Coffee waste as potential adsorbent for the removal of basic dyes from aqueous solution

Amor Hafiane,Ridha Lafi,Anouar ben Fradj,B.H. Hameed 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.12

We evaluated the adsorption performance of coffee waste (CW), collected from coffee shops, for the removalof two basic dyes, toluidine blue (TB) and crystal violet (CV), from aqueous solutions. Batch adsorption experimentswere conducted under different conditions including contact time, initial concentration of dye, pH, sorbent dosage andtemperature. The Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) isotherms were tested to examinethe adsorption behavior. The equilibrium data were well fitted by Langmuir isotherm model. The kinetic study indicatesthat adsorption follows the pseudo second-order model. The maximum adsorption capacity was found to be as highas 142.5 mg/g for TB and 125 mg/g for CV, which makes CW a prospective adsorbent for the removal of basic dyesfrom aqueous solution.

Effect of Responsible Tourism Practice on the Quality of Life of Residence in Boracay Island, Philippines

Amor, Maridel Christine A.(아모르 마리델),Lee, Misook(이미숙) 한국산림휴양복지학회 2021 한국산림휴양학회지 Vol.25 No.3

본 연구의 목적은 필리핀 보라카이섬에서 시행하고 있는 생태관광 개발(Boracay Actipn Plan)이 주민 삶의 질에 미치는 영향관계에서 책임관광개발(RTPs: Responsible Tourism Practices)의 매개효과를 분석하는 것이다. 환경오염과 난개발로 인해 6개월간 폐쇄된 보라카이 섬의 환경보전, 개발을 위한 새로운 시도가 주민 삶에 어떠한 영향을 미치는지 검증한다는 점에서 의의가 있다. 실증분석을 위해 지역주민 366명을 대상으로 설문조사를 시행하였으며, 위계적 회귀분석을 통해 생태관광개발과 주민 삶의 질과의 관계에서 RTPs의 매개효과를 분석하였다. 분석결과 관광개발 변수 중 비용대비효과, 지역경제성장이 직접적인 영향요인으로 확인되었으며, RTPs 변수 중 지역사회의 인식증대와 지역주민의 생태적 수용능력이 주민의 삶의 질에 영향을 미치는 유의미한 요인으로 분석되었다. 즉 지역주민들은 관광개발이 개인뿐만 아니라 지역사회에 혜택을 제공한다는 것을 인지하고 있음을 시사한다. 따라서 생태보호와 지속가능한 개발이라는 관점에서 주민참여의 중요성과 RTPs를 통한 지역사회 주민의 생태수용능력, 인식증대와도 관련성이 높은 만큼 정책의 이해관계자들은 개발의 계획단계부터 주민참여를 활성화하여야 할 것이며, 주민의 참여와 생태관광의 활성화를 위해서는 정부와 주민간의 적극적인 소통전략이 요구되며, 생태관광개발 종사자에 대한 교육을 제공하여야 할 것이다. The objective of the research is to analyze the effects of tourism development on the quality of life of Boracay residents. The study determined whether responsible tourism practices (RTPs) mediate two identified variables. The effects of the environmental preservation and development of Boracay Island, which has been closed for 6 months due to environmental pollution and indiscriminate development, on the residents should be evaluated. The study utilized questionnaire surveys administered to 366 residents in Barangays via purposive sampling. Results imply that the residents of Boracay Island are well aware of the benefits that tourism development brings to their personal needs and the community. A hierarchical multiple regression analysis showed that RTPs mediate the effects of tourism development on the quality of life of the residents. This study recommends strengthening the synergy of concerned stakeholders, including the local community, for community-related issues to be addressed as early as the initial planning process. To encourage Strategic communication undertakings, such as e-business, are needed to encourage proactive communication from them. Lastly, stakeholders may further boost sustainable tourism development efforts. This includes effective planning that requires proper education and training of people engaged in tourism activities.

HQSAR Study of Microsomal Prostaglandin E2 Synthase (mPGES-1) Inhibitors

Amor A. San Juan,Seung Joo Cho*,Hoon Cho* 대한화학회 2006 Bulletin of the Korean Chemical Society Vol.27 No.10

Microsomal prostaglandin E2 synthase (mPGES-1) is an enzyme that is associated with inflammation, pain, fever and cancer. Hologram quantitative structure activity relationship (HQSAR) was conducted on the series of MK-886 compounds acting as mPGES-1 inhibitors. A training set with 24 compounds was used to establish the HQSAR model. The best model was chosen based on the cross-validated correlation coefficient and the correlation coefficient. The model was utilized to predict the activity of the eight-test set of compounds giving the predictive r2 value of 0.845. The descriptors of the model are based on fragment distinction (atoms, bond and connectivity) and fragment size (2-5 atoms). The atomic contribution maps generated from HQSAR were useful in identifying the important structural features responsible for the inhibitory activity of MK-886 inhibitors. Based on the generated model, the presence of hydrophobic biphenyl group seems to enhance inhibition of mPGES-1 that is in agreement with the previous experiments. In addition, it seems important for a halogen to be substituted to the biphenyl ring and for an acyl group to be attached to the indole moiety for enhanced activity.

Poster Display : Acute Outbreak of Pneumonic Pasteurellosis in a Goat Farm in Namwon: A Case Report

( Gerry Amor Camer ),( Hee Jin Park ),( Sohail Ejaz ),( Muhammad Zeeshan ),( Chae Woong Lim ) 한국수의병리학회 2004 학술대회 Vol.8 No.-

Poster Display : Acute Outbreak of Pneumonic Pasteurellosis in a Goat Farm in Namwon: A Case Report

( Gerry Amor Camer ),( Hee Jin Park ),( Sohail Ejaz ),( Muhammad Zeeshan ),( Chae Woong Lim ) 한국수의병리학회 2004 학술대회 Vol.2 No.-

Posters ( 1998 . 11 . 12 - 17 ) : An Antidermatophytic Agent from Gliricidia sepium ( Jacq.) Staud

(Evangeline C . Amor) 한국응용약물학회 1998 학술대회 Vol.1998 No.1

3D-QSAR Study of Competitive Inhibitor for Acethylcholine Esterase (AChE) Nerve Agent Toxicity

San Juan, Amor A.,Cho, Seung-Joo The Korean Society of Toxicogenomics and Toxicopro 2006 Molecular & cellular toxicology Vol.2 No.3

The cholinesterase-inhibiting organophosphorous (OP) compounds known as nerve agents are highly toxic. The principal toxic mechanism of OP compounds is the inhibition of acethylcholine esterase (AChE) by phosphorylation of its catalytic site. The reversible competitive inhibition of AChE may prevent the subsequent OP intoxication. In this study, three-dimensional quantitative structure-activity relationship (3D-QSAR) was performed to investigate the relationship between the 29 compounds with structural diversity and their bioactivities against AChE. In particular, predictive models were constructed using the comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA). The results indicate reasonable model for CoMFA ($q^{2}=0.453,\;r^{2}=0.697$) and CoMSIA ($q^{2}=0.518,\;r^{2}=0.696$). The presence of steric and hydophobic group at naphtyl moiety of the model may lead to the design of improved competitive inhibitors for organophosphorous intoxication.

Environmental Microbiology / Microbial Diversity : Magnesium Uptake by the Green Microalga Chlorella vulgaris in Batch Cultures

( Hela Ben Amor Ben Ayed ),( Behnam Taidi ),( Habib Ayadi ),( Dominique Pareau ),( Moncef Stambouli ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.3

The accumulation (internal and superficial distribution) of magnesium ions (Mg(2+)) by the green freshwater microalga Chlorella vulgaris (C. vulgaris) was investigated under autotrophic culture in a stirred photobioreactor. The concentrations of the three forms of Mg(2+) (dissolved, extracellular, and intracellular) were determined with atomic absorption spectroscopy during the course of C. vulgaris growth. The proportions of adsorbed (extracellular) and absorbed (intracellular) Mg(2+) were quantified. The concentration of the most important pigment in algal cells, chlorophyll a, increased over time in proportion to the increase in the biomass concentration, indicating a constant chlorophyll/biomass ratio during the linear growth phase. The mean-average rate of Mg(2+) uptake by C. vulgaris grown in a culture medium starting with 16 mg/l of Mg(2+) concentration was measured. A clear relationship between the biomass concentration and the proportion of the Mg(2+) removal from the medium was observed. Of the total Mg(2+) present in the culture medium, 18% was adsorbed on the cell wall and 51% was absorbed by the biomass by the end of the experiment (765 h). Overall, 69% of the initial Mg(2+) were found to be removed from the medium. This study supported the kinetic model based on a reversible first-order reaction for Mg(2+) bioaccumulation in C. vulgaris, which was consistent with the experimental data.

HQSAR Study of Microsomal Prostaglandin E₂ Synthase (mPGES-1) Inhibitors

San Juan, Amor A.,Cho, Seung-Joo,Cho, Hoon Korean Chemical Society 2006 Bulletin of the Korean Chemical Society Vol.27 No.10

Microsomal prostaglandin $E_2$ synthase (mPGES-1) is an enzyme that is associated with inflammation, pain, fever and cancer. Hologram quantitative structure activity relationship (HQSAR) was conducted on the series of MK-886 compounds acting as mPGES-1 inhibitors. A training set with 24 compounds was used to establish the HQSAR model. The best model was chosen based on the cross-validated correlation coefficient ($q^2$=0.884) and the correlation coefficient($r^2$=0.976). The model was utilized to predict the activity of the eight-test set of compounds giving the predictive $r^2$ value of 0.845. The descriptors of the model are based on fragment distinction (atoms, bond and connectivity) and fragment size (2-5 atoms). The atomic contribution maps generated from HQSAR were useful in identifying the important structural features responsible for the inhibitory activity of MK-886 inhibitors. Based on the generated model, the presence of hydrophobic biphenyl group seems to enhance inhibition of mPGES-1 that is in agreement with the previous experiments. In addition, it seems important for a halogen to be substituted to the biphenyl ring and for an acyl group to be attached to the indole moiety for enhanced activity.

Traffic of the Communities around Higher Education Service areas in Bangkok Metropolitan, Thailand

Pastraporn Thipayasothorn Amor,Jintana Nokyoo 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10

The traffic network designed for the communities plan around higher education service areas in Bangkok metropolitan aimed to 1) study the traffic flow in the communities plan around the higher education service areas in Bangkok and vicinity, 2) study the appropriate information used to plan the traffic routes for the particular community’s plan, and 3) provide guidelines for information needed for the traffic routes planning for the certain community’s plan. The data was collected from 400 samples who were regular commuters in the certain area around the higher education service areas in Bangkok metropolitan through sets of questionnaires. Then, the data was analyzed based on the research methodology. According to the result, the researcher found that the city commuting network affecting the accessibility of each area should provide sufficient convenience for the commuting demand and it should be able to connect to other networks as well. Moreover, the traffic of the communities around the higher education service areas in Bangkok metropolitan must be easily understood, accessible, and each route must be used equally.