Claim Missing Document
Check
Articles

ANALISIS OIL MONITORING SEBAGAI BAGIAN PREDICTIVE MAINTENANCE UNTUK UJI KESIAPAN OPERASIONAL BIG DIGGER KOMATSU Taufiq, Ahmad; Finahari, Nurida; Fuhaid, Naif
ROTOR Vol 7, No 2 (2014)
Publisher : ROTOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (212.329 KB)

Abstract

The performances of the equipments are measured by overall equipment effectiveness (OEE). This parameter consists of availability, operation reliability and product quality. Predictive maintenance system focus on measuring the effectiveness and availability of the vehicles used in the production process. The maintenance system usually done its work by analysis the lubrication oil used in parts of the vehicles. The parameters that will be analyzed are commonly consist of two testing procedures. The first is identify the state of lubrication performance, and the second is measuring the viscosity values of oil samples. This study try to developt the further test for the oil samples in the form of analyze the metal concentration consisted in. This procedure is meant to show the rate of part wearing as the basic of concluding the PM process. The alternative method offer maintenance cost optimation by avoiding the sudden breakdown  and prolong the part lifetime. The study is taking two type Big Digger Machine as comparator. The results show that the common PM has conclusion to let the PC 2000 stay in the process meanwhile the PC 4000 facing the overhaul and replacing the spareparts. The metal inclusion testing procedure show that the PC 2000 oil samples have higher metal concentration. It means that the PC 2000 parts need replacement more than PC 4000. The PC 4000 just need the overhaul process. This finding approve that alternative PM give more accurate results than the common. Keywords: oil monitoring, predictive maintenance, metal inclusion testing, big digger engine
UPAYA PEMELIHARAAN LINGKUNGAN OLEH MASYARAKAT DI KAMPUNG SUKADAYA KABUPATEN SUBANG Taufiq, Ahmad
Jurnal Gea Vol 14, No 2 (2014)
Publisher : Rizki Offset

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Lingkungan yang terpelihara baik di Kampung Sukadaya dapat memberikan manfaat bagi kelangsungan hidup masyarakatnya. Untuk itu, diperlukan kajian upaya yang dilakukan oleh masyarakat terhadap pemeliharaan lingkungan di Kampung Sukadaya. Metode yang digunakan adalah kualitatif verifikatif. Hasil penelitian menunjukkan, nilai-nilai kearifan lokal yang berkembang di dalam kehidupan masyarakat Kampung Sukadaya dapat menjadikan lingkungan alam Sukadaya tetap lestari. Nilai-nilai kearifan lokal pemeliharaan lingkungan di Kampung Sukadaya adalah nilai adaptasi lingkungan, nilai tanggung jawab, nilai kesadaran lingkungan, dan nilai kerja sama. Nilai-nilai kearifan lokal sebagai upaya pemeliharaan lingkungan di Kampung Sukadaya tercermin dari aktifitas warga dalam memelihara sumber mata air, memelihara kelestarian hutan rakyat, memelihara kebersihan lingkungan dan semangat gotong royong masyarakat.Kata Kunci: Pemeliharaan Lingkungan
PENGENDALIAN PERSEDIAAN BAHAN BAKU DENGAN METODE ECONOMIC ORDER QUANTITY (EOQ) PADA SALSA BAKERY JEPARA Taufiq, Ahmad; slamet, Achmad
Management Analysis Journal Vol 3 No 1 (2014): Management Analysis Journal
Publisher : Management Analysis Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/maj.v3i1.3355

Abstract

Abstrak Persediaan yang optimal dalam perusahaan merupakan salah satu faktor yang penting dalam kinerja perusahaan. Jenis penelitian kuantiitatif, digunakan untuk mengkaji penerapan metode Economic Order Quantity (EOQ) dalam pengendalian persediaan bahan baku di Salsa Bakery Jepara. Hasil penelitian diperoleh jumlah persediaan optimal dengan metode Economic Order Quantity (EOQ) tepung terigu pada triwulan 4 tahun 2012 sebanyak 112 karung frekuensi 7 kali, persediaan pengaman 19 karung, melakukan pemesanan ulang (ROP) ketika persediaan di gudang tersisa 39 karung, total biaya sebesar Rp 2.308.133. Triwulan 1 tahun 2013 sebanyak 100 karung frekuensi 8 kali, safety stock 19 karung, reorder point 39 karung, total biaya Rp 2.499.363. Triwulan 2 tahun 2013 sebanyak 100 karung frekuensi 8 kali, safety stock 14 karung, reorder point 34 karung, total biaya Rp 2.533.428. Triwulan 3 tahun 2013 sebanyak 102 karung frekuensi 8 kali, safety stock 14 karung, reorder point 35 karung, total biaya Rp 2.562.375. Jumlah persediaan optimal dengan metode Economic Order Quantity (EOQ) gula pasir triwulan 4 tahun 2012 sebanyak 25 karung frekuensi 7 kali, safety stock 4 karung, reorder point 8 karung, TIC Rp 1.340.016. Triwulan 1 tahun 2013 sebanyak 23 karung frekuensi 8 kali, safety stock 3 karung, reorder point 8 karung, TIC Rp 1.337.374. Triwulan 2 tahun 2013 sebanyak 24 karung frekuensi 8 kali, safety stock 3 karung, reorder point 8 karung, TIC Rp 1.336.443. Triwulan 3 tahun 2013 sebanyak 25 karung frekuensi 8 kali, safety stock 6 karung, reorder point 11 karung, TIC Rp 1.381.075. Perhitungan persediaan tepung terigu dan gula pasir lebih optimal menggunakan metode Economic Order Quantity, dibanding dengan menggunakan metode konvensional. Salsa Bakery dianjurkan menggunakan metode Economic Order Quantity.   Kata Kunci: Economic Order Quantity (EOQ), Persediaan Bahan Baku, Reorder Point (ROP), Safety Stock (SS), Total Inventory Cost (TIC),   abstrack Optimal inventory within the company is one of the important factors in the performance of the company. This research is kuantiitatif, used to study in depth the application of Economic Order Quantity (EOQ) of raw materials in inventory control at Salsa Bakery Jepara. After using Economic Order Quantity (EOQ) method, results of the research were obtained the optimal amount of inventory, flour in quarter 4 in 2012 was 112 sacks, the frequency was 7 times, safety stock was 19 sacks, 39 sacks as a reorder point, TIC Rp 2.308.133. Quarter 1 in 2013 was 100 sacks; the frequency was 8 times, safety stock was 19 sacks, reorder point was 39 sacks, TIC Rp 2,499,363. Quarter 2 in 2013 was 100 sacks, the frequency was 8 times, safety stock was 14 sacks, 34 sacks as a reorder point, TIC Rp 2.533.428. Quarter 3 in 2013 was 102 sacks, the frequency was 8 times, safety stock was 14 sacks, 35 sacks as reorder point, TIC Rp 2.562.375. Optimal amount of inventory used the Economic Order Quantity (EOQ) sugar in quarter 4 in 2012 was 25 sacks, frequency was 7 times, safety stock was 4 sacks, 8 sacks was reorder point, TIC Rp 1.340.016. Quarter 1 in 2013 was 23 sacks, the frequency was 8 times, safety stock was 3 sacks, 8 sacks was reorder point, TIC Rp 1.337.374. Quarter 2 in 2013 was 24 sacks, the frequency was 8 times, safety stock was 3 sacks, 8 sacks was reorder point, TIC Rp 1.336.443. Quarter 3 in 2013 was 25 sacks, frequency was 8 times, safety stock was 6 sacks, 11 sacks was reorder point, TIC Rp 1.381.075. The calculation of inventory flour and sugar is more optimal if using Economic Order Quantity, than using conventional methods. Salsa Bakery recommended using Economic Order Quantity. Keywords: Economic Order Quantity (EOQ), Raw Material Inventory, Reorder Point (ROP), Safety Stock (SS), Total Inventory Cost (TIC),
Assessment of microarchitecture and crystal structure of hydroxyapatite in osteoporosis Noor, Zairin; Sumitro, Sutiman B; Hidayat, Mohammad; Rahim, Agus Hadian; Taufiq, Ahmad
Universa Medicina Vol 30, No 1 (2011)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18051/UnivMed.2011.v30.29-35

Abstract

Osteoporosis is characterized by lower bone mineral density (BMD) and microarchitectural degeneration, which tends to increase bone fragility and fracture risk. Bone microstructure depends on interactions between the mineral atoms, which may perform substitution or incorporation into bone crystals, and may dynamically take over the function of calcium or may become a complementary part. The mineral atoms may also become a composite in the hydroxyapatite crystals. The aim of this study was to find an association between the bone microstructure and hydoxyapatite crystal structure in osteoporosis, in comparison to normal bone. The subjects of this study were surgery patients at the Department of Orthopedics of Ulin General Hospital in Banjarmasin and other centers. Inclusion criteria consisted of the presence of fracture of trabecular bone, normal or osteoporotic BMD values, and no past history of chronic disease. Bone was obtained from fracture patients during surgery. The characteristics of the hydroxyapatite crystals were analyzed by X-ray diffraction (XRD) and the microarchitecture by scanning electron microscopy (SEM). SEM showed degeneration of the microarchitecture of osteoporotic bone, in comparison with normal bone. On XRD there was a peak of hydoxyapatite crystals only and no other crystal phases. Diffraction patterns showed a larger crystal size in osteoporotic bone as compared to normal bone, indicating higher porosity. It may be concluded that there is a difference in crystal size and morphologic distribution of hydoxyapatite in osteoporotic bone, determining bone microarchitecture.
Rancangan Sistem Informasi Manufaktur Terintegrasi untuk Mempercepat Waktu Pengiriman Produk Taufiq, Ahmad; Sayidah, Nur
Jurnal Widya Manajemen & Akuntansi Vol 5, No 3 (2005)
Publisher : Fakutas Ekonomi Unika Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4571.136 KB)

Abstract

PT Boma Bisma Indra (BBI) b manufacturing company with make-to-order (MTO) production strategy. This research designs manufacturing information system to make integration between proposal and product realization process by using database and information network digitally at BBI. BBI has a product delivery problem. Based on current reality tree (CRT) this problem is caused by tardy of information stream from one function to the other functions.
Pengaruh Motivasi Intrinsik Terhadap Kinerja Karyawan Dengan Kepuasan Kerja Dan Disiplin Kerja Sebagai Variabel Mediasi Pada Badan Pusat Statistik Kabupaten Magelang Taufiq, Ahmad
208-7721
Publisher : Jurnal Bisnis Teori & Implementasi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study proposed to examine and analyze the effect of intrinsic motivation on employee performance, with job satisfaction and work discipline as mediating variable.The object of this study is the office of the Statistics of Magelang regency, and the subject of this study are employees (civil servants) at the Office Statistics of Magelang Regency. The sampling technique in this study is saturated sample. All employees civil servants in BPS Magelang regency totaling 41 people are given a questionnaire.Data from the study were tested and analyzed using the Smart-PLS. The first conclusion is intrinsic motivation significantly influence job satisfaction, and a second conclusion is intrinsic motivation significantly influence the work discipline. The third conclusion is the intrinsic motivation significantly influence performance. The fourth conclusion is job satisfaction does not affect the work discipline, and the fifth conclusion is job satisfaction also has no impact on performance. The sixth conclusion is discipline significantly influence on the performance. The study also concluded that the discipline of work are variables that mediate the relationship between intrinsic motivation to the performance on  the Office Statistics of Magelang regency.
ZCO/CNT Composites Coated on Silver Substrates as Symmetric Supercapacitor and their Dielectrics Characterization at Various Frequencies Diantoro, Markus; Najihah, Lisa Ainun; Taufiq, Ahmad; Fuad, Abdulloh; Hidayat, Arif; S, Subakti
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): IJAP Volume 04 Issue 01 Year 2014
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1176

Abstract

Supercapacitor is a high power density energy storage device which complements the lack of batteries and conventional capacitors. One material which has a great potential in the manufacture of composite supercapacitor is spinel ZnCo2O4/carbon nano tube and abreviated in the later case as ZCO/CNT. Composition variations in ZCO/CNT composites is expected to the performance of supercapacitor especially the dielectric properties and specific capacitance. Inthis study the composite ZCO/CNT was made from raw materials of ZCO nano crystal which was prepared from previous research on which employing sonochemistry technic, carbon nano tube, and 1-methil 2 pyrolidine. A screen printing method was used in this experiment to deposite the composite on silver substrates. The separator in between of two identical composite structures was prepared from isotactic polypropylene. We used KOH 6 M which was implemented as electrolyte of the composites. Characterization of composite structures has been performed using X-RD, while the morphology characterization using SEM. It was found that the dielectric supercapacitor increase by increasing of mass fraction of ZCO in the composite. Thehighest dielectric constant is reached at 1.89 x 106 and the specific capacitance of 81 F/g for 3:1mass ratio of ZCO : CNT at 100 Hz.
9. KEKERASAN DALAM RUMAH TANGGA (KDRT) DALAM PERSPEKTIF NEGARA, BUDAYA DAN AGAMA Taufiq, Ahmad
FORUM Vol 36, No 1 (2008) : Memahami Tayangan Kekerasan Di Televisi
Publisher : Faculty of Social and Political Sciences Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4241.649 KB)

Abstract

Violence in the private area consist of physical violence, psychological violence, sexual violence and out of family. Each violence cause impact especially phychological impact of victim. The implementation of UU No. 23 tahun 2004 about elimination of violence in private area has not been effectively done, because there are still many violence of private area cases happened every year. This problem need serious concern and coordination of government and others element involved. The solution to prevent woman and children from this violence are by socializing the act, by promoting idea against patriarchy culture and by given the right interpretation and perception about the position women in Islam.
1. DINAMIKA KEMISKINAN DI ERA PEMERINTAHAN SUSILO BAMBANG YUDHOYONO – YUSUF KALLA. Taufiq, Ahmad
FORUM Vol 35, No 2 (2007) : Kinerja Pemerintah Yang Dipertanyakan
Publisher : Faculty of Social and Political Sciences Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2460.38 KB)

Abstract

Many policies has been implemented in poverty alleviation by SBY-Kalla Administration. The policy are not only implemented in various main programs, but also supported by big and significant budget. Unfortunately, from 2005-2006 periods there is a tendency of increasing poverty, from 15,97% (2005) to 17,75% (2006). The main reasons are those administration’s programs are based on invalid data, not supported by macro economic policy, charitative in nature, and politically-orinted.
COMBINATION OF COPRECIPITATION AND SONOCHEMICAL METHODS IN SYNTHESIZING SPINEL HAUSMANNITE NANOMATERIAL Hidayat, Nurul; Taufiq, Ahmad; Sunaryono, Sunaryono; Hidayat, Samsul; Heriyanto, Heriyanto; Prayekti, Era Budi
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol 8, No 1 (2018)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v8n1.p1-9

Abstract

As it has been widely known that the spectacular characteristics of nanomaterials are strongly dependent on their particle size, crystal structure, and molecular arrangement. The fine structure formation of nanomaterials is inevitable in an attempt of optimizing their promising applications in various fields. One of the notable nanomaterials up to now is hausmannite or Mn3O4. This paper presents a combination of coprecipitation and sonochemical routes in a concurrent way to produce spinel-structured hausmannite nanomaterials. The pH was varied during the synthesis at values of 9, 10, 11, 11.5, and 12. The crystal structure properties were evaluated by X-ray diffractometry (XRD) with the diffraction angle range of 15° - 80°. The functional groups were investigated by Fourier transform infrared (FTIR) spectrometry having wavenumber from 400 to 4000 cm-1. In this study, pH 10 was found to be the best synthesis parameter in producing Mn3O4. Both XRD and FTIR data analyses have agreed on the formation of spinel hausmannite nanomaterials.
Co-Authors Abdul Kariem Arof Achmad Slamet Adetya Dewi Wardani Adim Firmansah Agus Hadian Rahim Ahmad Munjin Nasih Anita Listanti Annisa Ulfa Yana Ari Gunawan Arif Hidayat Arif Hidayat Aripriharta Aripriharta Aulia Siska Yuliana Ayu Lingga Ratna Sari Baskoro Tedjo, Astri Anindya Sari, Hanson Endra Kusuma, Darminto Darminto dea aprilaga hani, dea aprilaga Dian Rafiah Dibyaratna Syarqiy Dori Jasrianto, Dori dzauqulazali noor mustika sari, dzauqulazali noor Endang Purwaningsih Era Budi Prayekti Fitriyah . Fuad, Abdulloh Futri Yuliana Futri Yuliana H N Ulya Hadi Suwono Hendra Susanto Heriyanto Heriyanto Herlin Pujiarti Herlina Mulyastuti Ida Rohmah Susiani Ida Rohmah Susiani Ikhwan Najmi Imam Munandar Ina Yuliana Indra Kurniawan Islam, Syaiful Islamy, Athoillah Khairul Mahfud Kormil Saputra Kurnia Galuh Candra Kirana Kusnunnahari Kusuma Wardhani Mas'udah Kusuma Wardhani Mas'udah Lia Yuliati Lusia Astrika Lya Rizka Herawati M Tommy Hasan Abadi Markus Diantoro Mitra Istiar Wardhana, Mitra Istiar Moch Sholeh Moh. Asror Yusuf Mohammad Hidayat Muh. Arafik Muhammad Ikhwan Najmi Munzil Muslihati Nadiya Miftachul Chusna Naif Fuhaid Najihah, Lisa Ainun Nandang Mufti Nur Amirah Mat Nor Nur Diana Rosyidah Nur Mega Aris Saputra Nur Millaty Abadiah Nur Sayidah Nurdin Nurdin Nurida Finahari Nurul Hidayat Nurul Hidayat Parno Parno Ponimin Ponimin Priyatno Harsasto Ratna Putri Aulia Reni Periyanti Rina Martini Rudi ono S, Subakti Samsul Hidayat Samsul Hidayat Sandhi Setya Praptama Satia Nur Maharani Sentot Kusairi Septianingrum, Arum Setiawan, Tomi Uki Shahan Shah Sopingi Sopingi, Sopingi ST. Ulfawanti Intan Subadra Sulistyowati Sulistyowati Sunaryono Sunaryono Sunaryono, Sunaryono Supriyono Koes Handayanto Sutiman B. Sumitro Sutopo Sutopo Suwanto Adhi Thathit Suprayogi Titik Istirohah Tsania Nur Diyana Von Dasa, Stephanus Piter Wahyudha Tri Setiyoaji Wahyudin Wahyudin Welhemina Kameo Widji Indahing Tyas Widya Elyani Winasishadi, Ahmad Nuril Wiwik Widayati Yuanita Amalia Hariyanto Yuda Prima Hardianto Yudi Bijak Laksono Yunan Amza Muhammad Yundari, Yundari ZAINUL ARIFIN IMAM SUPARDI Zairin Noor