搜索结果: 1-15 共查到“国际动态 shape”相关记录30条 . 查询时间(0.093 秒)
If we could rewind the tape of species evolution around the world and play it forward over hundreds of millions of years to the present day, we would see biodiversity clustering around regions of tect...
Shape-memory metals, which can revert from one shape to a different one simply by being warmed or otherwise triggered, have been useful in a variety of applications, as actuators that can control the ...
Receptors found on cell surfaces bind to hormones, proteins, and other molecules, helping cells respond to their environment. MIT chemists have now discovered how one of these receptors changes its sh...
Context matters. It’s true for many facets of life, including the tiny molecular machines that perform vital functions inside our cells.
Chemists have developed a nanomaterial they can trigger to shape-shift -- from flat sheets to tubes and back to sheets again -- in a controllable fashion. The Journal of the American Chemical Soc...
Researchers engineer tiny, shape-changing machines that deliver medicine to the GI tract（图）
engineer tiny shape-changing machines deliver medicine GI tract
2020/11/13
Inspired by a parasitic worm that digs its sharp teeth into its host's intestines, Johns Hopkins University researchers have designed tiny, star-shaped microdevices that latch onto intestina...
In an elegant choreography, plants take cues from their environment and channel them into forms: flowers, roots and branches. In a new paper published in Nature Communications, biologist Doris Wa...
Hurricanes fertilize mangrove forests, shape Florida Everglades（图）
Hurricanes mangrove forests shape Florida Everglades
2020/2/28
The destructive power of a hurricane appears to be good news for mangroves in the Florida Everglades.When Category 3 hurricanes Wilma (2005) and Irma (2017) struck Florida, mangroves took a beating, e...
Researchers learn how the cancer-causing stomach bacterium Helicobacter maintains its shape（图）
Researchers cancer-causing stomach bacterium Helicobacter
2020/2/20
NSF-funded scientists reporting in the journal eLife have revealed that they are closer to understanding a risk factor for stomach cancer: how the bacterium Helicobacter pylori...
Knowing your neighbors may shape U.S. household yard care practices（图）
neighbors household U.S. household income
2019/11/22
Neighbor peer pressure may be linked to increases in yard fertilization and irrigation across several climate regions of the U.S., according to an NSF-funded study published in the journal PLOS ONE.In...
Community impacts from extreme weather can shape climate beliefs（图）
Community impacts extreme weather shape climate beliefs
2019/10/28
Recent studies suggest that people who experience hurricanes, catastrophic flooding or other severe weather events are more likely to believe in, and be concerned about, climate change in the wake of ...
Shape of Lake Ontario generates white-out blizzards,study shows（图）
Shape of Lake Ontario generates white-out blizzards
2017/11/24
A 6-foot-wide snow blower mounted on a tractor makes a lot of sense when you live on the Tug Hill Plateau. Tug Hill, in upstate New York, is one of the snowiest places in the Eastern U.S. and experien...
Farming,Cheese,Chewing Changed Human Skull Shape（图）
Farming Cheese Chewing Human Skull Shape
2017/9/5
The advent of farming, especially dairy products, had a small but significant effect on the shape of human skulls, according to a recently published study from anthropologists at UC Davis.Put another ...
Bacteria come in all shapes and sizes — some are straight as a rod, others twist like a corkscrew. Shape plays an important role in how bacteria infiltrate and attack cells in the body.The helical sha...
Figuring Out the 3D Shape of Molecules with a Push of a Button
3D Shape a Push of a Button
2017/7/21
A team of researchers led by Carnegie Mellon University chemist Roberto R. Gil and Universidade Federal de Pernambuco chemist Armando Navarro-Vázquez has developed a program that automates the process...