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Science News Archive April 2007


Page 3 of 17

Florida Tech explores microalgae for biofuel

Researchers are testing optimal conditions for microalgae growth in outdoor settings to optimize large-volume cultures for biofuel production. The warm Florida climate makes large-scale production a possibility, and the process has potential to remove carbon dioxide from the air.

Volcanic eruptions, ancient global warming linked

Researchers confirmed a direct link between volcanic eruptions and global warming, with sea surface temperatures rising by up to six degrees in the Arctic. The study analyzed ash layers and marine fossil records to establish this connection about 55 million years ago.

Over time, more women are developing MS than men

Research presented at the American Academy of Neurology's meeting found that more women are developing MS than men, with a nearly 50% increase in the female-to-male ratio over the past few decades. The study suggests that various changes in lifestyle and environmental factors may be contributing to this trend.

Celestron NexStar 8SE Computerized Telescope

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

Girls born with HIV infection at higher risk for cervical problems

A recent study monitored the reproductive health of adolescent girls perinatally infected with HIV, revealing a higher than expected rate of cervical abnormalities. Nearly half of the girls had abnormal cervical cells, highlighting the need for targeted prevention strategies.

Vaccine to cope with viral diversity in HIV

Researchers developed an efficient algorithm to create vaccines that can combat the genetic diversity of HIV-1. The algorithm captures immunogens for both the Nef and Gag proteins, reflecting high-frequency viral strains and their mutations.

News tips from the Journal of Biological Chemistry

The Journal of Biological Chemistry published several studies revealing new insights into cholesterol metabolism without oxygen, a compound effective against blood cancer, bacteria's quorum sensing mechanism, and HIV infection. These discoveries could lead to the development of new pharmaceuticals and treatments for related diseases.

Spinal manipulation in children studied

A recent study by the University of Alberta highlights the need for improved reporting and surveillance to better understand the incidence of adverse events in children treated with spinal manipulation. Serious injuries, such as stroke and paraplegia, were found to be rare but warrant further investigation.

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.

New mechanism identified for resistance to targeted lung cancer drugs

Researchers discovered a new way lung tumors become resistant to targeted therapy drugs like Iressa and Tarceva, involving the activation of an oncogene that bypasses blocked growth signal. A potential new treatment strategy using combination therapy against both protein targets is suggested for patients with resistant tumors.

Drug therapy can reduce preterm births and decrease lifetime medical costs

Researchers found that treating expectant mothers with 17 Alpha Hydroxyprogesterone caproate reduces short-term and lifetime medical costs in offspring by an estimated $2 billion annually. This could lead to significant cost savings for the US healthcare system, making it a promising preventive measure against preterm births.

How dogs don't ape

New research shows that dogs selectively imitate actions, adjusting to circumstances like human infants. The study found that dogs use their mouths instead of paws when the demonstrator's mouth is occupied.

Apple iPhone 17 Pro

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

Low-energy LED lighting project is streets ahead

Researchers at the University of Manchester are developing low-cost LED lighting modules that can be used in buildings and on roads, offering a potential 25-50% reduction in energy consumption. The project aims to tackle thermal and electrical issues associated with high-powered LEDs.

Researchers identify new genetic risk factors for type 2 diabetes

Researchers have identified at least four new genetic variants associated with increased risk of diabetes and confirmed the existence of six more, boosting the number of known genetic variants to 10. These findings may lead to personalized medicine approaches by exploring how these genetic factors interact with lifestyle factors.

Minuscule molecules pack a powerful punch

A microRNA in mouse immune cells is shown to balance the response of immune defenses, with its equivalent human gene playing a vital role. Knockout mice develop autoimmune symptoms and are less resistant to bacterial infections, highlighting the importance of this microRNA in the immune system.

Ocean's 'twilight zone' plays important role in climate change

A new study published in Science sheds light on the dim layer of the ocean known as the twilight zone, which affects the ocean's ability to absorb and store carbon dioxide. The research found that only a small percentage of carbon transported to the depths is stored, with most being recycled in the twilight zone.

Oxford physiology professor earns APS' Walter B. Cannon Award

Dr. Frances M. Ashcroft's research discovered a rare genetic form of diabetes, permanent neonatal diabetes mellitus, and developed a treatment allowing children to switch from daily insulin injections to a daily pill. The American Physiological Society presented her with the Walter B. Cannon Award.

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.

Army research mission focused on autism

The US Army's Autism Spectrum Disorder Research Program aims to improve treatment outcomes for individuals with ASD. The program promotes innovative research that advances understanding and leads to better treatments.

Wanting ahead -- Birds plan for future desires

A new study reveals that Western scrub-jays can anticipate their future needs independently of their current motivation. The birds store food in places where they will be hungry and recover it at a later date. This innovative behavior demonstrates the birds' ability to plan ahead, a feature previously thought to be uniquely human.

Syphilis rate on rise in US gay, bisexual men

Syphilis rates among US gay and bisexual men have seen a significant increase, rising by 19% between 2000 and 2003. The rates jumped by 62% among men, with 62% of those infected being gay or bisexual, while rates among women continued to slide.

Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

Autopsies are crucial despite concerns

Autopsies continue to reveal major pre-death diagnostic errors in around 30% of cases, highlighting their importance in improving national mortality data. The procedure also teaches valuable lessons about the inherent uncertainty in medical practice and is integral to training and development for doctors.

Collapse of teenage clubber highlights dangers of new drug

A teenage girl in London collapsed in a nightclub after taking 1-benzylpiperazine tablets, highlighting the dangers of this new drug. Analysis revealed the presence of the substance in her blood and seized tablet, which was linked to similar symptoms in seven other patients.

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.

Food cue-related brain activity linked to obesity?

Researchers found a unique pattern of gene expression in rats that may be linked to a conditioned desire for food and excessive food intake. Food-associated cues triggered dramatic changes in brain regions involved in adaptive behavior, such as the amygdala and nucleus accumbens.

Researchers 'look into' plant cells to increase ethanol yields

Scientists have found that pretreating corn plant tissue with hot water increases ethanol yields by exposing minute pores of the cell walls, allowing enzymes to break down cellulose more efficiently. This discovery could lead to a viable method for large-scale production of cellulosic ethanol, a key component of green fuels.

Protein found that slows hepatitis C growth in liver cells

Scientists at the University of Texas Medical Branch have discovered a cellular protein, PAK1, that interferes with hepatitis C virus replication. The finding may lead to new drug development to fight the virus, which affects approximately 170 million people worldwide.

Tracking genes for self-pollination in arabidopsis

Researchers have identified a key gene, PUB8, that regulates the expression of SRK and SCR genes, crucial for self-incompatibility in plants like Arabidopsis. This finding may enable the development of hybrid seeds and improve crop yields.

Meta Quest 3 512GB

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

Simple system accurately predicts weight-loss surgery risk

A scoring system based on weight, gender, age, blood pressure and clot risk accurately predicts patient mortality after gastric bypass surgery. The system categorizes patients as low-risk, medium-risk or high-risk, with those in the high-risk group facing a six times higher mortality rate.

Nanotechnology provides 'green' path to environmentally sustainable economy

A new report from the Project on Emerging Nanotechnologies explores the potential of nanotechnology to build an environmentally sustainable society. The report highlights several promising applications, including the use of nanoparticles to clean up toxic waste sites and reduce lead emissions in electronics manufacturing.

Female ticks have market on gluttony

Female ixodid ticks exhibit remarkable weight gain following mating, with some species increasing in size up to 100 times their original size. This phenomenon is linked to the tick's unique lifestyle and reproductive strategy, which involves prolonged feeding periods and specialized signals triggered by copulation.

Doctors feel cut off from professionalism debate

A recent Comment in The Lancet highlights the pessimism among doctors regarding professionalism and their disconnection from debates on the subject. However, the Royal College of Physicians' two-year inquiry has started to provide valuable lessons that can shape systemic change.

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.

Many couples choose to donate surplus embryos for stem cell research

A recent study published in Cell Stem Cell found that nearly half of couples who underwent in vitro fertilization (IVF) chose to donate their surplus embryos for stem cell research. The key factor was a clear explanation of the options, which helped couples navigate the legal situation and address concerns about donation.

Dopamine-related drugs affect reward-seeking behavior

Researchers found people taking levodopa were 95% more likely to choose symbols associated with higher monetary gains than those on haloperidol. Dopamine depletion may lead to lack of motivation in Parkinson's disease patients.

MEDICUS Project wins Internet2 Idea award

The Globus MEDICUS project is recognized for its potential to enable advanced healthcare by securely exchanging bandwidth-intensive medical resources and images. The project aims to create a technological platform for seamless communication between healthcare providers, researchers, and patients.

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.

BDSI announces positive phase III clinical trial results

The Phase III efficacy clinical trial showed statistically significant improvement on the primary efficacy endpoint at 30 minutes compared to placebo, indicating a greater reduction in pain. Patients treated with BEMA Fentanyl also demonstrated well-tolerated treatment with no reported drug-related changes to the oral mucosa.

New hereditary breast cancer gene discovered

Scientists have found a new hereditary breast cancer gene, TWIST1, linked to Saethre-Chotzen syndrome, increasing breast cancer risk by nearly twenty times. Early mammograms are now recommended for young women with the syndrome to detect breast cancer at an early stage.

Yerkes researchers awarded $10 million for comparative aging study

The study aims to identify ways to diagnose and treat aging-related diseases earlier, using chimpanzees and rhesus macaques compared to humans with Alzheimer's disease and mild cognitive impairment. The researchers hope to develop new treatments based on specific physiological changes.

Cosmologically speaking, diamonds may actually be forever

A paper by Lawrence Krauss and Robert Scherrer suggests that matter will dominate over radiation in an ever-expanding universe dominated by dark energy. This means that ordinary matter particles, such as protons and neutrons, will remain stable for trillions of years, potentially allowing life to endure forever.

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.

Commonly used pain medications do not prevent Alzheimer's disease

A clinical trial involving over 2,100 participants found that commonly used pain medications such as naproxen and celecoxib did not reduce the incidence of Alzheimer's disease. The study suggests that these medications should not be taken primarily to prevent Alzheimer's disease.

Short chromosomes put cancer cells in forced rest

A Johns Hopkins team has discovered that shortening chromosome ends, called telomeres, can prevent cancer cells from growing by inducing a process known as senescence. This breakthrough could lead to new ways of preventing or treating cancer.

Asymmetry due to perfect balance

A team of scientists has developed a new method to analyze the development of cortical polarity in cell membranes, which is essential for various cellular processes. They combined experiments with living cells and a mathematical model, showing that polarized regions are defined with near-optimal precision.

New nanocomposite processing technique creates more powerful capacitors

Researchers at Georgia Tech have developed a new technique to create films of barium titanate nanoparticles in a polymer matrix, allowing for improved capacitors that store twice as much energy as existing devices. The technique uses tailored organic phosphonic acids to encapsulate and modify the surface of the nanoparticles.

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.

New materials for making 'spintronic' devices

Scientists at Brookhaven National Laboratory have devised methods to make spintronic devices based on electron spin, potentially increasing electronic device productivity. The development uses graphene-magnet multilayers and aims to create a full spectrum of spintronic devices, including re-writable microchips and transistors.

Halos and horns: Fixing the 'taste' of diet soda

University of Illinois researchers identify mouth-feel as key factor in diet soda taste, finding ingredient that gives body without adding calories. Flavour plays a crucial role in masking the mouth-feel difference, making lemon-lime flavor more appealing.

Hay fever can send work productivity down the drain

A study of nearly 600 people with hay fever symptoms found that workers missed an average of one hour of work per week during peak seasons. Diagnostic testing followed by proper treatment may help reduce missed work days.

Why nanowires make great photodetectors

Researchers at UC-San Diego have discovered that nanowire photodetectors can achieve single-photon sensitivity, making them highly sensitive to light detection. The unique geometry of nanowires traps holes, increasing the time electrons travel down the wire and triggering an increase in current.

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.

An electroacoustic path to custom-made gene chips

A University of Southern California researcher has improved a technique to create custom-made gene chips, allowing researchers to detect specific message sequences in samples. The new method uses precise directional soundwaves to synthesize DNA bases on thin membranes, enabling the creation of high-quality microarrays.

'No' doesn't always mean 'no'

A study suggests that people who decline to participate in research may not necessarily object to taking part, but rather due to confusion about the research nature and process. This finding highlights the importance of clarifying potential sources of confusion in participation requests.

Global warming, Antarctic ice is focus of multinational workshop

A record-setting Antarctic ice core extracted during a recent drilling expedition provides unprecedented detail on the Ross Ice Shelf's history, indicating fluctuations of up to 50 times over the last 5 million years. The research project, ANDRILL, aims to understand the impact of global warming on oceans worldwide.

The Gerontological Society of America chooses 2007 Hartford Faculty Scholars

The Gerontological Society of America has selected 10 faculty members as the newest inductees into the Hartford Faculty Scholars Program, a program aiming to improve older adults' well-being by increasing trained geriatric social workers. The scholars receive $100,000 in funding over two years for professional development.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

New treatment for fungus which causes thrush and sepsis

A new treatment, micafungin, has been shown to be equally effective as existing treatments in treating Candida-related infections. With fewer side effects, micafungin is a promising alternative for first-line therapy of candidemia and invasive candidosis.