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Science News Archive 2009


Page 239 of 277

Researchers generate functional neurons from somatic cells

Scientists successfully generated functionally mature motor neurons from induced pluripotent stem cells, paving the way for new treatments of amyotrophic lateral sclerosis and spinal cord injury. This study offers a promising alternative to embryo-derived cells for regenerative medicine.

Apple iPhone 17 Pro

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

Living wills have an impact on pre-hospital lifesaving care

A study found significant confusion among pre-hospital healthcare providers regarding living wills and DNR orders, which can compromise lifesaving care. Implementing clearly defined code status designations within living wills can clarify this confusion and ensure patient safety.

Stroke treated significantly faster and just as safely by medical residents

A study by neurology residents at Barnes-Jewish Hospital showed that they can safely administer clot-busting enzyme tPA to stroke patients, reducing door-to-needle times from 81 minutes to 60 minutes. With proper training and feedback, residents can make complex decisions without increasing the risk of brain bleeding.

Sexual lyrics in popular songs linked to early sexual experiences

A study found that teenagers who preferred popular songs with degrading sexual references were more likely to engage in intercourse or pre-coital activities. High exposure to such lyrics was independently associated with higher levels of sexual behavior among young adolescents.

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.

UCR scientists identify stem-cell genes that help form plant organs

Researchers at UCR identified all the genes expressed in plant stem cells, providing a global view of which genes are expressed and where within the shoot apical meristem. This discovery can help scientists develop better varieties of crops and understand why stem cells give rise to specialized cells.

Widespread stress among vets

A study of 1060 vets in north Germany found that psychosocial stress increased with working hours, leading to demoralization and substance abuse. The research suggests a complex relationship between stress, tobacco consumption, problem drinking, and drug use.

Updated formula measures kidney function more accurately

A new calculation eliminates obstacles in measuring kidney function in children, relying on various blood tests that can be performed in a clinical setting. The study's findings suggest an accurate estimate is crucial to properly treat children with acute and chronic kidney problems.

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.

Money may not buy happiness but neither does poverty

Experts gather to discuss how economic growth affects well-being and whether poverty or wealth guarantees happiness. Research highlights the negative effects of unemployment, while stability in work improves health and well-being.

Diabetes a risk factor for postpartum depression

A new study published in JAMA found that low-income women with diabetes have a more than 50% increased risk of experiencing postpartum depression. The research suggests that healthcare facilities and clinicians should pay attention to managing mental health concerns in women with diabetes during pregnancy and the postpartum period.

Women with diabetes before or during pregnancy at higher risk of depression

Low-income pregnant women and new mothers with diabetes have nearly twice the risk of experiencing depression during and after pregnancy than women without diabetes. The study, published in JAMA, found that women with any form of diabetes were significantly more likely to experience some indication of depression during pregnancy or pos...

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.

An angry heart can lead to sudden death, Yale researchers find

Yale researchers discover a link between anger and sudden cardiac arrests, which claim 400,000 lives annually. The study found that patients with T-wave alternans, a measure of electrical instability, were more likely to experience arrhythmias after a mental stress test.

Also in the Feb. 24 JNCI

Researchers found that gene expression profiles differed between tumor samples from patients who had taken vitamin E, selenium, or both supplements compared to those on placebo. The study provides insight into the effects of preoperative supplement use on prostate cancer gene expression, a potential area for future investigation.

In battle against teacher turnover, MSU mentoring program proves effective

A new study finds that MSU's mentoring program improved teacher effectiveness in the Lansing district, leading to a significant reduction in teacher turnover. The program involves freeing up veteran teachers to advise beginning peers throughout the school year, providing training and support to help them succeed.

Spinal repair technique may offer hope to vertebral fracture patients

A randomised trial found that kyphoplasty treatment significantly improved quality of life, function, mobility, and pain in patients with acute vertebral fractures compared to non-surgical management. The procedure was also safe and effective, with no significant differences in adverse events between the two groups.

Fluke 87V Industrial Digital Multimeter

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

Bizarre bird behavior predicted by game theory

Researchers used game theory to explain juvenile ravens' unusual foraging behavior, finding that it occurs when searching individually is less efficient. The study suggests that abundant food and social advancement drive the adoption of 'gang' foraging, potentially improving their social status.

Jordan's fossil water source has high radiation levels

Researchers at Duke University discovered that ancient groundwater in Jordan's Disi aquifer contains up to 20 times the safe level of radiation, threatening long-term human consumption. To make it safe, experts recommend diluting or treating the water with technologies like ion exchange and desalination.

Stunning finding: Compounds protect against cerebral palsy

Researchers developed compounds that inhibit an enzyme producing nitric oxide, a neurotransmitter that can damage brain tissue. The treatment was effective in preventing cerebral palsy in animal models, suggesting a potential preventive strategy for humans in the future.

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.

Diagnosis of 'war-zone disorder' to help stroke victims

Researchers discovered that post-traumatic stress disorder impacts stroke patients' recovery and ability to resume normal life, even with minor brain damage. Early testing using simple questionnaires could lead to significant improvements in subarachnoid hemorrhage patient outcomes.

Saving wheat crops worldwide

Researchers at CSIRO Australia have discovered a key to overcoming three major cereal diseases, providing long-lasting protection against multiple pathogens. The Lr34 gene sequence offers broad-spectrum control of leaf rust, stripe rust, and powdery mildew, with tests showing constant protection for over 80 years.

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

Researchers block immune cell rush behind deadly sepsis

A new study suggests blocking neutrophil migration using rhAPC could eliminate bleeding risk from sepsis treatment. The results recommend existing drugs as potential new treatments against sepsis, increasing the pace of new treatments in the clinic.

Gestures lend a hand in learning mathematics

A study published in Psychological Science reveals that hand movements can aid in creating new math concepts and aid learning. Fourth-grade students who repeated a specific gesture during a lesson solved more problems correctly than those who only spoke the words or partially correct gestures.

Anti-cancer gene discovered: Perspective for therapy

Researchers at VIB have identified a key gene that suppresses cancer across species, including humans. The Atonal gene regulates the final step of cell specialization, which is lost in cancer cells, offering new hope for therapy.

Growing danger from post-birth bleeding

A recent study found that post-partum haemorrhage is a significant threat to new mothers in high-income countries, resulting in severe outcomes including infertility and death. The authors recommend increased access to active management of the third stage of labour to reduce PPH rates.

Great Lake's sinkholes host exotic ecosystems

Researchers have discovered unique ecosystems in Great Lake Huron's sinkholes, featuring brilliant purple mats of cyanobacteria and pallid, floating pony-tails of microbial life in dense, salty water. The unusual environments are similar to those found at the bottoms of permanently ice-covered lakes in Antarctica.

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.

Commercial yeasts upgraded with an enzyme for biofuel production

Researchers at Goethe University Frankfurt have discovered an enzyme that enables yeast cells to ferment xylose into ethanol, a waste sugar in the cellulosic ethanol production process. This single-step conversion technology has the potential to increase biofuel production efficiency and reduce competition with food and feed production.

Treating drug-addicted doctors is good medicine

A national-level analysis confirms that Physician Health Programs, which couple referral to treatment with rapid responses to noncompliance, are successful in helping doctors stay drug-free. The study found that over three-quarters of enrolled doctors stayed sober for five years and were able to return to medical practice.

Lovely 'snowfakes' mimic nature, advance science

Researchers have developed a computer model that replicates the growth of snow crystals in rich three-dimensional detail. The model, which can generate all types of snowflakes, is significant because it helps scientists better understand and predict how snowflakes form in clouds.

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.

Anger management: The key to staying heart healthy?

A study published by the American College of Cardiology found that changes brought on by anger can predict future arrhythmias in patients with ICDs. Patients who experienced higher levels of anger-induced TWA were more likely to have arrhythmias requiring ICD termination.

Genetic discovery could lead to advances in dental treatment

Researchers at Oregon State University have identified the gene Ctip2 as controlling tooth enamel production, a significant step towards repairing damaged enamel and preventing cavities. This discovery could lead to new approaches in dental health, including using tooth stem cells to stimulate enamel growth.

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.

The honeymoon's over: Consumers overestimate enjoyment of products

A study found that people tend to overestimate their long-term enjoyment of products, leading them to choose cheaper options with fewer features. This is because consumers who think about how long they will use a product and anticipate decreased enjoyment are less likely to buy premium items.

2008 was Earth's coolest year since 2000

The NASA Goddard Institute for Space Studies found that 2008 was the coolest year on record since 2000, with most of the world experiencing near-normal or warmer temperatures. A strong La Niña event in the Pacific Ocean contributed to the cooling effect.

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.

Chili peppers help to unravel the mechanism of pain

Researchers discovered that capsaicin, found in chili peppers, triggers a desensitization process in pain receptors, allowing them to adapt to painful stimuli. This adaptive response enables the receptor to continuously respond to varying stimuli, leading to a shift in responsiveness threshold.

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.

Lowering your cholesterol may decrease your risk of cancer

Research suggests that lowering cholesterol levels can block the growth of prostate tumors and reduce cancer incidence. Ezetimibe, a cholesterol-lowering drug, has been shown to inhibit tumor angiogenesis, promoting less aggressive tumors.

Shredding corn silage could produce more ethanol at less cost

A Purdue University researcher has discovered a way to increase access to cellulose in plant cell walls by shredding corn stover instead of chopping. This results in better access to the main component needed for making ethanol. Shredding corn stalks also increases the surface area of the material and reduces energy consumption.

Social patents

Experts explore using social networking tools to identify prior art in patent applications, streamlining the process for the US Patent and Trademark Office. The Peer-to-Patent pilot project demonstrates a promising approach to reducing backlog, with similar initiatives being investigated by UK and European offices.

Immune system 'atlas' will speed detection of kidney transplant

A new immune-system 'atlas' will improve doctors' ability to monitor transplanted organs and shed light on the mechanisms of gradual, cumulative kidney malfunction after transplant. The atlas allows for inexpensive, noninvasive blood tests that show whether a donated kidney is infected or accruing chronic injuries.

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.

In U of I study, kids learn to handle emotional responses to siblings

A University of Illinois researcher has developed a program that helps children manage their emotions and interact positively with their siblings. The study found that the program improved sibling relationship quality, reduced parental involvement, and increased children's ability to regulate their emotions.

Are women more generous? New study sheds light on donation behavior

A new study in the Journal of Consumer Research found that donations are driven by overlap between donors and recipients, rather than cause-worthiness. Women tend to donate more to victims of natural disasters like Hurricane Katrina, while men donate more to victims of terrorist attacks.

No longer a gray area: Our hair bleaches itself as we grow older

A team of European scientists discovered that going gray is caused by a massive build-up of hydrogen peroxide, which blocks the normal synthesis of melanin, our hair's natural pigment. This research provides an important first step in understanding the root cause of gray hair.

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.

MIT rocket aims for cheaper nudges in space

MIT scientists have developed a new rocket called the Mini-Helicon Plasma Thruster, which runs on inexpensive gases and could slash fuel consumption by 10 times that of conventional systems. The propulsion system uses electrical energy to accelerate propellant, providing thrust for spacecraft maneuvers.