Sentences with phrase «chemical structures found»

«Small molecules» are a specific class of complex, compact chemical structures found throughout nature.

Not exact matches

In the long term, knowing this structure may allow us to find chemical and mechanical tools to change it — fixing it where it has gone wrong in an individual and improving it where it puts whole populations at risk.

6 While some variation of the «vitalist» hypothesis appears necessary in historical perspective, the recent findings of Nobel - laureate chemist Ilya Prigogine regarding the tendency toward self - organization and greater complexity in dissipative chemical structures shows that the evolution of complexity is itself compatible with, rather than contrary to the general physical principles of thermodynamics.

And third, the chemical structure of vitamin B12 found on some mushrooms, while based on the corrin - type ring structure that is characteristic of vitamin B12, can have important differences from the form of B12 that provides us with full vitamin benefits.

Some chemistry kits are too simple to be of much value but if you research what is available locally, you may find one with a good guide that leads your children through discovery about acids and alkalis, chemical structure and other principles.

They found that the athletes in collision and contact sports had differences in brain structure, function and chemical markers typically associated with brain injury, compared to athletes in non-contact sports.

Then the researchers doused dengue - spreading mosquitoes with a chemical that shuts down the mosquitoes» ability to detect CO2 by blocking a receptor called neuron — cpA, a type of sensory cell found on a small pair of antennalike structures near the mouth called the maxillary palps.

It is emerging that the chemical structure of RNA molecules is extensively modified by specific enzymes normally present in our cells, which are commonly found to be altered in severe medical syndromes and various types of cancers.

Although the physical structure in L1527 is similar to that found in IRAS 16293 - 2422A, the chemical composition is much different.

Plays an important role in the structure of the skeleton and muscles; also found in molecules that help enzymes use ATP to supply energy for chemical reactions in cells.

He first designed an artificial pump two years ago, but it required more than a year of testing prototypes before he found the ideal chemical structure.

Citing how this new technique represents a broad range of chemical structures unlikely to be found using conventional means, Helbling said, «These results are not only interesting from a novelty perspective, but demonstrate the breadth of chemical coverage that our suspect screening affords.»

«We found that the surfaces and crystal structures inside these vents act as catalysts, encouraging chemical changes in the material that settles on them,» says Nathan Hollingsworth, a co-author of the study.

Chemical analysis showed that its structure resembled that of a protein found on T cells.

«The findings are noteworthy not only because this chemical reaction simplifies the laboratory preparation of such species, but also because our study reveals a unique mode of reactivity associated with metal - carbon bonds that are embedded in complex carbon - based structures.

«This latest finding provides a concise and direct synthesis pathway that, due to the structure of the products delivered, will likely be quite valuable for the discovery and development of therapeutic agents,» says Micalizio, whose work focuses on the design of organic chemical reaction methods and strategies to improve medicine and human health.

In recent years, the have presented important new findings about the structure of metal oxides, about the mobility of atoms on their surface and their chemical properties.

The new findings appear in the Journal of the American Chemical Society and represent an important step toward the development of molecular components for the assembly of nanomachines: For the greater the degree of control available, the more complex are the functions that can be performed by such structures.

What they found was totally new: an unknown crystal structure with a chemical composition similar to perovskite.

The only remaining possibility to find the correct structure would have been to take a chemical synthesis of the proposed structures, a very complex task that can take several months.

The team noted that the chemical structure of artemisinin resembles thapsigargin, an inhibitor of an enzyme found in the cells of mammals.

Tropsha was always interested in exploring the relation between chemical structure and function of compounds and in finding a cure for diseases.

These studies show that the DNA found inside mitochondria, the cellular structures whose job is to provide cells with energy, is particularly vulnerable, most probably because they handle oxidative chemical reactions.

These latest findings, published in Molecular Pharmaceutics, a journal of the American Chemical Society, report on the structure - activity relationship (SAR) of the hydroxyl group within the agent's lactone ring.

A team led by Fengzhi Li, PhD, of Roswell Park Cancer Institute has reported significant new findings regarding the chemical structure of the novel anticancer agent FL118.

A 2015 study found this chemical is good at forming the stable, flexible structures needed to build a type of cell membrane.

To find out, Engler and her colleagues extracted cyanogens from the plants and recently emerged butterflies and determined their chemical structures using nuclear magnetic resonance and mass spectroscopy.

They found that the ELVOC formation happens very fast and that the chemical structure of the precursor gases determines how effectively they form ELVOC's.

They fear its chemical structure will make finding an antidote unusually difficult, and that the compound could cause long - lasting health effects in those who do survive exposure.

When comparing the chemical compositions of these stars with the ones found in other cosmic structures, the scientists were surprised to find that the chemical compositions are almost identical, both within and between these groups, and closely match the abundance patterns of the Milky Way outer disk stars.

While stronger chemical control caused molecules to assemble into chain - shaped structures, the effects of stronger entropic controls were found to be more counterintuitive.

Van der Donk asked Drennan, an expert in determining chemical structures of proteins, if she could try to reveal the structure of MPnS, in hopes that it would help them find more variants of the enzyme in other bacteria.

To overcome the problem of visualizing chromatin in an intact nucleus, O'Shea's team screened a number of candidate dyes, eventually finding one that could be precisely manipulated with light to undergo a complex series of chemical reactions that would essentially «paint» the surface of DNA with a metal so that its local structure and 3D polymer organization could be imaged in a living cell.

The team finds that the mineral disassociates into two phases one a magnesium silicate perovskite missing iron, which is represented by the Fe portion of the chemical formula, and a new mineral, that is iron - rich and hexagonal in structure, called the H - phase.

Previous research had found that CTD's chemical structure is modified before and during transcription.

They found that the sunlight changes the chemical structure and physical properties of the particles.

Fortunately, the crosslinks that occur as chemical accidents in our structural tissues have very unusual chemical structures, which are not found in proteins or other molecules that the body makes on purpose.

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.

In addition to extending a relatively new method of determining the chemical composition of planets to examine their internal structure, the team found that the rocky material being accreted by the star could be comprised of minerals that are typically associated with marine life processes here on Earth.

The UniChem connectivity search function allows users to find not only exact matches of their chemical structure across 60 million related molecules from 21 data sources worldwide, but also identifies «equivalent» structures that have the same atom connectivity while differing in stereochemistry or isotopic composition, or which exist in a different salt form.

Algorithms similar to those that organise our email, photos and online banking can also be used to find patterns in chemical data that relate to a material's structure and composition.

Nutrition in a living form often takes a different shape (chemical structure) than its chemicalized form (found in supplements, added to food, or in pill form).

On the other hand, bioidentical hormones have the same chemical structure as those found in the human body.

The term, bioidentical, means a hormone chemical structure which is identical to that found in the human body.

Without collecting any cheese residues, GMP (glycomacropeptides), added ingredients and chemical agents commonly found in traditional WPI, Pronativ ® has a preserved protein structure and properties which optimizes the level of protein per serving

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.

Saturated fat — the kind found in meat and butter — has a different chemical structure from the unsaturated fats found in plant products.

Sterol analogues found in many varieties of plants are combined with specific bacteria and the resulting hormone is bio identical in chemical structure to the hormone produced by the human body.

Ozone is one of the criteria air pollutants and is a form of oxygen, the molecule contains three oxygen atoms and has the same chemical structure whether it is found high in the atmosphere or at ground - level.

Ozone has the same chemical structure whether it is found in the stratosphere or the troposphere.