Zeitschriftenartikel: „(n, n’γ)“

1

Larson, D. C., und J. K. Dickens. „Cr53(n,n’γ) reactions and the level structure ofCr53“. Physical Review C 39, Nr. 5 (01.05.1989): 1736–50. http://dx.doi.org/10.1103/physrevc.39.1736.

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2

Henning, Greg, Kerveno Maëlle, Philippe Dessagne, François Claeys, Nicolas Dari Bako, Marc Dupuis, Stephane Hilaire et al. „Measurement of ¹⁸³W(n, n’γ) and (n, 2nγ) cross-sections (preliminary)“. EPJ Web of Conferences 284 (2023): 01046. http://dx.doi.org/10.1051/epjconf/202328401046.

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The necessary improvement of evaluated nuclear databases for appplication will be achieved with improvement of models and new, precise data. In particular, the effect of inelastic neutrons scattering can be of importance for reactors. In order to test the models, we performed measurement of (n, n’γ) and (n, 2nγ) cross-sections on 183W. These data will help constrain the calculation codes and ensure a better evaluation of the total (n, xn) cross section. The experimental setup and the data analysis method will be presented. The preliminary experimental results for the 183W isotope will be compared to predictions from Talys nuclear reaction code.

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3

Belgya, T., B. Fazekas, G. Molnár, Á. Veres, R. A. Gatenby, J. R. Vanhoy, E. M. Baum, E. L. Johnson und S. W. Yates. „Search for various collective excitation modes with the (n, n’γ) reaction“. Acta Physica Hungarica 69, Nr. 3-4 (April 1991): 179–89. http://dx.doi.org/10.1007/bf03156090.

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4

Yates, S. W. „Mixed-symmetry states in weakly deformed nuclei from (n,n’γ) reaction studies“. Journal of Radioanalytical and Nuclear Chemistry 265, Nr. 2 (Juli 2005): 291–95. http://dx.doi.org/10.1007/s10967-005-0823-5.

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5

Jungclaus, A., T. Belgya, D. P. DiPrete, M. Villani, E. L. Johnson, E. M. Baum, C. A. McGrath, S. W. Yates und N. V. Zamfir. „Lifetimes and electromagnetic decay properties of negative-parity states inSm150,152,154from (n,n’γ) measurements“. Physical Review C 48, Nr. 3 (01.09.1993): 1005–9. http://dx.doi.org/10.1103/physrevc.48.1005.

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6

DiPrete, D. P., T. Belgya, E. M. Baum, E. L. Johnson, S. W. Yates, P. D. Cottle, M. A. Kennedy und K. A. Stuckey. „Search for high-lying octupole states and octupole fragmentation inPt196with the (n,n’γ) reaction“. Physical Review C 48, Nr. 6 (01.12.1993): 2603–6. http://dx.doi.org/10.1103/physrevc.48.2603.

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7

Henning, Greg, Maëlle Kerveno, Philippe Dessagne, François Claeys, Nicolas Dari Bako, Marc Dupuis, Stéphane Hilaire et al. „On the need for precise nuclear structure data for high quality (n, n’γ) cross-section measurements“. EPJ Web of Conferences 284 (2023): 01022. http://dx.doi.org/10.1051/epjconf/202328401022.

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The necessary improvement of evaluated nuclear data for nuclear applications development is possible through new and high-quality measurements, often combined with appropriate nuclear-reaction modelling. In particular, improving inelastic cross-section evaluations requires new and high-quality data. We measure (n, n’γ) cross-sections using prompt γ-ray spectroscopy and neutron energy determination by time-of-flight. To extract, from these partial data, the total inelastic cross-section, we rely on theoretical model as well as nuclear structure data such as γ ray emission probabilities. This structure information, tabulated in databases, comes with uncertainty. This directly affects the precision of our results, regardless of how good the measurement is. In this paper, we will present the issue of limited precision structure data and its impact on nuclear reaction data quality in the case of neutron inelastic scattering measurements. We will also discuss how to foresee and mitigate the issue.

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8

Dari Bako, Nicolas, Maëlle Kerveno, Philippe Dessagne, Catalin Borcea, Marian Boromiza, Roberto Capote, François Claeys et al. „From ²³²Th(n, n’γ) cross sections to level production and total neutron inelastic scattering cross sections“. EPJ Web of Conferences 284 (2023): 08005. http://dx.doi.org/10.1051/epjconf/202328408005.

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To probe the neutron inelastic scattering off 232Th, an experiment took place at the EC-JRC Geel conducted with the experimental setup GRAPhEME to detect emitted γ-rays. The prompt γ-ray spectroscopy method was used and 70 experimental 232Th(n, n’γ) cross sections were obtained from the experimental data. Combining these cross sections, nuclear-structure data available in databases and hypotheses to complete the latter, neutron inelastic level production cross sections in 232Th and the total inelastic cross section were calculated. For the first time, the total inelastic cross section of an actinide nucleus was derived on the total neutron energy range from experimental data only. Comparisons of (n, n’) cross section data with evaluated data reveal a good agreement between them all above 300 keV of neutron energy. TALYS calculations are compatible but lower than the evaluated data.

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Negret, Alexandru, Catalin Borcea, Marian Boromiza, François Claeys, Philippe Dessagne, Cristiano Fontana, Greg Henning et al. „A new measurement on ⁵⁶Fe(n,inl) using GAINS@GELINA“. EPJ Web of Conferences 284 (2023): 01034. http://dx.doi.org/10.1051/epjconf/202328401034.

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The extended dataset of 56Fe(n,n’γ) cross sections measured by our group more than a decade ago at GELINA (Geel Linear Accelerator) was used in many recent evaluations like ENDF, JEFF and CIELO. Despite the special measures we took to ensure reliability and accuracy, concerns were raised by various groups with regard to several features of this dataset (absolute normalization and/or shape) and therefore the 56Fe(n,inl) cross section is still under the evaluation by the International Nuclear Data Evaluation Network (INDEN). Consequently, a new experiment is now under preparation aiming to take advantage of the numerous experimental improvements of the GAINS (Gamma Array for Inelastic Neutron Scattering) setup implemented over the years. While γ spectroscopy combined with the time-of-flight method will remain the main technique involved, several other experimental details will differ substantially.

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Claeys, François, Philippe Dessagne, Maëlle Kerveno, Cyrille De Saint Jean, Catalin Borcea, Marian Boromiza, Roberto Capote et al. „Measurement of partial (n, n’γ) reaction cross-sections on highly radioactive nuclei of interest for energy production“. EPJ Web of Conferences 284 (2023): 01014. http://dx.doi.org/10.1051/epjconf/202328401014.

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In the context of the development of Gen. IV nuclear reactors, the GIF (Generation IV. International Forum) has selected six innovative technologies. Among them, one can highlight the concept of breeding for 232Th/233U and 238U/239Pu fuel cycles. But those nuclei, crucial for such cycles, suffer from a lack of precise knowledge (nuclear structure, reaction cross sections). In particular, it has been demonstrated that neutron inelastic scattering reaction cross sections are not known with sufficient precision for the isotopes 238U and 239Pu, and not known at all experimentally for 233U. In order to perform simulations of innovative reactor cores for the development of those technologies, the knowledge of the reaction cross section has to be improved which implies that new measurements have to be done. The GRAPhEME (GeRmanium array for Actinides PrEcise MEasurements) experimental setup, developed by the IPHC laboratory from CNRS and installed at the EC-JRC-Geel GELINA facility is a powerful tool to answer this need [1, 2]. Combining the prompt γ-ray spectroscopy and the time-of-flight methods, it measures partial (n, xnγ) reaction cross sections. This paper reports on the improvements made on the GRAPhEME setup and data analysis methodology to tackle the challenge of (n, xnγ) cross section measurements on high activity actinides. Results obtained so far on 233U are presented compared to TALYS calculations.

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Party, Eliot, Catalin Borcea, Philippe Dessagne, Xavier Doligez, Grégoire Henning, Maëlle Kerveno, Alexandru Negret, Markus Nyman, Adina Olacel und Arjan Plompen. „Neutron inelastic scattering of 232Th: measurements and beyond“. EPJ Web of Conferences 211 (2019): 03005. http://dx.doi.org/10.1051/epjconf/201921103005.

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Gamma production cross sections have been obtained for 81 transitions in 232Th from (n,n’γ), 11 in 231Th from (n,2nγ) and 7 in 230Th from (n,3nγ) reactions using prompt gamma spectroscopy. Incident neutron energies were determined using the neutron time-of-flight technique. Sources of uncertainty have been examined and their correlations have been computed. Total uncertainty on cross sections ranges from 4 to 20%. Obtained cross sections are in agreement with prior experiments, but are not well reproduced by the TALYS 1.8 reaction code using default parameters. During analysis, discrepancies between our findings and the Evaluated Nuclear Structure Data File (ENSDF) were noted. Future work related to the present experiment includes: improving theoretical models, quantifying the influence of the 232Th inelastic neutron cross section on reactor core parameters, and conducting additional measurements.

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Henning, Greg, Maëlle Kerveno, Philippe Dessagne, François Claeys, Nicolas Dari Bako, Marc Dupuis, Stephane Hilaire et al. „Using the Monte-Carlo method to analyze experimental data and produce uncertainties and covariances“. EPJ Web of Conferences 284 (2023): 01045. http://dx.doi.org/10.1051/epjconf/202328401045.

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The production of useful and high-quality nuclear data requires measurements with high precision and extensive information on uncertainties and possible correlations. Analytical treatment of uncertainty propagation can become very tedious when dealing with a high number of parameters. Even worse, the production of a covariance matrix, usually needed in the evaluation process, will require lenghty and error-prone formulas. To work around these issues, we propose using random sampling techniques in the data analysis to obtain final values, uncertainties and covariances and for analyzing the sensitivity of the results to key parameters. We demonstrate this by one full analysis, one partial analysis and an analysis of the sensitivity to branching ratios in the case of (n,n’γ) cross section measurements.

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Ramirez, Camilo Cordero, und Cédric Jouanne. „Nuclear data generation & implementation for analog Monte Carlo simulation“. EPJ Web of Conferences 284 (2023): 03011. http://dx.doi.org/10.1051/epjconf/202328403011.

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Nuclear data is in constant evolution as more experimental data is gathered, computational capabilities increase, and evaluators verify its validity by means of stochastic and deterministic simulations. The focus here is on the analog Monte Carlo simulation of nuclear reactions that produce more than two particles in the outgoing channel, which needs specific considerations to ensure the correlations between the particles and thus the conservation of energy and of translational and angular momenta. It is possible to adapt nuclear data and its exploitation to implement realistic reactions from the phenomenological point of view (as opposed to the historical need of variance reduction techniques), which increases computation time but allows the expansion of the transport codes capabilities. Simulation anomalies were found concerning the kinematical calculations of photon energies emitted from neutron-induced inelastic scattering (n,n’γ), as well as concerning the photon multiplicity of 155Gd(n,γ) due to the presence of a rotational band in 156Gd. Recommendations are given for potential solutions for both anomalies.

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Boromiza, Marian, Adina Olacel, Catalin Borcea, Philippe Dessagne, Greg Henning, Maëlle Kerveno, Alexandru Negret, Markus Nyman, Andreea Oprea und Arjan Plompen. „Neutron-induced inelastic γ-production cross sections on ^58,60,64Ni“. EPJ Web of Conferences 284 (2023): 01010. http://dx.doi.org/10.1051/epjconf/202328401010.

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This paper reports partial results of a (n, n’γ) measurement on nickel. The inelastic channel was measured using the Gamma Array for Inelastic Neutron Scattering (GAINS) spectrometer at the 100-m measurement cabin of the Geel Electron Linear Accelerator (GELINA) neutron source of the European Commission’s Joint Research Centre (EC-JRC) in Geel, Belgium. Using γ spectroscopy, we were able to extract angle-integrated production cross sections for several γ rays but we report here only the results for the main transition in 58Ni. We discuss however in detail the observed discrepancy between our data and other experiments (especially the work of Voss et al.). We also shortly comment on the quality of the neutron-target optical model potential in describing the inelastic data in this mass region. The calculations were performed using the talys 1.9 code in the default settings.

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Ruskov, Ivan, Yury Kopach, Vyacheslav Bystritsky, Vadim Skoy, Dimitar Grozdanov, Nikita Fedorov, Tatyana Tretyakova et al. „TANGRA multidetector systems for investigation of neutron-nuclear reactions at the JINR Frank Laboratory of Neutron Physics“. EPJ Web of Conferences 256 (2021): 00014. http://dx.doi.org/10.1051/epjconf/202125600014.

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In the framework of TANGRA-project at the Frank Laboratory of Neutron Physics of the Joint Institute for Nuclear research in Dubna (Russia), two experimental setups (Fig. 1) have been designed and tested for investigation of 14-MeV neutron-induced nuclear reactions on a number of important for nuclear science and engineering isotopes. As a source of 14-MeV “tagged” neutrons we are using the VNIIA ING-27 steady-state portable neutron generator with embedded in its vacuum tube 64-pixel charge-particle detector. The “Romashka” system is an array of up-to 24 hexagonal NaI(Tl)-crystal scintillation probes, while the “Romasha” array consists of 18 cylindrical BGO-crystal detectors of neutrons and gamma-rays. In addition to these detectors there is a HPGe gamma-ray spectrometer and a number of Stilbene detectors that can be added for high-resolution gamma-ray spectrometry and neutron-gamma detection. The main characteristics of the neutron-induced nuclear reaction products can be investigated by commissioning the detectors in suitable for these experiments’ geometries. Both setups can be used for doing basic and applied scientific research, because they permit simultaneously to measure the energy, angle and multiplicity distributions of gamma-rays and neutrons, produced in the competitive neutron-induced nuclear reactions (n, n’γ), (n,2n), (n, xnγ) and (n, f) in pure or complex substances.

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Hecht, Adam, Phoenix Baldez und Baldez Baldez. „Developments in New Measurements of Fission Cross-Sections, Fragment Yields, and Prompt and Quasi-Prompt Gammas for Nuclear Data Needs“. EPJ Web of Conferences 242 (2020): 01002. http://dx.doi.org/10.1051/epjconf/202024201002.

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The University of New Mexico Fission Spectrometer was developed to measure fission product yield, as part of the LANL SPIDER collaboration. The spectrometer operates as an E-v detector to extract product mass event-by-event, with a time of flight region followed by an ionization chamber for kinetic energy measurements. By using the ionization chamber as a singlecathode/single-anode time projection chamber, stopping power and thus Z information is extracted, for coupled A and Z measurements. New work is being performed to add gamma ray detectors in the data stream, placed near the target region for prompt gammas and near the ionization chamber for quasiprompt (>50 ns) and later gammas, correlated with individual fission products. A stand-alone parallel plate ionization chamber (PPIC) is also being developed for fission tagging gamma ray data. The PPIC will also allow discrimination between charged particle out events and (n,n’γ), and discriminate between alpha emission and fission. Using layers in the PPIC, other targets can be measured simultaneously with a calibration target, giving relative fission cross sections. Past measurements with the spectrometer were performed at LANSCE and we plan to continue measurements there. The current work is supported by the NNSA Stewardship Science Academic Alliance.

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Lee, HyunKuen. „N-Ving N Type English Compounds and Their Korean Equivalents“. Modern Studies in English Language & Literature 65, Nr. 1 (28.02.2021): 127–46. http://dx.doi.org/10.17754/mesk.65.1.127.

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Lee, A.-hyoung. „A Study on the Meaning of ‘Adj + zhe + N’“. Journal of Chinese Studies 84 (30.05.2018): 129–53. http://dx.doi.org/10.36493/jcs.84.6.

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19

Говор, Л. И., А. М. Демидов, В. А. Куркин und И. В. Михайлов. „Исследование238U в реакции (n, n'γ)“. Ядерная физика 77, Nr. 02 (2014): 154–89. http://dx.doi.org/10.7868/s0044002714010097.

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Говор, Л. И., А. М. Демидов und С. А. Берендаков. „Исследование166Er в реакции (n, n'γ)“. Ядерная физика 78, Nr. 03 (2015): 196–209. http://dx.doi.org/10.7868/s0044002715020178.

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21

Dimitrakopoulos, Nikolaos, Georgios Perdikakis, Pelagia Tsintari, Carl R. Brune, Thomas N. Massey, Zach Meisel, Alexander Voinov et al. „Experimental study of ³⁷Cl(α,n)⁴⁰K reaction in order to constrain the reaction rate of destruction of ⁴⁰K in stars“. EPJ Web of Conferences 275 (2023): 02003. http://dx.doi.org/10.1051/epjconf/202327502003.

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40K is one of the main isotopes responsible for the radiogenic heating of the mantle in Earth-like exoplanets [1] and hence, plays a very important role in the internal geophysical dynamics of a planet. The abundance of 40K in the mantle and the core of such planets is not always possible to be determined by astrophysical observations, although constraining the nuclear reaction rates of 40K during stellar evolution can also lead to constraining the present amount of 40K in these planets, which will improve our understanding on the habitability potential of Earth-like exoplanets. This study aims to constrain the 40K(n,α)37Cl reaction rate, one of the two major destruction paths of 40K in stellar nucleosynthesis,by measuring the reverse reaction 37Cl(α,n)40K and applying the principle of detailed balance as we have done before for the 40K (40K(n,p)40Ar reaction rate) [2]. During the first set of measurements we performed differential cross-section measurements of the 37Cl(α,n1γ)40K, 37Cl(α,n2γ)40K and 37Cl(α,n3γ)40K reaction channels, for six different center of mass energies in the range between 5.1 and 5.4 MeV. The experiment took place at the Edwards Accelerator Laboratory of Ohio University. The gamma rays from the reaction channels mentioned above were detected by two LaBr3 scintillators. Using the swinger facility to change the angle of the beam-target system with respect to the detection system, we were able to take measurements for the differential cross-section at six different angles between 20° and 120° in the lab system.

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Говор, Л. И., А. М. Демидов, В. А. Куркин und И. В. Михайлов. „Структура уровней 164 Dy из реакции (n, n'γ)“. Ядерная физика 80, Nr. 01 (2017): 2–25. http://dx.doi.org/10.7868/s0044002716050093.

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Mehrem, R., J. T. Londergan und G. E. Walker. „Isolating physical effects in the exclusive (N,N’π) reaction“. Physical Review C 51, Nr. 4 (01.04.1995): 2031–43. http://dx.doi.org/10.1103/physrevc.51.2031.

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Tishchenko, V. K., V. M. Petriev, A. A. Mikhailovskaya, O. A. Smoryzanova, S. A. Ivanov und A. D. Kaprin. „Pharmacokinetic properties of a new bone-seeking compound based on N,N,N',N'- ethylenediaminetetrakis(methylene phosphonic acid) labeled with Ga-68 in intact rats and rats with experimental model of bone callus“. "Radiation and Risk" Bulletin of the National Radiation and Epidemiological Registry 28, Nr. 4 (2019): 108–17. http://dx.doi.org/10.21870/0131-3878-2019-28-4-108-117.

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Qaim, S. M., und R. Wölfle. „7Li(n,n’t)4He Reaction Cross Section via Tritium Counting“. Nuclear Science and Engineering 96, Nr. 1 (Mai 1987): 52–57. http://dx.doi.org/10.13182/nse87-a16364.

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Петриев, Василий Михайлович, В. К. Тищенко, О. А. Сморызанова und В. Г. Скворцов. „Фармакокинетика N,N,N’N’-этилендиаминтетра- кис(метиленфосфоновой кислоты), меченной галлием-68, в организме интактных крыс“. Химико-фармацевтический журнал 51, Nr. 5 (24.05.2017): 3–8. http://dx.doi.org/10.30906/0023-1134-2017-51-5-3-8.

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Изучение фармакокинетики нового остетропного радиофармпрепарата на основе N,N,N’N’-этилендиаминтетра(метиленфосфоновой кислоты) (ЭДТМФ), меченной позитрон-излучающим радионуклидом 68Ga, для ПЭТ диагностики костных метастазов показало, что 68Ga-ЭДТМФ быстро накапливается в костной ткани: до (3,55 ± 0,20) %/г в кости бедра, (2,24 ± 0,13) %/г в кости позвоночника, (2,00 ± 0,21) %/г в кости ребра и (1,81 ± 0,10) %/г в кости черепа через 1 ч после внутривенного введения), а также быстро выводится из крови и характеризуется минимальным поступлением во внутренние органы и ткани. Выведение большей части активности происходит через мочевыделительную систему. Значительное содержание 68Ga-ЭДТМФ отмечается также в коленных суставах. Установлено, что концентрация 68Ga-ЭДТМФ в костной ткани значительно выше по сравнению с 68GaCl3 (p < 0,001 – 0,05). Величины отношения удельного содержания активности в костной ткани к содержанию в органах и тканях (коэффициенты дифференциального накопления — КДН) во все сроки исследования больше 1. Например, максимальные соотношения кость бедра/кровь и кость бедра/мышца составляют (8,00 ± 1,31) и (43,1 ± 7,4). Таким образом, 68Ga-ЭДТМФ можно рассматривать его в качестве потенциального РФП для диагностики повреждений костной ткани методом позитронной эмиссионной томографии.

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Diószegi, I., Cs Maráczy und Á. Veres. „Low-spin levels in 136Ba studied via the (n, n'γ) reaction“. Nuclear Physics A 438, Nr. 2 (Mai 1985): 395–412. http://dx.doi.org/10.1016/0375-9474(85)90382-3.

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Schmidt, H. H., P. Hungerford, T. von Egidy, H. J. Scheerer, H. G. Börner, S. A. Kerr, K. Schreckenbach et al. „Nuclear structure of 163Dy studied with (n, γ), (n, n'γ), (d, p) and (d, t) reactions“. Nuclear Physics A 504, Nr. 1 (November 1989): 1–35. http://dx.doi.org/10.1016/0375-9474(89)90280-7.

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Jarvis, Neil V. „DERIVATIVES OF INIDOPYROPHOSPHORIC ACIDS AS EXTRACTANTS PART 4†. EXTRACTION OF NITRIC ACID BY N,N- N’N’ OCTABUTYLIHIDODIPHOSPHOTETRANIDE*“. Solvent Extraction and Ion Exchange 11, Nr. 2 (April 1993): 223–37. http://dx.doi.org/10.1080/07366299308918153.

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Gatenby, R. A., E. L. Johnson, E. M. Baum, S. W. Yates, D. Wang, J. R. Vanhoy, M. T. McEllistrem, T. Belgya, B. Fazekas und G. Molnár. „Decay properties and lifetimes of states in 144Sm from (n, n'γ) reaction studies“. Nuclear Physics A 560, Nr. 2 (Juli 1993): 633–63. http://dx.doi.org/10.1016/0375-9474(93)90038-y.

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Oliva, Osmar Pereira. „O homoerotismo N’a correspondência de Fradique Mendes“. Revista do Centro de Estudos Portugueses 20, Nr. 27 (31.12.2000): 211. http://dx.doi.org/10.17851/2359-0076.20.27.211-221.

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Partindo das relações entre Eros e Logos, estabelecidas por Platão em O Banquete, Fedro e Lisis, procuramos discutir, neste trabalho, o homoerotismo n’A Correspondência de Fradique Mendes, manifesto através do olhar seduzido do narrador pelo corpo masculino e de uma fala excessiva sobre o corpo de outro homem.À partir des relations entre Eros e Logos, établiés par Platão dans O Banquete, Fedro et Lisis, voulons discutir dans ce travail, l’homoérotisme dans A Correspondência de Fradique Mendes, évident à travers du regard seduisé du narrateur par le corps masculin et aussi d’un discours excessif sur un corps d’autre homme.

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Chukhichev, M. V., V. I. Petrov und R. Stegmann. „Observation of the NΓ−x line in GaAs0.42P0.58:N“. physica status solidi (b) 135, Nr. 2 (01.06.1986): K139—K142. http://dx.doi.org/10.1002/pssb.2221350255.

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Dave, J. H., J. J. Egan, G. P. Couchell, G. H. R. Kegel, A. Mittler, D. J. Pullen, W. A. Schier und E. Sheldon. „Cross Sections, Transition Schemes, and Branching Ratios for232Th from the 232Th(n,n'γ) Reaction“. Nuclear Science and Engineering 91, Nr. 2 (Oktober 1985): 187–208. http://dx.doi.org/10.13182/nse85-a27441.

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Salkova, M. A., und O. A. Machina. „The genitive case as a grammatical preference of modern press“. Professional Discourse & Communication 1, Nr. 4 (25.12.2019): 7–15. http://dx.doi.org/10.24833/2687-0126-2019-1-4-7-15.

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The article focuses on the construction N’s + N known as the genitive case structure. Analysis of the data retrieved from two English Language corpora (the BNC and COCA) has demonstrated that the N’s + N structure as a typical grammatical feature of modern mass media discourse realizes certain communicative and discursive properties that constitute the core of this mixed morphological-and-syntactic phenomenon. Thanks to its anthropocentric character, the structure also possesses some functional capacities that make a valuable and indispensable contribution to the organization of meaning in mass media texts.

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Cruz, Lorenzo M., Raakiyah Y. Moore, Marcela Torres Gutierrez, Apsara K. Herath, Carl J. Lovely und Muhammed Yousufuddin. „Crystal structures of 4-{(E)-3-[(imino-λ5-azanylidene)amino]prop-1-enyl}-N,N-dimethylimidazole-1-sulfonamide and 2-[(imino-λ5-azanylidene)amino]-4-{(E)-3-[(imino-λ5-azanylidene)amino]prop-1-enyl}-N,N-dimethylimidazole-1-sulfonamide“. Acta Crystallographica Section E Crystallographic Communications 75, Nr. 5 (25.04.2019): 695–99. http://dx.doi.org/10.1107/s205698901900519x.

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The structures of two azide containing imidazole derivatives are reported. Allylic azides are fairly reactive making them attractive starting compounds to convert into amides. The first, C8H12N6O2S, contains one azide group with an Nα—Nβ distance of 1.229 (2) Å and an Nβ—Nγ distance of 1.128 (2) Å. The second, C8H11N9O2S, contains two azide groups with an average Nα—Nβ distance of 1.249 (2) Å and an average Nβ—Nγ distance of 1.132 (2) Å. Each compound contains a bulky protecting group (dimethylaminosulfonyl) which can be easily removed under mildly acidic conditions.

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BELLETÊTE, MARISE. „« ON N’A PLUS LES CONTES QUE L’ON AVAIT »“. Dossier 43, Nr. 3 (04.09.2018): 41–55. http://dx.doi.org/10.7202/1051085ar.

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Présenté comme un « antépisode moderne au conte de Cendrillon », le roman Javotte de Simon Boulerice s’inscrit dans le courant des variations cendrillonesques, en référant aux versions de Charles Perrault et des frères Grimm, ainsi qu’à l’adaptation filmique de Walt Disney. Toutefois, il a la particularité de se recentrer plutôt sur le personnage de la demi-soeur, « tirée d’un conte de fées, mais catapultée dans son xxie siècle » (Javotte, p. 105), qui est tiraillée entre sa méchanceté et le fantasme obsessif de ressembler à une princesse. L’imaginaire archaïque du conte nourrissant l’intrigue y est ainsi détourné par la narratrice entretenant un rapport trouble avec ces oeuvres. Dans cet article, l’auteure cherche plus particulièrement à dégager la vision subversive et parodique que le roman propose de l’éclatement de la mémoire des contes merveilleux à notre époque, où l’« [o]n n’a plus les contes que l’on avait » (Javotte, p. 105), tout en montrant comment leur accumulation participe à l’ambiguïté identitaire de la narratrice, qui cherche simultanément à s’y comparer et à les mettre à mal.

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Omontese, Bobwealth Oakina, Abdulmujeeb Bode Adewuyi, Peter Ibrahim Rekwot, Agnes Ifeyinwa Nwannenna und Joseph Sankey Rwuaan. „Effet de l’acide ascorbique sur le taux de fécondation des brebis Yankasa après synchronisation de l’œstrus“. Revue d’élevage et de médecine vétérinaire des pays tropicaux 70, Nr. 1 (20.09.2017): 9. http://dx.doi.org/10.19182/remvt.31390.

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L’objectif de cette étude était d’évaluer les effets d’une administration d’acide ascorbique (AA) sur le taux de fécondation de brebis dont les chaleurs étaient induites par deux traitements à base de progestogènes. Des brebis de race Yankasa (n = 64) ont été réparties de façon égale en deux groupes. Dans l’un, les brebis ont été traitées avec un dispositif intravaginal de libération continue du médicament (CIDR). Dans l’autre, les brebis ont été traitées avec 45 mg d’acétate de fluorogestone (FGA) au moyen d’une éponge vaginale. Après le retrait des progestogènes, les brebis de chaque groupe exprimant des chaleurs ont été réparties en quatre sous-groupes : CIDR témoin (CDNN, n = 12), CIDR plus AA (CDAA, n = 11), FGA témoin (FGNN, n = 13) et FGA plus AA (FGAA, n = 12). La détection des chaleurs a été réalisée au moyen de béliers sexuellement actifs et laissés libres de s’accoupler avec les femelles. Le taux d’expression des chaleurs n’a pas différé entre les sous-groupes. L’intervalle entre le retrait des dispositifs et l’apparition des chaleurs a été significativement (p < 0,05) plus court chez les brebis du groupe FGA que chez celles du groupe CIDR (respectivement 30,35 ± 2,72 et 48,56 ± 7,52 heures). La durée de l’oestrus n’a pas différé (p < 0,05) entre les traitements (FGA 37,22 ± 4,22 et CIDR 39,75 ± 2,51 heures). Les taux de fécondation ont été comparables entre sous-groupes. En conclusion, l’administration d’AA lors du retrait des dispositifs progestogéniques n’a pas amélioré le taux de fécondation des brebis Yankasa.

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Dioszegi, I., A. Veres, W. Enghardt und H. Prade. „Investigation of low-spin states of140Ce in the (n,n'γ) reaction and within the shell model“. Journal of Physics G: Nuclear Physics 11, Nr. 7 (Juli 1985): 853–65. http://dx.doi.org/10.1088/0305-4616/11/7/010.

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Feng, Yicheng. „Estimate of a nonflow baseline for the chiral magnetic effect in isobar collisions at RHIC“. EPJ Web of Conferences 276 (2023): 06013. http://dx.doi.org/10.1051/epjconf/202327606013.

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Recently, STAR reported the isobar (4496Ru + 4496Ru, 4096Zr + 4096Zr) results for the chiral magnetic effect (CME) search. The Ru+Ru to Zr+Zr ratio of the CME-sensitive observable Δγ, normalized by elliptic anisotropy (υ2), is observed to be close to the inverse multiplicity (N) ratio. In other words, the ratio of the NΔγ/υ2 observable is close to the naive background baseline of unity. However, nonflow correlations are expected to cause the baseline to deviate from unity. To further understand the isobar results, we decompose the nonflow contributions to NΔγ/υ2 (isobar ratio) into three terms and quantify each term by using the nonflow in υ2 measurement, published STAR data, and HIJING simulation. From these studies, we estimate a nonflow baseline of the isobar ratio of NΔγ/υ2 for the CME and discuss its implications.

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Young, P. G., J. W. Davidson und D. W. Muir. „Evaluation of the7Li(n, n’t)4He Cross Section for ENDF/B-VI and Application to Uncertainty Analysis“. Fusion Technology 15, Nr. 2P2A (März 1989): 440–48. http://dx.doi.org/10.13182/fst89-a39739.

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Watanabe, Yukinobu, Weili Sun, Kazuyuki Ogata, Michio Kohno und Mitsuji Kawai. „Semiclassical Distorted Wave Model Analysis of Inclusive (N, N’x) Reactions for Incident Energies up to 400 MeV“. Journal of Nuclear Science and Technology 39, sup2 (August 2002): 750–53. http://dx.doi.org/10.1080/00223131.2002.10875206.

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Chanier, Paul. „Le sophisme des n dimensions et son dépistage dans l’analyse économique“. Économie appliquée 46, Nr. 2 (1993): 147–78. http://dx.doi.org/10.3406/ecoap.1993.2332.

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Dans un espace non homogène ou à plus de trois dimensions, les notions d’angle et de distance euclidienne ne sont pas interprétables. On montre comment cette idée a été occultée par diverses habitudes mathématiques et philosophiques, et en particulier comment le sens du théorème de Frobenius-Peirce, qui établit cette impossibilité, n’a pas été généralement compris. Les quaternions sous forme matricielle, dont le fonctionnement est analysé à l’aide de progrès récents, sont la forme la plus complète du calcul vectoriel et révèlent la nature sophistique de certaines généralisations. Il est montré que certains modèles de dynamique économique dépendent d’une distance euclidienne purement arbitraire. Plus généralement les fausses analogies avec l’espace perceptif homogène sont étudiées.

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Mnukhin, Lev. „Марина цветаева и поэты пушкинской поры“. Modernités Russes 14, Nr. 1 (2014): 261–81. http://dx.doi.org/10.3406/modru.2014.1012.

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Marina Tsvetaeva n’a subi aucune influence directe sur sa poésie et n’a rien emprunté de significatif à ses prédécesseurs de la fin du XVIIIe et du XIXe siècles. En même temps ils faisaient tous partie de ses lectures, en particulier presque tous ceux de la pléiade pouchkinienne. L’exposé représente une sorte de voyage à travers les textes de Tsvetaeva, avec toute une série de «haltes» et chacune est consacrée à un poète pouchkinien. Tsvetaeva aimait et appréciait beaucoup G. R. Derjavine et V. A. Joukovski, elle connaissait les oeuvres de K. N. Batiouchkov, D. V. Davydov, P. A. Viazemski, F. N. Glinka, V. G. Benediktov, I. I. Kozlov, A. Koltzov, I. A. Krylov, etc. Sont cités des exemples de parenté spirituelle ou stylistique de leur poésie avec celle de Tsvetaeva. Tenant compte de l’angle de lecture donné, on a proposé des réminiscences, mentions, citations et associations diverses, sonores en particulier, les plus intéressantes et significatives, du point de vue de l’auteur de l’article.

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Kumari, Myneni Krishna. „TALE OF HANUMA?N’S ENCOUNTER WITH KA?LANE?MI: GLEANINGS THROUGH LITERATURE AND ART“. JOURNAL OF HISTORY, ART AND ARCHAEOLOGY 2, Nr. 1 (2022): 103–14. http://dx.doi.org/10.47509/jhaa.2022.v02i01.09.

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Hanuman is well known throughout India and beyond its frontiers as the saviour of the distressed, as the epitome of the great strength, courage and as a loyal, faithful, and a staunch devotee of Ra?ma and as the hero of the epic, Ra?ma?ya?a. He is represented in the literature and visual arts as a great leader of the monkey army who helped Ra?ma on different occasions such as in the search for Si?ta who was abducted by the demon-king Ra?va?a deceitfully from Pañchavat?i in the absence of Ra?ma and his brother; in the battle against Ra?va?a and in bringing back Lakshman? a to consciousness when he swooned in the battle-field, by bringing the medicinal herbs from Dro??a?dri mountains etc., Because of the multifarious activities performed by Hanuma?n that helped Ra?ma, very soon he became not only the favourite hero of the public but also an individual god of great importance for whom several temples or shrines were built all over India. In South India particularly during the medieval times, he became the central hero of vernacular literature, especially folk stories, and he is well represented in the temple sculptures. Although Va?lmi?ki’sRa?ma?ya?a was popular in its usage we find its translations in different South Indian languages with some additions and omissions. Owing to the interpolations in Va?lmi?ki’s work and the composition of Ra?ma?ya?a in different vernaculars, prince Ra?ma, son of Da?aratha came to be interpreted as an incarnation of the god Vishn? u and accordingly we find the portrayal of the human-like figure of Ra?ma holding a bow and an arrow in his two hands along with the other incarnation forms of Vish?u in temple sculptures. On the other hand, Hanuma?n is shown mostly as acknowledging the divine power of Ra?ma or in the act of performing the heroic exploits as the leader of the va?naras. It is proposed to discuss the portrayal of Hanuma?n in art, especially his encounter with the demon Ka?lane?mi.

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Prokop, Marta, Justyna Czarnecka und Maria J. Milewska. „Nγ-Alkyl Derivatives of L-Glutamine As Inhibitors of Glutamine- Utilizing Enzymes“. Zeitschrift für Naturforschung C 64, Nr. 9-10 (01.10.2009): 631–36. http://dx.doi.org/10.1515/znc-2009-9-1005.

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A general, facile method to synthesize the N'-alkyl and N',N'-dialkyl derivatives of Lglutamine 1a-d from L-glutamic acid as a starting substrate is presented. The obtained compounds are shown to inhibit three different glutamine-utilizing enzymes, namely: glutaminase, γ-glutamyl transpeptidase, and glucosamine-6-phosphate synthase, with inhibitory constants within the millimolar range

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Iqbal, Hamid, Muhammad Usman und Muhammad Nawaz Shahzad. „Economic Strategies of Pakistan Muslim League (N): An Analysis 2013-18“. Global Political Review VII, Nr. I (30.03.2022): 11–19. http://dx.doi.org/10.31703/gpr.2022(vii-i).02.

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The PML-N’s (2013) Government witnessed a rapid change in the economy as several economic strategies were implanted in different ways. The study will focus on monetary policy, public debts, and loan records taken either locally or internationally. Some works enriched the position of the economy by making loans to some extent, but loans played a weak role in the economy of Pakistan generally. Qualitative and Quantitative research has been conducted to examine the circumstances and to draw a rational conclusion. The study observes that the living standard of people has grown well, but due to the vague strategy of the government, it faced problems in the true sense of economic growth. Taxes were imposed to meet the impositions of the IMF. This study recommends that government should reserve a special budget to meet their loan installments.Persons having taxable income should be brought to the tax circle.

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Yates, Steven W., Sharmistha Mukhopadhyay, Benjamin P. Crider und Erin E. Peters. „Studying collective nuclear excitations with fast neutrons: a comparison of 76Ge and 76Se“. EPJ Web of Conferences 178 (2018): 02008. http://dx.doi.org/10.1051/epjconf/201817802008.

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The low-lying, low-spin level structures of 76Ge and 76Se were studied with the (n,n'γ) reaction. Gamma-ray excitation function and angular distribution measurements were performed, and level spins, level lifetimes, γ-ray intensities, and multipole mixing ratios were determined. Large observed B(E2) values support the identification of low-lying band structures.

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Komatsu, Takao, und Haotian Ying. „The p-Numerical Semigroup of the Triple of Arithmetic Progressions“. Symmetry 15, Nr. 7 (29.06.2023): 1328. http://dx.doi.org/10.3390/sym15071328.

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For given positive integers a1,a2,⋯,ak with gcd(a1,a2,⋯,ak)=1, the denumerant d(n)=d(n;a1,a2,⋯,ak) is the number of nonnegative solutions (x1,x2,⋯,xk) of the linear equation a1x1+a2x2+⋯+akxk=n for a positive integer n. For a given nonnegative integer p, let Sp=Sp(a1,a2,⋯,ak) be the set of all nonnegative integer n’s such that d(n)>p. In this paper, by introducing the p-numerical semigroup, where the set N0\Sp is finite, we give explicit formulas of the p-Frobenius number, which is the maximum of the set N0\Sp, and related values for the triple of arithmetic progressions. The main aim is to determine the elements of the p-Apéry set.

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Lessard, Andrée, und Jonathan Bolduc. „Les effets d’un programme d’entrainement lecture-musique sur le développement du vocabulaire et de la morphosyntaxe d’élèves francophones de 2e année“. Articles 51, Nr. 2 (09.01.2017): 715–31. http://dx.doi.org/10.7202/1038599ar.

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Le but de la présente étude était d’évaluer les effets de deux programmes (lecture seulement et lecture-musique) sur le développement du vocabulaire et des habiletés morphosyntaxiques d’élèves de 2e année. Un design quasi expérimental avec prétest et post-test a été employé. Les sujets (n = 94) ont été divisés en trois groupes : lecture seulement (n = 44), lecture-musique (n = 34) et contrôle (n = 16). Les programmes expérimentaux ont pris place pendant quatre mois à raison de trois périodes par cycle de 10 jours. Même si aucune différence significative n’a pu être observée entre les groupes au prétest ou au post-test, il semblerait que le programme lecture-musique a eu un effet favorable sur le vocabulaire réceptif. Des pistes d’explications sont fournies dans la discussion.

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Kispéter, Mónika. „Los grupos consonánticos /-n’r-/ y /-l’r-/ en el futuro : simple y en el condicional simple del castellano“. Acta Hispanica 14 (01.01.2009): 89–98. http://dx.doi.org/10.14232/actahisp.2009.14.89-98.

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The aim of this article is the investigation of certain Spanish conjugated verb forms in future tense and in conditional mode. These forms during the Middle Age had more verb stems; as opposed to this, in Modern Spanish only one of these stems is found. These forms are the result of the medieval Spanish speakers’ intent to avoid the “inconvenient” secondary consonantal groups /-n’r-/ and /-l’r-/ that had emerged as the consequence of syncope. Four different verb stems were e. g. in the case of the verb venir: (1) there is no change, so the secondary consonantal group is not dissolved (venré); (2) assimilation occurred, the /n/ assimilated to the /r/ (verré); (3) metathesis was produced, which means that the two sounds (verné); (4) there is an epenthesis, between the /n/ or the /l/ and the /r/ inserts a phoneme (vendré). The former case is the sonly applied one in Modern Spanish. The article attempts to explain why only this one form is used in the case of the verbs, although there are examples of the other phenomena in other Modern Spanish words. The article also gives explanation of the formation of these words. Furthermore, all four verb stems are examined from the point of view of its syllable structure, the universal sonority hierarchy ad morphology.

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Zeitschriftenartikel zum Thema „(n, n’γ)“

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