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Science News for September 4, 2011


Crowd-sourcing the E. coli O104:H4 outbreak

Crowd-sourcing efforts identified key disease-causing genes in the E. coli O104:H4 strain, which carries a high number of genes involved in disease. The outbreak, affecting over 16 countries, has been linked to contaminated beansprouts and resulted in thousands of cases and multiple deaths.

SourceMicrobiology Society·DateSep 4, 2011

A whole new light on graphene metamaterials

Scientists at Berkeley Lab have demonstrated a microscale device made of graphene that can tune its response to light at terahertz frequencies with exquisite precision. The device uses an array of graphene ribbons to control collective oscillations of electrons, or plasmons, which absorb different frequencies of light.

SourceDOE/Lawrence Berkeley National Laboratory·JournalNature Nanotechnology·DateSep 4, 2011
Apple iPhone 17 Pro

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Potential vaccine readies immune system to kill tuberculosis in mice

A potential vaccine against tuberculosis has been found to completely eliminate the disease-causing bacteria from infected tissues in mice. The vaccine uses a modified strain of bacteria that triggers a specific immune response, providing longer protection and bactericidal immunity.

SourceHoward Hughes Medical Institute·JournalNature Medicine·DateSep 4, 2011

Novel magnetic, superconducting material opens new possibilities in electronics

Scientists have created a new class of materials that exhibit both magnetic and superconducting properties, revolutionizing the field of electronics. By sandwiching two nonmagnetic insulators together, researchers discovered a material where the interface between the two has both magnetic and superconducting regions.

SourceDOE/SLAC National Accelerator Laboratory·JournalNature Physics·DateSep 4, 2011

Fast, cheap, and accurate: Detecting CO2 with a fluorescent twist

Researchers at Kyoto University have designed an inexpensive new material capable of quick and accurate detection of carbon dioxide gas. The compound gives off variable degrees of visible light in correspondence with different gas concentrations, enabling the development of easy-to-use monitoring devices.

SourceInstitute for Integrated Cell-Material Sciences, Kyoto University·JournalNature Materials·DateSep 4, 2011

Scripps Research scientists produce first stem cells from endangered species

Researchers at Scripps Research Institute have successfully produced stem cells from two endangered species, a drill and the northern white rhinoceros. These cells could enable lifesaving medical therapies or offer the potential to preserve or expand genetic diversity by offering new reproduction possibilities.

SourceScripps Research Institute·JournalNature Methods·DateSep 4, 2011
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.

New mutations in leukemia: Researchers found mechanism that can help design future therapies

A group of mutations in the interleukin-7 receptor gene have been identified in T-cell acute lymphoblastic leukemia patients, leading to uncontrolled cell proliferation. Researchers found that certain pharmaceutical drugs already in clinical use can eliminate these cells, providing a potential therapeutic approach against leukemia.

SourceInstituto de Medicina Molecular·JournalNature Genetics·DateSep 4, 2011

Yale researchers solve mystery of disappearing bird digit

Researchers have solved the debate on which bird digits exist, finding that precursor cells in pb can form a thumb despite pa cells dying off during development. The study, published in Nature, reveals new insights into embryonic development and vertebrate evolution.

SourceYale University·JournalNature·DateSep 4, 2011

TB vaccine candidate shows early promise

A new TB vaccine candidate has shown promising results in animal studies, inducing a robust T-cell response that could protect against the disease. The vaccine, developed using a closely related species of bacteria, proved both potent and safe, with vaccinated mice living up to 135 days versus 54 days for control mice.

SourceAlbert Einstein College of Medicine·JournalNature·DateSep 4, 2011
SAMSUNG T9 Portable SSD 2TB

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The emotional brain in youth

Bipolar disorder affects 3% of the general population, with significant functional limitations and high rates of psychiatric hospitalization in children and adolescents. The diagnostic criteria for bipolar I disorder in adolescents include mania, euphoria, and irritability, while mixed episodes are common in this age group.

SourceEuropean College of Neuropsychopharmacology·DateSep 4, 2011

World's smallest electric motor made from a single molecule

Chemists at Tufts University have developed a single molecule electric motor, measuring 1 nanometer across and controlled by electricity. The motor's operation depends on temperatures around 5 Kelvin, which could lead to real-world applications in sensing devices and medical equipment.

SourceTufts University·JournalNature Nanotechnology·DateSep 4, 2011

Scripps Research scientists establish new class of anti-diabetic compound

Researchers have discovered a new class of anti-diabetic compounds that target a unique molecular switch, potentially offering fewer side effects than existing drugs. The new compound, SR1664, blocks Cdk5's action on PPARG and shows improved blood sugar levels without weight gain or fluid retention.

SourceScripps Research Institute·JournalNature·DateSep 4, 2011

Gene defect that predisposes people to leukemia discovered

Researchers found a genetic defect in the GATA2 gene that predisposes people to acute myeloid leukemia and myelodysplasia. The mutation affects the production of healthy white blood cells, increasing the risk of severe infections.

SourceUniversity of Washington·JournalNature Genetics·DateSep 4, 2011
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.