Using the anaerobic granular sludge acted asbiosorbent, this paper studied the biosorption and desorption of copper-containing wastewater. The results showed that, granular sludge adsorption rate up to 97.67% and citric acid got best desorption efficiency. The study of kinetics model and thermodynamics isotherm adsorption model showed that Pseudo-second Order kinetic model and Langmuir isothermal adsorption model could fitting the adsorption of Cu2+, which obtained high correlation coefficient, R2=0.9999 andR2=0.9934, respectively.
{"title":"Study on Biosorption and Desorption of Copper-Containing Wastewater by Anaerobic Granular Sludge","authors":"Ye Xuejun, C. Mei, Wu Suying, Liu Li","doi":"10.1109/CDCIEM.2011.476","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.476","url":null,"abstract":"Using the anaerobic granular sludge acted asbiosorbent, this paper studied the biosorption and desorption of copper-containing wastewater. The results showed that, granular sludge adsorption rate up to 97.67% and citric acid got best desorption efficiency. The study of kinetics model and thermodynamics isotherm adsorption model showed that Pseudo-second Order kinetic model and Langmuir isothermal adsorption model could fitting the adsorption of Cu2+, which obtained high correlation coefficient, R2=0.9999 andR2=0.9934, respectively.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74860197","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}
In coal mines, phase-sensitive short-circuit protection is one of most common methods to protect power supply line by distinguishing between short-circuit current and starting current, but it is difficult to avoid false operation by hardware technology to catch power factor angle on the influence of in-situ environment and device characteristics. In this paper, a new method is proposed to calculate power factor angle by dq coordinate transformation, which can successfully detect the zero-crossing of voltage and current, and avoid the false operation of phase-sensitive short-circuit protection.
{"title":"Algorithm of Digital Phase-Sensitive Short-Circuit Protection Based on dq Coordinate Transformation","authors":"Wang Xiangqian, L. Zhe","doi":"10.1109/CDCIEM.2011.508","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.508","url":null,"abstract":"In coal mines, phase-sensitive short-circuit protection is one of most common methods to protect power supply line by distinguishing between short-circuit current and starting current, but it is difficult to avoid false operation by hardware technology to catch power factor angle on the influence of in-situ environment and device characteristics. In this paper, a new method is proposed to calculate power factor angle by dq coordinate transformation, which can successfully detect the zero-crossing of voltage and current, and avoid the false operation of phase-sensitive short-circuit protection.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78699729","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 alkaline wastewater from oil refinery is a high concentration alkaline wastewater, which contains a great deal of sulfide £¬ phenol and oil pollutants. A novel two stage circulating biological aerated filter (CBAF) was used to treat the alkaline wastewater after its neutralization. The factors of various air/water volumetric ratio, hydraulic retention time (HRT), which affected the removal of COD, sulfide, phenol and oil pollutants were investigated. The experimental results show that, when the wastewater feed flow rate is 0.5 m3¡¤h-1, the air/water volumetric ratio is 24:1 with the HRT of 4 h for single CBA Freactor, the influent average concentrations of COD, sulfide, phenol and oil pollutants are 1371, 234, 181 and81.4 mg¡¤L-1, respectively. After two stage CBAF reactor treatment, the total average removal rates of COD, sulfide, phenol and oil pollutants are 72.0, 98.8, 79.6 and85.2 %, respectively. And the average effluent concentration of COD, sulfide, phenol and oil pollutants are 384, 2.90, 37.0 and 12.0 mg¡¤L-1, respectively. The results demonstrate that the CBAF reactor is a kind of high efficiency and low cost treatment technique which has a good application foreground for the treatment of the alkaline wastewater from oil refinery.
{"title":"Treatment of Alkaline Wastewater from Oil Refinery Using Circulating Biological Aerated Filter","authors":"Xie Wenyu, C. Jianjun, Zhong Huawen, Liu Dehao","doi":"10.1109/CDCIEM.2011.292","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.292","url":null,"abstract":"The alkaline wastewater from oil refinery is a high concentration alkaline wastewater, which contains a great deal of sulfide £¬ phenol and oil pollutants. A novel two stage circulating biological aerated filter (CBAF) was used to treat the alkaline wastewater after its neutralization. The factors of various air/water volumetric ratio, hydraulic retention time (HRT), which affected the removal of COD, sulfide, phenol and oil pollutants were investigated. The experimental results show that, when the wastewater feed flow rate is 0.5 m3¡¤h-1, the air/water volumetric ratio is 24:1 with the HRT of 4 h for single CBA Freactor, the influent average concentrations of COD, sulfide, phenol and oil pollutants are 1371, 234, 181 and81.4 mg¡¤L-1, respectively. After two stage CBAF reactor treatment, the total average removal rates of COD, sulfide, phenol and oil pollutants are 72.0, 98.8, 79.6 and85.2 %, respectively. And the average effluent concentration of COD, sulfide, phenol and oil pollutants are 384, 2.90, 37.0 and 12.0 mg¡¤L-1, respectively. The results demonstrate that the CBAF reactor is a kind of high efficiency and low cost treatment technique which has a good application foreground for the treatment of the alkaline wastewater from oil refinery.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77720948","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}
For the surficial sediments sampled from the Shaxi River in Sanming, Fujian Province, China, the distribution and fraction of heavy metal zinc in surficial sediments were researched. The microwave digestion result showed that the concentration of zincin surficial sediments ranged from 568 mg/kg to 2126 mg/kg. The results of modified BCR sequential extraction procedure showed that heavy metal zinc in the surficial sediment was mainly associated with residual and acid soluble fractions. The fractions of zinc sampled near the drain were in the order of residual > acid soluble > oxidizable > reducible > water soluble fraction, and in the order of residual > reducible > acid soluble > oxidizable >>water soluble fraction in samples away from the drain. The results indicated that the concentration and fraction of pollutant zinc were significantly correlative to the drain of some iron and steel factory around the Shaxi River, which varied obviously with the downstream distance increasing to the drain. The acid soluble and oxidizable fractions decreased with the downstream distance increasing to the drain of iron and steel factory, however, the residual and reducible fractions increased with the distance increasing.
{"title":"Zinc Distribution in Sediments of the Shaxi River","authors":"L. Zhang, S. Zheng, Renzhang Wang, Yan Zhang","doi":"10.1109/CDCIEM.2011.236","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.236","url":null,"abstract":"For the surficial sediments sampled from the Shaxi River in Sanming, Fujian Province, China, the distribution and fraction of heavy metal zinc in surficial sediments were researched. The microwave digestion result showed that the concentration of zincin surficial sediments ranged from 568 mg/kg to 2126 mg/kg. The results of modified BCR sequential extraction procedure showed that heavy metal zinc in the surficial sediment was mainly associated with residual and acid soluble fractions. The fractions of zinc sampled near the drain were in the order of residual > acid soluble > oxidizable > reducible > water soluble fraction, and in the order of residual > reducible > acid soluble > oxidizable >>water soluble fraction in samples away from the drain. The results indicated that the concentration and fraction of pollutant zinc were significantly correlative to the drain of some iron and steel factory around the Shaxi River, which varied obviously with the downstream distance increasing to the drain. The acid soluble and oxidizable fractions decreased with the downstream distance increasing to the drain of iron and steel factory, however, the residual and reducible fractions increased with the distance increasing.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80178782","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}
A series of the Pb5(PxAs1-xO4)3Cl solid solutions were directly prepared through aqueous precipitation method. The results of the elemental analysis, XRD, FT-IR and SEM characterization have confirmed the forming of the mimetite/pyromorphite solid solutions. The XRD analysis indicated that the end-member components of the solid solutions were well matched respectively to card #01-080-2103for mimetite and #00-019-0701 for pyromorphite, and their corresponding unit cell parameters. In FT-IR spectra, the stretching vibrational absorption band of AsO43- appeared around 788.71-820.00 cm-1 (¦Ã3), and the bending vibration absorption band was also visible at 418.00cm-1 (¦Ã4). In addition, no vibrations of AsO43- appeared at 1407.82 cm-1, 1563.44 cm-1and 1733.26 cm-1. There was a clear water peak of pyromorphite appeared at 3440.62 cm-1 and the anti symmetric stretching peak of PO43- appeared around 979.50-1050.05 cm-1(¦Ã3) and the symmetrical peak appeared around 540.08-575.53cm-1 (¦Ã4). Observed by SEM, the shape of crystals changed gradually from the fibrous, needle-like to the granular solid block as PO43- in the solids increased.
{"title":"Synthesis and Characterization of the Pb5(PxAs1-xO4)3Cl Solid Solutions","authors":"C. Wei, Yinian Zhu, Zonglan Zhang, Yan Pan","doi":"10.1109/CDCIEM.2011.166","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.166","url":null,"abstract":"A series of the Pb5(PxAs1-xO4)3Cl solid solutions were directly prepared through aqueous precipitation method. The results of the elemental analysis, XRD, FT-IR and SEM characterization have confirmed the forming of the mimetite/pyromorphite solid solutions. The XRD analysis indicated that the end-member components of the solid solutions were well matched respectively to card #01-080-2103for mimetite and #00-019-0701 for pyromorphite, and their corresponding unit cell parameters. In FT-IR spectra, the stretching vibrational absorption band of AsO43- appeared around 788.71-820.00 cm-1 (¦Ã3), and the bending vibration absorption band was also visible at 418.00cm-1 (¦Ã4). In addition, no vibrations of AsO43- appeared at 1407.82 cm-1, 1563.44 cm-1and 1733.26 cm-1. There was a clear water peak of pyromorphite appeared at 3440.62 cm-1 and the anti symmetric stretching peak of PO43- appeared around 979.50-1050.05 cm-1(¦Ã3) and the symmetrical peak appeared around 540.08-575.53cm-1 (¦Ã4). Observed by SEM, the shape of crystals changed gradually from the fibrous, needle-like to the granular solid block as PO43- in the solids increased.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73122409","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 objective of this paper is to study the effect ofAl2O3 nanoparticles on the absorption performance inNH3/H2O bubble absorption process. The Al2O3 nanofluids with good dispersion stability within the nanoparticle mass fraction range of 0.2%¡«1.0% are prepared. The result shows that, in the ammonia concentration range of 0%¡«20%, the effective absorption ratio in all case with Al2O3 nanoparticlesis higher than 1.0 and rises with the initial ammonia concentration increasing. When the initial ammonia concentration is 20% and the Al2O3 nanoparticle mass fraction is 0.5%, the effective absorption ratio can reach the maximum 2.017, which indicates that the Al2O3nanoparticles has a significant effect on the bubble absorption performance of ammonia with higher initial concentration, and its possible mechanism is briefly analysed.
{"title":"The Effect of Al2O3 Nanoparticles on the NH3/H2O Bubble Absorption Performance in Binary Nanofluids","authors":"Changwei Pang, Weidong Wu, R. Wu, S. Chen","doi":"10.1109/CDCIEM.2011.163","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.163","url":null,"abstract":"The objective of this paper is to study the effect ofAl2O3 nanoparticles on the absorption performance inNH3/H2O bubble absorption process. The Al2O3 nanofluids with good dispersion stability within the nanoparticle mass fraction range of 0.2%¡«1.0% are prepared. The result shows that, in the ammonia concentration range of 0%¡«20%, the effective absorption ratio in all case with Al2O3 nanoparticlesis higher than 1.0 and rises with the initial ammonia concentration increasing. When the initial ammonia concentration is 20% and the Al2O3 nanoparticle mass fraction is 0.5%, the effective absorption ratio can reach the maximum 2.017, which indicates that the Al2O3nanoparticles has a significant effect on the bubble absorption performance of ammonia with higher initial concentration, and its possible mechanism is briefly analysed.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76794533","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}
Based on voussoir beam structure theory of the overlying strata, deformation mechanism of surrounding rock of gob-side entry at isolated island coal face was analyzed, principles for deformation controlling of surrounding rock were established. According to engineering geological conditions in return airway of 1251(3)Pans an colliery, and distribution of advance abutment pressure, roadways supporting scheme during the tunneling and zoning advance reinforcement plans for roadways before mining. Field practice shows that supporting scheme is feasible for stability of surrounding rock.
{"title":"Surrounding Rock Deformation and Its Controlling Technology Gob-side Entry at Isolated Island Coal Face","authors":"Zhao Wen-hua, Huang Xin-zhu, L. Shu","doi":"10.1109/CDCIEM.2011.581","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.581","url":null,"abstract":"Based on voussoir beam structure theory of the overlying strata, deformation mechanism of surrounding rock of gob-side entry at isolated island coal face was analyzed, principles for deformation controlling of surrounding rock were established. According to engineering geological conditions in return airway of 1251(3)Pans an colliery, and distribution of advance abutment pressure, roadways supporting scheme during the tunneling and zoning advance reinforcement plans for roadways before mining. Field practice shows that supporting scheme is feasible for stability of surrounding rock.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87919822","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}
J. Hang, Zhao Yu, Lei Xiaochun, Xue Guoxin, Tan Yanjun, He Yi-xin
Shrimp wastewater was studied by using photosynthetic bacteria sludge method. The results indicated that this method got better effects than single sludge or only photosynthetic bacteria treatment. The removal of the CODcr could reach 63%, the removal of the NH3-N could reach 92.5£¥. Compared with conventional methods, it had easier operation, lower cost, and need not deal with the problem of sludge. Another advantage of this method was that it could solve the problem of photosynthetic bacteria losing. Based on the experiment a feasible technical method was suggested by the authors.
{"title":"Treat Shrimp Wastewater with Compound Photosynthetic Bacteria","authors":"J. Hang, Zhao Yu, Lei Xiaochun, Xue Guoxin, Tan Yanjun, He Yi-xin","doi":"10.1109/CDCIEM.2011.124","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.124","url":null,"abstract":"Shrimp wastewater was studied by using photosynthetic bacteria sludge method. The results indicated that this method got better effects than single sludge or only photosynthetic bacteria treatment. The removal of the CODcr could reach 63%, the removal of the NH3-N could reach 92.5£¥. Compared with conventional methods, it had easier operation, lower cost, and need not deal with the problem of sludge. Another advantage of this method was that it could solve the problem of photosynthetic bacteria losing. Based on the experiment a feasible technical method was suggested by the authors.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87547853","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}
This paper presented the necessary of the biomass briquette technologies in the north rural areas of China. The biomass briquette technology can be used as a pretreatment technology for the other high-efficient using straw technology, especially for the direct combustion technology. Biomass briquette has obvious advantages such as good combustion characteristics, convenience of storage and transportation. So the biomass briquette technology has broad prospects for development in north rural areas of China. The biomass briquette machine technology has gained much progress. The biomass briquette technologies are getting mature and can be promoted for engineering application in near future. And the further research is needed to reduce energy consumption and increase production rates.
{"title":"Analysis on Straw Stem Briquette Technology and Its Application Extension in North Rural Areas of China","authors":"Tong-li Chang, Shuyang Wang","doi":"10.1109/CDCIEM.2011.88","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.88","url":null,"abstract":"This paper presented the necessary of the biomass briquette technologies in the north rural areas of China. The biomass briquette technology can be used as a pretreatment technology for the other high-efficient using straw technology, especially for the direct combustion technology. Biomass briquette has obvious advantages such as good combustion characteristics, convenience of storage and transportation. So the biomass briquette technology has broad prospects for development in north rural areas of China. The biomass briquette machine technology has gained much progress. The biomass briquette technologies are getting mature and can be promoted for engineering application in near future. And the further research is needed to reduce energy consumption and increase production rates.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86121894","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}
Data envelopment analysis (DEA) is effective to evaluate energy efficiency, but few studies use this technique considering carbon emissions. This paper measures Chinese industrial sector¡¯s energy efficiency considering carbon emissions based on the slack-based measure (SBM) model in1997-2008. The results show that Chinese industrial energy efficiency is relatively low, the average scores (SBM-based)fluctuated between 0.26 and 0.35, and the trend is decreasing gradually. By Comparative analysis, prove that SBM model considering undesirable outputs can better assess energy efficiency and the level of industrial low-carbon development, the last six sectors¡¯ energy efficiency are extremely low and have great potentiality for improvement.
{"title":"Chinese Industrial Energy Efficiency Evaluation Considering Carbon Emissions","authors":"Cao Ming, W. Xiaoping","doi":"10.1109/CDCIEM.2011.453","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.453","url":null,"abstract":"Data envelopment analysis (DEA) is effective to evaluate energy efficiency, but few studies use this technique considering carbon emissions. This paper measures Chinese industrial sector¡¯s energy efficiency considering carbon emissions based on the slack-based measure (SBM) model in1997-2008. The results show that Chinese industrial energy efficiency is relatively low, the average scores (SBM-based)fluctuated between 0.26 and 0.35, and the trend is decreasing gradually. By Comparative analysis, prove that SBM model considering undesirable outputs can better assess energy efficiency and the level of industrial low-carbon development, the last six sectors¡¯ energy efficiency are extremely low and have great potentiality for improvement.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88990081","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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