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Stanford scientists study Pavlovian conditioning in neural networks
Stanford scientists Pavlovian conditioning neural networks
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2017/3/30
In the decades following the work by physiologist Ivan Pavlov and his famous salivating dogs, scientists have discovered how molecules and cells in the brain learn to associate two stimuli, like Pavlo...
Researchers create 'time crystals' envisioned by Princeton scientists（图）
Researchers time crystals Princeton scientists
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2017/3/30
Time crystals may sound like something from science fiction, having more to do with time travel or Dr. Who. These strange materials — in which atoms and molecules are arranged across space and time — ...
UCLA scientists show how to amplify or stifle signals for immune responses
UCLA scientists amplify stifle signals immune responses
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2017/3/30
T cells, the managers of our immune systems, spend their days shaking hands with another type of cell that presents small pieces of protein from pathogens or cancerous cells to the T cell. But each T ...
NSF-supported scientists present research results on ecosystem change
NSF scientists present research results ecosystem change
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2017/3/14
On March 21, scientists from across the National Science Foundation's (NSF) Long-Term Ecological Research (LTER) Network will take part in an annual mini-symposium, presenting results on how ecosystem...
Scientists Use Big-Brother Technology to Spy on Bumblebees
Scientists Big-Brother Technology Spy on Bumblebees
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2017/3/14
By tagging individual bumblebees with microchips, biologists have gained insights into the daily life of a colony of bumblebees (Bombus impatiens) in unprecedented detail. The team found that while mo...
Scientists make huge dataset of nearby stars available to public
Scientists huge dataset nearby stars available public
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2017/3/13
The search for planets beyond our solar system is about to gain some new recruits.Today, a team that includes MIT and is led by the Carnegie Institution for Science has released the largest collection...
Scientists discover new helium chemistry（图）
Scientists new helium chemistry
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2017/2/16
Although helium is the second most-abundant element (after hydrogen) in the universe, it doesn’t play well with others. It is a member of a family of seven elements called the noble gases, which are c...
Scientists present El Nino,other long-term ecological research results at annual aquatic sciences meeting
Scientists present El Nino other long-term ecological research results annual aquatic sciences meeting
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2017/2/16
The ecological effects of the strong 2015-2016 El Niño. Carbon burial in aquatic ecosystems. The presence of pharmaceuticals in streams.These are just a few of the topics scientists affiliated wi...
Large marine protected areas effectively protect reef shark populations,Stanford scientists find
Large marine protected areas reef shark populations Stanford scientists
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2017/2/16
Originating 423 million years ago, sharks are a group of predators that span 490 species and still play crucial roles within their ecosystems. We often characterize these top predators as nearly indes...
Scientists develop genetic path to tastier tomatoes
Scientists genetic path tastier tomatoes
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2017/2/16
Some consumers crave tastier tomatoes than those available at the supermarket. Now, scientists at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and their partners hav...
Scientists Discover a Way to Sequence DNA of Rare Animals
Scientists Sequence DNA Rare Animals
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2017/2/16
Rare and extinct animals are preserved in jars of alcohol in natural history museum collections around the world, which provide a wealth of information on the changing biodiversity of the planet. Thes...
Scientists discover large extinct otter（图）
Scientists large extinct otter
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2017/2/16
Dr. Xiaoming Wang, Curator and Head of Vertebrate Palaeontology at the Natural History Museum of Los Angeles County, and Dr. Denise Su, Curator & Head of Paleobotany and Paleoecology at the Cleveland ...
TSRI Scientists Create First Stable Semisynthetic Organism
TSRI Scientists First Stable Semisynthetic Organism
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2017/2/16
Life’s genetic code has only ever contained four natural bases. These bases pair up to form two “base pairs”—the rungs of the DNA ladder—and they have simply been rearranged to create bacteria and but...
Green Sahara's Ancient Rainfall Regime Revealed by Scientists
Green Sahara Ancient Rainfall Regime Scientists
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2017/2/16
Rainfall patterns in the Sahara during the 6,000-year "Green Sahara" period have been pinpointed by analyzing marine sediments, according to new research led by a UA geoscientist.What is now the Sahar...
Atmospheric scientists take to the skies to test cloud seeding for snow
Atmospheric scientists the skies test cloud seeding snow
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2017/2/16
Can cloud seeding -- dispersing particles into the air with the aim of increasing precipitation -- increase snowfall? This week, a team of researchers began a cloud-seeding project in southwestern Ida...