Indonesia Conference Directory

Corresponding Author
Ika Wahyuning Widiarti

Institutions
Department of Environmental Engineering, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran Yogyakarta 55293, Indonesia

Abstract
Kopi Luhur Dumpsite is a waste dump facility from area surrounds Cirebon City. The Kopi Luhur Dumpsite has 9 hectares area that implements an open dumping system that may cause the spread of flies and rat vectors, release unpleasant odors, and reduce environmental aesthetics. Also, the Kopi Luhur Dumpsite has inadequate leachate treatment plant and methane gas control system. The aim of this study was to assess environmental risk due to dumping activities at the Kopi Luhur Dumpsite using IRBA (Integrated Risk-Based Approach). IRBA examines 27 parameters under three classes, namely, site-specific criteria, waste characteristics at the dumpsite, and those related to the quality of leachate from the dumpsite. Data were obtained through mapping in the field, interviews with managers and communities surround and testing samples in the laboratory. The research results showed that the Kopi Luhur dumpsite has corresponded to moderate hazard level with a total risk index score 575.3536. Therefore, the recommendation actions are immediate rehabilitation of the dumpsite into sustainable landfill.

Keywords
Kopi Luhur Dumpsite, IRBA, risk assessment

Topic
Disaster Management and Environmental Issues

Link: https://ifory.id/abstract/J7PE9zNjdqWb

Corresponding Author
Lilik Eko Widodo

Institutions
Research Group on Earth Resources Exploration,
Faculty of Mining and Petroleum Engineering, Bandung Institute of Technolgy, Bandung, Indonesia

Abstract
The cycle time in mining activities is the time needed by a mining equipment or a combination of several mining equipments to complete one or one series of several particular jobs or tasks. The cycle time in some cases will never be constant but follows a certain distribution with an average and certain standard deviation of time. This is due to the fact that each mining equipment and / or each component of the work varies in time to complet the task. The cycle time of some mining equipments and / or some components of work is basically an arithmetic operation of the variation of cycle time of each individual mining equipment with its individual distribution. Arithmetic operation of several data distributions can be done stochastically by using Monte Carlo method or method with fuzzy number operation. This paper will briefly describe the uncertainty analysis of cycle time using both methods and finally comparing the results of both.

Keywords
Cycle Time, Monte Carlo Method, Random Number, Fuzzy Number Operation

Topic
Mining and Metallurgy Engineering

Link: https://ifory.id/abstract/zxvVj73WJpPb

Corresponding Author
Boni Swadesi

Institutions
(a) UPN Veteran Yogyakarta
(b) Institut Teknologi Bandung

Abstract
Polymer flooding is one of the methods to improve sweep efficiency and reduce water mobility when water channeling takes place in an oil reservoir. Theoretically, if the polymer viscosity increases, the mobility ratio decreases. Thus, the oil sweep becomes more efficient while the recovery factor (RF) becomes higher. However, there is a phenomenon in which polymer with higher viscosity does not always improve oil recovery. One of the factors that influence this phenomenon is the existence of Inaccessible Pore Volume (IPV), so this study is needed to determine the relationship between polymer rheology and the amount of IPV. Two commercial polymers with the same concentration, FP3630S and ChemEOR, were done by rheology testing and injected into a number of sandstone Berea cores. The effluents of salt tracer (potassium iodide) and polymer flood were collected, and their concentrations were measured using atomic absorption spectroscopy (AAS) and UV-Vis spectrometry, respectively. Based on Rheology test in the same concentration, polymer ChemEOR has a higher viscosity, but from the Coreflood test, ChemEOR has smaller oil recovery than FP3630S. The IPV of ChemEOR and FP3630S were 30.6 % and 23.12%, respectively. The size of IPV of a polymer is influenced by the ability of the polymer to increase viscosity, so that the greater the value of the viscosity given, the greater the value of IPV from the polymer. The FP3630S polymer can reach larger rock pores even though in terms of the water-oil mobility ratio is smaller than ChemEOR. With a smaller IPV, the result proves that FP3630 polymer displays an increase of oil recovery compared to ChemEOR polymer.

Keywords
Inaccessible Pore Volume, Polymer Flooding, Coreflood

Topic
Petroleum and Geothermal Engineering

Link: https://ifory.id/abstract/gVn7aJW3bYZF

Corresponding Author
Esha Firnanza

Institutions
a) Lampung University, Engineering Faculty, Geophysics Engineering Department
Jalan Prof. Dr. Sumantri Brojonegoro No.1 Bandar Lampung 35145
*eshafirnanza[at]gmail.com
b) Indonesian Defense University, Defense Management Faculty, Energy Security Department
IPSC Area, Sentul, Sukahati, Citeureup, Bogor, West Java 16810

Abstract
Preliminary survey using refraction seismic method is an important thing to determine boundaries between weathered layer and rigid layer on highway geotechnical survey. The main thing in refraction seismic survey is to do interpretation survey result to accurate subsurface data. This research conducted subsurface velocity modeling using refraction seismic tomography. The purpose on this research is to make 2D velocity model to determine and analyze boundaries between weathered layer and rigid layer lithology for highway construction corresponding to ASTM D 5777 standard on each line from FRMLN field consist of line E2, E3, E4, and E5. Acquisition data using generalized-reciprocal method with several processing data stages consist of static correction, filtering, gain, first-break picking, inversion and tomography modeling. Based on modeling result, there is two kind of weathered layer lithology and three kind of rigid rocks lithology on research location. Weathered layer lithology consist of top soil in velocity 0-375 m/s and weathered layered (soil) in velocity 750-1125 m/s, while rigid rocks lithology consist of tuff in velocity 1500-1875 m/s, silicic tuff in velocity 2250-4125 m/s, and andesite in velocity more than 5250 m/s. Identified layer which occur a weathering in LINE E2 had a thickness variation around 2-6.3 meter, LINE E3 had a thickness variation around 1-5.6 meter, and LINE E5 had a thickness variation around 1-4 meter from surface.

Keywords
Geotechnical, generalized-reciprocal method, tomography, tuff, weathered layered (soil).

Topic
Geophysics,Geomatics and Geochemistry

Link: https://ifory.id/abstract/RP7g9tHedYDL

Corresponding Author
Sabar Gunawan

Institutions
a. Unitomo University Surabaya/STIA LAN Bandung/ Maranatha Christian University Bandung
b. STIA LAN Bandung
c. Maranatha Christian University Bandung

Abstract
This research aims to determine the influence of leadership style and organizational commitment on employee performance at the Wirasakti Kupang Hospital, both simultaneously and partially. In this regard, researchers try to identify variables that affect their performance. The method used is primary data, which is a research instrument sheet in the form of a questionnaire distributed to 52 employees at the Wirasakti Kupang Hospital using probability sampling techniques. the results of calculations and descriptive analysis, it was found that the leadership style possessed by Wirasakti Kupang Hospital was in the good category, the organizational commitment of employees of Wirasakti Kupang Hospital was in the high category and the performance of employees of the Wirasakti Kupang Hospital was in the high category. The results of the research and hypothesis testing carried out showed that leadership style and organizational commitment had a positive effect, or simultaneous direction of employee performance in kupang entrepreneurial hospitals. Partially, leadership style has a positive or unidirectional influence on employee performance at Wirasakti Kupang Hospital and Organizational commitment has a positive or direct influence on employee performance at Wirasakti Kupang Hospital.

Keywords
Leadership Style, Organizational Commitment, Performance

Topic
Human Resource Management

Link: https://ifory.id/abstract/9akYVdnNGtrw

Corresponding Author
Alan Sigit Fibrianto

Institutions
(a) Universitas Negeri Malang
Jl. Semarang No. 5, Malang 65145
*alan.sigit.fis[at]um.ac.id

Abstract
Negative stigma and discriminative treatment are inherent to difable or people with different abilitys life including industrial aspect. This research aimed to find out the representation of difable communitys creative service industry through Difa City Tour and Transport or DCTT in Yogyakarta Indonesia. This qualitative research with single case study approach employed data triangulation to validate data. The data was obtained through observation and in-depth interview with DCTT as a creative service industry for people-with-different ability community (thereafter called difable community) in Yogyakarta Indonesia. The result of research showed that there were some factors underlying the establishment of DCTT: competitive culture, manpower, life background, social gap, job opportunity, public construction on the difable people, varying disabilities developed by difable people, idea creativity, stakeholder support, and desire to change life into the better one. There were such strong capitals as social, economic, cultural, and symbolic in DCTT that were used to maintain the status and position of DCTT in Yogyakarta. Those capitals were intended to establish DCTT creative service industry and were embodied into industrial relation activity of DCTT in Yogyakarta. DCTT became the representation of creative service industry and empowerment for difable community in Yogyakarta Indonesia, thereby being independent and recognized by the public.

Keywords
Creativity; Difable; Representation; Service Industry

Topic
Creative Industries

Link: https://ifory.id/abstract/VJg7Y6QeRaH4

Corresponding Author
Anang Setiyawan

Institutions
(a) Law Faculty, Universitas Sebelas Maret, Surakarta, Indonesia
*anang.setiyawan.sh[at]gmail.com

(b) Management & Business Faculty, Universitas Islam Syekh Yusuf, Tangerang, Indonesia.

Abstract
Industrial Age 4.0 has driven the growth of startup companies rapidly and the existence of startup companies in the world has become a new economic basis for countries. The startup industry is able to encourage new innovations, research, create new jobs and absorb more labor and increase national economic growth. In Southeast Asia, the value of the digital economy currently reaches $ 72 billion and is predicted to increase to $ 240 billion by 2025. The government has a role to regulate, create, develop and accelerate startup companies to become a new economic foundation and absorb the maximum potential of digital economic value. This study would like to see how Indonesia & Singapore formulate policies and regulations to develop startup companies as their economic potential sector. The results of the study can be an input to policymakers to regulate and accelerate their economic sector by using right policy.

Keywords
startup, public policy, economic backbone, industrial age 4.0

Topic
Public Policy

Link: https://ifory.id/abstract/63UWLhRjG4bJ

Corresponding Author
Ari Agung Nugroho

Institutions
Universitas Pendidikan Indonesia ; Universitas Pendidikan Indonesia ; STIA LAN Jakarta ; Universitas Pendidikan Indonesia

Abstract
Financial performance is a analysis to find out the condition of a company based on its annual financial statement and can be taken note of by making use of financial ratio analysis. The author use Earning per Share, Return on Assets, and Operating Profit Margin to know the financial performance. This study aimed to analyze the influence of the financial performance of the stock price on PT Timah Tbk in Indonesia Stock Exchange period 2010- 2018. Independent variables was used in this study is financial performance, consist of Return on Assets (ROA), Price Earning Ratio (PER), Operating Profit Margin (OPM) and Dividend Payout Ratio (DPR). The dependent variable is the stock price and the sample in this study consist data in PT Timah Tbk in Indonesia Stock Exchange in the study period 2010-2018. Analysis of the data used in this study is a multiple linear regression analysis (t-test and f test) were processed with SPSS. From the multiple regression models were used in this study, the results of the partial test (t test) showed that variables ROA, OPM and PER have significantly positive effect on stock prices. Whereas DPR had no significant effect on stock prices. While simultaneously (f test) showed that the ROA, PER and DPR simultaneously influence on stock prices.

Keywords
Financial performance, Return on Assets (ROA), Price Earning Ratio (PER), Dividend Payout Ratio (DPR), stock price, Operating Profit Margin

Topic
Financial Management and Accounting

Link: https://ifory.id/abstract/hgz6yeqNx2Um

Corresponding Author
Herda Prabadipta

Institutions
(a) Communication Management, Universitas Indonesia
Jl. Salemba Raya IV, Jakarta 10430, Indonesia
*herda.prabadipta[at]ui.ac.id
(b) Lecturer of Communication Management, Universitas Indonesia,
Jl. Salemba Raya IV, Jakarta 10430, Indonesia

Abstract
Twitter creates opportunities for researcher to get to know a person thoughts and idea through digital data. It is a perfect place to studying on how users perceive a culture. In this study, researchers felt the urgency to examine how users capture Javanese culture and represent it in social media because researchers are Javanese. Netnography has been applied to various study regarding virtual communities phenomena. This method approached as qualitative by studying on 412 post on Twitter that captured in terms of Javanese wisdoms. These tweets are captured from two years period, from March 2017 to February 2019. The result will present different types of netizens perception on which Javanese local wisdom that most acknowledge or used by user, also to understand their habit for using the terms in which conditions or circumstances. The result can be recommended as preliminary research to understand how people perceived and use Javanese local wisdoms on social media, which can be a basis for social research about Javanese identity and characteristics. Academically, the result can be used to design a research to deeply understanding about modern Javanese culture or the result can be also practically suggested for communication programs that targeting Javanese people.

Keywords
Culture Studies; Netnography; Digital Communication; Javanese Local Wisdom; Social Media

Topic
What are the topics?

Link: https://ifory.id/abstract/2Zf6JXaT9EHD

Corresponding Author
DWI ATMONO

Institutions
(a,c) Economics Education Department,
Faculty of Teacher Training and Education
Lambung Mangkurat University

(b) Post Graduate Program
Lambung Mangkurat University,
Indonesia

Abstract
The aim of this study is to analyze the behavior of river utilization in production activity by Sasirangan businessmen in Banjarmasin. This study using case study approach with few Sasirangans factory owners as the subject. Data collected through observation and in depth interview and analyze with descriptive technique. The result show that few businessmen placed their production activities close to the river for retrenchment reason. They can cut some production cost by using the water from the river to rinse the fabrics after coloring process finished. This activity causing river pollution because the waste from the coloring substance that using chemical materials dropped into the river without filtering process. They choose the chemical materials because the cost is cheaper and it will affected to their business profit. This activity is continuously occurring among them. Even they aware about the negative effects for the river environment but they keep to do it for cost efficiencys reason. There is no legal punishment from local government to protect the river sustainability that can push them to stop this adverse activity so it still practiced by the businessmen of Sasirangan fabric in Banjarmasin.

Keywords
River, Sasirangan Production, Sustainability

Topic
What are the topics?

Link: https://ifory.id/abstract/tp9h7wQRMTEU

Corresponding Author
Rokayah Rokayah

Institutions
1STKIP Sebelas April, Jl. Anggrek Situ No 19 Sumedang, Indonesia
2UIN Sunan Gunung Djati Bandung, Jl. A.H Nasution 105 Bandung, Indonesia

Abstract
The character is the most important education in shaping the personality of students through school learning activities. Forming student characters through learning activities by integrating character values into learning includes integrating local character values. Learning that integrates character values needs to be continuously developed with various efforts, one of which is by developing scientific works. This study aims to uncover integrative learning that contains character values that support student character formation. The method used is participatory qualitative by using exposes facto data and triangulation using interview techniques. The research subjects were 49 students in public and private elementary schools in the city of Bandung. They are between 9 years and 10 years old and are in grade 5. The instrument used is a list of local character values and triangulation through interviews. The results of this study indicate that: (1) the skills of students who have values of local characters vary based on their family background and environment. (2) most students still have low knowledge of the insights of local characters. (3) knowledge about local characters obtained by students through integrated learning with local character education. This study concludes that elementary school students with an age of 9 to 10 years in the city of Bandung sound local character skills that are still low.

Keywords
integrative learning, local character, and value character.

Topic
What are the topics?

Link: https://ifory.id/abstract/jcu3hZP8zYLf

Corresponding Author
Budi Suryadi

Institutions
Fakulty Social Science and Political Science, Lambung Mangkurat University

Abstract
Figures for turnout in the general election of legisltif year 2014 in the city of long beach shows nothing about 76.02%. There is nothing this turnout figure is highest close to the county or city in the province of South Kalimantan. Turnout in the legislative elections this represent the political behavior of voters in determining his political considerations the behavior of voters in legislative elections the year 2014 in the city of long beach is composed of three types, namely the type of voter behavior is rational, the traditional voter behavior type and the type of behavior voters skeptical. each type of voter behavior has its own base in accordance with their characteristics. then the voter behavior is influenced by several factors, namely the education factor, factor is experience and emotional factors. Suggestions in this study the need for an increase in voter behavior is rational and emotional political behavior reduction

Keywords
political behavior, voters, legislative elections

Topic
What are the topics?

Link: https://ifory.id/abstract/LjvunZtqkGEP

Corresponding Author
M. ZULFIKAR AL FARIQI

Institutions
a)Master Student of Health Promotion Program, Faculty of Public Health, Diponegoro University
b)Faculty of Public Health Diponegoro University

Abstract
Background : Diabetes mellitus in Indonesia is increasing every year. Diabetes mellitus can be prevented, delayed and slowed down by controlling the level of stress so that blood glucose levels can be controlled. Purpose : The purpose of this study was to analyze the effect of Islamic spiritual guidance on changes in blood sugar levels through stress levels in patients with diabetes mellitus type 2 who participate in diabetes exercise at PERSADIA Ungaran Hospital and Ambarawa Hospital Semarang Regency. Methods : The research method used was quasi-experimental design with pretest-posttest two group design. The research instrument used questionnaire and digital glucometer. The research sample amounted to 22 respondents for the intervention group and 22 respondents for the control group. Data analysis using application of SPSS Statistics 17 version with the Wilcoxon test, t-test dependent, spearman rank correlation. Results: The results showed that there was a significant decrease in stress levels in the intervention group given Islamic spiritual guidance with p value = 0,000 and there was a significant decrease in blood sugar levels in the intervention group with p value = 0,000. There is a significant relation between stress levels and blood sugar levels with p value = 0.033. Conclusion : Diabetes mellitus patients are expected to control stress by following Islamic spiritual guidance and doing diabetes exercises to control blood sugar levels.

Keywords
Islamic spiritual guidance, blood sugar levels, diabetes mellitus, diabetes exercise

Topic
Health Promotion and Education

Link: https://ifory.id/abstract/dxmuvrHyZwpU

Corresponding Author
Imran Ahmad

Institutions
a) School of Medical Sciences
b) School of Dental Sciences

Abstract
INTRODUCTION: Continuation of drug use refers to any use of drugs among patients receiving methadone treatment in health clinics. Methadone maintenance treatment is provided for people with addiction to opioids as a part of harm reduction programme, especially reduction in transmission of HIV. OBJECTIVES: This study is to determine the prevalence of continuation of illicit drug use and its associated factors among patients attending methadone clinics. METHODS: A cross-sectional study was conducted in August 2018 involving patients attending methadone clinics in Kota Bharu, Kelantan. Multistage stratified cluster sampling was employed. The data were collected using the questionnaires for demographic data, Hatta Islamic Religiosity Score (HIRS) 96, WHOQOL-BREF (Malay version) and also from patients- clinic files. Data were analysed by single and multiple logistic regressions using SPSS version 24. RESULTS: A total of 150 patients were involved with a response rate of 94.3%. The prevalence of continuation of drug-use was 38.7% (n=58) and 40.7% (n=61), as measured by self-reported drug use within the last 30 days and by urine test positive for drugs, respectively. Multiple logistic regression analysis showed that being Hepatitis C-infected [OR (95% CI: 0.45 (0.21, 0.95)] and higher quality of life score in the domain of psychological health [OR (95% CI: 0.98 (0.95, 1.00)] were associated with reduced continuation of drug use by self-reported use. While for urine positive for drugs, being Hepatitis C-infected [OR (95% CI: 0.27 (0.12, 0.62)] and higher quality of life score in the domain of physical health [OR (95% CI: 0.97 (0.94, 0.99)] were associated with reduced continuation of drug use. CONCLUSION: The prevalence of continuation of drug use among patients attending methadone clinics in Kelantan was high. Those with positive Hepatitis C status and those who scored higher in quality of life in the domain of physical and psychological health, were found to have reduced risk for continuation of illicit drug use.

Keywords
illicit drug use; methadone clinics, protective factors

Topic
Communicable and Non Communicable Diseases

Link: https://ifory.id/abstract/vkBxHbu2ZEtX

Corresponding Author
Dwipajati -

Institutions
Nutrition Department, Health Polytechnic of Malang(1); Department of Physiology, Medical Faculty of Universitas Sebelas Maret(2); Faculty of Medicine, Universitas Sebelas Maret(3)

Abstract
Some patients with type 2 diabetes mellitus (T2DM) have high expression of dipeptidyl peptidase 4 (DPP4) enzyme that breaks down glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide 1 (GLP1) hormones. During eating carbohydrate, K and L cells in the human small intestine produce GIP and GLP1 respectively that stimulate pancreatic β cells to release insulin. Recent evidence has revealed that fruit consumption before meals reduces fasting blood glucose level in patients with T2DM. Therefore, the aim of this study was to investigate the effect of fruit consumption before meals on DPP4 activity among patients with T2DM. A randomized control trial study with pre-posttest control group design was performed in 19 T2DM patients. They were randomly divided into 2 groups: 10 in the control (C) group eating a standardized diet and the other in the treatment (T) group eating fruit before consumption of standard diet. Fasting and post prandial serum DPP4 activities were measured using a H-Gly-Pro-pNA substrate in the 1st and 7th day-s intervention. Kruskal Wallis and paired t tests were used to analyze mean DPP4 activity in both groups with p value < 0.05. In 1st day intervention, mean fasting DPP4 activity in the C group (189.42+116.27 nmol/ min/ mg protein) was higher than mean fasting DPP4 activity in the T group (121.75±74.86 nmol/ min/ mg protein). Reduced post prandial DPP4 activity was found in the C group (111.84±71.05) and increased in the T group (143.99+72.41). After 7 days intervention, reduction of fasting and post prandial DPP4 activities was observed in the C and T groups respectively. Meanwhile, mean fasting DPP4 activity in the T group remained unchanged and increased post prandial DPP4 activity was in the C group. Fruit consumption before meals reduces fasting and increases post prandial DPP4 activities in patients with T2DM.

Keywords
Type 2 diabetes mellitus, Fruit consumption, DPP4 activity

Topic
Nutrition and Functional Food

Link: https://ifory.id/abstract/UALpfXxMZQCH

Corresponding Author
JERRY VILLARUEL MANLAPAZ, RN, EdD, PhD

Institutions
1, 2, 3,4,5,6,7,8,9 Senior High School, University of Santo Tomas, Manila, Philippines

Abstract
Background: Dengue has always been a major public health problem in the Philippines and is endemic in all regions of the country. Because of the growing number of incidence of dengue in the country, many were convinced to vaccinate their children with anti-dengue vaccine. Dengvaxia is an anti-dengue vaccine licensed and approved for use by the government in December 2015. However, the second quarter of 2016 saw uproar and issues about the vaccine, causing panic and fear among parents of the vaccinees. Immediate suspension of the vaccine was ordered due to the multiple controversies following the Dengvaxia issue. Purpose: The main purpose of the study was to identify and describe the experiences of the parents who have children vaccinated with Dengvaxia. Methods: The study utilized a qualitative Hermeneutic phenomenological research design. Using a semi structured interview guide questionnaire, a total of 14 parents of Dengvaxia-vaccinated children were purposively selected and interviewed. Data were analyzed using Colaizzi-s phenomenological method in data analysis. Results: The experiences of the parents revealed four themes and fifteen categories. These themes are as follow: drives for participation, emotional disequilibrium, damage controls, and the phenomenon aftermath. Conclusion: Parents experienced difficult times emotionally, psychologically and physically especially at the height of the controversy while focusing on the health and well-being of their children. The mental trauma faced by the parents due to the fear for their children-s lives was an adversity that they had to hurdle through. The entire experience put uncertainties towards the immunization programs of the government but the lessons learned from the experience exhibited every family-s resilience in the midst of the controversy.

Keywords
Keywords: Dengvaxia, experiences, parents

Topic
Communicable and Non Communicable Diseases

Link: https://ifory.id/abstract/AUg8znXGdvDP

Corresponding Author
Risvan Kuswurjanto

Institutions
Indonesian Sugar Research Institute

Abstract
Near infrared (NIR) spectroscopy appears as a promises method for faster analysis method in replacement of conventional analysis method. In this work, NIR was used as a replcement for conventional analysis method in sugarcane juice analysis.. The cane juice samples for this study were taken from the hydraulic press juice in the core sampler system at Glenmore Sugar Factory. NIR spectroscopy equipment used was FOSS DS 2500. The partial least square regression (PLS) was used to develop calibration model. The NIR results were evaluated from correlation coefficient (r2), low standard error of calibration (SEC) and high ratio of prediction to deviation (RPD). The experimental results show that for %brix analysis : r2 = 0.988, SEP = 0.333, RPD = 5.441and for %pol analysis:, r2 = 0.986, SEP = 0.283, and RPD = 6.125. The results have shown a good potential of NIR Spectroscopy for cane juice quality analysis as replacement of conventional analysis methods. ory instrument.

Keywords
NIR Spectroscopy, partial least square regression (PLS), cane juice, brix, pol

Topic
Postharvest and food engineering

Link: https://ifory.id/abstract/d6YbXPKLDTFE

Corresponding Author
Dewi Sartika

Institutions
1Department of Agroindustrial Technology, Faculty of Agricultural Engineering and Technology, Bogor Agricultural University, Bogor 16680, West Java, Indonesia.
2Faculty of Agriculture, Muhammadiyah University of Makassar, Makassar 90221, South Sulawesi, Indonesia

*khaswars[at]yahoo.com

Abstract
Abstract. Kapok is a source of natural fiber in addition to cotton, which availability is abundant and contain high cellulose but not been utilized optimally. This study aimed to determine the optimal conditions of sulfuric acid concentration and hydrolysis time in the production process of nanocrystalline cellulose (NCC) from kapok fiber. The research was conducted in several stages, namely the delignification with alkali hydrothermal, bleaching with alkaline hydrogen peroxide agents, isolation with sulfuric acid solutions, and NCC characterization. The optimization used Response Surface Methodology (RSM) with Central Composite Design (CCD), which consisted of two factors, namely H2SO4 concentration and hydrolysis time. The optimized parameter was the crystallinity degree of the NCC. NCC characterization included functional group analysis with Fourier Transform Infrared Spectroscopy (FTIR), surface profiles and dimensions by Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The results showed that the optimum condition of NCC isolation from kapok fiber was obtained at 54.46% (b/b) H2SO4 with hydrolysis time of 48.96 minutes, resulting in a maximum degree of crystallinity of 71.8%. The hydrolysis process with H2SO4 caused a change in the NCC functional group. NCC had a diameter of about 11.2 nm and high thermal stability that potential for various composite materials

Keywords
acid hydrolysis, kapok fibre, nanocellulose, Response Surface Methodology

Topic
Biophysics engineering

Link: https://ifory.id/abstract/WzKepHbTwyYX

Corresponding Author
Ilham dodi Trisna

Institutions
Universitas Negeri Medan, Fakultas Linguistik Terapan Bahasa Inggris (LTBI)

Abstract
The paper discusses the politeness strategies conducted in Mata Najwa TV Talk Show. The objectives of this study were to find out the types of politeness strategies used by Anies Baswedan as the interviewee in Mata Najwa talk show program, and to investigate the reasons of the types of politeness strategies were used. The result of the research shown that all types of politeness strategies used in Mata Najwa talk show program. Based on the analysis, there are 37 utterances containing politeness strategies used by Anies Baswedan. In detail, he uses the strategy of bald on record 7 times or 18.9%, positive politeness 20 times or 54%, negative politeness 9 times or 24.4%, and off record once or 2.7%. The most frequent politeness strategy used by Anies Baswedan is offer and promise which belong to positive politeness strategy. In general, he uses politeness strategies to maintain and build good relationship and to avoid a deep evaluation because of the show broadcasted on television station.

Keywords
politeness strategies, bald on record, positive politeness, negative politeness, off record, face threatening act (FTA), mata najwa, talk show.

Topic
Social,Language and Cultural Education

Link: https://ifory.id/abstract/D9Q23rLyFuNb

Corresponding Author
Dyah Wuri asriati

Institutions
Center for Plantation Based Industry, Agency for Research and Development of Industry, Ministry of Industry, Jl. Prof. Dr. H. Abdurahman Basalamah No. 28 Makassar, Indonesia

Abstract
The cocoa bean shell (CBS) is a valuable by-product obtained from the chocolate industry. It is rich in protein, minerals, ash and some valuable bioactive compounds. One of the post-harvest processes affecting the mineral contents in CBS is fermentation. The purpose of this study is to determine the mineral contents in CBS of Sulawesi 1, Sulawesi 2, and MCC 02 clones for 24, 48, 72, 96, and 120 h of fermentation. Method analysis was used Atomic Absorption Spectrophotometer. Research will be conducted at the Laboratory of Chemical and Microbiology Testing, Center for Plantation Based Industry. The results showed that types of clones, fermentation time, and their interaction affect mineral contents in CBS. The highest mineral contents of CBS were Ca in Sulawesi 2 clone (48 h), Mg (96 h) and Na (48 h) in Sulawesi 1 clone, while K (24 h) and Zn (120 h) in MCC 02 clone. Total mineral contents of CBS were significantly affected by fermentation and types of clones. Keywords: Cocoa bean shell, fermentation, minerals, Sulawesi 1, Sulawesi 2, MCC 02,

Keywords
Cocoa shells, Sulawesi 1, Sulawesi 2, MCC 02, Fermentation, Minerals

Topic
Postharvest and food engineering

Link: https://ifory.id/abstract/TjBCaF8DmGUH

Corresponding Author
LISNA RIFKADIANA SIRAIT

Institutions
UNIVERSITAS NEGERI MEDAN

Abstract
ABSTRACT This study was concerned with the use of speech acts in ILC (Indonesia Lawyers Club) Talk show program. The objective of this study was to describe the types of speech acts used by the host and the guests of ILC. Qualitative content analysis method was applied in this study. The sources of data were the host and the guests in ILC. The data of the study were the sentences and the phrases gathered from the conversation in the episodes of ILC. The finding of this study showed that four types of speech acts, namely representative, directive, commissive, and expressive were used by the host and the guests of ILC, while declarative speech act was not found at all in the episodes of that talk show program. The dominant type of speech act used by the host was directive, while the guests dominantly used representative speech act. Key words: Speech Acts; Indonesia Lawyers Club; and Talk show program.

Keywords
SPEECH ACTS, INDONESIA LAWYERS CLUB, TALK SHOW PROGRAM

Topic
Social,Language and Cultural Education

Link: https://ifory.id/abstract/HAU9dNaPGZ6u

Corresponding Author
Muh Restu Ray Amir Sulaiman

Institutions
a) Food Technology, Hasanuddin University
Jl. Perintis Kemerdekaan KM.10, Tamalanrea Indah, Tamalanrea, Kota Makassar, Sulawesi Selatan 90245

Abstract
The stages of post-harvest processing have a very large influence on the yield and quality of rice produced. At the time of grinding grain, husks and bran are often wasted and used as animal feed. Whereas, we know that the nutritional content is high. Through the process of germination of grain, the nutrient content in husks and bran can be used to increase the nutritional content of rice. The purpose of this study was to determine the effect of grain immersion and germination on the quality of rice produced. The method of this research was germinating grains by variation of soaking and incubation time. The duration of grain soaking, 12, 18, and 24 hours and incubation time period, 18, 24, and 30 hours. The parameters of this research, including ash content, protein, thiamin, Fe, Mg, yield of rice milled, physical quality, and organoleptic test. The data of this research was processed and tested by complete randomized design with one factorial. The result showed, ash content, protein, organoleptic test (color and taste) of rice was a significantly different at 5% level on each treatment. For other parameters, thiamin and physical quality was significantly different at 1% level on each treatment. The best treatment during the germinating grains process towards the quality of rice was soaking at 12 hours and incubation time 30 hours with length of grain sprout was 1 cm.

Keywords
Rice; Grain Germinating; Incubation

Topic
Postharvest and food engineering

Link: https://ifory.id/abstract/Ddg2zA3NGmQ8

Corresponding Author
MI-RAJ FUADI

Institutions
Faculty of agricultural Technology, Gadjah Mada University, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55281, Indonesia

Abstract
The process of fertilization is one of the phase that is very important in improving the quality and quantity crops. The needs of plants nutrient on one stretch of the fact that not entirely uniform. In addition the use of chemical fertilizer continously with the doses increasing each year can upset the balance lands nutrient therefore it is necessary variable-rate liquid fertilizer applicator to set a dose of fertilizer required by the plant. This study attempts to design and test the performance of variable-rate liquid fertilizer applicator and soil nutrrient test. The applicator can be used to 4 line the soybean plant with distance cropping 40x20 cm. This applicator can control travel speed and dosage of fertilizers that were out of 4 Nozzle. Evaluation and its performance tested in the laboratorium. Discharge that was issued on PWM motor sprayer variations 40 to 100% produce discharge markedly dissimilar variations on each of the PWM sprayer. In application uniformity evaluations use the coefficient of variation (CV). The coefficient of variation of the discharge range 2.71-12.37% and there is a diversity of N, P and K soil contents in each land tested although the changes are not too different.

Keywords
Variable rate, Liquid fertilizer, Precision farming

Topic
Energy and agricultural machinery

Link: https://ifory.id/abstract/yxDdkhEzpFHq

Corresponding Author
Fika Sholeha Ilyas

Institutions
a) Food Technology, Hasanuddin University
Jl. Perintis Kemerdekaan KM. 10, Tamalanrea Indah, Tamalanrea, Kota Makassar, Sulawesi-Selatan, 90245
b) Food Science, Kagawa Univeristy
2393 Ikenobe, Mikicho. Kita, Kagawa. Japan. 761-0795

Abstract
Pulu mandoti is a variety of red rice which has a unique aroma. Pulu mandoti rice is only able to grow in two regions, namely salukanan dan kendenan, district of enrekang, South Sulawesi province. However, the volatile aromatic compound has not been studied. Therefore the objective of the research is to study the aroma profile and identify key aroma compounds in pulu mandoti. For identify the aroma profile of pulu mandoti, white rice and black rice from Enrekang analyses. Twenty-five volatile compounds and forty volatile compounds were identified by gas chromatography-mass spectrophotometry using simultaneously stem distillation for extract aroma compound from rice matrices. Several of volatile compound such as hexanal, 2-pentyl furan, 1-pentanol, 2-acetyl-1-pyrroline, 1-hexanol, 1-octen-3-ol, 1 heptanol, benzaldehyde. All rice from the district of Enrekang has 2-pentyl furan. The pleasant aroma of pulu mandoti salukanan and pulu mandoti kendenan are probably due to 2-acetyl-1-pyrroline.

Keywords
flavor chemistry, SDE, pulu mandoti

Topic
Postharvest and food engineering

Link: https://ifory.id/abstract/CZWDfURKXcJx

Corresponding Author
Andi Nur Amalia

Institutions
Center for Plantation Based Industry
Ministry of Industry

Abstract
Fatty Acid Sorbitol Ester (FASE) is sorbitol ester from fatty acid with esterification degree point ranges from one to six. FASE with esterification degree above three can be used as fat replacer and below three can be used as surfactant. The aim of this study are to determine optimum conditions which include temperature, time, and concentration of papaya latex lipase enzyme, sorbitol, Fatty Acid Methyl Ester (FAME) in the synthesis of FASE as biosurfactant and to know the characteristics of FASE. This research consists of three phases, that are preparation of papaya resin and making of FAME, determination the optimum conditions (temperature, time, and enzyme concentration) of FASE synthesis by using Response Surface Methodology (RSM). The last phase is characterization of FASE. FASE synthesizes conducted by sorbitol esterification with palmitat-stearat FAME by using papaya lipase as catalyst. The result shows that the optimum condition of FASE synthesis at 41,02C, 52,35 minutes, with papaya lipase concentration of 10,30 percent and sorbitol conversion into FASE 31,43 percent. Biosurfactant FASE has melting point 27-30C, smoke point 140C, refraction index 1.44, and HLB value 7.5. 1percent FASE can hold emulsion of water in oil for 92 minutes.

Keywords
sorbitol, fatty acid methyl ester, papaya lipase,esterification, response surface methodology

Topic
Postharvest and food engineering

Link: https://ifory.id/abstract/xD4vch6m29nB

Corresponding Author
Fransiscus Benhardi Wastuwidya

Institutions
Departement of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

Abstract
Mining activities have a positive impact on the economy but have a negative impact on the environment due to the emergence of acid mine drainage through this activity. Conventional acid mine drainage treatment is an activity that requires high energy and costs, so it is necessary to study economic and sustainable acid mine drainage treatment processes. The development of acid mine drainage treatment involves the use of microalgae for remediation, or commonly referred to as phycoremediation. The obstacle in the application of mine acid water treatment is the characteristics of wastewater which limits the growth of microalgae, where acid mine drainage has a high metal content, and low pH. In this study, acid mine drainage with different concentration was used as a growth medium for Nannochloropsis sp. and growth kinetic of Nannochloropsis sp. is investigated, as well as the effect of metal exposure and pH variation on the development of Nannochloropsis sp.. The output of this study is expected to be able to provide an overview of the possible application of phycoremediation as a biological acid mine treatment process.

Keywords
phycoremediation, acid mine drainage, microalgae, mining, remediation

Topic
Other Agricultural and biosystems topic

Link: https://ifory.id/abstract/z8LbX92feEj3

Corresponding Author
Byoung-Kwan Cho

Institutions
Department of Biosystems Machinery Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, South Korea

Abstract
Wireless magnetoelastic (ME) biosensor was designed to detect one of the most popular foodborne pathogen, Escherichia coli (E. coli) O157H7. Binding of the bacteria to the antibody on the gold-coated ME sensor surface changed the resonance frequency of the sensor under the magnetic field, which was quantified by a network analyzer. The response of the sensor to the increment of the concentration of E. coli was investigated. A detection limit of 4.5x105 CFU/mL with a sensitivity of 4.7 kHz were achieved by the sensor with the dimension of 1x0.2x0.023 mm3. The immobilization of antibody-antigen was proven with the fluorescence microscopy which measured the fluorescence dye at the antibody to confirm the successful performance of the immune response on the sensor surface. The results demonstrate that the wireless ME biosensor has good potential to detect E.coli rapidly and efficiently.

Keywords
Food safety, Biosensor, Foodborne pathogen, E.coli

Topic
Biophysics engineering

Link: https://ifory.id/abstract/xgw8BuTEJ2Ha

Corresponding Author
Byoung-Kwan Cho

Institutions
Department of Biosystems Machinery Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, South Korea

Abstract
Early yield estimation of tangerine is crucial to predict market price at harvesting time, which helps farmers to take precautions to ensure their minimum income. The conventional method for the yield estimation based on human eyes is inaccurate, subjective, and time-consuming. Hence, the demand for the development of accurate, rapid, and automated yield estimation methods has been increased. In this study, an advanced image analysis technique, convolutional neural network (CNN) was used to detect tangerines in the trees at the unripe stage. The CNN transfer learning model was designed based on ResNet-50 of which the last 10 network layers were modified to be suitable for tangerine detection. Images from 130 tangerine trees were fed into the constructed CNN model for training followed by validation. The model could distinguish unripe tangerines from green leaves, stems, and various backgrounds with an over 92% accuracy. The result demonstrates that the developed CNN model has potential to be used for the early estimation of tangerine yield.

Keywords
Yield estimation, image analysis, tangerine, artificial intelligence

Topic
Other Agricultural and biosystems topic

Link: https://ifory.id/abstract/k8F3xg2KQyTw

Corresponding Author
Nikmah S.TP

Institutions
a) Hasanuddin University
Jalan Perintis Kemerdekaan KM 10 Tamalanrea indah, Tamalanrea, makassar city, south sulawesi 90245
b) Faculty of Agriculture, Magister Programme of science and food technology

Abstract
Rice is the staple food which nutritious and important for humans daily consumption. The nutrients content in rice can be lost or reduced during the grains process. A method that can be implemented to prevent or reduced the risk of loss of nutrients content in rice is by germinating grains process. The germinating grains will increase the nutrient content of rice and grain itself. the grain will be soaked in water for several hours with variations in temperature and humidity then squeezed to germinate. The purpose of this study was: 1.) To analyze the effect of water temperature and humidity on soaking grain for the quality of rice produced. 2) to know the best temperature and humidity treatment for the quality of rice produced. The method of this research was germinating grains by variation of temperature and humidity. The variation of temperatur, 25, 30, and 35 oC 24 and those humidity, 80, 90, and 100 %. The parameters of this research, including Ash content, protein, thiamin, riboflavin, B12, mineral (Fe, Mg, Ca), antioxidant activity, water content, yield of rice milled, quality of each component, and organoleptic test. The data of this research was processed and tested by complete randomized design with one factorial, if the data found has a significantly different, data will be tested further with Duncan test. The result showed the data for Ash content, protein, color and taste of rice was a significantly different at 5% level on each treatment. For other parameters, thiamin and quality of each component was significantly different at 1% level on each treatment. The conclusion of this research, 1) Temperature and humidity variations on soaking grain can increase thiamin, riboflavin, B12, minerals, antioxidant activity, and protein levels

Keywords
rice ,grain garmination, soaking ,Temperature, Humidity

Topic
Postharvest and food engineering

Link: https://ifory.id/abstract/YWCzrA4279gJ

Corresponding Author
Panca Suci Widiantoro

Institutions
(a)Program Studi Teknik Perminyakan , Akademi MIGAS Balongan, Indramayu.
(b)Program Studi Teknik Perminyakan, Fakultas Teknologi Mineral, UPN “Veteran” Yogyakarta.

Abstract
Gas Well PCA was produced in February 1994. This well is produced commingle of 2 reservoirs A and B. DST result shows both two reservoirs have contrast deliverability. The last production test shows gas rate 7.28 MMSCFD. This well purposed to further workover program to obtained optimum recovery. Integrated production modelling is essential for well performance analysis, enhancement of the production system. Gas well performance cannot be analyzed without considering the reservoir, the flowline and the processing facility, as each of these components affect the operation of the entire production network. This study will take into account the effect of comingle of 2 layers with contrast deliverability by building integrated production model. The Inflow Performance Relationship (IPR) Curve will be analyzed each reservoir to know each production performance. History matching analyses also performed to check the reliability of model in dynamic condition. To achieve the accurate history matching results, the simulation model was run based on the available historical production data. Based on this study, current recovery of A reservoir was 55%, B reservoir was 75% and reservoir B already water out. It is recommended to do workover on this well by isolate reservoir B then re-perforate reservoir A and produce gas only from reservoir A to get optimum recovery.

Keywords
Commingle Gas Well, Integrated production modeling, Workover

Topic
Petroleum and Geothermal Engineering

Link: https://ifory.id/abstract/pafzkJGuh8yW