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All Journal Jurnal Veteriner Statistika Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Prosiding Semnastek Jurnal Ilmiah Mahasiswa Veteriner Panrita Abdi - Jurnal Pengabdian pada Masyarakat Pro Food Jurnal Pengabdian UntukMu NegeRI Jurnal Agribisnis Terpadu Cyberspace: Jurnal Pendidikan Teknologi Informasi Mesin Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Economac: Jurnal Ilmiah Ilmu Ekonomi Jurnal Hilirisasi IPTEKS (JHI) Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Al-Ahkam : Jurnal Hukum Pidana Islam Intervensi Komunitas: Jurnal Pengabdian Masyarakat PROFESSIONAL HEALTH JOURNAL Jurnal Agroekoteknologi dan Agribisnis JITU (Jurnal Ilmiah Teknik Unida) The International Journal of Tropical Veterinary and Biomedical Research Siyasah Wa Qanuniyah: Jurnal Ilmiah Ma'had Aly Raudhatul Ma'arif Jurnal Medika Veterinaria Jurnal Ilmiah Mahasiswa Pendidikan Ekonomi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam

Nazaruddin Nazaruddin

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STUDI HISTOLOGIS LAMBUNG SAPI ACEH. (Histological Study of Gastric in Aceh Cattle). roza Agravion; Dian Masyitha; Zainuddin Zainuddin; M Jalaluddin; Nazaruddin Nazaruddin; Arman Sayuti
JURNAL ILMIAH MAHASISWA VETERINER Vol 2, No 3 (2018): MEI - JULI
Publisher : JURNAL ILMIAH MAHASISWA VETERINER

Telah dilakukan penelitian tentang struktur histologi lambung (rumen, retikulum, omasum, dan abomasum) sapi aceh. Penelitian ini bertujuan mengetahui struktur histologi lambung sapi aceh. Sampel penelitian diambil dari 3 ekor sapi aceh berjenis kelamin jantan, telah dewasa kelamin yang dipotong di Rumah Potong Hewan di Aceh Besar. Terhadap sampel penelitian dilakukan proses mikroteknik untuk selanjutnya dilakukan pewarnaan Hematoksilin-eosin (HE). Pengamatan terhadap struktur histologi menggunakan mikroskop cahaya binokuler. Berdasarkan hasil penelitian, dapat disimpulkan bahwa struktur histologi lambung sapi aceh tidak berbeda dengan struktur histologi lambung ruminansia lainnya (sapi, domba, dan kambing), yaitu terdiri dari empat lapisan, tunika mukosa, tunika submukosa, tunika muskularis, dan tunika serosa. Lamina propria rumen menyatu dengan submukosa membentuk propria-submukosa dan terdapatnya kapiler fenestrated dibawah membran basal. Ciri khas dari retikulum sapi aceh terdapat pada lamina muskularis mukosa yang membentuk lipatan memanjang. Tunika mukosa abomasum terdapatnya kelenjar yaitu kelenjar kardia, fundus, dan pilorus.(A Study to detect the microscopic structure of gastric (rumen, reticulum, omasum, and abomasum) in aceh cattle. The purpose of this research was to know the histological structure of the gastric in aceh cattle. The samples were collected from 3 of male aceh cattle in Aceh Besar abattoir. The tissue samples were processed by microtechnique and Hematoksilin-eosin (HE). Microscopic analysis was performed using binocular light microscope. The study showed that the wall of gastric aceh cattle not different with another ruminasia (cow, sheep, and goat), they are made up of four layers, that was tunica mucosa, submucosa, muscularis, and serosa. The mucosa segment there are lamina epithelia, lamina propria, and lamina mucosa muscularis. At rumen, lamina propria merges to submucosa created submucosa-propria and founded fenestrated capiler under epithelium basal membran. The characterstic of reticulum based on mucosa muscularis which is create fold lengthwise. Mucosa of abomasum founded some glands, there are cardiac, fundic, and pyloric).

Histopatologi Ginjal Tikus Putih (Rattus norvegicus) setelah Implan Wire Material Logam (Histopathology Of Rats (Rattus norvegicus) Kidney after Metal Material Wire Implantation Tridian Novia Gelis; Erwin Erwin; Nazaruddin Nazaruddin; Zainuddin Zainuddin; Muttaqien Muttaqien
JURNAL ILMIAH MAHASISWA VETERINER Vol 4, No 4 (2020): AGUSTUS-OKTOBER
Publisher : JURNAL ILMIAH MAHASISWA VETERINER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/jim vet..v4i4.15716

ABSTRAKGinjal merupakan organ yang mempunyai peranan penting dalam tubuh untuk membuang sisa dari metabolisme dan toksikan tubuh melalui urin. Penelitian ini bertujuan untuk mengetahui gambaran histopatologi jaringan ginjal tikus putih (Rattus norvegicus) setelah implan wire material logam stainlees steel 316L dan wire stainless steel alternatif alat pancing pada tulang femur. Sepuluh ekor tikus putih jantan dibagi 2 kelompok perlakuan, masing-masing kelompok terdiri dari 5 ekor. Kelompok I (K-I) diimplan menggunakan wire stainlees steel 316L dan kelompok II (K-II) diimplan menggunakan wire stainless steel alternatif alat pancing. Organ ginjal dikoleksi pada hari ke-86 setelah implantasi. Pemeriksaan histopatologi ginjal dilakukan dengan pewarnaan hematoksilin-eosin (HE). Hasil pengamatan histopatologi diskoring dan dianalisis menggunakan uji T dengan perangkat lunak SPSS (Statistic Program For Social Science) 22. Hasil pengamatan berupa hiperemi, hemoragi, nekrosis dan sel-sel inflamasi dengan perubahan yang tidak signifikan (P0,05) antara kedua kelompok perlakuan. Disimpulkan bahwa tidak terdapat perbedaaan gambaran histopatologi ginjal tikus yang diimpalan wire stainless steel 316L dan wire stainless steel alternatif alat pancing.Kata kunci : Ginjal, histopatologi, implan, logam, wireABSTRACTKidney is an organ that has an important role in the body to remove the rest of the body's metabolism and toxins through urine. This study aims to determine the histopathological picture of kidney tissue in white rats (Rattus norvegicus) after implantation of 316L stainless steel metal wire and alternative stainless steel wire for fishing line on the femur bone. Ten male rats were divided into 2 treatment groups, each group consisting of 5 tails. Group I (K-I) was implanted using 316L stainless steel wire and group II (K-II) was implanted using an alternative stainless steel wire for fishing line. Kidney organs were collected on 86 th day after implantation. Histopathological examination of the kidneys is carried out by hematoxylin-eosin (HE) staining. Histopatologi observation results were scored and analyzed using T test with SPSS (Statistical Program For Social Science) 22 software. The results showed the occurrence of hyperemia, hemorrhage, necrosis and inflammatory cells with insignificant changes (P 0.05) between the two treatment groups. It was concluded that there was no difference in the histopathological picture of rat kidneys implanted by 316L stainless steel wire and alternative stainless steel wire fishing line.Keywords: histopayhology, kidney, wire, implant, metal

GAMBARAN HISTOPATOLOGIS LIMPA JANTAN IKAN MUJAIR (Oreochromis mossambicus) YANG TERPAPAR MERKURI KLORIDA (HgCl2) Muzdalifah Mariska; Nazaruddin Nazaruddin; T Armansyah TR
JURNAL ILMIAH MAHASISWA VETERINER Vol 4, No 1 (2019): NOVEMBER-JANUARI
Publisher : JURNAL ILMIAH MAHASISWA VETERINER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/jim vet..v4i1.4842

ABSTRAK Penelitian ini bertujuan mengetahui efek paparan merkuri klorida (HgCl2) terhadap gambaran histopatologis limpa ikan mujair. Penelitian ini merupakan penelitian eksperimental dengan rancangan acak lengkap (RAL) faktorial yang menggunakan 36 ekor ikan mujair yang dikelompokkan ke dalam 4 kelompok perlakuan, yaitu kelompok kontrol (P0) kelompok yang tidak diberikan paparan merkuri dan kelompok perlakuan P1, P2, dan P3 yang diberikan paparan merkuri dengan konsentrasi masing-masing 0,25; 0,50; dan 0,75 ppm per 100 liter air, masing-masing kelompok terdiri atas 9 ekor ikan. Pengambilan sampel dilakukan pada hari ke-10, 20, dan 30 untuk dibuat preparat histopatologis. Data yang diperoleh dianalisis secara statistik dan deskriptif. Hasil penelitian menunjukkan bahwa gambaran histopatologis limpa mengalami perubahan berupa meningkatnya jumlah melanomakrofag centres (MMC), nekrosis, vakuolisasi, edema, dan pada hari ke-30 setelah pemaparan ditemukan proliferasi jaringan ikat. Jumlah MMC pada hari ke-10 masing-masing kelompok perlakuan 15,00±5,57; 85,67±14,98; 110,67±16,68; 160,33±16,77, pada hari ke-20 masing-masing kelompok perlakuan 22,00±7; 116,67±14,47; 114±6,24; 134,33±16,50; dan pada hari ke-30 masing-masing kelompok perlakuan 20,00±4,36; 121,33±15,04; 133,33±14,47; 142,00±34,22. Hasil analisis statistik menunjukkan bahwa konsentrasi HgCl2 berpengaruh nyata (P0,05) terhadap jumlah MMC limpa ikan mujair, namun lama paparan dan interaksi tidak menunjukkan pengaruh yang nyata (P0,05). Disimpulkan bahwa paparan HgCl2 pada ikan mujair menyebabkan perubahan gambaran histopatologis limpa yang ditandai dengan meningkatnya jumlah MMC, nekrosis, vakuolisasi, edema, dan proliferasi jaringan ikat.ABSTRACT This study aimed to determine the effect of mercury chloride (HgCl2) exposure on histopathologic of spleen tilapia fish. This research was an experimental study using Completely Randomized Design factorial pattern used 36 tilapia fish grouped into 4 treatment groups, control (P0) was without exposed by mercury and treatment group P1, P2, and P3 exposed by mercury with a concentration of 0.25; 0.50; and 0.75 ppm per 100 liters of water, each group contained 9 fish. Sampling was conducted on 10, 20, and 30 days then proceed to histopathology preparations. The data obtained were analyzed statistically and descriptively. The results showed that histopathologic of spleen reveated the increasing number of melanomakrofag centres (MMC), necrosis, vacuolation, oedema, and proliferation of connective tissue on the 30th day. The number of MMC on day 10 of each treatment group was 15,00±5.57; 85.67±14.98; 110.67±16.6;, 160.33±16.77; on day 20 of each treatment group was 22,00±7; 116.67±14.47; 114±6.24; 134.33±16.50; and on day 30 of each treatment group was 20,00±4.36; 121.33±15.04; 133.33±14.47; 142,00±34.22. The result of analysis of variance (anava) factorial with 95% confidence level showed that HgCl2 concentration significantly (P0.05) to MMC in spleen of mujair fish, but long exposure and interaction did not show significant effect (P0.05). In conclusion, HgCl2 exposure in tilapia fish causes spleen damage characterized by the increase number of MMC, necrosis, vacuolation, oedema, and proliferation of connective tissue.

PENGARUH JUMLAH MIKROFILARIA PADA ANJING PENDERITA Canine Heartworm Diseases TERHADAP ANGKA KEMATIAN NYAMUK Aedes aegypti ISOLAT LAPANG (The Effect Of Microfilirae Amount On Dogs With Canine Heartworm Diseases On The Mortality Rate Of Aedes Aegypti Field Isolate) dzulfikar faizin romas; T. Fadrial Karmil; M Hanafiah; Winaruddin Winaruddin; M Hambal; Muttaqien Muttaqien; Nazaruddin Nazaruddin
JURNAL ILMIAH MAHASISWA VETERINER Vol 5, No 4 (2021): AGUSTUS-OKTOBER
Publisher : JURNAL ILMIAH MAHASISWA VETERINER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/jim vet..v5i4.9376

Penelitian ini bertujuan mengetahui pengaruh jumlah mikrofilaria pada anjing penderita Canine Heartworm Diseases terhadap angka kematian nyamuk Ae. aegypti. Sampel yang digunakan adalah seribu dua ratus ekor nyamuk dengan lima kali ulangan dan tiga ekor anjing dengan kategori infeksi mikrofilaremik tinggi 10.395 mf/ml, sedang 1.430 mf/ml, dan ringan 330 mf/ml serta satu anjing kontrol 0 mf/ml positif. Anjing di kandangkan dengan nyamuk, ketika nyamuk selesai menghisap kemudian dikoleksi dan diamati selama 13 hari. Data angka kematian nyamuk Ae aegypti akan dianalisis, secara statistik untuk melihat standart deviasi, dipastikan dengan uji ANOVA SPSS, Rancangan Acak Lengkap (RAL), dan disajikan dalam bentuk grafik. Hasil penelitian menunjukan angka kematian pada perlakuan nyamuk kontrol 0 mf/ml dengan rata-rata 0.68±0.94. Sedangkan angka kematian nyamuk pada perlakuan di hari pertama pengamatan rata-rata angka kematian nyamuk pada tingkat rendah 330 mf/ml sebanyak 12.00±0.75, sedang 22.00±0.75, dan tinggi 34.00±0.9, angka kematian mulai meningkat kembali di hari ketiga, pada tingkat rendah 330 mf/ml 9.87±0.87, sedang 13.85±1.24, tinggi 16.84±1.83. Angka kematian kembali meningkat pada hari ke sepuluh dengan rata-rata rendah 15.97±9.65, sedang 31.37±2.77, tinggi 40.22±5.95. Hasil ANOVA pada pengamatan hari ke 13, nilai p dari perlakuan adalah 0.000 (p 0.05), maka dari itu kita menolak H0. Kesimpulan semakin tinggi tingkat infeksi, semakin tinggi angka kematian nyamuk sehingga nyamuk Ae. aegypti dengan tingkat infeksi yang rendah bisa menjadi potensial vektor.(This study aimed to know the effect of the amount of microfilariae on dogs with Canine Heartworm Diseases on the mortality rate of mosquitoes Aedes Aegypti. The sample used was one thousand two hundred mosquitoes with five repeatations and three dogs with a high category of microfilaremic infection 10,395 mf / ml, moderate 1,430 mf / ml, and low 330 mf / ml and one control dog 0 mf / ml positive. The dog was caged up with mosquitoes, when the mosquitoes had finished sucking then it was collected and observed for thirteen days. The mortality rate of Ae aegypti mosquito was analyzed, statistically looked at the standard deviation, confirmed by the ANOVA SPSS Complete Random Design test, and presented in graphical form. The results showed that the mortality rate in controlled mosquito treatment 0 mf / ml was 0.68±0.94. While the mortality rate of mosquitoes in the treatment on the first day of observing the average mosquitoes mortality rate at the low level of 330 mf / ml was as much as 12.00 ± 0.75, moderate 22.00 ± 0.75, and a high of 34.00 ± 0.9, the mortality rate began increasing again on the third day, at the low level 330 mf / ml 9.87 ± 0.87, medium 13.85 ± 1.24, high 16.84 ± 1.83. The death rate again increased on the tenth day with the low average of 15.97 ± 9.65, moderate 31.37 ± 2.77, high 40.22 ± 5.95. Based on ANOVA results, the p value of the treatment was 0.000 (0.05), therefore we rejected H0. The higher the infection rate, the higher the mosquitoes mortality rate so that the mosquiotoes Ae Aegypti with the low infection rate with the fewest average number of mortality rate can be a potential vector).

EFEKTIVITAS SALEP GETAH JARAK PAGAR (Jatropha curcas, Linn) PADA FASE EPITELISASI PENYEMBUHAN LUKA SAYAT MENCIT (Mus musculus) fauzy fauzy; M Nur Salim; Nazaruddin Nazaruddin
JURNAL ILMIAH MAHASISWA VETERINER Vol 1, No 3 (2017): MEI - JULI
Publisher : JURNAL ILMIAH MAHASISWA VETERINER

ABSTRAK Penelitian ini bertujuan untuk mengetahui tingkat efektivitas pemberian salep getah jarak pagar 10% (Jatropha curcas, Linn) pada fase epitelisasi penyembuhan luka sayat kulit mencit (Mus muskulus). Penelitian menggunakan rancangan acak lengkap (RAL) dengan tiga kelompok perlakuan dan tiga kali ulangan. Digunakan 9 ekor mencit jantan, dengan berat badan 30-40 gram diadaptasikan selama 7 hari di dalam kandang percobaan dengan pemberian pakan komersil dan minum secara ad libitum. Pembuatan luka sayat pada daerah punggung sepanjang 2 cm sampai subcutan. Setelah perlakuan dilakukan perawatan luka pada pukul 08.00 dan 18.00 WIB. Pada kelompok kontrol (KI) dioleskan vaselin kuning, kelompok perlakuan (KII) dioleskan salep getah jarak pagar 10% dan pada kelompok perlakuan (KIII) dioleskan gentamisin 0,1%. Sampel kulit diambil pada hari ke-8 dan diamati secara histopatolgi. Rata-rata jumlah fibroblas pada K1, K2, dan K3 adalah 80,33±2,52, 435,00±7,00, dan 247,67±4,04. Hasil uji ANAVA menunjukkan ada pengaruh yang sangat nyata (P0,01) antara KI, KII, dan KIII. Dapat disimpulkan bahwa salep getah jarak pagar 10% memiliki potensi mempercepat fase epitelisasi penyembuhan luka sayat pada kulit mencit. Kata Kunci : Getah jarak pagar, Jatropha curcas, Linn., Luka sayat.

Studi Histologis Usus Besar Sapi Aceh (Histological Study of Large Intestine of Aceh Cattle) resti aulia putri; Dian Masyitha; zainuddin zainuddin; fitriani Fitriani; Nazaruddin Nazaruddin; Fadli A Gani; Ummu Balqis
JURNAL ILMIAH MAHASISWA VETERINER Vol 3, No 2 (2019): FEBRUARI-APRIL
Publisher : JURNAL ILMIAH MAHASISWA VETERINER

ABSTRAKSapi aceh merupakan rumpun sapi asli Indonesia yang mempunyai keseragaman bentuk, fisik, dan komposisi genetik serta kemampuan adaptasi dengan baik pada keterbatasan lingkungan, sehingga perlu dilindungi, dilestarikan, dan dikembangkan keunggulannya. Penelitian ini bertujuan untuk mengetahui struktur histologis usus besar sapi aceh. Sampel penelitian diambil dari tiga ekor sapi aceh yang telah dewasa kelamin dan berjenis kelamin jantan yang dipotong di Rumah Potong Hewan Lambaro, Aceh Besar. Terhadap sampel penelitian dilakukan proses mikroteknik untuk selanjutnya dilakukan pewarnaan Hematoksilin-Eosin (HE). Pengamatan terhadap struktur histologi menggunakan mikroskop. Hasil penelitian menunjukkan struktur histologi sekum, kolon, dan rektum sapi aceh tersusun atas empat lapisan, yaitu tunika mukosa, submukosa, muskularis, dan serosa. Tunika mukosa sekum, kolon, dan rektum tersusun oleh epitel silindris selapis, sel Goblet, kelenjar Lieberkuhn, limfosit, jaringan ikat longgar, fibroblas, dan otot polos. Ketebalan mukosa sekum yaitu (419±12 µm), kolon (749±13 µm), dan rektum (1308±10 µm). Tunika submukosa terdiri dari jaringan ikat longgar, fibroblas, sel lemak, pembuluh darah dan nodus limfatikus dengan ketebalan sekum (943±13 µm), kolon (744±10 µm), dan rektum (2076±10 µm). Tunika muskularis tersusun oleh otot polos transversal dan longitudinal, plexus saraf mientericus, dan jaringan ikat, dengan ketebalan masing masing yaitu sekum (2579±19 µm), kolon (2380±16 µm), dan rektum (4748±19 µm). Tunika serosa merupakan lapisan paling luar dari usus besar yang terdiri dari sel lemak, pembuluh darah, dan jaringan ikat dengan ketebalan sekum (1621±13 µm), kolon (331±18 µm), dan rektum (1639±9 µm). Dapat disimpulkan, bahwa struktur histologi sekum, kolon, dan rektum sapi aceh memiliki lapisan yang sama, namun memiliki ketebalan yang berbeda pada tiap lapisan, ketebalan lapisan berhubungan dengan fungsi dan letak dari usus besar, dimana rektum memiliki ketebalan lapisan yang lebih tebal dibandingkan sekum, dan kolon.Kata kunci : Histologi, usus besar, sapi acehABSTRACT Aceh cattles were the pure bred Indonesian cattle that have uniformity in shape, physical and genetic composition and good adaptability to environmental limitations, so they need to be protected, preserved and developed. The aims of this research was to study the histological structure of the large intestine in aceh cattle. The samples were collected from three male aceh cattle in Lambaro abbatoir, Aceh Besar. The samples were processed by microtechnique and Hematoksilin-eosin dyning. Microscopic analysis was performed using binocular microscope. The results showed that the histological structure of cecum, colon, and rectum of the aceh cattle was composed of four layers, which were tunica mucosa, submucosa, muscularis, and serosa. The mucosa of cecum, colon, and rectum is composed of ephitelium simple columnar cell, Goblet cell, Lieberkuhn gland, connective tissue, fibroblast, and smooth muscles. The mucosal thickness of cecum was (419± 12μm), colon (749±13 μm), and rectum (1308±10 μm). The submucosal tunica was composed of connective tissue, fibroblast, adipose cells, blood vecells, and lymph nodes. The submucosal thickness of cecum was (943±13 μm), colon (744±10 μm), and rectum (2076±10 μm). The muscularis tunica was composed of transversal and longitudinal smooth muscles, mientericus nerve plexus and connective tissue, the muscularis thickness of cecum was (2570±19 μm), colon (2380±16μm), and rectum (4748±19 μm). Tunica serous was composed of adipose cells, blood vecell, and connective tissue. The serous thickness of cecum was (1621±13 μm), colon (331±18 μm), and rectum (1639±9 μm). It can be concluded that the histological structure of the cecum, colon, and rectum had the same layer, but different in thicknesses of each layer, the thickness of the intestinal layer is related to the function and location of the large intestine, which the rectum has the thicker layer than the cecum and colon.Keyword: Histology, large intestine, aceh cattle

Perancangan Suspensi Depan Prototipe Campagna T-Rex Car Febrian Febrian; Nazaruddin Nazaruddin; Syafri Syafri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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In designing a safe car while driving, there are many factors to watch out for, such as the suspension system design. In this research, the design of suspension is limited only to discuss the vehicle front suspension. The suspension design process starts from the selection of suspension type, followed by kinematic simulation using Suspension Analyzer v-2.4 software, and stress analysis simulation using Autodesk Inventor software when the vehicle is in braking and turning condition. The result of kinematic simulation of front suspension using Suspension Analyzer v-2.4 was found the change of camber wheel angle by -0.38o when maximum bump (30 mm) and 0.22o when maximum rebound (-30 mm). And the results of static analysis of front suspension components using Autodesk Inventor obtained minimum safety factor value of 1.96 in braking conditions and 1.58 in turn conditions. It was concluded that the front suspension system was still within safe limits.Keyword : suspension, static analysis, kinematic analysis, safety factor

Perancangan Bodi Mobil Hemat Energi Tipe Urban Bono Kampar Yudi Saputra; Nazaruddin Nazaruddin; Syafri Syafri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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When designing a car, it is very important to pay attention to the construction and design of the vehicle. This is useful for getting the security and comfort of users in driving a car. In this study, car body design must have the smallest drag coefficient possible. if the vehicle has a large drag coefficient value, it has a large influence on the efficiency or performance of the vehicle, especially in cars with a large Cd value that will greatly affect vehicle speed. This is useful for minimizing the fuel used, and allows the vehicle to reduce the friction forces caused by air while driving. To get drag coefficients, Computational Fluid Dynamic (CFD) software is used. The software used is Solidworks Flow Simulation. From the results of aerodynamic simulations on four alternative car bodies carried out in this study, the smallest Cd (Coefficient Drag) is the second car body model, which has a Drag Coefficient (Cd) = 0.21Keywords: Car, Aerodynamics, Vehicle Dynamics, Drag Coefficient

Perancangan Dan Pembuatan Komponen Mesin Pembuat Bakso Menggunakan Screw Conveyor Dengan Pemotongan Bakso Secara Mekanik Jon Aristo; Nazaruddin Nazaruddin; Dedi Rosa Putra Cupu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Various efforts have been made to develop the efficiency of time and effort on making meatballs, including this machine a good time efficiency in making meatballs in which the meatball machine forms meatballs of 250 to 280 meatballs / minute. The principle working of this machine is iguite simple where the meatball dough will be input into the dough container and processed by a screw conveyor, when the meatball dough has pressure due to screw conveyor, the meatball dough will be forwarded to the meatball printing dies, and after the dough through the dies meatball printer, meatball will be cut by two plates that move horizontally, the cut meatballs will fall into a tub of boiled meatballs due to the gravitational force. The dimensions of the screw used in this machine a size diameter of 65 mm with a screw shaft diameter of 25.4 mm. With the dies thickness used, which is 25.5 mm, it can accept the load distributed from the screw so that the dimensions of dies used can be declared safe. With the rotational speed of the dies pulley used the same as the cutting speed of the meatballs so that the distance between the pulley dies and the meatball cutting pulleys is 150 mm with the belting size A-24 with a tensioner as far as 26.9 mm. The hand hand cutting angle will affect the distance of the blade where this angle is 43o Keywords: Dies, Screw Conveyors, Tensioners, Blades

Kaji Numerik Pengaruh Bio-Based Lubricant Terhadap Ketebalan Lapisan Film Dan Tekanan Elastohydrodynamic Pada Cylindrical Roller Bearing Menggunakan Metode Beda Hingga Adibyathul Fikri Januar; Dedi Rosa Putra Cupu; Nazaruddin Nazaruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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In this research, numerical study are used to examine the effect of bio-based lubricants, i.e. coconut oil, olive oil, and palm oil as lubricants in the application of roller element bearings, or called elastohydrodynamic lubrication (EHL), especially in contact with the inner ring with cylindrical roller elements. This simulation applies the finite difference method to solve the Reynolds equation and the pressure-viscosity equation to analyze the EHL pressure and the thickness of the film layer formed. The results show that olive oil is the right choice in replacing mineral oil in the application of roller bearings. By providing variations in load and speed, olive oil shows the results of low pressure spikes or no pressure spikes during the simulation process. However, in general coconut oil and palm oil can replace mineral oil as a function of lubrication. As a comparison purpose, mineral oil (P150N) is used to see the difference that occurs in the EHL pressure and the thickness of the film layer formed. Keywords: elastohydrodynamic lubrication, film thickness, bio-based lubricant

Co-Authors . Darniati . Zulfan A. I Mahyuddin Abdullah Hamzah Abdurrazak Abdurrazak Adibyathul Fikri Januar Afrian Afrian Ajirni Ajirni Alim Misbullah Amalia Sutriana Aminuddin Aminuddin Aminuyati Amir Mukhlis Amiruddin . Amiruddin Amiruddin Anak Agung Istri Sri Wiadnyani Anang Suhandi Angga Islam Darmawan Anisa Purnamasari Ansar Ansar Ansar Ansar ANSAR Anwarudin, Oeng Arman Sayuti Asri Rizky Asri Rizky Azis, Atri Dewi Baiq Rien Handayani, Baiq Rien Cece Indriani Chaliddin Chaliddin Cupu, Dedi Rosa Putra Cut Dian Fitri Dedy Masnur, Dedy Devi Dianti Dewi Indriyani Roslim Dian Masyitha divina dinda hayati Dody Handito dzulfikar faizin romas Eka Safitri Ermaini Ermaini Erwin Erwin Etriwati E Fadli A Gani Fauzy Fauzy Feblil Huda Febrian Febrian Fitri Oviyanti Fitriani Fitriani Fridarti, Fridarti Gusriady Syahputra Herisiswanto Herisiswanto Hirpatul Laeli Ilham Maulana Imtihan Imtihan Inayatillah Inayatillah Irma Anggraini Islami, Syaifuddin J Samudra Jon Aristo Jufri Yahya Khairi Suhud KIKI GUNAWAN Kurnia Intan Pratiiwi Lazim N Lazim N Lehet Rikardo Pandiangan Lelifajri Lelifajri Lisnawati Lisnawati M Bur M Hambal M Hanafiah M Jalaluddin M Nur Salim M Nur Salim M. Abbas Zaini Meimuharani Meimuharani MIFTAHUL JANNAH Mikha Febryaan Tambunan Mirna Safrani Fauzi moegiratul amaro Muhammad Ikhsan Muhammad Isa Muhammad Nur Salim Muhammad Triyono Mulyadi Adam Munawar Khalil Musfiana Musfiana Mutia Devi Ariyana Muttaqien Muttaqien Muzdalifah Mariska Nayla Desviona Novia Rahayu Nurdiniyah Nurdiniyah Nuzul Asmilia Rahmadi Rahmadi Rasudin Rasudin Razali Daud resti aulia putri Rinaldi Idroes Rochman Saefudin Romy Romy roza Agravion Roza Elvyra Rudi Ansori Ruhamah Ruhamah Rusli Rusli Sabrina Sabrina Salsabila, Unik Hanifah Sari Arie Lestari Siska Cicilia Siti Aisyah Siti Aisyiah Siti Mariyam Siti Sarah Marnianti Sri Mulyani Sri Widyastuti Sugito Sugito Supriadi Supriadi Supriatno Supriatno Syafri Syafri Syafrizal Syafrizal Syamsiar, Syamsiar T Armansyah TR T. Fadrial Karmil Teguh Iman Tridian Novia Gelis Ummu Balqis Wa Ode Nova Noviyanti Widiyastuti Widiyastuti Wiharyani Werdiningsih Willy Hartino Siregar Winaruddin Winaruddin Wiwik Oktarina Yefrizal Yefrizal Yudha Fahrimal Yudi Saputra Zahalim Zahalim Zainuddin Zainuddin zairul Antosa Zuhrawati NA Zuhrawati Zuhrawati Zul Fanji Zuraidawati Zuraidawati

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