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Results of the first year of data collection by the SAM (Stratospheric Aerosol Measurement)
II satellite system are presented. Almost 10,000 profiles of stratospheric aerosol
extinction in the Arctic and Antarctic regions are used to construct ...
The abundance of samarium-152 in the Santa Clara iron meteorite is found to be 108
× 107 atoms per gram. This quantity, if attributed to fission of a superheavy element with
atomic number 107 to 109, limits the amount of superheavy elements in the ...
A number of features have been identified as absorption lines of hydrogen cyanide
in infrared spectra of stratospheric absorption obtained from a high-altitude aircraft.
Column amounts of stratospheric hydrogen cyanide have been derived from ...
Special Issue Article
The Spectroscopy of Very Cold Gases
The technique of supersonic free jet spectroscopy can be used to study the structure
and dynamics of molecules which have been cooled to far below their boiling points
but which remain in the gas phase. Cooling of the internal degrees of freedom, ...
Thijs Kuiken faced a moral dilemma after reviewing a Lancet manuscript showing the new coronavirus spread between humans
Researchers ask Census Bureau for “noisy” file to measure the impact of differential privacy
Would establish a “mission control” to coordinate responses to future outbreaks
Although individual neurons are the basic unit of the nervous system, they process
information by working together in neuronal circuits with specific patterns of synaptic
connectivity. Here, I review common circuit motifs and architectural plans used in
...
Oncogenes only transform cells under certain cellular contexts, a phenomenon called
oncogenic competence. Using a combination of a human pluripotent stem cell–derived
cancer model along with zebrafish transgenesis, we demonstrate that the transforming
...
We design and lithographically fabricate two-dimensional preassembled colloidal linkages
of custom-shaped, discrete, mobile microscale tiles that are sterically coupled together
by lock-and-key sub-tile features, yielding hinge-like bonds between separate ...
Accumulation of iron in seeds is essential for both plant reproduction and human nutrition.
Transport of iron to seeds requires the chelator nicotianamine (NA) to prevent its
precipitation in the plant vascular tissues. However, how NA is transported to ...
Microglia have been implicated in neuroinflammatory diseases, including multiple sclerosis
and its animal model experimental autoimmune encephalomyelitis (EAE). We demonstrate
that microglia mediate EAE disease progression via a mechanism relying on the ...
Cortical regionalization develops via genomic patterning along anterior-posterior
(A-P) and dorsal-ventral (D-V) gradients. Here, we find that normative A-P and D-V
genomic patterning of cortical surface area (SA) and thickness (CT), present in typically
...
While recent wireless micromachines have shown increasing potential for medical use,
their potential safety risks concerning biocompatibility need to be mitigated. They
are typically constructed from materials that are not intrinsically compatible with
...
During antiretroviral therapy (ART), most of the human immunodeficiency virus (HIV)
reservoirs persist in the B cell follicles (BCFs) of lymphoid tissue. Thus, for HIV
cure strategies, it is critical to generate cytolytic CD8+ T cells that home to BCF, ...
Early engagement of the lymphatic system by solid tumors in peripheral, nonlymphoid
tissues is a clinical hallmark of cancer and often forecasts poor prognosis. The significance
of lymph node metastasis for distant spread, however, has been questioned by ...