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  • Open Access

    ARTICLE

    Fabrication of Crack-Free Flattened Bamboo and Its Macro-/Micro-Morphological and Mechanical Properties

    Zhichao Lou1,2, Tiancheng Yuan1, Qiuyi Wang1, Xinwu Wu1, Shouheng Hu1, Xiaomeng Hao1, Xianmiao Liu3,*, Yanjun Li1,*

    Journal of Renewable Materials, Vol.9, No.5, pp. 959-977, 2021, DOI:10.32604/jrm.2021.014285 - 20 February 2021

    Abstract This work aimed to help the bamboo industry develop methodology for producing imperfection-free bamboo boards that can serve either decorative or structural benefit to consumers seeking to engage with the bioeconomy. Specifi- cally, softened and slotted bamboo tubes were handled by a roller device with nails to render crack-free flattened bamboo board. Softening temperature and time were optimized herein according to findings regarding chemical composition and board mechanical properties. The optimal softening parameters for saturated steam heat treatment is proved to be 160°C for 8 minutes. The flattened bamboo board possesses an increased bending strength… More >

  • Open Access

    ARTICLE

    Allelopathic Potential and Mechanism of Rosebay Willowherb [Chamaenerion angustifolium (L.) Scop.] Demonstrated on Model Plant Lettuce

    Hailin Shi#, Shiwei Sun#, Xiaohong Liu, Jiahe Fan, Jin Wang, Ke Zhao, Wei Wang*

    Phyton-International Journal of Experimental Botany, Vol.90, No.1, pp. 159-170, 2021, DOI:10.32604/phyton.2020.011620 - 20 November 2020

    Abstract Allelopathic plants are important resources for the discovery of bioherbicides. Rosebay willowherb [Chamaenerion angustifolium (L.) Scop. syn. Epilobium angustifolium L.] widely distributes in Western Asia, Europe, and North America, and behaves as a dominant species within the community due to the production of substances that restrict growth of other plants. This study aims at investigating the allelopathic potential of rosebay willowherb by evaluation of the effects of aqueous extracts from different parts on seed germination and seedling growth in lettuce (Lactuca sativa L.), as well as measuring the accumulation of reactive oxygen species and structural analysis of root… More >

  • Open Access

    ARTICLE

    An Accurate Persian Part-of-Speech Tagger

    Morteza Okhovvat1,∗, Mohsen Sharifi2,†, Behrouz Minaei Bidgoli2,‡

    Computer Systems Science and Engineering, Vol.35, No.6, pp. 423-430, 2020, DOI:10.32604/csse.2020.35.423

    Abstract The processing of any natural language requires that the grammatical properties of every word in that language are tagged by a part of speech (POS) tagger. To present a more accurate POS tagger for the Persian language, we propose an improved and accurate tagger called IAoM that supports properties of text to speech systems such as Lexical Stress Search, Homograph words Disambiguation, Break Phrase Detection, and main aspects of Persian morphology. IAoM uses Maximum Likelihood Estimation (MLE) to determine the tags of unknown words. In addition, it uses a few defined rules for the sake More >

  • Open Access

    ARTICLE

    Variation for Resistance to Alternaria tenuissima and Potential Structural Mechanism among Different Cultivars of Chrysanthemum morifolium

    Huiyun Li, Ye Liu, Sumei Chen, Jiafu Jiang, Aiping Song, Weimin Fang, Fadi Chen*

    Phyton-International Journal of Experimental Botany, Vol.89, No.4, pp. 851-859, 2020, DOI:10.32604/phyton.2020.012361 - 09 November 2020

    Abstract Black spot disease, caused by the necrotrophic fungus Alternaria tenuissima (Fr.) Wiltsh (A. tenuissima), is considered a highly destructive disease of Chrysanthemum (Chrysanthemum morifolium Ramat.). A set of 17 accessions of commercial chrysanthemum cultivars were evaluated for resistance to A. tenuissima by seedling artificial inoculation. It was found that the reaction of the accessions to artificial inoculation ranged from resistant to highly susceptible. Five varieties of chrysanthemum (‘Zhongshan Taogui’, ‘Jinba’, ‘Zhongshan Jinguan’, ‘Jinling Wanhuang’ and ‘Jinling Yangguang’) were resistant; two varieties of chrysanthemum (‘Zhongshan Xinggui’ and ‘Zhongshan Jinkui’) were moderately resistant; and others were susceptible to various degrees, four More >

  • Open Access

    ARTICLE

    Influence of Biochar on Nitrogen Use Efficiency and Root Morphology of Rice-Seedling in Two Contrasting Paddy Soils

    Lei Chu1,2, Yu Zhang1,2, Long Qian1,2, Dandan Zhu1,2, Haijun Sun1,2,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.4, pp. 1035-1042, 2020, DOI:10.32604/phyton.2020.014506 - 09 November 2020

    Abstract Biochar may affect the root morphology and nitrogen (N) use efficiency (NUE) of rice at seedling stage, which has not been clearly verified until now. To clarify it, we conducted a pot experiment regarding to two soil types (Hydragric Anthrosol and Haplic Acrisol), two biochar application rates (0.5 wt% and 1.5 wt %) and two rice varieties (common rice var. Xiushui134 and hybrid super rice var. Zhongkejiayou12-6) meanwhile. Seedling NUE of common rice Xiuhui134 was significantly increased (p < 0.05) by 78.2% in Hydragric Anthrosol and by 91.4% in Haplic Acrisol following biochar addition with 1.5… More >

  • Open Access

    REVIEW

    Fabrication and Application of CeO2 Nanostructure with Different Morphologies: A Review

    Xiaofei Cao1, Shuo Zhao1, ShuJun Yan2, Jun Hu1,*, Yong Dan1,*

    Journal of Renewable Materials, Vol.8, No.11, pp. 1443-1472, 2020, DOI:10.32604/jrm.2020.012113 - 28 September 2020

    Abstract CeO2, as a significant functional material, Has a widespread application in many fields due to its excellent properties. In this review, we sum up a serious of methods to prepare and differentiate nanostructured cerium oxide with various morphologies based on dimensionality and its main applications in industry. We mainly summary the different strategies to synthetic the CeO2 with 0-D, 1-D, 2-D and 3-D and the key parameters which may affect the nanostructures. We hope that this review helps researchers master can look up CeO2 related knowledge more quickly upon the synthetic methods and comparing various morphologies or More >

  • Open Access

    ARTICLE

    Thermodynamics of Molten Pool Predicted by Computational Fluid Dynamics in Selective Laser Melting of Ti6Al4V: Surface Morphology Evolution and Densification Behavior

    Donghua Dai1,2, Dongdong Gu1,2,*, Qing Ge1,2, Chenglong Ma1,2, Xinyu Shi1,2, Han Zhang1,2

    CMES-Computer Modeling in Engineering & Sciences, Vol.124, No.3, pp. 1085-1098, 2020, DOI:10.32604/cmes.2020.010927 - 21 August 2020

    Abstract The three-dimensional physical model of the randomly packed powder material irradiated by the laser beam was established, taking into account the transformation of the material phase, the melt spreading and the interaction of the free surface of the molten pool and the recoiling pressure caused by the material evaporation during the selective laser melting. Influence of the processing parameters on the thermal behavior, the material evaporation, the surface morphology and the densification behavior in the connection region of the molten pool and the substrate was studied. It was shown that the powder material underwent the… More >

  • Open Access

    ARTICLE

    Morphology, Phylogeny and Culture Characteristics of Ganoderma gibbosum Collected from Kunming, Yunnan Province, China

    Thatsanee Luangharn1,2,3,4, Samantha C. Karunarathna1,3, Peter E. Mortimer1,4,*, Kevin D. Hyde3,5, Jianchu Xu1,3,4,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.3, pp. 743-764, 2020, DOI:10.32604/phyton.2020.09690 - 22 June 2020

    Abstract Ganoderma is a genus of medicinally and economically important mushrooms in the family Ganodermataceae. Ganoderma species are popular medicinal mushrooms and their health benefits are well-documented. Ganoderma is a cosmopolitan genus that is widely distributed in both tropical and temperate regions. This genus is characterized by its unique laccate or non-laccate species with double-walled basidiospores. Here, we report on eight collections of G. gibbosum collected during surveys in Kunming, Yunnan Province, China. The specimens are described and illustrated based on macro- and micro-morphological characteristics. Total DNA of the eight G. gibbosum strains were extracted using the Biospin Fungal More >

  • Open Access

    ARTICLE

    Enhancing Drought Tolerance in Wheat through Improving MorphoPhysiological and Antioxidants Activities of Plants by the Supplementation of Foliar Silicon

    Zahoor Ahmad1,*, Ejaz Ahmad Waraich2, Celaleddin Barutçular1, Akbar Hossain3, Murat Erman4, Fatih ÇIĞ4, Hany Gharib5, Ayman EL Sabagh4, 5, *

    Phyton-International Journal of Experimental Botany, Vol.89, No.3, pp. 529-539, 2020, DOI:10.32604/phyton.2020.09143 - 22 June 2020

    Abstract The main objective of the research is to assess the role of foliar application of silicon (Si) for enhancing the survival ability of wheat under drought stress through improving its morphology, physicochemical and antioxidants activities. Treatments were five doses of Si at the rate of 2, 4, 6 and 8 mM and a control. After completion of seeds germination, pots were divided into four distinct groups at various field capacity (FC) levels, such as 100% FC (well-irrigated condition), 75% FC (slight water deficit), 50% FC (modest water deficit) and 25% FC (severe water deficit stress… More >

  • Open Access

    ARTICLE

    Numerical Study on Rock Breaking Mechanism of Supercritical CO2 Jet Based on Smoothed Particle Hydrodynamics

    Xiaofeng Yang1, *, Yanhong Li1, Aiguo Nie1, Sheng Zhi2, Liyuan Liu3

    CMES-Computer Modeling in Engineering & Sciences, Vol.122, No.3, pp. 1141-1157, 2020, DOI:10.32604/cmes.2020.08538 - 01 March 2020

    Abstract Supercritical carbon dioxide (Sc-CO2) jet rock breaking is a nonlinear impact dynamics problem involving many factors. Considering the complexity of the physical properties of the Sc-CO2 jet and the mesh distortion problem in dealing with large deformation problems using the finite element method, the smoothed particle hydrodynamics (SPH) method is used to simulate and analyze the rock breaking process by Sc-CO2 jet based on the derivation of the jet velocity-density evolution mathematical model. The results indicate that there exisits an optimal rock breaking temperature by Sc-CO2. The volume and length of the rock fracture increase with the… More >

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