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Science News Archive April 2013


Page 10 of 32

Rare condition implicated in pregnant women infected with malaria

Research finds an association between a rare pregnancy condition called chorangiosis and full-blown malaria in pregnant women. The study suggests that active malarial infection enhances blood vessel growth in the placenta, potentially leading to complications like low birth weight.

Annals of Internal Medicine tip sheet for April 23, 2013

The USPSTF reviewed evidence on suicide screening and treatment for adults and adolescents, finding that primary care-feasible screening tools can identify adults at increased risk for suicide but have limited ability to detect risk in adolescents. Treatment with psychotherapy reduced the risk of suicide attempts by 32% in high-risk ad...

Apple iPhone 17 Pro

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

Physicists find right (and left) solution for on-chip optics

A Harvard-led team of researchers has created a new type of nanoscale device that converts optical signals into waves traveling along a metal surface. The device can recognize specific polarized light and direct it in one direction or another, opening the door to precise manipulation of light at subwavelength scales.

Bugs produce diesel on demand

A team from the University of Exeter has developed a method to make bacteria produce diesel on demand, using special strains of E. coli. The resulting diesel is almost identical to conventional diesel fuel and can be used with current supplies without modification.

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.

Health impact assessments prove critical public health tool

A recent study by the Colorado School of Public Health found that health impact assessments can identify potential health risks associated with natural gas development. The assessment identified health effects such as headaches and respiratory issues in a western Colorado town, highlighting the importance of considering public health i...

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.

Diagnostic errors more common, costly and harmful than treatment mistakes

Diagnostic errors accounted for the largest fraction of malpractice claims and the highest total payments, resulting in severe patient harm and death or disability almost twice as often as other error categories. The majority of diagnostic errors were missed diagnoses, with outpatient care being more common than inpatient care.

Using black holes to measure the universe's rate of expansion

A team of researchers has developed a method using black holes to measure the universe's rate of expansion with high accuracy. The method uses radiation emitted by material surrounding black holes, allowing for distance measurements of billions of light years and providing insights into the universe's past.

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.

Mammograms reveal response to common cancer drug

Researchers at Karolinska Institutet developed a method to assess tamoxifen's effect on breast cancer, using mammograms. Women showing a 20% reduction in breast density have a 50% reduced risk of dying from breast cancer over 15 years.

Genetic circuit allows both individual freedom, collective good

Researchers discovered a genetic circuit in bacteria that enables individual freedom while ensuring the collective good. The circuit allows each bacterium to weigh its decisions based on stress levels and peer signals, striking a balance between selflessness and selfishness.

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.

Green spaces may boost well-being for city slickers

A new study published in Psychological Science found that individuals living in greener areas reported less mental distress and higher life satisfaction. The association held even after accounting for other factors that contribute to life satisfaction.

Cutting back on sleep harms blood vessel function and breathing control

Researchers found that partial sleep deprivation led to less healthy vascular function and impaired breathing control. After a short period of normal sleep, vascular function returned to baseline, suggesting an adaptive response. The study suggests a mechanism behind the connection between sleep loss and cardiovascular disease.

Stanford researchers develop new method to assess options for heart-disease surgery

A new method to predict which patients with heart disease benefit more from surgery versus angioplasty has been developed by Stanford researchers. The study, published in Annals of Internal Medicine, found that individual characteristics such as gender, age, and diabetes history significantly impact the effectiveness of these procedures.

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.

3 new studies reveal added fiber's impact on various health indices

Researchers found improved laxation with minimal gastrointestinal tolerance issues after consuming 20g of added fibre per day. Soluble fibre dextrin also promoted satiety for up to 8.5 hours after consumption. Additionally, PROMITOR Soluble Corn Fibre increased calcium absorption in adolescents by 12%.

Facial dog bites in children may require repeated plastic surgery

A study published in Journal of Craniofacial Surgery found that facial dog bites in children often result in permanent scars, requiring repeated revision surgeries. Most bites are classified as 'provoked' and occur when the child is playing or interacting with the dog.

Regional insights set latest study of climate history apart

A comprehensive study of global temperature change over the past 1,000 to 2,000 years found pronounced regional differences. The research, led by Northern Arizona University's Darrell Kaufman, provides insight into climate variability and its impact on societies and ecosystems.

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.

Ecology, economy and management of an agro-industrial Amazon frontier

The study highlights the importance of sustainable land management in reducing deforestation and preserving ecosystems. Agricultural intensification, combined with policies and incentives, can minimize environmental degradation and secure the health of forests and streams in the Amazon and other tropical regions.

Bacteria may contribute to premature births, STDs

Research at Washington University School of Medicine suggests that Gardnerella vaginalis bacteria is likely the cause of bacterial vaginosis, a condition linked to preterm birth and increased risk of sexually transmitted diseases. The condition affects one in every three women and often does not cause significant symptoms.

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.

Researchers discover mushrooms can provide as much vitamin D as supplements

Researchers from Boston University School of Medicine discovered that eating mushrooms containing Vitamin D2 can increase and maintain vitamin D levels comparable to taking supplements. The study found that ingesting mushroom powder containing Vitamin D2 was as effective in raising and maintaining healthy adults' vitamin D status.

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.

Stem cell transplant restores memory, learning in mice

Researchers at University of Wisconsin-Madison successfully transplanted human embryonic stem cells into mouse brains to repair damaged neural circuits. The study demonstrates the potential for stem cell therapy to treat neurological disorders such as Alzheimer's and depression.

New immune cells hint at eczema cause

Researchers have identified a new type of immune cell in the skin that plays a role in fighting parasitic invaders and could be linked to eczema. The discovery sheds light on the causes of allergic skin diseases and offers new hope for treating hundreds of millions of people worldwide.

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.

Starting with 2 health behaviors may be better than 1

The study found that delivering physical activity and dietary interventions simultaneously may result in the most positive sustained outcomes across two important health behaviors. Participants who received simultaneous advice successfully increased both their dietary and physical activity levels to national recommendations by 12 months.

Study: Low-dose aspirin stymies proliferation of 2 breast cancer lines

A study found that low-dose aspirin slowed the growth of two breast cancer lines in lab tests and reduced tumor growth in mice. The compound also inhibited tumor cells from spreading and enhanced the effect of tamoxifen, a common drug therapy for hormone-receptor positive breast cancer.

Green spaces may boost wellbeing for city dwellers

Research finds that individuals living in urban areas with green space report less mental distress and higher life satisfaction. The effect is significant even after accounting for income, employment, marital status, physical health, and housing type.

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.

Structure of cell signaling molecule suggests general on-off switch

Researchers at Duke University Medical Center discovered a three-dimensional image of beta-arrestin1, a protein that regulates GPCRs, revealing a striking difference in its active and inactive states. This finding suggests the presence of a general molecular mechanism controlling the activation of beta-arrestin1.

Genetics defines a distinct liver disease

A large-scale genetic study has associated nine new genetic regions with primary sclerosing cholangitis (PSC), a rare autoimmune liver disease. The study definitively proves PSC is a distinct disease, despite its genetic relationship to inflammatory bowel disease (IBD).

Social stress and the inflamed brain

A study by Dr. Susan K. Wood found that social stress can lead to inflammatory changes in the brain, increasing vulnerability to depression and heart disease. The research identified specific genes and proteins involved in this process, shedding light on potential targets for treatment.

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.

A scientist on a mission

Antibiotic overuse and misuse are creating conditions for the emergence of superbugs in border communities like Eagle Pass, Texas. Collaborating with officials to develop an outreach model to mitigate antimicrobial resistance, scientist Subburaj Kannan emphasizes the need for government action and public awareness.

2 days of staging as effective as 4 for high-altitude climbs

Researchers found that 2 days of staging at a moderate altitude is as effective as 4 days in preventing acute mountain sickness, allowing soldiers to ascend safer and quicker. The study used male soldiers ascending Pike's Peak in Colorado, with 73% showing symptoms of AMS on direct ascent versus 30-40% on staged ascents.

A check on tension

Researchers Arshad Desai and Christopher Campbell found that Aurora B kinase congregates on microtubules instead of the centromere, ensuring required tension is achieved on chromosomes. This discovery challenges prevailing model for how dividing cells monitor chromosome distribution.

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.