Indonesia Conference Directory

Corresponding Author
Ella Fitriani

Institutions
Universitas Negeri Jakarta, Chemistry Education Department, Faculty of Mathematics and Natural Sciences, Jalan Rawamangun Muka 13220, Jakarta, Indonesia

Abstract
There are difficulties for first-year chemistry students to adapt to chemistry laboratory activity since they are lack of experience in their school. As a result, it affected their confidence and even their safety in the laboratory. One of the very basic skills in chemistry laboratory is the titration. This multi-year study aims to design and develop chemistry pre-laboratory demonstration videos to make students familiar with the skills before they start the laboratory activity. The data were collected by questionnaire, documentation, and interview. Based on the evaluation of users and experts, usability and feasibility of the videos were categorized very high. Moreover, corrections and suggestions are implemented to improve the chemistry pre-laboratory demonstration videos quality.

Keywords
pre-laboratory; demonstration video; titration; basic chemistry

Topic
Chemistry

Link: https://ifory.id/abstract/mp9t7w8PZMqC

Corresponding Author
Ratna Komala

Institutions
a) Department of Biology, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Indonesia

Abstract
One group of organisms that can be used as bioindicators of water quality is benthos, these organisms are spread over several habitats and also in coastal areas, one of which is in the seagrass ecosystem on Bira Island, located in the Kepulauan Seribu Jakarta. The aim of this study was to determine the dynamics of benthic population as an illustration of the environmental conditions on Bira Island for 6 months of observation. The method used in this study was descriptive with survey design. Data collecting by purposive sampling with the transect method at 3 observation stations. The data were analyzed descriptively through the calculation of abundance, diversity and dominance. The results of the study identified 23 species of benthos included in the 3 phylum with the largest to lowest composition represented by molluscs, arthropods and echinoderms phylum. The benthic population fluctuates and shows a pattern of decreasing trends every month during observation. The abundance of the highest species of each phylum is represented by Turicula javana (Mollusc), Portunus sp (Arthropods) and Holothuria atra (Echinoderms. The Species Abundance based on the observation station shows that the highest abundance is at station 1, followed by station 2 and the lowest is station 3. Benthos diversity at each station is in the moderate category, and there is no dominant species

Keywords
Benthos; Bira Island; Seagrass; Kepulauan Seribu

Topic
Biology

Link: https://ifory.id/abstract/gKb4dhqMWTzZ

Corresponding Author
Sri Mulyaningsih

Institutions
Institut Pendidikan Indonesia Garut

Abstract
ABSTRACT. The pruning waste of Java apple (Syzygium samarangense) tree branch can be used for its propagation by stem cuttings. The rooting process can be accelerated with the help of growth regulators, one of which is betung bamboo shoot extract. Using a randomized block design, this experiment aims at examining the effect of betung bamboo shoot extract with concentrations of 0%, 10%, 20%, 30%, 40% and 50% on the growth of Java apple stem cuttings. The samples were 48 stem cuttings with a diameter of 1 cm and a length of 15 cm. The results showed that betung bamboo extracts could accelerate the propagation process. The optimum concentration was 50%.

Keywords
Keyword: Java apple stem cutting, betung bamboo shoot extract, propagation acceleration.

Topic
Biology

Link: https://ifory.id/abstract/YtwukxJK3BbF

Corresponding Author
Melati Ferianita FACHRUL

Institutions
a) Department of Environmental Engineering, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia

*melati[at]trisakti.ac.id

Abstract
At present, plastic waste is one of the problems that is growing in Indonesia. Plastics take more than 400 years to degrade naturally. One way to degrade plastic waste is by biodegradation. This study aims to degrade Linear Low Density Polyethylene (LLDPE) plastic using mixed culture bacteria Pseudomonas aeruginosa and Brevibacterium sp. The research conducted using plastic cutting 1 x 1 cm in size, as much as 10 gram was put into petri dish containing Nutrient Broth (NB) growth medium. The biodegradation process is carried out for 3 months with the test parameters being temperature (⁰C) and acidity value (pH). Gravimetric and Fourier Transform Infrared (FT-IR) methods were used to determine the weight, morphology, changes in structure and surface of polyethylene. The results showed that mixed bacterial culture has the potential to degrade LLDPE plastic with a percentage reduction of 15% at 35 ⁰C for 5 days. This study proves that mixed culture of bacteria can degrade LLDPE plastic by using it as a carbon source

Keywords
Plastics; Biodegradation; Pseudomonas aeruginosa; Brevibacterium sp

Topic
Environmental Engineering

Link: https://ifory.id/abstract/AV2WaYerP3up

Corresponding Author
Ni Made Darmadi

Institutions
Water Resources Management Study Program, Faculty of Agriculture, Warmadewa University, Denpasar, Bali
*Email: nimadedarmadi[at]gmail.com

Abstract
This study aims to determine the growth pattern and maturity level of gonad cork fish living in Tukad Yeh Sungi and Subak Baru irrigation channel. This research uses observation method, descriptive and analytic method. Sampling method directly catch fish in the cork by using fishing gear then analytic and described. The samples counted 101 fish samples. Using analytical and descriptive data analysis techniques. The results of the study found the growth pattern of cork fish in negative alometric river while in the irrigation channel for the positive allometric female and the negative alometric male.The maturity level of gonad of cork fish seen directly from the surgical result is influenced by the weight and weight of the fish weight.

Keywords
Biological Study, Growth Pattern, Gonad Maturity Level

Topic
Biology

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

Corresponding Author
Dewi Syavitri Husein

Institutions
Geology Department
Faculty of Earth and Technology
Trisakti University

Abstract
The research area is in the X Well which located in the North Sumatra Basin. There have been several studies conducted in the area, but there is still very little information related to the age of the Formations in the basin. A total of 128 sample are used for lithostratigraphy analysis, in which 33 samples were analyzed further for the Foraminifera biostratigraphy study from the X Well at a depth of 6090 – 9919 feet. From the result of the analysis, 38 species from 16 genera successfully identified, as well as 5 datum species, namely Globigerinoides sicanus, Orbulina suturalis, Globorotalia menardii, Globorotalia plesiotumida dan Globorotalia tumida tumida. From the lithology data, three (3) lithostratigraphic unit successfully identified, namely the calcareous claystone, very fine calcareous sandstone and fine calcareous sandstone unit which is estimated to be comparable to the Baong, Keutapang and Seurula Formation. From the result of the study it-s concluded that the lithostratigraphic units found in the study area have the age range of N7-N18 or late part of the Early Miocene to the late part of the Late Miocene.

Keywords
Biostratigraphy, planktonic foraminifera, North Sumatra Basin.

Topic
Biology

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

Corresponding Author
Tri Handayani Kurniati

Institutions
a) Biology Study Program, Faculty of Mathematics and Natural Sciences, Jakarta State University.
Jl, Rawamangun Muka, Rawamangun,. East Jakarta 13220. Indonesia.
b) Department of Biology, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University.
Jl. Raya Darmaga, Bogor16680, West Java. Indonesia.
c) Department of Industrial Technology, Faculty of Agriculture Technology, Bogor Agricultural University
Jl. Raya Darmaga, Bogor 16680, West Java. Indonesia.
d) Department of Biology, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University.
Jl. Raya Darmaga, Bogor 16680, West Java. Indonesia.

Abstract
Anthracene, together with other polycyclic aromatic hydrocarbons (PAHs), is a persistent and toxic soil contaminant because its low water solubility and high hydrophobicity. The effectiveness of PAH degradation could be enhanced by using biosurfactant. In this study, we isolated bacteria that were able to degrade anthracene and also produce biosurfactant. Samples were taken from oil contaminated soil at Jakarta Bay. Isolation was done in a Minimal Salt Medium (MSM) supplemented with 1% crude oil. Screening methods for biosurfactant production include Blood Hemolysis, Drop Collapse Assay and Oil Displacement Assay. Three isolates which have biosurfactant production and anthracene degradation capability was identified based on 16SrRNA gene. These isolates were identified as Ochrobactrum intermedium AMA9, Ochrobactrum tritici CHA60, and Pseudomonas stutzeri CRA7. Based on GC-MS analysis, Ochrobactrum intermedium AMA9 showed high ability to degrade 84,79% anthracene in liquid MSM medium supplemented by 100 ppm anthracene after seven days incubation.

Keywords
anthracene; bacteria; biosurfactant; degradation

Topic
Biology

Link: https://ifory.id/abstract/nZCGH3FtjKkh

Corresponding Author
Arif Budiraharja

Institutions
Universitas Pendidikan Indonesia; Universitas Garut; Universitas Pendidikan Indonesia

Abstract
The Blockchain system is a widely distributed database on the network, this technology has a significant impact on the business industry and financial services. The purpose of this research is to design a blockchain for sharia banks. The study was conducted on several Islamic banks in Indonesia. Based on the results of the study it was found that the blockchain design must be adjusted to the needs of banking users first and adjusted to the capabilities of the technology infrastructure. The existence of a blockchain can cause disruptive to human elements in the presence of distributed ledgers, therefore the transition of blockchain technology must be carefully planned.

Keywords
Blockchain System; Financial Technology, Sharia Bank.

Topic
Management Science

Link: https://ifory.id/abstract/fJR6YhMrUTeV

Corresponding Author
Maisevli Harika

Institutions
Department of Computer and Informatics Engineering, Politeknik Negeri Bandung, Indonesia
2Interdisciplinary Program of Information Security, Graduate School PKNU
Department of IT Convergence and Application Engineering
Pukyong National University, Busan, South Korea,
2Department of Informatics, UIN Sunan Gunung Djati Bandung, Indonesia

Abstract
Medical record (MedRec) of the patient is derived from several healthcare providers i.e. hospital, the national provider, and laboratories which contains personally identifiable information test yet referred to therapeutic procedures and medications of the patient. MedRec has been compiled and maintained by several providers thus resulting in separated and disseminated the data among the parties. Mostly, the MedRecs are stored in providers database and the patients have no control to manage and access their data. Hence, in this paper, we propose a conceptual model for managing the data of medical record using blockchain technology in the peer-to-peer network with several protocols are embedded in the system. The proposed model aims to facilitate the patients in order to manage their data from various providers into a single view. Blockchain offers the promise of an immutable, single source of truth from multiple sources and facilitates a trust as well as validates an identity without the third-party involvement.

Keywords
blockchain, decentralized, medical record, peer-to peer network

Topic
Computer Science

Link: https://ifory.id/abstract/u9Ccp3fZTMmj

Corresponding Author
Rini Puspitaningrum

Institutions
1. Department of Biology, FMIPA Universitas Negeri Jakarta
2. Human Medicine, JLU Giessen Germany
3. Medical Doctor, UIN Syarif Hidayatullah Jakarta
4. Department of Physics, Universitas Negeri Jakarta
5. Department of Biological Educational, FMIPA Universitas Negeri Jakarta

Abstract
The Bajau sea nomads as a famous tribe Indonesia. Bajau can breathe in sea water more than 3 minutes. There have been studies conducted on the Bajau tribe before, but this research will discuss the analysis of the Bajau tribes blood gas. The 20 people from the Bajau Tribe agreed, after the interview was taken, blood would be collected to find out how much PaO2 was. It was found that all the Bajau tribes had a PaO2 yield of more than 95%, which indicated that the oxygen in their blood was very high. Average depth above 3 meters.

Keywords
Bajau sea nomads tribe, diving, breathing adaptation

Topic
Biology

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

Corresponding Author
Dini Destiani Siti Fatimah

Institutions
Departement of Informatics, Sekolah Tinggi Teknologi Garut
Jalan Mayor Syamsu No. 1, Jayaraga, Garut 44151
*dini.dsf[at]sttgarut.ac.id

Abstract
Human body measurements or anthropometry are carried out, among others, to meet industrial and health needs. Products that will be used by humans need to use anthropometry to suit the people who use them. The use of anthropometry in health, among others, is used as an indicator of health as well as a persons nutritional level. The measure that is widely used for the criteria for human health is weight. Based on body weight can be determined the level of health and the possibility of a disease suffered by a person. Knowledge of weight anthropometry is packaged in the form of an expert system so that it can be used for consultation by people who have health problems based on body weight. The methodology used in this design uses Expert System Development Life Cycle, as well as knowledge representation techniques use artificial intelligence production systems. The design results are dynamic software, which is able to overcome diseases based on body weight data. Disease is divided into two categories, namely diseases based on high body weight and low body weight. Expert System has been validated by an expert. The validation results describe the expert system can provide solutions that are in accordance with the knowledge provided. The resulting system can be run by lay people in the training process for 2 hours. The conclusions from this study are that expert systems are able to be applied to assist humans in introducing effective and efficient weight-based anthropometric diseases. The artificial intelligence production system provides a knowledge base, rule base, and control strategies for finding weight anthropometric solutions.

Keywords
Antropometry, Expert Systems, Human health, Validation test.

Topic
Computer Science

Link: https://ifory.id/abstract/MHezwrYvjyb8

Corresponding Author
Frederikus Fios

Institutions
Character Building Development Center, Computer Science Department, Bina Nusantara University, Jakarta, Indonesia

Abstract
The environmental crisis that hit the global world has threatened the future of the human being and all living in the world. The root of the environmental crisis today that is due because of the "human factors". Human mindset embodied in various forms of exploitation of the natural act of damaging our environment tragically. Understand anthropocentric is so permeated human thought patterns stimulate human passion to continue to exploit nature without human arbitrarily. Natural objectified and regarded as a place to suck it for the benefit of human. And nature environment needs to be protected by human as moral person. One way to protect nature is not a great design technology, but change the mind set of people from anthropocentric paradigm to eco-centrism awareness in order to protect the environment entity. Using reflection methods especially deconstruction of Derrida, continuously critical of anthropocentric is a must as one way to protect the environment in theoretical thinking frame. Through this frame of thinking, it can constructed the concept of ecological awareness for protecting environment and the good condition to the earth and all reality of life.

Keywords
Building, Anthropocentric, Eco-Centrism, Awareness, Protect, Environment

Topic
Environmental Engineering

Link: https://ifory.id/abstract/XHeqKJ3U2Ybh

Corresponding Author
Tonmay Saha

Institutions
a)Military Institute Of Science And Technology
*tonmaysaha002[at]gmail.com

Abstract
Abstract: Due to the technological advancement and continuous power demand increase in the world, nuclear power plays a vital role. The concept of small modular reactor which has power generation capability less than 300MW has gained worldwide attention due to its smaller footprint, co-generation capability, nuclear core design simplicity and non-proliferation characteristics. The aim of this study is to calculate the reactivity worth for SMR by using in-house developed computer program. Two-group neutron diffusion equations have been used to calculate following parameters: material and geometrical buckling, effective multiplication factor, thermal flux, reactor core radius and height, reflector savings, volume of fuel and moderator and nuclear fuel cycle length. C++ computer program has been used to simulate the whole process by iteration technique for cylindrical core. The neutron distribution along the axial and radial direction of nuclear fuel rod has also been analyzed. Boron Carbide has been selected as control rod materials. How the neutronics parameters change with respect to time has been observed. Works are in progress to develop a complete conceptual design of a SMR which will be useful in remote areas.

Keywords
Core Design, Neutronics, Boron carbide , Control rod, Reactivity

Topic
Physics

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

Corresponding Author
Lipur Sugiyanta

Institutions
UNIVERSITAS NEGERI JAKARTA
Jln. Rawamangun Muka Raya, Jakarta Timur, 13220

Abstract
OSPF (Open Shortest Path First) is routing protocol that are widely used in computer networks. Selection of routing protocols is very important in improving network performance. Calculation of OSPF metrics will determine the performance of data packet delivery. It based on Shortest Path Tree. To find the best route from source to destination, it must determine the shortest path between itself and each router in the network. The router creates this perspective by taking the information in the LSDB and transforming it into a shortest path first tree or SPF tree. It is an algorithmic calculation to construct logical network view performed by the computer within the router. To speed the construction of network tree, PDU size variable is proposed to increase the speed of data packet communication among routers. This research was using Cisco Packet Tracer 5.3 software, simulations were made on a campus network whose PDU variables were modified to obtain the optimum network tree with OSPF routing protocol. The weighted testing parameters in this study is time delay values. Hopefully, the value of redistribution delay is 1% better depending on traffic density. Main route retrieval and alternative package delivery are based on the smallest cost and metric values in the OSPF protocol.

Keywords
campus network, OSPF, SPF tree, time delay, metric

Topic
Computer Science

Link: https://ifory.id/abstract/n6dUTVyE89XQ

Corresponding Author
Zico Arman

Institutions
a) Biology Department, 9th Floor Hasyim Ashari Building, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta, Indonesia
b) Universitas Negeri Culture Collection, 9th Floor Hasyim Ashari Building, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta, Indonesia
c) Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), 81130 UTM, Skudai, Malaysia
d) Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia

Abstract
Indonesia has many fermented beverages and yeast become one of the agent in fermented process. Yeasts has a role to transform carbohydrate complex into simple compound with release secondary metabolism to environment like amylase enzyme. This study aim to get the isolate of yeast that can potentially produce amylase enzyme. This research conducted in Oktober 2018 until Maret 2019 in Microbiology Laboratory of Universitas Negeri Jakarta. The screening test of potential isolate producing amylase enzyme was perfomed on yeast isolate from eight source indigenous fermented beverages that can grow in YMA medium with pH 2. Screening was carried out on YPSA medium with difussion agar method. From 53 Isolates, there is 16 isolates were able to form clear zone during one day incubation in room temperature there are IB4, IB15, IB20, IB21, IB26, IB36, IL78, IL80, IL81, IL86, IL88, IL97, IL113, IL136, IL146, and IL150, the highest amylolytic index was produce by IL86 (1,019 U/ml). Forming the clear zone is proof that yeast can transform starch become simply sugar like maltose because iodine-starch reaction performed amylose helix and iodine become I3 that filled main core helix, even iodine forms complexes with starch molecules showed a dark purple colour

Keywords
Amylase, Fermented, Yeast

Topic
Biology

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

Corresponding Author
leni fitriani

Institutions
a) Department of Informatics, Sekolah Tinggi Teknologi Garut
Jl. Mayor Syamsu no 1, Garut, 44151, INDONESIA
*leni.fitriani[at]sttgarut.ac.id

Abstract
One of the many alumni problems that occurs after graduation is a lack of knowledge about working world and careers that they can take. There are still many universities that do not have career counseling for managing their students career. This problem happens because of the lack of students awareness to come to the career center to take part in career counseling. The purpose of this study is to create a student forum that contains career counseling with alumni. This forum is expected to be useful for alumni who need information about the working world. The methodology used in this study is the Unified Software Development Process whose stages are analysis model, design model, implementation model, deployment model, and testing model. Furthermore, it is modeled by using the Unified Modeling Language diagram, in the form of use case diagrams, activities, sequences, and class diagrams. This study took a sample from the Career Development Center of Sekolah Tinggi Teknologi Garut. The result of this study is the existence of a web-based career counseling forum that can help students and alumni interact with each other to share information and knowledge about the working world. Additionally, this career counseling is expected to help students and alumni to better understand their working world.

Keywords
Applications; Counseling; College students; University; Web.

Topic
Computer Science

Link: https://ifory.id/abstract/zxK2deUM34Zk

Corresponding Author
Luh Suriati

Institutions
Warmadewa University

Abstract
Abstract: Edible coating is biodegradable and eco-friendly packaging that current developments. Constituent components of edible coatings in the form of hydrocolloid (polysaccharides, proteins), lipids and composite. The edible coating serves as a protective material which is packed from outside influences also functions as a matrix of antimicrobial agents. Synthetic preservatives that many outstanding raises concerns of the community to use it, because of the high risk on health. One of the potential natural ingredients as an edible coating and also as a natural preservative is Aloe Vera gel. Aloe Vera is a polysaccharide that contains many components of bioactive, but the disadvantage easily becomes diluted. Aloe Vera gel should be kept on the proper environmental conditions. This research aims to know the influence of storage temperatures against characteristics of fillet Aloe Vera that potential as an edible coating. This study used a randomized complete design. Color fillet Aloe Vera clear white initially when stored at room temperature turns pink on day 2. While stored at cold temperatures the color change on day 4. The gel is stored at cool temperatures have pH and moisture content are relatively stable, decreased severity is also lower compared to store at room temperature

Keywords
Keywords: keyword 1; Edible coating 2; gel 3; Aloe vera 4; fillet 5; biodegradeable

Topic
Material Science

Link: https://ifory.id/abstract/Yh2TtnNzKZpM

Corresponding Author
RINI SETIATI

Institutions
3Geological Engineering Department, Faculty of Earth Science and Technology, Trisakti University, Jakarta

Abstract
Salawati Basin has 0.5 BBO and 0.1 TCFG oil and gas resources respectively. Hydrocarbon is generated from Tertiary and Pre-Tertiary source rock. Several source rock studies have been conducted, such as in Sirga Formation (Late Oligocene), Kais Formation (Middle Miocene), and Klasafet Formation (Late Miocene). Lack of knowledge in characteristics and thermal modelling study or source rock in Sirga Formation and Pre-Faumai, also curiosity to observe basin reverse polarity occurence is intriguing to be researched further. The purposes of this research are to know: a.) Sirga Formation and Pre-Faumai Formation source rock characteristics to generate hydrocarbon in Salawati Basin; b.) Maturity values based on %Ro, Tmax and 1D basin modelling. Research methodology was carried out using petroleum geochmistry analysis, including: TOC, Rock Eval Pyrolisis, kerogen typing, vitrinite reflectance (%Ro) from 9 cutting samples. Based on TOC parameter, organic-rich materials in both formations show good to very good quantity. On the other hand, PY parameter shows fair to good potency quality as source rock to generate hydrocarbon. Kerogen type composition dominated NFA which indicates oxidizing marine or lacustrine depositional environment. Crossplots between HI and Tmax shows kerogen mixture type II/III which indicates transition environment (fluvio-deltaic) depositional environment. Sirga Formation and Pre-Faumai (Oligocene) show low level maturity based on %Ro and Tmax. On the contrary, based on 1D basin modelling maturity of the source rock on Warir-1X well and WIR-1A (outside research area) show higher level maturity (early to mid-mature) since Middle Pliocene and progressed into late maturity stage on oil generation since Early Pleistocene. Depocenter, generally act as mature kitchen where hydrocarbon generated. Basin polarity reversal occurred since Pliocene and changed basin configuration i.e depocenter from on southern area becoming on northern area

Keywords
Salawati Basin, characteristics, maturity, 1D basin modelling, basin polarity reversal

Topic
Material Science

Link: https://ifory.id/abstract/u2cvGpgdKPMY

Corresponding Author
Ahmad Kholil

Institutions
Department of Mechanical Engineering Education, Engineering Faculty,
Universitas Negeri Jakarta, Kampus A Jl. Rawamangun Muka, Jakarta, 13220, Indonesia.
Email: ahmadkholil[at]unj.ac.id

Abstract
The study aims to determine the composite characteristics of wood powder, coconut fiber, and green mussel shells that will be used as material for electric motorcycle brake pads. Composites are made with three variations. The first sample (SK30K10CK10) consisted of 30% wood powder, 10% coconut fiber, 10% green clam shell and 50% polyester resin. The second sample (SK20K20CK10) consisted of 20% wood powder, 20% coconut fiber, 10% green clam shell and 50% polyester resin. And the third sample (SK10K30CK10) consists of 10% wood powder, 10% coconut fiber, 10% green clam shell and 50% polyester resin. All samples were tested for hardness and thermal testing. The test results are compared with commercial electric motorcycle brake materials. Based on the test results that the highest level of violence is owned by SK20K20CK10. The results of the specimen samples show that the highest decomposition point is the SK30K10CK10 specimen.

Keywords
composite, coconut fiber, wood powder, green clam shell

Topic
Material Engineering

Link: https://ifory.id/abstract/ftb2Yr8pXmWx

Corresponding Author
Ambar Sulianti

Institutions
UIN Sunan Gunung Djati

Abstract
Allergic rhinitis decreases the sufferers productivity so that it affects emotions. This study aims to examine emotional dysregulation in people with allergic rhinitis. This research is a quantitative study by analyzing emotional regulation instruments for 60 productive age allergic rhinitis sufferers. Statistical analysis of Kruskal walls and post hoc Mann Whitney between aspects showed that there were 3 groups of emotional regulation levels. The results showed that patients with allergic rhinitis had low self-control and confidence. Respondents have moderate emotion managing, emotion modify, and concentration levels. There were no difficulties in evaluating emotions in the research subjects. Allergic rhinitis causes an embarrassed person to face other people when sneezing and snot. The condition of sudden sneezing and the urge to itch the nose makes it difficult for respondents to control themselves. However, patients with allergic rhinitis can still concentrate on their work and can manage and modify their emotions.

Keywords
allergic rhinitis, regulation of emotions, confidence, concentration, emotional modification.

Topic
Biology

Link: https://ifory.id/abstract/y4uXjNEtvT3W

Corresponding Author
ni putu diah witari

Institutions
a) Faculty of Medicine and Health Sciences, University of Warmadewa, Denpasar, Bali
*) diahwitari[at]gmial.com
b) Mangusada General hospital, Badung, Bali

Abstract
Premature rupture of the membranes is the spontaneous rupture of the membranes when it has not shown signs of labor, or if one hour later there are no early signs of labor. Some risk factors for premature rupture of membranes in the mother can be influenced by spelling factors, maternal age, parity, gestational age and a history of premature rupture of membranes (KPD). The purpose of this study was to determine the characteristics of maternity with premature rupture of membranes at Mangusada General hospital. This research is a descriptive study using secondary data. The results showed that the characteristics of maternity with early rupture of amniotic events in Mangusada General hospital were based on the highest maternal age at the age of 20-35 as many as 175 cases (70.6%), based on the highest age at term (> 34 weeks) by 213 cases (85.9%), based on the most parity occurred in nulliparous as many as 134 cases (54.0%), based on the majority of maternal occupations in private employment as many as 122 cases (49.2%), based on the previous history of KPD the most occurred in mothers without history Previous KPD was 218 cases (87.9%).

Keywords
premature rupture of membranes, Mangusada General hospital

Topic
Biology

Link: https://ifory.id/abstract/WxFMUVKP6RLe

Corresponding Author
Mirsa Umiyati

Institutions
Universitas Warmadewa

Abstract
Obesity is a pathological state as due to exceed to consumption of food according the recommended daily food. The effect of the big consumption of food is the incident of obesity in children. The other factor of obesity are less physical activity, genetic factor, and fast food consumption. In Indonesia obtained that the problem of overweight and obesity in children aged 5 to 12 consecutive years of 10.8% and 8.8%, is close to the estimated world figure in 2020. The highest prevalence incidence of obesity in Bali Province is in Badung regency followed by Denpasar and the lowest is in Karangasem regency. The aim of this study was to find out the characteristics of obesity in children aged range 9-12 years in West Denpasar. The research method was cross sectional approach which was carried out among elementary school children in West Denpasar. The characteristics was observed concist of gender, physical activity pattern, and diet. The result were showed as follow the most common obesity in the study was found in male children (57%). The highest percentage (53%) of obesity was at 11 years old which among children who often eat fast food. Obesity was found most often (53%) in children who often eat fast food, followed by children who rarely eat fast food (37%), and at least (10%) in children who never eat fast food. The obesity children who do light activity were 61%, moderate activity were 23 %, and heavy activity were 16% respectively. It was concluded that the highest obesity percentage was due to light physical activity was often eat fast food.

Keywords
children aged range 9-12 years, child characteristics, obesity

Topic
Biology

Link: https://ifory.id/abstract/yb6UdMLGa9xP

Corresponding Author
Ari Widayanti

Institutions
(a*) Civil Engineering, Institut Teknologi Sepuluh Nopember Surabaya
ariwidayanti1973[at]gmail.com

Abstract
This paper presented the characterization and performance of Asphalt Concrete contain Reclaimed Asphalt Pavement (RAP) and Coal ash as the waste material. The accumulation of RAP and coal ash require the maximal utilization as the road pavement. In terms of higher utilization of its performance, it is required to analyze the material characteristic and the material properties. The aim of this study is to obtained the performance of Asphalt Concrete contain RAP and filler based on coal ash. Filler variations consist of fly ash, bottom ash and geopolymer powder. Method used X-Ray Fluorescence, Scanning Electron Microscopy and Marshall Test. The results showed bulk density of 1.8 gr/cc, stability of 2,771.1 kg, stability residue of 47.1%, flow of 5.3 mm, VIM (Voids in Mix) of 12.0%, VMA (Voids in Mineral Aggregate) of 19.3%, VFB (Voids Filled Bitumen) of 47.1%. The better performance of asphalt concrete mixture is RAP, original asphalt, aggregate and filler bottom ash.

Keywords
Reclaimed Asphalt Pavement, coal ash, asphalt concrete

Topic
Civil Engineering

Link: https://ifory.id/abstract/xREuN2WZJbtG

Corresponding Author
Darmadi Darmadi

Institutions
Chemical Engineering Department, Faculty of Engineering, Universitas Syiah Kuala

Abstract
The modified-polyurethane-foam adsorbents for mercury adsorption can typically reduce the potential impact of mercury pollution. This study aims to investigate the essential characteristics of adsorbents, made of castor oil, methylene diphenyl diisocyanate, glycerol, merely modified by zeolite and bentonite addition. Polyurethane foam with optimum performance is further characterized to find out its physical and chemical properties including: functional groups (FTIR), surface morphology (SEM) and specific area (BET). The FTIR characterization show that polyurethane foams without necessary modification typically contains a C = O group as its typical group scientifically shown by its specific wavelength (1654–1516 cm-1, 1680–1514 cm-1, and 1593–1516 cm-1). The modified-polyurethane foam properly contains a C = CH group with a typical wavelength of 3008 cm-1 with zeolite addition. It also shows the visible wavelength of 3007 cm-1 with bentonite addition. The SEM characterization show that zeolite-modified-polyurethane foam properly maintains a smooth and flat structure with small pores, whereas polyurethane foam with bentonite typically has an irregular particle shape. The obtained BET area for sample 60% zeolite, 50% MDI and 40% gliserol is precisely 2.8257 m2/g. Whereas for the narrowest BET area in sample 40% zeolite, MDI 50%, and gliserol 60% is merely 0.773 m2/g.

Keywords
polyurethane, polyurethane foam, characterization, zeolite, bentonite

Topic
Chemical Engineering

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

Corresponding Author
Budi Lukman Hakim

Institutions
Sekolah Tinggi Teknologi Garut

Abstract
The oxide and nano ceramic system of Mullite-Magnesia-Yttria Stabilized Zirconia were studied. Some fracture toughness models were examined to evaluate crack length parameter whether comply with Palmqvist and median crack criteria at c/a ratio equal to 3.0. The mullite crystal structure was observed using SEM and looks likely needle, whereas 3YSZ crystal appears smoother. Through EDS analysis, it detected the oxides in Mullite system i.e. Al2O3, and SiO2. With similar method, some oxides were observed in the Mullite-Magnesia-3YSZ system such as MgO, Al2O3, SiO2, Y2O3 and ZrO2. With XRD analysis, nano MMZ system shows containing Al6Si2O13, Corundum (Al2O3), Zirconia (ZrO2), and Quartz (SiO2). Fracture toughness KIC of the ceramic composite of nano mullite-magnesia-zirconia complies with Palmqvist and median crack criteria. Nano ceramic particle shows higher value of hardness and fracture toughness while compared with oxide ceramic system.

Keywords
Fracture Toughness, Mullite, Nano ceramic composite, Yttria Stabilized Zirconia

Topic
Material Engineering

Link: https://ifory.id/abstract/wM2ucgWkyNer

Corresponding Author
Ni Made Defy Janurianti

Institutions
1 Food Science and Technology Department, Faculty of Agriculture, Warmadewa University, Indonesia
2 Agrotechnology Department, Faculty of Agriculture, Warmadewa University, Indonesia

Abstract
This research aims to know the old fermentation influence the chemical changes during storage on coconut oil. Coconut oil is made with fermented pineapple extract as much as 15%. This study is a Randomized Design with factorial experiment complete consisting of two factors. There are factor long fermentation and long storage The observed variables against the coconut oil include objective observations i.e. water content, free fatty acids, peroxide, levels of dirt and acid number. The characteristics of coconut oil during storage tend to change but still meet Indonesian National Standard No. 01-2902-1999. From the results of research on the long fermentation 12% with prolonged storage 0 weeks gives the characteristics of the best oils than any other treatment that is the average value of water content, the level of dirt, free fatty acids, peroxide and acid number respectively i.e. 0.17%, 1.56%, 0.53%, 1.45% and 2.20%. During the storage of chemical changes tend to occur on coconut oil. The value of the average water content, the level of dirt, free fatty acids, peroxide and acid number highest obtained on treatment of fermentation 36 hours and long storage of 3 weeks in a row with a value of 0.50%, 3.70%, 0.85%, 2.51% and 4.38%.

Keywords
Coconut Oil, Pineapple Extract, Fermentation, Storage

Topic
Chemistry

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

Corresponding Author
Yuli Rahmawati

Institutions
(a) Universitas Negeri Jakarta
Jl Rawamangun Muka, Jakarta Timur
*yrahmawati[at]unj.ac.id

(b) Universitas Halu Oleo
Jalan Kampus Bumi Tridharma, Andunohu, Kambu, Kendari, Sulawesi Tenggara

Abstract
This study aimed to analyse the students- cognitive structure on the concept of oxidation reduction by employing learning cycle 8E model. The participants of 32 students in year-10 were involved in the study. The data was collected by drawing writing technique presented through student worksheets, interview, observations, and reflective journal. The learning cycle 8E was applied which consist of engage, explore, e-search, elaborate, exchange, extend, evaluate and explain stages. Data analysis consists of data reduction, data presentation, and conclusion. Students- cognitive structure was divided into three categories which are an understanding, misconception and no understanding. Categories of understanding were found in the concept of redox, oxidizing agents and acid-base nomenclature and transitions. Students- misconception categories were found in redox applications and polyatomic. Students faced the challenges in understanding the oxidation number and binary nomenclature. The results showed that misconceptions were decreased through the implementation of the learning cycle 8E. Learning cycle 8E also has implications on students- critical thinking, collaboration, and empathy communication skills.

Keywords
learning cycle 8E model, drawing writing technique, reduction oxidation drawing writing technique, cognitive structure, misconceptions

Topic
Chemistry

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

Corresponding Author
Tritiyatma Hadinugrahaningsih

Institutions
Universitas Negeri Jakarta, Chemistry Education Department, Faculty of Mathematics and Natural Sciences, Jalan Rawamangun Muka 13220, Jakarta, Indonesia

Abstract
This research aimed to develop the chemistry students- soft skills students through acid-base learning by integrating Think Pair Square (TPSq) in socio critical and problem-oriented approach. The study involved 36 secondaty school students in year-11. The qualitative research methodology with interview, observation, and reflective journal were employed to understand the process and engage the participants. The issues of 1000mg vitamin C, “kangen water”, and infused water in relation to acid-base concept water were used to encourage students- critical thinking in solve the problems. The results showed that students engaged and motivated in meaningful chemistry learning experiences, meanwhile the teacher were challenged in the role as facilitator. The students- soft skills of collaboration and communication skills, critical and creative thinking skills were stimulated within the process. The students have learnt to reflect on their own values during debate in solving the problems. Finally, the learning experiences have challenges both students and teacher in reflecting on their roles to create challenging academic environment.

Keywords
Socio Critical and Problem Oriented, acid base, think pair square (TPSq), soft skills

Topic
Chemistry

Link: https://ifory.id/abstract/x9jDeYbR4nKc

Corresponding Author
ARI SYAHIDUL SHIDIQ

Institutions
(a)Departemen Pendidikan IPA, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no 229, 40154, Bandung, Indonesia

(b) Program Pendidikan Kimia, Universitas Sebelas Maret, Jl. Ir. Sutami No. 36A, Kentingan, 57126, Surakarta, Indonesia

Abstract
Identifying students learning difficulties and finding the effective ways of addressing them have been the two of major concerns in chemistry education. The aims of this study were to identify students learning difficulties in hydrolysis. A formative assessment post-test was administered to 151 students in grade 11 using testlet instrument to find out their learning difficulties. Its findings could provide the teachers with sufficiently valuable information required in order to adapt their teaching methods to the students needs for chemistry sustainable curriculum development. The instrument contained 30 items distributed across three themes: scientific reasoning, numeracy and scientific language literacy. The results indicated that the students held learning difficulties on numeracy. The students had difficulties in controlling and interpreting the data. The possible uses of teaching methods, targeted remedial teaching and testing using testlet instrument for addressing students learning difficulties were discussed

Keywords
sustainable development education, pre-service chemistry teacher, hydrolysis

Topic
Chemistry

Link: https://ifory.id/abstract/avJ4d3gnYBrZ

Corresponding Author
Mesa Rahmi Stephani

Institutions
a) Universitas Pendidikan Indonesia
Jalan Setiabudhi No. 229, Bandung 40154, Indonesia
*mesarahmistephani[at]upi.edu

Abstract
The development of early childhood needs to be considered, considering the child is a parent investment in the future. Meeting the nutritional needs and education of children has the same important role in achieving optimal growth and development. The background of parents socio-economic status also becomes one of the factors that support the achievement of these needs. This study aims to determine the description of nutritional status in early childhood associated with motor development. The method used is ex-post facto in early childhood aged four to five years who have attended school in kindergarten. Nutritional status is known through height and weight, gross and fine motor development measured using ASQ 3rd edition, socioeconomic status (SES) of parents determined based on the questionnaire. Data is processed through STATA with chi-square analysis techniques. The results showed that there were no differences in nutritional status with motor development in early childhood attending school in kindergarten. The results of this study can be used as a consideration for the government to pay attention to nutritional status and motoric development of children, in an effort to minimize the gap between the quality of education and the various backgrounds of parents socio-economic status.

Keywords
Nutrition Status, Motor Development

Topic
Sport Science and Technology

Link: https://ifory.id/abstract/7tgEnWfkXyR2