Simulation of sub-drains performance using visual MODFLOW for slope water seepage Problem

Numerical simulation technique was used for investigating water seepage problem at the Botanic Park Kuala Lumpur. A proposed sub-drains installation in problematic site location was simulated using Modular Three-Dimensional Finite Difference Groundwater Flow (MODFLOW) software. The results of simulation heads during transient condition showed that heads in between 43 m (water seepage occurred at level 2) until 45 m (water seepage occurred at level 4) which heads measurement are referred to mean sea level. However, elevations measurements for level 2 showed the values between 41 to 42 m from mean sea level and elevations for level 4 between 42 to 45 m from mean sea level. These results indicated an increase in heads for level 2 and level 4 between 1 to 2 m when compared to elevations slope at the level 2 and level 4. The head increases surpass the elevation level of the slope area that causing water seepage at level 2 and level 4. In order to overcome this problems, the heads level need to be decrease to 1 until 2 m by using two options of sub-drain dimension size. Sub-drain with the dimension of 0.0750 m (diameter), 0.10 m (length) and using 4.90 m spacing was the best method to use as it was able to decrease the heads to the required levels of 1 to 2 m

Simulation of sub-drains performance using visual MODFLOW for slope water seepage Problem

Numerical simulation technique was used for investigating water seepage problem at the Botanic Park Kuala Lumpur. A proposed sub-drains installation in problematic site location was simulated using Modular Three-Dimensional Finite Difference Groundwater Flow (MODFLOW) software. The results of simulation heads during transient condition showed that heads in between 43 m (water seepage occurred at level 2) until 45 m (water seepage occurred at level 4) which heads measurement are referred to mean sea level. However, elevations measurements for level 2 showed the values between 41 to 42 m from mean sea level and elevations for level 4 between 42 to 45 m from mean sea level. These results indicated an increase in heads for level 2 and level 4 between 1 to 2 m when compared to elevations slope at the level 2 and level 4. The head increases surpass the elevation level of the slope area that causing water seepage at level 2 and level 4. In order to overcome this problems, the heads level need to be decrease to 1 until 2 m by using two options of sub-drain dimension size. Sub-drain with the dimension of 0.0750 m (diameter), 0.10 m (length) and using 4.90 m spacing was the best method to use as it was able to decrease the heads to the required levels of 1 to 2 m

Pengaruh Promosi, Kepercayaan dan Kesadaran Merek terhadap Keputusan Nasabah Menggunakan Produk Tabungan Haji (Mabrur) Bank Syariah Mandiri Kcp. Sawangan Kota Depok

. Pengaruh Promosi, Kepercayaan dan Kesadaran Merek Terhadap Keputusan Nasabah Menggunakan Produk Tabungan Haji (Mabrur) Bank Syariah Mandiri KCP. Sawangan Kota Depok. Tujuan dari penelitian ini adalah untuk melihat pengaruh promosi, kepercayaan dan kesadaran merek terhadap keputusan nasabah menggunakan produk tabungan haji (mabrur) studi kasus Bank Syariah Mandiri KCP. Sawangan Kota Depok. Penelitian ini menggunakan purposive sampling dengan 100 responden yaitu nasabah yang menggunakan produk tabungan haji (mabrur). Data yang diolah dalam penelitian ini menggunakan analisis regresi linear berganda. Berdasarkan hasil, diperoleh persamaan regresi: 2.515 + 0.189X1 + 0.359X2 + 0.149X3 + e, berdasarkan analisis data statistik, indikator dalam penelitian ini valid dan variabel reliabel. Dalam uji asumsi klasik, tidak terjadi multikolinieritas dan heteroskedastisitas, serta data berdistribusi normal.Hasil penelitian menunjukkan bahwa secara parsial dan simultan variabel kualitas promosi, kepercayaan dan kesadaran merek berpengaruh signifikan terhadap keputusan pembelian. Kata Kunci: Promosi, Kepercayaan, Kesadaran Merek dan Keputusan Pembelian. Abstarct. Effect Promotion, Trust and Brand Awareness Decision On Savings Products Customers Using The Hajj (Mabrur) Bank Syariah Mandiri KCP. Sawangan Kota Depok. The purpose of this study was to observe the effect of promotions, trust and brand awareness of the customer's decision to use a savings product Hajj (mabrur) case studies of Bank Syariah Mandiri KCP. Sawangan. This study using purposive sampling of 100 respondents, customers who use the product hajj savings (mabrur). The processed data in this study using multiple linear regression analysis. Based on the results, regression equation: 2,515 + 0.189X1 + 0.359X2 + 0.149X3 + e, based on statistical data analysis, indicators in this study is valid and reliable variable. In the classical assumption, does not happen multikolinieritas and heteroskedastisitas, as well as the normal distribution of data. The results showed that partial and simultaneous sale of variable quality, trust and brand awareness significantly influence purchasing decisions

SIMULATION OF PHOTON ATTENUATION THROUGH ALUMINIUM USING E-RADIATION SIMULATOR (EGS5 CODE)

Radiation education is necessary for a wide variety of people, such as radiation workers and students of medical imaging. In order to understand radiation behaviour inside the material, we have developed an e-radiation simulator by using Monte Carlo simulation programme (EGS5 code). Anyone who has no programming knowledge will able to simulate photons in a material through this easy to use web-based environment radiation simulator. To validate our simulator, we calculate photon linear attenuation coefficient (µ) of an aluminium material which commonly used as a filter in diagnostic radiology. For the sake of comparison, we calculate at high energy photon of 662 keV to compare our results of µ with the XCOM database and literature. Consequently, the results from the developed simulator comparable with the database and literature for the case of photon attenuation study

The enhancement of heavy metal removal from polluted river water treatment by integrated carbon-aluminium electrodes using electrochemical method

The heavy metal removal enhancement from polluted river water was investigated using two types of electrodes consist of integrated carbon-aluminium and a conventional aluminium plate electrode at laboratory-scale experiments. In the integrated electrode systems, the aluminium electrode surface was coated with carbon using mixed slurry containing carbon black, polyvinyl acetate and methanol. The electrochemical treatment was conducted on the parameter condition of 90V applied voltage, 3cm of electrode distance and 60 minutes of electrolysis operational time. Surface of both electrodes was investigated for pre and post electrolysis treatment by using SEM-EDX analytical technique. Comparison between both of the electrode configuration exhibits that more metals were accumulated on carbon integrated electrode surfaces for both anode and cathode, and more heavy metals were detected on the cathode. The atomic percentage of metals distributed on the cathode conventional electrode surface consist of Al (94.62%), Zn (1.19%), Mn (0.73%), Fe (2.81%) and Cu (0.64%), while on the anode contained O (12.08%), Al (87.63%) and Zn (0.29%). Meanwhile, cathode surface of integrated electrode was accumulated with more metals; O (75.40%), Al (21.06%), Zn (0.45%), Mn (0.22), Fe (0.29%), Cu (0.84%), Pb (0.47%), Na (0.94%), Cr (0.08%), Ni (0.02%) and Ag (0.22%), while on anode contain Al (3.48%), Fe (0.49 %), C (95.77%), and Pb (0.26%). According to this experiment, it was found that integrated carbon-aluminium electrodes have a great potential to accumulate more heavy metal species from polluted water compare to the conventional aluminium electrode. Here, heavy metal accumulation process obviously very significant on the cathode surface

Investigation of dielectric constant variations for Malaysians soil species towards its natural background dose

The correlation of natural background gamma radiation and real part of the complex relative permittivity (dielectric constant) for various species Malaysian soils was investigated in this research. The sampling sites were chosen randomly according to soils groups that consist of sedentary, alluvial and miscellaneous soil which covered the area of Batu Pahat, Kluang and Johor Bahru, Johor state of Malaysia. There are 11 types of Malaysian soil species that have been studied; namely Peat, Linau-Sedu, Selangor-Kangkong, Kranji, Telemong- Akob-Local Alluvium, Holyrood-Lunas, Batu Anam-Melaka- Tavy, Harimau Tampoi, Kulai- Yong Peng, Rengam-Jerangau, and Steepland soils. In-situ exposure rates of each soil species were measured by using portable gamma survey meter and ex-situ analysis of real part of relative permittivity was performed by using DAK (Dielectric Assessment Kit assist by network analyser). Results revealed that the highest and the lowest background dose rate were 94 ±26.28 μR hr-1 and 7 ±0.67 μR hr-1 contributed by Rengam Jerangau and Peat soil species respectively. Meanwhile, dielectric constant measurement, it was performed in the range of frequency between 100 MHz to 3 GHz. The measurements of each soils species dielectric constant are in the range of 1 to 3. At the lower frequencies in the range of 100 MHz to 600 MHz, it was observed that the dielectric constant for each soil species fluctuated and inconsistent. But it remained consistent in plateau form of signal at higher frequency at range above 600 MHz. From the comparison of dielectric properties of each soil at above 600 MHz of frequency, it was found that Rengam-Jerangau soil species give the highest reading and followed by Selangor-Kangkong species. The average dielectric measurement for both Selangor-Kangkong and Rengam-Jerangau soil species are 2.34 and 2.35 respectively. Meanwhile, peat soil species exhibits the lowest dielectric measurement of 1.83. It can be clearly seen that the pattern of dielectric measurement for every soil at the frequency above 600 MHz demonstrated a specific distribution which can be classified into two main regions which are higher and lower between the ranges of 1.83 to 2.35. Pearson correlation analysis between the frequency of 100 MHz and 2.6 GHz with respect to exposure rate for every soil species was r = 0.38 and r = 0.51, respectively. This indicates that there was no strong correlation between both parameter, natural background dose and soils dielectric for each soils sample. This factor could be contributed by major and minor elements contained in each soils sample species, especially Ferum, Fe and Silica, Si

Stiffness modulus properties of hot mix asphalt containing waste engine oil

This study presents the effect of waste engine oil (WEO) on the mechanical properties of hot mix asphalt mixtures. It was added into mixture at 0%, 3%, 5%, 7%, 10% and 15% by weight of binder. The mechanical properties of the mixes were evaluated by conducting indirect tensile stiffness modulus (ITSM) at temperatures of 25C and 40C. The results indicated that modified mixes exhibited lower stiffness modulus with the increasing amount of WEO as well as testing temperature. The increasing amount of WEO was found to have a good linear correlation to the decreasing of stiffness modulus. The finding showed that the WEO has the significant role as a softening agent which affected the stiffness modulus even at low percentage

Overview of Leachability of Heavy Metals using Solidification/Stabilization Method Incorporated with Agricultural Wastes

Abstract.The solidification/stabilization (S/S) is one of the effective methods that are used for the heavy metals treatment. It was known that one of the main issues of this method is that the heavy metal is stayed inside the matrices, not destroyed nor adsorbed, which may cause serious problems for the environment once the matrices would be crashed. Agricultural wastes have shown a great capacity to the heavy metal adsorption from solid and liquid wastes. This paper reviews the incorporation of the agricultural wastes as heavy metals' adsorbents inside the matrices of the S/S method. In addition, changes in particle sizes, pre-treatment, temperature and other factors have also been discussed towards the heavy metal adsorption. Nevertheless, research regarding the incorporation of the agricultural wastes into the S/S method is very minimal, and almost all the previous researches were only focusing comprehensively on the leaching characteristics of the method. Introduction.Nowadays, Industrial production leaves enormous quantities of mineral wastes accompanied with toxic heavy metals like Cd, Hg, As and Pb. These heavy metals are generally considered the most toxic to humans and animals, without any beneficial effects to them. Thus, they may cause acute diseases for the human beings such as dullness, restlessness, irritability, anemia, neurological effects and other

Design and characterization of flat lens antenna using aperture-coupled microstrip patches

A planar discrete lens antenna is a low profile, light weight and cost effective solution to conventional and curved dielectric lenses. The basic theory of operation of flat lens antenna unit cell is to collimate the feed spherical electromagnetic incident wave into planar wavefront at the back of the aperture. Therefore, the array unit cell must be designed to establish the required phase adjustment. Flat lens antenna elements which are based on aperture-coupled microstrip patches are presented. The lens contains 7×7 elements with a diameter of 71 mm and operates in the X-band frequency range. The lens was experimentally validated and good agreement between simulation and measurement results were obtained. The achieved measured peak gain is 15.85 dB. This gives 6 dB gain enhancement for the system. The antenna 1-dB gain bandwidth and power efficiency are 7.8% and 58% respectively. A very good transmission phase shift of 340° is achieved with transmission coefficient of better than 2.25 dB. In addition, the measured radiation pattern results show that the antenna system has good symmetry between E and H plane with a half-power beamwidth of 16.2° and 16.6° in E-plane and H-plane respectively. Moreover, the proposed lens element employs a simple and less fabrication complexity mechanism for phase shift correction. Finally, the obtained results show that the proposed flat lens antenna is an attractive choice for the applications of wireless airborne systems such as VSAT (Very Small Aperture Terminal)

A common variant near TGFBR3 is associated with primary open angle glaucoma

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/ licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.Primary open angle glaucoma (POAG), a major cause of blindness worldwide, is a complex disease with a significant genetic contribution.We performed Exome Array (Illumina) analysis on 3504 POAG cases and 9746 controls with replication of the most significant findings in 9173 POAG cases and 26 780 controls across 18 collections of Asian, African and European descent. Apart from confirming strong evidence of association at CDKN2B-AS1 (rs2157719 [G], odds ratio [OR] = 0.71, P = 2.81 × 10−33), we observed one SNP showing significant association to POAG (CDC7–TGFBR3 rs1192415, ORG-allele = 1.13, Pmeta = 1.60 × 10−8). This particular SNP has previously been shown to be strongly associated with optic disc area and vertical cup-to-disc ratio, which are regarded as glaucoma-related quantitative traits. Our study now extends this by directly implicating it in POAG disease pathogenesis