Proceedings of the International Conference on Science and Technology (ICST 2018)
Rizka Hadiwiyanti, Prisa Marga Kusumantara, Dedi Anugrah, Tri Lathif MS
Quality measurement of rice is an important and necessary activity before it is sold to market. By distinguishing its quality, pricing will also be suitable by the physical characteristics of rice delivered by farmers. This paper proposed a prototype of DSS application to assist intermediaries in determining...
Mohamad Irwan Afandi, Eka Dyar Wahyuni
Higher education institutions have already started implementing business intelligence application in order to support university executives to make better decisions. Normally, an application is operated using a mouse, keyboard, or touch-screen device which in some cases is not suitable for the users....
Wahyu S J Saputra, C Aji Putra, Yisti Vita Via
In computer vision, image segmentation is a process of dividing image to get several segments of image. Image segmentation aim to divide image into simple section that meaningful and easy to analyze. Image segmentation regularly use to locate boundary of object in image, so object in image can analyzed....
M. Syahrul Munir, Eva Y Puspaningrum, Dimas Eko Wicaksono
The need for a prospective student to know the interest of the field of study at the college according to his intelligence becomes one of the complex problems. The selection of the right field of study makes the prospective students more enthusiastic to attend college and graduate on time. Therefore...
The Robust Regression Performance for Face Recognition with Lighting Condition Variation of Training Data
Budi Nugroho, Anny Yuniarti
In this research, the Robust Regression method used for face recognition tested its performance with illumination variations on the training dataset. Experiments were carried out using Cropped Yale Face Database B. By using this standard face database, generally the data for the training process used...
Minto Waluyo, Basuki Rahmat, Tuhu Agung Rachmanto, Mohamad Irwan Afandi, Helmy Widyantara, Harianto Harianto
Internet of Things (IoT) allows connections between devices using an internet connection with the ability to collect and exchange data. This research utilizes the IoT network to monitor the growth of koi fish in the pond. By utilizing the NodeMCU microcontroller, temperature and pH sensors, the sensor...
I Wayan Budi Sentana, Sri Andriati Asri, Naser Jawas, Anggun Esti Wardani
Convolutional Neural Networks (CNN) are biologically-inspired variants of Multiple Layer Perceptron (MLPs). Meanwhile, support vector machines (SVMs) are supervised learning models with associated learning algorithms that analyze data used for classification and regression analysis. In some research...
Ni Ketut Sari, Dira Ernawati, Intan Yuniar Purbasari, Basuki Rahmat
Glucose needs each year has increased significantly while glucose production has decreased, this is because supplies of the raw materials limited, where bamboo is one of the raw material alternatives to glucose. The selection of bamboo plants based on levels of cellulose which ranges from 42.4%-53.6%,...
Ni Ketut Sari, Khurniawati Khurniawati, Uman Fathoni, Widi Wurjani
Fermentation can be defined as a process of anaerobic oxidation of carbohydrate which produces alcohol and carbon dioxide. Batch fermentation is fermentation system closed, where there is no addition of new media, there are no additions (O2), antifoam, acid/alkaline pH control is done in a way. the fermentation...
Optimization of Slice Thickness, Drying Method, and Temperature of Turmeric Rhizome (Curcuma Longa L.) Based on Water Content and Functional Compound Degradation
Pirim Setiarso, Nita Kusumawati, Rusijono Rusijono, Supari Muslim
The research of oven-based drying technology on the production process of turmeric rhizome (Curcuma Longa L.) with thickness 0.15 and 0.30 cm have been. A number of parameters, such as slicing thickness, drying methods and temperatures are optimized, to achieve water and functional compounds (essential...
Tarzan Purnomo, Fida Rachmadiarti, Soegiyanto Soegiyanto
Estuary Porong is part of the east coast of Sidoarjo, East Java, which receives the Lapindo mudflow. Lapindo mudflow into the sea through the Porong river has caused sedimentation and changed the Porong river base substrate morphology so that it affects the organism that live in the estuary, especially...
Widowati Budijastuti, Nur Ducha, Dyah Hariyani, Sunu Kuntjoro
The purpose of this study was to evaluate the specific oxygen reaction on the body of Methapire postuma worms found in Pb metal contaminated areas. This study uses exploration methods with selected samples in Bangkalan. The body of the worm was cut off on the spermateka, vesicles and prostate sections...
The Morphological, Anatomical, And Physiological Characteristics of Elephantopus scaber As Explant Source For Tissue Culture
Yuliani Yuliani, Sari Kusuma Dewi, Fida Rachmadiarti
The purpose of this study was to describe morphological characteristic (leaf area, plant height, and leaf sheath), to describe anatomical characteristic (trichomes found in leaf sheath, veins, leaf blade and stem, to describe the physiological characteristic from phytochemical tests of secondary metabolites...
Enhancing Problem Solving Skills of Pre-Service Teachers by Integrating 21st Century Interdisciplinary Theme Into Science Class
Dhita Ayu Permata Sari, Wahono Widodo, Elok Sudibyo
Mastery of key academic subjects in school is not enough to succeed in the 21st century. Some specific skills, such as problem-solving, is needed. On the other hand, it is also important to foster understanding of academic content at much higher level by relating 21st-century interdisciplinary theme,...
Mohammad Budiyanto, Suhariningsih Suhariningsih, Moh Yasin
Research on fiber optic sensors with Quasi Gaussian beam has been carried out aiming to analyze the beam intensity profile of the light beam, sensor performance and sensor sensitivity to determine cholesterol concentration. The concept of laser beam propagation is guided by an optical fiber bundle in...
Exploring Pre-service Science Teachers' Capabilities in Competing for National Scientific Fair through SETS Learning
Aris Rudi Purnomo, Martini Martini, Laily Rosdiana, Wahyu Budi Sabtiawan, Hasan Subekti
To participate in the National Scientific Fair, pre-service science teachers (PSTs) need to prepare their capabilities in the competition. This study used survey to explore the capabilities of PSTs in terms of preparing scientific proposal, assessing proposal format and surveying PSTs perception. Rubric...
Soil Physic and Chemistry Characteristics on Pesticide Application of Soybean Land in Jombang, Lamongan and Probolinggo
Mahanani Tri Asri, Tarzan Purnomo, Yuliani Yuliani, Fida Rachmadiarti, Evie Ratnasari
Applications of pesticides on crop land have been used by soybean land farmer in Jombang, Lamongan and Probolinggo in order to control pest. Pesticide application of soybean land influence physic and chemistry soil, against growth of plant furthermore. This study aimed to identify soil physic and chemistry...
Sunu Kuntjoro, Fida Rachmadiarti
According to the Environment Project Agency (2007), about 25% of lead (Pb) remains in the engine and the other 75% will pollute the air as exhaust fumes. Kana (Cana sp) and Butterfly plant (Bahuinia purpurea) are plants that are suitable for the needs of urban forest plants. Studies related to the potential...
Ahmad Bashri, Rinie Pratiwi Puspitawati, Muslimin Ibrahim
This study aims to describe the effectiveness of curriculum implementation in the Biology Program, implementation of curriculum implementation in the Biology Program, and obstacles in implementing the curriculum. This research is an observational study, which observes curriculum documents and their implementation....
Fida Rachmadiarti, Herlina Fitrihidajati, Tarzan Purnomo, Yuliani Yuliani, Dwi Asih Wahyuningsih
Azolla microphylla and Pistia stratiotes were type of plants which used as alternative to remove pollutant from contaminated water. This study aimed to determine efficiency of Azolla microphylla and Pistia stratiotes as phytoremediator of Pb. These plants were grown in 14 days under hydroponic system...
Characterization of Microorganism Isolated From “Fermege”: The Ruminant Fermented Feed from Water Hyacinth (Eichhornia crassipes)
Isnawati Isnawati, Guntur Trimulyono
The aim of this study was to determine the number of bacteria and fungi in the fermentation process and characterization of these microorganisms. There were several steps in this research including production of fermented feed, isolation of indigenous microorganisms, purification, characterization of...
Improving the Quality of Goat Sperm through the Implementation of Fermented Feed based on Water Hyacinth: Fermege Formula 3
Evie Ratnasari, Herlina Fitrihidajati, Isnawati Isnawati
Fermented feed made from water hyacinth contain high nutrition, increase goat weight, improve carcass quality and improve the reproduction system of goats. The aims of this study were determining the effect of fermege formula 3 on the quality of goat spermatozoa was compared to conventional feed. This...
Improving the Quality of Tofu Liquid waste by the Sedimentation Process and the Phytoremediation of Water Hyacinth (Eichornia crassipes)
Herlina Fitrihidajati, Fida Rachmadiarti, Dwi Savitri Vidyawati
Waste from the tofu industry produced the pollutant like NH3, NO2, NO3 with high content that caused environmental pollution. Hence, the processing of tofu liquid waste was needed. The purpose of this research was to determine the effect on the levels of pH, NH3, NO2, NO3 and to determine the biomass...
Jariyah Jariyah, Sri Winarti, Inka Agrita
Snack bar is a snack in the form of bars made from cereals or nuts, has a high protein content which is usually consumed on the sidelines of meals. Pedada fruit is one of the mangrove fruits that contain high dietary fiber, while the legumes a good source of protein, and it also contains carbohydrates,...
Okik Hendriyanto Cahyonugroho, Kiki Indra Cahya, Agil Harnowo Putra
The slaughterhouse waste generally contains blood, protein, grease and suspended solids which cause the burden of high organic materials that can contaminate the rivers and environment. Therefore, efforts should be made before the waste with this high organic content in order not to pollute the environment....
Agil Harnowo Putra, Aulia Ulfah Farahdiba
The excess content of nutrients in the water can cause eutrophication which has an impact on increasing turbidity and causing anoxic conditions in a waters. High Rate Algae Reactor (HRAR) is wastewater treatment and nutrient recycling based on symbiotic interactions between heterotropic bacteria and...
Pangesti Nugrahani, Ida Retno Moeljani, Irda Lydiana
Chrysanthemum is one of the most important Indonesia flowers, that which has always been developed in various plant breeding studies, including the development of synthetic seed encapsulation methods. Encapsulation is a technology on enclosed any meristematic plant tissue in a protective and nutritive...
Physical and Chemical Properties of Silver Rasbora Bekasam Using Various Types of Processed Rice as Fermentation Media
Anugerah Dany Priyanto, Sri Djajati
The most frequent problem in increasing demand of fishery products is rapidly quality decline of fresh products. Therefore, obligatory right handling is required to maintain the fish quality. Aims of this study was to determine the type of processed rice as fermentation media in silver rasbora bekasam...
Enny Karti Basuki Susiloningsih, Rosida Rosida, Ariska Febrianita
The purpose of this study was to determine the effect of the proportion of wheat flour: purple yam flour and egg addition on the quality of dried noodles produced. This study used a completely randomized design factorial pattern with 2 factors, namely the proportion of wheat flour and purple yam flour...
Riski Ayu Anggreini, Ulya Sarofa, Rosida Rosida
Consumption of noodles in Indonesia is increasing and this has an impact on increasing imports of wheat flour. Sorghum is considered to have the potential to be used as a substitute for wheat flour, because it has a fairly good nutrient content. However, it has anti-nutritional properties which can reduce...
Diana Rahmawati, A. Fiqhi Ibadillah, Miftachul Ulum, Heri Setiawan
The aim of this study is designing a system which can automatically detects the harvest time of the plant, using data from camera, using image processing. Phase one of our project depends on designing a harvest time decision maker system using image processing. Phase 1, plant grown using Smart greenhouse...
Rosida Vivin Nahari, Novita Subagiarti, Achmad Jauhari, Riza Alfita, Kunto Aji Wibisono, Achmad Fiqhi Ibadillah, Mirza Pramudia
The development of technology, information and communication provides a new alternative to predict cow weight through Image Processing. This study utilizes Image Processing in visualizing the measurement of Chest Circumference and cow body length automatically. The cow weight estimation are very dependent...
Achmad Yasid, Budi Dwi Satoto
Despite proper soil health management, pests and diseases control is also an important task in corn farming for improving both the quality and the quality of the crops production. One way to address this challenge is to identify the emerging symptoms accurately to help define the appropriate solution....
Erina Rahmadyanti, Elizabeth Titiek Winanti, Indiah Kustini
Test results with SEM-EDX show that the deposition time affects the copper content of the MWCNT. With a deposition time of 15, 30 and 60 minutes, copper content was 1.141 %, 3.227 % and 33.56 % by weight. The XRD test results showed that with 15 minutes deposition time, there was 97 % MWCNT and 3 % copper...
Taxa composition of Insects in Peat Agricultural area Kalampangan sub-district Central Kalimantan Indonesia
Adventus Panda, Siti Aisiah, Kornelia Marlina Sosiayu, Rotua Novera Simbolon, Agus Haryono
Insects are one of taxa within Animal. Despite of their high adaptability, this group also cover vast areas. Nevertheless, they are played an ecological role. This is suggest, that this taxa having a sizable proportion over animal kingdom. Data from agricultural area, their existence most often reported...
Albumin, Globulin Concentration and Total Protein Colostrum Mother Pig Superovulation before Breeding
Revolson A Mege, Nonny Manampiring, Debbie J. J. Rayer, Friska M. Montolalu
This research aimed to study the effect of PMSG and hCG injection breeding albumin, globulin concentration and total protein colostrum mother of pig. This research using 6 months piggy descent of land care with 30 pigs total and the weight average 95-105 kg. Hormone in used are MPSG and hCG before breeding...
The Effect of Stirring Time and Cast Thickness on Morphology, Permeability, and Thermal Stability of Polysulfone/Polyvinylidene Fluoride Blended Membranes
Pirim Setiarso, Nita Kusumawati, Supari Muslim, Maria Monica Sianita, Ruwanti Dewi Cahya Ningrum
Polysulfone/Polyvinylidene fluoride blend (PSf/PVDF) membranes with composition PSf/PVDF/NMP/NH4Cl (wt.%) of 8/6/84/2 supported on gauze fabric were successfully synthesized by a phase inversion method and immersion precipitation technique. Variations of stirring time and cast thickness were used to...
Dina Kartika Maharani, Kusumawati Dwiningsih, Raisza Tarida Savana, Puma Manggala Virga Andika
The research with the title usage of zeolite and chitosan composites as slow release fertilizer had been done. In this research, fertilizer was made by mixing zeolite with NaNO3 as a source of macro nutrients (nitrogen) and chitosan as a crosslinks which will later be used to provide slow release function...
Antioxidant Activity of Palmitic Acid And Pinostrobin From Methanol Extract Of Syzygium litoralle (Myrtaceae)
Nurul Hidajati, Tukiran Tukiran, Dian Arista Setiabudi, Andika Pramudya Wardana
This study presents a research of klampok watu plant (Syzygium littorale) including the Myrtaceae family. As far, only a few report about Syzygium littorale in leaves, fruit, stem bark or other parts. The stem bark of plant was extracted with an organic solvent and then fractionated (isolated) using...
Bertha Yonata, Wasis Wasis, Raden Sulaiman, Elok Sudibyo, Muji Sri Prastiwi
This article reports the results of a limited trial on the academic competence of students in chemical education. This limited trial also measured the level of student confidence and the truth of chemical concepts from a sample of 24 class 2014 chemistry education students who would and were taking thesis...
Meta Yantidewi, Utama Alan Deta, Nurita Apridiana Lestari
Methane is one of the flammable natural gas that can be found in biogas. Because of its flammable property, methane is mostly used as fuel. This research designed a monitoring system that can monitor the methane concentration level. The instrument system consisted of a methane gas sensor as a gas detector,...
Wahyu Budi Sabtiawan, Elok Sudibyo, Tutut Nurita
Assessment is a part of educational process. One of the assessment roles is “assessment as learning” (AaL). The study aims to introduce a preliminary design for implementing AaL. The research, as developmental research, has been in a design step. The design was developed based on the genetic of AaL viewing...
Scientific Thinking Skills: Why Junior High School Science Teachers Cannot Use Discovery and Inquiry Models In Classroom
Erman Erman, Wasis Wasis, Endang Susantini, Utiya Azizah
This study aims to describe the difficulty of the teacher in distinguishing the implementation of discovery and inquiry learning models in science learning and the factors that led to the scientific thinking skills of junior high school science teachers. The case study design used in this study involved...
Analysis of Contaminant and Nutritional Content of Red Galangal (Alpinia purpurata K. Schaum) Simplicia
Mirwa Adiprahara Anggarani, Nita Kusumawati, Roy Januardi Irawan, Rusijono Rusijono
This study has been conducted analysis of contaminant and nutritional content of red galangal (Alpinia purpurata K. Schaum) simplicia. Simplicias as one of post-harvest processed form. Simplicia is a material to produce herbs medicine. So that, simplicia quality must be considered. The quality of simplicias...
Implementation of learning model map concept with inquiry strategy in an effort to train high-order thinking skills of chemistry education students
Ismono Ismono, Sri Poedjiastoeti, Suyatno Sutoyo
Higher order thinking skills (HOTs) are needed by the students of chemistry education, because they will become teachers who will be able to teach HOTs to the This research is the application of concept map learning models with inquiry strategies to train higher order thinking skills of chemical education...
The Implementation of Interactive Multimedia and Kits on Food Topic to Facilitate Chemical Students with Hearing Impairment
Dian Novita, Sri Poedjiastoeti, Sukarmin Sukarmin, Achmad Lutfi
The research aimed to describe the implementation of interactive multimedia and kits to facilitate students with hearing impairment. The kit consists of student activity sheet, tools, and materials for experiment. Student activity sheet of chemistry on foods consists of five experimental titles. The...
Suyono Suyono, Wahyu Budi Sabtiawan, Wike Kusuma Wardani
misconceptions have been the problem in educational field until now days. Tracing them will be an important part to solve the problems. The study aims to trace the individual conception using module assistance. The method was implementing a module of M3CGK containing conceptual change strategic to 16...
Raden Kokoh Haryo Putro, Vansa Nopy Rahardi, Okik Hendriyanto Cahyonugroho, Aussie Amalia
Pollution caused by Cr(VI) metal is harmful because it is toxic and carcinogenic. Utilization of cow bone waste is considered not optimal. One of the utilization is as an adsorbent of Cr(VI) metal. This research aims to determine the adsorption capacity by bone waste bone adsorbent in lowered Cr(VI)...
Aussie Amalia, Pritho Ajeng Maharani, Euis Nurul Hidayah, Raden Kokoh Haryo Putro
The excess content of phosphate in laundry wastewater can cause eutrophication. Ion exchange is a method that has been widely used to remove pollutants in wastewater. The study of ion exchange equilibrium is generally carried out by means of adsorption isotherms modelling. The use of adsorption isotherms...
Srie Muljani, Bambang Wahyudi
The effect of both citric acid and hydrochloric acid on the Si-K-HAs gel characterization was studied with various pH gelation. The Si-K-HAs gel obtained from acidification of the mixture of potassium silicate and potassium-humic substance solution by polymerization process. The humic substance was obtained...
Polyphenon Extraction Process From In vitro Culture of Camellia Sinensis L Callus With Ethyl Alcohol
Sutini Sutini, Widiwurjani Widiwurjani, Djoko Agus Purwanto, Wirdhatul Muslihatin
The purpose of this study was to obtain a polyphenon profile from callus extract obtained from in vitro culture of Camellia sinensis L. Polyphenon is one of the bioactive compounds found in Camellia sinensis L plants which can also be produced through in vitro culture. Polyphenon as a bioactive is often...
Study of Humic Acid and Multiantagonis of Streptomyces Sp, Trichoderma Sp Application Techniques for Horticulture Plant on Marginal Soil
Penta Suryaminarsih, Wiwik Sri Harijani, Wanti Mindari, Widi Wurjani
Tomato, red pepper and melon are high-value horticultural crops. Crop production will be decrese couse of pathogenic microorganism and Pest .Some soil saprophytic microorganisms are natural enemies of soil-borne pathogenic microorganisms and pests. Streptomyces sp., Trichoderma sp. is a biological agent,decomposer,...
Modeling and Optimization of Struvite Crystal Scaling Using Experimental Design Methodology For Maleic Acid
D. S. Perwitasari, A.P. Bayuseno, J. Jamari, S. Muryanto
This paper presents results of an investigation of scaling of magnesium ammonium phosphate hexahydrate (struvite) on a process batch crystallizer. In this study, variables, namely temperature (30-40oC), stirring speed (200-400 rpm), maleic acid concentration (1-20 ppm) were optimized using RSM (response...
Srie Muljani, Ely Kurniati
This research was carried out to produce precipitated silica from sodium silicate using acidic salt as precipitator. The aim of this research is to study the effects of acidic acid on precipitated silica characterization. The sodium silicate solution was produced by extraction of geothermal sludge using...
Caecilia Pujiastuti, Ketut Sumada, Yustina Ngatilah
Salt product of Indonesian country is produced through the process of evaporation and crystallization of seawater. The salt product contains sodium chloride (NaCl) levels ranging between 80-92% and the other are impurities such as magnesium chloride (MgCl2), calcium carbonate (CaCO3), potassium chloride...
Characterization of Humat Compounds Spectroscopy Under Different Soil Management Systems on Mount Bromo West Slope
Purnomo Edi Sasongko, Wanti Mindari, Purwanto Purwanto, Widyatmani Sih Dewi, Ramdan Hidayat
Soil organic matter (OM) is very important in its function, but information about the chemical composition, chemical structure and the changes caused by anthropogenic factors in the processing system is still in the research. The research objective is to examine the characteristics of organic materials...
Automatic Liquefied Petroleum Gas Leakage Control System Using Proportional Integral Derivative (PID) Proportional
Haryanto Haryanto, Achmad Fiqhi Ibadillah, Umar Faruq, Lilik Anifah
Along with the development of technology and information, human needs toward kerosene stove in household sector change over to Liquefied Petroleum Gas (LPG) stove, which is cheaper and more effective. However, the use of LPG stove should consider precised procedures as the gas is easy to explode. One...
Abraham Laurens Rettob, Nuryono Nuryono, Yenni Pintauli Pasaribu, Yorinda Buyang, Richard Samuel Waremwa
Adsorption of [AuCl4]- using aminobenzimidazole modified silica coated on iron sand magnetic material (MMSA) was carried out. MMSA was synthesized via sol gel process. MMSA was characterized by Fourier Transform Infrared (FT-IR) spectrophotometer and X-ray diffractometer. The ability of MMSA to adsorb...
The Effect of Citric Acid (C6H8O7) and Flow Rate to the Growth and Transformation of Crystal Phase of CaCO3
Christian Wely Wullur, Peter Sahupala
Scale formation, especially of calcium carbonate (CaCO3) is a serious problem faced by many industrial processes, such as chemical, desalination and oil industries. This paper discusses crystallization scaling of CaCO3 in pipes. The crystallizing solution was made by mixing equimolar solution of CaCl2...
Yenni Pintauli Pasaribu, Yorinda Buyang, Abraham Laurens Rettob, Reinyelda Latuheru, Inggrid Marlissa
Ant plant Myrmecodia rumphii Becc. is an epiphytic plant that is widely used by local people as an herbal medicine to treat various diseases such as rheumatic and tumors. Methanol extract of M. rumphii Becc. showed high cytotoxicity against shrimp larvae Arthemia salina Leach and antioxidant potential...
Yorinda Buyang, Yenni Pintauli Pasaribu, Ivylentine Datu Pallitin, Ni Luh Sri Suryaningsih, Taslim Ersam, Yatim Lailun Ni’mah
Sarang semut (Myrmecodia rhumpii Becc.) plants from Merauke Regency generally live on bus wood (Eucalyptus sp.). The results of previous studies found that sarang semut plants from Merauke have the potential as antioxidants in warding off free radicals of 92.6601%. The high antioxidant content encourages...
Liquid Chromatograph – Mass Spectrophotometer and Anti Uric Acid Potential Studies of Ethyl Acetat Extract of Archidendron bubalinum (Jack) I.C. Nielsen Fruit Seed Shell
Erna Styani, Candra Irawan, Hanafi Hanafi, Lilis Sulistiawaty, Imalia Imalia
This study focused on identifying the types of compounds contained in the ethyl acetate extract of seed shell of Archidendron bubalinum (Jack) I.C. Nielsen (AbJICN ) from Lampung Indonesia using Liquid Chromatograph Mass Spectrophotometer (LC-MS) and determining the potential of anti-uric acid in the...
The Influence and The Analysis Of Alkyl Ketene Dimers (AKD) to Paper Resistance in Water Absorption and Chemical Solution Penetration
Henny Rochaeni, Candra Irawan, Mira Nurfitri, Poppy Sri Lestari, Unang Rosdianan
The sheet paper has been made with variations of addition of Alkyl Ketene Dimers (AKD) of 0, 10, 12, and 14 kg/T. The result was a paper with gramatures of ± 70 g/m2. The analysis of the paper sheet to its durability in absorbing water and penetrating the chemical solution of the mixture of NH4SCN2 2%...
Stefanus Muryanto, S. Sutanti, E. Supriyo, W.A. Putranto
Calcium carbonate (CaCO3) crystals are in much demand as low-priced fillers and brightening agents. For example, the pulp and paper industries use CaCO3 as fillers to enhance opacity, brightness, smoothness and printability. Such enhancement is regulated by the crystal properties: morphology, crystalline...
Identification and Mitigation of Waste Construction Project Material (Case Study of Building Projects in Badung Regency)
I G A I Mas Pertiwi, W Sri Kristinayanti, K Wiwin Andayani, AA Putri Indrayanti
Construction projects contribute to the damage to nature, among others, from material extraction, material processing, material distribution, construction processes, land acquisition for buildings and energy consumption in building operations. Besides that, construction activities also produce high enough...
Evaluation And Maintenance of Road Damage In Sidotopo Surabaya Road Using Pavement Condition Index (PCI) Method
Ibnu Sholichin, Nugroho Utomo
Road damage is caused by overloaded and repeated traffic loads, heat or air temperature, water and rain, as well as poor asphalt quality, so the road must be maintained properly in order to serve traffic growth during the life of the plan. Routine and periodic road maintenance needs to be carried out...
Dian Purnamawati Solin, Hendrata Wibisana, Siti Zainab
Porosity soil is well known as soil properties and an indicator of the quality of soil. Applying porosity test in coastland area of Sampang District is highly needed, considering that the livelihoods of the people in Sampang are mostly farmers and also the development of village has recently grown rapidly....
Endang Yektiningsih, Sigit Dwi Nugroho, Eko Nurhadi, Sugiarto Sugiarto
This research aims to identify the working time allocation of vegetable farm households and arrange a labor planning model specially at vegetable farming households. This research was held in Tutur Sub-District, Pasuruan Regency with a total sample of vegetable farming households as many as 60 persons....
The Mathematical Model of Salinity Concentration In The Coastal Area of Sampang Distric Using Remote Sensing Data
Siti Zainab, Dian Purnamawati Solin, Hendrata Wibisana
Salinity is one of the parameters needed by farm workers and farmers to determine groundwater quality. High salinity values
The Analysis of Retaining Wall Strengthening on Small Reservoir at Pilangbango Madiun as an Alternative of Existing Design
Wahyu Kartini, Sumaidi Sumaidi, Faishal Zhafiry
In 2016 the government of Madiun city carried out the construction of the reservoir in Pilangbango village, Kartoharjo sub-district, Madiun, East Java. The reservoir construction work has been carried out according to the schedule, however, several wall collapse and land subsidence have arisen. To date,...
Minarni N. Trilita, Iwan Wahjudijanto, Lantanu Baggas Marsono, Novie Handajani
Flooding is a problem experienced in area. In the Sadar river watershed are urban areas and mountainous areas. Sadar river has many tributaries. The flow characteristics have a large flow velocity. Sadar river passes through urban areas and empties into the Brantas river. Floods often occur in the Mojokerto...
Iwan Santosa, Firman Kurniawan, Eza Rahmanita, Aeri Rachmad
An inventory control system is a system to determine stock inventory at a certain time. This happens because there are several problems, namely the difficulty in finding out information on requests, receipts, usage, and stock of consumables. This happens because the data is not stored in a good file...
Match Between Students' Anthropometry and Furniture Dimensions in the Library Reading Area at University of Trunojoyo Madura
Mahrus K. Umami, Halimatus Zahroh, Imron Kuswandi, Teguh Prasetyo, Mirza Pramudia
The compatibility between the dimensions of furniture and users’ body is crucial in keeping the users’ performance. The objective of this study is to identify whether the furniture dimensions in the library reading area at University of Trunojoyo Madura (UTM) are appropriate/inappropriate to the students’...
Arbain Tata, Anthonius Frederik Raffel, Muhammad Ihsan, Rudy Djamaluddin
Bridges or docks on coasts often fail due to fatigue loads. Sea waves striking bridge or the dock give a fatigue effect to the structure thus accelerating structural failure. This study aims to analyse glass fibre reinforced polymer (GFRP) reinforcement on reinforced concrete beams under fatigue and...
Sabaruddin, Muhammad Jamil
Multi layers in civil engineering has diverse meanings and uses for example on pavement has been used as a medium that provides theoretical information about the response of the pavement layer when receiving load in the middle, side and in the corner. In the other hand, multi-layers as a concept has...
Application of Pavement Condition Index (PCI) on The Assessment of The Kalumata – Fitu Highway Section of Southern of Ternate City
Sabaruddin, Rabial Awaludin
In general, roads are built as infrastructure to facilitate mobility and accessibility of socio-economic activities in society. The existence of the highway is very necessary to support the rate growth of the economy, agriculture and other sectors. Considers to the benefits that are very important, therefore,...
Endah Harisun, M. Amrin MS. Conoras
The exploitation of natural resources and the environment these days, which only prioritizes economic growth, has given degradation of other elements of The expected benefit of this research is to introduce the traditional North Maluku architecture as one of the solutions in the construction of environmental...
Fitro Darwis, Ilham Banggu, Mufti Amir Sultan
Cement replacement materials have been widely used to reduce adverse environmental impacts, increase the strength and durability of concrete, such as fume silica, slag, fly ash or natural pozzolan (volcanic ash). Volcanic ash is material that released from the earth when volcanic eruptions occur. Volcanic...
Flood Risk Assessment and Its Vulnerability in Coastal Villages, Central Halmahera District – North Maluku
Mohammad Ridwan Lessy, Nurhalis Wahiddin, Nani Nagu
Floods that occurred in Central Halmahera district had given a significant impact on environmental damage. This study aims to assess the risk level of flood and calculate vulnerability in study areas. The vulnerability will calculate based on social, economic and environmental aspects. Furthermore, the...
Mustamin Rahim, Ardi Basri, Hendra Fauzi
This study aims to identify the spatial characteristics of Bajo Tribe settlement around coastal areas in South Halmahera, environmental analysis and settlement conditions by literature review and field observation. The results show that the existence of Bajo Tribe in North Maluku deployment in coastal...
Nurwidyasari Usman, Muhammad Rizal, Edward Rizky Ahadian, Nani Nagu
Road growth must provide security and safety for road users. Article 23 of the Law of the Republic of Indonesia No.22 of 2009 states that the government as a road operator is obliged to provide a sense of security and safety for service users. The data analysis technique used in this project is qualitative...
Proposed Empirical Calculation to Predict Bearing Capacity of Embankment on Reinforced Wooden Stems as Mattress Overlying Soft Soil
Suyuti Suyuti, Mufti Amir Sultan, Zulkarnain K. Misbah
Indonesia is an archipelago country that there are about thirty percent lowlands covered by deposit soft soils or peat soil. Local government has been built road infrastructure, but the soft soil layer has problem for soil stiffness. Ministry of Public Works has published guideline for road construction...
Solid Waste Management: Mapping of Temporary Waste Sites and Potential Wild Solid Waste in Ternate City
Nani Nagu, Edward Rizky Ahadian
Garbage is a classical problem faced by all cities in Indonesia. The same problem also found in Ternate due to various aspects including population growth and rapid urbanization, inadequate number of facilities, lack of landfill management systems based on environmentally, and the implementation of reduce,...
Wati Asriningsih Pranoto, Tri Suyono
Indonesia is an archipelago with more than 17 thousand islands, both large and small islands. Some inhabited small islands do not have the potential of fresh water as a source of drinking water, so it needs special treatment in drinking water supply. Provision of drinking water with high technology such...
Abdul Gaus, Imran Imran
Concrete production in construction work is one of the causes of damage to the environment. the use of local materials as aggregates in concrete mixes is expected to be more eco green in construction. With the uniqueness of the pumice it is tried to serve as a fine aggregate for concrete mixing with...
Analysis of the Effects of Traffic Volume on the Pavement Condition in the Educational Zone of Merauke Regency
Dewi Sriastuti Nababan, Herbin Florensius Betaubun, Theresia Widi Asih Cahyanti, Budi Doloksaribu, Jeni Paresa
Among types of land use vital for the development of Merauke Regency is the land use intended to provide its population with education. Land use for educational purposes (the educational zone) in Merauke Regency, such as the one in Pendidikan Road, Kamizaun Road, and Ternate Road, constitutes important...
The Selection of Rain Distribution Analysis Method in (Bengawan Solo Watershed)Downstream Sub-Watershed
Dina Limbong Pamuttu, Umboro Lasminto, Daud Andang Pasalli, Yuli Helena Margaritha Rada, Abner Doloksaribu
Hydrological factor causes flood. Thus, it needs to be examined through rain frequency analysis by using continuous chance distribution. The location of this research is at the downstream sub-watershed of Bengawan Solo River. Average rainfall inflow area is calculated by Polygon Thiessen method with...
Sari Octavia, Henry Soleman Raubaba, Yashinta Irma Pratami Hematang, Anton Topan
Kancingan house is a house made of wood materials as its main structure but the walls are still made of bricks. The use of wood as the concrete-replacing materials is due to the relatively lower cost than the permanent structure made of concrete as the main structure since the concrete materials composed...
Suyadi Suyadi, Hairulla Hairulla, Philipus Betaubun, Agustan Agustan, Dina Pasalolo
Land is the place where a structure or construction is established, both construction of buildings and roads. What often causes problems is if the soil has bad properties such as high plasticity and a large potential for shrinkage. One way to improve the shrinkage properties is to stabilize the soil...
Mapping of Historical Building in Merauke uses a Geographic Information System (GIS) as a Form of Collaboration of Engineering Science
Yashinta Irma Pratami Hematang, Izak Habel Wayangkau
Despite being located on the border area, Merauke has a very important architectural historical heritage. However, if its current existence is not well-preserved, it will lead to extinction. In fact, the historic building provides an image or identity and increases the tourism value of a city. The Old...
Suryanegara Dwipa, I Gede Sastra Wibawa, I Nyoman Ramia, I Wayan Wiraga, I Wayan Arya
The purpose of this study was to find the relationship between density D and safety factor SF of the embankment against landslides. If the relation between D and SF is known, then we could simplify the slope stability calculation. The safety factor against landslides could be determined by only entering...
The Effect of Performance-Based Practical Assessment Model Towards Students' Competency Level at Civil Engineering Workshop in Kupang State Polytechnic
Wayan Sri Kristinayanti, Wira Ditta Lokantara, I Made Anom Santiana, N K Suciani
A formal education pathway should include a comprehensive assessment that oversees students’ competence not only in terms of cognitive aspect, but also the students’ psychomotor. Performance-based assessment was developed in this paper and aimed to improve student’s all-round performance in their studies...
Analysis of the Selection of Alternative Work Methods for Structural Work Using the Zero-One Method at the Guest Room Building Development Project in Sanur, Bali
Ni Ketut Evi Kusumadewi, I Wayan Sudiasa, Made Sudiarsa
There were various alternative construction work methods that could be chosen as the most suitable in order to achieve the project’s final goal by using the resources efficiently with an optimum result (cost, quality, and time). The alternative work methods could be applied on various projects, such...
Lilik Sudiajeng, I Wayan Wiraga, Made Mudhina, I Gede Nyoman Suta Waisnawa
This article aims to describe the importance of ergonomics implementation for the sustainability of groundwater conservation programs. Ergonomics concept has been applied in research on groundwater conservation in Denpasar City, Bali, Indonesia (2013-2018), started from problem identification, data collection...
Basuki Rahmat, Fitri Afiadi, Endra Joelianto
Knowledge of earthquake predictions is very important, especially to recognize patterns of occurrence. This paper proposes an earthquake prediction system, in the form of b-value predictions as parameters that indicate the potential for earthquakes. The methods used are neuro-fuzzy with ANFIS structure...
Intan Yuniar Purbasari, Fetty Tri Anggraeny, Masti Fatchiyah Maharani
Automatic question answering system is an information retrieval system designed to return an answer to a specific question. It is a base system for a chatbot application. This research aims to identify responses in a question answering system using Vector Space Model (VSM). The system compared query...
Nur Cahyo Wibowo, Tri Lathif Mardi Suryanto, Asif Faroqi, Rizka Hadiwiyanti
Abstract-YouTube as the world's largest video content service provider that can be accessed by various groups of people provides facilities to share videos easily widely to its consumers. With the development of YouTube as a social network site (SNSs), this study aims to identify the motivations of consumers...
Fetty Tri Anggraeny, Intan Yuniar Purbasari, M. Syahrul Munir, Faisal Muttaqin, Eka Prakarsa Mandyarta, Fawwaz Ali Akbar
In the statistical data collection it is very possible that there are variables that do not respond or in other words empty, called missing value, that can cause problems in data analysis. In this research we will analyze some simple imputation technique to solve the missing value problem, are zero imputation,...
Yisti Vita Via, Chrystia Aji Putra, Ronggo Alit
Pattern classification is one of the relevant problems in Artificial Intelligence. Neural networks have been studied as one of the most successful methods for pattern classification. Classical perceptron can only solve linear classification problems. Morphological Neural Networks (MNN) is an alternative...
Sugiarto Sugiarto, Mohammad Idhom, Ronggo Alit, Akhmad Fauzi
Course scheduling in high schools is a complex and complicated activity to solve. Complexity can be seen from the distribution of course, teachers, time, and also classrooms in one teaching and learning activity. In the subject scheduling process there are several things that must be considered. First,...