bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Method to Improve the Concrete Shrinkage Prediction Based on Short-Time Tests
Authors: Hu Shi-Xiang , Luo Min , Cong Ling , Lin Min 
Published: July 2019

Abstract
The computational accuracy of concrete prediction models is the key to investigate shrinkage influence on performance of concrete structure. Commonly used concrete prediction models are evaluated for their accuracy by comparing their predicted results against the six groups of test data that are collected from published papers. The results show that prediction models were not coincided very well with the experimental data. The phenomenon of concrete shrinkage is a result of several interacting physical mechanisms and is influenced by many variable factors. The shrinkage deformations invariably exhibit large statistical scatter. The calculated results of prediction models could not agree very well with the test results. In order to improve the calculation accuracy of concrete shrinkage prediction models, updating the prediction models based on short-time tests is an effective method. And the general method is not proper because of ill-posed problem. So a new improvement method was proposed and suggested in this study. Seven groups of concrete shrinkage test data are used to evaluate the suggested method. It could be found that the suggested method could match better with the test data.
Study on Influence of Suspension Interval Length on Construction and Closure of Main Girder of Continuous Rigid Frame Bridge
Authors: Zou Lanlin , Cheng Junfei 
Published: July 2019

Abstract
Cantilever pouring construction is a commonly used construction method for continuous rigid frame bridges, but during the construction process, the occurrence of overcasting intervals sometimes occurs. Based on the construction monitoring project of the Bahe Bridge, the finite element software was used to simulate the actual construction process. The measured values of the deflection of the overcast interval were compared with the theoretical values, and the concrete shrinkage and prestressed steel bundles were analyzed. Under the influence of influences on the deflection and stress of different sections of continuous rigid frame bridges with different durations of overcasting. The results show that the variation of the stress of the main beam is small and can be neglected under different conditions of different casting intervals. Different overcasting intervals and different section stoppages have a greater impact on the deflection of the main beam section. In the actual construction, preventive measures should be taken in advance, and the design elevation of the suspended girder section should be adjusted in time to facilitate the construction of the closed section.
Analysis of the impact of accessing the distributed energy storage system on power distribution network
Authors: Zhang Tao , Gong Taorong , Li Dezhi 
Published: July 2019

Abstract
When distributed energy storage on user side is connected to the distribution network, it will have a significant impact on the distribution network. So the reasonable access for energy storage system has become a key problem. Therefore, this paper analyzes the impact on power distribution network loss and voltage stability by accessing distributed energy storage on user side. Firstly, the relationship between voltage stability of distribution network and distributed energy storage access is studied. It is concluded that the distributed energy storage is beneficial to the voltage stability of distribution network. Then the calculation method of distribution network loss before and after distributed energy storage access is analyzed. Finally, the access location of distributed energy storage is simulated and analyzed. Considering the network loss and voltage stability, it is concluded that small capacity distributed energy storage should be connected at the end of the line, and a certain large capacity distributed energy storage should be connected at the beginning of the line.
The most preferred location planning for electric vehicle charging stations considering harmonic pollution based on vehicle behavior simulation
Authors: Mao Yingying , Gong Taorong , Dong Mingyu 
Published: July 2019

Abstract
With the continuous implementation of China’s energy conservation and emission reduction policies, the number of electric vehicles in cities is also increasing. In order to ensure the stable and rapid development of the electric vehicle industry, it is necessary to reasonably build electric vehicle charging stations to meet the vehicle charging requirements. Reasonable location and volume can improve the charging convenience of electric vehicle owners and improve the service life of electric vehicle batteries. In this paper, the charging requirements of electric vehicles are divided into three levels. And Markov chain is used to describe the behavioral information such as driving state, parking position, driving mileage and remaining electricity to obtain different charging requirements. The mathematical model is established with the goal of maximum coverage and consideration of factors such as harmonic pollution. In this paper, genetic algorithm is used to find the optimal charging station location.
Analysis of Economic Activities of Power Grid Enterprises Based on Reform of Transmission and Distribution Price
Authors: Ma Guozhen , Wang Yongli , Gao Shan , Wu Xiangming , Zhao Yang , Wang Shuo 
Published: July 2019

Abstract
After the reform of transmission and distribution price, the profit model of power grid enterprises changed, and the composition of profits and costs were affected. The business activities of enterprises changed greatly. Conducting economic activity analysis can strengthen business management, find the crux of corporate problems, and improve operational efficiency. The paper analyzes the impact of the reform of transmission and distribution price on the economic activities of enterprises, and builds an analysis model of economic activities of enterprises based on total profit, main business cost and main business income. The model can provide theoretical support for the analysis of economic activities of power grid enterprises under the situation of electric power reform, and help enterprises to improve management and tap the potential of enterprises, which has certain practical significance.
Interfacial fracture morphologies of stainless steel clad plates after uniaxial tension
Authors: Li Hao , Zhang Liyuan , Zhang Boyang , Zhang Qingdong 
Published: July 2019

Abstract
The interfacial fracture morphologies of stainless steel clad plates, dividing into stainless steel layer, diffusion layer and carbon steel layer, after uniaxial tension loading are investigated. It is found that the fractures occur randomly along the interface line between the stainless steel and diffusion layers, which could be induced by the stress concentration effect. The relatively high ductility of the carbon steel reduces the stress concentration to avoid the possible generation of the interfacial fracture in its layer. Furthermore, the bonding forces between the stainless steel and diffusion layers determine the distribution of the fractures. High bonding force could retain the interface without fracture, while the fractures would occur in the domains with low bonding force. This work deepens the failure mechanism of the stainless steel clad plates and is useful in the safety evaluation in their applications.
A New Method to Determine the Productivity Equation Coefficient of Low Permeability Gas Reservoir
Authors: Yu Beibei , Li Donglin , Li Hui , Li Qiuyuan , Yang Yan 
Published: July 2019

Abstract
Stress sensitivity exists in the development of low permeability gas reservoir, which leads to the large difference between the productivity of gas well in the middle-late stage and the initial stage. Gas field production usually uses empirical formula to calculate productivity equation coefficient by known well test data or static pressure. However, in actual production, due to economic reasons, well testing cannot be carried out frequently, or interrupted production to obtain the static pressure, so the actual productivity of gas Wells cannot be obtained quickly. This paper combined the material balance equation with binomial productivity equation, and the coefficient of productivity equation is obtained by using the fitting analysis of single well production history data. This method overcomes the dependence of traditional method on formation pressure, and the productivity equation which calculated by this method can reflect the influence of stress sensitivity on gas well productivity, it provides a new method for productivity analysis of low-permeability gas reservoirs.
Research on the digestibility of glutinous rice starch based on high hydrostatic pressure technology
Authors: Wei Jiang , Meng Zhu , Yang Li , Jinlong Wei 
Published: July 2019

Abstract
Glutinous rice was a traditional Chinese crop, made from glutinous rice dumplings, rice cakes and so on by the national favorite. However, glutinous rice itself contains up to 98% amylopectin, so it is difficult to be digested and absorbed in the human stomach. Moreover, traditional food processing technology cannot improve the digestibility of glutinous rice starch. As a new type of food processing technology, high hydrostatic pressure technology had prominent advantages in food sterilization, modification, extension of shelf life, etc. Therefore, it was undoubtedly a new innovation to use high hydrostatic pressure technology to improve the digestion and absorption rate of glutinous rice.
Research and Demonstration on Automatic Generating Algorithm of Distribution Network Investment Statistics
Authors: An Peng , Zhang Jian , Liu Jiaguo , Liu Guoming , Rong Peng , Shan Laizhi , Wang Qing , Yue Caiyang , Yu Baijian , Zhang Wei 
Published: July 2019

Abstract
The statistics and guarantees of the investment completion data of the current distribution network infrastructure projects still use the traditional offline manual calculation method which lacks objective and unified calculation standards. Meanwhile, the number of distribution network infrastructure projects is large, the single investment amount is small, the completion of investment is a large workload, and the accuracy, objectivity and timeliness are poor. It is difficult to adapt to the external investment supervision, the authenticity of statistical data and the objective needs of the development of big data technology. Taian Power Supply Company actively explores the application of information technology to automatically calculate the algorithm of distribution network investment statistics, unifies the calculation standard of investment completion of distribution network projects, improves the quality of distribution statistics of distribution network investment, and improves the lean management level of distribution network investment.
The Assessment of Distributed Photovoltaic Capacity Credit in Courts Considering High Penetration
Authors: Han Ninghui , Tian Shiming , Li Yang , Mao Yingying 
Published: July 2019

Abstract
Due to the intermittent and volatility of photovoltaic power generation, it is generally considered that there is only electricity value and no capacity value. With the high penetration of large-scale distributed photovoltaic access to low-voltage distribution network, distributed photovoltaic will gradually become an important alternative energy source. Based on the theory and experience of domestic and international photovoltaic power generation capacity credit assessment, this paper studies the correlation between distributed photovoltaic season, diurnal power generation characteristics and load. This paper also studies the characteristics of power generation system and characteristics of the power distribution system under high penetration distributed photovoltaic access. A calculation method for the capacity credit of high penetration in multi-scenario courts is proposed to provide support for precision investment.
Air conditioning dispatching and economic analysis of ice storage in urban power grid
Authors: Meng Liming , Chen Lei , Jiang Tuo , Xu Fei , Yao Xingchen , Hao Ling , Yang Shuai 
Published: July 2019

Abstract
Considering the characteristics of hydropower in Chongqing and the on-grid electricity price of power generation, water and wind power, and the time-of-use electricity price of users purchasing electricity, the model of Chongqing large-scale ice storage air-conditioning is established and is optimized based on the minimum power purchase cost of the power grid and the minimum operating cost of ice storage air-conditioning. The goal is to dispatch generators and ice storage air conditioners to maximize the benefits of the grid and users, while reducing the abandonment of water and wind power. The feasibility and effectiveness of the proposed control strategy are verified by simulating the control of ice storage air conditioning under different cooling load requirements.
Analysis on Energy Saving Potential for Pumped-storage and Two-shift Peaking of Coal-fired Units
Authors: Zhang Hong-wei , Liu Junqing 
Published: July 2019

Abstract
North China power grid is mainly a thermal power system, so it is hard to meet increasing need of difference between peak and valley loads and the demand of peak-load regulation. Units peaking mode is directly related to the peaking economy, this paper set up a mode and appropriate economic assessment model for pumped storage and coal-fired power units two-shift peaking. Comprehensive consideration of pumped storage capacity and the factors influencing the load time, the evaluation method was proposed. The application indicates that the method is effective in a peaking cycle. The evaluation method can reasonably reflect the situation of the turbine peaking economy in the coal-fired power plants, and brings the benefits for pumped storage and 300MW coal-fired power units. It provides a reference for energy-saving dispatching. Pumped-storage and coal-fired power units can be used as basis for decision making of peaking shaving mode.
Review of simulation research on pulverized coal combustion in industrial boilers
Authors: Liu Xuemin , Ge Yajun , Qi Guoli , Zhang Songsong 
Published: July 2019

Abstract
The development of pulverized coal industrial boilers was briefly introduced in this work. The numerical research on PC industrial boiler in recent years was summarized. Due to the limited space in the furnace of PC industrial boiler, calculation of flow and temperature distribution in the burner is the focus of numerical simulation. With the increasingly strict environmental protection regulations, NO
x
emission characteristics under different design and operating conditions have attracted more and more attention. The calculation models adopted by different scholars were analyzed, based on which the common models suitable for simulation of PC industrial boiler were concluded.
Computational analysis of multi-energy flow in integrated energy systems
Authors: Tao Jing , Xu Wu , WenHuo Yi , LinLi Yi 
Published: July 2019

Abstract
Integrated energy system (IES) has become the trend of energy development in the future, but the degree of coupling between energy systems in traditional systems is not high, and the power flow calculation method based on power system will be difficult to meet the need for coupled energy flow analysis. This paper firstly uses the coupling matrix of the energy hub to construct a coupled model of the integrated energy system that fully considers the coupling of the power network and the natural gas network; then we use the Newton-Raphson method to calculate the power flow; finally, an example is used to verify that the comprehensive coupled model will have practical significance in the construction and operation of the integrated energy system.
Design of full solar electric push boat for scenic spots
Authors: zhou Qipei 
Published: July 2019

Abstract
In view of the current situation that the scenic cruise ship is still dominated by diesel power, the solar photovoltaic technology is applied to small and medium-sized cruise ships, and solar power generation and ship electric propulsion technology are combined to carry out ship design and optimization, component design and matching, and reasonable. The solar panels on the ship and the dock are arranged to design an all-solar power cruise ship, which realizes zero discharge of the operation process without affecting the sightseeing conditions, and achieves the effect of energy saving and emission reduction.
Antagonistic Endophytic Fungi of Globba pendula Roxb. from Taman Hutan Raya, North Sumatra against Staphylococcus aureus ATCC® 29213TM
Authors: Lutfia A , Munir E , Yurnaliza  
Published: July 2019

Abstract

Globba pendula Roxb. is a species in Zingiberaceae with prospective source of novel bioactive compounds. Traditionally, the roots or rhizomes have been used to treat several ailments in South Sumatra, Indonesia. Bioprospecting of its bioactive compounds is still limited along with its associated microorganisms, especially the natives one in North Sumatera. In this study, we conducted a preliminary screening of 16 (sixteen) fungal endophytic isolated from rhizome of G.pendula in Taman Hutan Raya, North Sumatera. The isolates were subjected against Staphylococcus aureus ATCC® 29213™ using dual culture plate assay. The sixteen isolates were differentiated morphologically by considering characters such as: Form, Elevation, Margin, Color, Texture, Concentric ring and Radial lines. All isolates were antagonists of S.aureus with different performances. Two isolates exhibited very strong antagonistic activity (++++), 13 isolates with strong activity (+++), and only one with mild activity (++). The results suggest that fungal endophytes from G. pendula may be used as source of antimicrobial compounds. The molecular identification of endophytes is currently under investigation.
Physicochemical Properties of Gelugur Powder (Garcinia atroviridis)
Authors: Karo-Karo Terip , Julianti Elisa , Nurminah Mimi 
Published: July 2019

Abstract
Garcinia fruits (local name asam gelugur) are one of endemic species in North Sumatera, Indonesia. In Indonesia, asam gelugur have been used for seasoning cook and tea. This study used two factors, the maturity level (T) and drying temperature (S). The result showed that the level of maturity had a very significant effect on water content, total soluble solid, and total acid; had a significant effect on ash content. Drying temperature had a very significant effect on water content, ash content, vitamin C content, total soluble solid, and color score; had a significant effect on total acid. The interaction between the two factors had a very siginificant effect on total soluble solid. The raw gelugur and drying temperature 50 °C produced the best and more acceptable quality of gelugur powder.
Abundance and Growth Parameter of Mangrove Crab (Scylla serrata) in Estuary Water of Karang Gading, District Deli Serdang
Authors: Mulya Miswar Budi , Harahap Zulham Apandy 
Published: July 2019

Abstract
Research about the abundance and growth parameter of mangrove crab Scylla serrata in the estuary water of Karang Gading, District Deli Serdang has been done. The aims of this research are to analyze the abundance, frequency distribution of wide carapace, and growth parameter of mangrove crab. This research use purposive sampling methods. Sampling of mangrove crab use bubu, and data analysis use the equation according to Bengen and Fish Stock Assesment Tool (FISAT II). The study obtained 146 individu of male crabs and 192 individu of female crabs. The abundance of male mangrove crabs is 88 ind m3-1 and female crabs 116 ind m3-1 . The highest value of mangrove crab abundance was found at station 4 of 68 ind m3-1 consisting of 17 male crabs and 51 female crabs, and the lowest in station 1 was 37 ind m3-1 consisting of 23 male crabs and 14 female crabs. Distribution of mud crab is included in the group distribution pattern. The male crabs takes 4 month to reach maximum carapace width, and female crab takes 5 month.
Isolation and amplification DNA of Elaeis guineensis from Bangun Bandar Plantation, North Sumatra
Authors: Hayati R , Basyuni M , Afandi D , Arifianto D , Bimantara Y , Syahputra I 
Published: July 2019

Abstract

Elaeis guineensis is the primary commodity that supports the economy of Indonesian country. Lately, several reported diseases of oil palm caused by fungi, have declined in the quality of oil palm plantation also caused the death of several mature oil palm plants. The disease damages roots or tree trunk tissue is known as Basal Stem Rot (BSR). The present study aimed to report explains of the PCR and UV-tex method for detecting Ganoderma in mature palm plants. PCR can detect disease and primer EgMT used to produce various sizes of PCR products. Each sample has different brightness amplification depending on the reaction of the plant to the BSR fungus. The primer is expected to be suitable for detecting Ganoderma fungus in dura, pisifera and tenera oil palm mature plants. The length of the DNA fragment is visible with UV-1D after being irradiated with UV light. DNA amplification ranged from a value of 10,526-114,289 bp. The type of dura plant detected by amplified BSR disease was 34,211-114,289 bp. On the other hand, pisifera is only 21,053 bp and tenera 10,526-104,844 bp.
Database of Eleusine indica from NCBI
Authors: Tampubolon Koko , Purba Edison , Basyuni Mohammad , Hanafiah Diana Sofia 
Published: July 2019

Abstract
Eleusine indica is annual weeds and was reported herbicides-resistant on oil palm plantations. The National Center for Biotechnology Information (NCBI) online available overall suite of online resources can be accessed for biological information the data, including the PubMed database and additional NCBI resources, focus on literature, health, genomes, genes, proteins, and chemicals. Results found in 16 databases for E. indica. Databases of E. indica have one book and reports, 1 MeSH, 3 NLM catalog, 303 scientific and abstracts or citations, 838 full-text journal articles, and 744 nucleotide DNA and RNA sequences. This information can be used in biotechnology research which contains explanations about herbicides-resistant, including early detection and management for herbicides-resistant E. indica biotype.
The Effect Of Plant Growth Regulators On Callus Induction Of Mangosteen (Garcinia mangostana L.)
Authors: Nasution Nurul Hidayah , Nasution Irda Wahidah 
Published: July 2019

Abstract
Induction callus is one of the tissue culture techniques. Callus formation can be driven by the addition of Plant Growth Regulator such as 2,4-dichlorophenoxy acetic acid (2,4-D) and coconut water on the media to promote callus formation. The purpose of this research was to obtain the best medium formulation for induction and growth callus from an explant of stem mangosteen (Garcinia mangostana L.). The research design was used completely randomized design with two factors: the concentration of 2,4-D (0, 1, 2, and 3 ppm) and coconut water (0, 15, and 30%) with 12 treatments and 3 replications. Parameters observed in this study were the time of formation callus (weeks), callus fresh weight (g) and callus morphology (colour and texture). The result after 12 weeks observation showed that the addition of 2,4-D and coconut water on the media can induced callus formation from an explant of stem mangosteen. The treatment combination of 2 ppm 2,4-D and 15% coconut water was the best combination for the formation of mangosteen callus and produced yellow and compact callus. This concentration was recommended to grow the mangosteen (Garcinia mangostana L.) callus, might be useful for the production of disease free and healthy plant materials and also it would be useful for genetic transformation and secondary metabolite production of mangosteen (Garcinia mangostana L.) using biotechnological approach.