Earth
Fewer of the world's large aquifers are depleting than previously estimated, according to a new study by the University of Sussex and UCL.
Groundwater, the world's largest distributed store of freshwater, plays a critical role in supplying water for irrigation, drinking and industry, and sustaining vital ecosystems.
An international team of physicists from Bielefeld University, Uppsala University, the University of Strasbourg, University of Shanghai for Science and Technology, Max Planck Institute for Polymer Research, ETH Zurich, and the Free University Berlin have developed a precise method to measure the ultrafast change of a magnetic state in materials. They do this by observing the emission of terahertz radiation that necessarily accompanies such a magnetization change.
NASA's Terra satellite passed over the Gulf of Mexico early on Aug. 25 and found a very small area of convection from post-tropical cyclone Marco, northeast of its center. All watches and warnings have been dropped as the storm continues to weaken toward dissipation.
Visible imagery and surface observations indicated that Marco made landfall around 7 p.m. EDT on Aug. 24 near the mouth of the Mississippi River. The center continued to move west and moved offshore and south of Louisiana by Aug. 25.
NASA's Terra Satellite Reveals Effects of Wind Shear
During the process of cellular protein synthesis mistakes can happen. Sometimes, proteins end up being misfolded. They do not shape up into the specific 3-D structure that is required for proper function. Misshaped secreted and transmembrane proteins usually trigger safety mechanisms that dispose of them by shuttling them from their place of synthesis, the endoplasmic reticulum (ER), to the cytosol, where they are degraded in a cellular structure called proteasome.
Chemotherapy works by attacking rapidly dividing cells within the body. But small pockets of cancer cells can withstand its assault, allowing the cancer eventually to return.
Gaining a better understanding of why some cancer cells survive while others die is critical for making chemotherapy more effective, says Jun Hee Lee, Ph.D., a cancer researcher at the University of Michigan Rogel Cancer Center.
There are up to a hundred different receptors on the surface of each cell in the human body. The cell uses these receptors to receive extracellular signals, which it then transmits to its interior. Such signals arrive at the cell in various forms, including as sensory perceptions, neurotransmitters like dopamine, or hormones like insulin.
Recently, Professor Liu Xiongjun's group at the International Center for Quantum Materials (ICQM) of Peking University, together with Professor Du Jiangfeng and Professor Wang Ya at University of Science and Technology of China, published a paper in Phys. Rev. Lett. reporting a progress on quantum simulation for 3D chiral topological phase [Phys. Rev. Lett. 125, 020504 (2020)]. This is the latest progress on the topic of characterization of equilibrium topological phases by non-equilibrium quantum dynamics, as proposed by Liu's group in the recent years.
A team led by the Department of Energy's Oak Ridge National Laboratory created a computational model of the proteins responsible for the transformation of mercury to toxic methylmercury, marking a step forward in understanding how the reaction occurs and how mercury cycles through the environment.
A comparison of the results for conventional point source pollution and bottleneck carbon emissions sources shows that oil and natural gas pipelines are far more important than simple point-source emissions calculations would indicate. It also shifts the emissions liability towards the East Coast from the Midwest.
For those not involved in chemistry or biology, picturing a cell likely brings to mind several discrete, blob-shaped objects; maybe the nucleus, mitochondria, ribosomes and the like.
There's one part that's often overlooked, save perhaps a squiggly line indicating the cell's border: the membrane. But its role as gatekeeper is an essential one, and a new imaging technique developed at the McKelvey School of Engineering at Washington University in St. Louis is providing a way to see into, as opposed to through, this transparent, fatty, protective casing.
New Rochelle, NY, August 25, 2020--Digital technology has had a transformative effect on our romantic lives. This scoping review reports on measurable outcomes for the three stages of the romantic relationship lifecycle - initiation, maintenance, and dissolution -- as described in the peer-reviewed journal Cyberpsychology, Behavior, and Social Networking. Click here to read the article now.
An innovative technique to improve cancer treatments using tumour biopsies less than 30 minutes after they're taken has been developed at The University of Queensland.
The 'Drug uptake in ex Vivo tumours' technique was developed after researchers found fresh patient tumour biopsies responded differently to treatments than the tissue cultures traditionally used.
Its inventor, UQ Diamantina Institute's Dr Fiona Simpson, said it could be used to show how long antibodies stayed active in patients, or when antibodies were taken into the tumour where they're destroyed.
A mystery surrounding the space around our solar system is unfolding thanks to evidence of supernovae found in deep-sea sediments.
Professor Anton Wallner, a nuclear physicist at ANU, led the study which shows the Earth has been travelling for the last 33,000 years through a cloud of faintly radioactive dust.
"These clouds could be remnants of previous supernova explosions, a powerful and super bright explosion of a star," Professor Wallner said.
The plastic tips attached to the ends of shoelaces keep them from fraying. Telomeres are repetitive DNA (deoxyribonucleic acid) sequences that serve a similar function at the end of chromosomes, protecting its accompanying genetic material against genome instability, preventing cancers and regulating the aging process.
Population density, and not the proportion of green spaces, has the biggest impact on species richness of pollinators in residential areas. This is the result of a study from Lund University in Sweden of gardens and residential courtyards in and around Malmö, Sweden.
The result surprised the researchers, who had expected that the vegetation cover would be more significant.