Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5163344
Ruixia Wei, Cailing Yang, Ruizhi Pang, Yanxia Li, Chun-Po Bu
The resin adsorption process has been developed to remove phenols from coking wastewater and its technological parameters are optimized. The results show that the ultra-cross linking adsorption resin, NDA-99, is an effective adsorbent to treat the coking waste water when its pH is 4.0 and the absorbing flux is 40 mL/h, and the mono-column wastewater treatment capacity is 300 mL per batch. Under the condition of 50degC, 10 mL 8% NaOH + 10 mL 4% NaOH + 20 mL water is selected as the desorption reagent, and the flux is WmL/h. After the treatment process, the concentrations of volatile phenol and COD decrease from about 1 380 mg/L to 12 mg/L, and 15 500 mg/L to less than 650 mg/L respectively. The raw phenol desorption solution can be recovered just as the high concentration desorption solution by isopropyl ether extraction-distillation. Thus, the resource recycle of phenol in coking wastewater is carried out.
{"title":"Resources Reuse the Phenols in the Coking Wastewater by the Method of Resin Adsorption","authors":"Ruixia Wei, Cailing Yang, Ruizhi Pang, Yanxia Li, Chun-Po Bu","doi":"10.1109/ICBBE.2009.5163344","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5163344","url":null,"abstract":"The resin adsorption process has been developed to remove phenols from coking wastewater and its technological parameters are optimized. The results show that the ultra-cross linking adsorption resin, NDA-99, is an effective adsorbent to treat the coking waste water when its pH is 4.0 and the absorbing flux is 40 mL/h, and the mono-column wastewater treatment capacity is 300 mL per batch. Under the condition of 50degC, 10 mL 8% NaOH + 10 mL 4% NaOH + 20 mL water is selected as the desorption reagent, and the flux is WmL/h. After the treatment process, the concentrations of volatile phenol and COD decrease from about 1 380 mg/L to 12 mg/L, and 15 500 mg/L to less than 650 mg/L respectively. The raw phenol desorption solution can be recovered just as the high concentration desorption solution by isopropyl ether extraction-distillation. Thus, the resource recycle of phenol in coking wastewater is carried out.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"48 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81779495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5163464
Miao Liu, Beihai Zhou, Zhansheng Wang
Catalytic ozonation/biological activated carbon process was applied for advanced drinking water treatment in this study. The results showed that with the ozone dosage of 2.0mg/L, the removal of CODMn, TOC and UV 254 in catalytic ozonation unit was 24.6%, 15.9% and 59.8%, and increased to 40%, 16% and 68% respectively after being treated by BAC. The catalytic ozonation unit contributed to more than 50% of the total removal. The maximum removal of BDOC was as high as 73.3%. It was also found that ozone and catalyst (activated carbon) acted in synergetic effect rather than in pure addition.
{"title":"Study on Catalytic Ozonation/BAC Process for Advanced Drinking Water Treatment","authors":"Miao Liu, Beihai Zhou, Zhansheng Wang","doi":"10.1109/ICBBE.2009.5163464","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5163464","url":null,"abstract":"Catalytic ozonation/biological activated carbon process was applied for advanced drinking water treatment in this study. The results showed that with the ozone dosage of 2.0mg/L, the removal of CODMn, TOC and UV 254 in catalytic ozonation unit was 24.6%, 15.9% and 59.8%, and increased to 40%, 16% and 68% respectively after being treated by BAC. The catalytic ozonation unit contributed to more than 50% of the total removal. The maximum removal of BDOC was as high as 73.3%. It was also found that ozone and catalyst (activated carbon) acted in synergetic effect rather than in pure addition.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"7 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82086369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5163001
Chengbo Yu, Huafeng Qing, Lian Zhang
In this paper, we propose a new object recognition algorithm called two-directional two-dimensional kernel-based principal component analysis(K2DPCA plus 2DPCA). This approach mainly analyzes the object in the two dimensional principal component analysis (2DPCA) transformed space. Firstly, decorrelation in the row direction of images by through the standard K2DPCA method, then using 2DPCA way to further decorrelation in the column direction of images in the K2DPCA subspace. To overcome the shortcoming of massive memory requirements of the 2DPCA and 2D-FPCA, we introduce K2DPCA plus 2DPCA method, which needs smaller memory space and has higher discernment rate, and computational efficiency is higher than the standard KPCA /K2DPCA/(2D) 2 FPCA method. Finally, we verify this method in the finger vein database.
{"title":"K2DPCA Plus 2DPCA: An Efficient Approach for Appearance Based Object Recognition","authors":"Chengbo Yu, Huafeng Qing, Lian Zhang","doi":"10.1109/ICBBE.2009.5163001","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5163001","url":null,"abstract":"In this paper, we propose a new object recognition algorithm called two-directional two-dimensional kernel-based principal component analysis(K2DPCA plus 2DPCA). This approach mainly analyzes the object in the two dimensional principal component analysis (2DPCA) transformed space. Firstly, decorrelation in the row direction of images by through the standard K2DPCA method, then using 2DPCA way to further decorrelation in the column direction of images in the K2DPCA subspace. To overcome the shortcoming of massive memory requirements of the 2DPCA and 2D-FPCA, we introduce K2DPCA plus 2DPCA method, which needs smaller memory space and has higher discernment rate, and computational efficiency is higher than the standard KPCA /K2DPCA/(2D) 2 FPCA method. Finally, we verify this method in the finger vein database.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"36 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82098500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5162818
Youqin Zou, Wen-tao Zhang, Wenbin Zhou
Constructed rapid infiltration system ( CRI ) is simulated through two groups of 3 soil columns with the height of 30 cm, 55 cm and 80 cm respectively. After pretreatment, the mixed wastewater of regenerated-paper making is put into the six soil columns. There are 16 kinds of hydraulic loading cycles made of 4 kinds of flooding-drying ratios (1:6, 1:4, 1:2, 1:1) and 4 kinds of flooding time (4 h, 8 h, 12 h, 16 h). As a result, the systems adsorb ions periodically, adsorption is mild while release is rapid, and the periods of adsorption and release are about 40 hours, respectively. The removal of COD mainly depends on aerobic biodegradation in the aerobic-anaerobic alternate zone. The COD removal of unit height is more because of better reoxygenation effect when the soil column is shorter. Blocking mainly exists in the shallow surface of the system.
{"title":"Experimental Research on Constructed Rapid Infiltration System Treating Wastewater of Regenerated-Paper Making","authors":"Youqin Zou, Wen-tao Zhang, Wenbin Zhou","doi":"10.1109/ICBBE.2009.5162818","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5162818","url":null,"abstract":"Constructed rapid infiltration system ( CRI ) is simulated through two groups of 3 soil columns with the height of 30 cm, 55 cm and 80 cm respectively. After pretreatment, the mixed wastewater of regenerated-paper making is put into the six soil columns. There are 16 kinds of hydraulic loading cycles made of 4 kinds of flooding-drying ratios (1:6, 1:4, 1:2, 1:1) and 4 kinds of flooding time (4 h, 8 h, 12 h, 16 h). As a result, the systems adsorb ions periodically, adsorption is mild while release is rapid, and the periods of adsorption and release are about 40 hours, respectively. The removal of COD mainly depends on aerobic biodegradation in the aerobic-anaerobic alternate zone. The COD removal of unit height is more because of better reoxygenation effect when the soil column is shorter. Blocking mainly exists in the shallow surface of the system.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"19 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82268124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5163388
Xianwei Wang, Xiuzhen Li, Jiujun Lv, Zongmei Li
The response of stores of carbon in peatland to global warming is a major uncertainty in predicting the future carbon budget. We used a short-term laboratory incubation to simulate effects on the potential CO 2 emission of peatland soil in Mohe, China under soil temperature (5, 10 15 and 20degC) and soil moisture (0, 30, 60, 100%WHC and completely water saturated). The rates of peat carbon mineralized decreased greatly in the earlier phase, but became stabile after 20 days and total carbon mineralization ranged 20.04 to 112.92 mg across sites and experiment treatments. Carbon mineralization rates decreased with soil depth, increased with temperature and reached highest rates at 60%WHC at the same temperature for all treatments. The calculated Q 10 values ranged from 1.878 to 2.181, varying with the soil depths and soil moisture. The sensitivity of C flux to moisture depend on temperature. However the Q 10 was not significantly affected by soil moisture and depth. We developed a two compartment model to predict the measured CO 2 emission as a multiplicative function of temperature and moisture and the model predicted C flux very well (R 2 >0.888, P<0.001). Our results indicate that the Mohe peatlands would lead to a positive feedback effect on climate change. It is necessary to include such responses in models science they might represent a potential C emission source to peatland ecosystem.
{"title":"Simulating Effects of Temperature and Moisture on Carbon Emission of Permafrost Peatland in Mohe, China","authors":"Xianwei Wang, Xiuzhen Li, Jiujun Lv, Zongmei Li","doi":"10.1109/ICBBE.2009.5163388","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5163388","url":null,"abstract":"The response of stores of carbon in peatland to global warming is a major uncertainty in predicting the future carbon budget. We used a short-term laboratory incubation to simulate effects on the potential CO 2 emission of peatland soil in Mohe, China under soil temperature (5, 10 15 and 20degC) and soil moisture (0, 30, 60, 100%WHC and completely water saturated). The rates of peat carbon mineralized decreased greatly in the earlier phase, but became stabile after 20 days and total carbon mineralization ranged 20.04 to 112.92 mg across sites and experiment treatments. Carbon mineralization rates decreased with soil depth, increased with temperature and reached highest rates at 60%WHC at the same temperature for all treatments. The calculated Q 10 values ranged from 1.878 to 2.181, varying with the soil depths and soil moisture. The sensitivity of C flux to moisture depend on temperature. However the Q 10 was not significantly affected by soil moisture and depth. We developed a two compartment model to predict the measured CO 2 emission as a multiplicative function of temperature and moisture and the model predicted C flux very well (R 2 >0.888, P<0.001). Our results indicate that the Mohe peatlands would lead to a positive feedback effect on climate change. It is necessary to include such responses in models science they might represent a potential C emission source to peatland ecosystem.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"14 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82491128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5163029
G. Jing, Yang Liu, Chunjie Han, Qing-Fu Zhu
Under this condition of direct current (DC), according to the property that ion electromigration happens on the external electric field, mathematical modeling for desalination by electrodialysis (ED) was established on the basis of NaCl separation experimental data. The mathematical modeling started from a differential equation of steady-state mass balance, derived the equation and was validated by experiments. The model parameter was determined by the experiment data. The model gives concentration of dilute compartment for various voltages, flow rates and feed concentrations. According to comparing predicted data with experimental data, it was found that there is a good consistency between the experimental and calculated data and the mathematical modeling could be used to well predict the process.
{"title":"Mathematical Modeling for Desalination by Electrodialysis","authors":"G. Jing, Yang Liu, Chunjie Han, Qing-Fu Zhu","doi":"10.1109/ICBBE.2009.5163029","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5163029","url":null,"abstract":"Under this condition of direct current (DC), according to the property that ion electromigration happens on the external electric field, mathematical modeling for desalination by electrodialysis (ED) was established on the basis of NaCl separation experimental data. The mathematical modeling started from a differential equation of steady-state mass balance, derived the equation and was validated by experiments. The model parameter was determined by the experiment data. The model gives concentration of dilute compartment for various voltages, flow rates and feed concentrations. According to comparing predicted data with experimental data, it was found that there is a good consistency between the experimental and calculated data and the mathematical modeling could be used to well predict the process.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"6 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82494950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5162166
Wei Wang, Zuoliang Xiong, Lin Zou
In this paper, a delayed stage-structured predator- prey model with the immature prey are taken care of by their parents and biological control strategies (that is releasing natural enemies at different fixed time) is considered. By using comparison theorem, the existence of the globally asymptotically stable prey-eradication periodic solution when the number of releasing natural enemies more than some critical value is proved. The conditions for the permanence of the system are given. Numerical simulation proved the academic results.
{"title":"A Delayed Stage-Structured Predator-Prey Model with Impulsive Perturbations on Predator","authors":"Wei Wang, Zuoliang Xiong, Lin Zou","doi":"10.1109/ICBBE.2009.5162166","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5162166","url":null,"abstract":"In this paper, a delayed stage-structured predator- prey model with the immature prey are taken care of by their parents and biological control strategies (that is releasing natural enemies at different fixed time) is considered. By using comparison theorem, the existence of the globally asymptotically stable prey-eradication periodic solution when the number of releasing natural enemies more than some critical value is proved. The conditions for the permanence of the system are given. Numerical simulation proved the academic results.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"6 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82499171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5163537
Chunsheng Fang, Y. Shan, H. Meng, Na Li, Yang Cheng, Hongwen Liu, Bi Zhang, Ju Wang
Coal chemical industry is one of the typical high water-consuming industries. In the coal-rich regions where are short of water resources, restriction of water resources and the environment will be bottlenecks in the development of this industry. In this paper, water-saving methods and several safe ways to deal with coal chemical industrial wastewater are studied. Afterwards, taking a coal chemical industry project area in Northwest China as an example, the feasibility of its water supply planning and wastewater treatment planning is analyzed and some reasonable suggestions are put forward, the results of which could provide scientific foundation for the development of coal chemical industry in arid area.
{"title":"Study on Water-Saving Methods and Countermeasures of Developing Coal Chemical Industry in Arid Area","authors":"Chunsheng Fang, Y. Shan, H. Meng, Na Li, Yang Cheng, Hongwen Liu, Bi Zhang, Ju Wang","doi":"10.1109/ICBBE.2009.5163537","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5163537","url":null,"abstract":"Coal chemical industry is one of the typical high water-consuming industries. In the coal-rich regions where are short of water resources, restriction of water resources and the environment will be bottlenecks in the development of this industry. In this paper, water-saving methods and several safe ways to deal with coal chemical industrial wastewater are studied. Afterwards, taking a coal chemical industry project area in Northwest China as an example, the feasibility of its water supply planning and wastewater treatment planning is analyzed and some reasonable suggestions are put forward, the results of which could provide scientific foundation for the development of coal chemical industry in arid area.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"1 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78838476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5162176
Pengfei Liu, Zhenbing Zeng, Ziliang Qian, Kaiyan Feng, Yudong Cai
Many biological sequence databases have redundant sequences which are not helpful to statistical analysis and re- quire more computational time and resources to process. This lead us to design a new and fast program to generate a non- redundant sequence set. A graph theoretic algorithm was de- signed to process BLAST output and remove redundant pro- teins from a protein sequence database. We have developed a program named BlastCuller which can be used to generate a non-redundant protein database. BlastCuller is a flexible pro- gram with a parameter of sequence similarity cutoff, which can be a decimal from 0.0 to 1.0. This program can be down- loaded from http://pcal.biosino.org/BlastCuller.html.
{"title":"A Graph Theoretic Algorithm for Removing Redundant Protein Sequences","authors":"Pengfei Liu, Zhenbing Zeng, Ziliang Qian, Kaiyan Feng, Yudong Cai","doi":"10.1109/ICBBE.2009.5162176","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5162176","url":null,"abstract":"Many biological sequence databases have redundant sequences which are not helpful to statistical analysis and re- quire more computational time and resources to process. This lead us to design a new and fast program to generate a non- redundant sequence set. A graph theoretic algorithm was de- signed to process BLAST output and remove redundant pro- teins from a protein sequence database. We have developed a program named BlastCuller which can be used to generate a non-redundant protein database. BlastCuller is a flexible pro- gram with a parameter of sequence similarity cutoff, which can be a decimal from 0.0 to 1.0. This program can be down- loaded from http://pcal.biosino.org/BlastCuller.html.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"3 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78875555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-06-11DOI: 10.1109/ICBBE.2009.5162449
Zhen Gao, X. Luo
This paper aims to evaluate the effect of surface roughness of commercially pure titanium (Ti) on the adhesion and proliferation of human periodontal ligament cells (hPDLCs). Four Ti surfaces of dental implants were compared through different systems in vitro. The surface roughness of Ti was measured by TR240 mobile surface roughmeter. hPDLCs were seeded on Ti and their response to smooth and rough surfaces manufactured from Ti was examined by cell morphology, acridine orange fluorescent staining and alkaline phosphatase (ALP) activity. The surface roughness data of the samples for Group A to D was 0.5995plusmn 0.0083, 0.4065 plusmn 0.0046, 0.3588 plusmn 0.0118 and 0.0087 plusmn 0.0022 mum respectively (F = 6190, P < 0.0001). There was significant difference in surface roughness between all the groups (P < 0.001). hPDLCs were fusiform in shape after they were seeded on Ti, simultaneously few hPDLCs were triangle or polygon in shape. hPDLCs exhibit decreased proliferation on rougher surfaces based on reduced cell amount through the fluorescent staining. hPDLCs had decreased ALP mRNA expression when grown on rougher surfaces. Surface roughness of titanium is one of the important parameters that affect hPDLCs behavior.
{"title":"Biological Effect of Titanium's Surface Roughness on Periodontal Ligament Cells","authors":"Zhen Gao, X. Luo","doi":"10.1109/ICBBE.2009.5162449","DOIUrl":"https://doi.org/10.1109/ICBBE.2009.5162449","url":null,"abstract":"This paper aims to evaluate the effect of surface roughness of commercially pure titanium (Ti) on the adhesion and proliferation of human periodontal ligament cells (hPDLCs). Four Ti surfaces of dental implants were compared through different systems in vitro. The surface roughness of Ti was measured by TR240 mobile surface roughmeter. hPDLCs were seeded on Ti and their response to smooth and rough surfaces manufactured from Ti was examined by cell morphology, acridine orange fluorescent staining and alkaline phosphatase (ALP) activity. The surface roughness data of the samples for Group A to D was 0.5995plusmn 0.0083, 0.4065 plusmn 0.0046, 0.3588 plusmn 0.0118 and 0.0087 plusmn 0.0022 mum respectively (F = 6190, P < 0.0001). There was significant difference in surface roughness between all the groups (P < 0.001). hPDLCs were fusiform in shape after they were seeded on Ti, simultaneously few hPDLCs were triangle or polygon in shape. hPDLCs exhibit decreased proliferation on rougher surfaces based on reduced cell amount through the fluorescent staining. hPDLCs had decreased ALP mRNA expression when grown on rougher surfaces. Surface roughness of titanium is one of the important parameters that affect hPDLCs behavior.","PeriodicalId":6430,"journal":{"name":"2009 3rd International Conference on Bioinformatics and Biomedical Engineering","volume":"39 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76424109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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