skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Search for: All records

Creators/Authors contains: "Lee, KH"

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. Industrial biotechnology and biopharmaceutical manufacturing leverage biology to enable cellular systems to serve as factories to produce molecules of value to humankind. These biotechnological processes utilize diverse host organisms and address applications from biofuel, polymer building blocks, antibiotics, and whole cell therapies. Industrial biotechnology can address environmental and sustainability goals in addition to chemical production. In a similar fashion, the field of biopharmaceutical manufacturing has and continues to produce life-saving medicines. Despite these diverse applications, these fields rely on common biological themes and require similar approaches for genetic and metabolic engineering as discussed in this review. Through advances in synthetic biology, targeted genetic engineering, DNA sequencing, adaptation and high-throughput screening, industrial biotechnology and biopharmaceutical manufacturing utilize the same framework for efficient biochemical production which can be leveraged in current and future collaborations to enable rapid innovation. 
    more » « less
  2. Smith, KT (Ed.)
    Cosmic rays are energetic charged particles from extraterrestrial sources, with the highest-energy events thought to come from extragalactic sources. Their arrival is infrequent, so detection requires instruments with large collecting areas. In this work, we report the detection of an extremely energetic particle recorded by the surface detector array of the Telescope Array experiment. We calculate the particle’s energy as 244 ± 29   stat .   76 + 51 syst .  exa–electron volts (~40 joules). Its arrival direction points back to a void in the large-scale structure of the Universe. Possible explanations include a large deflection by the foreground magnetic field, an unidentified source in the local extragalactic neighborhood, or an incomplete knowledge of particle physics. 
    more » « less