Indonesia Conference Directory

Corresponding Author
Syaiful Rochman

Institutions
Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Bengkulu

Abstract
This research was conducted to improve the quality of learning in basic physics 1 course, namely to improve holistic thinking skills and improve student cognitive learning outcomes by applying integrated science. This research is a Classroom Action Research (CAR) which consists of three cycles. Each cycle consists of planning, observation, and reflection. The population of this research is the science education student of FKIP UNIB taking basic physics 1 in the odd semester of the 2019/2020 school year. The research instruments used were observation sheets and tests. Observation sheet data was assessed with a score of 1-3 (1 = insufficient, 2 = sufficient, and 3 = good). Test data is processed to look for average, absorption, and mastery learning. The success indicator can be seen from the activity score, which is if cycle III> cycle II> cycle I and good category. Learning outcomes are said to be increased if the average in cycle III> cycle II> cycle I. Absorption is said to increase if cycle III> cycle II> cycle I.

Keywords
Integrated Science, Holistic, Learning Outcomes

Topic
Science Education

Link: https://ifory.id/abstract/ugKVzGdEJj2p

Corresponding Author
SUGIARTI ATIQ

Institutions
a.b))* PHYSICS EDUCATION
UNIVERSITY of PGRI PALEMBANG
JL. Jenderal Ahmad Yani Lr. Gotong Royong Palembang
sugiartialatiq[at]gmail.com
dwi.dyalovai[at]gmail.com

Abstract
The purpose of this study is to describe the ability of students science process skills on electrical material after the implementation of discovery learning models. Discovery learning model is a learning model that guides students to make discoveries through experimental activities. This study uses a quasi-experimental method with one shot pretest post test design. The material used in this research instrument is electrical material presented of the second semester physics education program students at PGRI Palembang University.The results of this study indicate the science process skills in electrical material are included in the medium category with an average value of 61.46%. The science process skills in the observation aspect are the science process skills which have the highest percentage of 71.3% followed by the science process skills in the measurement and conclusion aspects of 66.2% and 65.9%. While the lowest skills are the science process skills in the classification and predicting aspects of 58.4% and 45.5%.

Keywords
science process skills, discovery

Topic
Physics Education

Link: https://ifory.id/abstract/R8Zn2yLX7E94

Corresponding Author
Intan Delia Sapitri

Institutions
Departement of Chemistry, Faculty of Mathematics and Natural Sciences, University of Bengkulu
Jl. W.R. Supratman, Kandang Limun 38317 A Bengkulu, Indonesia
*e-mail address : asdim[at]unib.ac.id, intandeliajg[at]gmail.com

Abstract
Tin (IV) dioxide (SnO2) is a semiconductor material with a band gap of around 3.6 eV. It is considerable technological importance with a number of applications, especially for photoelectrodes, detection of flammable toxic gases, thin film coatings, and gas sensors. This research aims to determine the effect of variations in glucose concentration as a capping agent to the crystallinity and morphology of SnO2. The synthesis of SnO2 nanoparticles has been investigated by using several methods such as hydrothermal, sol-gel and solvhotermal methods. Especially for hydrothermal method, several capping agents such as rarasaponin in Sapindus rarak, cetyl trimethylammonium bromide (CTAB), and ethylenediaminetetraacetid acid (EDTA) that can reduce the formation of aggregates. This synthesis was carried out by the hydrothermal method at 100 oC for 3 hours. SnO2 nanoparticles as synthesized was characterized by using X-Ray Difraction (XRD) and Scanning Electron Microscope (SEM). The crystallinity of SnO2 nanocrystal as shown in XRD pattern was influence by changing of glucose concentration. SEM images show that aggregate formation is influenced by variations of glucose concentration as a capping agent. These results show that aggregate growth in the formation of SnO2 nanoparticles could be controlled by optimized glucose concentration in reaction solution.

Keywords
Nanoparticles, SnO2, Capping agent, Glucose

Topic
Chemistry

Link: https://ifory.id/abstract/AMnZKwjRT9zG

Corresponding Author
meta berlian meta

Institutions
Institut Agama Islam Negeri Bengkulu (IAIN Bengkulu)

Abstract
Abstract: The purpose of this classroom action research was to improve students understanding of the mathematical concept of class VIII A through the RME (Realistics Mathemathics Education) model. The research used RME learning model and the instruments used were tests, observations and documentation. The number of samples was 25 students of class VIII A SMP N 22 Bengkulu City, samples were chosen randomly. The research was conducted at SMP N 22 Bengkulu City from January to February. This research design used the Kemmis and McTaggart models. The results were obtained by using quantitative and quantitative data analysis methods.This study found that the Realistic Mathemathics Education learning model could improve the understanding of students of class VIII A SMP Negeri 22 Bengkulu City to mathematical concepts.

Keywords
mathemathical concepts, Mathemathics Education Realististics

Topic
Mathematics Education

Link: https://ifory.id/abstract/g3WQVZGbEvTC

Corresponding Author
Nirwana Nirwana

Institutions
Universitas Bengkulu

Abstract
Thinking process is a complex process and cannot be seen directly how the brain works and information is processed. Information received through the senses will be perceived by the parts that function specifically. In another hands, information processing refers to how to collect/ receive stimuli from the environment, organize data, solve problems, find concepts, and use verbal and visual symbols. To Improve this process, management education in class should be implemented to improve the result of learning process. Education management can be defined a series of processes of activities managing how to teach students in term of process with planning, organizing, directing or controlling, and assessing activities. While learning management in the narrow sense is defined as activities that need to be managed by educators during interactions with students in the implementation of learning and processing information. In this research, we show how the ability to process information in term of education management in student of Magister Mathematics Education. Specifically, the study saw the result of instruments implementation in subject of Cognitive Psychology in class. The instrument shows there was 97.5% improvement in term of the ability to process information and the 89.35% of student shows the tendency to use the instrument to improve the learning process in classs.

Keywords
Management, Perspective, Process Information

Topic
Other Relevant Topic

Link: https://ifory.id/abstract/8VFwWvRtTjr3

Corresponding Author
Neza Agusdianita

Institutions
Postgraduate Mathematics Education, Universitas Bengkulu, Jl. W.R. Supratman, Bengkulu 38371 Indonesia

Abstract
Geometrys direct objects were abstract. It was a learning material that was difficult for elementary students. Therefore, learning was needed close to the minds and daily lives of students. One of them was "Tabot" Culture. That was the ethnomatematics approach. The purpose of this research was to explore elementary geometry concepts based on Tabot Culture. We apply an explorative-qualitative approach. The subjects of this study were the makers of the Tabot, elementary students, and elementary mathematics teachers. This was a needs analysis. Activities were carried out through direct observation, documentation, in-depth interviews and focus group discussions. The research instruments were anecdotal direct observation sheets, and interview guides. Data were analyzed qualitatively. The results of the study found that the culture of Tabot provides reinforcement of student character that was obeying the principle, thinking logically, critically, working hard, curiosity, independence, confidence. The geometrical concepts that exist in the Tabot culture were the cube, the beam, the pyramid, the prism, the sphere and its elements. Also, understanding of two-dimentional figure. We conclude that Bengkulu Tabot culture can be used as a starting-point for learning the achievement of geometrical concepts and strengthening student character.

Keywords
Ethnomatematics, Tabot, Geometry Concepts

Topic
Mathematics Education

Link: https://ifory.id/abstract/rpJbQ3AHqkve

Corresponding Author
Susila Bahri

Institutions
Andalas University

Abstract
In this study, the mathematical model for changing active sentence to passive sentence in Indonesian language is constructed. In the construction process, the ten types of words are expressed as vertices on directed graphs called sentence graphs. The edges of the graphs are weighted with positive integers in the order of words in the sentence. The graph is then expressed as an adjacency matrix. The matrices form vector spaces. Finally, a linear transformation is carried out to get a sentence graph.

Keywords
changes active sentences to passive, sentence graph, adjacency matrix, linear transformation

Topic
Mathematics

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

Corresponding Author
Nurwiyoto Nurwiyoto

Institutions
Bengkulu Muhammadiyah University (UMB), Education Doctoral Program Student UNIB

Abstract
This study aims to determine the type of rattan producer resin jernang, examines the growth habitat, jernang utilization, conservation efforts, and the process of inheritance jernang rattan knowledge to the next generation in Bukit Mangkekal, Village House Sako Village Kaur District, Bengkulu Province. Data collected by library research techniques, in-depth interviews, direct observation, and documentation. Jernang rattan made herbarium samples and identified in Bogoriensis LIPI Bogor Herbarium. The data were analyzed descriptively. The research found jernang quality rattan species namely Rattan Jernang Pulut (Daemonorops didymophyla). Habitat rattan jernang found growing in the valley and in the area around the overflow of river water, which is close to the trees to propagate. The ecological benefits of rattan jernang is subdued condition of the forest, the economic benefit is the price at the rate sap jernang local farmers between Rp. 500,000.00 - 1,000,000.00 USD per kilogram, medical benefits are as a cure wounds, toothache, medicine after childbirth, while the industrial benefits are as dye lacquerware, ceramics, tools of stone, wood, rattan, paper, paints, and pharmaceuticals. Resin jernang most sought after in the natural forest, and started there were cultivated in the community garden. Jernang fruit processed by extraction to obtain a resin, and sell them to buyers in the village. The conservation efforts are constrained by the ever-expanding land use change, jernang fruit pemanenen system unsustainable, lack of knowledge and jernang cultivation technology, and lack of public knowledge about the quality jernang. Inheritance rattan knowledge jernang done by parents to their children and the Chairman of the indigenous communities. The results of this study can be used as material in conservation education in the community and in the schools sustainability efforts jernang Rotan.

Keywords
Resin Rattan Jernang, Conservation Education, Ethnobotany Jernang

Topic
Biology Education

Link: https://ifory.id/abstract/f2pyK4bzA3hk

Corresponding Author
Yumiati Yumiati

Institutions
1. Universitas Terbuka, Indonesia
2. Universitas Bengkulu, Indonesia

Abstract
This study aims to improve the ability to understand monoid concepts through Problem Posing learning. The method used is a quasi-experiment. The research design used was pre-test post-test group design. The research sample was 32 undergraduate students of the Mathematics Education Study Program FKIP Universitas Bengkulu at the Algebra Abstract course of even semester 2018-2019 academic year. The instrument used were a 4 item test about the concept of monoid. Data were analyzed qualitatively and quantitatively. The results of the study are as follows: 1) an increase in the ability to understand the monoid concept of students by 0.67, including the medium category; 2) the achievement of the ability to understand the monoid concept is 74.75 in the high category. The results of this study have implications for the importance of the role of questions in learning mathematics.

Keywords
Monoid, Problem Posing

Topic
Mathematics Education

Link: https://ifory.id/abstract/pPjn62HVAadU

Corresponding Author
dian eka chandra wardhana

Institutions
Universitas Bengkulu, Indonesia

Abstract
Lecturers as facilitators play an important role in generating students- understanding about the learning materials. Good rethorical technique of the lecturers is believed to enhance students- understanding about the course materials. For this reason, the utilization of good rhetorical techniques is essential in delivering lectures. The purpose of this study is to investigate the effect of the rhetorical technique of Faculty of Mathematics and Natural Sciences lecturers at Bengkulu University on the critical thinking skills of students in the Geophysics Class. This research employs one sample free test or the One Sample t-test Method. The data of this research was collected by using a test which is a performance test and then analysed by using Kolmogorov-Smirnov test. The validity of the data is proven through data normality test. The results showed that the rhetorical technique used by the Mathematics and Natural Sciences lecturer had a significant positive effect on students critical thinking skills with p-value> 0.05. Key word : rethorical technique, critical thinking skills, the learning science materials

Keywords
rethorical technique, critical thinking skills, the learning science materials

Topic
Science Education

Link: https://ifory.id/abstract/ATQVYgBZHp3W

Corresponding Author
Hari Sumardi

Institutions
a) Graduate School of Mathematics Education, Bengkulu University, Bengkulu 38371, Indonesia
*harisumardi[at]unib.ac.id
b) Department of Mathematics, University of Sumatera Utara, Medan 20155, Indonesia

Abstract
A two-colored digraph (D^{(2)}) is called primitive if there exist nonnegative integers (h) and (k) such that for each ordered pair of vertices (v_a) and (v_b) there are ((h,k))-walk from (v_a) to (v_b) and (v_b) to (v_a). The competition index of a primitive two-colored digraph is the smallest positive integer (h+k) such that for each pair of vertices (v_a) and (v_b) there is a vertex (v_c) such that there are ((h,k))-walks from (v_a) to (v_c) and from (v_b) to (v_c). We study the generalized competition index of two-colored Wielandt digraphs.

Keywords
Two-colored digraph; Competition index; Generalized competition index

Topic
Mathematics

Link: https://ifory.id/abstract/xtfurVzK8HMP

Corresponding Author
Effie Efrida Muchlis

Institutions
Universitas Bengkulu

Abstract
The aim of this research was to describe the Multiple Intelligence optimize activity using discovery learning models that improve learning outcome in trigonometry class. The type of this research was classroom action research, with the steps were planning, implementing, observing and reflecting. The subject of this research was students of Mathematics Education who took trigonometry class in the first semester of the academic year 2017/2018. The instrument used was a test of Multiple Intelligence, observation sheet and learning outcome test. The results of the analysis of activity observation sheet with discovery learning and Multiple Intelligence tests obtained: 1). Linguistic intelligence was optimized with the discussions and respond to the problem, 2) Mathematical-logical and intrapersonal intelligence optimized through the activities of verification, 3) musical intelligence was optimized through listening to music in the application of the concepts activity, 4) Space-visually intelligence optimized through working on the problems in the application concept activity, 5) interpersonal intelligence was optimized through data collection activity occurred cooperation in solving the problems 6) Space-spatial intelligence could optimized directly by expressing the concept after making the observation and manipulation of props. The average of learning outcome increased in every cycles, the average of learning outcome in the 1st cycle was 69,92. The average of learning outcome in the 2st cycle increased to 78,45. The average of learning outcome in the 2st cycle increased to 85,48.

Keywords
Multiple Intelligence, discovery learning, activity, learning outcome

Topic
Mathematics Education

Link: https://ifory.id/abstract/TPcHxzAUQ7E8

Corresponding Author
Iin Tri Sasmita Sari

Institutions
Institut Agama Islam Negeri Bengkulu

Abstract
ABSTRACT This research is a quantitative study which aims to study computer-based multimedia teaching materials at SMP 06 Bengkulu City on mathematics learning outcomes. Sampling in this study using random sampling techniques with a sample of 20 class VII students. Data collection used in this research is questionnaire and test. Data in subsequent studies were analyzed using the T test, based on the results of the analysis obtained conclusions from computer-based multimedia teaching materials that have a positive influence on mathematics learning outcomes of SMP 06 Bengkulu City students.

Keywords
Teaching Materials, Multimedia, and Learning Outcomes.

Topic
Mathematics Education

Link: https://ifory.id/abstract/kzDYdVf6MqKu

Corresponding Author
Nur Ayu Anggraeni

Institutions
Institut Agama Islam Negeri Bengkulu

Abstract
This research is intended to answer the problem of how to inculcate the values ​​of character education in the VII grade Mathematics learning process at SMP Negeri 10 Bengkulu City, this is due to the prevalence of people who begin to commit dishonest deeds, such as drug use, adherence to moral degredation, therefore the need for the integration of the values ​​of character education in adolescents, especially in the process of learning mathematics. The problem was discussed in one field which was carried out at SMP 10 Bengkulu City. Research data obtained by free interview and observation. All data were analyzed with a phenomenological approach and descriptive analysis using induction logic, deduction, and reflection. The results showed that the values ​​of character education in grade VII mathematics material included religious character values, good personal character values, social care character values, honesty character values ​​and hard work character values ​​that could be embedded through the mathematics learning process. The way the teacher instills these character values ​​is by getting used to reading prayers before and after learning, giving direction so that students are enthusiastic about learning mathematics and giving examples of problems related to daily life.

Keywords
Character Education, Mathematics Learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/CnAyfKBeD6rp

Corresponding Author
luqman Hakim

Institutions
(a)Departement of Physics, Faculty of Mathematic and Natural Science, Palangka Raya University, Palangka Raya, Indonesia *luqman_h[at]mipa.upr.ac.id
(b)Departement of Biology, Faculty of Mathematic and Natural Science, Palangka Raya University, Palangka Raya, Indonesia
(c)Departement of Chemistry, Faculty of Mathematic and Natural Science, Palangka Raya University, Palangka Raya, Indonesia

Abstract
This study aims to utilize the use of ultrasonic waves that function as anti-bacterial coliforms in the Kahayan river water. Water sampling is done using the Grab Sampling technique using the Kemmerer Sampler tool. Water used as a sample is in environmental conditions. The application of ultrasonic waves is done by using frequency variations of 20 kHz, 30 kHz, 40 kHz, 50 kHz, and 60 kHz at 5 minutes to get the optimum frequency. Coliform test was carried out by the MPN method, with the stages of the estimation test, affirmation test, and colony calculation. MPN test results show that the use of ultrasonic as the optimum anti-bacterial at a frequency of 40 kHz. Efficiency in this treatment is 89.9%.

Keywords
Ultrasonic wave, anti-bacterial, Grab Sampling, Coliform

Topic
Physics

Link: https://ifory.id/abstract/nbeVpTRzFEt3

Corresponding Author
Yossi Wibisono

Institutions
Politeknik Negeri Jember

Abstract
Politeknik Negeri Jember (POLIJE) is the leading vocational institutions that promote applied research as a form of downstream to solved the problems of stakeholders (both industry and society). The indicator of the vocational college-performance is the number of innovations that have been implemented in the industry and society. One of the problems found in the SME community partners primarily in the food industry, especially in the tempeh processing industry. Making tempeh with local raw materials and traditional methods requires a lot of water and the product also decays quickly. POLIJE team, Wibisono; Santoso and Budiati initiated industrial tempeh in Al Islah Jenggawah Jember for using local soybean. Training and coaching activities is funded by the Indonesian Ministry of Research, Technology and Higher Education through PKM Programs (Community Partnership Program). In the event, POLIJE team giving equipment to the process of making modern tempeh, such as an incubator for the production of special ragi (yeast) equipped with gear sensor (sensor cable thermometer, TDS tester and others); soybean washing machine; soybeans peeler (for the development of turnover) as well as digital microwave for preparation of media for yeast. In the treatment process before the community service is to get local tempe with the highest levels of genistein. As for the treatment factor is the type of yeast which includes raprima (factory made) yeast with artificial yeast based on the Wibisono method. The duration of fermentation uses a time duration of 0; 6; 12; 18 and 24 hours. Each time fermentation has been determined, genistein (and genistin) is tested. The research results above indicate that optimal hydrolysis of genistin is carried out at 43 oC for 18 hours. PP Al Islah recognize that using washers soybeans, can save up to 30 minutes each 100 kg of material and no raw material is wasted, and it can save water usage so that will be able to reduce water tempeh industrial waste products. The results showed no difference in the value of TSS (Total Suspended Solid) between manual washing compared with modern equipment, Also results of research studies the content of genistein showed increased by 33% compared to conventional methods.

Keywords
Less water; Local soybean; New Method; Tempeh

Topic
Food Science and Technology

Link: https://ifory.id/abstract/H8Z4tU7fdFYg

Corresponding Author
ayu febriyatna

Institutions
Politeknik Negeri Jember

Abstract
High fat consumption causes various disease problems. One of the effects is changes in lipid profile and body weight. The purpose of this study was to determine the effect of High Fat Diet (HFD) on Body Weight and HDL cholesterol level in Male White Wistar Rats. Twelve male white rats strain wistar divided into 2 groups and replicated 6 rats. The control group was given standard diet and HFD groups was given HFD 18,69% of fat contain with source of fat were margarine, beef brain and coconut cream powder. Diet was carried out for 9 weeks. The parameters observed were body weight and HDL cholesterol level on rats. Statistical analyzed using independent T test. The results showed that HFD group have increased body weight significantly compared control groups (p <0.05). In addition, HDL cholesterol levels in HFD group have not significantly difference with control group (p>0.05) but have tended to decrease compared control groups. The conclusion on this study that HFD were able to increasing body weight and potential for decreasing HDL cholesterol level of experimental rat.

Keywords
HDL cholesterol, High Fat Diet

Topic
Others (Related to food and agriculture)

Link: https://ifory.id/abstract/yJQwtmr6HfZ8

Corresponding Author
Ratih Puspitorini Yekti Ambarkahi

Institutions
Politeknik Negeri Jember

Abstract
Climate change is one of the very serious threats to the agricultural sector. In climate change, season shifts occur, which are marked by the shorter rainy season but with large rainfall, causing cropping patterns to shift. Damage to crops occurs because of the high intensity of the rains impact on floods and landslides. Then, fluctuations in temperature and humidity that are increasing can stimulate the growth and development of plant-disturbing organisms. With this explanation climate change can be detrimental to farmers and the agricultural sector, shrinking and decreasing agricultural output which affects the decline in farmers incomes (Festiani, 2011). Climate change causes the cropping system and planting time in the agricultural sector in Indonesia to change. Unstable changes can cause large losses, especially in the agricultural sector. Then further research is needed to prove the impact of losses experienced due to climate change and other factors. The potential of adaptation actions must be determined for both agriculture and government. The purpose of this research; firstly analyzing the impact of climate change on the production of food and vegetable commodities in Jember Regency and secondly analyzing farmers perceptions of climate change. The targeted research output is the results of the research can be discussed at the 2nd International Conference on Food and Agriculture (ICoFA) of the State Polytechnic of Jember, and the Level of Technology Readiness (TKT) is 4.

Keywords
climate, food, vegetable, commodity, adaptation

Topic
Agroindustry and Agribusiness

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

Corresponding Author
Dhanang Eka Putra

Institutions
Politeknik Negeri Jember

Abstract
The Government through the Ministry of Agriculture in the 2015-2019 National Medium-Term Development Plan (RPJMN) has established rice, corn, soybeans, beef, sugar, fish, and salt production as the main food commodities, the target is to achieve food products sourced from domestic production. Especially for soybean commodity, currently, Indonesia has approximately 1.5 million tons every year. The purpose of this research; The first is to analyze the soybean marketing system through the marketing and institutional function approach, marketing channels, market structure, and market behavior in Jember Regency. Second, analyzing the efficiency of soybean marketing channels in Jember Regency on each marketing channel with a marketing margin approach, farmers share, and profit ratio. Third, determine the right strategy to be applied in efforts to develop soybean commodity in Jember Regency. The analytical method used in this research is qualitative and quantitative analysis to analyze the marketing system that has been running until now, to later find out the problem and its solution. Second is the development strategy analyzed by SWOT and continued with the QSPM (Quantitative Strategic Planning Matrix) method to determine alternative strategies for developing appropriate soybean commodities. The targeted research output is the results of the research can be discussed at the 2nd International Conference on Food and Agriculture (ICoFA) of the State Polytechnic of Jember, and the Level of Technology Readiness (TKT) is 4.

Keywords
marketing, system, soybean, SWOT, QSPM

Topic
Agroindustry and Agribusiness

Link: https://ifory.id/abstract/nap9cfNCx4YM

Corresponding Author
Ngatijo Rinto Wiyono

Institutions
1) Departement of Chemistry, Faculty of Science and Technology, University of Jambi, Jl. Jambi-Muara Bulian km 15, Mendalo, Jambi 36361, Indonesia
*tijo52[at]yahoo.co.id

Abstract
Synthesis Silica Modified Quaternary Ammines (SMQA) and its application has been carried out on the adsorption of gold(III) ions in a batch system. SMQA material is synthesized through the SMA methylation reaction. SMA material is synthesized from Na2SiO3 and 3-Aminopropyltrimethoxysilane (3-APTMS). Furthermore, the replacement of the methyl group in [-N(CH3)3]+ will change to [-N+CH3{(CH2)3N+(CH3)3}2] called Silica Modified Quaternary Triammines (SMQT). SMQT is synthesized by watching SMA with 3-APTMS become SMT which is then refluxed for methylation process to form SMQT. Material characterization is carried out through identification of functional groups, surface morphological analysis, elemental composition and metal ion concentration. Adsorption process of metal anion [AuCl4]- obtained optimum results at pH 5 with a contact time of 100 minutes with an adsorption capacity of 77.58 mg/g and an efficiency value of 96.975%.

Keywords
SMQA, SMQT, Adsorption, Gold(III)

Topic
Mining Engineering

Link: https://ifory.id/abstract/G29YkPLdhKgq

Corresponding Author
Novita Indah Pratiwi

Institutions
1) Physics Departement, Faculty of Science and Mathematics, Diponegoro University, Indonesia
2) Department of Engineering, Architectural Engineering, Diponegoro University, Indonesia
3) Departemen of Industrial Chemical Engineering Technology, Vocational School, Diponegoro University, Indonesia
4) Nursing science study program, Faculty of health Sciences, Muhammadiyah University, Purwokerto, Indonesia
5) Department of History, Faculty of Humanities, Diponegoro University, Indonesia

Abstract
Wastewater produced by batik industry in Cibelok Village, Pemalang that is disposed straight into the sewage will increase the concentration of Biochemical Oxygen Demand (BOD), ammonia (NH3), Chemical Oxygen Demand (COD), chromium (Cr), lead (Pb), watercolor, acidity (pH), and dissolved oxygen (DO). Disposed batik wastewater without treatment will contaminate the environment mainly its water and soil. The main purpose of this research is to reduce the concentration of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), ammonia (NH3), chromium (Cr), lead (Pb), watercolor, acidity, and dissolved oxygen (DO) by treating batik Cibelok-s waste and not contaminate the surrounding environment. Laboratory test results on batik waste in COD, BOD, DO, Ammonia, Chromium, Lead, watercolor, and acidity (pH). These results are not in accordance with 2014 Waste Water Quality Standard Number 5 by the Regulation of the Minister of Environment of the Republic of Indonesia. Alternatives that have been done to treat Cibelok Village-s batik waste is to lower dangerous substances concentration through electrocoagulation and filtration. The processes could lower COD level around 57.6%, ammonia 98%, chromium 85%, and BOD 67%. Reducing the concentration of the substance makes the batik waste safer and environmentally friendly when it-s finally disposed to the sewage.

Keywords
Batik waste, Electrocoagulation, Environment, Filtration

Topic
Environmental Technology

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

Corresponding Author
Iwan Suryadi

Institutions
Universitas Sebelas Maret

Abstract
Abstract. Many factors affect the impaired lung function capacity. This study aims to look at the determinants of lung function capacity. The study was conducted at Tirtonadi Terminal. This study uses an observational design with a cross-sectional design. The population of workers was 54 people after the inclusion and exclusion criteria from the total population. a sample of 50 workers was taken using a random sampling technique. dust measurement based on SNI 16-7058-2004 uses a low volume sampler and is carried out at 06.00-10.00, 14.00-16.00. the measurement point is carried out at the west and east gates as the highest concentration of pollutants Measurement of lung function capacity using spirometry. Other variables were assessed using a questionnaire and a checklist sheet to determine the characteristics of the study respondents. The results showed significant levels of environmental dust, work area and use of significant masks with impaired lung function capacity with p-values = 0.003, 0.005 and 0.001. The use of masks during work must be a must for workers to protect from dust exposure which generally comes from motorized vehicles. Keywords: Environmental Dust Exposure, Lung Function Capacity

Keywords
15061990

Topic
Environment, Health, and Safety

Link: https://ifory.id/abstract/vTY7WRX24yAL

Corresponding Author
Alfonds Andrew Maramis

Institutions
1 Department of Biology, Faculty of Mathematics and Natural Sciences, State University of Manado (UNIMA), 95618 Minahasa, Indonesia
2 Department of Technology and Vocational Education, Faculty of Engineering, State University of Manado (UNIMA), 95445 Tomohon, Indonesia

Abstract
Dimembe Village which is the capital of Dimembe Subdistrict, North Minahasa Regency has been famous for a long time as a center for export quality papaya production. However, since the beginning of 2016 the price of papaya has dropped making farmers choose not to pick papaya fruit in the garden because the cost of picking and loading is not comparable to the selling price. Priority problems experienced by most farmer groups in this village are: nursery, planting, and maintenance technology are still conventional, the limitations of modern farming tools for land management, limited knowledge and skills related to fertilizing and controlling plant pests, and many other problems. To answer these problems, the community service program, Program Pemberdayaan Masyarakat Unggulan Perguruan Tinggi (PPMUPT) scheme has been carried out in 2019 (the first year, from a 3 year plan). The method of conducting the activities includes: technology dissemination, training, application, and mentoring for papaya cultivation. The application of science and technology in this program includes: land management, seed and plant preparation, fertilizing, maintaining, controlling plant pests, and harvesting. The results of the implementation show that PPMUPT activities in the first year have a positive impact on society includes: improving the quality of governance and socio-economics of community, improving moral and character, and improving conservation of natural resources.

Keywords
agricultural technology, papaya fruit plant, PPMUPT

Topic
Urban Development and Resilient Community

Link: https://ifory.id/abstract/FvV7xqhgLGAm

Corresponding Author
Alfonds Andrew Maramis

Institutions
Department of Biology, Faculty of Mathematics and Natural Sciences, State University of Manado (UNIMA), 95618 Minahasa, Indonesia

Abstract
Raanan Baru, a village which is the capital of West Motoling Subdistrict, South Minahasa Regency has potential in the field of agricultural food crops such as lowland rice, field rice, corn, peanuts, cassava, sweet potatoes, and taro. This potential is less manageable to the maximum because of various problems, such as: cropping systems are still traditional and hereditary, food production is still low, farmers are lack in innovation and limited in creation of agricultural products, non-rice food plants grow wild and not cultivated commercially, farmers knowledge related to market access and opportunities is limited, and many other problems. To address these problems, a community service, Program of Partner Village Development (PPDM) scheme has been carried out for three years (2017-2019) with a focus on developing Raanan Baru Village as a non-rice food independent village. Methods of implementation include: socialization, technical guidance, training, pilot projects, and workshops. The applications of science and technology includes: techniques for cultivating non-rice food crops, improving the quality and diversification of non-rice food crop products, pilot plant projects, and introducing the basics of entrepreneurship for farmer group partners. The results of the implementation of the activity showed an increase in the competitiveness of non-rice farming products (cassava), an improvement in the existence of natural resources, and an increase in community welfare.

Keywords
self-sufficient village, non-rice food, welfare of community

Topic
Urban Development and Resilient Community

Link: https://ifory.id/abstract/XxYVQ4dU9bfj

Corresponding Author
Alfonds Andrew Maramis

Institutions
1 Department of Public Administration, Faculty of Social Sciences, State University of Manado (UNIMA), 95618 Minahasa, Indonesia
2 Department of Biology, Faculty of Mathematics and Natural Sciences, State University of Manado (UNIMA), 95618 Minahasa, Indonesia
3 Department of Electrical Engineering, Faculty of Engineering, State University of Manado (UNIMA), 95445 Tomohon, Indonesia

Abstract
Talaud Islands is a regency in North Sulawesi Province which is the northernmost region of Negara Kesatuan Republik Indonesia. The condition and geographical location make this area included in the category of frontier, outermost, and disadvantaged regions. Consequently, people of this region experience various limitations in utilizing local resources to meet their daily needs. A community service activity, Produk Teknologi yang Didesiminasikan ke Masyarakat scheme has been carried out in this area with the aim of applying technology that utilizes integrated energy sources in the form of solar cells, gas, and closed furnaces in the processing of various agricultural food crop products (corn, soybeans, and beans) and plantations (nutmeg and cloves). The approach method applied in the implementation of this activity is a combination of pilot project methods and the application of technology products especially cabinet-shaped dryer technology that utilizes integrated energy sources for postharvest processing of agricultural food crops and plantations. The technology resulting from the research and development of the implementation team can be applied to meet the needs of the people of the Talaud Islands. The following impact arising from the implementation of this activity is an increase in regional potential and community participation.

Keywords
drying technology, integrated energy sources, postharvest processing in agriculture, regional potential, community participation

Topic
Urban Development and Resilient Community

Link: https://ifory.id/abstract/987Lxv3n4FBM

Corresponding Author
Alfonds Andrew Maramis

Institutions
1 Department of Biology, Faculty of Mathematics and Natural Sciences, State University of Manado (UNIMA), 95618 Minahasa, Indonesia
2 Department of Out of School Education, Faculty of Educational Sciences, State University of Manado (UNIMA), 95445 Tomohon, Indonesia

Abstract
The Government of the Republic of Indonesia through the National Development Planning Agency (Bappenas) established Dayow Village as one of the pilot projects village included in the National Priority Rural Areas (KPPN). This designation aims to narrow the gap between urban and rural areas (especially border and remote villages), and free these village areas from isolation, low human resources, and uneven levels of family income. Dayow Village has abundant and potential local resources (such as livestock and agricultural plantations: coconut, cloves, cocoa, etc.) but have not fully increased the income and welfare of the community due to the isolation of the region which has implications for the limited variety of accessibility of community life. A Community Service Program, The Application of Appropriate Technology Program (PPTTG) scheme has been held in Dayow Village with the aim to: 1) increase community knowledge and skills in mastering the technology of reproduction and production of goat livestock, and in processing livestock waste into solid and liquid organic fertilizer; and 2) increase community economic income. The method used as a form of community empowerment in Dayow Village is a combination of methods of application of sciences and appropriate technology of superovulation to improve the reproduction of goats. The results of this activity show that the superovulation technology products which are the results of research and development of the implementation team can be applied to meet the needs of the people of Dayow Village. This activity is also able to increase regional potential and community participation.

Keywords
superovulation technology. regional potential, community participation, PPTTG

Topic
Urban Development and Resilient Community

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

Corresponding Author
Dewa Gede Raka Wiadnya

Institutions
*Ichthyo-fauna, Faculty of Fisheries and Marine Science, Universitas Brawijaya

Abstract
Local fishermen realized the collapse of River Barb was due to their destructive fishing behavior such as tuba, cyanide, blast and electro-fishing. A volunteer of 30 fishers took initiative to stop all the destructive activities and declared a 200 m of river body forbidden from any extractive activities. For a period of more than 2 years (2016-2017), they fed the river with rice leftover from the households. Fish population is now recovering back and this gradually attract local tourism. This study aimed to empower the group, Fajar Bengawan, to develop tourism service while conserving the river and used it as learning site for other groups in the region. Four Gazebos, visitor information service, kitchen set and facilities for night fishing were delivered to the group, as well as short training to improve their capacity in eco-tourism management. Four tourism attractions have been established by early 2019: fish feeding in nature, river adventure, meeting outbond, and night-pole fishing. On average, the group earned IDR. 81,000,000±5,000,000 month-1 (equal to $ 5,343351 month-1) from visitors. With tourism branding of Omah Iwak Badher Bang, literally means fish apartment of River Bard (www.google.co.id), the destination is getting open to public. Government of East Java awarded first medal to the group as conservation frontliner. The conservation success is to be outreached to other 397 similar groups in East Java through fisheries community meeting called “cangkru-an”.

Keywords
river protected area, community development, tourism, East Java

Topic
Sosical Economic and Community Development

Link: https://ifory.id/abstract/tzX4WaKVrwJv

Corresponding Author
Aida Maysriwigati Mustafa

Institutions
Agung Podomoro University

Abstract
Regulation of maximum term of transition period is 1 (one) year, and cannot be extended is an important aspect for the transition process of the Rusun Management from the Developers to PPPSRS. Practically, the Rusun Magament by Developers run over the term of transition period. Based on these, the authors will study 3(three) principle purpose of the law (rule of law, justice and benefit) regulation in term of transition period, by using The Economic Analysis of Law approach and normative law research methods. Based on the analysis, it was concluded that during the term of transition period, the amount of costs that must be spent by the Developers during the 1 (one) year term of transition period to manage the Rusun, is greater than the results obtained, causing the Developers to incur losses. This reflects that the term of transition period regulation does not provide justice and benefits for the Developers, as contained in the concept of utility and benefit principle, so that it is not a rational choice for the Developers to manage the Rusun for 1 (one) year in the term of transition period. With no sanctions for Developers who manage the Rusun over the term of transition period, this is contrary to the concept of efficiency and the principle of Legal Certainty.

Keywords
Rusun, Sarusun, Developers, PPPSRS, Transition Period, and Rusun management

Topic
Private Law

Link: https://ifory.id/abstract/ZzQfkA6pBWDM

Corresponding Author
Muhammad Ihsan Andi Dagong

Institutions
Faculty of Animal Science, Hasanuddin University (Jln. Perintis Kemerdekaan Km. 10, Tamalanrea, 90245. Makassar South Sulawesi, Indonesia)

Abstract
Boer are one of the goats with high growth potential and have good fertility. The expected advantage of the results of the crossing between Boer and Peranakan Ettawa (PE) goats is the effect of heterosis and breed complementary from its offspring which is characterized by good growth performance. The purpose of this study was to compare the offspring performance of Boer crossbred and Peranakan Ettawa in the same intensive production systems. The mating model used was a crossing model of Boer Fullblood buck as a source of genes mated with Peranakan Ettawa goat does which would be compared with the performance of native Peranakan Ettawa goats. This study was used 20 heads of goat divided into two experimental groups, namely crossing Boer groups (n = 10 heads), and Peranakan Ettawa goats (n = 10 heads). The measured performance parameters include birth weight, 1 month body weight and pre-weaning body weight. To see the difference between the two treatment groups, the data were analyzed using student t-test statistics. The birth weight of Boer cross goats has 4.25 ± 0.9 kg which was higher than Peranakan Ettawa goat (3.75 ± 0.5 kg), while the weight at 1 month age also shows a higher performance of Boer cross goats than Peranakan Ettawa goats (8.45 ± 1.9 vs 5.94 ± 0.8 kg) with the performance of average daily gain (ADG) which was also much higher (102.5 ± 93 vs 89 ± 26 g). Boer cross kids growth performance shows higher growth performance compared with Peranakan Ettawa kids. The Boer and Peranakan Ettawa goats crossing program produces a good heterosis effect to improve the performance of local goats, especially local goats that are maintained intensively in the Sulawesi region, Indonesia.

Keywords
Boer Crossbred, Growth Performance, Intensive, Crossing, Heterosis

Topic
Breeding and livestock production

Link: https://ifory.id/abstract/8ehJNGVDQmUp

Corresponding Author
Muhammad Ihsan Andi Dagong

Institutions
Faculty of Animal Science, Hasanuddin University (Jln. Perintis Kemerdekaan Km. 10, Tamalanrea, 90245. Makassar South Sulawesi, Indonesia)

Abstract
Goats are one of the mainstay commodities for farmers in rural areas, especially in several development centers in the Sulawesi region, Indonesia. Generally the local goats that are kept are Kacang goats which are the type of broiler, but since the introduction of the Ettawa breed most of the goat population that is currently being kept is from the Peranakan Ettawa (PE) goat which is a cross between Kacang and Ettawa goats which later develop into dual-purpose goats (meat and milk). The purpose of this study was to characterize the phenotypic (qualitative and quantitative) properties of Ettawa crossbreed goats which were maintained by communities in the Sulawesi region, Indonesia. This study used a survey method by identifying the qualitative and quantitative performance of the Ettawa crossbreed goat population. Characterization activities carried out were to identify the performance criteria of qualitative traits which included the characteristics of horn color and shape and quantitative properties such as body weight, height, body length and chest circumference and chest width. A total of 113 goats (111 females and 2 male Ettawa breeds) were selected to be used as samples from the existing goat population. Peranakan Ettawa breeding performance based on morphometric data included the characteristics of shoulder height (67.98 ± 5.61 cm), back height (71.34 ± 5.73 cm), body length (71.70 ± 6.46 cm), chest circumference (72.19 ± 6.46 cm), chest width (15.41 ± 1.86 cm) and body weight (33.04 ± 6.09 kg). The qualitative and quantitative performance of Ettawa breeds in South Sulawesi is very diverse and does not meet national quality standards (SNI).

Keywords
Peranakan Ettawa, Selection, Qualitative trait, Quantitative trait, Performance

Topic
Breeding and livestock production

Link: https://ifory.id/abstract/qz8bUcXyLWZd