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149 results on '"Husin H."'

1. A COMPARATIVE STUDY OF BIODIESEL PRODUCTION FROM SCREW PINE FRUIT SEED: USING ULTRASOUND AND MICROWAVE ASSISTANCE IN IN-SITU TRANSESTERIFICATION

Author

MAHLINDA, SUPARDAN M.D., HUSIN H., RIZA M., and MUSLIM A.

Subjects
Biodiesel, Fatty acid, Screw pine fruit seed, Microwave, Ultrasound., Engineering (General). Civil engineering (General), TA1-2040, Technology (General), T1-995
Abstract

The main purpose of this research was the production of biodiesel from screw pine fruit seed (SPFS) oil as a new biodiesel feed-stock using in-situ transesterification with the assistance of microwave and ultrasound. The effect of independent variable such as the SPFS oil to methanol ratio, reaction time, catalyst concentration and temperature were investigated and compared the results of both methods. The physicochemical parameters of the biodiesel, such as kinematic viscosity, density and acid value were analysed using the EN 14214-2003 standard. The fatty acid methyl ester composition was identified using GC–MS. The experimental results with 25:1 w/w ratio of methanol to the SPFS oil, 1:1 w/w ratio of methanol to chloroform, 5% KOH, 50 rpm stirring and 65 C reaction temperature showed that the maximum conversion efficiency was approximately 88.12% for the assistance of microwave with 4-min reaction time and 450W microwave power, and it was approximately 86.38% for the assistance of ultrasound with 80-min reaction time, 37 kHz ultrasound. The physicochemical properties met to the EN 14214-2003 standard, except for the acid value. Meanwhile, the GC–MS analysis identified five major fatty acid esters in the biodiesel.

Published
2017

5. PAPR Reduction of OFDM System Using Selective Mapping (SLM) and Firefly Algorithm (FA)

Author

Qamarina, Nur, Wahab, A. A. A., Othman, W. A. F. W., Alhady, S. S. N., Husin, H., Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Isa, Khalid, editor, Md. Zain, Zainah, editor, Mohd-Mokhtar, Rosmiwati, editor, Mat Noh, Maziyah, editor, Ismail, Zool H., editor, Yusof, Ahmad Anas, editor, Mohamad Ayob, Ahmad Faisal, editor, Azhar Ali, Syed Saad, editor, and Abdul Kadir, Herdawatie, editor

Published
2022
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12. Principal's Supervisory Practices of Mindanao State University-Sulu Laboratory High School: Impact on the Attitudes of Teachers and Parental Involvement

Author

Abdulkadil, Husin H.

Subjects
Teachers’ attitudes, Parental involvement, Principal’s supervisory practices
Abstract

The aim of this study is to investigate the impact of principal’s supervisory practices of Mindanao State University-Sulu on the attitudes of teachers and parental involvement. In terms of happiness, interest, and enthusiasm of teachers and parents on the parental involvement in terms of support and assistance. The study was conducted and utilized MSU-Sulu Laboratory High School teachers and parents of the students. The parents were represented by the Parents Teachers Community Association (PTCA) elected officials. The parents have answered questionnaire on their attitudes when the principal and teachers invited the parents for meetings and other school activities as it is supervised by the school principal. The researcher grouped the attitudes of teachers and parental involvement. The average responses were analyzed using mean. Simple regression was used to determine the impact of the supervisory practices on the attitudes of teachers and parental involvement. The teachers have very high level of happiness, interest and enthusiasm for the principal’s supervisory practices. The parents have high level of happiness, interest and enthusiasm for the principal’s supervisory practices during the meeting and other activities. The principal’s supervisory practices highly impacted on teachers’ attitudes and parental involvement. The principal’s supervisory practices were a factor that influences the happiness, interest and enthusiasm of teachers and parental involvement.

Published
2022

14. Effect of pouring temperature on impact toughness on brass (Cu-Zn) through metal casting

Author

Iqbal, Ali, N., Husin, H., Akhyar, Khairil, and Ahmad Farhan

Subjects
brass, casting, pouring temperature, impact toughness, scanning electron microscope (SEM), Mining engineering. Metallurgy, TN1-997
Abstract

The purpose of this study is to investigate the impact toughness of brass (CuZn) with five variations of pouring temperature during the production of cast-samples through a metal casting process. Five variations of the pouring temperature are 1060, 1110, 1160, 1210, and 1260 °C, respectively. Meanwhile, the mold is produced from medium carbon steel and does not preheat (room temperature). The results show the maximum impact toughness is 20,67 Joule at 1110 °C of pouring temperature, then the minimum impact toughness is 17,67 Joule at 1260 °C of pouring temperature. In general, it can be concluded that the impact toughness decreases with increasing pouring temperature.

Published
2021

16. Longitudinal prediction of periconception alcohol use: a 20-year prospective cohort study across adolescence, young adulthood and pregnancy

Author

Hutchinson, D, Spry, EA, Mohamad Husin, H, Middleton, M, Hearps, S, Moreno-Betancur, M, Elliott, EJ, Ryan, J, Olsson, CA, Patton, GC, Hutchinson, D, Spry, EA, Mohamad Husin, H, Middleton, M, Hearps, S, Moreno-Betancur, M, Elliott, EJ, Ryan, J, Olsson, CA, and Patton, GC

Abstract

BACKGROUND AND AIMS: Alcohol consumption is common in adolescence and young adulthood and may continue into pregnancy, posing serious risk to early fetal development. We examine the frequency of periconception alcohol use (prior to pregnancy awareness) and the extent to which adolescent and young adult alcohol use prospectively predict periconception use. DESIGN: A longitudinal, population-based study. SETTING: Victoria, Australia. PARTICIPANTS: A total of 289 women in trimester three of pregnancy (age 29-35 years; 388 pregnancies). MEASURES: The main exposures were binge [≥ 4.0 standard drinks (SDs)/day] and frequent (≥ 3 days/week) drinking in adolescence (mean age = 14.9-17.4 years) and young adulthood (mean age 20.7-29.1 years). Outcomes were frequency (≥ 3 days/week, ≥ monthly, never) and quantity (≥ 4.0 SDs, ≥ 0.5 and < 4.0 SDs, none) of periconception drinking. FINDINGS: Alcohol use was common in young adulthood prior to pregnancy (72%) and in the early weeks of pregnancy (76%). The proportions drinking on most days and binge drinking were similar at both points. Reflecting a high degree of continuity in alcohol use behaviours, most women who drank periconceptionally had an earlier history of frequent (77%) and/or binge (85%) drinking throughout the adolescent or young adult years. Young adult binge drinking prospectively predicted periconception drinking quantity [odds ratio (OR) = 3.7, 95% confidence interval (CI) = 1.9-7.4], compared with women with no prior history. Similarly, frequent young adult drinking prospectively predicted frequent periconception drinking (OR = 30.7, 95% CI = 12.3-76.7). CONCLUSIONS: Women who engage in risky (i.e. frequent and binge) drinking in their adolescent and young adult years are more likely to report risky drinking in early pregnancy prior to pregnancy recognition than women with no prior history of risky drinking.

Published
2022

41. Determinants of MS re-activation after discontinuing therapies.

Author

Fernandez Bolanos R., Kubala Havrdova E., Izquierdo G., Eichau S., Prat A., Girard M., Duquette P., Trojano M., Grammond P., Lugaresi A., Onofrj M., Ozakbas S., Verheul F., Ramo-Tello C., Turkoglu R., Horakova D., Macdonell R., Soysal A., Moreno Betancur M., Kalincik T., Butler E., Husin H., Wallace J., Malpas C., Sharmin S., Butzkueven H., Sola P., Ferraro D., Alroughani R., Grand'Maison F., Terzi M., Lechner-Scott J., Boz C., Hupperts R., Shaygannejad V., Bergamaschi R., Pucci E., Van Pesch V., Hodgkinson S., McCombe P., Granella F., Slee M., Van Wijmeersch B., Karabudak R., Prevost J., Petersen T., Spitaleri D., Barnett M., Solaro C., Iuliano G., Fernandez Bolanos R., Kubala Havrdova E., Izquierdo G., Eichau S., Prat A., Girard M., Duquette P., Trojano M., Grammond P., Lugaresi A., Onofrj M., Ozakbas S., Verheul F., Ramo-Tello C., Turkoglu R., Horakova D., Macdonell R., Soysal A., Moreno Betancur M., Kalincik T., Butler E., Husin H., Wallace J., Malpas C., Sharmin S., Butzkueven H., Sola P., Ferraro D., Alroughani R., Grand'Maison F., Terzi M., Lechner-Scott J., Boz C., Hupperts R., Shaygannejad V., Bergamaschi R., Pucci E., Van Pesch V., Hodgkinson S., McCombe P., Granella F., Slee M., Van Wijmeersch B., Karabudak R., Prevost J., Petersen T., Spitaleri D., Barnett M., Solaro C., and Iuliano G.

Abstract

Introduction: A decision to discontinue MS immunotherapies is common in clinical practice - whether in order to switch to another therapy or at an advanced stage of progressive MS without relapses. The evidence regarding individual risk of MS re-activation after treatment discontinuation is limited. Aim(s): To evaluate associations of demographic and clinical patient characteristics with the risk of relapses after discontinuing treatment. Both overall and treatment-specific associations are explored. Method(s): Using the global MSBase registry, we identified all patients who discontinued MS immunotherapy after >=3 months on treatment, with the recorded disability score (EDSS) at the time of discontinuing treatment, and prospectively recorded follow-up of >=6 months. The probability of experiencing a relapse after discontinuing treatment, conditional on patient characteristics, was analysed with Cox proportional hazards model. Differences in these associations among different therapies were studied with interaction terms. Result(s): 24,989 episodes of treatment discontinuation were recorded from 17,871 patients (74% female, mean age at discontinuation 39 years, 88% relapsing-remitting MS, mean MS duration 10 years, median EDSS 2.5). The patient characteristics associated with a lower hazard of MS re-activation were male sex (b=0.87, p< 0.001), older age (b=0.98, p< 0.001), MS duration (b=1.01, p< 0.001), secondary progressive MS (b=0.73, p< 0.001), longer treatment duration (0.95, p< 0.001), greater number of prior treatments (1: b=0.62, p< 0.001; >=2: b=0.39, p< 0.001) and greater number of relapses during the previous year (1: b=1.30, p< 0.001; >=2: b=1.62, p< 0.001). The characteristics associated with a greater risk of MS re-activation were clinically isolated syndrome (b=1.87, p< 0.001) and greater EDSS (4-5.5: b=1.41, p< 0.001; >=6: b=1.17, p=0.001). Therapies used more recently (dimethyl fumarate, fingolimod, natalizumab) tended to be associated with a lower h

Published
2019

42. Production process and optimization of solid bioethanol from empty fruit bunches of palm oil using response surface methodology

Author

Nurfahmi, Mofijur, M, Ong, HC, Jan, BM, Kusumo, F, Sebayang, AH, Husin, H, Silitonga, AS, Mahlia, TMI, Rahman, SMA, Nurfahmi, Mofijur, M, Ong, HC, Jan, BM, Kusumo, F, Sebayang, AH, Husin, H, Silitonga, AS, Mahlia, TMI, and Rahman, SMA

Abstract

© 2019 by the authors. This study aimed to observe the potential of solid bioethanol as an alternative fuel with high caloric value. The solid bioethanol was produced from liquid bioethanol, which was obtained from the synthesis of oil palm empty fruit bunches (PEFBs) through the delignification process by using organosolv pretreatment and enzymatic hydrolysis. Enzymatic hydrolysis was conducted using enzyme (60 FPUg-1 of cellulose) at a variety of temperatures (35 °C, 70 °C, and 90 °C) and reaction times (2, 6, 12, 18, and 24 h) in order to obtain a high sugar yield. The highest sugars were yielded at the temperature of 90 °C for 48 h (152.51 mg/L). Furthermore, fermentation was conducted using Saccharomyces cerevisiae. The bioethanol yield after fermentation was 62.29 mg/L. Bioethanol was extracted by distillation process to obtain solid bioethanol. The solid bioethanol was produced by using stearic acid as the additive. In order to get high-quality solid bioethanol, the calorific value was optimized using the response surface methodology (RSM) model. This model provided the factor variables of bioethanol concentration (vol %), stearic acid (g), and bioethanol (mL) with a minus result error. The highest calorific value was obtained with 7 g stearic acid and 5 mL bioethanol (43.17 MJ/kg). Burning time was tested to observe the quality of the solid bioethanol. The highest calorific value resulted in the longest burning time. The solid bioethanol has a potential as solid fuel due to the significantly higher calorific value compared to the liquid bioethanol.

Published
2019

43. Optimization of cerbera manghas biodiesel production using artificial neural networks integrated with ant colony optimization

Author

Silitonga, AS, Mahlia, TMI, Shamsuddin, AH, Ong, HC, Milano, J, Kusumo, F, Sebayang, AH, Dharma, S, Ibrahim, H, Husin, H, Mofijur, M, Rahman, SMA, Silitonga, AS, Mahlia, TMI, Shamsuddin, AH, Ong, HC, Milano, J, Kusumo, F, Sebayang, AH, Dharma, S, Ibrahim, H, Husin, H, Mofijur, M, and Rahman, SMA

Abstract

© 2019 by the authors. Optimizing the process parameters of biodiesel production is the key to maximizing biodiesel yields. In this study, artificial neural network models integrated with ant colony optimization were developed to optimize the parameters of the two-step Cerbera manghas biodiesel production process: (1) esterification and (2) transesterification. The parameters of esterification and transesterification processes were optimized to minimize the acid value and maximize the C. manghas biodiesel yield, respectively. There was excellent agreement between the average experimental values and those predicted by the artificial neural network models, indicating their reliability. These models will be useful to predict the optimum process parameters, reducing the trial and error of conventional experimentation. The kinetic study was conducted to understand the mechanism of the transesterification process and, lastly, the model could measure the physicochemical properties of the C. manghas biodiesel.

Published
2019

44. Determinants of MS re-activation after discontinuing therapies

Author

Husin, H., Wallace, J., Malpas, C., Sharmin, S., Horakova, D., Havrdova, E. Kubala, Hupperts, R., and Ondokuz Mayıs Üniversitesi

Abstract

34th Congress of the European-Committee-for-Treatment-and-Research-in-Multiple-Sclerosis (ECTRIMS) -- OCT 10-12, 2018 -- Berlin, GERMANY McCombe, Pamela/0000-0003-2704-8517; Lugaresi, Alessandra/0000-0003-2902-5589; Turkoglu, Recai/0000-0001-9724-851X WOS: 000446861400464 … European Comm Treatment & Res Multiple Sclerosis BiogenBiogen; Charles University in Prague [PRVOUK-P26/LF1/4]; Czech Minsitry of Education [PROGRES Q27/LF1]; Czech Ministry of HealthMinistry of Health, Czech Republic [NT13237-4/2012]; Czech Ministry of EducationMinistry of Education, Youth & Sports - Czech Republic [Q27/LF1]; Canadian Institutes of Health ResearchCanadian Institutes of Health Research (CIHR); CIHRCanadian Institutes of Health Research (CIHR); MS Society of Canada; NovartisNovartis; GenzymeGenzyme Corporation; Biogen-IdecBiogen; MerckMerck & Company; Teva-Neuroscience; RocheRoche Holding; BayerBayer AG; SanofiSanofi-Aventis; Teva; Fondazione Italiana Sclerosi Multipla (FISM)Fondazione Italiana Sclerosi Multipla (FISM); Biogen IdecBiogen; Sanofi-Genzyme; Teva Neurosciences; Mitsubishi; ONO Pharmaceuticals; Bayer-ScheringBayer AG; Bayer ScheringBayer AG; Sanofi-AventisSanofi-Aventis; Sanofi AventisSanofi-Aventis; Associazione Marchigiana Sclerosi Multipla e altre malattie neurologiche; Novartis Pharma; Almirall Dana Horakova received speaker honoraria and consulting fees from Biogen, Merck, Teva and Novartis, as well as support for research activities from Biogen and research grants from Charles University in Prague [PRVOUK-P26/LF1/4], Czech Minsitry of Education [PROGRES Q27/LF1] and Czech Ministry of Health [NT13237-4/2012].; Eva Kubala Havrdova received speaker honoraria and consultant fees from Actelion, Biogen, Celgene, Merck, Novartis, Roche, Sanofi and Teva, and support for research activities from Czech Ministry of Education [project Progres Q27/LF1].; Marc Girard received consulting fees from Teva Canada Innovation, Biogen, Novartis and Genzyme Sanofi; lecture payments from Teva Canada Innovation, Novartis and EMD. He has also received a research grant from Canadian Institutes of Health Research.; Pierre Duquette served on editorial boards and has been supported to attend meetings by EMD, Biogen, Novartis, Genzyme, and TEVA Neuroscience. He holds grants from the CIHR and the MS Society of Canada and has received funding for investigator-initiated trials from Biogen, Novartis, and Genzyme.; Maria Trojano received speaker honoraria from Biogen-Idec, Bayer-Schering, Sanofi Aventis, Merck, Teva, Novartis and Almirall; has received research grants for her Institution from Biogen-Idec, Merck, and Novartis.; Pierre Grammond is a Merck, Novartis, Teva-neuroscience, Biogen and Genzyme advisory board member, consultant for Merck, received payments for lectures by Merck, Teva-Neuroscience and Canadian Multiple sclerosis society, and received grants for travel from Teva-Neuroscience and Novartis.; Alessandra Lugaresi is a Bayer, Biogen, Genzyme, Merck Advisory Board Member. She received travel grants and honoraria from Roche, Bayer, Biogen, Merck, Novartis, Sanofi, Teva and Fondazione Italiana Sclerosi Multipla (FISM). Her institution received research grants from Bayer, Biogen, Merck, Novartis, Sanofi, Teva and Fondazione Italiana Sclerosi Multipla (FISM).; Helmut Butzkueven served on scientific advisory boards for Biogen, Novartis and Sanofi-Aventis and has received conference travel support from Novartis, Biogen and Sanofi Aventis. He serves on steering committees for trials conducted by Biogen and Novartis, and has received research support from Merck, Novartis and Biogen.; Patrizia Sola served on scientific advisory boards for Biogen Idec and TEVA, she has received funding for travel and speaker honoraria from Biogen Idec, Merck, Teva, Sanofi Genzyme, Novartis and Bayer and research grants for her Institution from Bayer, Biogen, Merck, Novartis, Sanofi, Teva.; Diana Ferraro received travel grants and/or speaker honoraria from Merck, TEVA, Novartis, Biogen and Sanofi-Genzyme.; Francois Grand Maison received honoraria or research funding from Biogen, Genzyme, Novartis, Teva Neurosciences, Mitsubishi and ONO Pharmaceuticals.; Murat Terzi received travel grants from Novartis, Bayer-Schering, Merck and Teva; has participated in clinical trials by Sanofi Aventis, Roche and Novartis.; Raymond Hupperts received honoraria as consultant on scientific advisory boards from Merck, Biogen, Genzyme-Sanofi and Teva, research funding from Merck and Biogen, and speaker honoraria from Sanofi-Genzyme and Novartis.; Roberto Bergamaschi received speaker honoraria from Bayer Schering, Biogen, Genzyme, Merck, Novartis, Sanofi-Aventis, Teva; research grants from Bayer Schering, Biogen, Merck, Novartis, Sanofi-Aventis, Teva; congress and travel/accommodation expense compensations by Almirall, Bayer Schering, Biogen, Genzyme, Merck, Novartis, Sanofi-Aventis, Teva.; Eugenio Pucci served on scientific advisory boards for Merck, Genzyme and Biogen; he has received honoraria and travel grants from Sanofi Aventis, Novartis, Biogen, Merck, Genzyme and Teva; he has received travel grants and equipment from "Associazione Marchigiana Sclerosi Multipla e altre malattie neurologiche".; Vincent Van Pesch received travel grants from Biogen, Bayer Schering, Genzyme, Merck, Teva and Novartis Pharma. His institution receives honoraria for consultancy and lectures from Biogen, Bayer Schering, Genzyme, Merck, Roche, Teva and Novartis Pharma as well as research grants from Novartis Pharma and Bayer Schering.; Suzanne Hodgkinson received honoraria and consulting fees from Novartis, Bayer Schering and Sanofi, and travel grants from Novartis, Biogen Idec and Bayer Schering.; Franco Granella received research grant from Biogen, served on scientific advisory boards for Biogen, Novartis, Merck, and Sanofi-Aventis and received funding for travel and speaker honoraria from Biogen, Merck, Sanofi-Aventis, and Almirall.; Thor Petersen received funding or speaker honoraria from Biogen, Merck, Novartis, Bayer Schering, Sanofi-Aventis, Roche, and Genzyme.; Michael Barnett served on scientific advisory boards for Biogen, Novartis and Genzyme and has received conference travel support from Biogen and Novartis. He serves on steering committees for trials conducted by Novartis. His institution has received research support from Biogen, Merck and Novartis.; Claudio Solaro served on scientific advisory boards for Merck, Genzyme, Almirall, and Biogen; received honoraria and travel grants from Sanofi Aventis, Novartis, Biogen, Merck, Genzyme and Teva.; Gerardo Iuliano had travel/accommodations/meeting expenses funded by Bayer Schering, Biogen, Merck, Novartis, Sanofi Aventis, and Teva.; Cristina Ramo-Tello received research funding, compensation for travel or speaker honoraria from Biogen, Novartis, Genzyme and Almirall.; Tomas Kalincik served on scientific advisory boards for Roche, Genzyme-Sanofi, Novartis, Merck and Biogen, steering committee for Brain Atrophy Initiative by Genzyme, received conference travel support and/or speaker honoraria from WebMD Global, Novartis, Biogen, Genzyme-Sanofi, Teva, BioCSL and Merck and received research support from Biogen.

Published
2018

46. CHARACTERISTIC OF HYDROXYAPATITE-SUPPORTED Ni, Ce, Cu CATALYST PREPARED BY DEPOSITION-PRECIPITATION AND IMPREGNATION METHOD FOR GLYCEROLAQUEOUS PHASE REFORMING PROCESS.

Author

Hakim, L., Husin, H., Sari, R., Dewi, R., and Meriatna

Subjects
*NICKEL catalysts, *STEAM reforming, *METAL catalysts, *CATALYSTS, *METALLIC surfaces, *HYDROGEN production, *APPROPRIATE technology
Abstract

The need and development of cleaner and greener alternative technologies using the heterogeneous catalytic are very important in fuel synthesis. Hydroxyapatite-supported Ni-Ce-Cu as biomaterial catalysts were synthesized and characteristic to study their potential to be used for glycerol reforming to hydrogen production. The catalysts have been prepared by deposition-precipitation and impregnation method for hydrogen production via aqueous phase reforming (APR) with varying the amount of nickel, cerium and copper. The catalysts were characterized by BET surface area, X-ray diffraction, and SEM-EDX techniques. It is found that the difference percent weight of Ni, Ce, Cu loading prepared via deposition-precipitation method shows a significant effect for the surface area, distribution of metals and crystallization of catalysts. The highest BET surface (61,11 m2/gr) and uniformly metals distribution on the surface Hydroxyapatite (HAP) area was noticed for catalysts composition containing much more Ce and Cu. [ABSTRACT FROM AUTHOR]

Published
2020
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