Series - 1 [march- 2019]

Paper Title :: Natural Radioactivity Measurements of Basalt Rocks in Wadi Khuda Area, Southwest of Safaga, Eastern Desert of Egypt
Author Name :: Fuad Abdo AS-Subaihi || Shaban Harb || Taher Abdullah
Page Number :: 01-09
:: 10.9790/1813-0803010109   

By using gamma spectrometry NaI(Tl) "3×3", the concentrations of (226Ra, 232Th and 40K) were measured and its radiological hazards were presented in this paper for some basalt rock samples collected from Wadi Khuda Area Southwest of Safaga,Eastern Desert of Egypt. The ranges of concentration levels of 226Ra, 232Th and 40K were (4.29±0.22to 64.39±2.52) BqKg-1, (7.49±0.45to 39.27±2.40)BqKg-1and (283.24±24.36to1709.12± 147.024)BqKg-1, respectively.In the other side, the range values obtained from basalt rock under investigation were (47.22to216.23BqKg-1), (0.2to 0.8), ( 0.1 to 0.6),(0.4 to1.7), (23.63 to107.54 nGyh-1),(115.93 to527.58μSvy-1), (28.98to131.89μSvy-1),for radium equivalent activity, internal hazard index (Hin), external hazard index (Hex),representative level index Iγr, Dose rate (nGyh-1),indoor and outdoorAnnual effective dose (AED) in the air,respectively.........

Keywords : Absorbed dose, activity concentration, igneous rocks, Eastern Desert of Egypt, cancer risk.

@article{key:article,
author = {Fuad Abdo AS-Subaihi || Shaban Harb || Taher Abdullah},
title = {Natural Radioactivity Measurements of Basalt Rocks in Wadi Khuda Area, Southwest of Safaga, Eastern Desert of Egypt},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {01-09},
month = {March}
}
Paper Title :: The Inhibitive Effect of Carica Papaya Leaf Extract on the Corrosion of Mild Steel in Acidic (1MHCl) Medium
Author Name :: Udochukwu Mark || Ikechukwu B. Aharanwa || Chibuike S. Igwe
Page Number :: 10-20
:: 10.9790/1813-0803011020   

The effect of Carica papaya (pawpaw) leaf extract as an organic 'green' inhibitor on mild steel corrosion in 1M HClsolution was studied at ambient conditions. The biochemical species responsible for corrosion inhibition of the extract were determined both qualitatively and quantitatively by standard phytochemical methods. The species detected were alkaloids (1.93%), flavonoids (0.22%), saponins (19.74%), and tannins (3.82%). Six experimental setups were used, for the corrosion inhibition studies namely;distilled water (control 1),1M HCl (control 2), 5ml, 10ml, 15ml and 20ml extract in 1M HCl respectively. Weight loss technique of corrosion rate measurement was used for the experimental work...............

Keywords: Corrosion, Carica papaya, extract, inhibitor, phytochemical tests, mild steel, acidic medium, ANOVA

@article{key:article,
author = {Udochukwu Mark || Ikechukwu B. Aharanwa || Chibuike S. Igwe},
title = {The Inhibitive Effect of Carica Papaya Leaf Extract on the Corrosion of Mild Steel in Acidic (1MHCl) Medium},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {10-20},
month = {March}
}
Paper Title :: Analysis of Biological Aspects of Endeavour Shrimp (Metapenaeus endeavouri) in the waters of Cirebon Regency
Author Name :: Abdul Basith || Mennofatria Boer || Ario Damar || Mamarina || Achmad Fachrudin
Page Number :: 21-28
:: 10.9790/1813-0803012128   

Exploitation of M.endeavouri shrimp by net fishing gear is suspected to improve gradually marked with increased production in the last three years. Overfishing can threaten its sustainability. The purpose of this study is to examine biological aspects such as catch composition, catch distribution, size structure, first caught size (L50%), infinity length (L∞), sex ratio, gonad maturity level (GML), growth properties , and condition factors. In addition, made the concept of M.endeavouri shrimp fisheries resource management was made. The method used in sampling is the survey method with systematic random sampling. Shrimp samples are taken proportionally which is about 10% of the total catch. The results showed that the first size was caught (L50%) 25.5 mm carapace length. The length of infinity (L∞) of M.endeavouris shrimp is about 44.74 mm. Comparison of male and female sex ratios 1,1: 1...........

Keywords - Endeavour shrimp, biological aspects, Cirebon waters.

@article{key:article,
author = {Abdul Basith || Mennofatria Boer || Ario Damar || Mamarina || Achmad Fachrudin },
title = {Analysis of Biological Aspects of Endeavour Shrimp (Metapenaeus endeavouri) in the waters of Cirebon Regency},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {21-28},
month = {March}
}
Paper Title :: Physico-chemical Properties of Moulvi Bandh, Ambikapur, Sarguja with reference to Water Quality
Author Name :: Avinash Pratap Gupta || Prof. M. M. Ranga
Page Number :: 29-34
:: 10.9790/1813-0803012934   

This study was carried out to assess the water quality of Moulvi Bandh on the basis of Physico-chemical Properties of Ambikapur City, Sarguja, Chhattisgarh. Various parameters including Temperature, pH, EC (Electrical Conductivity), TDS (Total Dissolved Solids), TSS (Total Suspended Solids), TS (Total Solids),Acidity, DO (Dissolved Oxygen), and Free CO2. The results were calculated and compared with water quality standards given by WHO, BIS and EPA guidelines (Environmental Protection Agency). The overall water quality index value of Moulvi Bandh is 57.60 which show that the Bandh is moderately polluted. The water can be used for irrigation and household purposes.

Keywords : Physico-chemical Parameters, Water Quality, Water Quality Index (WQI).

@article{key:article,
author = {Avinash Pratap Gupta || Prof. M. M. Ranga},
title = {Physico-chemical Properties of Moulvi Bandh, Ambikapur, Sarguja with reference to Water Quality},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {29-34},
month = {March}
}
Paper Title :: Development of an Improved Intelligent Gas Leak Monitor Incoporating an Automatic Leak Notification System
Author Name :: Okereke Eze Aru
Page Number :: 35-45
:: 10.9790/1813-0803013545   

Liquefied Petroleum Gas (LPG) is a major source of cooking energy in Nigeria today, especially in the city areas because of its clean energy compare to firewood and charcoals used in the rural areas. There is always a danger of gas leakage as a result of negligence or failure from the regulating valve of the gas cylinder which poses great danger to the inhabitants of those houses, due to highly flammable nature of cooking gas. Cases of gas related fire has been on the rise and this can be avoided by employing a technology. In this work, a gas leakage detector system is proposed. The system is designed using microcontroller 8051, MQ-6 sensor, resistors, transistors, transformer, buzzer etc...............

Keywords: Gas Leak, Microcontroller, Liquefied Petroleum Gas (LPG), Sensors, Alarms, etc

@article{key:article,
author = {Okereke Eze Aru},
title = {Development of an Improved Intelligent Gas Leak Monitor Incoporating an Automatic Leak Notification System},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {35-45},
month = {March}
}
Paper Title :: Determining the Ecologic and Carbon Footprints of Adiyaman University Faculty of Engineering Students
Author Name :: Yusuf Başoğul
Page Number :: 46-52
:: 10.9790/1813-0803014652   

Ecologic footprint is a tool that is numerically expressing the negative impacts we have on earth and guiding us to make positive changes on our behaviours and attitudes towards the environment. Keeping in mind that achievements and awareness gained during university years can kick-start a lifelong change, this study has been conducted to get the faculty of engineering students of a university located in south-eastern Turkey to measure ecologic footprint and carbon footprint. The study took place during the 2018‐2019 academic year, involving 141 engineering students who have been subjected to individual Ecologic Footprint Survey. The survey provided general briefing to each participant about ecologic footprint and carbon footprint and suggestions have been made with regards to methods of reducing individual footprint. At the end of the study, the ecologic footprint and carbon footprint changes of the faculty of engineering students have been assessed, on the basis of their department, gender, age and the number of individuals in their families.

Keywords - Ecologic footprint, carbon footprint, ecologic awareness, sustainable life.

@article{key:article,
author = {Yusuf Başoğul },
title = {Determining the Ecologic and Carbon Footprints of Adiyaman University Faculty of Engineering Students},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {46-52},
month = {March}
}
Paper Title :: Smart Irrigation: An ICT Application in Agriculture
Author Name :: Ismaila Adeniyi Kamil || Olatunji Julius Ojoawo
Page Number :: 53-58
:: 10.9790/1813-0803015358   

Irrigation is done to ensure availability of water for plant growth. Traditional irrigation methods are not very efficient and require human operator for there day-to-day operations. Automatic irrigation systems are more efficient and less dependent on human operators and are therefore cheaper on the long run. Different approaches at developing automatic irrigation system have been reported with their different advantages and disadvantages.In this paper, a smart irrigation system which has capacity to remotely monitor essential farm variables such as soil moisture, and remotely operate the irrigation equipment is developed. Experimental tests on the developed system show that it is effective and could be adapted easily for practical use.

Keywords - Smart, Soil moisture, Plant growth, Automatic, Human operator.

@article{key:article,
author = {Ismaila Adeniyi Kamil || Olatunji Julius Ojoawo},
title = {Smart Irrigation: An ICT Application in Agriculture},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {53-58},
month = {March}
}
Paper Title :: Faculties'Attitudetoward Performance Evaluation and Its' Relationship with Job Motivation: 2018
Author Name :: Dr. Yousef Mehdipour
Page Number :: 59-62
:: 10.9790/1813-0803015962   

Introduction: Human factor productivity depends on their health, motivation, morale and commitment. Therefore, the recognition of effective factors can be helpful in increasing job satisfaction of faculties and in motivating them to promote educational and research goals. The overall goal of this research was to investigate the attitude of faculties of Zahedan University of Medical Sciences (ZAUMS) toward their performance evaluation and its relation with job motivation. Materials and Methods:The present study was a descriptive cross-sectional study. The statistical population were all faculty members of ZAUMS in the academic year 2017-2018 (336 people). Sample of study, based on Morgan table, was 200 faculties that selected as simple random sampling method. Data has been collected by applying the standard questionnaire............

Keywords - Faculty;Job Motivation; Performance Evaluation; University.

@article{key:article,
author = {Dr. Yousef Mehdipour},
title = {Faculties'Attitudetoward Performance Evaluation and Its' Relationship with Job Motivation: 2018},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {59-62},
month = {March}
}
Paper Title :: Numerical study of the process of calcinations small-grained limestone in a fluidized bed of inert granular material
Author Name :: Kolesnyk V.V. || Orlyk V.M. || Zhaivoronok V.A. || Kostogryz K.P. || Sobchenko V.V.
Page Number :: 63-67
:: 10.9790/1813-0803016367   

The results of mathematical modeling of the process of production of highly effective sorbent by the method of calcination of small-grained limestone particles in a fluidized bed of inert granular material are given. Dynamic characteristics of the main parameters of the obtained sorbent - total porosity and specific surface in the working range of changes in the technological parameters of the calcination process and the variation of the initial porosity and the pore diameter of the raw limestone - are constructed. The obtained results allow to determine at the design stage the initial data for the hardware and technological design of the process of calcination of small-grained limestone.

Keywords : limestone, calcium oxide, sorbent, specific surface, porosity, fluidized bed.

@article{key:article,
author = {Kolesnyk V.V. || Orlyk V.M. || Zhaivoronok V.A. || Kostogryz K.P. || Sobchenko V.V.},
title = {Numerical study of the process of calcinations small-grained limestone in a fluidized bed of inert granular material},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {63-67},
month = {March}
}
Paper Title :: Existence of Swidden Agriculture in a Small Island
Author Name :: Sitti Rosmalah || Weka Widayati || La rianda || Dasmin Sidu
Page Number :: 68-75
:: 10.9790/1813-0803016875   

Wawonii Island is one of the small islands in Southeast Sulawesi Province whose entire region represents one Regency in Southeast Sulawesi, namely Konawe Kepulauan Regency. The people of Wawonii Island are people who are more likely to choose to live farming and use existing forest resources than being fishermen, whereas generally they live in coastal areas. This is supported by the fact that Wawonii Island holds a large amount of potential, especially the potential of forest resources which if managed wisely will be able to provide welfare for people living around the forest, especially swidden agriculture who cultivate forest land with local wisdom that can ensure the sustainability of forest ecosystems also means sustainability human life on the island. In fact, existing forests have suffered a lot of damage due to exploitation for the sake of clearing land for plantations and mining and the occurrence of illegal logging by a number of irresponsible individuals..............

Keywords: Existence; swidden agriculture; small island

@article{key:article,
author = {Sitti Rosmalah || Weka Widayati || La rianda || Dasmin Sidu},
title = {Existence of Swidden Agriculture in a Small Island},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {68-75},
month = {March}
}
Paper Title :: The influence of Yield criterion on springback prediction in V-bending process
Author Name :: Peter Mulidrán || Emil Spišák || Miroslav Tomáš || Marek Vrabeľ || Miroslav Greš
Page Number :: 76-79
:: 10.9790/1813-0803017679   

To achieve precise springback prediction, it is important to describe correctly stress and strain state during the forming process and after the load removal. The accuracy of the springback prediction depends on the material model, which describes the deformation behavior of steel sheets. In each sheet metal forming process, the steel, in this case deep drawing quality steel DC06 exhibits springback effect, which is governed by strain recovery of material after the load removal. In this work, numerical simulation of a V-shape part bending was performed and compared with experimental data. Springback is related to many parameters like forming conditions, tool geometry and material properties such as sheet thickness, yield stress, work hardening, strain rate sensitivity and elasticity modulus............

Keywords - V-bending, springback prediction, sheet metal forming, numerical prediction

@article{key:article,
author = {Peter Mulidrán || Emil Spišák || Miroslav Tomáš || Marek Vrabeľ || Miroslav Greš },
title = {The influence of Yield criterion on springback prediction in V-bending process},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {76-79},
month = {March}
}
Paper Title :: Simulation Techniques used for Modeling Horizontal Wells andThe Role of Grid Refinement
Author Name :: Saleh Ahmed || Fathi Elldakli || Phillip McElroy
Page Number :: 80-84
:: 10.9790/1813-0803018084   

There have beensignificant technologies improvements since the oil industry first began drilling horizontal wells. However, the greatest obstacle is identifying suitable technology that can be used successfully in a specific reservoir. Selecting the best technology is a complicated process that requires simulation techniques combined with dynamic performance. Dynamic performance is modeled using numerical techniques, which can become an arduous task. This leads to an increase in well productivity or injectivity which surpasses the capabilities of vertical wells. This paper reviews studies that have used a number of different simulation techniques to accurately model horizontal wells. These techniques have been used to model different aspects of the recovery process, including completion, simulation, production, and enhanced oil recovery. These techniques can be used to solve complex problems with minimum costs in money and time.

Keywords - Local grid refinement;Applied simulation techniques for horizontal wells.

@article{key:article,
author = {Saleh Ahmed || Fathi Elldakli || Phillip McElroy},
title = {Simulation Techniques used for Modeling Horizontal Wells andThe Role of Grid Refinement},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {80-84},
month = {March}
}

Series - 2

Paper Title :: Mechanical Behaviour of Basalt/Carbon/Aluminium Fiber Metal Laminates – An Experimental Study
Author Name :: M.S. Santhosh || R. Gunasekaran || R. Sasikumar || S. Sarathkumar || Govindaraj Sasi Kumar || K. Ranjith Kumar || K. Sasi Kumar
Page Number :: 01-07
:: 10.9790/1813-0803020107   

Tailorable nature of composites plays a vital role in the development of advanced functional graded engineering materials. Especially sandwich composites made with fiber reinforcement and metal core (Al or Steel) grabs significant attention among worldwide material researchers due to its excellent mechanical, thermal and damping characteristics. Applications of metal core fiber laminates are inevitable in the various engineering industries like automobile, aviation and structural components due to its remarkable strength to weight ratio. The present investigation focusing on the study of mechanical behaviour of carbon/basalt fiber reinforced vinyl ester matrix composites with the aluminium core plate. Hybrid composite fabricated by open mould process, tensile, impact and flexural tests were done as per ASTM standards. Results obtained through various experiments were reported for analysis with scanning electron microscopic images.

Keywords : Fiber Metal Laminates, Vinyl Ester, Fiber Reinforced Composites, Carbon, Basalt, Aluminium Plate, Polymer Composites.

@article{key:article,
author = {M.S. Santhosh || R. Gunasekaran || R. Sasikumar || S. Sarathkumar || Govindaraj Sasi Kumar || K. Ranjith Kumar || K. Sasi Kumar},
title = {Mechanical Behaviour of Basalt/Carbon/Aluminium Fiber Metal Laminates – An Experimental Study},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {01-07},
month = {March}
}
Paper Title :: Industrial Engineering Management – THE key skill for the Digital Age
Author Name :: Erich Markl || Maximilian Lackner
Page Number :: 08-22
:: 10.9790/1813-0803020822   

In this article, concepts and the state-of-the-art of engineering management education and practice with a focus on modern manufacturing are reviewed and discussed. Production is becoming digital, and there is an increasing demand for engineering management, at the interface between the business world and the engineering world, where multi- and interdisciplinary experts in management and technical fields are needed to solve the challenges ahead. A solid university education in engineering and management tools and methods, balanced and integrated, coupled with industrial exposure and experience, will yield well-trained "engineering managers" fit for the changing workplace determined by Industry 4.0. Standardized training can bring out variance needed to excel consistently both from a personal and an organizational perspective in a competitive market place with technical solutions.

Keywords: Industry 4.0, engineering management, technology, manufacturing, digitization, technical leadership

@article{key:article,
author = {Erich Markl || Maximilian Lackner},
title = {Industrial Engineering Management – THE key skill for the Digital Age},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {08-22},
month = {March}
}
Paper Title :: Estimating of Carbon Storage of Peatlands and Main Hazards Related to the Utilization and Management of Peatlands in Lower U Minh National Park, Ca Mau Province, and Vietnam
Author Name :: Phan Truong Khanh || Tran Thi Hong Ngoc
Page Number :: 23-29
:: 10.9790/1813-0803022329   

Along with storing large quantities of carbon, peatlands also play an important role in the retention, purification and release of water and in the mitigation of droughts and floods. In Lower U Minh melaleuca forest, in the past peatlands have been decreasing very quicklydue to the burning forest and the agriculture activities. So, peatlands have become net sources of greenhouse gas (GHG) emissions. Changes peatlands may cause changes in net carbon storage. Currently, there is minimal carbon data for this national park. Therefore, our objectives were to measure C stocks of peatlands for this ecosystem. Forty five plots were established at a size of 1,600m2 (40mx40m) in the plantation Melaleuca forest and in the natural Melaleuca forest. In total, 225 peat samples were collected between 2015-2017.............

Keywords - Carbon storage, Peatland, Lower U Minh National Park.

@article{key:article,
author = {Phan Truong Khanh || Tran Thi Hong Ngoc},
title = {Estimating of Carbon Storage of Peatlands and Main Hazards Related to the Utilization and Management of Peatlands in Lower U Minh National Park, Ca Mau Province, and Vietnam },
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {23-29},
month = {March}
}
Paper Title :: Modeling and Simulation of Smart Grid System For Urban Electricity Distribution Network
Author Name :: Muhammad Fahmi Faisal || Redi Ratiandi Yacoub || Purwoharjono || Fitri Imansyah
Page Number :: 30-38
:: 10.9790/1813-0803023038   

This research reviews and analyzes the impact of the application of smart grid systems on electrical systems compared with conventional networks in the form of models and simulations. The software used for electrical simulation is ETAP Power Station. The first stage of the simulation was by making Pontianak Single Line Diagram Modeling on three types of distribution networks namely High Voltage (150 KV), Medium Voltage (20 KV) and Low Voltage (380 V). The next step was to adjust the network equipment data and type of generator with the case studies reviewed. The second phase of the simulation was to interconnect the grid with a smart grid distributed generator in the form of a renewable energy generator. The simulation model was then analyzed by load flow analysis, short-circuit analysis.............

Keywords - conventional grid, single line diagram, distributed generator, smart grid, bus.

@article{key:article,
author = {Muhammad Fahmi Faisal || Redi Ratiandi Yacoub || Purwoharjono || Fitri Imansyah},
title = {Modeling and Simulation of Smart Grid System For Urban Electricity Distribution Network},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {30-38},
month = {March}
}
Paper Title :: Analysis of the factors that impact the development of the auto parts industry in the state of Tlaxcala Mexico
Author Name :: Irais Hernández Martínez || Crisanto Tenopala Hernández || Miguel Ángel Rodríguez Lozada
Page Number :: 39-42
:: 10.9790/1813-0803023942   

The rapid growth of the auto parts industry in the state of Tlaxcala in Mexico, leads us to ask ourselves: what have this state that makes it so attractive for the industries of this sector during the last years? With the purpose of knowing what these factors are, a research is carried out directly with the industry to identify them and then analyze them, ending with the interpretation of the results obtained in such a way that the most important ones are identified, as well as the areas of opportunity for improve existing.

Keywords : automotive growth, auto parts industry, Tlaxcala, automotive industry, automotive development, factor analysis.

@article{key:article,
author = {Irais Hernández Martínez || Crisanto Tenopala Hernández || Miguel Ángel Rodríguez Lozada},
title = {Analysis of the factors that impact the development of the auto parts industry in the state of Tlaxcala Mexico},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {39-42},
month = {March}
}
Paper Title :: A Study on the Potential of Electrical Energy based on Gasification Technology from Oil Palm Empty Fruit Bunch in Landak West Kalimantan
Author Name :: Sukardi || Purwoharjono || Seno D Panjaitan
Page Number :: 43-50
:: 10.9790/1813-0803024350   

The growth of oil palm plantations in Landak, West Kalimantan, Indonesia, has greatly increased. Fresh fruit bunches (FFB) of oil palm have been produced at 2,148,210.62 tons in Landak region in 2011-2016. This directly increases the production of crude palm oil (CPO) in palm oil mills (POM). However, the increase in oil palm processing has resulted in increased solid and liquid wastes. One of the solid wastes produced in 2011- 2016 was the empty fruit bunches (EFB), which amounted to 322,232 tons. Nowadays, a small amount of EFB is used for compost, but most of it is still disposed of in landfills so it is less useful and even causes environmental pollution. For this reason, this paper examines the potential utilization of EFB from the processing of POM to produce electrical energy based on gasification technology..........

Keywords: Biomass energy, crude palm oil (CPO), empty fruit bunches (EFB), gasification, Syngas

@article{key:article,
author = {Sukardi || Purwoharjono || Seno D Panjaitan},
title = {A Study on the Potential of Electrical Energy based on Gasification Technology from Oil Palm Empty Fruit Bunch in Landak West Kalimantan},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {43-50},
month = {March}
}
Paper Title :: New Approach of Calculation for Malaysia Shariah Composite Index
Author Name :: Nashirah Abu Bakar || Sofian Rosbi
Page Number :: 51-59
:: 10.9790/1813-0803025159   

The objective of this study is to develop index for shariah compliant companies in Malaysia Stock Exchange. The purpose of Malaysia Shariah Composite Index (MSCI) is to provide indicator for market condition in Malaysia especially for Shariah compliant companies that issued stock as their financial asset. The method implemented in developing index is using free-float market capitalization with using value on 1st January 2019 as benchmark value.The benchmark of index is set on 1st January 2019 that indicates value of index is 100 at this data point. The observation period is involving 48 daily observation period from 1st January 2019 until 7th March 2019. The descriptive statistics shows mean value of shariah index is 99.4582 and standard deviation is 1.07189..............

Keywords - Shariah Index, Malaysia Stock Exchange, Islamic Investment, Stock Price.

@article{key:article,
author = {Nashirah Abu Bakar || Sofian Rosbi},
title = {New Approach of Calculation for Malaysia Shariah Composite Index},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {51-59},
month = {March}
}
Paper Title :: Plant Species Diversity in the Melaleuca Forest Ecosystem of Lower U Minh National Park in Vietnam
Author Name :: Phan Truong Khanh || Tran Thi Hong Ngoc
Page Number :: 60-68
:: 10.9790/1813-0803026068   

The effects of land use changes, burning foreest and forest fragmentation on plant species diversity in Lower U Minh Narional Park were reviewed. Forty five plots were established at a size of 1,600m2 (40mx40m) in the plantation Melaleuca forest and in natural Melaleuca forest. The number of species, diameter at breast height (DBH) for woody trees, other living forms (woody trees, shrubs, vines, herbaceous) were determined in each plot. The results showed that The lower U Minh national park has been dominated by M. cajuputi trees with 88.64% of the total area and rest was comprised of bare soil, canals and grassland. There are 104 plant species of natural plants belonging to 48 different families were found. Among them, there are 12 woody tree species, 4 shrub species, 4 herbaceous species, 38 grass species, 27 liana species, 13 aquatic weed species, and 6 fern species were recorded.

Keywords : Melaleuca; Plant diversity, Lower U Minh National Park.

@article{key:article,
author = {Phan Truong Khanh || Tran Thi Hong Ngoc},
title = {Plant Species Diversity in the Melaleuca Forest Ecosystem of Lower U Minh National Park in Vietnam},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {60-68},
month = {March}
}
Paper Title :: The Effect of Material Heat Treatment on Hardness and Corrosion Rate in 319 as Aluminum Alloy
Author Name :: Ade Hermawan
Page Number :: 69-76
:: 10.9790/1813-0803026976   

The hardness value for the 319 as cast aluminum alloy with an average value of 45.2 HRB and the average hardness value for the 319 aluminum alloy treated with 63.6 HRB there is an increase in the hardness value of 71%, the corrosion rate for the 319 as aluminum alloy is as big as 0.1655 mpy while for aluminum heat treatment alloy has a corrosion rate of 0.0226 mpy, there is an increase in corrosion resistance of 7.3% so that the corrosion resistance of the 319 aluminum alloy heat treated is better than the corrosion resistance of the 319 as aluminum alloy, thus heat treatment on material has a positive effect on the value of hardness and corrosion rate of the material.

Keywords: Scrap, Hardness, Heat treatment, Corrosion rate

@article{key:article,
author = {Ade Hermawan},
title = {The Effect of Material Heat Treatment on Hardness and Corrosion Rate in 319 as Aluminum Alloy},
journal = {The International Journal of Engineering and Science},
year = {2019},
volume = {08},
number = {3},
pages = {69-76},
month = {March}
}