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IDENTIFIKASI STRUKTUR BATUAN DAERAH RAWAN LONGSOR DI KECAMATAN CAMBA KABUPATEN MAROS BERDASARKAN METODE GEOLISTRIK KONFIGURASI WENNER Janna, Nur; Rahmaniah, Rahmaniah; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 4 No 1 (2017): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (609.816 KB) | DOI: 10.24252/jft.v4i1.10258

Abstract

This research was carried out on the Maros-Bone axis road in Sawaru Village, Camba sub-district, Maros district, South Sulawesi. This area is one of the areas prone to ground movement. This is because this area has a hilly and humid geographical condition. To find out the subsurface conditions, a research using the 2-dimensional type geoelectric resistivity method with the Wenner configuration. The results of the analysis and interpretation of the 2-dimensional cross section shows that the Camba sub-district which consists of clay rock, alluvium rock, gravel, compact sedimentary rock, and ground water and the point of dosing is at a depth of 8 meters. This layer has a resistivity value between the resistivity value of 2.71 5,m-5.78 Ωm which is characterized by water-saturated clay rocks and can cause landslides at any time because of the pressure from the top of the rock with a large value of resistivity. The slip plane is marked with clay rock at a depth of 4 meters-8 meters. This type of avalanche is a rotational avalanche.
IDENTIFIKASI JENIS DAN ARAH SESAR AKTIF DI WILAYAH SULAWESI SELATAN MENGGUNAKAN METODE HIPOCENTER DAN CENTROID (H-C) Lorna, Lorna; Rahmaniah, Rahmaniah; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 6 No 1 (2019): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1005.334 KB) | DOI: 10.24252/jft.v6i1.10181

Abstract

This study aims to identify the direction and type of active faults in the region of South Sulawesi by using the hypocenter and Centroid (HC). The data used is secondary data obtained from the hypocenter USGS, IRIS, GEOFON website and the data obtained from BMKG centroid that is processed using the focus mechanism to coordinate limit  LS –  BT. According to the research by the method of HC obtained by the type and direction of the active faults in the region I with the type of normal foult directed N6E/32 south-north , region II with the type of strike-slip fault directed N358E/83  north-south, Region III with the type of oblique fault directed N74E/16  southwest-northeast, Region IV with the type of normal foult directed  N109E/56 northwest- southeast and in the region of V with the type of strike-slip fault directed N332E/50 southeast-northwest.
IDENTIFIKASI DAERAH RAWAN LONGSOR DI KECAMATAN CAMBA KABUPATEN MAROS MENGGUNAKAN MIKROTREMOR Nirmayanti, Nirmayanti; Rahmaniah, Rahmaniah; Zelviani, Sri
JFT : Jurnal Fisika dan Terapannya Vol 4 No 2 (2017): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.739 KB) | DOI: 10.24252/jft.v4i2.10256

Abstract

A study entitled Identification of Landslide-Prone Areas in Camba Sub-District, Maros Regency Using Microtremor has been carried out. Microtremor is ground vibration other than earthquake, it can be a vibration due to human activities and natural activities. So microtremor can occur due to vibrations due to people who are walking, car vibrations, vibrations of factory machines, wind vibrations, ocean waves or natural vibrations from the ground. This study aims to determine how much the dominant frequency produced in microtremor measurements in landslide prone areas in Camba sub-district, Maros district. Data collection was carried out by 10 points. The data obtained were processed using geopsy software. Based on the research that has been carried out, it can be concluded that the measurement point that has the biggest landslide potential is at the measurement point that has the smallest dominant frequency value with a large dominant frequency of 0.73 Hz and the measurement point that has the smallest landslide potential is at the measurement point that has a value the largest dominant frequency with a dominant frequency of 8.27 Hz. The most dominant frequency value that appears is 5 Hz.
ANALISIS LAJU KOROSI BESI BETON DENGAN MEDIUM TANAH RAWA Rahmaniah, Rahmaniah; Amalia, Nurul; Ihsan, Ihsan
JFT : Jurnal Fisika dan Terapannya Vol 6 No 2 (2019): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.558 KB) | DOI: 10.24252/jft.v6i2.11724

Abstract

The research on corrosion rate analysis of concrete iron with swampsoil medium has been conducted. The aims of this study were to determine thecorrosion rate and the types of corrosion that occurred in concrete iron withswamp soil medium. The methods of this study are Weight Loss method, AtomicAbsorption Spectroscopy (AAS) test, and Scanning Electron Microscope-EnergyDispersion X-Ray (SEM-EDX). This study used a different immersion timevariant, such as 20 days, 40 days, 65 days, and without medium for 65 days. Theconcrete iron used in this study is concrete U-24 or plain concrete iron 10. Thecorrosion rate that occurs in iron concrete with swamp soil medium at 20 daysimmersion is 20977.5868 mmpy, 40 days immersion is 17721.9174 mmpy, 65days immersion is 16932. 9071 and 65 days without a medium are 3023.3793mmpy. The more time, the rate of corrosion become more slowly due to theinfluence of corrosion products that have occurred. The corrosion rate without themedium is slower than the corrosion rate with the medium. The types of corrosionthat occurs in concrete iron with swamp soil medium are crevice corrosion andpitting corrosion.
STUDI PENENTUAN STRUKTUR LAPISAN BATUAN DI DESA PADAELO’ KECAMATAN MALLAWA KABUPATEN MAROS SULAWESI SELATAN Rahmaniah, Rahmaniah; Hernawati, Hernawati; Nurvadillah, Nurvadillah; Aliasra, A Fany; Irmayanti, Irmayanti; Mulia, Ayu
JFT : Jurnal Fisika dan Terapannya Vol 6 No 1 (2019): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (586.37 KB) | DOI: 10.24252/jft.v6i1.10193

Abstract

It has been done field lecture with the title of study of rock structural layer in the village in the district Elo Mallawa Maros South Sulawesi Regency. The purpose of this field of lecture is to determine the structure of rock lining at the site of field lecture. The methods used in the course of this field are the methods of discussion, sampling and measurement. The tools used are geological compass, meter, hammer geology, GPS and ATK. Results obtained in the location of the lecture field is the presence of production stones consisting of several types of rock layers. The types of rock layers acquired are Rijang stone, sandstone, stone clay, and limestone. And the obtained stone layer has a strike and a dip N 353° E 64°.
KARAKTERISASI NANOSILIKA DARI ABU TERBANG (FLY ASH) PT. BOSOWA ENERGI JENEPONTO DENGAN MENGGUNAKAN METODE ULTRASONIC Desianti, Ika; Rahmaniah, Rahmaniah; Zelviani, Sri
JFT : Jurnal Fisika dan Terapannya Vol 5 No 2 (2018): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.395 KB) | DOI: 10.24252/jft.v5i2.10243

Abstract

This research aims at the process of making fly ash nanosilica using ultrasonic methods and to determine the characterization of nanosilica from fly ash. Many studies have shown that fly ash contains silica. The process of extracting silica from fly ash uses the reflux method extraction process. Meanwhile, the process of making silica nanoparticles uses ultrasonic methods. The ultrasonic method is a method for breaking particles by utilizing ultrasonic waves with a high frequency that is above 20 kHz. The resulting silica was divided into three with each different treatment, namely silica without sonication (TN), silica with sonication process for 60 minutes (N60) and for 120 minutes (N120). The silica each has a percentage of elements (%) ie 23.13%, 20.25% and 17.82%.
PENGARUH LINGKUNGAN KERJA DAN KOMPENSASI TERHADAP KINERJA KARYAWAN PT. PELABUHAN INDONESIA III (PERSERO) CABANG BANJARMASIN Rahmaniah, Rahmaniah; Rusidah, Siti
Bisnis Smart Vol 1, No 1 (2016): Business Invention, Volume 1, Nomor 1, April 2016
Publisher : Universitas lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (21.683 KB)

Abstract

The purpose of this study to prove the effect of partial and simultaneous Working Environment (X1), and compensation (X2) the Employee Performance (Y) PT. Pelabuhan Indonesia III (Persero) Branch of Banjarmasin. The study population numbered 237 employees and a sample was taken 96 respondents using sampling techniques stratified random sampling. The technique of collecting data using questionnaires and data analysis used is multiple linear regression. The test results prove partial Working Environment (X1) significantly affects employee performance amounted to 34.9%, and compensation (X2) significantly affects employee performance amounted to 44.5%. While there is simultaneously a significant influence at Work (X1) and compensation (X2) the Employee Performance. The magnitude of the effect is equal to 50.0%, while 50.0% is the influence of other variables notexamined by this study. The regression equation is formed Y=23 016+0225(X1)+0422(X2)+e
PENGARUH PEMBERIAN PUPUK ORGANIK DAN PUPUK ANORGANIK TERHADAP SERAPAN N, P, K OLEH TANAMAN JAGUNG PADA ULTISOL TAMBUNAN LANGKAT Oesman, Roswita; Harahap, Fitra Syawal; Rauf, Abdul; Rahmaniah, Rahmaniah
Jurnal Tanah dan Sumberdaya Lahan Vol 7, No 2 (2020)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2020.007.2.25

Abstract

Maize is a cereal commodity that has an important role in supporting food security and food diversification programs. The application of organic and inorganic fertilizers is one of the efforts to increase national maize productivity. This study was aimed to explore the effect of the application of organic and inorganic fertilizers on N, P and K uptake by maize in an Ultisol. Treatments tested were combinations of five levels of organic fertilizer application (0%, 100%, 75%, 50%, and 25% of recommended organic fertilizer dose), and five levels of inorganic fertilizer (0%, 100%, 75%, 50%, and 25% of recommended inorganic fertilizer dose). The twenty-five treatments were arranged in a factorial randomized block design with two replications. Results of the study showed that there was a relationship between N, P and K uptake by maize with maize shoot dry weight, root weight, and shell weight. The highest plant height, shoot dry weight, and root dry weight of the maize were obtained by the treatment of 100% of organic fertilizer. The highest maize shell dry weight and uptake of N, P was obtained by the in the treatment of 75% organic fertilizer.
PENGARUH APLIKASI TANDAN KOSONG KELAPA SAWIT DAN ARANG SEKAM PADI TERHADAP BEBERAPA SIFAT KIMIA TANAH PADA TOMAT Harahap, Fitra Syawal; Walida, Hilwa; Rahmaniah, Rahmaniah; Rauf, Abdul; Hasibuan, Rosmidah; Nasution, Ade Parlaungan
Agrotechnology Research Journal Vol 4, No 1 (2020): Agrotechnology Research Journal
Publisher : Perhimpunan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrotechresj.v4i1.41121

Abstract

The oil palm empty fruit bunches are solid waste produced from the processing of oil palms which have a large amount of potential to be used as compost and are expected to improve the physical, biological and chemical properties of the subsoil. This study aimed to evaluate the best combination between oil palm empty fruit bunches compost and rice husk charcoal on soil chemical properties in tomato. This research was conducted in Sona Village, Labuhanbatu Regency on December 2019-March 2020. Analysis of soil chemical properties was conducted at the Socfindo Seed Production and Laboratories (SSPL) Laboratory of PT. Socfin Indonesia. The study was conducted with a factorial randomized block design with 2 factors. The first factor was the application of oil palm empty bunches which consists of no oil palm empty bunches (control), 0.5 kg/polybag, 0.7 kg/polybag and 1 kg/polybag. The second factor was the application of rice husk charcoal which consists of non-husk charcoal (control), consisting of 0.2 kg/polybag and 0.4 kg/polybag. Data that had a significant effect after analysis of variance continued with DMRT at the level of ? = 5%. The results showed that application of oil palm empty fruit bunches (0.7 kg/polybag) significantly increased pH and C-organic. Application of rice husk charcoal (0.2 kg/polybag) significantly increased C-organic and P-available.
ANALISIS POTENSI DAN KARAKTERISTIK LIMBAH PADAT FLY ASH DAN BOTTOM ASH HASIL DARI PEMBAKARAN BATUBARA PADA PEMBANGKIT LISTRIK TENAGA UAP (PLTU) PT. SEMEN TONASA Yunita, Eka; Rahmaniah, Rahmaniah; Fitriyanti, Fitriyanti
JFT : Jurnal Fisika dan Terapannya Vol 4 No 1 (2017): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v4i1.15755

Abstract

A research was conducted at Steam Power Plant (PLTU) of PT. Semen Tonasa in which the coal burning resulting waste that is dust, fly ash and bottom ash. This research aimed to find out how much solid waste was resulted and how was the characteristic. Based on the secondary data obtained, it was found out that this Steam Power Plant results 96,07 ton of fly ash dan 41,62 ton of bottom ash in a day. Then a test was conducted in laboratory with elemental content analysis method using XRF showing that the highest element was silica and iron while as the calculation result of LOI content, it was found that fly ash had low content of carbon so that it is good to use as mixture of cement. Meanwhile, bottom ash contained high content of carbon so that it is fit to apply with polymer materials. Furthermore, the analysis was continued using XRD method and found that fly ash BTG I was dominated with Davyne mineral phasa with hexagonal crystal structure. Bottom ash showed bavenite phasa with orthorhombic crystal structure. Meanwhile, at BTG 2, fly ash showed Quartz phasa with trigonal crystal structure (hexagonal axes) and for bottom ash, there was Berlinite phasa with trigonal crystal structure (hexagonal axes) and Gillespite phasa with yang orthorhombic crystal structure. Key Word: PLTU, Fly Ash, Bottom Ash, LOI, XRF, XRD