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Mahmudi .
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KAJIAN TENTANG PROSES ELEKTROLISIS PADA ELEKTROPLATING KROM ., Mahmudi
Sainstek Vol 4, No 2, 2009
Publisher : Sainstek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (40.577 KB)

Abstract

Elektroplating krom adalah pelapisan suatu logam dengan mengunakan logam pelapis krom. Proses yang terjadi pada elektroplating adalah elektrolisis. Elektrolisis adalah suatu proses dimana reaksi kimia terjadi pada elektroda yang tercelup pada larutan elektrolit ketika sumber tegangan arus searah diterapkan terhadap elektroda yang ada dalam sel elektrokimia. Kondisi elektroplating yang sesuai akan menghasilkan pelapisan yang sempurna. Hal ini dikarenakan pada proses pelapisan logam yang diharapkan adalah hasil pelapisan yang merata, kuat tidak mudah retak, butirannya halus dan warnanya cerah. Oleh karena itu perlu diperhatikan faktor-faktor yang mempengaruhi hasil elektroplating, dan pemahaman tentang elektrolisis pada elektroplating baik tentang teori dasarnya, reaksi-reaksi yang terjadi, dan komponen-komponen yang diperlukan.
PEMIKIRAN ULAMA HANAFIYAH TENTANG PEMANFAATAN BARANG GADAI Mahmudi .
Maliyah : Jurnal Hukum Bisnis Islam Vol. 3 No. 1 (2013): Juni 2013
Publisher : Islamic Economic Law Programs, Faculty of Sharia and Law State Islamic University (UIN) of Sunan Ampel Surabaya.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.627 KB) | DOI: 10.15642/maliyah.2013.3.1.%p

Abstract

Basically, this mortgage is done because of the urgent need for all so difficult when lending to others without giving credence goods as a collateral loan. According to scholars Hana>fiyah recipient lawful liens not take any benefit from pawning goods in any way, although there is consent of the owner, since such means as to permit usury, because the debt will be given full pay, then that means the excess benefit. So because of these advantages there are usury laws. And Ulama Hana>fiyah stated that lien is considered perfect if the goods are pawned it was legally pawn in the hands of the receiver, and the money needed has been received by the pledgor. Lien perfection by scholars Hana>fiyah referred to as al-qabd} al-marhu>n the collateral held by law, if the guarantee had been controlled by creditors then rahn contract that binds both parties
Tantangan dan Peluang Pemerintah Daerah dalam Penanggulangan Kemiskinan Fadel Muhammad; Mahmudi .
Unisia No. 59: Tahun XXIX Triwulan I 2006
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/unisia.vol29.iss59.art7

Abstract

The problem of poverty and unemployment become tremendous challenge to be solved by local government in this autonomy and fiscal decentralization era. Through local autonomy and decentralization, there are obviously greater opportunities to localize the problem of poverty and to take action based on local condition and local contingency factors. Poverty alleviation program initiated by local government should be oriented to be more humanistic with dignity approach, that is taking people in poor as a subject to be enhanced and entrusted to be able to escape from their poverty problem. Through the concept of self-help community, the problem of poverty can be eradicated more effective. The big challenge faced by local government concerning to the poverty alleviation program is to develop strong political and economic democration in a local context. There are at least six pillars that need deep attention to be improved and enhanced, i.e. education, people income, health, regulation and law enforcement, public service infrastructure, and institutional building.
PENENTUAN WAKTU MATI MEMANFAATKAN DERET HOMOLOG ALKILPARABEN PADA RP-HPLC DALAM SISTEM PELARUT METANOL/AIR Mahmudi .; Saiful .; Khairan .; Rinaldi Idroes
Jurnal Natural Volume 15, Number 2, September 2015
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (203.052 KB)

Abstract

Penelitian ini dalam rangka pengembangan dan aplikasi metode penentuan waktu mati (t0) pada Kromatografi Cair dari yang telah pernah dan berhasil diterapkan di GC. Waktu mati merupakan parameter yang sangat penting untuk penentuan parameter lain seperti Faktor kapasitas (k’), retensi relative (tR’) dan indeks retensi kovats (IR), sehingga didapat hasil berupa data base yang bisa diterapkan dalam intrumentasi GC dan RP-HPLC. Penentuan waktu mati dengan menggunakan dua metode yaitu metode iterasi dan metode linearisasi, sehingga didapat nilai indeks retensi kovats dari senyawa uji pada sistem RP-HPLC dengan menggunakan deret homolog alkilparaben. Hasil penelitian menunjukkan deret homolog alkilparaban terbukti dapat digunakan untuk penentuan indeks retensi Kovats  dalam RP-HPLC dengan koefisien korelasi yang sangat baik  terutama pada sistem pelarut MeHO/H2O (90:10). 
Co-Authors Fadel Muhammad Khairan . Rinaldi Idroes Saiful . Saiful Saiful