ScienceDaily: Latest Science News

---

• Scientists observe a new type of topological defect in chiral magnets
• For pediatric patients with Crohn's disease, factors associated with statural growth differ by sex
• Normal brain growth curves for children will aid in diagnoses
• Remote control for plants
• Dying cells protect their neighbors to maintain tissue integrity
• Elevated warming, ozone have detrimental effects on plant roots, promote soil carbon loss
• Anti-tumor agent from the intestine
• New 3D printable phase-changing composites can regulate temperatures inside buildings
• Genetics: Biosynthesis pathway of a new DNA nucleobase elucidated
• Huge volcanic eruption disrupted climate but not human evolution
• Seeing with radio waves
• Exposure to light with less blue before sleep is better for energy metabolism
• New theoretical model of high-temp superconductivity: Electrical current flowing with zero resistance
• Ecologists compare accuracy of Lidar technologies for monitoring forest vegetation
• A peek inside a flying bat's brain uncovers clues to mammalian navigation
• Supervolcano fed from Earth's mantle caused crustal plates to rotate
• Research reveals structure of nanomachine that assembles a cell's energy control system
• Team find brain mechanism that automatically links objects in our minds
• Sample preparation in forensic toxicological analysis may have huge impacts
• Brain mapping method illuminates targets for treating neuropsychiatric symptoms

Scientists observe a new type of topological defect in chiral magnets Posted: 10 Jul 2021 06:11 AM PDT Scientists used Lorentz transmission electron microscopy (LTEM) to visualize topological defects. They were able to do so by passing electrons and observing their deflections through a thin magnetic film. The topological defects were observed as contrasting pairs of bright and dark areas. Using this technique, the team imaged topological defects in a chiral magnetic thin film made of cobalt, zinc, and manganese.

For pediatric patients with Crohn's disease, factors associated with statural growth differ by sex Posted: 09 Jul 2021 04:36 PM PDT Growth impairment, a common complication of Crohn's disease in children, occurs more often in males than females, but the reasons are unclear. Now, a physician-scientists have found that factors associated with statural growth differ by sex.

Normal brain growth curves for children will aid in diagnoses Posted: 09 Jul 2021 04:36 PM PDT In the United States, nearly every pediatric doctor's visit begins with three measurements: weight, height and head circumference. Compared to average growth charts of children across the country, established in the 1970s, a child's numbers can confirm typical development or provide a diagnostic baseline to assess deviations from the curve. Yet, the brain, of vital importance to the child's development, is merely hinted at in these measurements.

Remote control for plants Posted: 09 Jul 2021 04:36 PM PDT Plant researchers have a potent new tool at disposal: A research team now shows how to close the stomata of leaves using light pulses.

Dying cells protect their neighbors to maintain tissue integrity Posted: 09 Jul 2021 04:35 PM PDT To enable tissue renewal, human tissues constantly eliminate millions of cells, without jeopardizing tissue integrity, form and connectivity. The mechanisms involved in maintaining this integrity remain unknown. Scientists now reveal a new process which allows eliminated cells to temporarily protect their neighbors from cell death, thereby maintaining tissue integrity.

Elevated warming, ozone have detrimental effects on plant roots, promote soil carbon loss Posted: 09 Jul 2021 04:35 PM PDT Two factors that play a key role in climate change - increased climate warming and elevated ozone levels - appear to have detrimental effects on soybean plant roots, their relationship with symbiotic microorganisms in the soil and the ways the plants sequester carbon.

Anti-tumor agent from the intestine Posted: 09 Jul 2021 10:50 AM PDT Certain metabolites of bacteria from the intestine make immune cells more aggressive as a new study conducted by scientists reveals. The findings could help improve cancer therapies.

New 3D printable phase-changing composites can regulate temperatures inside buildings Posted: 09 Jul 2021 10:04 AM PDT Changing climate patterns have left millions of people vulnerable to weather extremes. As temperature fluctuations become more commonplace around the world, conventional power-guzzling cooling and heating systems need a more innovative, energy-efficient alternative, and in turn, lessen the burden on already struggling power grids.

Genetics: Biosynthesis pathway of a new DNA nucleobase elucidated Posted: 09 Jul 2021 10:01 AM PDT DNA is composed of nucleobases represented by the letters A, T, G and C. But in a bacteriophage, another base, represented by the letter Z, exists. Scientists have now elucidated the biosynthesis pathway of this base.

Huge volcanic eruption disrupted climate but not human evolution Posted: 09 Jul 2021 10:00 AM PDT A massive volcanic eruption in Indonesia about 74,000 years ago likely caused severe climate disruption in many areas of the globe, but early human populations were sheltered from the worst effects, according to a new study.

Seeing with radio waves Posted: 09 Jul 2021 07:42 AM PDT Researchers have achieved micrometer spatial resolution for radio-frequency imaging of nitrogen-vacancy centers in diamond by enhancing the signal with quantum spin-locking. This work may lead to more accurate material characterization, medical diagnostics, and quantum computers.

Exposure to light with less blue before sleep is better for energy metabolism Posted: 09 Jul 2021 07:42 AM PDT Researchers have found that exposure to specific types of light before sleep can have variable effects on energy metabolism during sleep. Specifically, participants who went to sleep after exposure to organic light-emitting diodes (OLEDs), which emit polychromatic white light that contains less blue light than light-emitting diodes (LEDs), exhibited significantly decreased energy expenditure, core body temperature, and increased fat oxidation, indicating fewer negative health consequences compared with after nighttime exposure to LEDs.

New theoretical model of high-temp superconductivity: Electrical current flowing with zero resistance Posted: 09 Jul 2021 07:42 AM PDT A researcher has introduced a new theory for superconductivity that can better explain the results of recent experiments with high-temperature superconductors. By focusing on the 'Berry connection,' this work may lead to energy distribution with much less electrical resistance.

Ecologists compare accuracy of Lidar technologies for monitoring forest vegetation Posted: 08 Jul 2021 03:59 PM PDT As light detection and ranging (lidar) technology evolves, forest ecology and ecological restoration researchers have been using these tools in a wide range of applications.

A peek inside a flying bat's brain uncovers clues to mammalian navigation Posted: 08 Jul 2021 11:38 AM PDT The ability to focus on where we will be in the near future, rather than where we are at present, may be a key characteristic of the mammalian brain's built-in navigation system, suggests a new study. The researchers wirelessly tracked the brain activity of flying Egyptian fruit bats, finding that neural activity in the bats' hippocampuses more strongly represented future locations than current locations.

Supervolcano fed from Earth's mantle caused crustal plates to rotate Posted: 08 Jul 2021 10:53 AM PDT The plates of the Earth's crust perform complicated movements that can be attributed to quite simple mechanisms. That is the short version of the explanation of a rift that began to tear the world apart over a length of several thousand kilometers 105 million years ago.

Research reveals structure of nanomachine that assembles a cell's energy control system Posted: 08 Jul 2021 10:53 AM PDT Researchers have determined the structure of a tiny multi-protein biological machine, furthering our understanding of human cells and helping to enhance research into cancer, neurodegeneration and other illnesses.

Team find brain mechanism that automatically links objects in our minds Posted: 08 Jul 2021 10:47 AM PDT When people see a toothbrush, a car, a tree -- any individual object -- their brain automatically associates it with other things it naturally occurs with, allowing humans to build context for their surroundings and set expectations for the world. By using machine-learning and brain imaging, researchers measured the extent of the 'co-occurrence' phenomenon and identified the brain region involved.

Sample preparation in forensic toxicological analysis may have huge impacts Posted: 08 Jul 2021 08:15 AM PDT In a new article, researchers provide an overview of sample preparation techniques and information on routine sample types that may be encountered in forensic toxicology cases.

Brain mapping method illuminates targets for treating neuropsychiatric symptoms Posted: 08 Jul 2021 08:14 AM PDT Researchers developed a new brain mapping approach that may help clarify the cause of a variety of neuropsychiatric conditions and identify promising stimulation sites to target therapeutically.

You are subscribed to email updates from Latest Science News -- ScienceDaily. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States