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  • Open Access


    A Calculation Method of Double Strength Reduction for Layered Slope Based on the Reduction of Water Content Intensity

    Feng Shen1,*, Yang Zhao1, Bingyi Li1, Kai Wu2

    CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.1, pp. 221-243, 2024, DOI:10.32604/cmes.2023.029159

    Abstract The calculation of the factor of safety (FOS) is an important means of slope evaluation. This paper proposed an improved double strength reduction method (DRM) to analyze the safety of layered slopes. The physical properties of different soil layers of the slopes are different, so the single coefficient strength reduction method (SRM) is not enough to reflect the actual critical state of the slopes. Considering that the water content of the soil in the natural state is the main factor for the strength of the soil, the attenuation law of shear strength of clayey soil… More >

  • Open Access


    Effect of Polypropylene Fiber on the Unconfined Compressive Strength of Loess with Different Water Content

    Wankui Ni1, Jiaxin Zhong1,2, Haiman Wang1,*

    Journal of Renewable Materials, Vol.11, No.4, pp. 1699-1814, 2023, DOI:10.32604/jrm.2022.023805

    Abstract Fiber-reinforced soils have been of great interest to experimenters for building foundations’strength performance, time, and economy. This paper investigates the effects of water content and polypropylene fiber dosage and length on loess’s unconfined compressive strength (UCS) according to the central composite response surface design test procedure. The water content is 11%–25%, the mass ratio of fiber to soil is 0.1%–0.9%, and the fiber length ranges from 6–18 mm. The response surface method (RSM) developed full quadratic models of different variables with response values. After analysis of variance (ANOVA), the mathematical model developed in this study More > Graphic Abstract

    Effect of Polypropylene Fiber on the Unconfined Compressive Strength of Loess with Different Water Content

  • Open Access


    Analysis of the Performances and Optimization of Polyurethane Concrete with a Large Percentage of Fly Ash

    Tingting Huo1, Jiaquan Xue2,*, Zhi’an Fu3

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.2, pp. 437-450, 2023, DOI:10.32604/fdmp.2022.020696

    Abstract The properties of polyurethane concrete containing a large amount of fly ash are investigated, and accordingly, a model is introduced to account for the influence of fly ash fineness, water ratio, and loss of ignition (LOI) on its mechanical performances. This research shows that, after optimization, the concrete has a compressive strength of 20.8 MPa, a flexural strength of 3.4 MPa, and a compressive modulus of elasticity of 19.2 GPa. The main factor influencing 28 and 90 d compressive strength is fly ash content, water-binder ratio, and early strength agent content. More >

  • Open Access


    Potassium-Induced Regulation of Cellular Antioxidant Defense and Improvement of Physiological Processes in Wheat under Water Deficit Condition

    Abdul Awal Chowdhury Masud1, Md. Fazlul Karim1, M. H. M. Borhannuddin Bhuyan2, Jubayer Al Mahmud3, Kamrun Nahar4, Masayuki Fujita5, Mirza Hasanuzzaman1,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 353-372, 2021, DOI:10.32604/phyton.2021.013259

    Abstract Drought is the most common form of abiotic stress that reduces plant growth and productivity. It causes plant injuries through elevated production of reactive oxygen species (ROS). Potassium (K) is a vital plant nutrient that notably ameliorates the detrimental effect of drought stress in the plant. A pot experiment was conducted at the Laboratory of Plant Stress Responses, Faculty of Agriculture, Kagawa University, Japan, under controlled environment of green house to explore the role of K in mitigating drought severity in wheat (Triticum asevitum L.) seedlings. Three days after germination, seedlings were exposed to three water… More >

  • Open Access


    Numerical Evaluation of Residual Water Content after Freezing during the Lyophilization of Platelets

    Shaozhi Zhang, Ruoyi Xie, Mengjie Xu, Guangming Chen*

    FDMP-Fluid Dynamics & Materials Processing, Vol.16, No.6, pp. 1177-1189, 2020, DOI:10.32604/fdmp.2020.010352

    Abstract Pre-freezing is an important stage in freeze-drying processes. For the lyophilization of a cell, freezing not only plays a role for primary dehydration, but it also determines the amount of residual (intracellular or extracellular) water, which in turn can influence the solution properties and the choice of operation parameters. The freezing of human platelets in lyoprotectant solution is theoretically investigated here. A two-parameter model and an Arrhenius expression are used to describe cell membrane permeability and its temperature dependency. It is assumed that the intracellular solution is composed of four components: sodium chloride, trehalose, serum… More >

  • Open Access


    Stress Ameliorative Effects of Indole Acetic Acid on Hordeum vulgare L. Seedlings Subjected to Zinc Toxicity

    Monika Sood1, Shanti S. Sharma1, Joginder Singh1, Ram Prasad2,3,*, Dhriti Kapoor1,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.1, pp. 71-86, 2020, DOI:10.32604/phyton.2020.07180

    Abstract The heavy metals present in the environment accumulate in the plants and affect their productivity and yield. By entering the food chain, metals cause several serious health problems in human beings as well as in other organisms. Indole acetic acid (IAA) is known to act as a signaling molecule between symbiotic association of metal accumulating plants and plant growth promoting rhizobacteria (PGPR). Present study demonstrated a protective role of IAA against surplus Zinc (Zn)-induced toxicity to Hordeum vulgare seedlings. Elevated Zn concentrations suppressed the plant growth, caused a reduction in leaf relative water contents (RWC) and More >

  • Open Access

    Characteristics of Fry-Drying and Solid Refuse Fuels for Organic Wastes with High Water Content

    Taein Ohm1*, Jongseong Chae1, Younghyo Kim1, Seunghyun Moon2

    Journal of Renewable Materials, Vol.5, Suppl.1, pp. 13-21, 2017, DOI:10.7569/JRM.2017.634127

    Abstract With the dramatic increase in the quantity of organic wastes, economic and environmentally friendly technologies are urgently required for reducing the volume of sludge and remediating its harmful impacts. In this study, drying experiments were performed on sludge through fry-drying technology and the characteristics of the resulting fuels were investigated to identify proper methods for treating sewage sludge, wastewater sludge, swine excreta, and food waste and converting them into fuels. The four types of organic wastes were fry-dried, and the best drying conditions were found to be 140 °C for 8 min for sewage sludge More >

  • Open Access


    Influence of woody species on aerial growth of perennial grasses in semi-arid rangelands of central Argentina

    Blazquez FR1,2,3, DV Peláez1,3,4, RJ Andrioli1, OR Elia1,2,3

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 397-405, 2014, DOI:10.32604/phyton.2014.83.397

    Abstract The interaction between woody and grass species in semi-arid rangelands of central Argentina was assessed through the evaluation of the impact of woody species on grass growth over a 2-y period. The study comprised two morpho-physiologically different woody species and two cool-season perennial grass species highly preferred by domestic livestock. The study involved the assessment of total green length (TGL) and number of green leaves (NGL) per tiller in grasses growing beneath the canopy of woody species and in open rangeland areas. Soil temperature, pH and water, nitrogen, phosphorus and organic matter content were estimated… More >

  • Open Access


    Fruit development of two high oleic safflower (Carthamus tinctorius L.) cultivars

    Franchini MC1, AC F lemmer1, LI Lindström1, MA David2, PA Fernandez3

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 379-388, 2014, DOI:10.32604/phyton.2014.83.379

    Abstract The purpose of this study was to describe fruit development in two high oleic safflower (Carthamus tinctorius L.) cultivars during four growing seasons. Pericarp histogenesis, and dynamics of pericarp and seed dry weight and fruit water content were studied. The dynamics of the pericarp and seed growth was similar between cultivars and years. The pericarp completed its growth before the seed. Pericarp potential size was already set at anthesis as no cell division was observed at this time. Maximum pericarp dry weight was achieved 8 days after anthesis, when cell wall lignification concluded. At this time,… More >

  • Open Access


    Influence of heat stress on growth and physiological activities of potato (Solanum tuberosum L.)

    Naz N1, F Durrani1, Z Shah2, NA Khan1, I Ullah1

    Phyton-International Journal of Experimental Botany, Vol.87, pp. 225-230, 2018, DOI:10.32604/phyton.2018.87.225

    Abstract The progress and development of crops like potato are harmfully affected by increased heat stress throughout the world. Stress caused by increased heat adversely affects germination and seedling growth which result in a reduced crop development and yield. The present research was carried out to know the influence of heat stress on growth indices and physiological processes of potato (Solanum tuberosum L.). The heat stresses C- Control (25 °C); T1-45 °C, and T2-40 °C were applied in separate growth chambers to the plants, after 25 days from their germination. Increased heat stress considerably decreased the chlorophyll More >

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