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Keragaan tiga jenis planlet anggrek Phalaenopsis asal Protocorm yang diinduksi Ethyl Methyl Sulfonate (EMS) secara in vitro Romiyadi, Romiyadi; Komariah, Ai; Amien, Suseno
Kultivasi Vol 17, No 1 (2018)
Publisher : Fakultas Pertanian UNPAD

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Abstract. This research was conducted to determine the effect of concentration of Ethyl Methyl Sulfonate (EMS) to performance of three types of Phalaenopsis Planlets and to know the optimum concentration of EMS on any type of Phalaenopsis orchids. The experiment was conduc-ted at Tissue Culture Laboratory of the Faculty of Agriculture, Winaya Mukti University, Sumedang. It used a completely randomized design (CRD) with factorial pattern, that consisted of two factors and replicated twice.The first factor was the type of Phalaenopsis that resulted form hybridization which consisted of v1 (Phalaenopsis 717 X Phalae-nopsis Fire Bird), v2 (Phalaenopsis Tianong Rose X Sibling), and v3 (Phalaenopsis Luchia Pink X Phalae-nopsis Chain Xen Mammon). The second factor was the concentration of EMS that consisted of e0 (0% EMS/control), e1 (0,05% EMS), e2 (0,10% EMS), e3 (0,15% EMS), e4 (0,20% EMS), and e5 (0,25% EMS). Explant protocorm of three types of Phalae-nopsis soaked in a solution of EMS by each treat-ment for 3 hours, and cultured on MS medium Basal Modified Multiplication Shoot for 10 weeks. The experimental results showed that there are interaction between the three types of Phalae-nopsis result of a cross with a concentration of EMS to variable number of roots. Orchids P. 717 X P. Fire Bird had higherÂ number of leaves, number of roots, leaf leang, and root length than the other. The result showed that there were interaction between three species of Phalaenopsis orchid from the crossing with EMS concentration on root variables. Orchid P. 717 X P. Fire Bird has the number of leaves, the number of roots, the number of shoots, leaf length and root length better than other types. EMS concentrations independently atÂ all levels of treatment can not increase the number of leaves, the number of roots, fresh weight of planlet, leaf length, and root length.Keywords: Phalaenopsis, the concentration of EMS, in vitro cultureSari. Penelitian ini mempelajari dan mengetahui pengaruh konsentrasi Ethyl Methyl Sulfonate (EMS) terhadap keragaan planlet tiga jenis anggrek Phalaenopsis asal protocorm dan mencari konsentrasi optimum EMS untuk setiap jenis anggrek Phalae-nopsis secara in vitro.Percobaan dilaksanakan di Laboratorium Kultur Jaringan Fakultas Pertanian Universitas Winaya Mukti Sumedang. Eksperimen menggunakan Rancangan Acak Lengkap (RAL) Pola Faktorial, yang terdiri atas dua faktor dan diulang sebanyak dua kali.Faktor pertama adalah jenis anggrek Phalaenopsis hasil persilangan yang terdiri atas tiga jenis, yaitu v1 (Phalaenopsis 717 X Phalaenopsis Fire Bird), v2 (Phalaenopsis Tianong Rose X Sibling), dan v3 (Phalaenopsis Luchia Pink X Phalaenopsis Chain Xen Mammon). Faktor kedua adalah EMS yang terdiri atas enam taraf perlakuan, yaitu e0 (0% EMS/kontrol), e1 (0,05% EMS), e2 (0,10% EMS), e3 (0,15% EMS), e4 (0,20% EMS), dan e5 (0,25% EMS). Eksplan berupa protocorm dari tiga jenis anggrek Phalaenopsis hasil persilangan yang direndam dalam larutan EMS berdasarkan masing-masing perlakuan selama 3 jam, dan dikulturkan pada media MS Modified Multiplication Shoot Basal selama 10 minggu.Hasil penelitian menunjukkan terjadi interaksi antara tiga jenis anggrek Phalaenopsis hasil persilangan dengan konsentrasi EMS terhadap variabel jumlah akar.Anggrek P. 717 X P.Fire Bird memiliki jumlah daun, jumlah akar, jumlah tunas, panjang daun dan panjang akar yang lebih baik dibandingkan jenis lainnya. Konsentrasi EMS secara mandiri pada semua taraf perlakuan tidak dapat meningkatkan jumlah daun, jumlah akar, bobot segar planlet, panjang daun, dan panjang akar.Kata Kunci: Phalaenopsis, Konsentrasi EMS, dan Budidaya In Vitro

Estimation of the Manufacturing Product Complexity Based on the Product Information on Turning Process Product Romiyadi, Romiyadi; Azriadi, Emon
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Publisher : Kopertis Wilayah X

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Product complexity index was an indicator of a manufacturing product that describes the products are designed and manufactured with a level of complexity. In this study, assesment of product complexity was conducted on milling processing product. Assesment conducted on the variable of turning processing product complexity based on features of the products and specifications of materials, shapes, geometry, tolerance, general surface finish and hardness. ElMaraghy introduced the method in this study and Urbanic based on information product were absolute quantity information, diversity of information, and content of product information. The results of product complexity assesment indicated that the product of original External Thread Bearing Housing had product complexity index of 6.28. While the results of product complexity assesment indicated that, the product of redesign External Thread Bearing Housing had product complexity index of 8.96.

Design and Manufacturing of Soybean Epidermis Peeler Machine Romiyadi Romiyadi; Yudi Dwianda
Jurnal Teknik Mesin (JTM) Vol 9, No 1 (2019)
Publisher : LP2M - Institut Teknologi Padang

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The soybean epidermis peeler machine was a machine used to peel of soybean epidermis from the soybean. The purpose of the study was to design and manufacture of soybean epidermis peeler machine with a capacity of 3 kg for a process. In this study, the soybean epidermis peeler machine was designed and manufactured with uses 2 shaft to peel the soybean epidermis from the soybean. From the process of designing and manufacturing, has produced a soybean epidermis peeler machine with a capacity of 3 kg for a process. The machine uses a electric motor with a power of 0.5 HP. The transmission system uses pulley transmission between electric motor with 1st shaft and uses sprocket and gear transmission between 1st shaft and 2nd shaft.

Design and Manufacturing of Spinner Machine Using Speed Control Romiyadi Romiyadi
Jurnal Teknik Mesin (JTM) Vol 8, No 1 (2018)
Publisher : LP2M - Institut Teknologi Padang

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The spinner machine was a machine used to reduce the oil content in the foods like chips and can improve the quality of the food to be durable. The purpose of the study was to design and manufacture of spinner machine with a capacity of 4 kg. In this study, the spinner machine was designed and manufactured with a speed control. From the process of designing and manufacturing, has produced a spinner machine with a capacity of 4 kg for a process. The machine uses a electric motor with a power of 0.25 HP.

The Effect of Misalignment to Vibration, Electric Current and Shaft Rotation Speed on The Coupling Transmision Romiyadi Romiyadi; Purnama Irwan
Jurnal Teknik Mesin (JTM) Vol 10, No 2 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Coupling is one of the components are widely used in various industries. Coupling is widely used as a power transfer transmission. Coupling have a long life time, it mean coupling was damage if out of the maintenance. The one factor is misalignment. This study aim to determine the effect of misalignment on the coupling transmission to vibration, electric current and shaft rotation speed. In this study, was done alignment process with variations of misalignment on the coupling transmission and was done measurement value of vibration, electric current and shaft rotation speed. The study results show that the changed of misalignment would give a positive impact to vibration and electric current. For the effect misalignment to shaft rotation speed, the study results show that the changed of misalignment would give a negative impact to shaft rotation speed.

Designing and Manufacturing of Meat Grinding and Meatball Dough Blending Machine Romiyadi Romiyadi; Indah Purnama Putri
Jurnal Teknik Mesin (JTM) Vol 7, No 1 (2017)
Publisher : LP2M - Institut Teknologi Padang

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The purpose of the study was to design and manufacture of meat grinding and meatball dough blending machine with a capacity of 6 kg. In this study, researchers add more functions on meat grinding to meatball dough blending machine. From the process of designing and manufacturing, has produced a meat grinding and meatball dough blending machine with a capacity of 6 kg for a process. The machine uses a electric motor with a power of 0.25 HP. Based on the test results, meat grinding and meatball dough blending machine was able to meat grinding and meat ball dough blending and has efficiency of 96 % for the meat grinding process and 95 % for the meatball dough blending process.

Pengaruh Kemiringan Benda Kerja dan Kecepatan Pemakanan terhadapGetaran Mesin Frais Universal Knuth UFM 2 Romiyadi Romiyadi
JURNAL MECHANICAL Vol 7, No 2 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mech.v7.i2.201609

In milling process with slope of workpiece, the milling process requires more energy from milling machine. The greater the slope of workpiece estimated to be the greater energyrequired by the milling machine. Therefore, the machining vibration that occurs was estimated to be very big. This study aimed to determine influence theslope of workpiece to machining vibration in milling machine with variations of feeding. This study used Milling Machine Knuth Universal UFM 2 with vertical milling approach. The slope of workpiece used was 300, 450 and 600.The machining process parameters varied was feeding while depth of cut and spindle speed were constant. The study results show that the greater the slope of work piece, the greater the machining vibration on the up milling process and the down milling processes for all slope of work piece. Similarly the influence of feeding to machining vibration in milling process. The study results show that the change of feeding will give a positive impact to machining vibration on the up milling process and the down milling processes. For same the slope of workpiece and feeding the machining vibration on the down milling process is greater than the up milling process.

The Effect of Misalignment to Vibration, Electric Current and Shaft Rotation Speed on Gear Transmission Romiyadi Nawir; Yudi Dwianda; Adi Febrianton; Purnama Irwan
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 66 No 1 (2022): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Gear is a rotating machine that is widely used as a power transfer transmission in many industries. Gear has a long life times. However, the gears can be damaged due to many factors such as out of the maintenance, which one factor of misalignment. This study aim is to determine the effect of misalignment on the gear transmission to vibration, electric current and shaft rotation speed. In this study, was done alignment process with variations of misalignment on the gear transmission alignment kit and was done measurement value of vibration, electric current and shaft rotation speed. The study results show the greater the misalignment, the greater the vibration that occurs either radially or axially for all conditions measured. The shaft rotation was slower with the greater misalignment. The misalignment can affect the decrease in the rotation speed of the shaft. Therefore, it can reduce the efficiency for power transmission of engine.

The Effect of Misalignment to Vibration, Electric Current and Shaft Rotation Speed on The Coupling Transmision Romiyadi Romiyadi; Purnama Irwan
Jurnal Teknik Mesin Vol 10 No 2 (2020): Jurnal Teknik Mesin Vol.10 No.2 October 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Coupling is one of the components are widely used in various industries. Coupling is widely used as a power transfer transmission. Coupling have a long life time, it mean coupling was damage if out of the maintenance. The one factor is misalignment. This study aim to determine the effect of misalignment on the coupling transmission to vibration, electric current and shaft rotation speed. In this study, was done alignment process with variations of misalignment on the coupling transmission and was done measurement value of vibration, electric current and shaft rotation speed. The study results show that the changed of misalignment would give a positive impact to vibration and electric current. For the effect misalignment to shaft rotation speed, the study results show that the changed of misalignment would give a negative impact to shaft rotation speed.

Designing and Manufacturing of Meat Grinding and Meatball Dough Blending Machine Romiyadi; Indah Purnama Putri
Jurnal Teknik Mesin Vol 7 No 1 (2017): Jurnal Teknik Mesin Vol.7 No.1 April 2017
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2017.v7.i1.14-18

The purpose of the study was to design and manufacture of meat grinding and meatball dough blending machine with a capacity of 6 kg. In this study, researchers add more functions on meat grinding to meatball dough blending machine. From the process of designing and manufacturing, has produced a meat grinding and meatball dough blending machine with a capacity of 6 kg for a process. The machine uses a electric motor with a power of 0.25 HP. Based on the test results, meat grinding and meatball dough blending machine was able to meat grinding and meat ball dough blending and has efficiency of 96 % for the meat grinding process and 95 % for the meatball dough blending process.

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