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Science News for July 19, 2000


Experiments point to new theory of skeletal development

Researchers at University of Wisconsin-Madison found that interdigital tissue determines the uniqueness of each budding embryonic digit, forcing scientists to revise their theories on how cells organize into patterned tissue. The study reveals that surrounding soft tissue provides information about what it will ultimately become.

SourceUniversity of Wisconsin-Madison·JournalScience·DateJul 19, 2000

Neuronal research: The brain needs to feel the beat

A recent study by Dr. Ehud Ahissar finds that tactile information is encoded by both spatial and temporal data, suggesting the brain requires more than spatial patterning. The temporal pathway processes low-frequency stimuli for object location, while the spatial pathway focuses on high-frequency stimuli for object features.

SourceAmerican Committee for the Weizmann Institute of Science·JournalNature·DateJul 19, 2000

Technique shows ratcheting motion of ribosomes

Researchers used three-dimensional cryo-electron microscopy to visualize the ratcheting rotation of ribosomal subunits relative to each other. This motion facilitates translocation of mRNA and tRNA during protein synthesis.

SourceHoward Hughes Medical Institute·JournalNature·DateJul 19, 2000
SAMSUNG T9 Portable SSD 2TB

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Research critically needed for manned space exploration

The report recommends creating a new NASA research program to study the effects of low-gravity environments on various technologies. This includes power generation, propulsion, and life-support systems, which will be crucial for human exploration and development of space.

SourcePurdue University·DateJul 19, 2000

Kidney transplant proposal reduces wait from 24 to 14 months, improves equity for blacks & women

A proposed kidney transplant system assigns priorities based on efficiency and equity points, reducing median waiting time from 24 to 14 months. The new policy increases the overall likelihood of transplantation from 45% to 61% and improves quality-adjusted life expectancy for African-Americans and women.

SourceInstitute for Operations Research and the Management Sciences·JournalOperations Research·DateJul 19, 2000
Apple iPhone 17 Pro

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Gene discovered for primary pulmonary hypertension

Researchers have identified a bone morphogenetic protein receptor II gene mutation as the cause of familial primary pulmonary hypertension, a progressive condition characterized by constriction of blood vessels. The discovery could lead to earlier diagnosis and more effective treatments for both familial and sporadic forms of PPH.

SourceThe American Journal of Human Genetics·JournalAmerican Journal of Human Genetics·DateJul 19, 2000

Purdue researcher solves sorghum mystery

Researchers have found that a tough protein wall in sorghum seeds slows down digestion, but Hamaker's work identified an uncommon variety with improved digestibility. The study could lead to more nutritious sorghum crops for human consumption and animal feed.

SourcePurdue University·JournalProceedings of the National Academy of Sciences·DateJul 19, 2000

American Thoracic Society news tips for July 2000

Researchers found that workers with occupational asthma are at higher risk for hospitalization due to respiratory disease and asthma. Clinically silent acid reflux was also discovered in asthma patients, with a high prevalence rate suggesting a potential common association between the two conditions.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateJul 19, 2000

Computing the connections between proteins

Researchers developed an algorithm to calculate protein association rates and increase affinity by genetically determining protein design. The new system may lead to diverse medicinal applications, including antibody detection.

SourceAmerican Committee for the Weizmann Institute of Science·JournalNature Structural & Molecular Biology·DateJul 19, 2000

Beyond the everlasting lightbulb

Gallium nitride is used to produce very bright light emitting diodes and lasers, and very high power transistors that can operate at high temperatures. The technology has potential applications in mobile phone base stations, surgery, and dentistry, promising huge energy savings and CO2 reductions.

SourceUniversity of Cambridge·DateJul 19, 2000
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.

Evaluating how temperature affects superconductor perfromance becomes more precise

Scientists have successfully visualized the transition of magnetic whirlpools in superconductors from solid to liquid states and back again under temperature variations. This study reveals complex solid-liquid patterns and provides insights into how temperature changes affect superconductor performance.

SourceAmerican Committee for the Weizmann Institute of Science·JournalNature·DateJul 19, 2000