ניווט נגישות
כתבות אחרונות מאתר 'Phys'
Phys

Mother bats' hearts beat faster at the sound of their own babies' cries‎

A mother bat has one crucial challenge: find her own babies among hundreds of other bats in the colony. Making sure she cares for and nurses only her own offspring is important to ensuring their survival. Among Japanese house bats, mothers keep track of their pups using the babies' isolation calls.

07:23
תפריט כתבה
Phys

How we mark our ballot can affect how we feel about voting. Here's why‎

Have you ever left a polling place feeling that your mark on the ballot didn't quite say what you wanted it to? Perhaps you liked two candidates but had to drop one, or backed the one who might actually win over the one you preferred.

06:15
תפריט כתבה
Phys

Beyond hearing: Sensing when conversation becomes difficult‎

About six years ago, hearing researcher Dr. Kelly Miles had a stroke just a week after having a baby.

04:41
תפריט כתבה
Phys

How Zimbabwe's government turned international condemnation into political ammunition‎

International pressure intended to encourage democratic reform can sometimes strengthen the very governments it seeks to hold to account, according to new research from The University of Manchester.

04:25
תפריט כתבה
Phys

New test measures potentially harmful metals in cellulose food packaging‎

A technique for detecting potentially harmful metals in regenerated cellulose food packaging is discussed in the International Journal of Environment and Pollution. The new tool can be used for safety assessments of materials increasingly used as alternatives to conventional plastics.

04:11
תפריט כתבה
Phys

Autonomous triangular modules could build tomorrow's mega-observatories‎

Private companies are getting better at launching more mass into space with larger rockets. But there is still a major constraint on the size of objects we can get into orbit—fairing size. This places physical constraints on the overall shape of what we can launch and severely limits the sizes of, say, a communications array or a power satellite. But a new paper from researchers at Nanjing University of Aeronautics and Astronautics and the Beijing Institute of Technology offers a solution—a self-shaping, deployable module that can fine-tune both its positioning and its own dimensions. The findings are published in the journal Space: Science & Technology.

03:45
תפריט כתבה
Phys

Researchers develop AI tool to map microRNA binding sites on circular RNAs‎

Circular RNAs (circRNAs) are loop-shaped molecules that can influence gene regulation through interactions with microRNAs (miRNAs). This matters because circRNAs can exist as different full-length isoforms, and their back-splice junction (BSJ) connects the two ends of the RNA. Treating a circular RNA like a linear transcript can therefore overlook sequence information near this junction.

03:22
תפריט כתבה
Phys

Acupuncture and mutual exchange in Chinese and Soviet science‎

Previous accounts of the scientific relationship between communist China and the Soviet Union have depicted it as one of subordination, with the Russians exporting knowledge to the Chinese or scavenging from their bodies of knowledge. A new article in Isis, however, posits that the relationship between Chinese and Soviet scientists was instead one of mutual exchange. In "Brief Encounter: Acupuncture, Pavlov, and Scientific Exchange Between China and the Soviet Union, 1949-1961," authors Liang Wan, Simon Huxtable and Sarah Marks explore the role of acupuncture in uniting the Pavlovian science of the Soviets and traditional Chinese medicine, forming an arena for Sino-Soviet collaboration.

03:03
תפריט כתבה
Phys

Light-activated catalyst makes sustainable production of hydrogen peroxide more efficient‎

Hydrogen peroxide (H₂O₂) is a versatile chemical feedstock whose industrial production relies predominantly on an energy-intensive process with a substantial environmental footprint. One alternative is to produce it using a catalyst activated by light. In an international research project involving the Max Planck Institute of Colloids and Interfaces, researchers have now developed a synthesis strategy that allows them to precisely control the spatial arrangement of ions in a carbon nitride. The resulting photocatalyst is three times as efficient as conventional green production methods. The findings have been published in Advanced Materials.

02:49
תפריט כתבה
Phys

Material substitution can increase the potential environmental impact of packaging systems‎

New research suggests that replacing polyethylene (PE) packaging with paper, glass, aluminum or steel often does not reduce environmental impacts across a product's life cycle.

02:49
תפריט כתבה
דיווח על כתבה זו הסתרת כתבות מאתר זה המשך קריאה באתר המקור