A research had been done in Lembata Island by using gravity method. The aims of this research are to know the underground surface structure of Lembata Island and also to compare the previous research that used 2D. The data used in this research are free air gravity anomaly data by Sandwell and Smith on 2015. The data are reduced with atmosphere correction, simple bouger correction and curvature correction to get the result of complete bouger anomaly. Complete bouger anomaly is the combination of residual anomaly and regional anomaly so that the separation to the both anomalies is done with the up continuous method at the height of 3 Km. The result of up continuous process is used to the modelling by using Grablox and Bloxer programs. The next is doing the interpretation of the modelling result. The result of gravity field anomaly interpretation shows that Lembata Island has positive anomaly with the result over 0 mgl until 190 mgal. While the result of three dimensions shows that Lembata area has eight rocks type namely sandstone, limestone, dolomite, granite, andesite, diorite, basalt and gabbros. Lembata area also has Caesar at the depth of 4 Km and the depths of 6 Km. The basement rocks of this area is basalt. The comparison result of two dimensions and three dimensions is on the two dimensions only has andesite, granite, diorite and basalt rock.

A fire alarm system has been design by using infra red sensor module which is sensitive to fire, temperature sensor of LM35DZ and controlled by Arduino Uno microcontroller which have ATMega328 as central processing unit. System ouput information using a 16x2 character LCD, LED lamp, and Buzzer. The system will compare both output of the infra red sensor and temperature sensor to decide whether a fire was made and trigger the alarm. Some set value of the sensors defined as a limit to make the decision. If fire exists, then buzzer will ring and the LCD will display “Ada Api”. If the temperature detected by the LM35DZ equal or below 29oC then green LED will lit on and LCD will display temperature information of “Aman”. If the temperature is between 29 oC to 37 oC then yellow LED will lit on and the LCD will display “Normal”. If the temperature is above 37 oC then red LED will lit on, buzzwr will ring and LCD will display “Waspada Kebakaran”. If no fire detected, then LCD will display “Tidak ada Api”.

Underground investigations to identify the rock types have been done using resistivity method in Desa Tanjung, Saronggi. This was a preliminary study that can be used as a reference in planning the construction of building foundations. The identification was expected to reduce the failures in constructing building foundations in this area. To identify the underground rocks in the area, the measurements were done in open area at CV 1 area () using Wenner-Schlumberger method. Data analysis was done using Res2Dinv. Results were 2D profiles consisting of length, depth and resistivity value of each line. Interpretations to contours obtained for each profile showed that there was hard soil with no clays within interval 70 Om – 100 Om, defined to be a gravelly sandy layer that has no clay and a coarse sandy gravelly layer (> 100 Om). Building foundations can be built in profile 1 using shallow building foundation construction at interval 15 m – 92 m and 118 m – 135 m, with depth being 2.5 m -15.5m. Such constructions can also be built in profile 2 and 3. In profile 2, the interval at which the constructions were possible lying between 25 m – 50 m, 108 m – 151 m and 159 m – 176 m, with their depths being 2.5 m – 20 m, 2.5 m – 12.8 m and 2.5 m – 8 m respectively. In profile 3, the construction can be built with depth interval 2.5 m – 15 m along length interval of 15 m – 135 m.

Ostrovsky equation is a nonlinear partial diferential equation which we found in many problems of physics such as tsunami. This equation has many special analytical solutions especially for describing the travelling of soliton. One of the famous special solution is containing quadratic tanh term or we can express it in sech term. In this paper, the meromorphic solutions of Ostrovsky equation have analyzed by using Demina-Kudryashov algorithm. Firstly, this equation was transformed to nonlinear ordinary differential equation by using travelling wave model and then by using this algorithm and based on Laurent series, the meromorphic solutions can be contructed. Finally, the general solutions was found. These solutions take form in three types, such as simply periodic, doubly periodic (elliptic solutions), and rational solution. And then, the special solution of this equation was showed by choosing a special condition.

Harmonic contamination of synchrotron radiation needs to be detected and corrected because x-ray passing through the monochromator may still have higher order harmonics in addition to its fundamental energy. Here, detection of the harmonic effect on X-ray Absorption Fine Structure Data (XAFS) of Ni(II)-bis-(n-isopropylsalicylaldiminato) was done using the X-ray Extended Range Technique (XERT). The method utilised aluminum foils with various thicknesses mounted in daisy wheels, used to investigate the gradient differences in absorption coefficient vs aluminum thickness plots. The Beer-Lambert equation had to be modified dan fitted to find the harmonic fractions of the beam. These values were then interpolated to account for other energies where the effect was dominant. The results showed that the effect was dominant between 8.5 keV and 13.5 keV, with harmonic fractions being about 0.02 % - 0.04 %. In contrast, there was no such effect found between 13.50 keV and 19.00 keV. To conclude, harmonic contamination was found to be in energy range that was vital for XAFS analysis for Ni(II) complex and thus had to be removed from the measured data.

Baby incubator is very important to keep the newborns body temperature especially for prematuture babies. The incubator is designed to have a lenght of 60 cm, a width of 40 cm, and a height of 30 cm. System of baby incubatir will automatically turn on or turn off the fan and or heating in accordance with the normal range of temperature and humidity in the incubator. The normal limits of temperature used is 33°C to 35°C. While the normal limits of air humidity in the incubator used is 40% sampai 60%. Data acquisition system consists of temperature and humidity sensor, microcontroller ATmega8535, fan, heater, and LCD. LCD is used to display the results of measurements of temperature and humidity.Heater is used to regulate the temperature inseide the incubator. While fan is used to regulate the humidity in the incubator. Test results show that the heater will turn on if the temperature is below the limits of 33°C. While the fan will turn on if the humidity is above 60%.

An opening system and roof cover for rice husk have been built. YL-83 rain sensor and LM35 temperature sensor are used as input variables to control the roof and heater. The main control on the system is Arduino Uno based on the ATmega328 Microcontroller. The roof is designed in two arms so that it can be folded. When the rain sensor detects rain, the roof will unfold the roof to cover and protect the grain. If the temperature measured by the LM35 temperature sensor is lower than 23 ° C, then the roof will close in the event the heater turns on. If the temperature is greater than 50 ° C, the roof will close without igniting the heater. The entire system has been tested and has been functioning with a very good response.

This study was conducted to design a forward and inverse modeling to obtain the response of gravity anomalies and subsurface model parameters based on some models of anomalous object such as semi-infinite horizontal sheet and vertical faulted sheet models using matlab software. The design of this models are expected to be applied to detect the presence of faults below the earths surface by gravity anomaly data in this case primary and secondary data. Gravity anomaly inversion performed using the non-linier inversion approach to solve the mathematical model of the subsurface anomalous object. In this research inversion models performed using unconstrain inversion and constrain inversion to look for some model parameters such as rock density, depth and thickness of anomalous object.

It has been done research about application of multigamma radiation techniques for breading of local union from Timor. The aims of research were to obtain fit variety of local union from Timor by using multigamma radiation, and to determine the exact radiation dose in the breading of local union from Timor. The method used of this research was multigamma radiation dose, which were consist of 6 treatments ie 1) no radiation, 2) 1000 rads, 3) 1500 rads, 4) 2000 rads, 5) 2500 rads, 6) 3000 rads. The result of this research showed that the best radiation dose for local union from Timor was 1500 rads. The superior physical characteristics obtained comprise of : the growth is faster , the age of plant is 16 weeks shorter after breading, diameter of clove is large than 1,06 cm, mass per 25 cloves is large than 30,8 grams.

An mapping of the potential Manganese mining zones has been done at Naip areas of the South Central Timor Regency using geomagnetic method. The purpose of this study was to determine the bedding structure and the subsurface patterns of rocks distribution that suspected contain manganese. The result of research were interpreted qualitatively and quantitatively. Qualitative interpretation shows that the low anomaly between -10 to <50 nT is mostly in the southern part and the high anomaly is = 50 to 220 nT, generally in the northern part of the study area. The low anomaly is interpreted as clay and high anomaly is interpreted as limestone associated with manganese and metamorphic rocks. For quantitative interpretation, the presence of manganese is suspected to be associated with limestone at a depth of 6.2-100 m in body 1A incision 1 (A-A1) with susceptibility value 0.008116, body 1B incision 2 (B-B1) which has susceptibility value 0.001967 and body 1C incision 3 (C-C1) for the susceptibility value of 0.006407. Body 1A incision 1 (A-A1) is spread from west to northeast direction, body 1B incision 2 (B-B1) starts south to north and body 1C incision 3 (C-C1) is southwest toward northeast.

Telah dilakukan penelitian tentang penentuan arah patahan yang terdapat dipulau Timordan sekitarnya menggunakan mekenisme sumber 3D gempabumi, dengan menggunakan data sekunder yakni data yang diambil katalog International Sesmology Center (ISC) dan U.S. Geological Survey/National Earthquake Information Center (USGS/NEIC) sejak tahun 1965-2013 pada koordinat 8,5° - 10,5°LS dan 123° - 126° BT. Analisis dilakukan dengan menggunakan Arcgis 9.3 untuk pembuatan peta coastline pulau Timor dan sekitarnya, software ZMAP 6.0 untuk pembuatan peta seimisistas berdasarkan kedalaman, sedangkan untuk penentuan arah patahan dan mekanisme sumber dari gempabumi yang terjadi digunakan software 3D Focal Mechanism. Hasil penelitian menunjukkan bahwa di pulau Timor dan sekitarnya yang dominan merupakan gempabumi dangkal (lebih kecil dari 70 km) yang terdapat di pulau Timor dan gempabumi sedang ( h diantara 70 hingga 300 km) yang cenderung ke arah baratdaya, sedangkan dari hasil mekanisme sumber menunjukkan gempabumi yang terjadi di pulau Timor dan sekitarnya didominasi oleh gempabumi akibat sesar turun berarah barat laut. Hal ini juga diungkapkan dari hasil mekanisme sumber 3 D dengan kedalamnya yang terlihat bahwa pola patahan yang terjadi diakibatkan oleh adanya penunjaman lempeng Indo-Australia di bawah lempeng Eurasia ke arah baratlaut pulau Timor.