Fisk University is a historically black university founded in 1866 in Nashville, Tennessee, United States. The 40-acre campus is a historic district listed on the National Register of Historic Places.In 1930, Fisk was the first African-American institution to gain accreditation by the Southern Association of Colleges and Schools. Accreditations for specialized programs quickly followed. Wikipedia.
Consolidated Nuclear Security LLC and Fisk University | Date: 2014-08-07
A combined thermal neutron detector and gamma-ray spectrometer system, including: a first detection medium including a lithium chalcopyrite crystal operable for detecting neutrons; a gamma ray shielding material disposed adjacent to the first detection medium; a second detection medium including one of a doped metal halide, an elpasolite, and a high Z semiconductor scintillator crystal operable for detecting gamma rays; a neutron shielding material disposed adjacent to the second detection medium; and a photodetector coupled to the second detection medium also operable for detecting the gamma rays; wherein the first detection medium and the second detection medium do not overlap in an orthogonal plane to a radiation flux. Optionally, the first detection medium includes a
Fisk University and Consolidated Nuclear Security Llc | Date: 2015-09-02
A photodetector device, including: a scintillator material operable for receiving incident radiation and emitting photons in response; a photodetector material coupled to the scintillator material operable for receiving the photons emitted by the scintillator material and generating a current in response, wherein the photodetector material includes a chalcopyrite semiconductor crystal; and a circuit coupled to the photodetector material operable for characterizing the incident radiation based on the current generated by the photodetector material. Optionally, the scintillator material includes a gamma scintillator material and the incident radiation received includes gamma rays. Optionally, the photodetector material is further operable for receiving thermal neutrons and generating a current in response. The circuit is further operable for characterizing the thermal neutrons based on the current generated by the photodetector material.
Fisk University and Consolidated Nuclear Security Llc | Date: 2015-06-03
A radiation detection device, including: a support structure; and a chalcopyrite crystal coupled to the support structure; wherein, when the chalcopyrite crystal is exposed to radiation, a visible spectrum of the chalcopyrite crystal changes from an initial color to a modified color. The visible spectrum of the chalcopyrite crystal is changed back from the modified color to the initial color by annealing the chalcopyrite crystal at an elevated temperature below a melting point of the chalcopyrite crystal over time. The chalcopyrite crystal is optionally a
Fisk University and Lawrence Livermore National Laboratory | Date: 2014-03-20
In one embodiment, a crystal includes at least one metal halide; and an activator dopant comprising ytterbium. In another general embodiment, a scintillator optic includes: at least one metal halide doped with a plurality of activators, the plurality of activators comprising: a first activator comprising europium, and a second activator comprising ytterbium. In yet another general embodiment, a method for manufacturing a crystal suitable for use in a scintillator includes mixing one or more salts with a source of at least one dopant activator comprising ytterbium; heating the mixture above a melting point of the salt(s); and cooling the heated mixture to a temperature below the melting point of the salts. Additional materials, systems, and methods are presented.
Agency: NSF | Branch: Standard Grant | Program: | Phase: HIST BLACK COLLEGES AND UNIV | Award Amount: 299.95K | Year: 2016
The Historically Black Colleges and Universities-Undergraduate Program (HBCU-UP) Research Initiation Awards (RIAs) provide support to STEM junior faculty at HBCUs who are starting to build a research program, as well as for mid-career faculty who may have returned to the faculty ranks after holding an administrative post or who need to redirect and rebuild a research program. Faculty members may pursue research at their home institution, at an NSF-funded Center, at a research intensive institution or at a national laboratory. The RIA projects are expected to help further the faculty members research capability and effectiveness, to improve research and teaching at his or her home institution, and to involve undergraduate students in research experiences. With support from the National Science Foundation, Fisk University will conduct research aimed at isolating novel chemical entities from marine micro-organisms. This project represents a new area of research (Marine Natural Chemistry) at Fisk University, a small liberal arts HBCU with over 94% under-represented minority undergraduates in STEM. This project will be used to enhance teaching and learning at Fisk across several disciplines (chemistry, biology, mathematics (statistics) and computer science) and thus, provide experiential learning to a wide undergraduate student population. In addition, Fisk University is transforming its STEM pedagogies to include authentic research in course-associated laboratories, where this work will serve as a model in both organic and analytical chemistry courses, thus having a broader impact on the STEM majors, their professional development, and retention.
The goal of the proposed study is to identify new bioactive chemical entities from a newly isolated yellow-cream Gram-negative, rod-shaped Pseudomonas stutzeri bacteria (strain 35M3) whose identity and uniqueness was confirmed from 16S rRNA gene sequence analysis. The specific aims of this project are to: 1) to use high information density analytic tools to identify novel chemical entities from the newly identified strain of Pseudomonas 35M3 and the impact on this strains metabolome by co-culture experiments (with Gram-positive bacteria Rhodococcus wratislaviensis, Gram-negative bacteria Escherichia coli, and fungus Saccharomyces cerevisiae separately) or after antibiotic selection; and 2) extend bioactivity analysis beyond the typical assessment of bacterial and mammalian cell cytotoxicity to include the impact of these novel compounds on dopamine neuron development and protection against induced dopamine neurodegeneration using C. elegans as a model system. This study has the potential to identify 16S rRNA gene sequences of newly identified microbial strains. The data generated from this work will inform the design of future experiments that explore other metabolomes and/or dissect cellular pathways central to normal homeostasis of cell development, signaling, cell-cell communication, and other processes. This project will be conducted in collaboration with Vanderbilt University.