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Science News Archive September 2011 - Page 25


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.

SourceUniversity of Pennsylvania School of Nursing·JournalAdvances in Nursing Science·DateSep 6, 2011

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.

SourceSpringer·JournalSexuality & Culture·DateSep 6, 2011
Apple iPhone 17 Pro

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

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.

SourceSpanish Foundation for Science and Technology·JournalUniversitas Psychologica·DateSep 6, 2011

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.

SourceMass Eye and Ear·DateSep 6, 2011

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.

SourceAmerican Friends of Tel Aviv University·JournalPLOS Computational Biology·DateSep 6, 2011
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.

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.

SourceTechnical University of Munich (TUM)·JournalPhysical Review D·DateSep 6, 2011

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.

SourceNASA/Goddard Space Flight Center·DateSep 6, 2011

Integrated health care delivery system and electronic health records support medication adherence

A Kaiser Permanente study found that patients in integrated healthcare systems with electronic health records and linked pharmacies are more likely to collect their new prescriptions for diabetes, cholesterol, and high blood pressure medications. The study revealed primary non-adherence rates of 7% for blood pressure medication, 11% fo...

SourceKaiser Permanente·JournalJournal of General Internal Medicine·DateSep 6, 2011
Fluke 87V Industrial Digital Multimeter

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

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.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateSep 6, 2011

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.

SourceUniversity of California - Davis Health·DateSep 6, 2011
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.

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.

SourceCenter for Astrophysics | Harvard & Smithsonian·JournalThe Astrophysical Journal Letters·DateSep 6, 2011

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.

SourceUniversity of Southern California·JournalMedical Care·DateSep 6, 2011
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.

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.

SourceRice University·DateSep 6, 2011

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.

SourceMicrobiology Society·DateSep 6, 2011

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.

SourceUniversity of Gothenburg·JournalActa Oncologica·DateSep 6, 2011

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.

SourceMayo Clinic·JournalJAMA·DateSep 6, 2011
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.

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.

SourceCell Press·JournalCell Metabolism·DateSep 6, 2011

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...

SourceJohns Hopkins Medicine·JournalJAMA·DateSep 6, 2011

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.

SourcePenn State·DateSep 6, 2011
Sky-Watcher EQ6-R Pro Equatorial Mount

Sky-Watcher EQ6-R Pro Equatorial Mount provides precise tracking capacity for deep-sky imaging rigs during long astrophotography sessions.

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.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalNature Medicine·DateSep 6, 2011

Metabolic state of brain cancer stem cells significantly different than the cancer cells they create

Researchers at UCLA found that brain cancer stem cells can change their metabolic state from glycolysis to oxidative phosphorylation, allowing them to evade treatment. This unique ability makes glioma stem cells resistant to conventional treatments, highlighting the need for new therapies targeting these cells specifically.

SourceUniversity of California - Los Angeles Health Sciences·JournalProceedings of the National Academy of Sciences·DateSep 6, 2011

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.

SourceUnited States Department of Agriculture - Research, Education and Economics·JournalNative Plants Journal·DateSep 6, 2011
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.

Interventional radiologists: Learn about peripheral arterial disease and get moving

A recent study in the Journal of Vascular and Interventional Radiology found that exercise plays a crucial role in recovery from peripheral arterial disease after treatment. Interventions such as angioplasty and stenting can also help restore blood flow, improving walking ability and overall quality of life.

SourceSociety of Interventional Radiology·JournalJournal of Vascular and Interventional Radiology·DateSep 6, 2011

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.

SourcePurdue University·DateSep 6, 2011

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.

SourceUniversity of Toronto·JournalAmerican Journal of Public Health·DateSep 6, 2011

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.

SourceAssociation for Psychological Science·JournalPsychological Science·DateSep 6, 2011
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.

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.

SourceNational University of Singapore·JournalProceedings of the National Academy of Sciences·DateSep 6, 2011

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.

SourcePLOS·JournalPLOS Medicine·DateSep 6, 2011

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.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateSep 6, 2011

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.

SourceOhio State University·JournalJournal of Operations Management·DateSep 6, 2011
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.

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.

SourceNASA/Goddard Space Flight Center·DateSep 6, 2011

UCLA study shows loss of key estrogen regulator may lead to metabolic syndrome and atherosclerosis

A UCLA study reveals that the loss of a critical protein regulating estrogen and immune activity can lead to metabolic syndrome, characterized by Type 2 diabetes, atherosclerosis, and cancer. The research found that this protein's absence promotes increased fat accumulation, inflammation, and glucose intolerance in female mice.

SourceUniversity of California - Los Angeles Health Sciences·JournalProceedings of the National Academy of Sciences·DateSep 6, 2011
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.

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.

SourceOregon Health & Science University·JournalEndocrinology·DateSep 6, 2011

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.

SourceUniversity of Gothenburg·JournalThe Lancet·DateSep 6, 2011

Lifetime 'dose' of excess weight linked to risk of diabetes, according to U-M study

A new University of Michigan Health System study found that the degree and duration of obesity in adolescents and young adults significantly increase the risk of developing type 2 diabetes. The study also revealed that black and Hispanic individuals are more susceptible to diabetes for a given amount of excess weight over time.

SourceMichigan Medicine - University of Michigan·JournalArchives of Pediatrics and Adolescent Medicine·DateSep 6, 2011
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.

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.

SourceU.S. Geological Survey·DateSep 6, 2011

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.

SourceLund University·JournalPLOS ONE·DateSep 6, 2011

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.

SourceCarnegie Institution for Science·JournalProceedings of the National Academy of Sciences·DateSep 6, 2011
Celestron NexStar 8SE Computerized Telescope

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

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.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateSep 6, 2011