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Irradiation uniformity at the Laser Megajoule facility in the context of the shock ignition scheme

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High Power Laser Science and Engineering 2014年第2期2卷 1-12页

作者： Mauro Temporal Benoit Canaud Warren j. Garbett Rafael Ramis Stefan Weber Centre de Math'ematiques et de Leurs Applications ENS Cachan and CNRS 61 Av. du President Wilson Cachan Cedex France CEA DIF Arpajon Cedex France AWE plc Aldermaston Reading Berkshire United Kingdom ETSI Aeron'auticos Universidad Polit'ecnica de Madrid Madrid Spain ELI-Beamlines Institute of Physics Academy of Sciences of the Czech Republic Prague Czech Republic

The use of the Laser Megajoule facility within the shock ignition scheme has been considered. In the first part of the study, one-dimensional hydrodynamic calculations were performed for an inertial confinement fusion capsule in the context of the shock ignition scheme providing the energy gain and an estimation of the increase of the peak power due to the reduction of the photon penetration expected during the high-intensity spike pulse. In the second part, we considered a Laser Megajoule configuration consisting of 176 laser beams that have been grouped providing two different irradiation schemes. In this configuration the maximum available energy and power are 1.3 Mj and 440 TW. Optimization of the laser–capsule parameters that minimize the irradiation non-uniformity during the first few ns of the foot pulse has been performed. The calculations take into account the specific elliptical laser intensity profile provided at the Laser Megajoule and the expected beam uncertainties. A significant improvement of the illumination uniformity provided by the polar direct drive technique has been demonstrated. Three-dimensional hydrodynamic calculations have been performed in order to analyse the magnitude of the azimuthal component of the irradiation that is neglected in twodimensional hydrodynamic simulations.

关键词： inertial confinement fusion shock ignition laser system

A review of Epipenaeon ingens Nobili, 1906 (Isopoda: Bopyridae) host species and documentation of a new host, Metapenaeopsis stridulans (Alcock, 1905) (Decapoda: Penaeidae)

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Chinese journal of Oceanology and Limnology 2011年第1期29卷 136-140页

作者： M.RAjKUMAR S.MANOKARAN 孙军 j.P.TRILLES Centre of Advanced Study in Marine Biology Annamalai University Institute of Oceanology Chinese Academy of Sciences Equipe Adaptation Ecophysiologique et Ontogenèse UMR 5171GPIA: GénomePopulationsInteractionsAdaptationUniversité de Montpellier IISciences et Techniques du LanguedocCP 092Place Eugène Bataillon34095 Montpellier Cedex 5France

We collected 3 596 Metapenaeopsis stridulans (Decapoda: Penaeidae) from the southeast coast of India between january and December 2007. Sixty three specimens (43 females and 18 males) were parasitized by the bopyrid isopod Epipenaeon ingens (Isopoda: Bopyridae). This is the first report of the occurrence of E. ingens in this host; therefore, it was considered as a new host record. The highest level of infestation (3.2%) occurred in October 2007, coincident with observations of gravid females (9). The total prevalence and presence of gravid females were 17.46% and 28%, respectively. Infestation caused a characteristic bulge of the branchial chamber, growth retardation, and degeneration of the sex organs, but had no effect on the host weight.

关键词： Bopyridae Penaeidae parasitism shrimp India

Modeling the oxidative consumption of curcumin from controlled released poly(betaamino ester)microparticles in the presence of a free radical generating system

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Regenerative Biomaterials 2019年第4期6卷 201-210页

作者： Carolyn T.jordan j.Zach Hilt Thomas D.Dziubla Department of Chemical and Materials Engineering University of KentuckyLexingtonKY 40506USA

Despite the promise of its therapeutic benefits,curcumin as a free molecule has failed to demonstrate significant clinical ***,its inherently poor stability and rapid clearance is a significant reason for these negative *** incorporation of curcumin into the backbone of a crosslinked hydrogel that utilizes poly(beta-amino ester)(PBAE)chemistry can provide a tunable protective network with the ability to release at a controlled rate while improving its therapeutic *** of curcumin conjugated PBAE microparticles controlled release delivery system in the presence of oxidative environments was studied for the first time,where consumption rates of active curcumin and release products were *** constituent amount of curcumin present in solution was improved by incorporating the active into the network in comparison to curcumin as a free *** curcumin conjugated PBAE microparticles will provide a design platform to improve translation and overall success in delivering a therapeutic agent that matches levels of oxidative stress.

关键词： oxidative stress wound healing oral mucositis drug delivery

Differential Formulation of Discontinuous Galerkin and Related Methods for the Navier-Stokes Equations

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Communications in Computational Physics 2013年第4期13卷 1013-1044页

作者： Haiyang Gao Z.j.Wang H.T.Huynh Department of Aerospace Engineering and CFD Center Iowa State University2271 Howe Hall AmesIA 50011USA NASA Glenn Research Center MS 5-11ClevelandOH 44135USA

A new approach to high-order accuracy for the numerical solution of conservation laws introduced by Huynh and extended to simplexes by Wang and Gao is renamed CPR(correction procedure or collocation penalty via reconstruction).The CPR approach employs the differential form of the equation and accounts for the jumps in flux values at the cell boundaries by a correction *** addition to being simple and economical,it unifies several existing methods including discontinuous Galerkin,staggered grid,spectral volume,and spectral *** discretize the diffusion terms,we use the BR2(Bassi and Rebay),interior penalty,compact DG(CDG),and I-continuous *** first three of these approaches,originally derived using the integral formulation,were recast here in the CPR framework,whereas the I-continuous scheme,originally derived for a quadrilateral mesh,was extended to a triangular *** stability and accuracy analyses for these schemes on quadrilateral and triangular meshes are carried ***,results for the Navier-Stokes equations are shown to compare the various schemes as well as to demonstrate the capability of the CPR approach.

关键词： Discontinuous Galerkin lifting collocation penalty flux reconstruction Navier-Stokes equations correction procedure via reconstruction unstructured hybrid grids

Effect of nitrogen application level on cotton fibre quality

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journal of Cotton Research 2022年第1期5卷 80-114页

作者： VAN DER SLUIjS Marinus H.j Textile Technical Services 35 Helena StreetBelmontGeelongVIC 3216Australia Deakin University Pigdons RoadWaurn PondsGeelongVIC 3216Australia

The nitrogen(N)requirements of cotton are well understood and have been extensively studied since 1887,with practical guides,decision support systems,models and recent reviews providing information on the importance of providing cotton crops with a sufficient supply of nutrients and improving nitrogen use *** that the financial return to the grower depends on both the cotton quantity and quality and the growing importance of the latter,this review focusses specifically on information and knowledge about the effect of nitrogen application level on fibre quality.

关键词： Cotton Nitrogen Fibre quality

Identification of Greigite in the Pliocene Sediments of Qinghai Lake and Its Geological Significance

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Acta Geologica Sinica(English Edition) 2016年第6期90卷 2261-2262页

作者： FU Chaofeng jan BLOEMENDAL QIANG Xiaoke Mimi j.HILL AN Zhisheng Key Laboratory of Western Mineral Resources and Geological Engineering Ministry of Education of ChinaChang'an University State Key Laboratory of Loess and Quaternary Geology Institute of Earth and EnvironmentCAS Geomagnetism Lab School of Environmental SciencesUniversity of Liverpool

The Qinghai Lake in North China is the largest interior plateau lake in Central Asia, and is sensitive to climate change and the environmental effects of Tibetan Plateau uplift. An almost continuous 626 m long sedimen... 详细信息

关键词： In Lake Identification of Greigite in the Pliocene Sediments of Qinghai Lake and Its Geological Significance

Exopolysaccharide-Producing Plant Growth-Promoting Rhizobacteria Under Salinity Condition

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Pedosphere 2011年第2期21卷 214-222页

作者： S.K.UPADHYAY j.S.SINGH D.P.SINGH Department of Environmental Science Babasaheb Bhimrao Ambedker (Central) UniversityRaibarelly RoadLucknow-226025 (India)

Salt-tolerant plant growth-promoting rhizobacteria （PGPR） can play an important role in alleviating soil salinity stress during plant growth and bacterial exopolysaccharide （EPS） can also help to mitigate salinity stress by reducing the content of Na＋ available for plant uptake. In this study, native bacterial strains of wheat rhizosphere in soils of Varanasi, India, were screened to identify the EPS-producing salt-tolerant rhizobacteria with plant growth-promoting traits. The various rhizobacteria strains were isolated and identified using 16S rDNA sequencing. The plant growth-promoting effect of inoculation of seedlings with these bacterial strains was evaluated under soil salinity conditions in a pot experiment. Eleven bacterial strains which initially showed tolerance up to 80 g L-1 NaC1 also exhibited an EPS-producing potential. The results suggested that the isolated bacterial strains demonstrated some of the plant growth-promoting traits such as phosphate solubilizing ability and production of auxin, proline, reducing sugars, and total soluble sugars. Furthermore, the inoculated wheat plants had an increased biomass compared to the unoinoculated plants.

关键词： NaCl plant uptake rhizosphere salt tolerance wheat

A new insight into electrochemical detection of eugenol by hierarchical sheaf-like mesoporous NiCo2O4

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Nano Research 2015年第8期8卷 2636-2645页

作者： Mylamparambil Udayan Anu Prathap Chao Wei Shengnan Sun Zhichuan j. Xu School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore

NiCo2O4 nanosheets with sheaf-like nanostructure morphologies have been synthesized by a facile one-step hydrothermal reaction followed by annealing treatment. Impressively, the NiCo2O4 nanosheets exhibit rapid detection of eugenol. The linear range of detection is from 1-500μM, and the limit of detection is 5.4 μM. The NiCo2O4 modified electrode demonstrated high sensitivity, good repeatability and reproducibility, and long-term stability （7% decrease in response over 30 days）. Based on this work, an electrochemical reaction mechanism for eugenol oxidation was proposed, and in addition, the NiCo2O4 modified electrode was successfully employed for the analysis of eugenol in medicative balm samples. Recovery values for eugenol in medicative balm samples were in the range 98.7%-105.5%.

关键词： NiCo2O4 nanosheets eugenol determination electrocatalysis electrochemical mechanism real sample analysis

The amrG1 gene is involved in the activation of acetate in Corynebacterium glutamicum

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Science China(Life Sciences) 2005年第2期48卷 97-105页

作者： R.Gerstmeir S.Schnicke B.j.Eikmanns Deptartment of Microbiology & Biotechnology Ulm University D-89069 Ulm GermanyDeptartment of Microbiology & Biotechnology Ulm University D-89069 Ulm GermanyDeptartment of Microbiology & Biotechnology Ulm University D-89069 Ulm Germany

During growth of Corynebacterium glutamicum on acetate as its carbon and energy source, the expression of the pta-ack operon is induced, coding for the acetate-activating en- zymes, which are phosphotransacetylase (PTA) and acetate kinase (AK). By transposon rescue, we identified the two genes amrG1 and amrG2 found in the deregulated transposon mutant C. glutamicum G25. The amrG1 gene (NCBI-accession: AF532964) has a size of 732 bp, encoding a polypeptide of 243 amino acids and apparently is partially responsible for the regulation of acetate metabolism in C. glutamicum. We constructed an in-frame deletion mutant and an over- expressing strain of amrG1 in the C. glutamicum ATCC13032 wildtype. The strains were then analyzed with respect to their enzyme activities of PTA and AK during growth on glucose, acetate and glucose or acetate alone as carbon sources. Compared to the parental strain, the amrG1 deletion mutant showed higher specific AK and PTA activities during growth on glucose but showed the same high specific activities of AK and PTA on medium containing acetate plus glu- cose and on medium containing acetate. In contrast to the gene deletion, overexpression of the amrG1 gene in C. glutamicum 13032 had the adverse regulatory effect. These results indicate that the amrG1 gene encodes a repressor or co-repressor of the pta-ack operon.

关键词： amrG1, Corynebacterium glutamicum, acetate activation, phosphotransacetylase, acetate kinase.