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Phys.org · 实时热榜

HISTORY2026年7月23日108 不同热搜
07/2308/21 有历史数据
DAILY UNIQUE TOPICS108 个热搜
  1. 01
    Even a slight overproduction of tubulin can tip the balance of cellular health, study shows

    For cells to function properly, they must produce the right amount of each protein. It is a delicate balance: Both too little and too much can compromise essential cellular functions. A team from the University of Geneva (UNIGE) has now shown that even a modest excess of tubulin—the protein that assembles into microtubules, the cell's internal scaffolding—is enough to disrupt tissue architecture and reduce cell viability. Published in Nature Communications, the study demonstrates that the quanti

    最高第 105:46 达到05:46 首次观测上榜22:46 观测离榜累计约17小时
  2. 02
    Neural networks unlock larger quantum simulations with lower computational costs

    In recent years, research using artificial intelligence to predict material properties has advanced rapidly. Neural network quantum Monte Carlo methods have attracted attention as highly accurate simulation techniques. However, their extremely high computational cost has limited their application to small molecular systems. This study introduces a new computational method that overcomes this limitation.

    最高第 104:46 达到04:46 首次观测上榜21:46 观测离榜累计约17小时
  3. 03
    Shifting weather patterns drive 55% of Europe's summer drought trend, study finds

    In a new study, researchers at Leipzig University have identified a major cause of the unusually severe summer soil drying and rising temperatures across Europe. They found that much of the trend can be attributed to changes in atmospheric circulation patterns—that is, shifts in the weather regimes that typically occur over Europe. These changes account for around 55% of the observed summer drought trend. Specifically, more frequent and persistent high-pressure systems have brought drier conditi

    最高第 105:16 达到05:16 首次观测上榜22:16 观测离榜累计约17小时
  4. 04
    Detecting the body's magnetic fields with a low-power Ramsey-based magnetometer

    Our bodies generate extremely weak magnetic fields as electric currents flow through the heart, brain and other tissues. These signals are used in magnetocardiography and magnetoencephalography to assess heart function and brain activity, respectively. These fields can be detected at room temperature using diamond sensors containing nitrogen-vacancy (NV) centers, in which a carbon atom is replaced by a nitrogen atom adjacent to an empty lattice site.

    最高第 204:46 达到04:46 首次观测上榜21:16 观测离榜累计约16小时30分
  5. 05
    Reusable magnetic invention removes microplastics plus some PFAS from water

    Microplastics are an increasing global concern, with growing evidence of their presence in water systems. RMIT University researchers have developed a water treatment material that rapidly removes micro- and nanoplastics and some PFAS (per- and polyfluoroalkyl substances), bringing the technology closer to real-world use. The invention builds on the team's 2022 breakthrough in microplastics removal, extending its performance to much smaller particles and more complex wastewater.

    最高第 205:46 达到05:46 首次观测上榜22:16 观测离榜累计约16小时30分
  6. 06
    Water-surface vortices drive tiny rotors without electricity, magnets or chemicals

    Reliably generating controlled miniature rotations has long been a challenge: Chemical propulsion systems wear out, and methods that use electric or magnetic fields require complex setups. A team from KIT's Institute of Microstructure Technology (IMT) and the Suzhou Institute of Nano-tech and Nano-bionics (SINANO) at the Chinese Academy of Sciences has now demonstrated that flow at a water surface alone is sufficient to rotate a floating object in a fixed direction. Their research is published i

    最高第 106:16 达到06:16 首次观测上榜22:46 观测离榜累计约16小时30分
  7. 07
    Plasma design rules show how to preserve attosecond flashes for observing electrons

    Researchers at Skoltech, together with a colleague from the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences, working within the joint SIOM–Skoltech laboratory, have determined how to select the thickness and density of a plasma target so that a pulse passing through it retains its attosecond duration and high intensity. The results will help improve the design of plasma-based sources of ultraviolet and X-ray radiation used to study ultrafast processes in matter

    最高第 205:16 达到05:16 首次观测上榜21:46 观测离榜累计约16小时30分
  8. 08
    Q&A: Listening with light—an innovative new technology for studying the seafloor

    The seafloor plays an important ecological and societal role. Understanding the processes that shape this environment will help guide conservation policy and decision-making about underwater infrastructure and geohazards.

    最高第 203:46 达到03:46 首次观测上榜19:46 观测离榜累计约16小时
  9. 09
    CRISPR-Cas coordinates a layered bacterial defense network in innate immunity

    All cellular life—from humans to bacteria—possesses two layers of immunity: innate and adaptive. Scientists have long understood how these two types of immunity work together in higher organisms but not in the microbial world.

    最高第 103:46 达到03:46 首次观测上榜19:46 观测离榜累计约16小时
  10. 10
    Genome tool places large genetic sequences precisely in rice and tobacco without DNA breaks

    Researchers at King Abdullah University of Science and Technology (KAUST) have developed a new way to add large pieces of genetic information to plants, overcoming a challenge that has limited plant biotechnology for decades. The advance could help scientists build more complex traits into plants in the future, supporting research into areas such as crop resilience, sustainable agriculture, biotechnology and the use of plants as scalable platforms for producing therapeutics and biologics.

    最高第 107:46 达到07:46 首次观测上榜23:46 观测离榜累计约16小时
  11. 11
    Why river management is so crucial to protecting one of world's most important wetlands

    A major new study led by Swansea University has shown that upstream river management, rather than local rainfall, is the primary driver of one of the world's most important wetlands. According to the research published in Scientific Reports, which analyzed more than two decades of satellite observations, the future of Iraq's Mesopotamian Marshes depends far more on the water flowing from the Tigris and Euphrates rivers than on rainfall.

    最高第 104:16 达到04:16 首次观测上榜20:16 观测离榜累计约16小时
  12. 12
    Light-driven chemistry method could create antiviral compound libraries 10 to 100 times larger within weeks

    As the world faces new and often untreatable viral threats, Simon Fraser University researchers have found a way to cut years off the time it takes to discover antiviral drugs. The new research enables scientists to quickly create large libraries of nucleoside analogs (NAs), compounds that mimic the building blocks of DNA and RNA and are widely used to treat cancer and viral infections such as HIV and hepatitis.

    最高第 206:46 达到06:46 首次观测上榜22:46 观测离榜累计约16小时
  13. 13
    Quantum internet leaves the lab with first real-world entanglement over busy telecom fiber

    Quantum information is notoriously fragile. Internet traffic is anything but. Yet Northwestern University scientists have demonstrated they can peacefully coexist inside the same fiber-optic cable.

    最高第 106:46 达到06:46 首次观测上榜22:46 观测离榜累计约16小时
  14. 14
    AI and quantum chemistry combine to identify efficient blue OLED materials

    Organic light-emitting diodes (OLEDs) have become a standard in modern devices with incredible contrast and sleek designs. While initially an expensive luxury, OLEDs are gradually becoming more financially accessible as the technology improves. Now, researchers at the Institute of Transformative Bio-Molecules (WPI-ITbM) at Nagoya University and the Institute for Advanced Study at Kyushu University have combined quantum chemistry with machine learning to identify new materials for blue OLEDs for

    最高第 404:46 达到04:46 首次观测上榜20:46 观测离榜累计约16小时
  15. 15
    Crowd reactions influence whether people receive controversial political messages positively or negatively

    Positive crowd reactions like applause and laughter can make controversial political messages more acceptable to viewers, according to new research by psychologist Dr. Carl Senior at Aston University. The research suggests that how broadcasters and content creators use applause, laughter and booing can subtly shape public perceptions of populist figures and divisive issues like immigration.

    最高第 304:46 达到04:46 首次观测上榜20:46 观测离榜累计约16小时
  16. 16
    Marine animals first colonized empty seashells about 470 million years ago

    An international study led by researchers from the University of Tartu shows that approximately 470 million years ago, a significant ecological change took place in the world's oceans: For the first time, the interiors of empty mollusk shells began to be used as habitats. This marked the emergence of a new ecological niche and was a crucial step in the development of a marine ecosystem similar to today's.

    最高第 107:16 达到07:16 首次观测上榜23:16 观测离榜累计约16小时
  17. 17
    Creating the largest-ever database on floating ocean plastic using smart cameras

    The first five years (2019–2024) of operations of The Ocean Cleanup's Automated Debris Imaging System (ADIS) have been reviewed, and the findings have been published in Environmental Research Communications. In addition to reviewing the technology's performance, the study covers the initial 14,500 km2 of global ocean surface scanned for plastic debris and the more than 20,000 large floating objects it helped identify.

    最高第 204:16 达到04:16 首次观测上榜19:46 观测离榜累计约15小时30分
  18. 18
    A longer, hotter reality surrounds marine heat waves, research reveals

    Anyone who has boiled a pot of water understands that it takes both time and energy to raise the temperature, so it may come as a surprise to learn that scientists have long treated marine heat waves (MHWs) as isolated events. New research led by William & Mary's VIMS & Batten School is challenging that narrative by providing a framework to characterize an ecosystem's cumulative heat exposure from MHWs and the extended periods of warm water that precede and follow them.

    最高第 207:46 达到07:46 首次观测上榜23:16 观测离榜累计约15小时30分
  19. 19
    First ever reported cryo-EM visualization of E. coli TGT structure

    The enzyme tRNA-guanine transglycosylase (TGT) chemically modifies transfer RNA (tRNA) and plays a key role in how disease-causing bacteria control the production of proteins needed to cause infection. E. coli TGT is nearly identical to the one found in Shigella, which causes the intestinal infection shigellosis. Traditionally, scientists have used E. coli TGT as a primary model to understand how TGT works; however, they have struggled to visualize the atomic structure of E. coli TGT because the

    最高第 303:46 达到03:46 首次观测上榜19:16 观测离榜累计约15小时30分
  20. 20
    Extreme heat wave grips Tunisia as wide power cuts fuel frustration

    In Tunisia, long power outages across the country have added to the strain of an intense heat wave, with temperatures as high as 49°C (120°F), leaving many fearing for their livelihoods.

    最高第 108:46 达到08:46 首次观测上榜23:46 观测离榜累计约15小时
  21. 21
    Are penalties in the US airline industry a deterrent or a 'price?'

    Many people drive more carefully for a while after receiving a traffic fine. But do large corporations, such as airlines, also change their behavior when they face financial penalties? We examine this question by studying penalties imposed in the United States for lengthy tarmac delays.

    最高第 403:46 达到03:46 首次观测上榜18:46 观测离榜累计约15小时
  22. 22
    Molecular model for semiconductor surfaces developed

    Semiconductor surfaces can generally be studied only with considerable experimental effort, for example, in an ultrahigh vacuum. To more easily gain new insights into their properties and the possibilities for targeted modification, scientists at Heidelberg University have developed a molecular model for the so-called "buckled dimer" using synthetic and computational chemistry methods.

    最高第 203:16 达到03:16 首次观测上榜17:16 观测离榜累计约14小时
  23. 23
    Physics-based AI could boost biomedical imaging and autonomous vehicle sensors

    A research team led by UCLA and the University of Rochester has demonstrated a promising evolution of an imaging system designed to capture details within "complex media," which scatter light, from depicting structures inside body tissue to seeing obstacles through heavy fog. The system uses physics-based machine learning to improve an existing imaging technique.

    最高第 103:16 达到03:16 首次观测上榜17:16 观测离榜累计约14小时
  24. 24
    More connections can deepen polarization when social ties remain weak

    Social networks, intended to bring people together, can actually increase polarization, new research finds, because while the links in the network may be plentiful, they're probably weak. A research team including Cornell sociologist Michael Macy has found that while the growing number of international contacts enabled by modern communications technologies may indeed contribute to greater polarization, as shown in previous studies, the underlying mechanism does not necessarily depend on an incre

    最高第 303:16 达到03:16 首次观测上榜17:16 观测离榜累计约14小时
  25. 25
    Chemists develop a molecular platform for the selective control of oxygen reaction pathways

    Controlling how oxygen reacts is important for improving technologies such as batteries, fuel cells and environmentally sustainable chemical processes. A research team led by professor Seung Jun Hwang from KAIST's Department of Chemistry has developed a molecular system capable of directing oxygen activation along a selected electron-transfer pathway.

    最高第 102:46 达到02:46 首次观测上榜16:46 观测离榜累计约14小时
  26. 26
    France recorded 5,700 more deaths than usual during its historic June heat wave

    France recorded at least 5,700 more deaths than usual during a historic heat wave last month, the public health agency said Wednesday, sharply increasing its estimates of the feared toll from record-shattering temperatures.

    最高第 202:46 达到02:46 首次观测上榜16:46 观测离榜累计约14小时
  27. 27
    New optical method follows single proteins as they shift shape

    Researchers at the University of Twente have developed an optical method that follows the shape changes of a single protein in liquid without attaching anything to it. It reads the protein's structure from its own molecular vibrations, free from the labels or tags that other techniques rely on. The method could help researchers study how proteins respond to drugs, toxins and other biomolecules. The paper is published in the journal ACS Nano.

    最高第 503:46 达到03:46 首次观测上榜17:16 观测离榜累计约13小时30分
  28. 28
    Millennial minimalism: Living in a less material world

    Consumer behavior accounts for almost two-thirds of global greenhouse gas emissions. Research published in the International Journal of Business Excellence argues that reducing absolute consumption, rather than simply making it greener, needs to be a priority in environmental policy.

    最高第 110:16 达到10:16 首次观测上榜23:46 观测离榜累计约13小时30分
  29. 29
    Study of incarcerated women in Chile finds different outcomes after release

    A new study of incarcerated women in Chile reveals that women respond to imprisonment in very different ways: While most experienced little change in their involvement in crime after release, those with higher levels of past criminal involvement transitioned toward less offending. Access to employment or training played a role in their lower levels of offending following release.

    最高第 111:46 达到11:46 首次观测上榜23:46 观测离榜累计约12小时
  30. 30
    Orcas filmed ramming one of the world's heaviest fish so hard it explodes, possibly for fun

    Orcas are known to be smart and ruthless hunters. They've been observed hunting a variety of prey, with some species, such as whales, larger than themselves. They use a wide range of strategies to hunt and kill prey, but now, in the Gulf of California, researchers have observed one that hasn't been described before.

    最高第 112:16 达到12:16 首次观测上榜当日结束时仍在榜累计约11小时30分
  31. 31
    Dating apps like Tinder affect relationships and the economics of desire

    In recent years, it has become commonplace to see people selecting potential partners with the same gestures (and enthusiasm) they use to scroll through videos on TikTok or browse products in an online store. Swipe right for interest; swipe left to move on. What once involved the drama of meeting someone—glances, hesitation, approaching, rejection, discovery—has been compressed into almost "gamified" interfaces. Dating apps have expanded the possibilities for meeting people, but research in soci

    最高第 302:46 达到02:46 首次观测上榜12:16 观测离榜累计约9小时30分
  32. 32
    Spread of invasive malaria mosquito from Asia to Africa traced in new genomic study

    A genomic surveillance study has shed new light on how an invasive urban malaria mosquito species spread from Asia to Africa, potentially threatening public health across a rapidly urbanizing continent where malaria is mainly concentrated in rural areas.

    最高第 402:46 达到02:46 首次观测上榜11:46 观测离榜累计约9小时
  33. 33
    Antibiotic-tolerant bacteria rely on a hidden RNA-based survival strategy

    Antibiotics are a medical marvel, but many microbes are gaining the ability to resist and tolerate these therapeutics. St. Jude Children's Research Hospital scientists have uncovered how S. pneumoniae adapts to antibiotic exposure and immune pressures. Their findings reveal that changes in RNA regulation enable bacteria to enter a state of antibiotic tolerance. The results provide a deeper understanding of how pathogens survive treatment and could inform strategies to improve the effectiveness o

    最高第 102:16 达到02:16 首次观测上榜10:16 观测离榜累计约8小时
  34. 34
    Florida researchers bring endangered elkhorn coral ashore to protect them

    Scientists working to save a coral species from extinction transported 30 pieces from nurseries off the Florida coast to a hatchery on land Wednesday, fearing that warming waters could trigger a mass bleaching event this summer that could wipe them out.

    最高第 216:46 达到16:46 首次观测上榜当日结束时仍在榜累计约7小时
  35. 35
    June heat wave cost UK economy more than £1bn: Study

    Britain's record-breaking June heat wave resulted in some 24 million lost hours of work, costing the economy £1.15 billion ($1.5 billion), according to an estimate released Thursday by the London School of Economics (LSE).

    最高第 116:46 达到16:46 首次观测上榜当日结束时仍在榜累计约7小时
  36. 36
    Striped or checkered? Magnetic field influences competing electronic patterns in a graphene-like quantum material

    In most everyday materials, such as copper, silver and silicon, the behavior of electrons is relatively predictable. In quantum materials, however, electrons can interact in complex ways, giving rise to collective electronic states with remarkable properties. Understanding how these states emerge—and, ultimately, how to control them—is one of the central challenges in quantum materials research.

    最高第 217:16 达到17:16 首次观测上榜当日结束时仍在榜累计约6小时30分
  37. 37
    National food waste recycling promises major climate gains but comes with microplastic risks

    Keeping food waste out of landfills provides climate and other environmental benefits, and Vermont requires residents to divert these materials to better management pathways. With other states considering similar policies, UVM researchers studied the potential outcomes of bringing these efforts to a national scale.

    最高第 317:16 达到17:16 首次观测上榜当日结束时仍在榜累计约6小时30分
  38. 38
    In Ghana, one man's race to save critically endangered fish

    As dawn breaks over Ghana's Atlantic coast, artisanal fishing boats return to shore with last night's catch—baskets of snapper, crabs, rays and a distinct-looking fish locals call "esene."

    最高第 417:16 达到17:16 首次观测上榜当日结束时仍在榜累计约6小时30分
  39. 39
    Climate change making Europe drought 'more severe': study

    Human-caused climate change has intensified a drought across Europe, with extreme heat rather than low rainfall driving the exceptionally dry conditions, a team of international scientists said Thursday.

    最高第 117:16 达到17:16 首次观测上榜当日结束时仍在榜累计约6小时30分
  40. 40
    New genetic approaches raise hopes for restoring the American chestnut to its former glory

    The American chestnut tree was a dominant and iconic species in many Appalachian forests until it was devastated by an introduced fungus from Asia called chestnut blight.

    最高第 202:16 达到02:16 首次观测上榜08:46 观测离榜累计约6小时30分
  41. 41
    Carbon footprint of metal production could be more than 10 times higher than estimated

    New research from the University of St Andrews has found that metal production carbon footprints could be more than 10 times higher than previously estimated, with serious implications for the ambition to reach net zero.

    最高第 101:46 达到01:46 首次观测上榜07:46 观测离榜累计约6小时
  42. 42
    Rescuing satellites is harder than it looks. A growing space junk problem will make doing so more important

    A commercial robotic spacecraft called LINK launched on an emergency mission to save NASA's Neil Gehrels Swift Observatory, which has been slowly falling toward Earth, on July 3, 2026. Over the coming weeks, LINK, built by Katalyst Space Technologies, will try to grasp the telescope, then spend months raising it to a safer orbit.

    最高第 201:46 达到01:46 首次观测上榜07:46 观测离榜累计约6小时
  43. 43
    Storms that built a graveyard: Ancient monsoons created a spectacular dinosaur fossil site

    Around 80 million years ago, a stretch of tropical coastline in what is now northeastern Italy was lashed by monsoon rains and tropical cyclones. Those storms swept dinosaur carcasses, crocodiles, plants and river mud onto a tidal flat, where the tides and a film of microbes sealed everything away with extraordinary preservation.

    最高第 301:46 达到01:46 首次观测上榜07:16 观测离榜累计约5小时30分
  44. 44
    Portugal's ancient giant bears shrank over thousands of years and humans may be to blame

    About 22,000 years ago, a giant brown bear lumbered across what is now Portugal. The creature weighed around 385 kg (about 850 pounds), making it one of the largest of its kind ever found, dwarfing even the largest brown bears today.

    最高第 118:46 达到18:46 首次观测上榜当日结束时仍在榜累计约5小时
  45. 45
    EU watchdog reduces safe level of exposure to 'forever chemical' TFA

    The EU's food safety agency said Wednesday it has dramatically reduced the acceptable daily intake level of the so-called forever chemical TFA, following new evidence of its effect on a key hormone that regulates the body's metabolism.

    最高第 101:16 达到01:16 首次观测上榜06:16 观测离榜累计约5小时
  46. 46
    Soft plastic recycling laws have been delayed. An expert explains why

    Mandatory curbside collection of soft plastic (chip bags, bread bags, plastic wrap) has just been pushed back from 2027 to 2030.

    最高第 401:46 达到01:46 首次观测上榜06:46 观测离榜累计约5小时
  47. 47
    Greece broils on year's warmest day as three-day heat wave peaks

    Greece is expected to experience its hottest day of the year Wednesday, with temperatures reaching up to 43°C (109°F), according to meteorologists. Several regions have been placed on alert because of the risk of wildfires.

    最高第 501:46 达到01:46 首次观测上榜06:46 观测离榜累计约5小时
  48. 48
    Study spotlights human toll of abrupt U.S. foreign aid cuts

    In January 2025, the Trump administration announced a 90-day freeze on all United States government (USG) foreign aid, which subsequently became a permanent shutdown of USAID in July 2025. New research finds that the abrupt cessation of foreign aid disrupted health and humanitarian systems worldwide, with disproportionate impacts on women, girls and other marginalized populations.

    最高第 119:16 达到19:16 首次观测上榜当日结束时仍在榜累计约4小时30分
  49. 49
    Engineered enzyme erases a stubborn mark of aging by up to 70% in human tissue samples

    A biotech company called Revel Pharmaceuticals is looking into ways to reverse aging, and the company's science team, along with researchers from the company Calico and the University of Colorado, may be a step closer to realizing the so-called fountain of youth. The team recently published their study in Nature Communications detailing how they engineered an enzyme capable of reversing a particular form of age-related damage and demonstrated its competence with test results.

    最高第 100:46 达到00:46 首次观测上榜05:16 观测离榜累计约4小时30分
  50. 50
    The violence link: Animal maltreatment and family violence often happen together

    For some survivors of intimate partner violence, leaving an abusive relationship might mean facing a difficult choice between prioritizing their own safety and that of a beloved pet.

    最高第 301:16 达到01:16 首次观测上榜05:46 观测离榜累计约4小时30分