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  • Open Access

    ARTICLE

    Photodegradation and Removal of Diclofenac by the Green Alga Nannochloropsis oculata

    Danaé Samara Sánchez-Sandoval#, Omar González-Ortega#, Mara Fernanda Navarro-Martínez, Juan Marcos Castro-Tapia, Ramón Fernando García de la Cruz, Ruth Elena Soria-Guerra*

    Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1519-1533, 2021, DOI:10.32604/phyton.2021.015087

    Abstract The emerging contaminants (ECs) are organic compounds including pharmaceuticals. These products are consumed in large quantities, favoring their continuous entrance to the environment and affecting the health of living beings. Diclofenac is a non-steroidal anti-inflammatory drug with analgesic properties of prolonged release. It is the commonest postoperative analgesic, and it is highly consumed without prescription. In recent years, the capability of microalgae to remove pharmaceuticals in water has been tested as a promising tool. In this work, the removal efficiency of diclofenac (16 µg/mL) by the microalga Nannochloropsis oculata CCAP 186/7 was evaluated. The major nutrient concentrations in Bold’s Basal… More >

  • Open Access

    ARTICLE

    Integrated Fertilization Regimes Boost Heavy Metals Accumulation and Biomass of Sedum alfredii Hance

    Kangning Zhou1, Yingying Zhang1, Jiasen Wu1, Chunying Dou1,2, Zihao Ye1, Zhengqian Ye1,3,*, Weijun Fu1,3,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.4, pp. 1217-1232, 2021, DOI:10.32604/phyton.2021.014951

    Abstract

    The hyperaccumulator Sedum alfredii Hance (S. alfredii) may be employed for zinc (Zn) and cadmium (Cd)-polluted soil remediation. However, the low phytoremediation efficiency, related to the low biomass production, limits its use with that purpose. In this experiment, nitrogen (N), phosphorus (P), and potassium (K) fertilizers, and organic manure were applied to investigate the phytoremediation ability of S. alfredii. Hydroponic and pot experiments were conducted using Zn-Cd polluted soil. The hydroponic experiment indicated that appropriate fertilizer application could increase (p < 0.05) the amount of accumulated Zn and Cd in S. alfredii. When N supply ranged from 0.5 to 2.5… More >

  • Open Access

    ARTICLE

    Community Workers’ Social Support and Sleep Quality during the Coronavirus Disease 2019 (COVID-19): A Moderated Mediation Model

    Guanghui Lei1, Caihong Yang2,#, Yan Ge3,#, Yan Zhang2,*, Yufei Xie4,*, Jianwen Chen2, Jinyang Wu5

    International Journal of Mental Health Promotion, Vol.23, No.1, pp. 121-140, 2021, DOI:10.32604/IJMHP.2021.013072

    Abstract To explore the relationship between social support and sleep quality of community workers in Wuhan during the coronavirus disease 2019 (the COVID-19 infection epidemic), this research constructed a mediating effect model to explore the mediating psychological mechanism of social support influencing sleep quality of front-line community workers. A total of 500 front-line community workers in Wuhan were investigated. We used the perceived social support scale (PSSS), the Connor-Davidson Resilience Scale (CD-RISC), the perceived stress scale (PSS), and the Pittsburgh sleep quality index (PSQI) to measure social support, psychological resilience, perceived stress and sleep quality. Specifically, the higher the PSQI, the… More >

  • Open Access

    ARTICLE

    Alleviation of Cadmium Toxicity to Medicago Truncatula by AMF Involves the Changes of Cd Speciation in Rhizosphere Soil and Subcellular Distribution

    Yuying Jiang1,#, Renhua Huang1,#, Lei Jiang1, Ke Chen1,*, Wenkun Zhu2,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 403-415, 2021, DOI:10.32604/phyton.2021.014376

    Abstract Arbuscular mycorrhizal fungi (AMF) can improve plant tolerance to several abiotic stresses, including heavy metals, drought or salinity exposure. However, the role of AMF in alleviation of soil cadmium (Cd)-induced toxicity to plants is still largely unknown. In this study, Cd speciation in soil and subcellular distribution of Cd were used to characterize the roles of application AM fungi in the alleviation of Cd toxicity in alfalfa plants. Our results showed that the addition of Glomus mosseae in Cd contaminated soil (10 mg/Kg) significantly increased soil pH, cation exchange capacity (CEC) and organic matter in rhizosphere soil with Medicago truncatulaMore >

  • Open Access

    ARTICLE

    Between Chronic Diseases and Geriatric Depression: Mediational Effects of Activities of Daily Living (ADLs) Disability Among Older Adults

    Yi Yang1,2,* , Tao Li3

    International Journal of Mental Health Promotion, Vol.22, No.4, pp. 249-259, 2020, DOI:10.32604/IJMHP.2020.014321

    Abstract This study is aimed to explore relations between chronic diseases, activities of daily living (ADLs) disability and depression among older adults, particularly ADLs disability mediational effects on the correlation between chronic diseases and geriatric depression. Records of 5931 participants at age 60 and above from China Health and Retirement Longitudinal Study (CHARLS) in 2015 were used as valid samples for data relating to their chronic diseases index, ADLs scale and Center for Epidemiologic Studies Depression (CES-D) scale. Our findings confirm that among older adults, 75.9% are afflicted with chronic diseases and 52.5% have ADLs difficulty or disability, and that there… More >

  • Open Access

    REVIEW

    Sustainable Utilization of Agricultural Straw for Harmful Algal Blooms Control: A Review

    Kokoette Effiong1, Jing Hu1, Caicai Xu1, Tao Tang1, Haomin Huang2, Jiangning Zeng1,3, Xi Xiao1,3,4,*

    Journal of Renewable Materials, Vol.8, No.5, pp. 461-483, 2020, DOI:10.32604/jrm.2020.09111

    Abstract The use of agricultural straw for algal bloom control has been studied for more than 30 years. In this article, we have reviewed the promising potentials of using agricultural straw as source of anti-algal agents, including the effectiveness of each major straw type so far used in this regard, and the investigated algal species. Various pre-treatment methods have also been widely reviewed. Signifi- cant progress has been made in natural product chemistry and molecular biology with regards to agricultural straw, especially in relation to the extraction of antialgal allelochemicals, degradation processes of agricultural straws and the mechanisms through which these… More >

  • Open Access

    ARTICLE

    The Mediating Role of Job Satisfaction in the Relationship between Disaster Relief Workers’ Perception of Survivors’ Rights and Their Performance of Human Rights Advocacy

    Yun-Jung Choi#, Eunjung Ko#,*

    International Journal of Mental Health Promotion, Vol.22, No.1, pp. 19-27, 2020, DOI:10.32604/IJMHP.2020.010883

    Abstract This study aimed to investigate the mediating effect of disaster relief workers’ job satisfaction in the relationship between their perception of survivors’ rights and their performance of human rights advocacy. Two hundred disaster relief workers in Korea were invited to complete structured questionnaires pertaining to their perception of survivors’ rights, job satisfaction, and their performance of human rights advocacy, and the relationships between these variables were analyzed using correlation and multiple regression analysis. There were significant positive correlations between disaster relief workers’ perception of survivors’ rights, job satisfaction, and performance of human rights advocacy in this study. The higher their… More >

  • Open Access

    ARTICLE

    How Does Proactive Personality Promote Affective Well-Being? A Chained Mediation Model

    Lu Xin1, Mengyi Li2,*, Fangcheng Tang1, Wenxia Zhou2, Wenxi Wang3

    International Journal of Mental Health Promotion, Vol.21, No.1, pp. 1-11, 2019, DOI:10.32604/IJMHP.2019.010808

    Abstract Based on social cognitive career theory, this research examined a chained mediation model for the relations between proactive personality, career success criteria clarity, career decision-making self-efficacy and affective wellbeing. A two-wave survey study was conducted among Chinese graduating students (N = 235). The results showed that proactive personality (measured at time 1), career success criteria clarity (measured at time 1), and career decisionmaking self-efficacy (measured at time 2) positively related to affective well-being respectively. In addition, the results further revealed that proactive personality was positively related to career success criteria clarity, which further predicted affective well-being through the full mediation… More >

  • Open Access

    ARTICLE

    Effect of hydrocarbon concentration of pasture production (Brachiaria humidicola) in Texistepec, Veracruz

    Adams RH, AL Álvarez-Ovando, G Castañón N

    Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 222-232, 2015, DOI:10.32604/phyton.2015.84.222

    Abstract In this study, the relationship between the concentration of extra-heavy crude petroleum in a clayey material and the toxicity, field capacity, temperature, and growth of a tropical forage grass (Brachiara humidicola) was determined empirically. For this type of petroleum the acute toxicity (Microtox®) was slight (CE50 = 63200 - 76400 mg/kg) even at high hydrocarbon concentrations (29279 mg/kg). Nonetheless, serious impacts were encountered in terms of an increase in soil temperature (+ 1.3 °C), reduction in field capacity (-10.7%) and reduction in aerial biomass (-97%). The relationship between hydrocarbon concentration and biomass resulted in a typical dose-response curve (r =… More >

  • Open Access

    ARTICLE

    Role of macroalgae in biomonitoring of pollution in «Marchica», the Nador lagoon

    Ben Chekroun K1, A Moumen1, N Rezzoum2, E Sánchez3, M Baghour1

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 31-34, 2013, DOI:10.32604/phyton.2013.82.031

    Abstract The Aquatic system contamination by organic pollutants and heavy metals is one of the most serious problems that might face the environment and organisms as a whole. Interestingly, the accumulation of these pollutants is due to the anthropogenic activity, namely the intensive use of fertilizers to obtain high yields in crop production. In this paper, we compared the levels of chlorophylls, proteins, dry weight and sucrose in some red (Alsidium sp. and Gracilaria sp.) and green algae (Ulva sp.) collected from Mohandis, near Kariat and Bou Areg. Our results indicate that the algae collected nearby Bou Areg, an area well-known… More >

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