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Competition between fusion-evaporation and multifragmentation in central collisions in ^(58)Ni+^(48)Ca at 25A MeV

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Nuclear science and Techniques 2013年第5期24卷 82-88页

作者： FrANCALANZA L ABBONDANNO U AMOrINI F BArLINI s BINI M BOUGAULT r BrUNO M CArDELLA G CAsINI G AGOsTINO M D' De FILIPPO V De sANCTIs J GErACI E GIUssANI A GrAMEGNA F GUIOT B KrAVCHUK V La GUIDArA E LANZALONE G Le NEINDrE N MAIOLINO C MArINI P MOrELLI L OLMI A PAGANO A PAPA M PIANTELLI s PIrrONE s POLITI G POGGI G POrTO F rUssOTTO P rIZZO F VANNINI G VANNUCCI L INFN Laboratori Nazionali del sud-LNs Catania 95123Italy Dipartimento di Fisica Universitàdi Catania I-95129Italy INFN sezione di Trieste Trieste I-34127Italy Dipartimento di Fisica Universitàdi FirenzeINFN Sezione di Firenze 1-50139Italy LPC Caen IN2P3-CNRS/ENSICAEN and UniversitéF-14050 Caen cedex 5-140France Dipartimento di Fisica Universitàdi Bologna and INFN Sezione di Bologna 4-50121Italy INFN sezione di Catania I-95129 Italy INFN sezione di Firenze I-50139 Italy Dipartimento di Fisica Universitàdi Milano and INFN Sezione di Milano1-20126Italy INFN Laboratori Nazionali di Legnaro 1-35020 Italy Centro siciliano di Fisica Nucleare e struttura della Materia Catania 1-95129Italy UniversitàKore Enna 1-94100Italy

The experimental data concerning the58Ni+48Ca reaction at Elab(Ni)=25A MeV,collected by using the CHIMErA 4π device,have been analyzed in order to investigate the competition among different reaction mechanisms for central collisions in the Fermi energy *** a main criterion for centrality selection we have chosen the flow angle(flow) method,making an event-by-event analysis that considers the shape of events,as it is determined by the eigenvectors of the experimental kinetic-energy *** the selected central events(flow >60°) some global variables,good to characterize the pattern of central collisions have been *** main features of the reaction products were explored by using different constraints on some of the relevant observables,like mass and velocity distributions and their *** emphasis was devoted,for central collisions,to the competition between fusion-evaporation processes with subsequent identification of a heavy residue and a possible multifragmentation mechanism of a well defined(if any) transient nuclear *** evolution of the system and pre-equilibrium emission were taken into account by simulating the reactions in the framework of transport *** approaches have been envisaged(dynamical stochastic BNV calculations + sequential sIMON code,QMD,CoMD,etc.).Preliminary comparison of the experimental data with BNV calculations shows reasonable agreement with the assumption of sequential multifragmentation emission in the mass region of IMFs close to the heavy *** deviations from sequential processes were found for those IMFs in the region of masses intermediate between the mass of heavy residues and the mass of light *** simulations are in *** experimental analysis will be enriched also by information obtained inspecting the IMF-IMF correlation function,in order to elucidated the nature of space-time decay property of the emitting source associated with events having

关键词：多重碎裂中心碰撞蒸发过程 MeV 竞争熔合国际货币基金组织事件分析

DIsPErsION rELATION AND LANDAU LEVELs OF INVErsION LAYEr sUBBAND ON p-HgCdTe

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science China Mathematics 1990年第10期33卷 1192-1200页

作者：褚君浩 r.sIZMANN F.KOCH National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 PRC Physik-Department E-16 T. U. München D-8046 Garching F. R. Germany

starting from Kane’s model and taking into account the surface electron spin-orbit interaction, we have derived the dispersion relation and Landau levels of inversion layer subband on narrow-gap semiconductors. The capacitance-voltage spectroscopy, magnetoconductivity oscillations and cyclotron resonance spectroscopy for the p-Hgsub>1-xsub>Cdsub>xsub> Te MIs structure sample at temperature 4.2 K have been measured. From the experimental data, the subband parameters and spin-orbit coupling intensity, which are involved in the expressions of subband dispersion relation and Landau levels, have been determined. As a result, the inversion layer electron subband dispersion relation and Landau level fan chart for HgCdTe as well as the zero field spin splitting effect, the shifting and the crossing effect of Landau levels have been described quantitatively.

关键词： narrow-gap semiconductors HgCdTe 2-dimensional electron gas subband Landau level.

CrIsPr/Cas9 editing of the polygalacturonase FaPG1 gene improves strawberry fruit firmness

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Horticulture research 2023年第3期10卷 201-210页

作者： Gloria López-Casado Cristina sánchez-raya Pablo D.ric-Varas Candelas Paniagua rosario Blanco-Portales Juan Muñoz-Blanco sara Pose Antonio J.Matas Jose A.Mercado Departamento de Botánica y Fisiología Vegetal Instituto de Hortofruticultura Subtropical y Mediterránea‘La Mayora’(IHSM-UMA-CSIC)Universidad de Málaga29071 MálagaSpain Departamento de Bioquímica y Biología Molecular Universidad de Córdoba14071CórdobaSpain

Firmness is one of the most important fruit quality traits in *** postharvest shelf life of this soft fruit is highly limited by the loss of firmness,where cell wall disassembly plays an important *** studies demonstrated that the polygalacturonase FaPG1 has a key role in remodelling pectins during strawberry *** this study,FaPG1 knockout strawberry plants have been generated using the CrIsPr/Cas9 system delivered via Agrobacterium *** independent lines,cv.“Chandler”,were obtained,and all of them were successfully edited as determined by PCr amplification and T7 endonuclease *** targeted mutagenesis insertion and deletion rates were analyzed using targeted deep *** percentage of edited sequences varied from 47%up to almost 100%,being higher than 95%for seven of the selected *** analyses showed that 7 out of the eight lines analyzed produced fruits significantly firmer than the control,ranging from 33 to 70%increase in *** was a positive relationship between the degree of FaPG1 editing and the rise in fruit *** changes were observed in other fruit quality traits,such as colour,soluble solids,titratable acidity or anthocyanin *** fruits showed a reduced softening rate during postharvest,displayed a reduced transpirational water loss,and were less damaged by Botrytis cinerea *** analysis of four potential off-target sites revealed no mutation *** conclusion,editing the FaPG1 gene using the CrIsPr/Cas9 system is an efficient method for improving strawberry fruit firmness and shelf life.

关键词： fir straw PG1

Air Basins of rio de Janeiro state, Brazil

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Journal of Water resource and Protection 2015年第10期7卷 781-791页

作者： rafael s. Barboza ricardo Valcarcel Ednaldo O. santos Carlos r. Pereira Laboratory of Catchment Basins Management Department of Environmental Sciences Forestry Institute Federal Rural University of Rio de Janeiro Seropédica Brazil Department of Agricultural Engineering and Environment School of Engineering Fluminense Federal University Niteroi Brazil

The air basin is a three-dimensional space which conducts and distributes winds over the catchment basins. In the state of rio de Janeiro (43,305 km2), 48% of the territory comprises the Atlantic slopes (the windward side) and 52% (the leeward side) suffers the influence of the Atlantic Ocean. On the windward side, 20% of the area includes 16 air basins, which influence the movement of humid air currents, affecting all of the windward regions and environmentally conditioning the leeward areas. The morphometric parameters of these air basins have been characterized: area of influence upwind (4 parameters), slope (5 parameters), and distribution zone (5 parameters), and they are grouped together in 5 units by similar functional identity, utilizing multivariable analysis, cluster method, with a Euclidian distance of 48%, significance level of 95%, and correlation coefficient of 0.7132. The management of environmental services within the hydro-graphic basins where 16 million people live is conditioned by these air basins, which could have their environmental planning perfected by this knowledge.

关键词： Landscape Fog Interception Water resources Watershed

special issue on quantum control Dedicated to the occasion of Prof. lan Petersen＇s 60th birthday

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Control Theory and Technology 2017年第3期15卷 161-162页

作者： Daoyi Dong shanon Vuglar Matthew r. James school of Engineering and Information Technology University of New South Wales Canberra Australia Guodong Shi Research School of Engineering Australian National University Australia Department of Chemistry Princeton University U.S.A. ArC Centre for Quantum Computation and Communication Technology Research School of Engineering Australian National University Australia

Quantum technology is recognized as one of the most promising directions for our future technologies. By exploiting the unique features of quantum effects, emerging quantum technology is rapidly progressing around the world including quantum computation, quantum communication, quantum metrology and quantum simulation. The development of quantum control plays a grounding role in enabling the preservation and manipulation of quantum states that are used in various quantum technologies. This special issue will focus on new development in relevant topics of estimation and control methods in quantum systems, and provide a forum for idea exchange in this dynamic research area. Particularly, lan r. Petersen, a key figure in the development of robust and quantum control theory, just turned 60 in the past year. We propose to celebrate this occasion with this special issue on quantum control, one of his main research focuses in the last fifteen years.

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recovery and grade prediction of pilot plant flotation column concentrate by a hybrid neural genetic algorithm

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International Journal of Mining science and Technology 2013年第1期23卷 69-77页

作者： F. Nakhaei M.r. Mosavi A. sam Department of Mining Engineering Shahid Bahonar Kerman University Kerman Iran Department of Electrical Engineering Iran University of Science and Technology Tehran Iran

Today flotation column has become an acceptable means of froth flotation for a fairly broad range of applications, in particular the cleaning of sulfides. Even after having been used for several years in mineral processing plants, the full potential of the flotation column process is still not fully exploited. There is no prediction of process performance for the complete use of available control capabilities. The on-line estimation of grade usually requires a significant amount of work in maintenance and calibration of on-stream analyzers, in order to maintain good accuracy and high availability. These difficulties and the high cost of investment and maintenance of these devices have encouraged the approach of prediction of metal grade and recovery. In this paper, a new approach has been proposed for metallurgical performance prediction in flotation columns using Artificial Neural Network (ANN). Despite of the wide range of applications and flexibility of NNs, there is still no general framework or procedure through which the appropriate network for a specific task can be designed. Design and structural optimization of NNs is still strongly dependent upon the designer's experience. To mitigate this problem, a new method for the auto-design of NNs was used, based on Genetic Algorithm (GA). The new proposed method was evaluated by a case study in pilot plant flotation column at sarcheshmeh copper plant. The chemical reagents dosage, froth height, air, wash water flow rates, gas holdup, Cu grade in the rougher feed, flotation column feed, column tail and final concentrate streams were used to the simulation by GANN. In this work, multi-layer NNs with Back Propagation (BP) algorithm with 8-17-10-2 and 8- 13-6-2 arrangements have been applied to predict the Cu and Mo grades and recoveries, respectively. The correlation coefficient (r) values for the testing sets for Cu and Mo grades were 0.93, 0.94 and for their recoveries were 0.93, 0.92, respectively. The results disc

关键词：人工的神经网络基因算法筹款列等级恢复预言

sand dunes as potential sources of dust in northern China

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science China Earth sciences 2016年第4期59卷 760-769页

作者： Mark r sWEENEY LU HuaYu CUI MengChun Joseph A MAsON FENG Han XU ZhiWei Department of Earth sciences University of South Dakota Laboratory of Earth surface Process and Environment School of Geographic and Oceanographic Sciences Nanjing University Department of Geography University of Wisconsin-Madison

While saltation bombardment of sand grains on a fine substrate can produce considerable dust, the well-sorted nature of sand dunes tends to preclude them from consideration as major dust sources. recent research, however, has revealed that sand dunes can, in some cases, be large sources of dust. We used the PI-sWErL(Portable In-situ Wind Erosion Laboratory) to measure in the field the potential of sand dunes and other desert landforms to emit particulate matter st in the Tengger, Ulan Buh, and Mu Us deserts of northern China. Combined with high resolution particle size measurements of the dune sand, an assessment of sand dunes as a dust source can be made. Large active transverse dunes tend to contain little to no stored PM-10, yet they produce a low dust flux. Coppice dunes stabilized by vegetation contain appreciable PM-10 and have very high dust emission potential. There is a positive correlation between the amount of PM-10 stored in a dune and its potential dust flux. saltation liberates loose fines stored in dunes, making them very efficient dust emitters compared to landforms such as dry lake beds and washes where dust particles are unavailable for aeolian transport due to protective crusts or sediment cohesion. In cases where large dunes do not store PM-10 yet emit dust when active, two hypotheses can be considered:(1) iron-oxide grain coatings are removed during saltation, creating dust, and(2) sand grains collide during saltation, abrading grains to create dust. Observations reveal that iron oxide coatings are present on some dune sands. PI-sWErL data suggests that low dust fluxes from dunes containing no stored dust may represent an estimate for the amount of PM-10 dust produced by removal of iron oxide coatings. These results are similar to results from dunes in the United states. In addition, PI-sWErL results suggest that dust-bearing coppice dunes, which cover vast areas of China's sandy deserts, may become major sources of dust in the f

关键词：中国北方粉尘排放沙尘铁氧化物沙丘沙沙漠地貌尘埃粒子毛乌素沙漠

robust transcriptional indicators of immune cell death revealed by spatiotemporal transcriptome analyses

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Molecular Plant 2022年第6期15卷 1059-1075页

作者： Jose salguero-Linares Irene serrano Nerea ruiz-solani Marta salas-Gómez Ujjal Jyoti Phukan Victor Manuel González MartíBernardo-Faura Marc Valls David rengel Nuria s.Coll Centre for research in Agricultural Genomics(CrAG) CSIC-IRTA-UAB-UBCampus UABBellaterra08193 BarcelonaSpain LIPM Universitéde ToulouseINRACNRS84195 Castanet-TolosanFrance INrAE GeT-PlaGeGenotoul31326 Castanet-TolosanFrance Department of Genetics Universitat de Barcelona08028 BarcelonaSpain Consejo superior de Investigaciones Científicas(CsIC) BarcelonaSpain Department of Plant Molecular Biology and Physiology.Albrechtvon Haller Institute for Plant sciences niversity of GottingenJulia-Lermontowa-Weg3.37077 GottingenGrmany Institut de Phammacologie et de Biologie structurale IPBs Universite deToulouse CNRSUPSBP 64182205 route de Nartxonne310077 Toulouse Cedex 04France

recognition of a pathogen by the plant immune system often triggers a form of regulated cell death traditionally known as the hypersensitive response(Hr).This type of cell death occurs precisely at the site of pathogen recognition,and it is restricted to a few *** research has shed light on how plant immune receptors are mechanistically ***,two central key questions remain largely unresolved:how does cell death zonation take place,and what are the mechanisms that underpin this phenomenon?Consequently,bona fide transcriptional indicators of Hr are lacking,which prevents deeper insight into its mechanisms before cell death becomes macroscopic and precludes early or live *** this study,to identify the transcriptional indicators of Hr we used the paradigmatic Arabidopsis thaliana–Pseudomonas syringae pathosystem and performed a spatiotemporally resolved gene expression analysis that compared infected cells that will undergo Hr upon pathogen recognition with bystander cells that will stay alive and activate *** data revealed unique and time-dependent differences in the repertoire of differentially expressed genes,expression profiles,and biological processes derived from tissue undergoing Hr and that of its ***,we generated a pipeline based on concatenated pairwise comparisons between time,zone,and treatment that enabled us to define 13 robust transcriptional Hr *** these genes,the promoter of an uncharacterized AAA-ATPase was used to obtain a fluorescent reporter transgenic line that displays a strong spatiotemporally resolved signal specifically in cells that will later undergo pathogen-triggered cell *** valuable set of genes can be used to define cells that are destined to die upon infection with Hr-triggering bacteria,opening new avenues for specific and/or high-throughput techniques to study Hr processes at a single-cell level.

关键词： Arabidopsis thaliana cell death indicator effector-triggered immunity hypersensitive response pattern-triggered immunity plant immunity Pseudomonas syringae

High Performance ring Oscillators from 10-nm Wide silicon Nanowire Field-Effect Transistors

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Nano research 2011年第10期4卷 1005-1012页

作者： ruo-Gu Huang Douglas Tham Dunwei Wang James r. Heath Department of Electrical Engineering Calilfomia Institute of Technology MC 136-93 Pasadena CA 91125 USA Division of Chemistry and Chemical Engineering California Institute of Technology MC 127-72 Pasadena CA 91125 USA Department of Chemistry Boston College 140 Commonwealth Ave Chestnut Hill Massachusetts 02467 USA

我们探索 10-nm 为逻辑应用的宽 si nanowire (siNW ) 地效果晶体管(联邦货物税) ，经由制造并且基于 siNW 的戒指振荡器严峻。我们在 siNW 表面处理并且绝缘的退火上报导，为生产展出以大 on/off-state 电流比率(108 ) 的高效的 siNW ... 详细信息

我们探索 10-nm 为逻辑应用的宽 si nanowire (siNW ) 地效果晶体管(联邦货物税) ，经由制造并且基于 siNW 的戒指振荡器严峻。我们在 siNW 表面处理并且绝缘的退火上报导，为生产展出以大 on/off-state 电流比率(108 ) 的高效的 siNW 联邦货物税，降低的低导致排水管的障碍(30 mV ) 和低次于最低限度的秋千(80 mV/decade ) 。从这些 nanowire 联邦货物税制作的 inverter 和戒指振荡器电路的表演也被探索。inverter 表明报导为的最高的电压获得(148 ) 一基于 siNW 不，门，和戒指振荡器展览接近 rail-to-rail 在 13.4 MHz 集中的摆动。静电干扰和这些 NW 设备的动态特征显示这些基于 siNW 的联邦货物税电路是各种各样的高效的 nanoelectronic 应用的优秀候选人。

关键词：场效应晶体管环形振荡器硅纳米线性能电子应用表面处理场效应管电压增益