University of Puerto Rico at Río Piedras

Human gut microbiome viewed across age and geography

Defect-rich and ultrathin N doped carbon nanosheets as advanced trifunctional metal-free electrocatalysts for the ORR, OER and HER

Defect-rich and ultrathin N doped carbon nanosheets exhibited low overpotentials and robust stability for simultaneous ORR, OER and HER.

Tackling the Activity and Selectivity Challenges of Electrocatalysts toward the Nitrogen Reduction Reaction via Atomically Dispersed Biatom Catalysts

Developing efficient catalysts for nitrogen fixation is becoming increasingly important but is still challenging due to the lack of robust design criteria for tackling the activ...

A semi‐empirical <scp>MO</scp> theory for ionization potentials and electron affinities

Abstract A method for calculating the vertical ionization potentials and electron affinities according to their fundamental definition as differences between energies of the sin...

The DSM-IV Rates of Child and Adolescent Disordersin Puerto Rico

Because we used the DISC-IV to apply DSM-IV criteria, the study yielded prevalence rates that are generally comparable with those found in previous surveys. The inclusion of dia...

Crystal Structures of the GCaMP Calcium Sensor Reveal the Mechanism of Fluorescence Signal Change and Aid Rational Design

The genetically encoded calcium indicator GCaMP2 shows promise for neural network activity imaging, but is currently limited by low signal-to-noise ratio. We describe x-ray crys...

Selection-Driven Evolution of Emergent Dengue Virus

In the last four decades the incidence of dengue fever has increased 30-fold worldwide, and over half the world's population is now threatened with infection from one or more of...