Journal of University of Babylon for Engineering Sciences

Journal Information
ISSN / EISSN : 26169916 / 26169916
Current Publisher: University of Babylon (10.29196)
Total articles ≅ 81
Filter:

Latest articles in this journal

Ola Mahdi
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 207-213; doi:10.29196/jubes.v27i2.2339

Abstract:Bioactive glasses are silicate-grounded and can course of action a strong substance connect through the tissues. These biomaterials are exceptionally biocompatible and can shape a hydroxyapatite layer when embedded in the body or absorbed the recreated body liquid. Because of a few detriments, regular glass preparing technique, including softening of glass parts is supplanted by sol-gel strategy with a substantial number of advantages, for example, low handling temperature, higher immaculateness and homogeneity and along these lines better control of bioactivity. Bioactive glasses have a wide scope of utilizations, especially in dentistry. These glasses can be utilized as particulates or solid shapes and permeable or thick develops in various applications, for example, remineralization or extreme touchiness treatment. A few properties of bioactive glasses, for example, antibacterial properties can be advanced by including diverse components into the glass. Bioactive glasses can likewise be utilized to adjust diverse biocompatible materials that should be bioactive. This investigation surveys the critical advancements of bioactive glasses in dentistry. Besides, we will examine the field of bioactive glasses from starting to the present advancements, which incorporates preparing techniques, applications, and properties of these glasses.
Ahmed Sagban Saadoon, Kadhim Zuboon Nasser
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 265-274; doi:10.29196/jubes.v27i2.2347

Abstract:The aim of this review paper is to summarize available reports, papers, theses, dissertations and conference papers dealing with the performance of aluminum-concrete composite columns. Hollow aluminum sections filled with concrete have been used as composite columns due to their corrosion resistance, easy production, appearance and lightweight. Many researches were performed in the area of concrete-filled hollow sections (tubes). However, there are few researches have been performed on concrete-filled aluminum tubes. In this review, different available published papers are summarized to view the type of the studied aluminum-concrete columns and the main studied parameters that affecting the behavior of these composite columns. More than (190) specimens are collected and showed in this review.
Mohammed Khalid Ibrahim, Ahmed A. Hamad, Murad Obaid Abed, Riyadh Abdulhamza Mohammed
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 242-251; doi:10.29196/jubes.v27i2.2344

Abstract:The last few years witnessed an increased interest in utilizing field programmable gate array (FPGA) for a variety of applications. This utilizing derived mostly by the advances in the FPGA flexible resource configuration, increased speed, relatively low cost and low energy consumption. The introduction of FPGA in medicine and health care field aim generally to replace costly and usually bigger medical monitoring and diagnostic equipment with much smaller and possibly portable systems based on FPGA that make use of the design flexibility of FPGA. Many recent researches focus on FPGA systems to deal with the well-known yet very important electrocardiogram (ECG) signal aspects to provide acceleration and improvement in the performance as well as finding and proposing new ideas for such implementations. The recent directions in ECG-FPGA are introduced in this paper.
Ibtisam Ahmed Hasan, Iman Saleh Kareem, Duha Adil Attar
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 252-264; doi:10.29196/jubes.v27i2.2345

Abstract:A pin fins array as a heat sink along with a moist wood wool pad to serve as novel cooling system to cool PV panel has been used. The present cooling system was based on the evaporative cooling concept and extended area of heat transfer. The results gave enhancements in output power and panel’s efficiency about 32.7% and 31.5% respectively. This improvement in the module performance was attributed to the reduction in the operation temperature of the solar cell. The reduction in module temperature was about 26.05%.
Shaker A.Jalil, Sarhan A. Sarhan, Bshkoj S. Hussein, Jihan M. Qasim
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 214-222; doi:10.29196/jubes.v27i2.2340

Abstract:The variation between flow depth generated in front of gabion barrier and flow rate has been studied in open laboratory flume. Flow profiles have been observed for each of "Transition Flow" and "Overflow" regimes. Effects of gabion height and material coarseness on the upstream flow depth are studied by testing four different gabion heights and four different medium aggregate sizes. The analysis of experimental results showed that the relative decrease in flow depth varies between 38% and 17% for "Through Flow" type when material coarseness and discharge increase. In "Transition Flow" regime, increasing material coarseness and discharge causes an average decreases in relative flow depth of 7.6% and 4.4% for gabion heights 15cm and 30cm, respectively. Gabion begins to operate as an overflow weir when the average water depth to the gabion height (H/P) is 1.19. While the overall average increase in discharge relative to solid weir is 15%. Prediction relationships for flow depth upstream the gabion for each of the three flow regimes is suggested. Also, dimensionless relation to predict discharge coefficient are proposed with good accuracy.
Adnan K. Shathir, Layla Ali Mohammed Saleh, Sumayah Amal Al-Din Majeed
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 223-232; doi:10.29196/jubes.v27i2.2341

Abstract:Weather forecasting is an important issue in meteorology and scientific research.In this research, the Seasonal Auto Regressive.Integrated Moving Average.(ARIMA) model which is based on Box-Jenkins method was adopted to build the forecasting model. The max. Monthly temperature data for Kerbala city for the period (Jan.1980 to Dec.2016) was employed. The autocorrelation and partial autocorrelation functions for time series data from years 1980 to 2015 were used to identify the most appropriate orders of the ARIMA models. The validation test of these models were performed using the monthly max. Temperature of the year 2016. To calculate the model's accuracy and compare among them, statistical criteria such as MAE, RMSE, MAPE, and R2 were used. The model (2, 1, 2) × (1, 1, 1)12 gave the most accurate results and used to forecast the monthly max. Temperature for the period (2017 to 2021) for study region.
Sundus Abbas Jasim, Sajad Abd Al-Kadhum Mohsin, Abd Al-Kadhum Mohsin
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 233-241; doi:10.29196/jubes.v27i2.2342

Abstract:This paper studies the preparation of Copper powder from copper sulphate aqueous solution (CuSO4.5H2O), sulfuric acid (H2SO4) and copper chloride (CuCl2.2H2O) by using the process of electrodeposition. Process of Powder deposition has been investigated for copper powder; it is a fine layer on cathode electrode by using the value of different from time of deposition (15, 30, 45, and 60) min. it is noticed the weight of the powder rises with the rise of time of depostion. Diffractions of X-ray (XRD) revealed high crystallinity and pure copper powder not contain impurity or oxides. Optical microscopes have revealed the particles of copper have dendritic shapes. The size of Particles analyzer measured the size of a particle which is about (4.645) μm.
Ismael Murad
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 194-206; doi:10.29196/jubes.v27i2.2337

Abstract:In this paper both synchronous and asynchronous buck-converter were designed to work in continuous conduction mode “CCM” and to deliver small load current. Then the two topologies were tested in terms of efficiency at small load current by use of different values of switching frequencies (range from 150 KHz to 1MHz) and three separated values of duty-cycle (0.4, 0.6 and 0.8). Obtained results turns out that efficiency of both synchronous and asynchronous buck-converter “switching step-down voltage regulator” responds in a negative manner to the increase in the switching frequency. However, this impact is being stronger in synchronous topology because of magnifying effect of losses related to switching frequency compared to those related to conduction when working at small load currents; this behavior makes obtained efficiency of both topologies in convergent levels when they operated to deliver small output current especially when working with higher switching frequencies. Larger duty-cycle can rise up the efficiency of both topologies.
Mohammad T. Abo Al-Mikh, Sabah L. Assi, Hameed K. Abdul-Ameer
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 138-149; doi:10.29196/jubes.v27i2.2322

Abstract:Field experiment was conducted in the non-heated plastic house at Al-Mussaib Technical College in the autumn season 2016 to study the Response of sweet pepper Capsicum annuum L. (Qurtuba cultivar) to foliar spraying with two types of foliar commercial Potassium fertilizers in loamy sand soil. To study the effect of four levels of potassium fertilizer and micronutrients (0, 4, 6, 8 ml.L-1), four levels of potassium fertilizer and Sulfur KTS (0, 2, 4, 6 ml.L-1) and their interaction on some vegetative and flowering growth indicators, yield and its components. The experiment was designed according to the Randomized Complete Block Design (RCBD) and the averages were compared with the least significant difference (LSD), with a significant level of 5%. The result indicated to the excelling of the spraying treatment with potassium and micronutrient (8 ml.L-1) by giving it a significant level in increasing the averages of plant height, number of branches, leaf area, dry weight for total vegetative, number of flowers in plant, percentage of fruit set, the leaves content of (chlorophyll, nitrogen, Phosphorus and potassium), early and total yield, the content of vitamin C, and percentage of Total Soluble Solids, with an increasing percentage of (19.47, 29.54, 16.68, 30.01, 11.26, 24.09, 38.16, 24.36, 16.67, 34.00, 21.87, 20.27, 50.46, 45.96, 39.33, 70.85%), respectively, compared to control treatment. Which is the same behavior as spraying treatment with potassium fertilizer and sulfur, where treatment (4 ml.L-1) was excelled in all the above traits, where the percentages of increasing were (31.72, 53.53, 49.88, 15.82, 14.84, 24.54, 19.79, 36.73, 21.05, 47.55, 24.53, 19.07, 49.43, 48.01, 30.29, 36.56%), respectively, compared to the control treatment. As for interaction treatments, it has showed excelling the spraying treatment with a mixture of (8 ml. L-1 + 4 ml. L-1) by giving it the highest values for all the above traits amounted of (109.5 cm, 6.4 branches, 25.3 dm2, 132.7 g, 62.7 flower, 43.9% 2.22%, 0.75%, 2.55%, 34.6 fruits, 108.3 g, 0.790 kg. plant-1, 3.747 kg. plant-1, 69.2 mg.100 ml-1, 10.4%), respectively.
Mustafa Al-Alwani, Steve Goodhew, Wei Pan
Journal of University of Babylon for Engineering Sciences, Volume 27, pp 50-63; doi:10.29196/jubes.v27i2.2321

Abstract:To assist in making Middle Eastern cities more sustainable a guiding methodological framework for local sustainability assessment is key to achieving a sustainable future. This paper investigates available frameworks and develops an approach to local sustainability assessment (LSA), by constructing a methodological framework utilising a combination of (bottom-up) and (top-down) approaches. This facilitates the formulation, selection and prioritisation of key indicators, which can then guide the assessment of a city’s sustainability at a local level in the Middle East. The paper finally applies the LSA methodological framework to the Iraqi city of Hilla and succeeds in formulating and ranking 57 useful and valid sustainability indicators.