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Science News Archive April 2015


Page 31 of 36

Defect found in pancreatic cells could lead to new diabetes treatment

Researchers at Columbia University Irving Medical Center have found a defect in pancreatic cells that can lead to high blood sugar levels and impaired glucose balance. An experimental drug called Rycal has been shown to stop the leaky channels and normalize glucose levels in mouse models.

Gut immune system identified as a new and effective target in treating diabetes

Research suggests that targeting the gut immune system with a commonly used anti-inflammatory drug may be an effective way to treat insulin resistance and lower blood sugar levels in humans. The study found that mice fed a high-fat diet had larger amounts of pro-inflammatory immune cells in their bowels, leading to insulin resistance.

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.

Why daring to compare online prices pays off offline

A Concordia University study found that shoppers use online prices as reference points when making purchases offline. Offline retailers should focus on prices associated with highly rated online retailers to increase their impact on in-store price evaluations.

Apple iPhone 17 Pro

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

Enhancing mechanism of capsaicin-evoked pain sensation

Researchers found that capsaicin-evoked burning pain sensation is caused by sequential activation of TRPV1 and anoctamin 1, leading to further depolarization. Anoctamin 1 activation increases pain sensation in mice, while chemical blockade provides relief from pain induced by TRPV1 activation.

Study points the way toward producing rubber from lettuce

Prickly lettuce has potential as a new cash crop providing raw material for rubber production, according to Washington State University scientists. They identified genetic markers linked to rubber production in the plant's genetic code, opening the way for breeding desired traits and developing a sustainable source of natural rubber.

Oregon study: Consequences of driving drunk are paying off

A University of Oregon economist's study found that reducing punishments for drivers above the legal blood alcohol content (BAC) threshold results in lower recidivism rates. The study showed a 17% reduction in repeat offenses for BAC levels above .08 and an additional 9% reduction for levels above .15.

Meta Quest 3 512GB

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

Stress and obesity: Your family can make you fat

A new study links long-term exposure to family stressors like family disruption, financial stress, and maternal poor health to increased risk of obesity in adolescents. Findings suggest female and male adolescents respond differently to stress, highlighting the need for tailored social services in obesity prevention programs.

Cancer drug target also essential for blood cell recovery

Researchers at Walter and Eliza Hall Institute discovered that cancer drug target MCL-1 is crucial for normal blood cell production, but its depletion impairs recovery of the blood cell system after cancer therapy-induced blood cell loss. This finding has important implications for potential cancer treatments involving MCL-1 inhibitors.

Researchers create first metal-free catalyst for rechargeable zinc-air batteries

Case Western Reserve University researchers have developed a metal-free bifunctional electrocatalyst that performs as well or better than most metal and metal oxide electrodes in zinc-air batteries. The carbon-based catalyst works efficiently in both oxygen reduction and oxygen evolution reactions, making the battery rechargeable.

How many organisms do live in this aquatic habitat?

A new measurement method using droplet digital polymerase chain reaction (ddPCR) estimates the distribution of aquatic animals in water by quantifying target DNA copies. This technique offers higher accuracy than existing methods, especially at low environmental DNA concentrations.

New advancements in 3-D designs for neural tissue engineering

Researchers have developed new 3D designs for reconstructing damaged neural tissue using stem cells grown on nanofiber scaffolding within a supportive hydrogel. The approach guides neural connections, acting like a roadmap for cell growth and function.

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.

Common cancers hijack powerhouses of cells

Many cancers, including pancreatic cancer, enslave and deform mitochondria to create an environment conducive to tumor growth. Researchers found that blocking this process may lead to the growth of tumors.

Better sensors for medical imaging, contraband detection

Researchers at MIT have created a new magnetic-field detector that is significantly more efficient than its predecessors. The device uses synthetic diamonds with nitrogen vacancies to measure magnetic fields and has the potential to be used in medical imaging, contraband detection, and geological exploration.

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.

Pulling the strings of our genetic puppetmasters

Duke researchers have developed a new method to precisely control gene activity by chemically manipulating proteins that package DNA. This technology allows for the activation of specific gene promoters and enhancers, which could provide a new avenue for gene therapies and guiding stem cell differentiation.

Breastfeeding women and sex: Higher sex drive or relationship management?

A study of 155 breastfeeding women in Manila found that they experienced an increase in sexual activity after childbirth, which may be a strategy to maintain relationships and invest in future children. This suggests that women's priorities shift from mating efforts to parenting efforts during the postpartum period.

Can cancer vaccines prolong survival?

Therapeutic anti-cancer vaccines have been associated with a statistically significant increase in patient survival, but rarely have a noticeable effect on tumor growth. The study suggests that overall survival, rather than progression-free survival, should be the gold standard for evaluating cancer vaccine efficacy.

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.

Neighborhood stigma affects online transactions, NYU researchers find

A study by NYU researchers found that neighborhood stigma significantly impacts economic transactions, with buyers perceiving sellers from disadvantaged neighborhoods as less trustworthy and responsive. The study, which analyzed responses to online ads in 12 cities, revealed a 16% lower response rate for disadvantaged neighborhoods com...

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.

NASA sees Tropical Cyclone 22S 'come together right now'

Tropical Cyclone 22S, a tropical storm developing in the Southern Indian Ocean, showed organized clouds and a band of thunderstorms on April 6, 2015. The storm was centered near 14.9 south latitude and 61.4 east longitude, with maximum sustained winds of 45 knots (51.7 mph/83.3 kph) at that time.

New report links frequency of diet soda use to waist increases

An observational study of San Antonio men and women aged 65+ found that frequent diet soda consumption was associated with significant increases in waist circumference over 9 years. The risk of metabolic disease, diabetes, heart attack, stroke, cancer, and mortality also rose proportionally.

Fluke 87V Industrial Digital Multimeter

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

Extraversion may be less common than we think

A study by Daniel C. Feiler and Adam M. Kleinbaum found a 'network extraversion bias' in the emerging social networks of MBA students, where extraverts are over-represented. The effect is more pronounced in the networks of socially outgoing people, suggesting that introverts may be better socially calibrated.

Study: Near-death brain signaling accelerates demise of the heart

A new laboratory study by the University of Michigan Medical School reveals that near-death brain activity can destabilize heart function and accelerate cardiac demise. The study suggests that blocking brain-heart connections during cardiac arrest may improve survival chances for patients.

ROIS collaboration on Data Centric Science

The ROIS collaboration aims to promote data centric science through big data utilization. The partnership with CSC, DSI, and EUDAT will enhance research collaboration and access to funding for data-driven research.

Producing strawberries in high-pH soil at high elevations

Researchers recommend specific strawberry cultivars for challenging conditions in the US Southwest. The study evaluated 16 varieties and found that 'Wendy', 'Brunswick', and 'Honeoye' are tolerant to high-pH soil, while others like 'Allstar' and 'Chandler' are sensitive.

The brain game

Researchers found that quicker learners use different brain regions and have more interconnected networks, while slower learners rely on more individualized brain activity. The study provides insight into the neural mechanisms behind skill learning and practice.

Celestron NexStar 8SE Computerized Telescope

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

Computers that mimic the function of the brain

A team of Northwestern researchers has made a breakthrough in memristor technology, creating a three-terminal device that can be widely tunable. This innovation brings us closer to brain-like computing, which could revolutionize the way we process information.

Study of vehicle emissons will aid urban sustainability efforts

A new nationwide data inventory, DARTE, provides a baseline for local efforts to limit carbon dioxide levels by tracking vehicle emissions across the US. The study highlights the need for accurate information to improve greenhouse gas control efforts in cities and suburbs.

Mysterious desert fairy circles share pattern with skin cells

Scientists at OIST Graduate University have identified a pattern in desert fairy circles that closely resembles the distribution of skin cells. This similarity spans vastly different scales, from microscopic cells to large-scale desert landscapes. The findings suggest that patterns may exist across disparate systems, enabling new appro...

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.

Women smokers concerned about weight are less likely to try to quit

A study published in Tobacco Control found that women who believe smoking helps them manage their weight are less swayed by anti-smoking policies than other female smokers. The researchers suggest that policymakers should consider addressing concerns about weight gain to enhance the effectiveness of quitting smoking initiatives.

Sleep problems prevalent for military members

A new RAND Corporation study reveals persistent sleep problems among service members, negatively affecting mental health and operational readiness. The study recommends education and awareness programs to shift cultural attitudes and develop policies to promote healthy sleep habits.

Sound separates cancer cells from blood samples

Researchers developed an acoustic-based microfluidic device to separate circulating cancer cells from blood samples with high accuracy. The device uses surface acoustic waves to push CTCs out of the fluid stream, making it a potentially game-changing technology for non-invasive diagnostics and treatment monitoring.

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.

Team determines structure of toxin in respiratory infections

The molecular structure of the cytotoxin from Mycoplasma pneumoniae has been determined, which could lead to the development of effective drugs and vaccines to neutralize its injurious effects. The discovery is a significant breakthrough in understanding respiratory infections such as asthma.

Providers have mixed feelings about prescribing HIV prevention

A national survey of US healthcare providers found that fewer than half were 'very likely' to prescribe PrEP to high-risk patients. Concerns included daily pill regimen, regular follow-up care, effectiveness, and side effects. Despite strong evidence supporting PrEP use, cost remains a significant issue.

Device extracts rare tumor cells using sound

Researchers developed a microfluidic chip that uses sound waves to separate circulating tumor cells from white blood cells, achieving a throughput rate up to 20 times faster than prior attempts. The device preserves the integrity of separated CTCs and offers a label-free approach without chemically altering the cells.

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.

Western Canada to lose 70 percent of glaciers by 2100

Seventy percent of glacier ice in British Columbia and Alberta could disappear by the end of the century, impacting energy production, water supply, and freshwater ecosystems. The Rocky Mountains are expected to lose up to 90% of its glaciers, while coastal mountains will retain only half their volume.

New research complicates seismic hazard for British Columbia, Alaska region

A recent study on the 2012 Mw 7.8 Haida Gwaii and 2013 Mw 7.5 Craig earthquakes reveals a confirmed subduction zone in the Haida Gwaii area, complicating seismic hazard assessments for British Columbia and Alaska. The research also found that the mainshock altered stress fields in the rupture zone, leading to normal faulting behavior.

Study finds cow milk is added to breast milk and sold to parents online

A study published in Pediatrics found that 10% of online breast milk samples contained added cow's milk, a concerning discovery for parents relying on these sources. The research team also identified bacterial and viral contamination in over 75% of purchased samples, highlighting the risks associated with buying human milk online.

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.

News from Annals of Internal Medicine April 7, 2015

Researchers found that Weight Watchers and Jenny Craig are the most effective commercial weight-loss programs for long-term weight loss. In contrast, physical therapy was as effective as surgery in alleviating symptoms of lumber spinal stenosis. Leading internists also advocate for a more thoughtful approach to cardiopulmonary resuscit...

Regulating poinsettia's height

Researchers found that controlled water deficit can effectively regulate stem elongation in poinsettias, reducing the need for plant growth retardants. The study also showed that prolonged water deficit application reduced bract area, highlighting the importance of avoiding this practice during periods of bract elongation.