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Апрель
2024

Новости за 11.04.2024

Phys.org 

Innovation linked to international exports for both rural and urban firms

A new study led by Penn State researchers finds that U.S. firms actively engaged in creating innovative products or processes are more likely to expand into international markets. The findings, which apply to both rural and urban companies, could inform efforts to boost U.S. exports.

Phys.org 

'Branded access offers' dilute parent brand via perceived lack of consumer commitment: Study

Why buy when you can rent? From cars to high-end clothing, the short-term renting or sharing of consumer goods through "branded access offers" has become an increasingly popular alternative to the traditional ownership model. But such time-limited consumption may have unintended consequences for the parent brands that offer them, according to a new study co-written by a University of Illinois Urbana-Champaign expert in consumer-brand relationships.

Phys.org 

Examining the blowtorch effect of satellite reentry through video

A reaction wheel—one of the heaviest parts of a space mission, its changing rotation used to shift a satellite's orientation—seen in a plasma wind tunnel belonging to the High Enthalpy Flow Diagnostics Group (HEFDiG) at the University of Stuttgart Institute of Space Systems (IRS). Arc-heated gas in the test chamber reaches speeds of several kilometers per second, reproducing reentry conditions, while the reaction wheel itself is being rotated, reproducing the tumbling that takes place as a satellite plunges through the atmosphere.

Phys.org 

Economist: Tens of billions of dollars in forest products are being overlooked

In the Roman Empire, custom taxes on spices, black pepper in particular, accounted for up to a third of the empire's annual income. During the late Middle Ages, European efforts to cut out middlemen and monopolize the spice trade led to colonization in Asia. Historically, non-timber forest products have frequently played a key role in the global economy.

Phys.org 

New study finds potential targets at chromosome ends for degenerative disease prevention

We depend on our cells being able to divide and multiply, whether it's to replace sunburnt skin or replenish our blood supply and recover from injury. Chromosomes, which carry all of our genetic instructions, must be copied in a complete way during cell division. Telomeres, which cap the ends of chromosomes, play a critical role in this cell-renewal process—with a direct bearing on health and disease.

Phys.org 

Scientists discover first nitrogen-fixing organelle

Modern biology textbooks assert that only bacteria can take nitrogen from the atmosphere and convert it into a form that is usable for life. Plants that fix nitrogen, such as legumes, do so by harboring symbiotic bacteria in root nodules. But a recent discovery upends that rule.

Phys.org 

New study reveals novel approach for combating 'resting' bacteria

Most disease-causing bacteria are known for their speed: In mere minutes, they can double their population, quickly making a person sick. But just as dangerous as this rapid growth can be a bacterium's resting state, which helps the pathogen evade antibiotics and contributes to severe chronic infections in the lungs and blood, within wounds, and on the surfaces of medical devices.

Phys.org 

Researchers map 33 new big game migrations across American West

A new set of maps that document the movements of ungulates was published today in the fourth volume of the Ungulate Migrations of the Western United States. The maps in this collaborative U.S. Geological Survey report series reveal the migration routes and critical ranges used by ungulates, or hooved mammals, in the western U.S., furthering scientists' understanding of the geography of big game migrations.

Phys.org 

A compact metasurface array-based system for single-shot spectroscopic ellipsometry measurement

Spectroscopic ellipsometry is widely adopted in semiconductor processing, such as in the manufacturing of integrated circuits, flat display panels, and solar cells. However, a conventional spectroscopic ellipsometer, as shown in Fig.1a, typically modulates the polarization state via mechanical rotation of the compensator or analyzer. For spectral detection, it either requires wavelength scanning or the use of a multi-channel spectrometer. The resulting system is often bulky, complex, and require multiple measurements.

Phys.org 

How hybrid work is reinventing management

When it arrived en masse for the COVID pandemic, remote working was hailed as an arrangement that boosted work-life balance and slashed commuter-related misery and pollution. But it would appear its golden days are over.

Phys.org 

Research finds dairy farmers receptive to methane-reducing seaweed feed

New England's dairy industry continues to evolve in response to significant market challenges that include a decreased demand for milk and higher production and land costs. However, there is also ongoing evidence that organic dairy farming can provide environmental benefits—such as reducing methane emissions—which could further differentiate their products as well as help qualify farms for new government initiatives to reduce methane through innovative management practices.

Phys.org 

NASA technology helps guard against lunar dust

Defeating dust may be a small concern for most people on Earth, but for astronauts and spacecraft destined for the moon or Mars, it is a significant hazard that must be mitigated. That's why researchers at NASA's Kennedy Space Center in Florida are seeking innovative ways to use Electrodynamic Dust Shield (EDS) technology.

Phys.org 

Genetic underpinnings of environmental stress identified in model plant

Plants can be temperamental. Even weeds along the side of highways or pushing their way up in the cracks of concrete sidewalks can get stressed out by dehydration, cold, excess salt and more. Researchers at Hiroshima University have identified 14 genes that thale cress—a plant commonly used in genetic investigations since its genome is well documented—express more when responding to five specific stressors, as well as eight genes that the plant suppresses.

Phys.org 

Ant pheromones may help protect hikers and campers from ticks

If you're outside enjoying the spring sunshine, then chances are, ticks are too. However, new research from Simon Fraser University (SFU) suggests the use of ant pheromones as a topical repellent, or as an environmental barrier, may help protect hikers and campers from the harmful bites of black-legged ticks, which could carry Lyme disease.

Phys.org 

Trapped in the middle: Billiards with memory framework leads to mathematical questions

Adding one simple rule to an idealized game of billiards leads to a wealth of intriguing mathematical questions, as well as applications in the physics of living organisms. This week, researchers from the University of Amsterdam, including two masters' students as first authors—have published a paper in Physical Review Letters about the fascinating dynamics of billiards with memory.


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Всем, как в Москве: жителей регионов предложили уравнять в правах на получение компенсации за ЖКУ

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Музыкальные новости

Аналитики оценили изменение высоты новостроек в городах России за 5 лет

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Новости России

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Экология в России и мире

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Участники Всероссийской олимпиады школьников по математике выбрали Marins Park Hotel Нижний Новгород

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Показ Academy Kaurtseva Fashion Day III 24

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Медведев рассказал, как ударился головой перед матчем с Уиллисом на Уимблдоне в 2016 году

Теннисист Медведев может потерять свое место в рейтинге ATP

Moscow.media

Патриотическую акцию «Синий платочек» провели в Нижнем Новгороде в день прибытия «Поезда Победы»

В Подмосковье росгвардейцы почтили память Героев Великой Отечественной войны и возложили цветы к мемориальным комплексам региона.

OpenAI готовит конкурента поисковику Google, но на базе ИИ

«Биржа грузоперевозок ATI.SU» запустила сервис «Выгодные направления»







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