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ISSN:2394-3661 | Crossref DOI | SJIF: 5.138 | PIF: 3.854

International Journal of Engineering and Applied Sciences

(An ISO 9001:2008 Certified Online and Print Journal)

Volume 7 Issue 2 (February2020)

S.No. Title & Authors Page No View
1

Title : Performance Monitoring Of Dams through Piezometers - A Case Study

Authors : Rajkumar Prasad, Mahabir Dixit

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Abstract :

This paper presents development of the pore-pressure measuring device as a tool in performance monitoring for study of behavior of dam. The installation of test apparatus involves numerous innovations that have been developed over the years, and the methods for such installation continue to be improved with each project. The emphasis in this presentation is on the development of the piezometer device. Dams impound large amount of water, and its failure may be catastrophic leading to large scale destruction of property and loss of human lives. In such case, instrumentation plays a vital role as any change in the structural behavior can be established well in time based on the data observed by the instruments and remedial measures can be taken up so as to avoid failure of the structure. Adequate instrumentation in earth fills and their foundations provide significant quantitative data indicating the magnitude and distribution of pore pressures and their variations with time and other patterns of seepage, zones of potential piping, proper functioning of the filter media and effectiveness of under seepage control measures.

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2

Title : Simulation on Heat Transfer Enhancement Characteristics of Inserted Multi-helical Spring

Authors : Ma Yuxiang, Liu Yongqi, Sun Peng

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Abstract :

In order to enhance the heat exchange effect of spring heat exchange tube, based on the traditional helical spring heat exchange tube, a new type of helical spring heat exchange tube was developed by changing the spring section into a square and contacting the spring with the inner wall of the heat exchange tube. The helical spring heat exchange tube was simulated by Fluent software, the influence of several springs inserted into the tube on the heat exchange effect was analyzed. The results show that: with the increase of the number of springs inserted into the tube, the velocity of the fluid in the spring heat exchange tube gradually decreases, and the pressure drop also gradually decreases, the velocity field gradually presents a symmetrical distribution along the central axis, the flow state of the fluid gradually tends to be stable, and the distribution of pressure field and temperature field in the tube is gradually uniform. When the Reynolds number was 20000, the heat transfer coefficient of the four-helical spring heat exchange tube was increased by 11.45W·m2·K-1 and pressure drop was decreased by 40.31Pa compared with that of single-helical spring heat exchange tube; when the Reynolds number was 40000, the heat transfer coefficient of the four-helical spring heat exchange tube was increased by 3.94W·m2·K-1 and pressure drop was decreased by 157.88Pa compared with that of single-helical spring heat exchange tube.

9-14
3

Title : Openings effects in reinforced concrete shear walls; a literature review on experimental and finite element studies

Authors : Ehsan Borbory

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Abstract :

One of the types of earthquake-resistant systems is the concrete shear wall system, which has attracted the attention of engineers due to its good performance in past earthquakes. But some architectural constraints force engineers to install openings in shear walls; thus, this will affect the behavior of the shear wall. Many researchers have conducted experimental and finite element studies for assessing the effects of openings in reinforced concrete shear walls. However, there is a lack of comprehensive comparisons between different studies. This paper reviews some most recent experimental and finite element studies available in the literature and presents a review of the main contributions. This literature review reveals that the seismic responses and the stiffness of structures are influenced by the size and location of the openings in the reinforced shear wall.

15-20
4

Title : Reliability Analysis of k-out-of-n: G System: A Short Review

Authors : Ragi Krishnan

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Abstract :

Reliability analysis of k-out-of-n: G system have seen a tremendous growth in the last few decades. This paper presents an overview of the research on reliability studies of k-out-of-n: G systems. Methods for reliability evaluation, lifetime distributions of failure rate of components and systems with different types of components are presented.

21-24
5

Title : Blockchain Technology, Challenges and Opportunities

Authors : Vijay Mathur, Ravinder Yadav

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Abstract :

Blockchain technology [1] poses a daunting challenge to democracy. It allows both participatory and decentralized governance, but is also the expression of unbridled liberalism, the enemy of democracy. In this paper, we are attempting to provide an overview of Blockchain, its characteristics and the challenges and opportunities of Blockchain technology.

25-27
6

Title : Renal function tests in patients with Cutaneous Leishmania after treatment with Glucantime

Authors : Ibrahim W. Hasani, Abdul-Razak Kotayni, Samer kabba

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Abstract :

Cutaneous leishmaniasis (CL) has historically been present in Syria, mainly in the western part of the country. The present study was conducted to evaluate kidney function parameters in patients infected with CL in Idlep-Syria. This is controlled study contain infected (60) and control (30) groups. The prevalence and distribution of infection were studied, kidney function testes were determined by colorimetric methods, (Biosystem ®). Among 100 of a total cases studied, the percent of infected cases are 60 % and not infected are 40%. The distribution of lesions on various parts of body in patients shows the highest percent of infection was in face (50%). There were highly significant increase in urea, uric acid and creatinine in infected group (p <0.0001) as compared to control one. In the war in Syria, the prevalence of infection was increased and had side effect on kidney parameter in infected patients treated with Glucantime.

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7

Title : The balancedness of N -complexes based on cotorsion pairs

Authors : Pinger Zhang

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Abstract :

Letbe a abelian ctegory, and (A,B) be a complete hereditary cotorsion pair on. We define relative cohomology groups based on (A,B) in the category of N-compl-

exes on. Especially we are devoted to consider the balance- dness of the relative cohomology functors.

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8

Title : Condensation of Inorganic Vapors during Cooling of Synthesis Gas for Gasification of Biomass

Authors : Mohammed Alswat

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Abstract :

This paper present a study for the condensation of inorganic species in a Biomass to Liquids (BtL) process. The experimental design was based on operating conditions similar to those of a biogas gasification plant mass and physical phenomena that occur during the condensation of aerosols. To obtain conditions simplified but representative of a BtL process, a potassium chloride (KCl) vapor and solid particles of carbon are cooled to different cooling speeds. These particles are then dipped in a dilution probe and the results are then analyzed using a Low-Pressure Electric Impactor (ELPI) and an electric mobility granulometer (SMPS). The results showed the importance of the phenomenon of direct condensation of KCl on the walls. Seeding with Graphite particles reduced the amount of KCl deposited on the walls.

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