PROGRESS OF RESEARCH ON WAX REMOVAL DURING PIGGING OF OIL PIPELINE

Progress of research on wax removal during pigging of oil pipeline

Wax deposition is a severe flow color block iphone case assurance challenge for waxy crude oil transportation.Generally, mechanical pipeline pigging is used to remove the wax deposits on pipeline wall.However, the field pigging operation relies greatly on the experience due to the poor understanding of wax removal mechanism, and pig plugging and wa

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PWM rectifier LCL filter design for underground mine

The dual PWM variable frequency speed regulation system applied to scraper conveyors, coal shearers and other mechanical equipments needs to be installed a filter on the rectifier grid-side to suppress harmonic currents.The existing LCL filter design method relies on experience and has low efficiency, and the damping loss problem is not considered

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GAMBARAN KADAR IODIUM DALAM GARAM RUMAH TANGGA BERDASARKAN KADAR IODIUM DALAM GARAM YANG DIBELI RESPONDEN DI KECAMATAN WARUNGGUNUNG KABUPATEN LEBAK BANTEN

ABSTRAK Latar Belakang.Garam dapur yang terfortifikasi umumnya merupakan sumber iodium yang baik.Survei yang telah dilakukan oleh Program Studi Diploma IV Gizi Jurusan Gizi Politeknik Kesehatan Jakarta pada 2015 di Kecamatan Warunggunung menunjukkan bahwa kadar iodium dalam garam rumah tangga yang positif mengandung iodium hanya sebesar 33,3%.Hal i

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