International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366

Volume 42 (January-March 2020)

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1. ADAPTION OF CLIMATE CHANGES SCENARIOS BY CREATING ALGAE_BRINE SYSTEM IN ARID AND COASTAL REGION
by Tamer Elgohary, Rasha Elkholy & Esraa Samy
Abstract

The building sector is one of the largest consumers of natural resources and energy in the world. Designing buildings that emit less carbon dioxide or promote a smaller use of energy along its life cycle is an important strategy to improve the environmental performance of the building sector. The CLT, Cross Laminated Timber, is an innovative building material that consist in layer of timber glued and pressed 90 degrees from one layer to another, forming panels with an incredible resistance and performing as a sealing and structural material. Its capacity as an industrial building system allows the CLT to be used in many different constructions, from small to high-rise buildings. The use of timber as a building material is becoming more studied over the past years, as it appears as an alternative to the concrete building since its positive points related to installation, energy saving and cost. The aim of this research is to analyze the environmental performance of CLT as a building material, reviewing articles that compare buildings constructed with different materials according to different impact criteria. This review focuses on finding common elements between the studied articles and analyzing if the CLT, as a material applied to building, performs better than other materials. Hence, as could be seen from the analyzed papers, the CLT applied as a building material can reduce the embodied energy in the construction, GHG and CO2 emission. However, the adoption of CLT has some barriers as a construction material, like the lack of information and cost concerns, so it remains a frontier of knowledge for engineers, architects and the hole public.

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 43, Issue 1) - 2020

2. STATISTICAL INFERENCE FOR TWO RAYLEIGH POPULATIONS BASED ON JOINT PROGRESSIVE TYPE-II CENSORING SCHEME
by O. E. Abo-Kasem
Abstract

The objective of our study was to assess the body composition of the active populations of the hinterland in relation to the activity practiced. This study involved 513 subjects stratified by age and male sex, divided into three activities, namely: hunting, agriculture and fishing, subjects followed the following measures: It appears that significant differences were noted between fishermen, hunters and farmers for a similar age group. For example, fishermen aged 30-39 years showed significant superiority in weight, muscle mass, body volume and body water. Finally, the evolution of interest parameter values from 30 to 60 years was increasing for the percentage of fat mass (PCTG) and the total amount of subcutaneous fat (GSHQ). On the other hand, it was decreasing for data from other variables. Revenue-generating activities depend on physical capacity.

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 43, Issue 1) - 2020

3. IMPROVED ESTIMATION OF RESERVES IN GAS CONDENSATE RESERVOIRS
by Joseph James Olushola and Sunday Isehunwa
Abstract

Estimating Gas condensate reserves and predicting their performance has been an area to reconcile with in the industry today. The general method of estimating the volume of gas (reserves) in a gas reservoir is the Gas Material Balance (P/Z against Gp plot). This method basically involves computing gas compressibility factors (z) at different pressures during production from the reservoir. Condensate reservoirs exhibit two phase occurrence as reservoir pressure is depleted below dew point, hence posing a challenge to accurately estimating the compressibility factor (z factor) to be used for the plot. This may ultimately result in underestimating or overestimating the Gas-Initially-In-Place in such reservoirs. The reservoir fluid acquired from the field is used in experimental Constant Volume Depletion simulation to acquire data representing the actual reservoir depletion which is validated with observed minimal deviations and presented in the PVT reports. To replace the need for time consuming and complicated experiments, it was attempted to develop a relationship or model to determine the best estimates of the two-phase compressibility factors at different pressures. In this paper, the Peng-Robinson's equation of state is employed to determine the different phase compressibility factors and combined in proportions with respect to the overall mole fractions of the two phases as a weighting factor to obtain a general relationship for the two-phase compressibility factor of the reservoir fluid. The reserve estimates from this method were compared with the field data and other methods for possible deviations and corrections. It is conclusive that this project results in the highest accuracy in condensate reserves estimation with an average error of about 1%, whereas obtainable error using the Standing-Katz single phase z factor could be up to 8%.

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 43, Issue 1) - 2020