臭素系難燃剤プラスチックの熱分解油化技術に関する研究

研究科: 工学研究科学位:千大院工博甲第工162号博士(工学)千葉大

看護学研究科教員業績目録-2010年1月～12月-

Excel file including the TTC sensitive strains also detected by Bin-Umer et al., 2014. (XLSX 12 kb

Remeasurement of ²³⁴U Half-Life

The half-life of ²³⁴U has been measured using a novel approach. In this method, a uranium material was chemically purified from its thorium decay product at a well-known time. The ingrowth of the ²³⁰Th daughter product in the material was followed by measuring the accumulated ²³⁰Th daughter product relative to its parent ²³⁴U nuclide using inductively coupled plasma mass spectrometry. Then, the ²³⁴U decay constant and the respective half-life could be calculated using the radioactive decay equations based on the <i>n</i>(²³⁰Th)/<i>n</i>(²³⁴U) amount ratio. The obtained ²³⁴U half-life is 244 900 ± 670 years (<i>k</i> = 1), which is in good agreement with the previously reported results in the literature with comparable uncertainty. The main advantages of the proposed method are that it does not require the assumption of secular equilibrium between ²³⁴U and ²³⁸U. Moreover, the calculation is independent from the ²³⁸U half-life value and its uncertainty. The suggested methodology can also be applied for the remeasurement of the half-lives of several other long-lived radionuclides

Methodology for the Preparation and Validation of Plutonium Age Dating Materials

The present work describes a method for the preparation and validation of plutonium age dating reference materials. The test samples prepared in this context could be used to validate experimental protocols for determining the production date of plutonium via the ²³⁴U/²³⁸Pu, ²³⁵U/²³⁹Pu, ²³⁶U/²⁴⁰Pu, and ²⁴¹Am/²⁴¹Pu chronometers. The starting material was prepared using reactor-grade plutonium, which was purified using a dedicated method to guarantee high Pu recovery, while maximizing U and Am separation efficiencies. The U and Am separation factors were determined by the addition of high-amounts of ²³³U and ²⁴³Am spikes and their remeasurement in the final product. The prepared material is intended for quality control and assessment of method performance in nuclear forensics and safeguards

Additional file 6: Figure S1. of Ribosome quality control is a central protection mechanism for yeast exposed to deoxynivalenol and trichothecin

The global clustering coefficient was used as a measure of the degree of clustering in the whole network. We compared the observed value (blue line) against 1000 random seed networks for A) DON, B) TTC, C) DON and Tcin, and D) DON or TTC. (PDF 588 kb

Additional file 7: Figure S2. of Ribosome quality control is a central protection mechanism for yeast exposed to deoxynivalenol and trichothecin

The average path length of the giant connected component. We compared the observed value (blue line) against 1000 random seed networks for A) DON, B) TTC, C) DON and TTC, and D) DON or TTC. (PDF 588 kb

Additional file 8: Figure S3. of Ribosome quality control is a central protection mechanism for yeast exposed to deoxynivalenol and trichothecin

Assessment of topological properties based on a Dehmer entropy measure. We compared the observed value (blue line) against 1000 random seed networks for A) DON, B) TTC, C) DON and Tcin, and D) DON or TTC. (PDF 588 kb

Additional file 2: Figure S1. of A comprehensive study of the genomic differentiation between temperate Dent and Flint maize

Metrics of the selection screens for 136 temperate inbred lines along the ten maize chromosomes based on genotyping data. (PDF 4242 kb

Additional file 7: Table S9. of A comprehensive study of the genomic differentiation between temperate Dent and Flint maize

Gene-wise level of differentiation of allele frequencies between landraces and Dent (left) and Flint (right) elite lines based on genotyping data. (XLSX 27 kb

Additional file 1: Figure S2. of A comprehensive study of the genomic differentiation between temperate Dent and Flint maize

Variation of historical recombination rates along the ten maize chromosomes. Figure S3. Gene ontology (GO) terms assigned to categories of biological processes for the candidate gene sets. Figure S4. Pathway analysis for the Dent and Flint candidate gene sets using MapMan [53]. Figure S5. Gene-wise π (left) and TD (right) values based on whole-genome sequence data of 21 temperate Dent and 19 temperate Flint lines. Figure S6. Distributions of F ST values for different genomic regions based on whole-genome sequence data of 40 elite lines. Table S1. Elite lines under study with germplasm pool assignment and data source. Table S2. Window-based statistics and thresholds according to the selected quantile based on the panel of 136 temperate inbred lines genotyped with the 600 k array. Table S4. Gene-wise statistics for all genes and for Dent and Flint candidate genes. Table S7. Landraces under study with their geographic origins. (PDF 1175 kb