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Journal of Renewable Materials 2021年第2期9卷 325-335页

作者： Ilyas Renreng Bakri Bakri Sri Chandrabakty Naharuddin Mechanical Engineering Department Hasanuddin UniversityGowa92171Indonesia Mechanical Engineering Department Tadulako UniversityPalu94118Indonesia

In this study,the influence of sodium hydroxide(NaOH)treatment and microwave treatment of coir fibers on the mechanical and physical properties of pressed coir fiber/epoxy composite were *** composite was fabricated with a hand lay-up method with compression *** composite fabrication,pressed coir fiber was treated with NaOH and microwave *** testing(tensile,flexural,and impact testing)of the composite was ***,water absorption and thickness swelling testing are also *** fractured composite surface morphology after the tensile test was analyzed by scanning electronic microscopy(SEM).The results revealed that tensile,flexural,and impact strengths of composite tend to increase after NaOH treatment of coir fiber followed by microwave treatment for 10 and 20 minutes of exposure time compared to untreated ***,for NaOH treatment,the tensile,flexural and,impact strengths of composite *** reducing of the tensile strength of the composite is due to the agglomeration fiber occurred,which is displayed in the SEM ***,microwave treatment of fiber for 10 minutes and NaOH treatment followed by microwave treatment for 20 minutes of exposure time decreases the water absorption and thickness swelling of the composite.

关键词： Coir fiber epoxy NaOH treatment microwave treatment composite

Constructing mild expanded graphite microspheres by pressurized oxidation combined microwave treatment for enhanced lithium storage

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Rare Metals 2021年第4期40卷 837-847页

作者： Can-Liang Ma Zhen-Hui Hu Ning-Jing Song Yun Zhao Yan-Zhen Liu Hui-Qi Wang Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province Institute of Molecular ScienceShanxi UniversityTaiyuan 030006China College of Chemistry and Chemical Engineering Jinzhong UniversityJinzhong 030619China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China School of Energy and Power Engineering School of Material Science and EngineeringNorth University of ChinaTaiyuan 030051China

The modified graphite anode materials have some prominent advantages over other anode materials in the industrial applications.A novel simple and gentle method is proposed to synthesize the mild expanded graphite microspheres(MEGMs) from flake graphite spheres through a combined modified pressurized oxidation combined with the microwave *** microstructural results demonstrate that moderately expanded MEGMs with an expansion volume between 4 and 10 ml·g^(-1)exhibit a highly microporous structure with an enlarged interlayer spacing,a decreased microcrystalline size,as well as an increased number of functional groups on the surface,resulting in the increased storage sites and spaces for lithium ions and the enhanced diffusion rate of lithium *** used as the anode material for lithium-ion batteries,the MEGM-T75t30 obtained by oxidation treatment at 75℃ for 30 min followed by microwave irradiation for expansion displays a high reversible capacity of 446.7 mAh·g^(-1) at 100 mA·g^(-1) after 100 cycles and excellent rate performance(330 and 116 mAh·g^(-1) at 800 and 3200 mA·g^(-1),respectively).Therefore,the MEGMs prepared by this convenient and mild method show excellent electrochemical properties and good application potential.

关键词： Pressurized oxidation microwave treatment Mild expanded graphite microspheres Microstructure Graphitic anode material Lithium-ion battery

Numerical and experimental analyses of rock failure mechanisms due to microwave treatment

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第10期15卷 2483-2495页

作者： Haitham M.Ahmed Adel Ahmadihosseini Ferri Hassani Mohammed A.Hefni HussinA.M.Ahmed Hussein A.Saleem Essam B.Moustafa Agus P.Sasmito Mining Engineering Department King Abdulaziz UniversityJeddah21589Saudi Arabia Department of Mining and Materials Engineering McGill UniversityMontrealQCH3A0E8Canada Mechanical Engineering Department King Abdulaziz UniversityJeddah21589Saudi Arabia

Despite the extensive studies conducted on the effectiveness of microwave treatment as a novel rock preconditioning method,there is yet to find reliable data on the rock failure mechanisms due to microwave *** addition,there is no significant discussion on the energy efficiency of the method as one of the important factors among the mining and geotechnical engineers in the *** study presents a novel experimental method to evaluate two main rock failure mechanisms due to microwave treatment without applying any mechanical forces,*** and concentrated *** result shows that the existence of a small and concentrated fraction of a strong microwave absorbing mineral will change the failure mechanism from the distributed heating to the concentrated heating,which can increase the weakening over microwave efficiency(WOME)by more than 10 *** observation is further investigated using the developed coupled numerical *** is shown that at the same input energy,the existence of microwave absorbing minerals can cause major heat concentration inside the rock and increase the maximum temperature by up to three times.

关键词： microwave treatment Numerical modeling Failure mechanism Energy efficiency Rock pre-conditioning

Improved Visible-light Photocatalytic Properties of ZnFe2O4 Synthesized via Sol-gel Method Combined with a microwave treatment

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Chemical Research in Chinese Universities 2015年第3期31卷 439-442页

作者： FENG Jing WANG Yuting ZOU Linyi LI Bowen HE Xiaofeng Lü Shengna CHEN Tingting Key Laboratory of Superlight Materials & Surface Technology Ministry of Education Harbin Engineering University Harbin 150001 P. R. China

ZnFe2O4（ZFO） was synthesized via a sol-gel method firstly, then the ZFO was irradiated with microwave treatment to obtain M-ZFO using NH4C1 as dispersant for 10 min to improve the photocatalytic activity. Large par- tides of ZFO were broken into small and uniform particles by the gases of hydrogen chlorine and ammonia during the decomposition of NH4Cl. Compared to ZnFe2O4 without microwave treatment（ZFO）, M-ZFO exhibits smaller particle size, higher surface area and larger saturation magnetization. More importantly, the photocatalytic activity of M-ZFO for methylene blue was increased by 25% compared with that of ZFO.

关键词： Photocatalyst microwave treatment ZnFe2O4

Changes in physicochemical characteristics of wheat flour and quality of fresh wet noodles induced by microwave treatment

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Grain & Oil Science and Technology 2024年第3期7卷 177-185页

作者： Jian Zhang Xuejie Li Xiujuan Ren Yanxia An Xiaoyan Song Yang Zhao Yaqing Wen Weifeng Zhang College of Food Science and Technology Henan Agricultural UniversityZhengzhou 450000Henan ProvinceChina School of Food Science and Engineering Zhengzhou University of Science and TechnologyZhengzhou 450064Henan ProvinceChina

Fresh wet noodles(FWN) are popular staple foods due to its unique chewy texture and favorable taste. However,the development of FWN is limited by its short shelf life and high browning rate. It has been found that the quantity of original microorganisms in wheat flour produced by traditional method is relatively high, which is detrimental to the processing quality and storage stability of FWN. Consequently, it becomes imperative to decrease microorganisms in wheat flour. microwave treatment has been regarded as a promising method in the food industry due to its potential in inhibiting microbial growth and inactivating enzymes without causing adverse effect on the food quality. This study aims to investigate the effects of microwave treatment of wheat kernels under different powers(1, 2, 3, 4, 5 kW) on the physicochemical properties of wheat flour and the quality of FWN. The results revealed that microwave treatment had a significant effect on microbial inhibition and enzyme inactivation, wherein the total plate count(TPC) and yeast and mold counts(YMC) decreased by 0.87 lg(CFU/g) and 1.13 lg(CFU/g) respectively, and PPO activity decreased from 11.40 U to 6.31 U. The dough quality properties, such as stability, extensibility, and starch viscosity, improved significantly under different microwave conditions. Confocal laser scanning microscopy(CLSM) images indicated that starch and proteins aggregated gradually in treated flour, altering rheological properties of dough. From the results of scanning electron microscopy(SEM), microwave treatment led to the appearance of disrupted structure in the gluten proteins, but the secondary structure of proteins altered slightly. Rheological properties of dough confirmed that the microwave treatment greatly affected processing characteristics of wheat flour products, with significant advantageous consequences on product quality, especially for textural properties of FWN. Furthermore, FWN darkening could be inhibited noticeably aft

关键词： microwave treatment Sterilization Confocal laser scanning microscopy Rheological properties Protein structures

Effect of acupoint application combined with microwave treatment on the intestine barrier functional disturbance of moderately severe acute pancreatitis

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TMR Integrative Nursing 2019年第3期3卷 93-99页

作者： Miao Zhang Jun-Chen Fan Hui-Min Zhang Qian-Qian Guo Peng-Yang Li Hua-Lin Men Yu-Ling Wang Huzhou Center Hospital Huzhou Zhejiang China Tianjin University of Traditional Chinese Medicine Tianjin China Tianjin Hospital of ITCWM Nankai Hospital Tianjin China

Objective: To explore and analyze the effect of acupoint application combined with microwave treatment on the intestinal barrier dysfunction with moderately severe acute pancreatitis. Methods: A convenient sample of 90 moderately severe acute pancreatitis was selected from March 2017 to December 2017 in the comprehensive hospital with third grade in Tianjin. The patients were divided into group A (acupoint application combined with microwave treatment), group B (acupoint application) and group C (routine nursing). Thirty patients were included in each group. This study need to get the informed consent of the patients. Acupoint application combined with microwave treatment was used, basing on routine nursing measures in group A. Acupoint application was used by the same way and the same traditional Chinese medicine ,basing on routine nursing measures in group B. Routine nursing used in group C. C-reactive protein and the score of intestinal function were measured on 3 th day, 7 th day and 10 th day, after intervention. To record the effective ratio of the treatment after 10 days of intervention. Results: There are significant statistical difference among the three group after intervention (P microwave treatment are able to decrease the time about the recovery of intestinal barrier dysfunction in moderately severe acute pancreatitis and to alleviate the suffering of patients.

关键词： Acupoint application microwave treatment Moderately severe acute pancreatitis Intestinal barrier dysfunction

Temperature characteristics of wood during microwave treatments

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Journal of Forestry Research 2018年第6期29卷 1815-1820页

作者： Hui Xiao Lanying Lin Feng Fu Research Institute of Wood Industry Chinese Academy of Forestry Research Institute of Forestry New Technology Chinese Academy of Forestry

In order to investigate the temperature characteristics of wood during microwave(MW) treatments,optical fiber sensors were used to measure wood(Pinus sylvestris L. var. mongolica Litv.) temperatures. The results show that the development of internal temperatures in wood basically includes two patterns during the process of MW treatment. The first may be divided into three phases: warming, constant temperature, and a sharply rising phase. The second pattern may be divided into two phases: warming, and constant temperature. The maximum temperature(MT) and rate of temperature increase(RTI)rose as the microwave power increased. The initial wood moisture content decreased while the period of constant temperature fell. Temperatures varied in different positions in the wood. The order of MT and RTI levels were the upper surface, center, bottom surface and the end *** the direction of wood thickness, the closer the monitoring point was to the generator, the faster the temperature increased. The MT and RTI of the end point was a minimum value because of the rapid removal of steam.

关键词： microwave treatment Pinus sylvestris var. mongolica Initial moisture content microwave power Temperature characteristics

A theragenerative bio-nanocomposite consisting of black phosphorus quantum dots for bone cancer therapy and regeneration

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Bioactive Materials 2024年第5期35卷 99-121页

作者： Ashkan Bigham Ines Fasolino Silvia Borsacchi Carmen Valente Lucia Calucci Gabriele Turacchio Marianna Pannico Manuel Serrano-Ruiz Luigi Ambrosio Maria Grazia Raucci Institute of Polymers Composites and BiomaterialsNational Research Council of Italy(IPCB-CNR)Viale John Fitzgerald Kennedy 54Mostra d’Oltremare Padiglione 2080125NaplesItaly Department of Chemical Materials and Production EngineeringUniversity of Naples Federico IIPiazzale V.Tecchio 8080125NaplesItaly Institute for the Chemistry of OrganoMetallic Compounds-ICCOM Italian National Research Council-CNRvia G.Moruzzi 156124Pis1Italy Center for Instrument Sharing of the University of Pisa(CISUP) 56126Pis1Italy Institute of Experimental Endocrinology and Oncology“G.Salvatore”(IEOS) National Research Council(CNR)Via Pietro Castellino 11180131NapoliItaly Institute of Polymers Compositesand BiomaterialsNational Research Council of Italy(IPCB-CNR)PozzuoliItaly Institute for the Chemistry of OrganoMetallic Compounds-ICCOM National Research Council-CNRSesto FiorentinoItaly Institute of Translational Pharmacology(IFT) National Research Council(CNR)Via Carducci 3267100L’Aquila(Italy).

Recently,the term theragenerative has been proposed for biomaterials capable of inducing therapeutic approaches followed by repairing/regenerating the tissue/*** study is focused on the design of a new theragenerative nanocomposite composed of an amphiphilic non-ionic surfactant(Pluronic F127),bioactive glass(BG),and black phosphorus(BP).The nanocomposite was prepared through a two-step synthetic strategy,including a microwave treatment that turned BP nanosheets(BPNS)into quantum dots(BPQDs)with 5±2 nm dimensions in *** effects of surfactant and microwave treatment were assessed in vitro:the surfactant distributes the ions homogenously throughout the composite and the microwave treatment chemically stabilizes the *** presence of BP enhanced bioactivity and promoted calcium phosphate formation in simulated body *** inherent anticancer activity of BP-containing nanocomposites was tested against osteosarcoma cells in vitro,finding that 150μg mL^(-1)was the lowest concentration which prevented the proliferation of SAOS-2 cells,while the counterpart without BP did not affect the cell growth ***,the apoptosis pathways were evaluated and a mechanism of action was *** irradiation was applied to induce further proliferation suppression on SAOS-2 cells through *** inhibitory effects of bare BP nanomaterials and nanocomposites on the migration and invasion of bone cancer,breast cancer,and prostate cancer cells were assessed in vitro to determine the anticancer potential of nanomaterials against primary and secondary bone *** regenerative behavior of the nanocomposites was tested with healthy osteoblasts and human mesenchymal stem cells;the BPQDs-incorporated nanocomposite significantly promoted the proliferation of osteoblast cells and induced the osteogenic differentiation of stem *** study introduces a new multifunctional theragenerative platform with promising potential for simultaneous bone cancer t

关键词： Bioactive glass Black phosphorus microwave treatment Bone cancer therapy Tissue regeneration

Effect of joints on microwave fracturing of the Bukit Timah granite using an open-ended antenna

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Deep Underground Science and Engineering 2022年第2期1卷 138-147页

作者： Zhongjun Ma Yanlong Zheng Lei He Jianchun Li School of Civil Engineering Southeast UniversityNanjingChina

microwave fracturing of rocks before mechanical breakage could improve the performance of mechanical excavators and reduce environmental *** research focused on the microwave fracturing of intact rock *** using an open-ended antenna,this paper investigates the effect of pre-existing joints on the microwave fracturing of the Singapore Bukit Timah granite *** results show that the specimens are weakened in the manners of cracking,spalling,melting,or a combination of *** crack number and the total crack length produced by microwave treatment of jointed rock blocks are slightly smaller than those in the intact rock *** interaction between joints and microwave-induced cracks can be summarized into the following four patterns:(1)microwave-induced cracks become arrested so that the crack propagation is terminated;(2)microwave-induced cracks penetrate the joints and continue to propagate;(3)microwave-induced cracks become deflected along the joints;and(4)microwave-induced cracks propagate forward following the *** smaller the approach angle between the microwave-induced crack and the preexisting joint is,the more microwave-induced cracks tend to be arrested at the *** the approach angle between the microwave-induced crack and the joint can increase the chance of microwave-induced crack penetrating the *** results also show that the smaller the distance is between the microwave radiation point and the joint,the easier it is for microwave-induced cracks to penetrate the joints;otherwise,the microwave-induced crack is more likely to be arrested at the pre-existing joint.

关键词： Bukit Timah granite crack propagation joints microwave treatment open-ended antenna

Machining of Single‑Crystal Sapphire with Polysaccharide‑Bonded Abrasive Tool

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Transactions of Nanjing University of Aeronautics and Astronautics 2020年第3期37卷 360-369页

作者： WU Zhe ZHU Yanfei CHEN Junpeng ZHU Zichao LIU Zhifeng YUAN Julong YAO Weifeng School of Mechanical Engineering Hefei University of TechnologyHefei 230009P.R.China Ultra⁃precision Machining Center Zhejiang University of TechnologyHangzhou 310014P.R.China College of Mechanical and Electrical Engineering Shaoxing UniversityShaoxing 312000P.R.China

A novel polysaccharide-bonded abrasive tool is proposed for the green machining of single-crystal *** prescription and manufacturing process of the proposed tool is designed,and the gelation property of polysaccharide by microwave treatment is *** tool samples are fabricated,and a machining experiment on a single-crystal sapphire is *** is found that the crystallinity of polysaccharide gel decreases as the proportion of cross-linked polysaccharide *** tool samples with cross-linked polysaccharide present higher surface *** the new abrasive tool,the surface quality of sapphire wafer can be significantly *** new tool with an abrasive to binder ratio of 2∶1 attains a material removal rate of 0.68μm/*** is found that increasing the abrasive to binder ratio leads to better self-dressing performance but worse material removal ability and greater loss of abrasive tool *** validity of polysaccharide as an abrasive tool binder is preliminarily verified.

关键词： polysaccharide binder microwave treatment single-crystal sapphire green manufacturing