Search Results - "Wielopolski, L"

Nuclear spectroscopy for in situ soil elemental analysis: Monte Carlo simulations by Wielopolski, L., Doron, O.

“…We developed a model to simulate a novel inelastic neutron scattering (INS) system for in situ non-destructive analysis of soil using standard Monte Carlo…”
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In situ determination of Soil carbon pool by inelastic neutron scattering: Comparison with dry combustion by Wielopolski, L., Chatterjee, A., Mitra, S., Lal, R.

“…There is a well-documented need for new in situ technologies for elemental analysis of soil, particularly for carbon (C), that overcome the limitations of the…”
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Evaluation of Different Soil Carbon Determination Methods by Chatterjee, A., Lal, R., Wielopolski, L., Martin, M. Z., Ebinger, M. H.

“…Determining soil carbon (C) with high precision is an essential requisite for the success of the terrestrial C sequestration program. The informed choice of…”
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Non-invasive field measurements of soil water content using a pulsed 14 MeV neutron generator by MITRA, S, WIELOPOLSKI, L, OMONODE, R, NOVAK, J, FREDERICK, J, CHAN, A. S. K

“…Current techniques of soil water content measurement are invasive and labor-intensive. Here, we demonstrate that an in situ soil carbon (C) analyzer with a…”
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Measuring partial body potassium in the arm versus total body potassium by Wielopolski, L, Ramirez, L. M, Gallagher, D, Heymsfield, S. B, Wang, Z. M

“…1 Brookhaven National Laboratory, Medical Department, Upton, New York; and 2 St. Luke's/Roosevelt Hospital Center, Columbia University, Nutritional Medicine,…”
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Measuring partial body potassium in the legs of patients with spinal cord injury: a new approach by Wielopolski, L, Ramirez, L. M, Spungen, A. M, Swaby, S, Asselin, P, Bauman, W. A

“…1 Brookhaven National Laboratory, Environmental Science Department, Upton, New York; 2 Department of Veterans Affairs Rehabilitation Research and Development…”
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Advantages of mesh tallying in MCNP5 for soil analysis calculations by Doron, O., Wielopolski, L., Biegalski, S.

“…The Monte Carlo code, MCNP5, includes a mesh and lattice tally option useful for large matrix calculations. Recently, a fast lattice tally (FLT) was developed…”
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Non-carbon-based compact shadow shielding for 14 MeV neutrons by Wielopolski, L., Mitra, S., Doron, O.

“…We are developing a scanning spectroscopy system to measure prompt gammas-rays induced by inelastic neutron scattering and thermal neutron capture to…”
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Concurrent Measurement of Individual Gamma-Ray Spectra During and Between Fast Neutron Pulses by Mitra, S., Wielopolski, L., Tan, H., Fallu-Labruyere, A., Hennig, W., Warburton, W.K.

“…A fast commercial digital multi-channel analyzer (DMCA) with a 40 MHz sampling frequency, was modified for concurrent acquisition during the same data…”
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Time and depth dependent fluxes due to 14 MeV neutrons impinging soil by Biegalski, S., Doron, O., Wielopolski, L.

“…A spectroscopy system measuring inelastic neutron scattering and thermal neutron capture induced gamma-rays is being developed for in-situ soil analysis…”
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Limitations in the PHOTON Monte Carlo gamma transport code by Orion, I, Wielopolski, L

“…Three Monte Carlo gamma transport codes, MCNP, EGS, PHOTON, differ in the degree of difficulty in implementing them for calculation and in the requirements for…”
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Comparison of a digital and an analog signal processing system for neutron inelastic gamma-ray spectrometry by Mitra, S., Wielopolski, L., Hendrey, G.

“…We compared the value of using a digital signal processing unit for gamma-ray spectroscopy with that of an analog one for in situ measurements of gamma-rays…”
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A multiple time-gated system for pulsed digital gamma-ray spectroscopy by Tan, H., Mitra, S., Wielopolski, L., Fallu-Labruyere, A., Hennig, W., Chu, Y. X., Warburton, W. K.

“…Neutron activation analysis (NAA) systems that use pulsed neutron generators (NGs) employ spectrum gating procedures to segregate nuclear processes by…”
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Analysis of potassium spectra with low counting statistics using trapezoidal and library least-squares methods by Ramirez, L.M., Wielopolski, L.

“…Potassium spectra with low counting statistics were measured with a NaI detector from a water phantom, simulating a brain, and were analyzed for error…”
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The Effects of Dose and Radiation Quality on the Shape and Power Saturation of the EPR Signal in Alanine by Ciesielski, B., Wielopolski, L.

“…Variations in the shape and the power saturation of EPR spectra of L-alanine irradiated with photons, electrons, neutrons and protons are reported. It is shown…”
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Response Function of the BGO and NaI(T1) Detectors Using Monte Carlo Simulations by ORION, I., WIELOPOLSKI, L.

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Soil carbon measurements using inelastic neutron scattering by Wielopolski, L., Orion, I., Hendrey, G., Roger, H.

“…Soil carbon sequestration is a whole new area of energy related research that provides a fundamentally new approach for dealing with climate change resulting…”
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The Effect of High-Linear Energy Transfer Ions on the Electron Paramagnetic Resonance Signal Induced in Alanine by Ciesielski, B., Stuglik, Z., Wielopolski, L., Zvara, I.

“…Microcrystalline samples of L-alanine irradiated with energetic high-LET cobalt and iron ions had different EPR spectra compared to alanine samples irradiated…”
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Some aspects of measuring levels of potassium in the brain by Wielopolski, L, Ramirez, L M, Coyle, P, Heymsfield, S, Zimman, J

“…The general aim of this work is to measure brain potassium (K) levels as a marker of intracellular water content and to test the hypothesis of whether edema in…”
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The Effects of Boron on the Electron Paramagnetic Resonance Spectra of Alanine Irradiated with Thermal Neutrons by Ciesielski, B., Wielopolski, L.

“…The effects of boric acid admixture on the intensity and line structure of EPR spectra of free radicals produced in alanine by thermal neutrons are presented…”
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