IDENTIFIKASI KEBERADAAN BASEMENT DI BAWAH CEKUNGAN TIMOR BERDASARKAN DATA ANOMALI GRAVITASI DENGAN PEMODELAN TIGA DIMENSI | Author : Aryanti Irnawati Pellokila, Jehunias L. Tanesib, Bernandus Bernandus | Abstract | Full Text | Abstract :Gravity method is a method used to find the difference of gravity value from one point to another in a place caused by mass distribution which is below the surface of research area. Basement identification of complete Bouguer anomaly data has been done in the Timor Basin with geographical position 9.40 LS – 10.40 LS dan 123.50 BT – 125.40 BT. The identification of the basement under the Timor Basin is based on gravity field anomaly data. The gravity field anomaly data used in the research is the result of measurement of Geodetic Satellite and European Remote Sensing Satellite which has been corrected to free air correction. Based on the inversion, the overall average density from the first layer to the tenth layer 2.662 . Timor Basin which is a place of accumulation of sediment and has a basement which is a type of metamorphic rocks from within 3.86 km to 20 km strong and is not pass the water hence this basin has the potential of a trap of natural energy sources in the form of oil and gas.
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| PEMETAAN DAERAH RAWAN BANJIR DENGAN PENGINDERAAN JAUH DAN SISTEM INFORMASI GEOGRAFIS DI KECAMATAN KUPANG TIMUR KABUPATEN KUPANG PROVINSI NUSA TENGGARA TIMUR | Author : Nuryanti Nuryanti, Jehunias L. Tanesib, Ali Warsito | Abstract | Full Text | Abstract :has been done. The research method such as making a rainfall map, a land cover Map, and making a slope class Map. The results of research showed that flood vulnerability level in east Kupang district became three vulnerability classes: Class with an area not prone to flooding 8284.32 Ha (50.70 %), class with an area rather prone to flooding 3368.61 Ha (20.62 %) and class with an area very prone to flooding 72.912,96 Ha (28.68 %) |
| ANALISIS AKTIVITAS JENIS RADIOISOTOP DALAM SAMPEL AIR SUMUR DI DESA SUAI KECAMATAN MALAKA TENGAH KABUPATEN MALAKA | Author : Veronika Hoar Seran, Albert Zicko Johannes, Bartholomeus Pasangka | Abstract | Full Text | Abstract :The interval value of radioisotope mass specific activity in well water at Suai village the Middle Malaka Subdistric,Malaka Regency, was 17,360 x to 0,1042.Based on the counts per minute calculation of laboratory samples,the results obtained exceeds water threshold requirementallowed (permenkes no:492/menkes/per/IV/19April 2010), that is: ß= 2,7 xµCi/gram and a = 0,27 xµCi/gram which from Beta and Alpha radiation.The results show a high alphacontaminationand medium Beta contamination at sample point 15.2,with value 17,360 am , the medium alpha contamination and low Beta contamination at samples point 1.2,2-14,15.1,17-19,20.2 with value 1,31s/d 8,82 and also the low alpha contaminationand lowbeta contamination at samples point 1.1, 16, 20.1 with value 0,14to 9,96 for the research location.
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| ANALISIS KEJADIAN BADAI MAGNETIK BERDASARKAN DATA VARIASI HARIAN MAGNETIK DI KOTA KUPANG | Author : Gertrudis V. Kahar, Abdul Wahid, Hadi Imam Sutaji | Abstract | Full Text | Abstract :The research about analysis of magnetic storm events in Kupang City from October 2014 to September 2016 has been done. The purpose of this study is to determine the characteristic of storm events and the period of emergence magnetic storm from Kupang City. The data used is the daily magnetic variation data obtained from Meteorogical Climatological and Geophysical Agency in Kupang City. The data processing using by Microsoft Excel software to create graph data of the earth magnetic components against time and Matlab 2011 sofware to determining the periodicity of magnetic storm events using Fast Fourier Transform (FFT). From the results of data processing, the characteristic of magnetic storm events in the study area from October 2014 to September 2016 were for the maximum magnetic interference activity level occurring on june 22th, 2015 due to burst of CME marked by the value of K index = 8, A index = 54.875 and degradation value of DST = -121 nT, so category middle storm and minimum magnetic interference activity level occurred on February 10th, 2015 due to burst of CME and flare marked with value K index = 3, A index =11.5, and decreasing value of DST =-17 nT, thus categorized relatively quietly. The period of occurrence magnetic activity from October 2014 to September 2016 is within a period of one daily to ten daily.
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| ANALISIS PERBANDINGAN KEMUNCULAN SINTILASI IONOSFER DI KUPANG DAN DARWIN | Author : Roci N. Piubati, Ali Warsito, Asnwi Husin | Abstract | Full Text | Abstract :Comparrative analysis of ionospheric synthesis in Kupang and Darwin has been done. This study aims to find out the comparison of ionospheric synthesis between Kupang and Darwin and mechanism of emergence of Kupang and Darwin ionosphere synthesis with variation of S4 index = 0,4, = 0,5 and = 0,6. The method used is to process the synthesis data with MATLAB software to get daily variation graph, and continued with workmanship using microsoft excell to get monthly and annual variation graph and comparison graph of ionospheric in Kupang and Darwin. The results show that the comparison of ionospheric synthesis between Kupang and Darwin in 2013 has a strong correlation with S4 index = 0,4 occurs in September and October with correlation coeffisient = 0,6 and in May and Juli have a weak correlation with correlation coeffisient = 0,5 while in Juni, August and November did not correlate.
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| PENGARUH KOMPOSISI SEKAM PADI TERHADAP PARAMETER FISIS BRIKET TEMPURUNG KELAPA | Author : Maria Lurumutin Umrisu, Redi K. Pingak, Albert Zicko Johannes | Abstract | Full Text | Abstract :Bio-briquette is one of the fuels that comes from biomass. The biomass used in this research is coconut shell and rice husk. The aims of this research are to know the influence of variation of rice husk composition and thickness variation on physical parameters of shell briquettes. The results of this study indicate that the density, moisture value, porosity and ash values, respectively ranged between (0.69 - 1.12 ), (3,33% - 7,57%.), (16,66% - 31,88%.), (38,46% - 66,66%.). The analysis showed that in general, the composittion of rice husk is inversely proportional to density, moisture value and briquette ash value, otherwise the composition of rice husk is directly proportional briquette porosity value. Based on density value, mositure value and ash value it can be concluded that in this research the quality of briquettes with composition 40% coconut shell and 60% rice husk is better than the other compositions.
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| PENENTUAN MORFOLOGI PERMUKAAN, SIFAT FISIS DAN MEKANIK BERDASARKAN PRESENTASE KOMPOSISI BAHAN CAMPURAN BATAKO | Author : Selfiana Missa, Minsyahril Bukit, Andreas Christian Louk | Abstract | Full Text | Abstract :A research of determination of surface morphology, physical properties and mechanical properties of brick based on the composition of the mixture has been done. This research was done by using material of white soil and sand. Then Materials are mixted with cement with materials variation 1:5, 1:6, 1:7, 1:8 dan 1:9. Than each one was molded by means of compaction and drying. After drying process the physical and mechanical properties of the test specimen is done in the form of compression test, density, porosity, and SEM characterization. Based on data analysis, brick with mixed variation of white soil of 665 mesh has the density value of 2,05 gr/cm3, 2,04 gr/cm3 dan 1,99 gr/cm3. For brick with mixed variation of white soilof 114 mesh has the density value are 2,16 gr/cm3, 2,14 gr/cm3dan 2,05 gr/cm3. For brick with mixed variation of sand of 665 mesh has the density value are 2,04 gr/cm3, 1,89 gr/cm3 dan 2,11 gr/cm3. For brick with mixed variation of sand of 114 mesh has the density value are 2,05 gr/cm3, 2,11 gr/cm3dan 2,02 gr/cm3. Compressive strength of brick with mixed variation of white soil of 114 mesh is 20 kg/cm² meet the minimum compressive strength standard of quality IV. While for the porosity of brick with mixed variation of 1:6 and 1:8 meet the standards of water absorption standard of quality I and quality II.
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| SISTEM PNEGUKURAN INDEKS MASSA TUBUH MENGGUNAKAN SENSOR JARAK INFRA MERAH DAN LOAD CELL | Author : Vonnete Mieva Mayer Lusi, Ali Warsito, Andreas Christian Louk | Abstract | Full Text | Abstract :A human body mass index measurement system has been developed by using IR sharp distance infrared cencorG P2Y0A02YK0F,200 kg Load Cell, Arduino Uno,Raspberry PI 3,HX711, HDMI display and the other electronic components. In this research Arduino Uno has a purpose as the instruction center with AT Mega 328 microcontroller is used to prosess high measurement data and body mass obtained from cencor Sharp IR GP2Y0A02YK0F dan Load Cell. This measurement system is controlled by the Arduino programming language. After Arduino Uno get a high data and body mass, the data is sent to raspberry pi 3 to calculate body mass index value ( BMI ) and the body category determination using lazarus programming language. If the BMI value < 17,0 classified as “very thin” body category, the BMI value between 17,0 – 18,4 has the category of “ thin body “, the value of intermediate BMI 18,5 – 25,0 has the “ normal body “ category, BMI value between 25,1 – 27,0 has a “ fat body “ category, and a BMI value >27,0 has a “ very fat body “ category. Raspberry pi 3 is also aquipped with HDMI support, hence all high data mass, BMI and body category will be displayed on HDMI monitor as its output.
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| PEMETAAN NILAI PERCEPATAN TANAH MAKSIMUM DENGAN METODE DETERMINISTIC SEISMIC HAZARD ANALYSIS DI LOKASI PEMBANGUNAN OBSERVATORIUM NASIONAL DESA BITOBE KECAMATAN AMFOANG TENGAH KABUPATEN KUPANG | Author : Awanda Magdalena Bessi, Hery L. Sianturi, Bernandus Bernandus | Abstract | Full Text | Abstract :The research using HVSR (Horizontal to Vertical Spectral Ratio) has been carried out to map the disturb areas to earthquakes in Bitobe village. The aims of this research are to determine the values of soil dominant frequency and the peak ground acceleration than make PGA map and also microzonation map. Data were collected at 45 points with the distance between points ± 250 meters from one point to the other with ± 20 minutes of recording time used TDS 303S type. The data were processed using software Datapro, Geopsy, Surfer 13, and Google Earth. The result of data processing was dominant frequency value (). This parameter was used to calculate the peak ground acceleration with Kanai empirical equations. The earthquakes catalog data were used from 1966-2016. Mc.Guirre and Esteva method only used the earthquakes catalog data to calculated the PGA. According to this research, it was obtained that the values of the dominant frequency was about 0,273 Hz – 17,887 Hz. The values of peak ground acceleration based on Kanai empirical equations about 32,319 gal – 261,178 gal, Mc.Guirre about 128,215 gal – 134,862 gal and Esteva about 147,359 gal – 156,007 gal. The result of this third equations have different with the earthquakes hazard map of Indonesia.
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| INTERPRETASI BAWAH PERMUKAAN GUNUNG ANAK RANAKAH DENGAN PEMODELAN DUA DIMENSI (2D) BERDASARKAN DATA ANOMALI GRAVITASI LOKAL | Author : Godensius Tematur, Jehunias L. Tanesib, Redi K. Pingak | Abstract | Full Text | Abstract :Geophysical research by using the gravity method has been carried out on the Ranakah child mountain and surrounding areas in Manggarai Regency of East Nusa Tenggara in June until July 2016. This research aims to know the condition of the subsurface geology of the area of research using the free air anomaly data from Sandwell and Smith 2016. The data are reduced by atmospheric correction, Simple Bouguer correction, and the correction of curvature to obtain complete Bouguer anomalies. Bouguer anomaly data brought down the field topography with continuation method down as deep as 300 m using the Magpic. Then, 2 dimensional modeling is done using the Grav2DC. The results obtained show that the geological conditions under the surface of the Ranakah Child mountaoin and its surrounding area was dominated by basalt rocks (density of ), andesite (density of ), and soil rocks (density of ).
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| PENENTUAN SIFAT MEKANIS DAN FISIS BATU BATA DENGAN PENAMBAHAN ARANG TEMPURUNG KELAPA ASAL ALOR | Author : Ernawati Kawa, Minsyahril Bukit, Albert Zicko Johannes | Abstract | Full Text | Abstract :A research had been conducted to determine physical and mechanical properties of the bricks with the addition coconut shell charcoal from alor. This research aims at the quality of the bricks to meet the standars of eligibility as a contruction material. The addition of coconut shell charcoal is variate with the presentage 0%, 5%, 10%, 15% to the clay mass. The brick being printed with procedure compaction, drying, and baking. After the printing procedure is done then next is testing the mechanical and physical properties, that is compression strength test, density test, and porosity test. The brick quality result is obtained based on the test: a) compression strength test, the brick without addition (0%) : 4,94 (SNI 15-2094-2000) is comply with the standard compression strength the class 50 , b) porosity test, the brick 0% and 5% (3,82% and 17,93%) meet the standard with the maximum limit 20% ( SNI 15-2094-2000) , and c) density test, every bricks does not meet the standard (SII 0021- 1978).
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| PEMANFAATAN RADIASI MULTIGAMMA NUKLIR DALAM MENGEMBANGKAN KACANG ARBILA (Paceolus lunatus) TIPE MENJALAR ASAL CAMPLONG KECAMATAN FATULEU KABUPATEN KUPANG | Author : Venchy S. Banafanu, Abdul Wahid, Bartholomeus Pasangka | Abstract | Full Text | Abstract :protein content is 33‚ Arbilabean (phaseolus lunatus) is one of East Nusa Tenggara (NTT) original leguminosa‚ specially in Fatuleu subdistrick which has important owning role to fulfill human need‚ which has high-grade of owning content of nutriant and also supporting human income. Productivity level of Arbilabean was influenced by many factors‚ for exampls : the usage of pre-eminent varieties‚ fertilities of land and also conservancy tecnique. Those factors were push forward optimal growth of Arbilabean ‚ so that it was obtained maximal crops. The aim of research is to know the best dose of multigamma radiation tecnique wich consists of 5 elemens : Cd-109‚ Co-60‚ Cs-137‚ Mn-54‚ and Sn-113 for development local Arbilabean on creep type in Camplong area and to know pre-aminent physical characteristic by multigamma radition. The method used in this research was multigamma radiation‚ coverred 8 treatments i-e : without rads‚ 1000 rads‚ 1500 rads‚ 2000 rads‚ 2500 rads‚ 3000 rads‚ 3500 rads‚and 4000 rads. The result of this research was indicated that using the best dose of radiation for the crops of local Abilabean is 4000 rads. Physical characteristic pre-eminent wich obtained cover to grow quckly was high 2‚65 cm‚ crops age is briefer 73 day after cultivation (dac)‚high of total production is 39‚7gram and 43%.
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| PENENTUAN CELAH ENERGI OPTIK EKSTRAK DAUN ALPUKAT (PERSEA AMERICANA MILL) ASAL DESA OINLASI MENGGUNAKAN METODE TAUC PLOT | Author : Magdalena M. Y. Missa, Redi K. Pingak, Hadi Imam Sutaji | Abstract | Full Text | Abstract :has been done. Determination of energy gap value was done for 3 possible transition types : direct transition, indirect transition, and direct forbidden transition. Based on calculations using Tauc plot method, energy gap average obtained for each transition are 1,834 eV, 1,829 eV, and 1,835 eV, respectively. Based on this energy gap value, the compound of avocado leaves extract can be categorized as a semiconducting material. Therefore, it can be concluded that avocado leaves extract has the potential to be used as alternative materials in electronic devices. |
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