Xu Yan¹, Changheng Liu², Liang Qiao¹, Kaili Zhu², Hongsheng Tan^1,*, Shuhua Dong¹, Zhitao Lin¹

Journal of Renewable Materials, Vol.10, No.4, pp. 1039-1048, 2022, DOI:10.32604/jrm.2022.017239

Abstract The crystallization behavior, crystal morphology and form, and viscoelastic behavior of poly(butylene succinate) (PBS) and coir fiber/PBS composites (CPB) were investigated by differential scanning calorimetry (DSC), polarized optical microscopy (POM), X-ray diffraction (XRD) and dynamic mechanical analysis (DMA). The results of DSC measurement show that the crystallization temperature increases with the filling of coir fibers. POM images reveal that the spherulitic size and crystallization behavior of PBS are influenced by the coir fibers in the composites. XRD curves show that the crystal form of pure PBS and CPB are remaining almost identical. In addition, the storage modulus of CPB significantly… More >

Liefei Pei, Xiangyun Zhang, Zizhou Yuan^*

Journal of Renewable Materials, Vol.10, No.4, pp. 955-968, 2022, DOI:10.32604/jrm.2022.016961

Abstract Fe-Si-B amorphous zero-valent iron has attracted wide attention because of its efficient remediation of heavy metals and dye wastewater. In this paper, the remediation effect of amorphous zero-valent iron powder (Fe₇₈Si₉B₁₃^AP) on Ni contaminated soil was investigated. Results show that the immobilization efficiency of nickel in soil by Fe₇₈Si₉B₁₃^AP with low iron content is higher than that by ZVI. The apparent activation energies of the reactions of Fe₇₈Si₉B₁₃^AP with Ni²⁺ ions is 25.31 kJ/mol. After continuing the reaction for 7 days, Ni²⁺ ions is mainly transformed into monoplasmatic nickel (Ni⁰) and nickel combined with iron (hydroxide) oxides. Microstructure investigations show… More >

Xiang Deng¹, Sudong Hua^1,*, Fan Xia², Yanfang Zhang², Dapeng Guo³, Xinxing Zhu³, Defei Zhu³

Journal of Renewable Materials, Vol.10, No.4, pp. 939-953, 2022, DOI:10.32604/jrm.2022.016874

Abstract Recycled powder (RP) is produced as a by-product during the process of recycling construction and demolition (C&D) wastes, presenting a low additional value. Using RP-based solidifying material can not only improve its utilization efficiency, but also reduce the cost of commercial solidifying materials. To date, this is the best solidifying material utilized to dispose the original waterworks sludge (OWS) with high moisture contents (60%), and the product could be used to fabricate non-fired bricks. This has become a new environment-friendly technology of “using waste to treat waste”. In this paper, the influence of different particle sizes and dosages of RP… More >

Song Yang¹, Bing Qi¹, Zubin Ai¹, Zhensheng Cao¹, Shiqin He^2,*, Lijun Li³

Journal of Renewable Materials, Vol.10, No.4, pp. 897-908, 2022, DOI:10.32604/jrm.2022.016653

Abstract It has become a research hotspot to explore raw material substitutes of concrete. It is important to research the mechanical properties of self-compacting concrete (SCC) with slag powder (SP) and rubber particle (RP) replacing cement and coarse aggregate, respectively. 12 kinds of composite modified self-compacting concrete (CMSCC) specimens were prepared by using 10%, 20% and 30% SP and 30%, 40%, 50% and 60% RP. The rheological properties, mechanical properties and microstructure of the CMSCC were investigated. Results indicate that the workability, compressive strength, splitting tensile strength and flexural strength of CMSCC prepared by 20% SP and less than 40% RP… More >

Yong Chen¹, Yinghao Huang^1,2,*, Min Wu¹ and Shuo Wang¹

Journal of Renewable Materials, Vol.10, No.4, pp. 1153-1173, 2022, DOI:10.32604/jrm.2022.018856

Abstract Phase change materials (PCMs) can store large amounts of energy in latent heat and release it during phase changes, which could be used to improve the freeze-thaw performance of soil. The composite phase change material was prepared with paraffin as the PCM and 8% Class C fly ash (CFA) as the supporting material. Laboratory tests were conducted to reveal the influence of phase change paraffin composite Class C fly ash (CFA-PCM) on the thermal properties, volume changes and mechanical properties of expansive soil. The results show that PCM failed to establish a good improvement effect due to leakage. CFA can… More >

Sha Shen¹, Saidi Wang^2,*, Md Zahir Ahmed³, Fatema Akhter Hiramoni⁴, Jingrong Sha¹, Xiangdong Yan⁵, Mary C. Jobe⁶ and Oli Ahmed⁷

International Journal of Mental Health Promotion, Vol.23, No.4, pp. 499-511, 2021, DOI:10.32604/IJMHP.2021.018661

Abstract This study examined the moderating effects of parent-child, same-sex, opposite-sex and teacher-student relationships between sibling status and loneliness during COVID-19. A total of 1,591 adolescents in China completed the study questionnaires which assessed the aforementioned variables. The results showed that same-sex and teacherstudent relationships moderated the association between sibling status and loneliness. The results indicated that among participants with good same-sex relationships during COVID-19, compared to non-only-children participants, the only-children participants were more likely to experience a lower level of loneliness. However, participants with poor same-sex relationships experienced similar level of loneliness regardless of whether they had siblings. These findings… More >

Alan E. Kazdin^*

International Journal of Mental Health Promotion, Vol.23, No.4, pp. 429-442, 2021, DOI:10.32604/IJMHP.2021.019135

Abstract The Kazdin Method™ is a version of parent management training in which parents are trained to alter the behaviors of their children. The method draws on the principles and techniques of applied behavior analysis. The techniques focus on antecedents (what comes before the behavior), behavior (crafting the precise behaviors one wishes to develop), and consequences (usually praise to increase the likelihood that the desired behaviors will be performed again). The key focus is repeated practice in changing parent and child behaviors. The article traces the evolution of my use of parent training to treat severe aggressive and antisocial behavior among… More >

Yi Yang^1,*, Tao Li², Lijun He^3,4

International Journal of Mental Health Promotion, Vol.23, No.4, pp. 521-531, 2021, DOI:10.32604/IJMHP.2021.019290

Abstract The present study discusses the relationship among Chinese adolescents’ parental involvement, core self-evaluation, and school adaptation. The Parental Involvement Behavior Questionnaire, Core Self-Evaluations Scale (CSES), and the School Adaptation Inventory were used to survey 1258 Chinese middle school students. The results showed that adolescents’ school adaptation was significantly positively correlated with parental involvement and core self-evaluation. Furthermore, parental involvement and core self-evaluation were positively correlated. Mediation analysis found that core self-evaluation had partially mediated the relationship between adolescents’ parental involvement and school adaption. Parental involvement could directly affect adolescents’ school adaptation and indirectly affect school adaptation through the mediating effect… More >

Fang Wu¹, Qian Yu¹, Kangran Wang¹, Hong Gao^2,3,*

International Journal of Mental Health Promotion, Vol.23, No.4, pp. 545-564, 2021, DOI:10.32604/IJMHP.2021.017877

Abstract A harmonious relationship between teachers and postgraduates presents the comprehensive value of psychological education, which guarantees training quality and acts as an effective carrier of mental health education of the postgraduates. Based on Bandura’s theory of reciprocal determinism and Austin’s input-output theory, this paper constructs a model concerning the value of psychological education in the tutor-student relationship. The path of realization is also explored in a structural equation model through a questionnaire survey of 1112 graduate supervisors and administrators in medical colleges. The experimental result indicates that (1) The interaction between teachers and postgraduates promotes the value of psychological education… More >

Maamer Slimani^1,2,*, Nicola Bragazzi³, Amri Hammami², Hela Znazen⁴, Qian Yu^5,6, Zhaowei Kong⁶, Liye Zou⁵

International Journal of Mental Health Promotion, Vol.23, No.4, pp. 513-520, 2021, DOI:10.32604/IJMHP.2021.017639

Abstract The present study aimed to determine the effect of wearing a face mask during aerobic dance exercise on cognitive function, more specifically on attention, as well as on perceived exertion and mood states. Thirteen healthy college students (9 males and 4 females: mean age = 17.5 years, height = 1.72 m, weight = 71.00 kg) volunteered to participate in this study. They were randomized to perform aerobic dance exercise while wearing a cloth face mask or no mask or a control condition (sitting on a comfortable chair and reading information about the health benefits of aerobic dance exercise) on three separate occasions (with at least one week of… More >