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Empty in Biological News

Crabs' memory of pain confirmed by Queen's academic

... crabs have no shell of their own so inhabit other structures, usually empty mollusc shells. Wires were attached to shells to deliver the small ... may hold on a hot plate that contains food whereas they may drop an empty plate, showing that we take into account differing motivational ...

Artificial cells, simple model for complex structure

... of atoms, sometimes branching and within their structures remains a lot of empty space. When faced with another large molecule, these macromolecules cannot occupy the same area and so they draw inward, filling some of the empty space and making themselves smaller. Compacted macromolecules act ...

A second career for a growth factor receptor: keeping nerve axons on target

... the way to build a brain. "Attraction is like finding the best seat in an empty movie theater, but repulsion is like picking the lone empty seat in a full theater." "We have shown that ephrin-A cannot transduce ...

Ceramic, heal thyself

... zirconia gives up oxygen atoms. But the loss of these oxygen atoms leaves empty oxygen sites. The remaining oxygen atoms constantly jump in and out of ... "When the teacher turns her back, the kids constantly jump into empty chairs, leaving their own chairs vacant until another kid leaps into the ...

American Chemical Society's Weekly PressPac -- March 26, 2008

... with nanonparticles to imitate a biological cell. When placed next to an empty capsule, nanoparticles from the filled capsule initiated the motion of the empty capsule, which in turn caused the movement of the filled signaling ....

Methane-eating microbes can use iron and manganese oxides to 'breathe'

... were sulfate free but contained iron oxide or manganese oxide. She placed methane gas that contained the non-radioactive carbon-13 isotope in the empty space in the flasks above the sediment and tested any resulting carbon dioxide produced by the samples. All the carbon dioxide had the carbon-13 ...

NAU discovery could help feed millions

... easy. "We want them involved with hands-on research and field experience," she said. "The first question I ask interested students is if they have empty passport pages they are ready to fill." ...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

... frequencies and listens to the sounds that bounce back. The listening device first records the profile of reflected sound coming back from an empty pipe. When the pipe is blocked, this sound profile changes. Using a signal-processing technique called matched-field processing, Tolstoy picks out ...

Deep-sea rocks point to early oxygen on Earth

... formed at the surface, the crystalline structure of the rock would have formed from small particles aggregating producing large crystals with lots of empty spaces between. Using transmission electron microscopy, the researchers did not find that crystalline structure. "We found that the hematite from ...

Fossil fragments reveal 500-million-year-old monster predator

... animals, a shell or carapace is used to protect the soft-parts of the body, as you would see in a crab or lobster, but this structure in Hurdia is empty and does not cover or protect the rest of the body. We can only guess at what its function might have been." Hurdia and Anomalocaris are ...

Defectors take the car, cooperators go by bus

... the irresponsible behavior of the majority. In contrast, if everyone uses the bus, the buses will be crowded although can move freely on otherwise empty streets. Everyone gets to their destination quickly but in less comfort and without the benefits of privacy, in-car audio, or a trunk for ...

Sweetened beverage consumption increases in the US

... 20 to 44." According to Bleich and colleagues, efforts to reduce sugar-sweetened beverage consumption may be an important strategy for reducing empty calorie intake in the adult diet in the United States. ...

CT scans reveal that dinosaurs were airheads

... the physiology of the airways. "I've been looking at sinuses for a long time, and indeed people would kid me about studying nothinglooking at the empty spaces in the skull. But what's emerged is that these air spaces have certain properties and functions," said Witmer, Chang Professor of Paleontology ...

Track your fitness, environmental impact with new cell phone applications

... where the application averages these rapid signals and translates them into, for example, a 20-minute jog or a drive to work. UbiFit displays an empty lawn at the beginning of the week, and flowers grow as the user works out during the week. Different kinds of workouts yield different colored ...

New method provides panoramic view of protein-RNA interactions in living cells

... protein is binding. When DNA is transcribed into RNA, the primary transcript is divided into many blocks called exons, which are separated by empty spaces. In order to convert the transcript into some sort of message, all the spaces need to be removed; but if an exon is dropped, a different ...

Rutgers scholar authors definitive biography of reproductive medicine pioneer

... misled the patients who participated in them. The Rock biography grew out of an earlier collaboration between Marsh and Ronner on the book, "The empty Cradle: Infertility in America from Colonial Times to the Present" (Johns Hopkins, 1996). ...

Lightweight and long-legged males go the distance for sex

... a male giant weta copulates repeatedly with his mate throughout the day, the biologists estimated how much sperm was transferred by counting the empty packets (spermatophores) piled beneath the pair. Not only do males travel more than twice as far as females but small, long-legged individuals walked ...

Like eavesdropping at a party

... C lobe, it seldom lets go, and so the local calcium dominates," says Yue. By contrast, the N lobe would rapidly let go of calcium and then be empty and available to bind calcium entering the cell from distant calcium channels, allowing reception of global calcium. Similar to the cocktail party, ...

American Chemical Society's Weekly PressPac -- July 9, 2008

... this promising anthrax decontamination agent. Bielski and Joyce documented the effectiveness of their removal method in experiments with an empty office trailer filled with air containing methyl bromide. They treated air exhausted from the trailer with a solution of sodium sulfide combined with ...

Killer whales, blind bats, discriminating dolphins, mating birds

... and his colleagues, Suzanne Page and Steve Glickman, presented adult hyenas with three objects: unfamiliar spotted hyena cubs, meaty bones, and the empty transport cage used to contain bones or cubs on other experiments. The cubs elicited more groans from more hyenas than other objects, and the groans ...

Did walking on 2 feet begin with a shuffle?

... use it efficiently, said Patricia Kramer, a UW research assistant professor of anthropology and co-author of a recent study. She believes it was an empty belly, along with a need to conserve energy, that prompted that early ancestor to shuffle. Hunger. It is always hunger, said Kramer. There is ...

Leiden scientists sequence first female DNA

... uncovered gaps. Johan den Dunnen: 'The sequencing itself took about six months. Partly since it was run as a side operation filling the empty positions on the machine while running other projects. Would such a job be done in one go, it would take just ten weeks. The cost of the project ...

Does fishing on drifting fish aggregation devices endanger the survival of tropical tuna?

... with data gathered from free-school caught individuals of these same species. A salient finding was that 74% of drifting FAD-associated skipjack had empty stomachs at the moment of capture compared with only 13% for those fished from free schools. Figures of the same order of magnitude were obtained for ...

New clues to how proteins dissolve and crystallize

... "In our NEXAFS experiment, the x-ray beam kicks the lowest-energy core electrons of the carbon on the carboxylate group up into the lowest empty antibonding molecular orbitals," Uejio explains. "The more tightly bound the cation is to the carboxylate, the more energy it takes to promote the ...

Hunger hormone: Makes food more attractive

... a hormone that triggers hunger, and is secreted by the stomach [when it is empty]. An easy analogy would be to think about when you go shopping on an empty stomach, you tend to buy more food and products higher in calories. The reason is that your brain views the food as more appealing, largely due to ...

Analysis of RNA role in spreading disease advances study of damaging plant infections

... formed by a single strand that folds back in on itself. As a result, the RNA structure has a series of loops that scientists have long assumed were empty holes with unclear roles in the RNA function. Research from several labs has recently shown that many of those loops are not holes, but are ...

Scientists test device to track medication adherence in patients with HIV/AIDS

... the alcohol to a gas that can be measured in the breath. To determine how well the byproduct could be detected, six healthy volunteers swallowed empty pills in which the capsules contained trace amounts of 2-butanol. After five to 10 minutes, the scientists could measure the volatile byproduct in ...

Researchers confirm dead zone off Texas coast since 1985

... when there is hypoxia, or oxygen-depleted water. Such low levels of oxygen are believed to be caused by pollution from farm fertilizers as they empty into rivers and eventually the Gulf, or by soil erosion or discharge from sewage treatment plants. Not all of the area from the Texas-Louisiana ...

Corporate Safe Specialists Smart Safes Capture Evidence in Robbery and Theft

... in Valdosta, Georgia as a cook took out trash after closing hours. The cook was held at gunpoint while the manager was forced to open the safe and empty its contents. The video event monitoring system captured the robber's images, which were used to positively identify the suspect at arraignment. "The ...

Recovering from a mass extinction

... work indicates that life bounced back quite quickly, but this was mostly in the form of disaster taxa (opportunistic organisms that filled the empty ecospace left behind by the extinction), such as the hardy Lystrosaurus, a barrel-chested herbivorous animal, about the size of a pig. The most ...

Too much fructose could leave dieters sugar shocked

... depending on how foods are classified. It makes sense to limit foods prepared with high fructose corn syrup and table sugar, which often contain empty calories, but fruits are an important part of a persons diet, she added. One concern I have always had with the glycemic index is the potential ...

When she's turned on, some of her genes turn off

... indicating that they had chosen the male for mating. The females were also tested with other females, with unattractive smaller males, and in empty tanks. The researchers immediately extracted RNA from the females and used gene array technology to identify genes that were being up regulated ...

Dead clams tell many tales

... agriculture that flow into the oceans. She compiled nearly 100 live-dead studies on molluscs-clams and snails-to see how well sediments containing empty shells recorded important ecological information. The studies ranged from the Gulf of Mexico and the Mediterranean Sea, to the Virgin Islands and ...

Clinical studies show REMICADE reduces incidence of bowel surgeries in ulcerative colitis patients

... sores, or ulcers, form on the surface of the intestinal lining where they bleed and produce pus and mucus. Because the inflammation makes the colon empty frequently, symptoms often lead to unwanted weight loss, blood loss and a host of secondary complications. The cause of UC is not known and there is ...

American Chemical Society's Weekly PressPac -- Sept. 19, 2007

... promise for both preventing and treating the disease, Thayer notes. In the past five years or so, the TB drug pipeline has shifted from nearly empty to having about 30 compounds under investigation; several are in early clinical testing, Thayer writes. ARTICLE #5 EMBARGOED FOR 9 A.M., EASTERN ...

Truly sick or simply scared?

... or saliva for exposure to nerve agents. Lin achieves this by removing the iron from a nanoparticle-sized ball of the protein ferrin, creating an empty cage called apoferritin, which he then loads with another metal, such as cadmium. The cadmium-fi lled cage is attached to one end of the reporting ...

American Chemical Society's Weekly PressPac -- Aug. 8, 2007

... the operation, a small incision in the front of the lens capsular bag is used to remove the clouded crystalline lens. The IOL is inserted into the empty capsular bag. Researchers noted that IOL replacement surgery is a safe and well-established procedure to correct the vision loss from a cataract. In ...

Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless

... for each participant. Then, the volunteers were asked to take four Polyphenon E capsules, for a total of 800 milligrams of EGCG, each morning on an empty stomach for four weeks and to abstain from drinking tea or eating many cruciferous vegetables, which contain other beneficial chemicals. Another ...

Eating with our eyes: Why people eat less at unbused tables

... for each person; dinner parties could use fresh glasses for refills while empty glasses, or even empty bottles, are left on the table. ...
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