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Monte Cario uncertainty propagation approaches in ADS burn-up calculations
In activation calculations, there are several approaches to quantify uncertainties: deterministic by means of sensitivity analysis, and stochastic by means of Monte Carlo. Here, two different Monte Carlo approaches for nuclear data uncertainty are presented: the first one is the Total Monte Carlo (TMC). The second one is by means of a Monte Carlo sampling of the covariance information included ...
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The Cesium (Cs-137) isotopic concentration due to irradiation of TRIGA Fuel Elements FE(s) is calculated andmeasured at the Atominstitute (ATI) of ViennaUniversity of Technology (VUT). The Cs-137 isotope, as proved burn-up indicator, was applied to determine the burn-up of the TRIGAMark II research reactor FE. This article presents the calculations andmeasurements of the Cs-137 isotope and its ...
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استفاده از سوخت هیدریدی در رآکتور به عنوان سوخت هسته ای، منجر به کاهش چشمگیر دمای سوخت و به تبع آن کاهش انتشار گازهای حاصل از شکافت که خود منجر به کاهش تورم ایجاد شده در سوخت در زمان کار آن می شود. در این تحقیق فاصله بین سوخت و غلاف بوسیله فلز مذاب پر شده و از برنامه mcnpx 2.6 به منظور محاسبه discharge burn-up استفاده گردید. دو نوع سوخت هسته ای اکسیدی و هیدریدی در دو نوع رآکتور با میله های سوخت...
15 صفحه اولTriton Hyperlipemia in Dogs
Fourteen dogs, fed a regular diet and given 250 mg/kg of triton (a non-ionic surface-active agent) intravenously every 4th day, exhibited a progressively severe hyperlipemia. Serum triglycerides were the first to increase. Cholesterol, mostly in the free form, and phospholipids showed elevation only at a later stage and increased at almost identical rates. The plasma-free fatty acid concentrati...
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Malignant triton tumor is a rare malignant peripheral nerve sheath tumor with rhabdomyoblastic differentiation. Most of these tumors are located in the head, neck, and extremities, and about half of cases are associated with neurofibromatosis type 1 featuring cafe-au-lait spots or cutaneous neurofibromas. We present a 76-year-old man with an insidious chest wall tumor with late progressive pain...
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ژورنال
عنوان ژورنال: Nature Physics
سال: 2019
ISSN: 1745-2473,1745-2481
DOI: 10.1038/s41567-019-0590-9