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Science News Archive March 2009


Page 15 of 26

Dendritic cells ensure immune tolerance

Research suggests that dendritic cells are essential for generating and maintaining immunological tolerance. Without these cells, the immune system fails to distinguish between self and foreign substances, leading to autoimmune responses. This study highlights the critical role of dendritic cells in protecting against autoimmune diseases.

JCI online early table of contents: March 16, 2009

Researchers identify LIPG gene mutations that result in elevated HDL-C levels, potentially increasing cardiovascular risk. Meanwhile, a new study suggests intermittent IL-7 therapy may boost CD4+ T cell counts in HIV-infected patients.

Shifting sound to light may lead to better computer chips

Scientists at Lawrence Livermore National Laboratory have developed a new technique that converts high-frequency sound waves into light, allowing for more accurate characterization of semiconductor devices. This method has the potential to improve the manufacturing process for computer chips, LEDs, and transistors.

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.

Where does consciousness come from?

A new paper suggests that four specific processes occur only in conscious perception tasks, offering a unique insight into the neural correlates of consciousness. By studying brain activity of patients with epilepsy, researchers isolated four converging electrophysiological markers characterizing conscious access after word perception.

Paper electrified by copper particles

Researchers at the University of Helsinki have successfully produced nano-sized metallic copper particles that can form electricity-conducting layers and patterns on paper. The particles, protected by polymeric compounds, exhibit good electrical conductivity and make them promising materials for electronics printed on paper.

Stress may cause the brain to become disconnected

New study finds stress-related changes in brain structure may lead to depression-like behavior and PTSD. Researchers propose that restoring hippocampal synapses could provide immediate relief from depressive symptoms.

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.

Hospital infection control strategies for antibiotic-resistant organisms

Effective measures to prevent and control hospital infections from antibiotic-resistant organisms include proper hand hygiene, a clean environment, and early patient identification. Hospital-acquired infections are more common in patients with certain risk factors such as older age, severe disease, or prolonged antibiotic use.

New human genetic link to high levels of 'good' cholesterol

A new study identifies a human genetic link to high levels of 'good' cholesterol, highlighting the role of endothelial lipase enzyme mutations in HDL-C levels. Researchers discovered rare mutated forms of the LIPG gene that significantly increase plasma HDL-C levels.

Acitretin therapy may help reduce nail psoriasis

Low-dose acitretin therapy shows promise in reducing nail psoriasis symptoms, with 25-33% of patients experiencing complete or near-complete clearing. The treatment also demonstrates safety and effectiveness in improving quality of life for patients suffering from severe nail psoriasis.

UH sociologist has different perspective on obesity 'epidemic'

Assistant professor Samantha Kwan argues that the concept of obesity has been overstated and is influenced by cultural beauty messages and health discourses. She claims that women are more closely tied to weight and appearance, and that conforming to norms can bring benefits beyond being healthier.

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.

UV lights decrease infectious TB in hospital room air

Researchers used guinea pigs to test air disinfection methods, finding that UV lights and negative ionizers reduced TB transmission. The study showed a significant decrease in TB infection rates when UV lights and fans were used to ventilate patient room air.

UV light cuts spread of TB

Researchers found that installing UV C lights can reduce TB transmission, including drug-resistant strains. The study showed a 35-45% reduction in infection rates when UVC lights were used.

Historical increase in corn yield -- it's in the roots

A new study published in Crop Science found that the root structure of corn crops plays a key role in the historical yield increases in the US Corn Belt. The research revealed that changes in root systems allow for more efficient water capture and sustain biomass accumulation.

Apple iPhone 17 Pro

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

Glass tables: An overlooked safety threat

A study by Children's Hospital Boston found that half of glass-table injuries could have been prevented or less severe with safety glass. Tempered glass can significantly reduce these types of injuries, which often result in severe lacerations and disfiguring scars.

Researchers develop DNA 'patch' for canine form of muscular dystrophy

Scientists have developed a successful treatment for dogs with Duchenne muscular dystrophy using 'exon skipping' technology, which covers up genetic errors. The treatment involves injecting tailor-made DNA patches into the bloodstream, improving muscle functioning and reducing deterioration in skeletal muscles.

Sea level rise due to global warming poses threat to New York City

A new study finds that the northeastern US coast will experience rapid sea-level rise due to global warming, posing significant threats to New York City and its surrounding areas. The expected rise of up to 8.3 inches could lead to flooding, submersion of low-lying land, and damage to ecosystems.

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.

New organic material may speed Internet access

Researchers have developed an organic material with high optical quality and strong ability to mediate light-light interaction, which can fill the slot between waveguides on integrated optical circuits. This innovation enables fast data processing in all-optical networks, potentially increasing internet speed.

New technology opens gateway to studying HIV-specific neutralizing antibodies

Scientists have developed a new technology to isolate dozens of HIV-specific antibodies from a single individual, allowing for the first time to study natural antibody-mediated HIV neutralization. This breakthrough may prove important in understanding how effective HIV-neutralizing antibodies arise during infection.

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.

Blocking protein may help ease painful nerve condition

Researchers found that blocking dual leucine zipper kinase (DLK) gene may help prevent degeneration of ailing nerve cell branches, a potential trigger for painful neuropathy. The study could lead to the development of a drug to spare cancer patients considerable pain during chemotherapy.

Genetic abnormality may increase risk of blood disorders

Researchers identified a common genetic sequence alteration that enhances the likelihood of acquiring a mutation in a gene linked to certain blood diseases. Patients with myeloproliferative neoplasms have a higher risk of developing another JAK2 mutation due to inherited DNA sequence changes.

Celestron NexStar 8SE Computerized Telescope

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

No hiding place for infecting bacteria

Researchers in Colorado discovered a way to disrupt Pseudomonas aeruginosa biofilm formation by targeting protein and DNA with specific enzymes. This breakthrough could lead to improved treatment strategies for infections caused by this bacteria, which are prevalent in burns, wounds, and cystic fibrosis patients.

A natural approach for HIV vaccine

Researchers at Rockefeller University have identified a diverse team of antibodies in slow-progressing HIV patients whose coordinated pack hunting knocks down the virus. These natural antibodies, produced by six people infected with HIV, show limited neutralizing ability when alone but become effective when combined.

IOF Medal of Achievement awarded to Professor Ego Seeman

Professor Ego Seeman received the IOF Medal of Achievement for his outstanding scientific contributions to osteoporosis research. The award recognizes individuals who have significantly advanced the field of osteoporosis through their original and outstanding work.

GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

Potential pathway for drug intervention

A newly identified molecular pathway directed stem cells to produce glial cells, providing insights into the neurobiology of Down's syndrome and central nervous system disorders. The study found that synaptojanin-1 is essential for glia production, which may lead to the development of drugs that inhibit glial proliferation.

Fermilab experiments constrain Higgs mass

The latest Fermilab analysis excludes a significant fraction of the allowed Higgs mass range, carving out a section between 160 and 170 GeV/c2. This result is based on data from the CDF and DZero collider experiments, which predict that the Higgs particle should have a mass between 114 and 185 GeV/c2.

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.

Seven recommendations from Aarhus to COP15

Aarhus University's conference emphasized the need for integrated policies to mitigate climate change and protect biodiversity. The '7 Aarhus Statements' call for increased agricultural productivity, sustainable energy solutions, and citizen empowerment in addressing climate change.

Caltech students honored for innovative work

Ophir Vermesh, a Caltech PhD chemistry student, has developed an innovative 'blood barcode chip' that promises to revolutionize diagnostic medical testing. The Integrated Blood Barcode Chip (IBBC) can analyze a large panel of blood-based protein biomarkers in just five minutes.

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.

Nanocups brim with potential

Researchers at Rice University have created a light-bending metamaterial using nanocups that can focus light from any direction. This material has potential applications in thermal solar power, superlenses, and invisibility cloaks.

UCSF Medical Center receives $125 million gift to build new hospital

The new medical center will be a 289-bed facility featuring a children's hospital with urgent/emergency care, a women's hospital for cancer care, and adult cancer patients' hospital. The project is expected to create over 1,000 jobs during peak construction and boost local employment.

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.

Traffic exposure may have a triggering effect on heart attack

A German study found that people who have had a heart attack are more than three times as likely to have been in traffic within an hour of their symptoms. Driving or riding in heavy traffic poses an additional risk of eliciting a heart attack, especially for females, elderly males, and those with a history of angina.

Bioabsorbable stents show promise

The study showed an overall 19% loss in luminal diameter at 18 months and an angiographic in-stent late loss of 0.48mm at two years, falling between bare metal and drug eluting stents. Patients did not appear to get any in-stent thrombosis.

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.

Iron is involved in prion disease-associated neuronal demise

A study found that iron homeostasis is disrupted in prion disease-affected brains, leading to a vicious cycle of increased iron uptake. The misfolded protein PrP-scrapie causes this imbalance by altering cellular iron metabolism, paving the way for novel therapeutic strategies.

Is it really only our kidneys that control blood pressure?

A debate between world-leading experts reveals conflicting views on blood pressure control, with some arguing the kidneys play a key role and others pointing to the brain's influence. The discussion highlights major issues in blood pressure control and will guide future studies.

The sweet spot? UF doctors test targets for Parkinson surgery

Researchers found that DBS in either brain target effectively treated motor symptoms, but produced unique effects on mood and mental sharpness. The discovery may impact the selection of DBS patients, especially those with pre-existing memory or cognitive disabilities.

Malaria immunity trigger found for multiple mosquito species

Researchers identified a molecular pathway that triggers an immune response in multiple mosquito species, blocking the development of malaria-causing parasites. By activating transcription factor Rel 2, mosquitoes were able to mount an efficient defense against Plasmodium falciparum.

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.

New method for detecting explosives

Researchers have developed a new technology to detect explosives based on their unique thermal characteristics, enabling trace detection and differentiation between individual explosives. The system uses microfabricated bridges to probe thermal signatures of chemical vapors, allowing for high sensitivity and selectivity.