| 1. |
- Aguilar, J. A., et al.
(författare)
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Hardware Development for the Radio Neutrino Observatory in Greenland (RNO-G)
- 2022
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Ingår i: 37th International Cosmic Ray Conference, ICRC2021. - Trieste, Italy : Proceedings of Science.
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Konferensbidrag (refereegranskat)abstract
- The Radio Neutrino Observatory in Greenland (RNO-G) is designed to make the first observations of ultra-high energy neutrinos at energies above 10 PeV, playing a unique role in multi-messenger astrophysics as the world's largest in-ice Askaryan radio detection array. The experiment will be composed of 35 autonomous stations deployed over a 5 x 6 km grid near NSF Summit Station in Greenland. The electronics chain of each station is optimized for sensitivity and low power, incorporating 150 - 600 MHz RF antennas at both the surface and in ice boreholes, low-noise amplifiers, custom RF-over-fiber systems, and an FPGA-based phased array trigger. Each station will consume 25 W of power, allowing for a live time of 70% from a solar power system. The communications system is composed of a high-bandwidth LTE network and an ultra-low power LoRaWAN network. I will also present on the calibration and DAQ systems, as well as status of the first deployment of 10 stations in Summer 2021.
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| 3. |
- Carlson, Allan D., et al.
(författare)
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Results of a New Evaluation of the Neutron Standards
- 2018
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Ingår i: Reactor Dosimetry. - : ASTM International. - 9780803176614 ; , s. 91-104
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Konferensbidrag (refereegranskat)abstract
- An international effort has produced evaluations of the neutron data standards. Evaluations were obtained for the cross section standards: the H(n,n), 6Li(n,t), 10B(n,067), loB(vx), natc(n,n,) Au(n,y), 235U(n,f), and 238U(n,f) reactions. Also in the evaluation process, the 238U(n,y) and 239Pu(n,f) nonstandard cross sections were evaluated. Many of these are dosimetry cross sections. Evaluations were also obtained for data that are not traditional standards: Maxwellian spectrum averaged cross section for the Au(n,y) cross section at 30 keV, reference cross sections for prompt y-ray production in fast neutron-induced reactions, reference cross sections for very high-energy fission cross sections, the 252Cf spontaneous fission neutron spectrum and the 235U thermal fission neutron spectrum, and the thermal constants. The data and covariances were obtained directly from this evaluation procedure as is required by the dosimetry community.
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| 5. |
- Imbesi, S, et al.
(författare)
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Functional decline and quality of life in the inpatient oncology setting.
- 2013
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Ingår i: APA Conference 2013. - : Australian Physiotherapy Association. ; , s. 3-3
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Question: What effect does inpatient oncology treatment have on patient quality of life and physical functioning? Does recent weight loss associated with inferior physical functioning in patients admitted for inpatient oncology treatment? What are the implications for physiotherapy practice?Design: Prospective observational cohort studyParticipants: Thirty-two patients receiving inpatient oncology treatment.Outcome Measures: EORTC-30, SF8, isometric muscle strength, 30 second arm curl, sit to stand and timed up and go.Results: The EORTC-30 and SF-8 physical functioning and fatigue scales as well as timed up and go and sit to stand functional measures showed a trend of weekly decline in performance during inpatient oncology treatment but changes were not statistically different from baseline. Emotional and cognitive functioning and the 30 second arm curl however improved compared to baseline (p = <0.05). Social functioning showed a decline at two weeks compared to baseline (p = <0.05). Bivariate correlation analysis of baseline data showed sit to stand (r = -0.52), isometric knee extension (r = -0.39) and foot dorsiflexion (r = -0.42) strength to be significantly negatively associated with weight loss (p = <0.05).Conclusion: Despite non-significant decline in physical functioning during inpatient oncology treatment, comparison to healthy aged matched normative values showed obvious inferiority in quality of life and physical functioning at time of admission to hospital.Key Practice Points:• Physiotherapy management of patients in the inpatient oncology setting should focus on preventing decline in physical and social functioning.• Patients with greater reported weight loss may be more prone to larger declines in physical functioning in the inpatient oncology setting.
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| 6. |
- Nuntiyakul, W., et al.
(författare)
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Direct Determination of a Bare Neutron Counter Yield Function
- 2022
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Ingår i: 37th International Cosmic Ray Conference, ICRC2021. - Trieste, Italy : Proceedings of Science.
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Konferensbidrag (refereegranskat)abstract
- Ground based neutron counters are a standard tool for detecting atmospheric showers from GeV-range primary cosmic rays of either solar or galactic origin. Bare neutron counters, a type of lead-free neutron monitor, function much like standard neutron monitors but have different yield functions primarily because they are more sensitive to neutrons of lower energy. When operated together with standard monitors the different yield functions allow estimates to be made of the energy spectrum of galactic or solar particles. In 2010 a new array of twelve bare neutron detectors was installed at the South Pole to operate together with the neutron monitor there. Prior to installation, two of the detectors were operated on a ship that traveled from Sweden to Antarctica and back from November 2009 to April 2010. The purpose of this latitude survey was to use Earth's magnetic field as a spectrometer, blocking cosmic rays below the local cutoff rigidity (momentum per unit charge), from which we determined the response function vs. rigidity of these bare counters. By comparing that measured response function to direct measurements of the cosmic ray spectrum taken by the PAMELA spacecraft, we were able to make a direct determination of the yield function for these detectors.
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