Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/S1/1
Shuangquan Yao, Huixia Zhu Lei Jiang Shuangxi Nie Chengrong Qin Cong Gao, Chen Liang
The parameters of elemental chlorine-free (ECF) bleaching (D0EpD1) of eucalyptus kraft pulp were optimized to reduce AOX formation. The optimal conditions were pulp concentration 10%, ClO2 dosage 2.8%, pH 3.5, temperature 60°C, time 60 min at D0; H2O2 dosage 1.25%, alkali dosage 2.0%, temperature 65°C, time 105 min at Ep; ClO2 dosage 0.2%, pH 4.5, temperature 60°C, time 55 min at D1. AOX formation was 0.553 kg.tp–1, each stage was 0.470 kg.tp–1, 0.060 kg.tp–1 and 0.023 kg.tp–1, respectively. Compared with un-optimized AOX formation decreased by 23.7%.The brightness and viscosity was 84.36% ISO, 834.6 mL.g–1. In fact, good quality of the pulp was obtained when AOX formation has fallen dramatically. These provide a theoretical basis for reducing the produce of AOX and realizing the clean bleaching.
{"title":"Absorbable Organic Halide Reduction Research in Elemental Chlorine-Free Bleaching of Eucalyptus Kraft Pulp","authors":"Shuangquan Yao, Huixia Zhu Lei Jiang Shuangxi Nie Chengrong Qin Cong Gao, Chen Liang","doi":"10.12783/ISSN.1544-8053/14/S1/1","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/S1/1","url":null,"abstract":"The parameters of elemental chlorine-free (ECF) bleaching (D0EpD1) of eucalyptus kraft pulp were optimized to reduce AOX formation. The optimal conditions were pulp concentration 10%, ClO2 dosage 2.8%, pH 3.5, temperature 60°C, time 60 min at D0; H2O2 dosage 1.25%, alkali dosage 2.0%, temperature 65°C, time 105 min at Ep; ClO2 dosage 0.2%, pH 4.5, temperature 60°C, time 55 min at D1. AOX formation was 0.553 kg.tp–1, each stage was 0.470 kg.tp–1, 0.060 kg.tp–1 and 0.023 kg.tp–1, respectively. Compared with un-optimized AOX formation decreased by 23.7%.The brightness and viscosity was 84.36% ISO, 834.6 mL.g–1. In fact, good quality of the pulp was obtained when AOX formation has fallen dramatically. These provide a theoretical basis for reducing the produce of AOX and realizing the clean bleaching.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"3413 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86627403","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 : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/S1/13
Luo Jian-jun
In order to effectively reduce the compression wave in tunnel and the micro pressure wave at the exit of tunnel, improve the comfort of passengers, this study put forward laying polymeric sand porous material in tunnel by using the sound absorption properties of porous media, and give the numerical simulation calculation method of the aerodynamic effect of three-dimensional compressible, viscous and unsteady flow field when a high-speed train entering into a tunnel, furthermore, the influence of sound absorption board on the aerodynamic effect in tunnel was studied. Theoretical analysis and numerical results show the compression wave in tunnel and the micro pressure wave at the exit of tunnel can be decreased significantly when pasting porous materials in tunnel. The reason is mainly due to there are lots of micro-pores in the material and it could absorb the energy from compression wave, then the peak value of it and pressure gradient are decreased. Secondly, the method of laying polymeric sand sound absorption material has influence on the change of the pressure in the tunnel and the micro pressure wave at the exit of tunnel. When the length and height of sound absorption materials are same, calculation results show that the best pressure reduction effect is achieved when laying the material at the entrance of tunnel. However, when laying the material at different circumferential positions of tunnel, the pressure reduction effect at haunch is better than vault and spandrel. Based on that, considering the pressure noise reduction problem, material cost and height of construction in practical engineering, when laying the material at haunch, the relationship between the reduction effect of pressure gradient and the length of laying is summarized with 3 different speeds, which have certain reference value for the design of the method of laying sound absorption material in tunnel.
{"title":"Influence of Polymeric Sand Porous Material on the Aerodynamic Effect when a High-Speed Train is Entering into a Tunnel","authors":"Luo Jian-jun","doi":"10.12783/ISSN.1544-8053/14/S1/13","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/S1/13","url":null,"abstract":"In order to effectively reduce the compression wave in tunnel and the micro pressure wave at the exit of tunnel, improve the comfort of passengers, this study put forward laying polymeric sand porous material in tunnel by using the sound absorption properties of porous media, and give the numerical simulation calculation method of the aerodynamic effect of three-dimensional compressible, viscous and unsteady flow field when a high-speed train entering into a tunnel, furthermore, the influence of sound absorption board on the aerodynamic effect in tunnel was studied. Theoretical analysis and numerical results show the compression wave in tunnel and the micro pressure wave at the exit of tunnel can be decreased significantly when pasting porous materials in tunnel. The reason is mainly due to there are lots of micro-pores in the material and it could absorb the energy from compression wave, then the peak value of it and pressure gradient are decreased. Secondly, the method of laying polymeric sand sound absorption material has influence on the change of the pressure in the tunnel and the micro pressure wave at the exit of tunnel. When the length and height of sound absorption materials are same, calculation results show that the best pressure reduction effect is achieved when laying the material at the entrance of tunnel. However, when laying the material at different circumferential positions of tunnel, the pressure reduction effect at haunch is better than vault and spandrel. Based on that, considering the pressure noise reduction problem, material cost and height of construction in practical engineering, when laying the material at haunch, the relationship between the reduction effect of pressure gradient and the length of laying is summarized with 3 different speeds, which have certain reference value for the design of the method of laying sound absorption material in tunnel.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86665464","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 : 2017-01-01DOI: 10.12783/issn.1544-8053/14/S1/18
Boye Zhou, Yan Wu
There-dimensional graphene (3DG)/Cu2O nanocomposites are prepared using one-pot template-free solvent-thermal synthesis route with (CH3COO)2Cu·H2O as a precursor. The cube Cu2O nanoparticles are deposited on the spongy nanosheets of 3DG. The adsorbent experiment reveals that the 3DG/Cu2O has a adsorption rate of 83.34% which is 14 times higher than that of pure Cu2O. Using photocatalytic degradation of methyl orange (MO) under visible-light illumination to investigate the photocatalytic activity of 3DG/Cu2O. The prepared 3DG/Cu2O particles exhibited a higher photo-degradation capability than Cu2O. The superior activity of 3DG/Cu2O for MO decomposition can be attributed to not only its nanoporous structure and large specific surface area, but also the strong interaction between 3DG and Cu2O from in-situ synthesis.
{"title":"3D Graphene/Cu2O Nanocomposite as a Highly Efficient Sorbent and Photocatalysis","authors":"Boye Zhou, Yan Wu","doi":"10.12783/issn.1544-8053/14/S1/18","DOIUrl":"https://doi.org/10.12783/issn.1544-8053/14/S1/18","url":null,"abstract":"There-dimensional graphene (3DG)/Cu2O nanocomposites are prepared using one-pot template-free solvent-thermal synthesis route with (CH3COO)2Cu·H2O as a precursor. The cube Cu2O nanoparticles are deposited on the spongy nanosheets of 3DG. The adsorbent experiment reveals that the 3DG/Cu2O has a adsorption rate of 83.34% which is 14 times higher than that of pure Cu2O. Using photocatalytic degradation of methyl orange (MO) under visible-light illumination to investigate the photocatalytic activity of 3DG/Cu2O. The prepared 3DG/Cu2O particles exhibited a higher photo-degradation capability than Cu2O. The superior activity of 3DG/Cu2O for MO decomposition can be attributed to not only its nanoporous structure and large specific surface area, but also the strong interaction between 3DG and Cu2O from in-situ synthesis.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90458874","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 : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/32
Lan‐Lan Zhu, Shengfa Liu, W. Xiong, J. Xiong, Zhebing Hu, Chen Chen
Sn-58Bi eutectic solder ribbon was successfully prepared using an improved single-roller rapid solidification device with the optimum process parameters. The microstructure, melting behavior and wettability of Sn-58Bi eutectic solder ribbon prepared by rapid solidification technology (RST) and conventional casting-rolling process (CRP) respectively were investigated by optical microscopy (OM), differential scanning calorimetry (DSC) and wettability tests. The results show that the forming effect of solder ribbons can be obviously improved by mainly optimizing roller line speed, nozzle-to-roller spacing and heating temperature. Sn-58Bi eutectic solder ribbon prepared by RST has finer microstructure, lower solidus temperature and more excellent wettability than that of the ribbon prepared by CRP. Therefore, the study of Sn-58Bi eutectic solder ribbon is conducive to cut cost, meet growing performance requirements, and reduce lead contamination for electronic package industry.
{"title":"Preparation, Microstructure and Properties of Environmentally Friendly Sn-58Bi Eutectic Solder Ribbon for Electronic Package","authors":"Lan‐Lan Zhu, Shengfa Liu, W. Xiong, J. Xiong, Zhebing Hu, Chen Chen","doi":"10.12783/ISSN.1544-8053/14/1/32","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/32","url":null,"abstract":"Sn-58Bi eutectic solder ribbon was successfully prepared using an improved single-roller rapid solidification device with the optimum process parameters. The microstructure, melting behavior and wettability of Sn-58Bi eutectic solder ribbon prepared by rapid solidification technology (RST) and conventional casting-rolling process (CRP) respectively were investigated by optical microscopy (OM), differential scanning calorimetry (DSC) and wettability tests. The results show that the forming effect of solder ribbons can be obviously improved by mainly optimizing roller line speed, nozzle-to-roller spacing and heating temperature. Sn-58Bi eutectic solder ribbon prepared by RST has finer microstructure, lower solidus temperature and more excellent wettability than that of the ribbon prepared by CRP. Therefore, the study of Sn-58Bi eutectic solder ribbon is conducive to cut cost, meet growing performance requirements, and reduce lead contamination for electronic package industry.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"-1 1","pages":"281-285"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77020220","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 : 2017-01-01DOI: 10.12783/issn.1544-8053/14/1/23
H. Lee
It was first confirmed that the increase of anti-inflammatory activities of Aronia melanocarpa from high-pressure homogenization at 25,000 psi and 25°C was caused by the three times higher extraction of very heat-labile cyanidin-3-O-galactoside (C3G), a bioactive anthocyanin existing in A. melanocarpa, than that of conventional 70% ethanol extraction at 80°C. The extracts from this process showed better efficacies in suppressing the production of both nitric oxide and the cytokines, IL-6 and TNF-α, and resulted in high liver weight gain in mice. This result could be employed to extract other heat-sensitive components from various bioresources.
首先证实，在25000 psi和25°C高压均质条件下，黑果野莓抗炎活性的增强是由于在80°C条件下提取的非常热不稳定的花青素-3- o -半乳糖苷(C3G)比传统的70%乙醇提取高3倍。该工艺的提取物对一氧化氮和细胞因子IL-6、TNF-α的产生均有较好的抑制作用，并导致小鼠肝脏增重。该结果可用于从各种生物资源中提取其他热敏成分。
{"title":"Enhancement of Anti-inflammatory Activities of Aronia melanocarpa through High-pressure Homogenization Process","authors":"H. Lee","doi":"10.12783/issn.1544-8053/14/1/23","DOIUrl":"https://doi.org/10.12783/issn.1544-8053/14/1/23","url":null,"abstract":"It was first confirmed that the increase of anti-inflammatory activities of Aronia melanocarpa from high-pressure homogenization at 25,000 psi and 25°C was caused by the three times higher extraction of very heat-labile cyanidin-3-O-galactoside (C3G), a bioactive anthocyanin existing in A. melanocarpa, than that of conventional 70% ethanol extraction at 80°C. The extracts from this process showed better efficacies in suppressing the production of both nitric oxide and the cytokines, IL-6 and TNF-α, and resulted in high liver weight gain in mice. This result could be employed to extract other heat-sensitive components from various bioresources.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"18 1","pages":"185-192"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78493578","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 : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/21
Zhi-hai He, Yanfei Wu, Yueqing Gao
In order to comprehensively grasp the effect of lithium slag on the properties of concrete and promote the application of lithium slag in concrete, the effect of lithium slag on drying shrinkage of concrete with manufactured-sand was studied by testing drying shrinkage of concrete with manufactured-sand at different ages. The corresponding effect mechanism was also analyzed by water retention of the corresponding mortar and the pore structure of concrete which was obtained by evaporable water test. The results indicate that 15% and 30% lithium slag decrease effectively the drying shrinkage of concrete with manufactured-sand, and with the increase of the content of lithium slag, the decrease effect is better. When the content of lithium slag is increased to be 45%, the drying shrinkage of the concrete is increased. The smaller pores correspond to the higher water retention to decrease the drying shrinkage of manufactured-sand concrete with the appropriate content of lithium slag.
{"title":"Effect of Lithium Slag on Drying Shrinkage of Concrete with Manufactured-sand","authors":"Zhi-hai He, Yanfei Wu, Yueqing Gao","doi":"10.12783/ISSN.1544-8053/14/1/21","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/21","url":null,"abstract":"In order to comprehensively grasp the effect of lithium slag on the properties of concrete and promote the application of lithium slag in concrete, the effect of lithium slag on drying shrinkage of concrete with manufactured-sand was studied by testing drying shrinkage of concrete with manufactured-sand at different ages. The corresponding effect mechanism was also analyzed by water retention of the corresponding mortar and the pore structure of concrete which was obtained by evaporable water test. The results indicate that 15% and 30% lithium slag decrease effectively the drying shrinkage of concrete with manufactured-sand, and with the increase of the content of lithium slag, the decrease effect is better. When the content of lithium slag is increased to be 45%, the drying shrinkage of the concrete is increased. The smaller pores correspond to the higher water retention to decrease the drying shrinkage of manufactured-sand concrete with the appropriate content of lithium slag.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"117 1","pages":"171-176"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75716015","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 : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/43
Zhenwei You, Jian Liu Shun Zhang Wei Sun Yi Zheng, W. Ho
Through investigation and comparison of the methods of water purification, salvage and aeration were confirmed to be the most effective methods in treating the pollution in Lake Taihu. A solar water purification system was designed to achieve the effects of salvage and aeration. To collect algae as “salvage,” this purification system employed a combination of a water pump and filter screen. To increase the dissolved oxygen, the water pump lifted water and sprayed it into the air, and an air pump was equipped to inject oxygen bubbles into the water. After a one-year test at Lake Taihu, the effectiveness of this purification system was confirmed. It could effectively lower the levels of permanganate, NH3 4 NH+ / , and chlorophyll a and increase the level of dissolved oxygen in the lake water.
{"title":"Solar Water Purification System Design: Application Study in Lake Taihu, China","authors":"Zhenwei You, Jian Liu Shun Zhang Wei Sun Yi Zheng, W. Ho","doi":"10.12783/ISSN.1544-8053/14/1/43","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/43","url":null,"abstract":"Through investigation and comparison of the methods of water purification, salvage and aeration were confirmed to be the most effective methods in treating the pollution in Lake Taihu. A solar water purification system was designed to achieve the effects of salvage and aeration. To collect algae as “salvage,” this purification system employed a combination of a water pump and filter screen. To increase the dissolved oxygen, the water pump lifted water and sprayed it into the air, and an air pump was equipped to inject oxygen bubbles into the water. After a one-year test at Lake Taihu, the effectiveness of this purification system was confirmed. It could effectively lower the levels of permanganate, NH3 4 NH+ / , and chlorophyll a and increase the level of dissolved oxygen in the lake water.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"22 1","pages":"363-369"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82631121","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 : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/22
Xingli Jia, Jinliang Xu, Xingliang Liu
In Northern China, heavy trucks are common on highways. Vehicles traveling on longitudinal sections of expressways produce higher carbon emissions. Current carbon emission models include the vehicular operating conditions, but do not reveal the influence of highway alignment conditions, such as the longitudinal gradient and slope length, on emissions. To address this problem, this study attempts to relate the design parameters of longitudinal roadway segments with carbon emissions, as derived from diesel fuel consumption data, using an iterative nonlinear multiple regression method. Diesel fuel consumption data were collected through field tests along two typical overloaded expressways in China’s coal-producing regions. The associated carbon emission data were calculated using the method defined by the Intergovernmental Panel on Climate Change. Using this data, a carbon emission prediction model was developed that related carbon emissions with roadway segment gradients, segment slope length, and initial vehicle speed. The proposed model was verified using the field test data. A relative error of 4.9% between predicted and observed data suggested high accuracy and applicability for the proposed prediction model.
{"title":"Association of Carbon Emissions and Expressway Longitudinal Slope in Northern China","authors":"Xingli Jia, Jinliang Xu, Xingliang Liu","doi":"10.12783/ISSN.1544-8053/14/1/22","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/22","url":null,"abstract":"In Northern China, heavy trucks are common on highways. Vehicles traveling on longitudinal sections of expressways produce higher carbon emissions. Current carbon emission models include the vehicular operating conditions, but do not reveal the influence of highway alignment conditions, such as the longitudinal gradient and slope length, on emissions. To address this problem, this study attempts to relate the design parameters of longitudinal roadway segments with carbon emissions, as derived from diesel fuel consumption data, using an iterative nonlinear multiple regression method. Diesel fuel consumption data were collected through field tests along two typical overloaded expressways in China’s coal-producing regions. The associated carbon emission data were calculated using the method defined by the Intergovernmental Panel on Climate Change. Using this data, a carbon emission prediction model was developed that related carbon emissions with roadway segment gradients, segment slope length, and initial vehicle speed. The proposed model was verified using the field test data. A relative error of 4.9% between predicted and observed data suggested high accuracy and applicability for the proposed prediction model.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"53 1","pages":"177-183"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84468609","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 : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/S1/21
Yongliang Liang, Kejun Li
The quality of original data is crucial to the performance of diagnosis model. To improve the performance of transformer diagnosis model based on Dissolved Gas Analysis (DGA), a new diagnosis scheme suitable for time-series dissolved gas data is proposed in this paper. After the analysis of traditional transformer diagnosis architecture, a fault data extraction step is added to the architecture to improve the quality of original fault data. The fault data extraction step is mainly composed of two parts, invalid data correction and determination of possible initial fault time based on fault early warning. Finally, the numerical results validate that the accuracy and sensitivity of DGA based fault diagnosis for the transformer are improved by extracting fault feature of time-series data.
{"title":"A New DGA Based Transformer Fault Diagnosis Scheme Suitable for Time-Series Fault Data","authors":"Yongliang Liang, Kejun Li","doi":"10.12783/ISSN.1544-8053/14/S1/21","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/S1/21","url":null,"abstract":"The quality of original data is crucial to the performance of diagnosis model. To improve the performance of transformer diagnosis model based on Dissolved Gas Analysis (DGA), a new diagnosis scheme suitable for time-series dissolved gas data is proposed in this paper. After the analysis of traditional transformer diagnosis architecture, a fault data extraction step is added to the architecture to improve the quality of original fault data. The fault data extraction step is mainly composed of two parts, invalid data correction and determination of possible initial fault time based on fault early warning. Finally, the numerical results validate that the accuracy and sensitivity of DGA based fault diagnosis for the transformer are improved by extracting fault feature of time-series data.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82031256","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 : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/12
Wang Jifen
To investigate the bacterial functional diversity regarding soil carbon metabolism in Sanjiang Plain wetlands, the top soils (0–20 cm) of three different land use types were collected in Sanjiang Plain, China. The distribution and variation of carbon source utilization was assessed by the Biolog microplate method. The results showed that the physicochemical properties of the soil were significantly different between the three land use types, wetland, farmland and forest (P 0.05). Principal component analysis (PCA) indicated that soil bacterial carbon utilization revealed obvious spatial variation, suggesting the bacterial metabolism diversity could be reflected in the use of carbohydrates, amino acids and carboxylic acids, particularly carbohydrates. In addition, soil physicochemical properties and vegetation composition were important factors modifying soil bacterial composition and functional activity in different land use types.
{"title":"Effects of Different Land Use on Soil Bacterial Functional Diversity in Sanjiang Plain, Northeast China","authors":"Wang Jifen","doi":"10.12783/ISSN.1544-8053/14/1/12","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/12","url":null,"abstract":"To investigate the bacterial functional diversity regarding soil carbon metabolism in Sanjiang Plain wetlands, the top soils (0–20 cm) of three different land use types were collected in Sanjiang Plain, China. The distribution and variation of carbon source utilization was assessed by the Biolog microplate method. The results showed that the physicochemical properties of the soil were significantly different between the three land use types, wetland, farmland and forest (P 0.05). Principal component analysis (PCA) indicated that soil bacterial carbon utilization revealed obvious spatial variation, suggesting the bacterial metabolism diversity could be reflected in the use of carbohydrates, amino acids and carboxylic acids, particularly carbohydrates. In addition, soil physicochemical properties and vegetation composition were important factors modifying soil bacterial composition and functional activity in different land use types.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"7 1","pages":"91-98"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83789507","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：