The Experts below are selected from a list of 60 Experts worldwide ranked by ideXlab platform

Shahiron Shahidan - One of the best experts on this subject based on the ideXlab platform.

  • Concrete Incorporated with Optimum Percentages of Recycled Polyethylene Terephthalate (PET) Bottle Fiber
    International Journal of Integrated Engineering, 2018
    Co-Authors: Shahiron Shahidan
    Abstract:

    Plastic solid waste generation increases every year with the current consumption habit prevalent in the society nowadays. The improper disposal of plastic has been a major concern to the environment as it is not easily degradable. The issue of environmental pollution caused by Polyethylene Terephthalates (PET) has been extensively discussed and the best solution proposed is recycling. Therefore, one of the potential means to the problem is to recycle Polyethylene terephthalate (PET) in the construction industry as fiber concrete (FC). FC is a composite material resulting from the addition of fibers to ordinary concrete. The objective of this research is to determine the mechanical properties and the optimum percentages of recycled Polyethylene terephthalate (PET) fibers in ordinary concrete. In this study, straight and irregular recycled Polyethylene terephthalate (PET) fibers were used. The fibers were simply cut from Polyethylene terephthalate (PET) plastic bottles. The length and width of recycled Polyethylene terephthalate (PET) fiber were fixed at 50 mm and 5 mm respectively. The percentages of recycled PET fibers added in the concrete mix were 0.5%, 1%, 1.5% and 2.0% respectively according to the volume of concrete to continue research of Ochi et al. (2007). A water-cement ratio of 0.45 was accepted for all ranges. The tests that were conducted included the slump test, compressive strength test and splitting tensile strength test. The specimens were tested on day 7 and day 28 after the concrete was mixed. The results obtained from each test indicated that when the percentage of recycled Polyethylene terephthalate (PET) fiber used increases, the values obtained from the slump test and compressive strength test decreases while the value obtained from the splitting tensile test increases.

Kai Gao - One of the best experts on this subject based on the ideXlab platform.

  • the effect of 58s bioactive glass coating on Polyethylene Terephthalates in graft bone healing
    Journal of Bionic Engineering, 2012
    Co-Authors: Shiyi Chen, Jia Jiang, Kai Gao, Pengyun Zhang
    Abstract:

    In this study the effects of surface modification of Polyethylene Terephthalates (PET) fibers with 58S bioactive glasses on osteoblasts proliferation and osseointegration in the tibia-articular tendon-bone healing model were investigated. PET sheets were coated with 58S bioactive glass and uncoated PET sheets were used as a control. Scanning Electron Microscope (SEM) and X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fibers. MT3T3-E1 cells were cultured with the PET fibers and the MTT and ALP were tested at 1, 3, 5 days. Twenty-four skeletally mature male New Zealand white rabbits were randomly divided into two groups, the 58S-PET group and the PET group. Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model. Mechanical examinations and histological assays were taken to verify the coating effects in vivo. Results of both MTT and ALP tests show significant differences (P < 0.01) between the 58S-PET group and the PET group. At 6 weeks and 12 weeks, the max load-to-failure was significantly higher in the 58S-PET group. In the histological assays, distinct new bone formation was observed only in the 58S-PET group and stronger osseointegration was seen in the 58S-PET group than that in the control group. The 58S-coating on PET could enhance the proliferation and activity of the osteoblasts and therefore promote the new bone formation and tendon-bone healing.

  • effect of Polyethylene Terephthalates coated with bioactive glass on osteoblastic proliferation and cytoactivity in vitro
    Chinese journal of experimental surgery, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To search for a novel method to promote the compabibility of materials and bone.The anterior cruciate ligament (ACL) reconstruction using artificial ligament [Polyethylene Terephthalates (PET)],which has good biocompatibility and mechanical properties,is prevalent.However,the low tendon-to-bone healing rate due to the PET' s hydrophobicity limits the clinical application.Methods This study aimed to observe the effects of the coating bioactive glass (58S) synthetic anterior cruciate ligament (ACL) on osteoblastic proliferation and cytoactivity in vitro.By using coating technique,bioactive glass (58S) was coated on the Polyethylene Terephthalates (PET) fibers.The scanning electron micrographs showed that bioactive glass (58S) were spindle-shaped and well-orientated on the PET fibers.Then,MC3T3-E1 osteoblasts were seeded onto the PET or the coating PET.Results The number of osteoblasts was significantly increased in the coating PET (8.92 ± 0.17 ) as compared with the PET (6.25±0.27) by using automated cell counter at the 5th day (P ＜ 0.05 ).Alkaline phosphatase activity and methyl thiazol tetrazolium ( MTT) test also showed that the coating fibrous scaffold induced signifienat osteogenesis and cell proliferation as compared to PET without coating.Conclusion The coating bioactive glass (58S) provides an instructive microenvironment for osteoblast proliferation. Key words: Anterior cruciate ligament; Polyethylene Terephthalates; Artificial ligament; Bioactive glass

  • the effect of Polyethylene Terephthalates coated with 58s bioactive glass on graft bone healing
    Chinese Journal of Orthopaedics, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To observe the effect of Polyethylene Terephthalates (PET) coated with 58S bioactive glass on graft-bone healing.Methods The PET coated with 58S bioactive glass was used in experimental group,and uncoated PET was used as a control.The coating solution was made of 20％ bioactive glass powder and 80％ gelatin powder (by weight).In our vitro study,4×104/ml MT3T3-E1 cells were cultured in 24-well plates with the coated or uncoated PET,and the MTT and ALP were tested at 1,3,5 days to show the proliferation and the activity of the cells.The SEM and the X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fiber.In our vivo study,24 skeletally mature New Zealand white rabbits were randomly divided into two groups,the 58S-PET group and the PET group.Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model.Mechanical examination and histological assay were taken to verify the coating effect in vivo.Results The 58S-PET group showed significantly differences in both the MTT and ALP tests at each time point (3,5 days) compared with the PET group.In the animal experiments,the maximum load increased by time in both groups.At 6 weeks,the load-to-failure was significantly higher in the 58S-PET group [(61.70±6.95) N]than that of the PET group [(45.21±9.78) N].At 12 weeks,the load-to-failure was also significantly higher in the 58S-PET group [(89.25±9.50) N]than that of the PET group [(71.38±6.26) N].In the histological assay,it was found that there was new bone formation in the indistinct interface between the graft and the host bone in both groups at 6,12 weeks,and a stronger binding was seen in the 58S-PET group than in the PET group.Conclusion The 58S-PET could enhance the proliferation and activity of the osteoblast and therefore promote the new bone formation and subsequently leads to a positive effect on tendon-bone healing. Key words: Anterior cruciate ligament;  Polyethylene Terephthalates;  Biomechanics

Shiyi Chen - One of the best experts on this subject based on the ideXlab platform.

  • the effect of 58s bioactive glass coating on Polyethylene Terephthalates in graft bone healing
    Journal of Bionic Engineering, 2012
    Co-Authors: Shiyi Chen, Jia Jiang, Kai Gao, Pengyun Zhang
    Abstract:

    In this study the effects of surface modification of Polyethylene Terephthalates (PET) fibers with 58S bioactive glasses on osteoblasts proliferation and osseointegration in the tibia-articular tendon-bone healing model were investigated. PET sheets were coated with 58S bioactive glass and uncoated PET sheets were used as a control. Scanning Electron Microscope (SEM) and X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fibers. MT3T3-E1 cells were cultured with the PET fibers and the MTT and ALP were tested at 1, 3, 5 days. Twenty-four skeletally mature male New Zealand white rabbits were randomly divided into two groups, the 58S-PET group and the PET group. Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model. Mechanical examinations and histological assays were taken to verify the coating effects in vivo. Results of both MTT and ALP tests show significant differences (P < 0.01) between the 58S-PET group and the PET group. At 6 weeks and 12 weeks, the max load-to-failure was significantly higher in the 58S-PET group. In the histological assays, distinct new bone formation was observed only in the 58S-PET group and stronger osseointegration was seen in the 58S-PET group than that in the control group. The 58S-coating on PET could enhance the proliferation and activity of the osteoblasts and therefore promote the new bone formation and tendon-bone healing.

  • effect of Polyethylene Terephthalates coated with bioactive glass on osteoblastic proliferation and cytoactivity in vitro
    Chinese journal of experimental surgery, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To search for a novel method to promote the compabibility of materials and bone.The anterior cruciate ligament (ACL) reconstruction using artificial ligament [Polyethylene Terephthalates (PET)],which has good biocompatibility and mechanical properties,is prevalent.However,the low tendon-to-bone healing rate due to the PET' s hydrophobicity limits the clinical application.Methods This study aimed to observe the effects of the coating bioactive glass (58S) synthetic anterior cruciate ligament (ACL) on osteoblastic proliferation and cytoactivity in vitro.By using coating technique,bioactive glass (58S) was coated on the Polyethylene Terephthalates (PET) fibers.The scanning electron micrographs showed that bioactive glass (58S) were spindle-shaped and well-orientated on the PET fibers.Then,MC3T3-E1 osteoblasts were seeded onto the PET or the coating PET.Results The number of osteoblasts was significantly increased in the coating PET (8.92 ± 0.17 ) as compared with the PET (6.25±0.27) by using automated cell counter at the 5th day (P ＜ 0.05 ).Alkaline phosphatase activity and methyl thiazol tetrazolium ( MTT) test also showed that the coating fibrous scaffold induced signifienat osteogenesis and cell proliferation as compared to PET without coating.Conclusion The coating bioactive glass (58S) provides an instructive microenvironment for osteoblast proliferation. Key words: Anterior cruciate ligament; Polyethylene Terephthalates; Artificial ligament; Bioactive glass

  • the effect of Polyethylene Terephthalates coated with 58s bioactive glass on graft bone healing
    Chinese Journal of Orthopaedics, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To observe the effect of Polyethylene Terephthalates (PET) coated with 58S bioactive glass on graft-bone healing.Methods The PET coated with 58S bioactive glass was used in experimental group,and uncoated PET was used as a control.The coating solution was made of 20％ bioactive glass powder and 80％ gelatin powder (by weight).In our vitro study,4×104/ml MT3T3-E1 cells were cultured in 24-well plates with the coated or uncoated PET,and the MTT and ALP were tested at 1,3,5 days to show the proliferation and the activity of the cells.The SEM and the X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fiber.In our vivo study,24 skeletally mature New Zealand white rabbits were randomly divided into two groups,the 58S-PET group and the PET group.Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model.Mechanical examination and histological assay were taken to verify the coating effect in vivo.Results The 58S-PET group showed significantly differences in both the MTT and ALP tests at each time point (3,5 days) compared with the PET group.In the animal experiments,the maximum load increased by time in both groups.At 6 weeks,the load-to-failure was significantly higher in the 58S-PET group [(61.70±6.95) N]than that of the PET group [(45.21±9.78) N].At 12 weeks,the load-to-failure was also significantly higher in the 58S-PET group [(89.25±9.50) N]than that of the PET group [(71.38±6.26) N].In the histological assay,it was found that there was new bone formation in the indistinct interface between the graft and the host bone in both groups at 6,12 weeks,and a stronger binding was seen in the 58S-PET group than in the PET group.Conclusion The 58S-PET could enhance the proliferation and activity of the osteoblast and therefore promote the new bone formation and subsequently leads to a positive effect on tendon-bone healing. Key words: Anterior cruciate ligament;  Polyethylene Terephthalates;  Biomechanics

Jia Jiang - One of the best experts on this subject based on the ideXlab platform.

  • the effect of 58s bioactive glass coating on Polyethylene Terephthalates in graft bone healing
    Journal of Bionic Engineering, 2012
    Co-Authors: Shiyi Chen, Jia Jiang, Kai Gao, Pengyun Zhang
    Abstract:

    In this study the effects of surface modification of Polyethylene Terephthalates (PET) fibers with 58S bioactive glasses on osteoblasts proliferation and osseointegration in the tibia-articular tendon-bone healing model were investigated. PET sheets were coated with 58S bioactive glass and uncoated PET sheets were used as a control. Scanning Electron Microscope (SEM) and X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fibers. MT3T3-E1 cells were cultured with the PET fibers and the MTT and ALP were tested at 1, 3, 5 days. Twenty-four skeletally mature male New Zealand white rabbits were randomly divided into two groups, the 58S-PET group and the PET group. Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model. Mechanical examinations and histological assays were taken to verify the coating effects in vivo. Results of both MTT and ALP tests show significant differences (P < 0.01) between the 58S-PET group and the PET group. At 6 weeks and 12 weeks, the max load-to-failure was significantly higher in the 58S-PET group. In the histological assays, distinct new bone formation was observed only in the 58S-PET group and stronger osseointegration was seen in the 58S-PET group than that in the control group. The 58S-coating on PET could enhance the proliferation and activity of the osteoblasts and therefore promote the new bone formation and tendon-bone healing.

  • effect of Polyethylene Terephthalates coated with bioactive glass on osteoblastic proliferation and cytoactivity in vitro
    Chinese journal of experimental surgery, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To search for a novel method to promote the compabibility of materials and bone.The anterior cruciate ligament (ACL) reconstruction using artificial ligament [Polyethylene Terephthalates (PET)],which has good biocompatibility and mechanical properties,is prevalent.However,the low tendon-to-bone healing rate due to the PET' s hydrophobicity limits the clinical application.Methods This study aimed to observe the effects of the coating bioactive glass (58S) synthetic anterior cruciate ligament (ACL) on osteoblastic proliferation and cytoactivity in vitro.By using coating technique,bioactive glass (58S) was coated on the Polyethylene Terephthalates (PET) fibers.The scanning electron micrographs showed that bioactive glass (58S) were spindle-shaped and well-orientated on the PET fibers.Then,MC3T3-E1 osteoblasts were seeded onto the PET or the coating PET.Results The number of osteoblasts was significantly increased in the coating PET (8.92 ± 0.17 ) as compared with the PET (6.25±0.27) by using automated cell counter at the 5th day (P ＜ 0.05 ).Alkaline phosphatase activity and methyl thiazol tetrazolium ( MTT) test also showed that the coating fibrous scaffold induced signifienat osteogenesis and cell proliferation as compared to PET without coating.Conclusion The coating bioactive glass (58S) provides an instructive microenvironment for osteoblast proliferation. Key words: Anterior cruciate ligament; Polyethylene Terephthalates; Artificial ligament; Bioactive glass

  • the effect of Polyethylene Terephthalates coated with 58s bioactive glass on graft bone healing
    Chinese Journal of Orthopaedics, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To observe the effect of Polyethylene Terephthalates (PET) coated with 58S bioactive glass on graft-bone healing.Methods The PET coated with 58S bioactive glass was used in experimental group,and uncoated PET was used as a control.The coating solution was made of 20％ bioactive glass powder and 80％ gelatin powder (by weight).In our vitro study,4×104/ml MT3T3-E1 cells were cultured in 24-well plates with the coated or uncoated PET,and the MTT and ALP were tested at 1,3,5 days to show the proliferation and the activity of the cells.The SEM and the X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fiber.In our vivo study,24 skeletally mature New Zealand white rabbits were randomly divided into two groups,the 58S-PET group and the PET group.Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model.Mechanical examination and histological assay were taken to verify the coating effect in vivo.Results The 58S-PET group showed significantly differences in both the MTT and ALP tests at each time point (3,5 days) compared with the PET group.In the animal experiments,the maximum load increased by time in both groups.At 6 weeks,the load-to-failure was significantly higher in the 58S-PET group [(61.70±6.95) N]than that of the PET group [(45.21±9.78) N].At 12 weeks,the load-to-failure was also significantly higher in the 58S-PET group [(89.25±9.50) N]than that of the PET group [(71.38±6.26) N].In the histological assay,it was found that there was new bone formation in the indistinct interface between the graft and the host bone in both groups at 6,12 weeks,and a stronger binding was seen in the 58S-PET group than in the PET group.Conclusion The 58S-PET could enhance the proliferation and activity of the osteoblast and therefore promote the new bone formation and subsequently leads to a positive effect on tendon-bone healing. Key words: Anterior cruciate ligament;  Polyethylene Terephthalates;  Biomechanics

W U Yang - One of the best experts on this subject based on the ideXlab platform.

  • effect of Polyethylene Terephthalates coated with bioactive glass on osteoblastic proliferation and cytoactivity in vitro
    Chinese journal of experimental surgery, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To search for a novel method to promote the compabibility of materials and bone.The anterior cruciate ligament (ACL) reconstruction using artificial ligament [Polyethylene Terephthalates (PET)],which has good biocompatibility and mechanical properties,is prevalent.However,the low tendon-to-bone healing rate due to the PET' s hydrophobicity limits the clinical application.Methods This study aimed to observe the effects of the coating bioactive glass (58S) synthetic anterior cruciate ligament (ACL) on osteoblastic proliferation and cytoactivity in vitro.By using coating technique,bioactive glass (58S) was coated on the Polyethylene Terephthalates (PET) fibers.The scanning electron micrographs showed that bioactive glass (58S) were spindle-shaped and well-orientated on the PET fibers.Then,MC3T3-E1 osteoblasts were seeded onto the PET or the coating PET.Results The number of osteoblasts was significantly increased in the coating PET (8.92 ± 0.17 ) as compared with the PET (6.25±0.27) by using automated cell counter at the 5th day (P ＜ 0.05 ).Alkaline phosphatase activity and methyl thiazol tetrazolium ( MTT) test also showed that the coating fibrous scaffold induced signifienat osteogenesis and cell proliferation as compared to PET without coating.Conclusion The coating bioactive glass (58S) provides an instructive microenvironment for osteoblast proliferation. Key words: Anterior cruciate ligament; Polyethylene Terephthalates; Artificial ligament; Bioactive glass

  • the effect of Polyethylene Terephthalates coated with 58s bioactive glass on graft bone healing
    Chinese Journal of Orthopaedics, 2012
    Co-Authors: W U Yang, Shiyi Chen, Jia Jiang, L I Hong, Kai Gao
    Abstract:

    Objective To observe the effect of Polyethylene Terephthalates (PET) coated with 58S bioactive glass on graft-bone healing.Methods The PET coated with 58S bioactive glass was used in experimental group,and uncoated PET was used as a control.The coating solution was made of 20％ bioactive glass powder and 80％ gelatin powder (by weight).In our vitro study,4×104/ml MT3T3-E1 cells were cultured in 24-well plates with the coated or uncoated PET,and the MTT and ALP were tested at 1,3,5 days to show the proliferation and the activity of the cells.The SEM and the X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fiber.In our vivo study,24 skeletally mature New Zealand white rabbits were randomly divided into two groups,the 58S-PET group and the PET group.Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model.Mechanical examination and histological assay were taken to verify the coating effect in vivo.Results The 58S-PET group showed significantly differences in both the MTT and ALP tests at each time point (3,5 days) compared with the PET group.In the animal experiments,the maximum load increased by time in both groups.At 6 weeks,the load-to-failure was significantly higher in the 58S-PET group [(61.70±6.95) N]than that of the PET group [(45.21±9.78) N].At 12 weeks,the load-to-failure was also significantly higher in the 58S-PET group [(89.25±9.50) N]than that of the PET group [(71.38±6.26) N].In the histological assay,it was found that there was new bone formation in the indistinct interface between the graft and the host bone in both groups at 6,12 weeks,and a stronger binding was seen in the 58S-PET group than in the PET group.Conclusion The 58S-PET could enhance the proliferation and activity of the osteoblast and therefore promote the new bone formation and subsequently leads to a positive effect on tendon-bone healing. Key words: Anterior cruciate ligament;  Polyethylene Terephthalates;  Biomechanics