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KOMPOR BIOMASSA MENGGUNAKAN BAHAN BAKAR KAYU CENGKEH (SYZYGIUM AROMATICUM (L.) MERR) SEBAGAI SUMBER ENERGI Wakur, Roni; Rawung, Handry; Molenaar, Robert; Ludong, Daniel P.
COCOS Vol 6, No 13 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i13.8665

Abstract

ABSTRACT Penelitian ini bertujuan untuk merancang dan membuat kompor biomassa, serta mengkaji proses pembakaran dengan bahan bakar kayu (cengkeh) dan pindah panas pada kompor biomassa. Analisis dilakukan terhadap suhu nyala api, suhu dinding kompor,suhu dinding luar panci, suhu dinding dalam panci, suhu air dan lamanya pemasakan air. Perhitungan yang dilakukan meliputi energi panas yang terkandung dalam bahan bakar yang digunakan dan energi panas yang digunakan, serta efisiensi pemanasan air. Penelitian ini dilakukan awal bulan Juli sampai awal September 2014 di Bengkel Keteknikan Fakultas Pertanian Universitas Sam Ratulangi Manado. Kajian proses pembakaran ini menggunakan 3 perlakuan yang dianggap taraf yang diambil dari berat bahan bakar yang digunakan yaitu jumlah bahan bakar 500 g, 750 g,  dan 1000 g. Data hasil penelitian dicatat dan dihitung kemudian disusun dalam bentuk tabelaris lalu digambarkan dalam bentuk grafik.  Analisis yang digunakan dalam penelitian ini ialah deskriptif. Hasil penelitian ini menunjukkan bahwa kompor biomassa yang mengunakan bahan bakar kayu sebagai sumber energi dapat memenuhi kebutuhan kelangsungan hidup rumah tangga dalam masak-memasak.  Kata Kunci: Kompor biomassa, bahan bakar kayu cengkeh, efisiensi pemanasan air
MODEL SISTEM PAKAR DALAM MENGIDENTIFIKASI PERMASALAHAN PADA JARINGAN IRIGASI PERTANIAN DI BENDUNG TALAWAAN Koloay, Richard A.V.; Rumambi, David; Molenaar, Robert
COCOS Vol 1, No 3 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i3.20871

Abstract

ABSTRACT  This study aims to obtain information about the problems that occur in irrigation networks at the right part of Talawaan dam and produce a computer application model as an expert system. It is hoped that this expert system application can be useful to provide information about the problems that occur in the irrigation network in Talawaan dam, especially on right Talawaan irrigation networks and can provide solution of the problem through an expert system application that can be accessed by each user. This research was conducted in the Technical Laboratory of Agricultural Faculty of Agriculture Technology Department of UNSRAT and in Talawaan dam, Talawaan Subdistrict, North Minahasa Regency, North Sulawesi Province, and divided into two stages: irrigation network data collection and expert system application development.  Data collection on right Talawaan dam is done by calculating inflow water discharge and outflow water discharge and evaporation on primary, secondary and tertiary channel then documentation on problems that occur on irrigation channel. There is a water loss of 0.187 m3 / sec on the primary channel, 0.213 m3 / sec of water loss in secondary channels, and water loss of 0.074 m3 / sec on tertiary channels. Factors that cause water loss include the problem of damage to irrigation channels, garbage accumulation, illegal water taking, and silting of channels by mud. With this expert system, users can get information on problems that occur on irrigation channels and can consult to find solutions to the problem.  Keywords: Irrigation Network and Expert System
ANALISIS ENERGI DALAM PROSES PENGOLAHAN KOPRA RAKYAT Wohon, Gerson; Tooy, Dedie; Molenaar, Robert
COCOS Vol 1, No 1 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.22599

Abstract

Abstract  This study aims to determine the energy sources at the stage of the copra processing commonly made by the people, to measure the amount of energy used at each stage of the people's copra processing process, to calculate the total energy used eachs of was obtained by means of energy analysis surveys. The resulting data consists of primary and secondary data.  The total input energy in the process of people's copra is more than twice the amount of output energy contained in the copra produced (870,840 kcal). This condition indicates the need to improve the efficiency of the copra processing process in energy utilization.. Keywords: Energy of coconut fiber, human energy, livestock energy.
KAJIAN ISOTERMI SORPSI AIR DAN FRAKSI AIR TERIKAT KUE PIA KACANG HIJAU ASAL KOTA GORONTALO [Study on Moisture Sorption Isotherm and Bound Water Fractions of Green Beans Taste of Pia Cake from Gorontalo] Jamaluddin, Jamaluddin; Molenaar, Robert; Tooy, Dedie
Jurnal Ilmu dan Teknologi Pangan Vol 2, No 1 (2014)
Publisher : Pascasarjana Unsrat

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

Abstract

The aims of this work were to study the moisture sorption isotherm and find a suitable mathematical model of sorption isotherm of green beans of  Pia cake from Gorontalo. The sortion isotherm curve was determined by conditioning the Pia cake at various water activities (aw) using saturated salt solution at 30 0C. Data of Pia cake water content at equilibrium were then plotted against water activity. The study found that sorption isotherm of green beanstaste Pia cake were sigmoidal in shape and the mathematical model of Hasley was found to be the most appropriate in predicting the sorption isotherm of green beans taste Pia cake tested. Limits of primary, secondary, and tertiary bound water content were found for the green beans taste Pia as 3,69% db (aw = 0,12), 3,69% db – 7,84% db (aw= 0,12 - 0,42), and 7,84% db – 13,30% db(aw= 0,42 - 1)respectively Key words:   Pia cake,  moisture equilibrium content, mathematicalmodelsof sorption isotherm, dan bound water fractions.
MODIFIKASI TEPUNG PISANG “MULU BEBE” (Musa acuminata) INDIGENOUS HALMAHERA UTARA SEBAGAI SUMBER PANGAN PREBIOTIK Lumba, Ronal; Djarkasi, Gregoria; Molenaar, Robert
Jurnal Teknologi Pertanian (Agricultural Technology Journal Vol 8, No 1 (2017): Jurnal Teknologi Pertanian (Teta)
Publisher : Fakultas Pertanian, Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jteta.8.1.2017.16347

Abstract

"Mulu bebe" plantain (Musa acuminata) is a potential tropical fruit commodity in Indonesia, especially in the North Halmahera area where it can be used as part of food diversification. It is orange in color and no study has been done so far regarding physicochemical properties of starch and its resistant starch. This research was aimed to study the physical properties of “Mulu bebe” plantain flour modified through a spontaneous fermentation process combined with heating and cooling to increase the resistant starch content for use as a prebiotic food source. This study was designed as a completely randomized experiment (CRD) having 2 factors and three replications. The first factor is the spontaneous fermentation time consist of 0, 12, 24 and 36 hours and the second factor is without (0 minutes) and with 45 minutes heating. The result of length of fermentation time showed the lactic acid bacteria grow well during 36 hours fermentation, reaching 8,6 log cfu/ ml. Spontaneous fermentation process alone aid no effect on the physicochemical properties of flour produced, but the presence of heating and cooling process was significantly modified the physicochemical properties. Through the process of 36 hours fermentation, followed by heating at a temperature of 121oC for 45 minutes and cooling at 4 °C for 24 hours produced resistant starch content of 48.53% and in vitro starch digestibility 21,94%.
PEMBUATAN APLIKASI E-COMMERCE PRODUK PERTANIAN BERBASIS CONTENT MANAGEMENT SYSTEM (CMS) Pendong, Lexi M.; Molenaar, Robert; Wullur, Hildy; Pinatik, Herry F.
COCOS Vol 6, No 11 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i11.8457

Abstract

ABSTRACT With the current technology developments have made changes in all areas, including trade. Various activities can be done easily and quickly, including buying and selling activities. E- commerce is one of the technology in helping the buying and selling activities. Wide range of products are being sold using e-commerce such as clothes, shoes, bags, food up to ticket. The development of e-commerce is also changing so rapidly, the current CMS (Content Management System) began to be considered to be used to build e-commerce because it is easier and faster in providing information.  North Sulawesi is one area that is famous for its agricultural products such as coconut, cloves and processed products such as palm sugar, coconut oil, and others. Making the application of e-commerce is expected to help provide information related to agricultural products as well as simpifiying the buying and selling activities.  This study aims to create a CMS-based web applications and financial transactions (e-commerce). This research is expected to help the community and students in accessing and providing information related to agricultural products rapidly and extensively, as well as simplifying the buying and selling process via the Internet.
APLIKASI PEMBELAJARAN PRAKTIS ALAT dan MESIN PERTANIAN BERBASISANDROID Pinontoan, Andreas R.; Molenaar, Robert; Wullur, Hildy
COCOS Vol 6, No 11 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i11.8396

Abstract

ABSTRACT Information on agricultural machinery and equipment is required for the development of agricultural technology in Indonesia. Although Indonesia is known as an agricultural country, its agricultural technology is considered less developed compared to many other non-agricultural countries. One reason behind this is the dissemination of information regarding agricultural machinery and equipment still believed asunstructured and fragmented. Advancement in information and communication technology has made easiness for people in accessing information. Android operating system is gaining more and more popularity and its userin Indonesia is growingfast. This research aims to develop an Android based practical learning application on agricultural machinery and equipment. This research was carried out during the month of April 2015 to June 2015 and the resulted application was successfully installed in Android as a 1.8 Mb APK file format. The application was tested on CPU emulator and Andromax smartphone followed by a survey to 16 respondents using questionnaire having 10 questions in it (5 questions for application and 5 other questions for content of application). The respondents, who marked each question with 1=very disagree; 2=disagree; 3=neutral; 4=agree; 5=very agree, consist of 10 university students, 3 university lecturers, 1 representing farmer, 1 consultant in agricultural machinery and equipment, and 1 representingcommon people. Results of the test conclude that this Android application can be implemented as information media to improve awareness of public and university students regarding agricultural machinery and equipment in a quicker and a more efficient way. The application can also help disseminating information regarding agricultural machinery and equipment in a more variety way in order to support the development of agricultural technology in Indonesia.
SISTEM INFORMASI BERBASIS WEBGIS JARINGAN IRIGASI PERSAWAHAN POPONTOLEN KECAMATAN TUMPAAN KABUPATEN MINAHASA SELATAN ., Benny; Molenaar, Robert; Pakasi, Sandra E.
COCOS Vol 1, No 1 (2020)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.27294

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ABSTRACT This study aims to create an application of geospatial information on irrigation networks in Popontolen Village that supports the online monitoring and maintenance of irrigation networks based on WebGIS. This information system can be built using computers with low specifications and is supported by easy and free software (open source). This WebGIS design utilizes the framework of QGIS and the Bootstrap framework for the overall appearance of WebGIS, both of which have a programming language for displaying WebGIS. By utilizing free hosting services that are available, this WebGIS prototype can be accessed by internet users by typing the URL in the address bar https://sijaripopontolen.000webhostapp.com/index.html. And can be displayed on various devices both desktop and mobile-based. Keywords : Irrigation Networks,
ANALISIS MUTU DAN EKONOMI PENERAPAN PENGEMASAN VAKUM BAWANG DAUN POTONGAN (Allium fistulosum L.) SELAMA PENYIMPANAN Mikael, Florensi Wahyuni; Molenaar, Robert; Lengkey, Lady C. Ch. E.
Jurnal Teknologi Pertanian (Agricultural Technology Journal Vol 11, No 2 (2020): Jurnal Teknologi Pertanian (Agricultural Technology Journal)
Publisher : Fakultas Pertanian, Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jteta.11.2.2020.31487

Abstract

AbstractThis study aimed to analyze leeks packaging and without packaging during storage, and to analyze economical packaging and knowing the number of breakeven points obtained. This study uses an experimental method, and descriptive analysis of data consisting of 2 treatments and 3 replications, namely scallions which are vacuum packed, and leeks without packaging that are stored in a refrigerator with a temperature of 5-10˚C.From the results of research on quality analysis of changes in weight, color and texture showed that the vacuum packaged onions at a storage temperature of 5˚C – 10˚C gave the best results over a 14-day shelf life compared to unpacked leeks which only lasted for a shelf life of 6 days. Weight reduction occurred in the treatment without packaging by 44%. The total fixed cost is Rp.219,625 /Year, the total variable cost is Rp.5,519 per package, with a yearly production of 24,300 packs /Year, to obtain the selling price of vacuum packaging leeks of Rp.6,080 per package, and the break-even analysis results in get is 392 packaging /Year.Keywords : Leeks, Vacuum Packaging, Storage Time
ANALISIS EKONOMI MESIN PERONTOK (POWER THRESHER) KEDELAI TIPE MPT 001 Rompas, Putria G.; Molenaar, Robert; Rumambi, David P.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.35082

Abstract

AbstractThis study aims to analyze the economy, total costs and economic feasibilityof the soybean threshing process using the power thresher MPT 001 Type atLolah Satu Village, East Tombariri District, Minahasa Regency. Break evenpoint value or operational break even point of the power thresher MPT 001Type is at an operating level of 17.866,53 kg/year or equivalent to Rp.7.878.577/year. Analysis of the operational feasibility of the power thresherMPT 001 Type based on the amount of service potential available using acommercial scale calculation base is, resuted NPV value of Rp.302.056.654,69, the IRR of 195,982%, the B/C ratio of 1.4497. This conditionshows that the power thresher MPT 001 Type is economically feasible. Basedon the existing condition on site the machine does not fulfil the operationconditions that guarantee sustainability. The sensitivity analysis shows thatchanges in the level of working hours per year and the price of drying servicesare very influential on the feasibility of operations with the lowest level beingthe service price of 1.1 times the total cost of threshing services.Keywords: economics analysis. power thresher, soybean