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Science News Archive August 2001


Page 2 of 8

Two Rensselaer scholars receive Fulbright Student Awards

Rensselaer Polytechnic Institute graduates Dean Nieusma and Elizabeth Press have been awarded prestigious Fulbright student grants. Nieusma will conduct an ethnographic study on technology design practices in Sri Lanka, while Press will work with at-risk students in the Dominican Republic through her 'Video Connections' project.

Age of menopause dictated largely by genes

Research reveals heritability plays a major role in determining the age of menopause, with significant implications for women delaying childbirth beyond 30. Genetic analysis suggests that a woman's store of eggs declines throughout life, triggering menopause.

New dinosaur expert publishes in Nature

Dr. Peter Makovicky's discovery sheds new light on the feeding behavior of ornithomimid dinosaurs, revealing a possible adaptation to filter-feed tiny invertebrates and particles from water and sediment. The find is significant as it provides evidence for the unique beak structure found in two well-preserved specimens.

Celestron NexStar 8SE Computerized Telescope

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

T cell responses in aplastic anemia

Research in aplastic anemia reveals crucial insights into immune system dysfunction and potential therapeutic targets. Patients with aplastic anemia display impaired T cell responses, indicating a critical link between immunodeficiency and disease progression.

Dentists abuzz over cavity-prevention potential of honeybee product

Researchers have discovered a potent anti-cavity agent in Brazilian honeybees' propolis, which cut the cavity rate in rats by about 60 percent. The team is now testing the substance on human volunteers to determine its efficacy as a potential preventative measure for cavities.

New epilepsy gene identified in mice

A team of researchers led by Louis J. Ptacek identified a novel gene, mass1, responsible for audiogenic reflex epilepsy in the Frings mouse strain. The gene was found to be mutated in mice with spontaneous seizures triggered by loud noises.

Laser technique examines movement in nucleus of living cell

Scientists at the University of Illinois have developed a novel laser technique to study chromatin movement in living cells. By measuring the movement of DNA, they found evidence of subdiffusion within the cell nucleus, suggesting that molecular crowding is crucial for life.

Chemists increase conductivity of fuel cell materials

Scientists have developed a new block copolymer structure that increases the conductive monomer without weakening the polymer strength. This breakthrough enables better proton conductivity and lower water uptake compared to random copolymers of similar composition.

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.

DNA vaccination places tumors in double jeopardy

A new DNA-based cancer treatment has shown promise by targeting and eliminating tumor cells. Researchers have discovered that DNA vaccination can place tumors in a state of immune activation, making them more susceptible to attack.

Apple iPhone 17 Pro

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

'Imprinted' gels hold promise for future medical devices

Researchers develop biomimetic gel that binds to glucose molecules, potentially triggering insulin release in diabetics. The gel's sensing mechanism could be incorporated into implantable devices, providing therapy for type one diabetes.

Whale of a Puget Sound problem lures UW researchers

Researchers are collecting data on the behavior of Puget Sound's orca whales using novel tools such as a small radio-controlled catamaran and a fish finder. The study suggests that the whales are declining due to a drop in salmon runs and increasing contamination from PCBs.

Enzyme mimetic compound could reduce complications of diabetes

Researchers have found that an enzyme mimetic compound significantly improves the functioning of blood vessels and nerves in diabetic animal studies, reducing vascular abnormalities and nerve damage. The study suggests a potentially significant new approach for treating and preventing complications associated with diabetes.

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.

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.

Plastic tube may help treat paralysis

A team of researchers has developed a novel treatment for spinal cord injuries using a plastic tube filled with chemicals that promote nerve growth. The tube, designed to mimic the flexibility of the spinal cord, provides a pathway for neurons to grow and potentially reconnect severed nerves.

Researchers explore wood smoke's threat to Great Lakes environment

A new study found that wood smoke is toxic to certain aquatic organisms in the Great Lakes region. The researchers collected particulate matter samples from different areas along the shores of southern Lake Michigan and found concentrations as low as 10-15 milligrams per liter killed 50% of water fleas within a 24-hour exposure.

Fluke 87V Industrial Digital Multimeter

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

From silkworm silk, hybrid materials that surpass original

Researchers at Cornell University have created hybrid materials that mimic and improve on the properties of natural silkworm silk. The new materials, which include extreme flexibility, considerable tensile strength, and water solubility, are poised to be used in a variety of applications including textiles and biomedical fields.

Radio waves stop marine pests dead in their tracks

Researchers found that low-energy radio waves can kill zebra mussels by depleting calcium levels in the water, which are essential for their survival. This method is considered an eco-friendly alternative to traditional chemical treatments or molluscicides, and may be effective in preventing pipe clogging.

Too much soy could lead to kidney stones

Researchers found that store-bought tofu, soy cheese, and soy drinks contain significant levels of oxalate, which can bind with calcium in the kidneys to form kidney stones. The American Dietetic Association recommends limiting oxalate intake to 10 milligrams per serving for patients with a history of kidney stones.

Counting single electrons in a carbon nanotube

Paul McEuen's research group has developed a method to count individual electrons in carbon nanotubes using an atomic force microscope. This breakthrough enables scientists to study the basic physics of electron behavior and advance the field of nanoelectronics.

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.

Chemical found in herbal medicine might complicate pregnancy

Researchers have discovered colchicine, a toxic substance, in the blood of human placentas, raising concerns about its potential impact on pregnancy. Expectant mothers should avoid taking Gingko biloba supplements due to the risk of complications.

Implanted defibrillators: How well do they work?

A new study found that implanted cardioverter defibrillators save the most lives among patients with severe heart disease who suffer from abrupt heart rhythm malfunctions. The device monitors electrical signals and acts within seconds to restore a normal heartbeat, providing life-saving benefits for high-risk patients.

New bar coding system helps decode drug discovery

A new bar coding system developed by Purdue University chemists can quickly identify the most biologically active compounds among thousands of candidates. The method uses standard spectrometers and reduces the laborious process to a few hours, cutting down time needed to identify active compounds to zero.

Penn State researchers investigate alternative diesel fuel

Researchers at Penn State investigated alternative diesel fuel DME, which burns smokeless and produces fewer particulates. The team found that DME can mix completely with diesel fuel but its viscosity may be a key property in developing these fuels.

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.

INEEL develops safe, efficient process for making cleaner-burning fuels

Researchers at INEEL have developed an energy-efficient process to produce alkylate, a high-octane gasoline blend with low environmental pollutants. The new method uses a solid acid catalyst and supercritical fluid solvent to regenerate the deactivated catalyst, increasing its lifespan by 20 times.

Does chromosome 4 hold the secret to human longevity?

A genome-wide study of 308 long-lived individuals revealed a significant correlation between allele sharing on chromosome 4 and longevity. This suggests that the region may contain genes influencing human lifespan, with potential applications in preventing age-associated diseases such as heart disease and Alzheimer's disease.

Fuel cell materials studied for many kinds of environments

Virginia Tech researchers are developing methodology to relate membrane performance to intrinsic polymer properties of microphase separation, water absorption, and proton conductivity. The goal is to produce PEMS that perform well in a wide range of fuel cell environments.

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.

Biocomposites put the plant into the auto plant - and more

Researchers at Michigan State University are developing biocomposites using plant-based materials and sustainable plastic alternatives. These innovative materials have the potential to reduce environmental impact, cost, and production energy while maintaining performance and competitiveness.

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.

Estrogen patch may improve memory for women with Alzheimer's

A new study found that estrogen patches can improve attention and memory skills in women with Alzheimer's disease. The research used estradiol, a type of estrogen shown to have an effect on the brain, and found significant improvements in attention and memory tests.

Virtual laboratory for better quakeproofing

Researchers will use shake tables, centrifuges, and tsunami wave tanks from desktop workstations to conduct experiments. The virtual laboratory, NEESgrid, will connect researchers and facilities across the US, fostering collaboration and accelerating seismic design and hazard mitigation.

NSF funds virtual "collaboratory" for better quakeproofing

The National Science Foundation (NSF) has funded a virtual collaborative research network called NEESgrid. This initiative aims to improve seismic design and hazard mitigation by providing researchers with access to cutting-edge computational tools and experimental equipment, enabling them to share data and resources.

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.

Paychecks & power: Husbands lose some household control when they retire

A new study by University of Washington economists found that wives tend to cut back on spending after their husbands retire, indicating a shift in household bargaining power. This difference is attributed to the fact that wives are typically younger and live longer than husbands, leading them to prioritize saving over consumption.

Catnip repels mosquitoes more effectively than DEET

Researchers found that nepetalactone in catnip is about ten times more effective at repelling mosquitoes than DEET. The compound can be used as an alternative to commercial insect repellents with lower concentrations required, making it a promising discovery for pest control.

Implanted heart devices prone to silent, dangerous staph infection

A study found that pacemakers and ICDs can be infected with Staphylococcus aureus bacteremia without obvious signs, highlighting the need for accurate documentation and removal of devices to prevent serious illness and death. The researchers concluded that removing cardiac devices is essential for patients who develop staph infection.

UCLA neurobiologists identify brain cells that control breathing

Researchers identified a small group of neurons responsible for issuing breathing commands within the preBotzinger Complex. Destroying these neurons in rats resulted in irregular breathing patterns and impaired oxygen control, suggesting they hold underlying causes of breathing disorders.

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.

Researchers building a trap for chromium six

Virginia Tech researchers have created a Selective Ion Trap (SIT) device that can capture and preserve chromium six in the field, enabling faster and more accurate analysis of contaminated groundwater. The device uses a plastic membrane to trap chromium six without allowing it to transform into less reactive forms.

Researchers closer to delivering new insulin pill for diabetics

Researchers at Purdue University have demonstrated a method for delivering insulin orally using microscopic particles that protect the medicine from stomach acid until they can be released in the intestines. The system has been shown to be non-toxic and effective, with the potential to revolutionize treatment for insulin-dependent diab...

Clay reduces permeability of biomedical polymer

Scientists at Penn State have developed a new method to reduce the permeability of biomedical polymers using silicate clay, achieving a significant improvement in air and water resistance. The clay is mixed with the polymer in a common solvent, resulting in a barrier that effectively blocks many paths for air and water migration.

Polymer could allow oral delivery of insulin to diabetics

Researchers have developed a polymer that protects insulin until it reaches the small intestine, where it can be absorbed into the bloodstream. This breakthrough offers potential relief for people with diabetes who struggle with painful injections.

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.

Hypnosis may give false confidence in inaccurate memories

A study suggests that hypnosis doesn't enhance the reliability of memory, but increases confidence in inaccurate memories. Researchers found that students under hypnosis were more reluctant to change their answers when told they might be wrong, indicating a higher level of confidence in their estimates.

Material could lead to self-healing cavities

Researchers have developed a dental composite that can remineralize small cavities and prevent demineralization. The material, containing amorphous calcium phosphate, has potential applications in orthodontic adhesives, dental fillings, root canal therapy, and bone repair.