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Science News Archive August 2008


Page 11 of 17

Protein key to control, growth of blood cells

Scientists have identified a crucial protein called Lnk that regulates the growth of stem cells in the bone marrow. The findings may aid in improving the success of bone marrow transplants and developing better treatments for blood disorders such as aplastic anemia and severe combined immunodeficiency disorders.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

UCI neuroscientist awarded $3 million state stem cell grant

Dr. Edwin Monuki will study choroid plexus epithelial cells, which produce cerebrospinal fluid to promote normal nervous system health and function. Success in generating these cells could lead to clinical therapies and screens for new drugs for neurological disorders.

Extensively drug-resistant tuberculosis found in California

California officials have identified 18 cases of extensively drug-resistant tuberculosis (XDR TB) between 1993 and 2006. The state has also seen a rising trend of multidrug-resistant tuberculosis (MDR TB) cases, with XDR TB being resistant to multiple classes of antibiotics.

Apple iPhone 17 Pro

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

How flesh-eating bacteria attack the body's immune system

Researchers at the University of California, San Diego, have discovered that flesh-eating bacteria can survive and spread in the body by degrading a key immune defense molecule. By inactivating this molecule, white blood cells become slower and weaker, allowing infections to spread out of control.

New robot scouts best locations for components of undersea lab

Researchers have successfully selected two sites for a pioneering seafloor laboratory off Washington and Oregon, thanks to the help of Sentry, an autonomous underwater vehicle. The lab will explore the ocean's ability to absorb greenhouse gases and study seafloor stresses that cause earthquakes and tsunamis.

Causes for sexual dysfunction change as people age

A new study reveals that a history of sexually transmitted disease increases the risk of sexual dysfunction in older adults. The study found that physical health and mental health are significant factors contributing to sexual problems in both men and women, with certain demographics experiencing specific challenges.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Scientists overcome nanotech hurdle

A team of researchers has developed a technique to examine tiny protein molecules called peptides on the surface of a gold nanoparticle, offering promise for designing and manufacturing novel materials at the nanoscale. This breakthrough allows for the creation of complex nanomachines and potentially new medical applications.

ASTRO announce 2008 fellows

The American Society for Radiation Oncology has named 30 individuals as its 2008 Fellows, honoring their significant contributions to radiation oncology. The recipients have demonstrated excellence in research, patient care, education, and leadership, making them outstanding professionals in the field.

The pandemic potential of H9N2 avian influenza viruses

Recent H9N2 viruses can transmit to ferrets in direct contact, but aerosol transmission is not observed. A single amino acid residue at the receptor-binding site plays a major role in transmission. The study suggests that establishment and prevalence of H9N2 viruses in poultry pose a significant threat to humans.

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.

Targeted radiation therapy can control limited cancer spread

Researchers at the University of Chicago Medical Center found that targeted radiation therapy can eradicate all signs of disease in up to 21% of patients with stage-IV cancer who have only a few sites of metastasis. The treatment was well-tolerated, with limited side effects, and showed promising results in controlling tumor growth.

Hurricanes and climate change: A sharper view

A new study suggests that global warming may lead to fewer hurricanes forming, but those that do could intensify. The research uses more accurate computer models to simulate hurricane formation and finds that warmer ocean temperatures suppress formation rather than encouraging it.

Risk assessment plays key role in long-term treatment of breast cancer

A study led by M. D. Anderson Cancer Center found that risk assessment can help determine the probability of breast cancer recurrence, allowing clinicians to make informed decisions about extended therapy. The research analyzed data from 2,838 women diagnosed with Stage I-III breast cancers and treated with adjuvant systemic therapy.

Apple AirPods Pro (2nd Generation, USB-C)

Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.

Study: Massaging muscles facilitates recovery after exercise

Researchers found that cyclic compression of muscles after intense exercise reduced swelling and muscle damage in a study using animals. The massaged muscles recovered an estimated 60% of strength and had fewer damaged muscle fibers compared to rested muscles.

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.

Losing weight soon after type 2 diabetes diagnosis doubles positive outcomes

A recent study published in Diabetes Care found that losing weight soon after a type 2 diabetes diagnosis can lead to better blood pressure and blood sugar control. The study followed over 2,500 adults with type 2 diabetes for four years and showed that those who lost weight were up to twice as likely to achieve their targets.

Adverse reactions to antibiotics send thousands of patients to the ER

A recent study published in Clinical Infectious Diseases reveals that adverse reactions to antibiotics cause an estimated 142,000 emergency department visits per year in the United States. The majority of these reactions are allergic, with over 80% being related to penicillins and other antibiotics.

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.

Towards zero training for brain-computer interfacing

A novel data analysis method has been developed that extracts representative spatial filters for each individual subject, reducing the need for calibration before every session. This approach may pave the way for practical daily use of brain-computer interfacing technology for both patients and healthy users.

Green roofs differ in building cooling, water handling capabilities

A recent study by The Lady Bird Johnson Wildflower Center at the University of Texas at Austin found significant variations in green roof performance across six manufacturers. Green roofs were found to cool buildings' interiors by up to 21% and capture rainwater during downpours, but differences varied greatly among products.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.

Long-term care workers struggle with elderly population boom

The growing demand for long-term care services is straining the workforce, with workers lacking support in pay and work relationships. The studies found that recruitment and retention are industry-wide problems, but also discovered that older people can play a role in addressing these issues.

'Erasing' drug-associated memories may stop drug addiction relapses

Researchers at the University of Cambridge have discovered that disrupting or erasing memories associated with drug use during recall can prevent relapse in recovering drug abusers. By blocking a brain chemical receptor important to learning and memory, scientists reduced drug-seeking behaviors in rats for up to four weeks.

Nature or nurture -- Are you who your brain chemistry says you are?

A new PET study reveals a direct correlation between hereditary personality traits, particularly reward dependency, and brain chemistry. Individuals with high reward dependence have higher opiate receptor binding in the ventral striatum, associated with increased cravings and addictive behavior.

Dying frogs sign of a biodiversity crisis

Researchers from UC Berkeley argue that devastating declines of amphibians worldwide signal a biodiversity disaster. The study highlights the impact of chytridiomycosis, habitat constriction, and pollution on frog populations, contributing to a sixth mass extinction event.

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.

Nano vaccine for hepatitis B shows promise for third world

A new nano vaccine for hepatitis B has been developed to address the drawbacks of current vaccines, which require refrigeration and can cause side effects. The vaccine uses a needle-free nasal delivery method and has been shown to be effective in producing strong immune responses in animal studies.

Also in the August 12 JNCI

Researchers identified specific HBV genotypes and mutations associated with increased liver cancer risk, including genotype C and basal core promoter mutation A1762T/G1764A. A combination of doxorubicin and zoledronic acid was found to reduce tumor size substantially in a mouse model of breast cancer.

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.

HIV risk higher among Indian women who are abused by husbands

A study of married Indian women found that those who experienced physical and sexual violence from their husbands had an increased risk of HIV infection. The prevalence of HIV among abused women was approximately four times higher than non-abused women, highlighting the importance of addressing intimate partner violence in preventing H...

Women in India abused by husbands at far greater risk for HIV infection

A new study reveals married Indian women who experience physical and sexual abuse are approximately four times more likely to become infected with HIV than those not abused. The study highlights the importance of addressing intimate partner violence in preventing HIV transmission among women in India.

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.

Changes in work force, not pay, narrowing the gender wage gap

A groundbreaking study by Brown University economist Yona Rubinstein and Casey Mulligan of the University of Chicago reveals that the apparent narrowing of the gender wage gap in recent decades is due to changes in the type of women entering the workforce, not actual pay increases. The research found that growing wage inequality within...

AGU journal highlights -- Aug. 12, 2008

A recent study predicts a fast rise in scorching days, with temperatures exceeding 40 degrees Celsius by the end of this century. Another record reveals a 1000-year history of hurricane activity in Boston, Massachusetts. Climate zones are also shifting southward in Australia due to warming sea surface temperatures.

Scientists use old enemy to K.O. cancer

Researchers use ruthenium as a catalyst to increase oxidant levels in infected cells, ultimately destroying cancerous cells. The study offers a promising alternative to traditional cancer treatments, which often adapt quickly to targeted drugs.

Garmin GPSMAP 67i with inReach

Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Study reveals surprising details of the evolution of protein translation

A new study reveals that transfer RNA's (tRNA) dual functions of reading the genetic blueprint and adding amino acids to proteins evolved independently. The findings suggest that these functions were acquired at different points in time, with protein synthesis preceding the refinement of the genetic code.

Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

Climate change may boost Middle East rainfall

New research suggests that climate change may increase Middle East rainfall by up to 50% in the Euphrates-Tigris watershed, contrary to previous projections. This could alleviate agricultural challenges and reduce food shortages.

Why an exciting book is just as thrilling as a hair-raising movie

Researchers found that the same brain regions are activated when observing facial expressions of disgust in others and experiencing it oneself. This study suggests that reading a book can elicit emotional responses comparable to those experienced while watching a movie, thanks to the shared brain activity patterns.

New evidence implicates humans in prehistoric animal extinctions

Research by UK and Australian scientists suggests that humans hunted Tasmania's giant kangaroos and marsupial 'rhinos' and 'leopards' until their extinction, contrary to previous climate change theories. The findings provide the first evidence of human involvement in the mass extinction event, which took place around 41,000 years ago.