Nickel (Ni) plays an important role in the growth of plants, but it is also a kind of heavy metal which can easily enrich in soil and exert toxic effect on plants. To evaluate the Ni stress on the maize growth, a pot experiment was conducted by black soils sampled from the field in the middle of Jilin province. And Ni was equilibrated in the soils to graded levels from 0 to 800mg kg−1 soil. The main results were as follows: The concentration of Ni in maize had a negative correlation with the plant dry weight. The symptom of Ni toxicity was as follows: maize root was short and thin, leaf curled with barred vain and fade blade tip, and it was brown and rotten at the connection of the petiole and roots. In this study, the fitting equation of Y=0.3071+0.0012X+-0.0001CX2 described the extremely significant relationship between the amount of effective Ni in soil (when it was below 30mg/kg) and the dry matter weight of maize. The amount of effective Ni in soil (DTPA extracted) which could provide maize with the best growing state was 6.00mg/kg, the toxicity critical value was 11.48mg/kg, the range of Ni luxury absorption was 6.00 -11.48mg/kg. 11.48- 32.77mg/kg caused maize mild toxicity; 32.77-67.38mg/kg caused moderate toxicity and over 67.38mg/kg leaded to serious toxicity. When maize took place mild toxicity, the content of Ni in maize was 33.40-66.40mg/kg. Moderate toxicity was 66.40-111.40mg/kg. Serious toxicity was over 111.40mg/kg. The equations of Y=-0.0013X+0.3126, Y=-0.0010X+0.3364 could be used to express the relationship between effective Ni in soil, Ni in maize and the dry matter weight of maize when toxicity happened. The highest Ni fixed rate was 23.98% when the soil received 25mg/kg Ni.
{"title":"Research on the Symptoms and the Critical Value of Nickel Toxicity of Maize","authors":"Minyi Zhou, Jin-hua Liu, Ya-qing Wang, Jingming Yang, Xiao-bin Yu","doi":"10.1109/ICBBE.2010.5517400","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5517400","url":null,"abstract":"Nickel (Ni) plays an important role in the growth of plants, but it is also a kind of heavy metal which can easily enrich in soil and exert toxic effect on plants. To evaluate the Ni stress on the maize growth, a pot experiment was conducted by black soils sampled from the field in the middle of Jilin province. And Ni was equilibrated in the soils to graded levels from 0 to 800mg kg−1 soil. The main results were as follows: The concentration of Ni in maize had a negative correlation with the plant dry weight. The symptom of Ni toxicity was as follows: maize root was short and thin, leaf curled with barred vain and fade blade tip, and it was brown and rotten at the connection of the petiole and roots. In this study, the fitting equation of Y=0.3071+0.0012X+-0.0001CX2 described the extremely significant relationship between the amount of effective Ni in soil (when it was below 30mg/kg) and the dry matter weight of maize. The amount of effective Ni in soil (DTPA extracted) which could provide maize with the best growing state was 6.00mg/kg, the toxicity critical value was 11.48mg/kg, the range of Ni luxury absorption was 6.00 -11.48mg/kg. 11.48- 32.77mg/kg caused maize mild toxicity; 32.77-67.38mg/kg caused moderate toxicity and over 67.38mg/kg leaded to serious toxicity. When maize took place mild toxicity, the content of Ni in maize was 33.40-66.40mg/kg. Moderate toxicity was 66.40-111.40mg/kg. Serious toxicity was over 111.40mg/kg. The equations of Y=-0.0013X+0.3126, Y=-0.0010X+0.3364 could be used to express the relationship between effective Ni in soil, Ni in maize and the dry matter weight of maize when toxicity happened. The highest Ni fixed rate was 23.98% when the soil received 25mg/kg Ni.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"27 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72680768","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5515499
Yu-yue Zou, Jun Zhang, Xiaoming Han, Yan Kang
The medical image visualization can help the doctor easy to diagnose, and the better quality can help doctor much more. The reflectance model is the key factor to make the quality better. Be enslaved to the computing power of CPU and GPU, some complicated reflectance models have not been used in medical visualization, the simple reflectance model-Phong model been used prevalently. With the growing computing power of GPU, this paper gives an improved reflectance model based on the Cook-Torrance reflectance model, which can render good quality in medical image visualization, and the velocity is 4 to 6 fps, that meet the real time rendering requirement. This reflectance model is a practical model for medical image visualization.
{"title":"A High Quality Reflectance Model in Medical Image Visualization","authors":"Yu-yue Zou, Jun Zhang, Xiaoming Han, Yan Kang","doi":"10.1109/ICBBE.2010.5515499","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5515499","url":null,"abstract":"The medical image visualization can help the doctor easy to diagnose, and the better quality can help doctor much more. The reflectance model is the key factor to make the quality better. Be enslaved to the computing power of CPU and GPU, some complicated reflectance models have not been used in medical visualization, the simple reflectance model-Phong model been used prevalently. With the growing computing power of GPU, this paper gives an improved reflectance model based on the Cook-Torrance reflectance model, which can render good quality in medical image visualization, and the velocity is 4 to 6 fps, that meet the real time rendering requirement. This reflectance model is a practical model for medical image visualization.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"38 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74938059","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}
The research reveals the relationship and enrichment of heavy metals in soil of sewage irrigation area in Guangdong province, southern China. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total concentrations of heavy metals were extracted by HNO3-HF-HClO4. It is concluded that Cu, Zn, Cd, and Pb may be homologous or combined pollution, and Mn and Cr may be also homologous in soil. According to the result of cluster analysis, it is shown that Se and As may have the similar environmental geochemical behavior in topsoil, because the existing forms of them in environment are mainly acid anions. We can conclude that a significant degree of metal pollution exists in soil of sewage irrigation area, particularly for Cd, Cu, Pb and Zn. The degrees of contamination of heavy metals in topsoil (CF of Cd 8.1, Cu 7.0, Zn 5.9, Pb 3.6, Ni 2.1, As 1.8, Cr 1.6, Se 1.5) were higher than that in subsoil (CF of Cd 6.0, Cu 3.4, Zn 3.7, Pb 2.7, Ni 2.0, As 1.6, Cr 1.5, Se 1.4). EF values show deficiency enrichment with Ni, Se, Cr and As, low enrichment with Cu, Zn and Pb, and moderate enrichment with Cd in topsoil in study area, while deficiency enrichment with Ni, Se, Cr, Pb and As, and low enrichment with Cu, Zn and Cd in subsoil in study area.It should be recognized that the hazards posed by food production in sewage irrigation areas may become a common hazard for human.
{"title":"Relationship and Enrichment of Heavy Metals in Soil of Sewage Irrigation Area in Guangdong Province, China","authors":"Guanxing Huang, Jichao Sun, Ji-hong Jing, Jingtao Liu, Yu-xi Zhang, Ying Zhang, Xiaoping Xiang, Haiwei Cui","doi":"10.1109/ICBBE.2010.5517410","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5517410","url":null,"abstract":"The research reveals the relationship and enrichment of heavy metals in soil of sewage irrigation area in Guangdong province, southern China. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total concentrations of heavy metals were extracted by HNO3-HF-HClO4. It is concluded that Cu, Zn, Cd, and Pb may be homologous or combined pollution, and Mn and Cr may be also homologous in soil. According to the result of cluster analysis, it is shown that Se and As may have the similar environmental geochemical behavior in topsoil, because the existing forms of them in environment are mainly acid anions. We can conclude that a significant degree of metal pollution exists in soil of sewage irrigation area, particularly for Cd, Cu, Pb and Zn. The degrees of contamination of heavy metals in topsoil (CF of Cd 8.1, Cu 7.0, Zn 5.9, Pb 3.6, Ni 2.1, As 1.8, Cr 1.6, Se 1.5) were higher than that in subsoil (CF of Cd 6.0, Cu 3.4, Zn 3.7, Pb 2.7, Ni 2.0, As 1.6, Cr 1.5, Se 1.4). EF values show deficiency enrichment with Ni, Se, Cr and As, low enrichment with Cu, Zn and Pb, and moderate enrichment with Cd in topsoil in study area, while deficiency enrichment with Ni, Se, Cr, Pb and As, and low enrichment with Cu, Zn and Cd in subsoil in study area.It should be recognized that the hazards posed by food production in sewage irrigation areas may become a common hazard for human.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"34 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74968694","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5517675
Shaoxiong Zhang, Xueping Gao
In order to reduce the negative effect of lower-temperature water released from the intake to the environment in the downstream reach, a selective withdrawal structure will adopted in Glen Canyon Dam. The 3D numerical model EFDC was used to simulate the velocity fields and water temperatures released with surface and lower withdrawal. The numerical results of water temperature released are validated with the measured data. The velocity fields with surface and lower withdrawal indicate that the mainstream of withdrawal water column is located near the elevation of withdrawal intake. Temperatures of water released from the surface and lower withdrawal are simulated for twelve months. The temperatures of water released with a surface withdrawal are effectively enhanced compared with the lower withdrawal.
{"title":"Effects of Selective Withdrawal on Temperature of Water Released of Glen Canyon Dam","authors":"Shaoxiong Zhang, Xueping Gao","doi":"10.1109/ICBBE.2010.5517675","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5517675","url":null,"abstract":"In order to reduce the negative effect of lower-temperature water released from the intake to the environment in the downstream reach, a selective withdrawal structure will adopted in Glen Canyon Dam. The 3D numerical model EFDC was used to simulate the velocity fields and water temperatures released with surface and lower withdrawal. The numerical results of water temperature released are validated with the measured data. The velocity fields with surface and lower withdrawal indicate that the mainstream of withdrawal water column is located near the elevation of withdrawal intake. Temperatures of water released from the surface and lower withdrawal are simulated for twelve months. The temperatures of water released with a surface withdrawal are effectively enhanced compared with the lower withdrawal.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"31 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77476754","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5518235
Hua Lv, Yanqiu Wang
Abstract:Analysed the research of groundwater vulnerability assessment worldwide actuality, considered the groundwater system vulnerability should be included in groundwater systems anti-fouling and groundwater system vulnerability.Based on the coupled technique of ANN-GIS, a "Three Chart" method was proposed, the maps of distribution of antipollution and the facility-pollution are compounded, and the distribution of the vulnerability of groundwater system is confirmed.
{"title":"Based on the \"Three Chart\" Method of Groundwater Vulnerability Assessment","authors":"Hua Lv, Yanqiu Wang","doi":"10.1109/ICBBE.2010.5518235","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5518235","url":null,"abstract":"Abstract:Analysed the research of groundwater vulnerability assessment worldwide actuality, considered the groundwater system vulnerability should be included in groundwater systems anti-fouling and groundwater system vulnerability.Based on the coupled technique of ANN-GIS, a \"Three Chart\" method was proposed, the maps of distribution of antipollution and the facility-pollution are compounded, and the distribution of the vulnerability of groundwater system is confirmed.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"50 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77576943","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5517350
G. Zhou, Y. He, Huai-yun Zhang
Chitin deacetylase (CDA) is an enzyme that catalyzes the hydrolysis of acetamine groups of N-acetyl-D-glucosamine in chitin. Chitin deacetylase converting chitin to chitosan in fungal cell walls. A total of 208 strains was isolated from soil samples in the riverbank of Xiangjiang River and an island of Zhanjiang. 12 CDA producing strains was founded by color reaction that including three fungus, two bacterias and four actinomycetes. The highest CDA producing strain Z7 had been screened by enzyme activity assays. 16S gene of the strain was amplified and sequenced. The 16S gene sequence data were deposited in the GenBank nucleotide sequence database. The 16S gene sequences were aligned with the multiple - sequence alignment software Clustal S. Similarity values were calculated using the software MegAlign. Phylogenetic and molecular evolutionary analyses were conducted using MEGA by the neighbor - joining algorithms. Aphylogenetic tree was constructed by comparing with the published 16S gene regions of the related bacteria species. In the phylogenetic tree the overall similarity value between strain Z7 and Bacillus amyloliquefaciens are 99%. The wild strain was classfy as Bacillus amyloliquefaciens.
几丁质去乙酰化酶(CDA)是一种催化几丁质中n -乙酰- d -氨基葡萄糖对乙酰胺基水解的酶。几丁质脱乙酰酶在真菌细胞壁将几丁质转化为壳聚糖。从湘江河岸和湛江某岛的土壤样品中分离到208株CDA产菌，通过显色反应鉴定出12株CDA产菌，其中真菌3株，细菌2株，放线菌4株。通过酶活性测定筛选出产CDA最高的菌株Z7。对该菌株的16S基因进行扩增和测序。16S基因序列数据存入GenBank核苷酸序列数据库。用多序列比对软件Clustal s比对16S基因序列，用MegAlign软件计算相似度。利用MEGA进行了系统发育和分子进化分析。通过与相关菌种已发表的16S基因区进行比较，构建了葡萄发生树。在系统发育树上，菌株Z7与解淀粉芽孢杆菌的总体相似性值为99%。野生菌株属解淀粉芽孢杆菌。
{"title":"Screening and 16S rRNA Analysis of the Bacteria of Producing Chitin Deacetylase","authors":"G. Zhou, Y. He, Huai-yun Zhang","doi":"10.1109/ICBBE.2010.5517350","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5517350","url":null,"abstract":"Chitin deacetylase (CDA) is an enzyme that catalyzes the hydrolysis of acetamine groups of N-acetyl-D-glucosamine in chitin. Chitin deacetylase converting chitin to chitosan in fungal cell walls. A total of 208 strains was isolated from soil samples in the riverbank of Xiangjiang River and an island of Zhanjiang. 12 CDA producing strains was founded by color reaction that including three fungus, two bacterias and four actinomycetes. The highest CDA producing strain Z7 had been screened by enzyme activity assays. 16S gene of the strain was amplified and sequenced. The 16S gene sequence data were deposited in the GenBank nucleotide sequence database. The 16S gene sequences were aligned with the multiple - sequence alignment software Clustal S. Similarity values were calculated using the software MegAlign. Phylogenetic and molecular evolutionary analyses were conducted using MEGA by the neighbor - joining algorithms. Aphylogenetic tree was constructed by comparing with the published 16S gene regions of the related bacteria species. In the phylogenetic tree the overall similarity value between strain Z7 and Bacillus amyloliquefaciens are 99%. The wild strain was classfy as Bacillus amyloliquefaciens.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"45 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77603024","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5515640
Hong-ming Li, Xue-qin Wan, Q. Lan, Lu Han, Bo Kang, Wei Wei, Gong-yuan Lei, Jie-ying Huang
In order to prevent the occurrence of complications after wisdom tooth extraction, using clinical research methods, choice of mandibular third molar patients in 65 cases, according to teeth were randomly divided into three groups. Removal of impacted teeth, the first group in the extraction fossa, placed oral tissue patch; the second group to place bone meal and oral tissue patch; third group was control group. Observed after short-term and long-term complications. The results showed that both reduced the short-term and long-term complications after tooth extraction, but the latter is more effective to reduce alveolar bone loss after molar extraction. Guided bone regeneration help to maintain the molar teeth adjacent to the long-term stability and improve the chewing efficiency, and maintain the alveolar ridge of the original form.
{"title":"Guided Bone Regeneration to Prevent Wisdom Tooth Extraction Complications in Clinical Research","authors":"Hong-ming Li, Xue-qin Wan, Q. Lan, Lu Han, Bo Kang, Wei Wei, Gong-yuan Lei, Jie-ying Huang","doi":"10.1109/ICBBE.2010.5515640","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5515640","url":null,"abstract":"In order to prevent the occurrence of complications after wisdom tooth extraction, using clinical research methods, choice of mandibular third molar patients in 65 cases, according to teeth were randomly divided into three groups. Removal of impacted teeth, the first group in the extraction fossa, placed oral tissue patch; the second group to place bone meal and oral tissue patch; third group was control group. Observed after short-term and long-term complications. The results showed that both reduced the short-term and long-term complications after tooth extraction, but the latter is more effective to reduce alveolar bone loss after molar extraction. Guided bone regeneration help to maintain the molar teeth adjacent to the long-term stability and improve the chewing efficiency, and maintain the alveolar ridge of the original form.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"41 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77637688","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5515159
Yu Liu, Jun Shen, X. Zhu
Indoor air quality of the new building has become a major concentration in China. Volatile organic compounds (VOCs) in new buildings were investigated and factors significant to their presence were discussed. Concentrations of volatile organic compounds, temperature and humidity were measured in four new apartment buildings over 6 months following installation. Formaldehyde concentrations in the new buildings were relatively low in the new buildings, which can satisfy the Indoor air quality standard of 0.10mg/m3. But the benzene and total volatile organic compound (TVOC) concentrations were extremely higher indoor, they were approximately three to four times higher than IAQ standard. Simultaneous outdoor samples were also collected to determine indoor to outdoor I/O. ratios for every compound at each location, which showing a dominant effect of indoor sources. The study revealed that the indoor concentrations of selected VOCs on occasions could be significantly high due to various sources. The data presented here can be useful in developing air quality standards for indoor air.
{"title":"Volatile Organic Compounds Concentrations in New Apartment Buildings in Harbin, China","authors":"Yu Liu, Jun Shen, X. Zhu","doi":"10.1109/ICBBE.2010.5515159","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5515159","url":null,"abstract":"Indoor air quality of the new building has become a major concentration in China. Volatile organic compounds (VOCs) in new buildings were investigated and factors significant to their presence were discussed. Concentrations of volatile organic compounds, temperature and humidity were measured in four new apartment buildings over 6 months following installation. Formaldehyde concentrations in the new buildings were relatively low in the new buildings, which can satisfy the Indoor air quality standard of 0.10mg/m3. But the benzene and total volatile organic compound (TVOC) concentrations were extremely higher indoor, they were approximately three to four times higher than IAQ standard. Simultaneous outdoor samples were also collected to determine indoor to outdoor I/O. ratios for every compound at each location, which showing a dominant effect of indoor sources. The study revealed that the indoor concentrations of selected VOCs on occasions could be significantly high due to various sources. The data presented here can be useful in developing air quality standards for indoor air.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"67 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77752971","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5516412
Muqing Qiu, Chengcai Huang
The effect of process parameters (pH, pulp density, inoculum volume of the nutrient medium, silver content) on the rate of copper solubilization was analyzed respectively through silver-catalyzed bioleaching experiments with microorganisms in shake flasks. These results show that the optimal process parameters are: pulp density, 2.5 wt%; silver content, 10mg/L; pH, 1.50-1.80; inoculum volume of the nutrient medium, 40vol%. Furthermore, the addition of the silver could catalyze the process of bioleaching, and high silver concentrations would be harmful to the bacterial activity and the copper extraction. pH and inoculum volume of the nutrient medium had a marked influence on the copper extraction and iron extraction. The bioleaching of the low-grade copper ore requires a minimum amount of the nutrient medium to obtain the maxium efficiency.illustrated by the portions given in this document.
{"title":"Optimizing of Silver-Catalyzed Bioleaching of Low-Grade Copper Ores from Yongping, China","authors":"Muqing Qiu, Chengcai Huang","doi":"10.1109/ICBBE.2010.5516412","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5516412","url":null,"abstract":"The effect of process parameters (pH, pulp density, inoculum volume of the nutrient medium, silver content) on the rate of copper solubilization was analyzed respectively through silver-catalyzed bioleaching experiments with microorganisms in shake flasks. These results show that the optimal process parameters are: pulp density, 2.5 wt%; silver content, 10mg/L; pH, 1.50-1.80; inoculum volume of the nutrient medium, 40vol%. Furthermore, the addition of the silver could catalyze the process of bioleaching, and high silver concentrations would be harmful to the bacterial activity and the copper extraction. pH and inoculum volume of the nutrient medium had a marked influence on the copper extraction and iron extraction. The bioleaching of the low-grade copper ore requires a minimum amount of the nutrient medium to obtain the maxium efficiency.illustrated by the portions given in this document.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77874073","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 : 2010-06-18DOI: 10.1109/ICBBE.2010.5516360
G. Ranganathan, V. Bindhu, R. Rangarajan
This paper presents the evaluation of mental stress assessment using heart rate variability. The heart rate signals are processed first using Fourier transform, then it is applied to wavelet transform. The activity of the autonomic nervous system is noninvasively studied by means of autoregressive (AR) frequency analysis of the heart-rate variability (HRV) signal. Spectral decomposition of the Heart Rate Variability during whole night recordings was obtained, in order to assess the characteristic fluctuations in the heart rate. This paper presents a novel method of HRV analysis for mental stress assessment using fuzzy clustering and robust identification techniques. The approach consists of 1)online monitoring of heart rate signals, 2) signal processing using the Dyadic wavelet.
{"title":"ECG Signal Processing Using Dyadic Wavelet for Mental Stress Assessment","authors":"G. Ranganathan, V. Bindhu, R. Rangarajan","doi":"10.1109/ICBBE.2010.5516360","DOIUrl":"https://doi.org/10.1109/ICBBE.2010.5516360","url":null,"abstract":"This paper presents the evaluation of mental stress assessment using heart rate variability. The heart rate signals are processed first using Fourier transform, then it is applied to wavelet transform. The activity of the autonomic nervous system is noninvasively studied by means of autoregressive (AR) frequency analysis of the heart-rate variability (HRV) signal. Spectral decomposition of the Heart Rate Variability during whole night recordings was obtained, in order to assess the characteristic fluctuations in the heart rate. This paper presents a novel method of HRV analysis for mental stress assessment using fuzzy clustering and robust identification techniques. The approach consists of 1)online monitoring of heart rate signals, 2) signal processing using the Dyadic wavelet.","PeriodicalId":6396,"journal":{"name":"2010 4th International Conference on Bioinformatics and Biomedical Engineering","volume":"78 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2010-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78143156","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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