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STUDY ON BIOROCK® TECHNIQUE USING THREE DIFFERENT ANODE MATERIALS (MAGNESIUM, ALUMINUM, AND TITANIUM) Zamani, Neviaty P.; Bachtiar, Ramadian; Madduppa, Hawis H.; Adi, Jhoni Wahyu; Isnul, Jeddah; Iqbal, Muhamad; Subhan, Beginer
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 2 No. 1 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.332 KB) | DOI: 10.29244/jitkt.v2i1.7858

Abstract

Biorock® technique is the earliest methods to rehabilitate the damage of coral reef ecosystem. Its improvement is need to carry on since it is subject to some inhibitions in particular the dependence of expensively-imported Titanium (Ti) as the anode materials. The main purpose of this research was to find the best anode material as a possible subtitution which can be economically and easily to apply in Indonesia. Therefore we compared Titanium (Ti) with two other potential anodes material (Magnesium-Mg, and Aluminum (Al). The laboratory study was carried out for two days period (48 hours) in the stagnant sea water aquaria. Four aquarium tanks were treated by different electric current treatment (1 Ampere, 2 Ampere, 3 Ampere, and 5 Ampere, respectively). The reduction of electrode weigh (anode and cathode) was measured. During the experiment, water quality (i.e. pH, and salinity) and mineral waters (calcium) were collected every 6 hour in 48 hours. The solid form of calcium carbonate was analyzed using XDS (X-ray Dispersion Spectrophotometer). The accretion rates on cathode and anode decay were compared between anodes which were treated by different electrical current. Based on the study, three anodes (aluminum, magnesium and titanium) showed different respond. Titanium and Magnesium anode showed electric current affected accretion rate (P < 1), while for aluminum anode showed no differences on treatments.Keywords: mineral accretion, Biorock®, anode, coral reef rehabilitation, accretion rate, anode decay rate, mineral uptake
REFLEKSI KEBENARAN: PRINSIP KEJUJURAN SEBAGAI KOMUNIKASI SPIRITUAL ANAK DI ERA DIGITAL Iqbal, Muhamad; Prawening, Cesilia
al-Balagh : Jurnal Dakwah dan Komunikasi Vol 3, No 2 (2018)
Publisher : Fakultas Ushuluddin dan Dakwah IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (787.081 KB) | DOI: 10.22515/balagh.v3i2.1402

Abstract

The digital era is shown by the swift flow of information that is directly consumed by every layer of society, including children. Children who always witness public lies with claims of religious truth result in low social and emotional attitudes of children. This type of research is library research and this research is a qualitative descriptive study. Research concludes that the principle of honesty through reflective efforts will provide space for awareness of God and humans. This paper contributes to describing the understanding of spiritual communication in the digital era
DESAIN SISTEM KONTROL SUDUT PITCH, ROLL, DAN YAW PADA MODEL PESAWAT FIXED WING DENGAN METODE KONTROL OPTIMAL LINEAR QUADRATIC INTEGRAL TRACKING (LQIT) Iqbal, Muhamad; Triwiyatno, Aris; Setiyono, Budi
TRANSIENT TRANSIENT, VOL. 3, NO. 2, JUNI 2014
Publisher : TRANSIENT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (445.819 KB)

Abstract

Abstrak UAV atau Unmanned Aerial Vehicle adalah kendaraan udara tanpa awak yang memiliki suplai tenaga sendiri. Pada umumnya pilot harus mengendalikan pesawat sepanjang waktu agar pesawat tidak hilang kendali. Oleh sebab itu diperlukan sistem kontrol yang dapat mengatur dan mengendalikan pesawat dengan baik dan tepat. Pada tugas akhir ini akan dirancang dan disimulasikan sistem kontrol untuk mengendalikan uav berupa pesawat fixed wing. Sistem kontrol dibuat agar dapat mengendalikan sudut pitch, roll, dan yaw dari pesawat fixed wing sesuai dengan referensi. Metode yang digunakan dalam membuat sistem kontrol tersebut adalah kontrol optimal Linear Quadratic Integral Tracking(LQIT). Dibuat dua model pesawat fixed wing, yaitu model linier dan model nonlinier. Perancangan sistem kontrol dibuat pada model linier dari pesawat, kemudian kontroler yang didapat pada model linier diaplikasikan untuk mengkontrol model nonlinier pesawat fixed wing. Dilakukan 3 pengujian untuk sistem kontrol yang dihasilkan, yaitu dengan referensi input step, input sinus dan input dari blok signal builder pada MATLAB. Dari hasil pengujian, sistem kontrol optimal LQIT yang dibuat dapat dengan baik mengkontrol sudut pitch dan roll sesuai dengan referensi yang diberikan. Sementara untuk sudut yaw, sistem kontrol kurang baik untuk mengkontrol agar dapat mengikuti referensi. Kata kunci: UAV, pitch, roll, yaw, LQIT, MATLAB  Abstract UAV is an unmanned aerial vehicle that has it own power supply. Commonly, a pilot must control the plane everytime in order the plane doesnt lose control. Therefore, a control system is needed to control the plane in accurate and precise way. In this final project, a control system will be designed and simulated to control unmanned aerial vehicle which is a fixed wing plane. Control system is designed to control the pitch, roll, and yaw angle from the fixed wing plane according to reference. Control Methode that used in this final project is Linear Quadratic Integral Tracking (LQIT) optimal control. Two fixed wing plane model was designed, there are linear model and nonlinear model. Control system design was built from linear model of the plane, and then control system that designed, will be used for nonlinear model of fixed wing plane. 3 testing was performed to the control system that was designed, reference with step input, sinus input, and signal builder block from MATLAB input. From testing result,.LQIT control system that was designed was very good to control pitch and roll degree in accordance to reference. But for yaw degree, LQIT control system was deficient to control yaw degree in accordance to reference. Keywords: UAV, pitch, roll, yaw, LQIT, MATLAB
PEMANFAATAN HIGHWAY SAFETY MANUAL (HSM) DI INDONESIA DALAM MEMPREDIKSI KECELAKAAN PADA SEGMEN JALAN Iqbal, Muhamad; Tjahjono, Tri; Marino, Alan
Jurnal Transportasi Vol 12, No 3 (2012)
Publisher : Jurnal Transportasi

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Abstract

The aims of this study were to investigate the variables affecting the highway safety function and to evaluate the prediction of frequency and accident fatality by using HSM method in several roadway segments in Indonesia. The studied road segments were toll road segments such as Jakarta–Cikampek, Jakarta–Bogor–Ciawi (JAGORAWI), and Jakarta–Tanggerang toll road. The estimation of frequency and the fatality of accidents were developed from the prediction models, from which a combination of Safety Performance Functions (SPFs) and Empirical Baves method (EB). Based on the calculation, HSM method can be used to predicting accidents frequency in toll road segments with appropriate calibration factor (C) for each toll road or with consolidated calibration factor about 1,95. That value represents the accident rates on toll road segment in Indonesia is twice as big as America roadway segment.Keywords: HSM, SPFs, Calibration Factor, EB method, Toll Road
PEMANFAATAN HIGHWAY SAFETY MANUAL (HSM) DI INDONESIA DALAM MEMPREDIKSI KECELAKAAN PADA SEGMEN JALAN Iqbal, Muhamad; Tjahjono, Tri; Marino, Alan
Jurnal Transportasi Vol 12, No 3 (2012)
Publisher : Jurnal Transportasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/jt.v12i3.494.%p

Abstract

The aims of this study were to investigate the variables affecting the highway safety function and to evaluate the prediction of frequency and accident fatality by using HSM method in several roadway segments in Indonesia. The studied road segments were toll road segments such as Jakarta–Cikampek, Jakarta–Bogor–Ciawi (JAGORAWI), and Jakarta–Tanggerang toll road. The estimation of frequency and the fatality of accidents were developed from the prediction models, from which a combination of Safety Performance Functions (SPFs) and Empirical Baves method (EB). Based on the calculation, HSM method can be used to predicting accidents frequency in toll road segments with appropriate calibration factor (C) for each toll road or with consolidated calibration factor about 1,95. That value represents the accident rates on toll road segment in Indonesia is twice as big as America roadway segment.Keywords: HSM, SPFs, Calibration Factor, EB method, Toll Road
PENGARUH PENAMBAHAN MIKROALGA Spirulina platensis DAN MIKROALGA Skeletonema costatum TERHADAP KUALITAS SOSIS IKAN BANDENG (Chanos chanos Frosk) Iqbal, Muhamad; Sumardianto, -
Jurnal Pengolahan dan Bioteknologi Hasil Perikanan Volume 5, Nomor 1, Tahun 2016
Publisher : Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.26 KB)

Abstract

Perkembangan konsumsi masyarakat terhadap pangan semakin meningkat. Pengkayaan produk pangan menjadi poros utama yang harus dilakukan untuk mengatasi masalah penyediaan pangan yang memiliki kandungan gizi tinggi, menyehatkan, dan diterima konsumen. S. platensis dan S. costatum yaitu mikroalga yang memiliki kandungan protein dan betakaroten yang tinggi yang diperlukan oleh tubuh. Saat ini makanan cepat saji seperti sosis ikan menjadi pilar untuk menarik masyarakat mengkonsumsinya. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh perbedaan penambahan mikroalga terhadap kualitas sosis ikan. Materi yang digunakan dalam penelitian ini adalah ikan bandeng (Chanos-chanos Forsk), mikroalga S. platensisdan mikroalga S. costatum, dengan desain percobaan Rancangan Acak Lengkap (RAL) yang terdiri dari 3 perlakuan yaitu penambahan mikroalga S. platensis 10%, penambahan mikroalga S. Costatum 10% dan tanpa penambahan mikroalga dalam subtitusi dengan tepung tapioka dilakukan 3 kali pengulangan. Parameter pengujian yaitu kadar protein, kadar betakaroten, stabilitas emulsi, kekuatan gel, aktivitas air (aw) dan sensori. Data dianalisis menggunakan ANOVA, dilanjutkan uji BNJ untuk data parametrik sedangkan Kruskal-Wallis untuk data non-parametrik. Hasil penelitian menunjukkan bahwa perbedaan penambahan mikroalga berpengaruh nyata (P<0,05) terhadap kadar protein, kadar betakaroten, stabilitas emulsi, kekuatan gel, aktivitas air (aw) dan sensori. Sosis ikan dengan penambahan mikroalga S. platensis 10% memiliki hasil terbaik dari semua parameter yang diujikan dibandingkan dengan  penambahan mikroalga S. costatum 10% dan kontrol. The development of human consumption on foods is increasing. Therefore, food enrichment is becoming the main focus to overcome the problems on food security that are high in nutritional value, quality, healthy, and acceptable to consumers. S. platensis and S. costatum are two kinds of microalgae that contain high protein and beta-carotene needed by human body. Nowadays, people have their preferences on fast food, such as fish sausage, which is favorable to consume. This research aims to figure out the impact of the difference in microalgae addition on the quality of fish sausage. The materials used in this research were milkfish (Canos-canos Forks), two kinds of Microalgae: S. platensis and S. costatum. The experiment design used was completely randomized design that consists of three different treatments: the addition of 10% S. platensis, the addition of 10% S. costatum, and without the addition of any Microalga in subtitution of the starch in thriplicates. The experimental parameters were protein levels, beta-carotene levels, emulsion stability, gel strength, water activity (aw) and sensory test. The data is analyzed using ANOVA, followed by Honestly Significant Difference (HSD) test on parametric data, meanwhile Kruskal-Wallis was used on non-parametric data. The result showed that the different in the addition of microalgae has a significantly impact (P<0,05) on; protein levels, beta-carotene levels, emulsion stability, gel strength, water activity (aw) and sensory test. Fish sausage with the addition of 10% S. platensis produced the best result of all the tested parameters, when compared to those with the addition of 10% S. costatum and without the addition of any microalga (control).
Karakterisrik Fisiko-Kimia dan Sensoris Sosis Ikan Gabus dengan Kombinasi Jamur Tiram (Pleorotus sp.) Iqbal, Muhamad; Supriadi, Agus; Nopianti, Rodiana
Jurnal FishtecH Vol 4, No 2 (2015)
Publisher : Jurnal FishtecH

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Abstract

The purpose of this research was to know the characteristics physic, chemical, and sensory fish sausage of snakehead with a combination of oyster mushrooms. This research method using a Random Block Design (RBD). The parameters observed were gel strength and whiteness, water content, ash, fat, protein and crude fiber and sensory analysis include the quality hedonik and folding test. The results showed if the addition of oyster mushroom effect on gel strength and whiteness. For gel strength values from 143.33 to 475.43 gf, whiteness 54.52 to 70%. The best treatment quality fish sausage of snakehead with a combination of oyster mushrooms was the treatment with (95% snakehead and 5% oyster mushrooms). Besides the addition of oyster mushrooms on sausages provide fiber that useful for the body. The examination chemical testing addition of oyster mushrooms increase all observed from the water, ash, protein, fat and crude fiber.
Pengaruh Bidang Keahlian Guru Dalam Pembelajaran Terhadap Pengembangan Karakter Siswa Saprya, Saprya; Wiyanarti, Erlina; Iqbal, Muhamad
JURNAL PENDIDIKAN ILMU SOSIAL Vol 23, No 1 (2014)
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jpis.v23i1.2057

Abstract

Guru sebagai juru taman memiliki makna yang mendalam, yang mana taman akan diolah menjadi tandus atau subur tergantung dari bagaimana seorang guru dapat mengelola taman tersebut. Taman disini kalau diibaratkan sebagai siswa yang berada di dalam kelas, maka memiliki arti bahwa baik dan tidaknya kelas tersebut tergantung dari guru yang memiliki kewenangan untuk mengelola kelas dengan baik.  Begitu juga dengan pengembangan karakter bagi siswa dibutuhkan figur teladan yang dimiliki oleh guru dengan bidang keahlian yang sesuai dengan tuntutan materi pembelajarannya. Namun sayangnya, masih banyak yang menganggap bahwa pendidikan karakter hanya cukup diajarkan sebatas pengetahuan. Hal ini mengakibatkan pendidikan karakter seolah-olah terasa hambar dan cenderung membosankan. Oleh karena itu dibutuhkan sosok guru teladan yang memiliki keahlian dalam pembelajaranlah yang akan mampu menjadikan peserta didik yang berkarakter.Kata kunci: karakter, keahlian guru, pengelolaan kelas.
Cemetery Pilgrimage Tradition of Mahmud Custom Village to establish Social Motivation Faturochman, Rizky; Nurbayani, Siti; Iqbal, Muhamad
International Journal Pedagogy of Social Studies Vol 3, No 1 (2018): Research Social Study
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijposs.v3i1.13479

Abstract

This study was started by the curiosity of the writer towards pilgrimage tradition and social motivation of pilgrimage who conduct cemetery pilgrimage in Mahmud Village. cemetery pilgrimage tradition is defined as an individual or a group movement that visit holy places. This site is considered as a sacred or holy, due to an exceptional event that was occurred in that place or there several sacred things that are placed there. This condition is related with a historical or legendary event. Cemetery Pilgrimage Tradition mostly are conducted by many people, for example in Mahmud Village, Bandung. The aims of this study were to recognize the background from the pilgrims, to recognize social motivation of the pilgrims before and after they conducted cemetery pilgrimage. The method used in this study is a descriptive case study by using qualitative approach. The data is gathered from natural setting as a direct source. Based on the analysis towards those data and fact. Including:  self and group motivation, willingness to recognize cemetery site in mahmud village, willingness to feel calm after conducting cemetery pilgrimage, seeking for blessing, and expecting to fulfill his or her needs immediately by Allah SWT.
The Effectiveness of Ultraviolet, Ozonization and Reverse Osmosis as Disinfection Method in Drinking Water Refill Stations Sari, Sri Yusnita Irda; Iqbal, Muhamad; Cahyadi, Adi Imam; Respati, Titik; Raksanagara, Ardini Saptaningsih; Agoes, Ridad
Global Medical & Health Communication (GMHC) Vol 6, No 3 (2018)
Publisher : Faculty of Medicine Universitas Islam Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/gmhc.v6i3.3427

Abstract

The number of drinking water refill stations (DWRS) was increased rapidly because high of mid-low urban community need to get affordable drinking water. Water treatment methods in DWRS are varying even many DWRS uses more than one disinfection method to increase the effectiveness. The quality of many DWRS productions was reported unstandardized, however not yet the study to evaluate the effects of the water treatment method used. This study aimed to compare the effectiveness of various water treatment methods in DWRS to identify which method is the most effective. The study used a cross-sectional approach conducted in 3 groups of water treatment methods, namely ultraviolet, ultraviolet + ozonization, and a combination of ultraviolet + ozonization + reverse osmosis with each group consisted of 40 DWRS. The survey was conducted in July–September 2017 in Bandung municipality by structured interview. Examination of microbiological parameters of raw and processed drinking water samples using membrane filter method. Water samples from raw water and drinking water from treatment process were taken from each DWRS to be tested for the microbiological parameter by using the membrane filter method. Comparison of the effectiveness was analyzed using the Wilcoxon rank sum test and assessment of log removal reduction. The result showed that there was significantly different in the effectiveness of coliform removal between the three groups. The improvement for controlling and training particularly for the procedure and maintenance of water treatment equipment to the owners/workers in DWRS is urgently needed as the concern of related authority. In conclusion, the water treatment method using reverse osmosis and ultraviolet is the most effective disinfection method compared to the ozonization method. The usage of more that one method of water treatment at the same time relate to the lower percentage of the effectiveness compares to the usage of only one method. EFEKTIVITAS ULTRAVIOLET, OZONISASI, DAN REVERSE OSMOSIS SEBAGAI METODE DESINFEKSI DEPOT AIR MINUM ISI ULANGPerkembangan depot air minum isi ulang (DAM) melaju dengan pesat karena masyarakat menengah ke bawah perkotaan membutuhkan air minum dengan harga yang terjangkau. Metode pengolahan air baku menjadi air minum di DAM bervariasi bahkan tidak jarang digunakan lebih dari satu metode desinfeksi untuk meningkatkan efektivitasnya. Kualitas produksi DAM banyak yang dilaporkan tidak sesuai dengan standar, namun belum terdapat penelitian yang mengevaluasi pengaruh metode pengolahan air yang digunakan. Penelitian ini bertujuan membandingkan efektivitas berbagai metode pengolahan air di DAM sehingga dapat diketahui metode apa yang paling efektif. Penelitian ini menggunakan pendekatan cross-sectional yang dilakukan pada 3 kelompok metode pengolahan air, yaitu ultraviolet, ultraviolet + ozonisasi, dan kombinasi ultraviolet + ozonisasi + reverse osmosis dengan tiap-tiap kelompok terdiri atas 40 DAM. Survei dilakukan pada Juli–September 2017 di Kota Bandung dengan melakukan wawancara terstruktur. Sampel air baku dan air minum hasil olahan diambil dari setiap DAM untuk diperiksa parameter mikrobiologinya menggunakan metode filter membran. Perbandingan efektivitas dianalisis menggunakan Wilcoxon rank sum test dan penilaian log removal reduction. Hasil penelitian menunjukkan bahwa terdapat perbedaan efektivitas yang signifikan pada ketiga kelompok terutama efektivitas terhadap coliform. Perlu upaya pengawasan dan pelatihan khususnya mengenai teknis pemakaian dan pemeliharaan alat pada pemilik/pekerja DAM yang harus menjadi perhatian pemerintah dan pihak terkait. Simpulan, metode pengolahan air menggunakan reverse osmosis dan ultraviolet merupakan metode desinfeksi yang paling efektif dibanding dengan metode ozonisasi. Pemakaian lebih dari satu metode desinfeksi pada saat yang bersamaan menyebabkan persentase efektivitas menjadi lebih rendah dibanding dengan yang menggunakan hanya satu jenis metode desinfeksi.