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Science News Archive September 1999


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Novel neural net recognizes spoken words better than human listeners

Researchers at USC created a machine system that recognizes spoken words better than humans, with the ability to distinguish words in vast amounts of random noise. The novel neural network architecture mimics the biological system's temporal dimension, allowing it to process information structured in time.

Treatments reduce strep-triggered symptoms of OCD and tics in some children

Researchers found that plasma exchange and IVIG relieve neuropsychiatric symptoms in children with tics and obsessive-compulsive disorder, with symptom improvements lasting up to a year. The study suggests these treatments may be effective for a subgroup of children with strep-triggered disorders, but not all cases.

Molecular muscle motor found to move backwards

Researchers have discovered that myosin VI moves backwards on actin filaments, toward the minus end, challenging current understanding of protein movement. This finding has significant implications for our understanding of cellular assembly and maintenance, particularly in structures with single-orientation actin filaments.

Apple iPhone 17 Pro

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

High brain centres teach lower brain to adapt to injury

Researchers discovered that higher brain centers act as training wheels for the lower brain by providing input to adapt to damaged sensory pathways. This feedback loop enables the lower brain to reorganize and form new neural pathways.

Researchers discover hemoglobin's enzymatic nature

Scientists have identified a biochemical link between ancient bacteria and modern mammalian hemoglobins, revealing that nematode worms use their strong hemoglobin to destroy oxygen. This unique function may also inspire the development of new cancer therapies by starving tumors of oxygen.

NICHD funded researchers discover gene for Rett syndrome

Researchers have identified the gene responsible for Rett syndrome, a condition that gradually robs girls of their language, mental functioning, and ability to interact with others. The discovery has immediate implications for diagnosis and treatment.

First brain cancer surgeries using new space-age probe are successful

Surgeons have successfully performed two operations using a new LED-based probe to treat brain cancer, with promising results. The treatment, called Photodynamic Therapy, involves activating light-sensitive drugs with long wavelengths of light, destroying tumors while sparing surrounding tissues.

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.

New alternative medicine center opens at OHSU

The Oregon Center for Complementary and Alternative Medicine in Neurological Disorders (ORCCAMIND) has been established at OHSU with a $7.8 million NIH grant. Initial research projects focus on herbal medicines, yoga, and other alternative therapies for Alzheimer's disease and multiple sclerosis.

Study: foreign-trained physicians vital to poor, under-served patients

A new study found that nearly a quarter of community health centers rely on foreign-trained physicians, who are often willing to accept lower salaries. If these doctors were no longer available, up to 57% of positions for foreign-trained doctors and almost 16% of all staff positions could go unfilled.

Meta Quest 3 512GB

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Drinking study shows many young men at risk

A University of Toronto study shows that nearly a third of young men in Ontario drink excessively, putting their health at risk. The study found that 30% of men under 45 and 25% overall exceed daily and weekly drinking guidelines.

New research method reveals high-density information storage in the brain

A new research method reveals that information can be stored on the surface of neurons with very high spatial density, similar to a CD-ROM. The method allows precise control over neurotransmitter release and discovered that modifications are highly restricted, enabling single synapses to store information separately.

SAMSUNG T9 Portable SSD 2TB

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Engineer proposes new building code for quake-stricken Turkey

Mete Sozen, a structural engineer from Purdue University, has proposed a simplified alternative engineering method for designing earthquake-resistant buildings in Turkey. The five-page method is simpler than the current 75-page code and could be more easily understood and applied by engineers.

Genetic engineering changes the behavioral and hormonal response to stress

Researchers genetically altered mice adrenoceptor 2C expression to study stress response. The results showed differential behavioral responses in treated vs. untreated mice, as well as changes in plasma corticosterone levels and brain dopamine/serotonin content. This study highlights the importance of single-gene mutations in respondin...

Social factors play key role in teenage health

A study by Dr. Elizabeth Goodman found a significant association between socioeconomic status and depressive symptoms, obesity, and poorer ratings of overall health among teenagers. The research examined data from over 15,000 surveys and found that lower socioeconomic status was linked to higher rates of these chronic illnesses.

Davis Instruments Vantage Pro2 Weather Station

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Keep taking the medicine, diabetes research warns

A recent study found that nearly half of people with type 2 diabetes stop taking their oral anti-diabetic drugs (OADs), leading to a higher risk of complications such as blindness, amputation, and cardiovascular problems. The study revealed that individuals who discontinued treatment were almost three times more likely to die than thos...

Scientists take the heat out of age old question

Researchers at University College London have developed a novel approach to determine the melting temperature of iron at high pressures, allowing them to estimate the Earth's core temperature. This breakthrough has significant implications for understanding earthquakes, volcanoes, and the Earth's magnetic field.

1999 AAPS Annual Meeting abstracts debut online

The American Association of Pharmaceutical Scientists has premiered an online database of the abstracts to be presented at the upcoming annual meeting. The database includes all invited and contributed paper abstracts, with a unique personal itinerary feature allowing attendees to plan their meetings.

Watershed responses to forest practices studied

A new watershed model, GISWA, can help predict the effects of forest practices on watersheds and wildlife habitat. The model simulates hydrologic conditions at thousands of locations within a single watershed to provide a detailed representation of water movement.

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.

Robots to the rescue

A robotic caterpillar, Moccasin II, has been developed to navigate through gas, water, and sewerage pipes in buildings damaged by earthquakes or explosions. The robot can successfully navigate multiple 90-degree bends and is equipped with lights, a video camera, and microphones to detect survivors.

Rainforest birds keep dying out long after logging stops

New research in Conservation Biology found that fragmented rainforests can lose biodiversity for a century. The study, led by Thomas Brooks, suggests that conserving the most-recently isolated fragments will save the greatest number of species from extinction.

Pollution makes crustaceans adapt rapidly

Biologists at Cornell University and Max Planck Institute found that Daphnia crustaceans can evolve quickly to cope with polluted water. The study showed that these tiny crustaceans adapted to handle less nutritious food, becoming a natural control for toxic cyanobacteria in Lake Constance.

CalDigit TS4 Thunderbolt 4 Dock

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UMass climate researchers returning to Bolivian mountaintops

Researchers will collect snow samples from Illimani and Sajama mountains to understand the impact of El Nino and La Nina on precipitation patterns. The team's goal is to analyze climate conditions over the past two years using sophisticated chemical analyses of snow samples.

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.

Mass extinction of freshwater species in North America

A study by Anthony Ricciardi and Joseph Rasmussen reveals freshwater species are dying out five times faster than terrestrial species. At this rate, many at-risk species will disappear within the next century, with non-native species and dams identified as major threats.

Say goodbye to wires in the office

A new device called the chaos mirror is invented to improve infrared networking technology in crowded offices. It uses a box enclosing seven highly reflective surfaces to split narrow incoming beams into a widely spread array of reflected beams, vastly increasing the chances of beam finding its target.

Are reintroduced wolves eating too many baby moose?

Researchers found moose pregnancy rates fell from 90% in 1966 to 75% today, indicating limited food availability. The abundance of willows limits the number of moose, not wolves and grizzly bears, according to the study.

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.

Biologist calls 30% of African primates 'living dead'

New research predicts that up to half of African primate species could go extinct within decades due to habitat loss. The study suggests an 'extinction debt' has been incurred as a result of widespread deforestation in Africa.

Stressed-out mice offer clues to depression, anxiety, anorexia

Scientists created a new mouse strain with a genetic deletion that affects stress hormones and behavior. The mice exhibit anxiety-like behavior consistently, not just in response to external stimuli, offering insights into the role of CRH-binding protein in depression and anxiety disorders.

Celestron NexStar 8SE Computerized Telescope

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

HIV's deep pocket may reveal vulnerability

A team of researchers has identified several chemical compounds that can prevent HIV from fusing with human cells, a crucial step in the viral infection process. By targeting the gp41 protein, these compounds may provide a new avenue for treating HIV and potentially other viruses.

Cancer gene is normally a 'carpenter' in the cell

Researchers at Duke University discovered that cancer gene c-Abl triggers the internal framework of cells, building nerve cells and aiding movement. Altering levels of growth factors and Src protein revealed c-Abl's normal function.

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.

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.

Study finds problems with buying drugs on the Internet

A study of 46 Internet sites selling prescription drugs found that only five revealed their locations, while nine sites sold medications without a physician's prescription. The researchers also found that online doctor consultations cost more than in-person visits, and some popular drugs were sold at higher prices online.

Perchlorate found in fertilizers

A study has identified perchlorate in fertilizers, a chemical compound suspected of adverse health effects. The findings suggest that fertilizers could be a source for perchlorate accumulation in the food chain, posing risks to human health and ecosystems.

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.

Study spotlights uniqueness of human brain

A groundbreaking study reveals differences in the human brain's neural architecture compared to apes and monkeys. Researchers found a uniquely human feature in the magnocellular pathway of the primary visual cortex, which may help understand diseases like dyslexia.

Patient empowerment could improve diabetes care

Studies suggest that involving individuals with diabetes in their care can improve quality of life and reduce complications. The results highlight the importance of patient education and empowering patients to make informed treatment choices.

Elderly heart attack patients fare well with managed care

A study by Harvard Medical School found that elderly patients with acute myocardial infarction (AMI) covered by non-profit health maintenance organizations (HMOs) received higher use of lifesaving therapy and emergency transportation compared to those with fee-for-service insurance. HMOs improved access to timely urgent care, particula...