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Nonlinear Instability of the Two-Dimensional Striation Model About Smooth Steady States
Besse, C.,Degond, P.,Hwang, HJ.,Poncet, R. Marcel Dekker, Inc 2007 Communications in partial differential equations Vol.32 No.7
<P> The two-dimensional striation model consists of a nonlinear system of PDE's which arises in the modeling of the ionospheric plasma. The local-in-time existence of strong solutions is first proved using Banach's fixed point theorem. Then, under physically relevant assumptions, the system is shown to be nonlinearly unstable as soon as it is linearly unstable. Moreover, the instability occurs before the possible blow-up time of the solution. The proof relies on an earlier work of Hwang and Guo (2003). The first step of the proof is to investigate under which conditions the linearized system is unstable and to prove that its spectrum is bounded, by means of a variational formulation. The second one consists in constructing a family of solutions depending on the parameter &dgr; measuring the smallness of the perturbation to the steady-state. Thanks to the boundedness of the linearized spectrum, this family of solutions is shown to be unstable by means of a power series expansion in &dgr;.</P>
CEP-stable, sub-6 fs, 300-kHz OPCPA system with more than 15 W of average power.
Prinz, Stephan,Haefner, Matthias,Teisset, Catherine Yuriko,Bessing, Robert,Michel, Knut,Lee, Yeon,Geng, Xiao Tao,Kim, Seungchul,Kim, Dong Eon,Metzger, Thomas,Schultze, Marcel Optical Society of America 2015 Optics express Vol.23 No.2
<P>We report on a CEP-stable OPCPA system reaching multi-GW peak powers at 300 kHz repetition rate. It delivers 15 W of average power, over 50 ?J of compressed pulse energy and a pulse duration below 6 fs. By implementing an additional pump-seed-synchronization, the output parameters are stabilized over hours with power fluctuations of less than 1.5%.</P>
Nuclear Data Performance Testing Using Sensitive, but Less Frequently Used ICSBEP Benchmarks
J. Blair Briggs,John D. Bess 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The International Criticality Safety Benchmark Evaluation Project (ICSBEP) has published the International Handbook of Evaluated Criticality Safety Benchmark Experiments annually since 1995. The Handbook now spans over 51,000 pages with benchmark specifications for 4,283 critical, near critical, or subcritical configurations; 24 criticality alarm placement/shielding configurations with multiple dose points for each; and 200 configurations that have been categorized as fundamental physics measurements relevant to criticality safety applications. Benchmark data in the ICSBEP Handbook were originally intended for validation of criticality safety methods and data; however, the benchmark specifications are now used extensively for nuclear data testing. There are several, less frequently used benchmarks within the Handbook that are very sensitive to thorium and certain key structural and moderating materials. Calculated results for many of those benchmarks using modern nuclear data libraries suggest there is still room for improvement. These and other highly sensitive, but rarely quoted benchmarks are highlighted and data testing results provided using the Monte Carlo N-Particle Version 5 (MCNP5) code and continuous energy ENDF/B-V, VI.8, and VII.0, JEFF-3.1, and JENDL-3.3 nuclear data libraries.
Synthesis, Characterization and Biological Evaluation of Triclosan Grafted onto Cellulosic Fibers
Khaldi Zineb,Nzambe Ta Keki Jean Kerim,Besse Claire,Ouk Tan-Sothéa,Hadj-Bouazza Amel,Zerrouki Rachida 한국섬유공학회 2018 Fibers and polymers Vol.19 No.9
With the increased risk of disease transmissions and cross-infection caused by microorganisms, the control of microbial infections becomes a very important issue in modern societies. Moreover, with the emergence of antibio-resistant bacterial strains, it is necessary to control the bacterial growth. One of ways to limit the bacterial proliferation is to develop antimicrobial surfaces. The present work describes the synthesis process of a direct linking of propargyled Triclosan to a modified Kraft Pulp. Propargylated Triclosan, and azidated Kraft Pulp were linked in the presence of Cu(I) catalyst, a type of Huisgen’s 1,3-dipolar azide-alkyne cycloaddition reaction, leading to the formation of Triclosan linked to kraft Pulp fibers. The modified Kraft Pulp fibers are characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). This novel material has been investigated for its antibacterial properties against Escherichia coli, Staphylococcus aureus, Bacillus cereus and Pseudomonas aeruginosa. The developed material showed an important antibacterial activity. Although Triclosan is covalently grafted onto Kraft Pulp, its antibacterial properties are maintained.
Blackhall, Fiona,Kim, Dong-Wan,Besse, Benjamin,Nokihara, Hiroshi,Han, Ji-Youn,Wilner, Keith D.,Reisman, Arlene,Iyer, Shrividya,Hirsh, Vera,Shaw, Alice T. Elsevier 2014 JOURNAL OF THORACIC ONCOLOGY Vol.9 No.11
<P>Introduction: The main objective of the current post hoc analysis was to compare patient-reported outcomes between crizotinib (N = 172) and chemotherapy subgroups (pemetrexed [N = 99] and docetaxel [N = 72]) in previously treated patients with advanced ALK-positive non-small-cell lung cancer, in PROFILE 1007 study (Pfizer; NCT0093283). Methods: Patient-reported outcomes were assessed at baseline, day 1 of each cycle, and end of treatment. General health status was measured using the EuroQol-5D visual analog scale and health utility index scores were assessed using the EuroQol-5D descriptive system. Functioning, lung cancer symptoms, and global quality of life (QOL) were assessed using European Organisation for Research and Treatment of Cancer QLQ-C30 and the QLQ-LC13 lung cancer module. Repeated measures mixed-effects analyses compared overall scores and change from baseline scores, controlling for baseline scores. Results: The overall mean EQ-5D health utility index scores (95% CI) on treatment were significantly greater (p < 0.05) for crizotinib (0.82 [0.79-0.85]) than for chemotherapy (0.73 [0.70-0.77]; 0.74 [0.70-0.79] for pemetrexed and 0.66 [0.58-0.74] for docetaxel). A significantly greater improvement from baseline was observed with crizotinib versus pemetrexed and versus docetaxel treatment groups for general health status, physical functioning, global QOL, dyspnea, fatigue, and pain. Improvement rates for fatigue, cough, pain, dyspnea, and global QOL were significantly greater on crizotinib compared with pemetrexed and docetaxel, respectively. Worsening rates for diarrhea and constipation were higher with crizotinib. Conclusion: The benefits of crizotinib in improving symptoms and QOL are demonstrated regardless of whether the comparator is pemetrexed or docetaxel.</P>