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Science News Archive September 2011


Page 25 of 29

Protecting adolescent girls from unwanted unprotected sex

A new study found that 46% of African-American adolescent girls report unprotected sex due to partner abuse, highlighting the relationship between HIV and partner abuse. Developing clinic-centered interventions can inform more tailored prevention methods to address condom coercion and silence in relationships.

Apple iPhone 17 Pro

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

Songs about sex – how they affect kids

Researchers analyzed Billboard Hot 100 song lyrics from 1959 to 2009, finding a significant increase in sexually explicit references over time. The study suggests degrading music can negatively impact teens' self-worth and lead to poor body image, depression, and substance abuse.

Remembering the past negatively worsens health

A study by the University of Granada found that people's attitude towards their past experiences significantly influences their perception of health and quality of life. Individuals with a negative view of the past tend to have worse physical and mental health indicators, including depression, anxiety, and reduced physical strength.

Mass. Eye and Ear awarded largest NIH grant in hospital’s history

The Massachusetts Eye and Ear Infirmary has received a $11 million grant from the National Institute of Allergy and Infectious Disease to coordinate a Harvard-wide project on antibiotic resistance. The goal is to develop new antibiotics to treat highly resistant infections caused by staph and other related bacteria.

When it comes to speaking out, cells wait their turn

Cells can switch between sender and receiver mode, inhibiting their own signals while allowing them to receive information from other cells. This mechanism could lead to the development of cancer drugs that target specific cell communications, potentially stopping uncontrollable proliferation.

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.

Neutrinos: Ghostly particles with unstable egos

Physicists confirm neutrino mass exists, even if infinitesimal, after decades of discussion. Experimental evidence includes neutrino oscillations, which suggest mass is necessary for such transformations.

NASA spacecraft images offer sharper views of Apollo landing sites

The mission has provided sharper views of the lunar surface, including the trails left by astronauts and the tracks laid down by the lunar rover. The higher resolution allows scientists to retrace the astronauts' steps with greater clarity to see where they took lunar samples.

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.

Screening for HPV persistence and cervical cancer risk

A new study found that persistent HPV infections are associated with a higher risk of cervical cancer. The researchers suggest that re-testing every two years for HPV-positive women can provide useful guidance on the duration of infection and its risk.

UC Davis neurosurgeons use adult stem cells to grow neck vertebrae

Researchers at UC Davis Health System used bone marrow-derived adult stem cells to promote bone tissue growth after cervical disc removal. The procedure, part of a nationwide clinical trial, aims to relieve chronic, debilitating pain by eliminating friction between vertebrae and nerve compression.

Mayo Clinic study finds widespread medical resident burnout and debt

A recent Mayo Clinic study found that 51.5% of US internal medicine residents reported burnout symptoms, with those owing over $200,000 in debt experiencing lower quality of life and test scores. The study also revealed a link between resident distress and lower-quality patient care.

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.

Our galaxy might hold thousands of ticking 'time bombs'

Astronomers propose a new way to search for supernova precursors by studying the spin of white dwarfs. This process could lead to a time delay of up to a billion years before the explosion, allowing for detection by upcoming surveys.

Medical homes linked to better health, school performance

Researchers found a strong association between high-quality medical care and improved health and school engagement in undocumented children. Children with regular access to healthcare reported better academic performance and missed fewer school days due to illness or injury.

Rice breakthrough could double wireless capacity with no new towers

Researchers at Rice University have made a breakthrough that could allow wireless phone companies to double throughput on their networks without adding a single cell tower. The new 'full-duplex' technology uses an extra antenna and computing tricks to enable simultaneous transmission and reception on the same frequency.

Fatal fungal infections resist newest class of drugs

Fungi such as Candida albicans are resisting the latest antifungal drugs due to their ability to alter cell wall structure. The use of echinocandins, which target beta-glucan enzyme, is being re-evaluated in light of this resistance.

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.

Chemotherapy can impair speech

Research from the University of Gothenburg found that chemotherapy can cause significant language difficulties in cancer patients, including trouble with sentence completion and word order. The study used a unique questionnaire to assess everyday life difficulties, resulting in an 80% response rate and a long follow-up period.

Simulation an effective way to train health-care professionals

Mayo Clinic researchers analyzed over 600 studies on simulation-based training, finding it consistently better than no instruction for various learners and clinical topics. Simulation allows for practice without harming patients, repeated training to become more proficient, and structured learning for effective learning outcomes.

In more socially engaging environment, white fat turns to brown

Researchers found that a socially engaging environment can convert white fat to brown fat, leading to increased energy expenditure and weight loss. The study suggests that social isolation may contribute to obesity, highlighting the importance of social engagement in maintaining a healthy metabolism.

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.

Looking for the roots of racial bias in delivery of health care

A study by Johns Hopkins Medicine found that medical students' unconscious biases towards race and social class do not directly affect their treatment decisions. Despite this, the researchers argue that training and experience may be reinforcing negative stereotypes, highlighting the need for interventions to address racial bias in hea...

Innovative nanoparticle purification system uses magnetic fields

Researchers at Penn State University have invented a method using magnetic fields to purify hybrid nanoparticles, which are composed of two or more kinds of materials. This technique will help improve drug-delivery systems, drug-targeting technologies, medical-imaging technologies, and electronic information-storage devices.

New TB vaccine approach shows promise in mice

Researchers developed a genetically modified Mycobacterium smegmatis vaccine that induces strong immune response in mice, protecting them from TB infection. The vaccine effectively lowers TB bacteria levels by 1,000 times compared to the current BCG vaccine.

GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

Digital cameras open new view of America's West

A USDA aerial photography survey found that the invasive leafy spurge weed is displacing native mountain big sagebrush seedlings in Idaho. The survey used high-resolution digital cameras to sample large areas of the western US.

Innovation is step toward digital graphene transistors

Purdue researchers develop new type of graphene inverter that works at room temperature, enabling transistors to amplify signals and control switching. The breakthrough could lead to the creation of ultrafast devices with simplified circuits for broader digital applications.

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.

Misunderstanding surrounds HIV vaccine trials

A new University of Toronto study highlights the need for improved communication with high-risk communities about HIV vaccine trials. Researchers found that misinformation, distrust, and misunderstanding persist, affecting participants' willingness to participate.

A more progressive tax system makes people happier

A new study of 54 nations found that more progressive taxation is associated with greater personal well-being and life satisfaction. The researchers analyzed data from the Gallup Organization and found that citizens in nations with more progressive taxes reported having more satisfying experiences and fewer discomfiting ones.

The future of drugs is all in the family

Researchers from National University of Singapore and Tsinghua University found that 88% of nature-derived drugs come from previously known drug-producing families. The study suggests focusing on these pre-existing families to discover new drugs, leveraging knowledge of clustered distribution patterns like oil fields.

Financial consequences of illness devastating and understudied

A recent study argues that existing financial protection measures are insufficient and advocates for new indicators to identify those unable to afford healthcare. The findings highlight the need for improved measurement of financial protection in health systems to better support vulnerable populations.

Peer pressure? It's hardwired into our brains

A recent USC study found that the brain prioritizes winning in a social setting over individual success, leading to increased risky and competitive behavior. This phenomenon is linked to the activation of the striatum and medial prefrontal cortex regions of the brain.

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.

Quality problems more likely in offshore drug plants, study finds

A new study suggests that offshore manufacturing plants, even those run by U.S. pharmaceutical firms, are more likely to have quality problems than those on the mainland US. The researchers found that cultural differences, primarily language and values, were the primary cause of these differences.

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.

NASA satellites 'eyes' changes in Hurricane Katia

NASA satellites have been monitoring Hurricane Katia's transition, capturing clear images of its cloud patterns and spiral shape characteristic of strong storms. The storm has undergone eyewall replacement, with a double-eyewall formation indicating it is likely to maintain major hurricane status.

OHSU researchers eye newer, safer birth control method

Researchers at OHSU's ONPRC have developed a new contraceptive that directly targets the key enzymes responsible for releasing an egg from the ovary. This approach aims to prevent pregnancy while minimizing systemic effects and improving effectiveness compared to existing hormonal birth control methods.

Cheap drugs could save thousands of lives –- in Sweden alone

A global study reveals that cheap, preventive medicines are underused to prevent heart attacks and strokes. The study found that women take these medicines less frequently than men, and low-income countries have the lowest usage rates. Generic preparations with expired patents should be prescribed more widely to patients at risk.

Meta Quest 3 512GB

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

USGS research frontiers on fish at the American Fisheries Society Conference

The USGS presented several studies on various fish-related topics, including the benefits of habitat restoration for juvenile salmon and the importance of targeting younger silver carp to control their population. Climate change may impact smallmouth bass populations, with warmer temperatures affecting growth in southern climates.

Ultrasound improves stem cell transplants

Researchers from Lund University have developed a method using ultrasound to improve the quality of transplanted blood stem cells. This improvement could lead to better treatment outcomes and reduced risk of graft-versus-host disease and infections.

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.

A 'jumping gene's' preferred targets may influence genome evolution

Researchers have discovered that certain transposon elements can coordinate their movement with DNA replication, allowing them to spread more rapidly through genomes. P elements, one such transposon, tend to insert themselves near the beginning of genes and at regions functioning as starting sites or origins for DNA duplication.

Time to address stimulant abuse on our campuses

The use of illicit stimulants among university students is a growing concern, with potential side effects including irregular heartbeat, overdose, depression, addiction, and death. Universities must engage in focused health education campaigns to debunk myths and expose risks, and address the root cause of stimulant use.

Fluke 87V Industrial Digital Multimeter

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