space 2 1

Tag: "space" at biology news

Simulations unravel outer membrane transport mechanism

...its conformation in ways that would open up enough space for a molecule of vitamin B12 to pass through the barrel. (Click on the link below the image of the system to watch the results of the simulation.) A second simulation exerted a force near the center of gravity of the luminal domain, pulling it ou...

Envisat captures first image of Sargassum from space

Sargassum seaweed has been detected from space for the first time using optical radiance data fro... dense floating vegetation, has been detected from space for the first time thanks to an instrument aboard ESA’s environmental satellite, Envisat. The abilit...

Dirty snow may warm Arctic as much as greenhouse gases

...ming, while bright surfaces reflect heat back into space and cause cooling. “When we inject dirty particles into the atmosphere and they fall onto snow, the net effect is we warm the polar latitudes,” said Charlie Zender, associate professor of Earth system science at UCI and co-author of the study. “Da...

3-D ultrasound scanner provides in-depth view of the brain

...achines are also expensive and require a dedicated space with special surgical tools that can be used in close proximity to the imagers' powerful magnets. Last year, the Duke team, led by biomedical engineering Professor Stephen Smith, reported the development of a 3-D ultrasound device designed for ima...

Arctic ice retreating more quickly than computer models project

...gions of sea ice, which reflect sunlight back into space and provide a cooling impact, are disappearing. In contrast, darker areas of open water, which are expanding, absorb sunlight and increase temperatures. This feedback loop has played a role in the increasingly rapid loss of ice in recent years, which...

Protein enables discovery of quantum effect in photosynthesis

...ts extreme efficiency, in that vast areas of phase space can be sampled effectively to find the most efficient path for energy transfer. "We have a very detailed molecular structure of this protein and we understand the electronic properties of it very well, too," said Blankenship. "It's taught us a l...

Role of noise in neurons

...computer chips, this miniaturization economizes on space and energy, it increases the noise introduced by thermodynamic fluctuations in a neuron's voltage-gated ion channels. Axons use action potential (AP) to transmit information fast and reliably to synapses, but the reliability of transmissions down fib...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...tic instrumentation that has been flown to date in space missions, particularly the Huygens probe that land...has stimulated ideas for acoustical exploration of space (3aPAb2). Michael Yang of ATA Engineering in San Diego ( michael.yang@ata-e.com ) will discuss acou...

Spreading viruses as we breathe

...here more than 300 people were infected within the space of a few hours. "We wanted to know how this virus was able to travel from building to building in such a short time," she said. Professor Morawska said her research had shown that one person infected with the disease could easily spread the vir...

Deconstructing brain wiring, one neuron at a time

...turning it into a tool that can cross the synaptic space of a targeted nerve cell just once to identify all the neurons to which it is directly connected. "We've wanted to do this for a very long time and finally found a way to make it possible," says the study's senior author, Edward M. Callaway, Ph....

Human's ecological footprint in 2015 and Amazonia revealed

...tion, energy use, and human use of land for living space and other purposes. Population size and affluence have long been hypothesized to be primary drivers of environmental impact, however doubts over their relative impact remained due to a lack of extensive testing and contradictory arguments in regar...

Tropical forests -- Earth's air conditioner

...sunlight that would otherwise be reflected back to space by a bright white covering of snow. The work simulates the effects of large-scale deforestation, and accounts for the positive and negative climate effects of tree cover at different latitudes. The result, which appears in this week’s early online...

Bacterial walls come tumbling down

...ucking into a fold in the enzyme and taking up the space needed to bind to lipid II, the researchers believe. "We would like to see the enzyme in a complex with its natural substrates as well as with inhibitors," Lovering said. In the meantime, scientists now have the details of its shape and key contact p...

NASA predicts nongreen plants on other planets

.... "This work will help guide designs for future space telescopes that will study extrasolar planets, to ...late Earth-size planets and their light spectra as space telescopes would see them. The scientists' goal is to discover the likely range of habitable planets...

ESA launches new project to protect biodiversity

...p further in Earth observation measurements ?'from space to place'." MarViva, a non-governmental organisation working to promote a more sustainable use of coastal and marine resources in oceanic and coastal areas in Latin America and the Caribbean, will use various DIVERSITY products and services to stu...

Researcher to study astronaut bone loss for space biology agency

...oss resulting from the prolonged weightlessness of space travel. The research also has great relevance ...mechanical forces on bone in the weightlessness of space dramatically weakens bone," says Long. "The ability of humans to conduct prolonged missions to the m...

New molecular pathway could reveal how cells stick together

...MPs is to cleave other proteins that reside in the space in between cells. Page-McCaw has previously identified a specific protein, called ninjurin, that gets cut by MMP. Now she is working out the interplay between MMPs and ninjurin, with the goal of characterizing this previously unknown pathway by which...

Is there a pilot in the insect?

...space, because the phases in which an airship or a space module navigates close to the ground are absolutely crucial. The researchers and CNRS have filed an international patent for the "fly automatic pilot". ...

Study identifies risk factors for spread of respiratory infections in hospitals

...outbreak. It is very important to provide adequate space in hospital wards and implement effective infection control measures in order to avoid cross-contamination in hospitals." Unfortunately, the authors note, it is a common practice for hospitals to increase the number of hospital beds inside a ward...

Bats prey on nocturnally migrating songbirds

...lent nocturnal hunter patrolling the infinite dark space await them... ...

1 2 3 4 5 6 7