudhan, «Our study shows that extraterrestrial worlds can be extremely diverse in their chemical compositions, including many that are drastically different from our earthly experience.»

Now, scientists have studied the sparkling wine's chemical composition and performed aroma and taste analyses to reveal details about the champagne - making process in times past.

The studies show that different pathophysiologies — lupus, infectious diarrhea and obesity — may be segregated based on the composition of the chemical species found in the gastrointestinal tract.

Paul Fraser, Professor of Biochemistry at Royal Holloway said: «The study also shows how you can precisely alter fruit ripening properties without adverse effects on the chemical composition of the fruit.

The mineralogist and his colleagues from the University of Alberta in Canada and universities in the USA and Spain have produced a comprehensive study of the chemical composition of Earth's atmosphere since the Triassic period.

Andrew Steele, an astrobiologist at the Carnegie Institution of Washington, and his colleagues analyzed an Apollo 17 sample with a technique called Raman spectroscopy, which gives a detailed chemical composition of the material under study.

Ten exoskeleton specimens were studied, and experimental analyses were performed using laboratory techniques including scanning electron microscopy and electron diffraction spectroscopy, revealing details about the structure and chemical composition.

The researchers used high - resolution scanning electron microscopy with energy dispersive x-ray analysis to study microstructure and elemental composition, and high - resolution x-ray photoelectron spectroscopy for more detailed chemical characterization.

Dr. Yu has led and participated in many field studies for in situ measurements of aerosols and determination of their chemical compositions and physical characteristics.

They studied how this spontaneous voltage depends on the current direction, temperature, and the chemical composition (the level of doping by strontium, which controls the electron density).

In this study, a series of perpendicular lamellae - forming high - chi block copolymers have been developed based on the bottom - up concept of a simple yet effective material that adjusts the chemical properties and molecular composition of the material.

«Particle pathways are tricky because they can form what appear to be crystals with the traditional faceted surfaces or they can have completely unexpected shapes and chemical compositions,» said Dove, the corresponding author of the study and a member of the National Academy of Sciences.

«Understanding the links between stratospheres and chemical compositions is critical to studying atmospheric processes in exoplanets,» co-author Nikku Madhusudhan from the University of Cambridge, said in the statement.

The researchers added that one of the next steps in understanding these materials is to study the relation between the local chemical composition and performance over different length and time scales under operating conditions.

«We are interested in understanding how sunlight affects the chemical composition of organic particles,» said Dr. Adam Bateman, who worked on this and other global change studies.

Of course, a telescope like this would then be able, once an asteroid is detected, to make very detailed studies of its chemical composition - how it's kept together, etc..

It enables robust tuning of the composition of catalytic materials to optimize the activity, selectivity, and stability, and the application will be very broad in energy conversions and chemical transformations,» says Chao Wang, assistant professor of chemical and biomolecular engineering at Johns Hopkins University and one of the study's authors.

Using the European XFEL's brilliant X-ray radiation, physicists, chemists, biologists, and other scientists from all over the world will be able to map the atomic details of viruses, decipher the molecular composition of cells, take three - dimensional images of the nanoworld, film chemical reactions, study processes such as those occurring deep inside planets, and more.

The study was carried out to answer a long - standing puzzle — why are Earth and lunar rocks more similar than expected in terms of chemical composition?

The moon may have formed when a primordial planet with a chemical composition strikingly similar to that of Earth collided with our planet, according to a new study published Thursday in the journal Nature.

A team of researchers from the University of Navarra, in Spain, recently published the results of a study examining the chemical composition of used coffee granules.

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The composition of human flatus has been studied (Suarez et al. 1997; Tomlin et al. 1991), and comprises mostly nitrogen and oxygen (derived from air that has been swallowed or diffusion from the blood), and carbon dioxide, hydrogen, and methane (arising intraluminally from chemical reactions and bacterial fermentation).

The best studies we have use dendrochronology and ice core chemical composition to tell us about how CO2 levels and warming are related in the long term.

A new taxpayer - funded NASA / Penn State «scientific» study warns that «ecosystem - valuing universalist» (really «green») aliens might realize that we have been altering «the chemical composition of Earth's atmosphere,» conclude that we have «ecological destructive tendencies,» and «wipe humanity out in order to preserve the Earth system as a whole.»

GCM sensitivity studies (Boucher and Anderson, 1995) and column calculations (Nemesure et al., 1995) show that the radiative forcing is a strong function of relative humidity but relatively insensitive to chemical composition.