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Photonics Research 2014年第5期2卷 143-149页

作者： Jihua Zhang eric Cassan Xinliang Zhang Wuhan National Laboratory for Optoelectonics&School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Institut d’Electronique Fondamentale UniversitéParis-SudOrsay 91405France e-mail:eric.cassan@u‑psud.fr

We propose an efficient and low-power second harmonic generation(SHG)process in a silicon-compatible hybrid plasmonic microring *** making the microring resonator doubly resonant at the fundamental wavelength of 3.1μm and second harmonic wavelength of 1.55μm,the SHG efficiency is enhanced by almost two orders of magnitude when compared to the previous result induced in a straight plasmonic waveguide.A SHG efficiency of 13.71%is predicted for a low pump power of 20 mW in a ring with radius of 2.325μ*** device provides a potential route for realizing efficient frequency conversion between mid-infrared and near-infrared wavebands on a chip.

关键词： pump resonator power

Modifications of ALPPS–from complex to more complex or from complex to less complex operations

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Hepatobiliary & Pancreatic Diseases International 2017年第4期16卷 346-352页

作者： Wan Yee Lau eric CH Lai Faculty of Medicine The Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina Department of Surgery Pamela Youde Nethersole Eastern HospitalHong Kong SARChina

BACKGROUND: Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) has recently been developed to induce rapid liver hypertrophy to reduce the chance of post-hepatectomy liver failure in patients with borderline or insufficient future liver remnant. ALPPS is still in an early developmental stage and its techniques have not been standardized. This study aimed to review the technical modifications of the conventional ALPPS procedure. DATA SOURCES: Studies were identified by searching MEDLINE and PubMed for articles published from January 2007 to December 2016 using the keywords 'associating liver partition and portal vein ligation for staged hepatectomy' and 'ALPPS'. Additional articles were identified by a manual search of references from key articles. RESULTS: There have been a lot of modifications of the conventional ALPPS. These are classified as: (1) modifications aiming to improve surgical results; (2) modifications aiming to expand surgical indications; (3) salvage ALPPS; (4) ALPPS using the minimally invasive approach. Some of these modifications have made the conventional ALPPS procedure to become even more complex, although there have also been other attempts to make the procedure less complex. The results of most of these modifications have been reported in small case series or case reports. We need better well-designed studies to establish the true roles of these modifications. However, it is interesting to see how this conventional ALPPS procedure has evolved since its introduction. CONCLUSIONS: There is a trend for the use of minimally invasive procedure in the phase 1 or 2 of the conventional ALPPS procedure. Some of these modifications have expanded the use of ALPPS in patients who have been considered to have unresectable liver tumors. The long-term oncological outcomes of these modifications are still unknown.

关键词： associating liver partition and portal vein ligation for stage hepatectomy hepatocellular carcinoma hepatectomy liver metastasis portal vein embolization

Upper cluster algebras and choice of ground ring

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Science China Mathematics 2019年第7期62卷 1257-1266页

作者： eric Bucher John Machacek Michael Shapiro Department of Mathematics Xavier University Cincinnati OH 45207 USA Department of Mathematics and Statistics York University Toronto Ontario A13J 1P3 Canada Department of Mathematics Michigan State University East Lansing MI 48824 USA

We initiate a study of the dependence of the choice of ground ring on the problem on whether a cluster algebra is equal to its upper cluster algebra. A condition for when there is equality of the cluster algebra and upper cluster algebra is given by using a variation of Muller's theory of cluster localization. An explicit example exhibiting dependence on the ground ring is provided. We also present a maximal green sequence for this example.

关键词： cluster algebras upper cluster algebras locally acyclic cluster algebras

Cabbage waxes affect Trissolcus brochymenae response to short-range synomones

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Insect Science 2013年第6期20卷 753-762页

作者： Francesca Frati Gianandrea Salerno eric Conti Dipartimento di Scienze Agrarie e Ambientali Universita di Perugia Borgo XX Giugno 74 Perugia 06121 Italy

We show that induced synomones, emitted as a consequence of Murgantia histrionica activity on Brassica oleracea, are adsorbed by the epicuticular waxes of leaves and perceived by the egg parasitoid Trissolcus brochymenae. Leaves were exposed to M. histrionica females placed on the abaxial leaf surface. After 24 h, the leaves were treated mechanically using gum arabic, or chemically using chloroform, on the adaxial surface, and finally the adaxial surface was assayed with T. brochymenae by two-choice tests in a closed arena. Wasp females responded to mechanically dewaxed cabbage leaf portions with feeding punctures and footprints （Ff） and with feeding punctures, oviposition and footprints （FOr）, showing no effect of wax removal. In contrast, the removal of the epicuticular waxes from leaf portions close to FOf, and from leaves with oviposition and footprints （Of）, determined the lack of responses by T. brochymenae. Solvent extracts of different treatments were bioassayed, but only FOr triggered parasitoid response. Thus the detection of oviposition-induced synomones by the parasitoid depends on their adsorption by the epicuticular waxes. Mechanical wax removal from leaf portions contaminated with host footprints （f） also determined a lack of wasp responses, suggesting that the footprints might trigger the induction of a ＂footprint-induced synomone＂ adsorbed onto the epicuticular waxes and exploited by the parasitoid. Leaf portions with the abaxial lamina previously dewaxed and then contaminated by footprints （D＋f） of M. histrionica did not affect the parasitoid response, indicating that the abaxial epicuticular waxes are not directly involved in the chemicals induced by M. histrionica footprints.

关键词： Brassica oleracea egg parasitoid induced synomones Murgantia histrion-ica oviposition

The glassy solid as a statistical ensemble of crystalline microstates

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npj Computational Materials 2020年第1期6卷 1199-1204页

作者： eric B.Jones Vladan Stevanović Colorado School of Mines GoldenCO 80401USA National Renewable Energy Laboratory GoldenCO 80401USA

We present an alternative and,for the purpose of non-crystalline materials design,a more suitable description of covalent and ionic glassy solids as statistical ensembles of crystalline local minima on the potential energy *** by the concept of partially broken ergodicity,we analytically formulate the set of approximations under which the structural features of ergodic systems such as the radial distribution function(RDF)and powder X-ray diffraction(XRD)intensity can be rigorously expressed as statistical ensemble averages over different local *** is carried out by evaluating these ensemble averages for elemental Si and SiO_(2) over the local minima obtained through the first-principles random structure sampling that we performed using relatively small simulation cells,thereby restricting the sampling to a set of predominantly crystalline *** comparison with XRD and RDF from experiments(amorphous silicon)and molecular dynamics simulations(glassy SiO_(2))shows excellent agreement,thus supporting the ensemble picture of glasses and opening the door to fully predictive description without the need for experimental inputs.

关键词： ensemble crystalline glasses

Design of on-demand wireless capsule endoscope

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仪器仪表学报 2008年第1期29卷 11-15页

作者： Yang Li eric W Able Peng Chenglin College of Bioengineering Chongqing University Chongqing 400044 China School of Engineering and Physical Sciences University of Dundee Dundee DD1 4HN UK

An on-demand wireless capsule endoscope with fulldigital and bidirectional communication is presented,aiming at fulfilling the requirements of micromation and micropower consumption of modern wireless *** proposed multifunctional operation and unique radio transmission system cuts down the power consumption efficiently and on-demand bidirectional communication in vitro improves the detection rate of ***,gray dilatation is introduced in a bit plane that optimizes the distortion rate in the process of image recording and transmission.

关键词：随机无线内窥镜全数字式双向通信灰度级扩张术设计

Remote sensing and geographic information systems techniques in studies on treeline ecotone dynamics

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Journal of Forestry Research 2019年第5期30卷 1543-1553页

作者： Parveen K.Chhetri eric Thai Department of Earth Science and Geography California State University Dominguez Hills

We performed a meta-analysis on over 100 studies applying remote sensing(RS)and geographic information systems(GIS)to understand treeline dynamics.A literature search was performed in multiple online databases,including Web of Knowledge(Thomson Reuters),Scopus(Elsevier),BASE(Bielefeld Academic Search Engine),CAB Direct,and Google Scholar using treeline-related *** found that RS and GIS use has steadily increased in treeline studies since *** RS and satellite imaging techniques varied from low-resolution MODIS,moderate-resolution Landsat,to high-resolution WorldView and aerial *** papers published in the 1990s used low to moderate resolution sensors such as Landsat Multispectral Scanner and Thematic Mapper,or SPOT PAN(Panchromatic)and MX(Multispectral)RS ***,we observed a rise in high-resolution satellite sensors such as ALOS,GeoEye,IKONOS,and WorldView for mapping current and potential ***,we noticed a shift in emphasis of treeline studies over time:earlier reports focused on mapping treeline positions,whereas RS and GIS are now used to determine the factors that control treeline variation.

关键词： Digital elevation model Geographic information systems Remote sensing Treeline

Microstructural evolution of a heat-treated H23 tool steel

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International Journal of Minerals,Metallurgy and Materials 2015年第3期22卷 272-284页

作者： Meilinda Nurbanasari Panos Tsakiropoulos eric J.Palmiere Department of Mechanical Engineering Institut Teknologi Nasional Department of Materials Science and Engineering The University of Sheffield

The microstructure and the stability of carbides after heat treatments in an H23 tool steel were investigated. The heat treatments consisted of austenization at two different austenizing temperatures （1100℃ and 1250℃）, followed by water quenching and double-aging at 650℃, 750℃, and 800℃with air cooling between the first and second aging treatments. Martensite did not form in the as-quenched micro- structures, which consisted of a ferrite matrix, M6C, M7C3, and MC carbides. The double-aged microstructures consisted of a ferrite matrix and MC, M6C, M7C3, and M23C6 carbides. Secondary hardening as a consequence of secondary precipitation of fine M2C carbides did not occur. There was disagreement between the experimental microstructure and the results of thermodynamic calculations. The highest double-aged hardness of the H23 tool steel was 448 HV after austenization at 1250℃ and double-aging at 650℃, which suggested that this tool steel should be used at temperatures below 650℃.

关键词： tool steel microstruc^ral evolution heat treatment carbides stability hardness

Biosorption of mercury by Macrocystis pyrifera and Undaria pinnatifida:Influence of zinc,cadmium and nickel

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Journal of Environmental Sciences 2011年第11期23卷 1778-1786页

作者： Josefina Plaza Marisa Viera Edgardo Donati eric Guibal Centro de Investigacióny Desarrollo en Fermentaciones Industriales CINDEFI (CCT La Plata-CONICET UNLP)Facultad de Ciencias Exactas50 y 115(1900) La PlataArgentina Ecole des Mines d'Ale`s Laboratoire Ge'nie de l'Environnement Industriel6avenue de Clavie`resF-30319 Ale`s cedexFrance Ecole des Mines d‘Ale`s Laboratoire Ge'nie de l‘Environnement Industriel6avenue de Clavie`resF-30319 Ale`s cedexFrance

This study investigated the adsorption of Hg（Ⅱ） on Macrocystis pyrifera and Undaria pinnatifida in monometallic system in the presence of Zn（II）,Cd（Ⅱ） and Ni（II）.The two biosorbents reached the same maximum sorption capacity （q m = 0.8 mmol/g） for *** showed a greater affinity （given by the coefficient b of the Langmuir equation） for mercury compared to *** （4.4 versus 2.7 L/mmol）.Mercury uptake was significantly reduced （by more than 50%） in the presence of competitor heavy metals such as Zn（II）,Cd（II） and Ni（Ⅱ）.Samples analysis using an environmental scanning electron microscopy equipped with an energy dispersive X-ray microanalysis showed that mercury was heterogeneously adsorbed on the surface of both biomaterials,while the other heavy metals were homogeneous *** analysis of biosorbents by Fourier transform infrared spectrometry indicated that Hg（Ⅱ） binding occurred on S=O （sulfonate） and N-H （amine） functional groups.

关键词： mercury isotherm sorption M.pyrifera U.pinnatifida ESEM-EDX FT-IR spectrometry

Image matching algorithm based on SIFT using color and exposure information

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Journal of Systems Engineering and Electronics 2016年第3期27卷 691-699页

作者： Yan Zhao Yuwei Zhai eric Dubois Shigang Wang School of Communication Engineering Jilin University School of Electrical Engineering and Computer Science University of Ottawa

Image matching based on scale invariant feature transform（SIFT） is one of the most popular image matching algorithms, which exhibits high robustness and accuracy. Grayscale images rather than color images are generally used to get SIFT descriptors in order to reduce the complexity. The regions which have a similar grayscale level but different hues tend to produce wrong matching results in this case. Therefore, the loss of color information may result in decreasing of matching ratio. An image matching algorithm based on SIFT is proposed, which adds a color offset and an exposure offset when converting color images to grayscale images in order to enhance the matching ratio. Experimental results show that the proposed algorithm can effectively differentiate the regions with different colors but the similar grayscale level, and increase the matching ratio of image matching based on SIFT. Furthermore, it does not introduce much complexity than the traditional SIFT.

关键词： scale invariant feature transform(SIFT) image matching color exposure