bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intelligent prediction method of mechanical property based on hybrid driving of industrial data and mechanism model for high speed wire
Authors: Li Hairu , Li Jie , Sun Qianqian , Zhao Fuxiang 
Published: November 2019

Abstract
For the high speed wire production process, a temperature field model and a strain field model were established. Based on the metallurgical mechanism model, the recrystallization and phase transition processes of the high speed wire rolling process were calculated, and the microstructure closely related to the mechanical property was obtained. Based on the combination with the actual production data, an artificial intelligence neural network architecture for predicting product property was established. Through the training of a large amount of data, the mapping relationship between process parameters and mechanical property was obtained, which has practical significance for the adjustment of actual chemical composition and process optimization.
Evaluating the Strengthening Effect of a Cracking Cross-beam for a Steel Truss Bridge
Authors: Xu Tianhui , Zhai Guanghui , Tan Jinhua 
Published: November 2019

Abstract
A three-dimensional finite element model of a steel truss bridge is established, and the stress distribution under dead loads is investigated. Then the most cracked cross-beam is modelled into solid elements, whose bearing capacity are investigated before and after being strengthened respectively, and the effectiveness of strengthening is estimated by static analysis. The joint with a crack whose size and location come from the site inspection is modelled, and the J integral, the stress intensity factor and the crack growth rate are estimated under specified load, lastly the fatigue performance are compared between the model before strengthening and that of after strengthening. The results show that the bearing capacity of the strengthened joint is greatly enhanced, the local stress concentration and deformation are significantly reduced, and the stress distribution become more reasonable, which prove that the fatigue performance is greatly improved, and the strengthening work achieved its design goal.
Study on the Influence of Different Tempering Processes on Microstructure and Properties of 40Cr Steel
Authors: Li Hongbo , Li Chunjie , Jiao Renbao , Liu Shibin , Pu Hongxu , Ma Zhen , Wang Di , Liu Wei , Rong Shoufan , Li Bing , Niu Yulin 
Published: November 2019

Abstract
In this paper, the heat treatment of 40Cr steel is carried out to explore the difference of performance of 40Cr steel under different temperatures and different heat treatment conditions, and the optimal scheme is obtained. The results show that the workpiece is subjected to 850 °C normalizing plus 240°C low temperature tempering and 860°Cnormalizing plus 440°C medium temperature tempering and 860°Cnormalizing plus 520°Chigh temperature tempering. It is found that in the process of temperature increase, the infiltration A large amount of alloying elements such as carbon and chromium contained in the carbon body are incorporated into the austenite. Under the premise of ensuring the normalizing temperature is constant, as the tempering temperature increases, the hardness of the sample decreases, the toughness increases, and the microstructure of the metallographic microstructure is coarse. The samples were compared with 860°C oil quenching + 240°C low temperature tempering and 860°C normalizing + 240Clow temperature tempering samples. It was found that although the low temperature tempering after oil quenching had the highest strength, the plasticity index decreased significantly, the impact toughness value was the lowest, and the comprehensive performance was poor.
Optimization reconstruction of biregular term from limited-angle projections
Authors: Yufang Cai , Fanping Fu , Jue Wang , Yan Cheng 
Published: November 2019

Abstract
To reduce artifacts of CT image reconstructed from limited-angle projections data, we develop a biregular term optimization algorithm, which introduces the singular value decomposition (SVD) as an additional regularization term on the basis of gradient L0 norm regularization. We combine the alternating direction (ADM) method and the variable splitting method to solve the proposed optimization model. Firstly, the regularization of gradient L0 norm is performed, which takes advantage of the sparsity of the image gradient. Then, the regularization of SVD is carried out, which based on the low rank of the image. Finally, the weighted errors of two regularized image are fed back to the iterative reconstruction process. The experimental results show that, compared with the SART, SART+SVD,SART+L0 algorithms, the maximum peak signal-to-noise ratio (PSNR) of the proposed algorithm is increased by about 28%, 25%, 1%, and the root mean square error (RMSE) is reduced by about 11%, 8%, 0.05%, respectively. The proposed biregular term optimization algorithm can accurately restore image edge, effectively reduce the artifacts reconstructed by limited-angle projections, and significantly improve image quality.
Application of 3D Design Technology Based on BIM in Substation Design
Authors: Ren Chunguang , Guo Ning , Chen Bo 
Published: November 2019

Abstract
With the information technology era of intelligent grid of the new concept of deepening, substation as an important part of the smart grid has been sustained attention, substation design technology is also constantly improved to meet the new requirements of the national grid, building information model (referred to BIM) is one of the more widely used design techniques. This article briefly describes the use of Revit for three-dimensional design process, the establishment of family and so on. In addition, the advantages and limitations of the current three-dimensional design in the design of electrical specialty, civil engineering design and collaborative design are also discussed.
Research on Multi-scenario Intelligent Forecasting Model of China’s Electric Power Consumption Driven by Policy
Authors: Zhan Liping , Gu Yan 
Published: November 2019

Abstract
Electricity is the symbol of modern industrial civilization, the basic input of production and the necessities of people’s life. With the development of economy, the electric power industry plays an increasingly important role in the national economy. Accurate judgment of power demand is the premise of scientific planning, and its basis is a correct understanding of the law of power consumption, as well as a scientific understanding of the inherent relationship between power demand and economic development. Therefore, this paper systematically studies the relevant data of China from 1993 to 2018, carefully analyses the relationship between economic development and power consumption, reveals the basic law of power consumption and economic development, and on this basis, sets up different scenarios around industrial structure and power consumption structure, and makes multi-scenario prediction of China’s electricity demand in the coming 2020, 2030 and 2050 years, with a view to providing China’s electricity demand. Force demand planning and related policy formulation provide some reference.
Analysis of bearing capacity of Kunming Dianchi National Tourism Resort
Authors: Zhipeng Yang , Ying Xiong 
Published: November 2019

Abstract
Explaining the practice of social development shows that bearing capacity is a problem that must be faced by regional sustainable development. This paper uses the restrictive factor method to calculate and analyze the bearing capacity of Dianchi Lake Resort. The results show that the bearing capacity of Kunming Dianchi National Tourism Resort is currently in a state of overall coordination and some of the problems are outstanding; and corresponding suggestions are proposed.
Research and Design of High Voltage Intelligent Switch Technology Based on Primary and Secondary Fusion
Authors: Xiaoming WANG , Ke ZHOU , Wei ZHOU , Wenwei Li 
Published: November 2019

Abstract
At present, the intelligence of high-voltage switch is mainly embodied in the application of intelligent components such as intelligent terminals. A large number of discrete components and cables are still used in the switch body and secondary circuit. It brings many difficulties to installation, debugging, operation and maintenance. In order to adapt to the development direction of digital, integrated and standardized of primary equipment, this paper proposes a high-voltage intelligent switch scheme, which is fully integrated primary and secondary. This scheme will build multi source intelligent sensors, such as position sensor, SF6 gas sensor, current sensor, and configure intelligent control module in mechanism box and control box. The intelligent sensor realizes self-perception of equipment state, and the intelligent control module integrated with the switch mechanism body completes the local intelligent signal acquisition and control, it realizes the secondary circuit composed of optical fiber instead of cable and intelligent operation circuit instead of traditional discrete components, which greatly simplifies the traditional secondary circuit of switch, improves operation and maintenance efficiency.
Research on Probability Model of Non-independent Fault of Nuclear Power Units Based on Power Grid Operating Parameters
Authors: Xiaoming Wang , Dongshan Huang , Bin Wang , Xiangyu Lin 
Published: November 2019

Abstract
Nuclear power plants have the characteristics of high safety and reliability requirements, unlike the conventional thermal power plants adopting an independent fault probability model, the probability of its fault is closely related to the operation status of the power grid. To solve this problem, a non-independent fault probability model of nuclear power plants considering power grid operation parameters is proposed in this paper. This research firstly simulates N-1 fault scenarios of each power component in the grid, then the influences of the fault scenarios on the voltage and frequency of nuclear power plants access point are simulated through the power system analysis software tools (PSD-BPA), the possibility of its outage is determined according to the corresponding protection thresholds of nuclear power plants, and then the occurrence probabilities of these fault scenarios are taken into account, finally the non-independent fault probability of nuclear power plants which is relevant with power grid operation parameters will be obtained. The model lays the foundation for the evaluation of the operational reliability and risk of power grid with nuclear power plants accessed to.
Study on production of organic acid rust remover from passion fruit fermented by Aspergillus Niger
Authors: Jiang-xue Long , Jia-li Jiang , Shi-ming Zhang , Xiao-feng Dai , Xu-jie Dong 
Published: November 2019

Abstract
Organic acid and rust remover based on citric acid were gradually praised by the industry because of its environmental protection and good derusting effect. In this paper, the production cycle of citric acid by Aspergillus Niger shaking flask fermentation was studied with Passion Fruit/Shell, and the rust removal effect of the product was preliminarily verified. The cultivation factors included Passion Fruit/Shell 20%+Sucrose 5%, 35°C, pH 5.0-5.5, shaking table 150 r/min, the fermentation cycle could be completed in 4-5 days, and the pH in fruit fermentation broth decreased to 2.7. At room temperature, the derusting effect of 1 time diluted fruit fermentation broth equaled that of 3%commercial citric acid, the rust removal time could prolonged properly at low temperature. The resultshad a guiding significance for producing organic rust remover from Passion Fruit by Aspergillus Niger.
Degradation of Diclofenac Sodium in Microbial fuel cells
Authors: Wu Y C , Fu H Y , Wen H , Chen F D , Dai Z N , Yang A L 
Published: November 2019

Abstract
Diclofenac sodium is an extensively consumed non-steroidal anti-inflammatory drug for certain non-rheumatic diseases and frequently detected at surface water. This work we studied the degradation process of diclofenac sodium in an anodic chambers of microbial fuel cells. It was found that biodegradation of diclofenac sodium could be achieved in the microbial fuel cells, and the removal rate of diclofenac sodium was accelerated after bioelectrochemical activity microorganism acclimation. The highest removal rate can reach up to 30.73% after 2 weeks of operation. The results also showed that weak acid (pH=5.5) condition favour the degradation of diclofenac sodium, while low temperature condition inhibited its degradation. This work provided a new way to remove diclofenac sodium from wastewater.
Quality of particleboard made from rattan waste
Authors: Astari L , Sudarmanto  , Kusumah S S , Akbar F , Prasetiyo K W 
Published: November 2019

AbstractIndonesia as a tropical country has a various source of renewable resources; rattan is one of them. Rattan (Calamus rotangL.) is mainly utilized as raw material for furniture. Several wastes such as core and bark are produced during the process of furniture making. This research was conducted to investigate the properties of particleboard made from core and rattan bark. Rattan particle with moisture content less than 5% was mixed with the adhesive. Phenol formaldehyde (PF) 12% was used as the adhesive. The mixed particle was then hot pressed for 10 minutes at 150 °C with 25 kgf/cm2. Board dimension was 25 x 25 x 1 cm. Before testing, boards were conditioned for seven days. Testing was conducted for physical and mechanical properties according to JIS A 5908-2003. Surface roughness testing, as well as wettability, was also conducted to investigate the surface properties of particleboard.
Mechanism of heat transfer using water in wood pores during wood densification
Authors: Sufiandi S , Darmawan T , Dwianto W 
Published: November 2019

Abstract
Heat treatment was used for softening purposes during wood compression. Water was impregnated into wood pore to study heat transfer of wet wood along the process. Heat treatment of 3 hours before compression were measured at the center-side of compressed wood pores that perpendicular to compression direction. Temperature measurement of experimental results and simulation model were compared and discussed.
Directional response of the subterranean termite Coptotermes curvignathus toward volatilized Pinus merkusii extract
Authors: Fajar A , Himmi S K , Kartika T , Yusuf S 
Published: November 2019

Abstract
Preliminary study on termite recognition for food source location was carried out by the subjection of volatile compounds emitted by Sumatran Pine (Pinus merkusii Jungh. & de Vriese). Food source recognition by termite was evaluated using a set-up model on the inverted Y-tube apparatus. The apparatus consisted of a release chamber, in which five workers had been released; an intersection chamber, in which termite movement would be evaluated for clockwise and counter-clockwise movements; and a pair of food chamber. Between the intersection chamber and food chambers, a tunnel with 5 cm length was divided into five scale ranges, in which each range was related to a preference score. Various set-up models had been prepared from these concentrations: 0%; 0.5%; 1%; 2%; 4%; 8% of the macerated extract of Sumatran Pine sapwood in 8 mm paper dish. Each set-up consisted of a pair of concentrations: low & high concentration, which was located on different food chambers. The results suggested that termite showed directional preference to a low concentration, even in a set-up model of 0% & 0.5% (F= 16.65, P = 0.002), which indicated that the extracts might have a repellent effect against termite. When the results were clustered based on termite’s movement, clockwise and counterclockwise, significant preference for low concentration was observed in two and one set-up models, respectively. Behavioural observation showed that in most of the set-up models, the first food chamber explored by a termite would generate more preference scores, regardless of the concentrations.
Isolation and identification of decomposer fungi from Macaranga indica and Hibiscus macrophyllus leaf litter from restoration area of Gunung Leuser National Park
Authors: Elfiati D , Delvian  , Hasugian F A 
Published: November 2019

Abstract
Leaves mostly litter on the forest floor. The process of leaf litter decomposition involves the role of microorganisms such as fungi. The study aimed to isolating and identifying the fungi of Macaranga indica and Hibiscus macrophyllus leaf litter. The leaf litter was taken under the stand of Macaranga indica and Hibiscus macrophyllus in the restoration area of Gunung Leuser National Park Sei Betung Resort North Sumatra. Fungi were isolated using the direct plating methods with Potato Dextrose Agar medium. The purified fungi were then identified morphologically to the genus level. Morphological identification carried out by looking at the macroscopic and microscopic features of fungi. There were six isolates from Macaranga indica leaf litter and eight isolates from Hibiscus macrophyllus leaf litter. The result shows that there are five genera of fungi consisting of Aspergillus, Penicillium, Mucor, Trichoderma, and Cladosporium.
The study of diversity index on plankton community in Lematang River to determinate the quality of waters as habitat of local fishes
Authors: Sagala E P 
Published: November 2019

Abstract
The existence of plankton community in Lematang River is important for supplying diet nutrition to juvenile fishes. Based on study that had been done in Lematang River, there are relationship between the populations of several fishes with plankton diversities. Some activities which disturb the living of plankton are sand and stone mining. This activities have destroyed niche habitat for plankton and fishes. Additionally, other factor that lead to the damage are domestic and industrial wastes originated from Lahat and areas a longside Lematang River. According to this research, local fishes that could be found in upstream of Lematang River were Rasbora sp., Puntius sp., and Hampala sp. and etc. Diversities index of plankton communities on upstream was higher (more than 3,00) than those that on downstream (less than 3,00). Regulation to prohibit sand and stone mining are necessary to conserve niche habitat of Lematang River for plankton and local fishes.
The nutritional content of some fruits as feeding sources of Sumatran orangutans
Authors: Onrizal O , Auliah N L 
Published: November 2019

Abstract
Orangutans are classified as frugivore that most of their feeding sources come from fruits. Bukit Lawang forest (BLF) as part of Gunung Leuser National Park (GLNP) is known as the first center for orangutan rehabilitation (COR) established in 1973 and then closed in 1991. To date, the BLF is the orangutan viewing center (OVC). This study aimed to assess the nutritional content of some fruits feed by Sumatran orangutan (SOU) in BLF and to determine the energy adequacy from fruits eaten by SOU. The nutritional content was analyzed by proximate method. There were nine fruits from different tree species as SOU food sources analyzed in this study. According to the nutritional content, the best fruit for orangutan feed was P. lateriflora which the highest content of the fruit was water content (62.13%), followed by carbohydrate (23.81%), protein (13.72%), ash (0.21%) and fat (0.10%). This study indicated that the nutritional requirements of SOU at the BLF were categorized as sufficient. Therefore, no additional feed is needed for SOU in the area, and feeding time session can be eliminated in the OVC Bukit Lawang of GLNP.
Simalungun language phonotactics: the study of phonology
Authors: Purba A R , Siahaan J 
Published: November 2019

Abstract
Phonotactics research is a procedure for the discovery and determination of the sequence and phonemes in a language based on distribution (beginning, middle and end of a word). Each language has a special characteristic in phonotactics. Therefore, phonotractics research needs to be done. The purpose of this study is to describe a series of vocal, diphthong, a sequence of consonants, and syllables. The method used was descriptive qualitative methods by collecting data through observation, interview and study library by using the phonotractics theory initiated by O’Grady, et al (1989) and Pulgram (1970). Based on the analysis of phonotractics in Simalungun language, vowel sequence was found to occupy the position of beginning, middle and end of a Word. Diphthongs only occupied the position of the end of a word, whereas the consonant sequence was only found in the middle of word. The results of the analysis showed that the vowel sequence consists of sixteen (16), namely: vowel sequence /ai/, /au/, /ae/, /ao/, /ia/, /iu/, /io/, /ua/, /ue/, /uo/, /ui/, ea/, /eu/, /eo/, /oa/ and /oi/. Diftong consists of three (3), they are /ou/, /ei/, and /ui/. There are ten (10) consonant sequences, namely: a). The sequence starts with a consonant /h/ as : /-hb-/, /-hk-/, /-hp-/, and /-ht-/., b). The sequence starts with a consonant /k/ as : /-kb-/, /-kd-/, /-kj-/, /-kl-/, /-km-/, /-kp-/, and /-kt-/., c). The sequence starts with a consonant /l/ as : /-lb-/, /-ld-/, /-lh-/, /-lm-/, /-lg-/, /-lg-/, /-lj-/, /-lŋ-/, /-lp-/, and /-lt/., d). The sequence starts with a consonant /m/ as : /-mb-/, /-mm-/, /-ml-/, and /-mp-/., e). The sequence starts with a consonant /n/ as : /-nd-/, /-nj-/, /-ns-/, and /-nt-/., f). The sequence starts with a consonant /ŋ/ as : /- ŋ g-/, /- ŋ j-/, /- ŋ k-/, /- ŋ l-/, /- ŋ m-/, /- ŋ r-/, /- ŋ s-/, and /- ŋ t-/., g). The sequence starts with a consonant /p/ as : /-pd-/, /-ph-/, /-pr-/, /-ps-/, and /-pt-/., h). The sequence starts with a consonant /r/ as: /-rb-/, /-rd-/, /-rg-/, /-rk-/, /-rj-/, /-rl-/, /-rŋ-/, /-rp-/, and /-rt-/., i). The sequence starts with a consonant /s/ as: /-sd-/, /-sq-/, /-sk-/, /-sp-/ and /-st-/., j). The sequence starts with a consonant /t/ as : /-tg-/, /-tp-/, and /-tr-/. The syllables in the vowel sequence consist of V, VK. KV, and KVK. The syllable in diphthongs consists of KVV at the end of the word and the consonant sequence consists of the KK which occupies the middle position of the word.
Fiscal decentralization in villages: high nepotism low capacity
Authors: Simanihuruk M , Sihombing T 
Published: November 2019

Abstract
Fiscal transfer of nearly one billion to the village accounts made the struggle for village heads tense. This tension is because the legacy of the village founder (huta), who is the basic foundation of village governance in the past, has to deal with liberal democracy in the practice of the current election of village head. Collective communitarian democracy as a feature of self-governing capacity at the village level has not been completely abandoned, but it has to carry out individual liberal democracy at the same time . In general, village heads in the two sub-districts of this study have participated in capacity building related to their duties and functions such as the preparation of the Village Medium Term Development Plan (RPJM-Desa), Village Regulations (Perdes), except the establishment of Village Owned Enterprise (Bumdes). Even so, the village documents are only slightly stored in the files of each village. The kinship politics of the village apparatus (village head, village secretary, village treasurer) as well as between village apparatuses, namely the Village Government Agency (BPD), were marked by a very close relationship. This kinship politics is because they are the first clan of the village. This village is only inhabited by the descendants of the clan group, and there is almost no imigration. The political implication of this kinship is a reluctance to monitor each other (both intra and between village units) when power abuse occurs.