Новости за 01.05.2024

Researchers uncover why some homes in rural Madagascar where bubonic plague is endemic are infested with fleas. Based on their findings, they recommend ways to reduce the flea populations and their impact on human health.

A team of 19 prominent researchers has published guidelines for the responsible use of machine learning in science. They say it could avert a crisis that's smoldering in every field.

Scientists have adapted a device called a microwave circulator for use in quantum computers, allowing them for the first time to precisely tune the exact degree of nonreciprocity between a qubit, the fundamental unit of quantum computing, and a microwave-resonant cavity. The ability to precisely tune the degree of nonreciprocity is an important tool to have in quantum information processing. In doing so, the team derived a general and widely applicable theory that simplifies and expands upon older... Читать дальше...

Non-coding DNA variants contribute to acute lymphoblastic leukemia (ALL) chemotherapy resistance.

Viruses known as 'jumbo' phages are seen as a potential tool against deadly bacterial infections. But scientists must first decipher the extraordinary makeup of these mysterious viruses. Researchers have now uncovered a key piece of jumbo phage development that helps them counter bacteria.

A new study involved high-resolution scans that enabled the researchers to visualize brain connections at submillimeter spatial resolution. Together, these pathways form a 'default ascending arousal network' that sustains wakefulness in the resting, conscious human brain.

During sleep, the brain weakens the new connections between neurons that had been forged while awake -- but only during the first half of a night's sleep, according to a new study.

Reaching net-zero carbon emissions goals requires finding transformative paths to manage carbon in difficult-to-electrify economic sectors.

The brain can direct the immune system to an unexpected degree, capable of detecting, ramping up and tamping down inflammation, shows a new study in mice.

Researchers have discovered a potential 'cosmic glitch' in the universe's gravity, explaining its strange behavior on a cosmic scale.

Scientists are harnessing cells to make new types of materials that can grow, repair themselves and even respond to their environment. These solid 'engineered living materials' are made by embedding cells in an inanimate matrix that's formed in a desired shape. Now, researchers have 3D printed a bioink containing plant cells that were then genetically modified, producing programmable materials. Applications could someday include biomanufacturing and sustainable construction.

An international collaborative research team has discovered that G-quadraplex DNA (G4-DNA) accumulates in neurons and dynamically controls the activation and repression of genes underlying long-term memory formation.

There's a large and growing body of evidence pointing to potentially negative impacts of social media on mental health, from its addictive nature to disruptions in sleep patterns to effects on body image. Now, a new study has found that young women who took a social media break for as little as one week had a significant boost in self-esteem and body image -- particularly those most vulnerable to thin-ideal internalization.

Using multiple nicotine products can be associated with higher levels of nicotine dependence among youth and increased mortality in adults, compared with the use of one product alone. Researchers have now uncovered factors that contribute to adolescents using multiple nicotine products. These findings, they say, will help inform efforts to prevent escalation from single to multiple product use.

Human embryo compaction, an essential step in the first days of an embryo's development, is driven by the contractility of its cells. These results contradict the presupposed driving role of cell adhesion in this phenomenon and pave the way for improved assisted reproductive technology (ART).

An mRNA cancer vaccine quickly reprogrammed the immune system to attack the most aggressive type of brain tumor in a first-ever human clinical trial.

Researchers changed the composition of the gut microbiota in male mice through common antibiotics, inducing a condition called dysbiosis, and found that: - Mouse pups sired by a dysbiotic father show significantly lower birth weight, and have increased risk of growth disorders and postnatal mortality.

Researchers have identified a causal genetic variant strongly associated with childhood obesity. The study provides new insight into the importance of the hypothalamus of the brain and its role in common childhood obesity and the target gene may serve as a druggable target for future therapeutic interventions.

The team discovered that an essential nutrient called choline is transported into the brain, across the blood-brain barrier, by a protein transporter called FLVCR2. This is discovery will inform future design of drugs for diseases such as Alzheimer's and stroke, mimicking choline so they can be smuggled into the brain.

The mysteries of how memory works are explained in a new book that suggests anyone can boost their powers of recall -- and that losing your keys is normal.

Working with teens, researchers designed RESeT: a snowy virtual world with six activities intended to improve mood. In a 3-week study of 44 teens, researchers found that most of the teens used the technology about twice a week without being prompted and reported lower stress levels after using the environment.

Researchers have found that cells inside clogged arteries have cancer-like properties that aggravate atherosclerosis, and anticancer drugs could be a new treatment.

Scientists have discovered that calcium plays a significant role in enhancing the resistance of potato plants to bacterial wilt.

A research team using the ChemCam instrument onboard NASA's Curiosity rover discovered higher-than-usual amounts of manganese in lakebed rocks within Gale Crater on Mars, which indicates that the sediments were formed in a river, delta, or near the shoreline of an ancient lake.

Women are 40% more likely to experience depression in the perimenopause than those who aren't experiencing any menopausal symptoms, finds a new study.