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Exotic break-up modes in heavy ion reactions up to Fermi energies

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Nuclear Science and Techniques 2015年第2期26卷 124-130页

作者： Maria Colonna Virgil Baran Stefano Burrello Mariangela Di Prima Paolo Napolitani Carmelo Rizzo INFN-Laboratori Nazionali del sud Via S Sofia 62Catania I-95123Italy NIPNE-HH Bucharest UniversityBucharest 077125Romania IPN CNRS/IN2P3Universite' Paris-Sud 11Orsay cedex 91406France

We discussed recent studies, within the framework of transport theories, on heavy ion reactions between charge asymmetric systems, from low up to Fermi energies. We concentrated on the analysis of ternary breakup events of dynamical origin occurring in semi-central reactions, where the formation of excited systems in various conditions of shape, excitation energy and spin is observed. At beam energies around 20 A Me V, we showed how this fragmentation mode emerges from the combined action of surface(neck) instabilities and angular momentum effects, leading to the observation of three aligned massive fragments in the exit channel. At Fermi energies, a transition towards a prompt emission of small fragments from the neck region with larger relative velocity with respect to projectile and target remnants is observed. We also focus on isospin sensitive observables, aiming at extracting information on the density dependence of the isovector part of the nuclear effective interaction and of the nuclear symmetry energy.

关键词：重离子反应费米能量不对称系统情调有效相互作用激发系统不稳定性分散模式

Mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK

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Chinese Physics C 2012年第8期36卷 756-760页

作者：白莎 P. Bambade 王逗高杰 M. Woodley M. Masuzawa Institute of High Energy Physics (IHEP) LAL Univ Paris-Sud CNRS/IN2P3 Orsay France SLAC Menlo Park California USA KEK Tsukuba Ibaraki Japan

The ATF2 project is the final focus system prototype for the ILC and CLIC linear collider projects, with the purpose of reaching a 37nm vertical beam size at the interaction point. In the nanometer beam size regime, higher order multipoles in magnets become a crucial point for consideration. The strength and rotation angle of the ATF2 QEA magnets were reconstructed from the IHEP measurements and compared with the KEK ones to be identical. Based on the study of the skew multipoles sensitivity, we report on the analysis of the possible mitigation of the measured multipoles. A suggestion is given which will benefit the ATF2 present commissioning to reach the goal beam size, and also the reduced β optics in future.

关键词： ATF2 beam size higher order multipoles QEA magnets

Nanoscale image of the drug/metal mono-layer interaction:Tapping A FM-IR investigations

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Nano Research 2020年第4期13卷 1020-1028页

作者： Natalia Piergies Alexandre Dazzi Ariane Deniset-Besseau Jeremie Mathurin Magdalena Ocwieja Czeslawa Paluszkiewicz Wojciech M.Kwiatek Institute of Nuclear Physics Polish Academy of SciencesPL-31342 KrakowPoland Laboratoire de Chimie Physique(LCP) CNRS UMR 8000Univ.of Paris-SudUniversite Paris-Saclay91405 OrsayFrance Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8PL-30239 KrakowPoland

The application of metal nanoparticles as an efficient drug delivery system is one of the directions of cancer therapy ***,this strategy requires precise information about how the drug interacts with the applied *** this study,atomic force microscopy combined with infrared spectroscopy(AFM-IR)was used for the first time to investigate the erlotinib adsorption structure on two different types of 15 nm metal nanoparticle mono-layers,namely,silver nanoparticle(AgNP)and gold nanoparticle(AuNP)*** the metal nanoparticles are loosely bound samples,only the tapping AFM-IR mode is suitable for the collection of IR maps and spectra for such a *** obtained results indicated the relevance of the AFM-IR technique for characterizing drug interactions with a metal mono-layer *** investigated drug interacts with the AgNPs mainly through phenyl rings and methoxy moieties,while quinazoline,amino,and ethoxy moieties appear to be farther from the *** the AuNPs,the interaction occurs through both the phenyl ring and the quinazoline ***,the aliphatic groups of erlotinib directly participate in this *** novelty of the present work is also related to the use of the tapping AFM-IR mode to study metal NP mono-layers with a drug adsorbed on *** collected IR maps for the most enhanced erlotinib bands show specific areas with very high signal *** connection between these areas and the"hot spots"typical for the surface plasmon resonance phenomenon of metals is considered.

关键词： metal nanoparticle mono-layer drug's adsorption infrared nanospectroscopy atomic force microscopy erlotinib

Long-lived birds suffer less from oxidative stress

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Avian Research 2018年第4期9卷 363-369页

作者： Canwei Xia Anders Pape Moller Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering College of Life SciencesBeijing Normal UniversityBeijingChina Ecologie Systématique Evolution UniversitéParis-SudCNRSAgroParisTechUniversitéParis-Saclay91405 Orsay CedexFrance

Background: Oxidative stress, caused by an imbalance between reactive oxygen species and antioxidants, is thought to be an important intrinsic mechanism for aging. Ecologists have tested this hypothesis in birds, although the evidence supporting the link between oxidative stress and lifespan has so far been ambiguous. Two previous studies based on a wide range of different free-living bird species provided contradictory findings: antioxidants were negatively associated with survival rate in one study, but positively associated with longevity in ***: In this study, we identified possible shortcomings in previous research, and then used the comparative methods to test whether long-lived birds experience less oxidative stress reflected by four blood redox state markers(total antioxidant status, uric acid, total glutathione, malondialdehyde) based on data for 78 free-living ***: Relatively long-lived bird species had high levels of antioxidants(total antioxidant status, total glutathione) and low levels of reactive oxygen species(malondialdehyde). These associations were independent of statistical control for any effects of body mass, sampling effort and similarity among taxa due to common phylogenetic ***: The direction of these associations is consistent with the oxidative stress theory of aging.

关键词： Ageing Antioxidant Birds Longevity Oxidative stress Sampling effort

Paleoclimate and Paleoenvironment of Gonghe Basin, Qinghai-Tibet Plateau, During the Lastdeglacial: Weathering, Erosion and Vegetation Cover Affect Clay Mineral Formation

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Acta Geologica Sinica(English Edition) 2014年第2期88卷 647-660页

作者： SUN Qingfeng Christophe COLIN Faculty of Geography Northwest Normal University Laboratoire des Interactions et Dynamique des Environnements de Surface (IDES) UMR 8148CNRS Université de Paris-Sud

With the analysis of the sources and formation mechanism of the clay minerals in the sediment core from the Dalianhai lake in the Gonghe Basin,northeastern Tibet-Qinghai Plateau,clay mineral composition proxies,grain-size and carbonate contents have been employed for high-resolution study in order to reconstruct East Asian Summer Monsoon （EASM） over the northeastern Tibet-Qinghai Plateau during the *** study also extended to establish a relationship between vegetation cover changes and erosion during the last 14.5 ka with pollen record and clay mineral ***/kaolinite and smectite/（illite＋chlorite） ratios allow us to assess hydrolysis conditions in lowlands and/or physical erosion process in highlands of the Gonghe *** 12.9 Cal ka BP,both mineralogical ratios show low values indicative of strong physical erosion in the basin with a dominant cold and dry *** 12.9 Cal ka BP,an increase in both mineralogical ratios indicates enhanced chemical weathering in the basin associated with a warm and humid *** beginning of Holocene is characterized by high smectite/（illite＋chlorite） and smectite/kaolinite ratios that is synchronous as with deposition of many peat laminae,implying the best warm and humid conditions specifically between 8.0 to 5.5 Cal ka *** time interval after 5.0 Cai ka BP is characterized by a return to high physical erosion and low chemical weathering with dry climate conditions in the *** variations of clay mineral assemblages with previous pollen results,we observe a rapid response in terms of chemical weathering and physical erosion intensity to a modification of the vegetation cover in the basin.

关键词： clay minerals vegetation Gonghe Basin Tibet-Qinghai Plateau Asian monsoon Holocene

Laparoscopic liver resections for hepatocellular carcinoma:Current role and limitations

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World Journal of Gastroenterology 2014年第17期20卷 4892-4899页

作者： Martin Gaillard Hadrien Tranchart Ibrahim Dagher Department of Minimally Invasive Digestive Surgery Antoine Béclère HospitalAP-HPParis-Sud University92141 Clamart cedexFrance

Liver resection for hepatocellular carcinoma(HCC)is currently known to be a safer procedure than it was before because of technical advances and improvement in postoperative patient management and remains the first-line treatment for HCC in compensated *** aim of this review is to assess current indications,advantages and limits of laparoscopic surgery for HCC *** also discussed the possible evolution of this surgical approach in parallel with new technologies.

关键词： Hepatocellular carcinoma Laparoscopic liver resection Hepatectomy Minimally invasive Review Laparoscopic resection of gastrointestinal

Comparison of head size and bite force in two sister species of parrotbills

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Avian Research 2018年第1期9卷 27-32页

作者： Xiaodong Rao Canchao Yang Laikun Ma Jianwei Zhang Wei Liang Anders Pape Moller Ministry of Education Key Laboratory for Ecology of Tropical Islands College of Life Sciences Hainan Normal University Haikou 571158 China Ecologie Systematique Evolution Universite Paris-Sud CNRS AgroParisTech Universite Paris-Saclay 91405 Orsay Cedex France

Background: Brain size is associated with morphological evolution and behavioral flexibility because animals with large brain size tend to utilize new resources and colonize novel environments more ***, animals with larger brain size should possess larger distribution *** size is strongly positively correlated with head size in birds, but also with prey size and vocalizations, because individuals with large heads eat large food items and produce high frequency ***: To test if there exists an association between head morphology and bite performance, we compared head size and bite force in two sympatric sister species of parrotbills, Ashy-throated Parrotbill(Paradoxornis alphonsianus) and Vinous-throated Parrotbill(***), which both originated from the Himalayan area, but differ significantly in their distribution ***: In Guizhou, southwestern China, the Ashy-throated Parrotbill with a restricted distribution range had smaller heads whilst the Vinous-throated Parrotbill with a large distribution range had larger ***, there were no differences in head size between Ashy-throated Parrotbills and allopatric populations of Vinous-throated Parrotbills(Jiangxi and Hebei).Furthermore, the tendency of variation in bite force was opposite to that in head size with populations with larger head size having weaker bite ***: We showed that there are no differences in head size between the Ashy-throated Parrotbill and allopatric populations of Vinous-throated Parrotbill, which provides evidence for the hypothesis that differences in head size in the Guizhou populations of two sister species are probably the result of local adaptation rather than *** study has implications for avian dispersal and adaption related to head size such as diet ecology and vocalizations.

关键词： Behavioral flexibility Distribution range Paradoxornis alphonsianus Paradoxornis webbianus Sister species

Naphthalene oxidation by different nonthermal electrical discharges at atmospheric pressure

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Plasma Science and Technology 2019年第5期21卷 151-161页

作者： M REDOLFI N BLIN-SIMIAND X DUTEN S PASQUIERS K HASSOUNI LSPM CNRS-UPR3407Universite Paris 13 Sorbonne Paris Cite99 Avenue J.B.ClementF-93430VilletaneuseFrance Laboratoire de Physique des Gaz et des Plasmas CNRS-UMR857&University Paris-SudBat.210F-91405Orsay CedexFrance

Gaseous naphthalene has been removed by air plasma generated by pulsed corona discharges at 100°C(LSPM)and dielectric barrier discharges(DBD)up to 250℃(LPGP)in different reactors *** has been chosen as one of unbumed hydrocarbon present in exhaust gas engine during the cold start of *** comparison between the different discharge geometries has been possible using the specific input energy(SIE)as relevant parameter for pollutant removal process control considering the differences in the electrical characteristics and the differences of gas *** best naphthalene degradation is obtained in the wire-to cylinder(WTC)corona discharge and the stem-to-cylinder DBD with an energy costβrespectively of 10 and 20 J L^-*** main by-products issues of the naphthalene oxidation are CO2 and CO reaching 45%in Multi-Pin-to-Plan corona *** detected polyaromatic hydrocarbons in the gas phase(few ppm)and in the solid phase deposited in the *** introduction of water in the discharges promotes the naphthalene degradation by OH-atom,which has better oxidising power than O-atom in dry air.

关键词： corona discharges DBD naphtalene engine emissions

An Implicit Degree Condition for Relative Length of Long Paths and Cycles in Graphs

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Acta Mathematicae Applicatae Sinica 2016年第2期32卷 365-372页

作者： Jun-qing CAI Hao LI School of Management Qufu Normal University L.R.I UMR 8623 CNRS and Universit'e Paris-Sud 11 Institute for Interdisciplinary Research Jianghan University

For a graph G, we denote by p（G） and c（G） the number of vertices of a longest path and a longest cycle in G, respectively. For a vertex v in G, id（v） denotes the implicit degree of v. In this paper, we obtain that if G is a 2-connected graph on n vertices such that the implicit degree sum of any three independent vertices is at least n ＋ 1, then either G contains a hamiltonian path, or c（G）〉 p（G） - 1.

关键词： Hamiltonian path dominating cycles implicit degree longest paths longest cycles