Search Constraints

Start Over
Filtering by: Subject Food -- Effect of radiation on Remove constraint Subject: Food -- Effect of radiation on Rights Statement In Copyright Remove constraint Rights Statement: In Copyright

Search Results

  • Dose to the female breast from nuclear medicine and diagnostic radiology

    Creator:
    Patel, Aarti
    Abstract:
    There has been increased concern about radiation dose to the female breasts, with approximately 200,000 new breast cancers being diagnosed each year in the United States. The unprecedented increase in the use of radiologic exams on younger women has also raised some additional concerns about how procedures are performed. The...
    Resource Type:
    Masters Thesis
    Full Text:
    Patel for the degree of Master of Science in Radiation Health Physics presented on July 18,2008

  • The effects of gamma radiation on Cascade hop

    Creator:
    Getty, Brooke
    Abstract:
    This gamma irradiation study was conducted to establish an LD50 of the hop (Humulus lupulus L.) cultivar Cascade . The overall, long term goal is to generate replacement hop cultivars by inducing minor but significant DNA alterations with gamma radiation to improve agronomic quality without changing the brewing profile. The...
    Resource Type:
    Presentation
    Full Text:
    The Effects of Gamma Radiation on Cascade Hop By Brooke Getty Research

  • Ultraviolet radiation as an environmental stressor of amphibians

    Creator:
    Bancroft, Betsy A.
    Abstract:
    My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
    Resource Type:
    Dissertation
    Full Text:
    radiation on survival ……………………………….. 57 2.3 The effect of UVB radiation on growth ………………………………… 58 2.4

  • Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

    Creator:
    Scheessele, Erin A.
    Abstract:
    Ultraviolet-B radiation (UVB) is an abiotic stressor in both terrestrial and aquatic systems. The stratospheric ozone layer, depleted due to anthropogenic activities and the cause of elevated UVB at earth's surface over the last four decades, is predicted to recover by 2065. However, UVB levels in aquatic systems may continue...
    Resource Type:
    Dissertation
    Full Text:
    Indirect Effects of Ultraviolet-B Radiation on Larval Amphibians As Mediated by Food Quality and Trophic

  • Design techniques for radiation hardened-phase locked loops

    Creator:
    Nemmani, Anantha Nag
    Abstract:
    Spacecrafts experience radiation in the course of their operation and all electronic equipment on board these spacecrafts has to be designed to withstand the effects of this radiation. This thesis describes the effects of total ionization dose (TID) and single event transients (SET) in phase-locked loops - an important circuit...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 EFFECTS OF RADIATION ON PHASE-LOCKED LOOPS . . . . . . . . . . . . 3 2.1 Effect of total

  • Radiation effects in compound semiconductor heterostructure devices

    Creator:
    Sarkar, Aveek, 1974-
    Abstract:
    Radiation studies were performed on compound semiconductor heterostructure devices. The objective was to understand the degradation processes caused by the exposure of these devices to radiation. Preliminary experiments were focussed on studying the degradation phenomenon in single heterojunctions and single quantum wells. It was found that ionizing radiation like gamma...
    Resource Type:
    Masters Thesis
    Full Text:
    exposure of these devices to radiation. Preliminary experiments were focussed on studying the degradation

  • Hormesis effects in pinto beans from ⁶⁰Co gamma radiation

    Creator:
    Boone, Darren M.
    Abstract:
    Exposure to moderately high levels of ionizing radiation (<20 Gy) has in some instances shown a hormetic effect in numerous vegetable-type crops. Past experiments performed in outdoor cultivars have shown a somewhat unpredictable increase in growth rate with a higher overall yield in a specified time when the seeds are...
    Resource Type:
    Masters Thesis
    Full Text:
    conducted on the subject of radiation hormesis, both in plants and animal type systems. Results while

  • Predicting dose and cell survival distributions for brachytherapy sources

    Creator:
    Stringham, Michael J.
    Abstract:
    The focus of this thesis is to determine the biological impact of dose from brachytherapy sources commonly used in cancer treatment. To achieve this goal, the Monte Carlo code PENELOPE was used to simulate point sources of four different isotopes (¹⁰³Pd, ¹²⁵I, ¹³⁷Cs, and ⁹⁰Sr) in an infinite medium of...
    Resource Type:
    Masters Thesis

  • An experiment on the radioprotetive effect of Sphingosine-1-Phosphate on V-79 hamster lung cells

    Creator:
    Villamar, Glenda
    Abstract:
    Many experiments are being conducted to find compounds that offer radioprotection against radiation damage and that are also non-toxic. It is hopeful that in the future, research for this technology will benefit patients undergoing cancer treatment by reducing radiation damage to normal cells and therefore reducing short and long term...
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Radiation Health Physics presented on August 21, 2002. Title: An Experiment on the

  • Oscillators and phase locked loops for space radiation environments

    Creator:
    Vandepas, Martin
    Abstract:
    Circuits operating outside the earth’s atmosphere are more vulnerable to cosmic radiation and require special design consideration. The purpose of this work is to explore methods of mitigating the effect of radiation in phase locked loop (PLL) circuits. Several voltage controlled oscillators (VCOs) and two complete PLLs are designed and...
    Resource Type:
    Masters Thesis
    Full Text:
    electronics are always given thorough attention to the effect of radiation on the circuit. Research has