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Siti Mechram
Program Studi Teknik Pertanian, Fakultas Pertanian, Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Engineering

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Perbandingan Nilai Intersepsi Pohon Mahoni (Swietania mahagoni) dan Pohon Pinus (Casuarina cunninghamia) Siti Mechram; Susi Chairani; Ahmad Zaki
Rona Teknik Pertanian Vol 5, No 2 (2012): Volume 5, No. 2, Oktober 2012
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v5i2.235

Abstract

Comparation of Interception Loss on Mahoni (Swietania mahagoni) and Pinus (Casuarina cunninghamia)ABSTRACT. Interception of rain is the retention of rainwater on surface vegetation before it evaporates back into the atmosphere. Research relating to the interception is still lacking, so it is necessary to study the interception on some types of plants. Although the interception had a little value, and sometimes overlooked, but in some plants have a considerable effect. The purpose of this study was to determine the magnitude of interception in Mahogany and Pine trees, as well as to determine the relationship between rainfall and interception. In this study, samples taken at the Mahogany and Pine trees by the number of 3 samples of each tree. There were two approaches to measure the amount of interception, the first approach was the Volume Balance Approach and the second approach was the Energy Balance Approach. In this study, the volume balance approach, with measurements of rainfall, throughfall, stemflow and interception for ten days of rainfall. The average amount of interception Mahogany obtained 15.5 mm (7.31%) of the total amount of rainfall and the correlation coefficient (r) was at 0.554. While the average number of interception Pinus acquired 87.23 mm (41.15%) of the total amount of rainfall and the correlation coefficient (r) was at 0.505. The size of the interception was influenced by wind speed, density and canopy shape. The research obtained that the interception for pine trees was higher than Mahogany trees. The results also showed that the higher percentage of rainfall, the smaller interception. This was due to the canopy conditions and climatic factors.  
Simulasi Penentuan Kebutuhan Daya Pompa Pada Sistem Transpor Bahan Pangan Cair Dengan Menggunakan Parameter Reologi Susu Kental Manis Ratna Ratna; Darwin Darwin; Siti Mechram
Rona Teknik Pertanian Vol 6, No 1 (2013): Volume 6, No. 1, April 2013
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v6i1.360

Abstract

ABSTRAK. Simulasi penentuan kebutuhan pompa energi pada sistem bahan makanan transfer cair dengan menggunakan parameter software hasil krim reologi kental manis. Software ini dapat digunakan untuk menentukan energi pompa yang dibutuhkan oleh sistem transfer krim kental manis sehingga tidak terjadinya produk lompat dan gelembung yang menghancurkan krim kental manis. Sehingga pada saat dipasarkan, produk tidak lagi menarik dan baik untuk dikonsumsi. Sebelum melakukan simulasi dengan program komputer, dibutuhkan data viskositas (kekentalan) parameter reologi krim kental manis. Hal ini diperlukan untuk mengetahui pengaruh parameter reologi untuk energi pompa yang diperlukan oleh sistem transfer krim kental manis. Dari simulasi diperoleh gambaran yang baik lebih untuk merancang suatu sistem transfer krim kental manis di salah satu pabrik pengolahan.A Simulation to Determine the Requirement of Pump Power on Transport System for Liquid Food Material using Rheology Parameter of Sweetened Condensed MilkABSTRACT. A simulation using a software to determine the requirement of pump power on transport system for liquid food material using rheology as parameter for sweetened condensed milk. The software was able to determine the pump energy required by a transfer system of sweetened condensed milk in order to prevent the occurrence of the product jump and the effervescence. The effervescence would destroy the cream of sweetened condensed milk, so at the time of marketing, the product was no longer in good condition to consume. Before conducting simulation using computer program, viscosity data of sweetened condensed milk was required to know the influence parameter of rheology on pump power required by a transport system of sweetened condensed milk. From the simulation, a more good description was obtained to design a transfer system of sweetened condensed milk at one particular factory.
Model Simulasi Penanganan Pascapanen Sekunder (Teknologi Pengolahan) Nanas (Ananas comosus merr) (Studi Kasus: Kabupaten Aceh Tengah) Raida Agustina; Dewi Sri Jayanti; Siti Mechram
Rona Teknik Pertanian Vol 7, No 1 (2014): Volume 7, No. 1, April 2014
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v7i1.2645

Abstract

Abstrak. Nanas (Ananas comosus Merr) mempunyai prospek agribisnis yang semakin meningkat baik untuk kebutuhan buah segar maupun bahan olahan. Model simulasi penanganan pascapanen sekunder (teknologi pengolahan) nanas (selai, dodol dan manisan) merupakan salah satu upaya untuk menginformasikan kepada pihak yang terkait agar dapat memperoleh informasi tingkat keuntungan (pendapatan) yang lebih besar, jika dibandingkan dengan menjual langsung dalam bentuk buah segar. Tujuan penelitian ini adalah mendapatkan informasi kelayakan penanganan pascapanen sekunder (teknologi pengolahan); mensimulasi tingkat keuntungan yang diperoleh petani nanas melalui produk olahan; serta memprediksi tingkat keuntungan petani nanas selama 8 tahun ke depan. Pengolahan data dilakukan dengan menggunakan software Powersim untuk melihat kelayakan penanganan pasca panen sekunder (teknologi Pengolahan) nanas berdasarkan analisis teknis dan ekonomi. Pada tahun 2008 petani nanas mendapatkan penerimaan dari manisan nanas sebesar Rp 5.072.874,60, penerimaan dari selai nanas sebesar Rp 4.191.896, 60, dan  penerimaan dari dodol nanas sebesar Rp 26.664.472,00. Jika diasumsikan harga jual produk olahan nanas tetap maka pada tahun 2020 penerimaan petani dari penjualan manisan nanas bisa mencapai Rp 30.998.132,90, penerimaan dari selai nanas bisa mencapai Rp 25.586.879,80, dan  penerimaan dari dodol nanas bisa mencapai Rp 135.572.561,00. Total keuntungan petani nanas dari penerimaan hasil penjualan produk olahan nanas yang berupa manisan, selai dan dodol di Kabupaten Aceh Tengah mencapai Rp 35.929.243,20 pada tahun 2008. Dan hasil simulasi prediksi pada tahun 2020 keuntungan petani nanas dapat mencapai Rp 195.147.574,00.. Simulation Model of Secondary Postharvest Handling (Processing Technology) of Pineapple (Ananas comosus Merr) (Case Study: Aceh Tengah District)Abstract. Pineapple (Ananas comosus Merr) has a growing agribusiness prospects in terms of  fresh fruit and processed materials. Simulation model of secondary postharvest handling (processing technology) of  pineapple (jam, candy, and dodol) is an effort informing the relevant parties in order to obtain information rate of profit (income) greater compared with direct selling in the form of fresh fruit. The purpose of this study was to get some information of an eligibility secondary postharvest handling (processing technology); to simulate the level of benefits pineapple growers through refined products, as well as to predict the pineapple farmer returns for 8 years.  Data processing was performed using software Powersim to measure the feasibility of secondary post-harvest handling (processing technology) pineapple based on the technical and economic analysis. In 2008, farmers obtain an acceptance of dodol pineapple Rp 5,072,874.60 pineapple, pineapple jam acceptance of Rp 4,191,896, 60, and acceptance of candy pineapple Rp 26,664,472.00. If it is assumed selling price of processed pineapple products in 2020 remains the farmer acceptance of dodol pineapple sales may reach Rp 30,998,132.90, acceptance of pineapple jam may reach Rp 25,586,879.80 and acceptance of pineapple candy may reach Rp 135 572. 561.00. The total profit of the pineapple growers receive from the sale of refined products such as dodol pineapple, jam, and candy in Aceh Tengah District reached Rp 35,929,243.20 in 2008. And the simulation results predicted 2020 profit pineapple farmers may reach Rp 195,147,574.00
Co-Authors Agus A. Munawar Ahmad Zaki Darwin Darwin Dewi Sri Jayanti Purwana Satrio Raida Agustina Ratna Ratna Susi Chairani Syahrul Syahrul