Zhi-Yu Yang, Yi-Ling Chou, Hao-Chun Yang, Chin-Wen Chen^*, Syang-Peng Rwei^*

Journal of Renewable Materials, Vol.9, No.5, pp. 867-880, 2021, DOI:10.32604/jrm.2021.014476 - 20 February 2021

Abstract A series of thermoplastic polyester elastomer (TPEE) and thermoplastic poly(ester amide)s elastomer (TPEaE) copolymers were obtained by depolymerizing PET (polyethylene terephthalate) by which the waste PET can be efficiently recovered and recycled into value-added products from a practical and economical point of view. The structure of TPEE and TPEaE was identified using nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR). Differential scanning calorimetry (DSC) data showed that the melting temperature (T_m) decreased with the amide content increased. The glass transition temperature (T_g) was increased as introducing the amide group, and the formation of amide-ester More >

Jaša Saražin¹, Antonio Pizzi², Siham Amirou², Detlef Schmiedl³, Milan Šernek^1,*

Journal of Renewable Materials, Vol.9, No.5, pp. 881-907, 2021, DOI:10.32604/jrm.2021.015047 - 20 February 2021

Abstract A non-isocyanate-based polyurethane (NIPU) wood adhesive was produced from organosolv lignin, which is a bio-sourced raw material, available in large quantities and produced as a by-product of the paper industry. The formulation of this new lignin-based NIPU adhesive, which is presented, was chemically characterised by Matrix-Assisted Laser Desorption Ionization Time of Flight (MALDI ToF) mass spectrometry and by Fourier Transform Infra-Red (FTIR) spectrometry analyses. The oligomers formed were determined and showed that the three species involved in the NIPU adhesive preparation were formed by the co-reaction of the three reagents used: lignin, dimethyl carbonate, and… More >

Jianmin Wu^*, Bingbing Zhang, Chunsheng Wu, Zhiqiang Shu, Shaoqing Li, Jianqi Yang

Journal of Renewable Materials, Vol.9, No.5, pp. 993-1011, 2021, DOI:10.32604/jrm.2021.014304 - 20 February 2021

Abstract In order to improve the utilization of milling materials, save stone resources and reduce milling energy consumption, the aged Styrene-butadiene-styrene (SBS) modified asphalt was used as a binder to prepare AC-16 asphalt mixture to simulate old asphalt pavement materials. First, the test and discrete element simulation results of uniaxial compression tests were used to calibrate the parameters of the parallel bonding contact model between asphalt mortar and aggregates. On this basis, a microscopic model of the asphalt mixture was established to simulate the old asphalt pavement. Then, the discrete element software PFC (Particle Flow Code)… More >

Sadaqat Ullah Khan¹, Afzal Ahmed^1,*, Sajjad Ali², Ayesha Ayub², Ahmed Shuja¹, Muhammad Ahsan Shahid¹

Journal of Renewable Materials, Vol.9, No.5, pp. 1013-1029, 2021, DOI:10.32604/jrm.2021.014344 - 20 February 2021

Abstract Scrapped tires from vehicles are produced in large quantities. Despite numerous existing uses of scrapped tires, a large quantity ends up at the landfill sites, which contributes to environmental degradation. The development of more applications of scrapped tire usage can reduce the disposal of tires at landfill sites. This research proposes a novel use of scrapped tires by using the strips taken from scrapped tires in replacement of steel bars as reinforcement. Manhole covers were produced using scrapped tires by completely replacing the steel with scrapped tires. Four different samples of manhole covers were prepared… More >

Zhichao Lou^1,2, Tiancheng Yuan¹, Qiuyi Wang¹, Xinwu Wu¹, Shouheng Hu¹, Xiaomeng Hao¹, Xianmiao Liu^3,*, Yanjun Li^1,*

Journal of Renewable Materials, Vol.9, No.5, pp. 959-977, 2021, DOI:10.32604/jrm.2021.014285 - 20 February 2021

Abstract This work aimed to help the bamboo industry develop methodology for producing imperfection-free bamboo boards that can serve either decorative or structural benefit to consumers seeking to engage with the bioeconomy. Specifi- cally, softened and slotted bamboo tubes were handled by a roller device with nails to render crack-free flattened bamboo board. Softening temperature and time were optimized herein according to findings regarding chemical composition and board mechanical properties. The optimal softening parameters for saturated steam heat treatment is proved to be 160°C for 8 minutes. The flattened bamboo board possesses an increased bending strength… More >

Yipu Wang¹, Yonghua Wang^1,2,*, Zheming Liu¹, Huadong Yu¹, Jinkai Xu¹

Journal of Renewable Materials, Vol.9, No.5, pp. 923-941, 2021, DOI:10.32604/jrm.2021.014138 - 20 February 2021

Abstract Noise pollution is one of the contemporary environmental pollution, which seriously damages people’s green and healthy life. In order to further improve the low frequency sound absorption performance of microperforated panel (MPP), a new plastocene coupled microperforated plate (PCMPP) is proposed. The acoustic properties of PCMPP with different apertures and perforation ratio were measured by transfer function method and compared with that of conventional MPPs. It is found that when the aperture was 0.8 mm, the peak value of sound absorption coefficient of PCMPP decreased by 150 Hz compared with MPP. In a certain range,… More >

POOJA BHADRECHA¹, MADHU BALA^2,3, VIKAS KAUSHIK⁴, NASEEM A. GAUR⁵, SIMRANJEET SINGH⁴, JOGINDER SINGH^4,*, MANOJ KUMAR^6,*

BIOCELL, Vol.45, No.2, pp. 387-394, 2021, DOI:10.32604/biocell.2021.013824 - 19 February 2021

Abstract Hippophae rhamnoides L. is a plant of immense ethnopharmacological importance and is a known source for various valuable biochemicals and nutraceuticals. The production of folate, a vitamin involved in several vital functions, in this plant is rather poorly understood. Herein, we investigate the hypothesis that rhizobial bacteria serve the plant in this essential vitamin’s biosynthesis. Bacterial strains of Bacillus, Azorhizobium, Frankia, Paenibacillus, Brevibacillus and Pseudomonas, were isolated from the rhizosphere of the plant. HPLC and LCMS were used to trace the production of intra and extra-cellular folate by representative rhizospheric bacterial strains in vitro. From the seventeen functionally characterized bacterial More >

YUE WANG, YUNFEI ZHENG^*, WEIRAN LI^*

BIOCELL, Vol.45, No.2, pp. 427-444, 2021, DOI:10.32604/biocell.2021.013960 - 19 February 2021

Abstract Orthodontic tooth movement is triggered by orthodontic force loading on the periodontal ligament and is achieved by alveolar bone remodeling, which is regulated by intimate crosstalk between osteoclastogenesis and osteoblast differentiation. Whether the communication between osteoclasts and osteoblasts is influenced by orthodontic compression stress requires further clarification. In this study, osteoclasts were differentiated for 10 days. On day 4 of differentiation, the number of pre-osteoclasts peaked, as determined by the increased expression of RANK and the number of multinucleated cells. After 24 h of compression stress loading, on day 4, the number of osteoclasts increased,… More >

XIAOYU WANG^1,2,#,*, TAKESHI YAMAMOTO^2,#, MAKOTO KADOWAKI², YIFU YANG¹

BIOCELL, Vol.45, No.2, pp. 395-415, 2021, DOI:10.32604/biocell.2021.012280 - 19 February 2021

Abstract Mast cells are the main effector cells in IgE-associated allergic disorders, and we have reported that mucosal mast cells (MMCs) play a more important role in the development of food allergy (FA). IgE with antigen or calcium ionophore stimulation can lead to the activation of MMCs via a calcium-dependent pathway. The purpose of the present study was to identify gene signatures with IgE/antigen (dinitrophenyl-bovine serum albumin, DNP-BSA) or calcium ionophore (A23187) on the activation of MMCs. Differentially expressed genes between the two types of samples were identified with microarray analysis. Gene ontology functional and pathway… More >

YUQING HE¹, LI GUO¹, JUAN DING¹, HAOWEN LV¹, QUANRUI MA¹, CHEN LI¹, YU SHAO¹, QIANG LIU¹, CHUN ZHANG¹, HAO YANG^1,2,*, JUAN LIU^1,*

BIOCELL, Vol.45, No.2, pp. 417-426, 2021, DOI:10.32604/biocell.2021.013842 - 19 February 2021

Abstract Schizophrenia is a common and serious mental illness characterized by severe impairments in thinking, emotions, and behaviors. Usually, the cognitive deficits of schizophrenia are closely associated with abnormal neurogenesis due to the hypofunction of certain neural receptors such as N-methyl-D-aspartate receptors (NMDARs), which mediates neurotransmission. However, little is known about the involvement of NMDAR1 in regulating hippocampal neurogenesis in schizophrenia. In the current study, we present evidence suggesting that NMDAR1 regulates hippocampal neurogenesis as lentivirus-mediated shRNA silencing NMDAR1 gene or blocking with MK-801 results in abnormal neurogenesis consistently found in schizophrenia. The important finding was More >