bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamic Imbibition Process Optimization for Ultra-low Permeability Sandstone Reservoirs
Authors: Jiang Min , Fan Hongfu , Zhang Yi , Wu Ying
Published: November 2019

Reservoir space of ultra-low permeability sandstone reservoir has complex and special physical properties. The development performance and effects of water flooding in ultra-low permeability sandstone reservoir are determined by the permeability effect. The physical model of imbibition oil recovery is an important experimental method to optimize the formula composition of imbibition system and imbibition technology. Through a lot of oil sands static imbibition experiments for H ultra-low permeability sandstone reservoir, three better imbibition agent systems are screened out. The dynamic imbibition oil recovery technology of the reservoir is optimized by using the core dynamic imbibition experiment and comparative experimental study.
Challenges and opportunities of coal-to-clean energy transition in China: a hard but long work
Authors: Wang Bing , Qin Tong , Hong Ge , Fan Wen-rong , Sun Zhen-Ming
Published: November 2019

Coal-to-clean energy transition is a significant strategy for China to protect the environment and achieve sustainable development. This research reviews the present policy framework, targeted sector for this energy consumption reform and discusses the supply status of natural gas industry. The conditions for efficiently implementing the coal-to-clean energy projects are explored by literature review and data mining. The decision to choose a proper implementation schedule depends on the factors of economic, environment, infrastructure, technology and resources endowment. The possible impacts of coal-to-clean energy transition actions on the society of China are analysed from the changes of energy mix, challenges from stable energy supply and measures for safeguarding energy security. The results of this study could be helpful for the successful implementation of this transition in the other areas.
Design of Cutting Depth of Artificial Dam of Underground Reservoir in Wulanmulun Mine
Authors: Kong Xiang-song , Fang Jie , Xu Zhuang-zhuang , Wang Shuan , Liu Shuai
Published: November 2019

Rich in coal and lack of water is a remarkable characteristic of mining area in western China. The water storage technology of underground reservoir has become an important means of water resources protection in mining area of western China, and the cutting depth of artificial dam plays an important role in the design of underground reservoir. In order to study the influence of cutting depth of artificial dam on the stability of underground reservoir, the MB-1 dam of No. 2 reservoir in Wulanmulun mine is selected as the research object. The 3D calculation model is established by using FLAC3D, and several calculation schemes are made by changing the cutting depth of side, roof and floor, respectively. Then the influence of cutting depth of artificial dam on the stability of mine underground reservoir is deeply analyzed from the aspects of displacement field and stress field. The results show that the optimum cutting depths of MB-1 artificial dam in side, roof and floor are 0.6m, 0.5m and 0.4m, respectively.
Shape Coefficient Study of The Extended End-plate Connections Base on Three Parameters Power Model
Authors: Liu Wei
Published: November 2019

Based on the three parameter power model, the finite element models of the extended end-plate semi-rigid connections are established by using FEA software ANSYS10.0, and the moment-rotation curve of the semi-rigid connections are obtained. By fitting the moment-rotation curve with numerical analysis method, two approximate formulas for calculating the shape coefficient of semi-rigid connections are obtained, and compared with the existing experimental data. The results shows that semi-rigid connections M-θ curves obtained by the fitted formula of shape coefficient are in consistent with the M-θ curve of FEA model and experimental data, which is based on the three parameter power model. The correctness and applicability of the approximate formula of shape coefficient are confirmed, and provides the theoretical basis for the design method of semi-rigid connections in practical engineering.
Study on the Layout and Influence of Offshore Structures in Macao Waters of Pearl River Estuary
Authors: Xu Wei , Wang Hua , Liu Guozhen , Huang Pengfei , Ye Ronghui
Published: November 2019

The coastal area is the area where human activities are most frequent. Coastal waters provide rich resources for the development of human society. The current in coastal waters is affected by shoreline, buildings in water and tidal current. The scientific location of buildings in water is of great scientific and practical significance for the sustainable development and utilization of coastal zones. In this paper, the Jiu’ao Bay is taken as the object, and mathematical and physical models are used to simulate the influence of hydrodynamic force and water exchange capacity caused by different locations of intake. The simulation results show that after the construction of the water intake, the water flow is squeezed by the water intake, and the water flow is forced to deflect eastward, while the west side water flow is deflected to the south. The flow diversion of the rising tide is advanced, and the flow convergence of the falling tide is delayed. As a result, the water exchange capacity in Jiu’ao Bay is reduced. Compared with Scheme 1, the location of Scheme 2 is less hydrodynamic, so the impact is less.
Study on the Inventory of Air Pollutants in Ports of Beijing-Tianjin-Hebei Region
Authors: Zhang Fan
Published: November 2019

According to the 2014 national transportation statistics compilation, the throughput and port machinery classification data of the port-based cargo types in the Beijing-Tianjin-Hebei region in 2014 were obtained. Based on the relevant research results, the calculation methods and related parameters of port heavy trucks, other port machinery, unorganized emissions of particulate matter, and unorganized emissions of VOCs were determined. To calculate the list of atmospheric pollutants in the Beijing-Tianjin-Hebei regional port in 2014, The emissions of SO2, NOx, PM10, PM2.5, VOCs and CO from Tianjin Port, Qinhuangdao Port, Huanghua Port and Tangshan Port were 260.6t, 3784.5t, 2524.1t, 2376.4t, 986.6t and 3068.9t respectively. Combined with the overall planning and layout plan of the Beijing-Tianjin-Hebei Port, the GIS technology was used to grid the inventory data to obtain a spatialized list with a resolution of 3km×3km. To further study the differences in emissions of different pollutants in different ports and the distribution of air pollutant emissions in the port to laid a scientific data foundation.
Study on the Thermal Expansion Performance of Gypsum in the Application of Precision Casting
Authors: Zhang Ye , Zhang Jixiu , Miao Yuanchao , Duan Saihong
Published: November 2019

Gypsum is a very important cementitious material in gypsum-based precision casting. The thermal expansion characteristics of gypsum have great influence on the adjustment of gypsum type precision casting powder formula. In this paper, the thermal expansion properties of different gypsums such as β-gypsum, natural gypsum-based α-gypsum, desulfurization gypsum-based α-gypsum, and the influence of temperature, heating rate/heating mode on the thermal expansion properties of α-gypsum are studied, which can provide references for the application of gypsum in the precision casting.
Study of shear strength of silty clay under freeze-thaw cycle
Authors: Lv Yan , Wang Haoxu , Gu Chengke
Published: November 2019

Silty clay is a common subgrade soil with a wide distribution in northeast China. The construction in the seasonal frozen area of silty clay in northeast China has become the norm. In the engineering construction, the shear strength characteristics of silty clay under different water content, different freezing temperatures and different cycle times of freeze-thaw should be considered. Based on the study of remolded silty clay, cohesion and internal friction angle are used as the shear strength indexes, and the influence of water content, freezing temperature and cycle time of freeze-thaw on the shear strength is analyzed by combining with the Gray Theory. The results show that the grey correlation degree of water content, freezing temperature and cycle time of freeze-thaw to cohesion is 0.97, 0.47 and 0.47, and to internal friction angle is 0.95, 0.45, 0.47, the water content towards cohesion and internal friction angle are linear negative correlation, freezing temperature has a best valuable impact on the shear strength, cycle time of freeze-thaw towards cohesion is linear positive correlation, and has little relationship with the internal friction angle.
Evaluation of lead(II) biosorption kinetics and isotherms from aqueous solution with dry Myriophyllum spicatum powder
Authors: Yi Zhengji , Liu Jian , Liu Xing , Zeng Rongying , Long Jiumei
Published: November 2019

Lead as an important element used by mankind for years is highly toxic in water and regarded as a long-standing environmental contaminant. In our research, biouptake of lead(II) from simulated wastewater by Myriophyllum spicatum was examined via batch tests. Impacts of pH, adsorption time and initial Pb(II) level on its biosorption process were examined. The best pH favorable to Pb(II) adsorption was equal to 6. The Pb(II) biosorption reached equilibrium after 50 min. Langmuir and Freundlich adsorption isotherm models were used to analyze the adsorption data, indicating that the former could describe the Pb(II) biosorption with the maximum biosorption capacity of 34.13 mg/g. The Pb(II) biosorption kinetics was analyzed by pseudo-second-order and pseudo-first-order equations. It was found that Pb(II) biosorption may be described by pseudo-second-order kinetic equation. The results suggested that M. spicatum powder may be utilized as an efficient biosorbent to eliminate Pb(II) from aqueous effluent.
Analysis on Damage Mode of Armor-piercing Projectile to Soil Target
Authors: Zhang Yuling , Zhen Jianwei , Liu Guoqing
Published: November 2019

Aiming at the reliability problem of armor-piercing projectile acting on soil target, experimental research and numerical simulation were carried out. The damage modes of armor-piercing projectile to soil target under different conditions were analyzed, and the characteristics of metal jet penetrating soil were studied. The results indicate that, there is a problem of reliability of fuse action in penetrating soil targets, if the soil strength is enough, the projectile will immediately explode and form metal jet when it touches the soil, if the soil strength is insufficient, the armor-piercing projectile will penetrate the soil, when the reaction force is enough, the armor-piercing projectile will explode and form metal jet, otherwise the armor-piercing projectile cannot explode, but the projectile will cause penetration damage to the soil.
Study on Synthesis Process of Ni-Pt/γ-Al2O3 Catalyst for Biodiesel Production from Waste Oil
Authors: Miao Yu , Guizhou Gu , Yu Teng , Rong Yang , Xiaoyu Liu , Lidong Xu , Zheng Li
Published: November 2019

Ni-Pt/γ-Al2O3 catalyst was prepared by step impregnation method with waste oil as raw material and Ni-Pt/γ-Al2O3 as carrier. Results showed that the waste oil used by catalytic hydrogenation of Ni-Pt the best preparation technology of Al2O?3 catalyst for calcination temperature was 450 °C, the roasting time was 4 h, Ni/Pt ratio of 1:1, and the corresponding biological diesel oil production rate was 81.5%. A biodiesel yield of the regenerated catalyst was low and decreased with the increase of regeneration times. This process can improve the added value of gutter oil and provide experimental basis for the production of diesel distillate from waste oil.
Visualization Analysis for Aqueduct Researches Based on CiteSpace
Authors: Gong Li , Wang Zhonghui , Lu Yekun , Kang Chuntao
Published: November 2019

In order to learn the aqueduct researches situation in China, we analyze the published literature about aqueduct from 1988 to 2017 in the CNKI database, and process on the CiteSpace visual analysis software. The scientific knowledge maps are obtained to tease out the changes of the literature about aqueduct researches, the cooperation relationship between authors and the institutions, and the keywords about hot spots. They visually reflect the complex relationships among the knowledge groups of aqueduct researches, such as network, structure and crossover, and clarify the current research situation and development trend of aqueduct researches. This study indicates that there are relatively few research literature about aqueduct; The number of authors researching on aqueduct is large, but the number of prolific ones is relatively small. Meanwhile, the collaboration between authors is relatively dispersive, since it does not form close relation. The distribution of research institutions is centralized which is not beneficial to mutual cooperation between research institutions and research institutions. The analysis of keywords shows that the researches about aqueduct are mainly in the aspects of internal stress, external stress, structure and construction technology.
Study on the characteristics of compressive strength and hydration mechanism of high-water-content materials modified by furnace slag and silica fume
Authors: Zhang Lianwei , Liu Changwu , Wu Fan , Lu Yonghu , Zhou Xianliang
Published: November 2019

In order to reduce the economic cost of high-water-content materials used in mine filling and improve the resource utilization rate of furnace slag and silica fume, furnace slag and silica fume were mixed into high-water-content materials by the admixture method. The variation law of compressive strength, hydration mechanism and microstructure were analyzed. When the furnace slag content is 10%, the compressive strength of high-water-content materials modified with furnace slag is consistent with that of pure high-water-content materials. When the silica fume content is 10% and 20% respectively, the compressive strength of high-water-content materials modified with silica fume increases by 8.54% and 3.66% respectively compared with pure high-water-content materials. When the furnace slag content is 30%, SiO2 in slag snatches Ca2+ and OH—from the solution to form a large amount of c-s-h gel, and the insufficient Ca2+ greatly hinders the formation of AFt crystals. When the silica fume content is 40%, the diffraction peak of AFt crystals cannot be observed in the diffraction pattern, which further indicates that the content of AFt crystals is an important factor affecting the compressive strength of high-water-content materials. When the content of slag and silica fume is low, AFt crystals are mostly in fine needle shape, the overall structure is uniform and dense. When the content of furnace slag and silica fume is high, AFt crystals are mostly of coarse columnar shape, and the overlapping mode becomes sparse and chaotic, and the dense degree of structure is seriously reduced.
Optimization of the epoxy resin water dispersion for modification of the RAP cold recycled mixes
Authors: Liu Tingguo , Shi Jicun , Busel Aliaksey , Zhang Qing , Busel Dmitry , Veranko Uladzimir , Zankavich Vitali , Shang Bo , Li Zhongyu , Wang Junxiong , Yin Tingjun , Han Zhiyu
Published: November 2019

This article presents the results of studies to optimize the composition of water dispersion of epoxy resin for the modification of RAP cold recycled mixes. The resulting water dispersion is easily combined with the bitumen emulsion and can be easily applied in the preparation of cold mixes. This kind of modification will significantly improve their reliability and durability and to closer in magnitude to the properties of hot asphalt concrete widely used for the construct of road pavements. In order to improve the efficiency of the modification process, the process of emulsification of epoxy oligomers in the presence of nonionic surfactants and further application of the obtained dispersions as a component of bitumen emulsions used for the preparation of RAP cold recycled mixes is justified. This kind of integrated approach to the selection of the composition of water dispersion of epoxy resin provided a higher level of its interaction in the formation of elastic and viscous bonds of increased strength in the formation of the structure of composites based on asphalt, bitumen emulsions and cement.
Study on Rheological Properties of BRA Modified Asphalt
Authors: Zhou Zhihai
Published: November 2019

Different amounts of BRA modified asphalt was prepared and evaluated for road performance. The basic indexes of different BRA was studied, including: penetration, ductility, softening point and viscosity. The viscosity-temperature characteristics of BRA were studied by Brookfield rotational viscosity test. The high temperature and low temperature rheological properties of BRA was studied by dynamic shear rheological test (DSR) and low temperature bending beam rheological test (BBR). The results show that the penetration of asphalt modified by BRA is decreased, but the softening point and viscosity are improved. BRA could significantly improve the viscosity of asphalt and maintain good construction workability. The rutting factor of BRA is larger than matrix asphalt and asphalt cement. The PG high temperature grade of unaged BRA is higher than that of RTFOT aging. BRA will reduce the low temperature performance of asphalt binder, but it has little effect on asphalt cement.
Study on quantification method for aggregate gradation of discrete Cemented Sand Gravel and Rock
Authors: Feng Wei , Jia Jinsheng , Liu Zhongwei , Wang Yang
Published: November 2019

As a new damming technique, Cemented sand gravel and rock damming technique could fill the gap between the earth-rock dam and the concrete dam in material and improve the construction system. The largest characteristic of this material is that it directly adopts the aggregates in the engineering field and only aggregates with a particle size above 150 mm are screened. The aggregate gradation is discrete and fluctuating, so it is significant to study the methods of quantization and characterization of aggregate grading. Based on Fuller curve, this paper quantified the variation and dispersion of aggregate gradation via using similarity coefficient of aggregate gradation, average similarity coefficient, mean average similarity coefficient and standard deviation of similarity coefficient, which has provided significant guidance for the real practice. Relevant quantization methods not only assist to differentiate the grading boundary including the thinnest and roughest graded aggregate, but also master the grading changes and predict the dispersion degree of strength of Cemented sand gravel and rock from the dispersion degree of aggregate, which could provide a scientific reference for the mixing design of Cemented sand gravel and rock
Study on Test and Ratio Optimization of Waste Rock-Fly Ash Aggregate Filling Slurry
Authors: Yang Xiaobing , Li Litao , Gao Qian
Published: November 2019

To obtain the optimum proportion of fly ash alternative for preparing filling slurry instead of waste rock, the effect of fly ash dosage on the filling body strength is predicted by utilizing BP neural network model on the basis of experimenting the particle size distribution, filling body strength and slurry working characteristics of waste rock-fly ash binary aggregate system under various fly ash dosages. As the results revealed, the waste rock-fly ash binary mixture system attains the densest accumulation when the fly ash dosage is 30%. At this point, the compressive strengths at all ages reach the maximum, according to the BP neural network model predictions. The minimum cost for preparing filling slurry is obtained to be 121 yuan/m3 based on the cost optimization model. At this time, the fly ash dosage is 26%, the cementitious material consumption is 286 kg/m3, the slurry concentration is 81%, the 3d strength is 1.26 MPa, the 7d strength is 1.52 MPa, the 28d strength is 5 MPa, the expansion degree is 51.4 cm, and the bleeding rate 5.7%. Both the filling body strength and slurry fluidity conform to the requirements, while the fly ash dosage is almost identical to that obtained from the particle size distribution and filling body strength tests.
Determination of T-2 toxin by chemiluminescence enzyme immunoassay
Authors: Lei Shuijuan , Liu Renrong , Zhu Lixin , Jin Yu , Li Min , Qiu Xiaoyan
Published: November 2019

T-2 toxin is a mycotoxin that is harmful to humans and animals. Chemiluminescence enzyme-linked immunosorbent assay (CLEIA) was established for the detection of T-2 toxin. In this study, the antigen coated concentration, antibody dilution proportion, goat anti-mouse IgG-HRP dilution proportion, the concentration of organic solvents, pH value and ionic concentration of the buffer were optimized to obtain the best reaction condition. The experiment have drawn the following conclusions, the 50% inhibitory concentration (IC50) of CLEIA was 0.94ng/ml. The standard was added 1.25ng∼5ng to wheat flour and added 1ng∼5ng to corn flour. The recovery ratios were 83%∼87% and 86%∼107%, the relative standard deviations (RSD) were 3%∼10% and 2 %∼6%, respectively.
Effects of different rootstocks grafting on potassium absorption in post generations of Cyphomandra betacea seedlings
Authors: Liu Piao , Wang Xun , Liao Ming’an , Lin Lijin
Published: November 2019

The pot experiments were conducted to study the effects of Solanum nigrum, tomato and eggplant as rootstocks on potassium contents in post generations of Cyphomandra betacea seedlings. The results showed that the potassium content of grafted generations of S. nigrum as rootstock was significantly higher than that of ungrafted generations, which increased by 85%, 6.4%, 7.5% and 5.5%, respectively. The potassium content of each part of grafted generations of C. betacea seedling by tomato and eggplant rootstock was lower than that of ungrafted generations. The content of available phosphorus and potassium in soil after grafting treatment was significantly higher than that of control, which was 1.11 times and 1.13 times respectively. Therefore, grafting on rootstocks of S. nigrum was more conducive to potassium absorption in post generations of C. betacea seedling.
The selenium accumulation characteristics of grape seedlings
Authors: Liu Lei , Wang Ting , Sui Liyun , Liu Ji , Lin Lijin , Liao Ming’an
Published: November 2019

To study the selenium accumulation characteristics of fruit tree, different selenium concentrations (0.00, 0.05, 0.10, 0.25, 0.50, 1.00, 2.00 mg/L) were used on the grape seedlings, and the selenium accumulation characteristics of grape seedlings were studied by a pot experiment. With the increase of selenium concentration in culture medium, the biomass of grape seedlings had increase trend when the culture medium selenium was no more than 0.05 mg/L, and decreased when the culture medium selenium was exceeded than 0.05 mg/L. When the culture medium selenium was 0.05 mg/L, the biomass of grape seedlings got the maximum. For selenium content in plants, with the increase of selenium concentration in culture medium, the selenium contents in roots and shoots of grape seedlings increased. Therefore, lower selenium concentration in culture medium could promote the growth of grape seedlings, while higher selenium concentration inhibited, and grape seedlings had strong selenium uptake ability.
Synthesis and properties of the IA/AMPS copolymer
Authors: Liu Zhan , Yan Meifang , Liu Zhenfa , Li Na
Published: November 2019

Based on itaconic acid(IA) and 2-acrylamido-2-methyl propane sulfonic acid(AMPS) as raw material, the IA/AMPS copolymer was preparaed. The scale inhibition of copolymer was studied under different experimental conditions. The optimum conditions of synthesis of IA/AMPS were obtained: the raw material quality ratio was IA:AMPS=5:1; the addition amount of ammonium persulfate as the initiator was 5% of the total mass of the monomer; the polymerization temperature was 95°C; the time of epoxidation was 4 h. Under this condition, the scale inhibition rate on CaCO3 was 100% when the IA/AMPS copolymer was 10mg⋅L−1. The scale inhibition rate on Ca3(PO4)2 was 100% when the IA/AMPS copolymer was 30mg⋅L−1. The light transmittance of the supernatant after the dispersion of Fe2O3 was 25%, indicating that the copolymer obtained under this experimental condition has good scale inhibition and dispersion performance.
Extraction of Quercetin from Avocado Meal and Its Antioxidant Activity
Authors: Feng Xuehua , Tao Ali , Song Zurong
Published: November 2019

Response surface methodology (RSM) was used to optimize the extraction process of quercetin from pear meal and to investigate its antioxidant capacity. The solvent ratio, ultrasonic power and extraction time were taken as independent variables, and the percentage of quercetin was taken as dependent variable. Through multiple linear regression and binomial fitting of each level of independent variable, the better extraction process was selected by response surface methodology and predicted and analyzed. The antioxidant activity of quercetin was evaluated by scavenging 1.1-diphenylpicrylphenylhydrazine free radical (DPPH.) and reducing ability of iron ions (FRAP). The optimum extraction process was obtained as follows: the ratio of liquid to material was 35 mL/g, the ultrasonic power was 550 W, and the extraction time was 30 min. The content of quercetin was 1.585%. Quercetin in avocado meal has strong DPPH scavenging and iron ion reduction ability. When the concentration is 30 mg/mL, DPPH scavenging rate reaches 70%, and iron ion reduction ability almost equals 6 mmol/L FeSO4 concentration, and has a dose-effect relationship.
Study on the best extraction technology of total flavonoids from Piper sarmentosum Roxb. leaves and evaluation of antioxidant activity
Authors: Wei Changbin , Li Jiaxu , Ma Zhiling , Qiao Jian , Zhao Weifeng , Liu Yuge
Published: November 2019

This paper investigated the best extraction process of total flavonoids from Piper sarmentosum Roxb. leaves. The optimal extraction solvent was first determined to be ethanol, and then the effects of ethanol concentration, extraction temperature, extraction time and the ratio of liquid to solid on the extraction yield of total flavonoids were determined by single factor method. Based on the above experiments, the orthogonal experimental design of three factors and three levels was established. The best extraction conditions of total flavonoids from Piper sarmentosum Roxb. leaves were concluded: extraction time 1.5h, liquid-solid ratio 175:1, ethanol concentration 75%, extraction time 1.5h, and the effect of solid-liquid ratio was greater than that of ethanol concentration, and the effect of ethanol concentration was greater than that of time. Furthermore, the antioxidant properties of total flavonoids were also determined from P. sarmentosum leaves in the regions of Suixi, Lianjiang, and Cunjin based on the DPPH, FRAP and MCC methods.
Study on the Metabolism of Sesamin to Ethanol and the Preparation of Sesamin Microcapsules
Authors: Ren Xiue , Zeng Shuyi , Xie Xiuxiu , Zhu Kemin , Chen Xiuhua
Published: November 2019

Hydroxyl radicals were obtained by simulating ethanol metabolism in vitro. The absorbance of sesamin was measured by reacting with sesamin solutions of different concentrations. The ability of sesamin sample to scavenge hydroxyl radicals decreased with the increase of dilution ratio in a certain range. A comparative experiment between sesamin and water was designed to verify that sesamin has a significant promoting effect on alcohol dehydrogenase (ADH). The results showed that sesamin could promote the metabolism of ethanol. It indicated that the sesamin can dispel alcohol and protect the liver. In addition, the sesamin was encapsulated by the coacervation method to optimize the preparation method of sesamin microcapsules, which laid a foundation for the practical application of sesamin.
Study on Income Distribution Model of Container Multimodal Transport
Authors: Meng Xiangru
Published: November 2019

The income distribution scheme is the premise of the smooth operation of enterprise alliance of container multimodal transportation. The goal of multimodal transport is to better integrate the various modes of transport organization and provide convenient transport services. The alliance enterprise puts forward the distribution scheme of self-interest from the point of view of maximizing its own income, while the multimodal transport operator guides the member enterprises to choose and modify the scheme, so that the distribution scheme can be accepted by all members. This paper analyzes the main body of income distribution on container multimodal transportation,and analyzes the principles of cooperative game income distribution,and puts forward two modes of income distribution on container multimodal transportation, and finally puts forward the distribution income scheme of container multimodal transportation.
Research on Distribution Center Layout Based on SLP
Authors: Bai Yan
Published: November 2019

Distribution is an important part of logistics. Scientific planning distribution center can not only improve the efficiency of distribution, but also reduce the cost of logistics. The paper adopts the method of SLP to carry out scientific and reasonable layout planning and construction the distribution center. Combining the case analysis, the feasible optimal solution is finally obtained after exploring all the links.
The application of the Gas Insulated Transmission Lines in Electric Power Engineering
Authors: Yuyuan Huang , Wei Zong , Fei Yuan
Published: November 2019

In order to adapt to the special requirement of the laying of lines and the requirement of long-distance transmission, GIL develops fast. This paper introduces GIL from the aspect of feature, advantages, disadvantages and the typical construction. And this paper prospects the development of GIL.
Application of fuzzy control in power recovery testing of hydraulic pump and motor
Authors: Yang Jiachen , Jin Xiajie
Published: November 2019

In order to realize the test purpose of high pressure and large displacement hydraulic pump and hydraulic motor, this paper designs a power recovery test system using fuzzy controller, and explains the working principle of the system. Through the theoretical calculation of its power recovery rate, this paper proposes how to maintain the maximum power recovery rate of the test system. Finally, the feasibility of the system was verified by theoretical simulation and experiments.
Simulation based on the Gompertz Curve Model to Assess Early Systematic and Mechanical BEEMS Failures
Authors: Tanaka Takehiro
Published: November 2019

The purpose of this study is to introduce the simulation procedure for assessing early systematic and mechanical failures of the Building, Environment and Energy Management System (BEEMS) to prevent the newly-installed system from incurring major damage, troubles and risks. Here, the Gompertz curve model is simulated using the unit of measurement called “mean time between failures (MTBF)” to evaluate failure rates. The research focuses are placed on the types of facilities and devices, the number of failure cases, the Mean Time Between Failures (MTBF), estimations on the basis of the Weibull analysis, the Bayesian method and the Gompertz curve model. Especially, it was confirmed to be effective to use the Gompertz curve model together with the Bayesian method for data of 20 failures or less. And the Gompertz curve model would be appropriate for the estimation of a regular inspection period more precisely under several assumptions based on a limited number of data as its lower limit of probability could deliver some margin for safety.
Research on Financial Post-Evaluation of Power Grid Project under the Background of Transmission and Distribution Electricity Price Reform
Authors: Yang Zhilong , Liu Yamin , Xu Qinghua , Shi Xiaokun , Liu Hang
Published: November 2019

With the orderly advancement of the new round of electricity reform, China’s electric power industry and market will enter a new stage of development. Against this background, on the basis of the traditional “stable growth to meet the demand and supply”, the power grid enterprises should pay more attention to objective and effective evaluation of power grid operation. This paper follows the idea of calculating the internal revenue per unit of electricity, to make the financial post-evaluation of investment projects, and to provide reasonable guidance for future investment while evaluating the efficiency of past investment. On the basis of ensuring the reliability and safety of investment projects, good economic benefits can be obtained.
Experimental Study on Axial Pressure Stability Bearing Capacity of Transmission Tower Composite Rod of Circular Section
Authors: Hai-jun Xing , Zheng Li , Binrong Zhu , Zifu Zhang , Jing Wu , Xinwei Wang , Haifeng Liu
Published: November 2019

In order to further popularize the application of glass fiber reinforced resin matrix composite material in transmission tower, the axial compression bearing capacity test of two cross-section types of composite material rods, including solid round mandrel and hollow round pipe, was carried out, which provided data reserve for the standardization of calculation formula of axial compression bearing capacity of composite material rod. In this paper, the applicability and influence factors of Euler formula and yield criterion stability calculation method were analyzed, the test data were fitted, and the value of the key coefficient in the calculation formula of the axial pressure stability coefficient of composite material compression bar of circular section was proposed, which provided support for the standardization of the calculation method of the bearing capacity of composite material compression bar for transmission tower.
Design and Full-scale Test for ZC3 Tangent Tower of ±1100kV UHVDC Transmission Line
Authors: Zhang Zifu , Geng Jingdu , Li Qinghua , Xing Haijun , Wu Guoqiang , Liu Yaduo
Published: November 2019

The 300mm single limb large size angle steels are applied in ZC3 tangent tower of ±1100kV UHVDC transmission line, and the highest strength of large size angle steels is Q420. Through the optimization design on the new type node of the arm main member and the tower body, the tower’s weight is reduced evidently. Economic analysis results show: Weight of the ZC3 tower which main member applies the 300mm large size angle steel is 5%-8% higher than that of the steel tube tower, 4%-11% lower than that of the combination angle steel tower. The success of full-scale test verified the reliability in design and manufacture of the towers of ±1100kV transmission line. Research results of this paper can be applied in UHVDC transmission line projects.
Application of improved symmetric incremental learning algorithm in glass defect classification
Authors: Lian Xun
Published: November 2019

This paper focuses on the application and development of image recognition technology in glass defect detection industry, and studies the basic theory and implementation method of support vector machine. Aiming at the main shortcomings of incremental learning algorithm in current support vector machines, an improved symmetric incremental learning algorithm (S-ISVM) is designed. Support vector machines are selected as training tools and classification tools, and the training samples and test samples are used as prediction samples respectively. The feasibility of the algorithm and the correctness and validity of data processing methods are verified. The research results have broad prospects for development and practical value in the field of glass industry production.
Which incentive instruments do well for expansing the installed capacity of wind power: the empirical study in China
Authors: Yalin Chen , Qianqian Yu , Xizi Wang , Jiaojiao Liu , Zimeng Bai
Published: November 2019

China has made significant progress in pursuing its wind power policy in terms of cumulative installed capacity. This study investigated the effects of different incentive policies on the expansion installed capacity of wind power. Local planning support, cost allocation, concessionary tendering system and benchmark pricing are selected as policy variables and the individual fixed-effects model is applied to perform a quantitative analysis given the characteristics of the data series. Empirical results indicate that the effects of cost allocation, benchmark price and local planning support are decreasing gradually. We also find that concessionary tendering has no evident impact on the increase in installed capacity. This investigation on incentive policies provided evidence to further the design of an incentive mechanism that can optimize the supply structure of energy.
Selection and Evaluation of Several BC2F2 Rice Accession Tolerance to Submergence Stress and Backcrossing to Local Parent
Authors: Hasmeda Mery , Halimi Entis S. , Hamidson Harman , Guswari Rizky Yudhan
Published: November 2019

This study aimed to conduct selection process upon the four accessions of BC2F2 rice genotypes which were tolerant to submergence stress during vegetative stage. The selected plants were crossed with local parents. Local parents which were used in this experiment consisted of Payak Silembuk, Siam, Pegagan, and Pelita Rampak. BC2F2 Accession (BC2F2Py.Silembuk, BC2F2Siam, BC2F2Pegagan, and BC2F2P.Rampak) were evaluated before and after submerging process. The data obtained was analyzed with the Least Significant Difference (LSD) formula. The results showed that BC2F2Py.Silembuk accession had better tolerance compared to the rest of accessions being observed. Hence, this study concluded that the accession of BC2F2Py.Silembuk shows the best performance among the others of BC2F2 accesions. The result of back crossing to local parent, accession of BC2F2Py.Silembuk gave the best result.
Yield test of 13 accession groups of Yam (Dioscorea alata L.) on three various agroecology
Authors: Wuryantoro  , Wardhani R Mustika , Puspitawati I Rekyani
Published: November 2019

The Yam (Dioscorea alata L.) as one of the varieties of the “uwi” plant has the potential to support food diversity and food security in the future. This plant is very tolerant to be planted on dry land which in Indonesia is abundant even in the world. The purpose of this study was to obtain alternative types of non-rice food from Uwi, starting with the identification of the variation and multilocation yield test to see the adaptation of each accession were obtained at various upland agro-system, Cluster analysis on plant diversity based on tuber morphological properties obtained 13 groups with 80% similarity level. While the results of adaptation tests indicate that Yam generally can adapt to various agro-ecological, but only a few accession can grow well under teak stands, especially those with large trunks and tubers. The best yield is in the upland of highlands of the Ponorogo region, followed by the lowlands of Madiun and the lowest under teak stands. However, certain types can adapt to a broad spectrum of agroecology.
Biology of Eocanthecona furcellata (Wolff) (Hemiptera: Pentatomidae) Predator Nettle Caterpillar Setora nitens Walker Origin from Riau
Authors: Rustam Rusli , Herman  , Abdul Gani Muhammad
Published: November 2019

The growing prospect of crude palm oil (CPO) has led to rapid development of oil palm plantations in Riau. Oil palm cultivation is somehow inseparable from the attack of Netter Caterpillar. In practice, the control measures taken are usually by using synthetic insecticides. In order to reduce the effects of synthetic insecticides, it requires alternatives in the technique of controlling this caterpillar pest such as the use of Eocanthecona furcellata predators. This research aims to obtain biochemical data on Eocanthecona furcellata from Riau as predator of Netter Caterpillar pest on palm oil plants with alternative prey of Oecophylla smaragdina (Kroto) larvae. This research uses observation method where the growth and development of 100 larvae of Eocanthecona furcellata with prey of Oecophylla smaragdina (Kroto) broods were observed in the laboratory. The results showed that Eocanthecona furcellata fecundity is 134.88 eggs/female imago, hatch percentage of 82.93%. The life cycle of Eocanthecona furcellata passes through 5 instars with first nymphal instar period of 4.08 days, second-instar of 3.42 days, third-instar of 2.97 days, fourth-instar of 3.06 and fifth-instar of 5.25 days. The life cycle of female imago is longer than the life cycle of male imago, which is 37.41 days and 35.22 days. Oecophylla smaragdina (Kroto) larvae can be used for alternative prey in Eocanthecona furcellata predator multiplication.
Testosterone level and mating capability of male rabbit fed commercial feed substituted with moringa oleifera leaf meal
Authors: Suarni N M R , Oka I G L , Mahardika I G , Suyadnya I P
Published: November 2019

Rabbit is an alternative livestock that have a chance of being the source of healthy and high quality animal protein. One way to improve the productivity of rabbit meat is to improve the quality of male rabbits. Moringa leaves have androgenic effects by increasing testosterone, increasing blood flow to the male reproductive organs and stimulating the central nervous system to increase libido. The aims of this study were to find out the effects of moringa leaf meal substitution in commercial feed on the testosterone levels and mating capability of male rabbits. Twenty four of four months old male rabbits with an average live weight of 1200g were used in this study. There were four treatments in this study including 0% (K0) as control and 15% (K1), 30% (K2), 45% (K3) substitution of moringa leaf meal in commercial feed and each treatment consisted of six replicates. The treatments were carried out for two months. The variables measured were mating capability and testosterone levels in the blood. The results showed that there were significant differences (P <0.05) between all treatments (K1, K2, K3) and the control (K0). Substitution of commercial feed with moringa leaf meal in this study was able to increase the testosterone levels in the blood and mating capability of male rabbits. It was concluded that the moringa leaf meal able to substitute the commercial feed up to 45 % to improve the testosterone levels in the blood and mating capability of male rabbits. To get maximum the testosterone levels in the blood and mating capability of male rabbits it should be better substituted the commercial feed with moringa leaf meal as much as 35.07%
The Effect of Protected Soybean Oil and Soybean Groats Base on in Vitro Dry Matter Digestibility, in Vitro Organic Matter Digestibility in the Rumen and Post Rumen
Authors: Pramono A , Hadi R. F. , Sutrisno J. , Cahyadi M.
Published: November 2019

The aim of this study was to evaluate protected of soybean oil and soybean groats as feed supplement based on dry matter digestibility, organic matter digestibility in vitro in the rumen and post-rumen. Protected feed supplement was produced from soybean oil through two protection methods. It was saponification and microencapsulation. Soybean groats protected through formaldehyde 1%. This research uses a completely randomized design with 3 treatments which each treatment was repeated 10 times. Treatments were P0: 40% elephant grass + 60 basal concentrate; P1: 40% elephant grass + 50 basal concentrate + 10% soybean oil and soybean groats protected; P2: 40% elephant grass + 45 basal concentrate + 15% soybean oil and soybean groats protected. The results in the first step (rumen) of the P0 showed that has dry matter digestibility 69.50% and organic matter digestibility 69.74%, P1 has dry matter digestibility 50.07% and organic matter digestibility 52.55%, and P2 has dry matter digestibility 48,45% and organic matter digestibility 49.75%. In the second step (post rumen) the digestibility of P0 has dry matter digestibility 70.64% and organic matter digestibility 70.85%, P1has dry matter digestibility 70.56% and organic matter digestibility 71.74%, and P2 has dry matter digestibility 73.17% and organic matter digestibility 73,86%. The results could be concluded that in the rumen protected of soybean oil and soybean groats have more resistant (stable) to microbial degradation than the basal diet and it can be degraded and digested in the abomasum to the small intestine.
Using bio-starter to increase growth and production of hortensia flower (Hydangea sp)
Authors: Suriani Ni Luh , Susun Parwanayoni Made Ni , Sudatri Ni Wayan , Suartini Ni Made
Published: November 2019

The purpose of this study was to increase the growth and production of horticultural flowers through the use of organic fertilizers without and with stater biotechnology. This study was a field study using a randomized block design (RBD) with 3 treatments and 5 replications. The data obtained were analyzed quantitatively using ANOVA, if there was a difference between the treatments followed by the Duncan Multiple Range Test (DMRT) at the level of 5%. The results showed that the bio-starter had an effect on the quality of organic fertilizer. Likewise, it has a significant effect on the growth and production of hortensia. This is probably due to the making of organic fertilizers with bio-starters, the decomposition of organic matter is perfect, does not cause odor, the availability of nutrients and the number of species becomes more abundant. With a lot of nutrients, it is easier to absorb by hortensia and the use of soil bio-starter becomes more loose, porosity increases.
Storability of Seaweed Jelly Candy based on Chemical, Physical and Microbiology Characteristics
Authors: Ismawati Rita , Romadhoni Ita Fatkhur , Nurul Q.T , Ratna S.T
Published: November 2019

Seaweed is a valuable fishery product and becomes potential source of foreign exchange. Candy jelly, for example, is one of the results of diversified seaweed products. This study aims to determine the ability of storing seaweed jelly candy in terms of physical and micro forms. The one-shot case study method was applied in this study. Variability in shelf life was observed for four days by distinguishing the characteristics of each jelly candy (H1, H2, H3, and H4). Physical testing on this study involved 5 expert panelists. The results showed that the texture of seaweed jelly candy at safe limits was stored until the second day (II) with the characteristics of not slimy and hyphae, and the aroma produced on the second day was not rotten. In terms of color, seaweed jelly candy on day II was yellowish white and without black speckled. Microbiological test results showed the shelf life limit for seaweed jelly candy is on the second day (II) with a total plate number of 2.1×104 cfu/ml, while on day III (9.0×104) had exceeded the maximum contamination limit of 5×104, which was not suitable for consumption. On the first day of storage (I) the amount of mold/yeast was 6.0×102 cfu / ml while on day II (2.5×103) which means that it has exceeded the maximum contamination limit of 103. On the fourth day of storage did not meet the criteria for consumption. The types of microorganisms growing during the storing process are Aspergillus Niger, Aspergillus sp, Cephalosporium, sp yeast, and Rhizopus sp. Seaweed jelly candy has a fat content of 0.78 grams/100 grams, iodine content of 103.36 milligrams/100 grams and pH 4.88, whereas with a water content of 14.90%, ash content of 0.52%, and reducing sugar content of 4.53%.