agriculture; biosystem; mechanics; engineering

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Issue Title
 
Vol 12, No 2 (1998): Buletin Ketenikan Pertanian

The ratio of specifc heat capacity, at constant presszrre to that at constant volume (cdc,J, of a gas can be determined by either the adiabatic expansion method or the sound velocity method. The objective of this experiment is apply the adiabatic expansion method for determining the spec$c heat capacity ratio of gas N2 and O2 The result showed that the ratio were 1.14 and 1.19 respectively for gas N2 and 02.T he value obtained by the experiment was d~flerenta bout 15 to 19% from the result determined by theoretical method using 5 degree of Jkeedom. Theoretically cdc,, of both gas N2 and 0 2 which have 5 degree offreedom are 1.4. The dzflerence was considered to be caused by thee xperimental condition, which were not suflciently adiabatic, as required by the method. However, the simplicity of the method and clarity of its theoretical approach is advantageous to be used by students of Advance Thermodynamic class as a practical exercise.

Abstract   PDF
Wiludjeng Trisasiwi, Dyah Wulandani, Kamaruddin Abdullah, Armansyah H Tambunan
 
Vol 12, No 1 (1998): Buletin Ketenikan Pertanian

The study on Work Load Calibration by using Step Test and Ergometer test was carried out in order to find the best way 10 calibrate the data measurement and to predict human work load by using heart rate data. This study was conducted on four male subjects. but the data analysis has just been done to three subjects due one of the subject was insufficient performance. The sport tester PE3000 heart rate monitor is used for measuring the heart rate data which will be useful for predicting the work load on each activity. The linear regression method is also used to predict the work load based on the heart rate data, so that the best alternative scenario data input will be able to determined by comparing the correlation coefficient or coefficient of determination.

Abstract   PDF
Roni Kastaman, Sam Herodian
 
Vol 5, No 2 (2017): JURNAL KETEKNIKAN PERTANIAN Pelapisan Lilin Karnauba dan Kitosan untuk Mempertahankan Mutu Wortel Kupas Abstract   PDF
Trisma Rezeki Zairisman, I Wayan Budiastra, Sugiyono Sugiyono
 
Vol 3, No 1 (2015): Jurnal Keteknikan Pertanian Pelapis Nanokomposit untuk Pengawetan Salak Pondoh Terolah Minimal Abstract   PDF
Monika Marpaung, Usman Ahmad, Nugraha Edhi S
 
Vol 5, No 3 (2017): JURNAL KETEKNIKAN PERTANIAN Pemanfaatan Air Tanah Dangkal untuk Irigasi Padi Menggunakan Pompa Berbahan Bakar LPG Abstract   PDF
Agus Haryanto, Suharyadi Suharyadi, Budianto Lanya
 
Vol 5, No 1 (2017): JURNAL KETEKNIKAN PERTANIAN Pemanfaatan TKKS Sebagai Pengisi Komposit Epoxy Untuk Struktur Bergerak Mesin CNC Perkayuan Abstract   PDF
Farkhan ., Yohanes Aris Purwanto, Erizal Hambali, Wawan Hermawan
 
Vol 6, No 2 (2018): JURNAL KETEKNIKAN PERTANIAN Pembuatan dan Pendugaan Lama Simpan Bubuk Asam Sunti dalam Kemasan dengan Metode Sorpsi Abstract   PDF
Desi Idayanti, Emmy Darmawati, Sutrisno Sutrisno
 
Vol 2, No 1 (2014): Jurnal Keteknikan Pertanian Pembuatan Digital Elevation Model Resolusi 10m dari Peta RBI dan Survei GPS dengan Algoritma ANUDEM Abstract   PDF
Indarto ., Debby Rio Prasetyo
 
Vol 21, No 2 (2007): Jurnal Keteknikan Pertanian PEMBUATAN La0,8Ca0,2MnO3 SEBAGAI KATODA PADA SOLID OXIDE FUEL CELL (SOFC) DAN KARAKTERISASINYA Abstract   PDF
Riska Ekawita
 
Vol 20, No 3 (2006): Jurnal Keteknikan Pertanian PEMERIKSAAN MUTU KARET RSS MENGGUNAKAN PENGOLAHAN CITRA Abstract   PDF
Usman Ahmad, Fahmi Riadi, I Dewa Made Subrata
 
Vol 2, No 1 (2014): Jurnal Keteknikan Pertanian Pemetaan Indeks Stabilitas Tanah Menggunakan SINMAP di Sub-DAS Rawatamtu Abstract   PDF
Aulia Nafiza Andalina, Hamid Ahmad, Indarto .
 
Vol 21, No 3 (2007): Jurnal Keteknikan Pertanian PEMETAAN ISOPHREATIC KONTUR UNTUK MENDUGA ARAH ALlRAN CEMARAN LINDI DI BAWAH PERMUKAAN TANAH (STUDI KASUS PADA TPA SAMPAH GALUGA) Abstract   PDF
Teti Syahrulyati, Surjono H. Sutjahjo, Soedodo Hardjoamidjojo
 
Vol 22, No 2 (2008): Jurnal Keteknikan Pertanian Pemodelan Dan Simulasi Pengeringan Jagung Pipilan Dalam Pengering Rotari Tumpukan Abstract   PDF
Leopold Oscar Nelwan, I Nengah Suastawa, Sulikah .
 
Vol 3, No 2 (2015): JURNAL KETEKNIKAN PERTANIAN Pemodelan Daya Pengadukan selama Proses Dehidrasi Osmotik Irisan Mangga dalam Larutan Gula Abstract   PDF
Leopold O. Nelwan, Fibula Yudisaputro, Hiroshi Nabetani
 
Vol 6, No 2 (2018): JURNAL KETEKNIKAN PERTANIAN Pemodelan Jaringan Syaraf Tiruan untuk Memprediksi Color Difference Tepung Sagu pada Pneumatic Conveying Recirculated Dryer Abstract   PDF
Abadi Jading, Nursigit Bintoro, Lilik Sutiarso, Joko Nugroho Wahyu Karyadi
 
Vol 2, No 1 (2014): Jurnal Keteknikan Pertanian Pemodelan Lahan Basah Potensial Berdasarkan Indeks Topografi Di Bretagne, Prancis Abstract   PDF
Helena Ariesty, Blandine Lemercier, Lionel Bertheir, Roh Santoso Budi W, Satyanto K. Saptomo
 
Vol 23, No 1 (2009): Jurnal Keteknikan Pertanian

Strawberry is a commercial fruit. It’s Growth and quality is influenced by soil condition, climate, and its self. Irrigation influences soil characteristic, such as: physical, chemical, and microbiological than influence an environment of its growth. this research used drip irrigation method with debit variation and organic matter composition. RCBD was used in this research. Variation of irrigation debit and organic matter composition are the independent variables, whereas dependent variables are C-Organic, N-available, characteristic of soil, and quality of strawberry fruit. Variation of debit irrigation did not significant influence to C-Organic, whereas organic matter composition had significant influence to C-Organic in 63th, 84th, and 105th day of planting. The highest C-Organic content on D3P3 treatment that is 17.92% and the lowest on D2P2 treatment that is 5.19%. Debit of irrigation influence to N-available content in 105th day of planting. The highest N-available content in D3P1 treatment that is 0.88 ppm, whereas the lowest N-available content in D2P3 treatment that is 0.67 ppm. Result of analysis, debit irrigation had significant influence and could increase fruit weight and reduction sugar-content. Organic matter composition had significant influence to increase fruit weight, vitamin C, total of soluble-solid, and reduction sugar-content. Combination of irrigation debit and organic matter composition had significant influence to fruit weight. In the treatment, debit of
irrigation that make good influence to fruit quality is 300 ml/day/polybag and 1:2 ratio of organic matter composition.


Keywords: drip irrigation, organic matter, strawberry
Diterima: 16 September 2008; Disetujui: 25 Pebruari 2009

Abstract   PDF
Afik Hardanto, Asna Mustofa, Sumarni .
 
Vol 20, No 3 (2006): Jurnal Keteknikan Pertanian PEMUTUAN EDAMAME MENGGUNAKAN PENGOLAHAN CITRA DAN JARINGAN SYARAF TIRUAN Abstract   PDF
Dedy Wirawan Soedibyo, I Dewa Made Subrata, Suroso ., Usman Ahmad
 
Vol 6, No 1 (2018): JURNAL KETEKNIKAN PERTANIAN Penalaan PID Menggunakan Internal Model Controller dengan Pendekatan Model Tustin Abstract   PDF
Abdul Azis, Radite Praeko Agus Setiawan, Wawan Hermawan, Tineke Mandang
 
Vol 21, No 2 (2007): Jurnal Keteknikan Pertanian PENANGANAN PASCA PANEN PADI DI INDONESIA Abstract   PDF
Sutrisno Sutrisno
 
Vol 22, No 1 (2008): Jurnal Keteknikan Pertanian Pendekatan Analitik untuk Menduga Koefisien Pindah Panas Konveksi Abstract   PDF
Ida Bagus Putu Gunadnya, Kamaruddin Abdullah, Armansyah Halomoan Tambunan
 
Vol 20, No 2 (2006): Jurnal Keteknikan Pertanian PENDEKATAN ERGONOMI MAKRO SEBAGAI SOLUSI PERENCANAAN SISTEM KERJA BERGILIR UNTUK MENINGKATKAN PRODUKTIVITAS, KUALITAS DAN KESELAMATAN KERJA INDUSTRI Abstract   PDF
Lamto Widodo, Bambang Pramudya, Sam Herodian, M. Faiz Syu'aib
 
Vol 24, No 2 (2010): Jurnal Keteknikan Pertanian Pendeteksian Kerapatan dan Jenis Gulma dengan Metode Bayes dan Analisis Dimensi Fraktal untuk Pengendalian Gulma Secara Selektif Abstract   PDF
Mohamad Solahudin, Kudang Boro Seminar, I Wayan Astika, Agus Buono
 
Vol 2, No 2 (2014): Jurnal Keteknikan Pertanian Pendugaan Kadar Air dan Total Karoten Tandan Buah Segar (TBS) Kelapa Sawit Menggunakan NIR Spektroskopi Abstract   PDF
Zaqlul Iqbal, Sam Herodian, Slamet Widodo
 
Vol 21, No 4 (2007): Jurnal Keteknikan Pertanian PENDUGAAN KANDUNGAN AIR, PROTEIN, LlSIN DAN METIONIN TEPUNG IKAN DENGAN JARINGAN SYARAF TIRUAN BERDASARKAN ABSORBSI NEAR INFRARED Abstract   PDF
Adrizal ., Hadi K. Purwadaria, I Wayan Budiastra, Wiranda G. Piliang
 
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