Performance Evaluation and Site Application of a Hydrophobic Long-Chain Ester-Based CO2 Fracturing Fluid Thickener by Jianqiang Lu, Meilong Fu, Liu Xu, Qian Huang, Yan Zheng

“….), the authors have synthesized the novel hydrophobic long-chain ester thickener, studied viscosity, frictional drag, and proppant-carrying capacity of CO2 fracturing fluid and core damage by CO2 fracturing fluid by varying the temperature, pressure, and level of injection of the novel thickener and explored the thickening mechanism for this thickener in CO2. …”
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Study on the Friction Reduction and Wear Resistance Performance of the Surface Laser Micro-texture Shape of the Chain Pin of Marine Engines by Liu Yi, Wang Kui, Dai Longjie, Yang Yong, Li Xiao, Xiong Li

“…Based on this, this study designs the surface textures on the chain pin in three shapes—square, sine and circular. …”
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Designing supply chain scenarios and investigating how it affects relevant variables in the National Company of Southern Oil-bearing Regions by Amin Mirshekar, Ghanbar Amirnejad, Mohammad Hemati, Ali Kangarani Farahani

“…It faces many problems, including the lack of a supply chain view, lack of responsiveness and customer satisfaction, slow speed, high cost, large and inefficient storage, etc. …”
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Research on cloud manufacturing service architecture and consensus algorithm based on blockchain technology by Weijin JIANG, Wenying ZHOU, En LI, Tiantian LUO, Ying YANG

“…With the deep integration of information technology and manufacturing, the networking of manufacturing transactions has become an inevitable trend.Cloud manufacturing services can realize cross-supplier transactions that are not limited by geographical space, but in the process of transaction, there are problems such as difficulty in guaranteeing the trust of both parties and leakage of privacy.In order to solve the above problems, a cloud manufacturing service platform architecture based on a dual-chain model was proposed, which stores user data and transaction data in separate chains, and adopts a practical Byzantine fault tolerance (PBFT) consensus algorithm to solve the problem of data synchronization between blocks.However, traditional PBFT consensus algorithm has bottlenecks in storage and consensus efficiency, and is not suitable for large-scale manufacturing platforms.Therefore, further research on the PBFT consensus algorithm was carried out.The election process was optimized and the consensus protocol process of the consensus cluster was improved by combining the EigenTrust model and the quality of service (QoS), and then give the manufacturing resource rent-seeking and matching steps.Analysis and simulation experiments show that this research effectively improves the reliability of PBFT consensus nodes, improves the operating efficiency of the platform and the speed of block consensus, and saves data storage space.…”
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Research on the Complexity and Chaos Control about a Closed-Loop Supply Chain with Dual-Channel Recycling and Uncertain Consumer Perception by Junhai Ma, Hao Ren, Miao Yu, Meihong Zhu

“…According to game theory, chaotic dynamics theory, and complexity based on the literature review about the pricing strategy and recycling channels of the closed-loop supply chain, on the background of the widespread hybrid recycling channels in Chinese electronic products market, this paper builds a closed-loop supply chain model with dual-channel recycling composed of one manufacturer and one third-party. …”
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Effects of 6 week tennis specific exercises program on service velocity by Erhan Kara, Mehmet Ozkol, Tolga Aksıt, Turan Isık

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Predicting Convergence of Per Capita Income in Spain: A Markov and Cluster Approach by José F. Gálvez-Rodríguez, Miguel Manzano-Hidalgo, Amelia V. García-Luengo

“…On the one hand, a cluster analysis allows us to group the Spanish provinces according to four income levels (low, medium-low, medium-high and high), which can be determined from the quartiles of the distribution, and, on the other hand, Markov chains make it possible to study the long-term evolution of productivity and convergence between the provinces, as well as the speed of convergence towards the equilibrium situation. …”
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Serum NFL and neuropsychological performance over ∼8 years in women with and without HIV: a longitudinal repeated measures studyResearch in context by Deborah R. Gustafson, Xuantao Li, Alison E. Baird, Henrik Zetterberg, Kaj Blennow, Jinbing Zhang, Amanda Blair Spence, Pauline Maki, Anjali Sharma, Kathleen Weber, Recai Yucel

“…Summary: Background: Blood-based biomarkers of Alzheimer's disease (AD) and stroke, including serum neurofilament light chain (sNFL), are understudied in women living with and without HIV. …”
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Cookie based online tracing method for cyberlockers resource by Hai-lun LIN, Yan LI, Wei-ping WANG, Yin-liang YUE, Zheng LIN

“…It can achieve an efficient association between cyberlockers resource and its download redirect chain by construction of index table between cookie and HTTP sessions in massive HTTP sessions. …”
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Response characteristics and particle contributions of epoxy resin composite embedded with Al particles under different loading modes by Zhenhui He, Enling Tang, Wenjin Yao, Ruizhi Wang

“…The load-bearing matrix gradually transitions to the epoxy resin matrix with the continuous increase of Al particle content. At the loading speed of 20 m/s, the load bearing carrier gradually changed into epoxy resin matrix with the increase of Al particle content. …”
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Design and Kinematics Analysis of the Double Slider Tipping Bucket Mechanism by Zhu Jiacheng, Wei Zexu, Fang Mingjin, Meng Fanxi

“…The change rule of sliding block chain speed is obtained from the theory when the tipping bucket is used as the original moving part,and the kinematics parameters are provided for the intelligent control of the mechanism.…”
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NEW MECHANISMS FOR THE POWER SWITCHER WITH V EXTINGUISHING CHAMBERS by OVIDIU ANTONESCU, NATAȘA NEDELA, PĂUN ANTONESCU

“…The proposed schemes consist of triadic chains that ensure transmission angles near to the optimum values. …”
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DYNAMIC CHARACTERISTIC RESEARCH ON THE MINE SCRAPER CONVEYOR UNDER FAILURE LOAD by MAO Jun, XIE ChunXue, SUN JiuMeng, AN HuiDong, XIE Miao, WANG Tao

“…Obtain the speed change and tension distribution rules of the chain on the different seizing position. …”
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A Hybrid Seed Node Selection and No-Retracing Random Walk in Page Rank Algorithm by Azam Bastanfard, Ali Kheradbeygi Moghadam, Ali Fallahi RahmatAbadi

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Dynamique des savoirs et des échanges d’un produit de collecte en territoire transfrontalier by Laval Pauline

“…In this paper we focus on the production chain of açai juice in the lower Oyapock region, which is the river border between French Guiana and Amapá, a State of Brazil. …”
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Fast motion estimation in multi-view video coding by ZHAO Zhi-jie, FAN Zhi-peng, JIN Xue-song, MA Li, NIU Lian-ding

“…To improve the speed of motion estimation in multi-view video coding system,a fast motion estimation algo-rithm based on Markov chain model was proposed.This algorithm established a predicted motion vector set by making full use of the correlation between the motion vectors of frames and views.According to the transition probabilities of Markov chain model,test of the predicted motion vector are performed in advance.Then finish fast motion estimation by the early elimination conditions.Experimental results demonstrate that this algorithm is able to improve the speed by av-erage 99% and the PSNR decrease by average 0.16dB in motion estimation process compared with full search algorithm in the multi-view video sequences.There is a significant improvement in the motion estimation using this algorithm for multi-view video coding.…”
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Current approaches to development of real-time qPCR test-kits by M. I. Doronin, D. V. Mikhalishin, A. V. Sprygin, A. Mazloum, T. V. Zhbanova, K. N. Gruzdev, E. V. Chernyshova

“…Currently fluorescent quantitative real-time polymerase chain reaction, which is a cutting-edge technology in genetic diagnosis, is used in different areas of molecularbiology. …”
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Digital business strategy of enterprise and its components by Liubov Lipych

“…Speed in the context of digital strategy can be considered in four dimensions: the speed of product introduction, the speed of decision-making, the speed of coordination and regulation of the supply chain, the speed of forming a network of relationships and its adaptation. …”
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WTO REFORM: BACKGROUND, CONDITIONS AND PROSPECTS by T. M. Isachenko

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Mining scraper conveyor sprocket replacement and repair evaluation method by LIU Huifeng, GAO Zhong, ZHAO Lijia

“…When the speed fluctuation, the contact force and the tension increase abnormally in the ring chain drive system, the sprocket should also be replaced in time to ensure the stable operation of the equipment. …”
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