Model sistem penjaminan mutu dan proses penerapannya di perguruan tinggi R Hedwig, G Polla Yogyakarta: Graha Ilmu, 2006 | 66 | 2006 |
Quantitative hydrogen analysis of zircaloy-4 using low-pressure laser plasma technique KH Kurniawan, M Pardede, R Hedwig, ZS Lie, TJ Lie, DP Kurniawan, ... Analytical chemistry 79 (7), 2703-2707, 2007 | 45 | 2007 |
Sistem Penjaminan Mutu di Perguruan Tinggi Monitoring dan Evaluasi Internal R Hedwig Yogyakarta: Graha Ilmu, 2007 | 41 | 2007 |
Subtarget effect on laser plasma generated by transversely excited atmospheric CO2 laser at atmospheric gas pressure K Kagawa, TJ Lie, R Hedwig, SN Abdulmajid, MM Suliyanti, H Kurniawan Japanese Journal of Applied Physics 39 (5R), 2643, 2000 | 40 | 2000 |
An improved approach for hydrogen analysis in metal samples using single laser-induced gas plasma and target plasma at helium atmospheric pressure SN Abdulmadjid, MM Suliyanti, KH Kurniawan, TJ Lie, M Pardede, ... Applied Physics B 82, 161-166, 2006 | 37 | 2006 |
Characteristics of hydrogen emission in laser plasma induced by focusing fundamental Q-sw YAG laser on solid samples N Idris, H Kurniawan, TJ Lie, M Pardede, H Suyanto, R Hedwig, ... Japanese journal of applied physics 43 (7R), 4221, 2004 | 37 | 2004 |
Shock wave plasma induced by TEA CO2 laser bombardment on glass samples at high pressures AM Marpaung, R Hedwig, M Pardede, TJ Lie, MO Tjia, K Kagawa, ... Spectrochimica Acta Part B: Atomic Spectroscopy 55 (10), 1591-1599, 2000 | 37 | 2000 |
Quantitative analysis of deuterium in zircaloy using double-pulse laser-induced breakdown spectrometry (LIBS) and helium gas plasma without a sample chamber H Suyanto, ZS Lie, H Niki, K Kagawa, K Fukumoto, H Rinda, ... Analytical chemistry 84 (5), 2224-2231, 2012 | 35 | 2012 |
Preliminary analysis of C and H in a “Sangiran” fossil using laser-induced plasma at reduced pressure MM Suliyanti, S Sardy, A Kusnowo, M Pardede, R Hedwig, KH Kurniawan, ... Journal of applied physics 98 (9), 2005 | 35 | 2005 |
Characterization and performance evaluation of cellulose acetate–polyurethane film for lead II ion removal M Iqhrammullah, M Marlina, HPSA Khalil, KH Kurniawan, H Suyanto, ... Polymers 12 (6), 1317, 2020 | 34 | 2020 |
H–D analysis employing energy transfer from metastable excited-state He in double-pulse LIBS with low-pressure He gas M Pardede, TJ Lie, J Iqbal, M Bilal, R Hedwig, M Ramli, A Khumaeni, ... Analytical chemistry 91 (2), 1571-1577, 2018 | 30 | 2018 |
The role of He in enhancing the intensity and lifetime of H and D emissions from laser-induced atmospheric-pressure plasma KH Kurniawan, TJ Lie, MM Suliyanti, R Hedwig, M Pardede, M Ramli, ... Journal of Applied Physics 105 (10), 2009 | 30 | 2009 |
Filler-Modified Castor oil-based polyurethane foam for the removal of aqueous heavy metals detected using laser-induced breakdown spectroscopy (LIBS) technique M Iqhrammullah, Marlina, R Hedwig, I Karnadi, KH Kurniawan, NG Olaiya, ... Polymers 12 (4), 903, 2020 | 29 | 2020 |
Some notes on the role of meta-stable excited state of helium atom in laser-induced helium gas breakdown spectroscopy M Ramli, K Kagawa, SN Abdulmadjid, N Idris, WS Budi, MA Marpaung, ... Applied Physics B 86, 729-734, 2007 | 29 | 2007 |
Detection of deuterium and hydrogen using laser-induced helium gas plasma at atmospheric pressure KH Kurniawan, TJ Lie, MM Suliyanti, R Hedwig, SN Abdulmadjid, ... Journal of applied physics 98 (9), 2005 | 29 | 2005 |
Quantitative hydrogen analysis of zircaloy-4 in laser-induced breakdown spectroscopy with ambient helium gas M Ramli, K Fukumoto, H Niki, SN Abdulmadjid, N Idris, T Maruyama, ... Applied optics 46 (34), 8298-8304, 2007 | 27 | 2007 |
Hydrogen analysis in solid samples using laser-induced helium plasma at atmospheric pressure M Pardede, KH Kurniawan, TJ Lie, R Hedwig, N Idris, T Kobayashi, ... Journal of applied physics 98 (4), 2005 | 26 | 2005 |
Plasma emission induced by an Nd-YAG laser at low pressure on solid organic sample, its mechanism, and analytical application MM Suliyanti, S Sardy, A Kusnowo, R Hedwig, SN Abdulmadjid, ... Journal of applied physics 97 (5), 2005 | 26 | 2005 |
Food analysis employing high energy nanosecond laser and low pressure He ambient gas R Hedwig, K Lahna, R Idroes, I Karnadi, I Tanra, J Iqbal, D Kwaria, ... Microchemical Journal 147, 356-364, 2019 | 24 | 2019 |
Application of picosecond laser-induced breakdown spectroscopy to quantitative analysis of boron in meatballs and other biological samples R Hedwig, K Lahna, ZS Lie, M Pardede, KH Kurniawan, MO Tjia, ... Applied Optics 55 (32), 8986-8992, 2016 | 24 | 2016 |