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Search Results (19)
  • Open Access

    ARTICLE

    Biochar can Increase Chinese Cabbage (Brassica oleracea L.) Yield, Decrease Nitrogen and Phosphorus Leaching Losses in Intensive Vegetable Soil

    Haijun Sun1,2, Paramsothy Jeyakumar3, Hongdong Xiao2, Xuewen Li2, Jiayou Liu2, Min Yu2, Prabal Bir Jung Rana1, Weiming Shi2,4,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.1, pp. 197-206, 2022, DOI:10.32604/phyton.2022.016492

    Abstract

    There are few evidences on the effect of biochar on vegetable yield, nitrogen (N) and phosphorus (P) leaching losses under intensive vegetable production soil. The current field plot scale study evaluated responses of Chinese cabbage (Brassica oleracea L.) yield, N and P leaching losses using five N treatments of common N application rate according to local farmers’ practice (N100%), reducing 20% or 40% N fertilizer (N80% and N60%), and reducing 40% N fertilizer but incorporating 10 or 20 t/ha biochar (N60% + BC10 and N60% + BC20). Results showed that N80% and N60% decreased both the cabbage economic and leaf… More >

  • Open Access

    ARTICLE

    Biodegradable Behavior of Waste Wool and Their Recycled Polyester Preforms in Aqueous and Soil Conditions

    Sudhakar Muniyasamy1,2,*, Asis Patnaik3,*

    Journal of Renewable Materials, Vol.9, No.10, pp. 1661-1671, 2021, DOI:10.32604/jrm.2021.014904

    Abstract Present study deals with the biodegradable behavior of individual components and their preforms of nonwoven biocomposites developed from waste wool fibers including coring wool (CW), dorper wool (DW) and recycled polyester fibers (RPET). A respirometric technique was employed to estimate the production of CO2 during the biodegradation experiments under soil and aqueous media conditions. Functional groups of test samples before and after biodegradation were analyzed using Fourier transform infrared spectroscopy (FTIR). Leaching chemicals such as formaldehyde (hydrolyzed) and Chromium VI (Cr VI) was also measured. The CO2 emission in wool fibers CW and DW indicated 90% and 60% biodegradation in… More >

  • Open Access

    ARTICLE

    Improving Network Longevity in Wireless Sensor Networks Using an Evolutionary Optimization Approach

    V. Nivedhitha1,*, A. Gopi Saminathan2, P. Thirumurugan3

    Intelligent Automation & Soft Computing, Vol.28, No.3, pp. 603-616, 2021, DOI:10.32604/iasc.2021.016780

    Abstract Several protocols strive to improve network longevity but fail to ameliorate the uneven overhead imparted upon the sensor nodes that lead to temporal deaths. The proposed work uses a metaheuristic approach that promotes load balancing and energy-efficient data transmission using the fruit fly optimization algorithm (FFOA). The approach combines the LEACH protocol with differential evolution (DE) to select an optimum cluster head in every cluster. The algorithm is designed to provide energy-efficient data transmissions based on the smell and vision foraging behavior of fruit flies. The approach considers the compactness of nodes, energy capacity, and the distance of sensor nodes… More >

  • Open Access

    ARTICLE

    Enhanced KOCED Routing Protocol with K-means Algorithm

    SeaYoung Park1, Jong-Yong Lee2, Daesung Lee3,*

    CMC-Computers, Materials & Continua, Vol.67, No.3, pp. 4019-4037, 2021, DOI:10.32604/cmc.2021.014353

    Abstract Replacing or recharging batteries in the sensor nodes of a wireless sensor network (WSN) is a significant challenge. Therefore, efficient power utilization by sensors is a critical requirement, and it is closely related to the life span of the network. Once a sensor node consumes all its energy, it will no longer function properly. Therefore, various protocols have been proposed to minimize the energy consumption of sensors and thus prolong the network operation. Recently, clustering algorithms combined with artificial intelligence have been proposed for this purpose. In particular, various protocols employ the K-means clustering algorithm, which is a machine learning… More >

  • Open Access

    ARTICLE

    ECO-BAT: A New Routing Protocol for Energy Consumption Optimization Based on BAT Algorithm in WSN

    Mohammed Kaddi1,*, Abdallah Banana2, Mohammed Omari1

    CMC-Computers, Materials & Continua, Vol.66, No.2, pp. 1497-1510, 2021, DOI:10.32604/cmc.2020.012116

    Abstract Wireless sensor network (WSN) has been widely used due to its vast range of applications. The energy problem is one of the important problems influencing the complete application. Sensor nodes use very small batteries as a power source and replacing them is not an easy task. With this restriction, the sensor nodes must conserve their energy and extend the network lifetime as long as possible. Also, these limits motivate much of the research to suggest solutions in all layers of the protocol stack to save energy. So, energy management efficiency becomes a key requirement in WSN design. The efficiency of… More >

  • Open Access

    ARTICLE

    Utilization of Bayer Red Mud Derived from Bauxite for Belite-Ferroaluminate Cement Production

    Yanrong Zhao1,2,3,#, Ping Chen1,4,*,#, Shifeng Wang5, Yaxiong Ji3,4, Yuanhao Wang3,4,*, Bolin Wu1,2, Rongjin Liu1

    Journal of Renewable Materials, Vol.8, No.11, pp. 1531-1541, 2020, DOI:10.32604/jrm.2020.011462

    Abstract Bayer red mud (BRM) is a kind of industrial solid waste characterized by huge volume and high alkalinity. Its disposal generates serious environmental pollution and occupies a large number of farmland. The utilization and recycling of BRM is currently a crucial issue and needs to be addressed as soon as possible. The chemical composition of BRM is similar to cement clinker. In this study, the feasibility of preparing Belite-ferroaluminate clinker (BFAC) with different BRM was explored. The physical properties, mechanics performance, radioactivity levels and trace harmful metals leaching were measured. XRD, BEI and EDS were used to characterize the mineral… More >

  • Open Access

    ARTICLE

    Evaluation of a vermicompost and leachates on Solidago x hybrida and organic carbon mineralization under aerobic incubations

    Ramírez Gerardo MG1, MA Chávez-García2, J Mejía-Carranza2

    Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 397-406, 2015, DOI:10.32604/phyton.2015.84.397

    Abstract In the floriculture region of Tenancingo in the State of Mexico, the application of stabilized organic matter, such as vermicompost and leachates, contributes to improve the quality of the soil and plant nutrition. However, it is important to know the chemical composition of a vermicompost and the mineralization process. This is because the amount and speed of nutrient release which will be available to the crop will depend on that knowledge. The objective of the study was to evaluate the effect of the application of a vermicompost and leachates on various quantitative variables of Solidago x hybrid, and the mineralization… More >

  • Open Access

    ARTICLE

    Fabrication of Porous Scaffolds for Bone Tissue Engineering Using a 3-D Robotic System: Comparison with Conventional Scaffolds Fabricated by Particulate Leaching

    Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 179-180, 2006, DOI:10.32604/mcb.2006.003.179

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Selective Adsorption of Ag(I) from Electronic Waste Leachate Using Modified Silk Sericin

    Sijing Zhang1*, Fengjiao Ao1, Yongping Wang2, Junxue Zhao3, Yongliang Ji1, Shuangli Chen1

    Journal of Renewable Materials, Vol.6, No.1, pp. 102-116, 2018, DOI:10.7569/JRM.2017.634154

    Abstract A novel biosorbent was synthesized by grafting bisthiourea (BTU) on a silk sericin (SS) matrix. This biosorbent was denoted as BTU-SS and characterized by Fourier transform infrared spectroscopy (FTIR), zeta potential measurements, elemental analysis, and X-ray photoelectron spectroscopy (XPS). As revealed by the adsorption experiments, both BTU-SS and SS showed low affinity towards coexisting base metallic ions in Ag(I)-Cu(II)-Zn(II)-Ni(II)-Pb(II) electronic waste leachate mixtures, while their adsorption capacities towards Ag(I) reached 30.5 and 10.4 mg·g–1 at a pH of 5.0, respectively. BTU-SS showed higher selectivity towards Ag(I) than SS, as revealed by the Ag(I) partition coefficients between the biosorbents and the… More >

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