122 research outputs found
Fabrikasi Lapisan Nano Fluorine Doped Tin Oxide (FTO) Dengan Variasi Temperature Menghasilkan Material Bersifat Transparan dan Konduktif
The process of forming a doped Tin oxide (FTO) nano fluoride layer was made using Tin Chloride (SNCL2) with Ammonium Fluoride (NH4F) mixing process using a magnetic stirrer at room temperature (28oC). The solvent liquid uses 99% ethanol. Both of these solutions are mixing and finally get the fluorinated doped fluorine Tin. The deposition method of the nanolayer uses the pyrolysis process to produce FTO substrates. This research focused on the production of materials that have transparent properties and have conductivity values. It based on the requirements of work solar cells to work. The process of measuring transparency uses an absorbance measurement tool. Measurement of conductivity using a conductivity meter with a 4-point circular Probe method used in this study was divided into four variations, including starting from 400, 425, 450, 475, 500 degrees Celsius. From this method, the best results were obtained at a temperature of 475 degrees Celsius with an average value of 25 Ω / cm and the highest percentage of transmittance
PENGEMBANGAN HUKUM ISLAM (FIQH) MELALUI PENDEKATAN MAQASID AL-SYARI’AH, KELEBIHAN DAN KEKURANGANNYA
This research is a literature study which tries to explore the concept of maqasid al-syariah. Basically, syari'at and religion cannot be understood partially. However, it must be viewed as a whole as an inseparable entity. Religious goals and shari'ah goals can be categorized into general goals and specific goals. The general objective in general is not different from all religious and insaniyyah teachings. Fiqh / fiqh proposal will be more relevant if it is based on socio-cultural context. In other terms, fiqh is an authority that can be accepted by all space and time. This can be realized if jurisprudence experts and all Muslims have a mindset that is open to other scientific fields which of course will be able to realize the condition of rahmatan li al alamin
Karakterisasi hasil quenching besi cor pada manufaktur roda gigi mesin tenun
The development of science and technology today has a significant influence on technological development and advances in the industrial world. Casting is a product manufacturing technique in which the metal is melted in a furnace and then poured into a mold cavity that is similar to the original form of the cast product to be made. One of the results or products produced from the casting method in this study is a weaving gear component. The gear serves as a short distance power transmission based on the rotation ratio from the main shaft to the drive shaft. This study purpose to determine the effect of the quenching process with oil cooling media on cast iron material. The testing results reveal that the composition test results in 3.18% carbon content, such that the components in this gear manufacturing are used in cast iron, which essentially has the characteristics of being heat-resistant and brittle. It is also necessary to use it as a way of producing materials feeling the continuous impact. The brittling effect of quenching oil heat treatment improves the quality of the materials. It is observed from the research findings that use the Vickers hardness test that the quenching heat treatment shows a substantial difference in score. The highest Vickers hardness test score with quenching oil materials achieving a score of 427.84 VHN is seen. The test exhibits the maximum value of 378.18 VHN in raw materials.Keywords: Cast iron, quenching, chemical composition, Vickers hardness
Performance Development Yamaha Jupiter Z1 Engine on Throtle Body, Muffler and Setting CO
Yamaha is one of the manufacturers that is concerned about motorsport, this is shown from the various production lines developed. This research focused on Jupiter Z1 Done by changing the manufacturer's standard work system, to improve its performance. This is because the vehicle when in standard conditions is a fuel and power efficient setting, the modifications made are for the stage towards the Roadrace motorcycle racing regulations. There are several regulations covering Mp1 to Mp5 and for mp5 regulations including changes to components that affect to spur motor power, changed components Analysis of Changes in Throttle Body Diameter, Mufler, CO Settings on Yamaha Jupiter Z1. to get maximum exhaust exhaust gas disposal, due to changes in several components that were changed and added, then from these problems made changes to standard data to comply with the Mp 5 roadrace racing regulations. component and data changes include Reamer Throttle body, aftermarket racing mufler replacement and CO (carbon monoxide) data settings. The result is an increase in Horsepower and Torque of 24.3% based on the Dynotest
ANALISIS KESIAPAN MAHASISWA PRODI PENDIDIKAN TEKNIK MESIN DALAM MELAKSANAKAN PROGRAM PENGALAMAN LAPANGAN TAHUN 2010
Masyarakat Indonesia merupakan masyarakat majemuk, yaitu
masyarakat yang terdiri atas berbagai suku, ras, agama dan aliran
kepercayaan. Pendidikan nasional yang dikembangkan khususnya pada
masyarakat serupa itu adalah pendidikan yang bercirikan pendidikan yang
mengakomodasi kepentingan masyarakat dari berbagai latar belakang yang
beraneka raga
UNJUK KINERJA PEMBANGKIT ENERGI ELEKTRIK MEMANFAATKAN LIMBAH PANAS MESIN MOBIL CITY CAR MENGGUNAKAN MODUL TERMO ELECTRIC COOLER (TEC)
Perkembangan teknologi untuk menghemat bahan bakar menjadi isu yang menarik dalam penelitian. Energy listrik masih menjadi kebutuhan primer pada system internal combustion engine. Ditinjau secara micro dalam penggunaan elektrikal diterapkan pada system pengapian mesin yang bersumber pada battery mobil. sistem elektrikal pada mobil bersumber pada alternator. Cara kerja alternator menggunakan pulley kopel putaran mesin alternator tersebut juga berdampak membebani putaran mesin. System elektrikal yang mampu menghemat bahan bakar mesin tersebut dapat kita temukan pada modul thermoelectric. terobosan baru sistem sumber energy listrik tersebut menggunakan modul Thermo Electric (TEC) proses konversi energi dengan memanfaatkan seaback effect . Thermo Electric (TEC) ketika dialiri panas pada salah satu sisinya maka akan terjadi proses perpindaan electron di dalam modulnya kemudian terciptalah aliran listrik. Besarnya energy listrik bergantung pada kecepatan pending sisi lawan permukaannya. Proses penurunan temperature dapat dibantu dengan menggunakan alat penukar kalor berupa heat exchanger sirip dan fin. semakin lama proses pendinginan, maka semakin optimal besaran nominal arus yang dihasilkan. Dari data Hasil pengujian dapat diketahui perangkat pembangkit energi tersebut mampu bekerja dengan rate orde satuan milivolt. Selanjuttya energy listrik tersebut dapat dimanfaatkan sebagai system penerangan kendaraan. Di era yang semakin maju ini, banyak sekali lampu LED yang hemat energy diaplikasikan pada mobil citycar yang hemat bahan baka
Desain, Manufaktur dan Uji Kinerja Mesin Pengolah Serbuk Jahe Merah
Design of the red ginger powder production machine aims to increase UMKM(Usaha Mikro Kecil dan Menengah) in the Yogyakarta area. By making a semiautomatic red ginger powder machine, it can increase production capacity and improve the economy for UMKM. Component design is divided into 3 processes, namely; designing the frame, designing the stirring shaft, and designing the cooking tank. There are first adjusted to the design that has been made using the solid works software which is then applied by assembling other components. The drive system on the powdered red ginger production machine uses an AC electric motor which is then forwarded into the v-belt transmission then the output from the transmission is forwarded to the stirring shaft
PENGAWETAN PRODUK UMKM SAMBEL MENGGUNAKAN METODE PENAHANAN PANAS DENGAN PARAMETER WAKTU
Perekonomian yang ada di Indonesia tidak bisa dipungkiri mengalami perkembangan yang sangat pesat karena peran usaha kecil menengah (UKM).[1]. Peran UMKM yaitu pemenuhan kebutuhan masyarakat akan sebuah produk unggul, Berdasarkan data dari Badan Pusat Statistik (BPS) merilis keadaan tersebut pasca krisis ekonomi terkait jumlah UMKM yang terus meningkat pertumbuhannya dari 85 juta hingga 107 juta tenaga kerja pada tahun 2012. Fenomena ini menjelaskan bahwa UMKM merupakan usaha yang produktif untuk dikembangkan secara makro dan mikro di Indonesia.[2] Ditengah banyaknya produk UMKM yang menggeliat muncul kendala yang perlu diteliti secara teknis menyangkut kualitas dan ketahanan mutu sebuah produk. Salahsatunya yang sangat signifikan yaitu masa kadaluarsa produk UMKM. dalam penelitian ini ditekankan pada produk UMKM sambel kemasan. Pendekatan yang dilakukan adalah mengetahui unsur unsur organik yang bersifat mengalami pembusukan, kadar air yang dikandung, pemanasan dengan metode heating rate yang sesuai dengan unsur organic yang ada. Diharapkan kandungan nutrisi dan citarasa tidak mengalami kerusakan dengan menetapkan skala pemanasan yang tepat. Dapat disimpulkan dari percobaan ini terdapat 3 variasi waktu. didapatkan lama waktu pemanasan terbaik selama 180menit dengan panas surface terukur melalui thermometer infrared 155 derajat celcius. Pada kapasitas produksi 10kg sambel mengalami perbedaan suhu antar permukaan pemanas dengan media sambel paling atas pada 85 derajat celcius. Sehingga delta dari panas yag diserap object adalah 70 derajat celcius
ANALISIS PERFORMA SISTEM PENDINGIN RAMAH LINGKUNGAN UNTUK KABIN MOBIL CITY CAR MENGGUNAKAN MODUL TERMO ELECTRIC COOLER TERHADAP KONSUMSI BAHAN BAKAR
Ramah lingkungan menjadi isu yang gencar dalam penelitian. Cloro Fluoro Carbon (CFC) yang digunakan dalam AC konvensional akan menguap ke udara bebas berdampak kerusakan lapisan ozon. Ditinjau secara micro dalam penggunaan sitem pendingin dapat diterapkan pada pendingin kabin mobil. System pendingin mobil konfensional menimbulkan 2 kerugian yaitu lebih boros bahan bakar karena couple pulley compressor AC membebani putaran mesin dan penggunaan CFC yang tidak ramah lingkungan.  System pendingin ramah lingkunagan dan mampu menghemat bahan bakar mesin tersebut dapat kita temukan pada modul thermoelectric. terobosan baru sistem pendingin tersebut menggunakan modul pendingin Thermo Electric Cooler (TEC) yang memanfaatkan sisi dingin pada Thermo Electric Cooler (TEC) dengan memanfaatkan seaback effect . Thermo Electric Cooler (TEC) ketika dialiri tegangan DC (arus searah) pada kedua jalur kabel penghubungnya maka salah satu sisi akan menjadi panas, sementara sisi satunya akan menjadi dingin. Salahsatu cara yang dapat ditempuh untuk memaksimalkan proses pendinginan, maka sisi panas Thermo Electric Cooler (TEC) harus diturunkan temperaturenya serendah mungkin mungkin dengan menggunakan alat penukar kalor heat sink serta dibantu kipas(fan). semakin lama proses pendinginan, maka semakin optimal suhu ruangan yang didinginkan. Dari data Hasil pengujian dapat diketahui perangkat pendingin tersebut mampu bekerja dengan rate penurunan temperature memadai. Selanjutnya dapat dapat diaplikasikan sebagai alat pendingin ruangan yang efektif, efisien dan ramah lingkungan.  Kata kunci: Kabin mobil, Air Conditioner (AC) konvensional, Cloro Fluoro Carbon (CFC), Thermo Electric Cooler (TEC), komponen sistem pendingin
Staging of endometrial carcinoma by magnetic resonance imaging: correlation with surgery and histopathology
OBJECTIVE: To evaluate the accuracy of MRI in staging of endometrial carcinoma, and comparison with surgery and histopathological findings.
METHODS: A one year prospective cross-sectional study was conducted from 10/3/2005 to 31/5/2006, at the Radiology department, Aga Khan University Hospital (AKUH) Karachi. Fifty two patients with diagnosis of endometrial carcinoma, referred to radiology department for preoperative staging by MRI and had undergone surgery were included.
RESULTS: MRI was found to be 79% sensitive, 85% specific and 80% accurate for staging endometrial carcinoma while PPV and NPV were 97% and 66% respectively.
CONCLUSION: Magnetic resonance imaging is a good, safe, accurate and non invasive imaging modality in staging of endometrial carcinoma. It can be used as a first line radiological investigation in patients with endometrial carcinoma for treatment planning
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