Articles

Karakterisasi Aliran HilirKipas Aksial sudu Datar Variasi Span Sudu dan Sudut Serang Waluyo, Joko; S, Sutrisno
Majalah Forum Teknik UGM Vol 27, No 2&3 (2003)
Publisher : Majalah Forum Teknik UGM

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Abstract The velocity field downnstream of an axial fan was measured using probe 55 P 51 of a Hot Wire Anemometer to investigate characteristic of the flow. Flat blades werevaried in length of blades span and angle of attock. The length of blades span was varied at 0.3, 05, 0.75 and l times of 450 mm, at various angles of attack at 5º, 10º and I5º, while it was operated at constant speed of 610 rpm. The measurement was conducted at vertical distances 210, 360, 510 and 660 mm from the fan. The investigation was focused on the mean velocity in axial and tangential directions at measurement position 210 mrn. Properties of theflow were computed based on integration of Reynolds momentum and continuity equations for determining flux of axial and angularmomentum. The performance of the axial fan was determined by comparing values of torque, thrust, volume rate and consumed power. The swirling number of the flow was also calculated as a consideration to determine performance of the axial fan. Results indicate that operating the axial fan in variation bladesspan have significant effect to the value of axial and tangential mean velocities and the area off low, meanwhile variation in angle of attack just influence to the value of axial and tangential mean velocities. Increasing ofblades span at constant angle of attack If increases volume rate, torque, and thrust of flow and consumed power oJthe fan. Investigation of increasing angle of attack at span blade 450 mm also increases those values. Span blade 450 mm at angle of attack l5º have a highest performance and consumed power. It can be shown also that swirling increase with respect to increase of angle of attack. Keywords: velocityfield downstream axial flowfan, spans blade,angle of attack.
KAJIAN TEKNOEKONOMI PERANGKAT PENCACAH RADIOIMMUNOASSAY (RIA) IP.8 Waluyo, Joko; Nurcahyadi, Hari; Ariyanto, Agus
TEKNOEKONOMI - Jurnal Pendayagunaan Hasil Litbang Iptek Nuklir Vol 7, No 2 (2012): Nopember 2012
Publisher : BATAN

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Kajian ini mempunyai tujuan untuk menentukan nilai ekonomis dari suatu perangkat pencacah RIA IP.8. Hal ini diperlukan sebagai bahan pertimbangan kelayakan investasi bagi para investor yang ingin mengembangkan usaha untuk memproduksi perangkat ini. Pada kajian ini dilakukan beberapa tahapan kegiatan. Tahap awal yaitu penyiapan larutan standar Aflatoksin B1 yang bersifat karsinogenik sebagai bahan kit RIA yang akan dilakukan ujicoba pencacahan. Tahap selanjutnya adalah ujicoba mesin pencacah kit RIA IP.8 dengan menggunakan sampel kit RIA Aflatoksin B1. Tahap akhir adalah melakukan perhitungan teknoekonomi berdasarkan seluruh biaya yang digunakan dalam pembuatan, penyiapan dan pengujian perangkat pencacah RIA IP.8 serta asumsi-asumsi yang diperlukan. Kajian teknoekonomi dengan asumsi modal yang digunakan 70% berasal dari pinjaman bank, diperoleh hasil sebagai berikut: Net Present Value (NPV) 1.873.632.901, Internal Rate of Return (IRR) 45,5%, Payback Period (PP) 3 tahun, Benefit/Cost Ratio (B/C) 3,8 sehingga peluang investasi ini layak dipertimbangkan untuk dilakukan.  This study has the objective to determine the economic value of an enumerator device IP.8 RIA. It is necessary for consideration the feasibility of investment for investors who want to develop the business to manufacture these devices. In this study conducted a few stages. The early stages of the preparation of standard solutions which are carcinogenic aflatoxin B1 as a RIA kit will do tests enumeration. The next step is testing thrasher IP.8 RIA kit using RIA kit Aflatoxins B1 samples. The final stage is to perform calculations based on the total cost teknoekonomi used in the manufacture, preparation and testing of the enumerators RIA IP.8 and assumptions required. Studies teknoekonomi assuming capital employed 70% from bank loans, obtained the following results: Net Present Value (NPV) 1873632901, Internal Rate of Return (IRR) of 45.5%, Payback Period (PP) 3 years, Benefit / Cost Ratio (B / C) 3.8 so this investment opportunity worth considering to do.  
Purification and Characterization of Antibacterial Protein from Pheretima javanica Waluyo, Joko; Sugiharto, Bambang; Cholies Zaini, Noor
Jurnal ILMU DASAR Vol 8, No 1 (2007)
Publisher : Fakultas MIPA Universitas Jember

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This research aimed to examine and isolate antibakterial protein from three species of earthworms has antibacterial potencies. The research was conducted in several stages, namely: extraction earthworm by using three kinds of solvents; antibacterial activity test of earthworm extract by agar diffusion method; purification of antibacterial protein by using DEAE chromatography, filtration column chromatography, and Native-PAGE. The results showed that three species of earthworms contained antibacterial protein. The activity of antibacterial protein extract of Pheretima javanica in MOPS buffer was highestand the inhibition zone diameter were10.0-14.0 mm. Compared to the other solven, the of MOPS buffer most precise for the solvent of protein. The extract of Pheretima javanica with MOPS solvent was fractionated by using DEAE chromatography (anion exchanger) and produced three peaks of protein group. Among the peaks, last peak that need 0.380 M NaCl to eluate performed antibacterial activity. Further fractionation of the protein by using gel filtration chromatography produced two peaks and one of the peak has antibacterial activity. Further purification that carried out by cutting the active fraction of second protein peak by using Native-PAGE produced seven bands. A single protein of the sixth band from lowest band showed antibacterial activity.Keywords: Pheretima javanica, protein purification, chromatography, electrophoresis, antibacterialprotein, agar diffusion method. 
DAMPAK PEMBIAYAAN DEFISIT ANGGARAN DENGAN UTANG LUAR NEGERI TERHADAP INFLASI DAN PERTUMBUHAN EKONOMI: Studi Kasus Indonesia Tahun 1970-2003 Waluyo, Joko
Jurnal Ekonomi dan Pembangunan Indonesia Vol 7, No 1 (2006): Juli
Publisher : Department of Economics-FEUI

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The main purpose of this study is to find the effect of budget deficit with foreign loans as source of funding on inflation and economic growth. This study focuses on transmission mechanism of budget deficit funding effects on inflation and economic growth. We use a specific simultaneous macroeconomic model which includes 17 behavioral equations and 18 identity equations with 6 blocks in this study, Two Stage Least Square (TSLS) method is employed to estimate the behavioral equations in the model. This study use Indonesia secondary economic data from 1970 to 2003. Econometric tests are performed to produce BLUE estimator. This study also use stochastic simulation with 10000 replications to simulate policy.The results show that using foreign loan to fund budget deficit increases both economic growth and inflation. This result is also supported by the simulation results which show that increase in the proceeds of new foreign loan increases reserves which in turn increase primary money/money supply/monetary base. Interaction of monetary base with money multiplier then increases price level. increase in capital in flow from increase in foreign loan increases government spending which also increases government spending increases in the government spending then add to government capital stock so that economic growth also increases.
REKAYASA RANCANGAN MESIN TEMPA RAMAH LINGKUNGAN GUNA MENINGKATKAN KAPASITAS PRODUKSI PADA KELOMPOK PANDE BESI Waluyo, Joko; Pratiwi, Yuli; Parwati, Cyrilla Indri
JURNAL GAUNG INFORMATIKA Vol 12 No 1 (2019): Jurnal Gaung Informatika Vol.12 No 1 Januari 2019
Publisher : JURNAL GAUNG INFORMATIKA

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This study purpose to design an environmentally friendly forging machine in the group of "DL" and "PRT" pande besi who are partners in the Village of Palbapang, PandakDistrict, Bantul Regency. So far, the two partners have made agricultural equipment manually by treating raw materials or heated iron forged repeatedly using a hammer according to the desired form of agricultural equipment. For this process, 3 workers are needed, even though the current condition of the two groups of pande besi is the difficulty of finding workers, so that market demand related to agricultural equipment cannot be fulfilled.The research method is carried out after all data and information have been collected by designing an environmentally friendly forging machine with the help of showhare autocad, then looking for materials and tools that will be used to make the design of the forging machine, and making environmentally friendly forging machinesaccording to the specifications obtained . Before being submitted to partners, testing of the number of punches per minute, as well as the noise level. The results that have been achieved in this study are the creation of an environmentally friendly forging machine design with the capacity to forge machetes roughly 5 pieces / hour, as well as a one-time blow to the depressed workpiece depth of 2 to 3 mm with the number of blows produced 200 to 250 punch a minute, with the noisecaused to the forging machine at 60 dBA. From these results there was a 45% reduction in the noise figure from the previous one using a 110.17dBA manual tool to 60 dBA.The capacity of agricultural equipment production in the two partners of the iron court group increased to 2 to 3 times when compared to using human labor, and in the end could improve the welfare of the partner iron-iron group and the iron-iron society in general.
PENERAPAN MODEL PEMBELAJARAN QUANTUM LEARNING DENGAN MEDIA FLASHCARD UNTUK MENINGKATKAN MOTIVASI DAN HASIL BELAJAR SISWA KELAS X DI SMA NEGERI 1 PURWOHARJO-BANYUWANGI TAHUN PELAJARAN 2011/2012 (PADA POKOK BAHASAN ANIMALIA) Adityarini, Yunis; Waluyo, Joko; Aprilya, Sulifah
Pancaran Pendidikan Vol 2, No 2 (2013)
Publisher : Pancaran Pendidikan

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Abstract : Learning motivation influences to the student achievement. Quantum teaching focuses on the dynamic relationships within the classroom environment, interactions establishing the foundation and framework for the study. Flashcards is a pictorial medium that allows students to learn biology. The purpose of this study was to determine the students motivation and students achievement in learning biology using quantum teaching learning models with flashcards. Media research is a classroom action research (CAR), held in SMA Negeri 1 Purwoharjo-Banyuwangi. The samples in this study were the students of X5 of second semester in the 2011/2012 academic year . Measurement is done by increasing student motivation questionnaire ARCS, while for the students achievement considered from the three domains, namely cognitive, affective and psychomotor with reference standard minimum passing grade 75. For the assessment of affective and psychomotor used assessment instruments was made by researcher. The results showed that the improvment in the motivation aspect of attention is 1.19, relevance aspect is 0.33, confidence aspect is 0.64, and aspects of satisfaction is 0.95. For learning outcome itself has increased an average is 1.8% in each realm. Key Words : quantum teaching, flashcard, motivation, Student achievement.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE CIRC (COOPERATIVE INTEGRATED READING AND COMPOSITION) BERBANTUAN LKS UNTUK MENINGKATKAN MOTIVASI DANHASIL BELAJAR BIOLOGI(SISWA KELAS VIII SMP NEGERI 14 JEMBER TAHUN PELAJARAN 2012/2013) Cahyani, Dwi; Waluyo, Joko; Prihatin, Jekti
Pancaran Pendidikan Vol 2, No 3 (2013)
Publisher : Pancaran Pendidikan

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Abstract.Improvement in the learning process needs to be established and developed to create interactive learning between teachers and students. In this case, students are required to take an active role in the learning process. But in fact, learning in SMP 14 Jember is still the conventional, where the delivery system is more dominated by teachers, while students tend to be silent and passively receive course materials. This may result in low motivation and student learning outcomes, but it is also of interest to read too low so students do not understand the concept of the material presented. Therefore, we need a model of learning appropriate. One model of learning that can be used is the CIRC (Cooperative Integrated Reading and Composition) aided student worksheets. The application of this learning model aims to determine whether or not to increase motivation and learning outcomes of students of SMP Negeri 14 Jember. The subject of this action research is the eighth grade students class D of SMP Negeri 14 Jember first semester of academic year 20012/2013. Based on analysis showed an increase students in motivation in attention of 4,19 (13,09%), aspects of relevance increased by 5,56 (17,36%), aspect confidence increased by 3,16 (9,87%), and aspects of satisfaction increased by 4,52 (14,13%) than that obtained increasing mastery of learning outcomes in the classical i.e cognitive increased by 24.2% and psychomotor domains increased by 13.4%. Key Words:CIRC, learning outcomes, motivation, student worksheet
PENERAPAN MODEL PEMBELAJARAN TEAMS GAMES TOURNAMENT (TGT) DENGAN PERMAINAN TEKA TEKI SILANG (TTS) UNTUK MENINGKATKAN MOTIVASI DAN HASIL BELAJAR BIOLOGI (POKOK BAHASAN EKOSISTEM DI SMP NEGERI 14 JEMBER TAHUN PELAJARAN 2012/2013) Kinanti, Putri Wahyu; Waluyo, Joko; Hariyadi, Slamet
Pancaran Pendidikan Vol 3, No 1 (2014)
Publisher : Pancaran Pendidikan

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Abstract.Education is a process of interaction that encourages learning. An appropriate media method is needed to achieve the objectives based of the material. The inappropiate method will influence the students’ achievement.It will influence the studentsmotivation and make the student lazy to study. The teaching learning process of SMPN 14 Jember was centered to the teacher, meanwhile the students were not active and feel bored in the teaching learning process. From those reasons, an appropriate method is needed. One of the appropriate method that used was Teams Games Tournament (TGT) by crossword puzzle’s game. This research was intended to know the effect of using TGT by crossword puzzle’s game concerning to the students’ motivation and their achievement at SMPN 14 Jember  in the 2012/2013 academic year. Based on the result of research was conducted, the use of TGT method had significant by effect concerning to the students’ motivation and their achievement of class VII of SMPN 14 Jember. The students’ motivation was increased from the first cycle to the second cycle. The aspects of attitude increased by 2,11 (7,07%), the aspects of relevence increased by 3,29 (10,96%), the aspects of cobfidence was 4,95 (16,49%), and the aspects of statisfaction increased by 2,69 (8,29%). While the average of the students’ result in the affective domain was 23,7%, while the cognitive domain was 15,8. Key Words :TGT, crossword puzzles, motivation, learning outcomes.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE THINK, TALK, WRITE(TTW)DENGAN TEKNIK TALKING STICK DALAM MENINGKATKAN KARAKTER DAN HASIL BELAJAR IPA-BIOLOGI (Siswa Kelas VII-E SMP Negeri 2 Kalisat Semester Genap Tahun Ajaran 2012/2013) Yanuarta, Lidya; Waluyo, Joko; Suratno, S
Pancaran Pendidikan Vol 3, No 1 (2014)
Publisher : Pancaran Pendidikan

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Abstract:Cooperative learning model of Think, Talk, Write (TTW) was a model developed byHuinkerandLaughlin. This model basedon the understandingthat learningwasasocialbehavior. Inthislearning model,students were encouragedtothink, speak, andthenwrite downrelated toa topic. Colaborated with TalkingSticktechniques can makestudentsmoreconduciveandenjoyable. The purposeofthis researchwastoincrease student’scharacter, achievement, and completeness ofstudent achievement using the Cooperative Learning model of Think, Talk, Write (TTW) with Talking Stick on sub biology topicsEnvironmental in class VII E SMP Negeri 2 Kalisat Jember. The research was Classroom Action Research. Result of this research, there was step-up character from pre cycle until cycle 2 that was inquiring sense character worked up to BT (Not Appeared) with percentage 67.10%. Then discipline character increased on MB (Start Growing) with percentage 51,31%. Then responsibility character increased on MK (Start Consistent) with percentage 47,36%. The increase of average achievement was 77,1 and classical thoroughness in cognitive aspect was increased become 78,94%.It concluded thatcooperative learning model ofThink, Talk, Write (TTW) with theTalking Stick can increased students character, achievement, and completeness of students achievement in class VII E SMP Negeri 2 Kalisat Jember. Key Words: Students character, Think Talk Write, Achievement, implementation  
PENGARUH PEMBELAJARAN BIOLOGI MELALUI METODE PERMAINAN DENGAN MEDIA KARTU KWARTET TERHADAP KEAKTIFAN DAN HASIL BELAJAR SISWA KELAS VII SMP NEGERI 13 KABUPATEN JEMBER TAHUN AJARAN 2012/2013 Darma, Putri; Waluyo, Joko; Pujiastuti, p
Pancaran Pendidikan Vol 3, No 1 (2014)
Publisher : Pancaran Pendidikan

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Abstract.Learning using the game method with kwartet cards used as an alternative learning of biology.  Game method is one of method of learning that can improve student’s learning activity and learning achievement. The purpose of this research is to test the influence of game method with kwartet card on student’s learning activity and learning achievement in Biology subject. This research use two classes, control class using conventional methods and experiment class using game method with kwartet cards . Activity of students in tests use independent sample T-test. Based on the analysis results obtained p = 0.000, in other words there is a difference in the student activity using game method with kwartet cards and it can be concluded that the method of the game with the media card quartets significant effect on student learning outcomes. Learning achievement is analized with ANACOVA test. Based on the analysis, accupied p=0,000 that can be conclude that game method with kwartet card significanly influence the learning activity and the learning achievement. Key Words: Learning, kwartet cards, learning activity, learning outcomes.  
Co-Authors - Sugiyanto . Muryanto, . A Anisa Abimanyu, Haznan Abimanyu Adhi Irianto Mastur, Adhi Irianto Adi Purwanto Agnesa, Oki Sandra Agus Ariyanto Agus Imam Sonhaji, Agus Imam Akhmad F. Alhikami, Akhmad F. Annisa Dieni Lestari, Annisa Dieni Anny Sulaswatty, Anny Anny Sulaswaty, Anny Aosoby, Recki Ariyawati, Prasetyaning Astuti Mahayu Bambang Sugiharto Bayu, Rahmat Cyrilla Indri Parwati, Cyrilla Indri Dian Burhani, Dian Dian Sulastini, Dian Didik SULISTYANTO Dodit Ari Guntoro, Dodit Ari Dwi Cahyani Dwi Wahyuni Eka Triwahyuni, Eka Faisnur Iman, Faisnur Fintoro, Teguh Gatot Santoso Gunawan Nugroho Hari Nurcahyadi Haznan Abimanyu Herri Susanto Hery Mahendra, Hery Hudiyo Firmanto, Hudiyo IGBN Makertihartha Iis Nur Asyiah Imam Sodikin Indriyani, Rusmi Ito, Yonathan Jekti Prihatin Kamalia Fikri Lidya Yanuarta Luchman Hakim Lugi Hartanto, Lugi Luh Titis Ayu Mochammad Iqbal Muryanto Muryanto, Muryanto Muthia Syafika Haq, Muthia Syafika Nanik Purwati, Nanik Nikmatul Hidayah Nino Rinaldi Nokukazu Nakagoshi, Nokukazu Noor Cholies Zaini Nur Amida Kriana P Pujiastuti Putri Darma Putri Wahyu Kinanti Rahman Setiawan, Arief Ameir Ramadhana, Indah Retuwati Rhomadhon, Hasan Albana Ria Ulfah, Ria Richards, Tobias Ridho Bayuaji Ridho Hantoro Rina Sugiarti Dwi Gita, Rina Sugiarti Dwi Rozi, Anggun Rifka S Suratno S, Achmad Taufiq Saiful Huda Simamora, Riandy Debataraja Siskayanti, Abil Fida Siti Murdiyah, Siti Slamet Hariyadi Sri Hartatik Sri Rahayu Lestari Subchan, Wahju Sudarmadji Sudarmadji Sudiyani, Yanni Sudiyani SUGENG HARIANTO Sugiyanto Sugiyanto Sujarwo Sujarwo Sulifah Aprilya Sulifah Aprilya Hariani Sutrisno S Teuku Beuna Bardant Toto Rusianto Totok R. Biyanto Umi Fadilah, Umi Vivi Darmayanti Wachju Subchan Wagiyana Wagiyana, Wagiyana Wiloso, Edi Iswanto wuryanto, Toto Sri Yanni Sudiyani Yuli Pratiwi, Yuli Yulia Efni Yulivarta, Avishia Prisma Yunianto, A. Yunis Adityarini Yunita, Della Mahda ‘Aliyah, Hana Himatul