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Volume 6 Issue 7 (July 2019)

S.No. Title & Authors Page No View
1

Title : A Study of Point-to-Point Routing Problem in Mazes

Authors : Der-Cherng Liaw, Chien-Chih Kuo, Hung-Tse Lee

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Abstract :

In this paper, a three-step design is proposed to solve the point-to-point problem in a given maze. First, a well-known “depth-first” algorithm is adopted to find all the possible connection among grids in the maze with a graph structure. The obtained graph will then be simplified by deleting both of non-intersection and non-end grids. Such a step will largely decrease the computation load for constructing the path between the starting grid and the desired destination in the given maze. Finally, based on simplified graph the Dijkstra’s algorithm is employed to find the shortest path between the starting grid and the destination. Numerical results of three typical examples are obtained to demonstrate the success of the proposed design.

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2

Title : Characterization of Argon Plasma Treated Jute Fibre by Using Ultra Violet Visible Spectroscopy

Authors : Md. Masroor Anwer, Md. Zobaidul Hossen, Selina Akhter, Neaz Morshed, Pulak Talukder, Ashraful Alam, Md. Ariful Islam

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Abstract :

Jute fiber, a cellulosic and environmentally friendly fiber is treated with low temperature Argon plasma which is an ionized gas and an environment friendly surface modification technique. In the present study jute fiber was treated with low temperature Argon (Ar) plasma at different discharge power levels (50, 75, and 100 W) and exposure times (5, 10, 15 and 20 min.) with a flow rate of 0.2L/min. Ultraviolet Visible (UV-Vis.) spectra of raw jute and plasma-treated jute fibres at various exposure times with different discharge powers were recorded at room temperature in absorption mode using a spectrophotometer in the wavelength range of 200 to 1100 nm. The absorption spectra were recorded both for raw jute and plasma treated jute at various exposure times with different discharge powers. The UV-Vis. spectroscopic analysis reveals that the band gap of jute increases with the increase of discharge power as well as exposure time.

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3

Title : Direct Current Electrical Properties of Plasma Treated Jute

Authors : Md. Masroor Anwer, Md. Zobaidul Hossen, Selina Akhter, Neaz Morshed, Pulak Talukder, Ashraful Alam, Md. Ariful Islam

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Abstract :

Plasma is an ionized gas and low temperature plasma (LTP) treatment is an environment friendly surface modification technique. Jute fibers, a cellulosic and environmentally friendly fibers are treated with low temperature Argon plasma for 5, 10, and 15 minutes exposure times and at various discharge power levels of 50, 75 and 100 W. The current density-voltage (J-V) characteristics of tablet formed jute fibres were studied at room temperature in the voltage range of 5-100 V. It was seen that the J-V plots follow a power law of the form J α Vn, where n is a power index. It was also observed that with the increase of exposure times and discharge powers, the current flow through the tablet decreases. Moreover, resistivity increases with the exposure time as well as discharge power.

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4

Title : Beneficial Effect Of Biofertilizers And Chemical Fertilizer On The Growth And Biochemical Characters Of Green Gram (Vigna Radiata (L.) R. Wilczek)

Authors : N. Tensingh Baliah, P. Muthulakshmi, P. Rani

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Abstract :

Nitrogen and phosphorus are essential for the normal functioning of plants, as it participates in the composition several biomolecules. The continuous application of these elements through inorganic fertilizers to agricultural field affects the soil environment. It is directly affected the sustainable growth crop plants. The use of plant growth-promoting bacteria (PGPB) may be an alternative to reduce the usage of chemical fertilizer or inorganic fertilizers. Thus, using beneficial microorganisms that promote efficient growth from seedling to plant is relevant in the crop production system, especially in regard to the organic system, which is dependent on alternative inputs. Under nursery conditions, the applications of Azospirillum and PSB have the beneficial effect on growth, development and biochemical characters of green gram. The beneficial effect was higher in dual inoculation of biofertilizers rather than single application. Further, the effect was comparable to urea as inorganic fertilizer. Hence, the response of dual application of biofertilizers (Azospirillum and PSB) as organic fertilizer is comparable the urea as inorganic fertilizers.     

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5

Title : Uranium in Groundwater in The Sedimentary Aquifer of The Eastern Sector of Valle De La Cruz, Cordoba, Argentina

Authors : E. Matteoda, M. Blarasin, V. Lutri, D. Giacobone, L. Maldonado, F. Becher Quinodoz, J. Giuliano Albo, A Cabrera

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Abstract :

Uranium has a extensive distribution in nature, in granite rocks and in various mineral deposits. The presence in the environment is due to leaching and circulation from natural deposits but also from anthropogenic emissions. The objective of this work is to establish the origin and processes that may explain the Uranium dissolved in surface water and groundwater. Also, the Uranium natural background range was estimated and anomalies were detected using statistical methodologies. The uranium values in groundwater resulted generally low. The most likely natural source of uranium in the region would be the minerals that make up the rocks located in the Comechingones Mountains which are checked out to contain uranium and those belonging to the loessic deposits that are present throughout the basin. It was statistically estimated that the range of natural background values of total uranium in surface water and groundwater is between 0.47 and 17.3 μg/L, with a characteristic value (percentile 0.5) of  8.1 μg/L. Although in surface water, the total uranium values are within the natural background range, some groundwater samples show little high values anomalies, some of which were linked to agriculture and especially concentrated livestock, being uranium correlated to nitrates. The highest U concentrations are linked to more oxidizing sectors and higher pH. The lowest values are located in the wetland area, where the geochemical environment is characterized by a lower pH and a high organic matter content, which makes possible the U retention/precipitation as a consequence of possible formation of U- complexes with carbonates or organic matter or adsorption on iron and/or manganese oxides. Taking into account that the Argentine Food Code does not establish the Uranium limit value for human consumption, the international guideline was used (reference level of 30 μg/L), finding that 80% of the samples are below the mentioned limit.

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6

Title : Recovery of copper and cobalt in the comparative flotation of a sulfide ore using xanthate and dithiophosphate as collectors

Authors : Meschack Muanda Mukunga

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Abstract :

Copper and cobalt are two major metals used in industry. They play a role in widely many domains like that electricity, chemistry and electrochemistry. They are contained into several minerals like chalcopyrite, carrolite, chalcocite, etc. associated to pyrite. The froth flotation and behaviors of chalcocite and carrolite were investigated through many flotation tests in order to recovery copper and cobalt. This paper investigates the effect of potassium amyl xanthate (PAX) and sodium dibutyl dithiophosphate (DANA) performance on both copper and cobalt recovery in single roughing flotation. The effect of pH on the flotation is proposed. Some parameters were kept constant such as particle size d80=75 μm, pulp density 10% solids, impeller speed 1300 rpm, and PAX doses of DANA (105 g/t per each) as collectors, dose of DF250 (5 drops) as frother, dose of Na2SiO3 (200 g/t) as dispersant and depressant. Only the pulp pH was varied from the natural pH to 11, using Ca(OH)2 as regulator. According to results, PAX (105 g/t) was found as the best collector for recovery of copper both at natural pH and pH=11. At natural pH, the concentrate was found at 16.1% copper recovery with a yield of 99.63%. At pH=11, the concentrate was found at 16.1% copper recovery with a yield of 99.05%. For the recovery of cobalt, DANA (105 g/t) was found better as the collector at natural pH producing a concentrate at 0.51% cobalt recovery yield of 76.48%. At pH=11, PAX (105 g/t) was found better as the collector. The concentrate was found at 0.91% cobalt with a recovery yield of 85.13%.

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7

Title : Study on Thermal Shock Resistance of Plasma Sprayed ZrO2 Coating

Authors : Yuan Donglin, Li Wenge, Zhao Yuantao

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In this paper, the research progress of thermal shock resistance of zirconia ceramic materials is summarized, and the effects of different stabilizers on the thermal shock resistance of zirconia ceramic materials are briefly described. Through research, it is found that when adding cerium oxide with a mass fraction of 5.5% in the zirconia ceramic coating, the thermal expansion property of the coating can be minimized to improve the thermal shock resistance of the coating.; A 25% mass fraction of CeO2 is dissolved in the nano-yttria partially stabilized zirconia coating to form a stable tetragonal phase compound, which improves the thermal shock resistance of the coating.; adding a mass fraction of 3.0% SiO2 to the zirconia ceramic coating, the coating produces uniform pores, The modulus of elasticity and the stresses received are minimal, making the coating best resistant to thermal shock.

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8

Title : The Impact of Machine Learning on Modern Day Industries

Authors : J Qureshi

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Abstract :

Machine learning is more than just a buzzword. It is fundamentally changing the way that industries and the businesses within them carry out their everyday functions and activities from Finance and Recruitment right the way across to Sales and Marketing experience. Machine learning can be defined as a subset of artificial intelligence (AI) that relies on models and inference to effectively perform a specific task, using algorithms and scientific models. In a more practical sense, a machine learning system takes a set of data and uses it to answer a question and continues to ingest more and more data to teach itself over time and ultimately become able to answer future questions in an unsupervised manner. This paper explores how different industries and organizations are using machine learning algorithms in their day to day activities and where we see this transposed into our own lives.

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9

Title : Optimization Research of Injection-Production Mode in Fractured Buried Hill Reservoir

Authors : Yang Lina, Wang Xinran, Shi Changlin, Zhu Xiaolin, Gu Lihong

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Abstract :

Oilfield Z in Bohai bay is a fractured buried hill reservoir. Different from conventional sandstone reservoirs, the reservoir space is mainly divided into matrix and fracture system, which are quite different in reservoir physical properties and porous flow mechanism. It is easy to cause intra-layer interference of reservoir in the process of water flooding development. In order to improve the water flooding development effect in oilfield Z, and solve the problem of intra-layer interference of fracture and matrix system. Taking the actual characteristic parameters of oilfield Z as reference, the development effect of oilfield under different injection-production modes is predicted by numerical simulation software. The results show that under the mode of weak injection and forcible production, the swept volume of water flooding in the model is the largest and the remaining oil distribution is the least. In order to verify the reliability of the numerical simulation results, three-dimensional physical simulation experiments was carried out, which simulate the development effect under different injection-production mode. The results show that the water-free recovery period is longer, the water cut rises slowly and the oil recovery is higher under the mode of weak injection and forcible production. The results of physical experiments are consistent with those of numerical simulation. The research results are applied to actual oilfield production. The injection-production mode in the original scheme has been adjusted. Compared with the original scheme design, the effect of oilfield development is improved, and the increment of daily oil production for average single well reaches 83 m3. It can provide a reference for the study of injection-production mode in fractured buried hill reservoirs of the same kind.

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10

Title : Understanding Essentials of Work Ethics in Global Perspective

Authors : Dr. Diwan Taskheer Khan

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An organization’s success or failure largely depends on its employees work habit and the employee-employer relationship. So, it is important to look beyond surface reactions and understand the deeper implications of employees visible work habits. This is a descriptive paper in which author emphasizes on the understanding of importance of essentials of work ethics for employees and employers both.

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11

Title : Performance optimization analysis of the catamaran unmanned vehicle based on improved particle swarm optimization algorithm

Authors : Shi Yan, Yang Songling, Huang xiaoyu, Cai Chengqi, Cheng Zhanyuan

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The rapidity, maneuverability, seakeeping resistance and capsizing resistance of unmanned craft are important aspects for evaluating its performance. In the design of ship form, the influence degree of each performance should be considered comprehensively. In this paper a catamaran unmanned craft, determine the catamaran type unmanned craft performance (stability, quickness, maneuverability and seakeeping) evaluation function and comprehensive optimization objective function, the selected design variable and its scope and constraints, comprehensive optimization mathematical model is established, and the mathematical model and the four kinds of intelligent optimization algorithm, the combination of design and write a comprehensive optimization procedure is suitable for the catamaran unmanned craft, and a comprehensive optimization calculation and analysis. The optimal results are obtained by using a single particle swarm optimization algorithm with different computational algebra, fixed weight, maximum particle velocity and interval probability. Secondly, the particle swarm optimization algorithm was improved by using hierarchical and parallel strategies, and the hybrid algorithm and parallel computation of key design variables were carried out. By comparing the fitness function values, it is found that the optimization ability could be greatly improved by adding both hierarchical and parallel strategies. Finally, the optimal method and parameters of each system are obtained. The results show that the optimization system based on the improved particle swarm optimization algorithm is more efficient and the optimization results are reliable. The results can be used as a reference for solving the multi-objective, multi-variable and multi-constraint optimization problems of the performance optimization of the catamaran.

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12

Title : Research on standard block classification method of ship interim products based on fuzzy cluster analysis

Authors : Xi Li-yang, Wang yue, Zhang hai-yong, Liu Hao-ran, Ji Yong-jun, Liu Jian-feng

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In order to improve the standardization level of ship block manufacturing process, realize the standardization of block assembly process and working hours, and promote the development of digital hull block manufacturing, in this paper, hull blocks are taken as the research object of classification and grouping, and a fuzzy clustering analysis model is established by using the method of fuzzy clustering analysis. By inputting the production data information of the block process, the quantitative classification of hull blocks is realized. The results show that application of fuzzy cluster analysis to the formation of block families in accordance with the actual process requirements.

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13

Title : An optimization analysis of the rapidity and maneuverability of an inland SWATH-USV

Authors : Zhanyuan Cheng, Songlin Yang, Chengqi Cai, Wenpeng Cai, Xiaoyu Huang

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In this paper, we designed a kind of SWATH-USV through corresponding ship hull parameters selected as design variables to identify the SWATH performance as Optimal objective function and constraints for rapidity and maneuverability of SWATH. Via a multidisciplinary optimization design and analysis software, we analyzed and compared the single optimization of rapidity and the comprehensive optimization of rapidity and maneuverability. By comparing the fitness function values of the chaos algorithm and the hybrid algorithms of discrete genetic iterations, it was found that the genetic  algorithm of 5000 generations combined with comprehensive optimization of rapidity and maneuverability has the highest value, and the optimal optimization results of ship form parameters were generated.

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