Why do airline tickets become more expensive as the travel date approaches whereas theater tickets are sold at half price in Leicester Square on the day of the performance? In their recent article published in the Economic Journal, ("Advance Purchase Discounts versus Clearance Sales"), Professors Marc Möller and Makoto Watanabe from the UC3M Department of Economics have considered the pricing of products that can be purchased in advance, i.e., long before their actual date of consumption. Further examples include seasonal products like the newest skiing equipment or entry ...

NGC 1365 is one of the best known and most studied barred spiral galaxies and is sometimes nicknamed the Great Barred Spiral Galaxy because of its strikingly perfect form, with the straight bar and two very prominent outer spiral arms. Closer to the centre there is also a second spiral structure and the whole galaxy is laced with delicate dust lanes. This galaxy is an excellent laboratory for astronomers to study how spiral galaxies form and evolve. The new infrared images from HAWK-I are less affected by the dust that obscures parts of the galaxy than images in visible ...

To most air travelers, it is an annoying fact of life: the prohibition of liquids in carry-on luggage. Under aviation security regulations introduced in Europe in November 2006, passengers who wish to take liquids such as creams, toothpaste or sunscreen on board must do so in containers no larger than 100 ml (roughly 3.4 fluid oz.). The EU provisions came in response to attempted attacks by terrorist suspects using liquid explosives on trans-Atlantic flights in August 2006. Now, travelers have a reason to hope to see the prohibition lifted. On November 19, 2009, the EU ...

The greater one's responsibilities, the more a person grows. The same principle applies to the human bone: The greater the forces it bears, the thicker the tissue it develops. Those parts of the human skeleton subject to lesser strains tend to have lesser bone density. The force of stress stimulates the growth of the matrix. Medical professionals will soon be able to utilize this effect more efficiently, so that implants bond to their patients' bones on more sustained and stable basis. To do so, however, the bone replacement must be shaped in a manner that fosters ingrowth ...

Taking part in sports is good all round for young teens: physically, socially, and mentally, according to a new study1 by Dr. Keith Zullig and Rebecca White from West Virginia University in the US. Their research shows that middle-school teenagers who are physically active and play on sports teams are more satisfied with their life and feel healthier. Zullig and White's paper is published online in Springer's journal Applied Research in Quality of Life. Although the benefits of physical activity are well documented among teenagers, middle school children are an understudied ...

Researchers at Cedars-Sinai Medical Center and 50 other centers found that weight-based dosing of taribavirin reduces rates of anemia while increasing sustained virologic response (SVR) in patients with chronic hepatitis C (HCV). Full details of this study are available in the October issue of Hepatology, a journal published by Wiley-Blackwell on behalf of the American Association for the Study of Liver Diseases (AASLD). Chronic HCV is typically treated with ribavirin (RBV). When used in combination with peginterferon alfa (peg-IFN), RBV significantly enhances on-treatment ...

The Advanced Camera for Surveys (ACS) on the NASA/ESA Hubble Space Telescope has captured a dramatic view of gas and dust sculpted by intense radiation from hot young stars deep in the heart of the Lagoon Nebula (Messier 8). This spectacular object is named after the wide, lagoon-shaped dust lane that crosses the glowing gas of the nebula. This structure is prominent in wide-field images, but cannot be seen in this close-up. However the strange billowing shapes and sandy texture visible in this image make the Lagoon Nebula's watery name eerily appropriate from this viewpoint ...

A new study published in the October issue of the journal Hepatology found that patients with severe portal-hypertensive bleeding who are treated with terlipressin may experience an acute reduction of sodium in their blood. This reduction in serum sodium, known as hyponatremia, can cause adverse reactions such as neurological complications, and is rapidly reversible upon terlipressin withdrawal. Researchers suggest that serum sodium should be closely monitored in these patients and caution that use of solutions with high sodium content to treat this condition may cause ...

Researchers at the University of Sheffield have discovered that cuckoo eggs are internally incubated by the female bird for up to 24 hours before birth, solving for the first time the mystery as to how a cuckoo chick is able to hatch in advance of a host's eggs and brutally evict them. Published today (22 September 2010) in the journal Proceedings of the Royal Society of London, Series B, the research shows that internal incubation allows the cuckoo chick to hatch before its nest mates, evict them, and monopolise the food brought by the foster parents. Although previous ...

With the help of genetic materials from a cow's rumen, U.S. Department of Agriculture (USDA) scientists are developing new ways to break down plant fibers for conversion into biofuel. To convert corn stover and switchgrass into biofuel, the plant fibers must first be broken down into sugars. But cell wall polymers are cross-linked in various ways that make them very resistant to breaking down, according to Dominic Wong, a chemist at the USDA Agricultural Research Service (ARS) Western Regional Research Center, in Albany, Calif. ARS is the principal intramural scientific ...

If you are more inclined to love thyself than thy neighbor, it could be your mother's fault. Those are the findings of Francisco Úbeda, assistant professor of ecology and evolutionary biology at the University of Tennessee, Knoxville. Úbeda, along with fellow evolutionary biologist Andy Gardner from Oxford University, examined the impact that genomic imprinting has on the carrier's selfish or altruistic behavior. Genomic imprinting is the phenomenon in which the expression of a gene depends upon the parent who passed on the gene. Every person has a set of chromosomes ...

EAST LANSING, Mich. — Developing language skills appears to be more important for boys than girls in helping them to develop self-control and, ultimately, succeed in school, according to a study led by a Michigan State University researcher. Thus, more emphasis should be placed on encouraging boy toddlers to "use their words" – instead of unruly behavior – to solve problems, said Claire Vallotton, MSU assistant professor of child development. "It shouldn't be chalked off as boys being boys," Vallotton said. "They need extra attention from child-care providers and teachers ...

INFORMATION: Research in Boston University’s Center for Space Physics involves interdisciplinary projects between members of the Astronomy Department in the College of Arts and Sciences and faculty, staff and students in the College of Engineering. Research areas include observational and theoretical studies in atmospheric, ionospheric and magnetospheric physics, planetary and cometary atmospheres, solar and heliospheric physics, and space weather. Founded in 1839, Boston University is an internationally recognized private research university with more than 30,000 ...

September 22, 2010 – (BRONX, NY) On Monday, September 27, researchers from Albert Einstein College of Medicine of Yeshiva University will hold a congressional briefing in Washington, D.C., aimed at focusing attention on the alarming global diabetes epidemic. Incidence of diabetes is increasing worldwide at a rate that eclipses most other diseases. The World Health Organization estimates that by the year 2030, more than 366 million people will be suffering from diabetes, 10 times the number affected by HIV/AIDS. Of that 366 million, more than 298 million will live in ...

How could the current financial crisis have happened? While fingers have been pointing to greedy banks, subprime-loan officers, and sloppy credit card practices, these are not the only contributors to the economic downturn. A new report in Psychological Science in the Public Interest, a journal of the Association for Psychological Science, examines the psychology of financial decision making, including the role of risk in making economic choices, how individuals behave in stock and credit markets, and how financial crises impact people's well-being. Risk taking is a ...

Alexandria, Va., USA – Dental caries is a highly prevalent disease that is disproportionately distributed in the population. Caries occurrence and progression is known to be influenced by a complex interplay of both environmental and genetic factors, with numerous contributing factors having been identified including bacterial flora, dietary habits, fluoride exposure, oral hygiene, salivary flow, salivary composition, and tooth structure. Previous reports have characterized the influence of the genetic variation on taste preferences and dietary habits. In an article ...

ROCHESTER, Minn. -- A new Mayo Clinic study found that nerve inflammation may cause the pain, numbness and weakness following surgical procedures that is known as postsurgical neuropathy. The development of postsurgical neuropathies is typically attributed to compression or stretching of nerves during surgery. This new research shows that, in some cases, the neuropathy is actually caused by the immune system attacking the nerves and is potentially treatable with immunosuppressive drugs. The study was published in this month's issue of Brain. Postsurgical neuropathy is ...

The water in the canals and irrigation channels in the L'Albufera Natural Park in Valencia contain cocaine, ecstasy and a further six drugs. This has been confirmed by a study carried out by researchers from the University of Valencia (UV), who have issued a warning about the continued presence of these substances on wildlife and human health. "The results confirm the presence of drugs such as cocaine, amphetamines, codeine, morphine and cannabis in the surface waters of the L'Albufera National Park at levels ranging between 0.06 and 78.78 nanograms/litre", Yolanda Picó, ...

Children conceived by in vitro fertilization (IVF) perform at least as well as their peers on academic tests at all ages from grade 3 to 12, according to a new University of Iowa study. In fact, the study, published in the October issue of the journal Human Reproduction, found that children who were conceived by IVF actually scored better than age- and gender-matched peers on the Iowa Test of Basic Skills and the Iowa Test for Educational Development (ITBS/ED). "Our findings are reassuring for clinicians and patients as they suggest that being conceived through IVF ...

What if there was a drug that could completely eliminate airborne disease transmission that occurs when someone coughs? Researchers at the University of Alberta believe they have found a way to achieve this. The idea behind this work came from Malcolm King and his research associate Gustavo Zayas, who work in the Division of Pulmonary Medicine at the U of A's Faculty of Medicine & Dentistry. King and Zayas developed a drug that, when inhaled, would reduce or eliminate the amount of droplets, called bioaerosol, coming out of the mouth when a disease-infected person coughs. ...

Scientists are reporting the development and successful initial testing of a new form of methotrexate — the mainstay anticancer drug — designed to be given as nose drops rather than injected. It shows promise as a more effective treatment for brain cancer, they say. The report appears in ACS' Molecular Pharmaceutics, a bi-monthly journal. Tomotaka Shingaki and colleagues note that brain cancer is difficult to treat, partly because current anticancer drugs have difficulty reaching the brain. That's because the so-called blood-brain barrier (a protective layer of cells ...

We've all heard the saying about people who can't walk and chew gum at the same time, but it turns out that walking and talking is difficult enough, especially for people with Parkinson's disease who are at increased risk for falls with injury. A new Florida State University study found that older adults with Parkinson's disease altered their gait — stride length, step velocity and the time they spent stabilizing on two feet — when asked to perform increasingly difficult verbal tasks while walking. But the real surprise was that even older adults without a neurological ...

The antibacterial ingredient in some soaps, toothpastes, odor-fighting socks, and even computer keyboards is pointing scientists toward a long-sought new treatment for a parasitic disease that affects almost two billion people. Their report on how triclosan became the guiding light for future development of drugs for toxoplasmosis appears in ACS' monthly Journal of Medicinal Chemistry. In the study, Rima McLeod and colleagues point out that toxoplasmosis is one of the world's most common parasitic infections, affecting about one-third of the world population, including ...

Researchers from the Cardiac & Vascular Institute at NYU Langone Medical Center will present at the Transcatheter Cardiovascular Therapeutics (TCT) 2010 scientific symposium on September 21-25, 2010 in Washington, DC. They will be available for interviews during the conference. Louis Miller, MD Interventional Cardiology Fellow, Department of Medicine, Leon H. Charney Division of Cardiology at NYU Langone Medical Center Wednesday, September 22, 2010 Presenter •Very Long-term Clinical Follow-up After Fractional Flow Reserve-Guided Coronary Revascularization, ...

An unusual substance known as "dry water," which resembles powdered sugar, could provide a new way to absorb and store carbon dioxide, the major greenhouse gas that contributes to global warming, scientists reported at the 240th National Meeting of the American Chemical Society. The powder shows bright promise for a number of other uses, they said. It may, for instance, be a greener, more energy-efficient way of jump-starting the chemical reactions used to make hundreds of consumer products. Dry water also could provide a safer way to store and transport potentially harmful ...