Penelitian ini bertujuan untuk mengivestigasi pengaruh penambahan 30 wt.% aluminium silikat serta variasi suhu sinter terhadap densitas dan kekerasan material glass-ceramics berbasis fly ash yang tervitrifikasi. Fly merupakan limbah hasil pembakaran batu bara dari Pembangkit Listrik Tenaga Uap Suralaya telah lama menjadi permasalahan lingkungan. Sebagai upaya mitigasi dampak tersebut, penelitian mengeksplorasi pemanfaatan dalam produksi glass-ceramics. Sampel berbentuk silinder dengan...

Background Study: There are small business owners who have not been able to choose the right strategy implement digital marketing increase sales. Purpose: This study aims examine strategies used by retail in implementing increasing level of sales their business. Method: The method this is a qualitative research with multiple case models. Data collection through semi-structured interviews 6 Semarang City successfully implemented technological innovation levels. Sources data that support were...

Perovskite based solar cells have attracted interest as low-cost and high-efficiency due to their great performance, with efficiency up 20.1%. One type of hole transport material (HTM) used in perovskite is copper iodide (CuI) thin film. CuI inexpensive has high mobility compared other HTMs commonly cells. However, diisopropylsulfide solvent, which dissolve the preparation process, a malodorous toxic compound. Therefore, objective this research was develop synthesis method for film in-situ...

Salah satu teknik pengawetan ikan yang sangat banyak dimanfaatkan pada saat ini adalah pengasapan. Pada umumnya proses pengasapan masih secara tradisional dan menggunakan oven konvensional. Metode tersebut merupakan cara mudah untuk melakukan ikan. Tujuan penelitian mengetahui efisiensi alat dengan sistem rotari horizontal. Alat terdiri dari ruang pengasapan, tungku pembakaran, dudukan lele rotari, motor DC, roda gigi, rantai. Kapasitas system 9 kg basah. Ikan digunakan cakalang. Pengasapan...

Kanker paru-paru merupakan penyakit yang disebabkan oleh keganasan tumor dari bronkus. Pada tahun 2020 terdapat kasus kematian mencapai 30.843 jiwa. Agar menghambat angka akibat kanker paru-paru, diperlukan alat untuk deteksi dini paru-paru. penelitian ini menggunakan dataset memiliki 309 data. Teknik uji digunakan pada adalah percentage split dan k-fold cross validation dengan algoritma naive bayes iterative dichotomizer 3 (ID3). Parameter penilaian menentukan terbaik akurasi, presisi...

Observation is a process of systematic observation human activities and physical settings where these take place continuously from natural locus activity to produce facts. This research uses qualitative approach describe explain the choice English as Foreign Language (EFL) pre-teacher method. Through interviews with 10 pre-teaching students, results show variety views regarding methods. In general, participant dominates method that considered most effective, because it provides an in-depth...

Miopia merupakan salah satu gangguan penglihatan yang memiliki prevalensi tinggi di dunia dan hampir 90% miopia terjadi negara berkembang. Meskipun penyebab pasti masih belum jelas, namun bukti-bukti ada menunjukkan bahwa multifaktorial berhubungan dengan faktor keturunan (genetik) lingkungan. Salah lingkungan adalah lamanya aktivitas melihat dekat. Penelitian ini bertujuan untuk mengetahui adakah pengaruh jarak dekat terhadap angka kejadian pada Mahasiswa Fakultas Kedokteran Universitas...

Komposit menjadi salah satu material teknik yang banyak diteliti beberapa tahun belakang ini karena memiliki sifat fisis, mekanik dan termal baik sehingga sangat diaplikasikan di bidang industri. Selain itu, komposit juga diketahui berpeluang untuk digunakan sebagai penyerap bunyi. Hal menjadikan berdaya-guna optimal dari segi mekanik, ataupun akustik. Penelitian bertujuan mengetahui pengaruh orientasi serat pada akustik (serapan bunyi) pinang. Pada penelitian ini, pinang filler bermatrik...

Cassava is tropical plants, productive and easily cultivated so it expected to be one of the solutions improve Indonesia's national food security. Mocaf fermented cassava flour products using microorganisms. replace use wheat which its necessity escalated through ages, while area as a raw material not fitted climate Indonesia. This research performed some sort branded yeast for producing Mocaf, taken instance Fermipan, Saf-Instant yeast, tempe raprima tapai unbranded bread yeast. It also...

The performance of a power plant can be known from the calculation efficiency in generating sector. Steam plants utilize series energy conversion processes including: chemical into thermal when extracting heat coal as fuel to boilers, mechanical turbines and electrical generators. Like other steam plants, Teluk Sirih PLTU located Bungus Kabung, West Sumatra has same production process. it's just that source water is taken sea so it requires special treatment turn suitable for producing used...

Tantangan bagi pemerintah daerah dalam melaksanakan pemberian bantuan perbaikan rumah adalah memutuskan siapa yang berhak memperoleh rumah. Masalah ini dapat diatasi dengan membuat sistem peringkat efektif dan efisien untuk menerima Dengan memakai metode weighted product (WP) diharapkan bisa meringankan, mempermudah memperlancar kinerja saat memilah kandidat penerima Yang dilakukan menentukan jumlah nilai kriteria ditentukan setiap alternatif. Dihitung manual menggunakan 11 kriteria,...

This research aims to investigate the ability of sound absorption coefficient and acoustic impedance Palm Frond Fiber Composites using one-microphone tube method. We used Fibers as a filler pine resin an alternative adhesive composite with volume fraction 50%: 50%, 60%: 40%, 70%: 30%, 80%: 20%, 90%: 10%. The composites were studied at 500, 1000 Hz, 1500 2000 2500 Hz frequency. results showed that highest was found in frequency 70%:10%. response fiber composition 90% test range 500 -1500 Hz....

Penelitian ini merupakan penelitian tindakan kelas (PTK) bertujuan untuk mengetahui peningkatan hasil belajar dan kemampuan berpikir kritis setelah diterapkannya pembelajaran dengan menggunakan model Students Teams Achievement Division (STAD) pada materi koloid. Tiap siklus terdiri atas perencanaan, pelaksanaan, observasi, refleksi. Subjek adalah 33 peserta didik XI MIPA 1 SMAN 10 Banjarmasin. Teknik pengumpulan data yang digunakan yaitu wawancara, tes, dokumentasi. Data terkumpul kemudian...

Salah satu teknik pengawetan ikan yang sangat banyak dimanfaatkan pada saat ini adalah pengasapan. Pada umumnya proses pengasapan masih secara tradisional dan menggunakan oven konvensional. Metode tersebut merupakan cara mudah untuk melakukan ikan. Tujuan penelitian mengetahui efisiensi alat dengan sistem rotari horizontal. Alat terdiri dari ruang pengasapan, tungku pembakaran, dudukan lele rotari, motor DC, roda gigi, rantai. Kapasitas system 9 kg basah. Ikan digunakan cakalang. Pengasapan...

This study aimed to determine: (1) the development process of Ular tangga nusantara (Larganusa) or Nusantara ladder snake learning media; (2) appropriateness media Larganusa; (3) response teachers and students (4) increase in student achievement as a result using these (5) effectiveness Larganusa. was research which used Borg Gall model. Data were collected through interviews, questionnaires, tests analyzed descriptively. The results follows: Larganusa developed from information gathering...

Penelitian ini bertujuan untuk mengetahui rancangan dari aplikasi Goiizu sebagai pembelajaran kosakata dasar Bahasa Jepang atau Shokyuu Goi. Media dibuat menggunakan Adobe Flash Professional CS6. Metode yang digunakan pada jurnal adalah metode pengembangan model ADDIE (Analysis, Design, Development, Implementation, dan Evaluation). Penjelasan perancangan media terdapat beberapa langkah, yakni tampilan pembuka hingga menu profil. membahas tentang dengan materi diambil buku NIHONGO KIRAKIRA...

Natural fiber composite materials have been widely applied for various purposes, one of which is reducing noise. Many efforts tried to reduce noise by using sound absorbing such as glasswool, rockwool, and gypsum absorbers, but because the high price bad impact on health, many studies conducted find that are practical, cheap, abundant availability in nature, natural an alternative commercial materials. In this study, we want know effect composition palm fronds with polyester resin can affect...

Areca nut Midrib is one of agricultural waste that has many benefits to be recycled for household purposes such as plates, jars and others. Moreover, researchers, areca midrib fiber was used a filler composites material. From several studies it known this material good potential in because its mechanical properties. In addition, also considered sound absorber. Therefore, research will investigate the ability absorption from various composition. We fibers pine sap matrixof composite with...

The excessive use of fossil fuels has many negative impacts on the environment and health. Many studies have been conducted to find solutions this problem, such as oxy-hydrogen gas (HHO) an alternative reduce a source energy in vehicles other applications. objective research is compare performance wet type HHO generator using two types electrodes, stainless steel plate galvanized plate. Both generators nine electrodes with dimensions 130 mm x 60 consisting plates at positive pole (anode),...

Organolead halide has attracted great attention for application in perovskite solar cells due to its high power conversion efficiency (PCE) of up 20.1%. One the most common materials is lead based reagent. In this research, we have synthesized organolead with extracted from solder wire. preparation procedure, first PbCl2 and PbI2 are produced by reacting wire NaCl KI, which used as basic substance material. Then, order get solution, powders reacted methylamine iodide (MAI) dimethylformamide...

Penelitian ini bertujuan untuk mengetahui pengaruh dari variasi urutan lapisan terhadap sifat akustik dan termal komposit ramah lingkungan. Pada penelitian ini, serat tebu digunakan sebagai bahan penguat getah pinus perekat. Serat dikelompokkan menjadi dua kelompok yaitu besar (diameter sekitar 0,37-0,32 mm) kecil 0,12-0,17 mm). Komposit dicetak dengan perbandingan fraksi volume sebesar 70%:30%, ketebalan 0,5 cm. Papan berdimeter berbeda tadi disusun diameter (b-b), (b-k), (k-b) (k-k). Sifat...

Pronunciation is a part of speaking skills which can be directly and clearly observed known. When someone speaks in English, the person who’s listening will immediately identify pronunciation that as well mistakes they made. The main problem understanding different accents because students don't fully understand pronunciations from regions. aims this study are: to abilities English Education at State Islamic University Sumatra Utata terms regions difficulties faced by North learning...