The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform
Kenzo Asaoka - One of the best experts on this subject based on the ideXlab platform.
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non decay type fast Setting calcium phosphate cement Setting Behaviour in calf serum and its tissue response
Biomaterials, 1996Co-Authors: Youji Miyamoto, Masaru Nagayama, Kunio Ishikawa, Masaaki Takechi, Miwako Yuasa, Masayuki Kon, Kenzo AsaokaAbstract:Abstract Non-decay type fast-Setting calcium phosphate cement (nd-FSCPC) was evaluated in terms of its Setting Behaviour in calf serum and its tissue response to investigate the feasibility of its clinical use in surgical applications. Non-decay type cements were prepared by adding various amounts of sodium alginate to the liquid phase of base cements, fast-Setting calcium phosphate cement (FSCPC) and conventional calcium phosphate cement (c-CPC). Cement pastes were immersed in serum at 37 °C immediately after mixing, and decay Behaviour, Setting time and mechanical strength were measured to evaluate the possibility of their use in surgical applications. Also, nd-FSCPC was implanted into rat subcutaneous tissue for the initial evaluation of biocompatibility of this potential bioactive cement. nd-FSCPC set in approximately 6–7 min in serum, even when the cement paste was immersed in the serum immediately after mixing, whereas c-CPC and FSCPC decayed completely upon immersion. nd-FSCPC transforms to hydroxyapatite (HA) within 24 h and shows a diametral tensile strength of approximately 4–5 MPa. As a result of transformation to HA, nd-FSCPC showed excellent tissue response when implanted subcutaneously in rats. We conclude that nd-FSCPC has good potential value for use in orthopaedics, plastic and reconstructive surgery, and oral and maxillofacial surgery, where the cement is exposed to blood.
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in vivo Setting Behaviour of fast Setting calcium phosphate cement
Biomaterials, 1995Co-Authors: Youji Miyamoto, Hirokazu Fukao, Masahiro Sawada, Masaru Nagayama, Kunio Ishikawa, Kenzo AsaokaAbstract:Abstract The in vivo Setting Behaviour of fast-Setting calcium phosphate cement (FSCPC) between femoral muscles of the rat was investigated to evaluate the possible value of FSCPC for medical and dental application. Conventional CPC (c-CPC) and FSCPC were implanted between femoral muscles, and various aspects of the Setting Behaviour such as Setting time, mechanical strength and conversion ratio of cement into hydroxyapatite (HAP: Ca 10 (PO 4 ) 6 (OH) 2 ) were measured by the Vicat needle method, diametral tensile strength (DTS) measurement, and quantitative powder X-ray diffraction (XRD) analysis, respectively. The Setting time of FSCPC in vivo was 5–7 min, in contrast to 48 min for c-CPC. As a result of its fast Setting, set specimens of FSCPC showed higher mechanical strength from the initial stage than c-CPC. Higher DTS values were observed in FSCPC than c-CPC implanted after 24 h. Powder XRD analysis revealed faster conversion of FSCPC than c-CPC into HAP, which was responsible both for the faster Setting and higher mechanical strength from the initial stage. We concluded, therefore, that FSCPC may be used for a wide range of clinical applications, i.e. fields where fast Setting is required such as orthopaedic, plastic and reconstructive, and oral and maxillo-facial surgery.
Youji Miyamoto - One of the best experts on this subject based on the ideXlab platform.
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non decay type fast Setting calcium phosphate cement Setting Behaviour in calf serum and its tissue response
Biomaterials, 1996Co-Authors: Youji Miyamoto, Masaru Nagayama, Kunio Ishikawa, Masaaki Takechi, Miwako Yuasa, Masayuki Kon, Kenzo AsaokaAbstract:Abstract Non-decay type fast-Setting calcium phosphate cement (nd-FSCPC) was evaluated in terms of its Setting Behaviour in calf serum and its tissue response to investigate the feasibility of its clinical use in surgical applications. Non-decay type cements were prepared by adding various amounts of sodium alginate to the liquid phase of base cements, fast-Setting calcium phosphate cement (FSCPC) and conventional calcium phosphate cement (c-CPC). Cement pastes were immersed in serum at 37 °C immediately after mixing, and decay Behaviour, Setting time and mechanical strength were measured to evaluate the possibility of their use in surgical applications. Also, nd-FSCPC was implanted into rat subcutaneous tissue for the initial evaluation of biocompatibility of this potential bioactive cement. nd-FSCPC set in approximately 6–7 min in serum, even when the cement paste was immersed in the serum immediately after mixing, whereas c-CPC and FSCPC decayed completely upon immersion. nd-FSCPC transforms to hydroxyapatite (HA) within 24 h and shows a diametral tensile strength of approximately 4–5 MPa. As a result of transformation to HA, nd-FSCPC showed excellent tissue response when implanted subcutaneously in rats. We conclude that nd-FSCPC has good potential value for use in orthopaedics, plastic and reconstructive surgery, and oral and maxillofacial surgery, where the cement is exposed to blood.
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in vivo Setting Behaviour of fast Setting calcium phosphate cement
Biomaterials, 1995Co-Authors: Youji Miyamoto, Hirokazu Fukao, Masahiro Sawada, Masaru Nagayama, Kunio Ishikawa, Kenzo AsaokaAbstract:Abstract The in vivo Setting Behaviour of fast-Setting calcium phosphate cement (FSCPC) between femoral muscles of the rat was investigated to evaluate the possible value of FSCPC for medical and dental application. Conventional CPC (c-CPC) and FSCPC were implanted between femoral muscles, and various aspects of the Setting Behaviour such as Setting time, mechanical strength and conversion ratio of cement into hydroxyapatite (HAP: Ca 10 (PO 4 ) 6 (OH) 2 ) were measured by the Vicat needle method, diametral tensile strength (DTS) measurement, and quantitative powder X-ray diffraction (XRD) analysis, respectively. The Setting time of FSCPC in vivo was 5–7 min, in contrast to 48 min for c-CPC. As a result of its fast Setting, set specimens of FSCPC showed higher mechanical strength from the initial stage than c-CPC. Higher DTS values were observed in FSCPC than c-CPC implanted after 24 h. Powder XRD analysis revealed faster conversion of FSCPC than c-CPC into HAP, which was responsible both for the faster Setting and higher mechanical strength from the initial stage. We concluded, therefore, that FSCPC may be used for a wide range of clinical applications, i.e. fields where fast Setting is required such as orthopaedic, plastic and reconstructive, and oral and maxillo-facial surgery.
Masaru Nagayama - One of the best experts on this subject based on the ideXlab platform.
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non decay type fast Setting calcium phosphate cement Setting Behaviour in calf serum and its tissue response
Biomaterials, 1996Co-Authors: Youji Miyamoto, Masaru Nagayama, Kunio Ishikawa, Masaaki Takechi, Miwako Yuasa, Masayuki Kon, Kenzo AsaokaAbstract:Abstract Non-decay type fast-Setting calcium phosphate cement (nd-FSCPC) was evaluated in terms of its Setting Behaviour in calf serum and its tissue response to investigate the feasibility of its clinical use in surgical applications. Non-decay type cements were prepared by adding various amounts of sodium alginate to the liquid phase of base cements, fast-Setting calcium phosphate cement (FSCPC) and conventional calcium phosphate cement (c-CPC). Cement pastes were immersed in serum at 37 °C immediately after mixing, and decay Behaviour, Setting time and mechanical strength were measured to evaluate the possibility of their use in surgical applications. Also, nd-FSCPC was implanted into rat subcutaneous tissue for the initial evaluation of biocompatibility of this potential bioactive cement. nd-FSCPC set in approximately 6–7 min in serum, even when the cement paste was immersed in the serum immediately after mixing, whereas c-CPC and FSCPC decayed completely upon immersion. nd-FSCPC transforms to hydroxyapatite (HA) within 24 h and shows a diametral tensile strength of approximately 4–5 MPa. As a result of transformation to HA, nd-FSCPC showed excellent tissue response when implanted subcutaneously in rats. We conclude that nd-FSCPC has good potential value for use in orthopaedics, plastic and reconstructive surgery, and oral and maxillofacial surgery, where the cement is exposed to blood.
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in vivo Setting Behaviour of fast Setting calcium phosphate cement
Biomaterials, 1995Co-Authors: Youji Miyamoto, Hirokazu Fukao, Masahiro Sawada, Masaru Nagayama, Kunio Ishikawa, Kenzo AsaokaAbstract:Abstract The in vivo Setting Behaviour of fast-Setting calcium phosphate cement (FSCPC) between femoral muscles of the rat was investigated to evaluate the possible value of FSCPC for medical and dental application. Conventional CPC (c-CPC) and FSCPC were implanted between femoral muscles, and various aspects of the Setting Behaviour such as Setting time, mechanical strength and conversion ratio of cement into hydroxyapatite (HAP: Ca 10 (PO 4 ) 6 (OH) 2 ) were measured by the Vicat needle method, diametral tensile strength (DTS) measurement, and quantitative powder X-ray diffraction (XRD) analysis, respectively. The Setting time of FSCPC in vivo was 5–7 min, in contrast to 48 min for c-CPC. As a result of its fast Setting, set specimens of FSCPC showed higher mechanical strength from the initial stage than c-CPC. Higher DTS values were observed in FSCPC than c-CPC implanted after 24 h. Powder XRD analysis revealed faster conversion of FSCPC than c-CPC into HAP, which was responsible both for the faster Setting and higher mechanical strength from the initial stage. We concluded, therefore, that FSCPC may be used for a wide range of clinical applications, i.e. fields where fast Setting is required such as orthopaedic, plastic and reconstructive, and oral and maxillo-facial surgery.
Kunio Ishikawa - One of the best experts on this subject based on the ideXlab platform.
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non decay type fast Setting calcium phosphate cement Setting Behaviour in calf serum and its tissue response
Biomaterials, 1996Co-Authors: Youji Miyamoto, Masaru Nagayama, Kunio Ishikawa, Masaaki Takechi, Miwako Yuasa, Masayuki Kon, Kenzo AsaokaAbstract:Abstract Non-decay type fast-Setting calcium phosphate cement (nd-FSCPC) was evaluated in terms of its Setting Behaviour in calf serum and its tissue response to investigate the feasibility of its clinical use in surgical applications. Non-decay type cements were prepared by adding various amounts of sodium alginate to the liquid phase of base cements, fast-Setting calcium phosphate cement (FSCPC) and conventional calcium phosphate cement (c-CPC). Cement pastes were immersed in serum at 37 °C immediately after mixing, and decay Behaviour, Setting time and mechanical strength were measured to evaluate the possibility of their use in surgical applications. Also, nd-FSCPC was implanted into rat subcutaneous tissue for the initial evaluation of biocompatibility of this potential bioactive cement. nd-FSCPC set in approximately 6–7 min in serum, even when the cement paste was immersed in the serum immediately after mixing, whereas c-CPC and FSCPC decayed completely upon immersion. nd-FSCPC transforms to hydroxyapatite (HA) within 24 h and shows a diametral tensile strength of approximately 4–5 MPa. As a result of transformation to HA, nd-FSCPC showed excellent tissue response when implanted subcutaneously in rats. We conclude that nd-FSCPC has good potential value for use in orthopaedics, plastic and reconstructive surgery, and oral and maxillofacial surgery, where the cement is exposed to blood.
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in vivo Setting Behaviour of fast Setting calcium phosphate cement
Biomaterials, 1995Co-Authors: Youji Miyamoto, Hirokazu Fukao, Masahiro Sawada, Masaru Nagayama, Kunio Ishikawa, Kenzo AsaokaAbstract:Abstract The in vivo Setting Behaviour of fast-Setting calcium phosphate cement (FSCPC) between femoral muscles of the rat was investigated to evaluate the possible value of FSCPC for medical and dental application. Conventional CPC (c-CPC) and FSCPC were implanted between femoral muscles, and various aspects of the Setting Behaviour such as Setting time, mechanical strength and conversion ratio of cement into hydroxyapatite (HAP: Ca 10 (PO 4 ) 6 (OH) 2 ) were measured by the Vicat needle method, diametral tensile strength (DTS) measurement, and quantitative powder X-ray diffraction (XRD) analysis, respectively. The Setting time of FSCPC in vivo was 5–7 min, in contrast to 48 min for c-CPC. As a result of its fast Setting, set specimens of FSCPC showed higher mechanical strength from the initial stage than c-CPC. Higher DTS values were observed in FSCPC than c-CPC implanted after 24 h. Powder XRD analysis revealed faster conversion of FSCPC than c-CPC into HAP, which was responsible both for the faster Setting and higher mechanical strength from the initial stage. We concluded, therefore, that FSCPC may be used for a wide range of clinical applications, i.e. fields where fast Setting is required such as orthopaedic, plastic and reconstructive, and oral and maxillo-facial surgery.
Jennifer V Greenslade - One of the best experts on this subject based on the ideXlab platform.
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new insights into price Setting Behaviour in the uk introduction and survey results
The Economic Journal, 2012Co-Authors: Jennifer V Greenslade, Miles ParkerAbstract:This article introduces the other contributions in this Feature which use individual price data to investigate the extent of pricing rigidities in the UK. It also reports the most relevant results of a new survey of the price-Setting Behaviour that we have conducted for the UK, including details about why prices are sticky. The articles consider whether the microdata or survey results are consistent with particular theories of price Setting. Our results suggest that there is heterogeneity in price-Setting Behaviour, which is ignored in typical ‘representative agent’ models.
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new insights into price Setting Behaviour in the united kingdom
Research Papers in Economics, 2010Co-Authors: Jennifer V Greenslade, Miles ParkerAbstract:It is important to understand how companies set prices, since price-Setting Behaviour plays a key role in the monetary policy transmission mechanism. Many surveys have been conducted in a range of countries to shed light on this issue by asking companies directly about how they set prices. This paper reviews the results of a new survey of the price-Setting Behaviour by the Bank of England of around 700 UK firms. In terms of how companies set prices, the survey evidence supported the use of the mark-up over costs form of pricing. Firms reviewed prices more frequently than actually changing them, with the median firm changing price only once per year, but the frequency with which companies changed their prices varied considerably across sectors. Over the past decade a significant number of firms had increased the frequency of price changes. Different factors influenced price rises and price falls. Higher costs – in particular, labour costs and raw materials – were the most important driver behind price rises, whereas lower demand and competitors’ prices were the main factor resulting in price falls. Nearly half of firms changed their prices within three months of an increase in costs or a fall in demand.
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price Setting Behaviour in the united kingdom
Social Science Research Network, 2008Co-Authors: Jennifer V GreensladeAbstract:It is important for central banks to understand how companies set prices, since price-Setting Behaviour plays a key role in the monetary policy transmission mechanism. Surveys of companies have been conducted in a variety of countries to shed light on this issue. Earlier this year the Bank of England asked companies who are contacts of the Bank's Agents about how they set prices. The survey adds to and updates our understanding. It indicates that the frequency with which companies change their prices varies considerably across sectors but that over the past decade a significant number have increased the frequency of price changes. Different factors influence price rises and falls but nearly half of companies change their prices within three months of an increase in costs or a fall in demand.