63 research outputs found
TINGKAT PERKEMBANGAN TANAH DI BANJAR TOPOGRAFI SEPANJANG SUNGAI BATU-BATU KABUPATEN SOPPENG, PROPINSI SULAWESI SELATAN
No full textThe study was carried out to investigate the role of soil mineralogy in determining soil development rate in a topographical range (Toposequence) along Batu-Batu River in Soppeng Regency of South Sulawesi Province. The sample profile was selected based on the difference in altitude of the site, its sloping nature, and rock unit. The soil profiles can be described as follows: P1 Soil level, 15%, sedimentary rock); P3 (20 meters above sea level, 3%, alluvium sediment), and P4 (5 meters above sea level, <3%, alluvium sediment). The differences in the sample profile based on topography and rock unit are usually called topolithosequence range. Mineralogy analysis consists of : sand fraction and clay minerals analyses. Sand fraction mineral used is 116 meshes or 0.124 mm, identified by means of binocular microscope following line counting method. Meanwhile, the clay mineral is transformed into powder which is later analysed with X-ray diffraction under treatments of oriented sample, Mg++saturation, Mg++ saturation with Glycerol, and K+ with 550oC heating. In the identification of sand fraction mineral for each profile, minerals such as Garnet, Apatite, Olivine, Hornblende, Biotite, Feldspar, Muscovite, Quartz, Hematite, and Pyrite are found. In general, the minerals like feldspar, apatite, garnet, and quartz are the most dominant ones. The availability of quartz mineral is smaller than those of feldspar, apatite, and garnet, but compared to olivine, pyrite, hematite, hornblende, biotite, and muscovite it is much bigger. Therefore, in general it can be concluded that the soil profile has not further developed. If the quartz mineral is to be used as a benchmark for the rate of the soil development from its vulnerability against decomposition, the development rate of the soil among the profiles can be arranged as follow: P4>P3>P2>P1. The X-ray diffractogram analysis of every soil profile indicates that the diffractogram peaks: 3.2; 3.4; 3.56; 9.9; 12.4; 14.5; 15.4; 16.8; and 17.7 Ao are identified as montmorilonite clay mineral, and the diffractogram peaks 7.2 and 10.1 Ao are haloisite. Meanwhile, the diffrctogram peaks 3.58, 3.59, and 7.15 Ao are identified as kaolinite. Each soil profile with its diffractogram peak signifies that all profiles have clay mineral montmorilonite, haloisite, and kaolite, except soil profile P1 only bears montmorilonite, and haloisite. Therefore, it could be said that P1 has been through longer decomposition process than P2, P3, and P4 have, although it never leads to a soil development rate. The overall results of both sand fraction minerals and clay minerals signify that the soil development rate of each profile slopes down. This eventually indicates that the decomposition process is transported in its nature (lateral translocation)
Identifikasi Lahan Pertanian Pangan Berkelanjutan di Kabupaten Gowa, Sulawesi Selatan: Zonasi Lingkup Kawasan Mamminasata Menggunakan Pendekatan MCDM
No full textThe protection of agricultural land is very important to be studied scientifically considering the rapid growth of the population so that the possibility of land use conflict is very high. The main purpose of this research is to identify and inventory agricultural land of food especially existing rice-paddy fields to find zonasi agricultural land for sustainable foodcrops (ALSF) and agricultural reserved land for sustainable foodcrops (ARLSF)) with the level of threat from the transfer function in Gowa Regency area of hinterland Mamminasata, South Sulawesi. This study used a multiple criteria decision making approach with purpose mapping function of ALSF and ARLSF. The generic attributes, from: the biophysical aspects of the land (altitude, sizes of soil cracking, length of rice-field in slope landscape unit, proportion of paddy field area, top soil thickness), and socio-economic aspects (population density, population growth rate, demand for paddy field, productivity of paddy fields, equilibrium of paddy field), and policy aspects (local regulations status, detailed spatial plan status, type of irrigation networks). While the scenario of zonation of ALSF and ARLSF is used the criteria of distance from the provincial capital (Makassar) and the district capital (Sombaopu), the status of the rice-paddy field equilibrium and the trend pattern of percentage of space requirement. The results of the research shows that the existing position of paddy field is identified as ALSF and ARLSF zonation currently 24,210 Ha. The level of vulnerability of land conversion, which is in a "safe" position of 15,407 Ha (63.64%), and "threatened" of 8,803 Ha (36.36%). The prediction of productivity potential is related to the area of land that can be managed optimally in the vulnerable time up to the year 2020 covering 19,499 Ha (80.54%), and subsequently, by 2040 the area will shrink to only 10,173 Ha (42.02%)
KARAKTERISTIK METALURGI PADA ZAMAN ZULKARNAIN DALAM KAJIAN SAINS: BESI DAN TEMBAGA
No full textZulkarnain's story is found along the line of Al-Kahfi's letters. One of the most popular was when Zulkarnain was asked by the creatures living between the two mountains to stop the exit of yakjuj and makjuj the destroyer. Zulkarnain was asked to make fortifications or high walls as a barrier to the destroyer. By Iskandar Zulkarnain made a fort with pieces of hot iron doused with melted copper. The characteristics of the mixture of steel and copper when combined will produce a sturdy and strong steel iron. Some elements are combined with steel in order to improve the tensile ability of steel iron. In some studies, it is combining steel with copper. Copper alloy steel is expected to increase the attractiveness of the steel iron. This will be seen by obtaining existing data on the mixture between steel and copper. The purpose of this study is to find out the relationship between science and Zulkarnain's story and to know how the characteristics of the mixture of iron with copper in the manufacture of barrier walls. In the manufacture of barrier fortifications using casting techniques. For data collection through the study of literature. In collecting data, the author collects data and information related to the Quranic interpretation of iron and copper, characteristics of steel, characteristics of copper, foundry techniques, and quranic interpretation of the story of Zulkarnain through supporting data sourced from research journals. . The method used uses a qualitative method that contains descriptive explanations with existing data. The results of the research obtained that from several studies it is known that the alloy between copper metal and steel iron produces a strong steel attraction and has a high ultimate stress compare.d to without an alloy. The alloy also prevents from the effects of corrosion on iro
Analisis Skalogram: Studi Kasus Pengembangan Kopi Mamasa Berbasis Kesesuaian Lahan dan Sarana Fasilitas Penunjang di Kabupaten Mamasa : Scalogram Analysis: Case Study of Mamasa Coffee Development Based on Land Suitability and Supporting Facilities in Mamasa Regency
No full textTo optimize Mamasa coffee production, a land use model that is appropriate to its designation is needed. The actual coffee area in Mamasa Regency reached 33,589.79 ha with a total of 20,980 farmer heads of households. This means that a large number of Mamasa people depend on Mamasa coffee. Analyze the land suitability of Mamasa coffee in relation to the regional hierarchy based on the availability of coffee supporting facilities in Mamasa Regency. Data analysis used the land suitability analysis method combined with a scalogram, to see contextually the process of intensification and development of Mamasa coffee supporting facilities. The results of this study indicate that most of the land for the business of managing Arabica and Robusta coffee plants is dominantly constrained by the physical conditions of the area where around 84.5% of the land is not suitable (N) with dominant slopes with erosion hazards (eh), root media (rc) and water availability (wa) in several open locations. In addition, the availability of coffee supporting facilities in Mamasa Regency is dominant in hierarchy 3 of 88%, while hierarchy 2 is only 9% and hierarchy 1 is 3%. This means that the facilities in Mamasa Regency in order to support coffee development related to processing facilities to marketing are still minimal. The Government of Mamasa Regency needs to pay attention to the improvement of coffee supporting facilities, especially in areas that are suitable land for Mamasa coffee, so that the intensification of coffee production in the upstream can be optimized and increased marketing in the downstream
Deep Brain Stimulation (DBS) and Implant-friendly (IF) Mode Calculator
No full textRepository includes MATLAB codes. Raw input and and output files may be requested by emailing the author. The code that supports the findings of this study is openly available at https://github.com/AliSaMRI/DBS_IF_Mode_CalculatorThe purpose of this study is to present a strategy to calculate the implant-friendly (IF) excitation modes—which mitigate the radiofrequency (RF) heating at the contacts of deep brain stimulation (DBS) electrodes—of multi-channel RF coils at 7T.
Methods:
An induced RF current on an implantable electrode generates a scattered magnetic field whose left-handed circularly polarizing component (B1+) is approximated using a -mapping technique and subsequently utilized as a gauge for the electrode’s induced current. Using this approach, the relative induced currents due to each channel of a multi-channel RF coil on the DBS electrode were calculated. The IF modes of the corresponding multi-channel coil were determined by calculating the null space of the relative induced currents. The proposed strategy was tested and validated for unilateral and bilateral commercial DBS electrodes (directional lead, Infinity DBS system, Abbott Laboratories) placed inside a uniform phantom by performing heating and imaging studies on a 7T MRI scanner using a 16-channel transceive RF coil.
Results:
Individual IF modes nor shim solutions obtained from IF modes did not induce significant temperature increase when used for a high-power Turbo Spin Echo sequence. In contrast, shimming with the scanner’s toolbox (i.e., based on per-channel B1+ fields) resulted in a more than 2°C temperature increase for the same amount of input power.
Conclusion:
A strategy for calculating the IF modes of a multi-channel RF coil is presented. This strategy was validated using a 16-channel RF coil at 7T for unilateral and bilateral commercial DBS electrodes inside a uniform phantom.Sadeghi-Tarakameh, Alireza; DelaBarre, Lance; Zulkarnain, Nur Izzati Huda; Harel, Noam; Eryaman, Yigitcan. (2023). Deep Brain Stimulation (DBS) and Implant-friendly (IF) Mode Calculator. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/h56h-bd77
Mapping the Land Suitability Rating of Arabica Coffee Crops: A Geographical Indication Factor-Based Approach
No full textAims: To map land suitability ratings and organoleptic characteristics of arabica coffee using physical and human dimension attributes constructed from geographical indication components.
Study Design: The study was designed in an integrated manner, using a quantitative approach integrated with a qualitative-descriptive approach and supported by field surveys.
Place and Duration of Study: Conducted in 3 sub-districts within the scope of Sinjai Regency, South Sulawesi Province, Indonesia, at altitudes > 800 m.asl., between February 2021 and August 2022.
Methodology: The method for determining the observation location point is on-screen digitization based on the land cover class seen with satellite imagery. Ground truth implementation, 16 location points were determined with their respective geographical coordinate positions. To analyze soil properties and characteristics, 41 samples were obtained: An organoleptic test of coffee beans, as many as 3 samples representing the sub-district area.
Results: Mapping using physical dimensions in the West Sinjai area resulted in a moderate land suitability rating with an area of 6,976.46 ha; the Sinjai Borong area obtained a less suitable rating of 7,530.32 ha and a moderate rating of 1,457.17 ha, the Central Sinjai area obtained a less suitable rating of 822.16 ha, and a moderate rating of 1,586.47 ha. The compilation of physical and human dimensions in the West Sinjai area shows a moderate rating of 1,057.97 ha and a suitable rating of 5,918.49 ha, Sinjai Borong produces a moderate rating of 8,821.48 ha and a suitable rating of 166.01 ha, Central Sinjai obtained land suitability with a moderate rating of 986.55 ha and a suitable rating of 1,422.08 ha. West Sinjai and Central Sinjai have an organoleptic score of 88.50, with a more specific floral aroma than Sinjai Borong.
Conclusion: Mapping the land suitability ranking of arabica coffee plants using physical and human dimensions provides clear and logical results
Maintenance management on public facilities by local authorities / Eddie Zulkarnain Said
No full textAs we know, many people lived in cities. On behalf of that, cities should have a complete facilities accommodation within it. Among them are the recreation parks that have many uses for outdoor activities. Recreation parks can gives human satisfaction, which they can have fresh air while doing many beneficial activities with family and friends. These outdoor activities also increase the social among human. Many recreation parks nowadays have been built to fulfill the demand of the people. With the presence of other utility equipped at the park it can increase the economy of the country because of the tourist; local or international visit many recreational parks in this country. There are many recreation parks based or back to the basic which involves the nature source for instance trees,-lake, flowers and other nature sources. And so of that, development has taken place at the said areas which it needs to be maintained for public uses day by day. In short, this dissertation will study on the Maintenance Management on public facilities by Local Authorities and it is hoped that author can come out with rationale solution and recommendation regarding the study area
Dinamika Pola Perubahan Penggunaan Lahan Kabupaten Gowa Berdasarkan Jarak dari Kota Makassar: Dynamics of Land Change Patterns in Gowa Regency based on Distance from Makassar City
No full textPertumbuhan penduduk merupakan salah satu faktor yang dapat mempengaruhi dinamika penggunaan lahan melalui hubungan yang kompleks antara kebutuhan manusia untuk memenuhi kebutuhan sebagai tempat tinggal dan kebutuhan produksi pertanian. Kabupaten Gowa mengalami perubahan lahan sangat signifikan dari tahun ke tahun disebabkan karena pertumbahan penduduk Kota Makassar dan Kabupaten Gowa sendiri. Perubahan penggunaan lahan menyebabkan konversi lahan dan tekanan pada sumber daya lahan. Penelitian ini bertujuan untuk mengetahui dinamika pola perubahan penggunaan lahan produktif terhadap perkembangan kawasan urbanisasi dari Kota Makassar ke arah transek jarak wilayah Kabupaten Gowa. Penelitian ini dilaksanakan di Kota Makassar dan Kabupaten Gowa yang mencakup wilayah Kecamatan Manggala, Pattalasang, Parangloe hingga Tinggimoncong. Perubahan penggunaan lahan dilihat dengan menggunakan metode klasifikasi terbimbing berdasarkan data citra satelit pada tahun 2000, 2010 dan 2020. Hasil penelitian menunjukkan bahwa terjadi perubahan penggunaan lahan secara pesat pada tahun 2000, 2010 dan 2020 di wilayah Kota Makassar dan Kabupaten Gowa. Dinamika pola perubahan penggunaan lahan terhadap perkembangan kawasan urbanisasi Kota Makassar ke arah wilayah Kabupaten Gowa berdasarkan transek jarak pada setiap penggunaan lahan sawah, kebun campur, pemukiman, lahan kering, lahan badan air terus meningkat,sehingga menyebabkan penurunan jumlah hutan yang semakin menurun
POTENSI KONFLIK PENGGUNAAN LAHAN PERSAWAHAN DI KABUPATEN GOWA PADA KAWASAN STRATEGIS NASIONAL MAMMINASATA: Potential Conflicts of The Rice Field Land-Use in Gowa District on Mamminasata National Strategic Area
No full textThe rate of the population growth was accompanied with the increased number of economic growth year by year in Gowa District on the KSN Mamminasata trigger the competition of using the potential land leading to the land-use conflicts. This research aims to assess the rice field land-use potential conflicts. The map of land-use, the map of spatial pattern of RTRW in Gowa District, and the agricultural land for sustainable food crops zonation map was interpreted and collated to get a general overview of potential land-use conflicts that may occur and determine potential conflicts of government regulation sector. Then interviews were conducted with farmers using a purposive sampling questionnaire method to determine their land use preferences for the land they currently manage. It is then tabulated in the form of a typology to describe the distribution of potential land use conflicts. The results showed that the existing irrigated rice fields in Gowa District spread over nine sub-districts which all are included in the KSN Mamminasata with the total area at 19,053.27 ha and the rest of 4,229.65 ha were not included in the plan of the wetland agricultural areas, yet those belong to in residential and educational areas. In addition, there was land at 2,493.26 ha included in the zonation ALSF and ARLSF. There were 17 villages which had the higher number of rice field preferences than the residential preferences. The differences from these land-use preferences can trigger into the land-use conflicts between the parties occurred
Pembentukan tanah di sekitar danau Tempe yang dipengaruhi oleh DAS Bila-Walanae Sulawesi Selatan
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