Sentences with phrase «chemical differences found»

A group of former and current Arizona State University researchers say chemical differences found between rocks samples at volcanic hotspots around the world can be explained by a model of mantle dynamics that involves plumes, upwellings of abnormally hot rock within the Earth's mantle, that originate in the lower mantle and physically interact with chemically distinct piles of material.

Not exact matches

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.

Below you will find out what are the differences between baby wipes, which are the most efficient and which contain dangerous chemicals.

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.

While they did not find any conclusive differences between the three years, it is possible that extreme weather events could lead to more dramatic differences between the chemical fingerprints of some annual rings, and the authors conclude that more extensive sampling is required.

To further assess the differences in these various populations within individuals, Anderson, Ping and their team found that chemical messengers called cytokines and chemokines «can be concentrated in semen by several orders of magnitude» over those in the blood.

As reported in the November 3 Journal of Neuroscience, researchers at the National Institute of Mental Health found evidence of seasonal differences in dopamine — a chemical messenger involved in motivation, pleasure, movement and learning.

Howard Hughes Medical Institute (HHMI) scientists have profiled key features of the genetic material inside three types of brain cells and found vast differences in the patterns of chemical modifications that affect how the genes in each type of neuron are regulated.

But the scant differences found so far «offer only slim hope that something useful will come out,» says Barbara Hatch Rosenberg, director of the Federation of American Scientists» Chemical and Biological Arms Control Program, who has closely watched the federal investigation.

The findings, reported in Biology Letters, reveal that chemical context makes all the difference to the trap - jaw ant (Odontomachus brunneus), said University of Illinois postdoctoral researcher Adrian Smith, who led the study with U. of I. entomology professor and animal biology department head Andrew Suarez.

«From the chemical standpoint,» the critical difference between «efficient» native diets and diets characterized by the «displacing foods of modern commerce,» according to Dr. Price, was that «all the efficient dietaries were found to contain two to six times as high a factor of safety in the matter of bodybuilding material, as the displacing foods» (emphasis added).11 The foods that served a «bodybuilding» purpose varied substantially according to the group and location studied, but in all instances, traditional societies emphasized the most nutrient - dense land and sea animal and plant foods that could be obtained in their context, ranging from the exceptionally high - vitamin dairy products, whole rye sourdough bread and occasional meat of the isolated Swiss to the fish, cereals and sweet potatoes of Kenya's Maragoli tribe.