Journal of Polymers and the Environment最新文献

{"title":"High Strength Composites from Wastewater Sludge, Plant Oils, and Fossil Fuel By-Product Elemental Sulfur","authors":"Katelyn A. Tisdale,&nbsp;Shalini K. Wijeyatunga,&nbsp;Matthew J. Graham,&nbsp;Perla Y. Sauceda-Oloño,&nbsp;Andrew G. Tennyson,&nbsp;Ashlyn D. Smith,&nbsp;Rhett C. Smith","doi":"10.1007/s10924-025-03507-6","DOIUrl":"10.1007/s10924-025-03507-6","url":null,"abstract":"<div><p>Herein high-strength composites are prepared from elemental sulfur, sunflower oil, and wastewater sludge. Fats extracted from dissolved air flotation (DAF) solids were reacted with elemental sulfur to yield composite <b>DAFS</b> (10 wt% DAF fats and 90 wt% sulfur). Additional composites were prepared from DAF fat, sunflower oil and sulfur to give <b>SunDAF</b>_<b>x</b> (<i>x</i> = wt% sulfur, varied from 85–90%). The composites were characterized by spectroscopic, thermal, and mechanical methods. FT-IR spectra revealed a notable peak at 798 cm^–1 indicating a C–S stretch in <b>DAFS</b>, <b>SunDAF</b>_<b>90</b>, and <b>SunDAF</b>_<b>85</b> indicating successful crosslinking of polymeric sulfur with olefin units. SEM/EDX analysis revealed homogenous distribution of carbon, oxygen, and sulfur in <b>SunDAF</b>_<b>90</b> and <b>SunDAF</b>_<b>85</b>. The percent crystallinity exhibited by <b>DAFS</b> (37%), <b>SunDAF</b>_<b>90</b> (39%), and <b>SunDAF</b>_<b>85</b> (45%) was observed to be slightly lower than that of previous composites prepared from elemental sulfur and fats and oils. <b>DAFS</b> and <b>SunDAF</b>_<b>x</b> displayed compressive strengths (26.4–38.7 MPa) of up to 227% above that required (17 MPa) of ordinary Portland cement for residential building foundations. The composite decomposition temperatures ranged from 211 to 219 °C, with glass transition temperatures of − 37 °C to − 39 °C. These composites thus provide a potential route to reclaim wastewater organics for use in value-added structural materials having mechanical properties competitive with those of commercial products.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 4","pages":"1972 - 1983"},"PeriodicalIF":4.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-025-03507-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Electrospun Hydrophobically Modified Polyacrylic acid Hydrogel Nanofibers and their Application for Removal of Ciprofloxacin","authors":"Gülmire İlyasoğlu,&nbsp;Turdimuhammad Abdullah,&nbsp;Oguz Okay,&nbsp;İsmail Koyuncu","doi":"10.1007/s10924-025-03504-9","DOIUrl":"10.1007/s10924-025-03504-9","url":null,"abstract":"<div><p>The global water scarcity crisis has been exacerbated by the increasing demand for clean water and water pollution caused by the persistent release of pharmaceuticals such as ciprofloxasin, into water systems. The biodegradation and adsorption potential of CIP is crucial for its elimination in wastewater treatment systems. However conventional methods in wastewater treatment plant (WWTP) often struggle to efficiently eliminate of CIP from water due to its chemically stability and nonbiodegradability. Many researchers observed that CIP was not biodegraded even after 48 days in municipal WWTP, therefor no CIP removal occurred. The objective of this study was to investigate adsorption potential of CIP using a designed electrospun nanofiber. Within the scope of this purpose, we prepared electrospun acrylic acid (AAc)-based hydrogels modified with n-hexadecyl acrylate (C16A) for the first time and evaluated their efficacy in removing CIP from water. Our results show that the desired fiber size and surface smoothness can be obtained in the electrospun hydrogel containing 35 mol% of C16A. As a result, the AAc-based hydrogel nanofiber containing 35 mol% C16A exhibited superior adsorption properties. The adsorption efficiency of the hydrogel for CIP removal from aqueous medium was as high as 98% under equilibrium conditions. The adsorption process was found to follow the pseudo-second-order model, which suggests chemisorption as the dominant mechanism. Isothermal analysis showed that the adsorption fit well with the Langmuir model, suggesting single layer adsorption on a uniform surface. These results highlight the potential of AAc-based hydrogels for the sustainable removal of pharmaceuticals from wastewater, addressing a critical need in environmental contaminant management.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 4","pages":"1705 - 1721"},"PeriodicalIF":4.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-025-03504-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biological Production and Structural Characterization of PHB from Commercial Sugarcane Molasses","authors":"Débora J. N. de Melo,&nbsp;Lucineide B. da Silva,&nbsp;Sharline F. M. Santos","doi":"10.1007/s10924-025-03519-2","DOIUrl":"10.1007/s10924-025-03519-2","url":null,"abstract":"<div><p>World population growth associated with unbridled consumption have led to notable increases in the use of petroleum-based plastics. Biodegradable polymers produced from sustainable and low-cost raw materials have been emerging as a key solution. The objective of this work was to obtain a polymer of microbial origin from an alternative and renewable source. Bacterial Polyhydroxybutyrate (PHB-B) was produced by submerged culture of <i>Cupriavidus necator</i> using commercial sugarcane molasses (CSM) as a renewable substrate. A 2² factorial experimental design with three central point replications was conducted to identify the most favorable culture conditions. The 15 g.L⁻¹ concentration of reducing sugar (RS) obtained from the CSM was effective as a carbon source, yielding (under stirring at 180 rpm and 30 °C) a maximum production of 35.70% PHB-B, while presenting the same functional groups and crystal structure as commercial grade Polyhydroxybutyrate (PHB-C). The intensities obtained for the 2933 and 2975 cm⁻¹ bands, suggested that PHB-C presents higher crystallinity than PHB-B. ¹H and ¹³C NMR confirmed the identity of the bacterial biopolymer as Polyhydroxybutyrate. The diffraction peaks were less intense for PHB-B, and the peaks at (021) and (101) coalesced into a single peak at (111). The peak shapes indicated that PHB-B presents smaller and/or less perfect crystals than PHB-C. Considering the observed structural differences, the rigidity and flexibility of the biopolymers may differ. Bacterial PHB was produced using a low-pollution route. This resulted in a product which potentially expands the range of environmentally friendly PHB applications.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 4","pages":"2072 - 2090"},"PeriodicalIF":4.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the Effectiveness of Commercial Enzymes for Polyurethane Biodegradation","authors":"Slavica Porobic Katnic,&nbsp;Ram K. Gupta","doi":"10.1007/s10924-025-03502-x","DOIUrl":"10.1007/s10924-025-03502-x","url":null,"abstract":"<div><p>Polyurethanes (PUs) are widely used in various industries, but their durability raises significant disposal and environmental concerns. Enzymatic degradation offers a sustainable approach to address these challenges by providing a pathway for PU waste management. This study investigates the enzymatic degradation pathways of PU structures of varying complexity using lipase, protease, peroxidase, and combinations of these enzymes. The focus is on elucidating the mechanisms of degradation and structural changes through structure characterization and thermal analysis techniques. Complementing the experimental analyses, a comprehensive computational study evaluates the interactions between the enzyme and the PU structures. The computational results are then compared with the experimental findings, providing a thorough understanding of these interactions. The findings underscore the potential of enzymatic degradation of PU and the effectiveness of enzyme mixtures, especially the combination of lipase and peroxidase, as well as the synergistic action of all three enzymes. Peroxidase emerges as a highly efficient catalyst for PU degradation, complementing the esterase and amidase enzymes previously studied in this context. The key amino acids that participate in the binding of the enzymes to PUs are also highlighted. This research underscores the promise of enzymatic approaches for environmentally friendly PU recycling.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 4","pages":"1689 - 1704"},"PeriodicalIF":4.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Polyelectrolyte Properties of Fucoidans on Antimicrobial Activity","authors":"Olga Brovko,&nbsp;Irina Palamarchuk,&nbsp;Natalia Gorshkova,&nbsp;Dmitriy Chukhchin,&nbsp;Irina Eliseeva","doi":"10.1007/s10924-025-03506-7","DOIUrl":"10.1007/s10924-025-03506-7","url":null,"abstract":"<div><p>Over the years, brown algae have been highlighted as valuable natural sources of bioactive polysaccharides. They are known to consist of a number of bioactive polysaccharides, fucoidan being the principal polysaccharide. Fucoidans, a sulphated polysaccharide composed of a fucopyranose backbone and several monosaccharaides have been reported to possess numerous biological activities such as anticancer, antioxidant, antiviral, antithrombotic, and anti-inflammatory properties, thus may confer health benefits to humans. However, the main mechanisms bridging the structural complexity of fucoidans and their biological activity are mostly unexplored. This study aimed to compare the structural features and the antimicrobial properties of the fucoidan extracts isolated from the two brown macroalgae, <i>Fucus vesiculosus</i> and <i>Saccharina latissima</i>, sampled in the littoral zone of the Barents Sea. The physicochemical properties of fucoidans and their polyelectrolyte properties were investigated. The antibacterial activity of fucoidans was evaluated using the disc diffusion method against <i>Bacillus subtilis</i> (gram-positive bacteria), <i>Pseudomonas aeruginosa</i>, and <i>Proteus mirabilis</i> (gram-negative bacteria). It was shown that fucoidans inhibited the growth of both gram-positive and gram-negative microorganisms. At the concentration of 0.25–0.5%, the highest clear inhibition zones were observed for all the studied bacteria. The high antibacterial activity of fucoidans was due to the availability of functional groups and the particle sizes of fucoidan molecules that affect the cell membranes of the bacterial microflora. On the basis of obtaining results, fucoidans were suggested as potential natural and green bactericidal agents to be used by the pharmaceutical, medicine, and food industries.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 5","pages":"2138 - 2148"},"PeriodicalIF":4.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143809212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Eco-friendly Approach for the Separation and Reusage of Pre-consumer Polycotton Textile Waste","authors":"Fábio Pedroso de Lima,&nbsp;Cátia Alves,&nbsp;Rita Gomes-Dias,&nbsp;Marta Fernandes,&nbsp;Bárbara Vieira,&nbsp;Rui Rodrigues,&nbsp;Jorge Padrão,&nbsp;Andrea Zille","doi":"10.1007/s10924-025-03500-z","DOIUrl":"10.1007/s10924-025-03500-z","url":null,"abstract":"<div><p>One of the most challenging features of textile recycling is the widespread use of mixed fibre blends, which hardens the task of effective separation. A mixture of aqueous sodium hydroxide and a cosolvent was applied to a polycotton pre-consumer fabric to promote the chemical separation of polyester (PES) and cotton (CO). The feasibility of reusing the hydrolytic solutions was tested, where dimethyl sulfoxide (DMSO) and 2-propanol allowed the reusage of the hydrolytic solution for up to 3 consecutive cycles when applied to pristine material. The recovery of pure terephthalic acid (TPA), after treatment at 50 °C followed by vacuum filtration, achieved yields ranging from 65 to 69%. No further purification was required in 75% of the tested conditions. Through this environmentally sustainable procedure, a method was proposed that could facilitate the development of a scalable process for the TPA recovery from polycotton textiles. This approach aims to reduce both textile waste production and the need for the <i>de novo</i> synthesis of TPA.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 4","pages":"1847 - 1863"},"PeriodicalIF":4.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-025-03500-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Polyaminophenol/Glycerol–Silver Nanohybrids: Synthesis, Characterization, and Antimicrobial Activity","authors":"Ghadah M. Al-Senani,&nbsp;Amal Abdelfatah,&nbsp;Omayma F. Abdel-Gawad,&nbsp;Mashael N. Alshabanat,&nbsp;Mohamed Shaban,&nbsp;Azza Al-Ghamdi,&nbsp;Fatma Mohamed","doi":"10.1007/s10924-025-03498-4","DOIUrl":"10.1007/s10924-025-03498-4","url":null,"abstract":"","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 4","pages":"2123 - 2123"},"PeriodicalIF":4.7,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design Optimization and Rheological Property of Recyclable Epoxy Asphalt","authors":"Wenyi Zhou,&nbsp;Junyan Yi,&nbsp;Laurent Brochard,&nbsp;Zhongshi Pei,&nbsp;Sainan Xie,&nbsp;Decheng Feng","doi":"10.1007/s10924-025-03499-3","DOIUrl":"10.1007/s10924-025-03499-3","url":null,"abstract":"<div><p>Epoxy asphalt serves as a vital material in infrastructure construction; however, its inefficient regeneration process hampers broader adoption. To overcome this challenge, the concept of recyclable epoxy asphalt, harnessing the reversibility of dynamic covalent bonds, has been introduced. In prior research, we successfully developed and validated recyclable epoxy asphalt incorporating Diels–Alder reaction bonds. This study focuses on enhancing performance through design optimization and rheological property assessment of recyclable epoxy asphalt. By employing response surface methodology, 13 distinct compositions varying two parameters and evaluating three mechanical properties were devised to determine the optimal material formulation for recyclable epoxy asphalt. Subsequently, the recyclable epoxy asphalt underwent controlled aging and regeneration processes. Finally, the study evaluated the chemical composition and rheological properties of recyclable epoxy asphalt before and after regeneration. The optimization procedure identified the ideal composition of recyclable epoxy asphalt as 54% asphalt, 15% epoxy monomer, and 31% curing agent. The durability of the Diels–Alder reaction bonds’ reversibility under prolonged use is pivotal to the regeneration process. Rheological analysis suggests that moderate use enhances the performance of recyclable epoxy asphalt, with partial recovery achievable through the regeneration process. The preparation-aging-regeneration cycle underscores the practicality of recyclable epoxy asphalt, offering substantial environmental benefits and promising future applications.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1651 - 1665"},"PeriodicalIF":4.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced Hydrogel Dressing with Zinc Oxide-Copper Oxide Nanocomposite for Effective Wound Management: Mechanochemistry, Antibacterial Efficacy, Cytocompatibility and Wound Healing Potentials","authors":"Nasrin K. Ramtan Gadaime,&nbsp;Rabiatul Basria S. M. N. Mydin,&nbsp;G. Ambarasan Govindasamy,&nbsp;Yazmin Bustami,&nbsp;Srimala Sreekantan","doi":"10.1007/s10924-024-03468-2","DOIUrl":"10.1007/s10924-024-03468-2","url":null,"abstract":"<div><p>Managing open wounds is difficult because of the risk of bacterial infections and moisture loss, which can delay healing. Advanced wound care solutions are essential for healing. Hydrogel bandages provide a promising option because of the unique features of hydrogel such as high porosity and absorbency from its hydrophilic polymer composition. In addition, advanced hydrogel dressings infused with nanotechnology, especially zinc oxide–copper oxide (ZnO–CuO) nanocomposites, remarkably improve the effectiveness of wound care strategies. In the current study, the mechanochemistry, antibacterial efficacy, cytocompatibility and wound healing potential of ZnO–CuO nanocomposite-embedded polyethylene glycol hydrogel (CPZCH) were investigated. Antibacterial profiles were examined by disc diffusion, time-kill tests, and bacterial cell adherence against <i>S. aureus</i>, <i>MRSA</i>, <i>P. aeruginosa</i> and <i>E. coli</i>. Cytocompatibility and wound healing profiles were studied using the fibroblast cells. CPZCH exhibited favourable swelling‐shrinkable behaviours with a swelling, porosity and degradation ratio of approximately 1920.45%, 142.86% and 60.27%, respectively. These characteristics are crucial for maintaining a moist wound environment, facilitating nutrient distribution and making eco-friendly dressings. CPZCH exhibited antibacterial potential within 24h, which is crucial for managing infection and protecting wounds from bacterial infections. CPZCH exhibited high cytocompatibility (~ 110.177%) and remarkable <i>in vitro</i>wound healing properties within 48h, which are crucial for maintaining cell integrity from toxicity and rapid wound closure. Therefore, CPZCH showed great application potential in wound dressing with favourable swelling‐shrinkable behaviours, antibacterial efficacy, cytocompatibility and wound healing properties. Further studies especially involving hemocompatibility and molecular interaction are necessary to reach comprehensive knowledge about the behaviour of the dressing in wound management.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1601 - 1614"},"PeriodicalIF":4.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioplastic (Polyhydroxybutyrate) Synthesis Using Orange Wastes by the Marine Bacterium Bacillus sp. Caspian04","authors":"Salman Ahmady-Asbchin,&nbsp;Saba Amiri Kojuri","doi":"10.1007/s10924-025-03488-6","DOIUrl":"10.1007/s10924-025-03488-6","url":null,"abstract":"<div><p>The production and development of bioplastics are necessary to solve the crisis originating from the accumulation of non-biodegradable plastics in the environment. This study aimed to synthesize polyhydroxybutyrate (PHB) using orange wastes by the bacterium separated from the Caspian Sea. Seven PHB synthesizing bacterial isolate were isolated from Caspian Sea water. The initial screening for PHB synthesis was performed with a dye-based method. The most powerful marine bacterium with the synthesis of 1.73 g/L PHB was identified via 16S rRNA gene sequencing as <i>Bacillus</i> sp. Caspian04 and its nucleotide sequence was preserved with the accession number OR999904.1 in GeneBank. PHB synthesis increased in the presence of ammonium chloride, 4% orange wastes extract, and 3% NaCl, at temperature of 35 °C and pH 8.0. Using the orange wastes extract (4% w/v) led to the synthesis of 5.22 g/L PHB, which can help reduce the cost of PHB synthesis. FTIR, ¹H NMR, ¹³C NMR, XRD, and TGA were used to evaluate extracted PHB’s characterization. The present study is the first attempt to bioplastic synthesis by bacteria isolated from the Caspian Sea. Furthermore, with the biotechnological production of PHB from orange wastes by <i>Bacillus</i> sp. Caspian04, the way will be paved for the development of management strategy of solid wastes and highlights the role of marine bacteria in the production of polymers with commercial value.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1636 - 1650"},"PeriodicalIF":4.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}