Indonesia Conference Directory

Corresponding Author
Vivi Novianti

Institutions
School of Life Sciences and Technology, Institut Teknologi Bandung

Abstract
Biodiversity studies, aside of revealing hidden species from basic, conventional methods to sophisticated technologies, also have a number of obstacles. Our study showed that almost all variable widespread species comprised of multiple species. In the other hand, some endemic species might be found to be a synonym of a widespread species and a reasonable explanation is in place. Tectonic plates of Indonesia is found to be a very effective way to explain speciation, but in the other hand also raised some issues concerning species definition. Despite of the fast scientific progress in all aspects of science and technology, many other biodiversity aspects, such as ecology, niche, behavior, reproductive strategy, physiology, species introduction in the past, etc., received little attentions and progressed slowly, especially technology which needs the handing of living organism.

Keywords
biodiversity richness, species concept, continental plate, biogeography, unique phenomenon

Topic
Bioconservation

Link: https://ifory.id/abstract/HaDmVTuzN6Qr

Corresponding Author
Abdul Kholiq

Institutions
Universitas Pendidikan Indonesia

Abstract
The Research aimed at investigating the roles of Facebook as a media to provide counseling service and to give useful information on career path for students. A junior high school teacher in Bandung, Indonesia used Facebook as one of the guidance and counseling services for students. She used Facebook to give information and help the students in preparing their career. The study used qualitative methods with narrative research design. The data were collected through interview. The result of the study, based on success analysis, indicated that guidance and counseling in schools was developing to be more successful as Facebook was involved to give services. The significant results were implied from the increasing percentage of students who graduate from school which recently achieved 100% and many of them who continue to senior high school. In addition, the Facebook network also helps alumni to communicate with school counselor who help them to continue their studies to reputable colleges.

Keywords
Guidance and Counseling, Facebook, Career Services

Topic
Learning / Teaching Methodologies and Assessment

Link: https://ifory.id/abstract/taVNdxXLzUy6

Corresponding Author
Danial Mursyd

Institutions
1) Student Postgraduate Department of Biology Education, Faculty of Math and Science, University of Malang, Indonesia
2) Department of Biology, Faculty of Math and Science, University of Malang, Indonesia
3) Department of Geography, Faculty of Sosial Science,University of Malang, Indonesia

a) fatchur.rohman.fmipa[at]um.ac.id
b) mursyddanial94[at]gmail.com

Abstract
Research on insect communities was carried out in different zones in the monsoon forest in Baluran National Park, Situbondo, East Java. This study aims to identify and describe the composition of taxa, the level of diversity, evenness and wealth of taxa in sheltered areas and exposed to the monsoon forest of Baluran National Park. The study was conducted from July to October 2018. Sampling was done by purposive sampling technique with the direct sweeping method, light trap method, and pitfall trap method. The results showed that the composition of insect taxa in both areas had moderate diversity criteria with index values in the protected area 1.72 and exposed area 1.79. The taxation evenness index values in the two areas are classified as evenly with the area evenness index being 0.51 and the exposed area 0.59. The tax wealth index value in the sheltered area is 3.52 and the exposed area is 2.9 with the category obtained being medium.

Keywords
Insect Communities, Monsoon Forest, Baluran National Park

Topic
Bioconservation

Link: https://ifory.id/abstract/rz6HZqY4XfkK

Corresponding Author
Abdulkhaleq Al-Rawafi

Institutions
Universitas Pendidikan Indonesia

Abstract
Apologies are the most fundamental strategies for remedying offences and reflecting the degree of the speaker-s politeness. However, Arabic textbooks in boarding schools in Indonesia lack of materials that are very required to help students to develop their pragmatic competence of the apology speech acts in Arabic. This study assumes to investigate, explicitly, the language of the students- apologizing in boarding schools in Indonesia and enhancing the students- pragmatic competence in a non-native language; Arabic. Two-hundred one informants were chosen purposively; one-hundred and one male participants and one-hundred and one female participants. Informants were assigned to fill in a Discourse Completion Task (DCT) questionnaire consists of eight situations about the boarding school rules. The findings showed that the boarding school students employed apology strategies that are vary from the Arabic standards of apologizing to some extent. The students overused the head act strategy expression of regret. In other words, the students overused the expressions afwan and asif to remedy light and serious offences. These two expressions are used by Arabs to remedy light offences only. The students believe that the apology strategies are universal so they transfer directly, the Head Act strategies in particular, from L1 into L2. Thus, in order to enhance the BSS-s realization of the speech acts of apologizing in Arabic, it is a requisite to develop the current textbooks that may develop their pragmatic knowledge.

Keywords
Apologizing; Pragmatic Competence; Speech Acts; Boarding School Students BSSs

Topic
Other Areas of Education

Link: https://ifory.id/abstract/4RqzcnvQgrjE

Corresponding Author
Uun Yanuhar

Institutions
1 Aquatic Resources Management Departement, Faculty of Fisheries and Marine Sciences, Brawijaya University.

2 Master Program of Aquaculture, Faculty of Fisheries and Marine Sciences, Brawijaya University

Abstract
Humpback grouper (Cromileptes altivelis) is one of superior commodity that are easily cultivated in the fisheries sector in Indonesia. But, there is one of the difficulties in humpback grouper cultivation is Viral Nervous Necrosis (VNN) infection. The existence of VNN can be transmitted vertically and horizontally, according to water quality and natural feed (plankton) consumed by groupers. Therefore, this study conducted an observation of the factors thought to affect the presence of VNN seen from the identified plankton. This study used descriptive method. Water sampling, plankton and fish was carried out 3 times with a one-week interval in floating net cages in the Gulf of Sendang Biru Beach, Malang Regency. The results obtained by 5 phylum of phytoplankton, there are Chlorophyta division (3 genera), Phragmophyta (1 genus), Diatom (2 genera), Cyanophyta (1 genus) and Bacillariophyta or Chrysophyta (2 genera). Zooplankton consists of 4 phylum, there are Arthropoda (7 genera), Mollusca (1 genus), Tracheophyta (1 genus) and Rotifera (1 genus). Whereas, plankton that were found in the stomach of groupers mostly Bacilariophyta and a small portion of Cyanophyta and Phragmophyta. Based on the results of plankton identification, showed that plankton was not infected with Viral Nervous Necrosis (VNN) and indicated the infecction of Viral Nervous Necrosis (VNN) occurs not because of the plankton factor in the floating net cages but vertically which is the spread from the parent to the larvae.

Keywords
Plankton; Cromileptes altivelis; Viral Nervous Necrosis.

Topic
Biotechnology

Link: https://ifory.id/abstract/EmQgHN8L9wpV

Corresponding Author
Agus Ramdani

Institutions
Universitas Mataram

Abstract
Critical thinking ability is an important thing that needs to be developed for the future of students. However, this has not been facilitated properly in the learning process of science. This study aims to develop inquiry-based science learning devices that are valid, practical, effective to improve students critical thinking skills. This R and D study adapted the 4D model (define, design, develop, disseminate) which was integrated with lesson study activities. The trial subjects in this study were students of class VIII SMPN in the city of Mataram. The development of learning devices uses lesson study activities (plan, do, see) that involve SMPN science teachers in the city of Mataram. . Product feasibility testing is carried out by experts using the validation instrument prepared by the researcher. Testing the practicality of the learning process using the implementation observation sheet, teacher response questionnaire, student response questionnaire and observation sheet of students critical thinking abilities. The results of data analysis show that learning devices are in the category of high validity, high practicality and effective for improving students critical thinking skills. In conclusion, the device of inquiry-based learning model developed through lesson study activities can be used to improve students critical thinking skills

Keywords
4-D Model, lesson study, inquiry-based learning, critical thinking skill

Topic
Curriculum, Research and Development

Link: https://ifory.id/abstract/j3nDWhHvuUfV

Corresponding Author
Miftahul Mushlih

Institutions
1) Faculty of Health Science, Universitas Muhammadiyah Sidoarjo,
Jl. Mojopahit No. 666, Sidoarjo, Jawa Timur.
2) Indonesian Genetic and Biodiversity Community, Jl. Ikan Mujair No. 15, Tunjung Sekar, Lowok Waru, Malang.
3) Faculty of Science and Technology, Universitas Muhammadiyah Sidoarjo,
Jl. Mojopahit No. 666, Sidoarjo, Jawa Timur.
4) Department of Biology faculty of Mathematic and Natural Science, Universitas Negeri Surabaya, East Java Indonesia.

Abstract
Type 2 Diabetes Mellitus (T2DM) is disorder caused by the loss of cell- β insulin secretion or insulin resistance. T2DM occurs by genetic and environmental factor. This study was conducted by analyze the inheritance of polymorphism in T2DM families. The method was used is RAPD-PCR (Random Amplified Polymorphic DNA) using F4 5--GTCTTGGGCA3- primer. Three families whose had a history of type 2 diabetes mellitus used. They are composed by 4 samples as positive control (diagnosed with diabetes mellitus), and 9 samples allele analyzed. 2 sampel from other sources was used as negative control. For the results, there were 7 of 9 samples might positive allele of T2DM.

Keywords
Type-2 Diabetes Mellitus, Polymorphism, RAPD-PCR, Pedigree

Topic
Biomedical Science

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

Corresponding Author
Alfrits Roul Sinadia

Institutions
(a) Universitas Klabat Airmadidi Manado, Airmadidi 95371, Indonesia
*alfritssinadia[at]unklab.ac.id
(2) Universitas Muhammadiyah Surakarta,
Surakarta 57162, Indonesia
sj795[at]ums.ac.id

Abstract
This study aimed to develop an academic achievement test to measure undergraduate students- achievement. It was a developmental study which used quantitative descriptive approach and analysis to analyze the quality of the test. The test that consisted of 48 items were tried out on 54 undergraduate students. Next, the items were analyzed in terms of validity, item difficulty indexes, discrimination indexes, distracter effectiveness, and reliability. The validity analysis showed that all items (48 items) at least had the Aiken-s V value of 0.92. Then based on the difficulty index analysis, it was found that 62.50% were moderate, 25.00% were easy, and 12.50 items were difficult. Another analysis showed that the discrimination power of 66.67% items were very good, 14.58% were good, 6.25% were good enough, and 12.50% were poor. In terms of distracter effectiveness of 19 multiple choice items which passed the screening process of item difficulty and discrimination, it was found that 31.57% of items had all well-functioning distracters. However, 42.11% items had three nonfunctioning distracters and the rest 26.32% had two nonfunctioning distracters. Finally, the reliability estimation analysis showed that the consistency index was 0.71.

Keywords
academic achievement test; item difficulty; item discrimination; distracter effectiveness

Topic
Learning / Teaching Methodologies and Assessment

Link: https://ifory.id/abstract/yV2eZgpxbWfr

Corresponding Author
Rina Fiji Lestari

Institutions
Universitas Negeri Malang

Abstract
The purpose of this study is to compare Cd level in sediments and Corbula faba Hinds on distance from the mouth estuary to the sea and to correlate between Cd level in sediment and C. faba Hinds. The technique sampling was Purposive Sampling by measuring the salinity of water in the estuary which indicated that C. faba Hinds could live in the area and sampling was determined at 5 plots with 3 replications. Data analysis used the One Way Anova and Pearson Corelation tests. The results are Cd levels in sediments at the meeting point of river water with low tide seawater have the highest average of 2.16 mg/kg which is significantly different from Cd levels in sediments upstream as far as 490 m and downstream as far as 160 m . The Cd content in C. faba Hinds at the first coordinate point (7°3341.82 "S & 112°5253.11" E) to (7°3411.62 "S & 112°5314.87" E) is not different. The correlation of Cd metal levels in sediments with Cd metal in C. faba Hinds was no relationship and the mean Cd levels in C. Faba Hinds have 2.05 mg/kg exceeding the threshold for consumption feasibility based on BPOM 2017.

Keywords
cadmium, Corbula faba Hinds and Sediment

Topic
Environmental Engineering

Link: https://ifory.id/abstract/XQgC8Z3Tn6wN

Corresponding Author
Dwi Nurul Hidayah

Institutions
Universitas Pendidikan Indonesia

Abstract
STEM learning is a strategy to improve the quality of graduates to be ready to provide solutions to problems in society. But based on a preliminary study, STEM learning is still done in one semester. The teacher does not yet have teaching materials to teach STEM. The STEM worksheets are downloaded from the internet and the themes taken are not in accordance with STEMs core core in design design to product manufacture. Thus, teaching materials were developed using the method of developing Four-step teaching materials (4S TMD). After being tested at one of the schools in Bandung, teaching materials were able to provide meaningful STEM learning experiences and provide student responses in designing earthquake-resistant buildings and seismographs according to the objectives of STEM learning by Bybee (2013). The characteristics of the book refers to the percentage level of difficulty of the book based on the opinions of students is 96% easy, and based on the writing of the main ideas of students is 91% easy. Feasibility of books with very decent categories.

Keywords
STEM-book, engineering design

Topic
Global Issues in Education and Research

Link: https://ifory.id/abstract/yk7VKLHaUYQd

Corresponding Author
ALLVANIALISTA IKALOR

Institutions
Universitas Negeri Malang

Abstract
Domestic waste produced by hospitals can reach 85% of total waste with high pollutant content. The high content of these pollutants can have an impact on human health as well as the environment. This study aims to detect the presence of the α-Amylase enzyme by gene code toward Enterobacter agglomerans. E. agglomerans is a bacterium that lives in waste and is able to degrade starch by hydrolyzing α-1.4 glucosidic amylose, amylopectin, and glycogen bonds. The study was conducted in December 2018 to March 2019 in the Microbiology Laboratory of Universitas Negeri Malang for the preparation of E. agglomerans and in the Microbiology Laboratory of Universitas Brawijaya to isolate DNA and detect the α-Amylase gene. The results showed that bacterial DNA isolation was of good quality with a purity value of 1.87 nm and a DNA concentration of 204.02 μg / ml. The α-Amylase gene in E. agglomerans was detected at 46oC, 48oC and 50oC. These results indicate that E. agglomerans has a gene that encodes the α-Amylase enzyme so that it can be used as a bioremediator candidate.

Keywords
α-Amilase, Enterobacter agglomerans, gen detection, bioremediator

Topic
Biotechnology

Link: https://ifory.id/abstract/rXznDBQ89vcb

Corresponding Author
Nihta Vera Frelly Liando

Institutions
Universitas Negeri Manado

Abstract
Todays generation is very close to technology and intensively spending more time with gadgets. Gadgets never get out of their hands. This fact has serious impact on the lack of interest in learning by means of conventional methods. For final year students, tutoring seems to have become mandatory before taking part in the National Examination. Apparently the learning system in tutorial meets the needs of students. This paper aims at reviewing the application of online tutorial system Ruangguru using descriptive method. It found out that in the disruption era of our times, Ruangguru presents itself as one of the responses to the needs of the current generation. Online tutoring with methods that have been adapted to technological advances and market needs is one form of reconceptualization of education in the era of disruption. It is expected that online tutoring does not depart from the values or substance of formal education which has components called learning concepts that support the successful implementation of education.

Keywords
disruption era, Ruangguru, education.

Topic
Other Areas of Education

Link: https://ifory.id/abstract/AkeFG6WuxQTC

Corresponding Author
Rulyana Salma Rosadha

Institutions
Department of Biology, Faculty of Mathematics and Sciences, Universitas Negeri Malang, Indonesia

Corresponding author: mohamad.amin.fmipa[at]um.ac.id

Abstract
Nephrolithiasis is the most common kidney disease in Indonesia. One of the natural treatments for nephrolithiasis that is by using Sonchus arvensis plant. The purpose of this study was to determine the potential of Sonchus arvensis natural compounds in the nephrolithiasis treatment using reverse docking analysis. The reverse docking method is used to prove the potential of a compound through several databases and softwares. The results of reverse docking showed interaction of predictive compounds with target proteins, binding affinity, and predictive compounds- binding sites with target proteins. The predicted compounds results of reverse docking were tested for toxicity using Toxtree v2.6.13 software and bio oral potential with the Rule of Five Lipinski. The results showed that one of predicted compounds named Apigenin 7 glucoside has potential as an anti-nephrolithiasis-s candidate.

Keywords
apigenin 7 glucoside, nephrolithiasis, reverse docking, Sonchus arvensis

Topic
Bioinformatics

Link: https://ifory.id/abstract/Q8gtAVGrEUDj

Corresponding Author
Bouchra Eddraoui

Institutions
Universitas Pendidikan Indonesia

Abstract
The English language has become the most spoken language around the world. It is the language of science, literature, and business. English is a global language that everyone should be able to understand and speak to guarantee a better future. However, a number of students feel anxious about speaking English as a foreign language, which deprives them from communicating their needs, expressing their ideas, and opinions. To date, many pieces of research on foreign language anxiety have been conducted, specifically in speaking skills, and have revealed numbers of causes and factors that lead to anxiety. The aim of this paper is to explore the speaking difficulties encountered by Moroccan and Indonesian high school students, as well as shed light on the level of anxiety they are experiencing and its causes. This study employs mixed-method: A Likert scale-based questionnaire was administered to 30 Moroccan high school students, and 30 others to their fellow Indonesian students, in addition, an in-depth interview to 3 Indonesian and 3 Moroccan students was conducted to explore the sources of their speaking anxiety. The quantitative and qualitative data have demonstrated that Indonesian students experience a high level of anxiety compared to their fellow Moroccan students. Pronunciation, fear of making mistakes and negative evaluation are the most major causes of EFL speaking anxiety experienced by Indonesian and Moroccan high school students.

Keywords
Foreign language anxiety, speaking anxiety, Indonesian students, Moroccan students

Topic
Other Areas of Education

Link: https://ifory.id/abstract/GwxknhPcZy7e

Corresponding Author
Fauziatul Fajaroh

Institutions
Universitas Negeri Malang

Abstract
One of the nanoparticles used in the medical world is ZnO nanoparticles. The purpose of this study is to synthesize ZnO nanoparticles using bananas peel extract as a capping agent. This research was conducted in four steps: extraction of three kind of bananas peel (red kapok, ambon, and tanduk), phytochemical test on the bananas peel extract, synthesis of ZnO nanoparticles using the extracts, characterization of ZnO nanoparticles by X-Ray Diffraction (XRD), and the test of the antibacterial activity of ZnO nanoparticles. Based on the phytochemical test it was proven that bananas peel extract contained secondary metabolite such as flavonoids, polyphenols, alkaloids, and saponins in various concentration. From the XRD it can be concluded that ZnO nanoparticles were successfully synthesized. Through the agar diffusion test, it can be showed that ZnO nanoparticles are a promising materials as antibacterial agents. This statement is based on evidence that the diameter of the clear zone produced ranges from 8 to 10 mm.

Keywords
banana peel extract, nanoparticles, ZnO, antibacterial agent

Topic
Bionanotechnology

Link: https://ifory.id/abstract/6ufwaBDrVT7N

Corresponding Author
Sueb Sueb

Institutions
Universitas Negeri Malang

Abstract
Abstract. Diverse human activity causes environmental degradation and decreases in ecosystem stability. The large number of human activities related to environmental problems causes government officials to work hard to provide environmental policies that can help prevent and overcome environmental problems. Jodipan and Arema tourist villages are the impact of the desire of the Malang city government to develop tourism areas that are environmentally sound. The purpose of this study was to determine the environmental awareness of the community in Jodipan and Arema tourist villages as tourist villages and compare them. The method used is expost facto and the analysis used the Mann Whitney Test because the data were not normally distributed. The results indicated that the value of p (0,002)> 0,05 meant that the environmental awareness of the people in the colorful villages of Jodipan and Kampung Biru Arema was significantly different.

Keywords
environmental awareness, tourism area, Malang

Topic
Environmental Engineering

Link: https://ifory.id/abstract/CAxLYhKEX6uc

Corresponding Author
Sasmitasari Sasmitasari

Institutions
Malang State University

Abstract
This study aims to determine the detection of the Aero gene in the bacterium Aeromonas hydrophilla as a candidate for bioremediator in dealing with hospital wastewater. This type of research is qualitative descriptive. The sample of this study is the bacterium Aeromonas hydrophilla which has the ability to hydrolyze proteins which are candidates for bioremediator agents. Samples were obtained from the Microbiology Laboratory, State University of Malang. Research Detection of the Aero gene in the Aeromonas hydrophilla bacteria was carried out in three places, namely the Microbiology Laboratory of Universitas Brawijaya for the DNA isolation stage, LSIH UB for the PCR stage and the Molecular Laboratory of Maulana Malik Ibrahim for Electrophoresis. The samples were analyzed using Zymo Research Quick-DNATM Bacterial Miniprep Kit for DNA isolation, Specific Primer for the Aero gene namely Aero 1a (forward) and Primary Aero 1b (Reverse) for PCR and Hyperleader VI for markers in analyzing PCR results in the electrophoresis process. The results showed that the Aero gene was detected at 48oC with a DNA concentration of 2.55 µg / ml, DNA purity of 1.53 µg / ml and the length of migration of 500bp DNA bands.

Keywords
Detection of the Aero gene, Aeromonas hydrophilla, Candidate for Bioremediator, Hospital Liquid Waste

Topic
Biotechnology

Link: https://ifory.id/abstract/qMNcZf9YpkKD

Corresponding Author
Muhammad Badrut Tamam

Institutions
a) Division Genetic and Molecular Biology, Generasi Biologi Indonesia (Genbinesia) Foundation, Gresik, Indonesia

b) Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University

c) Department of Biology, Faculty of Natural Sciences and Technology, Universitas Muhammadiyah Lamongan

d) Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang

*Corresponding author: violdhea[at]gmail.com

Abstract
Abstract. This research aims to reveal the potency of bioactive compound contained in Iponema batatas leaf as inhibitory agent to protease dengue virus through computational study. The target protein in this study is NS2B/NS3 serine protease. Furthermore, the 3D structure was obtained from PDB. In the same way, the 2D structure of several bioactive compounds of Iponema batatas leaf were collected from PubChem. The visualization and data analysis were performed by using the pymol software. Iponema batatas bioactive compounds have potency as inhibitor NS2/NS3 serine protease. According to the in silico analysis, dehydroabietinol have lowest free energy binding, but refer to the result of analysis of protein-ligand domain interaction of the all compounds showing that the protein-ligands have two type of chemical interaction namely hydrogen bond and hydrophobic. All of the compounds have hydrogen bond cannot be interacted with catalytic domain, but hydrophobic interaction can be interacted to target domain, via Ser135 by δ-Selinene and His51 by α-Caryophyllene. Finally, we conclude that δ-Selinene and α-Caryophyllene might have potencies as therapeutical drug for dengue.

Keywords
α-Caryophyllene, δ-Selinene, Ipomea batatas, NS2/NS3 serine protease.

Topic
Bioinformatics

Link: https://ifory.id/abstract/2CvYyug6H9dN

Corresponding Author
Tri Retnaningsih Soeprobowati

Institutions
1) School of Postgraduate Studies, Diponegoro University Semarang, Indonesia
2) Department Biology, Faculty of Science and Mathematics, Diponegoro University Semarang, Indonesia

Abstract
Human activities had induced environmental changes, which in turn change the biodiversity. Biodiversity is the variability among living organisms at genetic, species, and ecosystem levels. In this paper will have a look in the different ways, how biodiversity able to use for environmental impact assessment (EIA). EIA is process of evaluating the likely environmental impacts of a proposed project or development, taking into account inter-related socio-economic, cultural and human-health impacts, both beneficial and adverse. Water quality assessment will discuss in relation to the biodiversity changes. Organism live in the range of natural variability. In the species level, tolerant species will adapt to the environmental changes, whereas sensitive species will move to or eliminated from the ecosystem. In the level of population, environmental changes will induce changes in the assemblage of organisms. The species richness and abundance of plankton, diatoms, and vascular plants in the riparian vegetation were evaluated in relation to the effect of land use and water quality. The surrounding land uses and human activities along the aquatic ecosystem were found to have significant impact on the overall water quality and biodiversity of the aquatic biota and riparian vegetation.

Keywords
versity, environmental assessment, species, ecosystem, water quality

Topic
Bioconservation

Link: https://ifory.id/abstract/9tDu2Zk3TGfv

Corresponding Author
Alif Rosyidah El Baroroh

Institutions
1Jurusan Biologi FMIPA Universitas Negeri Malang Jalan Semarang 5, Malang 65145, Jawa Timur

Abstract
Hypercholesterol is caused due to consumption of carobohydrate and high fat so causing oxidative stress results in the formation of Glycation End-Products (AGE). This study aimed to determine the effect of giving single garlic extract on the levels of Advanced glycation end products (AGE) and Receptor of Advanced glycation end products (RAGE) in the epididymis of mice (Mus musculus) Balb / C strain of a high fat and carbohydrate diet models. The mice were acclimatized for a week and then were given HFD for 6 weeks. This research is an experimental study using Randomized Block Design (RBD) with 6 treatments and 4 repetitions. This study requires a total of 24 mice. The treatment group was divided into 6 groups, namely the normal group (N), the negative control group (K-), the positive control group (K +), and the treatment group by administering a single garlic extract with various doses (125 mg / Kg BB, 250 mg / Kg BB, and 500 mg / Kg BB). Measurement of AGE levels in the epididymis of mice on high-fat and carbohydrate diet models was carried out by the ELISA method after 45 days of treatment. The measurement results of AGE in the epididmis have a significant effect on the decrease in AGE in the epididymis according to the ANOVA test conducted (0.003), the results of a single ANOVA analysis of significant RAGE levels <0.05 (0.0). Giving a single garlic extract (Allium sativum L.) had a significant effect. Positive control group (K +) and single garlic extract dose 250 mg / Kg BB (P2) were optimal treatments for reducing RAGE levels in the epididymis of mice (Mus musculus) Balb / C strains on high-carbohydrate and fat diets

Keywords
Single Garlic, AGE, RAGE, Epididymis

Topic
Biomedical Science

Link: https://ifory.id/abstract/LhYtAmcHqb6f

Corresponding Author
Tri Retnaningsih Soeprobowati

Institutions
1) Ph.D Program of Environmental Studies, School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia
2) Department of Biology, Faculty of Mathematics and Natural Sciences, State University of Semarang, Indonesia
3) Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, Indonesia
4) Department of Biology, Faculty of Sciences and Mathematics, Diponegoro University, Semarang, Indonesia
5) School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia

Abstract
Abrasion that had occurred since 20 years ago in Bedono Village, Demak, Central Java due to land conversion from mangrove ecosystem to shrimp ponds. Mangrove ecosystem have an important role in coastal area. This study proposed to analyze mangrove conservation executed by the society and its significance on community life of Bedono Village, Demak, Central Java. Data involves some activities, planting area, and the number of mangrove species planted revealed from secondary data, society response by in-depth interviews and supporting data by observation. Based on the analysis, it is known that mangrove planting area during 2004-2015 reached 382.4 Ha with 922,570 mangrove trees planted. Need more than 10 years to achieve the program, by empowering and the active role of the community. Furthermore, mangrove conservation provides both direct and indirect favor for society.

Keywords
abrasion, mangrove conservation, community life, Bedono, Demak

Topic
Bioconservation

Link: https://ifory.id/abstract/heBNaTJxzfc4

Corresponding Author
Tri Retnaningsih Soeprobowati

Institutions
1) Master Program of Biology, Faculty of Sciences and Mathematics, Diponegoro University, Semarang, Indonesia
2) Department of Biology, Faculty of Sciences and Mathematics, Diponegoro University, Semarang, Indonesia
3) School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia

Abstract
A high increase of population growth along side of Gajah Wong River Yogyakarta had induce water quality degradation. Domestic, agriculture and home industries of leather waste reduce the water quality. The aim of the study is to analyze water quality and pollution index of Gajah Wong river. Secondary data of its water quality had collected to compare with the recent data. Water samples were collected from 8 sites of Gajah Wong River. The parameters that analyzed were COD, BOD, DO, TSS, Cd, and Pb. Water pollution index of STORET was calculated. Based on the data since 2006 indicated that the water quality in Gajah Wong River were exceeded the water quality standard as state in Government Regulation Number 82 of 2001 concerning Water Quality Management and Water Pollution Control, particularly for class I (source for drinking water), and class II (for agriculture and fisheries). Appropriate management have to developed to improve the water quality.

Keywords
water quality, Gajah Wong River, STORET, pollution index

Topic
Bioconservation

Link: https://ifory.id/abstract/3VKxLtPeAyNc

Corresponding Author
Fathahillah Fathahillah

Institutions
(a) Dept. of Electrical Engineering, Universitas Negeri Makassar, Makassar, Indonesia
*) fathahillah[at]unm.ac.id
(b) Dept. of Renewable Energy Engineering, Politeknik Negeri Jember, Jember, Indonesia
(c) Dept. of Electrical Engineering, Politeknik Negeri Malang, Malang, Indonesia
(d) Dept. of Electronics Engineering, Politeknik Negeri Bandung, Bandung, Indonesia
(e) Electricity System Control , Jeonbuk Human Resources Development Institute, Gunsan, Republic of Korea

Abstract
Automation is widely used in various industries to increase the speed, accuracy, and effectiveness of production and reduce the risk of hazards. Generally, the manufacturing industry has a product packaging and sorting process based on size, weight, shape, height and color. At present, the sorting process carried out manually that produces human errors, so it is necessary to develop accurate low-cost automation. Industrial automation requires an automation system having low costs, low maintenance and user-friendly. Programmable Logic Controller (PLC) is one of the most widely used automation equipment in the industry and can be programmed to control the operation of a machine. Advantages of PLC are favored this trend, instead of using custom-made controller systems, quality parts at a reasonable cost, specialized maintenance support. In this paper, PLC has been developed to control multi machine operation with product sorting and packaging based on product color. The multi machine operation consists of three DC motors used for conveyors, two single solenoids, proximity sensors, inductive sensors and limit switches. PLC uses Melsec Mitsubishi with ladder diagram programming using GX work2. The proximity sensor is used to detect the product color. The system is equipped with emergency button and alarm systems to facilitate the implementation of troubleshooting. To facilitate communication with operators and user-friendly systems, human machine interfaces (HMI) are used as interfaces for the system monitoring and controlling. HMI uses Pro-face from Schneider programmed using GP-Pro EX4.0. The ladder diagram has been implemented in PLC and tested on hardware to simulate the system. Based on the test results, Melsec PLC can communicate with HMI and control multi operation machine with product sorting and packaging. The machine can separate and package the metal product based on the color. By using Pro-face Human Machine Interface (HMI), the packaging system can be remotely monitored and controlled automatically.

Keywords
PLC, HMI, Automation, Multi operation machine

Topic
Industrial and Manufacturing Engineering

Link: https://ifory.id/abstract/U36gevwzb8Lp

Corresponding Author
Hesty Eka Mayasari

Institutions
Center for Research and Standardization of Surabaya

Abstract
Chloroprene rubber (CR) is synthetic rubber widely used for seal, joint, and also adhesive. For making rubber good, additives are needed and it can influence the properties of vulcanizate. Phenolic resin is used as additives in this study. This study aims to determine the curing characteristics and mechanical properties of chloroprene vulcanizate. The chloroprene vulcanizates were made by two-roll mill by adding phenolic resin. The phenolic resins were varies i.e: 0, 10, 20, and 30 phr. The curing characteristics of the CR vulcanizates were studied by rheometer at 140 ºC, 150 ºC, and 160 ºC. The phenolic resin improves the mooney viscosity, scorch time and optimum curing time. The compound without phenolic resin gives the highest mooney viscosity and optimum curing time. The 10 phr phenolic resin give the best mooney viscosity, optimum curing time, constant rate, activation energy and also tear strength. The suitable curing temperature for CR compound is at 150 ºC and the 10 phr phenolic resin is the proper additive for CR vulcanizate

Keywords
Phenolic resin, tackifier, chloroprene, adhesive

Topic
Chemical Engineering

Link: https://ifory.id/abstract/a2nJLBbA8xHW

Corresponding Author
LELY LUBNA ALAYDRUS

Institutions
a. Master Candidate, Postgraduate Studies, Universitas Mercu Buana, Jakarta, Indonesia. *55117110188[at]student.mercubuana.ac.id (lubna.al.idrus[at]gmail.com)
b. Associate Professor, Postgraduate Studies, Universitas Mercu Buana, Jakarta, Indonesia.

Abstract
Computer misuse leads to the computer-related injuries. The incidence of computer-related injuries (CRIs) is reported having high incidence among office personnel who works routinely with computer. The purpose of this research is to figure out the incidence of computer-related injuries in an organization with majority of employees using technology such as computer. This research is a survey of 120 office personnel selected with simple random sampling method. The data was collected by distributing a validated self-administered questionnaire. The results showed that the office personnel experienced computer-related injuries such as computer vision syndrome e.g. eye strain, blurred vision, watery eyes, headache and musculoskeletal disorders such as neck, shoulder and waist pain. Ergonomic training is suggested to be conducted at the organization to reduce the incidence of CRIs. .

Keywords
computer vision syndrome; musculoskeletal disorders; computer-related injuries; office personnel

Topic
Management, Enterpreneurship, and Leadership

Link: https://ifory.id/abstract/3dMRcjunqEvC

Corresponding Author
Dagmara Lewicka

Institutions
AGH University of Science and Technology
Lodz Technical University

Abstract
Relational view perspective explains and gives theoretical foundations to understand why organizations create and develop relationships and networks. The relational management context leads to research on the essence of the relational strategy of enterprises and the strategic choices made within it. It is indicated that the key choices around which the content of the relational strategy is played includes: the goal, the partner, the inter-organizational dynamics and the way of creating relations. An important research problem is the identification of antecedents of strategic choices of enterprises. The attention of researchers in this context focuses on inter-organizational trust as one of the most important factors. Inter-organizational trust assumes that cooperating enterprises rely on themselves in the belief that each party will fulfill its obligations in a competent, honest and rational manner, generating mutual benefits. In addition, the partner will not behave opportunistically, but will fulfill the contract and take actions that the trusting party expects.Therefore, the purpose of the paper is to recognize the relationship between level of trust and its dimensions on strategic choices made within the enterprises relational strategy. The research was carried out on a representative sample of 400 enterprises operating in Poland and on international markets, which is representative of the company-s size. The research results confirmed the important role of inter-organizational trust as an antecedent of strategic choices. It plays an important role in the process of selecting partners for relationships and influences the way relationships are created.

Keywords
inter-organisational trust, relational view perspective, strategic choices

Topic
Management Strategic

Link: https://ifory.id/abstract/xREkg92rZNCf

Corresponding Author
Ahmad Fauzi

Institutions
a) Department of Physics, Faculty of Natural Sciences and Mathematics, Institut Teknologi Bandung
Jalan Ganesa 10, Bandung 40132, Indonesia
b) Research Center for Biosciences and Biotechnology, InstitutTeknologi Bandung
Jalan Ganesa 10, Bandung 40132, Indonesia

Abstract
In this paper, we report on the synthesis of styrofoam/cellulose acetate composite nanofibers using electrospinning. Styrofoam was dissolved in DMF (dimethylformamide) with a concentration of 25 wt% and cellulose acetate at a concentration of 5 wt% with DMF solvent as well. Both solutions were blended and stirred until homogeneous. The precursor solution was varied by the mass ratio of styrofoam solution and cellulose acetate solution 80:20, 60:40, 50:50, 40:60, and 20:80. The solution characteristics were the viscosity, surface tension, and conductivity measured for each precursor solution. All solutions have been spun on the same parameters. The nanofibers morphology was characterized by a scanning electron microscope (SEM). The produced nanofibers have a straight, smooth, without bead morphology, and have a diameter of 500 nm to 2.5 µm. Each variation of the spinning solution produces a different diameter of the nanofiber. Addition of the content of styrofoam solution has produced a larger nanofiber diameter. The increase in fiber diameter was related to the characteristics of the viscosity solution, surface tension, and conductivity. Mixing cellulose acetate and styrofoam is expected to reduce the hydrophobicity of styrofoam. So that styrofoam nanofibers can have wider applications.

Keywords
Styrofoam; Cellulose Acetate; Nanofiber; Electrospinning

Topic
Synthesis and Characterization Techniques

Link: https://ifory.id/abstract/GBz3FVk8j2nN

Corresponding Author
Peni Mujinastiti

Institutions
(a) Fakultas Kedokteran, Program Studi Magister Manajemen Rumah Sakit, Universitas Brawijaya Malang
Jl. Veteran Malang-65145, Jawa Timur - Indonesia
*penimujinastiti[at]yahoo.co.id
(b) Fakultas Ilmu Budaya, Universitas Brawijaya Malang
Jl. Veteran malang-65145, Jawa Timur - Indonesia

Abstract
Increasing complaints makes X hospital management appoint officers to handle complaints that occur at the hospital. Human resources determine the activities of a company, and management must pay attention to human resources development. The purpose of the study was to reveal the meaning of the experience of complaints handling officers at hospital X. A phenomenological qualitative research design was conducted, and 4 participants was selected using purposive sampling. In-depth interviews toke place in February-April 2019. Data analysis using Interpretive Phenomenological Analysis (IPA). The results obtained are feelings of gratitude and sincerity in being a complaint handling officer, despite minimal experience. He felt this task was part of the destiny God gave him. The moral responsibility makes complaints handling officers struggle to carry out their roles. Feelings of discomfort (sad and bored) during work are overcome by workplace spirituality, which encourages workers to carry out the task of handling complaints as part of worshiping God. The spirituality of the complaints handling officer will form a new mentality characterized by a more holistic orientation, providing service to humans, having a commitment to truth and other forms of noble behavior and self-awareness. Characteristics of this mentality are very necessary for companies to improve performance. Spiritual psychological experience of officers is so strong that it produces deep motivation and feelings. Spirituality in work makes employee perform their roles well, and make him officers feel job satisfaction at X hospitals. Companies that emphasize spirituality will change the behavior of workers and companies and increase work productivity.

Keywords
Influence; Performance; Spirituality

Topic
Human Resources Management

Link: https://ifory.id/abstract/JWKFpm8YdQLA

Corresponding Author
Peni Mujinastiti

Institutions
(a) Fakultas Kedokteran, Program Studi Magister Manajemen Rumah Sakit, Universitas Brawijaya Malang
Jl. Veteran Malang-65145, Jawa Timur - Indonesia
*penimujinastiti[at]yahoo.co.id
(b) Fakultas Ilmu Budaya, Universitas Brawijaya Malang
Jl. Veteran Malang-65145, Jawa Timur - Indonesia

Abstract
Patients who are less satisfied with hospital services will generally complain. Negative responses received by the hospital in the form of complaints to lawsuits, potentially causing a bad image in the community. The purpose of the study was to reveal the meaning of the experience of complaints handling officers in hospital X. The phenomenological qualitative research design with 4 participants selected using purposive sampling. In-depth interviews were conducted in February-April 2019. Analysis of data using Interpretive Phenomenological Analysis (IPA). The results obtained are the core themes of wanting to maintain and improve the image of the hospital. This is because the sense of belonging for hospital is high. The complaint handling officer wants to be a person who is useful and responsible for the task. The difficulty faced is the lack of knowledge and lack ability to communicate with clients. In carrying out their duties, officers get support from head of the hospital and also the cooperation of the hospital team. Openness of hospital staff are needed to facilitate patient complaints. Coordination with the head of the hospital is always done, if there are obstacles in handling complaints. It is expected that the synergy between service officers can improve the quality of service and there for increased customer satisfaction. Because with the satisfaction received by the customer or patient, will increase public trust in the hospital and maintain good image of the hospital.

Keywords
Complaints Handling Officer; Experience; Image

Topic
Marketing Management

Link: https://ifory.id/abstract/WL3VxQDvHebG

Corresponding Author
Sutawanir Darwis

Institutions
(a),b),(c)Department of Statistics, Bandung Islamic University
(d)Department of Mechanical Engineering, University of Diponegoro Semarang
(a)std.darwis[at]gmail.com, (b)nusarhajarisman[at]yahoo.com, (c)suliadi[at]gmail.com, (d)awidodo2010[at]gmail.com

Abstract
A life table gives probabilities based in failure per thousands in a given year and used to help determine premiums. The construction of life table is based on time to failure of the unit which is converted to a duration vector and used to calculate the estimate of life table using moment method. Bearings are one most present in turbine power generation. To assess turbine degradation, risk accident prognosis of bearings is needed. Predicting bearing degradation before reaching the state of risk of accident is one important issues in power generation insurance. This paper proposes a method based on support vector regression to achieve the goal. The results will be used to predict the remaining useful life of the bearings. The method is applied on PRONOSTIA dataset which is an experimental platform dedicated to test methods related to bearing health assessment. The results shows that the method can effectively model the evolution of the bearing degradation.

Keywords
bearing degradation, remaining useful life, support vector regression, power generation insurance, PRONOSTIA

Topic
Statistics

Link: https://ifory.id/abstract/Cv6g3aXpZ7fJ