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  • Open Access

    ARTICLE

    Intratree Variation in Viscoelastic Properties of Cell Walls of Masson Pine (Pinus Massoniana Lamb)

    Shaoxiang Cai1, Yuliang Guo1, Yanjun Li2,*

    Journal of Renewable Materials, Vol.10, No.1, pp. 119-133, 2022, DOI:10.32604/jrm.2022.016260

    Abstract In this study, Pinus massoniana Lamb at different heights, across the annual rings, and between earlywood and latewood was measured by X-ray diffraction and the chemical composition was analyzed by chemical treatment. Results indicated that the microfibril angle (MFA) decreased and the chemical composition changed little with the increase in height from 1 m to 9 m. In the radial direction, the MFA decreased and the chemical composition changed little with an increase in annual rings. The cellulose content of latewood was higher than that of earlywood. The viscoelastic changes of wood cell walls at different heights, across the annual rings by… More >

  • Open Access

    ARTICLE

    3D Non-Fluoroscopic Cryoablation of Right-Sided Accessory Pathways in Children: Monocentric Study and Literature Review

    Fabrizio Drago*, Irma Battipaglia, Pietro Paolo Tamborrino, Luigina Porco, Camilla Calvieri, Mario Salvatore Russo, Vincenzo Pazzano, Romolo Remoli, Massimo Stefano Silvetti

    Congenital Heart Disease, Vol.16, No.6, pp. 561-572, 2021, DOI:10.32604/CHD.2021.016623

    Abstract Background: Cryoablation of accessory pathways (APs) is effective and very safe in children, as previously reported by our group. The aim of this retrospective study was to evaluate the current efficacy of 3D non-fluoroscopic cryoablation of right sided APs in children, comparing results obtained with the Ensite VelocityTM and the more recent Ensite PrecisionTM 3D mapping systems. Methods and Results: From January 2016 to December 2019, 102 pediatric patients [mean age 12.5 ± 2.8, 62 males (61% of total cohort)] with right APs underwent 3D non-fluoroscopic transcatheter cryoablation at our Institution. Fifteen (14.7%) patients had previously undergone catheter ablation. Acute… More >

  • Open Access

    ARTICLE

    Fatigue Topology Optimization Design Based on Distortion Energy Theory and Independent Continuous Mapping Method

    Hongling Ye*, Zonghan Li, Nan Wei, Pengfei Su, Yunkang Sui

    CMES-Computer Modeling in Engineering & Sciences, Vol.128, No.1, pp. 297-314, 2021, DOI:10.32604/cmes.2021.016133

    Abstract Fatigue failure is a common failure mode under the action of cyclic loads in engineering applications, which often occurs with no obvious signal. The maximum structural stress is far below the allowable stress when the structures are damaged. Aiming at the lightweight structure, fatigue topology optimization design is investigated to avoid the occurrence of fatigue failure in the structural conceptual design beforehand. Firstly, the fatigue life is expressed by topology variables and the fatigue life filter function. The continuum fatigue optimization model is established with the independent continuous mapping (ICM) method. Secondly, fatigue life constraints are transformed to distortion energy… More >

  • Open Access

    ARTICLE

    Knowledge Mapping of Opuntia Milpa Alta Since 1998: A Scientometric Analysis

    Meixiang Chen1, Hong Yang1, Zhengda Song1, Yonghua Gu1,#,*, Yuhong Zheng1,2, Jiangwei Zhu3, Aiwu Wang4, Li Fu5,#,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1507-1518, 2021, DOI:10.32604/phyton.2021.015723

    Abstract Opuntia Milpa Alta is a cactus cultivated, domesticated, hybridized and selected from the plant Opuntia ficus-indica by Mexican agricultural experts, which can be used as fruit and vegetable. Opuntia Milpa Alta leaves and fruit are superior to wild varieties and suitable for storage and transportation. In 1998, Opuntia Milpa Alta was introduced to China from Mexico by the Quality Product Development Center of the Ministry of Agriculture of China. Up to now, the Opuntia Milpa Alta has been cultivated on a certain scale in China. This study aims to identify the research progress and development trends of Opuntia Milpa Alta… More >

  • Open Access

    ARTICLE

    Characterization and Candidate Gene Analysis of the Yellow-Green Leaf Mutant ygl16 in Rice (Oryza sativa L.)

    Linjun Cai1,#, Junhua Liu2,#, Han Yun1, Dan Du1, Xiaolong Zhong1, Zhenlin Yang1, Xianchun Sang1, Changwei Zhang1,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.4, pp. 1103-1117, 2021, DOI:10.32604/phyton.2021.015532

    Abstract Leaf color mutants are ideal materials for studying many plant physiological and metabolic processes such as photosynthesis, photomorphogenesis, hormone physiology and disease resistance. In this study, the genetically stable yellow-green leaf mutant ygl16 was identified from mutated “Xinong 1B”. Compared with the wild type, the pigment concentration and photosynthetic capacity of the ygl16 decreased significantly. The ultrastructural observation showed that the distribution of thylakoid lamellae was irregular in ygl16 chloroplasts, and the grana and matrix lamellae were blurred and loose in varied degrees, and the chloroplast structure was disordered, while the osmiophilic corpuscles increased. The results of the genetic analysis… More >

  • Open Access

    ARTICLE

    A Technical Framework for Selection of Autonomous UAV Navigation Technologies and Sensors

    Izzat Al-Darraji1,2, Morched Derbali3, Houssem Jerbi4, Fazal Qudus Khan3, Sadeeq Jan5,*, Dimitris Piromalis6, Georgios Tsaramirsis7

    CMC-Computers, Materials & Continua, Vol.68, No.2, pp. 2771-2790, 2021, DOI:10.32604/cmc.2021.017236

    Abstract The autonomous navigation of an Unmanned Aerial Vehicle (UAV) relies heavily on the navigation sensors. The UAV’s level of autonomy depends upon the various navigation systems, such as state measurement, mapping, and obstacle avoidance. Selecting the correct components is a critical part of the design process. However, this can be a particularly difficult task, especially for novices as there are several technologies and components available on the market, each with their own individual advantages and disadvantages. For example, satellite-based navigation components should be avoided when designing indoor UAVs. Incorporating them in the design brings no added value to the final… More >

  • Open Access

    ARTICLE

    Fine Mapping and Candidate Gene Prediction of the Quantitative Trait Locus qPL8 for Panicle Length in Rice

    Lin Zhang1,2,*, Yiting Zou1, Zhong Bian1, Dong Xie1, Hadi Yeilaghi1, Xiaolei Fan1,2, Dongsheng Zhao1,2, Qiaoquan Liu1,2,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 789-802, 2021, DOI:10.32604/phyton.2021.014880

    Abstract Rice panicle is the sink organ where assimilation product accumulates, and its morphology determines the rice yield. Panicle length has been suggested as a yield-related trait, but the genetic factor for its control is still limited. In this study, we carried out fine-mapping of qPL8, a QTL identified for panicle length in our previous work. Near isogenic line (NIL) with qPL8 exhibited elongated panicle without obvious effect on other panicle elements. With five key recombinants from NIL population, the locus was finally narrowed down to a 278-kb region, where 44 genes are annotated. By comparing the genomic sequence of two… More >

  • Open Access

    ARTICLE

    Phenotype Analysis and Fine Mapping of the Male Sterile Mutant ms10 in Rice (Oryza sativa L.)

    Gang Wei#, Hongxia Yang#, Jingwen Wu, Zixian Xiong, Nan Wang*

    Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 803-813, 2021, DOI:10.32604/phyton.2021.014505

    Abstract There is a positive correlation between fertility and yield, and the decrease of fertility is bound to a greatly reduced crop yield. Male sterile mutants can be used in hybrid rice. Therefore, rice male sterility has an important value in research and application, and the study of related mutants is also very vital. The mutant ms10 (male sterile 10) reported in this study was induced by ethyl methane sulfonate (EMS) in the indica maintainer line Xinong 1B. There was no significant difference between the ms10 and wild type in the vegetative growth stage. However, in the reproductive growth stage, ms10More >

  • Open Access

    ARTICLE

    A Fast and Accurate Vascular Tissue Simulation Model Based on Point Primitive Method

    Xiaorui Zhang1,2,*, Hailun Wu1, Wei Sun1, Aiguo Song3, Sunil Kumar Jha4

    Intelligent Automation & Soft Computing, Vol.27, No.3, pp. 873-889, 2021, DOI:10.32604/iasc.2021.013541

    Abstract Virtual surgery simulation is indispensable for virtual vascular interventional training system, which provides the doctor with visual scene between catheter and vascular. Soft tissue deformation, as the most significant part, determines the success or failure of the virtual surgery simulation. However, most soft tissue deformation model cannot simultaneously meet the requirement of high deformation accuracy and real-time interaction. To solve the challenge mentioned above, this paper proposes a fast and accurate vascular tissue simulation model based on point primitive method. Firstly, the proposed model simulates a deformation of the internal structure of the vascular tissue by adopting a point primitive… More >

  • Open Access

    ARTICLE

    Prediction and Limitations of Noise Maps Developed for Heterogeneous Urban Road Traffic Condition: A Case Study of Surat City, India

    Dipeshkumar R. Sonaviya*, Bhaven N. Tandel

    Sound & Vibration, Vol.55, No.1, pp. 57-68, 2021, DOI:10.32604/sv.2021.010715

    Abstract Road traffic noise pollution has been recognized as a serious issue which affects human health as well as affects urban regions. Noise maps are very beneficial to identify the impact of noise pollution. A noise mapping study performed to study the propagation of noise in tier-II city along with field measurements. The noise maps are developed using a computer simulation model (SoundPLAN essential 4.0 software). The noise prediction models like U.K’s CoRTN, Germany’s RLS-90, and their modified versions, which can be used for homogenous road traffic conditions, cannot be successfully applied in heterogeneous road traffic conditions of India. In developing… More >

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