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Science News Archive 2006


Page 10 of 178

Health benefits, risks weighed for mammography in 40-something women

A study of 160,000 women screened in their 40s compared to those in their 50s found little change in estimated overall survival. The authors conclude that the benefits of early detection may outweigh the risks of radiation-induced breast cancer, but the uncertainty remains too great to make a definitive recommendation.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Liverpool launches £20 million project to develop medicines for children

The UK has launched a £20 million project to develop medicines specifically for children, addressing the lack of proper testing on young patients. The Medicines for Children Research Network (MCRN) aims to improve treatment and care through new research and partnerships with healthcare professionals, parents, and pharmaceutical industry.

New biomarker predicts effectiveness of breast cancer drugs

Researchers discovered a new biomarker that predicts which tumors will resist anti-estrogen therapy, potentially improving treatment outcomes for breast cancer patients. The study found that disrupted retinoblastoma tumor suppressor pathway can lead to resistance to these therapies.

Natural protein stops deadly human brain cancer in mice

Researchers used a natural protein called BMP4 to inhibit glioblastoma, a deadly human brain cancer, in mice by targeting stem-cell-like clusters that feed the cancer. The treatment was successful in stopping cancer growth and improving survival rates.

Apple MacBook Pro 14-inch (M4 Pro)

Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.

Ancient ape ruled out of man's ancestral line

The discovery of Little Foot, an Australopithecus fossil, has been revised to be around 2.2 million years old, pushing it back from earlier estimates of 3-4 million years. The findings suggest that Little Foot is a distant cousin rather than a direct ancestor of humans.

MIT: Engineered yeast speeds ethanol production

MIT scientists engineered a new strain of yeast that can tolerate elevated levels of ethanol and glucose, producing ethanol faster than un-engineered yeast. This breakthrough could dramatically impact industrial ethanol production, boosting the US energy supply.

The UK's third case of vCJD associated with blood transfusion

A new case of variant Creutzfeldt-Jakob disease (vCJD) linked to a blood transfusion has been confirmed in the UK. The patient developed symptoms six years after receiving a contaminated blood sample from a donor who later died from vCJD. Early diagnosis and monitoring are crucial for affected individuals.

Davis Instruments Vantage Pro2 Weather Station

Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.

SCAI president testifies before FDA on safety of drug-eluting stents

The Society for Cardiovascular Angiography and Interventions president urges the FDA to consider the benefits of drug-eluting stents when evaluating risks. The use of these devices has been linked to a slightly higher risk of late blood clot formation, but the benefits of preventing restenosis outweigh the risks.

Hormonal contraception does not appear to increase HIV risk

A large NIH-commissioned study found no evidence that hormonal contraception increases a woman's chances of becoming infected with HIV. The study followed thousands of women in Africa and compared their patterns of contraceptive use to their risk of infection with HIV, finding no statistically significant difference.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Study highlights new and cheaper way to treat heroin addiction

A new study has identified dihydrocodeine as an equally effective alternative to expensive methadone treatment for heroin addiction. The prescription painkiller is cheaper, safer and less toxic, with estimated annual costs of £713 compared to £1,500 for methadone.

Bioprospecting not biopiracy

A novel program in Panama trains professionals to advance drug discovery, reducing costs and promoting tropical biodiversity conservation. The International Cooperative Biodiversity Groups (ICBG) program provides economic and educational benefits for local students and communities.

Ancient climate change may portend toasty future

Scientists have found that an ancient global warming event, the Paleocene-Eocene Thermal Maximum, was caused by a massive release of carbon, which heated the planet by 9°F in less than 10,000 years. The research suggests that the climate is even more sensitive to added CO2 than previously thought.

DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

A new approach to growing heart muscle

Researchers developed a rapid 3D cell-growth technique that produces organized heart muscle tissue capable of generating pulsating forces and reacting to stimulation. The technique uses fibrin gel to support rat cardiac cells, resulting in tissue with significantly better properties than previous methods.

T-beta-RIII joins the fight against breast cancer

Research suggests that T-beta-RIII can suppress breast cancer progression by blocking TGF-beta signaling. Low levels of T-beta-RIII are associated with decreased recurrence-free survival in patients with breast cancer.

Infectious disease researchers develop basis for experimental melanoma treatment

Researchers discovered a potential strategy for treating metastatic melanoma by combining an antibody with radiation, leveraging insights from studying a fungus that causes infection in people with AIDS. The treatment approach shows promise in inhibiting tumor growth and inducing regression in mice with small melanoma tumors.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

'Erectile dysfunction' drugs heighten natural anti-cancer activity

Scientists at Johns Hopkins Medicine discover that sildenafil and other erectile dysfunction drugs can unmask cancer cells, allowing the immune system to recognize and attack them. The study found that these drugs reduce tumor size in mice with colon and breast tumors by increasing nitric oxide levels.

Malaria may fuel spread of HIV in sub-Saharan Africa

A new study by researchers at Fred Hutchinson Cancer Center and the University of Washington found that malaria increases HIV transmission to sex partners by up to 10 times. HIV-infected individuals are also more susceptible to malaria infections due to their compromised immune systems, fueling a rise in adult malaria-infection rates.

Aggressive stem cells might improve transplant outcome

Researchers at St. Jude Children's Research Hospital found that harvesting aggressive stem cells from donated bone marrow can reduce the time it takes for a child's immune system to rebuild after a bone marrow transplant. This could lead to lower risk of fatal virus infections and improved long-term outcomes.

Smoking worsens knee osteoarthritis

Men with knee osteoarthritis who smoke experience greater cartilage loss and more severe pain than non-smokers. Smoking is a potentially modifiable risk factor for worsening knee osteoarthritis.

JCI table of contents: December 7, 2006

Researchers discovered that changes in expression of one component of the TGF-beta receptor, T-beta-RIII, might provide a mechanism for the distinct effects of TGF-beta at different stages of breast cancer. Additionally, analysis of RB functionality could help clinicians determine the most effective therapy for their patients.

Nikon Monarch 5 8x42 Binoculars

Nikon Monarch 5 8x42 Binoculars deliver bright, sharp views for wildlife surveys, eclipse chases, and quick star-field scans at dark sites.

Not ready to quit? Try cutting back

Researchers found that cutting back on cigarettes led to quitting in 16 out of 19 studies. Smokers who reduced their smoking intake experienced similar cessation rates as those receiving smoking cessation advice.

Engineered yeast speeds ethanol production

Scientists have engineered yeast to improve ethanol production efficiency by increasing tolerance to high ethanol levels and producing more ethanol during fermentation. The new strain of yeast can survive elevated ethanol concentrations and produces 50% more ethanol in a shorter period.

Breakthrough in magnetic devices could make computers more powerful

Researchers have developed a way to precisely control magnetic fields in thin magnetic films, enabling the storage of information in permanent memory. The new technology allows for faster and more efficient data storage, overcoming the limitations of current hard drive technology.

Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

Treatment discovered for deadly childhood disease

A year-long study found that enzyme replacement therapy reduced the risk of death in children with Pompe disease by 99 percent. The treatment, which involves replacing the deficient enzyme acid a-glucosidase, was shown to improve respiratory performance and reduce the need for ventilators.

Origin of inherited pain disorder pinpointed

Researchers pinpointed paroxysmal extreme pain disorder (PEPD) to specific porelike sodium channels in peripheral nerve cells, highlighting the role of such channel disorders in inflammatory pain. Mutations in SCN9A gene were found to be responsible for at least two-thirds of PEPD cases.

Protein's tail may be flu virus's achilles heel

Researchers at Rice University and UT Austin have identified a promising antiviral drug target in the long, flexible tail of the nucleoprotein protein. Minor changes to this region prevent the protein from fulfilling its role in structural columns that transmit viral copies.

Researchers learn from analyses of rare tsunami earthquake

Analyses of a classic, slow-rupturing tsunami earthquake have provided insight into seismologists and engineers. The data revealed a secondary underwater movement that amplified the original tsunami, creating a wave run-up of over 60 feet along a one-mile section of coastline.

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C)

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Don't move a muscle: Evolutionary insight into myogenesis

Researchers detail transcription network driving muscle development in C. elegans and propose evolutionary conserved program across animals. Three transcription factors redundantly control body wall muscle development in worms, with corresponding vertebrate factors playing key roles in myogenesis.

Global warming will reduce ocean productivity, marine life

A 10-year satellite-based analysis found that global warming reduces marine life and phytoplankton production, which removes carbon dioxide from the atmosphere and fuels ocean ecosystems. This study reveals a tight link between climate change and ocean productivity, highlighting the importance of understanding this feedback mechanism.

Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

Study looks at effects of national trauma on Americans' health

A longitudinal US study explores how individuals respond to national trauma and their long-term health outcomes. The research found that people's initial emotional response to a disaster, their approach to coping with the trauma, and their demographic background significantly impacted their health over time.

Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Psychologist to study how we put stress into words

A new project led by Dr Padraic Monaghan will investigate the mechanism of language processing that determines stress in words, potentially aiding the treatment of reading difficulties and second language learning. The research may also provide insights into neurological representations of language and recovery following brain injury.

Hotspots or not? Isotopes score one for traditional theory

A recent study in Nature supports the traditional theory of mantle plumes as the source of volcanic islands. Researchers found a close correlation between modeled and observed ratios of uranium-series isotopes across eight island locations, allowing them to estimate changes in temperature, speed, and size of mantle plumes.

Brown scientists map structure of DNA-doctoring protein complex

Researchers at Brown University have solved the structure of a DNA-protein complex that aids in site-specific recombination, a process that allows mobile DNA to cut into chromosomes. The discovery provides new insights into how this process shapes species over time and its role in spreading antibiotic resistance and certain diseases.

Tracing the formation of long-term memory

A team of researchers from Baylor College of Medicine has found a key component in the formation of long-term memory in fruit flies. The study showed that increased calcium influx into mushroom body neurons parallels the creation of new synapses associated with long-term memory, and can be blocked by specific laboratory techniques.

Celestron NexStar 8SE Computerized Telescope

Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.

Scientists learning to create nanomaterials based on micro-algae patterns

Researchers are studying how unicellular micro-algae, known as diatoms, create complex cell walls and aim to learn from their intricate micro-architectures. Genetic engineering of diatoms using microparticle bombardment enables the insertion of mutated or foreign genes into the genome, potentially leading to novel silica nanostructures.

Factors affecting kernel yield in maize

Research reveals two isoforms of glutamine synthetase determine major yield components in maize: kernel size and number. Nitrogen retranslocation dominates grain filling, improving nitrogen use efficiency and yields with reduced fertilizer inputs.

No matter their size black holes 'feed' in the same way

Astronomers found that black holes of all sizes follow the same 'feeding' process, with characteristic timescales changing linearly with mass and inversely with accretion rate. This discovery helps determine black hole masses in hard-to-reach cases.

Elusive rust resistance genes located

Researchers have identified a DNA marker that is 99% effective in flagging the presence of Lr34 and Yr18 rust resistance genes. This breakthrough enables breeders to quickly test seedlings for these genes, allowing them to incorporate durable rust resistance into new wheat varieties.

Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.