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Science News Archive 2003


Page 93 of 108

Study shows declines in payment for emergency care

Researchers found payment rates for emergency department charges decreased from 60% to 53% between 1996 and 1998. The privately insured group experienced the largest decline, with payments dropping from 75% to 63% of charges.

Metal ions may play big role in how we sense smells

Scientists propose a new mechanism for passing information through cell membranes via a shuttlecock motion involving metalloproteins. This theory explains why dietary zinc deficiencies lead to a loss of smell and has significant implications for understanding the sense of smell.

Apple iPhone 17 Pro

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

Enzyme controls 'good cholesterol'

Researchers at Baylor College of Medicine found that a specific enzyme is associated with high levels of HDL, which may have both positive and negative effects on cardiovascular health. The study suggests that the enzyme's impact on cholesterol transport to the liver could be beneficial or detrimental.

Fetal death, miscarriage linked to genetic mutation

Research reveals that genetic mutations can lead to structural changes in the placenta, causing fetal death or miscarriage. The study found that embryos with normal placentas but defective Rb genes can still be carried to term, suggesting a critical role of the Rb gene in placental development.

Physicist designs perfect automotive engine

Marlan Scully's new engine design uses a quantum heat bath to produce power, driving a piston with less wasted energy than in the Carnot model. The engine employs lasers, mirrors, and quantum coherence to capture energy from exhaust gases, improving efficiency.

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.

Survey shows benefits of prescription drug advertising, few adverse effects

The survey found that 35% of respondents discussed a health concern with their doctor after seeing an advertised drug. Patients who received a new diagnosis were more likely to have high-priority conditions such as arthritis or diabetes. Additionally, physicians suggested lifestyle changes and quit-smoking advice in over half of visits.

U. of Colorado researchers conduct most sensitive search for new forces

String theory predicts the existence of moduli forces with strengths comparable to gravity, which could be detected on length scales of one-tenth of a millimeter. Researchers used an experiment to search for these forces and found that they are unlikely to exist at distances smaller than previously thought.

Michigan researchers achieve quantum entanglement of three electrons

Researchers at the University of Michigan have successfully achieved quantum entanglement of three electrons using ultrafast laser pulses and coherent techniques. This breakthrough could lead to the development of quantum gates necessary for storing and processing information in practical quantum computers, offering significantly enhan...

Meta Quest 3 512GB

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

Environmental influences play significant role on experiments

A recent study by Dr. Douglas Wahlsten found that environmental influences significantly impact experiment outcomes in mice, including motor coordination and psychological learning tasks. The study suggests that even small factors like odors and experimenter conduct can have a profound effect on behavior.

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.

Rainforests at risk: Where there’s smoke, there’s even more fire

Intentional deforestation in rainforests has gained attention, but unintentional out-of-control fires devour millions of acres of forests, threatening ecosystems. Fire behavior in rainforests differs from temperate forests, with slow-spreading fires having devastating effects on biodiversity and carbon emissions.

American Thoracic Society Journal news tips for March (first issue)

Two new studies highlight the severity of sepsis in young US children, with infants and low-birth-weight babies at highest risk. In contrast, imported malaria cases in European countries pose a growing health threat, while disruptions to ICU patients' sleep patterns remain poorly understood.

Bacterial infections alter allergic response

A recent study suggests that bacterial infections can modify the allergic response, potentially preventing asthma and allergies in children. The research found that mice infected with M. pneumoniae showed a milder reaction to allergens than control mice.

Engineers take new look at strength of industrial glass

Researchers have improved a method for measuring the strength of E-glass and other glass fibers, revealing it may be more than one and a half times stronger than previously recorded measurements. This discovery could help expand applications for glass fibers in industries such as automotive manufacturing.

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.

Breast cancer patients suffer through communication failure

A study by German researchers found nearly half breast cancer patients struggle with incomprehensible or incomplete information, while over half want more opportunities to discuss their treatment. The report emphasizes the importance of improving communication between medical staff and patients.

New contraceptive microbicide in clinical trials

BufferGel, a vaginal microbicide, maintains normal vaginal acidity to kill sperm and germs, preventing pregnancy. The compound is currently in advanced clinical trials for its ability to block HIV transmission.

Software uses in-road detectors to alleviate traffic jams

A new software developed by Ohio State University engineer Benjamin Coifman uses data from in-road detectors to pinpoint traffic congestion and measure travel time. This technology can improve traffic monitoring while minimizing disruptions to drivers, reducing the financial costs of traffic jams.

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.

Canaries in a coal mine?

A comprehensive volume addresses key hypotheses for amphibian declines, including non-native species, UV radiation, and climate change. The study highlights the urgent need for conservation research to address this biodiversity crisis.

Analysis calls surgery effective epilepsy option

A comprehensive review of research findings shows that surgery is a superior treatment option for disabling seizures caused by mesial temporal lobe epilepsy, with better quality of life and reduced medication use. The analysis also found low surgical morbidity and mortality rates, making it an attractive alternative to medication.

Doctors should provide more information about medical errors

Patients want to know if there was an error, how it happened, and what steps will be taken to prevent future occurrences. Doctors often hide or minimize this information due to concerns about lawsuits or patient trust, but this can lead to further upset and mistrust.

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.

NMR - The movie

A team led by Prof. Lucio Frydman has found a way to perform multidimensional NMR with a single scan, significantly speeding up molecular studies and enabling the observation of rapid changes in molecules like protein folding. The new method uses a 'slicing' approach, simultaneously performing measurements on multiple thin slices of a ...

Surveys find chronic conditions a widespread concern

A survey of physicians, adults, and health policymakers reveals widespread concern about chronic condition treatment. Over 90% agree that chronic conditions affect everyone, with most stating the current healthcare system is not meeting needs.

The common cold coughs up $40 billion annual price tag

A new study by U-M researchers found that the common cold leads to significant economic impact, with Americans spending over $2.9 billion on over-the-counter drugs and nearly $1.1 billion on antibiotic prescriptions for symptomatic relief. The total economic cost of cold-related work loss exceeds $20 billion annually.

Scientists find 'stem cells' in human breast cancer

Researchers have identified stem cells in human breast cancer that can form new tumors and are resistant to treatment. The discovery may explain why current treatments for metastatic breast cancer often fail, and could lead to the development of new therapies targeted at these cells.

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.

Hormones, sand & terrorism

Researchers are studying the efficacy of bovine growth hormone in tilapia aquaculture and developing methods for its treatment. Additionally, computer models predict physical impacts of offshore dredging on coastal beaches, and a new publication from Delaware Sea Grant examines port security measures.

Keeping tabs on teens may curb alcohol use and risks

A study of 444 managed-care patients aged 12-17 found that adolescents with consistently monitored parents were less likely to engage in alcohol-risk behaviors. The researchers suggest that monitoring may help reduce risk when adolescents are initially exposed to alcohol, but may be insufficient for high-risk behaviors.

Teasing apart the molecules of life

Researchers devise new method combining optical trapping and single-molecule fluorescence to study DNA structural and mechanical changes. This technique allows scientists to study rare molecules essential for life and disease development.

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.

Tiny computing machine fueled by DNA

A DNA-based computer, award-winning for smallest biological computing device, processes input molecules using spontaneous energy releases to carry out computations without external power. The device contains 15,000 trillion computers performing 330 trillion operations per second with high accuracy.

Variety of casual acquaintances affects success and health

Research by Professor Erickson suggests that having a variety of casual acquaintances can improve job prospects and overall well-being. People with diverse social networks are more likely to feel in control and have access to valuable information, leading to improved health and happiness.

Repeal of estate tax to increase tax burden and widen wealth gap

The repeal of the estate tax may lead to increased wealth inequality, particularly among minority groups, with potential costs for most American families. The tax reduction is expected to decrease philanthropic giving by up to 12 percent annually due to lower inheritance donations not being taxed.

Harder working transistors through automated FPGA compiling

Computer scientists Pedro Diniz and Joonseok Park are developing programming tools to automatically synthesize near-optimal chip architectures for flexible chips. Their techniques enable FPGAs to utilize available transistors more effectively for irregular applications, outperforming current processor architectures in some cases.

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.

Progesterone regulates male behavior toward infants

Researchers found that progesterone receptor knockout mice showed a complete lack of infanticide and exhibited active paternal care, frequently contacting and retrieving pups. In contrast, control mice committed 74% infanticide and displayed less paternal behavior.

Gene variant discovery could save blood in surgery

Researchers found that cardiac surgery patients with the factor V Leiden gene variant lost less blood and required fewer transfusions than those without the mutation. The study suggests a new approach to personalized medicine, tailoring therapies based on individual genetic risk factors.

Argonne researchers create powerful stem cells from blood

Argonne researchers have created powerful stem cells that can morph into various cell types, offering a practical alternative to embryonic stem cells. The breakthrough allows for the production of pluripotent stem cells from adult blood cells, which can potentially treat diseases such as cancer and neurodegenerative disorders.

Evidence acquits Clovis people of ancient killings, archaeologists say

Researchers from the University of Washington and Southern Methodist University conclude that climate change, not humans, was responsible for the extinction of Pleistocene mammals in the New World. The study found no evidence linking Clovis people to the extinctions, contradicting previous 'overkill' hypothesis.

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.

Drug tested for HIV prevention in Baltimore

A 12-week study in Baltimore evaluated nevirapine for HIV prevention in adults at high risk, showing no serious side effects or new infections. The researchers discovered that the three lower doses of nevirapine provided sufficient blood levels to potentially prevent HIV infection.

Smoking, drinking at school may be contagious for teens

A study published in Child Development found that teenagers in high-use schools are three times as likely to follow their peers' smoking behaviors compared to those in low-use schools. The researchers suggest that school-based programs may be effective in reducing tobacco and alcohol use among teens.

The Highland sporting estate: Absentee landlords slow to embrace change

A study by academics at the Universities of Edinburgh and Aberdeen found that half of Scottish sporting estates have been owned for 25 years or less, while two-thirds are run by absentee landowners. Despite new access legislation, many estate owners still oppose public access to their properties.

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.

Overweight is 20 percent among Los Angeles County public school children

According to a recent study, 20% of Los Angeles County public school children are overweight, with Latino children facing the highest prevalence rate. The data also shows that boys are more likely to be overweight than girls, with over 23% of 5th graders and 19% of 7th graders meeting this criteria.

Fluke 87V Industrial Digital Multimeter

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

Greater height associated with increased risk of prostate cancer over age 50

A study by Dr. Michael Gaziano and colleagues found a significant link between greater height and increased risk of prostate cancer in men aged 50 and above, with risks increasing by 32% for those over 72 inches tall. However, no association was found between weight or body mass index and prostate cancer risk.