The Experts below are selected from a list of 338223 Experts worldwide ranked by ideXlab platform
Patrick C Hallenbeck - One of the best experts on this subject based on the ideXlab platform.
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increased hydrogen yield and cod removal from starch glucose based medium by sequential dark and photo fermentation using clostridium butyricum and rhodopseudomonas palustris
International Journal of Hydrogen Energy, 2017Co-Authors: Zeynep Yilmazer Hitit, Carolina Zampol Lazaro, Patrick C HallenbeckAbstract:Abstract Hydrogen can be produced via dark and photo-fermentation using either single-stage or two-stage processes. The advantage of a two-stage system is that it is possible to separately optimize and Control Culture conditions for the dark and photo-fermentative bacteria. In the present study a mixture of starch and glucose was used as carbon source for the dark fermentation step. Response surface methodology (RSM) with a Box-Behnken design (BBD) was applied to the photo-fermentation stage for the optimization of key parameters: inoculum concentration ( Rhodopseudomonas palustris ), substrate concentration (dark fermentation effluent (DFE)) and pH. In this sequential two-stage system, the highest overall hydrogen yield (8.3 ± 0.1 mmol H 2 /gCOD), overall hydrogen production (1.62 mmol) and the photo fermentation yield (7.21 ± 0.2 mmol H 2 /gCOD) were achieved at inoculum of 9 mL (1.64 ± 0.7 × 10 8 cells), a DFE dilution of 2.5× and a pH of 7.5, which were center points of the design. 97% COD removal was achieved at the highest dilution of DFE (lowest concentration of carbon source) at pH 6.5.
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Increased hydrogen yield and COD removal from starch/glucose based medium by sequential dark and photo-fermentation using Clostridium butyricum and Rhodopseudomonas palustris
International Journal of Hydrogen Energy, 2017Co-Authors: Zeynep Yilmazer Hitit, Carolina Zampol Lazaro, Patrick C HallenbeckAbstract:Abstract Hydrogen can be produced via dark and photo-fermentation using either single-stage or two-stage processes. The advantage of a two-stage system is that it is possible to separately optimize and Control Culture conditions for the dark and photo-fermentative bacteria. In the present study a mixture of starch and glucose was used as carbon source for the dark fermentation step. Response surface methodology (RSM) with a Box-Behnken design (BBD) was applied to the photo-fermentation stage for the optimization of key parameters: inoculum concentration ( Rhodopseudomonas palustris ), substrate concentration (dark fermentation effluent (DFE)) and pH. In this sequential two-stage system, the highest overall hydrogen yield (8.3 ± 0.1 mmol H 2 /gCOD), overall hydrogen production (1.62 mmol) and the photo fermentation yield (7.21 ± 0.2 mmol H 2 /gCOD) were achieved at inoculum of 9 mL (1.64 ± 0.7 × 10 8 cells), a DFE dilution of 2.5× and a pH of 7.5, which were center points of the design. 97% COD removal was achieved at the highest dilution of DFE (lowest concentration of carbon source) at pH 6.5.
Tokio Nawa - One of the best experts on this subject based on the ideXlab platform.
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Insulin-like growth factor-I stimulates cell proliferation in the outer layer of Hertwig’s epithelial root sheath and elongation of the tooth root in mouse molars in vitro
Cell and Tissue Research, 2005Co-Authors: Naoki Fujiwara, Makoto J Tabata, Makoto Endoh, Kiyoto Ishizeki, Tokio NawaAbstract:To elucidate the mechanism of root formation in tooth development, we examined the role of insulin-like growth factor I (IGF-I) on early root formation in mandibular first molar teeth from 5-day-old mice. Immunohistochemistry revealed the specific localization of the IGF-I receptor in Hertwig’s epithelial root sheath (HERS) in the tooth root. The effect of IGF-I on root development, especially on HERS, was subsequently examined in vitro. The Control Culture showed normal development of HERS and the periodontium, resembling that in vivo. However, the presence of 100 ng/ml IGF-I resulted in elongation of HERS and increased cell proliferation in its outer layer. These effects were negated by the addition of antibodies specific for IGF-I. Thus, we propose that IGF-I is involved in early root formation by regulating the mitotic activity in the outer layer of HERS.
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insulin like growth factor i stimulates cell proliferation in the outer layer of hertwig s epithelial root sheath and elongation of the tooth root in mouse molars in vitro
Cell and Tissue Research, 2005Co-Authors: Naoki Fujiwara, Makoto J Tabata, Makoto Endoh, Kiyoto Ishizeki, Tokio NawaAbstract:To elucidate the mechanism of root formation in tooth development, we examined the role of insulin-like growth factor I (IGF-I) on early root formation in mandibular first molar teeth from 5-day-old mice. Immunohistochemistry revealed the specific localization of the IGF-I receptor in Hertwig’s epithelial root sheath (HERS) in the tooth root. The effect of IGF-I on root development, especially on HERS, was subsequently examined in vitro. The Control Culture showed normal development of HERS and the periodontium, resembling that in vivo. However, the presence of 100 ng/ml IGF-I resulted in elongation of HERS and increased cell proliferation in its outer layer. These effects were negated by the addition of antibodies specific for IGF-I. Thus, we propose that IGF-I is involved in early root formation by regulating the mitotic activity in the outer layer of HERS.
Zeynep Yilmazer Hitit - One of the best experts on this subject based on the ideXlab platform.
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increased hydrogen yield and cod removal from starch glucose based medium by sequential dark and photo fermentation using clostridium butyricum and rhodopseudomonas palustris
International Journal of Hydrogen Energy, 2017Co-Authors: Zeynep Yilmazer Hitit, Carolina Zampol Lazaro, Patrick C HallenbeckAbstract:Abstract Hydrogen can be produced via dark and photo-fermentation using either single-stage or two-stage processes. The advantage of a two-stage system is that it is possible to separately optimize and Control Culture conditions for the dark and photo-fermentative bacteria. In the present study a mixture of starch and glucose was used as carbon source for the dark fermentation step. Response surface methodology (RSM) with a Box-Behnken design (BBD) was applied to the photo-fermentation stage for the optimization of key parameters: inoculum concentration ( Rhodopseudomonas palustris ), substrate concentration (dark fermentation effluent (DFE)) and pH. In this sequential two-stage system, the highest overall hydrogen yield (8.3 ± 0.1 mmol H 2 /gCOD), overall hydrogen production (1.62 mmol) and the photo fermentation yield (7.21 ± 0.2 mmol H 2 /gCOD) were achieved at inoculum of 9 mL (1.64 ± 0.7 × 10 8 cells), a DFE dilution of 2.5× and a pH of 7.5, which were center points of the design. 97% COD removal was achieved at the highest dilution of DFE (lowest concentration of carbon source) at pH 6.5.
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Increased hydrogen yield and COD removal from starch/glucose based medium by sequential dark and photo-fermentation using Clostridium butyricum and Rhodopseudomonas palustris
International Journal of Hydrogen Energy, 2017Co-Authors: Zeynep Yilmazer Hitit, Carolina Zampol Lazaro, Patrick C HallenbeckAbstract:Abstract Hydrogen can be produced via dark and photo-fermentation using either single-stage or two-stage processes. The advantage of a two-stage system is that it is possible to separately optimize and Control Culture conditions for the dark and photo-fermentative bacteria. In the present study a mixture of starch and glucose was used as carbon source for the dark fermentation step. Response surface methodology (RSM) with a Box-Behnken design (BBD) was applied to the photo-fermentation stage for the optimization of key parameters: inoculum concentration ( Rhodopseudomonas palustris ), substrate concentration (dark fermentation effluent (DFE)) and pH. In this sequential two-stage system, the highest overall hydrogen yield (8.3 ± 0.1 mmol H 2 /gCOD), overall hydrogen production (1.62 mmol) and the photo fermentation yield (7.21 ± 0.2 mmol H 2 /gCOD) were achieved at inoculum of 9 mL (1.64 ± 0.7 × 10 8 cells), a DFE dilution of 2.5× and a pH of 7.5, which were center points of the design. 97% COD removal was achieved at the highest dilution of DFE (lowest concentration of carbon source) at pH 6.5.
Naoki Fujiwara - One of the best experts on this subject based on the ideXlab platform.
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Insulin-like growth factor-I stimulates cell proliferation in the outer layer of Hertwig’s epithelial root sheath and elongation of the tooth root in mouse molars in vitro
Cell and Tissue Research, 2005Co-Authors: Naoki Fujiwara, Makoto J Tabata, Makoto Endoh, Kiyoto Ishizeki, Tokio NawaAbstract:To elucidate the mechanism of root formation in tooth development, we examined the role of insulin-like growth factor I (IGF-I) on early root formation in mandibular first molar teeth from 5-day-old mice. Immunohistochemistry revealed the specific localization of the IGF-I receptor in Hertwig’s epithelial root sheath (HERS) in the tooth root. The effect of IGF-I on root development, especially on HERS, was subsequently examined in vitro. The Control Culture showed normal development of HERS and the periodontium, resembling that in vivo. However, the presence of 100 ng/ml IGF-I resulted in elongation of HERS and increased cell proliferation in its outer layer. These effects were negated by the addition of antibodies specific for IGF-I. Thus, we propose that IGF-I is involved in early root formation by regulating the mitotic activity in the outer layer of HERS.
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insulin like growth factor i stimulates cell proliferation in the outer layer of hertwig s epithelial root sheath and elongation of the tooth root in mouse molars in vitro
Cell and Tissue Research, 2005Co-Authors: Naoki Fujiwara, Makoto J Tabata, Makoto Endoh, Kiyoto Ishizeki, Tokio NawaAbstract:To elucidate the mechanism of root formation in tooth development, we examined the role of insulin-like growth factor I (IGF-I) on early root formation in mandibular first molar teeth from 5-day-old mice. Immunohistochemistry revealed the specific localization of the IGF-I receptor in Hertwig’s epithelial root sheath (HERS) in the tooth root. The effect of IGF-I on root development, especially on HERS, was subsequently examined in vitro. The Control Culture showed normal development of HERS and the periodontium, resembling that in vivo. However, the presence of 100 ng/ml IGF-I resulted in elongation of HERS and increased cell proliferation in its outer layer. These effects were negated by the addition of antibodies specific for IGF-I. Thus, we propose that IGF-I is involved in early root formation by regulating the mitotic activity in the outer layer of HERS.
Makoto J Tabata - One of the best experts on this subject based on the ideXlab platform.
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Insulin-like growth factor-I stimulates cell proliferation in the outer layer of Hertwig’s epithelial root sheath and elongation of the tooth root in mouse molars in vitro
Cell and Tissue Research, 2005Co-Authors: Naoki Fujiwara, Makoto J Tabata, Makoto Endoh, Kiyoto Ishizeki, Tokio NawaAbstract:To elucidate the mechanism of root formation in tooth development, we examined the role of insulin-like growth factor I (IGF-I) on early root formation in mandibular first molar teeth from 5-day-old mice. Immunohistochemistry revealed the specific localization of the IGF-I receptor in Hertwig’s epithelial root sheath (HERS) in the tooth root. The effect of IGF-I on root development, especially on HERS, was subsequently examined in vitro. The Control Culture showed normal development of HERS and the periodontium, resembling that in vivo. However, the presence of 100 ng/ml IGF-I resulted in elongation of HERS and increased cell proliferation in its outer layer. These effects were negated by the addition of antibodies specific for IGF-I. Thus, we propose that IGF-I is involved in early root formation by regulating the mitotic activity in the outer layer of HERS.
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insulin like growth factor i stimulates cell proliferation in the outer layer of hertwig s epithelial root sheath and elongation of the tooth root in mouse molars in vitro
Cell and Tissue Research, 2005Co-Authors: Naoki Fujiwara, Makoto J Tabata, Makoto Endoh, Kiyoto Ishizeki, Tokio NawaAbstract:To elucidate the mechanism of root formation in tooth development, we examined the role of insulin-like growth factor I (IGF-I) on early root formation in mandibular first molar teeth from 5-day-old mice. Immunohistochemistry revealed the specific localization of the IGF-I receptor in Hertwig’s epithelial root sheath (HERS) in the tooth root. The effect of IGF-I on root development, especially on HERS, was subsequently examined in vitro. The Control Culture showed normal development of HERS and the periodontium, resembling that in vivo. However, the presence of 100 ng/ml IGF-I resulted in elongation of HERS and increased cell proliferation in its outer layer. These effects were negated by the addition of antibodies specific for IGF-I. Thus, we propose that IGF-I is involved in early root formation by regulating the mitotic activity in the outer layer of HERS.