7 research outputs found
Analisis Kekuatan Massa Batugamping Dengan Menggunakan Kaidah Hoek-Brown Failure Criterion-Roclab di Daerah Gunung Sudo Kabupaten Gunung Kidul Yogyakarta
Get PDFThe research area is a limestone quarry region prospect, located in Gunung Sudo, Gunung KidulRegency, Special Region of Yogyakarta Province. Safety factor of bench in limestone quarry isextremely determined by rock mass quality. The aim of this research is analyzing of rock massstrength of limestone in the quarry prospect using the Hoek-Brown failure criterion. The researchused quantitative method. To obtain rock mass strength analysis of limestone needs someparameters. The main parameters are uniaxial compressive strength of intact rock, GSI, lithology,disturbance factor, unit weight and application for slope (height). To solve this analysis is assisted byRoclab software. The Roclab is a software program for determining rock mass strength parametersbased on the generalized Hoek-Brown failure criterion. Final result of the research will be used forsafely mine design of the limestone quarry
Kontrol struktur geologi terhadap endapan tembaga sebagai arahan eksploitasi di daerah Ngerjo dan sekitarnya Kecamatan Tirtomoyo Kabupaten Wonogiri Propinsi Jawa Tengah
No full textESTIMASI GEOLOGICAL STRENGTH INDEX (GSI) SYSTEM PADA LAPISAN BATUGAMPING BERONGGA DI TAMBANG KUARI BLOK SAWIR TUBAN JAWA TIMUR
Get PDFThe limestone mine activity needs a good mine plan design with the result that saved for the environment. Mine design is determined by rock mass quality. The rock mass quality in each mine location is different and that is influenced by the geological conditions. Research area is located in limestone quarry Sawir Block of Kerek District, Tuban Regency, East Java Province. In limestone quarry area, there is cavity zone which consists cavity limestone layer at the wall of quarry bench. This cavity layer in limestone quarry has occurred by solution process. The cavity layer zone has more potential as weak zone which caused failure of bench in limestone quarry area. To analyze of the research of rock mass quality in cavity limestone layer using Geological Strength Index (GSI) system. Final result of the research is rock mass characterization specifically for cavity limestone layer
INFUSION MONITORING SYSTEM FOR PATIENTS BASED ON THE INTERNET OF THINGS (IOT) WITH ANDROID NOTIFICATION SYSTEM
Get PDFInfusion is one of the medical needs that are needed by many patients in various hospitals or health centers. Infusion is a way in which a patient can introduce fluids or drugs into the body quickly or slowly and continuously. Therefore, nurses always monitor the infusion manually and periodically to ensure the condition of the infusion fluid. The experimental method used in this study was by adding several features to make it easier for nurses to monitor patient infusions. The Infusion Monitoring System device used is based on the Internet of Things (IoT) with the Android Notification System. This research is expected to be able to monitor infusions more practically and can be monitored mobile using cellphones anywhere and anytime. To present this tool in this study, the author uses Nodemcu used to process data and also serves to connect to the internet. Then the sensors used are the Load cell sensor as a measuring tool for infusion volume and the Photodiode sensor as a detection tool for infusion fluid droplets. Then the calculation data from the sensor is sent to Firebase which acts as a database, and later it will be accessible and monitored via mobile phones through an android application created by the researcher. From the test results of the tools that the researcher made and the testing of comparison tools. The average of these tests gets an accuracy difference of approximately 2%. (Abstract
PENERAPAN SISTEM PENDUKUNG KEPUTUSAN MENGGUNAKAN SIMPLE MULTY ATTRIBUTE RATING TECHNIQUE METHOD (SMART METHOD) UNTUK PENGADAAN BUKU BARU DI SD N 1 CEPOKOJAJAR BERBASIS WEB
Get PDFThe library is a place to collect books or magazines. in education, the library is one effort to maintain and improve the effectiveness of teaching and learning in schools. Libraries are well organized and systematic, directly or indirectly, can provide services and convenience for teaching and learning. In order for the effectiveness of library maintenance can be improved, Then in this research the authors make a decision support system procurement new book by SMART method. With this decision support system is expected to help the school to be able to process data procurement new books better. The system created by the author has its own way to determine the book to be purchased at the procurement of new books where the school has planned it once a month. The procurement process of the book is determined based on several criteria that become the benchmark assessment such as the amount of book/categories, The amount of book borrowing / categories, book condition / categories and can be added other criteria needed. Data obtained from the library at SD 1 Cepokojajar, Total books owned until November 2016 is 8305 which consists of textbooks, story books and magazines. Library book lending statistics from year to year is always increasing. In 2014 there are 981 borrowings. In 2015, increased from 981 borrowing into 1004 borrowing books and recent data up to November 2016 was recorded in 1032 borrowing books. Based on the data obtained is used for the new book valuation material to be purchased by the school. As mentioned earlier for the calculation using the SMART method of determining the criteria of assessment which then given the value and weight to calculate the value of each book category. The end result of the system in the form of the value of the book which later made the decision to procure new books. xxiii After the test then the resulting accuracy of calculation of the system with the calculations performed by manual calculation can be said to be equal to the level of accuracy of 99%. Overall the system is built to provide an overview to the library SD 1 Cepokojajar for the procurement of new books. The data obtained from the library in SD 1 Cepokojajar total book owned until November 2016 is 8305 which consists of textbooks, book and magazine. Library library loan statistics from year to year always increase. In 2014 there are 981 borrowings. By 2015 the increase from 981 lending to 1004 book lending and the latest data until November 2016 recorded 1032 book lending. Based on the data obtained is used for the material penilian new book to be purchased by the school. As mentioned earlier for the calculation using the SMART method of determining the criteria of assessment which then given the value and weight to calculate the value of each book category. The end result of the system in the form of the value of the book which later made the decision to procure new books
Studi Eksperimen Pengaruh Variasi Inti Lilitan Pada Magnet Remanen Terhadap Unjuk Kerja Motor Diesel Satu Silinder 8 HP
No full text Abstract.
The development of automotive technology today has achieved very rapid progress. Various technological innovations continue to be made in order to keep up with increasing human mobility, including in the field of land transportation. This is because the use of fossil fuels is currently increasing, meanwhile, world oil reserves are increasingly limited, especially oil reserves in Indonesia, which are estimated to be available at 3.6 billion barrels. One of the alternative ways that can be used to reduce fuel consumption without compromising the performance of the engine is the process of "ionization of the magnetic field" in the fuel line in the hope that the electrons will no longer orbit the atomic nucleus and leave the molecule so that the atomic bonds in the molecule will be released and become charged. . This results in a combustion process that uses magnets in the flow of diesel fuel which can improve the performance of diesel engines and produce exhaust emissions that are environmentally friendly. The author intends to investigate the Effect of Core Winding Variations on Remanent Magnets on the Performance of Single Cylinder Diesel Motors based on these problems. The purpose of this research is to find out how the effect of the coil core on the remanent magnet on Torque, Power, and Specific Fuel Usage (Sfc). In this study the authors used experimental methods. The results showed that the use of remanent magnets in diesel engines by using windings on the fuel line can increase torque, power and specific fuel consumption (SFC). coils with iron pipes, namely the increase reached 4.09% for torque, 4.09% for power and for sfc decreased to 10.09% from standard conditions.
Abstrak
Perkembangan teknologi otomotif saat ini telah mencapai kemajuan yang sangat pesat. Berbagai inovasi teknologi terus dilakukan guna mengikuti mobilitas manusia yang semakin meningkat, termasuk dibidang tarnsportasi darat. Hal ini Pemakaian minyak yang bersumber dari fosil saat ini semakin lama semakin meningkat, sementara itu cadangan minyak dunia semakin terbatas terutama cadangan minyak di Indonesia yang diperkirakan ketersediaanya sebanyak 3,6 milyar barel. Salah satu cara alternatif yang dapat digunakan untuk menekan konsumsi bahan bakar tanpa mengesampingkan prestasi mesin tersebut dengan proses “ionisasi medan magnet” pada saluran bahan bakar dengan harapan elektron tidak lagi mengorbit pada inti atom dan meninggalkan molekul sehingga ikatan atom dalam molekul akan lepas dan menjadi bermuatan. Hal ini mengakibatkan proses pembakaran yang menggunakan magnet pada aliran bahan bakar diesel dapat meningkatkan performa motor diesel dan menghasilkan emisi gas buang yang ramah lingkungan. Penulis bermaksud menyelidiki Pengaruh Variasi Inti Lilitan Pada Magnet Remanen Terhadap Unjuk Kerja Motor Diesel Satu Silinder berdasarkan permasalahan tersebut. Tujuan dari penelitian ini adalah untuk mengetahui bagaimana pengaruh inti lilitan pada magnet remanen terhadapTorsi, Daya, dan Penggunaan bahan bakar spesifik (Sfc). Dalam penelitian ini penulis menggunakan metode experimental, Hasilnya menunjukkan Penggunaan magnet remanen pada motor diesel dengan menggunakan lilitan pada saluran bahan bakar dapat meningkatkan torsi, daya dan konsumsi bahan bakar spesifik (SFC), Data hasil penelitian menunjukkan bahwa lilitan dengan inti yang terbaik adalah menggunakan inti lilitan dengan pipa besi, yaitu kenaikan mencapai 4,09 % untuk torsi , 4,09% untuk daya dan untuk sfc mengalami penurunan mencapai 10,09 % dari kondisi setandar
Geochemical of Karst Water in the Western part of Gunungkidul District Area
Get PDFThe geological condition of the study area is included in the karst of the Panggang hydrogeological subsystem. This karst area is characterized by the presence of surface water and groundwater, which is distinctive, where the water is interesting to be studied, especially on its hydrochemistry. By knowing hydrochemistry, this research wants to know about the relationship between surface water and groundwater. The method was a hydrogeological survey and accompanied by hydrochemical testing of dolines (surface) water and groundwater. The data have been analyzed by some hydrochemical diagrams such as Schoeller, Piper, Durov, and Collins diagrams. Springs emerge from reef limestone aquifers (Gunungsewu aquifers) in several places, supported by grains, fractures, and channels porosities. Both groundwater and surface water are colorless (46 - 350 TCU) and clear (3 - 19 NTU) with a pH of 6.8 - 8.1 and TDS 76 - 308 ppm. Groundwater shows the Ca – bicarbonate and Ca, Mg - bicarbonate types, whereas dolines (surface) water has Ca, Mg - bicarbonate types. Groundwater and surface water show relatively similar hydrochemical facies. Enrichment of hydrochemical groundwater is greater in springs than in dolines. The doline water may not correlate with each other, and it means that the groundwater flows to dolines maybe not be interconnected. Thus, water in the karst area may flow in all directions, depending on the porosity of the controlling channels. Water in the study area is young, indicated by the Ca2+ and HCO3- dominant ions, supported by ion exchange and simple dissolution processes
