Scan Science and Technology
Contact Leading Edge Experts & Companies
Alkaline Condition
The Experts below are selected from a list of 28080 Experts worldwide ranked by ideXlab platform
Weiqi Yan – One of the best experts on this subject based on the ideXlab platform.
-
porous β tricalcium phosphate collagen composites prepared in an Alkaline Condition
Journal of Biomedical Materials Research Part A, 2008Co-Authors: Chao Zou, Wenjian Weng, Kui Cheng, Ge Shen, Gaorong Han, Binggang Guan, Weiqi YanAbstract:Bone substitute materials with natural bone-like structure are considered to be favorable for bone regeneration. In this work, porous β-tricalcium phosphate (β-TCP)/collagen composite consisting of bone-like microstructural units was prepared using nanosized β-TCP particles and Alkaline-disassembled collagen. The resulting composite showed a good interconnecting porous structure with ∼90% porosity and 100 ∼ 300 μm pore size. The pore walls were dense, and the combination status of collagen and nanosized β-TCP particles demonstrated that nanosized β-TCP particles tightly connected collagen microfibrils as a bone-like microstructural unit. MTT and Alkaline phosphatase (ALP) assays showed that the porous composite had enhanced effects on cellular proliferation and activity of osteoblast compared with a control of pure collagen. It is suggested that the adoption of nanosized β-TCP particles is a main contribution to the formation of the composite with a bone-like microstructural unit, and the unique microstructure could be a main role for the composite to have the positive influence on osteoblast cell proliferation. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res, 2008
-
Porous β-tricalcium phosphate/collagen composites prepared in an Alkaline Condition
Journal of biomedical materials research. Part A, 2008Co-Authors: Chao Zou, Wenjian Weng, Kui Cheng, Ge Shen, Gaorong Han, Binggang Guan, Weiqi YanAbstract:Bone substitute materials with natural bone-like structure are considered to be favorable for bone regeneration. In this work, porous β-tricalcium phosphate (β-TCP)/collagen composite consisting of bone-like microstructural units was prepared using nanosized β-TCP particles and Alkaline-disassembled collagen. The resulting composite showed a good interconnecting porous structure with ∼90% porosity and 100 ∼ 300 μm pore size. The pore walls were dense, and the combination status of collagen and nanosized β-TCP particles demonstrated that nanosized β-TCP particles tightly connected collagen microfibrils as a bone-like microstructural unit. MTT and Alkaline phosphatase (ALP) assays showed that the porous composite had enhanced effects on cellular proliferation and activity of osteoblast compared with a control of pure collagen. It is suggested that the adoption of nanosized β-TCP particles is a main contribution to the formation of the composite with a bone-like microstructural unit, and the unique microstructure could be a main role for the composite to have the positive influence on osteoblast cell proliferation. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res, 2008
Chao Zou – One of the best experts on this subject based on the ideXlab platform.
-
porous β tricalcium phosphate collagen composites prepared in an Alkaline Condition
Journal of Biomedical Materials Research Part A, 2008Co-Authors: Chao Zou, Wenjian Weng, Kui Cheng, Ge Shen, Gaorong Han, Binggang Guan, Weiqi YanAbstract:Bone substitute materials with natural bone-like structure are considered to be favorable for bone regeneration. In this work, porous β-tricalcium phosphate (β-TCP)/collagen composite consisting of bone-like microstructural units was prepared using nanosized β-TCP particles and Alkaline-disassembled collagen. The resulting composite showed a good interconnecting porous structure with ∼90% porosity and 100 ∼ 300 μm pore size. The pore walls were dense, and the combination status of collagen and nanosized β-TCP particles demonstrated that nanosized β-TCP particles tightly connected collagen microfibrils as a bone-like microstructural unit. MTT and Alkaline phosphatase (ALP) assays showed that the porous composite had enhanced effects on cellular proliferation and activity of osteoblast compared with a control of pure collagen. It is suggested that the adoption of nanosized β-TCP particles is a main contribution to the formation of the composite with a bone-like microstructural unit, and the unique microstructure could be a main role for the composite to have the positive influence on osteoblast cell proliferation. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res, 2008
-
Porous β-tricalcium phosphate/collagen composites prepared in an Alkaline Condition
Journal of biomedical materials research. Part A, 2008Co-Authors: Chao Zou, Wenjian Weng, Kui Cheng, Ge Shen, Gaorong Han, Binggang Guan, Weiqi YanAbstract:Bone substitute materials with natural bone-like structure are considered to be favorable for bone regeneration. In this work, porous β-tricalcium phosphate (β-TCP)/collagen composite consisting of bone-like microstructural units was prepared using nanosized β-TCP particles and Alkaline-disassembled collagen. The resulting composite showed a good interconnecting porous structure with ∼90% porosity and 100 ∼ 300 μm pore size. The pore walls were dense, and the combination status of collagen and nanosized β-TCP particles demonstrated that nanosized β-TCP particles tightly connected collagen microfibrils as a bone-like microstructural unit. MTT and Alkaline phosphatase (ALP) assays showed that the porous composite had enhanced effects on cellular proliferation and activity of osteoblast compared with a control of pure collagen. It is suggested that the adoption of nanosized β-TCP particles is a main contribution to the formation of the composite with a bone-like microstructural unit, and the unique microstructure could be a main role for the composite to have the positive influence on osteoblast cell proliferation. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res, 2008
Jianmin Chen – One of the best experts on this subject based on the ideXlab platform.
-
preparation of shuttle like sb2s3 nanorod bundles via a solvothermal approach under Alkaline Condition
Crystal Research and Technology, 2010Co-Authors: Ling Zhang, Lei Chen, Hongqi Wan, Huidi Zhoul, Jianmin ChenAbstract:Uniform shuttle-like Sb2S3 nanorod-bundles were synthesized via a polyvinylpyrrolidone (PVP) assisted solvothermal approach under Alkaline Condition, using antimony chloride (SbCl3) and thiourea (CH4N2S, Tu) as the starting materials in ethanol. The phase structure, composition and morphology of the product were characterized by means of X-ray diffraction (XRD), energy dispersive X-ray spectrometry (EDS), transmission elecelectron microscopy (TEM), and high-resolution transmission elecelectron microscopy (HRTEM). XRD and EDS results confirm that the synthesized Sb2S3 nanorod-bundles have an orthorhombic structure and an atomic ratio of 3:2 for S:Sb. TEM and HRTEM results show that the shuttle-like Sb2S3 bundles are composed of nanorods with a size distribution of 20-40 nm and growing along c-axis. Furthermore, experiments under different reaction Conditions were carried out and the mechanism for the growth of nanorod-bundles was discussed (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
-
Preparation of shuttle‐like Sb2S3 nanorod‐bundles via a solvothermal approach under Alkaline Condition
Crystal Research and Technology, 2010Co-Authors: Ling Zhang, Lei Chen, Hongqi Wan, Huidi Zhoul, Jianmin ChenAbstract:Uniform shuttle-like Sb2S3 nanorod-bundles were synthesized via a polyvinylpyrrolidone (PVP) assisted solvothermal approach under Alkaline Condition, using antimony chloride (SbCl3) and thiourea (CH4N2S, Tu) as the starting materials in ethanol. The phase structure, composition and morphology of the product were characterized by means of X-ray diffraction (XRD), energy dispersive X-ray spectrometry (EDS), transmission elecelectron microscopy (TEM), and high-resolution transmission elecelectron microscopy (HRTEM). XRD and EDS results confirm that the synthesized Sb2S3 nanorod-bundles have an orthorhombic structure and an atomic ratio of 3:2 for S:Sb. TEM and HRTEM results show that the shuttle-like Sb2S3 bundles are composed of nanorods with a size distribution of 20-40 nm and growing along c-axis. Furthermore, experiments under different reaction Conditions were carried out and the mechanism for the growth of nanorod-bundles was discussed (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Tae-jin Lee – One of the best experts on this subject based on the ideXlab platform.
-
Hydrogen production and microbial diversity in sewage sludge fermentation preceded by heat and Alkaline treatment.
Bioresource technology, 2012Co-Authors: Jung-hyun Kang, Daekeun Kim, Tae-jin LeeAbstract:Combined pretreatment of heat treatment with Alkaline Condition was applied to the sewage sludge in order to acquire the effective method for sludge solubilization and bio-hydrogen production. Solubilization ratio of the sludge with heat treatment at Alkaline Condition (pH 13) was as high as 85.0%, resulting in an increase of COD concentration in aqueous solution, but the ratio of sludge with heat treatment or Alkaline treatment alone was 32.2% and 56.3%, respectively. During the fermentation of the pretreated sludge, a significant increase of hydrogen production was observed with a low strength of ammonia, showing that ammonia in the aqueous phase could inhibit bio-hydrogen production. Klebsiella, Enterobacter or Clostridium genus were mostly related on the hydrogen production.
Venkata S Mohan – One of the best experts on this subject based on the ideXlab platform.
-
acidogenic fermentation of food waste for volatile fatty acid production with co generation of biohydrogen
Bioresource Technology, 2015Co-Authors: Shikha Dahiya, Omprakash Sarkar, Y V Swamy, Venkata S MohanAbstract:Abstract Fermentation experiments were designed to elucidate the functional role of the redox microenvironment on volatile fatty acid (VFA, short chain carboxylic acid) production and co-generation of biohydrogen (H 2 ). Higher VFA productivity was observed at pH 10 operation (6.3 g/l) followed by pH 9, pH 6, pH 5, pH 7, pH 8 and pH 11 (3.5 g/l). High degree of acidification, good system buffering capacity along with co-generation of higher H 2 production from food waste was also noticed at Alkaline Condition. Experiments illustrated the role of initial pH on carboxylic acids synthesis. Alkaline redox Conditions assist solubilization of carbohydrates, protein and fats and also suppress the growth of methanogens. Among the carboxylic acids, acetate fraction was higher at Alkaline Condition than corresponding neutral or acidic operations. Integrated process of VFA production from waste with co-generation of H 2 can be considered as a green and sustainable platform for value-addition.