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iGRAPHIA –AN ONLINE COURSE ON INTERACTIVE PORTFOLIOS FOR ASEAN-ROK HIGHER EDUCATION STUDENTS
Fauziyah Md Aris,Zoraini Wati Abas APEC국제교육협력원 2015 Asia-Pacific Cybereducation Journal Vol.11 No.2
Students in higher education institutions come from different walks of lives, some with a wide experience from their daily work, personal, and lifelong learning activities. To better manage their lifelong learning (informal, non-formal and formal learning) activities, these students will benefit from putting together an e-portfolio that transcribes their learning experiences into a form that is both attractive and meaningful. A short online course titled “iGraphia” was designed and developed and made available as a pilot open online course to enable students to understand the nature and importance of an e-portfolio portfolios and who will be better able to connect informal and non-formal learning experiences with formal learning experiences by mapping and linking the various experiences as a set of learning journeys. This paper will report the design and development of the pilot course and on how the learning outcomes will be achieved by those who enroll.
L-DOPA Synthesis Using Tyrosinase-immobilized on Electrode Surfaces
( Siti Fauziyah Rahman ),( Siramulu Gobikhrisnan ),( Misri Gozan ),( Gwi Taek Jong ),( Don-hee Park ) 한국화학공학회 2016 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.54 No.6
Levodopa or L-3,4-dihydroxyphenylalanine (L-DOPA) is the direct precursor of the neurotransmitter dopa-mine. L-DOPA is a well-known neuroprotective agent for the treatment of Parkinson`s disease symptoms. L-DOPA was synthesized using the enzyme, tyrosinase, as a biocatalyst for the conversion of L-tyrosine to L-DOPA and an electro-chemical method for reducing L-DOPAquinone, the product resulting from enzymatic synthesis, to L-DOPA. In this study, three electrode systems were used: A glassy carbon electrode (GCE) as working electrode, a platinum, and a Ag/ AgCl electrode as auxiliary and reference electrodes, respectively. GCE has been modified using electropoly-merization of pyrrole to facilitate the electron transfer process and immobilize tyrosinase. Optimum conditions for the electropolymerization modified electrode were a temperature of 30℃ and a pH of 7 producing L-DOPA concentration 0.315 mM. After 40 days, the relative activity of an enzyme for electropolymerization remained 38.6%, respectively.
Evaluating Information Credibility Toward Green Marketing in Indonesia
JAMAL, Fauziyah Nur,OTHMAN, Norfaridatul Akmaliah,SALEH, Raden Chairul,NURHANAY, Almira Husnun,ROHMAH, Wafrotur Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.2
This study aims to identify variables, which have relationship to the information credibility toward brand trust. Other than that, this study also proposes a system dynamics approach method, where the time to achieve different credible information can be modeled efficiently and by using variable-oriented simulation methods. Data, which are used for testing, are derived from 400 questionnaires. Data for SEM are collected by using questionnaire and are processed using AMOS software to identify the result whether it is proper to determine the proper variables and the indicators, which will be processed in the simulation using Powersim. The result shows that, from six variables proposed, five are significant variables that support the information credibility. The value of information credibility has fluctuated in 10 years. The important aspect in business activity is a business strategy that incorporates marketing activities. Many companies are adopting green marketing practice to achieve a better business performance, so that information credibility factor is needed. Over the past few years, numerous industries in Indonesia have increased awareness toward green movement. Some companies apply the whole process of creating green products, while others only do so partially, but this is a good approach to green business development in Indonesia nonetheless.
Rahman, Siti Fauziyah,Min, Kyoungseon,Park, Seok-Hwan,Park, Jae-Hee,Yoo, Jin Cheol,Park, Don-Hee Korean Society for Biotechnology and Bioengineerin 2016 Biotechnology and Bioprocess Engineering Vol.21 No.5
Dopamine, the most important neurotransmitter in the human brain, controls various functions. Dopamine deficiency causes fatal neurological disorders such as Parkinson's disease. Even though various types of electrochemical sensors have been studied to measure dopamine levels, they often have poor selectivity for dopamine due to co-existence of interfering substances (e.g. ascorbic acid). Herein, we aimed to develop a highly sensitive dopamine detection method in the co-existence of ascorbic acid, a major interfering substance in real sample by designing an electrochemically pretreated and activated carbon/tyrosinase/Nafion<TEX>$^{(R)}$</TEX>-modified GCE as an amperometric dopamine biosensor. To maximize the biosensor performance, pH, volume of Nafion<TEX>$^{(R)}$</TEX>, and scan rate were optimized. This electrochemically pretreated and activated carbon/tyrosinase/Nafion<TEX>$^{(R)}$</TEX>-modified GCE could detect as low as <TEX>$50{\mu}M$</TEX> of dopamine with a wide linear range (<TEX>$50{\sim}1,000{\mu}M$</TEX>) within a few seconds. In addition, it had a sensitivity of <TEX>$103mAM/cm^2$</TEX>, which was higher than all previously reported tyrosinase-based dopamine biosensors. In addition, interference effect caused by 4 mM of ascorbic acid was negligible in the co-existence of 1 mM of dopamine. Consequently, this electrochemically pretreated and activated carbon/tyrosinase/Nafion<TEX>$^{(R)}$</TEX>-modified GCE might be applicable as amperometric biosensor for selective detection of dopamine in real samples with interfering substances.
( Rahman Siti Fauziyah ),( Sriramulu Gobikrishnan ),( Natarianto Indrawan ),( Seok Hwan Park ),( Jae Hee Park ),( Kyoung Seon Min ),( Young Je Yoo ),( Don Hee Park ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.10
Levodopa or L-3,4-dihydroxyphenylalanine (L-DOPA) is the precursor of the neurotransmitter dopamine. L-DOPA is a famous treatment for Parkinson`s disease symptoms. In this study, electroenzymatic synthesis of L-DOPA was performed in a three-electrode cell, comprising a Ag/AgCl reference electrode, a platinum wire auxiliary electrode, and a glassy carbon working electrode. L-DOPA had an oxidation peak at 376 mV and a reduction peak at -550 mV. The optimum conditions of pH, temperature, and amount of free tyrosinase enzyme were pH 7, 30℃, and 250 IU, respectively. The kinetic constant of the free tyrosinase enzyme was found for both cresolase and catacholase activity to be 0.25 and 0.4 mM, respectively. A cyclic voltammogram was used to investigate the electron transfer rate constant. The mean heterogeneous electron transfer rate (ke) was 5.8 × 10-4 cm/s. The results suggest that the electroenzymatic method could be an alternative way to produce L-DOPA without the use of a reducing agent such as ascorbic acid.
Sanudin,Ary Widiyanto,Eva Fauziyah,Leti Sundawati 한국산림과학회 2023 Forest Science And Technology Vol.19 No.3
The COVID-19 pandemic has created impacts on various aspects of life and caused a shock to all sectors, including agriculture. The Indonesian government continues encouraging access for communities to be involved in forest management through social forestry pro- grams Minister of Environment and Forestry Regulation No. 9 of 2021 on Social Forestry Management is Indonesia’s latest policy regulating social forestry. For Java Island, the social forestry program is regulated by the Minister of Environment and Forestry Regulation No. 39 of 2017. Traditional agroforestry has been carried out by farmers throughout Indonesia for a long time, both in state forest areas through social forestry programs and on private land dominated by woody tree species called private forests. This research aims to examine the resilience of agroforestry farmers in social forestry areas and private forest during the COVID-19 pandemic in Indonesia. This research was conducted in Garut and Bandung Districts, West Java Province, Indonesia, from May to July 2022. Interviews were performed with 219 respondents from six farmer groups: four groups that obtained social forestry per- mits through the recognition and protection of forestry partnerships (pengakuan dan perlin- dungan kemitraan kehutanan/KULIN KK) scheme and two groups in a private forest. The household livelihood resilience approach was used to analyze the agroforestry farmers’ resili- ence, comprised of financial, human, social, physical, and natural capital. Data were proc- essed with a Likert scale (1, 2, and 3) and visualized using a spider diagram to compare and distinguish the five types of capital. The results showed the COVID-19 pandemic affected both social forestry and private forest farmers, where there was a decrease in agroforestry product prices and an increase in production input prices. These excluded private forest products, specifically cardamom, which has increased prices. Agroforestry farmers in the pri- vate forest have higher resilience than social forestry. These results highlight the need to increase financial capital, which has the lowest value for increasing household resilience. The level of resilience is influenced by the characteristics of farmers, especially their level of edu- cation, land ownership, and income. Based on the results, capital assistance, market access, and training related to post-harvesting are strategies for improving resilience. The results also contributed to efforts needed to increase the resilience of social forestry and private for- est farmers during the COVID-19 pandemic. Further research is needed to determine the resilience of agroforestry farmers in social forestry and community forests after the COVID-19 pandemic.