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STUDI PETROGRAFI DAERAH BAGELEN KABUPATEN PURWOREJO PROVINSI JAWA TENGAH Dian Susri Nurhaci
Jurnal Sains Dasar Vol 7, No 1 (2018): April 2018
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Abstrak Lokasi penelitian terletak di Provinsi Jawa Tengah tepatnya di Kecamatan Bagelen, Kabupaten Purworejo yang berdasarkan peta fisiografi daerah Jawa Tengah dan Jawa Timur termasuk dalam Zona Kubah dan Perbukitan dalam Depresi Sentral, rangkaian Pegunungan Serayu Selatan. Daerah Kabupaten Purworejo dibagi menjadi tiga satuan bentang alam, yakni Pegunungan Kulonprogo, Pegunungan Serayu Selatan, dan Dataran Purworejo. Hasil analisis petrografi batuan beku di daerah Bagelen, Purworejo, Jawa Tengah berupa batuan Andesit. Secara petrografi batuan beku andesit memiliki tekstur Profiro afanitik dengan fase fenokris di dominasi oleh mineral Plagioklas, Hornblenda, Piroksin dan opak dengan proporsi yang berbeda dalam setiap batuan, sedangkan fase masadasarnya didominasi oleh mikro-mikrokristalin plagioklas, piroksen, hornblenda dan mineral opak. Komposisi batuan andesit yang dianalisa melalui metode petrografi menandakan bahwa di daerah tersebut diperkirakan berhubungan dengan hasil proses adanya aktivitas gunung api yang pernah ada sebelumnya. Kata kunci: Petrografi, gunung api, geologi purworejoThe research location is situated in the province of Central Java, precisely in the District Bagelen, Purworejo which is based on a map of the physiographic region of Central Java and East Java included in the Dome Zone and hills in the Central Depression, South Serayu Mountains series. Purworejo district area is divided into three units of the landscape, the mountains Kulonprogro, South Serayu Mountains, and Plains Purworejo. The results of petrochemical analysis of igneous rocks in Bagelen, Purworejo, Central Java in the form of Andesite rocks. In petrography of igneous rocks of andesite has Profiro afanitik texture with phenocrysts phase dominated by Plagioclase minerals, hornblende, piroksin and opaque with different proportions in every rock, whereas masadasarnya phase is dominated by micro-microcrystalline plagioclase, pyroxene, hornblende and opaque minerals. Andesite composition are analyzed by petrographic methods indicates that in the area thought to be related to the results of the volcanic activity that never existed before. Keywords: Petrography, volcano

MODIFICATION OF VOLCANIC ASH OF KELUD AS SELECTIVE ADSORBENT MATERIAL FOR Zn(II) AND Cr(VI) METAL IONS Susila Kristianingrum; Endang Dwi Siswani; Sulistyani Sulistyani
Jurnal Sains Dasar Vol 7, No 1 (2018): April 2018
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v7i1.22246

This research aims to prepare an adsorbent from Kelud volcanic ash for better adsorption efficiency of Zn(II) and Cr(VI) than Kieselgel60GE'Merck. Adsorbent synthesis has been carried out by dissolving 6 grams of volcanic ash, activated at 700 oC for 4 hours and washed with HCl 0.1 M into 200 mL of sodium hydroxide 3 M with stirring and heating at 100 °C for 1 hour. Then, sodium silicate filtrate was neutralized using hydrochloric acid. The mixture was allowed to stand for 24 hours then filtered and washed with aqua DM, then dried and crushed. The procedure was repeated for nitric acid with a contact time of 24 hours. The products were then characterized using FTIR subsequently determined acidity, moisture content, and tested for its adsorption of the Zn(II) and Cr(VI) ions, by using AAS. The results showed that the type of acid that produced highest rendemen is AK-HCl-3M i.e. 25.50%, acidity of the synthesized adsorbent silica gel all have similarities with Kiesel gel 60G E' Merck ie 6.302mmol/g and the water content of the silica gel adsorbent synthesized similar to Kiesel gel 60G E' Merck i.e adsorbent AK- HCl-3 M. The character of the functional groups of silica gel synthesized all have similarities with Kiesel gel 60G E'Merck as a comparison. Qualitative analysis by FTIR indicates that it has formed a bond of Si-O-Si and Si-OH. The optimum adsorption efficiency of the metal ion Zn(II) obtained from AK-HNO3-3 M adsorbent is equal to 63.24% for electroplating waste and the optimum adsorption efficiency of the Cr(VI) metal ion obtained from the adsorbent AK- HNO3-3M is equal to 64.01% for tannery waste. Keywords: Kelud, Volcanic Ash, Adsorbent

THE APPLICATION OF DEEP NEURAL NETWORK FOR BREAST CANCER CLASSIFICATION Devi Nurtiyasari; Abdurakhman Abdurakhman; Muhamad Rashif Hilmi
Jurnal Sains Dasar Vol 7, No 1 (2018): April 2018
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Breast cancer is one of the most common cancers, especially for women. Early detection of breast cancer may increase the survival rate of patients significantly. Detecting breast cancer from breast image can be done by classification process. There are so many classification models which can be used for the classification process, such as neural network, fuzzy, neuro fuzzy, wavelet neural network, wavelet neuro fuzzy, etc. This research propose one of the neural network variant, i.e. Deep Neural Network. This kind of neural network model is using at least two hidden layers on the network. The more hidden layers used the deeper the neural network will be. The architecture of Deep Neural Network used in this research is feedforward network. Classification of breast tumor using Deep Neural Network model provides results with sensitivity, specificity, and accuracy were respectively 100%, 100%, and 66.67% for training data and 100%, 20%, and 60% for testing data. Keywords: breast cancer, Deep Neural Network

THE STRUCTURE OF SOIL MESOFAUNA AND MACROFAUNA IN GRODA CAVE, GUNUNGKIDUL Andri Prasetyo; Ulfa Yulia Rohmah; Rini Winarti; Esa Chorik Darwati; Safina Audiati Afiar
Jurnal Sains Dasar Vol 5, No 2 (2016): October 2016
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Melimpahnya mesofauna dan makrofauna tanah di Gua Groda dapat menjadi indikator kemelimpahan kelelawar karena kotoran kelelawar merupakan makanan mesofauna dan makrofauna tanah. Tujuan penelitian ini untuk mengetahui struktur komunitas mesofauna dan makrofauna tanah Gua Groda serta korelasinya dengan kadar N, P, K. Metode yang digunakan yakni observasi, pengambilan mesofauna dan makrofauna tanah menggunakan teknik pit fall trap serta teknik toolgreen. Uji N, P, K tanah dilakukan di Balai Pengkajian Teknologi Pertanian (BPTP) Yogyakarta. Teknik analisis dengan menghitung indeks keanekaragaman Shanon-Wienner, indeks kekayaan Margaleff, frekuensi kehadiran mesofauna dan makrofauna tanah serta korelasinya dengan N, P, K tanah di Gua Groda. Hasil penelitian yakni teridentifikasinya 6 famili mesofauna dan 20 famili makrofauna tanah dengan indeks keanekaragaman sedang, indeks kekayaan Margaleff tertinggi pada zona remang, frekuensi kehadiran tertinggi pada zona terang yakni Formicidae (0,12), zona remang yakni Isotomidae dan Diptera (a) coklat (0,04) serta zona gelap yakni Gryllacididae (0,05). Korelasinya memperlihatkan semakin banyak kadar N,P,K tanah, maka semakin sedikit mesofauna dan makrofauna tanah yang ditemukan. Keunikan dalam penelitian ini yakni ditemukannya 1 spesies dari Isotomidae di Gua Groda, yang selama ini dianggap sebarannya kebanyakan di Sulawesi, Sumatera, Bali, Lombok, Ternate dan Papua.Kata kunci: struktur komunitas, mesofauna, makrofauna, Gua Groda Abstract The number of soil macrofauna and mesofauna in Groda Cave can be used as an indicator of bats abundance since bat droppings are food for macrofauna and mesofauna soils. The purpose of this study are to determine the community structure of Groda Cave soil macrofauna and mesofauna and its correlation with the content of N, P, K. The method used is the observation, taking of macrofauna and mesofauna soils using pit fall traps and tool green technique. Testing the N, P, K of the soil was conducted in Balai Pengkajian Teknologi Pertanian (BPTP) Yogyakarta. The analysis technique used Shannon diversity index-Wienner, Margaleff wealth index, frequency of attendance of macrofauna and mesofauna soils and its correlation with N, P, K of the land in Groda Cave. The results obtained are that six families mesofauna and 20 families macrofauna soils with moderate diversity index, the highest wealth index was in the Margaleff lit zone, the frequency of the highest attendance in the light zone is Formicidae (0.12), ie dim zones Isotomidae and Diptera (a) brown (0.04) and the dark zone is Gryllacididae (0.05). The correlation showed the more the content of N, P, K, the fewer mesofauna and macrofauna soils were found. The uniqueness found in this study is the discovery of one species of Isotomidae in Groda Cave, which has been considered spreading only in Sulawesi, Sumatera, Bali, Lombok, Ternate and Papua. Keywords: community structure, mesofauna soil, macrofauna soil, Groda Cave

Binarization and Segmentation Framework for Sundanese Ancient Documents Paulus, Erick; Suryani, Mira; Hadi, Setiawan; Sopian, Rahmat; Hidayat, Akik
Jurnal Sains Dasar Vol 6, No 2 (2017): October 2017
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Binarization and segmentation process are two first important methods for optical character recognition system. For ancient document image which is written by human, binarization process remains a major challenge.In general, it is occurring because the image quality is badly degraded image and has various different noises in the non-text area.After binarization process, segmentation based on line is conducted in separate text-line from the others. We proposedanovel frameworkof binarization and segmentation process that enhance the performance of Niblackbinarization method and implementthe minimum of energy function to find the path of the separator line between two text-line.For experiments, we use the 22 images that come from the Sundanese ancient documents on Kropak 18 and Kropak22. The evaluation matrix show that our proposed binarization succeeded to improve F-measure 20%for Kropak 22 and 50% for Kropak 18 from original Niblack method.Then, we present the influence of various input images both true color and binary image to text-line segmentation. In line segmentation process, binarized image from our proposed framework can producethe number of line-text as same as the number of target lines. Overall, our proposed framework produce promised results so it can be used as input images for the next OCR process.

THE BEST SOLUTION FOR INEQUALITIES OF A O CROSS X LOWER THAN X FROM B O DOT X USING HIGH MATRIX RESIDUATION OF IDEMPOTENT SEMIRING Susilowati, Eka; Suparwanto, Ari
Jurnal Sains Dasar Vol 5, No 1 (2016): April 2016
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Abstract A complete idempotent semiring has a structure which is called a complete lattice. Because of the same structure as the complete lattice then inequality of the complete idempotent semiring can be solved a solution by using residuation theory. One of the inequality which is explained is where matrices A,X,B with entries in the complete idempotent semiring S. Furthermore, introduced dual product , i.e. binary operation endowed in a complete idempotent semirings S and not included in the standard definition of complete idempotent semirings. A solution of inequality can be solved by using residuation theory. Because of the guarantee that for each isotone mapping in complete lattice always has a fixed point, then is also exist in a complete idempotent semirings. This of the characteristics is used in order to obtain the greatest solution of inequality . Keywords: complete lattice, complete idempotent semiring, dual Kleene Star, dual product, residuation theory

PERBANDINGAN STRUKTUR INSANG DAN KULIT IKAN TIPE REMAINER (Bathygobius fuscus) DAN SKIPPER (Blenniella cyanostigma) ZONA INTERTIDAL PANTAI GUNUNG KIDUL Sukiya Sukiya; Rizka Apriani Putri
Jurnal Sains Dasar Vol 5, No 2 (2016): October 2016
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Penelitian ini bertujuan mempelajari struktur organ pernapasan dari ikan tipe remainer (Bathygobius fuscus) dan tipe skipper (Blenniella cyanostigma), dan untuk mengetahui apakah kulit tubuh dari dua tipe ikan tersebut juga berperan sebagai tempat terjadinya pertukaran gas pernafasan. Dua spesies ikan tersebut diambil insang dan kulitnya untuk dibuat preparat mikroanatomik dengan metode paraffin, dan pewarnaan H-E (Hematoksilin-Eosin). Analisis deskriptif terhadap struktur lamellae sekunder (epithelium lamellae sekunder, dan ada tidaknya struktur pendukung), serta diukur panjangnya. Fokus pengamatan pada kulit adalah deskripsi struktur epidermis, tebal epidermis, adanya vaskularisasi, dan jumlah pembuluh darah. Data kuantitatif (panjang lamellae sekunder, tebal epidermis, dan jumlah vaskularisasi) dianalisis dengan menggunakan Student’s T-test. Hasil penelitian menunjukkan bahwa tidak terdapat perbedaan berarti antara struktur mikroanatomik insang ikan tipe remainer dan skipper, panjang lamellae sekunder relatif sama, juga tidak ditemukan adanya struktur sekunder pada insang yang diduga berperan untuk menyimpan udara cadangan ataupun membantu proses pernapasan. Struktur kulit menunjukkan perbedaan terutama pada bagian kepala dan bagian posterior tubuh. Epidermis di bagian kepala dan bagian posterior (peduncula) pada ikan tipe remainer lebih tebal dibandingkan ikan tipe skipper. Kulit ikan tipe skipper tervaskularisasi dengan baik, banyak ditemukan kapiler darah pada jaringan ikat dermis yang berbatasan langsung dengan epidermis. Jumlah kapiler darah pada ikan tipe remainer lebih sedikit dan tidak berdekatan dengan epidermis sehingga tidak dapat digunakan untuk difusi gas melalui permukaan kulit. Pengamatan struktur kulit mengindikasikan bahwa ikan tipe skipper dapat menggunakan kulit sebagai tempat pertukaran gas pernapasan. Kata kunci: struktur insang, kulit, ika tipe remainer dan skipper, zona intertidal Abstract This research aimed to study the microanatomical structure of respiratory organ of two group of fish that live in tidepools. One group is remainers which stay inside the pools during lowtide, while the other is skippers, group of fish that have an ability to move outside water when it’s needed. This research also aimed to investigate whether skin of these species can be used as respiratory surface to overcome hypoxic condition. Two species of fish (Bathygobius fuscus of remainers group and Blenniella cyanostigma of skippers, respectively), were caught and sacrificed, then gills and skin of them were harvested. The organs then undergone further processing for microanatomical preparation with paraffin method and Hematoxylin-Eosin staining. Microanatomical structure of gills and skin then analysed descriptively. Gills were observed to study whether additional structure is presence and modification (in structure of epithelial cells and/or the length of secondary lamelae) is occured as part of morphological change to absorb more oxygen during low tide. In Skin, the thickness of epidermal layers were measured and the number of blood capilaries were counted to investigate whether skin can be used as additional respiratory surface. Quantitative data of skin and gills were statistically analysed using Student’s T-test. Results showed that there were no differences in gills structure between remainers and skippers. Additional structure in gills were absent in both species. However, quantitative measurements in skins showed that skippers have less layers of epidermal cells and high number of blood capilaries compared to remainers skin. This results indicated that skippers were able to use their skin as additional respiratory surface outside gills. Keywords: gills, intertidal zone, microanatomical structure, skin, remainers, skippers

Age and Temperature of Globular-Open Star Clusters Case Study : M3 M35 and M67 Thassana, Chewa; Maithong, Wiraporn
Jurnal Sains Dasar Vol 6, No 2 (2017): October 2017
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (527.501 KB)

In this work, the age and the temperature of the globular cluster M3 and the open clusters M37 and M67 were observed by CCD Photometer via a 0.5-meter Rithchey-Chertien Reflecting Telescope at Regional Observatory for the Public Nakhon Ratchasima, Thailand ; images were obtained of the cluster stars in B and V photometric filter. The magnitude of the cluster stars were analyzed by Iris and Aperture Photometry Tool (ATP) program. The age and temperature of M3, M35 and M67 clusters were calculated by the apparent magnitude and color index (B-V) of the Hertzsprung-Russell diagram . Our results shown that the both open cluster M35 and M67 were found to lie at a distance of 2,700 light years (832pc) from the Earth. In addition, the M35 is approximately 110 million years old and the temperature in range of 7,000 -13,000K. Meanwhile M67 is roughly 3.11 billion years old, the temperature is about 4,400K to 6,400K. However, we determined that the globular cluster M3 is approximately 11.1 billion years old and located 34,000 light years (10,420pc) away from the Earth, while temperature is around 3,600 -6,800K.

FREQUENCY COMPONENT EXTRACTION OF HEARTBEAT CUES WITH SHORT TIME FOURIER TRANSFORM (STFT) Sumarna, Sumarna; Purwanto, Agus; Agustika, Dyah Kurniawati
Jurnal Sains Dasar Vol 5, No 1 (2016): April 2016
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Abstract Electro-acoustic human heartbeat detector have been made with the main parts : (a) stetoscope (piece chest), (b) mic condenser, (c) transistor amplifier, and (d) cues analysis program with MATLAB. The frequency components that contained in heartbeat. cues have also been extracted with Short Time Fourier Transform (STFT) from 9 volunteers. The results of the analysis showed that heart rate appeared in every cue frequency spectrum with their harmony. The steps of the research were including detector instrument design, test and instrument repair, cues heartbeat recording with Sound Forge 10 program and stored in wav file ; cues breaking at the start and the end, and extraction/cues analysis using MATLAB. The MATLAB program included filter (bandpass filter with bandwidth between 0.01 – 110 Hz), cues breaking with hamming window and every part was calculated using Fourier Transform (STFT mechanism) and the result were shown in frequency spectrum graph. Keywords: frequency components extraction, heartbeat cues, Short Time Fourier Transform

MESIN PANAS FOTO-CARNOT LUBANG HITAM NON-STASIONER Yuant Tiandho
Jurnal Sains Dasar Vol 6, No 1 (2017): April 2017
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Di dalam makalah ini disajikan suatu analisis teoritik dari desain mesin panas foto-Carnot dengan sumber energi berupa lubang hitam non-stasioner. Diharapkan dari kajian ini dapat diketahui potensi penggunaan lubang hitam sebagai sumber “bahan bakar” dari suatu mesin panas. Desain mesin panas berbasis lubang hitam dikembangkan karena melalui mekanika kuantum lubang hitam dapat mengemisikan partikel dan memiliki temperatur layaknya dalam proses radiasi benda hitam. Perhitungan temperatur lubang hitam non-stasioner yang meradiasikan foton dilakukan berdasarkan gambaran tunneling dengan menggunakan metode Hamilton-Jacobi. Sebagai hasilnya, lubang hitam non-stasioner memiliki temperatur yang juga bergantung terhadap laju perubahan massa. Desain mesin panas yang dikaji dalam makalah ini terdiri dari dua buah lubang hitam non-stasioner berbeda massa sehingga memiliki perbedaan tekanan radiasi yang dapat menggerakkan piston. Secara umum, efisiensi dari mesin foto-Carnot bergantung pada massa lubang hitam, laju perubahan massa, serta suatu fungsi penyeimbang dalam metrik Vaidya.Kata kunci: mesin foto-Carnot, termodinamika lubang hitam, non-stasioner. Non-Stationary Black Hole Photo-Carnot Heat Engine Abstract This paper presents a theoretical analysis of a photo-Carnot heat engine design with an energy source from a non-stationary black hole. This study may provide a clue about the potential use of black hole as a “fuel” of a heat engine. Heat engine design was developed because according to quantum mechanics a black hole may emit particles and it has temperature like in the black-body radiation. The calculation of non-stationary black hole temperature which radiate photons is based on the tunneling picture by using the Hamilton-Jacobi method. As a result, the temperature of non-stationary black hole also depends on the mass flow rate. The model of heat engine that studied in this work contains two non-stationary black holes with different masses that have different radiation pressure to move the piston. In general, the efficiency of photo-Carnot engine depend on the mass of the black hole, the mass flow rate, and the balance function in the Vaidya metric. Keywords: photo-Carnot engine, black hole thermodynamics, non-stationary.

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