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The Application of Self-Potential Method on Top of Water Surface for the Detection of Karst Leakage Channel in the Morbid Reservoir
Chen Yixiang,
Wu Jiangqiang,
Huang Qibo,
Gan Fuping,
Han Kai,
Yang Chuchang,
Zheng Zhijie
Issue:
Volume 6, Issue 3, June 2018
Pages:
137-146
Received:
20 June 2018
Published:
22 June 2018
Abstract: As a result of karst development, water leakage from reservoirs and waste water leakage from mine tailings impoundments often occur in karst region of southwestem China. The geophysical prospecting methods commonly used in the investigation of karst leakage passage are mostly located in the dam, abutment and other land of the reservoir area, which are fail to detect and evaluate the karst collapse at the bottom of the reservoir directly. This will result that the effect of detection and governance are often poor. This paper takes the detection of karst leakage passage beside culvert of the first class hydropower station in Jinjihe reservoir in North Guangxi as an example, studying the principle, field working method and detection effect of detecting karst leakage passage in reservoir by self-potential method on the water. Outcropping formation in the study area mainly consist by the limestone clipped dolomite, dolomitic limestone of Devonian Liujiang formation (D3L) and dolomite, limestone, argillaceous limestone of the Devonian Donggangling order (D2d). The hidden karst is secondary development. That outlet pipe of the first class hydropower station in the district releases water can cause a strong negative center regional field of self-potential on the water. By dividing the regional field of self-potential on the water using the circumferential mean method and calculating the residual local anomaly separate 6 secondary negative center residual local anomaly of self-potential on the water covered by a strong regional field like an equiaxed or elliptical shape. After check in the reservoir by the diver, the 6 negative center residual local anomaly zone correspond to karst collapse, karst opening or leaking skylight at the bottom of the reservoir. Among them, the negative center residual local anomaly like an equiaxed shape near the survey points 46-48 of line 16 correspond to the largest karst collapse at the bottom of the reservoir. Through the simple connected experiment of internal and external water and the engineering geological drilling, the effect of geophysical anomaly detection is good. The self-potential method on the water can be used in the investigation of karst geological problems, such as the emergency on the water of the karst sick reservoir, and the rapid delineation of the range of the shallow karst leakage passage.
Abstract: As a result of karst development, water leakage from reservoirs and waste water leakage from mine tailings impoundments often occur in karst region of southwestem China. The geophysical prospecting methods commonly used in the investigation of karst leakage passage are mostly located in the dam, abutment and other land of the reservoir area, which ...
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Study on Electron Shuttle-Stimulating Bioenergy Extraction Using Medicinal Herbs
Jiahui Liao,
Chungchuan Hsueh,
Boryann Chen
Issue:
Volume 6, Issue 3, June 2018
Pages:
147-154
Received:
20 June 2018
Published:
22 June 2018
Abstract: Prior study proposed that extracts of edible flora might own electrochemical activities to act as electron shuttles (ESs), stimulating capabilities bioelectricity generation in microbial fuel cells (MFCs) at appropriate environmental conditions. However, applications of converting such electrochemical species (e.g., medicinal herbs and tea extracts) to be ESs for practical use still remained open for discussion. Thus, this first-attempt study disclosed critical conditions to manipulate ESs with stably reversible characteristics of electrochemistry from natural bioresources and provided quantitative assessment with practical values for biorefinery/bioenergy applications. According to total phenolics, antioxidant scavenging and power density analyses, Syzygium aromaticum owned the most promising electrochemical capabilitt to be electron shuttle (ES) to stimulate energy extraction. The findings indicated that antioxidant activities, total phenolic contents and electron shuttling-activities were all strongly electrochemically associated for sustainable uses. In addition, closed-loop area of redox potential profiles in cyclic voltammetry could quantitatively represent electrochemical activity of test medicinal herb for antioxidant and ES uses.
Abstract: Prior study proposed that extracts of edible flora might own electrochemical activities to act as electron shuttles (ESs), stimulating capabilities bioelectricity generation in microbial fuel cells (MFCs) at appropriate environmental conditions. However, applications of converting such electrochemical species (e.g., medicinal herbs and tea extracts...
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Deciphering Combined Interactions of Algae-Bacteria Co-Culture for Green Sustainable Applications
Minhao Chang,
Chungchuan Hsueh,
Jiahui Liao,
Boryann Chen
Issue:
Volume 6, Issue 3, June 2018
Pages:
155-163
Received:
22 June 2018
Published:
23 June 2018
Abstract: Microalgae contained abundant value compositions (e.g., antioxidant polyphenolics and flavonoids, proteins) and owned significant bioelectrochemical characteristics for sustainable applications. This study tended to decipher strategy to maximize generation of value-added products through testing of electrochemical capabilities (e.g., total polyphenolics content, DPPH antioxidant activities, cyclic voltammetry). Although extracellular metabolites of microalgae might express significant electrochemical activity as electron shuttles, such metabolites apparently still inhibited microbial activities, leading to significant reduction of power generation in microbial fuel cells with metabolite supplementation. This result clearly explained why slow-growing microalgae could propagate ubiquitously even microbes were grown in much faster rates. That is, combined interactions of microalgae-bacteria co-cultures evidently provided ecologically favorable conditions for microalgal persistence due to inhibitory metabolites expressed by microalgae in co-cultures.
Abstract: Microalgae contained abundant value compositions (e.g., antioxidant polyphenolics and flavonoids, proteins) and owned significant bioelectrochemical characteristics for sustainable applications. This study tended to decipher strategy to maximize generation of value-added products through testing of electrochemical capabilities (e.g., total polyphen...
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Research on Producing Pure Hydrogen by Chemical Chain Reaction Using Pyrolysis Gas from Agricultural Waste Based on NiO/NiAl2O4 Oxygen Carrier
Yang Luhan,
Chen Duotian,
Zhong Jianjun
Issue:
Volume 6, Issue 3, June 2018
Pages:
164-170
Received:
22 June 2018
Published:
23 June 2018
Abstract: China produces a large number of agricultural wastes annually, most of which are treated by incineration, and the utilization rate is very low. This paper had constructed a hydrogen production system for chemical chain of agricultural and forestry waste, focusing on the effects of loading capacity, promoter and baking temperature on the oxidation and catalytic performance of NiO/NiAl2O4 oxygen carrier and the characteristics of its reduction and physical properties. The results showed this oxygen carrier had good circulation ability. After many redox reactions, the output of H2 had no obvious attenuation, and NiO could be attached to the surface of NiAl2O4 effectively. Therefore, NiO/NiAl2O4 oxygen carrier had certain mechanical properties, not only the pore was fine, but also the gas flew through the chain cycle reaction completely. The research of this paper has important significance for high-grade utilization of agricultural and forestry waste, environmental protection, energy saving and emission reduction.
Abstract: China produces a large number of agricultural wastes annually, most of which are treated by incineration, and the utilization rate is very low. This paper had constructed a hydrogen production system for chemical chain of agricultural and forestry waste, focusing on the effects of loading capacity, promoter and baking temperature on the oxidation a...
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The Design of PTA Wastewater Reuse Project
Issue:
Volume 6, Issue 3, June 2018
Pages:
171-174
Received:
22 June 2018
Published:
23 June 2018
Abstract: Processing system design size of 1000m3/h reuse of PTA project, and its waste water is characterized by large amount of discharge, complexity of pollutants and high concentration of manganeseions. Using ultrafiltration and reverse osmosis treatment method, supplement finished water recirculating cooling water, with its considerable economic benefit and good environmental benefits.
Abstract: Processing system design size of 1000m3/h reuse of PTA project, and its waste water is characterized by large amount of discharge, complexity of pollutants and high concentration of manganeseions. Using ultrafiltration and reverse osmosis treatment method, supplement finished water recirculating cooling water, with its considerable economic benefit...
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Effect of Methyl Paraben on Sludge Reduction
Guo Wangqian,
Chen Tianhui
Issue:
Volume 6, Issue 3, June 2018
Pages:
175-183
Received:
22 June 2018
Published:
23 June 2018
Abstract: Activated sludge process is the most widely used sewage treatment technology, which accounts for more than 90% of urban sewage treatment processes and about 50% of industrial wastewater treatment processes. The essence of the activated sludge process is that microorganisms use the biodegradable organic matter in the sewage as nutrients for metabolism and meanwhile remove them, while large amounts of sludge would be generated inevitably during the sewage treatment process. The cost for the sludge treatment accounts for about 50% of the operating cost of the sewage treatment plant. In this study, the effects of uncoupler propyl paraben on sludge reduction and sewage treatment were conducted, and the results showed that the optimized concentration of propyl paraben for sludge reduction was 30 mg/l, which achieved 41% sludge reduction effect. Under the optimized propyl paraben concentration, the average removal rate of COD increased from 93.35% in the blank group to 94.53%; the average removal rate of NH4+-N increased from 65.47% in the blank group to 83.84%; the average removal rate of PO43--P from the 58.47% in the blank group increased to 67.36%; meanthile the sludge kept good settalbility during the sewage treatment process.
Abstract: Activated sludge process is the most widely used sewage treatment technology, which accounts for more than 90% of urban sewage treatment processes and about 50% of industrial wastewater treatment processes. The essence of the activated sludge process is that microorganisms use the biodegradable organic matter in the sewage as nutrients for metaboli...
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Study on Bridge Aging Based on Analytic Hierarchy Process
Jun Yang,
Hong Liang,
Jian Tian,
Qiaoling Tang
Issue:
Volume 6, Issue 3, June 2018
Pages:
184-188
Received:
26 June 2018
Published:
26 June 2018
Abstract: Aiming at the problems and needs of bridge detection and evaluation, based on AHP, this paper designs and establishes multi-level evaluation model and index system for bridge aging assessment. The judgement matrix of each class objective in index system is constructed, and determine the weight of the indicator based on the judgment matrix. Design expert scoring system and establish fuzzy membership matrix for bridge evaluation based on fuzzy comprehensive evaluation method. Then evaluate the degree of aging and calculate the overall score of the bridge according to the weights and membership matrix, so as to determine the health level of the bridge, and provide decision-making basis for the relevant departments to take bridge maintenance measures.
Abstract: Aiming at the problems and needs of bridge detection and evaluation, based on AHP, this paper designs and establishes multi-level evaluation model and index system for bridge aging assessment. The judgement matrix of each class objective in index system is constructed, and determine the weight of the indicator based on the judgment matrix. Design e...
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Study on Automatic Switching Protection of Optical with 3R Amplier Based on FPGA
Issue:
Volume 6, Issue 3, June 2018
Pages:
189-192
Received:
26 June 2018
Published:
26 June 2018
Abstract: In this paper, we research and develop a new type of optical fiber based on high-speed switching FPGA routing automatic protection switching device, its innovative USES high-speed electronic SWITCH high-speed exchange of FPGA design, will be 0 to 10g digital optical signal photoelectric conversion amplification and rearrangement of the equipment selected by the high speed switching FPGA SWITCH protection, can for any important 0 to 10 g optical signal circuit after transformation (1 + 1) send after protect rearrangement of amplification, adopt concurrent optimization of transmission mode, automatic selection of high quality circuit signal in the microsecond time complete electrical SWITCH (far superior to the traditional common optical SWITCH SWITCH time), based on the development of commercial products for the national grid ehv transmission network users with high reliability,high performance of 0 to 10 g optical signal transmission channel protection, its there is no insertion loss, does not affect the original light path, also used in long-distance optical network transmission protection system in the west and subvert the traditional light path switching apparatus for at least 2 ~ 5 DBM large insertion loss. It overcomes the disadvantage of the traditional optical switch protection device.
Abstract: In this paper, we research and develop a new type of optical fiber based on high-speed switching FPGA routing automatic protection switching device, its innovative USES high-speed electronic SWITCH high-speed exchange of FPGA design, will be 0 to 10g digital optical signal photoelectric conversion amplification and rearrangement of the equipment se...
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Adaptive Detector of Spare Range-spread Target Based on AR Model
Gu Xinfeng,
Xu Zhengfeng,
Yan Shuqiang,
Hao Xiaolin
Issue:
Volume 6, Issue 3, June 2018
Pages:
193-198
Received:
25 June 2018
Published:
26 June 2018
Abstract: The detecting of spare range-spread target is discussed in this paper based on the AR model of clutter. Compound-Gaussian clutter is modeled as the AR model, and a regressive approximate generalized likelihood ratio test detector based on scatter number (SN-RAGLRT-CG) is proposed. The probability false alarm of the detector is deduced. It does not need secondary range cells to estimating the parameters of clutter. The simulation results also show that the SN-RAGLRT-CG makes full use of the information scatterers and it improves the detection performance for spare scatterer targets of the detector.
Abstract: The detecting of spare range-spread target is discussed in this paper based on the AR model of clutter. Compound-Gaussian clutter is modeled as the AR model, and a regressive approximate generalized likelihood ratio test detector based on scatter number (SN-RAGLRT-CG) is proposed. The probability false alarm of the detector is deduced. It does not ...
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Research on the Reliability Evaluation of Transmission Line on-Line Monitoring Device Based on the Comprehensive Evaluation Method
He Ye,
Liu Bing,
Chen Chao,
Zhang LiHong,
Pan Bo,
Xiong Wei
Issue:
Volume 6, Issue 3, June 2018
Pages:
199-204
Received:
25 June 2018
Published:
26 June 2018
Abstract: In view of the reliability of the on-line monitoring device for transmission lines, this paper puts forward a comprehensive evaluation method combining the analytic hierarchy process and the fuzzy evaluation method, in order to realize the reliability evaluation of the on-line monitoring device for transmission lines. Firstly, the structure of reliability evaluation system, which is composed of environmental factors, installation factors, human factors and management level factors, is established. Then, based on the evaluation system, the reliability of the on-line monitoring device for transmission lines is evaluated by fuzzy evaluation. Finally, according to the principle of maximum membership, the reliability of an on-line monitoring device for a transmission line is judged. The results show that the comprehensive evaluation method can well reflect the reliability of the on-line monitoring device for transmission lines, and provides a theoretical and practical basis for the reliability evaluation of the on-line monitoring device for transmission lines.
Abstract: In view of the reliability of the on-line monitoring device for transmission lines, this paper puts forward a comprehensive evaluation method combining the analytic hierarchy process and the fuzzy evaluation method, in order to realize the reliability evaluation of the on-line monitoring device for transmission lines. Firstly, the structure of reli...
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Study on Magnetic Properties of Electric Magnetic Materials Under External Temperature
Jiang Wenyu,
Li Weiye,
Lou Jianyong,
Wu Shidong
Issue:
Volume 6, Issue 3, June 2018
Pages:
205-211
Received:
25 June 2018
Published:
26 June 2018
Abstract: For electrical manufacturers, with the development of the power industry, the demand for special electrical equipment, such as large capacity transformers and high temperature transformers, is becoming more and more. The magnetic properties of silicon lamination at different temperatures have a very important reference value for designers to design products that meet the relevant parameters. Firstly, this paper selects various brands of electrical silicon lamination, designs and makes different test samples. Secondly, this paper adopts the ring sample method of one dimension magnetic property measurement, and makes the measurement of the magnetic property parameters under different temperature conditions, obtains the related test data and the change of the magnetic characteristic parameters of test samples and uses data processing method to sort out the test data. Finally, this paper analyzes the reasons for the data. The results show that magnetic properties have certain regularity with the change of temperature, and the measurement method in this paper can serve for practical engineering.
Abstract: For electrical manufacturers, with the development of the power industry, the demand for special electrical equipment, such as large capacity transformers and high temperature transformers, is becoming more and more. The magnetic properties of silicon lamination at different temperatures have a very important reference value for designers to design...
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Investigation on the Impact of Differently Treated PM2.5 on Cell Viability of Human Bronchial Epithelial Cells (Beas-2b) and the Construction of Bio-Hazard Index
Yuanze Liu,
Qiaohui Zhang,
Peiyi Xu
Issue:
Volume 6, Issue 3, June 2018
Pages:
212-217
Received:
25 June 2018
Published:
26 June 2018
Abstract: After PM2.5 is inhaled by the human body, various pathogens such as influenza viruses, can cause many respiratory diseases, causing local clogging of the lungs and causing damage. At present, the research on the effect of PM2.5 on human bronchial epithelial cells (BEAS-2B) and the toxicity of the respiratory system only focuses on the single source PM2.5. The effects of different native PM2.5 on human bronchial epithelial cells (BEAS-2B) and the toxicity of the respiratory system have not been reported. In this paper, the effects of artificial PM2.5 graphene particles, sterilized atmospheric PM2.5 particles and unsterilized atmospheric PM2.5 particles on the viability of immortalized human bronchial epithelial cells (BEAS-2B) are investigated. The Bio-hazard Index describing the effects of PM2.5 on human respiratory health is constructed based on the change of BEAS-2B cell viability under different PM2.5 concentrations in the cell culture. The index can evaluate the pysiological impact of PM2.5 on the human body, and is more intuitive than the current AQI, which only discribes the physical concentration of PM2.5 in the air. The index thus provides a more accurate hazard prevention warning for susceptible population.
Abstract: After PM2.5 is inhaled by the human body, various pathogens such as influenza viruses, can cause many respiratory diseases, causing local clogging of the lungs and causing damage. At present, the research on the effect of PM2.5 on human bronchial epithelial cells (BEAS-2B) and the toxicity of the respiratory system only focuses on the single source...
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A Comparative Study on Adipose Tissue of Different Fat-Tailed Sheep
Ren Rui,
Cao Xin,
A Yimuguli,
Dai Hongwei,
Xu Hongwei,
Zang Rongxin
Issue:
Volume 6, Issue 3, June 2018
Pages:
218-223
Received:
27 June 2018
Published:
27 June 2018
Abstract: The aim is to understand the structure and composition characteristics of adipose tissue in different fat-tailed sheep, to lay a foundation for the study on the induced deposition of adipose tissue. The number of 6 for each eight-month-old Lanzhou big-tailed sheep, small-tailed Han sheep and Tibetan sheep wether have been selected for the slaughter experiment. Then, the subcutaneous, greater omental, perirenal and caudal fats have been collected for cell morphology studies, while the fat of Lanzhou big-tailed sheep and Tibetan sheep have selected to study composition and content of fatty acid. By comparison: for fat-tailed sheep, the fat is enriched in tail, subcutaneous tissue, and omentum, whereas for less fat-tailed sheep, the fat is enriched in viscera and subcutaneous tissue. The subcutaneous fat of fat-tailed sheep had early maturation, high degree of differentiation, and long growth phase of fat tail. For the less fat-tailed sheep, the subcutaneous fat and perirenal fat type have similar characteristics of differentiation and development, while the tail fat has early maturation. For Lanzhou big-tailed sheep and Tibetan sheep, their major fatty acids have similar characteristics of site distribution.
Abstract: The aim is to understand the structure and composition characteristics of adipose tissue in different fat-tailed sheep, to lay a foundation for the study on the induced deposition of adipose tissue. The number of 6 for each eight-month-old Lanzhou big-tailed sheep, small-tailed Han sheep and Tibetan sheep wether have been selected for the slaughter...
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