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All Journal Jurnal Sains dan Seni ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Teknik Kimia Bulletin of Chemical Reaction Engineering & Catalysis Program Kreativitas Mahasiswa - Teknologi Dinar: Jurnal Ekonomi dan Keuangan Islam PROSIDING SEMINAR KIMIA Indonesian Journal of Chemical Science Jurnal Kimia Terapan Indonesia Indonesian Journal of Chemistry Akta Kimia Indonesia Prosiding Seminar Nasional Sains dan Teknologi Terapan IJIEEB : International Journal of Integrated Education, Engineering and Business Proceeding of World Conference Portal: Jurnal Teknik Sipil Journal of Tropical Marine Science Indonesian Journal of Electrical Engineering and Computer Science Molluca Journal of Chemistry Education (MJoCE) Narotama Jurnal Teknik Sipil International Journal of Engineering, Science and Information Technology Halal Research Journal Jurnal Konseling Pendidikan Islam Bulletin of Chemical Reaction Engineering & Catalysis
Fredy Kurniawan
Institut Teknologi Sepuluh Nopember
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Transportation Other

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INNOVATION OF TECHNOLOGY TO PRODUCE HIGH QUALITY SALT IN MADEGAN-MADURA Dharmayanti, Arynta; Ridha, Fuji; Wijiyanti, Rika; Rachmat, Arif; Nusbangga, Dipta; Kurniawan, Fredy
Program Kreativitas Mahasiswa - Teknologi PKM-T 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (750.085 KB)

Abstract

Salt farmers have a problem about the low selling price of salt in common, which is Rp 400,-/kg for B quality salt and Rp 550,-/kg for quality salt A. The cause of the low selling price is because the yield of salt mixed impurities from mineral in soil. In addition, other barriers experienced by the salt farmers are can not operate during the rainy season. It is caused due to the use of the conventional method is not maximized so it produces salt with low quality and quantity. These conditions have been experienced by salt farmers in the Madegan village. Therefore the purpose of the PKM-T is to make the tool named “Talang Cerdas” producing high quality salt with crystallization method using stainless steel gutters and lenses as a focus rays. The methods used are literature studies and field observations on a group of salt farmers in Madegan village as a partners of salt producers using “Talang Cerdas”. Then, we made the design and manufacture of equipment. “Talang Cerdas” has three parts. The first part is tank and pump as a container and pump sea water into it. The second part is the gutters and supporting tools as a medium of salt farmers. The third part is the lens for the convergence process. After that, we did test to the tool and the salt result, and also socialiszation to the salt farmers. “Talang Cerdas”produces a greater salt that is 2,67 kg/m2 in 14 days which operates for 7 hours per day. Based on the chemical test, the salt has low water content which is 0,733%, the levels of NaCl, Mg, Ca and SO4 respectively 95,73%, 0,05%, 0,08% and 0,17%.Keywords : Salt, stainless steel, crystallization, saltpond
PEMETAAN POTENSI WISATA HALAL DI KABUPATEN SUMENEP, JAWA TIMUR, INDONESIA Kurniawan, Fredy; Soeprijanto, Adi; Guntur, Harus Laksana; Wardhana, Mahendra; Abadi, Imam; -, Sayyida
Dinar Jurnal Ekonomi dan Keuangan Islam Vol 5, No 2: Agustus 2018
Publisher : Dinar Jurnal Ekonomi dan Keuangan Islam

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Abstract

Tourism activities are one thing for supporting regions and the countrys economic development, through foreign exchange, tax revenues, and other levies. Tourism activities in one area can increase employment, accelerate the construction of facilities and infrastructure. Tourism also be able to introduce the local production goods for local and foreign tourists. Recently, the Muslim community is the largest community in the world and Indonesia is one of the countries with the most Muslim population. Seeing this opportunity, the Indonesian government in 2012 began for introducing halal tourism in Indonesia. Sumenep, East Java, Indonesia has a variety of tourism potential that can be developed into halal tourism. This study has been mapped all potential for halal tourism in Sumenep, East Java, Indonesia. The potential of halal tourism in Sumenep which has been successfully mapped includes object of food, beach tourism, traditional weapon (keris) tours, centers of batik Sumenep, religious tours, historical tours and natural tours. Hotel and hostelry was also available so that the tourist can plan their vacation in the desire time. Transportation between tourist attractions can also be accessed easily. All tourism objects are includes the criteria of Halal tourism. It can be summarized as Sumenep Halal tour package. This potential was also supported by the religious culture of Sumenep people. This mapping will make it easier for Muslim tourists in particular to access halal tourism in Sumenep, East Java, Indonesia.
Pengaruh Reduktor Zink pada Sintesis Graphene terhadap Performa PdAu/Graphene sebagai Material Elektrokatalis DMFC Vietanti, Frizka; Susanti, Diah; Purwaningsih, Hariyati; Kurniawan, Fredy
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2019: Menuju Penerapan Teknologi Terbarukan pada Industri 4.0: Perubahan Industri dan Transformasi P
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Sel bahan bakar adalah peralatan elektrokimia yang mengubah energi kimia dalam bahan bakar secara langsung menjadi energi listrik. Direct Methanol Fuel Cell (DMFC) merupakan jenis sel bahan bakar yang menarik perhatian karena menghasilkan densitas energi yang tinggi dan menggunakan jenis bahan bakar cair yaitu metanol. Saat ini katalis berbasis Palladium (Pd) yang didepositkan pada elektroda berbasis karbon memainkan peranan penting untuk menggantikan Platina (Pt)/C karena cadangan terbatas, harga mahal, dan ketidakstabilan dalam operasi sebagai material elektrokatalis DMFC. Graphene sebagai material baru untuk elektroda DMFC telah terbukti dapat meningkatkan performa DMFC. Faktor keberhasilan reduksi graphene oxide menjadi graphene dipengaruhi oleh reduktor zink (Zn). Dalam penelitian ini diberikan variasi massa reduktor Zn senilai 0.8, 1.6, dan 2.4 gram. Metode sputtering diaplikasikan untuk mendepositkan nanopartikel PdAu pada graphene. Dari hasil pengujian scanning electron microscopy (SEM) dan X-ray diffraction (XRD), reduktor Zn senilai 1.6 gram menunjukkan performa terbaik. Pada pengujian elektrokimia dengan menggunakan cyclic voltammetry (CV) diperoleh densitas arus sebesar 80mA/g dan potensial onset sebesar -0.58 V vs. Ag/AgCl.
Study of The Correlation Between Contact Angle Values with The Polarity of Liquids Syahara, Muhammad Alwi; Kurniawan, Fredy; Anggriawan, Wahyu
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (186.763 KB) | DOI: 10.12962/j23546026.y2015i1.1176

Abstract

Contact angle measurement is a technique which can be used to determine the surface properties of a substance and observe the interaction of surfaces. When polar liquid dropped on a non-polar solid, it will make an interaction that can observed from the contact angle. In simple way, the different polarity of the solid and the liquid sample will affect to the contact angle obtained. In this work the value of contact angle will be correlated to the polarity of the sample. The results showed that the plot between polarity parameter with contact angle on polytetrafluoroethylene substrat has a correlation which formed a sigmoidal curve with R2=0,954. It means the polarity of liquids can be determined by the contact angle values.
Fiber Optic Adaptive Probe as a Cuvette Substitution for UV-Vis Spectrophotometer (Genesis 10S) Kurniawan, Fredy; Suharmanto, Edi
IPTEK The Journal for Technology and Science Vol 25, No 2 (2014)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v25i2.536

Abstract

Fiber optic adaptive probe UV-Vis for Genesis 10S has been fabricated to substitute cuvette for real time analysis. Most of standard spectrophotometers UV-Vis (the common type) use cuvette to place sample which is being analyzed. The light pass through the sample in the cuvette to detector then the intensity of the absorption of the solution is measured. Most of the cuvette system requires to transferring sample solution to cuvette from its original vessel, so the real time analysis cannot be conducted. The probe with special design using fiber optic cable FT-Au tonics 420-10 has been made to substitute the cuvette system. The light from the source moved inside fiber optic cable, which has been cut in the middle of the cable (the sample can passes through at this gap), to the detector. The end (entrance and exit) of the fiber optic was designed so that it fit to the compartment of the Genesis 10S spectrophotometer without any modification from the standard instrument condition. The spectrum results from the probe in varies gap, in the range 0.2 – 1 cm, was observed. The gap in the middle of the fiber optic was equal to the length of the pathway in the cuvette system. Rhoda mine B was used as the sample with variation concentration 4.175 × 10-5 M, 3.34 × 10-5 M, 2.5 × 10-5 M, and 1.67 × 10-5 M. The spectrum result of adaptive fiber optic probe was compared to the spectrum of standard cuvette system. The optimum result was provided using 0.2 cm gap. The maximum wavelength absorbance of adaptive fiber optic probe was at 533 nm which similar to the cuvette system
Vibration Spectroscopy Potential for Beef and Pork Determination Syahputra, Muhammad Yudha; Juniawan, Alvin; Suprapto, Suprapto; Kurniawan, Fredy
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11123

Abstract

Meat is one of the most foodstuff consumed. The increasing consumption of meat had led some traders to falsify the identity of meat for gaining profit. The meat adulteration case that often occurs is substituting the beef with pork. This adulteration case is very detrimental to consumers, therefore a method to identify the type of meat sold is very necessary. The vibration spectroscopy method, Fourier Transform Infra Red (FTIR), had been developed to analyze the type of beef and pork. The FTIR measurement was carried out with cut raw meat samples without further preparation. The Data obtained from the measurement are infra-red spectrum from beef and pork from 4000-500 cm-1 wavenumber and then the data was analyzed with Principle Component Analysis (PCA) statiscticall method. Projection result with PCA obtained data reduction that can represent all data generated from measurements shown through the Principle Component 1 and Principle Component 2 regions. Based on those projection, beef and pork profile area can be classified properly.
DETEKSI KAPSUL GELATIN IMUNITAS ANTICOVID19 DENGAN SENSOR QUARTZ CRYSTAL MICROBALANCE (QCM) YANG JUAL DI PASAR X KOTA SURABAYA ., Syukrianto; ., Umarudin; Madurani, Kartika Anoraga; Kurniawan, Fredy
Jurnal Teknik Kimia Vol 16, No 1 (2021): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v16i1.2844

Abstract

Tujuan penelitian ini adalah untuk mengetahui kandungan porcine (babi) atau bovine (sapi) pada kapsul gelatin imunitas anticovi19 yang dijual di Pasar X Surabaya Utara. Metode yang digunakan untuk membedakan gelatin babi dan gelatin sapi adalah dengan alat Quartz crystal microbalance (QCM). Pada penelitian ini pendeteksian kapsul gelatin imunitas anticovid19 dilakukan dengan alat QCM. Metode penelitian ini dilakukan secara true eksperimental, dan pengambilan sampel dengan teknik quota sebesar 3 gram pada masing-masing sampel dengan merk yang berbeda. Hasil penelitian yang dilakukan pada 4 sampel dengan merk berbeda yang berasal dari pasar X daerah Surabaya Utara, menunjukkan hasil pendeteksian sebanyak 2 sampel dengan hasil negatif (-) dan 2 sampel dengan hasil positif (-), artinya sampel negatif mengandung gelatin sapi (bovine) dan sampel positif mengandung babi (porcine). Pada sampel kapsul gelatin imunitas yang mengandung gelatin sapi ditandai dengan penurunan frekuensi, sedangkan sampel kapsul gelatin imunitas yang mengandung gelatin babi ditandai dengan kenaikan frekuensi. DOI : https://doi.org/10.33005/jurnal_tekkim.v16i1.2844
Pemetaan Potensi Wisata Halal Di Kabupaten Sumenep, Jawa Timur, Indonesia Kurniawan, Fredy; Soeprijanto, Adi; Guntur, Harus Laksana; Wardhana, Mahendra; Abadi, Imam; Sayyida, Sayyida
Dinar : Jurnal Ekonomi dan Keuangan Islam Vol 5, No 2: Agustus 2018
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/dinar.v5i2.5002

Abstract

Kegiatan pariwisata adalah satu hal untuk mendukung daerah dan pembangunan ekonomi negara, melalui valuta asing, pendapatan pajak, dan pungutan lainnya. Indonesia adalah salah satu negara dengan populasi Muslim terbanyak. Melihat peluang ini, pemerintah Indonesia pada 2012 mulai memperkenalkan pariwisata halal di Indonesia. Sumenep, Jawa Timur, Indonesia memiliki beragam potensi wisata yang dapat dikembangkan menjadi pariwisata halal.Fokus penelitian ini adalah bagaimana memetakan potensi pariwisata Halal di Sumenep Metode penelitian ini adalah kualitatif dengan teknikpengumpulan datanya observasi terhadap berbagai destinasi wisata dan pelaku-pelaku usaha di bidang pariwisata Kabupaten Sumenep.Hasil penelitian ini telah adalah konsep pemetaan potensi wisata halal di Sumenep, Jawa Timur, Indonesia. Potensi wisata halal di Sumenep yang telah berhasil dipetakan meliputi objek makanan, wisata pantai, wisata senjata tradisional (keris), pusat batik Sumenep, wisata religi, wisata sejarah dan wisata alam. Hotel dan penginapan juga tersedia sehingga wisatawan dapat merencanakan liburan mereka di waktu yang diinginkan. Transportasi antar tempat wisata juga dapat diakses dengan mudah. Semua objek wisata termasuk kriteria pariwisata halal. Ini dapat diringkas sebagai paket wisata Halal Sumenep. Potensi ini juga didukung oleh budaya keagamaan masyarakat Sumenep. Dengan pemetaan ini akan memudahkan para wisatawan Muslim khususnya untuk mengakses pariwisata halal di Sumenep, Jawa Timur, Indonesia.
Porcine Detection on Anti-Covid 19 Immunity Gelatin Capsules Sold at Market X in North Surabaya Using Quartz Crystal Microbalance (QCM) Sensors Syukrianto, Syukrianto; Umarudin, Umarudin; Madurani, Kartika Anoraga; Kurniawan, Fredy
Indonesian Journal of Chemical Science Vol 10 No 3 (2021)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v10i3.50456

Abstract

Immune gelatin capsules, which have not been fully indicated on the packaging, need to be investigated porcine or bovine using a Quartz crystal microbalance (QCM) tool. The advantages of the QCM tool are sensitivity to the crystal oscillation frequency at a specific temperature, humidity, pressure, speed, and vibration, which will make this piezoelectric oscillator used as a sensor with a high accuracy level. The purpose of this study was to determine the content of porcine (pork) or bovine (beef) in anticovi19 immunity gelatin capsules sold at market X, North Surabaya. The method used to distinguish pork gelatin and beef gelatin is a Quartz crystal microbalance (QCM) tool. In this study, the detection of anti-covid19 immunity gelatin capsules was carried out using a QCM tool. This research method was carried out in a factual experimental manner, and sampling with the quota technique was 3 grams for each sample with a different brand. The results of research conducted on four samples with other brands originating from the market X area of North Surabaya showed the detection results of 2 samples with adverse effects (-), and two samples with positive results (-), meaning that the negative samples contained beef gelatin (bovine) and the positive sample contains pork (porcine). A decrease in frequency characterized the sample of immunity gelatin capsules containing bovine gelatin. In contrast, the sample of immunity gelatin capsules containing porcine gelatin was characterized by increased frequency.
Analysis of the Causes of Delays in Construction Projects at the XYZ Resort Bali Project Ikhsan Setiawan; Rooslan Edy Santosa; Fredy Kurniawan; Nyoman Agus Sandika Purnaman
Journal of World Conference (JWC) Vol. 3 No. 4 (2021): July 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

A construction project is a series of interrelated activities to achieve certain objectives (building or construction) within a certain time, cost and quality limitation. Delay in a project is a situation where the project cannot be completed within the planned time. The construction project at the XYZ Resort Bali project, in construction, occurred delays due to disputes. The disputes are caused by several factors between stakeholders, where each stakeholder has various and different problems. The purpose of this study is to identify and analyze the causative factors that contribute to delays in construction projects at the XYZ Resort Bali Project and provide suggestions or determine mitigation measures to overcome them. The method used is a quantitative approach in the form of literature studies, data collection through surveys, data analysis and conclusions. The survey questionnaire was designed based on the factors identified from previous research by determining as many as 6 aspects of the study with 45 types of causes or factors that contributed to project delays. Data analysis was carried out quantitatively descriptive of the delay factor variables from the questionnaire results. The questionnaire data was tested for validity and reliability, then analyzed using the fishbone diagram approach and the House of Risk method to determine the main factors that contribute to project delays and determine mitigation measures to overcome delays in project completion.
Co-Authors ., Syukrianto ., Umarudin Abdullah Aman Damai Adi Prawito Adi Soeprijanto Alvin Juniawan Anang Maryanto Anggriawan, Wahyu Ari Nugroho Arif Rachmat, Arif Arynta Dharmayanti, Arynta Atik Rohmana Maftuhatul Fuad Baginda Zulkarnain Bagus, Muhammad Bahrul Ulum Dennis Farina Nury Diah Ayu Restuti Wulandari Diah Susanti Dipta Nusbangga, Dipta Djarot Sugiarso Endang Tri Wahyuni Endang Tri Wahyuni Erna Rochana Estu Yoga Elmi Gesa Febri Hadi Fitriyana Fitriyana Fransisca Bangun, Yulia Frizka Vietanti Fuji Ridha, Fuji Galuh Tiara Dewi HANGGARA, ANGGY YOGA Hariyati Purwaningsih Harmami Harmami Harus Laksana Guntur Hatta, Agus Muhamad Hendro Juwono Hendro Juwono Hendro Sutowijoyo Ika Puspita, Ika Ikhsan Setiawan Imam Abadi Isa, Illyas Md Ismail Azizi Ita Ulfin Julistyana Tistogondo Karlinda Karlinda Kartika A. Madurani Kaskoyo, Hari Koespiadi Kolo, Maria Magdalena Lia Marisca Permatasari Lourentia Candle Lutfi Andre Yahya Madurani, Kartika Anoraga Mahendra Wardhana, Mahendra Mega Vania Misbah Misbah Mochammad Zaki Nasrulloh Mohammad Teguh Hermanto Muhammad Alwi Syahara, Muhammad Alwi Muhammad Rivai NUR EFENDI Nyoman Agus Sandika Purnaman Pemal Kabogi Praditya Bagaskara Qonitah Fardiyah Rahadian Zainul Rahmi Rahmi Ramadhana Sangyang Ady Regina Tutik Padmaningrum Rika Wijiyanti, Rika Romadhona, Syahrur Rooslan Edy Santosa Sayyida Sayyida Sekartedjo Koentjoro, Sekartedjo Selvi Marcellia Setyadi Laksono Bahar Silvya Anggraini Sri Wiwoho Mudjanarko, Sri Wiwoho Suharmanto, Edi Sunarto Sunarto Suprapto Suprapto Suprapto, Suprapto Sutarno Sutarno Sutarno Sutarno Suyanta Suyanta Syahputra, Muhammad Yudha Syukrianto, Syukrianto Taslim Ersam Tri Paus Hasiholan Hutapea, Tri Paus Hasiholan Tri Widjaja Triyono Triyono Triyono Triyono Umarudin, Umarudin Vietanti, Frizka Wahyu Anggriawan Yunita Triana Yunita Triana Zulkarnain Zulkarnain