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Science News Archive November 2003


Page 4 of 10

Molecule by molecule, scientists design a new transistor

Researchers at North Carolina State University are developing a nanoscale transistor by assembling molecules and building a functioning electronic switch. The team's pioneering work tackles critical issues in future materials for advanced molecule-based information processing.

Video network research aimed at bolstering national security

Virginia Tech researchers are developing wireless video sensor networks that can provide real-time visual data in critical situations. The goal is to improve the government's ability to prevent, detect, and respond to natural and man-made disasters.

Meta Quest 3 512GB

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

How to hit home runs

A study published in the American Journal of Physics found that the speed of a baseball bat when it hits the ball is the most important factor in hitting a home run. Curve balls are thrown with topspin, which automatically gives them backspin and lift upon impact, making them carry further than fastballs.

Men, women perceive Muslim world differently

A new study reveals that Western perceptions of the Muslim world vary greatly depending on gender. Women tend to perceive Islamic culture as sensual and attractive, while men often view it as uncivilized and barbaric. This disparity highlights a complex interplay between cultural stereotypes and media representation.

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.

Medical experts say cataract and refractive surgeries merging

Cataract surgery is expected to increase due to its major cause of blindness globally. New technologies like implantable miniature telescopes, multifocal IOLs, and accommodating IOLs are being developed to enhance vision, especially for patients with defective irises or macular degeneration.

Researchers describe novel gene mutations associated with Alzheimer disease

Researchers found one presenilin gene mutation associated with variable age of onset AD (from 35 to 85 years old) and two new presenilin gene mutations linked to early onset AD at age 49 to 54 years old. The study confirms the clinical manifestation of PS1 and PS2 gene mutations in Alzheimer's disease is similar to other dementias.

Physics tip sheet #39 - Nov. 17, 2003

Researchers have developed ultra-smooth diamond-like carbon that meets the requirements for ultra-high density magnetic storage devices. Additionally, scientists have used live pond snail nerve cells to implement neural memory on a semiconductor chip, while also studying how air bubbles slow sound waves in water.

Virginia Tech's 'X' officially number 3

The Virginia Tech 'X' supercomputer boasts 10.28 teraflops performance, a remarkable feat considering its construction took just two months and $5.2 million price tag. This achievement ranks X as the third fastest globally, outperforming many high-end supercomputers

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.

UCLA study looks at life after breast cancer

A UCLA study has found that younger women with breast cancer often experience persistent energy loss and psychological difficulties, despite overall good quality of life. The study highlights the need for targeted interventions to support these subgroups.

Snowplow drivers utilizing high-tech simulators to improve skills

A joint project between UDOT, GE Driver Development, and the University of Utah aims to enhance snowplow driver skills using state-of-the-art simulation technology. The training will focus on controlling speed, maintaining tandem position, and communication with other operators in a simulated winter environment.

Annals of Internal Medicine, tip sheet, November 18, 2003

A substantial proportion of U.S. doctors support national health insurance, with 49% backing government-led legislation and 40% opposing it. Mammography screening is found to be cost-effective for women aged 65-80 with no serious health conditions, reducing death at reasonable cost.

Apple iPhone 17 Pro

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

Women and men differ on adopting healthy behaviors

A recent study found that men are more likely than women to adopt healthy behaviors, such as regular exercise and quitting smoking. Women, on the other hand, were less confident in their ability to make these changes. The researchers hope their findings can be used to assist both men and women with adopting healthier lifestyles.

MIT team mines for new materials with a computer

The MIT team uses data mining to search for patterns in a large dataset, reducing the number of structures the computer needs to explore. This allows for more efficient discovery of new materials with desired properties.

Farm worker children under 7 exposed to agricultural and home pesticides

A study found pesticide residues on floors, toys, and hands of children living in farm worker households, posing a significant health risk. The research team detected six agricultural chemicals and 11 residential pesticides in the homes, highlighting the need for further study on this population's exposure to pesticides.

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.

Height sensitive: Rear crash protection devices for heavy trucks

A simulation study by Penn State found that underride guards with diagonal struts increase impact resistance, while a height of 16 inches provides the best balance between risk reduction and vehicle penetration. The study aimed to inform the development of rear crash protection devices for heavy trucks.

Buckwheat may be beneficial for managing diabetes

Researchers found that buckwheat extract can reduce blood glucose concentrations in rats with chemically-induced diabetes by 12-19%, suggesting its potential as a management aid. The active component chiro-inositol may play a role in this effect, although further studies are needed to confirm the results.

Marriage promotion plan must take social science research into account

A marriage promotion plan should prioritize social science research, acknowledging that single-parent families can be beneficial for children with adequate support. Cherlin's research highlights the limited value of traditional programs and the importance of addressing underlying factors such as lower income and mental health issues.

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.

Novel delivery system devised for toxoplasmosis treatment

A new delivery system uses short chains of arginine to ferry drugs across membranes and into cysts of Toxoplasma gondii, a single-celled microorganism that causes toxoplasmosis. The discovery opens the possibility of treating active and latent infections in the eye by applying a lotion containing triclosan.

Apple MacBook Pro 14-inch (M4 Pro)

Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.

New treatment appears effective for rosacea

A new treatment using 15% azelaic acid gel has been shown to be more effective than metronidazole gel in reducing rosacea symptoms. Patients who used the azelaic acid gel experienced a greater reduction in redness and lesion count compared to those who used metronidazole gel.

Stay south of thunderstorm paths, says Purdue scientist

A Purdue University earth scientist has discovered that damaging winds within thunderstorms can form on the north side of a storm's path, rather than at its apex. This finding could lead to more accurate storm warnings and improved public safety.

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.

Psoriasis may increase risk for certain cancers

A study published in Archives of Dermatology found that people with psoriasis are at a higher risk for developing certain types of cancers, including lymphoma. The research suggests an almost three-fold increased rate of lymphoma in patients with psoriasis compared to those without the condition.

Two worms are better than one

The C. briggsae genome sequence enhances biologists' ability to mine C. elegans for biological insights, revealing new genes and functional elements. The study also highlights the rapid evolution of C. elegans and C. briggsae genomes compared to mammals.

Financial problems linked to depression symptoms in breast cancer patients

A study by Ohio State University found that financial stress was a significant contributor to depression in breast cancer patients, even stronger than grief from a loved one. Researchers analyzed data from 210 women with stage II or III breast cancer and found a strong link between money-related stress and depressive symptoms.

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.

Debate on payments to potential kidney donors: Yes or no?

The demand for kidney transplants is soaring due to type 2 diabetes and hypertension, but the number of available donors is low. Experts at the American Society of Nephrology conference discuss the pros and cons of paid donations, weighing the need to increase the transplant pool against ethical concerns.

Interracial interactions are cognitively demanding

A study at Dartmouth College suggests that harboring racial bias makes negotiating interracial interactions more cognitively demanding. The researchers found that brain activity in response to black faces predicted performance on cognitive tasks after actual interactions.

Non-directed kidney donations

Non-directed kidney donations have the potential to save thousands of lives, but raise important ethical considerations. Transplant centers are developing policies to evaluate and allocate these kidneys, addressing issues like allocation and donor expenses.

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.

Social mothers appear to be better mothers

Researchers found that more socially involved female baboons had higher reproductive success rates and lower infant mortality. This contradicts the long-held assumption that social relationships are only beneficial for mothers.

Brittle fracture mechanism breaks the sound barrier

Scientists discover conditions for cracks to propagate supersonically in brittle solids, challenging classical theories on fracture speed. Hyperelasticity governs dynamic fracture under extreme deformation, with a characteristic length scale near the crack tip.

Genes control severity of heart failure, study finds

Researchers at Duke University Medical Center have discovered two genetic regions linked to heart function and survival in patients with heart failure. The study found that genetic variations on chromosomes 13, 18, 2, and 4 affect cardiac function and survival, providing potential targets for new therapies.

JCI Table of Contents, November 14, 2003

Two independent studies successfully selected and expanded gene-corrected human stem cells using a novel drug-resistance gene. This breakthrough may be useful in human clinical trials of gene therapy for bone marrow transplantation settings. Additionally, upregulation of Irs2 promotes beta cell growth, survival, and insulin secretion, ...

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.

Research on spleen cells could yield potential cure for Type 1 diabetes

A new study by the Society for Women's Health Research has found that spleen cells can rapidly regrow adult islet cells without embryonic stem cells. This breakthrough discovery opens up a new approach to treating Type 1 diabetes, which develops when the immune system attacks insulin-producing islet cells.

New program interrogates gene pathways

The GRAM program combines data sets on gene regulatory pathways and messenger RNA levels to determine causal relationships between regulators and genes. By processing these data sets together, researchers can identify regulators that switch genes on or off across the entire genome.

'Scientific American 50' recognizes NCAR scientists

Researchers from NCAR's Research Applications Program developed the NCAR Efficient Spectral Processing Algorithm (NESPA) to aid pilots in navigating turbulent storms. The algorithm achieved an impressive accuracy rate of over 80%, detecting turbulence encounters with very few false positives.

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.

Epilepsy at the movies

A study analyzing 62 movies across four continents found that epilepsy is often stereotyped, with males shown as violent and females as exotic and vulnerable. The dramatic potential of seizures may contribute to these portrayals.

Naked mole-rats bare pain relief clues

Researchers found naked mole-rats naturally lack Substance P, a neurotransmitter that sends pain signals to the central nervous system. Introducing Substance P restored pain signaling in these animals, sparking hope for new therapies to treat fibromyalgia.

Study sheds light on why some infants may develop permanent heart damage

A new study suggests that maternal circulating cells can migrate to the heart of infants, potentially causing a damaging immune response. The research, led by Dr. Anne Stevens, found that these cells were present at higher levels in the hearts of babies with neonatal lupus syndrome, which can cause severe heart damage.

Celestron NexStar 8SE Computerized Telescope

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

Stem cell gene therapy: selecting only the best

Researchers successfully transferred and expressed MGMT into relatively few hematopoietic stem cells using a lentivirus vector, enabling gene-corrected cells to repopulate the hematopoietic compartment. This breakthrough has significant implications for human clinical trials of gene therapy in bone marrow transplantation settings.

Study finds subtle brain damage in some HIV patients on drug therapy

Researchers discovered subtle brain damage in HIV patients taking antiretroviral drugs, despite no apparent symptoms or viral suppression. The study used brainwave recordings, neuropsychological testing, and MRI scans to compare 39 HIV-positive individuals with 35 control subjects.