Chemistry & Physics
When a person tries to access a memory, their brain quickly sifts through everything stored in it to find the relevant information. But as we age, many of us have difficulty retrieving memories. In a review publishing in the journal Trends in Cognitive Sciences on February 11, researchers propose an explanation for why this might be happening: the brains of older adults allocate more space to accumulated knowledge and have more material to navigate when attempting to access memories. While this wealth of prior knowledge can make memory retrieval challenging, the researchers say it has its upsides—this life experience can aid with creativity and decision-making.
- Trends in Cognitive Sciences
- Natural Sciences and Engineering Research Council of Canada, Canadian Institutes of Health Research
What The Study Did: This study of 2.5 million military veterans serving after the September 11, 2001, terrorist attacks examined the association of traumatic brain injury with mortality and compared mortality rates for this group with rates for the total U.S. population.
- JAMA Network Open
Colorado State University researchers led by Daniel Olsen, professor in the Department of Mechanical Engineering, and Bret Windom, associate professor in the same department, are among 12 teams receiving a total of $35 million in research funding from the Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E). The funding program supports research in reducing emissions of methane, a greenhouse gas 25 times more potent than carbon dioxide. The projects support the U.S. Methane Emissions Reduction Action Plan, announced at the 2021 United Nations Climate Change Conference.
- DOE/US Department of Energy
As one of the most important quality traits in crop plants, fruit color is determined by plant pigments such as carotenoids, anthocyanins, chlorophylls, and betalains. Among these plant pigments, carotenoids, derived from isoprenoids, represent the largest class of natural pigments in plants. Carotenoids contribute red, yellow, and orange colors to ripe fruit, thus attracting frugivores to promote seed dispersal. In tomato, fruit color is associated with the ratio of β-carotene to lycopene, as these are the two most abundant carotenoids in tomatoes. In red-fruited tomatoes, a massive accumulation of lycopene leads to a low β-carotene/lycopene ratio, whereas yellow-fruited tomatoes exhibit markedly reduced levels of lycopene, β-carotene, and total carotenoids. In some orange-fruited tomatoes, lycopene content decreases sharply, while the β-carotene content declines only slightly, resulting in a higher β-carotene/lycopene ratio. Although considerable efforts have been expended to understand the molecular basis of tomato fruit color via carotenoid synthesis, the molecular mechanisms underlying the orange-fruited phenotype have been elusive.
- Horticulture Research
Sepideh Razavi, in the School of Chemical, Biological and Materials Engineering at the University of Oklahoma, has received a National Science Foundation Faculty Early Career Development (CAREER) award for her project titled “Decoding the dynamics of complex fluids near surfaces and interfaces.” The $551,577 award will provide five years of funding to support her work to advance our understanding in wetting, spreading and evaporation of multi-component fluidic droplets on different surfaces.
- National Science Foundation
University of Oklahoma scientist Thirumalai Venkatesan's research is re-imagining fundamental electronic circuit elements by expressing complex logic in nanometre-scale material properties.