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  • Open Access

    ARTICLE

    Streptomyces PRIO41 as plant growth promoter of jalapeño pepper plants and as biocontrol agent of Fusarium

    Robles-Hernández L, J Hernández-Huerta, AC González-Franco, OA Hernández-Rodríguez, A Núñez-Barrios, R Pérez-Leal

    Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 253-261, 2015, DOI:10.32604/phyton.2015.84.253

    Abstract Chili pepper is one of the main crops of economic importance in Mexico, and Fusarium wilting is a disease that limits its production. In addition, the inappropriate use of agrochemicals in farming activities generate environmental and health problems. Therefore, in this study the effectiveness of Streptomyces sp PRIO41 was evaluated as a (1) biocontrol agent of Fusarium spp and (2) plant growth promoter bacteria. Assays of pathogenicity and virulence of Fusarium spp. in jalapeño pepper seeds, and interactions of these pathogens with Streptomyces PRIO41 were evaluated under two nutritional conditions. In the greenhouse, the effectiveness of Streptomyces sp.… More >

  • Open Access

    ARTICLE

    Effect of fruit maturity, seed weight and storage time on the viability and germination of the seed of candelilla (Euphorbia antisiphylitica Zucc.)

    Alvarado-Vázquez MA, R Foroughbakhch, MA Guzmán- Lucio, A Rocha-Estrada, JL Hernández-Piñero, ML Cárdenas-Ávila, BM Soto-García

    Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 70-79, 2015, DOI:10.32604/phyton.2015.84.070

    Abstract Candelilla (Euphorbia antisiphylitica Zucc.) is a very important plant resource in the arid lands of Northern Mexico. This is because the wax content coating the stem has unique properties which have been useful for multiple applications in the food industry, electronics, cosmetics, etc. However, the intensive exploitation of this resource has caused a great decrease in the populations of this species making necessary to consider strategies for their conservation and sustainable use. One of the primary needs with regeneration purposes is to know their reproductive processes, particularly the biotic and/or abiotic factors that determine the viability… More >

  • Open Access

    ARTICLE

    Fertilizer and manure equivalent rates on forage corn production (Zea mays)

    López-Calderón MJ1, U Figueroa-Viramontes2*, M Fortis-Hernández1, G Núñez-Hernández2, E Ochoa-Martínez2, JI Sanchez-Duarte2

    Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 8-13, 2015, DOI:10.32604/phyton.2015.84.008

    Abstract An experiment with increasing rates of fertilizer and manure in silage corn was established to evaluate the agronomic crop response and to estimate the manure nitrogen availability. The treatments were designed to deliver 0, 67, 100 and 133% of the crop nitrogen requirements (CNR), using ammonium sulphate and manure as N source. Dry matter (DM) yield was similar among treatments receiving N, but those values were greater than those found in the control. Nitrogen extraction at harvest was not statistically different in treatments with fertilizer or manure, but it was higher in these treatments than… More >

  • Open Access

    ARTICLE

    Mouse cerebellar Purkinje cell damage induced by diphenylhydantoin acute intoxication

    Orlando J. CASTEJÓN*

    BIOCELL, Vol.39, No.2-3, pp. 33-40, 2015, DOI:10.32604/biocell.2015.39.033

    Abstract Twenty one days old Swiss albino mice that received diphenylhydantoin (25 mg/kg, i.p., daily for 15 days) progressively developed gait alterations, changes of behavior and cerebellar ataxia. Cerebellar slices were processed by conventional transmission electron microscopy. The body of Purkinje cells exhibited fragmented limiting plasma membranes, dilated nuclear envelopes, swelling and disassembly of nuclear pores, enlargement of rough and smooth endoplasmic reticulum and a notable detachment of membrane associated ribosomes, together with distorted vacuoles of smooth endoplasmic reticulum, bizarre shaped and swollen mitochondria with dilated cristae, as well as disrupted limiting lysosomal membranes. Degenerated… More >

  • Open Access

    ARTICLE

    Mechanical Analysis of the Coupled Gas-Solid-Thermal Model during Rock Damage

    Cao Zhengzheng1, Zhou Yuejin1,2, Zhang Qi1, Wang Erqian1

    CMC-Computers, Materials & Continua, Vol.47, No.3, pp. 203-215, 2015, DOI:10.3970/cmc.2015.047.203

    Abstract Gas fracturing technology is the key to the exploration for unconventional petroleum resources and other engineering industries, so the research on the coupled gas-solid-thermal model during rock damage has the important significance to the development of gas fracturing technology. By introducing rock damage variable, the coupled gas-solid-thermal model during rock damage is established in this paper, besides, the rock damage constitutive is written with MATLAB software, which is embedded in the multi-physics coupling software COMSOL in the process of numerical computation. Based on this, the damage rule of rock mass around drilling under high pressure… More >

  • Open Access

    ARTICLE

    The Influence of Non-Homogeneous Material Properties on ElasticWave Propagation in Fluid-Filled Boreholes

    A. Tadeu1, P. Stanak2, J. Antonio1, J. Sladek2, V. Sladek2

    CMES-Computer Modeling in Engineering & Sciences, Vol.107, No.5, pp. 345-378, 2015, DOI:10.3970/cmes.2015.107.345

    Abstract This paper implements a numerical method based on the mutual coupling of the boundary element method (BEM) and the meshless local Petrov-Galerkin (MLPG) method to simulate elastic wave propagation in fluid-filled boreholes. The fluid-solid interaction is solved in the frequency domain assuming longitudinally invariant geometry in the axial direction (2.5D formulation).
    This model is used to assess the influence of the non-homogeneous material properties of a borehole wall that can be caused by a damaged zone, construction process or the ageing of material. The BEM is used to model propagation within the unbounded homogeneous domain… More >

  • Open Access

    ARTICLE

    Real-Time Moving Targets Detection in Dynamic Scenes

    Fan Li1, Yang Yang

    CMES-Computer Modeling in Engineering & Sciences, Vol.107, No.2, pp. 103-124, 2015, DOI:10.3970/cmes.2015.107.103

    Abstract The shift of the camera leads to unsteadiness of backgrounds in video sequences. The motion of camera will results in mixture of backgrounds and foregrounds motion. So it is a challenge for targets detection in dynamic scenes. A realtime moving target detection algorithm with low complexity in dynamic scenes is proposed in this paper. Sub-block based image registration is applied to remove the global motion of the video frame. Considering the blocks in one frame have different motion vectors, the global motion of each block is separately estimated. Then, a neighbor-based background modeling is applied More >

  • Open Access

    ARTICLE

    A Micromechanical Model for Estimating the Effective Stiffness of a Pair of Micro-cracked Interfaces in an Orthotropic Trimaterial under Inplane Deformations

    X. Wang1, W.T. Ang1,2, H. Fan1

    CMES-Computer Modeling in Engineering & Sciences, Vol.107, No.2, pp. 81-101, 2015, DOI:10.3970/cmes.2015.107.081

    Abstract A micromechanical model is proposed here for estimating the effective stiffness of a pair of parallel microscopically damaged interfaces in a trimaterial under inplane elastostatic deformations. The trimaterial is made of an orthotropic thin layer sandwiched between two orthotropic half-spaces. The microscopically damaged interfaces are modeled using periodically distributed interfacial micro-cracks. The micromechanical model is formulated and numerically solved in terms of hypersingular boundary integro-differential equations. The effects of the width of the thin layer, the micro-crack densities of the two interfaces and the material constants of the thin layer and the two half-spaces on More >

  • Open Access

    ARTICLE

    Improved Failure Mode Identification and Reliability Estimates for Electricity Transmission Towers

    Xuwen An1,2, Jianguo Hou3, P.D. Gosling4, Dong Dai5, Long Xiao6, Xiaoyi Zhou7

    CMES-Computer Modeling in Engineering & Sciences, Vol.107, No.1, pp. 1-25, 2015, DOI:10.3970/cmes.2015.107.001

    Abstract Studies on the theory of structural system reliability includes identification of main the failure modes and calculation of inclusive failure probabilities for the structural system. The efficient and accurate identification of failure modes in structural systems is difficult and represents a key focus for research in system reliability. The fundamental theory of the branch and bound algorithm for stage critical strength is reviewed in this paper. Some deficiencies in this method are highlighted. Corresponding approaches to overcome these deficiencies are proposed. Calculated system reliability solutions to the classical model, a truss with 10 elements, indicate More >

  • Open Access

    ARTICLE

    Probability Density Transitions in the FitzHugh-Nagumo Model with Lévy Noise

    Xu Yong1,2, Feng Jing1, Xu Wei1, Gu Rencai1

    CMES-Computer Modeling in Engineering & Sciences, Vol.106, No.5, pp. 309-322, 2015, DOI:10.3970/cmes.2015.106.309

    Abstract In this paper, bifurcation analysis and numerical simulations are performed on the FitzHugh-Nagumo system in the presence of Lévy stable noise. The stationary probability density functions are obtained to examine the influences of noise intensity and stability index. Results show that under the influences of noise intensity and stability index, the dynamic of the FitzHugh-Nagumo model can be well characterized through the concept of stochastic bifurcation, consisting in qualitative changes of the stationary probability distribution. Then, the mean passage time between the resting and action state is investigated as functions of noise intensity and stability More >

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